diff --git a/llvm/include/llvm/IR/IntrinsicsX86.td b/llvm/include/llvm/IR/IntrinsicsX86.td
--- a/llvm/include/llvm/IR/IntrinsicsX86.td
+++ b/llvm/include/llvm/IR/IntrinsicsX86.td
@@ -70,6 +70,14 @@
                                      [ImmArg<ArgIndex<1>>]>;
   def int_x86_atomic_btr : Intrinsic<[llvm_anyint_ty], [llvm_ptr_ty, llvm_i8_ty],
                                      [ImmArg<ArgIndex<1>>]>;
+  def int_x86_atomic_bts_rm  : Intrinsic<[llvm_i8_ty], [llvm_ptr_ty, llvm_anyint_ty],
+                                         []>;
+  def int_x86_atomic_btc_rm  : Intrinsic<[llvm_i8_ty], [llvm_ptr_ty, llvm_anyint_ty],
+                                         []>;
+  def int_x86_atomic_btr_rm  : Intrinsic<[llvm_i8_ty], [llvm_ptr_ty, llvm_anyint_ty],
+                                         []>;
+
+
 }
 
 // Lock binary arith with CC.
diff --git a/llvm/lib/Target/X86/X86ISelLowering.h b/llvm/lib/Target/X86/X86ISelLowering.h
--- a/llvm/lib/Target/X86/X86ISelLowering.h
+++ b/llvm/lib/Target/X86/X86ISelLowering.h
@@ -799,6 +799,9 @@
     LBTS,
     LBTC,
     LBTR,
+    LBTS_RM,
+    LBTC_RM,
+    LBTR_RM,
 
     /// RAO arithmetic instructions.
     /// OUTCHAIN = AADD(INCHAIN, PTR, RHS)
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -5642,6 +5642,9 @@
       return true;
     case Intrinsic::x86_cmpccxadd32:
     case Intrinsic::x86_cmpccxadd64:
+    case Intrinsic::x86_atomic_bts_rm:
+    case Intrinsic::x86_atomic_btc_rm:
+    case Intrinsic::x86_atomic_btr_rm:
     case Intrinsic::x86_atomic_bts:
     case Intrinsic::x86_atomic_btc:
     case Intrinsic::x86_atomic_btr: {
@@ -5654,6 +5657,7 @@
                     MachineMemOperand::MOVolatile;
       return true;
     }
+
     case Intrinsic::x86_aadd32:
     case Intrinsic::x86_aadd64:
     case Intrinsic::x86_aand32:
@@ -28352,6 +28356,25 @@
       return DAG.getNode(ISD::MERGE_VALUES, dl, Op->getVTList(), SetCC,
                          Operation.getValue(1));
     }
+    case Intrinsic::x86_atomic_bts_rm:
+    case Intrinsic::x86_atomic_btc_rm:
+    case Intrinsic::x86_atomic_btr_rm: {
+      SDLoc DL(Op);
+      MVT VT = Op.getSimpleValueType();
+      SDValue Chain = Op.getOperand(0);
+      SDValue Op1 = Op.getOperand(2);
+      SDValue Op2 = Op.getOperand(3);
+      unsigned Opc = IntNo == Intrinsic::x86_atomic_bts_rm   ? X86ISD::LBTS_RM
+                     : IntNo == Intrinsic::x86_atomic_btc_rm ? X86ISD::LBTC_RM
+                                                             : X86ISD::LBTR_RM;
+      MachineMemOperand *MMO = cast<MemIntrinsicSDNode>(Op)->getMemOperand();
+      SDValue Res =
+          DAG.getMemIntrinsicNode(Opc, DL, DAG.getVTList(MVT::i32, MVT::Other),
+                                  {Chain, Op1, Op2}, VT, MMO);
+      Chain = Res.getValue(1);
+      Res = DAG.getZExtOrTrunc(getSETCC(X86::COND_B, Res, DL, DAG), DL, VT);
+      return DAG.getNode(ISD::MERGE_VALUES, DL, Op->getVTList(), Res, Chain);
+    }
     case Intrinsic::x86_atomic_bts:
     case Intrinsic::x86_atomic_btc:
     case Intrinsic::x86_atomic_btr: {
@@ -28363,6 +28386,7 @@
       unsigned Opc = IntNo == Intrinsic::x86_atomic_bts   ? X86ISD::LBTS
                      : IntNo == Intrinsic::x86_atomic_btc ? X86ISD::LBTC
                                                           : X86ISD::LBTR;
+
       SDValue Size = DAG.getConstant(VT.getScalarSizeInBits(), DL, MVT::i32);
       MachineMemOperand *MMO = cast<MemIntrinsicSDNode>(Op)->getMemOperand();
       SDValue Res =
@@ -31389,6 +31413,96 @@
                                  : AtomicExpansionKind::None;
 }
 
+enum BitTestKind : unsigned {
+  UndefBit,
+  ConstantBit,
+  NotConstantBit,
+  ShiftBit,
+  NotShiftBit
+};
+
+static std::pair<Value *, BitTestKind> FindSingleBitChange(Value *V) {
+  BitTestKind BTK = UndefBit;
+  auto *C = dyn_cast<ConstantInt>(V);
+  if (C) {
+    // Check if V is a power of 2 or or NOT power of 2.
+    if (isPowerOf2_64(C->getZExtValue())) {
+      BTK = ConstantBit;
+    } else if (isPowerOf2_64((~C->getValue()).getZExtValue())) {
+      BTK = NotConstantBit;
+    }
+    return {V, BTK};
+  }
+
+  // Check if V is some power of 2 pattern known to be non-zero
+  auto *I = dyn_cast<Instruction>(V);
+  if (I) {
+    bool Not = false;
+    // Check if we have a NOT
+    if (I->getOpcode() == Instruction::Sub ||
+        I->getOpcode() == Instruction::Xor) {
+
+      auto *OpC0 = dyn_cast<ConstantInt>(I->getOperand(0));
+      auto *OpC1 = dyn_cast<ConstantInt>(I->getOperand(1));
+      // Check if this is a NOT instruction: -1 - X or X/-1 ^ -1/X
+      if (!OpC0 && (!OpC1 || I->getOpcode() == Instruction::Sub))
+        return {nullptr, UndefBit};
+
+      auto *MaybeNeg1 = OpC0 ? OpC0 : OpC1;
+      if (!MaybeNeg1->isMinusOne())
+        return {nullptr, UndefBit};
+
+      auto *OpI0 = dyn_cast<Instruction>(I->getOperand(0));
+      auto *OpI1 = dyn_cast<Instruction>(I->getOperand(1));
+
+      assert(OpI0 != nullptr || OpI1 != nullptr);
+      assert(OpI0 == nullptr || OpI1 == nullptr);
+
+      I = OpI0 ? OpI0 : OpI1;
+      Not = true;
+    }
+    // We can only use 1 << X without more sophisticated analysis. C << X where
+    // C is a power of 2 but not 1 can result in zero which cannot be translated
+    // to bittest. Likewise any C >> X (either arith or logical) can be zero.
+    if (I->getOpcode() == Instruction::Shl) {
+      // Todo(1): The cmpxchg case is pretty costly so matching `BLSI(X)`, `X &
+      // -X` and some other provable power of 2 patterns that we can use CTZ on
+      // may be profitable.
+      // Todo(2): It may be possible in some cases to prove that Shl(C, X) is
+      // non-zero even where C != 1. Likewise LShr(C, X) and AShr(C, X) may also
+      // be provably a non-zero power of 2.
+      // Todo(3): ROTL and ROTR patterns on a power of 2 C should also be
+      // transformable to bittest.
+      auto *ShiftVal = dyn_cast<ConstantInt>(I->getOperand(0));
+      if (!ShiftVal)
+        return {nullptr, UndefBit};
+      if (ShiftVal->equalsInt(1))
+        BTK = Not ? NotShiftBit : ShiftBit;
+
+      if (BTK == UndefBit)
+        return {nullptr, UndefBit};
+
+      Value *BitV = I->getOperand(1);
+      if (auto *I1 = dyn_cast<Instruction>(BitV)) {
+        // Read past a shiftmask instruction to find count
+        if (I1->getOpcode() == Instruction::And) {
+          auto *OpC0 = dyn_cast<ConstantInt>(I1->getOperand(0));
+          auto *OpC1 = dyn_cast<ConstantInt>(I1->getOperand(1));
+          if (OpC0 || OpC1) {
+            assert(OpC0 == nullptr || OpC1 == nullptr);
+            auto *C1 = OpC0 ? OpC0 : OpC1;
+            if (C1->equalsInt(I->getType()->getPrimitiveSizeInBits() - 1))
+              BitV = OpC0 ? I1->getOperand(1) : I1->getOperand(0);
+          }
+        }
+      }
+
+      return {BitV, BTK};
+    }
+  }
+  return {nullptr, UndefBit};
+}
+
 TargetLowering::AtomicExpansionKind
 X86TargetLowering::shouldExpandLogicAtomicRMWInIR(AtomicRMWInst *AI) const {
   // If the atomicrmw's result isn't actually used, we can just add a "lock"
@@ -31398,51 +31512,138 @@
 
   // If the atomicrmw's result is used by a single bit AND, we may use
   // bts/btr/btc instruction for these operations.
-  auto *C1 = dyn_cast<ConstantInt>(AI->getValOperand());
+  // Note: InstCombinePass can cause a de-optimization here. It replaces the
+  // SETCC(And(AtomicRMW(P, power_of_2), power_of_2)) with LShr and Xor
+  // (depending on CC). This pattern can only use bts/btr/btc but we don't
+  // detect it.
   Instruction *I = AI->user_back();
-  if (!C1 || !AI->hasOneUse() || I->getOpcode() != Instruction::And ||
+  auto BitChange = FindSingleBitChange(AI->getValOperand());
+  if (!BitChange.first || BitChange.second == UndefBit || !AI->hasOneUse() ||
+      I->getOpcode() != Instruction::And ||
+      AI->getType()->getPrimitiveSizeInBits() == 8 ||
       AI->getParent() != I->getParent())
     return AtomicExpansionKind::CmpXChg;
+
+  assert(I->getOperand(0) == AI);
   // The following instruction must be a AND single bit.
-  auto *C2 = dyn_cast<ConstantInt>(I->getOperand(1));
-  unsigned Bits = AI->getType()->getPrimitiveSizeInBits();
-  if (!C2 || Bits == 8 || !isPowerOf2_64(C2->getZExtValue()))
+  if (BitChange.second == ConstantBit || BitChange.second == NotConstantBit) {
+    auto *C1 = dyn_cast<ConstantInt>(AI->getValOperand());
+    assert(C1 != nullptr);
+    auto *C2 = dyn_cast<ConstantInt>(I->getOperand(1));
+    if (!C2 || !isPowerOf2_64(C2->getZExtValue())) {
+      return AtomicExpansionKind::CmpXChg;
+    }
+    if (AI->getOperation() == AtomicRMWInst::And) {
+      return ~C1->getValue() == C2->getValue()
+                 ? AtomicExpansionKind::BitTestIntrinsic
+                 : AtomicExpansionKind::CmpXChg;
+    }
+    return C1 == C2 ? AtomicExpansionKind::BitTestIntrinsic
+                    : AtomicExpansionKind::CmpXChg;
+  }
+
+  assert(BitChange.second == ShiftBit || BitChange.second == NotShiftBit);
+
+  auto BitTested = FindSingleBitChange(I->getOperand(1));
+  if (BitTested.second != ShiftBit && BitTested.second != NotShiftBit)
+    return AtomicExpansionKind::CmpXChg;
+
+  assert(BitTested.first != nullptr);
+
+  // If shift amounts are not the same we can't use BitTestIntrinsic
+  if (BitChange.first != BitTested.first)
     return AtomicExpansionKind::CmpXChg;
 
+  // If atomic AND need to be masking all be one bit and testing the one bit
+  // unset in the mask
   if (AI->getOperation() == AtomicRMWInst::And)
-    return ~C1->getValue() == C2->getValue()
+    return (BitChange.second == NotShiftBit && BitTested.second == ShiftBit)
                ? AtomicExpansionKind::BitTestIntrinsic
                : AtomicExpansionKind::CmpXChg;
 
-  return C1 == C2 ? AtomicExpansionKind::BitTestIntrinsic
-                  : AtomicExpansionKind::CmpXChg;
+  // If atomic XOR/OR need to be setting and testing the same bit.
+  return (BitChange.second == ShiftBit && BitTested.second == ShiftBit)
+             ? AtomicExpansionKind::BitTestIntrinsic
+             : AtomicExpansionKind::CmpXChg;
 }
 
 void X86TargetLowering::emitBitTestAtomicRMWIntrinsic(AtomicRMWInst *AI) const {
   IRBuilder<> Builder(AI);
-  Intrinsic::ID IID = Intrinsic::not_intrinsic;
+  Intrinsic::ID IID_C = Intrinsic::not_intrinsic;
+  Intrinsic::ID IID_I = Intrinsic::not_intrinsic;
   switch (AI->getOperation()) {
   default:
     llvm_unreachable("Unknown atomic operation");
   case AtomicRMWInst::Or:
-    IID = Intrinsic::x86_atomic_bts;
+    IID_C = Intrinsic::x86_atomic_bts;
+    IID_I = Intrinsic::x86_atomic_bts_rm;
     break;
   case AtomicRMWInst::Xor:
-    IID = Intrinsic::x86_atomic_btc;
+    IID_C = Intrinsic::x86_atomic_btc;
+    IID_I = Intrinsic::x86_atomic_btc_rm;
     break;
   case AtomicRMWInst::And:
-    IID = Intrinsic::x86_atomic_btr;
+    IID_C = Intrinsic::x86_atomic_btr;
+    IID_I = Intrinsic::x86_atomic_btr_rm;
     break;
   }
   Instruction *I = AI->user_back();
   LLVMContext &Ctx = AI->getContext();
-  unsigned Imm =
-      countTrailingZeros(cast<ConstantInt>(I->getOperand(1))->getZExtValue());
-  Function *BitTest =
-      Intrinsic::getDeclaration(AI->getModule(), IID, AI->getType());
   Value *Addr = Builder.CreatePointerCast(AI->getPointerOperand(),
                                           Type::getInt8PtrTy(Ctx));
-  Value *Result = Builder.CreateCall(BitTest, {Addr, Builder.getInt8(Imm)});
+  Function *BitTest = nullptr;
+  Value *Result = nullptr;
+  auto BitTested = FindSingleBitChange(AI->getValOperand());
+  assert(BitTested.first != nullptr);
+  if (BitTested.second == ConstantBit || BitTested.second == NotConstantBit) {
+    auto *C = dyn_cast<ConstantInt>(I->getOperand(1));
+    assert(C != nullptr);
+
+    BitTest = Intrinsic::getDeclaration(AI->getModule(), IID_C, AI->getType());
+
+    unsigned Imm = countTrailingZeros(C->getZExtValue());
+    Result = Builder.CreateCall(BitTest, {Addr, Builder.getInt8(Imm)});
+  } else {
+    BitTest = Intrinsic::getDeclaration(AI->getModule(), IID_I, AI->getType());
+
+    assert(BitTested.second == ShiftBit || BitTested.second == NotShiftBit);
+
+    Value *SI = BitTested.first;
+    assert(SI != nullptr);
+
+    // BT{S|R|C} on memory operand don't modulo bit position so we need to
+    // mask it.
+    unsigned ShiftBits = SI->getType()->getPrimitiveSizeInBits();
+    Value *BitPos =
+        Builder.CreateAnd(SI, Builder.getIntN(ShiftBits, ShiftBits - 1));
+    // Todo(1): In many cases it may be provable that SI is less than
+    // ShiftBits in which case this mask is unnecessary
+    // Todo(2): In the fairly idiomatic case of P[X / sizeof_bits(X)] OP 1
+    // << (X % sizeof_bits(X)) we can drop the shift mask and AGEN in
+    // favor of just a raw BT{S|R|C}.
+
+    Result = Builder.CreateCall(BitTest, {Addr, BitPos});
+    Result = Builder.CreateZExtOrTrunc(Result, AI->getType());
+
+    // If the result is only used for zero/non-zero status then we don't need to
+    // shift value back. Otherwise do so.
+    for (auto It = I->user_begin(); It != I->user_end(); ++It) {
+      if (auto *ICmp = dyn_cast<ICmpInst>(*It)) {
+        if (ICmp->isEquality()) {
+          auto *C0 = dyn_cast<ConstantInt>(ICmp->getOperand(0));
+          auto *C1 = dyn_cast<ConstantInt>(ICmp->getOperand(1));
+          if (C0 || C1) {
+            assert(C0 == nullptr || C1 == nullptr);
+            if ((C0 ? C0 : C1)->isZero())
+              continue;
+          }
+        }
+      }
+      Result = Builder.CreateShl(Result, BitPos);
+      break;
+    }
+  }
+
   I->replaceAllUsesWith(Result);
   I->eraseFromParent();
   AI->eraseFromParent();
@@ -34215,6 +34416,9 @@
   NODE_NAME_CASE(LBTS)
   NODE_NAME_CASE(LBTC)
   NODE_NAME_CASE(LBTR)
+  NODE_NAME_CASE(LBTS_RM)
+  NODE_NAME_CASE(LBTC_RM)
+  NODE_NAME_CASE(LBTR_RM)
   NODE_NAME_CASE(AADD)
   NODE_NAME_CASE(AOR)
   NODE_NAME_CASE(AXOR)
diff --git a/llvm/lib/Target/X86/X86InstrCompiler.td b/llvm/lib/Target/X86/X86InstrCompiler.td
--- a/llvm/lib/Target/X86/X86InstrCompiler.td
+++ b/llvm/lib/Target/X86/X86InstrCompiler.td
@@ -869,6 +869,17 @@
 def x86btr : SDNode<"X86ISD::LBTR", X86LBTest,
                     [SDNPHasChain, SDNPMayLoad, SDNPMayStore, SDNPMemOperand]>;
 
+def X86LBTestRM : SDTypeProfile<1, 2, [SDTCisVT<0, i32>, SDTCisPtrTy<1>,
+                                       SDTCisInt<2>]>;
+
+def x86_rm_bts : SDNode<"X86ISD::LBTS_RM", X86LBTestRM,
+                        [SDNPHasChain, SDNPMayLoad, SDNPMayStore, SDNPMemOperand]>;
+def x86_rm_btc : SDNode<"X86ISD::LBTC_RM", X86LBTestRM,
+                        [SDNPHasChain, SDNPMayLoad, SDNPMayStore, SDNPMemOperand]>;
+def x86_rm_btr : SDNode<"X86ISD::LBTR_RM", X86LBTestRM,
+                        [SDNPHasChain, SDNPMayLoad, SDNPMayStore, SDNPMemOperand]>;
+
+
 multiclass ATOMIC_LOGIC_OP<Format Form, string s> {
   let Defs = [EFLAGS], mayLoad = 1, mayStore = 1, isCodeGenOnly = 1,
       SchedRW = [WriteBitTestSetRegRMW]  in {
@@ -887,10 +898,33 @@
   }
 }
 
+multiclass ATOMIC_LOGIC_OP_RM<bits<8> Opc8, string s> {
+  let Defs = [EFLAGS], mayLoad = 1, mayStore = 1, isCodeGenOnly = 1,
+      SchedRW = [WriteBitTestSetRegRMW]  in {
+    def 16rm : Ii8<Opc8, MRMDestMem, (outs), (ins i16mem:$src1, GR16:$src2),
+                  !strconcat(s, "{w}\t{$src2, $src1|$src1, $src2}"),
+                  [(set EFLAGS, (!cast<SDNode>("x86_rm_" # s) addr:$src1, GR16:$src2))]>,
+               OpSize16, TB, LOCK;
+    def 32rm : Ii8<Opc8, MRMDestMem, (outs), (ins i32mem:$src1, GR32:$src2),
+                  !strconcat(s, "{l}\t{$src2, $src1|$src1, $src2}"),
+                  [(set EFLAGS, (!cast<SDNode>("x86_rm_" # s) addr:$src1, GR32:$src2))]>,
+               OpSize32, TB, LOCK;
+    def 64rm : RIi8<Opc8, MRMDestMem, (outs), (ins i64mem:$src1, GR64:$src2),
+                   !strconcat(s, "{q}\t{$src2, $src1|$src1, $src2}"),
+                   [(set EFLAGS, (!cast<SDNode>("x86_rm_" # s) addr:$src1, GR64:$src2))]>,
+               TB, LOCK;
+  }
+}
+
+
 defm LOCK_BTS : ATOMIC_LOGIC_OP<MRM5m, "bts">;
 defm LOCK_BTC : ATOMIC_LOGIC_OP<MRM7m, "btc">;
 defm LOCK_BTR : ATOMIC_LOGIC_OP<MRM6m, "btr">;
 
+defm LOCK_BTS_RM : ATOMIC_LOGIC_OP_RM<0xAB, "bts">;
+defm LOCK_BTC_RM : ATOMIC_LOGIC_OP_RM<0xBB, "btc">;
+defm LOCK_BTR_RM : ATOMIC_LOGIC_OP_RM<0xB3, "btr">;
+
 // Atomic compare and swap.
 multiclass LCMPXCHG_BinOp<bits<8> Opc8, bits<8> Opc, Format Form,
                           string mnemonic, SDPatternOperator frag> {
diff --git a/llvm/test/CodeGen/X86/atomic-rm-bit-test.ll b/llvm/test/CodeGen/X86/atomic-rm-bit-test.ll
new file mode 100644
--- /dev/null
+++ b/llvm/test/CodeGen/X86/atomic-rm-bit-test.ll
@@ -0,0 +1,56865 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=i686-unknown-linux-gnu -mattr=-bmi,-bmi2 < %s | FileCheck %s --check-prefixes=X86-NOBMI2
+; RUN: llc -mtriple=i686-unknown-linux-gnu -mattr=+bmi,-bmi2 < %s | FileCheck %s --check-prefixes=X86-NOBMI2
+; RUN: llc -mtriple=i686-unknown-linux-gnu -mattr=+bmi,-bmi2 < %s | FileCheck %s --check-prefixes=X86-NOBMI2
+; RUN: llc -mtriple=i686-unknown-linux-gnu -mattr=+bmi,+bmi2 < %s | FileCheck %s --check-prefixes=X86-BMI2
+; RUN: llc -mtriple=i686-unknown-linux-gnu -mattr=+bmi,+bmi2 < %s | FileCheck %s --check-prefixes=X86-BMI2
+; RUN: llc -mtriple=x86_64-unknown-linux-gnu -mattr=-bmi,-bmi2 < %s | FileCheck %s --check-prefixes=X64-NOBMI2
+; RUN: llc -mtriple=x86_64-unknown-linux-gnu -mattr=+bmi,-bmi2 < %s | FileCheck %s --check-prefixes=X64-NOBMI2
+; RUN: llc -mtriple=x86_64-unknown-linux-gnu -mattr=+bmi,-bmi2 < %s | FileCheck %s --check-prefixes=X64-NOBMI2
+; RUN: llc -mtriple=x86_64-unknown-linux-gnu -mattr=+bmi,+bmi2 < %s | FileCheck %s --check-prefixes=X64-BMI2
+; RUN: llc -mtriple=x86_64-unknown-linux-gnu -mattr=+bmi,+bmi2 < %s | FileCheck %s --check-prefixes=X64-BMI2
+
+define i16 @atomic_shl1_xor_16_gpr_val(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_xor_16_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl $1, %edx
+; X86-NOBMI2-NEXT:    shll %cl, %edx
+; X86-NOBMI2-NEXT:    movzwl (%esi), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB0_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    xorl %edx, %ecx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %cx, (%esi)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB0_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edx, %eax
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_xor_16_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    .cfi_offset %esi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl $1, %ecx
+; X86-BMI2-NEXT:    shlxl %eax, %ecx, %ecx
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB0_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %esi
+; X86-BMI2-NEXT:    xorl %ecx, %esi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %si, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB0_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ecx, %eax
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_xor_16_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB0_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    xorl %edx, %ecx
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB0_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    andl %edx, %eax
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_xor_16_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB0_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB0_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    andl %ecx, %eax
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %shl = shl nuw i32 1, %conv
+  %conv1 = trunc i32 %shl to i16
+  %0 = atomicrmw xor ptr %v, i16 %conv1 monotonic, align 2
+  %conv5 = and i16 %0, %conv1
+  ret i16 %conv5
+}
+
+define i16 @atomic_shl1_mask0_xor_16_gpr_val(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_xor_16_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andb $15, %cl
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    movzwl (%esi), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB1_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    xorl %edi, %ecx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %cx, (%esi)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB1_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    andl %esi, %eax
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_xor_16_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    andb $15, %al
+; X86-BMI2-NEXT:    movl $1, %esi
+; X86-BMI2-NEXT:    shlxl %eax, %esi, %esi
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB1_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    xorl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB1_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl $1, %edx
+; X86-BMI2-NEXT:    shlxl %ecx, %edx, %ecx
+; X86-BMI2-NEXT:    andl %ecx, %eax
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_xor_16_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andb $15, %cl
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB1_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    xorl %edx, %ecx
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB1_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    andl %edx, %eax
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_xor_16_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andb $15, %al
+; X64-BMI2-NEXT:    movl $1, %ecx
+; X64-BMI2-NEXT:    shlxl %eax, %ecx, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB1_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB1_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movl $1, %ecx
+; X64-BMI2-NEXT:    shlxl %esi, %ecx, %ecx
+; X64-BMI2-NEXT:    andl %ecx, %eax
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i16 %c, 15
+  %shl = shl nuw i16 1, %0
+  %1 = atomicrmw xor ptr %v, i16 %shl monotonic, align 2
+  %conv3 = zext i16 %c to i32
+  %shl4 = shl nuw i32 1, %conv3
+  %2 = trunc i32 %shl4 to i16
+  %conv5 = and i16 %1, %2
+  ret i16 %conv5
+}
+
+define i16 @atomic_shl1_mask1_xor_16_gpr_val(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_xor_16_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB2_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    xorl %esi, %edi
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB2_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andb $15, %cl
+; X86-NOBMI2-NEXT:    movl $1, %edx
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $cx
+; X86-NOBMI2-NEXT:    shll %cl, %edx
+; X86-NOBMI2-NEXT:    andl %edx, %eax
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_xor_16_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %esi
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB2_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    xorl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB2_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andb $15, %cl
+; X86-BMI2-NEXT:    movl $1, %edx
+; X86-BMI2-NEXT:    shlxl %ecx, %edx, %ecx
+; X86-BMI2-NEXT:    andl %ecx, %eax
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_xor_16_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB2_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    xorl %edx, %esi
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB2_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    andb $15, %cl
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    andl %edx, %eax
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_xor_16_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB2_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB2_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    andb $15, %sil
+; X64-BMI2-NEXT:    movl $1, %ecx
+; X64-BMI2-NEXT:    shlxl %esi, %ecx, %ecx
+; X64-BMI2-NEXT:    andl %ecx, %eax
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %shl = shl nuw i32 1, %conv
+  %conv1 = trunc i32 %shl to i16
+  %0 = atomicrmw xor ptr %v, i16 %conv1 monotonic, align 2
+  %1 = and i16 %c, 15
+  %shl4 = shl nuw i16 1, %1
+  %and = and i16 %0, %shl4
+  ret i16 %and
+}
+
+define i16 @atomic_shl1_mask01_xor_16_gpr_val(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_xor_16_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $15, %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    lock btcw %cx, (%edx)
+; X86-NOBMI2-NEXT:    setb %al
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    shll %cl, %eax
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_xor_16_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    andl $15, %ecx
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    lock btcw %cx, (%eax)
+; X86-BMI2-NEXT:    setb %dl
+; X86-BMI2-NEXT:    shlxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_xor_16_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andl $15, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btcw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %eax
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_xor_16_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $15, %esi
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btcw %si, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %eax
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i16 %c, 15
+  %shl = shl nuw i16 1, %0
+  %1 = atomicrmw xor ptr %v, i16 %shl monotonic, align 2
+  %conv7 = and i16 %1, %shl
+  ret i16 %conv7
+}
+
+define i16 @atomic_blsi_xor_16_gpr_val(ptr %v, i16 %c) {
+; X86-BMI2-LABEL: atomic_blsi_xor_16_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    .cfi_offset %esi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    blsil %eax, %ecx
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB4_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %esi
+; X86-BMI2-NEXT:    xorl %ecx, %esi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %si, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB4_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ecx, %eax
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_xor_16_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    blsil %esi, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB4_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB4_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    andl %ecx, %eax
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %sub = sub i16 0, %c
+  %and = and i16 %sub, %c
+  %0 = atomicrmw xor ptr %v, i16 %and monotonic, align 2
+  %conv9 = and i16 %0, %and
+  ret i16 %conv9
+}
+
+define i16 @atomic_shl1_xor_16_gpr_valz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_xor_16_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl $1, %edx
+; X86-NOBMI2-NEXT:    shll %cl, %edx
+; X86-NOBMI2-NEXT:    movzwl (%esi), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB5_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    xorl %edx, %ecx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %cx, (%esi)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB5_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    testl %ecx, %edx
+; X86-NOBMI2-NEXT:    sete %al
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_xor_16_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    .cfi_offset %esi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl $1, %edx
+; X86-BMI2-NEXT:    shlxl %eax, %edx, %edx
+; X86-BMI2-NEXT:    movzwl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB5_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %esi
+; X86-BMI2-NEXT:    xorl %edx, %esi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %si, (%ecx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB5_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %ecx
+; X86-BMI2-NEXT:    xorl %eax, %eax
+; X86-BMI2-NEXT:    testl %ecx, %edx
+; X86-BMI2-NEXT:    sete %al
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_xor_16_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB5_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    xorl %edx, %ecx
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB5_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    testl %ecx, %edx
+; X64-NOBMI2-NEXT:    sete %al
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_xor_16_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB5_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB5_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %edx
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    testl %edx, %ecx
+; X64-BMI2-NEXT:    sete %al
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %shl = shl nuw i32 1, %conv
+  %conv1 = trunc i32 %shl to i16
+  %0 = atomicrmw xor ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %0 to i32
+  %and = and i32 %shl, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  %conv5 = zext i1 %tobool.not to i16
+  ret i16 %conv5
+}
+
+define i16 @atomic_shl1_mask0_xor_16_gpr_valz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_xor_16_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andb $15, %cl
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    movzwl (%esi), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB6_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    xorl %edi, %ecx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %cx, (%esi)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB6_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    btl %edx, %ecx
+; X86-NOBMI2-NEXT:    setae %al
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_xor_16_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    andb $15, %al
+; X86-BMI2-NEXT:    movl $1, %esi
+; X86-BMI2-NEXT:    shlxl %eax, %esi, %esi
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB6_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    xorl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB6_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %edx
+; X86-BMI2-NEXT:    xorl %eax, %eax
+; X86-BMI2-NEXT:    btl %ecx, %edx
+; X86-BMI2-NEXT:    setae %al
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_xor_16_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andb $15, %cl
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB6_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    xorl %edx, %ecx
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB6_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    btl %esi, %ecx
+; X64-NOBMI2-NEXT:    setae %al
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_xor_16_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andb $15, %al
+; X64-BMI2-NEXT:    movl $1, %ecx
+; X64-BMI2-NEXT:    shlxl %eax, %ecx, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB6_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB6_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %ecx
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    btl %esi, %ecx
+; X64-BMI2-NEXT:    setae %al
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i16 %c, 15
+  %shl = shl nuw i16 1, %0
+  %1 = atomicrmw xor ptr %v, i16 %shl monotonic, align 2
+  %conv2 = zext i16 %1 to i32
+  %conv3 = zext i16 %c to i32
+  %shl4 = shl nuw i32 1, %conv3
+  %and = and i32 %shl4, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  %conv5 = zext i1 %tobool.not to i16
+  ret i16 %conv5
+}
+
+define i16 @atomic_shl1_mask1_xor_16_gpr_valz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_xor_16_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB7_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    xorl %esi, %edi
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB7_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %edx
+; X86-NOBMI2-NEXT:    andl $15, %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    btl %ecx, %edx
+; X86-NOBMI2-NEXT:    setae %al
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_xor_16_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %esi
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB7_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    xorl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB7_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %edx
+; X86-BMI2-NEXT:    andl $15, %ecx
+; X86-BMI2-NEXT:    xorl %eax, %eax
+; X86-BMI2-NEXT:    btl %ecx, %edx
+; X86-BMI2-NEXT:    setae %al
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_xor_16_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB7_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    xorl %edx, %esi
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB7_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %edx
+; X64-NOBMI2-NEXT:    andl $15, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    btl %ecx, %edx
+; X64-NOBMI2-NEXT:    setae %al
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_xor_16_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB7_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB7_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %ecx
+; X64-BMI2-NEXT:    andl $15, %esi
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    btl %esi, %ecx
+; X64-BMI2-NEXT:    setae %al
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %shl = shl nuw i32 1, %conv
+  %conv1 = trunc i32 %shl to i16
+  %0 = atomicrmw xor ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %0 to i32
+  %1 = and i16 %c, 15
+  %sh_prom = zext i16 %1 to i32
+  %shl4 = shl nuw nsw i32 1, %sh_prom
+  %and = and i32 %shl4, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  %conv5 = zext i1 %tobool.not to i16
+  ret i16 %conv5
+}
+
+define i16 @atomic_shl1_mask01_xor_16_gpr_valz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_xor_16_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andb $15, %cl
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB8_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    xorl %esi, %ecx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %cx, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB8_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    testl %ecx, %esi
+; X86-NOBMI2-NEXT:    sete %al
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_xor_16_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    .cfi_offset %esi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    andb $15, %al
+; X86-BMI2-NEXT:    movl $1, %edx
+; X86-BMI2-NEXT:    shlxl %eax, %edx, %edx
+; X86-BMI2-NEXT:    movzwl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB8_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %esi
+; X86-BMI2-NEXT:    xorl %edx, %esi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %si, (%ecx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB8_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %ecx
+; X86-BMI2-NEXT:    xorl %eax, %eax
+; X86-BMI2-NEXT:    testl %ecx, %edx
+; X86-BMI2-NEXT:    sete %al
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_xor_16_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andb $15, %cl
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB8_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    xorl %edx, %ecx
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB8_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    testl %ecx, %edx
+; X64-NOBMI2-NEXT:    sete %al
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_xor_16_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andb $15, %sil
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB8_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB8_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %edx
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    testl %edx, %ecx
+; X64-BMI2-NEXT:    sete %al
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i16 %c, 15
+  %sh_prom = zext i16 %0 to i32
+  %shl = shl nuw nsw i32 1, %sh_prom
+  %conv1 = trunc i32 %shl to i16
+  %1 = atomicrmw xor ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %1 to i32
+  %and = and i32 %shl, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  %conv7 = zext i1 %tobool.not to i16
+  ret i16 %conv7
+}
+
+define i16 @atomic_blsi_xor_16_gpr_valz(ptr %v, i16 %c) {
+; X86-BMI2-LABEL: atomic_blsi_xor_16_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    .cfi_offset %esi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    blsil %eax, %ecx
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB9_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %esi
+; X86-BMI2-NEXT:    xorl %ecx, %esi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %si, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB9_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %edx
+; X86-BMI2-NEXT:    xorl %eax, %eax
+; X86-BMI2-NEXT:    testl %edx, %ecx
+; X86-BMI2-NEXT:    sete %al
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_xor_16_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movzwl %si, %eax
+; X64-BMI2-NEXT:    blsil %eax, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB9_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB9_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %edx
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    testl %edx, %ecx
+; X64-BMI2-NEXT:    sete %al
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %sub = sub nsw i32 0, %conv
+  %and = and i32 %conv, %sub
+  %conv2 = trunc i32 %and to i16
+  %0 = atomicrmw xor ptr %v, i16 %conv2 monotonic, align 2
+  %conv3 = zext i16 %0 to i32
+  %and8 = and i32 %and, %conv3
+  %tobool.not = icmp eq i32 %and8, 0
+  %conv9 = zext i1 %tobool.not to i16
+  ret i16 %conv9
+}
+
+define i16 @atomic_shl1_xor_16_gpr_valnz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_xor_16_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl $1, %edx
+; X86-NOBMI2-NEXT:    shll %cl, %edx
+; X86-NOBMI2-NEXT:    movzwl (%esi), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB10_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    xorl %edx, %ecx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %cx, (%esi)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB10_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    testl %ecx, %edx
+; X86-NOBMI2-NEXT:    setne %al
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_xor_16_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    .cfi_offset %esi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl $1, %edx
+; X86-BMI2-NEXT:    shlxl %eax, %edx, %edx
+; X86-BMI2-NEXT:    movzwl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB10_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %esi
+; X86-BMI2-NEXT:    xorl %edx, %esi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %si, (%ecx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB10_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %ecx
+; X86-BMI2-NEXT:    xorl %eax, %eax
+; X86-BMI2-NEXT:    testl %ecx, %edx
+; X86-BMI2-NEXT:    setne %al
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_xor_16_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB10_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    xorl %edx, %ecx
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB10_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    testl %ecx, %edx
+; X64-NOBMI2-NEXT:    setne %al
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_xor_16_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB10_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB10_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %edx
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    testl %edx, %ecx
+; X64-BMI2-NEXT:    setne %al
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %shl = shl nuw i32 1, %conv
+  %conv1 = trunc i32 %shl to i16
+  %0 = atomicrmw xor ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %0 to i32
+  %and = and i32 %shl, %conv2
+  %tobool = icmp ne i32 %and, 0
+  %conv6 = zext i1 %tobool to i16
+  ret i16 %conv6
+}
+
+define i16 @atomic_shl1_mask0_xor_16_gpr_valnz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_xor_16_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andb $15, %cl
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    movzwl (%esi), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB11_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    xorl %edi, %ecx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %cx, (%esi)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB11_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    btl %edx, %ecx
+; X86-NOBMI2-NEXT:    setb %al
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_xor_16_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    andb $15, %al
+; X86-BMI2-NEXT:    movl $1, %esi
+; X86-BMI2-NEXT:    shlxl %eax, %esi, %esi
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB11_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    xorl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB11_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %edx
+; X86-BMI2-NEXT:    xorl %eax, %eax
+; X86-BMI2-NEXT:    btl %ecx, %edx
+; X86-BMI2-NEXT:    setb %al
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_xor_16_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andb $15, %cl
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB11_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    xorl %edx, %ecx
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB11_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    btl %esi, %ecx
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_xor_16_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andb $15, %al
+; X64-BMI2-NEXT:    movl $1, %ecx
+; X64-BMI2-NEXT:    shlxl %eax, %ecx, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB11_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB11_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %ecx
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    btl %esi, %ecx
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i16 %c, 15
+  %shl = shl nuw i16 1, %0
+  %1 = atomicrmw xor ptr %v, i16 %shl monotonic, align 2
+  %conv2 = zext i16 %1 to i32
+  %conv3 = zext i16 %c to i32
+  %shl4 = shl nuw i32 1, %conv3
+  %and = and i32 %shl4, %conv2
+  %tobool = icmp ne i32 %and, 0
+  %conv6 = zext i1 %tobool to i16
+  ret i16 %conv6
+}
+
+define i16 @atomic_shl1_mask1_xor_16_gpr_valnz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_xor_16_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB12_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    xorl %esi, %edi
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB12_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %edx
+; X86-NOBMI2-NEXT:    andl $15, %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    btl %ecx, %edx
+; X86-NOBMI2-NEXT:    setb %al
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_xor_16_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %esi
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB12_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    xorl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB12_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %edx
+; X86-BMI2-NEXT:    andl $15, %ecx
+; X86-BMI2-NEXT:    xorl %eax, %eax
+; X86-BMI2-NEXT:    btl %ecx, %edx
+; X86-BMI2-NEXT:    setb %al
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_xor_16_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB12_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    xorl %edx, %esi
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB12_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %edx
+; X64-NOBMI2-NEXT:    andl $15, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    btl %ecx, %edx
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_xor_16_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB12_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB12_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %ecx
+; X64-BMI2-NEXT:    andl $15, %esi
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    btl %esi, %ecx
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %shl = shl nuw i32 1, %conv
+  %conv1 = trunc i32 %shl to i16
+  %0 = atomicrmw xor ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %0 to i32
+  %1 = and i16 %c, 15
+  %sh_prom = zext i16 %1 to i32
+  %shl4 = shl nuw nsw i32 1, %sh_prom
+  %and = and i32 %shl4, %conv2
+  %tobool = icmp ne i32 %and, 0
+  %conv6 = zext i1 %tobool to i16
+  ret i16 %conv6
+}
+
+define i16 @atomic_shl1_mask01_xor_16_gpr_valnz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_xor_16_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andb $15, %cl
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB13_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    xorl %esi, %ecx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %cx, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB13_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    testl %ecx, %esi
+; X86-NOBMI2-NEXT:    setne %al
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_xor_16_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    .cfi_offset %esi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    andb $15, %al
+; X86-BMI2-NEXT:    movl $1, %edx
+; X86-BMI2-NEXT:    shlxl %eax, %edx, %edx
+; X86-BMI2-NEXT:    movzwl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB13_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %esi
+; X86-BMI2-NEXT:    xorl %edx, %esi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %si, (%ecx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB13_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %ecx
+; X86-BMI2-NEXT:    xorl %eax, %eax
+; X86-BMI2-NEXT:    testl %ecx, %edx
+; X86-BMI2-NEXT:    setne %al
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_xor_16_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andb $15, %cl
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB13_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    xorl %edx, %ecx
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB13_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    testl %ecx, %edx
+; X64-NOBMI2-NEXT:    setne %al
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_xor_16_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andb $15, %sil
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB13_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB13_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %edx
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    testl %edx, %ecx
+; X64-BMI2-NEXT:    setne %al
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i16 %c, 15
+  %sh_prom = zext i16 %0 to i32
+  %shl = shl nuw nsw i32 1, %sh_prom
+  %conv1 = trunc i32 %shl to i16
+  %1 = atomicrmw xor ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %1 to i32
+  %and = and i32 %shl, %conv2
+  %tobool = icmp ne i32 %and, 0
+  %conv8 = zext i1 %tobool to i16
+  ret i16 %conv8
+}
+
+define i16 @atomic_blsi_xor_16_gpr_valnz(ptr %v, i16 %c) {
+; X86-BMI2-LABEL: atomic_blsi_xor_16_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    .cfi_offset %esi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    blsil %eax, %ecx
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB14_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %esi
+; X86-BMI2-NEXT:    xorl %ecx, %esi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %si, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB14_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %edx
+; X86-BMI2-NEXT:    xorl %eax, %eax
+; X86-BMI2-NEXT:    testl %edx, %ecx
+; X86-BMI2-NEXT:    setne %al
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_xor_16_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movzwl %si, %eax
+; X64-BMI2-NEXT:    blsil %eax, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB14_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB14_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %edx
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    testl %edx, %ecx
+; X64-BMI2-NEXT:    setne %al
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %sub = sub nsw i32 0, %conv
+  %and = and i32 %conv, %sub
+  %conv2 = trunc i32 %and to i16
+  %0 = atomicrmw xor ptr %v, i16 %conv2 monotonic, align 2
+  %conv3 = zext i16 %0 to i32
+  %and8 = and i32 %and, %conv3
+  %tobool = icmp ne i32 %and8, 0
+  %conv10 = zext i1 %tobool to i16
+  ret i16 %conv10
+}
+
+define i16 @atomic_shl1_xor_16_gpr_br(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_xor_16_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB15_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    xorl %esi, %edi
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB15_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %eax
+; X86-NOBMI2-NEXT:    testl %eax, %esi
+; X86-NOBMI2-NEXT:    je .LBB15_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movzwl %cx, %eax
+; X86-NOBMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-NOBMI2-NEXT:    jmp .LBB15_5
+; X86-NOBMI2-NEXT:  .LBB15_3:
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:  .LBB15_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_xor_16_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %edx, %eax, %esi
+; X86-BMI2-NEXT:    movzwl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB15_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    xorl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%ecx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB15_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %eax
+; X86-BMI2-NEXT:    testl %eax, %esi
+; X86-BMI2-NEXT:    je .LBB15_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movzwl %dx, %eax
+; X86-BMI2-NEXT:    movzwl (%ecx,%eax,2), %eax
+; X86-BMI2-NEXT:    jmp .LBB15_5
+; X86-BMI2-NEXT:  .LBB15_3:
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:  .LBB15_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_xor_16_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB15_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    xorl %edx, %esi
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB15_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %eax
+; X64-NOBMI2-NEXT:    testl %eax, %edx
+; X64-NOBMI2-NEXT:    je .LBB15_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movzwl %cx, %eax
+; X64-NOBMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB15_3:
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_xor_16_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB15_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB15_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %eax
+; X64-BMI2-NEXT:    testl %eax, %ecx
+; X64-BMI2-NEXT:    je .LBB15_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movzwl %si, %eax
+; X64-BMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB15_3:
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %shl = shl nuw i32 1, %conv
+  %conv1 = trunc i32 %shl to i16
+  %0 = atomicrmw xor ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %0 to i32
+  %and = and i32 %shl, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %idxprom
+  %1 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %1, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_mask0_xor_16_gpr_br(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_xor_16_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ebx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl %ebx, %ecx
+; X86-NOBMI2-NEXT:    andb $15, %cl
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB16_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    xorl %esi, %ecx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %cx, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB16_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %eax
+; X86-NOBMI2-NEXT:    btl %ebx, %eax
+; X86-NOBMI2-NEXT:    jae .LBB16_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movzwl %bx, %eax
+; X86-NOBMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-NOBMI2-NEXT:    jmp .LBB16_5
+; X86-NOBMI2-NEXT:  .LBB16_3:
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:  .LBB16_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_xor_16_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl %edx, %eax
+; X86-BMI2-NEXT:    andb $15, %al
+; X86-BMI2-NEXT:    movl $1, %esi
+; X86-BMI2-NEXT:    shlxl %eax, %esi, %esi
+; X86-BMI2-NEXT:    movzwl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB16_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    xorl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%ecx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB16_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %eax
+; X86-BMI2-NEXT:    btl %edx, %eax
+; X86-BMI2-NEXT:    jae .LBB16_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movzwl %dx, %eax
+; X86-BMI2-NEXT:    movzwl (%ecx,%eax,2), %eax
+; X86-BMI2-NEXT:    jmp .LBB16_5
+; X86-BMI2-NEXT:  .LBB16_3:
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:  .LBB16_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_xor_16_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andb $15, %cl
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB16_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    xorl %edx, %ecx
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB16_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %eax
+; X64-NOBMI2-NEXT:    btl %esi, %eax
+; X64-NOBMI2-NEXT:    jae .LBB16_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movzwl %si, %eax
+; X64-NOBMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB16_3:
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_xor_16_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andb $15, %al
+; X64-BMI2-NEXT:    movl $1, %ecx
+; X64-BMI2-NEXT:    shlxl %eax, %ecx, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB16_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB16_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %eax
+; X64-BMI2-NEXT:    btl %esi, %eax
+; X64-BMI2-NEXT:    jae .LBB16_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movzwl %si, %eax
+; X64-BMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB16_3:
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i16 %c, 15
+  %shl = shl nuw i16 1, %0
+  %1 = atomicrmw xor ptr %v, i16 %shl monotonic, align 2
+  %conv2 = zext i16 %1 to i32
+  %conv3 = zext i16 %c to i32
+  %shl4 = shl nuw i32 1, %conv3
+  %and = and i32 %shl4, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %conv = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %conv
+  %2 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %2, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_mask1_xor_16_gpr_br(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_xor_16_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB17_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    xorl %esi, %edi
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB17_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %eax
+; X86-NOBMI2-NEXT:    movl %ecx, %esi
+; X86-NOBMI2-NEXT:    andl $15, %esi
+; X86-NOBMI2-NEXT:    btl %esi, %eax
+; X86-NOBMI2-NEXT:    jae .LBB17_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movzwl %cx, %eax
+; X86-NOBMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-NOBMI2-NEXT:    jmp .LBB17_5
+; X86-NOBMI2-NEXT:  .LBB17_3:
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:  .LBB17_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_xor_16_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %edx, %eax, %esi
+; X86-BMI2-NEXT:    movzwl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB17_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    xorl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%ecx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB17_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %eax
+; X86-BMI2-NEXT:    movl %edx, %esi
+; X86-BMI2-NEXT:    andl $15, %esi
+; X86-BMI2-NEXT:    btl %esi, %eax
+; X86-BMI2-NEXT:    jae .LBB17_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movzwl %dx, %eax
+; X86-BMI2-NEXT:    movzwl (%ecx,%eax,2), %eax
+; X86-BMI2-NEXT:    jmp .LBB17_5
+; X86-BMI2-NEXT:  .LBB17_3:
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:  .LBB17_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_xor_16_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB17_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    xorl %edx, %esi
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB17_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %eax
+; X64-NOBMI2-NEXT:    movl %ecx, %edx
+; X64-NOBMI2-NEXT:    andl $15, %edx
+; X64-NOBMI2-NEXT:    btl %edx, %eax
+; X64-NOBMI2-NEXT:    jae .LBB17_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movzwl %cx, %eax
+; X64-NOBMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB17_3:
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_xor_16_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB17_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB17_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %eax
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    andl $15, %ecx
+; X64-BMI2-NEXT:    btl %ecx, %eax
+; X64-BMI2-NEXT:    jae .LBB17_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movzwl %si, %eax
+; X64-BMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB17_3:
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %shl = shl nuw i32 1, %conv
+  %conv1 = trunc i32 %shl to i16
+  %0 = atomicrmw xor ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %0 to i32
+  %1 = and i16 %c, 15
+  %sh_prom = zext i16 %1 to i32
+  %shl4 = shl nuw nsw i32 1, %sh_prom
+  %and = and i32 %shl4, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %conv3 = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %conv3
+  %2 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %2, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_mask01_xor_16_gpr_br(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_xor_16_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ebx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl %ebx, %ecx
+; X86-NOBMI2-NEXT:    andb $15, %cl
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB18_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    xorl %esi, %ecx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %cx, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB18_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %eax
+; X86-NOBMI2-NEXT:    testl %eax, %esi
+; X86-NOBMI2-NEXT:    je .LBB18_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movzwl %bx, %eax
+; X86-NOBMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-NOBMI2-NEXT:    jmp .LBB18_5
+; X86-NOBMI2-NEXT:  .LBB18_3:
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:  .LBB18_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_xor_16_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl %edx, %eax
+; X86-BMI2-NEXT:    andb $15, %al
+; X86-BMI2-NEXT:    movl $1, %esi
+; X86-BMI2-NEXT:    shlxl %eax, %esi, %esi
+; X86-BMI2-NEXT:    movzwl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB18_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    xorl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%ecx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB18_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %eax
+; X86-BMI2-NEXT:    testl %eax, %esi
+; X86-BMI2-NEXT:    je .LBB18_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movzwl %dx, %eax
+; X86-BMI2-NEXT:    movzwl (%ecx,%eax,2), %eax
+; X86-BMI2-NEXT:    jmp .LBB18_5
+; X86-BMI2-NEXT:  .LBB18_3:
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:  .LBB18_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_xor_16_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andb $15, %cl
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB18_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    xorl %edx, %ecx
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB18_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %eax
+; X64-NOBMI2-NEXT:    testl %eax, %edx
+; X64-NOBMI2-NEXT:    je .LBB18_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movzwl %si, %eax
+; X64-NOBMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB18_3:
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_xor_16_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andb $15, %al
+; X64-BMI2-NEXT:    movl $1, %ecx
+; X64-BMI2-NEXT:    shlxl %eax, %ecx, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB18_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB18_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %eax
+; X64-BMI2-NEXT:    testl %eax, %ecx
+; X64-BMI2-NEXT:    je .LBB18_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movzwl %si, %eax
+; X64-BMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB18_3:
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i16 %c, 15
+  %sh_prom = zext i16 %0 to i32
+  %shl = shl nuw nsw i32 1, %sh_prom
+  %conv1 = trunc i32 %shl to i16
+  %1 = atomicrmw xor ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %1 to i32
+  %and = and i32 %shl, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %conv = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %conv
+  %2 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %2, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_blsi_xor_16_gpr_br(ptr %v, i16 %c) {
+; X86-BMI2-LABEL: atomic_blsi_xor_16_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    blsil %ecx, %esi
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB19_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    xorl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB19_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %eax
+; X86-BMI2-NEXT:    testl %eax, %esi
+; X86-BMI2-NEXT:    je .LBB19_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movzwl %cx, %eax
+; X86-BMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-BMI2-NEXT:    jmp .LBB19_5
+; X86-BMI2-NEXT:  .LBB19_3:
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:  .LBB19_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_xor_16_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movzwl %si, %ecx
+; X64-BMI2-NEXT:    blsil %ecx, %edx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB19_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %esi
+; X64-BMI2-NEXT:    xorl %edx, %esi
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB19_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %eax
+; X64-BMI2-NEXT:    testl %eax, %edx
+; X64-BMI2-NEXT:    je .LBB19_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movzwl (%rdi,%rcx,2), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB19_3:
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %sub = sub nsw i32 0, %conv
+  %and = and i32 %conv, %sub
+  %conv2 = trunc i32 %and to i16
+  %0 = atomicrmw xor ptr %v, i16 %conv2 monotonic, align 2
+  %conv3 = zext i16 %0 to i32
+  %and8 = and i32 %and, %conv3
+  %tobool.not = icmp eq i32 %and8, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %idxprom
+  %1 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %1, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_xor_16_gpr_brz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_xor_16_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB20_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    xorl %esi, %edi
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB20_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %edi
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:    testl %edi, %esi
+; X86-NOBMI2-NEXT:    jne .LBB20_4
+; X86-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X86-NOBMI2-NEXT:    movzwl %cx, %eax
+; X86-NOBMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-NOBMI2-NEXT:  .LBB20_4: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_xor_16_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %edx, %eax, %esi
+; X86-BMI2-NEXT:    movzwl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB20_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    xorl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%ecx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB20_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %edi
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:    testl %edi, %esi
+; X86-BMI2-NEXT:    jne .LBB20_4
+; X86-BMI2-NEXT:  # %bb.3: # %if.then
+; X86-BMI2-NEXT:    movzwl %dx, %eax
+; X86-BMI2-NEXT:    movzwl (%ecx,%eax,2), %eax
+; X86-BMI2-NEXT:  .LBB20_4: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_xor_16_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB20_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    xorl %edx, %esi
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB20_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %esi
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    testl %esi, %edx
+; X64-NOBMI2-NEXT:    je .LBB20_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB20_3: # %if.then
+; X64-NOBMI2-NEXT:    movzwl %cx, %eax
+; X64-NOBMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_xor_16_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB20_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB20_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %edx
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    testl %edx, %ecx
+; X64-BMI2-NEXT:    je .LBB20_3
+; X64-BMI2-NEXT:  # %bb.4: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB20_3: # %if.then
+; X64-BMI2-NEXT:    movzwl %si, %eax
+; X64-BMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %shl = shl nuw i32 1, %conv
+  %conv1 = trunc i32 %shl to i16
+  %0 = atomicrmw xor ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %0 to i32
+  %and = and i32 %shl, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %idxprom
+  %1 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %1, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_mask0_xor_16_gpr_brz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_xor_16_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ebx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl %ebx, %ecx
+; X86-NOBMI2-NEXT:    andb $15, %cl
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB21_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    xorl %esi, %ecx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %cx, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB21_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %ecx
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:    btl %ebx, %ecx
+; X86-NOBMI2-NEXT:    jb .LBB21_4
+; X86-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X86-NOBMI2-NEXT:    movzwl %bx, %eax
+; X86-NOBMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-NOBMI2-NEXT:  .LBB21_4: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_xor_16_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl %edx, %eax
+; X86-BMI2-NEXT:    andb $15, %al
+; X86-BMI2-NEXT:    movl $1, %esi
+; X86-BMI2-NEXT:    shlxl %eax, %esi, %esi
+; X86-BMI2-NEXT:    movzwl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB21_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    xorl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%ecx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB21_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %esi
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:    btl %edx, %esi
+; X86-BMI2-NEXT:    jb .LBB21_4
+; X86-BMI2-NEXT:  # %bb.3: # %if.then
+; X86-BMI2-NEXT:    movzwl %dx, %eax
+; X86-BMI2-NEXT:    movzwl (%ecx,%eax,2), %eax
+; X86-BMI2-NEXT:  .LBB21_4: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_xor_16_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andb $15, %cl
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB21_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    xorl %edx, %ecx
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB21_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %ecx
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    btl %esi, %ecx
+; X64-NOBMI2-NEXT:    jae .LBB21_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB21_3: # %if.then
+; X64-NOBMI2-NEXT:    movzwl %si, %eax
+; X64-NOBMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_xor_16_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andb $15, %al
+; X64-BMI2-NEXT:    movl $1, %ecx
+; X64-BMI2-NEXT:    shlxl %eax, %ecx, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB21_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB21_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %ecx
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    btl %esi, %ecx
+; X64-BMI2-NEXT:    jae .LBB21_3
+; X64-BMI2-NEXT:  # %bb.4: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB21_3: # %if.then
+; X64-BMI2-NEXT:    movzwl %si, %eax
+; X64-BMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i16 %c, 15
+  %shl = shl nuw i16 1, %0
+  %1 = atomicrmw xor ptr %v, i16 %shl monotonic, align 2
+  %conv2 = zext i16 %1 to i32
+  %conv3 = zext i16 %c to i32
+  %shl4 = shl nuw i32 1, %conv3
+  %and = and i32 %shl4, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %conv = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %conv
+  %2 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %2, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_mask1_xor_16_gpr_brz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_xor_16_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB22_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    xorl %esi, %edi
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB22_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %esi
+; X86-NOBMI2-NEXT:    movl %ecx, %edi
+; X86-NOBMI2-NEXT:    andl $15, %edi
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:    btl %edi, %esi
+; X86-NOBMI2-NEXT:    jb .LBB22_4
+; X86-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X86-NOBMI2-NEXT:    movzwl %cx, %eax
+; X86-NOBMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-NOBMI2-NEXT:  .LBB22_4: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_xor_16_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %edx, %eax, %esi
+; X86-BMI2-NEXT:    movzwl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB22_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    xorl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%ecx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB22_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %esi
+; X86-BMI2-NEXT:    movl %edx, %edi
+; X86-BMI2-NEXT:    andl $15, %edi
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:    btl %edi, %esi
+; X86-BMI2-NEXT:    jb .LBB22_4
+; X86-BMI2-NEXT:  # %bb.3: # %if.then
+; X86-BMI2-NEXT:    movzwl %dx, %eax
+; X86-BMI2-NEXT:    movzwl (%ecx,%eax,2), %eax
+; X86-BMI2-NEXT:  .LBB22_4: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_xor_16_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB22_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    xorl %edx, %esi
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB22_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %edx
+; X64-NOBMI2-NEXT:    movl %ecx, %esi
+; X64-NOBMI2-NEXT:    andl $15, %esi
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    btl %esi, %edx
+; X64-NOBMI2-NEXT:    jae .LBB22_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB22_3: # %if.then
+; X64-NOBMI2-NEXT:    movzwl %cx, %eax
+; X64-NOBMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_xor_16_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB22_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB22_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %ecx
+; X64-BMI2-NEXT:    movl %esi, %edx
+; X64-BMI2-NEXT:    andl $15, %edx
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    btl %edx, %ecx
+; X64-BMI2-NEXT:    jae .LBB22_3
+; X64-BMI2-NEXT:  # %bb.4: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB22_3: # %if.then
+; X64-BMI2-NEXT:    movzwl %si, %eax
+; X64-BMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %shl = shl nuw i32 1, %conv
+  %conv1 = trunc i32 %shl to i16
+  %0 = atomicrmw xor ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %0 to i32
+  %1 = and i16 %c, 15
+  %sh_prom = zext i16 %1 to i32
+  %shl4 = shl nuw nsw i32 1, %sh_prom
+  %and = and i32 %shl4, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %conv3 = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %conv3
+  %2 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %2, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_mask01_xor_16_gpr_brz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_xor_16_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ebx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl %ebx, %ecx
+; X86-NOBMI2-NEXT:    andb $15, %cl
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB23_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    xorl %esi, %ecx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %cx, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB23_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %ecx
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:    testl %ecx, %esi
+; X86-NOBMI2-NEXT:    jne .LBB23_4
+; X86-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X86-NOBMI2-NEXT:    movzwl %bx, %eax
+; X86-NOBMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-NOBMI2-NEXT:  .LBB23_4: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_xor_16_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl %edx, %eax
+; X86-BMI2-NEXT:    andb $15, %al
+; X86-BMI2-NEXT:    movl $1, %esi
+; X86-BMI2-NEXT:    shlxl %eax, %esi, %esi
+; X86-BMI2-NEXT:    movzwl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB23_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    xorl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%ecx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB23_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %edi
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:    testl %edi, %esi
+; X86-BMI2-NEXT:    jne .LBB23_4
+; X86-BMI2-NEXT:  # %bb.3: # %if.then
+; X86-BMI2-NEXT:    movzwl %dx, %eax
+; X86-BMI2-NEXT:    movzwl (%ecx,%eax,2), %eax
+; X86-BMI2-NEXT:  .LBB23_4: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_xor_16_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andb $15, %cl
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB23_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    xorl %edx, %ecx
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB23_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %ecx
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    testl %ecx, %edx
+; X64-NOBMI2-NEXT:    je .LBB23_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB23_3: # %if.then
+; X64-NOBMI2-NEXT:    movzwl %si, %eax
+; X64-NOBMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_xor_16_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andb $15, %al
+; X64-BMI2-NEXT:    movl $1, %ecx
+; X64-BMI2-NEXT:    shlxl %eax, %ecx, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB23_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB23_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %edx
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    testl %edx, %ecx
+; X64-BMI2-NEXT:    je .LBB23_3
+; X64-BMI2-NEXT:  # %bb.4: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB23_3: # %if.then
+; X64-BMI2-NEXT:    movzwl %si, %eax
+; X64-BMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i16 %c, 15
+  %sh_prom = zext i16 %0 to i32
+  %shl = shl nuw nsw i32 1, %sh_prom
+  %conv1 = trunc i32 %shl to i16
+  %1 = atomicrmw xor ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %1 to i32
+  %and = and i32 %shl, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %conv = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %conv
+  %2 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %2, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_blsi_xor_16_gpr_brz(ptr %v, i16 %c) {
+; X86-BMI2-LABEL: atomic_blsi_xor_16_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    blsil %ecx, %esi
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB24_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    xorl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB24_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %edi
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:    testl %edi, %esi
+; X86-BMI2-NEXT:    jne .LBB24_4
+; X86-BMI2-NEXT:  # %bb.3: # %if.then
+; X86-BMI2-NEXT:    movzwl %cx, %eax
+; X86-BMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-BMI2-NEXT:  .LBB24_4: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_xor_16_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movzwl %si, %ecx
+; X64-BMI2-NEXT:    blsil %ecx, %edx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB24_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %esi
+; X64-BMI2-NEXT:    xorl %edx, %esi
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB24_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %esi
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    testl %esi, %edx
+; X64-BMI2-NEXT:    je .LBB24_3
+; X64-BMI2-NEXT:  # %bb.4: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB24_3: # %if.then
+; X64-BMI2-NEXT:    movzwl (%rdi,%rcx,2), %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %sub = sub nsw i32 0, %conv
+  %and = and i32 %conv, %sub
+  %conv2 = trunc i32 %and to i16
+  %0 = atomicrmw xor ptr %v, i16 %conv2 monotonic, align 2
+  %conv3 = zext i16 %0 to i32
+  %and8 = and i32 %and, %conv3
+  %tobool.not = icmp eq i32 %and8, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %idxprom
+  %1 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %1, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_xor_16_gpr_brnz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_xor_16_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB25_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    xorl %esi, %edi
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB25_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %eax
+; X86-NOBMI2-NEXT:    testl %eax, %esi
+; X86-NOBMI2-NEXT:    je .LBB25_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movzwl %cx, %eax
+; X86-NOBMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-NOBMI2-NEXT:    jmp .LBB25_5
+; X86-NOBMI2-NEXT:  .LBB25_3:
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:  .LBB25_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_xor_16_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %edx, %eax, %esi
+; X86-BMI2-NEXT:    movzwl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB25_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    xorl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%ecx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB25_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %eax
+; X86-BMI2-NEXT:    testl %eax, %esi
+; X86-BMI2-NEXT:    je .LBB25_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movzwl %dx, %eax
+; X86-BMI2-NEXT:    movzwl (%ecx,%eax,2), %eax
+; X86-BMI2-NEXT:    jmp .LBB25_5
+; X86-BMI2-NEXT:  .LBB25_3:
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:  .LBB25_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_xor_16_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB25_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    xorl %edx, %esi
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB25_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %eax
+; X64-NOBMI2-NEXT:    testl %eax, %edx
+; X64-NOBMI2-NEXT:    je .LBB25_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movzwl %cx, %eax
+; X64-NOBMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB25_3:
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_xor_16_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB25_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB25_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %eax
+; X64-BMI2-NEXT:    testl %eax, %ecx
+; X64-BMI2-NEXT:    je .LBB25_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movzwl %si, %eax
+; X64-BMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB25_3:
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %shl = shl nuw i32 1, %conv
+  %conv1 = trunc i32 %shl to i16
+  %0 = atomicrmw xor ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %0 to i32
+  %and = and i32 %shl, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %idxprom
+  %1 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %1, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_mask0_xor_16_gpr_brnz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_xor_16_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ebx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl %ebx, %ecx
+; X86-NOBMI2-NEXT:    andb $15, %cl
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB26_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    xorl %esi, %ecx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %cx, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB26_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %eax
+; X86-NOBMI2-NEXT:    btl %ebx, %eax
+; X86-NOBMI2-NEXT:    jae .LBB26_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movzwl %bx, %eax
+; X86-NOBMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-NOBMI2-NEXT:    jmp .LBB26_5
+; X86-NOBMI2-NEXT:  .LBB26_3:
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:  .LBB26_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_xor_16_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl %edx, %eax
+; X86-BMI2-NEXT:    andb $15, %al
+; X86-BMI2-NEXT:    movl $1, %esi
+; X86-BMI2-NEXT:    shlxl %eax, %esi, %esi
+; X86-BMI2-NEXT:    movzwl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB26_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    xorl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%ecx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB26_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %eax
+; X86-BMI2-NEXT:    btl %edx, %eax
+; X86-BMI2-NEXT:    jae .LBB26_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movzwl %dx, %eax
+; X86-BMI2-NEXT:    movzwl (%ecx,%eax,2), %eax
+; X86-BMI2-NEXT:    jmp .LBB26_5
+; X86-BMI2-NEXT:  .LBB26_3:
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:  .LBB26_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_xor_16_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andb $15, %cl
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB26_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    xorl %edx, %ecx
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB26_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %eax
+; X64-NOBMI2-NEXT:    btl %esi, %eax
+; X64-NOBMI2-NEXT:    jae .LBB26_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movzwl %si, %eax
+; X64-NOBMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB26_3:
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_xor_16_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andb $15, %al
+; X64-BMI2-NEXT:    movl $1, %ecx
+; X64-BMI2-NEXT:    shlxl %eax, %ecx, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB26_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB26_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %eax
+; X64-BMI2-NEXT:    btl %esi, %eax
+; X64-BMI2-NEXT:    jae .LBB26_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movzwl %si, %eax
+; X64-BMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB26_3:
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i16 %c, 15
+  %shl = shl nuw i16 1, %0
+  %1 = atomicrmw xor ptr %v, i16 %shl monotonic, align 2
+  %conv2 = zext i16 %1 to i32
+  %conv3 = zext i16 %c to i32
+  %shl4 = shl nuw i32 1, %conv3
+  %and = and i32 %shl4, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %conv = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %conv
+  %2 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %2, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_mask1_xor_16_gpr_brnz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_xor_16_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB27_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    xorl %esi, %edi
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB27_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %eax
+; X86-NOBMI2-NEXT:    movl %ecx, %esi
+; X86-NOBMI2-NEXT:    andl $15, %esi
+; X86-NOBMI2-NEXT:    btl %esi, %eax
+; X86-NOBMI2-NEXT:    jae .LBB27_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movzwl %cx, %eax
+; X86-NOBMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-NOBMI2-NEXT:    jmp .LBB27_5
+; X86-NOBMI2-NEXT:  .LBB27_3:
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:  .LBB27_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_xor_16_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %edx, %eax, %esi
+; X86-BMI2-NEXT:    movzwl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB27_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    xorl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%ecx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB27_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %eax
+; X86-BMI2-NEXT:    movl %edx, %esi
+; X86-BMI2-NEXT:    andl $15, %esi
+; X86-BMI2-NEXT:    btl %esi, %eax
+; X86-BMI2-NEXT:    jae .LBB27_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movzwl %dx, %eax
+; X86-BMI2-NEXT:    movzwl (%ecx,%eax,2), %eax
+; X86-BMI2-NEXT:    jmp .LBB27_5
+; X86-BMI2-NEXT:  .LBB27_3:
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:  .LBB27_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_xor_16_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB27_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    xorl %edx, %esi
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB27_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %eax
+; X64-NOBMI2-NEXT:    movl %ecx, %edx
+; X64-NOBMI2-NEXT:    andl $15, %edx
+; X64-NOBMI2-NEXT:    btl %edx, %eax
+; X64-NOBMI2-NEXT:    jae .LBB27_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movzwl %cx, %eax
+; X64-NOBMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB27_3:
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_xor_16_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB27_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB27_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %eax
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    andl $15, %ecx
+; X64-BMI2-NEXT:    btl %ecx, %eax
+; X64-BMI2-NEXT:    jae .LBB27_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movzwl %si, %eax
+; X64-BMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB27_3:
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %shl = shl nuw i32 1, %conv
+  %conv1 = trunc i32 %shl to i16
+  %0 = atomicrmw xor ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %0 to i32
+  %1 = and i16 %c, 15
+  %sh_prom = zext i16 %1 to i32
+  %shl4 = shl nuw nsw i32 1, %sh_prom
+  %and = and i32 %shl4, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %conv3 = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %conv3
+  %2 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %2, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_mask01_xor_16_gpr_brnz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_xor_16_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ebx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl %ebx, %ecx
+; X86-NOBMI2-NEXT:    andb $15, %cl
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB28_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    xorl %esi, %ecx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %cx, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB28_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %eax
+; X86-NOBMI2-NEXT:    testl %eax, %esi
+; X86-NOBMI2-NEXT:    je .LBB28_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movzwl %bx, %eax
+; X86-NOBMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-NOBMI2-NEXT:    jmp .LBB28_5
+; X86-NOBMI2-NEXT:  .LBB28_3:
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:  .LBB28_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_xor_16_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl %edx, %eax
+; X86-BMI2-NEXT:    andb $15, %al
+; X86-BMI2-NEXT:    movl $1, %esi
+; X86-BMI2-NEXT:    shlxl %eax, %esi, %esi
+; X86-BMI2-NEXT:    movzwl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB28_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    xorl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%ecx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB28_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %eax
+; X86-BMI2-NEXT:    testl %eax, %esi
+; X86-BMI2-NEXT:    je .LBB28_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movzwl %dx, %eax
+; X86-BMI2-NEXT:    movzwl (%ecx,%eax,2), %eax
+; X86-BMI2-NEXT:    jmp .LBB28_5
+; X86-BMI2-NEXT:  .LBB28_3:
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:  .LBB28_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_xor_16_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andb $15, %cl
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB28_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    xorl %edx, %ecx
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB28_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %eax
+; X64-NOBMI2-NEXT:    testl %eax, %edx
+; X64-NOBMI2-NEXT:    je .LBB28_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movzwl %si, %eax
+; X64-NOBMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB28_3:
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_xor_16_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andb $15, %al
+; X64-BMI2-NEXT:    movl $1, %ecx
+; X64-BMI2-NEXT:    shlxl %eax, %ecx, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB28_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB28_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %eax
+; X64-BMI2-NEXT:    testl %eax, %ecx
+; X64-BMI2-NEXT:    je .LBB28_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movzwl %si, %eax
+; X64-BMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB28_3:
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i16 %c, 15
+  %sh_prom = zext i16 %0 to i32
+  %shl = shl nuw nsw i32 1, %sh_prom
+  %conv1 = trunc i32 %shl to i16
+  %1 = atomicrmw xor ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %1 to i32
+  %and = and i32 %shl, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %conv = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %conv
+  %2 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %2, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_blsi_xor_16_gpr_brnz(ptr %v, i16 %c) {
+; X86-BMI2-LABEL: atomic_blsi_xor_16_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    blsil %ecx, %esi
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB29_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    xorl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB29_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %eax
+; X86-BMI2-NEXT:    testl %eax, %esi
+; X86-BMI2-NEXT:    je .LBB29_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movzwl %cx, %eax
+; X86-BMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-BMI2-NEXT:    jmp .LBB29_5
+; X86-BMI2-NEXT:  .LBB29_3:
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:  .LBB29_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_xor_16_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movzwl %si, %ecx
+; X64-BMI2-NEXT:    blsil %ecx, %edx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB29_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %esi
+; X64-BMI2-NEXT:    xorl %edx, %esi
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB29_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %eax
+; X64-BMI2-NEXT:    testl %eax, %edx
+; X64-BMI2-NEXT:    je .LBB29_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movzwl (%rdi,%rcx,2), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB29_3:
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %sub = sub nsw i32 0, %conv
+  %and = and i32 %conv, %sub
+  %conv2 = trunc i32 %and to i16
+  %0 = atomicrmw xor ptr %v, i16 %conv2 monotonic, align 2
+  %conv3 = zext i16 %0 to i32
+  %and8 = and i32 %and, %conv3
+  %tobool.not = icmp eq i32 %and8, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %idxprom
+  %1 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %1, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_or_16_gpr_val(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_or_16_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl $1, %edx
+; X86-NOBMI2-NEXT:    shll %cl, %edx
+; X86-NOBMI2-NEXT:    movzwl (%esi), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB30_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    orl %edx, %ecx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %cx, (%esi)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB30_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edx, %eax
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_or_16_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    .cfi_offset %esi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl $1, %ecx
+; X86-BMI2-NEXT:    shlxl %eax, %ecx, %ecx
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB30_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %esi
+; X86-BMI2-NEXT:    orl %ecx, %esi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %si, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB30_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ecx, %eax
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_or_16_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB30_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    orl %edx, %ecx
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB30_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    andl %edx, %eax
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_or_16_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB30_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB30_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    andl %ecx, %eax
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %shl = shl nuw i32 1, %conv
+  %conv1 = trunc i32 %shl to i16
+  %0 = atomicrmw or ptr %v, i16 %conv1 monotonic, align 2
+  %conv5 = and i16 %0, %conv1
+  ret i16 %conv5
+}
+
+define i16 @atomic_shl1_mask0_or_16_gpr_val(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_or_16_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andb $15, %cl
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    movzwl (%esi), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB31_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    orl %edi, %ecx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %cx, (%esi)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB31_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    andl %esi, %eax
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_or_16_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    andb $15, %al
+; X86-BMI2-NEXT:    movl $1, %esi
+; X86-BMI2-NEXT:    shlxl %eax, %esi, %esi
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB31_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    orl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB31_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl $1, %edx
+; X86-BMI2-NEXT:    shlxl %ecx, %edx, %ecx
+; X86-BMI2-NEXT:    andl %ecx, %eax
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_or_16_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andb $15, %cl
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB31_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    orl %edx, %ecx
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB31_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    andl %edx, %eax
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_or_16_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andb $15, %al
+; X64-BMI2-NEXT:    movl $1, %ecx
+; X64-BMI2-NEXT:    shlxl %eax, %ecx, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB31_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB31_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movl $1, %ecx
+; X64-BMI2-NEXT:    shlxl %esi, %ecx, %ecx
+; X64-BMI2-NEXT:    andl %ecx, %eax
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i16 %c, 15
+  %shl = shl nuw i16 1, %0
+  %1 = atomicrmw or ptr %v, i16 %shl monotonic, align 2
+  %conv3 = zext i16 %c to i32
+  %shl4 = shl nuw i32 1, %conv3
+  %2 = trunc i32 %shl4 to i16
+  %conv5 = and i16 %1, %2
+  ret i16 %conv5
+}
+
+define i16 @atomic_shl1_mask1_or_16_gpr_val(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_or_16_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB32_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    orl %esi, %edi
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB32_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andb $15, %cl
+; X86-NOBMI2-NEXT:    movl $1, %edx
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $cx
+; X86-NOBMI2-NEXT:    shll %cl, %edx
+; X86-NOBMI2-NEXT:    andl %edx, %eax
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_or_16_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %esi
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB32_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    orl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB32_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andb $15, %cl
+; X86-BMI2-NEXT:    movl $1, %edx
+; X86-BMI2-NEXT:    shlxl %ecx, %edx, %ecx
+; X86-BMI2-NEXT:    andl %ecx, %eax
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_or_16_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB32_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    orl %edx, %esi
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB32_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    andb $15, %cl
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    andl %edx, %eax
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_or_16_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB32_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB32_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    andb $15, %sil
+; X64-BMI2-NEXT:    movl $1, %ecx
+; X64-BMI2-NEXT:    shlxl %esi, %ecx, %ecx
+; X64-BMI2-NEXT:    andl %ecx, %eax
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %shl = shl nuw i32 1, %conv
+  %conv1 = trunc i32 %shl to i16
+  %0 = atomicrmw or ptr %v, i16 %conv1 monotonic, align 2
+  %1 = and i16 %c, 15
+  %shl4 = shl nuw i16 1, %1
+  %and = and i16 %0, %shl4
+  ret i16 %and
+}
+
+define i16 @atomic_shl1_mask01_or_16_gpr_val(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_or_16_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $15, %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    lock btsw %cx, (%edx)
+; X86-NOBMI2-NEXT:    setb %al
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    shll %cl, %eax
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_or_16_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    andl $15, %ecx
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    lock btsw %cx, (%eax)
+; X86-BMI2-NEXT:    setb %dl
+; X86-BMI2-NEXT:    shlxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_or_16_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andl $15, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btsw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %eax
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_or_16_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $15, %esi
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btsw %si, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %eax
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i16 %c, 15
+  %shl = shl nuw i16 1, %0
+  %1 = atomicrmw or ptr %v, i16 %shl monotonic, align 2
+  %conv7 = and i16 %1, %shl
+  ret i16 %conv7
+}
+
+define i16 @atomic_blsi_or_16_gpr_val(ptr %v, i16 %c) {
+; X86-BMI2-LABEL: atomic_blsi_or_16_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    .cfi_offset %esi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    blsil %eax, %ecx
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB34_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %esi
+; X86-BMI2-NEXT:    orl %ecx, %esi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %si, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB34_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ecx, %eax
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_or_16_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    blsil %esi, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB34_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB34_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    andl %ecx, %eax
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %sub = sub i16 0, %c
+  %and = and i16 %sub, %c
+  %0 = atomicrmw or ptr %v, i16 %and monotonic, align 2
+  %conv9 = and i16 %0, %and
+  ret i16 %conv9
+}
+
+define i16 @atomic_shl1_or_16_gpr_valz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_or_16_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl $1, %edx
+; X86-NOBMI2-NEXT:    shll %cl, %edx
+; X86-NOBMI2-NEXT:    movzwl (%esi), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB35_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    orl %edx, %ecx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %cx, (%esi)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB35_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    testl %ecx, %edx
+; X86-NOBMI2-NEXT:    sete %al
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_or_16_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    .cfi_offset %esi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl $1, %edx
+; X86-BMI2-NEXT:    shlxl %eax, %edx, %edx
+; X86-BMI2-NEXT:    movzwl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB35_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %esi
+; X86-BMI2-NEXT:    orl %edx, %esi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %si, (%ecx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB35_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %ecx
+; X86-BMI2-NEXT:    xorl %eax, %eax
+; X86-BMI2-NEXT:    testl %ecx, %edx
+; X86-BMI2-NEXT:    sete %al
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_or_16_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB35_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    orl %edx, %ecx
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB35_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    testl %ecx, %edx
+; X64-NOBMI2-NEXT:    sete %al
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_or_16_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB35_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB35_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %edx
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    testl %edx, %ecx
+; X64-BMI2-NEXT:    sete %al
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %shl = shl nuw i32 1, %conv
+  %conv1 = trunc i32 %shl to i16
+  %0 = atomicrmw or ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %0 to i32
+  %and = and i32 %shl, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  %conv5 = zext i1 %tobool.not to i16
+  ret i16 %conv5
+}
+
+define i16 @atomic_shl1_mask0_or_16_gpr_valz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_or_16_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andb $15, %cl
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    movzwl (%esi), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB36_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    orl %edi, %ecx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %cx, (%esi)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB36_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    btl %edx, %ecx
+; X86-NOBMI2-NEXT:    setae %al
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_or_16_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    andb $15, %al
+; X86-BMI2-NEXT:    movl $1, %esi
+; X86-BMI2-NEXT:    shlxl %eax, %esi, %esi
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB36_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    orl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB36_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %edx
+; X86-BMI2-NEXT:    xorl %eax, %eax
+; X86-BMI2-NEXT:    btl %ecx, %edx
+; X86-BMI2-NEXT:    setae %al
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_or_16_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andb $15, %cl
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB36_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    orl %edx, %ecx
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB36_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    btl %esi, %ecx
+; X64-NOBMI2-NEXT:    setae %al
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_or_16_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andb $15, %al
+; X64-BMI2-NEXT:    movl $1, %ecx
+; X64-BMI2-NEXT:    shlxl %eax, %ecx, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB36_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB36_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %ecx
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    btl %esi, %ecx
+; X64-BMI2-NEXT:    setae %al
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i16 %c, 15
+  %shl = shl nuw i16 1, %0
+  %1 = atomicrmw or ptr %v, i16 %shl monotonic, align 2
+  %conv2 = zext i16 %1 to i32
+  %conv3 = zext i16 %c to i32
+  %shl4 = shl nuw i32 1, %conv3
+  %and = and i32 %shl4, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  %conv5 = zext i1 %tobool.not to i16
+  ret i16 %conv5
+}
+
+define i16 @atomic_shl1_mask1_or_16_gpr_valz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_or_16_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB37_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    orl %esi, %edi
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB37_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %edx
+; X86-NOBMI2-NEXT:    andl $15, %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    btl %ecx, %edx
+; X86-NOBMI2-NEXT:    setae %al
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_or_16_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %esi
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB37_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    orl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB37_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %edx
+; X86-BMI2-NEXT:    andl $15, %ecx
+; X86-BMI2-NEXT:    xorl %eax, %eax
+; X86-BMI2-NEXT:    btl %ecx, %edx
+; X86-BMI2-NEXT:    setae %al
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_or_16_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB37_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    orl %edx, %esi
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB37_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %edx
+; X64-NOBMI2-NEXT:    andl $15, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    btl %ecx, %edx
+; X64-NOBMI2-NEXT:    setae %al
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_or_16_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB37_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB37_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %ecx
+; X64-BMI2-NEXT:    andl $15, %esi
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    btl %esi, %ecx
+; X64-BMI2-NEXT:    setae %al
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %shl = shl nuw i32 1, %conv
+  %conv1 = trunc i32 %shl to i16
+  %0 = atomicrmw or ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %0 to i32
+  %1 = and i16 %c, 15
+  %sh_prom = zext i16 %1 to i32
+  %shl4 = shl nuw nsw i32 1, %sh_prom
+  %and = and i32 %shl4, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  %conv5 = zext i1 %tobool.not to i16
+  ret i16 %conv5
+}
+
+define i16 @atomic_shl1_mask01_or_16_gpr_valz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_or_16_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andb $15, %cl
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB38_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    orl %esi, %ecx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %cx, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB38_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    testl %ecx, %esi
+; X86-NOBMI2-NEXT:    sete %al
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_or_16_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    .cfi_offset %esi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    andb $15, %al
+; X86-BMI2-NEXT:    movl $1, %edx
+; X86-BMI2-NEXT:    shlxl %eax, %edx, %edx
+; X86-BMI2-NEXT:    movzwl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB38_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %esi
+; X86-BMI2-NEXT:    orl %edx, %esi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %si, (%ecx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB38_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %ecx
+; X86-BMI2-NEXT:    xorl %eax, %eax
+; X86-BMI2-NEXT:    testl %ecx, %edx
+; X86-BMI2-NEXT:    sete %al
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_or_16_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andb $15, %cl
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB38_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    orl %edx, %ecx
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB38_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    testl %ecx, %edx
+; X64-NOBMI2-NEXT:    sete %al
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_or_16_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andb $15, %sil
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB38_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB38_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %edx
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    testl %edx, %ecx
+; X64-BMI2-NEXT:    sete %al
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i16 %c, 15
+  %sh_prom = zext i16 %0 to i32
+  %shl = shl nuw nsw i32 1, %sh_prom
+  %conv1 = trunc i32 %shl to i16
+  %1 = atomicrmw or ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %1 to i32
+  %and = and i32 %shl, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  %conv7 = zext i1 %tobool.not to i16
+  ret i16 %conv7
+}
+
+define i16 @atomic_blsi_or_16_gpr_valz(ptr %v, i16 %c) {
+; X86-BMI2-LABEL: atomic_blsi_or_16_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    .cfi_offset %esi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    blsil %eax, %ecx
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB39_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %esi
+; X86-BMI2-NEXT:    orl %ecx, %esi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %si, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB39_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %edx
+; X86-BMI2-NEXT:    xorl %eax, %eax
+; X86-BMI2-NEXT:    testl %edx, %ecx
+; X86-BMI2-NEXT:    sete %al
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_or_16_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movzwl %si, %eax
+; X64-BMI2-NEXT:    blsil %eax, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB39_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB39_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %edx
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    testl %edx, %ecx
+; X64-BMI2-NEXT:    sete %al
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %sub = sub nsw i32 0, %conv
+  %and = and i32 %conv, %sub
+  %conv2 = trunc i32 %and to i16
+  %0 = atomicrmw or ptr %v, i16 %conv2 monotonic, align 2
+  %conv3 = zext i16 %0 to i32
+  %and8 = and i32 %and, %conv3
+  %tobool.not = icmp eq i32 %and8, 0
+  %conv9 = zext i1 %tobool.not to i16
+  ret i16 %conv9
+}
+
+define i16 @atomic_shl1_or_16_gpr_valnz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_or_16_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl $1, %edx
+; X86-NOBMI2-NEXT:    shll %cl, %edx
+; X86-NOBMI2-NEXT:    movzwl (%esi), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB40_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    orl %edx, %ecx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %cx, (%esi)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB40_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    testl %ecx, %edx
+; X86-NOBMI2-NEXT:    setne %al
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_or_16_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    .cfi_offset %esi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl $1, %edx
+; X86-BMI2-NEXT:    shlxl %eax, %edx, %edx
+; X86-BMI2-NEXT:    movzwl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB40_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %esi
+; X86-BMI2-NEXT:    orl %edx, %esi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %si, (%ecx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB40_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %ecx
+; X86-BMI2-NEXT:    xorl %eax, %eax
+; X86-BMI2-NEXT:    testl %ecx, %edx
+; X86-BMI2-NEXT:    setne %al
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_or_16_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB40_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    orl %edx, %ecx
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB40_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    testl %ecx, %edx
+; X64-NOBMI2-NEXT:    setne %al
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_or_16_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB40_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB40_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %edx
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    testl %edx, %ecx
+; X64-BMI2-NEXT:    setne %al
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %shl = shl nuw i32 1, %conv
+  %conv1 = trunc i32 %shl to i16
+  %0 = atomicrmw or ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %0 to i32
+  %and = and i32 %shl, %conv2
+  %tobool = icmp ne i32 %and, 0
+  %conv6 = zext i1 %tobool to i16
+  ret i16 %conv6
+}
+
+define i16 @atomic_shl1_mask0_or_16_gpr_valnz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_or_16_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andb $15, %cl
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    movzwl (%esi), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB41_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    orl %edi, %ecx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %cx, (%esi)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB41_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    btl %edx, %ecx
+; X86-NOBMI2-NEXT:    setb %al
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_or_16_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    andb $15, %al
+; X86-BMI2-NEXT:    movl $1, %esi
+; X86-BMI2-NEXT:    shlxl %eax, %esi, %esi
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB41_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    orl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB41_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %edx
+; X86-BMI2-NEXT:    xorl %eax, %eax
+; X86-BMI2-NEXT:    btl %ecx, %edx
+; X86-BMI2-NEXT:    setb %al
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_or_16_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andb $15, %cl
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB41_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    orl %edx, %ecx
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB41_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    btl %esi, %ecx
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_or_16_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andb $15, %al
+; X64-BMI2-NEXT:    movl $1, %ecx
+; X64-BMI2-NEXT:    shlxl %eax, %ecx, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB41_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB41_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %ecx
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    btl %esi, %ecx
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i16 %c, 15
+  %shl = shl nuw i16 1, %0
+  %1 = atomicrmw or ptr %v, i16 %shl monotonic, align 2
+  %conv2 = zext i16 %1 to i32
+  %conv3 = zext i16 %c to i32
+  %shl4 = shl nuw i32 1, %conv3
+  %and = and i32 %shl4, %conv2
+  %tobool = icmp ne i32 %and, 0
+  %conv6 = zext i1 %tobool to i16
+  ret i16 %conv6
+}
+
+define i16 @atomic_shl1_mask1_or_16_gpr_valnz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_or_16_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB42_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    orl %esi, %edi
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB42_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %edx
+; X86-NOBMI2-NEXT:    andl $15, %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    btl %ecx, %edx
+; X86-NOBMI2-NEXT:    setb %al
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_or_16_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %esi
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB42_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    orl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB42_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %edx
+; X86-BMI2-NEXT:    andl $15, %ecx
+; X86-BMI2-NEXT:    xorl %eax, %eax
+; X86-BMI2-NEXT:    btl %ecx, %edx
+; X86-BMI2-NEXT:    setb %al
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_or_16_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB42_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    orl %edx, %esi
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB42_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %edx
+; X64-NOBMI2-NEXT:    andl $15, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    btl %ecx, %edx
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_or_16_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB42_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB42_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %ecx
+; X64-BMI2-NEXT:    andl $15, %esi
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    btl %esi, %ecx
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %shl = shl nuw i32 1, %conv
+  %conv1 = trunc i32 %shl to i16
+  %0 = atomicrmw or ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %0 to i32
+  %1 = and i16 %c, 15
+  %sh_prom = zext i16 %1 to i32
+  %shl4 = shl nuw nsw i32 1, %sh_prom
+  %and = and i32 %shl4, %conv2
+  %tobool = icmp ne i32 %and, 0
+  %conv6 = zext i1 %tobool to i16
+  ret i16 %conv6
+}
+
+define i16 @atomic_shl1_mask01_or_16_gpr_valnz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_or_16_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andb $15, %cl
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB43_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    orl %esi, %ecx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %cx, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB43_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    testl %ecx, %esi
+; X86-NOBMI2-NEXT:    setne %al
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_or_16_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    .cfi_offset %esi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    andb $15, %al
+; X86-BMI2-NEXT:    movl $1, %edx
+; X86-BMI2-NEXT:    shlxl %eax, %edx, %edx
+; X86-BMI2-NEXT:    movzwl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB43_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %esi
+; X86-BMI2-NEXT:    orl %edx, %esi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %si, (%ecx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB43_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %ecx
+; X86-BMI2-NEXT:    xorl %eax, %eax
+; X86-BMI2-NEXT:    testl %ecx, %edx
+; X86-BMI2-NEXT:    setne %al
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_or_16_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andb $15, %cl
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB43_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    orl %edx, %ecx
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB43_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    testl %ecx, %edx
+; X64-NOBMI2-NEXT:    setne %al
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_or_16_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andb $15, %sil
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB43_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB43_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %edx
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    testl %edx, %ecx
+; X64-BMI2-NEXT:    setne %al
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i16 %c, 15
+  %sh_prom = zext i16 %0 to i32
+  %shl = shl nuw nsw i32 1, %sh_prom
+  %conv1 = trunc i32 %shl to i16
+  %1 = atomicrmw or ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %1 to i32
+  %and = and i32 %shl, %conv2
+  %tobool = icmp ne i32 %and, 0
+  %conv8 = zext i1 %tobool to i16
+  ret i16 %conv8
+}
+
+define i16 @atomic_blsi_or_16_gpr_valnz(ptr %v, i16 %c) {
+; X86-BMI2-LABEL: atomic_blsi_or_16_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    .cfi_offset %esi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    blsil %eax, %ecx
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB44_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %esi
+; X86-BMI2-NEXT:    orl %ecx, %esi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %si, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB44_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %edx
+; X86-BMI2-NEXT:    xorl %eax, %eax
+; X86-BMI2-NEXT:    testl %edx, %ecx
+; X86-BMI2-NEXT:    setne %al
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_or_16_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movzwl %si, %eax
+; X64-BMI2-NEXT:    blsil %eax, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB44_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB44_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %edx
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    testl %edx, %ecx
+; X64-BMI2-NEXT:    setne %al
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %sub = sub nsw i32 0, %conv
+  %and = and i32 %conv, %sub
+  %conv2 = trunc i32 %and to i16
+  %0 = atomicrmw or ptr %v, i16 %conv2 monotonic, align 2
+  %conv3 = zext i16 %0 to i32
+  %and8 = and i32 %and, %conv3
+  %tobool = icmp ne i32 %and8, 0
+  %conv10 = zext i1 %tobool to i16
+  ret i16 %conv10
+}
+
+define i16 @atomic_shl1_or_16_gpr_br(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_or_16_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB45_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    orl %esi, %edi
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB45_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %eax
+; X86-NOBMI2-NEXT:    testl %eax, %esi
+; X86-NOBMI2-NEXT:    je .LBB45_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movzwl %cx, %eax
+; X86-NOBMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-NOBMI2-NEXT:    jmp .LBB45_5
+; X86-NOBMI2-NEXT:  .LBB45_3:
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:  .LBB45_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_or_16_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %edx, %eax, %esi
+; X86-BMI2-NEXT:    movzwl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB45_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    orl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%ecx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB45_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %eax
+; X86-BMI2-NEXT:    testl %eax, %esi
+; X86-BMI2-NEXT:    je .LBB45_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movzwl %dx, %eax
+; X86-BMI2-NEXT:    movzwl (%ecx,%eax,2), %eax
+; X86-BMI2-NEXT:    jmp .LBB45_5
+; X86-BMI2-NEXT:  .LBB45_3:
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:  .LBB45_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_or_16_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB45_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    orl %edx, %esi
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB45_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %eax
+; X64-NOBMI2-NEXT:    testl %eax, %edx
+; X64-NOBMI2-NEXT:    je .LBB45_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movzwl %cx, %eax
+; X64-NOBMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB45_3:
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_or_16_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB45_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB45_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %eax
+; X64-BMI2-NEXT:    testl %eax, %ecx
+; X64-BMI2-NEXT:    je .LBB45_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movzwl %si, %eax
+; X64-BMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB45_3:
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %shl = shl nuw i32 1, %conv
+  %conv1 = trunc i32 %shl to i16
+  %0 = atomicrmw or ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %0 to i32
+  %and = and i32 %shl, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %idxprom
+  %1 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %1, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_mask0_or_16_gpr_br(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_or_16_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ebx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl %ebx, %ecx
+; X86-NOBMI2-NEXT:    andb $15, %cl
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB46_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    orl %esi, %ecx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %cx, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB46_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %eax
+; X86-NOBMI2-NEXT:    btl %ebx, %eax
+; X86-NOBMI2-NEXT:    jae .LBB46_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movzwl %bx, %eax
+; X86-NOBMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-NOBMI2-NEXT:    jmp .LBB46_5
+; X86-NOBMI2-NEXT:  .LBB46_3:
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:  .LBB46_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_or_16_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl %edx, %eax
+; X86-BMI2-NEXT:    andb $15, %al
+; X86-BMI2-NEXT:    movl $1, %esi
+; X86-BMI2-NEXT:    shlxl %eax, %esi, %esi
+; X86-BMI2-NEXT:    movzwl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB46_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    orl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%ecx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB46_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %eax
+; X86-BMI2-NEXT:    btl %edx, %eax
+; X86-BMI2-NEXT:    jae .LBB46_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movzwl %dx, %eax
+; X86-BMI2-NEXT:    movzwl (%ecx,%eax,2), %eax
+; X86-BMI2-NEXT:    jmp .LBB46_5
+; X86-BMI2-NEXT:  .LBB46_3:
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:  .LBB46_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_or_16_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andb $15, %cl
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB46_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    orl %edx, %ecx
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB46_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %eax
+; X64-NOBMI2-NEXT:    btl %esi, %eax
+; X64-NOBMI2-NEXT:    jae .LBB46_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movzwl %si, %eax
+; X64-NOBMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB46_3:
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_or_16_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andb $15, %al
+; X64-BMI2-NEXT:    movl $1, %ecx
+; X64-BMI2-NEXT:    shlxl %eax, %ecx, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB46_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB46_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %eax
+; X64-BMI2-NEXT:    btl %esi, %eax
+; X64-BMI2-NEXT:    jae .LBB46_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movzwl %si, %eax
+; X64-BMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB46_3:
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i16 %c, 15
+  %shl = shl nuw i16 1, %0
+  %1 = atomicrmw or ptr %v, i16 %shl monotonic, align 2
+  %conv2 = zext i16 %1 to i32
+  %conv3 = zext i16 %c to i32
+  %shl4 = shl nuw i32 1, %conv3
+  %and = and i32 %shl4, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %conv = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %conv
+  %2 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %2, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_mask1_or_16_gpr_br(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_or_16_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB47_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    orl %esi, %edi
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB47_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %eax
+; X86-NOBMI2-NEXT:    movl %ecx, %esi
+; X86-NOBMI2-NEXT:    andl $15, %esi
+; X86-NOBMI2-NEXT:    btl %esi, %eax
+; X86-NOBMI2-NEXT:    jae .LBB47_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movzwl %cx, %eax
+; X86-NOBMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-NOBMI2-NEXT:    jmp .LBB47_5
+; X86-NOBMI2-NEXT:  .LBB47_3:
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:  .LBB47_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_or_16_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %edx, %eax, %esi
+; X86-BMI2-NEXT:    movzwl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB47_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    orl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%ecx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB47_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %eax
+; X86-BMI2-NEXT:    movl %edx, %esi
+; X86-BMI2-NEXT:    andl $15, %esi
+; X86-BMI2-NEXT:    btl %esi, %eax
+; X86-BMI2-NEXT:    jae .LBB47_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movzwl %dx, %eax
+; X86-BMI2-NEXT:    movzwl (%ecx,%eax,2), %eax
+; X86-BMI2-NEXT:    jmp .LBB47_5
+; X86-BMI2-NEXT:  .LBB47_3:
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:  .LBB47_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_or_16_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB47_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    orl %edx, %esi
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB47_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %eax
+; X64-NOBMI2-NEXT:    movl %ecx, %edx
+; X64-NOBMI2-NEXT:    andl $15, %edx
+; X64-NOBMI2-NEXT:    btl %edx, %eax
+; X64-NOBMI2-NEXT:    jae .LBB47_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movzwl %cx, %eax
+; X64-NOBMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB47_3:
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_or_16_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB47_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB47_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %eax
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    andl $15, %ecx
+; X64-BMI2-NEXT:    btl %ecx, %eax
+; X64-BMI2-NEXT:    jae .LBB47_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movzwl %si, %eax
+; X64-BMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB47_3:
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %shl = shl nuw i32 1, %conv
+  %conv1 = trunc i32 %shl to i16
+  %0 = atomicrmw or ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %0 to i32
+  %1 = and i16 %c, 15
+  %sh_prom = zext i16 %1 to i32
+  %shl4 = shl nuw nsw i32 1, %sh_prom
+  %and = and i32 %shl4, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %conv3 = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %conv3
+  %2 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %2, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_mask01_or_16_gpr_br(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_or_16_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ebx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl %ebx, %ecx
+; X86-NOBMI2-NEXT:    andb $15, %cl
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB48_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    orl %esi, %ecx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %cx, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB48_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %eax
+; X86-NOBMI2-NEXT:    testl %eax, %esi
+; X86-NOBMI2-NEXT:    je .LBB48_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movzwl %bx, %eax
+; X86-NOBMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-NOBMI2-NEXT:    jmp .LBB48_5
+; X86-NOBMI2-NEXT:  .LBB48_3:
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:  .LBB48_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_or_16_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl %edx, %eax
+; X86-BMI2-NEXT:    andb $15, %al
+; X86-BMI2-NEXT:    movl $1, %esi
+; X86-BMI2-NEXT:    shlxl %eax, %esi, %esi
+; X86-BMI2-NEXT:    movzwl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB48_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    orl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%ecx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB48_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %eax
+; X86-BMI2-NEXT:    testl %eax, %esi
+; X86-BMI2-NEXT:    je .LBB48_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movzwl %dx, %eax
+; X86-BMI2-NEXT:    movzwl (%ecx,%eax,2), %eax
+; X86-BMI2-NEXT:    jmp .LBB48_5
+; X86-BMI2-NEXT:  .LBB48_3:
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:  .LBB48_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_or_16_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andb $15, %cl
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB48_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    orl %edx, %ecx
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB48_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %eax
+; X64-NOBMI2-NEXT:    testl %eax, %edx
+; X64-NOBMI2-NEXT:    je .LBB48_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movzwl %si, %eax
+; X64-NOBMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB48_3:
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_or_16_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andb $15, %al
+; X64-BMI2-NEXT:    movl $1, %ecx
+; X64-BMI2-NEXT:    shlxl %eax, %ecx, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB48_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB48_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %eax
+; X64-BMI2-NEXT:    testl %eax, %ecx
+; X64-BMI2-NEXT:    je .LBB48_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movzwl %si, %eax
+; X64-BMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB48_3:
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i16 %c, 15
+  %sh_prom = zext i16 %0 to i32
+  %shl = shl nuw nsw i32 1, %sh_prom
+  %conv1 = trunc i32 %shl to i16
+  %1 = atomicrmw or ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %1 to i32
+  %and = and i32 %shl, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %conv = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %conv
+  %2 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %2, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_blsi_or_16_gpr_br(ptr %v, i16 %c) {
+; X86-BMI2-LABEL: atomic_blsi_or_16_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    blsil %ecx, %esi
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB49_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    orl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB49_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %eax
+; X86-BMI2-NEXT:    testl %eax, %esi
+; X86-BMI2-NEXT:    je .LBB49_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movzwl %cx, %eax
+; X86-BMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-BMI2-NEXT:    jmp .LBB49_5
+; X86-BMI2-NEXT:  .LBB49_3:
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:  .LBB49_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_or_16_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movzwl %si, %ecx
+; X64-BMI2-NEXT:    blsil %ecx, %edx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB49_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %esi
+; X64-BMI2-NEXT:    orl %edx, %esi
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB49_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %eax
+; X64-BMI2-NEXT:    testl %eax, %edx
+; X64-BMI2-NEXT:    je .LBB49_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movzwl (%rdi,%rcx,2), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB49_3:
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %sub = sub nsw i32 0, %conv
+  %and = and i32 %conv, %sub
+  %conv2 = trunc i32 %and to i16
+  %0 = atomicrmw or ptr %v, i16 %conv2 monotonic, align 2
+  %conv3 = zext i16 %0 to i32
+  %and8 = and i32 %and, %conv3
+  %tobool.not = icmp eq i32 %and8, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %idxprom
+  %1 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %1, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_or_16_gpr_brz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_or_16_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB50_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    orl %esi, %edi
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB50_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %edi
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:    testl %edi, %esi
+; X86-NOBMI2-NEXT:    jne .LBB50_4
+; X86-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X86-NOBMI2-NEXT:    movzwl %cx, %eax
+; X86-NOBMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-NOBMI2-NEXT:  .LBB50_4: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_or_16_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %edx, %eax, %esi
+; X86-BMI2-NEXT:    movzwl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB50_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    orl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%ecx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB50_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %edi
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:    testl %edi, %esi
+; X86-BMI2-NEXT:    jne .LBB50_4
+; X86-BMI2-NEXT:  # %bb.3: # %if.then
+; X86-BMI2-NEXT:    movzwl %dx, %eax
+; X86-BMI2-NEXT:    movzwl (%ecx,%eax,2), %eax
+; X86-BMI2-NEXT:  .LBB50_4: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_or_16_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB50_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    orl %edx, %esi
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB50_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %esi
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    testl %esi, %edx
+; X64-NOBMI2-NEXT:    je .LBB50_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB50_3: # %if.then
+; X64-NOBMI2-NEXT:    movzwl %cx, %eax
+; X64-NOBMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_or_16_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB50_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB50_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %edx
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    testl %edx, %ecx
+; X64-BMI2-NEXT:    je .LBB50_3
+; X64-BMI2-NEXT:  # %bb.4: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB50_3: # %if.then
+; X64-BMI2-NEXT:    movzwl %si, %eax
+; X64-BMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %shl = shl nuw i32 1, %conv
+  %conv1 = trunc i32 %shl to i16
+  %0 = atomicrmw or ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %0 to i32
+  %and = and i32 %shl, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %idxprom
+  %1 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %1, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_mask0_or_16_gpr_brz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_or_16_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ebx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl %ebx, %ecx
+; X86-NOBMI2-NEXT:    andb $15, %cl
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB51_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    orl %esi, %ecx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %cx, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB51_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %ecx
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:    btl %ebx, %ecx
+; X86-NOBMI2-NEXT:    jb .LBB51_4
+; X86-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X86-NOBMI2-NEXT:    movzwl %bx, %eax
+; X86-NOBMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-NOBMI2-NEXT:  .LBB51_4: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_or_16_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl %edx, %eax
+; X86-BMI2-NEXT:    andb $15, %al
+; X86-BMI2-NEXT:    movl $1, %esi
+; X86-BMI2-NEXT:    shlxl %eax, %esi, %esi
+; X86-BMI2-NEXT:    movzwl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB51_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    orl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%ecx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB51_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %esi
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:    btl %edx, %esi
+; X86-BMI2-NEXT:    jb .LBB51_4
+; X86-BMI2-NEXT:  # %bb.3: # %if.then
+; X86-BMI2-NEXT:    movzwl %dx, %eax
+; X86-BMI2-NEXT:    movzwl (%ecx,%eax,2), %eax
+; X86-BMI2-NEXT:  .LBB51_4: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_or_16_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andb $15, %cl
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB51_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    orl %edx, %ecx
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB51_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %ecx
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    btl %esi, %ecx
+; X64-NOBMI2-NEXT:    jae .LBB51_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB51_3: # %if.then
+; X64-NOBMI2-NEXT:    movzwl %si, %eax
+; X64-NOBMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_or_16_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andb $15, %al
+; X64-BMI2-NEXT:    movl $1, %ecx
+; X64-BMI2-NEXT:    shlxl %eax, %ecx, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB51_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB51_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %ecx
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    btl %esi, %ecx
+; X64-BMI2-NEXT:    jae .LBB51_3
+; X64-BMI2-NEXT:  # %bb.4: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB51_3: # %if.then
+; X64-BMI2-NEXT:    movzwl %si, %eax
+; X64-BMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i16 %c, 15
+  %shl = shl nuw i16 1, %0
+  %1 = atomicrmw or ptr %v, i16 %shl monotonic, align 2
+  %conv2 = zext i16 %1 to i32
+  %conv3 = zext i16 %c to i32
+  %shl4 = shl nuw i32 1, %conv3
+  %and = and i32 %shl4, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %conv = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %conv
+  %2 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %2, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_mask1_or_16_gpr_brz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_or_16_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB52_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    orl %esi, %edi
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB52_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %esi
+; X86-NOBMI2-NEXT:    movl %ecx, %edi
+; X86-NOBMI2-NEXT:    andl $15, %edi
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:    btl %edi, %esi
+; X86-NOBMI2-NEXT:    jb .LBB52_4
+; X86-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X86-NOBMI2-NEXT:    movzwl %cx, %eax
+; X86-NOBMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-NOBMI2-NEXT:  .LBB52_4: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_or_16_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %edx, %eax, %esi
+; X86-BMI2-NEXT:    movzwl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB52_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    orl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%ecx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB52_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %esi
+; X86-BMI2-NEXT:    movl %edx, %edi
+; X86-BMI2-NEXT:    andl $15, %edi
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:    btl %edi, %esi
+; X86-BMI2-NEXT:    jb .LBB52_4
+; X86-BMI2-NEXT:  # %bb.3: # %if.then
+; X86-BMI2-NEXT:    movzwl %dx, %eax
+; X86-BMI2-NEXT:    movzwl (%ecx,%eax,2), %eax
+; X86-BMI2-NEXT:  .LBB52_4: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_or_16_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB52_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    orl %edx, %esi
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB52_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %edx
+; X64-NOBMI2-NEXT:    movl %ecx, %esi
+; X64-NOBMI2-NEXT:    andl $15, %esi
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    btl %esi, %edx
+; X64-NOBMI2-NEXT:    jae .LBB52_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB52_3: # %if.then
+; X64-NOBMI2-NEXT:    movzwl %cx, %eax
+; X64-NOBMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_or_16_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB52_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB52_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %ecx
+; X64-BMI2-NEXT:    movl %esi, %edx
+; X64-BMI2-NEXT:    andl $15, %edx
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    btl %edx, %ecx
+; X64-BMI2-NEXT:    jae .LBB52_3
+; X64-BMI2-NEXT:  # %bb.4: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB52_3: # %if.then
+; X64-BMI2-NEXT:    movzwl %si, %eax
+; X64-BMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %shl = shl nuw i32 1, %conv
+  %conv1 = trunc i32 %shl to i16
+  %0 = atomicrmw or ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %0 to i32
+  %1 = and i16 %c, 15
+  %sh_prom = zext i16 %1 to i32
+  %shl4 = shl nuw nsw i32 1, %sh_prom
+  %and = and i32 %shl4, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %conv3 = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %conv3
+  %2 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %2, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_mask01_or_16_gpr_brz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_or_16_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ebx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl %ebx, %ecx
+; X86-NOBMI2-NEXT:    andb $15, %cl
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB53_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    orl %esi, %ecx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %cx, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB53_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %ecx
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:    testl %ecx, %esi
+; X86-NOBMI2-NEXT:    jne .LBB53_4
+; X86-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X86-NOBMI2-NEXT:    movzwl %bx, %eax
+; X86-NOBMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-NOBMI2-NEXT:  .LBB53_4: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_or_16_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl %edx, %eax
+; X86-BMI2-NEXT:    andb $15, %al
+; X86-BMI2-NEXT:    movl $1, %esi
+; X86-BMI2-NEXT:    shlxl %eax, %esi, %esi
+; X86-BMI2-NEXT:    movzwl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB53_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    orl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%ecx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB53_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %edi
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:    testl %edi, %esi
+; X86-BMI2-NEXT:    jne .LBB53_4
+; X86-BMI2-NEXT:  # %bb.3: # %if.then
+; X86-BMI2-NEXT:    movzwl %dx, %eax
+; X86-BMI2-NEXT:    movzwl (%ecx,%eax,2), %eax
+; X86-BMI2-NEXT:  .LBB53_4: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_or_16_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andb $15, %cl
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB53_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    orl %edx, %ecx
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB53_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %ecx
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    testl %ecx, %edx
+; X64-NOBMI2-NEXT:    je .LBB53_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB53_3: # %if.then
+; X64-NOBMI2-NEXT:    movzwl %si, %eax
+; X64-NOBMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_or_16_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andb $15, %al
+; X64-BMI2-NEXT:    movl $1, %ecx
+; X64-BMI2-NEXT:    shlxl %eax, %ecx, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB53_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB53_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %edx
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    testl %edx, %ecx
+; X64-BMI2-NEXT:    je .LBB53_3
+; X64-BMI2-NEXT:  # %bb.4: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB53_3: # %if.then
+; X64-BMI2-NEXT:    movzwl %si, %eax
+; X64-BMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i16 %c, 15
+  %sh_prom = zext i16 %0 to i32
+  %shl = shl nuw nsw i32 1, %sh_prom
+  %conv1 = trunc i32 %shl to i16
+  %1 = atomicrmw or ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %1 to i32
+  %and = and i32 %shl, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %conv = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %conv
+  %2 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %2, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_blsi_or_16_gpr_brz(ptr %v, i16 %c) {
+; X86-BMI2-LABEL: atomic_blsi_or_16_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    blsil %ecx, %esi
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB54_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    orl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB54_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %edi
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:    testl %edi, %esi
+; X86-BMI2-NEXT:    jne .LBB54_4
+; X86-BMI2-NEXT:  # %bb.3: # %if.then
+; X86-BMI2-NEXT:    movzwl %cx, %eax
+; X86-BMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-BMI2-NEXT:  .LBB54_4: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_or_16_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movzwl %si, %ecx
+; X64-BMI2-NEXT:    blsil %ecx, %edx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB54_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %esi
+; X64-BMI2-NEXT:    orl %edx, %esi
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB54_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %esi
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    testl %esi, %edx
+; X64-BMI2-NEXT:    je .LBB54_3
+; X64-BMI2-NEXT:  # %bb.4: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB54_3: # %if.then
+; X64-BMI2-NEXT:    movzwl (%rdi,%rcx,2), %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %sub = sub nsw i32 0, %conv
+  %and = and i32 %conv, %sub
+  %conv2 = trunc i32 %and to i16
+  %0 = atomicrmw or ptr %v, i16 %conv2 monotonic, align 2
+  %conv3 = zext i16 %0 to i32
+  %and8 = and i32 %and, %conv3
+  %tobool.not = icmp eq i32 %and8, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %idxprom
+  %1 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %1, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_or_16_gpr_brnz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_or_16_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB55_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    orl %esi, %edi
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB55_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %eax
+; X86-NOBMI2-NEXT:    testl %eax, %esi
+; X86-NOBMI2-NEXT:    je .LBB55_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movzwl %cx, %eax
+; X86-NOBMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-NOBMI2-NEXT:    jmp .LBB55_5
+; X86-NOBMI2-NEXT:  .LBB55_3:
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:  .LBB55_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_or_16_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %edx, %eax, %esi
+; X86-BMI2-NEXT:    movzwl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB55_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    orl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%ecx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB55_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %eax
+; X86-BMI2-NEXT:    testl %eax, %esi
+; X86-BMI2-NEXT:    je .LBB55_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movzwl %dx, %eax
+; X86-BMI2-NEXT:    movzwl (%ecx,%eax,2), %eax
+; X86-BMI2-NEXT:    jmp .LBB55_5
+; X86-BMI2-NEXT:  .LBB55_3:
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:  .LBB55_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_or_16_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB55_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    orl %edx, %esi
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB55_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %eax
+; X64-NOBMI2-NEXT:    testl %eax, %edx
+; X64-NOBMI2-NEXT:    je .LBB55_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movzwl %cx, %eax
+; X64-NOBMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB55_3:
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_or_16_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB55_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB55_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %eax
+; X64-BMI2-NEXT:    testl %eax, %ecx
+; X64-BMI2-NEXT:    je .LBB55_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movzwl %si, %eax
+; X64-BMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB55_3:
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %shl = shl nuw i32 1, %conv
+  %conv1 = trunc i32 %shl to i16
+  %0 = atomicrmw or ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %0 to i32
+  %and = and i32 %shl, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %idxprom
+  %1 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %1, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_mask0_or_16_gpr_brnz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_or_16_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ebx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl %ebx, %ecx
+; X86-NOBMI2-NEXT:    andb $15, %cl
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB56_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    orl %esi, %ecx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %cx, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB56_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %eax
+; X86-NOBMI2-NEXT:    btl %ebx, %eax
+; X86-NOBMI2-NEXT:    jae .LBB56_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movzwl %bx, %eax
+; X86-NOBMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-NOBMI2-NEXT:    jmp .LBB56_5
+; X86-NOBMI2-NEXT:  .LBB56_3:
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:  .LBB56_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_or_16_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl %edx, %eax
+; X86-BMI2-NEXT:    andb $15, %al
+; X86-BMI2-NEXT:    movl $1, %esi
+; X86-BMI2-NEXT:    shlxl %eax, %esi, %esi
+; X86-BMI2-NEXT:    movzwl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB56_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    orl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%ecx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB56_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %eax
+; X86-BMI2-NEXT:    btl %edx, %eax
+; X86-BMI2-NEXT:    jae .LBB56_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movzwl %dx, %eax
+; X86-BMI2-NEXT:    movzwl (%ecx,%eax,2), %eax
+; X86-BMI2-NEXT:    jmp .LBB56_5
+; X86-BMI2-NEXT:  .LBB56_3:
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:  .LBB56_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_or_16_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andb $15, %cl
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB56_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    orl %edx, %ecx
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB56_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %eax
+; X64-NOBMI2-NEXT:    btl %esi, %eax
+; X64-NOBMI2-NEXT:    jae .LBB56_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movzwl %si, %eax
+; X64-NOBMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB56_3:
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_or_16_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andb $15, %al
+; X64-BMI2-NEXT:    movl $1, %ecx
+; X64-BMI2-NEXT:    shlxl %eax, %ecx, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB56_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB56_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %eax
+; X64-BMI2-NEXT:    btl %esi, %eax
+; X64-BMI2-NEXT:    jae .LBB56_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movzwl %si, %eax
+; X64-BMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB56_3:
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i16 %c, 15
+  %shl = shl nuw i16 1, %0
+  %1 = atomicrmw or ptr %v, i16 %shl monotonic, align 2
+  %conv2 = zext i16 %1 to i32
+  %conv3 = zext i16 %c to i32
+  %shl4 = shl nuw i32 1, %conv3
+  %and = and i32 %shl4, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %conv = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %conv
+  %2 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %2, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_mask1_or_16_gpr_brnz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_or_16_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB57_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    orl %esi, %edi
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB57_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %eax
+; X86-NOBMI2-NEXT:    movl %ecx, %esi
+; X86-NOBMI2-NEXT:    andl $15, %esi
+; X86-NOBMI2-NEXT:    btl %esi, %eax
+; X86-NOBMI2-NEXT:    jae .LBB57_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movzwl %cx, %eax
+; X86-NOBMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-NOBMI2-NEXT:    jmp .LBB57_5
+; X86-NOBMI2-NEXT:  .LBB57_3:
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:  .LBB57_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_or_16_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %edx, %eax, %esi
+; X86-BMI2-NEXT:    movzwl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB57_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    orl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%ecx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB57_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %eax
+; X86-BMI2-NEXT:    movl %edx, %esi
+; X86-BMI2-NEXT:    andl $15, %esi
+; X86-BMI2-NEXT:    btl %esi, %eax
+; X86-BMI2-NEXT:    jae .LBB57_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movzwl %dx, %eax
+; X86-BMI2-NEXT:    movzwl (%ecx,%eax,2), %eax
+; X86-BMI2-NEXT:    jmp .LBB57_5
+; X86-BMI2-NEXT:  .LBB57_3:
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:  .LBB57_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_or_16_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB57_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    orl %edx, %esi
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB57_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %eax
+; X64-NOBMI2-NEXT:    movl %ecx, %edx
+; X64-NOBMI2-NEXT:    andl $15, %edx
+; X64-NOBMI2-NEXT:    btl %edx, %eax
+; X64-NOBMI2-NEXT:    jae .LBB57_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movzwl %cx, %eax
+; X64-NOBMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB57_3:
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_or_16_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB57_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB57_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %eax
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    andl $15, %ecx
+; X64-BMI2-NEXT:    btl %ecx, %eax
+; X64-BMI2-NEXT:    jae .LBB57_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movzwl %si, %eax
+; X64-BMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB57_3:
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %shl = shl nuw i32 1, %conv
+  %conv1 = trunc i32 %shl to i16
+  %0 = atomicrmw or ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %0 to i32
+  %1 = and i16 %c, 15
+  %sh_prom = zext i16 %1 to i32
+  %shl4 = shl nuw nsw i32 1, %sh_prom
+  %and = and i32 %shl4, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %conv3 = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %conv3
+  %2 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %2, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_mask01_or_16_gpr_brnz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_or_16_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ebx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl %ebx, %ecx
+; X86-NOBMI2-NEXT:    andb $15, %cl
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB58_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    orl %esi, %ecx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %cx, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB58_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %eax
+; X86-NOBMI2-NEXT:    testl %eax, %esi
+; X86-NOBMI2-NEXT:    je .LBB58_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movzwl %bx, %eax
+; X86-NOBMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-NOBMI2-NEXT:    jmp .LBB58_5
+; X86-NOBMI2-NEXT:  .LBB58_3:
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:  .LBB58_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_or_16_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl %edx, %eax
+; X86-BMI2-NEXT:    andb $15, %al
+; X86-BMI2-NEXT:    movl $1, %esi
+; X86-BMI2-NEXT:    shlxl %eax, %esi, %esi
+; X86-BMI2-NEXT:    movzwl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB58_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    orl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%ecx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB58_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %eax
+; X86-BMI2-NEXT:    testl %eax, %esi
+; X86-BMI2-NEXT:    je .LBB58_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movzwl %dx, %eax
+; X86-BMI2-NEXT:    movzwl (%ecx,%eax,2), %eax
+; X86-BMI2-NEXT:    jmp .LBB58_5
+; X86-BMI2-NEXT:  .LBB58_3:
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:  .LBB58_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_or_16_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andb $15, %cl
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB58_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    orl %edx, %ecx
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB58_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %eax
+; X64-NOBMI2-NEXT:    testl %eax, %edx
+; X64-NOBMI2-NEXT:    je .LBB58_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movzwl %si, %eax
+; X64-NOBMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB58_3:
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_or_16_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andb $15, %al
+; X64-BMI2-NEXT:    movl $1, %ecx
+; X64-BMI2-NEXT:    shlxl %eax, %ecx, %ecx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB58_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %dx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB58_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %eax
+; X64-BMI2-NEXT:    testl %eax, %ecx
+; X64-BMI2-NEXT:    je .LBB58_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movzwl %si, %eax
+; X64-BMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB58_3:
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i16 %c, 15
+  %sh_prom = zext i16 %0 to i32
+  %shl = shl nuw nsw i32 1, %sh_prom
+  %conv1 = trunc i32 %shl to i16
+  %1 = atomicrmw or ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %1 to i32
+  %and = and i32 %shl, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %conv = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %conv
+  %2 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %2, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_blsi_or_16_gpr_brnz(ptr %v, i16 %c) {
+; X86-BMI2-LABEL: atomic_blsi_or_16_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    blsil %ecx, %esi
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB59_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    orl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB59_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %eax
+; X86-BMI2-NEXT:    testl %eax, %esi
+; X86-BMI2-NEXT:    je .LBB59_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movzwl %cx, %eax
+; X86-BMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-BMI2-NEXT:    jmp .LBB59_5
+; X86-BMI2-NEXT:  .LBB59_3:
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:  .LBB59_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_or_16_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movzwl %si, %ecx
+; X64-BMI2-NEXT:    blsil %ecx, %edx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB59_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %esi
+; X64-BMI2-NEXT:    orl %edx, %esi
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB59_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %eax
+; X64-BMI2-NEXT:    testl %eax, %edx
+; X64-BMI2-NEXT:    je .LBB59_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movzwl (%rdi,%rcx,2), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB59_3:
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %sub = sub nsw i32 0, %conv
+  %and = and i32 %conv, %sub
+  %conv2 = trunc i32 %and to i16
+  %0 = atomicrmw or ptr %v, i16 %conv2 monotonic, align 2
+  %conv3 = zext i16 %0 to i32
+  %and8 = and i32 %and, %conv3
+  %tobool.not = icmp eq i32 %and8, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %idxprom
+  %1 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %1, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_and_16_gpr_val(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_and_16_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl $1, %edx
+; X86-NOBMI2-NEXT:    shll %cl, %edx
+; X86-NOBMI2-NEXT:    movl $-2, %edi
+; X86-NOBMI2-NEXT:    roll %cl, %edi
+; X86-NOBMI2-NEXT:    movzwl (%esi), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB60_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    andl %edi, %ecx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %cx, (%esi)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB60_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edx, %eax
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_and_16_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %edx
+; X86-BMI2-NEXT:    movl $-2, %edi
+; X86-BMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-BMI2-NEXT:    roll %cl, %edi
+; X86-BMI2-NEXT:    movzwl (%esi), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB60_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ecx
+; X86-BMI2-NEXT:    andl %edi, %ecx
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %cx, (%esi)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB60_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %edx, %eax
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_and_16_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl $-2, %esi
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    roll %cl, %esi
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB60_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    andl %esi, %ecx
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB60_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    andl %edx, %eax
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_and_16_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %edx
+; X64-BMI2-NEXT:    movl $-2, %esi
+; X64-BMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-BMI2-NEXT:    roll %cl, %esi
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB60_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    andl %esi, %ecx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB60_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    andl %edx, %eax
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %shl = shl nuw i32 1, %conv
+  %0 = trunc i32 %shl to i16
+  %conv1 = xor i16 %0, -1
+  %1 = atomicrmw and ptr %v, i16 %conv1 monotonic, align 2
+  %conv5 = and i16 %1, %0
+  ret i16 %conv5
+}
+
+define i16 @atomic_shl1_mask0_and_16_gpr_val(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_and_16_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movw $-2, %si
+; X86-NOBMI2-NEXT:    rolw %cl, %si
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB61_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    andl %esi, %edi
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB61_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl $1, %edx
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $cx
+; X86-NOBMI2-NEXT:    shll %cl, %edx
+; X86-NOBMI2-NEXT:    andl %edx, %eax
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_and_16_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movw $-2, %si
+; X86-BMI2-NEXT:    rolw %cl, %si
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB61_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    andl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB61_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl $1, %edx
+; X86-BMI2-NEXT:    shlxl %ecx, %edx, %ecx
+; X86-BMI2-NEXT:    andl %ecx, %eax
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_and_16_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movw $-2, %dx
+; X64-NOBMI2-NEXT:    rolw %cl, %dx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB61_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    andl %edx, %esi
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB61_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    andl %edx, %eax
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_and_16_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    movw $-2, %dx
+; X64-BMI2-NEXT:    rolw %cl, %dx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB61_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %esi
+; X64-BMI2-NEXT:    andl %edx, %esi
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB61_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movl $1, %edx
+; X64-BMI2-NEXT:    shlxl %ecx, %edx, %ecx
+; X64-BMI2-NEXT:    andl %ecx, %eax
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i16 %c, 15
+  %shl = shl nuw i16 1, %0
+  %not = xor i16 %shl, -1
+  %1 = atomicrmw and ptr %v, i16 %not monotonic, align 2
+  %conv3 = zext i16 %c to i32
+  %shl4 = shl nuw i32 1, %conv3
+  %2 = trunc i32 %shl4 to i16
+  %conv5 = and i16 %1, %2
+  ret i16 %conv5
+}
+
+define i16 @atomic_shl1_mask1_and_16_gpr_val(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_and_16_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $-2, %esi
+; X86-NOBMI2-NEXT:    roll %cl, %esi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB62_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    andl %esi, %edi
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB62_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andb $15, %cl
+; X86-NOBMI2-NEXT:    movl $1, %edx
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $cx
+; X86-NOBMI2-NEXT:    shll %cl, %edx
+; X86-NOBMI2-NEXT:    andl %edx, %eax
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_and_16_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $-2, %esi
+; X86-BMI2-NEXT:    roll %cl, %esi
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB62_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    andl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB62_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andb $15, %cl
+; X86-BMI2-NEXT:    movl $1, %edx
+; X86-BMI2-NEXT:    shlxl %ecx, %edx, %ecx
+; X86-BMI2-NEXT:    andl %ecx, %eax
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_and_16_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $-2, %edx
+; X64-NOBMI2-NEXT:    roll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB62_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    andl %edx, %esi
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB62_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    andb $15, %cl
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    andl %edx, %eax
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_and_16_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    movl $-2, %edx
+; X64-BMI2-NEXT:    roll %cl, %edx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB62_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %esi
+; X64-BMI2-NEXT:    andl %edx, %esi
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB62_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    andb $15, %cl
+; X64-BMI2-NEXT:    movl $1, %edx
+; X64-BMI2-NEXT:    shlxl %ecx, %edx, %ecx
+; X64-BMI2-NEXT:    andl %ecx, %eax
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %shl = shl nuw i32 1, %conv
+  %0 = trunc i32 %shl to i16
+  %conv1 = xor i16 %0, -1
+  %1 = atomicrmw and ptr %v, i16 %conv1 monotonic, align 2
+  %2 = and i16 %c, 15
+  %shl4 = shl nuw i16 1, %2
+  %and = and i16 %1, %shl4
+  ret i16 %and
+}
+
+define i16 @atomic_shl1_mask01_and_16_gpr_val(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_and_16_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $15, %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    lock btrw %cx, (%edx)
+; X86-NOBMI2-NEXT:    setb %al
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    shll %cl, %eax
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_and_16_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    andl $15, %ecx
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    lock btrw %cx, (%eax)
+; X86-BMI2-NEXT:    setb %dl
+; X86-BMI2-NEXT:    shlxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_and_16_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andl $15, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btrw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %eax
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_and_16_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $15, %esi
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btrw %si, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %eax
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i16 %c, 15
+  %shl = shl nuw i16 1, %0
+  %conv1 = xor i16 %shl, -1
+  %1 = atomicrmw and ptr %v, i16 %conv1 monotonic, align 2
+  %conv7 = and i16 %1, %shl
+  ret i16 %conv7
+}
+
+define i16 @atomic_blsi_and_16_gpr_val(ptr %v, i16 %c) {
+; X86-BMI2-LABEL: atomic_blsi_and_16_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    blsil %eax, %ecx
+; X86-BMI2-NEXT:    movl %ecx, %esi
+; X86-BMI2-NEXT:    notl %esi
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB64_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    andl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB64_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ecx, %eax
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_and_16_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    blsil %esi, %ecx
+; X64-BMI2-NEXT:    movl %ecx, %edx
+; X64-BMI2-NEXT:    notl %edx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB64_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %esi
+; X64-BMI2-NEXT:    andl %edx, %esi
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB64_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    andl %ecx, %eax
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %sub = sub i16 0, %c
+  %and = and i16 %sub, %c
+  %conv2 = xor i16 %and, -1
+  %0 = atomicrmw and ptr %v, i16 %conv2 monotonic, align 2
+  %conv9 = and i16 %0, %and
+  ret i16 %conv9
+}
+
+define i16 @atomic_shl1_and_16_gpr_valz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_and_16_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl $1, %edx
+; X86-NOBMI2-NEXT:    shll %cl, %edx
+; X86-NOBMI2-NEXT:    movl $-2, %edi
+; X86-NOBMI2-NEXT:    roll %cl, %edi
+; X86-NOBMI2-NEXT:    movzwl (%esi), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB65_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    andl %edi, %ecx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %cx, (%esi)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB65_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    testl %ecx, %edx
+; X86-NOBMI2-NEXT:    sete %al
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_and_16_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %esi
+; X86-BMI2-NEXT:    movl $-2, %edi
+; X86-BMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-BMI2-NEXT:    roll %cl, %edi
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB65_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ecx
+; X86-BMI2-NEXT:    andl %edi, %ecx
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %cx, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB65_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %ecx
+; X86-BMI2-NEXT:    xorl %eax, %eax
+; X86-BMI2-NEXT:    testl %ecx, %esi
+; X86-BMI2-NEXT:    sete %al
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_and_16_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl $-2, %esi
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    roll %cl, %esi
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB65_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    andl %esi, %ecx
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB65_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    testl %ecx, %edx
+; X64-NOBMI2-NEXT:    sete %al
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_and_16_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %edx
+; X64-BMI2-NEXT:    movl $-2, %esi
+; X64-BMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-BMI2-NEXT:    roll %cl, %esi
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB65_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    andl %esi, %ecx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB65_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %ecx
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    testl %ecx, %edx
+; X64-BMI2-NEXT:    sete %al
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %shl = shl nuw i32 1, %conv
+  %0 = trunc i32 %shl to i16
+  %conv1 = xor i16 %0, -1
+  %1 = atomicrmw and ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %1 to i32
+  %and = and i32 %shl, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  %conv5 = zext i1 %tobool.not to i16
+  ret i16 %conv5
+}
+
+define i16 @atomic_shl1_mask0_and_16_gpr_valz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_and_16_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movw $-2, %si
+; X86-NOBMI2-NEXT:    rolw %cl, %si
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB66_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    andl %esi, %edi
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB66_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %edx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    btl %ecx, %edx
+; X86-NOBMI2-NEXT:    setae %al
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_and_16_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movw $-2, %si
+; X86-BMI2-NEXT:    rolw %cl, %si
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB66_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    andl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB66_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %edx
+; X86-BMI2-NEXT:    xorl %eax, %eax
+; X86-BMI2-NEXT:    btl %ecx, %edx
+; X86-BMI2-NEXT:    setae %al
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_and_16_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movw $-2, %dx
+; X64-NOBMI2-NEXT:    rolw %cl, %dx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB66_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    andl %edx, %esi
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB66_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %edx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    btl %ecx, %edx
+; X64-NOBMI2-NEXT:    setae %al
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_and_16_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    movw $-2, %dx
+; X64-BMI2-NEXT:    rolw %cl, %dx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB66_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %esi
+; X64-BMI2-NEXT:    andl %edx, %esi
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB66_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %edx
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    btl %ecx, %edx
+; X64-BMI2-NEXT:    setae %al
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i16 %c, 15
+  %shl = shl nuw i16 1, %0
+  %not = xor i16 %shl, -1
+  %1 = atomicrmw and ptr %v, i16 %not monotonic, align 2
+  %conv2 = zext i16 %1 to i32
+  %conv3 = zext i16 %c to i32
+  %shl4 = shl nuw i32 1, %conv3
+  %and = and i32 %shl4, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  %conv5 = zext i1 %tobool.not to i16
+  ret i16 %conv5
+}
+
+define i16 @atomic_shl1_mask1_and_16_gpr_valz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_and_16_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $-2, %esi
+; X86-NOBMI2-NEXT:    roll %cl, %esi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB67_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    andl %esi, %edi
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB67_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %edx
+; X86-NOBMI2-NEXT:    andl $15, %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    btl %ecx, %edx
+; X86-NOBMI2-NEXT:    setae %al
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_and_16_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $-2, %esi
+; X86-BMI2-NEXT:    roll %cl, %esi
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB67_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    andl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB67_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %edx
+; X86-BMI2-NEXT:    andl $15, %ecx
+; X86-BMI2-NEXT:    xorl %eax, %eax
+; X86-BMI2-NEXT:    btl %ecx, %edx
+; X86-BMI2-NEXT:    setae %al
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_and_16_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $-2, %edx
+; X64-NOBMI2-NEXT:    roll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB67_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    andl %edx, %esi
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB67_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %edx
+; X64-NOBMI2-NEXT:    andl $15, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    btl %ecx, %edx
+; X64-NOBMI2-NEXT:    setae %al
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_and_16_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    movl $-2, %edx
+; X64-BMI2-NEXT:    roll %cl, %edx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB67_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %esi
+; X64-BMI2-NEXT:    andl %edx, %esi
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB67_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %edx
+; X64-BMI2-NEXT:    andl $15, %ecx
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    btl %ecx, %edx
+; X64-BMI2-NEXT:    setae %al
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %shl = shl nuw i32 1, %conv
+  %0 = trunc i32 %shl to i16
+  %conv1 = xor i16 %0, -1
+  %1 = atomicrmw and ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %1 to i32
+  %2 = and i16 %c, 15
+  %sh_prom = zext i16 %2 to i32
+  %shl4 = shl nuw nsw i32 1, %sh_prom
+  %and = and i32 %shl4, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  %conv5 = zext i1 %tobool.not to i16
+  ret i16 %conv5
+}
+
+define i16 @atomic_shl1_mask01_and_16_gpr_valz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_and_16_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andb $15, %cl
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl $-2, %edi
+; X86-NOBMI2-NEXT:    roll %cl, %edi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB68_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    andl %edi, %ecx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %cx, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB68_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    testl %ecx, %esi
+; X86-NOBMI2-NEXT:    sete %al
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_and_16_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    andb $15, %cl
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %esi
+; X86-BMI2-NEXT:    movl $-2, %edi
+; X86-BMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-BMI2-NEXT:    roll %cl, %edi
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB68_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ecx
+; X86-BMI2-NEXT:    andl %edi, %ecx
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %cx, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB68_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %ecx
+; X86-BMI2-NEXT:    xorl %eax, %eax
+; X86-BMI2-NEXT:    testl %ecx, %esi
+; X86-BMI2-NEXT:    sete %al
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_and_16_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andb $15, %cl
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl $-2, %esi
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    roll %cl, %esi
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB68_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    andl %esi, %ecx
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB68_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    testl %ecx, %edx
+; X64-NOBMI2-NEXT:    sete %al
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_and_16_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    andb $15, %cl
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %ecx, %eax, %edx
+; X64-BMI2-NEXT:    movl $-2, %esi
+; X64-BMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-BMI2-NEXT:    roll %cl, %esi
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB68_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    andl %esi, %ecx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB68_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %ecx
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    testl %ecx, %edx
+; X64-BMI2-NEXT:    sete %al
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i16 %c, 15
+  %sh_prom = zext i16 %0 to i32
+  %shl = shl nuw nsw i32 1, %sh_prom
+  %1 = trunc i32 %shl to i16
+  %conv1 = xor i16 %1, -1
+  %2 = atomicrmw and ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %2 to i32
+  %and = and i32 %shl, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  %conv7 = zext i1 %tobool.not to i16
+  ret i16 %conv7
+}
+
+define i16 @atomic_blsi_and_16_gpr_valz(ptr %v, i16 %c) {
+; X86-BMI2-LABEL: atomic_blsi_and_16_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    blsil %eax, %ecx
+; X86-BMI2-NEXT:    movl %ecx, %esi
+; X86-BMI2-NEXT:    notl %esi
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB69_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    andl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB69_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %edx
+; X86-BMI2-NEXT:    xorl %eax, %eax
+; X86-BMI2-NEXT:    testl %edx, %ecx
+; X86-BMI2-NEXT:    sete %al
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_and_16_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movzwl %si, %eax
+; X64-BMI2-NEXT:    blsil %eax, %ecx
+; X64-BMI2-NEXT:    movl %ecx, %edx
+; X64-BMI2-NEXT:    notl %edx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB69_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %esi
+; X64-BMI2-NEXT:    andl %edx, %esi
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB69_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %edx
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    testl %edx, %ecx
+; X64-BMI2-NEXT:    sete %al
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %sub = sub nsw i32 0, %conv
+  %and = and i32 %conv, %sub
+  %0 = trunc i32 %and to i16
+  %conv2 = xor i16 %0, -1
+  %1 = atomicrmw and ptr %v, i16 %conv2 monotonic, align 2
+  %conv3 = zext i16 %1 to i32
+  %and8 = and i32 %and, %conv3
+  %tobool.not = icmp eq i32 %and8, 0
+  %conv9 = zext i1 %tobool.not to i16
+  ret i16 %conv9
+}
+
+define i16 @atomic_shl1_and_16_gpr_valnz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_and_16_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl $1, %edx
+; X86-NOBMI2-NEXT:    shll %cl, %edx
+; X86-NOBMI2-NEXT:    movl $-2, %edi
+; X86-NOBMI2-NEXT:    roll %cl, %edi
+; X86-NOBMI2-NEXT:    movzwl (%esi), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB70_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    andl %edi, %ecx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %cx, (%esi)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB70_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    testl %ecx, %edx
+; X86-NOBMI2-NEXT:    setne %al
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_and_16_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %esi
+; X86-BMI2-NEXT:    movl $-2, %edi
+; X86-BMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-BMI2-NEXT:    roll %cl, %edi
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB70_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ecx
+; X86-BMI2-NEXT:    andl %edi, %ecx
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %cx, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB70_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %ecx
+; X86-BMI2-NEXT:    xorl %eax, %eax
+; X86-BMI2-NEXT:    testl %ecx, %esi
+; X86-BMI2-NEXT:    setne %al
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_and_16_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl $-2, %esi
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    roll %cl, %esi
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB70_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    andl %esi, %ecx
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB70_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    testl %ecx, %edx
+; X64-NOBMI2-NEXT:    setne %al
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_and_16_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %edx
+; X64-BMI2-NEXT:    movl $-2, %esi
+; X64-BMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-BMI2-NEXT:    roll %cl, %esi
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB70_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    andl %esi, %ecx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB70_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %ecx
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    testl %ecx, %edx
+; X64-BMI2-NEXT:    setne %al
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %shl = shl nuw i32 1, %conv
+  %0 = trunc i32 %shl to i16
+  %conv1 = xor i16 %0, -1
+  %1 = atomicrmw and ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %1 to i32
+  %and = and i32 %shl, %conv2
+  %tobool = icmp ne i32 %and, 0
+  %conv6 = zext i1 %tobool to i16
+  ret i16 %conv6
+}
+
+define i16 @atomic_shl1_mask0_and_16_gpr_valnz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_and_16_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movw $-2, %si
+; X86-NOBMI2-NEXT:    rolw %cl, %si
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB71_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    andl %esi, %edi
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB71_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %edx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    btl %ecx, %edx
+; X86-NOBMI2-NEXT:    setb %al
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_and_16_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movw $-2, %si
+; X86-BMI2-NEXT:    rolw %cl, %si
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB71_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    andl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB71_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %edx
+; X86-BMI2-NEXT:    xorl %eax, %eax
+; X86-BMI2-NEXT:    btl %ecx, %edx
+; X86-BMI2-NEXT:    setb %al
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_and_16_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movw $-2, %dx
+; X64-NOBMI2-NEXT:    rolw %cl, %dx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB71_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    andl %edx, %esi
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB71_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %edx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    btl %ecx, %edx
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_and_16_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    movw $-2, %dx
+; X64-BMI2-NEXT:    rolw %cl, %dx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB71_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %esi
+; X64-BMI2-NEXT:    andl %edx, %esi
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB71_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %edx
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    btl %ecx, %edx
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i16 %c, 15
+  %shl = shl nuw i16 1, %0
+  %not = xor i16 %shl, -1
+  %1 = atomicrmw and ptr %v, i16 %not monotonic, align 2
+  %conv2 = zext i16 %1 to i32
+  %conv3 = zext i16 %c to i32
+  %shl4 = shl nuw i32 1, %conv3
+  %and = and i32 %shl4, %conv2
+  %tobool = icmp ne i32 %and, 0
+  %conv6 = zext i1 %tobool to i16
+  ret i16 %conv6
+}
+
+define i16 @atomic_shl1_mask1_and_16_gpr_valnz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_and_16_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $-2, %esi
+; X86-NOBMI2-NEXT:    roll %cl, %esi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB72_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    andl %esi, %edi
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB72_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %edx
+; X86-NOBMI2-NEXT:    andl $15, %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    btl %ecx, %edx
+; X86-NOBMI2-NEXT:    setb %al
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_and_16_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $-2, %esi
+; X86-BMI2-NEXT:    roll %cl, %esi
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB72_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    andl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB72_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %edx
+; X86-BMI2-NEXT:    andl $15, %ecx
+; X86-BMI2-NEXT:    xorl %eax, %eax
+; X86-BMI2-NEXT:    btl %ecx, %edx
+; X86-BMI2-NEXT:    setb %al
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_and_16_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $-2, %edx
+; X64-NOBMI2-NEXT:    roll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB72_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    andl %edx, %esi
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB72_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %edx
+; X64-NOBMI2-NEXT:    andl $15, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    btl %ecx, %edx
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_and_16_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    movl $-2, %edx
+; X64-BMI2-NEXT:    roll %cl, %edx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB72_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %esi
+; X64-BMI2-NEXT:    andl %edx, %esi
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB72_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %edx
+; X64-BMI2-NEXT:    andl $15, %ecx
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    btl %ecx, %edx
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %shl = shl nuw i32 1, %conv
+  %0 = trunc i32 %shl to i16
+  %conv1 = xor i16 %0, -1
+  %1 = atomicrmw and ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %1 to i32
+  %2 = and i16 %c, 15
+  %sh_prom = zext i16 %2 to i32
+  %shl4 = shl nuw nsw i32 1, %sh_prom
+  %and = and i32 %shl4, %conv2
+  %tobool = icmp ne i32 %and, 0
+  %conv6 = zext i1 %tobool to i16
+  ret i16 %conv6
+}
+
+define i16 @atomic_shl1_mask01_and_16_gpr_valnz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_and_16_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andb $15, %cl
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl $-2, %edi
+; X86-NOBMI2-NEXT:    roll %cl, %edi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB73_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    andl %edi, %ecx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %cx, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB73_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    testl %ecx, %esi
+; X86-NOBMI2-NEXT:    setne %al
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_and_16_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    andb $15, %cl
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %esi
+; X86-BMI2-NEXT:    movl $-2, %edi
+; X86-BMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-BMI2-NEXT:    roll %cl, %edi
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB73_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ecx
+; X86-BMI2-NEXT:    andl %edi, %ecx
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %cx, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB73_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %ecx
+; X86-BMI2-NEXT:    xorl %eax, %eax
+; X86-BMI2-NEXT:    testl %ecx, %esi
+; X86-BMI2-NEXT:    setne %al
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_and_16_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andb $15, %cl
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl $-2, %esi
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    roll %cl, %esi
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB73_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    andl %esi, %ecx
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB73_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    testl %ecx, %edx
+; X64-NOBMI2-NEXT:    setne %al
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_and_16_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    andb $15, %cl
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %ecx, %eax, %edx
+; X64-BMI2-NEXT:    movl $-2, %esi
+; X64-BMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-BMI2-NEXT:    roll %cl, %esi
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB73_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    andl %esi, %ecx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB73_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %ecx
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    testl %ecx, %edx
+; X64-BMI2-NEXT:    setne %al
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i16 %c, 15
+  %sh_prom = zext i16 %0 to i32
+  %shl = shl nuw nsw i32 1, %sh_prom
+  %1 = trunc i32 %shl to i16
+  %conv1 = xor i16 %1, -1
+  %2 = atomicrmw and ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %2 to i32
+  %and = and i32 %shl, %conv2
+  %tobool = icmp ne i32 %and, 0
+  %conv8 = zext i1 %tobool to i16
+  ret i16 %conv8
+}
+
+define i16 @atomic_blsi_and_16_gpr_valnz(ptr %v, i16 %c) {
+; X86-BMI2-LABEL: atomic_blsi_and_16_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    blsil %eax, %ecx
+; X86-BMI2-NEXT:    movl %ecx, %esi
+; X86-BMI2-NEXT:    notl %esi
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB74_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    andl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB74_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %edx
+; X86-BMI2-NEXT:    xorl %eax, %eax
+; X86-BMI2-NEXT:    testl %edx, %ecx
+; X86-BMI2-NEXT:    setne %al
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_and_16_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movzwl %si, %eax
+; X64-BMI2-NEXT:    blsil %eax, %ecx
+; X64-BMI2-NEXT:    movl %ecx, %edx
+; X64-BMI2-NEXT:    notl %edx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB74_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %esi
+; X64-BMI2-NEXT:    andl %edx, %esi
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB74_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %edx
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    testl %edx, %ecx
+; X64-BMI2-NEXT:    setne %al
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %sub = sub nsw i32 0, %conv
+  %and = and i32 %conv, %sub
+  %0 = trunc i32 %and to i16
+  %conv2 = xor i16 %0, -1
+  %1 = atomicrmw and ptr %v, i16 %conv2 monotonic, align 2
+  %conv3 = zext i16 %1 to i32
+  %and8 = and i32 %and, %conv3
+  %tobool = icmp ne i32 %and8, 0
+  %conv10 = zext i1 %tobool to i16
+  ret i16 %conv10
+}
+
+define i16 @atomic_shl1_and_16_gpr_br(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_and_16_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl $-2, %edi
+; X86-NOBMI2-NEXT:    roll %cl, %edi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB75_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %edi, %ebx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %bx, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB75_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %eax
+; X86-NOBMI2-NEXT:    testl %eax, %esi
+; X86-NOBMI2-NEXT:    je .LBB75_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movzwl %cx, %eax
+; X86-NOBMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-NOBMI2-NEXT:    jmp .LBB75_5
+; X86-NOBMI2-NEXT:  .LBB75_3:
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:  .LBB75_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_and_16_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    .cfi_offset %esi, -16
+; X86-BMI2-NEXT:    .cfi_offset %edi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %esi
+; X86-BMI2-NEXT:    movl $-2, %edi
+; X86-BMI2-NEXT:    roll %cl, %edi
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB75_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %edi, %ebx
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %bx, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB75_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %eax
+; X86-BMI2-NEXT:    testl %eax, %esi
+; X86-BMI2-NEXT:    je .LBB75_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movzwl %cx, %eax
+; X86-BMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-BMI2-NEXT:    jmp .LBB75_5
+; X86-BMI2-NEXT:  .LBB75_3:
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:  .LBB75_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_and_16_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl $-2, %esi
+; X64-NOBMI2-NEXT:    roll %cl, %esi
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB75_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %r8d
+; X64-NOBMI2-NEXT:    andl %esi, %r8d
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %r8w, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB75_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %eax
+; X64-NOBMI2-NEXT:    testl %eax, %edx
+; X64-NOBMI2-NEXT:    je .LBB75_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movzwl %cx, %eax
+; X64-NOBMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB75_3:
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_and_16_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %edx
+; X64-BMI2-NEXT:    movl $-2, %esi
+; X64-BMI2-NEXT:    roll %cl, %esi
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB75_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %r8d
+; X64-BMI2-NEXT:    andl %esi, %r8d
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %r8w, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB75_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %eax
+; X64-BMI2-NEXT:    testl %eax, %edx
+; X64-BMI2-NEXT:    je .LBB75_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movzwl %cx, %eax
+; X64-BMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB75_3:
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %shl = shl nuw i32 1, %conv
+  %0 = trunc i32 %shl to i16
+  %conv1 = xor i16 %0, -1
+  %1 = atomicrmw and ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %1 to i32
+  %and = and i32 %shl, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %idxprom
+  %2 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %2, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_mask0_and_16_gpr_br(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_and_16_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movw $-2, %si
+; X86-NOBMI2-NEXT:    rolw %cl, %si
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB76_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    andl %esi, %edi
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB76_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %eax
+; X86-NOBMI2-NEXT:    btl %ecx, %eax
+; X86-NOBMI2-NEXT:    jae .LBB76_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movzwl %cx, %eax
+; X86-NOBMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-NOBMI2-NEXT:    jmp .LBB76_5
+; X86-NOBMI2-NEXT:  .LBB76_3:
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:  .LBB76_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_and_16_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movw $-2, %si
+; X86-BMI2-NEXT:    rolw %cl, %si
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB76_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    andl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB76_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %eax
+; X86-BMI2-NEXT:    btl %ecx, %eax
+; X86-BMI2-NEXT:    jae .LBB76_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movzwl %cx, %eax
+; X86-BMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-BMI2-NEXT:    jmp .LBB76_5
+; X86-BMI2-NEXT:  .LBB76_3:
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:  .LBB76_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_and_16_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movw $-2, %dx
+; X64-NOBMI2-NEXT:    rolw %cl, %dx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB76_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    andl %edx, %esi
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB76_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %eax
+; X64-NOBMI2-NEXT:    btl %ecx, %eax
+; X64-NOBMI2-NEXT:    jae .LBB76_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movzwl %cx, %eax
+; X64-NOBMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB76_3:
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_and_16_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    movw $-2, %dx
+; X64-BMI2-NEXT:    rolw %cl, %dx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB76_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %esi
+; X64-BMI2-NEXT:    andl %edx, %esi
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB76_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %eax
+; X64-BMI2-NEXT:    btl %ecx, %eax
+; X64-BMI2-NEXT:    jae .LBB76_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movzwl %cx, %eax
+; X64-BMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB76_3:
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i16 %c, 15
+  %shl = shl nuw i16 1, %0
+  %not = xor i16 %shl, -1
+  %1 = atomicrmw and ptr %v, i16 %not monotonic, align 2
+  %conv2 = zext i16 %1 to i32
+  %conv3 = zext i16 %c to i32
+  %shl4 = shl nuw i32 1, %conv3
+  %and = and i32 %shl4, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %conv = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %conv
+  %2 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %2, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_mask1_and_16_gpr_br(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_and_16_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $-2, %esi
+; X86-NOBMI2-NEXT:    roll %cl, %esi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB77_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    andl %esi, %edi
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB77_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %eax
+; X86-NOBMI2-NEXT:    movl %ecx, %esi
+; X86-NOBMI2-NEXT:    andl $15, %esi
+; X86-NOBMI2-NEXT:    btl %esi, %eax
+; X86-NOBMI2-NEXT:    jae .LBB77_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movzwl %cx, %eax
+; X86-NOBMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-NOBMI2-NEXT:    jmp .LBB77_5
+; X86-NOBMI2-NEXT:  .LBB77_3:
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:  .LBB77_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_and_16_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $-2, %esi
+; X86-BMI2-NEXT:    roll %cl, %esi
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB77_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    andl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB77_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %eax
+; X86-BMI2-NEXT:    movl %ecx, %esi
+; X86-BMI2-NEXT:    andl $15, %esi
+; X86-BMI2-NEXT:    btl %esi, %eax
+; X86-BMI2-NEXT:    jae .LBB77_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movzwl %cx, %eax
+; X86-BMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-BMI2-NEXT:    jmp .LBB77_5
+; X86-BMI2-NEXT:  .LBB77_3:
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:  .LBB77_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_and_16_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $-2, %edx
+; X64-NOBMI2-NEXT:    roll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB77_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    andl %edx, %esi
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB77_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %eax
+; X64-NOBMI2-NEXT:    movl %ecx, %edx
+; X64-NOBMI2-NEXT:    andl $15, %edx
+; X64-NOBMI2-NEXT:    btl %edx, %eax
+; X64-NOBMI2-NEXT:    jae .LBB77_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movzwl %cx, %eax
+; X64-NOBMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB77_3:
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_and_16_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    movl $-2, %edx
+; X64-BMI2-NEXT:    roll %cl, %edx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB77_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %esi
+; X64-BMI2-NEXT:    andl %edx, %esi
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB77_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %eax
+; X64-BMI2-NEXT:    movl %ecx, %edx
+; X64-BMI2-NEXT:    andl $15, %edx
+; X64-BMI2-NEXT:    btl %edx, %eax
+; X64-BMI2-NEXT:    jae .LBB77_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movzwl %cx, %eax
+; X64-BMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB77_3:
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %shl = shl nuw i32 1, %conv
+  %0 = trunc i32 %shl to i16
+  %conv1 = xor i16 %0, -1
+  %1 = atomicrmw and ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %1 to i32
+  %2 = and i16 %c, 15
+  %sh_prom = zext i16 %2 to i32
+  %shl4 = shl nuw nsw i32 1, %sh_prom
+  %and = and i32 %shl4, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %conv3 = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %conv3
+  %3 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %3, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_mask01_and_16_gpr_br(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_and_16_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ebx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl %ebx, %ecx
+; X86-NOBMI2-NEXT:    andb $15, %cl
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl $-2, %edi
+; X86-NOBMI2-NEXT:    roll %cl, %edi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB78_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    andl %edi, %ecx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %cx, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB78_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %eax
+; X86-NOBMI2-NEXT:    testl %eax, %esi
+; X86-NOBMI2-NEXT:    je .LBB78_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movzwl %bx, %eax
+; X86-NOBMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-NOBMI2-NEXT:    jmp .LBB78_5
+; X86-NOBMI2-NEXT:  .LBB78_3:
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:  .LBB78_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_and_16_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    .cfi_offset %esi, -16
+; X86-BMI2-NEXT:    .cfi_offset %edi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ebx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl %ebx, %ecx
+; X86-BMI2-NEXT:    andb $15, %cl
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %esi
+; X86-BMI2-NEXT:    movl $-2, %edi
+; X86-BMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-BMI2-NEXT:    roll %cl, %edi
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB78_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ecx
+; X86-BMI2-NEXT:    andl %edi, %ecx
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %cx, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB78_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %eax
+; X86-BMI2-NEXT:    testl %eax, %esi
+; X86-BMI2-NEXT:    je .LBB78_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movzwl %bx, %eax
+; X86-BMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-BMI2-NEXT:    jmp .LBB78_5
+; X86-BMI2-NEXT:  .LBB78_3:
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:  .LBB78_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_and_16_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andb $15, %cl
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl $-2, %r8d
+; X64-NOBMI2-NEXT:    roll %cl, %r8d
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB78_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    andl %r8d, %ecx
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB78_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %eax
+; X64-NOBMI2-NEXT:    testl %eax, %edx
+; X64-NOBMI2-NEXT:    je .LBB78_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movzwl %si, %eax
+; X64-NOBMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB78_3:
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_and_16_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    andb $15, %cl
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %ecx, %eax, %edx
+; X64-BMI2-NEXT:    movl $-2, %r8d
+; X64-BMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-BMI2-NEXT:    roll %cl, %r8d
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB78_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    andl %r8d, %ecx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB78_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %eax
+; X64-BMI2-NEXT:    testl %eax, %edx
+; X64-BMI2-NEXT:    je .LBB78_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movzwl %si, %eax
+; X64-BMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB78_3:
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i16 %c, 15
+  %sh_prom = zext i16 %0 to i32
+  %shl = shl nuw nsw i32 1, %sh_prom
+  %1 = trunc i32 %shl to i16
+  %conv1 = xor i16 %1, -1
+  %2 = atomicrmw and ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %2 to i32
+  %and = and i32 %shl, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %conv = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %conv
+  %3 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %3, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_blsi_and_16_gpr_br(ptr %v, i16 %c) {
+; X86-BMI2-LABEL: atomic_blsi_and_16_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    .cfi_offset %esi, -16
+; X86-BMI2-NEXT:    .cfi_offset %edi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    blsil %ecx, %esi
+; X86-BMI2-NEXT:    movl %esi, %edi
+; X86-BMI2-NEXT:    notl %edi
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB79_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %edi, %ebx
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %bx, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB79_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %eax
+; X86-BMI2-NEXT:    testl %eax, %esi
+; X86-BMI2-NEXT:    je .LBB79_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movzwl %cx, %eax
+; X86-BMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-BMI2-NEXT:    jmp .LBB79_5
+; X86-BMI2-NEXT:  .LBB79_3:
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:  .LBB79_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_and_16_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movzwl %si, %ecx
+; X64-BMI2-NEXT:    blsil %ecx, %edx
+; X64-BMI2-NEXT:    movl %edx, %esi
+; X64-BMI2-NEXT:    notl %esi
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB79_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %r8d
+; X64-BMI2-NEXT:    andl %esi, %r8d
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %r8w, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB79_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %eax
+; X64-BMI2-NEXT:    testl %eax, %edx
+; X64-BMI2-NEXT:    je .LBB79_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movzwl (%rdi,%rcx,2), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB79_3:
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %sub = sub nsw i32 0, %conv
+  %and = and i32 %conv, %sub
+  %0 = trunc i32 %and to i16
+  %conv2 = xor i16 %0, -1
+  %1 = atomicrmw and ptr %v, i16 %conv2 monotonic, align 2
+  %conv3 = zext i16 %1 to i32
+  %and8 = and i32 %and, %conv3
+  %tobool.not = icmp eq i32 %and8, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %idxprom
+  %2 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %2, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_and_16_gpr_brz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_and_16_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl $-2, %edi
+; X86-NOBMI2-NEXT:    roll %cl, %edi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB80_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %edi, %ebx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %bx, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB80_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %edi
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:    testl %edi, %esi
+; X86-NOBMI2-NEXT:    jne .LBB80_4
+; X86-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X86-NOBMI2-NEXT:    movzwl %cx, %eax
+; X86-NOBMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-NOBMI2-NEXT:  .LBB80_4: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_and_16_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    .cfi_offset %esi, -16
+; X86-BMI2-NEXT:    .cfi_offset %edi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %esi
+; X86-BMI2-NEXT:    movl $-2, %edi
+; X86-BMI2-NEXT:    roll %cl, %edi
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB80_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %edi, %ebx
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %bx, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB80_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %edi
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:    testl %edi, %esi
+; X86-BMI2-NEXT:    jne .LBB80_4
+; X86-BMI2-NEXT:  # %bb.3: # %if.then
+; X86-BMI2-NEXT:    movzwl %cx, %eax
+; X86-BMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-BMI2-NEXT:  .LBB80_4: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_and_16_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl $-2, %esi
+; X64-NOBMI2-NEXT:    roll %cl, %esi
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB80_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %r8d
+; X64-NOBMI2-NEXT:    andl %esi, %r8d
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %r8w, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB80_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %esi
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    testl %esi, %edx
+; X64-NOBMI2-NEXT:    je .LBB80_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB80_3: # %if.then
+; X64-NOBMI2-NEXT:    movzwl %cx, %eax
+; X64-NOBMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_and_16_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %edx
+; X64-BMI2-NEXT:    movl $-2, %esi
+; X64-BMI2-NEXT:    roll %cl, %esi
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB80_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %r8d
+; X64-BMI2-NEXT:    andl %esi, %r8d
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %r8w, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB80_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %esi
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    testl %esi, %edx
+; X64-BMI2-NEXT:    je .LBB80_3
+; X64-BMI2-NEXT:  # %bb.4: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB80_3: # %if.then
+; X64-BMI2-NEXT:    movzwl %cx, %eax
+; X64-BMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %shl = shl nuw i32 1, %conv
+  %0 = trunc i32 %shl to i16
+  %conv1 = xor i16 %0, -1
+  %1 = atomicrmw and ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %1 to i32
+  %and = and i32 %shl, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %idxprom
+  %2 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %2, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_mask0_and_16_gpr_brz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_and_16_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movw $-2, %si
+; X86-NOBMI2-NEXT:    rolw %cl, %si
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB81_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    andl %esi, %edi
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB81_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %esi
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:    btl %ecx, %esi
+; X86-NOBMI2-NEXT:    jb .LBB81_4
+; X86-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X86-NOBMI2-NEXT:    movzwl %cx, %eax
+; X86-NOBMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-NOBMI2-NEXT:  .LBB81_4: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_and_16_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movw $-2, %si
+; X86-BMI2-NEXT:    rolw %cl, %si
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB81_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    andl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB81_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %esi
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:    btl %ecx, %esi
+; X86-BMI2-NEXT:    jb .LBB81_4
+; X86-BMI2-NEXT:  # %bb.3: # %if.then
+; X86-BMI2-NEXT:    movzwl %cx, %eax
+; X86-BMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-BMI2-NEXT:  .LBB81_4: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_and_16_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movw $-2, %dx
+; X64-NOBMI2-NEXT:    rolw %cl, %dx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB81_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    andl %edx, %esi
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB81_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %edx
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    btl %ecx, %edx
+; X64-NOBMI2-NEXT:    jae .LBB81_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB81_3: # %if.then
+; X64-NOBMI2-NEXT:    movzwl %cx, %eax
+; X64-NOBMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_and_16_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    movw $-2, %dx
+; X64-BMI2-NEXT:    rolw %cl, %dx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB81_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %esi
+; X64-BMI2-NEXT:    andl %edx, %esi
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB81_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %edx
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    btl %ecx, %edx
+; X64-BMI2-NEXT:    jae .LBB81_3
+; X64-BMI2-NEXT:  # %bb.4: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB81_3: # %if.then
+; X64-BMI2-NEXT:    movzwl %cx, %eax
+; X64-BMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i16 %c, 15
+  %shl = shl nuw i16 1, %0
+  %not = xor i16 %shl, -1
+  %1 = atomicrmw and ptr %v, i16 %not monotonic, align 2
+  %conv2 = zext i16 %1 to i32
+  %conv3 = zext i16 %c to i32
+  %shl4 = shl nuw i32 1, %conv3
+  %and = and i32 %shl4, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %conv = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %conv
+  %2 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %2, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_mask1_and_16_gpr_brz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_and_16_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $-2, %esi
+; X86-NOBMI2-NEXT:    roll %cl, %esi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB82_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    andl %esi, %edi
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB82_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %esi
+; X86-NOBMI2-NEXT:    movl %ecx, %edi
+; X86-NOBMI2-NEXT:    andl $15, %edi
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:    btl %edi, %esi
+; X86-NOBMI2-NEXT:    jb .LBB82_4
+; X86-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X86-NOBMI2-NEXT:    movzwl %cx, %eax
+; X86-NOBMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-NOBMI2-NEXT:  .LBB82_4: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_and_16_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $-2, %esi
+; X86-BMI2-NEXT:    roll %cl, %esi
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB82_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    andl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB82_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %esi
+; X86-BMI2-NEXT:    movl %ecx, %edi
+; X86-BMI2-NEXT:    andl $15, %edi
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:    btl %edi, %esi
+; X86-BMI2-NEXT:    jb .LBB82_4
+; X86-BMI2-NEXT:  # %bb.3: # %if.then
+; X86-BMI2-NEXT:    movzwl %cx, %eax
+; X86-BMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-BMI2-NEXT:  .LBB82_4: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_and_16_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $-2, %edx
+; X64-NOBMI2-NEXT:    roll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB82_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    andl %edx, %esi
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB82_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %edx
+; X64-NOBMI2-NEXT:    movl %ecx, %esi
+; X64-NOBMI2-NEXT:    andl $15, %esi
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    btl %esi, %edx
+; X64-NOBMI2-NEXT:    jae .LBB82_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB82_3: # %if.then
+; X64-NOBMI2-NEXT:    movzwl %cx, %eax
+; X64-NOBMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_and_16_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    movl $-2, %edx
+; X64-BMI2-NEXT:    roll %cl, %edx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB82_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %esi
+; X64-BMI2-NEXT:    andl %edx, %esi
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB82_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %edx
+; X64-BMI2-NEXT:    movl %ecx, %esi
+; X64-BMI2-NEXT:    andl $15, %esi
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    btl %esi, %edx
+; X64-BMI2-NEXT:    jae .LBB82_3
+; X64-BMI2-NEXT:  # %bb.4: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB82_3: # %if.then
+; X64-BMI2-NEXT:    movzwl %cx, %eax
+; X64-BMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %shl = shl nuw i32 1, %conv
+  %0 = trunc i32 %shl to i16
+  %conv1 = xor i16 %0, -1
+  %1 = atomicrmw and ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %1 to i32
+  %2 = and i16 %c, 15
+  %sh_prom = zext i16 %2 to i32
+  %shl4 = shl nuw nsw i32 1, %sh_prom
+  %and = and i32 %shl4, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %conv3 = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %conv3
+  %3 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %3, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_mask01_and_16_gpr_brz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_and_16_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ebx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl %ebx, %ecx
+; X86-NOBMI2-NEXT:    andb $15, %cl
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl $-2, %edi
+; X86-NOBMI2-NEXT:    roll %cl, %edi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB83_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    andl %edi, %ecx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %cx, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB83_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %ecx
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:    testl %ecx, %esi
+; X86-NOBMI2-NEXT:    jne .LBB83_4
+; X86-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X86-NOBMI2-NEXT:    movzwl %bx, %eax
+; X86-NOBMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-NOBMI2-NEXT:  .LBB83_4: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_and_16_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    .cfi_offset %esi, -16
+; X86-BMI2-NEXT:    .cfi_offset %edi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ebx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl %ebx, %ecx
+; X86-BMI2-NEXT:    andb $15, %cl
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %esi
+; X86-BMI2-NEXT:    movl $-2, %edi
+; X86-BMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-BMI2-NEXT:    roll %cl, %edi
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB83_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ecx
+; X86-BMI2-NEXT:    andl %edi, %ecx
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %cx, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB83_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %ecx
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:    testl %ecx, %esi
+; X86-BMI2-NEXT:    jne .LBB83_4
+; X86-BMI2-NEXT:  # %bb.3: # %if.then
+; X86-BMI2-NEXT:    movzwl %bx, %eax
+; X86-BMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-BMI2-NEXT:  .LBB83_4: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_and_16_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andb $15, %cl
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl $-2, %r8d
+; X64-NOBMI2-NEXT:    roll %cl, %r8d
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB83_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    andl %r8d, %ecx
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB83_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %ecx
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    testl %ecx, %edx
+; X64-NOBMI2-NEXT:    je .LBB83_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB83_3: # %if.then
+; X64-NOBMI2-NEXT:    movzwl %si, %eax
+; X64-NOBMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_and_16_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    andb $15, %cl
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %ecx, %eax, %edx
+; X64-BMI2-NEXT:    movl $-2, %r8d
+; X64-BMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-BMI2-NEXT:    roll %cl, %r8d
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB83_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    andl %r8d, %ecx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB83_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %ecx
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    testl %ecx, %edx
+; X64-BMI2-NEXT:    je .LBB83_3
+; X64-BMI2-NEXT:  # %bb.4: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB83_3: # %if.then
+; X64-BMI2-NEXT:    movzwl %si, %eax
+; X64-BMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i16 %c, 15
+  %sh_prom = zext i16 %0 to i32
+  %shl = shl nuw nsw i32 1, %sh_prom
+  %1 = trunc i32 %shl to i16
+  %conv1 = xor i16 %1, -1
+  %2 = atomicrmw and ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %2 to i32
+  %and = and i32 %shl, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %conv = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %conv
+  %3 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %3, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_blsi_and_16_gpr_brz(ptr %v, i16 %c) {
+; X86-BMI2-LABEL: atomic_blsi_and_16_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    .cfi_offset %esi, -16
+; X86-BMI2-NEXT:    .cfi_offset %edi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    blsil %ecx, %esi
+; X86-BMI2-NEXT:    movl %esi, %edi
+; X86-BMI2-NEXT:    notl %edi
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB84_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %edi, %ebx
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %bx, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB84_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %edi
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:    testl %edi, %esi
+; X86-BMI2-NEXT:    jne .LBB84_4
+; X86-BMI2-NEXT:  # %bb.3: # %if.then
+; X86-BMI2-NEXT:    movzwl %cx, %eax
+; X86-BMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-BMI2-NEXT:  .LBB84_4: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_and_16_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movzwl %si, %ecx
+; X64-BMI2-NEXT:    blsil %ecx, %edx
+; X64-BMI2-NEXT:    movl %edx, %esi
+; X64-BMI2-NEXT:    notl %esi
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB84_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %r8d
+; X64-BMI2-NEXT:    andl %esi, %r8d
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %r8w, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB84_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %esi
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    testl %esi, %edx
+; X64-BMI2-NEXT:    je .LBB84_3
+; X64-BMI2-NEXT:  # %bb.4: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB84_3: # %if.then
+; X64-BMI2-NEXT:    movzwl (%rdi,%rcx,2), %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %sub = sub nsw i32 0, %conv
+  %and = and i32 %conv, %sub
+  %0 = trunc i32 %and to i16
+  %conv2 = xor i16 %0, -1
+  %1 = atomicrmw and ptr %v, i16 %conv2 monotonic, align 2
+  %conv3 = zext i16 %1 to i32
+  %and8 = and i32 %and, %conv3
+  %tobool.not = icmp eq i32 %and8, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %idxprom
+  %2 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %2, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_and_16_gpr_brnz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_and_16_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl $-2, %edi
+; X86-NOBMI2-NEXT:    roll %cl, %edi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB85_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %edi, %ebx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %bx, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB85_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %eax
+; X86-NOBMI2-NEXT:    testl %eax, %esi
+; X86-NOBMI2-NEXT:    je .LBB85_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movzwl %cx, %eax
+; X86-NOBMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-NOBMI2-NEXT:    jmp .LBB85_5
+; X86-NOBMI2-NEXT:  .LBB85_3:
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:  .LBB85_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_and_16_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    .cfi_offset %esi, -16
+; X86-BMI2-NEXT:    .cfi_offset %edi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %esi
+; X86-BMI2-NEXT:    movl $-2, %edi
+; X86-BMI2-NEXT:    roll %cl, %edi
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB85_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %edi, %ebx
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %bx, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB85_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %eax
+; X86-BMI2-NEXT:    testl %eax, %esi
+; X86-BMI2-NEXT:    je .LBB85_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movzwl %cx, %eax
+; X86-BMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-BMI2-NEXT:    jmp .LBB85_5
+; X86-BMI2-NEXT:  .LBB85_3:
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:  .LBB85_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_and_16_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl $-2, %esi
+; X64-NOBMI2-NEXT:    roll %cl, %esi
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB85_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %r8d
+; X64-NOBMI2-NEXT:    andl %esi, %r8d
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %r8w, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB85_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %eax
+; X64-NOBMI2-NEXT:    testl %eax, %edx
+; X64-NOBMI2-NEXT:    je .LBB85_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movzwl %cx, %eax
+; X64-NOBMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB85_3:
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_and_16_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %edx
+; X64-BMI2-NEXT:    movl $-2, %esi
+; X64-BMI2-NEXT:    roll %cl, %esi
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB85_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %r8d
+; X64-BMI2-NEXT:    andl %esi, %r8d
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %r8w, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB85_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %eax
+; X64-BMI2-NEXT:    testl %eax, %edx
+; X64-BMI2-NEXT:    je .LBB85_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movzwl %cx, %eax
+; X64-BMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB85_3:
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %shl = shl nuw i32 1, %conv
+  %0 = trunc i32 %shl to i16
+  %conv1 = xor i16 %0, -1
+  %1 = atomicrmw and ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %1 to i32
+  %and = and i32 %shl, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %idxprom
+  %2 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %2, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_mask0_and_16_gpr_brnz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_and_16_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movw $-2, %si
+; X86-NOBMI2-NEXT:    rolw %cl, %si
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB86_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    andl %esi, %edi
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB86_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %eax
+; X86-NOBMI2-NEXT:    btl %ecx, %eax
+; X86-NOBMI2-NEXT:    jae .LBB86_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movzwl %cx, %eax
+; X86-NOBMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-NOBMI2-NEXT:    jmp .LBB86_5
+; X86-NOBMI2-NEXT:  .LBB86_3:
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:  .LBB86_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_and_16_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movw $-2, %si
+; X86-BMI2-NEXT:    rolw %cl, %si
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB86_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    andl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB86_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %eax
+; X86-BMI2-NEXT:    btl %ecx, %eax
+; X86-BMI2-NEXT:    jae .LBB86_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movzwl %cx, %eax
+; X86-BMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-BMI2-NEXT:    jmp .LBB86_5
+; X86-BMI2-NEXT:  .LBB86_3:
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:  .LBB86_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_and_16_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movw $-2, %dx
+; X64-NOBMI2-NEXT:    rolw %cl, %dx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB86_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    andl %edx, %esi
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB86_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %eax
+; X64-NOBMI2-NEXT:    btl %ecx, %eax
+; X64-NOBMI2-NEXT:    jae .LBB86_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movzwl %cx, %eax
+; X64-NOBMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB86_3:
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_and_16_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    movw $-2, %dx
+; X64-BMI2-NEXT:    rolw %cl, %dx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB86_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %esi
+; X64-BMI2-NEXT:    andl %edx, %esi
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB86_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %eax
+; X64-BMI2-NEXT:    btl %ecx, %eax
+; X64-BMI2-NEXT:    jae .LBB86_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movzwl %cx, %eax
+; X64-BMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB86_3:
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i16 %c, 15
+  %shl = shl nuw i16 1, %0
+  %not = xor i16 %shl, -1
+  %1 = atomicrmw and ptr %v, i16 %not monotonic, align 2
+  %conv2 = zext i16 %1 to i32
+  %conv3 = zext i16 %c to i32
+  %shl4 = shl nuw i32 1, %conv3
+  %and = and i32 %shl4, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %conv = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %conv
+  %2 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %2, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_mask1_and_16_gpr_brnz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_and_16_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $-2, %esi
+; X86-NOBMI2-NEXT:    roll %cl, %esi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB87_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    andl %esi, %edi
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB87_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %eax
+; X86-NOBMI2-NEXT:    movl %ecx, %esi
+; X86-NOBMI2-NEXT:    andl $15, %esi
+; X86-NOBMI2-NEXT:    btl %esi, %eax
+; X86-NOBMI2-NEXT:    jae .LBB87_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movzwl %cx, %eax
+; X86-NOBMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-NOBMI2-NEXT:    jmp .LBB87_5
+; X86-NOBMI2-NEXT:  .LBB87_3:
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:  .LBB87_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_and_16_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $-2, %esi
+; X86-BMI2-NEXT:    roll %cl, %esi
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB87_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    andl %esi, %edi
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %di, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB87_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %eax
+; X86-BMI2-NEXT:    movl %ecx, %esi
+; X86-BMI2-NEXT:    andl $15, %esi
+; X86-BMI2-NEXT:    btl %esi, %eax
+; X86-BMI2-NEXT:    jae .LBB87_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movzwl %cx, %eax
+; X86-BMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-BMI2-NEXT:    jmp .LBB87_5
+; X86-BMI2-NEXT:  .LBB87_3:
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:  .LBB87_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_and_16_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $-2, %edx
+; X64-NOBMI2-NEXT:    roll %cl, %edx
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB87_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    andl %edx, %esi
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB87_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %eax
+; X64-NOBMI2-NEXT:    movl %ecx, %edx
+; X64-NOBMI2-NEXT:    andl $15, %edx
+; X64-NOBMI2-NEXT:    btl %edx, %eax
+; X64-NOBMI2-NEXT:    jae .LBB87_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movzwl %cx, %eax
+; X64-NOBMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB87_3:
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_and_16_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    movl $-2, %edx
+; X64-BMI2-NEXT:    roll %cl, %edx
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB87_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %esi
+; X64-BMI2-NEXT:    andl %edx, %esi
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %si, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB87_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %eax
+; X64-BMI2-NEXT:    movl %ecx, %edx
+; X64-BMI2-NEXT:    andl $15, %edx
+; X64-BMI2-NEXT:    btl %edx, %eax
+; X64-BMI2-NEXT:    jae .LBB87_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movzwl %cx, %eax
+; X64-BMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB87_3:
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %shl = shl nuw i32 1, %conv
+  %0 = trunc i32 %shl to i16
+  %conv1 = xor i16 %0, -1
+  %1 = atomicrmw and ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %1 to i32
+  %2 = and i16 %c, 15
+  %sh_prom = zext i16 %2 to i32
+  %shl4 = shl nuw nsw i32 1, %sh_prom
+  %and = and i32 %shl4, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %conv3 = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %conv3
+  %3 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %3, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_mask01_and_16_gpr_brnz(ptr %v, i16 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_and_16_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ebx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl %ebx, %ecx
+; X86-NOBMI2-NEXT:    andb $15, %cl
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl $-2, %edi
+; X86-NOBMI2-NEXT:    roll %cl, %edi
+; X86-NOBMI2-NEXT:    movzwl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB88_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    andl %edi, %ecx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %cx, (%edx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB88_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movzwl %ax, %eax
+; X86-NOBMI2-NEXT:    testl %eax, %esi
+; X86-NOBMI2-NEXT:    je .LBB88_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movzwl %bx, %eax
+; X86-NOBMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-NOBMI2-NEXT:    jmp .LBB88_5
+; X86-NOBMI2-NEXT:  .LBB88_3:
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:  .LBB88_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_and_16_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    .cfi_offset %esi, -16
+; X86-BMI2-NEXT:    .cfi_offset %edi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ebx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl %ebx, %ecx
+; X86-BMI2-NEXT:    andb $15, %cl
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %esi
+; X86-BMI2-NEXT:    movl $-2, %edi
+; X86-BMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-BMI2-NEXT:    roll %cl, %edi
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB88_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ecx
+; X86-BMI2-NEXT:    andl %edi, %ecx
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %cx, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB88_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %eax
+; X86-BMI2-NEXT:    testl %eax, %esi
+; X86-BMI2-NEXT:    je .LBB88_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movzwl %bx, %eax
+; X86-BMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-BMI2-NEXT:    jmp .LBB88_5
+; X86-BMI2-NEXT:  .LBB88_3:
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:  .LBB88_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_and_16_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andb $15, %cl
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl $-2, %r8d
+; X64-NOBMI2-NEXT:    roll %cl, %r8d
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB88_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    andl %r8d, %ecx
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB88_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movzwl %ax, %eax
+; X64-NOBMI2-NEXT:    testl %eax, %edx
+; X64-NOBMI2-NEXT:    je .LBB88_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movzwl %si, %eax
+; X64-NOBMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB88_3:
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_and_16_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    andb $15, %cl
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %ecx, %eax, %edx
+; X64-BMI2-NEXT:    movl $-2, %r8d
+; X64-BMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-BMI2-NEXT:    roll %cl, %r8d
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB88_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    andl %r8d, %ecx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB88_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %eax
+; X64-BMI2-NEXT:    testl %eax, %edx
+; X64-BMI2-NEXT:    je .LBB88_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movzwl %si, %eax
+; X64-BMI2-NEXT:    movzwl (%rdi,%rax,2), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB88_3:
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i16 %c, 15
+  %sh_prom = zext i16 %0 to i32
+  %shl = shl nuw nsw i32 1, %sh_prom
+  %1 = trunc i32 %shl to i16
+  %conv1 = xor i16 %1, -1
+  %2 = atomicrmw and ptr %v, i16 %conv1 monotonic, align 2
+  %conv2 = zext i16 %2 to i32
+  %and = and i32 %shl, %conv2
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %conv = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %conv
+  %3 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %3, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_blsi_and_16_gpr_brnz(ptr %v, i16 %c) {
+; X86-BMI2-LABEL: atomic_blsi_and_16_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    .cfi_offset %esi, -16
+; X86-BMI2-NEXT:    .cfi_offset %edi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movzwl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    blsil %ecx, %esi
+; X86-BMI2-NEXT:    movl %esi, %edi
+; X86-BMI2-NEXT:    notl %edi
+; X86-BMI2-NEXT:    movzwl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB89_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %edi, %ebx
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %bx, (%edx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB89_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movzwl %ax, %eax
+; X86-BMI2-NEXT:    testl %eax, %esi
+; X86-BMI2-NEXT:    je .LBB89_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movzwl %cx, %eax
+; X86-BMI2-NEXT:    movzwl (%edx,%eax,2), %eax
+; X86-BMI2-NEXT:    jmp .LBB89_5
+; X86-BMI2-NEXT:  .LBB89_3:
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:  .LBB89_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_and_16_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movzwl %si, %ecx
+; X64-BMI2-NEXT:    blsil %ecx, %edx
+; X64-BMI2-NEXT:    movl %edx, %esi
+; X64-BMI2-NEXT:    notl %esi
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB89_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %r8d
+; X64-BMI2-NEXT:    andl %esi, %r8d
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %r8w, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB89_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movzwl %ax, %eax
+; X64-BMI2-NEXT:    testl %eax, %edx
+; X64-BMI2-NEXT:    je .LBB89_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movzwl (%rdi,%rcx,2), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB89_3:
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    retq
+entry:
+  %conv = zext i16 %c to i32
+  %sub = sub nsw i32 0, %conv
+  %and = and i32 %conv, %sub
+  %0 = trunc i32 %and to i16
+  %conv2 = xor i16 %0, -1
+  %1 = atomicrmw and ptr %v, i16 %conv2 monotonic, align 2
+  %conv3 = zext i16 %1 to i32
+  %and8 = and i32 %and, %conv3
+  %tobool.not = icmp eq i32 %and8, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i16 %c to i64
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 %idxprom
+  %2 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %2, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_xor_16_const_val(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_xor_16_const_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    lock btcw $4, (%ecx)
+; X86-NOBMI2-NEXT:    setb %al
+; X86-NOBMI2-NEXT:    shll $4, %eax
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_xor_16_const_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    xorl %eax, %eax
+; X86-BMI2-NEXT:    lock btcw $4, (%ecx)
+; X86-BMI2-NEXT:    setb %al
+; X86-BMI2-NEXT:    shll $4, %eax
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_xor_16_const_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btcw $4, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    shll $4, %eax
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_xor_16_const_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btcw $4, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shll $4, %eax
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw xor ptr %v, i16 16 monotonic, align 2
+  %1 = and i16 %0, 16
+  ret i16 %1
+}
+
+define i16 @atomic_shl1_xor_16_const_valz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_xor_16_const_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movzwl (%ecx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB91_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    xorl $16, %edx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %dx, (%ecx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB91_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    testb $16, %al
+; X86-NOBMI2-NEXT:    sete %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_xor_16_const_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movzwl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB91_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    xorl $16, %edx
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %dx, (%ecx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB91_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    testb $16, %al
+; X86-BMI2-NEXT:    sete %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_xor_16_const_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB91_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    xorl $16, %ecx
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB91_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    testb $16, %al
+; X64-NOBMI2-NEXT:    sete %cl
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_xor_16_const_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB91_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    xorl $16, %ecx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB91_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    testb $16, %al
+; X64-BMI2-NEXT:    sete %cl
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw xor ptr %v, i16 16 monotonic, align 2
+  %1 = lshr i16 %0, 4
+  %.lobit = and i16 %1, 1
+  %conv1 = xor i16 %.lobit, 1
+  ret i16 %conv1
+}
+
+define i16 @atomic_shl1_xor_16_const_valnz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_xor_16_const_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movzwl (%ecx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB92_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    xorl $16, %edx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %dx, (%ecx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB92_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    shrl $4, %eax
+; X86-NOBMI2-NEXT:    andl $1, %eax
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_xor_16_const_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movzwl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB92_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    xorl $16, %edx
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %dx, (%ecx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB92_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    shrl $4, %eax
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_xor_16_const_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB92_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    xorl $16, %ecx
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB92_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    shrl $4, %eax
+; X64-NOBMI2-NEXT:    andl $1, %eax
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_xor_16_const_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB92_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    xorl $16, %ecx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB92_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrl $4, %eax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw xor ptr %v, i16 16 monotonic, align 2
+  %1 = lshr i16 %0, 4
+  %.lobit = and i16 %1, 1
+  ret i16 %.lobit
+}
+
+define i16 @atomic_shl1_xor_16_const_br(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_xor_16_const_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    lock btcw $4, (%eax)
+; X86-NOBMI2-NEXT:    jae .LBB93_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X86-NOBMI2-NEXT:    movzwl 8(%eax), %eax
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB93_1:
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_xor_16_const_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    lock btcw $4, (%eax)
+; X86-BMI2-NEXT:    jae .LBB93_1
+; X86-BMI2-NEXT:  # %bb.2: # %if.then
+; X86-BMI2-NEXT:    movzwl 8(%eax), %eax
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB93_1:
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_xor_16_const_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    lock btcw $4, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB93_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movzwl 8(%rdi), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB93_1:
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_xor_16_const_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    lock btcw $4, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB93_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movzwl 8(%rdi), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB93_1:
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw xor ptr %v, i16 16 monotonic, align 2
+  %1 = and i16 %0, 16
+  %tobool.not = icmp eq i16 %1, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 4
+  %2 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %2, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_xor_16_const_brz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_xor_16_const_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    lock btcw $4, (%ecx)
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:    jae .LBB94_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %return
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB94_1: # %if.then
+; X86-NOBMI2-NEXT:    movzwl 8(%ecx), %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_xor_16_const_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    lock btcw $4, (%ecx)
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:    jae .LBB94_1
+; X86-BMI2-NEXT:  # %bb.2: # %return
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB94_1: # %if.then
+; X86-BMI2-NEXT:    movzwl 8(%ecx), %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_xor_16_const_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    lock btcw $4, (%rdi)
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    jae .LBB94_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB94_1: # %if.then
+; X64-NOBMI2-NEXT:    movzwl 8(%rdi), %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_xor_16_const_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    lock btcw $4, (%rdi)
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    jae .LBB94_1
+; X64-BMI2-NEXT:  # %bb.2: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB94_1: # %if.then
+; X64-BMI2-NEXT:    movzwl 8(%rdi), %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw xor ptr %v, i16 16 monotonic, align 2
+  %1 = and i16 %0, 16
+  %tobool.not = icmp eq i16 %1, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 4
+  %2 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %2, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_xor_16_const_brnz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_xor_16_const_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    lock btcw $4, (%eax)
+; X86-NOBMI2-NEXT:    jae .LBB95_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X86-NOBMI2-NEXT:    movzwl 8(%eax), %eax
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB95_1:
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_xor_16_const_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    lock btcw $4, (%eax)
+; X86-BMI2-NEXT:    jae .LBB95_1
+; X86-BMI2-NEXT:  # %bb.2: # %if.then
+; X86-BMI2-NEXT:    movzwl 8(%eax), %eax
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB95_1:
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_xor_16_const_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    lock btcw $4, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB95_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movzwl 8(%rdi), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB95_1:
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_xor_16_const_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    lock btcw $4, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB95_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movzwl 8(%rdi), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB95_1:
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw xor ptr %v, i16 16 monotonic, align 2
+  %1 = and i16 %0, 16
+  %tobool.not = icmp eq i16 %1, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 4
+  %2 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %2, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_or_16_const_val(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_or_16_const_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    lock btsw $4, (%ecx)
+; X86-NOBMI2-NEXT:    setb %al
+; X86-NOBMI2-NEXT:    shll $4, %eax
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_or_16_const_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    xorl %eax, %eax
+; X86-BMI2-NEXT:    lock btsw $4, (%ecx)
+; X86-BMI2-NEXT:    setb %al
+; X86-BMI2-NEXT:    shll $4, %eax
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_or_16_const_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btsw $4, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    shll $4, %eax
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_or_16_const_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btsw $4, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shll $4, %eax
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw or ptr %v, i16 16 monotonic, align 2
+  %1 = and i16 %0, 16
+  ret i16 %1
+}
+
+define i16 @atomic_shl1_or_16_const_valz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_or_16_const_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movzwl (%ecx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB97_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    orl $16, %edx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %dx, (%ecx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB97_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    testb $16, %al
+; X86-NOBMI2-NEXT:    sete %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_or_16_const_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movzwl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB97_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    orl $16, %edx
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %dx, (%ecx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB97_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    testb $16, %al
+; X86-BMI2-NEXT:    sete %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_or_16_const_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB97_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    orl $16, %ecx
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB97_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    testb $16, %al
+; X64-NOBMI2-NEXT:    sete %cl
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_or_16_const_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB97_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    orl $16, %ecx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB97_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    testb $16, %al
+; X64-BMI2-NEXT:    sete %cl
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw or ptr %v, i16 16 monotonic, align 2
+  %1 = lshr i16 %0, 4
+  %.lobit = and i16 %1, 1
+  %conv1 = xor i16 %.lobit, 1
+  ret i16 %conv1
+}
+
+define i16 @atomic_shl1_or_16_const_valnz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_or_16_const_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movzwl (%ecx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB98_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    orl $16, %edx
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %dx, (%ecx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB98_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    shrl $4, %eax
+; X86-NOBMI2-NEXT:    andl $1, %eax
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_or_16_const_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movzwl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB98_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    orl $16, %edx
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %dx, (%ecx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB98_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    shrl $4, %eax
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_or_16_const_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB98_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    orl $16, %ecx
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB98_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    shrl $4, %eax
+; X64-NOBMI2-NEXT:    andl $1, %eax
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_or_16_const_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB98_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    orl $16, %ecx
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB98_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrl $4, %eax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw or ptr %v, i16 16 monotonic, align 2
+  %1 = lshr i16 %0, 4
+  %.lobit = and i16 %1, 1
+  ret i16 %.lobit
+}
+
+define i16 @atomic_shl1_or_16_const_br(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_or_16_const_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    lock btsw $4, (%eax)
+; X86-NOBMI2-NEXT:    jae .LBB99_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X86-NOBMI2-NEXT:    movzwl 8(%eax), %eax
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB99_1:
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_or_16_const_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    lock btsw $4, (%eax)
+; X86-BMI2-NEXT:    jae .LBB99_1
+; X86-BMI2-NEXT:  # %bb.2: # %if.then
+; X86-BMI2-NEXT:    movzwl 8(%eax), %eax
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB99_1:
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_or_16_const_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    lock btsw $4, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB99_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movzwl 8(%rdi), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB99_1:
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_or_16_const_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    lock btsw $4, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB99_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movzwl 8(%rdi), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB99_1:
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw or ptr %v, i16 16 monotonic, align 2
+  %1 = and i16 %0, 16
+  %tobool.not = icmp eq i16 %1, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 4
+  %2 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %2, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_or_16_const_brz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_or_16_const_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    lock btsw $4, (%ecx)
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:    jae .LBB100_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %return
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB100_1: # %if.then
+; X86-NOBMI2-NEXT:    movzwl 8(%ecx), %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_or_16_const_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    lock btsw $4, (%ecx)
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:    jae .LBB100_1
+; X86-BMI2-NEXT:  # %bb.2: # %return
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB100_1: # %if.then
+; X86-BMI2-NEXT:    movzwl 8(%ecx), %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_or_16_const_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    lock btsw $4, (%rdi)
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    jae .LBB100_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB100_1: # %if.then
+; X64-NOBMI2-NEXT:    movzwl 8(%rdi), %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_or_16_const_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    lock btsw $4, (%rdi)
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    jae .LBB100_1
+; X64-BMI2-NEXT:  # %bb.2: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB100_1: # %if.then
+; X64-BMI2-NEXT:    movzwl 8(%rdi), %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw or ptr %v, i16 16 monotonic, align 2
+  %1 = and i16 %0, 16
+  %tobool.not = icmp eq i16 %1, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 4
+  %2 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %2, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_or_16_const_brnz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_or_16_const_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    lock btsw $4, (%eax)
+; X86-NOBMI2-NEXT:    jae .LBB101_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X86-NOBMI2-NEXT:    movzwl 8(%eax), %eax
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB101_1:
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_or_16_const_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    lock btsw $4, (%eax)
+; X86-BMI2-NEXT:    jae .LBB101_1
+; X86-BMI2-NEXT:  # %bb.2: # %if.then
+; X86-BMI2-NEXT:    movzwl 8(%eax), %eax
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB101_1:
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_or_16_const_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    lock btsw $4, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB101_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movzwl 8(%rdi), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB101_1:
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_or_16_const_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    lock btsw $4, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB101_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movzwl 8(%rdi), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB101_1:
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw or ptr %v, i16 16 monotonic, align 2
+  %1 = and i16 %0, 16
+  %tobool.not = icmp eq i16 %1, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 4
+  %2 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %2, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_and_16_const_val(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_and_16_const_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    lock btrw $4, (%ecx)
+; X86-NOBMI2-NEXT:    setb %al
+; X86-NOBMI2-NEXT:    shll $4, %eax
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_and_16_const_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    xorl %eax, %eax
+; X86-BMI2-NEXT:    lock btrw $4, (%ecx)
+; X86-BMI2-NEXT:    setb %al
+; X86-BMI2-NEXT:    shll $4, %eax
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_and_16_const_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btrw $4, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    shll $4, %eax
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_and_16_const_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btrw $4, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shll $4, %eax
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw and ptr %v, i16 -17 monotonic, align 2
+  %1 = and i16 %0, 16
+  ret i16 %1
+}
+
+define i16 @atomic_shl1_and_16_const_valz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_and_16_const_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movzwl (%ecx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB103_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    andl $65519, %edx # imm = 0xFFEF
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %dx, (%ecx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB103_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    testb $16, %al
+; X86-NOBMI2-NEXT:    sete %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_and_16_const_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movzwl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB103_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    andl $65519, %edx # imm = 0xFFEF
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %dx, (%ecx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB103_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    testb $16, %al
+; X86-BMI2-NEXT:    sete %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_and_16_const_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB103_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    andl $65519, %ecx # imm = 0xFFEF
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB103_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    testb $16, %al
+; X64-NOBMI2-NEXT:    sete %cl
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_and_16_const_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB103_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    andl $65519, %ecx # imm = 0xFFEF
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB103_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    testb $16, %al
+; X64-BMI2-NEXT:    sete %cl
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw and ptr %v, i16 -17 monotonic, align 2
+  %1 = lshr i16 %0, 4
+  %.lobit = and i16 %1, 1
+  %conv1 = xor i16 %.lobit, 1
+  ret i16 %conv1
+}
+
+define i16 @atomic_shl1_and_16_const_valnz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_and_16_const_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movzwl (%ecx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB104_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    andl $65519, %edx # imm = 0xFFEF
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    lock cmpxchgw %dx, (%ecx)
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-NOBMI2-NEXT:    jne .LBB104_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    shrl $4, %eax
+; X86-NOBMI2-NEXT:    andl $1, %eax
+; X86-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_and_16_const_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movzwl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB104_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    andl $65519, %edx # imm = 0xFFEF
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    lock cmpxchgw %dx, (%ecx)
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X86-BMI2-NEXT:    jne .LBB104_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    shrl $4, %eax
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_and_16_const_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movzwl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB104_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    andl $65519, %ecx # imm = 0xFFEF
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-NOBMI2-NEXT:    jne .LBB104_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    shrl $4, %eax
+; X64-NOBMI2-NEXT:    andl $1, %eax
+; X64-NOBMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_and_16_const_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movzwl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB104_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    andl $65519, %ecx # imm = 0xFFEF
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    lock cmpxchgw %cx, (%rdi)
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax def $eax
+; X64-BMI2-NEXT:    jne .LBB104_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrl $4, %eax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    # kill: def $ax killed $ax killed $eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw and ptr %v, i16 -17 monotonic, align 2
+  %1 = lshr i16 %0, 4
+  %.lobit = and i16 %1, 1
+  ret i16 %.lobit
+}
+
+define i16 @atomic_shl1_and_16_const_br(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_and_16_const_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    lock btrw $4, (%eax)
+; X86-NOBMI2-NEXT:    jae .LBB105_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X86-NOBMI2-NEXT:    movzwl 8(%eax), %eax
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB105_1:
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_and_16_const_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    lock btrw $4, (%eax)
+; X86-BMI2-NEXT:    jae .LBB105_1
+; X86-BMI2-NEXT:  # %bb.2: # %if.then
+; X86-BMI2-NEXT:    movzwl 8(%eax), %eax
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB105_1:
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_and_16_const_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    lock btrw $4, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB105_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movzwl 8(%rdi), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB105_1:
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_and_16_const_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    lock btrw $4, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB105_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movzwl 8(%rdi), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB105_1:
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw and ptr %v, i16 -17 monotonic, align 2
+  %1 = and i16 %0, 16
+  %tobool.not = icmp eq i16 %1, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 4
+  %2 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %2, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_and_16_const_brz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_and_16_const_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    lock btrw $4, (%ecx)
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:    jae .LBB106_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %return
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB106_1: # %if.then
+; X86-NOBMI2-NEXT:    movzwl 8(%ecx), %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_and_16_const_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    lock btrw $4, (%ecx)
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:    jae .LBB106_1
+; X86-BMI2-NEXT:  # %bb.2: # %return
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB106_1: # %if.then
+; X86-BMI2-NEXT:    movzwl 8(%ecx), %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_and_16_const_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    lock btrw $4, (%rdi)
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    jae .LBB106_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB106_1: # %if.then
+; X64-NOBMI2-NEXT:    movzwl 8(%rdi), %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_and_16_const_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    lock btrw $4, (%rdi)
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    jae .LBB106_1
+; X64-BMI2-NEXT:  # %bb.2: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB106_1: # %if.then
+; X64-BMI2-NEXT:    movzwl 8(%rdi), %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw and ptr %v, i16 -17 monotonic, align 2
+  %1 = and i16 %0, 16
+  %tobool.not = icmp eq i16 %1, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 4
+  %2 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %2, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i16 @atomic_shl1_and_16_const_brnz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_and_16_const_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    lock btrw $4, (%eax)
+; X86-NOBMI2-NEXT:    jae .LBB107_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X86-NOBMI2-NEXT:    movzwl 8(%eax), %eax
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB107_1:
+; X86-NOBMI2-NEXT:    movw $123, %ax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_and_16_const_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    lock btrw $4, (%eax)
+; X86-BMI2-NEXT:    jae .LBB107_1
+; X86-BMI2-NEXT:  # %bb.2: # %if.then
+; X86-BMI2-NEXT:    movzwl 8(%eax), %eax
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB107_1:
+; X86-BMI2-NEXT:    movw $123, %ax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_and_16_const_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    lock btrw $4, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB107_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movzwl 8(%rdi), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB107_1:
+; X64-NOBMI2-NEXT:    movw $123, %ax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_and_16_const_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    lock btrw $4, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB107_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movzwl 8(%rdi), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB107_1:
+; X64-BMI2-NEXT:    movw $123, %ax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw and ptr %v, i16 -17 monotonic, align 2
+  %1 = and i16 %0, 16
+  %tobool.not = icmp eq i16 %1, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i16, ptr %v, i64 4
+  %2 = load i16, ptr %arrayidx, align 2
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i16 [ %2, %if.then ], [ 123, %entry ]
+  ret i16 %retval.0
+}
+
+define i32 @atomic_shl1_xor_32_gpr_val(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_xor_32_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $31, %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    lock btcl %ecx, (%edx)
+; X86-NOBMI2-NEXT:    setb %al
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    shll %cl, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_xor_32_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    andl $31, %ecx
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    lock btcl %ecx, (%eax)
+; X86-BMI2-NEXT:    setb %dl
+; X86-BMI2-NEXT:    shlxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_xor_32_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andl $31, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btcl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_xor_32_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $31, %esi
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btcl %esi, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %0 = atomicrmw xor ptr %v, i32 %shl monotonic, align 4
+  %and = and i32 %0, %shl
+  ret i32 %and
+}
+
+define i32 @atomic_shl2_xor_32_gpr_val(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl2_xor_32_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl $2, %edx
+; X86-NOBMI2-NEXT:    shll %cl, %edx
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB109_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    xorl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB109_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl2_xor_32_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    .cfi_offset %esi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl $2, %edx
+; X86-BMI2-NEXT:    shlxl %eax, %edx, %edx
+; X86-BMI2-NEXT:    movl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB109_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %esi
+; X86-BMI2-NEXT:    xorl %edx, %esi
+; X86-BMI2-NEXT:    lock cmpxchgl %esi, (%ecx)
+; X86-BMI2-NEXT:    jne .LBB109_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %edx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl2_xor_32_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $2, %edx
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB109_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    xorl %edx, %ecx
+; X64-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB109_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    andl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl2_xor_32_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $2, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB109_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB109_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    andl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl i32 2, %c
+  %0 = atomicrmw xor ptr %v, i32 %shl monotonic, align 4
+  %and = and i32 %0, %shl
+  ret i32 %and
+}
+
+define i32 @atomic_shl1_neq_xor_32_gpr_val(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_xor_32_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB110_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    xorl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB110_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    incb %cl
+; X86-NOBMI2-NEXT:    movl $1, %edx
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    shll %cl, %edx
+; X86-NOBMI2-NEXT:    andl %edx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_xor_32_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %esi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB110_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    xorl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB110_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    incb %cl
+; X86-BMI2-NEXT:    movl $1, %edx
+; X86-BMI2-NEXT:    shlxl %ecx, %edx, %ecx
+; X86-BMI2-NEXT:    andl %ecx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_xor_32_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB110_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    xorl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB110_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    incb %cl
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    andl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_xor_32_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB110_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB110_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    incb %sil
+; X64-BMI2-NEXT:    movl $1, %ecx
+; X64-BMI2-NEXT:    shlxl %esi, %ecx, %ecx
+; X64-BMI2-NEXT:    andl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %0 = atomicrmw xor ptr %v, i32 %shl monotonic, align 4
+  %add = add i32 %c, 1
+  %shl1 = shl nuw i32 1, %add
+  %and = and i32 %0, %shl1
+  ret i32 %and
+}
+
+define i32 @atomic_shl1_small_mask_xor_32_gpr_val(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_small_mask_xor_32_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $15, %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    lock btcl %ecx, (%edx)
+; X86-NOBMI2-NEXT:    setb %al
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    shll %cl, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_small_mask_xor_32_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    andl $15, %ecx
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    lock btcl %ecx, (%eax)
+; X86-BMI2-NEXT:    setb %dl
+; X86-BMI2-NEXT:    shlxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_small_mask_xor_32_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andl $15, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btcl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_small_mask_xor_32_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $15, %esi
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btcl %esi, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i32 %c, 15
+  %shl = shl nuw nsw i32 1, %0
+  %1 = atomicrmw xor ptr %v, i32 %shl monotonic, align 4
+  %and = and i32 %1, %shl
+  ret i32 %and
+}
+
+define i32 @atomic_shl1_mask0_xor_32_gpr_val(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_xor_32_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $31, %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    lock btcl %ecx, (%edx)
+; X86-NOBMI2-NEXT:    setb %al
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    shll %cl, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_xor_32_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    andl $31, %ecx
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    lock btcl %ecx, (%eax)
+; X86-BMI2-NEXT:    setb %dl
+; X86-BMI2-NEXT:    shlxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_xor_32_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andl $31, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btcl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_xor_32_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $31, %esi
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btcl %esi, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i32 %c, 31
+  %shl = shl nuw i32 1, %0
+  %1 = atomicrmw xor ptr %v, i32 %shl monotonic, align 4
+  %shl1 = shl nuw i32 1, %c
+  %and = and i32 %1, %shl1
+  ret i32 %and
+}
+
+define i32 @atomic_shl1_mask1_xor_32_gpr_val(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_xor_32_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $31, %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    lock btcl %ecx, (%edx)
+; X86-NOBMI2-NEXT:    setb %al
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    shll %cl, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_xor_32_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    andl $31, %ecx
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    lock btcl %ecx, (%eax)
+; X86-BMI2-NEXT:    setb %dl
+; X86-BMI2-NEXT:    shlxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_xor_32_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andl $31, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btcl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_xor_32_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $31, %esi
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btcl %esi, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %0 = atomicrmw xor ptr %v, i32 %shl monotonic, align 4
+  %1 = and i32 %c, 31
+  %shl1 = shl nuw i32 1, %1
+  %and = and i32 %0, %shl1
+  ret i32 %and
+}
+
+define i32 @atomic_shl1_mask01_xor_32_gpr_val(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_xor_32_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $31, %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    lock btcl %ecx, (%edx)
+; X86-NOBMI2-NEXT:    setb %al
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    shll %cl, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_xor_32_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    andl $31, %ecx
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    lock btcl %ecx, (%eax)
+; X86-BMI2-NEXT:    setb %dl
+; X86-BMI2-NEXT:    shlxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_xor_32_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andl $31, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btcl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_xor_32_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $31, %esi
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btcl %esi, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i32 %c, 31
+  %shl = shl nuw i32 1, %0
+  %1 = atomicrmw xor ptr %v, i32 %shl monotonic, align 4
+  %and = and i32 %1, %shl
+  ret i32 %and
+}
+
+define i32 @atomic_blsi_xor_32_gpr_val(ptr %v, i32 %c) {
+; X86-BMI2-LABEL: atomic_blsi_xor_32_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    .cfi_offset %esi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    blsil {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB115_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %esi
+; X86-BMI2-NEXT:    xorl %ecx, %esi
+; X86-BMI2-NEXT:    lock cmpxchgl %esi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB115_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ecx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_xor_32_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    blsil %esi, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB115_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB115_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    andl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %sub = sub i32 0, %c
+  %and = and i32 %sub, %c
+  %0 = atomicrmw xor ptr %v, i32 %and monotonic, align 4
+  %and3 = and i32 %0, %and
+  ret i32 %and3
+}
+
+define i32 @atomic_shl1_xor_32_gpr_valz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_xor_32_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB116_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    xorl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB116_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    btl %ecx, %eax
+; X86-NOBMI2-NEXT:    setae %dl
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_xor_32_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %edx, %eax, %esi
+; X86-BMI2-NEXT:    movl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB116_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    xorl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%ecx)
+; X86-BMI2-NEXT:    jne .LBB116_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    btl %edx, %eax
+; X86-BMI2-NEXT:    setae %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_xor_32_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB116_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    xorl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB116_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btl %ecx, %eax
+; X64-NOBMI2-NEXT:    setae %dl
+; X64-NOBMI2-NEXT:    movl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_xor_32_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB116_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB116_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    btl %esi, %eax
+; X64-BMI2-NEXT:    setae %cl
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %0 = atomicrmw xor ptr %v, i32 %shl monotonic, align 4
+  %1 = xor i32 %0, -1
+  %2 = lshr i32 %1, %c
+  %lnot.ext = and i32 %2, 1
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl2_xor_32_gpr_valz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl2_xor_32_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl $2, %edx
+; X86-NOBMI2-NEXT:    shll %cl, %edx
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB117_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    xorl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB117_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    testl %edx, %eax
+; X86-NOBMI2-NEXT:    sete %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl2_xor_32_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    .cfi_offset %esi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl $2, %edx
+; X86-BMI2-NEXT:    shlxl %eax, %edx, %edx
+; X86-BMI2-NEXT:    movl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB117_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %esi
+; X86-BMI2-NEXT:    xorl %edx, %esi
+; X86-BMI2-NEXT:    lock cmpxchgl %esi, (%ecx)
+; X86-BMI2-NEXT:    jne .LBB117_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    testl %edx, %eax
+; X86-BMI2-NEXT:    sete %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl2_xor_32_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $2, %edx
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB117_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    xorl %edx, %ecx
+; X64-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB117_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    testl %edx, %eax
+; X64-NOBMI2-NEXT:    sete %cl
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl2_xor_32_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $2, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %edx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB117_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    xorl %edx, %ecx
+; X64-BMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB117_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    testl %edx, %eax
+; X64-BMI2-NEXT:    sete %cl
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl i32 2, %c
+  %0 = atomicrmw xor ptr %v, i32 %shl monotonic, align 4
+  %and = and i32 %0, %shl
+  %tobool.not = icmp eq i32 %and, 0
+  %lnot.ext = zext i1 %tobool.not to i32
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl1_neq_xor_32_gpr_valz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_xor_32_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB118_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    xorl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB118_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    incb %cl
+; X86-NOBMI2-NEXT:    movzbl %cl, %edx
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    btl %edx, %eax
+; X86-NOBMI2-NEXT:    setae %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_xor_32_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %esi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB118_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    xorl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB118_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    incb %cl
+; X86-BMI2-NEXT:    movzbl %cl, %edx
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    btl %edx, %eax
+; X86-BMI2-NEXT:    setae %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_xor_32_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB118_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    xorl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB118_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    incb %cl
+; X64-NOBMI2-NEXT:    movzbl %cl, %edx
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    btl %edx, %eax
+; X64-NOBMI2-NEXT:    setae %cl
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_xor_32_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB118_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB118_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    incb %sil
+; X64-BMI2-NEXT:    movzbl %sil, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    btl %edx, %eax
+; X64-BMI2-NEXT:    setae %cl
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %0 = atomicrmw xor ptr %v, i32 %shl monotonic, align 4
+  %add = add i32 %c, 1
+  %1 = xor i32 %0, -1
+  %2 = lshr i32 %1, %add
+  %lnot.ext = and i32 %2, 1
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl1_small_mask_xor_32_gpr_valz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_small_mask_xor_32_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $15, %ecx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB119_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    xorl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB119_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    btl %ecx, %eax
+; X86-NOBMI2-NEXT:    setae %dl
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_small_mask_xor_32_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    andl $15, %edx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %edx, %eax, %esi
+; X86-BMI2-NEXT:    movl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB119_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    xorl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%ecx)
+; X86-BMI2-NEXT:    jne .LBB119_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    btl %edx, %eax
+; X86-BMI2-NEXT:    setae %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_small_mask_xor_32_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andl $15, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB119_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    xorl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB119_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btl %ecx, %eax
+; X64-NOBMI2-NEXT:    setae %dl
+; X64-NOBMI2-NEXT:    movl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_small_mask_xor_32_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $15, %esi
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB119_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB119_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    btl %esi, %eax
+; X64-BMI2-NEXT:    setae %cl
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i32 %c, 15
+  %shl = shl nuw nsw i32 1, %0
+  %1 = atomicrmw xor ptr %v, i32 %shl monotonic, align 4
+  %2 = xor i32 %1, -1
+  %3 = lshr i32 %2, %0
+  %lnot.ext = and i32 %3, 1
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl1_mask0_xor_32_gpr_valz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_xor_32_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB120_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    xorl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB120_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    btl %ecx, %eax
+; X86-NOBMI2-NEXT:    setae %dl
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_xor_32_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %edx, %eax, %esi
+; X86-BMI2-NEXT:    movl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB120_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    xorl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%ecx)
+; X86-BMI2-NEXT:    jne .LBB120_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    btl %edx, %eax
+; X86-BMI2-NEXT:    setae %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_xor_32_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB120_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    xorl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB120_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btl %ecx, %eax
+; X64-NOBMI2-NEXT:    setae %dl
+; X64-NOBMI2-NEXT:    movl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_xor_32_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB120_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB120_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    btl %esi, %eax
+; X64-BMI2-NEXT:    setae %cl
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i32 %c, 31
+  %shl = shl nuw i32 1, %0
+  %1 = atomicrmw xor ptr %v, i32 %shl monotonic, align 4
+  %2 = xor i32 %1, -1
+  %3 = lshr i32 %2, %c
+  %lnot.ext = and i32 %3, 1
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl1_mask1_xor_32_gpr_valz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_xor_32_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB121_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    xorl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB121_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    btl %ecx, %eax
+; X86-NOBMI2-NEXT:    setae %dl
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_xor_32_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %edx, %eax, %esi
+; X86-BMI2-NEXT:    movl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB121_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    xorl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%ecx)
+; X86-BMI2-NEXT:    jne .LBB121_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    btl %edx, %eax
+; X86-BMI2-NEXT:    setae %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_xor_32_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB121_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    xorl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB121_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btl %ecx, %eax
+; X64-NOBMI2-NEXT:    setae %dl
+; X64-NOBMI2-NEXT:    movl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_xor_32_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB121_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB121_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    btl %esi, %eax
+; X64-BMI2-NEXT:    setae %cl
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %0 = atomicrmw xor ptr %v, i32 %shl monotonic, align 4
+  %1 = and i32 %c, 31
+  %2 = xor i32 %0, -1
+  %3 = lshr i32 %2, %1
+  %lnot.ext = and i32 %3, 1
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl1_mask01_xor_32_gpr_valz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_xor_32_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $31, %ecx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB122_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    xorl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB122_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    btl %ecx, %eax
+; X86-NOBMI2-NEXT:    setae %dl
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_xor_32_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    andl $31, %edx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %edx, %eax, %esi
+; X86-BMI2-NEXT:    movl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB122_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    xorl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%ecx)
+; X86-BMI2-NEXT:    jne .LBB122_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    btl %edx, %eax
+; X86-BMI2-NEXT:    setae %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_xor_32_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andl $31, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB122_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    xorl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB122_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btl %ecx, %eax
+; X64-NOBMI2-NEXT:    setae %dl
+; X64-NOBMI2-NEXT:    movl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_xor_32_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $31, %esi
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB122_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB122_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    btl %esi, %eax
+; X64-BMI2-NEXT:    setae %cl
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i32 %c, 31
+  %shl = shl nuw i32 1, %0
+  %1 = atomicrmw xor ptr %v, i32 %shl monotonic, align 4
+  %2 = xor i32 %1, -1
+  %3 = lshr i32 %2, %0
+  %lnot.ext = and i32 %3, 1
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_blsi_xor_32_gpr_valz(ptr %v, i32 %c) {
+; X86-BMI2-LABEL: atomic_blsi_xor_32_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    .cfi_offset %esi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    blsil {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB123_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %esi
+; X86-BMI2-NEXT:    xorl %edx, %esi
+; X86-BMI2-NEXT:    lock cmpxchgl %esi, (%ecx)
+; X86-BMI2-NEXT:    jne .LBB123_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    testl %edx, %eax
+; X86-BMI2-NEXT:    sete %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_xor_32_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    blsil %esi, %edx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB123_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    xorl %edx, %ecx
+; X64-BMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB123_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    testl %edx, %eax
+; X64-BMI2-NEXT:    sete %cl
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %sub = sub i32 0, %c
+  %and = and i32 %sub, %c
+  %0 = atomicrmw xor ptr %v, i32 %and monotonic, align 4
+  %and3 = and i32 %0, %and
+  %tobool.not = icmp eq i32 %and3, 0
+  %lnot.ext = zext i1 %tobool.not to i32
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl1_xor_32_gpr_valnz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_xor_32_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB124_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    xorl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB124_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    btl %ecx, %eax
+; X86-NOBMI2-NEXT:    setb %dl
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_xor_32_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %esi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB124_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    xorl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB124_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    shrxl %ecx, %eax, %eax
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_xor_32_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB124_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    xorl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB124_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btl %ecx, %eax
+; X64-NOBMI2-NEXT:    setb %dl
+; X64-NOBMI2-NEXT:    movl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_xor_32_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB124_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB124_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrxl %esi, %eax, %eax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %0 = atomicrmw xor ptr %v, i32 %shl monotonic, align 4
+  %1 = lshr i32 %0, %c
+  %lnot.ext = and i32 %1, 1
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl2_xor_32_gpr_valnz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl2_xor_32_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl $2, %edx
+; X86-NOBMI2-NEXT:    shll %cl, %edx
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB125_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    xorl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB125_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    testl %edx, %eax
+; X86-NOBMI2-NEXT:    setne %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl2_xor_32_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    .cfi_offset %esi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl $2, %edx
+; X86-BMI2-NEXT:    shlxl %eax, %edx, %edx
+; X86-BMI2-NEXT:    movl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB125_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %esi
+; X86-BMI2-NEXT:    xorl %edx, %esi
+; X86-BMI2-NEXT:    lock cmpxchgl %esi, (%ecx)
+; X86-BMI2-NEXT:    jne .LBB125_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    testl %edx, %eax
+; X86-BMI2-NEXT:    setne %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl2_xor_32_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $2, %edx
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB125_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    xorl %edx, %ecx
+; X64-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB125_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    testl %edx, %eax
+; X64-NOBMI2-NEXT:    setne %cl
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl2_xor_32_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $2, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %edx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB125_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    xorl %edx, %ecx
+; X64-BMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB125_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    testl %edx, %eax
+; X64-BMI2-NEXT:    setne %cl
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl i32 2, %c
+  %0 = atomicrmw xor ptr %v, i32 %shl monotonic, align 4
+  %and = and i32 %0, %shl
+  %tobool = icmp ne i32 %and, 0
+  %lnot.ext = zext i1 %tobool to i32
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl1_neq_xor_32_gpr_valnz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_xor_32_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB126_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    xorl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB126_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    incb %cl
+; X86-NOBMI2-NEXT:    movzbl %cl, %edx
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    btl %edx, %eax
+; X86-NOBMI2-NEXT:    setb %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_xor_32_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %esi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB126_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    xorl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB126_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    incb %cl
+; X86-BMI2-NEXT:    shrxl %ecx, %eax, %eax
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_xor_32_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB126_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    xorl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB126_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    incb %cl
+; X64-NOBMI2-NEXT:    movzbl %cl, %edx
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    btl %edx, %eax
+; X64-NOBMI2-NEXT:    setb %cl
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_xor_32_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB126_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB126_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    incb %sil
+; X64-BMI2-NEXT:    shrxl %esi, %eax, %eax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %0 = atomicrmw xor ptr %v, i32 %shl monotonic, align 4
+  %add = add i32 %c, 1
+  %1 = lshr i32 %0, %add
+  %lnot.ext = and i32 %1, 1
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl1_small_mask_xor_32_gpr_valnz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_small_mask_xor_32_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $15, %ecx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB127_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    xorl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB127_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    btl %ecx, %eax
+; X86-NOBMI2-NEXT:    setb %dl
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_small_mask_xor_32_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    andl $15, %ecx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %esi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB127_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    xorl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB127_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    shrxl %ecx, %eax, %eax
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_small_mask_xor_32_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andl $15, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB127_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    xorl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB127_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btl %ecx, %eax
+; X64-NOBMI2-NEXT:    setb %dl
+; X64-NOBMI2-NEXT:    movl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_small_mask_xor_32_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $15, %esi
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB127_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB127_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrxl %esi, %eax, %eax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i32 %c, 15
+  %shl = shl nuw nsw i32 1, %0
+  %1 = atomicrmw xor ptr %v, i32 %shl monotonic, align 4
+  %2 = lshr i32 %1, %0
+  %lnot.ext = and i32 %2, 1
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl1_mask0_xor_32_gpr_valnz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_xor_32_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB128_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    xorl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB128_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    btl %ecx, %eax
+; X86-NOBMI2-NEXT:    setb %dl
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_xor_32_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %esi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB128_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    xorl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB128_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    shrxl %ecx, %eax, %eax
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_xor_32_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB128_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    xorl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB128_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btl %ecx, %eax
+; X64-NOBMI2-NEXT:    setb %dl
+; X64-NOBMI2-NEXT:    movl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_xor_32_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB128_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB128_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrxl %esi, %eax, %eax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i32 %c, 31
+  %shl = shl nuw i32 1, %0
+  %1 = atomicrmw xor ptr %v, i32 %shl monotonic, align 4
+  %2 = lshr i32 %1, %c
+  %lnot.ext = and i32 %2, 1
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl1_mask1_xor_32_gpr_valnz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_xor_32_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB129_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    xorl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB129_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    btl %ecx, %eax
+; X86-NOBMI2-NEXT:    setb %dl
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_xor_32_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %esi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB129_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    xorl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB129_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    shrxl %ecx, %eax, %eax
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_xor_32_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB129_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    xorl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB129_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btl %ecx, %eax
+; X64-NOBMI2-NEXT:    setb %dl
+; X64-NOBMI2-NEXT:    movl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_xor_32_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB129_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB129_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrxl %esi, %eax, %eax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %0 = atomicrmw xor ptr %v, i32 %shl monotonic, align 4
+  %1 = and i32 %c, 31
+  %2 = lshr i32 %0, %1
+  %lnot.ext = and i32 %2, 1
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl1_mask01_xor_32_gpr_valnz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_xor_32_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $31, %ecx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB130_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    xorl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB130_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    btl %ecx, %eax
+; X86-NOBMI2-NEXT:    setb %dl
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_xor_32_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    andl $31, %ecx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %esi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB130_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    xorl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB130_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    shrxl %ecx, %eax, %eax
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_xor_32_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andl $31, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB130_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    xorl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB130_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btl %ecx, %eax
+; X64-NOBMI2-NEXT:    setb %dl
+; X64-NOBMI2-NEXT:    movl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_xor_32_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $31, %esi
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB130_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB130_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrxl %esi, %eax, %eax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i32 %c, 31
+  %shl = shl nuw i32 1, %0
+  %1 = atomicrmw xor ptr %v, i32 %shl monotonic, align 4
+  %2 = lshr i32 %1, %0
+  %lnot.ext = and i32 %2, 1
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_blsi_xor_32_gpr_valnz(ptr %v, i32 %c) {
+; X86-BMI2-LABEL: atomic_blsi_xor_32_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    .cfi_offset %esi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    blsil {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB131_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %esi
+; X86-BMI2-NEXT:    xorl %edx, %esi
+; X86-BMI2-NEXT:    lock cmpxchgl %esi, (%ecx)
+; X86-BMI2-NEXT:    jne .LBB131_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    testl %edx, %eax
+; X86-BMI2-NEXT:    setne %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_xor_32_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    blsil %esi, %edx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB131_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    xorl %edx, %ecx
+; X64-BMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB131_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    testl %edx, %eax
+; X64-BMI2-NEXT:    setne %cl
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %sub = sub i32 0, %c
+  %and = and i32 %sub, %c
+  %0 = atomicrmw xor ptr %v, i32 %and monotonic, align 4
+  %and3 = and i32 %0, %and
+  %tobool = icmp ne i32 %and3, 0
+  %lnot.ext = zext i1 %tobool to i32
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl1_xor_32_gpr_br(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_xor_32_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    andl $31, %edx
+; X86-NOBMI2-NEXT:    lock btcl %edx, (%ecx)
+; X86-NOBMI2-NEXT:    jae .LBB132_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X86-NOBMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB132_1:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_xor_32_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    andl $31, %edx
+; X86-BMI2-NEXT:    lock btcl %edx, (%ecx)
+; X86-BMI2-NEXT:    jae .LBB132_1
+; X86-BMI2-NEXT:  # %bb.2: # %if.then
+; X86-BMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB132_1:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_xor_32_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $31, %eax
+; X64-NOBMI2-NEXT:    lock btcl %eax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB132_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB132_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_xor_32_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $31, %eax
+; X64-BMI2-NEXT:    lock btcl %eax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB132_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB132_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %0 = atomicrmw xor ptr %v, i32 %shl monotonic, align 4
+  %and = and i32 %0, %shl
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %idxprom
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl2_xor_32_gpr_br(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl2_xor_32_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $2, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB133_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    xorl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB133_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    testl %esi, %eax
+; X86-NOBMI2-NEXT:    je .LBB133_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-NOBMI2-NEXT:    jmp .LBB133_5
+; X86-NOBMI2-NEXT:  .LBB133_3:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB133_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl2_xor_32_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $2, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %esi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB133_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    xorl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB133_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    testl %esi, %eax
+; X86-BMI2-NEXT:    je .LBB133_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-BMI2-NEXT:    jmp .LBB133_5
+; X86-BMI2-NEXT:  .LBB133_3:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB133_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl2_xor_32_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $2, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB133_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    xorl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB133_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    testl %edx, %eax
+; X64-NOBMI2-NEXT:    je .LBB133_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB133_3:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl2_xor_32_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $2, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB133_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB133_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    testl %ecx, %eax
+; X64-BMI2-NEXT:    je .LBB133_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB133_3:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl i32 2, %c
+  %0 = atomicrmw xor ptr %v, i32 %shl monotonic, align 4
+  %and = and i32 %0, %shl
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %idxprom
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_neq_xor_32_gpr_br(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_xor_32_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB134_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    xorl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB134_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl %ecx, %ebx
+; X86-NOBMI2-NEXT:    incb %bl
+; X86-NOBMI2-NEXT:    movzbl %bl, %esi
+; X86-NOBMI2-NEXT:    btl %esi, %eax
+; X86-NOBMI2-NEXT:    jae .LBB134_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-NOBMI2-NEXT:    jmp .LBB134_5
+; X86-NOBMI2-NEXT:  .LBB134_3:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB134_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_xor_32_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    .cfi_offset %esi, -16
+; X86-BMI2-NEXT:    .cfi_offset %edi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %esi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB134_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    xorl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB134_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl %ecx, %ebx
+; X86-BMI2-NEXT:    incb %bl
+; X86-BMI2-NEXT:    movzbl %bl, %esi
+; X86-BMI2-NEXT:    btl %esi, %eax
+; X86-BMI2-NEXT:    jae .LBB134_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-BMI2-NEXT:    jmp .LBB134_5
+; X86-BMI2-NEXT:  .LBB134_3:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB134_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_xor_32_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB134_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    xorl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB134_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    leal 1(%rcx), %edx
+; X64-NOBMI2-NEXT:    movzbl %dl, %edx
+; X64-NOBMI2-NEXT:    btl %edx, %eax
+; X64-NOBMI2-NEXT:    jae .LBB134_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB134_3:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_xor_32_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    # kill: def $esi killed $esi def $rsi
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB134_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB134_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    leal 1(%rsi), %ecx
+; X64-BMI2-NEXT:    movzbl %cl, %ecx
+; X64-BMI2-NEXT:    btl %ecx, %eax
+; X64-BMI2-NEXT:    jae .LBB134_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB134_3:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %0 = atomicrmw xor ptr %v, i32 %shl monotonic, align 4
+  %add = add i32 %c, 1
+  %shl1 = shl nuw i32 1, %add
+  %and = and i32 %0, %shl1
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %idxprom
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_small_mask_xor_32_gpr_br(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_small_mask_xor_32_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $15, %ecx
+; X86-NOBMI2-NEXT:    lock btcl %ecx, (%eax)
+; X86-NOBMI2-NEXT:    jae .LBB135_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X86-NOBMI2-NEXT:    movl (%eax,%ecx,4), %eax
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB135_1:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_small_mask_xor_32_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    andl $15, %ecx
+; X86-BMI2-NEXT:    lock btcl %ecx, (%eax)
+; X86-BMI2-NEXT:    jae .LBB135_1
+; X86-BMI2-NEXT:  # %bb.2: # %if.then
+; X86-BMI2-NEXT:    movl (%eax,%ecx,4), %eax
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB135_1:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_small_mask_xor_32_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    andl $15, %esi
+; X64-NOBMI2-NEXT:    lock btcl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB135_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB135_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_small_mask_xor_32_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $15, %esi
+; X64-BMI2-NEXT:    lock btcl %esi, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB135_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB135_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i32 %c, 15
+  %shl = shl nuw nsw i32 1, %0
+  %1 = atomicrmw xor ptr %v, i32 %shl monotonic, align 4
+  %and = and i32 %1, %shl
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %conv2 = zext i32 %0 to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %conv2
+  %2 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %2, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_mask0_xor_32_gpr_br(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_xor_32_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    andl $31, %edx
+; X86-NOBMI2-NEXT:    lock btcl %edx, (%ecx)
+; X86-NOBMI2-NEXT:    jae .LBB136_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X86-NOBMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB136_1:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_xor_32_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    andl $31, %edx
+; X86-BMI2-NEXT:    lock btcl %edx, (%ecx)
+; X86-BMI2-NEXT:    jae .LBB136_1
+; X86-BMI2-NEXT:  # %bb.2: # %if.then
+; X86-BMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB136_1:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_xor_32_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $31, %eax
+; X64-NOBMI2-NEXT:    lock btcl %eax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB136_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB136_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_xor_32_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $31, %eax
+; X64-BMI2-NEXT:    lock btcl %eax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB136_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB136_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i32 %c, 31
+  %shl = shl nuw i32 1, %rem
+  %0 = atomicrmw xor ptr %v, i32 %shl monotonic, align 4
+  %shl1 = shl nuw i32 1, %c
+  %and = and i32 %0, %shl1
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %conv = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %conv
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_mask1_xor_32_gpr_br(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_xor_32_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    andl $31, %edx
+; X86-NOBMI2-NEXT:    lock btcl %edx, (%ecx)
+; X86-NOBMI2-NEXT:    jae .LBB137_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X86-NOBMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB137_1:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_xor_32_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    andl $31, %edx
+; X86-BMI2-NEXT:    lock btcl %edx, (%ecx)
+; X86-BMI2-NEXT:    jae .LBB137_1
+; X86-BMI2-NEXT:  # %bb.2: # %if.then
+; X86-BMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB137_1:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_xor_32_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $31, %eax
+; X64-NOBMI2-NEXT:    lock btcl %eax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB137_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB137_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_xor_32_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $31, %eax
+; X64-BMI2-NEXT:    lock btcl %eax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB137_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB137_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %0 = atomicrmw xor ptr %v, i32 %shl monotonic, align 4
+  %rem = and i32 %c, 31
+  %shl1 = shl nuw i32 1, %rem
+  %and = and i32 %0, %shl1
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %conv = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %conv
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_mask01_xor_32_gpr_br(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_xor_32_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    andl $31, %edx
+; X86-NOBMI2-NEXT:    lock btcl %edx, (%ecx)
+; X86-NOBMI2-NEXT:    jae .LBB138_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X86-NOBMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB138_1:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_xor_32_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    andl $31, %edx
+; X86-BMI2-NEXT:    lock btcl %edx, (%ecx)
+; X86-BMI2-NEXT:    jae .LBB138_1
+; X86-BMI2-NEXT:  # %bb.2: # %if.then
+; X86-BMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB138_1:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_xor_32_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $31, %eax
+; X64-NOBMI2-NEXT:    lock btcl %eax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB138_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB138_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_xor_32_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $31, %eax
+; X64-BMI2-NEXT:    lock btcl %eax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB138_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB138_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i32 %c, 31
+  %shl = shl nuw i32 1, %rem
+  %0 = atomicrmw xor ptr %v, i32 %shl monotonic, align 4
+  %and = and i32 %0, %shl
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %conv = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %conv
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_blsi_xor_32_gpr_br(ptr %v, i32 %c) {
+; X86-BMI2-LABEL: atomic_blsi_xor_32_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    blsil %ecx, %esi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB139_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    xorl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB139_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    testl %esi, %eax
+; X86-BMI2-NEXT:    je .LBB139_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-BMI2-NEXT:    jmp .LBB139_5
+; X86-BMI2-NEXT:  .LBB139_3:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB139_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_xor_32_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    blsil %esi, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB139_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB139_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    testl %ecx, %eax
+; X64-BMI2-NEXT:    je .LBB139_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB139_3:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %sub = sub i32 0, %c
+  %and = and i32 %sub, %c
+  %0 = atomicrmw xor ptr %v, i32 %and monotonic, align 4
+  %and3 = and i32 %0, %and
+  %tobool.not = icmp eq i32 %and3, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %idxprom
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_xor_32_gpr_brz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_xor_32_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    andl $31, %eax
+; X86-NOBMI2-NEXT:    lock btcl %eax, (%edx)
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jae .LBB140_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %return
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB140_1: # %if.then
+; X86-NOBMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_xor_32_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    andl $31, %eax
+; X86-BMI2-NEXT:    lock btcl %eax, (%edx)
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jae .LBB140_1
+; X86-BMI2-NEXT:  # %bb.2: # %return
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB140_1: # %if.then
+; X86-BMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_xor_32_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $31, %eax
+; X64-NOBMI2-NEXT:    lock btcl %eax, (%rdi)
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    jae .LBB140_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB140_1: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_xor_32_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $31, %eax
+; X64-BMI2-NEXT:    lock btcl %eax, (%rdi)
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    jae .LBB140_1
+; X64-BMI2-NEXT:  # %bb.2: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB140_1: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %0 = atomicrmw xor ptr %v, i32 %shl monotonic, align 4
+  %and = and i32 %0, %shl
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %idxprom
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl2_xor_32_gpr_brz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl2_xor_32_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $2, %edi
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB141_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    xorl %edi, %edx
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edx, (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB141_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl $123, %edx
+; X86-NOBMI2-NEXT:    testl %edi, %eax
+; X86-NOBMI2-NEXT:    jne .LBB141_4
+; X86-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X86-NOBMI2-NEXT:    movl (%esi,%ecx,4), %edx
+; X86-NOBMI2-NEXT:  .LBB141_4: # %return
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl2_xor_32_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $2, %eax
+; X86-BMI2-NEXT:    shlxl %edx, %eax, %edi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB141_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ecx
+; X86-BMI2-NEXT:    xorl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchgl %ecx, (%esi)
+; X86-BMI2-NEXT:    jne .LBB141_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl $123, %ecx
+; X86-BMI2-NEXT:    testl %edi, %eax
+; X86-BMI2-NEXT:    jne .LBB141_4
+; X86-BMI2-NEXT:  # %bb.3: # %if.then
+; X86-BMI2-NEXT:    movl (%esi,%edx,4), %ecx
+; X86-BMI2-NEXT:  .LBB141_4: # %return
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl2_xor_32_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $2, %esi
+; X64-NOBMI2-NEXT:    shll %cl, %esi
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB141_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %edx
+; X64-NOBMI2-NEXT:    xorl %esi, %edx
+; X64-NOBMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB141_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movl $123, %edx
+; X64-NOBMI2-NEXT:    testl %esi, %eax
+; X64-NOBMI2-NEXT:    je .LBB141_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %return
+; X64-NOBMI2-NEXT:    movl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB141_3: # %if.then
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %edx
+; X64-NOBMI2-NEXT:    movl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl2_xor_32_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $2, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %edx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB141_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    xorl %edx, %ecx
+; X64-BMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB141_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movl $123, %ecx
+; X64-BMI2-NEXT:    testl %edx, %eax
+; X64-BMI2-NEXT:    je .LBB141_3
+; X64-BMI2-NEXT:  # %bb.4: # %return
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB141_3: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %ecx
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl i32 2, %c
+  %0 = atomicrmw xor ptr %v, i32 %shl monotonic, align 4
+  %and = and i32 %0, %shl
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %idxprom
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_neq_xor_32_gpr_brz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_xor_32_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edx
+; X86-NOBMI2-NEXT:    shll %cl, %edx
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB142_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    xorl %edx, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB142_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl %ecx, %edx
+; X86-NOBMI2-NEXT:    incb %dl
+; X86-NOBMI2-NEXT:    movzbl %dl, %edi
+; X86-NOBMI2-NEXT:    movl $123, %edx
+; X86-NOBMI2-NEXT:    btl %edi, %eax
+; X86-NOBMI2-NEXT:    jb .LBB142_4
+; X86-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X86-NOBMI2-NEXT:    movl (%esi,%ecx,4), %edx
+; X86-NOBMI2-NEXT:  .LBB142_4: # %return
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_xor_32_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %edx, %eax, %ecx
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB142_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    xorl %ecx, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%esi)
+; X86-BMI2-NEXT:    jne .LBB142_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    incb %cl
+; X86-BMI2-NEXT:    movzbl %cl, %edi
+; X86-BMI2-NEXT:    movl $123, %ecx
+; X86-BMI2-NEXT:    btl %edi, %eax
+; X86-BMI2-NEXT:    jb .LBB142_4
+; X86-BMI2-NEXT:  # %bb.3: # %if.then
+; X86-BMI2-NEXT:    movl (%esi,%edx,4), %ecx
+; X86-BMI2-NEXT:  .LBB142_4: # %return
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_xor_32_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB142_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    xorl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB142_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    leal 1(%rcx), %edx
+; X64-NOBMI2-NEXT:    movzbl %dl, %esi
+; X64-NOBMI2-NEXT:    movl $123, %edx
+; X64-NOBMI2-NEXT:    btl %esi, %eax
+; X64-NOBMI2-NEXT:    jae .LBB142_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %return
+; X64-NOBMI2-NEXT:    movl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB142_3: # %if.then
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %edx
+; X64-NOBMI2-NEXT:    movl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_xor_32_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    # kill: def $esi killed $esi def $rsi
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB142_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB142_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    leal 1(%rsi), %ecx
+; X64-BMI2-NEXT:    movzbl %cl, %edx
+; X64-BMI2-NEXT:    movl $123, %ecx
+; X64-BMI2-NEXT:    btl %edx, %eax
+; X64-BMI2-NEXT:    jae .LBB142_3
+; X64-BMI2-NEXT:  # %bb.4: # %return
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB142_3: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %ecx
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %0 = atomicrmw xor ptr %v, i32 %shl monotonic, align 4
+  %add = add i32 %c, 1
+  %shl1 = shl nuw i32 1, %add
+  %and = and i32 %0, %shl1
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %idxprom
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_small_mask_xor_32_gpr_brz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_small_mask_xor_32_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    andl $15, %edx
+; X86-NOBMI2-NEXT:    lock btcl %edx, (%ecx)
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jae .LBB143_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %return
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB143_1: # %if.then
+; X86-NOBMI2-NEXT:    movl (%ecx,%edx,4), %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_small_mask_xor_32_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    andl $15, %edx
+; X86-BMI2-NEXT:    lock btcl %edx, (%ecx)
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jae .LBB143_1
+; X86-BMI2-NEXT:  # %bb.2: # %return
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB143_1: # %if.then
+; X86-BMI2-NEXT:    movl (%ecx,%edx,4), %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_small_mask_xor_32_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    andl $15, %esi
+; X64-NOBMI2-NEXT:    lock btcl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    jae .LBB143_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB143_1: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_small_mask_xor_32_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $15, %esi
+; X64-BMI2-NEXT:    lock btcl %esi, (%rdi)
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    jae .LBB143_1
+; X64-BMI2-NEXT:  # %bb.2: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB143_1: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i32 %c, 15
+  %shl = shl nuw nsw i32 1, %0
+  %1 = atomicrmw xor ptr %v, i32 %shl monotonic, align 4
+  %and = and i32 %1, %shl
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %conv2 = zext i32 %0 to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %conv2
+  %2 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %2, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_mask0_xor_32_gpr_brz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_xor_32_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    andl $31, %eax
+; X86-NOBMI2-NEXT:    lock btcl %eax, (%edx)
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jae .LBB144_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %return
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB144_1: # %if.then
+; X86-NOBMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_xor_32_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    andl $31, %eax
+; X86-BMI2-NEXT:    lock btcl %eax, (%edx)
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jae .LBB144_1
+; X86-BMI2-NEXT:  # %bb.2: # %return
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB144_1: # %if.then
+; X86-BMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_xor_32_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $31, %eax
+; X64-NOBMI2-NEXT:    lock btcl %eax, (%rdi)
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    jae .LBB144_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB144_1: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_xor_32_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $31, %eax
+; X64-BMI2-NEXT:    lock btcl %eax, (%rdi)
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    jae .LBB144_1
+; X64-BMI2-NEXT:  # %bb.2: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB144_1: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i32 %c, 31
+  %shl = shl nuw i32 1, %rem
+  %0 = atomicrmw xor ptr %v, i32 %shl monotonic, align 4
+  %shl1 = shl nuw i32 1, %c
+  %and = and i32 %0, %shl1
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %conv = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %conv
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_mask1_xor_32_gpr_brz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_xor_32_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    andl $31, %eax
+; X86-NOBMI2-NEXT:    lock btcl %eax, (%edx)
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jae .LBB145_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %return
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB145_1: # %if.then
+; X86-NOBMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_xor_32_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    andl $31, %eax
+; X86-BMI2-NEXT:    lock btcl %eax, (%edx)
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jae .LBB145_1
+; X86-BMI2-NEXT:  # %bb.2: # %return
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB145_1: # %if.then
+; X86-BMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_xor_32_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $31, %eax
+; X64-NOBMI2-NEXT:    lock btcl %eax, (%rdi)
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    jae .LBB145_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB145_1: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_xor_32_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $31, %eax
+; X64-BMI2-NEXT:    lock btcl %eax, (%rdi)
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    jae .LBB145_1
+; X64-BMI2-NEXT:  # %bb.2: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB145_1: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %0 = atomicrmw xor ptr %v, i32 %shl monotonic, align 4
+  %rem = and i32 %c, 31
+  %shl1 = shl nuw i32 1, %rem
+  %and = and i32 %0, %shl1
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %conv = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %conv
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_mask01_xor_32_gpr_brz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_xor_32_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    andl $31, %eax
+; X86-NOBMI2-NEXT:    lock btcl %eax, (%edx)
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jae .LBB146_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %return
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB146_1: # %if.then
+; X86-NOBMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_xor_32_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    andl $31, %eax
+; X86-BMI2-NEXT:    lock btcl %eax, (%edx)
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jae .LBB146_1
+; X86-BMI2-NEXT:  # %bb.2: # %return
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB146_1: # %if.then
+; X86-BMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_xor_32_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $31, %eax
+; X64-NOBMI2-NEXT:    lock btcl %eax, (%rdi)
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    jae .LBB146_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB146_1: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_xor_32_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $31, %eax
+; X64-BMI2-NEXT:    lock btcl %eax, (%rdi)
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    jae .LBB146_1
+; X64-BMI2-NEXT:  # %bb.2: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB146_1: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i32 %c, 31
+  %shl = shl nuw i32 1, %rem
+  %0 = atomicrmw xor ptr %v, i32 %shl monotonic, align 4
+  %and = and i32 %0, %shl
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %conv = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %conv
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_blsi_xor_32_gpr_brz(ptr %v, i32 %c) {
+; X86-BMI2-LABEL: atomic_blsi_xor_32_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    blsil %edx, %edi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB147_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ecx
+; X86-BMI2-NEXT:    xorl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchgl %ecx, (%esi)
+; X86-BMI2-NEXT:    jne .LBB147_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl $123, %ecx
+; X86-BMI2-NEXT:    testl %edi, %eax
+; X86-BMI2-NEXT:    jne .LBB147_4
+; X86-BMI2-NEXT:  # %bb.3: # %if.then
+; X86-BMI2-NEXT:    movl (%esi,%edx,4), %ecx
+; X86-BMI2-NEXT:  .LBB147_4: # %return
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_xor_32_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    blsil %esi, %edx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB147_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    xorl %edx, %ecx
+; X64-BMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB147_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movl $123, %ecx
+; X64-BMI2-NEXT:    testl %edx, %eax
+; X64-BMI2-NEXT:    je .LBB147_3
+; X64-BMI2-NEXT:  # %bb.4: # %return
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB147_3: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %ecx
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %sub = sub i32 0, %c
+  %and = and i32 %sub, %c
+  %0 = atomicrmw xor ptr %v, i32 %and monotonic, align 4
+  %and3 = and i32 %0, %and
+  %tobool.not = icmp eq i32 %and3, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %idxprom
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_xor_32_gpr_brnz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_xor_32_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    andl $31, %edx
+; X86-NOBMI2-NEXT:    lock btcl %edx, (%ecx)
+; X86-NOBMI2-NEXT:    jae .LBB148_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X86-NOBMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB148_1:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_xor_32_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    andl $31, %edx
+; X86-BMI2-NEXT:    lock btcl %edx, (%ecx)
+; X86-BMI2-NEXT:    jae .LBB148_1
+; X86-BMI2-NEXT:  # %bb.2: # %if.then
+; X86-BMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB148_1:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_xor_32_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $31, %eax
+; X64-NOBMI2-NEXT:    lock btcl %eax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB148_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB148_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_xor_32_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $31, %eax
+; X64-BMI2-NEXT:    lock btcl %eax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB148_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB148_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %0 = atomicrmw xor ptr %v, i32 %shl monotonic, align 4
+  %and = and i32 %0, %shl
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %idxprom
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl2_xor_32_gpr_brnz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl2_xor_32_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $2, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB149_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    xorl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB149_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    testl %esi, %eax
+; X86-NOBMI2-NEXT:    je .LBB149_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-NOBMI2-NEXT:    jmp .LBB149_5
+; X86-NOBMI2-NEXT:  .LBB149_3:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB149_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl2_xor_32_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $2, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %esi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB149_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    xorl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB149_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    testl %esi, %eax
+; X86-BMI2-NEXT:    je .LBB149_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-BMI2-NEXT:    jmp .LBB149_5
+; X86-BMI2-NEXT:  .LBB149_3:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB149_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl2_xor_32_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $2, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB149_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    xorl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB149_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    testl %edx, %eax
+; X64-NOBMI2-NEXT:    je .LBB149_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB149_3:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl2_xor_32_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $2, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB149_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB149_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    testl %ecx, %eax
+; X64-BMI2-NEXT:    je .LBB149_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB149_3:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl i32 2, %c
+  %0 = atomicrmw xor ptr %v, i32 %shl monotonic, align 4
+  %and = and i32 %0, %shl
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %idxprom
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_neq_xor_32_gpr_brnz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_xor_32_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB150_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    xorl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB150_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl %ecx, %ebx
+; X86-NOBMI2-NEXT:    incb %bl
+; X86-NOBMI2-NEXT:    movzbl %bl, %esi
+; X86-NOBMI2-NEXT:    btl %esi, %eax
+; X86-NOBMI2-NEXT:    jae .LBB150_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-NOBMI2-NEXT:    jmp .LBB150_5
+; X86-NOBMI2-NEXT:  .LBB150_3:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB150_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_xor_32_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    .cfi_offset %esi, -16
+; X86-BMI2-NEXT:    .cfi_offset %edi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %esi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB150_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    xorl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB150_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl %ecx, %ebx
+; X86-BMI2-NEXT:    incb %bl
+; X86-BMI2-NEXT:    movzbl %bl, %esi
+; X86-BMI2-NEXT:    btl %esi, %eax
+; X86-BMI2-NEXT:    jae .LBB150_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-BMI2-NEXT:    jmp .LBB150_5
+; X86-BMI2-NEXT:  .LBB150_3:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB150_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_xor_32_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB150_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    xorl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB150_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    leal 1(%rcx), %edx
+; X64-NOBMI2-NEXT:    movzbl %dl, %edx
+; X64-NOBMI2-NEXT:    btl %edx, %eax
+; X64-NOBMI2-NEXT:    jae .LBB150_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB150_3:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_xor_32_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    # kill: def $esi killed $esi def $rsi
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB150_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB150_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    leal 1(%rsi), %ecx
+; X64-BMI2-NEXT:    movzbl %cl, %ecx
+; X64-BMI2-NEXT:    btl %ecx, %eax
+; X64-BMI2-NEXT:    jae .LBB150_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB150_3:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %0 = atomicrmw xor ptr %v, i32 %shl monotonic, align 4
+  %add = add i32 %c, 1
+  %shl1 = shl nuw i32 1, %add
+  %and = and i32 %0, %shl1
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %idxprom
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_small_mask_xor_32_gpr_brnz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_small_mask_xor_32_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $15, %ecx
+; X86-NOBMI2-NEXT:    lock btcl %ecx, (%eax)
+; X86-NOBMI2-NEXT:    jae .LBB151_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X86-NOBMI2-NEXT:    movl (%eax,%ecx,4), %eax
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB151_1:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_small_mask_xor_32_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    andl $15, %ecx
+; X86-BMI2-NEXT:    lock btcl %ecx, (%eax)
+; X86-BMI2-NEXT:    jae .LBB151_1
+; X86-BMI2-NEXT:  # %bb.2: # %if.then
+; X86-BMI2-NEXT:    movl (%eax,%ecx,4), %eax
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB151_1:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_small_mask_xor_32_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    andl $15, %esi
+; X64-NOBMI2-NEXT:    lock btcl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB151_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB151_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_small_mask_xor_32_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $15, %esi
+; X64-BMI2-NEXT:    lock btcl %esi, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB151_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB151_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i32 %c, 15
+  %shl = shl nuw nsw i32 1, %0
+  %1 = atomicrmw xor ptr %v, i32 %shl monotonic, align 4
+  %and = and i32 %1, %shl
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %conv2 = zext i32 %0 to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %conv2
+  %2 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %2, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_mask0_xor_32_gpr_brnz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_xor_32_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    andl $31, %edx
+; X86-NOBMI2-NEXT:    lock btcl %edx, (%ecx)
+; X86-NOBMI2-NEXT:    jae .LBB152_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X86-NOBMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB152_1:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_xor_32_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    andl $31, %edx
+; X86-BMI2-NEXT:    lock btcl %edx, (%ecx)
+; X86-BMI2-NEXT:    jae .LBB152_1
+; X86-BMI2-NEXT:  # %bb.2: # %if.then
+; X86-BMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB152_1:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_xor_32_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $31, %eax
+; X64-NOBMI2-NEXT:    lock btcl %eax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB152_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB152_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_xor_32_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $31, %eax
+; X64-BMI2-NEXT:    lock btcl %eax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB152_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB152_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i32 %c, 31
+  %shl = shl nuw i32 1, %rem
+  %0 = atomicrmw xor ptr %v, i32 %shl monotonic, align 4
+  %shl1 = shl nuw i32 1, %c
+  %and = and i32 %0, %shl1
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %conv = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %conv
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_mask1_xor_32_gpr_brnz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_xor_32_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    andl $31, %edx
+; X86-NOBMI2-NEXT:    lock btcl %edx, (%ecx)
+; X86-NOBMI2-NEXT:    jae .LBB153_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X86-NOBMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB153_1:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_xor_32_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    andl $31, %edx
+; X86-BMI2-NEXT:    lock btcl %edx, (%ecx)
+; X86-BMI2-NEXT:    jae .LBB153_1
+; X86-BMI2-NEXT:  # %bb.2: # %if.then
+; X86-BMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB153_1:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_xor_32_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $31, %eax
+; X64-NOBMI2-NEXT:    lock btcl %eax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB153_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB153_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_xor_32_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $31, %eax
+; X64-BMI2-NEXT:    lock btcl %eax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB153_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB153_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %0 = atomicrmw xor ptr %v, i32 %shl monotonic, align 4
+  %rem = and i32 %c, 31
+  %shl1 = shl nuw i32 1, %rem
+  %and = and i32 %0, %shl1
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %conv = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %conv
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_mask01_xor_32_gpr_brnz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_xor_32_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    andl $31, %edx
+; X86-NOBMI2-NEXT:    lock btcl %edx, (%ecx)
+; X86-NOBMI2-NEXT:    jae .LBB154_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X86-NOBMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB154_1:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_xor_32_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    andl $31, %edx
+; X86-BMI2-NEXT:    lock btcl %edx, (%ecx)
+; X86-BMI2-NEXT:    jae .LBB154_1
+; X86-BMI2-NEXT:  # %bb.2: # %if.then
+; X86-BMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB154_1:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_xor_32_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $31, %eax
+; X64-NOBMI2-NEXT:    lock btcl %eax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB154_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB154_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_xor_32_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $31, %eax
+; X64-BMI2-NEXT:    lock btcl %eax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB154_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB154_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i32 %c, 31
+  %shl = shl nuw i32 1, %rem
+  %0 = atomicrmw xor ptr %v, i32 %shl monotonic, align 4
+  %and = and i32 %0, %shl
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %conv = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %conv
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_blsi_xor_32_gpr_brnz(ptr %v, i32 %c) {
+; X86-BMI2-LABEL: atomic_blsi_xor_32_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    blsil %ecx, %esi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB155_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    xorl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB155_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    testl %esi, %eax
+; X86-BMI2-NEXT:    je .LBB155_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-BMI2-NEXT:    jmp .LBB155_5
+; X86-BMI2-NEXT:  .LBB155_3:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB155_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_xor_32_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    blsil %esi, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB155_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB155_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    testl %ecx, %eax
+; X64-BMI2-NEXT:    je .LBB155_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB155_3:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %sub = sub i32 0, %c
+  %and = and i32 %sub, %c
+  %0 = atomicrmw xor ptr %v, i32 %and monotonic, align 4
+  %and3 = and i32 %0, %and
+  %tobool.not = icmp eq i32 %and3, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %idxprom
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_or_32_gpr_val(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_or_32_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $31, %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    lock btsl %ecx, (%edx)
+; X86-NOBMI2-NEXT:    setb %al
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    shll %cl, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_or_32_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    andl $31, %ecx
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    lock btsl %ecx, (%eax)
+; X86-BMI2-NEXT:    setb %dl
+; X86-BMI2-NEXT:    shlxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_or_32_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andl $31, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btsl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_or_32_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $31, %esi
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btsl %esi, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %0 = atomicrmw or ptr %v, i32 %shl monotonic, align 4
+  %and = and i32 %0, %shl
+  ret i32 %and
+}
+
+define i32 @atomic_shl2_or_32_gpr_val(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl2_or_32_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl $2, %edx
+; X86-NOBMI2-NEXT:    shll %cl, %edx
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB157_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    orl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB157_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl2_or_32_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    .cfi_offset %esi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl $2, %edx
+; X86-BMI2-NEXT:    shlxl %eax, %edx, %edx
+; X86-BMI2-NEXT:    movl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB157_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %esi
+; X86-BMI2-NEXT:    orl %edx, %esi
+; X86-BMI2-NEXT:    lock cmpxchgl %esi, (%ecx)
+; X86-BMI2-NEXT:    jne .LBB157_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %edx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl2_or_32_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $2, %edx
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB157_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    orl %edx, %ecx
+; X64-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB157_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    andl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl2_or_32_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $2, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB157_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB157_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    andl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl i32 2, %c
+  %0 = atomicrmw or ptr %v, i32 %shl monotonic, align 4
+  %and = and i32 %0, %shl
+  ret i32 %and
+}
+
+define i32 @atomic_shl1_neq_or_32_gpr_val(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_or_32_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB158_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    orl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB158_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    incb %cl
+; X86-NOBMI2-NEXT:    movl $1, %edx
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    shll %cl, %edx
+; X86-NOBMI2-NEXT:    andl %edx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_or_32_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %esi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB158_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    orl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB158_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    incb %cl
+; X86-BMI2-NEXT:    movl $1, %edx
+; X86-BMI2-NEXT:    shlxl %ecx, %edx, %ecx
+; X86-BMI2-NEXT:    andl %ecx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_or_32_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB158_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    orl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB158_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    incb %cl
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    andl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_or_32_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB158_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB158_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    incb %sil
+; X64-BMI2-NEXT:    movl $1, %ecx
+; X64-BMI2-NEXT:    shlxl %esi, %ecx, %ecx
+; X64-BMI2-NEXT:    andl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %0 = atomicrmw or ptr %v, i32 %shl monotonic, align 4
+  %add = add i32 %c, 1
+  %shl1 = shl nuw i32 1, %add
+  %and = and i32 %0, %shl1
+  ret i32 %and
+}
+
+define i32 @atomic_shl1_small_mask_or_32_gpr_val(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_small_mask_or_32_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $15, %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    lock btsl %ecx, (%edx)
+; X86-NOBMI2-NEXT:    setb %al
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    shll %cl, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_small_mask_or_32_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    andl $15, %ecx
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    lock btsl %ecx, (%eax)
+; X86-BMI2-NEXT:    setb %dl
+; X86-BMI2-NEXT:    shlxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_small_mask_or_32_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andl $15, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btsl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_small_mask_or_32_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $15, %esi
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btsl %esi, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i32 %c, 15
+  %shl = shl nuw nsw i32 1, %0
+  %1 = atomicrmw or ptr %v, i32 %shl monotonic, align 4
+  %and = and i32 %1, %shl
+  ret i32 %and
+}
+
+define i32 @atomic_shl1_mask0_or_32_gpr_val(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_or_32_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $31, %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    lock btsl %ecx, (%edx)
+; X86-NOBMI2-NEXT:    setb %al
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    shll %cl, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_or_32_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    andl $31, %ecx
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    lock btsl %ecx, (%eax)
+; X86-BMI2-NEXT:    setb %dl
+; X86-BMI2-NEXT:    shlxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_or_32_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andl $31, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btsl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_or_32_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $31, %esi
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btsl %esi, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i32 %c, 31
+  %shl = shl nuw i32 1, %0
+  %1 = atomicrmw or ptr %v, i32 %shl monotonic, align 4
+  %shl1 = shl nuw i32 1, %c
+  %and = and i32 %1, %shl1
+  ret i32 %and
+}
+
+define i32 @atomic_shl1_mask1_or_32_gpr_val(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_or_32_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $31, %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    lock btsl %ecx, (%edx)
+; X86-NOBMI2-NEXT:    setb %al
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    shll %cl, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_or_32_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    andl $31, %ecx
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    lock btsl %ecx, (%eax)
+; X86-BMI2-NEXT:    setb %dl
+; X86-BMI2-NEXT:    shlxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_or_32_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andl $31, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btsl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_or_32_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $31, %esi
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btsl %esi, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %0 = atomicrmw or ptr %v, i32 %shl monotonic, align 4
+  %1 = and i32 %c, 31
+  %shl1 = shl nuw i32 1, %1
+  %and = and i32 %0, %shl1
+  ret i32 %and
+}
+
+define i32 @atomic_shl1_mask01_or_32_gpr_val(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_or_32_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $31, %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    lock btsl %ecx, (%edx)
+; X86-NOBMI2-NEXT:    setb %al
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    shll %cl, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_or_32_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    andl $31, %ecx
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    lock btsl %ecx, (%eax)
+; X86-BMI2-NEXT:    setb %dl
+; X86-BMI2-NEXT:    shlxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_or_32_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andl $31, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btsl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_or_32_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $31, %esi
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btsl %esi, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i32 %c, 31
+  %shl = shl nuw i32 1, %0
+  %1 = atomicrmw or ptr %v, i32 %shl monotonic, align 4
+  %and = and i32 %1, %shl
+  ret i32 %and
+}
+
+define i32 @atomic_blsi_or_32_gpr_val(ptr %v, i32 %c) {
+; X86-BMI2-LABEL: atomic_blsi_or_32_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    .cfi_offset %esi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    blsil {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB163_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %esi
+; X86-BMI2-NEXT:    orl %ecx, %esi
+; X86-BMI2-NEXT:    lock cmpxchgl %esi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB163_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ecx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_or_32_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    blsil %esi, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB163_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB163_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    andl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %sub = sub i32 0, %c
+  %and = and i32 %sub, %c
+  %0 = atomicrmw or ptr %v, i32 %and monotonic, align 4
+  %and3 = and i32 %0, %and
+  ret i32 %and3
+}
+
+define i32 @atomic_shl1_or_32_gpr_valz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_or_32_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB164_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    orl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB164_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    btl %ecx, %eax
+; X86-NOBMI2-NEXT:    setae %dl
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_or_32_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %edx, %eax, %esi
+; X86-BMI2-NEXT:    movl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB164_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    orl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%ecx)
+; X86-BMI2-NEXT:    jne .LBB164_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    btl %edx, %eax
+; X86-BMI2-NEXT:    setae %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_or_32_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB164_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    orl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB164_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btl %ecx, %eax
+; X64-NOBMI2-NEXT:    setae %dl
+; X64-NOBMI2-NEXT:    movl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_or_32_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB164_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB164_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    btl %esi, %eax
+; X64-BMI2-NEXT:    setae %cl
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %0 = atomicrmw or ptr %v, i32 %shl monotonic, align 4
+  %1 = xor i32 %0, -1
+  %2 = lshr i32 %1, %c
+  %lnot.ext = and i32 %2, 1
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl2_or_32_gpr_valz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl2_or_32_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl $2, %edx
+; X86-NOBMI2-NEXT:    shll %cl, %edx
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB165_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    orl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB165_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    testl %edx, %eax
+; X86-NOBMI2-NEXT:    sete %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl2_or_32_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    .cfi_offset %esi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl $2, %edx
+; X86-BMI2-NEXT:    shlxl %eax, %edx, %edx
+; X86-BMI2-NEXT:    movl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB165_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %esi
+; X86-BMI2-NEXT:    orl %edx, %esi
+; X86-BMI2-NEXT:    lock cmpxchgl %esi, (%ecx)
+; X86-BMI2-NEXT:    jne .LBB165_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    testl %edx, %eax
+; X86-BMI2-NEXT:    sete %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl2_or_32_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $2, %edx
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB165_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    orl %edx, %ecx
+; X64-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB165_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    testl %edx, %eax
+; X64-NOBMI2-NEXT:    sete %cl
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl2_or_32_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $2, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %edx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB165_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    orl %edx, %ecx
+; X64-BMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB165_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    testl %edx, %eax
+; X64-BMI2-NEXT:    sete %cl
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl i32 2, %c
+  %0 = atomicrmw or ptr %v, i32 %shl monotonic, align 4
+  %and = and i32 %0, %shl
+  %tobool.not = icmp eq i32 %and, 0
+  %lnot.ext = zext i1 %tobool.not to i32
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl1_neq_or_32_gpr_valz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_or_32_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB166_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    orl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB166_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    incb %cl
+; X86-NOBMI2-NEXT:    movzbl %cl, %edx
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    btl %edx, %eax
+; X86-NOBMI2-NEXT:    setae %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_or_32_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %esi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB166_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    orl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB166_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    incb %cl
+; X86-BMI2-NEXT:    movzbl %cl, %edx
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    btl %edx, %eax
+; X86-BMI2-NEXT:    setae %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_or_32_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB166_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    orl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB166_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    incb %cl
+; X64-NOBMI2-NEXT:    movzbl %cl, %edx
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    btl %edx, %eax
+; X64-NOBMI2-NEXT:    setae %cl
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_or_32_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB166_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB166_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    incb %sil
+; X64-BMI2-NEXT:    movzbl %sil, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    btl %edx, %eax
+; X64-BMI2-NEXT:    setae %cl
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %0 = atomicrmw or ptr %v, i32 %shl monotonic, align 4
+  %add = add i32 %c, 1
+  %1 = xor i32 %0, -1
+  %2 = lshr i32 %1, %add
+  %lnot.ext = and i32 %2, 1
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl1_small_mask_or_32_gpr_valz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_small_mask_or_32_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $15, %ecx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB167_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    orl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB167_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    btl %ecx, %eax
+; X86-NOBMI2-NEXT:    setae %dl
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_small_mask_or_32_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    andl $15, %edx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %edx, %eax, %esi
+; X86-BMI2-NEXT:    movl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB167_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    orl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%ecx)
+; X86-BMI2-NEXT:    jne .LBB167_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    btl %edx, %eax
+; X86-BMI2-NEXT:    setae %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_small_mask_or_32_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andl $15, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB167_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    orl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB167_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btl %ecx, %eax
+; X64-NOBMI2-NEXT:    setae %dl
+; X64-NOBMI2-NEXT:    movl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_small_mask_or_32_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $15, %esi
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB167_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB167_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    btl %esi, %eax
+; X64-BMI2-NEXT:    setae %cl
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i32 %c, 15
+  %shl = shl nuw nsw i32 1, %0
+  %1 = atomicrmw or ptr %v, i32 %shl monotonic, align 4
+  %2 = xor i32 %1, -1
+  %3 = lshr i32 %2, %0
+  %lnot.ext = and i32 %3, 1
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl1_mask0_or_32_gpr_valz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_or_32_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB168_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    orl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB168_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    btl %ecx, %eax
+; X86-NOBMI2-NEXT:    setae %dl
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_or_32_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %edx, %eax, %esi
+; X86-BMI2-NEXT:    movl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB168_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    orl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%ecx)
+; X86-BMI2-NEXT:    jne .LBB168_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    btl %edx, %eax
+; X86-BMI2-NEXT:    setae %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_or_32_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB168_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    orl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB168_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btl %ecx, %eax
+; X64-NOBMI2-NEXT:    setae %dl
+; X64-NOBMI2-NEXT:    movl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_or_32_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB168_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB168_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    btl %esi, %eax
+; X64-BMI2-NEXT:    setae %cl
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i32 %c, 31
+  %shl = shl nuw i32 1, %0
+  %1 = atomicrmw or ptr %v, i32 %shl monotonic, align 4
+  %2 = xor i32 %1, -1
+  %3 = lshr i32 %2, %c
+  %lnot.ext = and i32 %3, 1
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl1_mask1_or_32_gpr_valz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_or_32_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB169_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    orl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB169_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    btl %ecx, %eax
+; X86-NOBMI2-NEXT:    setae %dl
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_or_32_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %edx, %eax, %esi
+; X86-BMI2-NEXT:    movl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB169_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    orl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%ecx)
+; X86-BMI2-NEXT:    jne .LBB169_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    btl %edx, %eax
+; X86-BMI2-NEXT:    setae %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_or_32_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB169_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    orl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB169_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btl %ecx, %eax
+; X64-NOBMI2-NEXT:    setae %dl
+; X64-NOBMI2-NEXT:    movl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_or_32_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB169_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB169_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    btl %esi, %eax
+; X64-BMI2-NEXT:    setae %cl
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %0 = atomicrmw or ptr %v, i32 %shl monotonic, align 4
+  %1 = and i32 %c, 31
+  %2 = xor i32 %0, -1
+  %3 = lshr i32 %2, %1
+  %lnot.ext = and i32 %3, 1
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl1_mask01_or_32_gpr_valz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_or_32_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $31, %ecx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB170_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    orl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB170_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    btl %ecx, %eax
+; X86-NOBMI2-NEXT:    setae %dl
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_or_32_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    andl $31, %edx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %edx, %eax, %esi
+; X86-BMI2-NEXT:    movl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB170_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    orl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%ecx)
+; X86-BMI2-NEXT:    jne .LBB170_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    btl %edx, %eax
+; X86-BMI2-NEXT:    setae %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_or_32_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andl $31, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB170_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    orl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB170_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btl %ecx, %eax
+; X64-NOBMI2-NEXT:    setae %dl
+; X64-NOBMI2-NEXT:    movl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_or_32_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $31, %esi
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB170_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB170_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    btl %esi, %eax
+; X64-BMI2-NEXT:    setae %cl
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i32 %c, 31
+  %shl = shl nuw i32 1, %0
+  %1 = atomicrmw or ptr %v, i32 %shl monotonic, align 4
+  %2 = xor i32 %1, -1
+  %3 = lshr i32 %2, %0
+  %lnot.ext = and i32 %3, 1
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_blsi_or_32_gpr_valz(ptr %v, i32 %c) {
+; X86-BMI2-LABEL: atomic_blsi_or_32_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    .cfi_offset %esi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    blsil {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB171_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %esi
+; X86-BMI2-NEXT:    orl %edx, %esi
+; X86-BMI2-NEXT:    lock cmpxchgl %esi, (%ecx)
+; X86-BMI2-NEXT:    jne .LBB171_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    testl %edx, %eax
+; X86-BMI2-NEXT:    sete %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_or_32_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    blsil %esi, %edx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB171_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    orl %edx, %ecx
+; X64-BMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB171_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    testl %edx, %eax
+; X64-BMI2-NEXT:    sete %cl
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %sub = sub i32 0, %c
+  %and = and i32 %sub, %c
+  %0 = atomicrmw or ptr %v, i32 %and monotonic, align 4
+  %and3 = and i32 %0, %and
+  %tobool.not = icmp eq i32 %and3, 0
+  %lnot.ext = zext i1 %tobool.not to i32
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl1_or_32_gpr_valnz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_or_32_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB172_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    orl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB172_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    btl %ecx, %eax
+; X86-NOBMI2-NEXT:    setb %dl
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_or_32_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %esi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB172_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    orl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB172_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    shrxl %ecx, %eax, %eax
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_or_32_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB172_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    orl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB172_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btl %ecx, %eax
+; X64-NOBMI2-NEXT:    setb %dl
+; X64-NOBMI2-NEXT:    movl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_or_32_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB172_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB172_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrxl %esi, %eax, %eax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %0 = atomicrmw or ptr %v, i32 %shl monotonic, align 4
+  %1 = lshr i32 %0, %c
+  %lnot.ext = and i32 %1, 1
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl2_or_32_gpr_valnz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl2_or_32_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl $2, %edx
+; X86-NOBMI2-NEXT:    shll %cl, %edx
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB173_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    orl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB173_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    testl %edx, %eax
+; X86-NOBMI2-NEXT:    setne %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl2_or_32_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    .cfi_offset %esi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl $2, %edx
+; X86-BMI2-NEXT:    shlxl %eax, %edx, %edx
+; X86-BMI2-NEXT:    movl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB173_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %esi
+; X86-BMI2-NEXT:    orl %edx, %esi
+; X86-BMI2-NEXT:    lock cmpxchgl %esi, (%ecx)
+; X86-BMI2-NEXT:    jne .LBB173_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    testl %edx, %eax
+; X86-BMI2-NEXT:    setne %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl2_or_32_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $2, %edx
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB173_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    orl %edx, %ecx
+; X64-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB173_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    testl %edx, %eax
+; X64-NOBMI2-NEXT:    setne %cl
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl2_or_32_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $2, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %edx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB173_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    orl %edx, %ecx
+; X64-BMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB173_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    testl %edx, %eax
+; X64-BMI2-NEXT:    setne %cl
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl i32 2, %c
+  %0 = atomicrmw or ptr %v, i32 %shl monotonic, align 4
+  %and = and i32 %0, %shl
+  %tobool = icmp ne i32 %and, 0
+  %lnot.ext = zext i1 %tobool to i32
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl1_neq_or_32_gpr_valnz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_or_32_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB174_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    orl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB174_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    incb %cl
+; X86-NOBMI2-NEXT:    movzbl %cl, %edx
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    btl %edx, %eax
+; X86-NOBMI2-NEXT:    setb %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_or_32_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %esi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB174_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    orl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB174_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    incb %cl
+; X86-BMI2-NEXT:    shrxl %ecx, %eax, %eax
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_or_32_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB174_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    orl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB174_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    incb %cl
+; X64-NOBMI2-NEXT:    movzbl %cl, %edx
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    btl %edx, %eax
+; X64-NOBMI2-NEXT:    setb %cl
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_or_32_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB174_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB174_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    incb %sil
+; X64-BMI2-NEXT:    shrxl %esi, %eax, %eax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %0 = atomicrmw or ptr %v, i32 %shl monotonic, align 4
+  %add = add i32 %c, 1
+  %1 = lshr i32 %0, %add
+  %lnot.ext = and i32 %1, 1
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl1_small_mask_or_32_gpr_valnz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_small_mask_or_32_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $15, %ecx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB175_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    orl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB175_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    btl %ecx, %eax
+; X86-NOBMI2-NEXT:    setb %dl
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_small_mask_or_32_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    andl $15, %ecx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %esi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB175_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    orl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB175_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    shrxl %ecx, %eax, %eax
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_small_mask_or_32_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andl $15, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB175_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    orl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB175_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btl %ecx, %eax
+; X64-NOBMI2-NEXT:    setb %dl
+; X64-NOBMI2-NEXT:    movl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_small_mask_or_32_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $15, %esi
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB175_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB175_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrxl %esi, %eax, %eax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i32 %c, 15
+  %shl = shl nuw nsw i32 1, %0
+  %1 = atomicrmw or ptr %v, i32 %shl monotonic, align 4
+  %2 = lshr i32 %1, %0
+  %lnot.ext = and i32 %2, 1
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl1_mask0_or_32_gpr_valnz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_or_32_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB176_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    orl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB176_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    btl %ecx, %eax
+; X86-NOBMI2-NEXT:    setb %dl
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_or_32_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %esi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB176_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    orl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB176_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    shrxl %ecx, %eax, %eax
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_or_32_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB176_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    orl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB176_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btl %ecx, %eax
+; X64-NOBMI2-NEXT:    setb %dl
+; X64-NOBMI2-NEXT:    movl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_or_32_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB176_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB176_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrxl %esi, %eax, %eax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i32 %c, 31
+  %shl = shl nuw i32 1, %0
+  %1 = atomicrmw or ptr %v, i32 %shl monotonic, align 4
+  %2 = lshr i32 %1, %c
+  %lnot.ext = and i32 %2, 1
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl1_mask1_or_32_gpr_valnz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_or_32_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB177_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    orl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB177_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    btl %ecx, %eax
+; X86-NOBMI2-NEXT:    setb %dl
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_or_32_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %esi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB177_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    orl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB177_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    shrxl %ecx, %eax, %eax
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_or_32_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB177_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    orl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB177_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btl %ecx, %eax
+; X64-NOBMI2-NEXT:    setb %dl
+; X64-NOBMI2-NEXT:    movl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_or_32_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB177_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB177_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrxl %esi, %eax, %eax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %0 = atomicrmw or ptr %v, i32 %shl monotonic, align 4
+  %1 = and i32 %c, 31
+  %2 = lshr i32 %0, %1
+  %lnot.ext = and i32 %2, 1
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl1_mask01_or_32_gpr_valnz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_or_32_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $31, %ecx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB178_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    orl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB178_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    btl %ecx, %eax
+; X86-NOBMI2-NEXT:    setb %dl
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_or_32_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    andl $31, %ecx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %esi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB178_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    orl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB178_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    shrxl %ecx, %eax, %eax
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_or_32_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andl $31, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB178_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    orl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB178_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btl %ecx, %eax
+; X64-NOBMI2-NEXT:    setb %dl
+; X64-NOBMI2-NEXT:    movl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_or_32_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $31, %esi
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB178_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB178_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrxl %esi, %eax, %eax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i32 %c, 31
+  %shl = shl nuw i32 1, %0
+  %1 = atomicrmw or ptr %v, i32 %shl monotonic, align 4
+  %2 = lshr i32 %1, %0
+  %lnot.ext = and i32 %2, 1
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_blsi_or_32_gpr_valnz(ptr %v, i32 %c) {
+; X86-BMI2-LABEL: atomic_blsi_or_32_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    .cfi_offset %esi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    blsil {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB179_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %esi
+; X86-BMI2-NEXT:    orl %edx, %esi
+; X86-BMI2-NEXT:    lock cmpxchgl %esi, (%ecx)
+; X86-BMI2-NEXT:    jne .LBB179_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    testl %edx, %eax
+; X86-BMI2-NEXT:    setne %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_or_32_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    blsil %esi, %edx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB179_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    orl %edx, %ecx
+; X64-BMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB179_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    testl %edx, %eax
+; X64-BMI2-NEXT:    setne %cl
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %sub = sub i32 0, %c
+  %and = and i32 %sub, %c
+  %0 = atomicrmw or ptr %v, i32 %and monotonic, align 4
+  %and3 = and i32 %0, %and
+  %tobool = icmp ne i32 %and3, 0
+  %lnot.ext = zext i1 %tobool to i32
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl1_or_32_gpr_br(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_or_32_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    andl $31, %edx
+; X86-NOBMI2-NEXT:    lock btsl %edx, (%ecx)
+; X86-NOBMI2-NEXT:    jae .LBB180_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X86-NOBMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB180_1:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_or_32_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    andl $31, %edx
+; X86-BMI2-NEXT:    lock btsl %edx, (%ecx)
+; X86-BMI2-NEXT:    jae .LBB180_1
+; X86-BMI2-NEXT:  # %bb.2: # %if.then
+; X86-BMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB180_1:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_or_32_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $31, %eax
+; X64-NOBMI2-NEXT:    lock btsl %eax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB180_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB180_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_or_32_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $31, %eax
+; X64-BMI2-NEXT:    lock btsl %eax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB180_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB180_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %0 = atomicrmw or ptr %v, i32 %shl monotonic, align 4
+  %and = and i32 %0, %shl
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %idxprom
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl2_or_32_gpr_br(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl2_or_32_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $2, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB181_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    orl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB181_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    testl %esi, %eax
+; X86-NOBMI2-NEXT:    je .LBB181_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-NOBMI2-NEXT:    jmp .LBB181_5
+; X86-NOBMI2-NEXT:  .LBB181_3:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB181_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl2_or_32_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $2, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %esi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB181_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    orl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB181_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    testl %esi, %eax
+; X86-BMI2-NEXT:    je .LBB181_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-BMI2-NEXT:    jmp .LBB181_5
+; X86-BMI2-NEXT:  .LBB181_3:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB181_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl2_or_32_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $2, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB181_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    orl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB181_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    testl %edx, %eax
+; X64-NOBMI2-NEXT:    je .LBB181_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB181_3:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl2_or_32_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $2, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB181_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB181_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    testl %ecx, %eax
+; X64-BMI2-NEXT:    je .LBB181_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB181_3:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl i32 2, %c
+  %0 = atomicrmw or ptr %v, i32 %shl monotonic, align 4
+  %and = and i32 %0, %shl
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %idxprom
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_neq_or_32_gpr_br(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_or_32_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB182_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    orl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB182_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl %ecx, %ebx
+; X86-NOBMI2-NEXT:    incb %bl
+; X86-NOBMI2-NEXT:    movzbl %bl, %esi
+; X86-NOBMI2-NEXT:    btl %esi, %eax
+; X86-NOBMI2-NEXT:    jae .LBB182_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-NOBMI2-NEXT:    jmp .LBB182_5
+; X86-NOBMI2-NEXT:  .LBB182_3:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB182_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_or_32_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    .cfi_offset %esi, -16
+; X86-BMI2-NEXT:    .cfi_offset %edi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %esi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB182_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    orl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB182_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl %ecx, %ebx
+; X86-BMI2-NEXT:    incb %bl
+; X86-BMI2-NEXT:    movzbl %bl, %esi
+; X86-BMI2-NEXT:    btl %esi, %eax
+; X86-BMI2-NEXT:    jae .LBB182_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-BMI2-NEXT:    jmp .LBB182_5
+; X86-BMI2-NEXT:  .LBB182_3:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB182_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_or_32_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB182_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    orl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB182_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    leal 1(%rcx), %edx
+; X64-NOBMI2-NEXT:    movzbl %dl, %edx
+; X64-NOBMI2-NEXT:    btl %edx, %eax
+; X64-NOBMI2-NEXT:    jae .LBB182_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB182_3:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_or_32_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    # kill: def $esi killed $esi def $rsi
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB182_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB182_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    leal 1(%rsi), %ecx
+; X64-BMI2-NEXT:    movzbl %cl, %ecx
+; X64-BMI2-NEXT:    btl %ecx, %eax
+; X64-BMI2-NEXT:    jae .LBB182_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB182_3:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %0 = atomicrmw or ptr %v, i32 %shl monotonic, align 4
+  %add = add i32 %c, 1
+  %shl1 = shl nuw i32 1, %add
+  %and = and i32 %0, %shl1
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %idxprom
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_small_mask_or_32_gpr_br(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_small_mask_or_32_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $15, %ecx
+; X86-NOBMI2-NEXT:    lock btsl %ecx, (%eax)
+; X86-NOBMI2-NEXT:    jae .LBB183_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X86-NOBMI2-NEXT:    movl (%eax,%ecx,4), %eax
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB183_1:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_small_mask_or_32_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    andl $15, %ecx
+; X86-BMI2-NEXT:    lock btsl %ecx, (%eax)
+; X86-BMI2-NEXT:    jae .LBB183_1
+; X86-BMI2-NEXT:  # %bb.2: # %if.then
+; X86-BMI2-NEXT:    movl (%eax,%ecx,4), %eax
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB183_1:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_small_mask_or_32_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    andl $15, %esi
+; X64-NOBMI2-NEXT:    lock btsl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB183_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB183_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_small_mask_or_32_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $15, %esi
+; X64-BMI2-NEXT:    lock btsl %esi, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB183_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB183_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i32 %c, 15
+  %shl = shl nuw nsw i32 1, %0
+  %1 = atomicrmw or ptr %v, i32 %shl monotonic, align 4
+  %and = and i32 %1, %shl
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %conv2 = zext i32 %0 to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %conv2
+  %2 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %2, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_mask0_or_32_gpr_br(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_or_32_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    andl $31, %edx
+; X86-NOBMI2-NEXT:    lock btsl %edx, (%ecx)
+; X86-NOBMI2-NEXT:    jae .LBB184_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X86-NOBMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB184_1:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_or_32_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    andl $31, %edx
+; X86-BMI2-NEXT:    lock btsl %edx, (%ecx)
+; X86-BMI2-NEXT:    jae .LBB184_1
+; X86-BMI2-NEXT:  # %bb.2: # %if.then
+; X86-BMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB184_1:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_or_32_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $31, %eax
+; X64-NOBMI2-NEXT:    lock btsl %eax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB184_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB184_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_or_32_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $31, %eax
+; X64-BMI2-NEXT:    lock btsl %eax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB184_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB184_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i32 %c, 31
+  %shl = shl nuw i32 1, %rem
+  %0 = atomicrmw or ptr %v, i32 %shl monotonic, align 4
+  %shl1 = shl nuw i32 1, %c
+  %and = and i32 %0, %shl1
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %conv = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %conv
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_mask1_or_32_gpr_br(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_or_32_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    andl $31, %edx
+; X86-NOBMI2-NEXT:    lock btsl %edx, (%ecx)
+; X86-NOBMI2-NEXT:    jae .LBB185_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X86-NOBMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB185_1:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_or_32_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    andl $31, %edx
+; X86-BMI2-NEXT:    lock btsl %edx, (%ecx)
+; X86-BMI2-NEXT:    jae .LBB185_1
+; X86-BMI2-NEXT:  # %bb.2: # %if.then
+; X86-BMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB185_1:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_or_32_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $31, %eax
+; X64-NOBMI2-NEXT:    lock btsl %eax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB185_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB185_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_or_32_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $31, %eax
+; X64-BMI2-NEXT:    lock btsl %eax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB185_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB185_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %0 = atomicrmw or ptr %v, i32 %shl monotonic, align 4
+  %rem = and i32 %c, 31
+  %shl1 = shl nuw i32 1, %rem
+  %and = and i32 %0, %shl1
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %conv = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %conv
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_mask01_or_32_gpr_br(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_or_32_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    andl $31, %edx
+; X86-NOBMI2-NEXT:    lock btsl %edx, (%ecx)
+; X86-NOBMI2-NEXT:    jae .LBB186_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X86-NOBMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB186_1:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_or_32_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    andl $31, %edx
+; X86-BMI2-NEXT:    lock btsl %edx, (%ecx)
+; X86-BMI2-NEXT:    jae .LBB186_1
+; X86-BMI2-NEXT:  # %bb.2: # %if.then
+; X86-BMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB186_1:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_or_32_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $31, %eax
+; X64-NOBMI2-NEXT:    lock btsl %eax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB186_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB186_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_or_32_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $31, %eax
+; X64-BMI2-NEXT:    lock btsl %eax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB186_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB186_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i32 %c, 31
+  %shl = shl nuw i32 1, %rem
+  %0 = atomicrmw or ptr %v, i32 %shl monotonic, align 4
+  %and = and i32 %0, %shl
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %conv = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %conv
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_blsi_or_32_gpr_br(ptr %v, i32 %c) {
+; X86-BMI2-LABEL: atomic_blsi_or_32_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    blsil %ecx, %esi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB187_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    orl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB187_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    testl %esi, %eax
+; X86-BMI2-NEXT:    je .LBB187_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-BMI2-NEXT:    jmp .LBB187_5
+; X86-BMI2-NEXT:  .LBB187_3:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB187_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_or_32_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    blsil %esi, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB187_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB187_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    testl %ecx, %eax
+; X64-BMI2-NEXT:    je .LBB187_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB187_3:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %sub = sub i32 0, %c
+  %and = and i32 %sub, %c
+  %0 = atomicrmw or ptr %v, i32 %and monotonic, align 4
+  %and3 = and i32 %0, %and
+  %tobool.not = icmp eq i32 %and3, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %idxprom
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_or_32_gpr_brz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_or_32_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    andl $31, %eax
+; X86-NOBMI2-NEXT:    lock btsl %eax, (%edx)
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jae .LBB188_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %return
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB188_1: # %if.then
+; X86-NOBMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_or_32_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    andl $31, %eax
+; X86-BMI2-NEXT:    lock btsl %eax, (%edx)
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jae .LBB188_1
+; X86-BMI2-NEXT:  # %bb.2: # %return
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB188_1: # %if.then
+; X86-BMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_or_32_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $31, %eax
+; X64-NOBMI2-NEXT:    lock btsl %eax, (%rdi)
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    jae .LBB188_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB188_1: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_or_32_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $31, %eax
+; X64-BMI2-NEXT:    lock btsl %eax, (%rdi)
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    jae .LBB188_1
+; X64-BMI2-NEXT:  # %bb.2: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB188_1: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %0 = atomicrmw or ptr %v, i32 %shl monotonic, align 4
+  %and = and i32 %0, %shl
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %idxprom
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl2_or_32_gpr_brz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl2_or_32_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $2, %edi
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB189_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    orl %edi, %edx
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edx, (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB189_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl $123, %edx
+; X86-NOBMI2-NEXT:    testl %edi, %eax
+; X86-NOBMI2-NEXT:    jne .LBB189_4
+; X86-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X86-NOBMI2-NEXT:    movl (%esi,%ecx,4), %edx
+; X86-NOBMI2-NEXT:  .LBB189_4: # %return
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl2_or_32_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $2, %eax
+; X86-BMI2-NEXT:    shlxl %edx, %eax, %edi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB189_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ecx
+; X86-BMI2-NEXT:    orl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchgl %ecx, (%esi)
+; X86-BMI2-NEXT:    jne .LBB189_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl $123, %ecx
+; X86-BMI2-NEXT:    testl %edi, %eax
+; X86-BMI2-NEXT:    jne .LBB189_4
+; X86-BMI2-NEXT:  # %bb.3: # %if.then
+; X86-BMI2-NEXT:    movl (%esi,%edx,4), %ecx
+; X86-BMI2-NEXT:  .LBB189_4: # %return
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl2_or_32_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $2, %esi
+; X64-NOBMI2-NEXT:    shll %cl, %esi
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB189_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %edx
+; X64-NOBMI2-NEXT:    orl %esi, %edx
+; X64-NOBMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB189_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movl $123, %edx
+; X64-NOBMI2-NEXT:    testl %esi, %eax
+; X64-NOBMI2-NEXT:    je .LBB189_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %return
+; X64-NOBMI2-NEXT:    movl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB189_3: # %if.then
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %edx
+; X64-NOBMI2-NEXT:    movl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl2_or_32_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $2, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %edx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB189_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    orl %edx, %ecx
+; X64-BMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB189_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movl $123, %ecx
+; X64-BMI2-NEXT:    testl %edx, %eax
+; X64-BMI2-NEXT:    je .LBB189_3
+; X64-BMI2-NEXT:  # %bb.4: # %return
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB189_3: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %ecx
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl i32 2, %c
+  %0 = atomicrmw or ptr %v, i32 %shl monotonic, align 4
+  %and = and i32 %0, %shl
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %idxprom
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_neq_or_32_gpr_brz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_or_32_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edx
+; X86-NOBMI2-NEXT:    shll %cl, %edx
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB190_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    orl %edx, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB190_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl %ecx, %edx
+; X86-NOBMI2-NEXT:    incb %dl
+; X86-NOBMI2-NEXT:    movzbl %dl, %edi
+; X86-NOBMI2-NEXT:    movl $123, %edx
+; X86-NOBMI2-NEXT:    btl %edi, %eax
+; X86-NOBMI2-NEXT:    jb .LBB190_4
+; X86-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X86-NOBMI2-NEXT:    movl (%esi,%ecx,4), %edx
+; X86-NOBMI2-NEXT:  .LBB190_4: # %return
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_or_32_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %edx, %eax, %ecx
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB190_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    orl %ecx, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%esi)
+; X86-BMI2-NEXT:    jne .LBB190_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    incb %cl
+; X86-BMI2-NEXT:    movzbl %cl, %edi
+; X86-BMI2-NEXT:    movl $123, %ecx
+; X86-BMI2-NEXT:    btl %edi, %eax
+; X86-BMI2-NEXT:    jb .LBB190_4
+; X86-BMI2-NEXT:  # %bb.3: # %if.then
+; X86-BMI2-NEXT:    movl (%esi,%edx,4), %ecx
+; X86-BMI2-NEXT:  .LBB190_4: # %return
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_or_32_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB190_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    orl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB190_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    leal 1(%rcx), %edx
+; X64-NOBMI2-NEXT:    movzbl %dl, %esi
+; X64-NOBMI2-NEXT:    movl $123, %edx
+; X64-NOBMI2-NEXT:    btl %esi, %eax
+; X64-NOBMI2-NEXT:    jae .LBB190_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %return
+; X64-NOBMI2-NEXT:    movl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB190_3: # %if.then
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %edx
+; X64-NOBMI2-NEXT:    movl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_or_32_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    # kill: def $esi killed $esi def $rsi
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB190_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB190_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    leal 1(%rsi), %ecx
+; X64-BMI2-NEXT:    movzbl %cl, %edx
+; X64-BMI2-NEXT:    movl $123, %ecx
+; X64-BMI2-NEXT:    btl %edx, %eax
+; X64-BMI2-NEXT:    jae .LBB190_3
+; X64-BMI2-NEXT:  # %bb.4: # %return
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB190_3: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %ecx
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %0 = atomicrmw or ptr %v, i32 %shl monotonic, align 4
+  %add = add i32 %c, 1
+  %shl1 = shl nuw i32 1, %add
+  %and = and i32 %0, %shl1
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %idxprom
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_small_mask_or_32_gpr_brz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_small_mask_or_32_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    andl $15, %edx
+; X86-NOBMI2-NEXT:    lock btsl %edx, (%ecx)
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jae .LBB191_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %return
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB191_1: # %if.then
+; X86-NOBMI2-NEXT:    movl (%ecx,%edx,4), %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_small_mask_or_32_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    andl $15, %edx
+; X86-BMI2-NEXT:    lock btsl %edx, (%ecx)
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jae .LBB191_1
+; X86-BMI2-NEXT:  # %bb.2: # %return
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB191_1: # %if.then
+; X86-BMI2-NEXT:    movl (%ecx,%edx,4), %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_small_mask_or_32_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    andl $15, %esi
+; X64-NOBMI2-NEXT:    lock btsl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    jae .LBB191_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB191_1: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_small_mask_or_32_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $15, %esi
+; X64-BMI2-NEXT:    lock btsl %esi, (%rdi)
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    jae .LBB191_1
+; X64-BMI2-NEXT:  # %bb.2: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB191_1: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i32 %c, 15
+  %shl = shl nuw nsw i32 1, %0
+  %1 = atomicrmw or ptr %v, i32 %shl monotonic, align 4
+  %and = and i32 %1, %shl
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %conv2 = zext i32 %0 to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %conv2
+  %2 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %2, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_mask0_or_32_gpr_brz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_or_32_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    andl $31, %eax
+; X86-NOBMI2-NEXT:    lock btsl %eax, (%edx)
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jae .LBB192_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %return
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB192_1: # %if.then
+; X86-NOBMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_or_32_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    andl $31, %eax
+; X86-BMI2-NEXT:    lock btsl %eax, (%edx)
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jae .LBB192_1
+; X86-BMI2-NEXT:  # %bb.2: # %return
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB192_1: # %if.then
+; X86-BMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_or_32_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $31, %eax
+; X64-NOBMI2-NEXT:    lock btsl %eax, (%rdi)
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    jae .LBB192_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB192_1: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_or_32_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $31, %eax
+; X64-BMI2-NEXT:    lock btsl %eax, (%rdi)
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    jae .LBB192_1
+; X64-BMI2-NEXT:  # %bb.2: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB192_1: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i32 %c, 31
+  %shl = shl nuw i32 1, %rem
+  %0 = atomicrmw or ptr %v, i32 %shl monotonic, align 4
+  %shl1 = shl nuw i32 1, %c
+  %and = and i32 %0, %shl1
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %conv = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %conv
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_mask1_or_32_gpr_brz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_or_32_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    andl $31, %eax
+; X86-NOBMI2-NEXT:    lock btsl %eax, (%edx)
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jae .LBB193_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %return
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB193_1: # %if.then
+; X86-NOBMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_or_32_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    andl $31, %eax
+; X86-BMI2-NEXT:    lock btsl %eax, (%edx)
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jae .LBB193_1
+; X86-BMI2-NEXT:  # %bb.2: # %return
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB193_1: # %if.then
+; X86-BMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_or_32_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $31, %eax
+; X64-NOBMI2-NEXT:    lock btsl %eax, (%rdi)
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    jae .LBB193_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB193_1: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_or_32_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $31, %eax
+; X64-BMI2-NEXT:    lock btsl %eax, (%rdi)
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    jae .LBB193_1
+; X64-BMI2-NEXT:  # %bb.2: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB193_1: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %0 = atomicrmw or ptr %v, i32 %shl monotonic, align 4
+  %rem = and i32 %c, 31
+  %shl1 = shl nuw i32 1, %rem
+  %and = and i32 %0, %shl1
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %conv = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %conv
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_mask01_or_32_gpr_brz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_or_32_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    andl $31, %eax
+; X86-NOBMI2-NEXT:    lock btsl %eax, (%edx)
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jae .LBB194_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %return
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB194_1: # %if.then
+; X86-NOBMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_or_32_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    andl $31, %eax
+; X86-BMI2-NEXT:    lock btsl %eax, (%edx)
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jae .LBB194_1
+; X86-BMI2-NEXT:  # %bb.2: # %return
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB194_1: # %if.then
+; X86-BMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_or_32_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $31, %eax
+; X64-NOBMI2-NEXT:    lock btsl %eax, (%rdi)
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    jae .LBB194_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB194_1: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_or_32_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $31, %eax
+; X64-BMI2-NEXT:    lock btsl %eax, (%rdi)
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    jae .LBB194_1
+; X64-BMI2-NEXT:  # %bb.2: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB194_1: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i32 %c, 31
+  %shl = shl nuw i32 1, %rem
+  %0 = atomicrmw or ptr %v, i32 %shl monotonic, align 4
+  %and = and i32 %0, %shl
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %conv = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %conv
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_blsi_or_32_gpr_brz(ptr %v, i32 %c) {
+; X86-BMI2-LABEL: atomic_blsi_or_32_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    blsil %edx, %edi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB195_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ecx
+; X86-BMI2-NEXT:    orl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchgl %ecx, (%esi)
+; X86-BMI2-NEXT:    jne .LBB195_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl $123, %ecx
+; X86-BMI2-NEXT:    testl %edi, %eax
+; X86-BMI2-NEXT:    jne .LBB195_4
+; X86-BMI2-NEXT:  # %bb.3: # %if.then
+; X86-BMI2-NEXT:    movl (%esi,%edx,4), %ecx
+; X86-BMI2-NEXT:  .LBB195_4: # %return
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_or_32_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    blsil %esi, %edx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB195_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    orl %edx, %ecx
+; X64-BMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB195_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movl $123, %ecx
+; X64-BMI2-NEXT:    testl %edx, %eax
+; X64-BMI2-NEXT:    je .LBB195_3
+; X64-BMI2-NEXT:  # %bb.4: # %return
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB195_3: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %ecx
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %sub = sub i32 0, %c
+  %and = and i32 %sub, %c
+  %0 = atomicrmw or ptr %v, i32 %and monotonic, align 4
+  %and3 = and i32 %0, %and
+  %tobool.not = icmp eq i32 %and3, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %idxprom
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_or_32_gpr_brnz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_or_32_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    andl $31, %edx
+; X86-NOBMI2-NEXT:    lock btsl %edx, (%ecx)
+; X86-NOBMI2-NEXT:    jae .LBB196_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X86-NOBMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB196_1:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_or_32_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    andl $31, %edx
+; X86-BMI2-NEXT:    lock btsl %edx, (%ecx)
+; X86-BMI2-NEXT:    jae .LBB196_1
+; X86-BMI2-NEXT:  # %bb.2: # %if.then
+; X86-BMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB196_1:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_or_32_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $31, %eax
+; X64-NOBMI2-NEXT:    lock btsl %eax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB196_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB196_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_or_32_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $31, %eax
+; X64-BMI2-NEXT:    lock btsl %eax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB196_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB196_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %0 = atomicrmw or ptr %v, i32 %shl monotonic, align 4
+  %and = and i32 %0, %shl
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %idxprom
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl2_or_32_gpr_brnz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl2_or_32_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $2, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB197_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    orl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB197_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    testl %esi, %eax
+; X86-NOBMI2-NEXT:    je .LBB197_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-NOBMI2-NEXT:    jmp .LBB197_5
+; X86-NOBMI2-NEXT:  .LBB197_3:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB197_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl2_or_32_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $2, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %esi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB197_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    orl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB197_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    testl %esi, %eax
+; X86-BMI2-NEXT:    je .LBB197_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-BMI2-NEXT:    jmp .LBB197_5
+; X86-BMI2-NEXT:  .LBB197_3:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB197_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl2_or_32_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $2, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB197_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    orl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB197_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    testl %edx, %eax
+; X64-NOBMI2-NEXT:    je .LBB197_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB197_3:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl2_or_32_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $2, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB197_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB197_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    testl %ecx, %eax
+; X64-BMI2-NEXT:    je .LBB197_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB197_3:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl i32 2, %c
+  %0 = atomicrmw or ptr %v, i32 %shl monotonic, align 4
+  %and = and i32 %0, %shl
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %idxprom
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_neq_or_32_gpr_brnz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_or_32_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB198_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    orl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB198_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl %ecx, %ebx
+; X86-NOBMI2-NEXT:    incb %bl
+; X86-NOBMI2-NEXT:    movzbl %bl, %esi
+; X86-NOBMI2-NEXT:    btl %esi, %eax
+; X86-NOBMI2-NEXT:    jae .LBB198_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-NOBMI2-NEXT:    jmp .LBB198_5
+; X86-NOBMI2-NEXT:  .LBB198_3:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB198_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_or_32_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    .cfi_offset %esi, -16
+; X86-BMI2-NEXT:    .cfi_offset %edi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %esi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB198_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    orl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB198_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl %ecx, %ebx
+; X86-BMI2-NEXT:    incb %bl
+; X86-BMI2-NEXT:    movzbl %bl, %esi
+; X86-BMI2-NEXT:    btl %esi, %eax
+; X86-BMI2-NEXT:    jae .LBB198_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-BMI2-NEXT:    jmp .LBB198_5
+; X86-BMI2-NEXT:  .LBB198_3:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB198_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_or_32_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB198_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    orl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB198_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    leal 1(%rcx), %edx
+; X64-NOBMI2-NEXT:    movzbl %dl, %edx
+; X64-NOBMI2-NEXT:    btl %edx, %eax
+; X64-NOBMI2-NEXT:    jae .LBB198_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB198_3:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_or_32_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    # kill: def $esi killed $esi def $rsi
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB198_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB198_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    leal 1(%rsi), %ecx
+; X64-BMI2-NEXT:    movzbl %cl, %ecx
+; X64-BMI2-NEXT:    btl %ecx, %eax
+; X64-BMI2-NEXT:    jae .LBB198_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB198_3:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %0 = atomicrmw or ptr %v, i32 %shl monotonic, align 4
+  %add = add i32 %c, 1
+  %shl1 = shl nuw i32 1, %add
+  %and = and i32 %0, %shl1
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %idxprom
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_small_mask_or_32_gpr_brnz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_small_mask_or_32_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $15, %ecx
+; X86-NOBMI2-NEXT:    lock btsl %ecx, (%eax)
+; X86-NOBMI2-NEXT:    jae .LBB199_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X86-NOBMI2-NEXT:    movl (%eax,%ecx,4), %eax
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB199_1:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_small_mask_or_32_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    andl $15, %ecx
+; X86-BMI2-NEXT:    lock btsl %ecx, (%eax)
+; X86-BMI2-NEXT:    jae .LBB199_1
+; X86-BMI2-NEXT:  # %bb.2: # %if.then
+; X86-BMI2-NEXT:    movl (%eax,%ecx,4), %eax
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB199_1:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_small_mask_or_32_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    andl $15, %esi
+; X64-NOBMI2-NEXT:    lock btsl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB199_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB199_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_small_mask_or_32_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $15, %esi
+; X64-BMI2-NEXT:    lock btsl %esi, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB199_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB199_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i32 %c, 15
+  %shl = shl nuw nsw i32 1, %0
+  %1 = atomicrmw or ptr %v, i32 %shl monotonic, align 4
+  %and = and i32 %1, %shl
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %conv2 = zext i32 %0 to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %conv2
+  %2 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %2, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_mask0_or_32_gpr_brnz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_or_32_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    andl $31, %edx
+; X86-NOBMI2-NEXT:    lock btsl %edx, (%ecx)
+; X86-NOBMI2-NEXT:    jae .LBB200_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X86-NOBMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB200_1:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_or_32_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    andl $31, %edx
+; X86-BMI2-NEXT:    lock btsl %edx, (%ecx)
+; X86-BMI2-NEXT:    jae .LBB200_1
+; X86-BMI2-NEXT:  # %bb.2: # %if.then
+; X86-BMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB200_1:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_or_32_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $31, %eax
+; X64-NOBMI2-NEXT:    lock btsl %eax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB200_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB200_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_or_32_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $31, %eax
+; X64-BMI2-NEXT:    lock btsl %eax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB200_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB200_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i32 %c, 31
+  %shl = shl nuw i32 1, %rem
+  %0 = atomicrmw or ptr %v, i32 %shl monotonic, align 4
+  %shl1 = shl nuw i32 1, %c
+  %and = and i32 %0, %shl1
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %conv = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %conv
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_mask1_or_32_gpr_brnz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_or_32_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    andl $31, %edx
+; X86-NOBMI2-NEXT:    lock btsl %edx, (%ecx)
+; X86-NOBMI2-NEXT:    jae .LBB201_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X86-NOBMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB201_1:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_or_32_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    andl $31, %edx
+; X86-BMI2-NEXT:    lock btsl %edx, (%ecx)
+; X86-BMI2-NEXT:    jae .LBB201_1
+; X86-BMI2-NEXT:  # %bb.2: # %if.then
+; X86-BMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB201_1:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_or_32_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $31, %eax
+; X64-NOBMI2-NEXT:    lock btsl %eax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB201_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB201_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_or_32_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $31, %eax
+; X64-BMI2-NEXT:    lock btsl %eax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB201_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB201_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %0 = atomicrmw or ptr %v, i32 %shl monotonic, align 4
+  %rem = and i32 %c, 31
+  %shl1 = shl nuw i32 1, %rem
+  %and = and i32 %0, %shl1
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %conv = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %conv
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_mask01_or_32_gpr_brnz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_or_32_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    andl $31, %edx
+; X86-NOBMI2-NEXT:    lock btsl %edx, (%ecx)
+; X86-NOBMI2-NEXT:    jae .LBB202_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X86-NOBMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB202_1:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_or_32_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    andl $31, %edx
+; X86-BMI2-NEXT:    lock btsl %edx, (%ecx)
+; X86-BMI2-NEXT:    jae .LBB202_1
+; X86-BMI2-NEXT:  # %bb.2: # %if.then
+; X86-BMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB202_1:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_or_32_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $31, %eax
+; X64-NOBMI2-NEXT:    lock btsl %eax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB202_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB202_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_or_32_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $31, %eax
+; X64-BMI2-NEXT:    lock btsl %eax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB202_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB202_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i32 %c, 31
+  %shl = shl nuw i32 1, %rem
+  %0 = atomicrmw or ptr %v, i32 %shl monotonic, align 4
+  %and = and i32 %0, %shl
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %conv = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %conv
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_blsi_or_32_gpr_brnz(ptr %v, i32 %c) {
+; X86-BMI2-LABEL: atomic_blsi_or_32_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    blsil %ecx, %esi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB203_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    orl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB203_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    testl %esi, %eax
+; X86-BMI2-NEXT:    je .LBB203_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-BMI2-NEXT:    jmp .LBB203_5
+; X86-BMI2-NEXT:  .LBB203_3:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB203_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_or_32_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    blsil %esi, %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB203_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %edx
+; X64-BMI2-NEXT:    orl %ecx, %edx
+; X64-BMI2-NEXT:    lock cmpxchgl %edx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB203_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    testl %ecx, %eax
+; X64-BMI2-NEXT:    je .LBB203_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB203_3:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %sub = sub i32 0, %c
+  %and = and i32 %sub, %c
+  %0 = atomicrmw or ptr %v, i32 %and monotonic, align 4
+  %and3 = and i32 %0, %and
+  %tobool.not = icmp eq i32 %and3, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %idxprom
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_and_32_gpr_val(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_and_32_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $31, %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    lock btrl %ecx, (%edx)
+; X86-NOBMI2-NEXT:    setb %al
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    shll %cl, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_and_32_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    andl $31, %ecx
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    lock btrl %ecx, (%eax)
+; X86-BMI2-NEXT:    setb %dl
+; X86-BMI2-NEXT:    shlxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_and_32_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andl $31, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btrl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_and_32_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $31, %esi
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btrl %esi, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %not = xor i32 %shl, -1
+  %0 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %and = and i32 %0, %shl
+  ret i32 %and
+}
+
+define i32 @atomic_shl2_and_32_gpr_val(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl2_and_32_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl $2, %edx
+; X86-NOBMI2-NEXT:    shll %cl, %edx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    notl %ecx
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB205_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    andl %ecx, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB205_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl2_and_32_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl $2, %edx
+; X86-BMI2-NEXT:    shlxl %eax, %edx, %edx
+; X86-BMI2-NEXT:    movl %edx, %esi
+; X86-BMI2-NEXT:    notl %esi
+; X86-BMI2-NEXT:    movl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB205_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    andl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%ecx)
+; X86-BMI2-NEXT:    jne .LBB205_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %edx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl2_and_32_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $2, %edx
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl %edx, %ecx
+; X64-NOBMI2-NEXT:    notl %ecx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB205_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    andl %ecx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB205_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    andl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl2_and_32_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $2, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movl %ecx, %edx
+; X64-BMI2-NEXT:    notl %edx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB205_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %esi
+; X64-BMI2-NEXT:    andl %edx, %esi
+; X64-BMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB205_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    andl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl i32 2, %c
+  %not = xor i32 %shl, -1
+  %0 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %and = and i32 %0, %shl
+  ret i32 %and
+}
+
+define i32 @atomic_shl1_neq_and_32_gpr_val(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_and_32_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $-2, %esi
+; X86-NOBMI2-NEXT:    roll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB206_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    andl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB206_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    incb %cl
+; X86-NOBMI2-NEXT:    movl $1, %edx
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    shll %cl, %edx
+; X86-NOBMI2-NEXT:    andl %edx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_and_32_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $-2, %esi
+; X86-BMI2-NEXT:    roll %cl, %esi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB206_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    andl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB206_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    incb %cl
+; X86-BMI2-NEXT:    movl $1, %edx
+; X86-BMI2-NEXT:    shlxl %ecx, %edx, %ecx
+; X86-BMI2-NEXT:    andl %ecx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_and_32_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $-2, %edx
+; X64-NOBMI2-NEXT:    roll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB206_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    andl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB206_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    incb %cl
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    andl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_and_32_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    movl $-2, %edx
+; X64-BMI2-NEXT:    roll %cl, %edx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB206_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %esi
+; X64-BMI2-NEXT:    andl %edx, %esi
+; X64-BMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB206_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    incb %cl
+; X64-BMI2-NEXT:    movl $1, %edx
+; X64-BMI2-NEXT:    shlxl %ecx, %edx, %ecx
+; X64-BMI2-NEXT:    andl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %not = xor i32 %shl, -1
+  %0 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %add = add i32 %c, 1
+  %shl1 = shl nuw i32 1, %add
+  %and = and i32 %0, %shl1
+  ret i32 %and
+}
+
+define i32 @atomic_shl1_small_mask_and_32_gpr_val(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_small_mask_and_32_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $15, %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    lock btrl %ecx, (%edx)
+; X86-NOBMI2-NEXT:    setb %al
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    shll %cl, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_small_mask_and_32_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    andl $15, %ecx
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    lock btrl %ecx, (%eax)
+; X86-BMI2-NEXT:    setb %dl
+; X86-BMI2-NEXT:    shlxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_small_mask_and_32_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andl $15, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btrl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_small_mask_and_32_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $15, %esi
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btrl %esi, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i32 %c, 15
+  %shl = shl nuw nsw i32 1, %0
+  %not = xor i32 %shl, -1
+  %1 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %and = and i32 %1, %shl
+  ret i32 %and
+}
+
+define i32 @atomic_shl1_mask0_and_32_gpr_val(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_and_32_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $31, %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    lock btrl %ecx, (%edx)
+; X86-NOBMI2-NEXT:    setb %al
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    shll %cl, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_and_32_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    andl $31, %ecx
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    lock btrl %ecx, (%eax)
+; X86-BMI2-NEXT:    setb %dl
+; X86-BMI2-NEXT:    shlxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_and_32_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andl $31, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btrl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_and_32_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $31, %esi
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btrl %esi, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i32 %c, 31
+  %shl = shl nuw i32 1, %0
+  %not = xor i32 %shl, -1
+  %1 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %shl1 = shl nuw i32 1, %c
+  %and = and i32 %1, %shl1
+  ret i32 %and
+}
+
+define i32 @atomic_shl1_mask1_and_32_gpr_val(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_and_32_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $31, %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    lock btrl %ecx, (%edx)
+; X86-NOBMI2-NEXT:    setb %al
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    shll %cl, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_and_32_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    andl $31, %ecx
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    lock btrl %ecx, (%eax)
+; X86-BMI2-NEXT:    setb %dl
+; X86-BMI2-NEXT:    shlxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_and_32_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andl $31, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btrl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_and_32_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $31, %esi
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btrl %esi, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %not = xor i32 %shl, -1
+  %0 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %1 = and i32 %c, 31
+  %shl1 = shl nuw i32 1, %1
+  %and = and i32 %0, %shl1
+  ret i32 %and
+}
+
+define i32 @atomic_shl1_mask01_and_32_gpr_val(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_and_32_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $31, %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    lock btrl %ecx, (%edx)
+; X86-NOBMI2-NEXT:    setb %al
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    shll %cl, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_and_32_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    andl $31, %ecx
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    lock btrl %ecx, (%eax)
+; X86-BMI2-NEXT:    setb %dl
+; X86-BMI2-NEXT:    shlxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_and_32_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andl $31, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btrl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_and_32_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $31, %esi
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btrl %esi, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i32 %c, 31
+  %shl = shl nuw i32 1, %0
+  %not = xor i32 %shl, -1
+  %1 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %and = and i32 %1, %shl
+  ret i32 %and
+}
+
+define i32 @atomic_blsi_and_32_gpr_val(ptr %v, i32 %c) {
+; X86-BMI2-LABEL: atomic_blsi_and_32_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    blsil {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl %ecx, %esi
+; X86-BMI2-NEXT:    notl %esi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB211_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    andl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB211_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ecx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_and_32_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    blsil %esi, %ecx
+; X64-BMI2-NEXT:    movl %ecx, %edx
+; X64-BMI2-NEXT:    notl %edx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB211_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %esi
+; X64-BMI2-NEXT:    andl %edx, %esi
+; X64-BMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB211_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    andl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %sub = sub i32 0, %c
+  %and = and i32 %sub, %c
+  %not = xor i32 %and, -1
+  %0 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %and3 = and i32 %0, %and
+  ret i32 %and3
+}
+
+define i32 @atomic_shl1_and_32_gpr_valz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_and_32_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $-2, %esi
+; X86-NOBMI2-NEXT:    roll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB212_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    andl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB212_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    btl %ecx, %eax
+; X86-NOBMI2-NEXT:    setae %dl
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_and_32_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $-2, %esi
+; X86-BMI2-NEXT:    roll %cl, %esi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB212_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    andl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB212_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    btl %ecx, %eax
+; X86-BMI2-NEXT:    setae %dl
+; X86-BMI2-NEXT:    movl %edx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_and_32_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $-2, %edx
+; X64-NOBMI2-NEXT:    roll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB212_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    andl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB212_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btl %ecx, %eax
+; X64-NOBMI2-NEXT:    setae %dl
+; X64-NOBMI2-NEXT:    movl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_and_32_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    movl $-2, %edx
+; X64-BMI2-NEXT:    roll %cl, %edx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB212_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %esi
+; X64-BMI2-NEXT:    andl %edx, %esi
+; X64-BMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB212_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %edx, %edx
+; X64-BMI2-NEXT:    btl %ecx, %eax
+; X64-BMI2-NEXT:    setae %dl
+; X64-BMI2-NEXT:    movl %edx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %not = xor i32 %shl, -1
+  %0 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %1 = xor i32 %0, -1
+  %2 = lshr i32 %1, %c
+  %lnot.ext = and i32 %2, 1
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl2_and_32_gpr_valz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl2_and_32_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl $2, %edx
+; X86-NOBMI2-NEXT:    shll %cl, %edx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    notl %ecx
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB213_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    andl %ecx, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB213_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    testl %edx, %eax
+; X86-NOBMI2-NEXT:    sete %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl2_and_32_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl $2, %edx
+; X86-BMI2-NEXT:    shlxl %eax, %edx, %edx
+; X86-BMI2-NEXT:    movl %edx, %esi
+; X86-BMI2-NEXT:    notl %esi
+; X86-BMI2-NEXT:    movl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB213_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    andl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%ecx)
+; X86-BMI2-NEXT:    jne .LBB213_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    testl %edx, %eax
+; X86-BMI2-NEXT:    sete %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl2_and_32_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $2, %edx
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl %edx, %ecx
+; X64-NOBMI2-NEXT:    notl %ecx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB213_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    andl %ecx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB213_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    testl %edx, %eax
+; X64-NOBMI2-NEXT:    sete %cl
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl2_and_32_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $2, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %edx
+; X64-BMI2-NEXT:    movl %edx, %ecx
+; X64-BMI2-NEXT:    notl %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB213_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %esi
+; X64-BMI2-NEXT:    andl %ecx, %esi
+; X64-BMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB213_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    testl %edx, %eax
+; X64-BMI2-NEXT:    sete %cl
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl i32 2, %c
+  %not = xor i32 %shl, -1
+  %0 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %and = and i32 %0, %shl
+  %tobool.not = icmp eq i32 %and, 0
+  %lnot.ext = zext i1 %tobool.not to i32
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl1_neq_and_32_gpr_valz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_and_32_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $-2, %esi
+; X86-NOBMI2-NEXT:    roll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB214_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    andl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB214_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    incb %cl
+; X86-NOBMI2-NEXT:    movzbl %cl, %edx
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    btl %edx, %eax
+; X86-NOBMI2-NEXT:    setae %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_and_32_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $-2, %esi
+; X86-BMI2-NEXT:    roll %cl, %esi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB214_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    andl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB214_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    incb %cl
+; X86-BMI2-NEXT:    movzbl %cl, %edx
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    btl %edx, %eax
+; X86-BMI2-NEXT:    setae %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_and_32_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $-2, %edx
+; X64-NOBMI2-NEXT:    roll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB214_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    andl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB214_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    incb %cl
+; X64-NOBMI2-NEXT:    movzbl %cl, %edx
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    btl %edx, %eax
+; X64-NOBMI2-NEXT:    setae %cl
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_and_32_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    movl $-2, %edx
+; X64-BMI2-NEXT:    roll %cl, %edx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB214_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %esi
+; X64-BMI2-NEXT:    andl %edx, %esi
+; X64-BMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB214_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    incb %cl
+; X64-BMI2-NEXT:    movzbl %cl, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    btl %edx, %eax
+; X64-BMI2-NEXT:    setae %cl
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %not = xor i32 %shl, -1
+  %0 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %add = add i32 %c, 1
+  %1 = xor i32 %0, -1
+  %2 = lshr i32 %1, %add
+  %lnot.ext = and i32 %2, 1
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl1_small_mask_and_32_gpr_valz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_small_mask_and_32_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $15, %ecx
+; X86-NOBMI2-NEXT:    movl $-2, %esi
+; X86-NOBMI2-NEXT:    roll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB215_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    andl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB215_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    btl %ecx, %eax
+; X86-NOBMI2-NEXT:    setae %dl
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_small_mask_and_32_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    andl $15, %ecx
+; X86-BMI2-NEXT:    movl $-2, %esi
+; X86-BMI2-NEXT:    roll %cl, %esi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB215_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    andl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB215_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    btl %ecx, %eax
+; X86-BMI2-NEXT:    setae %dl
+; X86-BMI2-NEXT:    movl %edx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_small_mask_and_32_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andl $15, %ecx
+; X64-NOBMI2-NEXT:    movl $-2, %edx
+; X64-NOBMI2-NEXT:    roll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB215_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    andl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB215_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btl %ecx, %eax
+; X64-NOBMI2-NEXT:    setae %dl
+; X64-NOBMI2-NEXT:    movl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_small_mask_and_32_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    andl $15, %ecx
+; X64-BMI2-NEXT:    movl $-2, %edx
+; X64-BMI2-NEXT:    roll %cl, %edx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB215_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %esi
+; X64-BMI2-NEXT:    andl %edx, %esi
+; X64-BMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB215_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %edx, %edx
+; X64-BMI2-NEXT:    btl %ecx, %eax
+; X64-BMI2-NEXT:    setae %dl
+; X64-BMI2-NEXT:    movl %edx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i32 %c, 15
+  %shl = shl nuw nsw i32 1, %0
+  %not = xor i32 %shl, -1
+  %1 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %2 = xor i32 %1, -1
+  %3 = lshr i32 %2, %0
+  %lnot.ext = and i32 %3, 1
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl1_mask0_and_32_gpr_valz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_and_32_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $-2, %esi
+; X86-NOBMI2-NEXT:    roll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB216_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    andl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB216_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    btl %ecx, %eax
+; X86-NOBMI2-NEXT:    setae %dl
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_and_32_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $-2, %esi
+; X86-BMI2-NEXT:    roll %cl, %esi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB216_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    andl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB216_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    btl %ecx, %eax
+; X86-BMI2-NEXT:    setae %dl
+; X86-BMI2-NEXT:    movl %edx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_and_32_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $-2, %edx
+; X64-NOBMI2-NEXT:    roll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB216_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    andl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB216_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btl %ecx, %eax
+; X64-NOBMI2-NEXT:    setae %dl
+; X64-NOBMI2-NEXT:    movl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_and_32_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    movl $-2, %edx
+; X64-BMI2-NEXT:    roll %cl, %edx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB216_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %esi
+; X64-BMI2-NEXT:    andl %edx, %esi
+; X64-BMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB216_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %edx, %edx
+; X64-BMI2-NEXT:    btl %ecx, %eax
+; X64-BMI2-NEXT:    setae %dl
+; X64-BMI2-NEXT:    movl %edx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i32 %c, 31
+  %shl = shl nuw i32 1, %0
+  %not = xor i32 %shl, -1
+  %1 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %2 = xor i32 %1, -1
+  %3 = lshr i32 %2, %c
+  %lnot.ext = and i32 %3, 1
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl1_mask1_and_32_gpr_valz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_and_32_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $-2, %esi
+; X86-NOBMI2-NEXT:    roll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB217_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    andl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB217_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    btl %ecx, %eax
+; X86-NOBMI2-NEXT:    setae %dl
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_and_32_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $-2, %esi
+; X86-BMI2-NEXT:    roll %cl, %esi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB217_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    andl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB217_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    btl %ecx, %eax
+; X86-BMI2-NEXT:    setae %dl
+; X86-BMI2-NEXT:    movl %edx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_and_32_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $-2, %edx
+; X64-NOBMI2-NEXT:    roll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB217_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    andl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB217_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btl %ecx, %eax
+; X64-NOBMI2-NEXT:    setae %dl
+; X64-NOBMI2-NEXT:    movl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_and_32_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    movl $-2, %edx
+; X64-BMI2-NEXT:    roll %cl, %edx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB217_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %esi
+; X64-BMI2-NEXT:    andl %edx, %esi
+; X64-BMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB217_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %edx, %edx
+; X64-BMI2-NEXT:    btl %ecx, %eax
+; X64-BMI2-NEXT:    setae %dl
+; X64-BMI2-NEXT:    movl %edx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %not = xor i32 %shl, -1
+  %0 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %1 = and i32 %c, 31
+  %2 = xor i32 %0, -1
+  %3 = lshr i32 %2, %1
+  %lnot.ext = and i32 %3, 1
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl1_mask01_and_32_gpr_valz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_and_32_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl %ecx, %edx
+; X86-NOBMI2-NEXT:    andl $31, %edx
+; X86-NOBMI2-NEXT:    movl $-2, %edi
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    roll %cl, %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB218_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    andl %edi, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB218_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    btl %edx, %eax
+; X86-NOBMI2-NEXT:    setae %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_and_32_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl %ecx, %edx
+; X86-BMI2-NEXT:    andl $31, %edx
+; X86-BMI2-NEXT:    movl $-2, %edi
+; X86-BMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-BMI2-NEXT:    roll %cl, %edi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB218_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ecx
+; X86-BMI2-NEXT:    andl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchgl %ecx, (%esi)
+; X86-BMI2-NEXT:    jne .LBB218_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    btl %edx, %eax
+; X86-BMI2-NEXT:    setae %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_and_32_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl %esi, %edx
+; X64-NOBMI2-NEXT:    andl $31, %edx
+; X64-NOBMI2-NEXT:    movl $-2, %esi
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    roll %cl, %esi
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB218_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    andl %esi, %ecx
+; X64-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB218_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    btl %edx, %eax
+; X64-NOBMI2-NEXT:    setae %cl
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_and_32_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    movl %esi, %edx
+; X64-BMI2-NEXT:    andl $31, %edx
+; X64-BMI2-NEXT:    movl $-2, %esi
+; X64-BMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-BMI2-NEXT:    roll %cl, %esi
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB218_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    andl %esi, %ecx
+; X64-BMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB218_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    btl %edx, %eax
+; X64-BMI2-NEXT:    setae %cl
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i32 %c, 31
+  %shl = shl nuw i32 1, %0
+  %not = xor i32 %shl, -1
+  %1 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %2 = xor i32 %1, -1
+  %3 = lshr i32 %2, %0
+  %lnot.ext = and i32 %3, 1
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_blsi_and_32_gpr_valz(ptr %v, i32 %c) {
+; X86-BMI2-LABEL: atomic_blsi_and_32_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    blsil {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl %edx, %esi
+; X86-BMI2-NEXT:    notl %esi
+; X86-BMI2-NEXT:    movl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB219_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    andl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%ecx)
+; X86-BMI2-NEXT:    jne .LBB219_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    testl %edx, %eax
+; X86-BMI2-NEXT:    sete %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_and_32_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    blsil %esi, %edx
+; X64-BMI2-NEXT:    movl %edx, %ecx
+; X64-BMI2-NEXT:    notl %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB219_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %esi
+; X64-BMI2-NEXT:    andl %ecx, %esi
+; X64-BMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB219_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    testl %edx, %eax
+; X64-BMI2-NEXT:    sete %cl
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %sub = sub i32 0, %c
+  %and = and i32 %sub, %c
+  %not = xor i32 %and, -1
+  %0 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %and3 = and i32 %0, %and
+  %tobool.not = icmp eq i32 %and3, 0
+  %lnot.ext = zext i1 %tobool.not to i32
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl1_and_32_gpr_valnz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_and_32_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $-2, %esi
+; X86-NOBMI2-NEXT:    roll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB220_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    andl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB220_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    btl %ecx, %eax
+; X86-NOBMI2-NEXT:    setb %dl
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_and_32_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $-2, %esi
+; X86-BMI2-NEXT:    roll %cl, %esi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB220_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    andl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB220_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    shrxl %ecx, %eax, %eax
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_and_32_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $-2, %edx
+; X64-NOBMI2-NEXT:    roll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB220_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    andl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB220_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btl %ecx, %eax
+; X64-NOBMI2-NEXT:    setb %dl
+; X64-NOBMI2-NEXT:    movl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_and_32_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    movl $-2, %edx
+; X64-BMI2-NEXT:    roll %cl, %edx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB220_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %esi
+; X64-BMI2-NEXT:    andl %edx, %esi
+; X64-BMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB220_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrxl %ecx, %eax, %eax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %not = xor i32 %shl, -1
+  %0 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %1 = lshr i32 %0, %c
+  %lnot.ext = and i32 %1, 1
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl2_and_32_gpr_valnz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl2_and_32_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl $2, %edx
+; X86-NOBMI2-NEXT:    shll %cl, %edx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    notl %ecx
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB221_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    andl %ecx, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB221_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    testl %edx, %eax
+; X86-NOBMI2-NEXT:    setne %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl2_and_32_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl $2, %edx
+; X86-BMI2-NEXT:    shlxl %eax, %edx, %edx
+; X86-BMI2-NEXT:    movl %edx, %esi
+; X86-BMI2-NEXT:    notl %esi
+; X86-BMI2-NEXT:    movl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB221_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    andl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%ecx)
+; X86-BMI2-NEXT:    jne .LBB221_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    testl %edx, %eax
+; X86-BMI2-NEXT:    setne %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl2_and_32_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $2, %edx
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl %edx, %ecx
+; X64-NOBMI2-NEXT:    notl %ecx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB221_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    andl %ecx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB221_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    testl %edx, %eax
+; X64-NOBMI2-NEXT:    setne %cl
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl2_and_32_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $2, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %edx
+; X64-BMI2-NEXT:    movl %edx, %ecx
+; X64-BMI2-NEXT:    notl %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB221_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %esi
+; X64-BMI2-NEXT:    andl %ecx, %esi
+; X64-BMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB221_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    testl %edx, %eax
+; X64-BMI2-NEXT:    setne %cl
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl i32 2, %c
+  %not = xor i32 %shl, -1
+  %0 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %and = and i32 %0, %shl
+  %tobool = icmp ne i32 %and, 0
+  %lnot.ext = zext i1 %tobool to i32
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl1_neq_and_32_gpr_valnz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_and_32_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $-2, %esi
+; X86-NOBMI2-NEXT:    roll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB222_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    andl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB222_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    incb %cl
+; X86-NOBMI2-NEXT:    movzbl %cl, %edx
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    btl %edx, %eax
+; X86-NOBMI2-NEXT:    setb %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_and_32_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $-2, %esi
+; X86-BMI2-NEXT:    roll %cl, %esi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB222_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    andl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB222_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    incb %cl
+; X86-BMI2-NEXT:    shrxl %ecx, %eax, %eax
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_and_32_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $-2, %edx
+; X64-NOBMI2-NEXT:    roll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB222_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    andl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB222_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    incb %cl
+; X64-NOBMI2-NEXT:    movzbl %cl, %edx
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    btl %edx, %eax
+; X64-NOBMI2-NEXT:    setb %cl
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_and_32_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    movl $-2, %edx
+; X64-BMI2-NEXT:    roll %cl, %edx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB222_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %esi
+; X64-BMI2-NEXT:    andl %edx, %esi
+; X64-BMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB222_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    incb %cl
+; X64-BMI2-NEXT:    shrxl %ecx, %eax, %eax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %not = xor i32 %shl, -1
+  %0 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %add = add i32 %c, 1
+  %1 = lshr i32 %0, %add
+  %lnot.ext = and i32 %1, 1
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl1_small_mask_and_32_gpr_valnz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_small_mask_and_32_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $15, %ecx
+; X86-NOBMI2-NEXT:    movl $-2, %esi
+; X86-NOBMI2-NEXT:    roll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB223_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    andl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB223_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    btl %ecx, %eax
+; X86-NOBMI2-NEXT:    setb %dl
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_small_mask_and_32_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    andl $15, %ecx
+; X86-BMI2-NEXT:    movl $-2, %esi
+; X86-BMI2-NEXT:    roll %cl, %esi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB223_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    andl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB223_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    shrxl %ecx, %eax, %eax
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_small_mask_and_32_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    andl $15, %ecx
+; X64-NOBMI2-NEXT:    movl $-2, %edx
+; X64-NOBMI2-NEXT:    roll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB223_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    andl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB223_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btl %ecx, %eax
+; X64-NOBMI2-NEXT:    setb %dl
+; X64-NOBMI2-NEXT:    movl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_small_mask_and_32_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    andl $15, %ecx
+; X64-BMI2-NEXT:    movl $-2, %edx
+; X64-BMI2-NEXT:    roll %cl, %edx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB223_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %esi
+; X64-BMI2-NEXT:    andl %edx, %esi
+; X64-BMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB223_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrxl %ecx, %eax, %eax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i32 %c, 15
+  %shl = shl nuw nsw i32 1, %0
+  %not = xor i32 %shl, -1
+  %1 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %2 = lshr i32 %1, %0
+  %lnot.ext = and i32 %2, 1
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl1_mask0_and_32_gpr_valnz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_and_32_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $-2, %esi
+; X86-NOBMI2-NEXT:    roll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB224_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    andl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB224_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    btl %ecx, %eax
+; X86-NOBMI2-NEXT:    setb %dl
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_and_32_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $-2, %esi
+; X86-BMI2-NEXT:    roll %cl, %esi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB224_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    andl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB224_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    shrxl %ecx, %eax, %eax
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_and_32_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $-2, %edx
+; X64-NOBMI2-NEXT:    roll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB224_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    andl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB224_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btl %ecx, %eax
+; X64-NOBMI2-NEXT:    setb %dl
+; X64-NOBMI2-NEXT:    movl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_and_32_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    movl $-2, %edx
+; X64-BMI2-NEXT:    roll %cl, %edx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB224_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %esi
+; X64-BMI2-NEXT:    andl %edx, %esi
+; X64-BMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB224_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrxl %ecx, %eax, %eax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i32 %c, 31
+  %shl = shl nuw i32 1, %0
+  %not = xor i32 %shl, -1
+  %1 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %2 = lshr i32 %1, %c
+  %lnot.ext = and i32 %2, 1
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl1_mask1_and_32_gpr_valnz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_and_32_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $-2, %esi
+; X86-NOBMI2-NEXT:    roll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB225_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    andl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB225_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    btl %ecx, %eax
+; X86-NOBMI2-NEXT:    setb %dl
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_and_32_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $-2, %esi
+; X86-BMI2-NEXT:    roll %cl, %esi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB225_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    andl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB225_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    shrxl %ecx, %eax, %eax
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_and_32_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $-2, %edx
+; X64-NOBMI2-NEXT:    roll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB225_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    andl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB225_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btl %ecx, %eax
+; X64-NOBMI2-NEXT:    setb %dl
+; X64-NOBMI2-NEXT:    movl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_and_32_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    movl $-2, %edx
+; X64-BMI2-NEXT:    roll %cl, %edx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB225_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %esi
+; X64-BMI2-NEXT:    andl %edx, %esi
+; X64-BMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB225_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrxl %ecx, %eax, %eax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %not = xor i32 %shl, -1
+  %0 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %1 = and i32 %c, 31
+  %2 = lshr i32 %0, %1
+  %lnot.ext = and i32 %2, 1
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl1_mask01_and_32_gpr_valnz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_and_32_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl %ecx, %edx
+; X86-NOBMI2-NEXT:    andl $31, %edx
+; X86-NOBMI2-NEXT:    movl $-2, %edi
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    roll %cl, %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB226_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    andl %edi, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB226_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    btl %edx, %eax
+; X86-NOBMI2-NEXT:    setb %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_and_32_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl %ecx, %edx
+; X86-BMI2-NEXT:    andl $31, %edx
+; X86-BMI2-NEXT:    movl $-2, %edi
+; X86-BMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-BMI2-NEXT:    roll %cl, %edi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB226_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ecx
+; X86-BMI2-NEXT:    andl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchgl %ecx, (%esi)
+; X86-BMI2-NEXT:    jne .LBB226_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    shrxl %edx, %eax, %eax
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_and_32_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl %esi, %edx
+; X64-NOBMI2-NEXT:    andl $31, %edx
+; X64-NOBMI2-NEXT:    movl $-2, %esi
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NOBMI2-NEXT:    roll %cl, %esi
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB226_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    andl %esi, %ecx
+; X64-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB226_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    btl %edx, %eax
+; X64-NOBMI2-NEXT:    setb %cl
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_and_32_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    movl %esi, %edx
+; X64-BMI2-NEXT:    andl $31, %edx
+; X64-BMI2-NEXT:    movl $-2, %esi
+; X64-BMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-BMI2-NEXT:    roll %cl, %esi
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB226_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    andl %esi, %ecx
+; X64-BMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB226_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrxl %edx, %eax, %eax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i32 %c, 31
+  %shl = shl nuw i32 1, %0
+  %not = xor i32 %shl, -1
+  %1 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %2 = lshr i32 %1, %0
+  %lnot.ext = and i32 %2, 1
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_blsi_and_32_gpr_valnz(ptr %v, i32 %c) {
+; X86-BMI2-LABEL: atomic_blsi_and_32_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    blsil {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl %edx, %esi
+; X86-BMI2-NEXT:    notl %esi
+; X86-BMI2-NEXT:    movl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB227_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    andl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%ecx)
+; X86-BMI2-NEXT:    jne .LBB227_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    testl %edx, %eax
+; X86-BMI2-NEXT:    setne %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_and_32_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    blsil %esi, %edx
+; X64-BMI2-NEXT:    movl %edx, %ecx
+; X64-BMI2-NEXT:    notl %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB227_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %esi
+; X64-BMI2-NEXT:    andl %ecx, %esi
+; X64-BMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB227_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    testl %edx, %eax
+; X64-BMI2-NEXT:    setne %cl
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %sub = sub i32 0, %c
+  %and = and i32 %sub, %c
+  %not = xor i32 %and, -1
+  %0 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %and3 = and i32 %0, %and
+  %tobool = icmp ne i32 %and3, 0
+  %lnot.ext = zext i1 %tobool to i32
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl1_and_32_gpr_br(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_and_32_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    andl $31, %edx
+; X86-NOBMI2-NEXT:    lock btrl %edx, (%ecx)
+; X86-NOBMI2-NEXT:    jae .LBB228_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X86-NOBMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB228_1:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_and_32_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    andl $31, %edx
+; X86-BMI2-NEXT:    lock btrl %edx, (%ecx)
+; X86-BMI2-NEXT:    jae .LBB228_1
+; X86-BMI2-NEXT:  # %bb.2: # %if.then
+; X86-BMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB228_1:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_and_32_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $31, %eax
+; X64-NOBMI2-NEXT:    lock btrl %eax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB228_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB228_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_and_32_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $31, %eax
+; X64-BMI2-NEXT:    lock btrl %eax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB228_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB228_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %not = xor i32 %shl, -1
+  %0 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %and = and i32 %0, %shl
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %idxprom
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl2_and_32_gpr_br(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl2_and_32_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $2, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl %esi, %edi
+; X86-NOBMI2-NEXT:    notl %edi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB229_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %edi, %ebx
+; X86-NOBMI2-NEXT:    lock cmpxchgl %ebx, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB229_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    testl %esi, %eax
+; X86-NOBMI2-NEXT:    je .LBB229_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-NOBMI2-NEXT:    jmp .LBB229_5
+; X86-NOBMI2-NEXT:  .LBB229_3:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB229_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl2_and_32_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    .cfi_offset %esi, -16
+; X86-BMI2-NEXT:    .cfi_offset %edi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $2, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %esi
+; X86-BMI2-NEXT:    movl %esi, %edi
+; X86-BMI2-NEXT:    notl %edi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB229_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %edi, %ebx
+; X86-BMI2-NEXT:    lock cmpxchgl %ebx, (%edx)
+; X86-BMI2-NEXT:    jne .LBB229_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    testl %esi, %eax
+; X86-BMI2-NEXT:    je .LBB229_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-BMI2-NEXT:    jmp .LBB229_5
+; X86-BMI2-NEXT:  .LBB229_3:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB229_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl2_and_32_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $2, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl %edx, %esi
+; X64-NOBMI2-NEXT:    notl %esi
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB229_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %r8d
+; X64-NOBMI2-NEXT:    andl %esi, %r8d
+; X64-NOBMI2-NEXT:    lock cmpxchgl %r8d, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB229_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    testl %edx, %eax
+; X64-NOBMI2-NEXT:    je .LBB229_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB229_3:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl2_and_32_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $2, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movl %ecx, %edx
+; X64-BMI2-NEXT:    notl %edx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB229_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %r8d
+; X64-BMI2-NEXT:    andl %edx, %r8d
+; X64-BMI2-NEXT:    lock cmpxchgl %r8d, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB229_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    testl %ecx, %eax
+; X64-BMI2-NEXT:    je .LBB229_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB229_3:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl i32 2, %c
+  %not = xor i32 %shl, -1
+  %0 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %and = and i32 %0, %shl
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %idxprom
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_neq_and_32_gpr_br(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_and_32_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $-2, %esi
+; X86-NOBMI2-NEXT:    roll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB230_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    andl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB230_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl %ecx, %ebx
+; X86-NOBMI2-NEXT:    incb %bl
+; X86-NOBMI2-NEXT:    movzbl %bl, %esi
+; X86-NOBMI2-NEXT:    btl %esi, %eax
+; X86-NOBMI2-NEXT:    jae .LBB230_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-NOBMI2-NEXT:    jmp .LBB230_5
+; X86-NOBMI2-NEXT:  .LBB230_3:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB230_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_and_32_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    .cfi_offset %esi, -16
+; X86-BMI2-NEXT:    .cfi_offset %edi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $-2, %esi
+; X86-BMI2-NEXT:    roll %cl, %esi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB230_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    andl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB230_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl %ecx, %ebx
+; X86-BMI2-NEXT:    incb %bl
+; X86-BMI2-NEXT:    movzbl %bl, %esi
+; X86-BMI2-NEXT:    btl %esi, %eax
+; X86-BMI2-NEXT:    jae .LBB230_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-BMI2-NEXT:    jmp .LBB230_5
+; X86-BMI2-NEXT:  .LBB230_3:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB230_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_and_32_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $-2, %edx
+; X64-NOBMI2-NEXT:    roll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB230_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    andl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB230_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    leal 1(%rcx), %edx
+; X64-NOBMI2-NEXT:    movzbl %dl, %edx
+; X64-NOBMI2-NEXT:    btl %edx, %eax
+; X64-NOBMI2-NEXT:    jae .LBB230_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB230_3:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_and_32_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    movl $-2, %edx
+; X64-BMI2-NEXT:    roll %cl, %edx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB230_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %esi
+; X64-BMI2-NEXT:    andl %edx, %esi
+; X64-BMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB230_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    leal 1(%rcx), %edx
+; X64-BMI2-NEXT:    movzbl %dl, %edx
+; X64-BMI2-NEXT:    btl %edx, %eax
+; X64-BMI2-NEXT:    jae .LBB230_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB230_3:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %not = xor i32 %shl, -1
+  %0 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %add = add i32 %c, 1
+  %shl1 = shl nuw i32 1, %add
+  %and = and i32 %0, %shl1
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %idxprom
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_small_mask_and_32_gpr_br(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_small_mask_and_32_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $15, %ecx
+; X86-NOBMI2-NEXT:    lock btrl %ecx, (%eax)
+; X86-NOBMI2-NEXT:    jae .LBB231_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X86-NOBMI2-NEXT:    movl (%eax,%ecx,4), %eax
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB231_1:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_small_mask_and_32_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    andl $15, %ecx
+; X86-BMI2-NEXT:    lock btrl %ecx, (%eax)
+; X86-BMI2-NEXT:    jae .LBB231_1
+; X86-BMI2-NEXT:  # %bb.2: # %if.then
+; X86-BMI2-NEXT:    movl (%eax,%ecx,4), %eax
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB231_1:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_small_mask_and_32_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    andl $15, %esi
+; X64-NOBMI2-NEXT:    lock btrl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB231_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB231_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_small_mask_and_32_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $15, %esi
+; X64-BMI2-NEXT:    lock btrl %esi, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB231_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB231_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i32 %c, 15
+  %shl = shl nuw nsw i32 1, %0
+  %not = xor i32 %shl, -1
+  %1 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %and = and i32 %1, %shl
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %conv2 = zext i32 %0 to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %conv2
+  %2 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %2, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_mask0_and_32_gpr_br(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_and_32_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    andl $31, %edx
+; X86-NOBMI2-NEXT:    lock btrl %edx, (%ecx)
+; X86-NOBMI2-NEXT:    jae .LBB232_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X86-NOBMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB232_1:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_and_32_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    andl $31, %edx
+; X86-BMI2-NEXT:    lock btrl %edx, (%ecx)
+; X86-BMI2-NEXT:    jae .LBB232_1
+; X86-BMI2-NEXT:  # %bb.2: # %if.then
+; X86-BMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB232_1:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_and_32_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $31, %eax
+; X64-NOBMI2-NEXT:    lock btrl %eax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB232_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB232_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_and_32_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $31, %eax
+; X64-BMI2-NEXT:    lock btrl %eax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB232_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB232_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i32 %c, 31
+  %shl = shl nuw i32 1, %rem
+  %not = xor i32 %shl, -1
+  %0 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %shl1 = shl nuw i32 1, %c
+  %and = and i32 %0, %shl1
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %conv = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %conv
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_mask1_and_32_gpr_br(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_and_32_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    andl $31, %edx
+; X86-NOBMI2-NEXT:    lock btrl %edx, (%ecx)
+; X86-NOBMI2-NEXT:    jae .LBB233_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X86-NOBMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB233_1:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_and_32_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    andl $31, %edx
+; X86-BMI2-NEXT:    lock btrl %edx, (%ecx)
+; X86-BMI2-NEXT:    jae .LBB233_1
+; X86-BMI2-NEXT:  # %bb.2: # %if.then
+; X86-BMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB233_1:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_and_32_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $31, %eax
+; X64-NOBMI2-NEXT:    lock btrl %eax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB233_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB233_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_and_32_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $31, %eax
+; X64-BMI2-NEXT:    lock btrl %eax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB233_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB233_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %not = xor i32 %shl, -1
+  %0 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %rem = and i32 %c, 31
+  %shl1 = shl nuw i32 1, %rem
+  %and = and i32 %0, %shl1
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %conv = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %conv
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_mask01_and_32_gpr_br(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_and_32_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    andl $31, %edx
+; X86-NOBMI2-NEXT:    lock btrl %edx, (%ecx)
+; X86-NOBMI2-NEXT:    jae .LBB234_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X86-NOBMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB234_1:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_and_32_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    andl $31, %edx
+; X86-BMI2-NEXT:    lock btrl %edx, (%ecx)
+; X86-BMI2-NEXT:    jae .LBB234_1
+; X86-BMI2-NEXT:  # %bb.2: # %if.then
+; X86-BMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB234_1:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_and_32_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $31, %eax
+; X64-NOBMI2-NEXT:    lock btrl %eax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB234_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB234_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_and_32_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $31, %eax
+; X64-BMI2-NEXT:    lock btrl %eax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB234_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB234_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i32 %c, 31
+  %shl = shl nuw i32 1, %rem
+  %not = xor i32 %shl, -1
+  %0 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %and = and i32 %0, %shl
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %conv = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %conv
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_blsi_and_32_gpr_br(ptr %v, i32 %c) {
+; X86-BMI2-LABEL: atomic_blsi_and_32_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    .cfi_offset %esi, -16
+; X86-BMI2-NEXT:    .cfi_offset %edi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    blsil %ecx, %esi
+; X86-BMI2-NEXT:    movl %esi, %edi
+; X86-BMI2-NEXT:    notl %edi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB235_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %edi, %ebx
+; X86-BMI2-NEXT:    lock cmpxchgl %ebx, (%edx)
+; X86-BMI2-NEXT:    jne .LBB235_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    testl %esi, %eax
+; X86-BMI2-NEXT:    je .LBB235_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-BMI2-NEXT:    jmp .LBB235_5
+; X86-BMI2-NEXT:  .LBB235_3:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB235_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_and_32_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    blsil %esi, %ecx
+; X64-BMI2-NEXT:    movl %ecx, %edx
+; X64-BMI2-NEXT:    notl %edx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB235_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %r8d
+; X64-BMI2-NEXT:    andl %edx, %r8d
+; X64-BMI2-NEXT:    lock cmpxchgl %r8d, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB235_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    testl %ecx, %eax
+; X64-BMI2-NEXT:    je .LBB235_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB235_3:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %sub = sub i32 0, %c
+  %and = and i32 %sub, %c
+  %not = xor i32 %and, -1
+  %0 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %and3 = and i32 %0, %and
+  %tobool.not = icmp eq i32 %and3, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %idxprom
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_and_32_gpr_brz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_and_32_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    andl $31, %eax
+; X86-NOBMI2-NEXT:    lock btrl %eax, (%edx)
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jae .LBB236_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %return
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB236_1: # %if.then
+; X86-NOBMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_and_32_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    andl $31, %eax
+; X86-BMI2-NEXT:    lock btrl %eax, (%edx)
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jae .LBB236_1
+; X86-BMI2-NEXT:  # %bb.2: # %return
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB236_1: # %if.then
+; X86-BMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_and_32_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $31, %eax
+; X64-NOBMI2-NEXT:    lock btrl %eax, (%rdi)
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    jae .LBB236_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB236_1: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_and_32_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $31, %eax
+; X64-BMI2-NEXT:    lock btrl %eax, (%rdi)
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    jae .LBB236_1
+; X64-BMI2-NEXT:  # %bb.2: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB236_1: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %not = xor i32 %shl, -1
+  %0 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %and = and i32 %0, %shl
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %idxprom
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl2_and_32_gpr_brz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl2_and_32_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $2, %edi
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    movl %edi, %edx
+; X86-NOBMI2-NEXT:    notl %edx
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB237_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %edx, %ebx
+; X86-NOBMI2-NEXT:    lock cmpxchgl %ebx, (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB237_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl $123, %edx
+; X86-NOBMI2-NEXT:    testl %edi, %eax
+; X86-NOBMI2-NEXT:    jne .LBB237_4
+; X86-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X86-NOBMI2-NEXT:    movl (%esi,%ecx,4), %edx
+; X86-NOBMI2-NEXT:  .LBB237_4: # %return
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl2_and_32_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    .cfi_offset %esi, -16
+; X86-BMI2-NEXT:    .cfi_offset %edi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $2, %eax
+; X86-BMI2-NEXT:    shlxl %edx, %eax, %edi
+; X86-BMI2-NEXT:    movl %edi, %ecx
+; X86-BMI2-NEXT:    notl %ecx
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB237_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ecx, %ebx
+; X86-BMI2-NEXT:    lock cmpxchgl %ebx, (%esi)
+; X86-BMI2-NEXT:    jne .LBB237_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl $123, %ecx
+; X86-BMI2-NEXT:    testl %edi, %eax
+; X86-BMI2-NEXT:    jne .LBB237_4
+; X86-BMI2-NEXT:  # %bb.3: # %if.then
+; X86-BMI2-NEXT:    movl (%esi,%edx,4), %ecx
+; X86-BMI2-NEXT:  .LBB237_4: # %return
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl2_and_32_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $2, %esi
+; X64-NOBMI2-NEXT:    shll %cl, %esi
+; X64-NOBMI2-NEXT:    movl %esi, %edx
+; X64-NOBMI2-NEXT:    notl %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB237_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %r8d
+; X64-NOBMI2-NEXT:    andl %edx, %r8d
+; X64-NOBMI2-NEXT:    lock cmpxchgl %r8d, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB237_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movl $123, %edx
+; X64-NOBMI2-NEXT:    testl %esi, %eax
+; X64-NOBMI2-NEXT:    je .LBB237_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %return
+; X64-NOBMI2-NEXT:    movl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB237_3: # %if.then
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %edx
+; X64-NOBMI2-NEXT:    movl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl2_and_32_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $2, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %edx
+; X64-BMI2-NEXT:    movl %edx, %ecx
+; X64-BMI2-NEXT:    notl %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB237_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %r8d
+; X64-BMI2-NEXT:    andl %ecx, %r8d
+; X64-BMI2-NEXT:    lock cmpxchgl %r8d, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB237_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movl $123, %ecx
+; X64-BMI2-NEXT:    testl %edx, %eax
+; X64-BMI2-NEXT:    je .LBB237_3
+; X64-BMI2-NEXT:  # %bb.4: # %return
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB237_3: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %ecx
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl i32 2, %c
+  %not = xor i32 %shl, -1
+  %0 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %and = and i32 %0, %shl
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %idxprom
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_neq_and_32_gpr_brz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_and_32_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $-2, %edx
+; X86-NOBMI2-NEXT:    roll %cl, %edx
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB238_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    andl %edx, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB238_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl %ecx, %edx
+; X86-NOBMI2-NEXT:    incb %dl
+; X86-NOBMI2-NEXT:    movzbl %dl, %edi
+; X86-NOBMI2-NEXT:    movl $123, %edx
+; X86-NOBMI2-NEXT:    btl %edi, %eax
+; X86-NOBMI2-NEXT:    jb .LBB238_4
+; X86-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X86-NOBMI2-NEXT:    movl (%esi,%ecx,4), %edx
+; X86-NOBMI2-NEXT:  .LBB238_4: # %return
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_and_32_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %edi, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $-2, %edx
+; X86-BMI2-NEXT:    roll %cl, %edx
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB238_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    andl %edx, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%esi)
+; X86-BMI2-NEXT:    jne .LBB238_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl %ecx, %edx
+; X86-BMI2-NEXT:    incb %dl
+; X86-BMI2-NEXT:    movzbl %dl, %edi
+; X86-BMI2-NEXT:    movl $123, %edx
+; X86-BMI2-NEXT:    btl %edi, %eax
+; X86-BMI2-NEXT:    jb .LBB238_4
+; X86-BMI2-NEXT:  # %bb.3: # %if.then
+; X86-BMI2-NEXT:    movl (%esi,%ecx,4), %edx
+; X86-BMI2-NEXT:  .LBB238_4: # %return
+; X86-BMI2-NEXT:    movl %edx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_and_32_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $-2, %edx
+; X64-NOBMI2-NEXT:    roll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB238_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    andl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB238_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    leal 1(%rcx), %edx
+; X64-NOBMI2-NEXT:    movzbl %dl, %esi
+; X64-NOBMI2-NEXT:    movl $123, %edx
+; X64-NOBMI2-NEXT:    btl %esi, %eax
+; X64-NOBMI2-NEXT:    jae .LBB238_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %return
+; X64-NOBMI2-NEXT:    movl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB238_3: # %if.then
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %edx
+; X64-NOBMI2-NEXT:    movl %edx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_and_32_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    movl $-2, %edx
+; X64-BMI2-NEXT:    roll %cl, %edx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB238_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %esi
+; X64-BMI2-NEXT:    andl %edx, %esi
+; X64-BMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB238_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    leal 1(%rcx), %edx
+; X64-BMI2-NEXT:    movzbl %dl, %esi
+; X64-BMI2-NEXT:    movl $123, %edx
+; X64-BMI2-NEXT:    btl %esi, %eax
+; X64-BMI2-NEXT:    jae .LBB238_3
+; X64-BMI2-NEXT:  # %bb.4: # %return
+; X64-BMI2-NEXT:    movl %edx, %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB238_3: # %if.then
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %edx
+; X64-BMI2-NEXT:    movl %edx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %not = xor i32 %shl, -1
+  %0 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %add = add i32 %c, 1
+  %shl1 = shl nuw i32 1, %add
+  %and = and i32 %0, %shl1
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %idxprom
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_small_mask_and_32_gpr_brz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_small_mask_and_32_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    andl $15, %edx
+; X86-NOBMI2-NEXT:    lock btrl %edx, (%ecx)
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jae .LBB239_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %return
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB239_1: # %if.then
+; X86-NOBMI2-NEXT:    movl (%ecx,%edx,4), %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_small_mask_and_32_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    andl $15, %edx
+; X86-BMI2-NEXT:    lock btrl %edx, (%ecx)
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jae .LBB239_1
+; X86-BMI2-NEXT:  # %bb.2: # %return
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB239_1: # %if.then
+; X86-BMI2-NEXT:    movl (%ecx,%edx,4), %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_small_mask_and_32_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    andl $15, %esi
+; X64-NOBMI2-NEXT:    lock btrl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    jae .LBB239_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB239_1: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_small_mask_and_32_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $15, %esi
+; X64-BMI2-NEXT:    lock btrl %esi, (%rdi)
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    jae .LBB239_1
+; X64-BMI2-NEXT:  # %bb.2: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB239_1: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i32 %c, 15
+  %shl = shl nuw nsw i32 1, %0
+  %not = xor i32 %shl, -1
+  %1 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %and = and i32 %1, %shl
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %conv2 = zext i32 %0 to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %conv2
+  %2 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %2, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_mask0_and_32_gpr_brz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_and_32_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    andl $31, %eax
+; X86-NOBMI2-NEXT:    lock btrl %eax, (%edx)
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jae .LBB240_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %return
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB240_1: # %if.then
+; X86-NOBMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_and_32_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    andl $31, %eax
+; X86-BMI2-NEXT:    lock btrl %eax, (%edx)
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jae .LBB240_1
+; X86-BMI2-NEXT:  # %bb.2: # %return
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB240_1: # %if.then
+; X86-BMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_and_32_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $31, %eax
+; X64-NOBMI2-NEXT:    lock btrl %eax, (%rdi)
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    jae .LBB240_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB240_1: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_and_32_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $31, %eax
+; X64-BMI2-NEXT:    lock btrl %eax, (%rdi)
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    jae .LBB240_1
+; X64-BMI2-NEXT:  # %bb.2: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB240_1: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i32 %c, 31
+  %shl = shl nuw i32 1, %rem
+  %not = xor i32 %shl, -1
+  %0 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %shl1 = shl nuw i32 1, %c
+  %and = and i32 %0, %shl1
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %conv = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %conv
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_mask1_and_32_gpr_brz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_and_32_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    andl $31, %eax
+; X86-NOBMI2-NEXT:    lock btrl %eax, (%edx)
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jae .LBB241_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %return
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB241_1: # %if.then
+; X86-NOBMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_and_32_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    andl $31, %eax
+; X86-BMI2-NEXT:    lock btrl %eax, (%edx)
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jae .LBB241_1
+; X86-BMI2-NEXT:  # %bb.2: # %return
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB241_1: # %if.then
+; X86-BMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_and_32_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $31, %eax
+; X64-NOBMI2-NEXT:    lock btrl %eax, (%rdi)
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    jae .LBB241_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB241_1: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_and_32_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $31, %eax
+; X64-BMI2-NEXT:    lock btrl %eax, (%rdi)
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    jae .LBB241_1
+; X64-BMI2-NEXT:  # %bb.2: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB241_1: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %not = xor i32 %shl, -1
+  %0 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %rem = and i32 %c, 31
+  %shl1 = shl nuw i32 1, %rem
+  %and = and i32 %0, %shl1
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %conv = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %conv
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_mask01_and_32_gpr_brz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_and_32_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    andl $31, %eax
+; X86-NOBMI2-NEXT:    lock btrl %eax, (%edx)
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jae .LBB242_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %return
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB242_1: # %if.then
+; X86-NOBMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_and_32_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    andl $31, %eax
+; X86-BMI2-NEXT:    lock btrl %eax, (%edx)
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jae .LBB242_1
+; X86-BMI2-NEXT:  # %bb.2: # %return
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB242_1: # %if.then
+; X86-BMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_and_32_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $31, %eax
+; X64-NOBMI2-NEXT:    lock btrl %eax, (%rdi)
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    jae .LBB242_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB242_1: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_and_32_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $31, %eax
+; X64-BMI2-NEXT:    lock btrl %eax, (%rdi)
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    jae .LBB242_1
+; X64-BMI2-NEXT:  # %bb.2: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB242_1: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i32 %c, 31
+  %shl = shl nuw i32 1, %rem
+  %not = xor i32 %shl, -1
+  %0 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %and = and i32 %0, %shl
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %conv = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %conv
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_blsi_and_32_gpr_brz(ptr %v, i32 %c) {
+; X86-BMI2-LABEL: atomic_blsi_and_32_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    .cfi_offset %esi, -16
+; X86-BMI2-NEXT:    .cfi_offset %edi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    blsil %edx, %edi
+; X86-BMI2-NEXT:    movl %edi, %ecx
+; X86-BMI2-NEXT:    notl %ecx
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB243_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ecx, %ebx
+; X86-BMI2-NEXT:    lock cmpxchgl %ebx, (%esi)
+; X86-BMI2-NEXT:    jne .LBB243_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl $123, %ecx
+; X86-BMI2-NEXT:    testl %edi, %eax
+; X86-BMI2-NEXT:    jne .LBB243_4
+; X86-BMI2-NEXT:  # %bb.3: # %if.then
+; X86-BMI2-NEXT:    movl (%esi,%edx,4), %ecx
+; X86-BMI2-NEXT:  .LBB243_4: # %return
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_and_32_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    blsil %esi, %edx
+; X64-BMI2-NEXT:    movl %edx, %ecx
+; X64-BMI2-NEXT:    notl %ecx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB243_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %r8d
+; X64-BMI2-NEXT:    andl %ecx, %r8d
+; X64-BMI2-NEXT:    lock cmpxchgl %r8d, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB243_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movl $123, %ecx
+; X64-BMI2-NEXT:    testl %edx, %eax
+; X64-BMI2-NEXT:    je .LBB243_3
+; X64-BMI2-NEXT:  # %bb.4: # %return
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB243_3: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %ecx
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %sub = sub i32 0, %c
+  %and = and i32 %sub, %c
+  %not = xor i32 %and, -1
+  %0 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %and3 = and i32 %0, %and
+  %tobool.not = icmp eq i32 %and3, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %idxprom
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_and_32_gpr_brnz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_and_32_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    andl $31, %edx
+; X86-NOBMI2-NEXT:    lock btrl %edx, (%ecx)
+; X86-NOBMI2-NEXT:    jae .LBB244_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X86-NOBMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB244_1:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_and_32_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    andl $31, %edx
+; X86-BMI2-NEXT:    lock btrl %edx, (%ecx)
+; X86-BMI2-NEXT:    jae .LBB244_1
+; X86-BMI2-NEXT:  # %bb.2: # %if.then
+; X86-BMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB244_1:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_and_32_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $31, %eax
+; X64-NOBMI2-NEXT:    lock btrl %eax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB244_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB244_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_and_32_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $31, %eax
+; X64-BMI2-NEXT:    lock btrl %eax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB244_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB244_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %not = xor i32 %shl, -1
+  %0 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %and = and i32 %0, %shl
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %idxprom
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl2_and_32_gpr_brnz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl2_and_32_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $2, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl %esi, %edi
+; X86-NOBMI2-NEXT:    notl %edi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB245_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %edi, %ebx
+; X86-NOBMI2-NEXT:    lock cmpxchgl %ebx, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB245_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    testl %esi, %eax
+; X86-NOBMI2-NEXT:    je .LBB245_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-NOBMI2-NEXT:    jmp .LBB245_5
+; X86-NOBMI2-NEXT:  .LBB245_3:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB245_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl2_and_32_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    .cfi_offset %esi, -16
+; X86-BMI2-NEXT:    .cfi_offset %edi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $2, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %esi
+; X86-BMI2-NEXT:    movl %esi, %edi
+; X86-BMI2-NEXT:    notl %edi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB245_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %edi, %ebx
+; X86-BMI2-NEXT:    lock cmpxchgl %ebx, (%edx)
+; X86-BMI2-NEXT:    jne .LBB245_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    testl %esi, %eax
+; X86-BMI2-NEXT:    je .LBB245_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-BMI2-NEXT:    jmp .LBB245_5
+; X86-BMI2-NEXT:  .LBB245_3:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB245_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl2_and_32_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $2, %edx
+; X64-NOBMI2-NEXT:    shll %cl, %edx
+; X64-NOBMI2-NEXT:    movl %edx, %esi
+; X64-NOBMI2-NEXT:    notl %esi
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB245_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %r8d
+; X64-NOBMI2-NEXT:    andl %esi, %r8d
+; X64-NOBMI2-NEXT:    lock cmpxchgl %r8d, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB245_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    testl %edx, %eax
+; X64-NOBMI2-NEXT:    je .LBB245_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB245_3:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl2_and_32_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $2, %eax
+; X64-BMI2-NEXT:    shlxl %esi, %eax, %ecx
+; X64-BMI2-NEXT:    movl %ecx, %edx
+; X64-BMI2-NEXT:    notl %edx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB245_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %r8d
+; X64-BMI2-NEXT:    andl %edx, %r8d
+; X64-BMI2-NEXT:    lock cmpxchgl %r8d, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB245_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    testl %ecx, %eax
+; X64-BMI2-NEXT:    je .LBB245_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB245_3:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl i32 2, %c
+  %not = xor i32 %shl, -1
+  %0 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %and = and i32 %0, %shl
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %idxprom
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_neq_and_32_gpr_brnz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_and_32_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl $-2, %esi
+; X86-NOBMI2-NEXT:    roll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB246_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edi
+; X86-NOBMI2-NEXT:    andl %esi, %edi
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB246_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl %ecx, %ebx
+; X86-NOBMI2-NEXT:    incb %bl
+; X86-NOBMI2-NEXT:    movzbl %bl, %esi
+; X86-NOBMI2-NEXT:    btl %esi, %eax
+; X86-NOBMI2-NEXT:    jae .LBB246_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-NOBMI2-NEXT:    jmp .LBB246_5
+; X86-NOBMI2-NEXT:  .LBB246_3:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB246_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_and_32_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    .cfi_offset %esi, -16
+; X86-BMI2-NEXT:    .cfi_offset %edi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl $-2, %esi
+; X86-BMI2-NEXT:    roll %cl, %esi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB246_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edi
+; X86-BMI2-NEXT:    andl %esi, %edi
+; X86-BMI2-NEXT:    lock cmpxchgl %edi, (%edx)
+; X86-BMI2-NEXT:    jne .LBB246_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl %ecx, %ebx
+; X86-BMI2-NEXT:    incb %bl
+; X86-BMI2-NEXT:    movzbl %bl, %esi
+; X86-BMI2-NEXT:    btl %esi, %eax
+; X86-BMI2-NEXT:    jae .LBB246_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-BMI2-NEXT:    jmp .LBB246_5
+; X86-BMI2-NEXT:  .LBB246_3:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB246_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_and_32_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %ecx
+; X64-NOBMI2-NEXT:    movl $-2, %edx
+; X64-NOBMI2-NEXT:    roll %cl, %edx
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB246_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %esi
+; X64-NOBMI2-NEXT:    andl %edx, %esi
+; X64-NOBMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB246_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    leal 1(%rcx), %edx
+; X64-NOBMI2-NEXT:    movzbl %dl, %edx
+; X64-NOBMI2-NEXT:    btl %edx, %eax
+; X64-NOBMI2-NEXT:    jae .LBB246_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB246_3:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_and_32_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %ecx
+; X64-BMI2-NEXT:    movl $-2, %edx
+; X64-BMI2-NEXT:    roll %cl, %edx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB246_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %esi
+; X64-BMI2-NEXT:    andl %edx, %esi
+; X64-BMI2-NEXT:    lock cmpxchgl %esi, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB246_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    leal 1(%rcx), %edx
+; X64-BMI2-NEXT:    movzbl %dl, %edx
+; X64-BMI2-NEXT:    btl %edx, %eax
+; X64-BMI2-NEXT:    jae .LBB246_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB246_3:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %not = xor i32 %shl, -1
+  %0 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %add = add i32 %c, 1
+  %shl1 = shl nuw i32 1, %add
+  %and = and i32 %0, %shl1
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %idxprom
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_small_mask_and_32_gpr_brnz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_small_mask_and_32_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $15, %ecx
+; X86-NOBMI2-NEXT:    lock btrl %ecx, (%eax)
+; X86-NOBMI2-NEXT:    jae .LBB247_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X86-NOBMI2-NEXT:    movl (%eax,%ecx,4), %eax
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB247_1:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_small_mask_and_32_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    andl $15, %ecx
+; X86-BMI2-NEXT:    lock btrl %ecx, (%eax)
+; X86-BMI2-NEXT:    jae .LBB247_1
+; X86-BMI2-NEXT:  # %bb.2: # %if.then
+; X86-BMI2-NEXT:    movl (%eax,%ecx,4), %eax
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB247_1:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_small_mask_and_32_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    andl $15, %esi
+; X64-NOBMI2-NEXT:    lock btrl %esi, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB247_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB247_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_small_mask_and_32_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $15, %esi
+; X64-BMI2-NEXT:    lock btrl %esi, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB247_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB247_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = and i32 %c, 15
+  %shl = shl nuw nsw i32 1, %0
+  %not = xor i32 %shl, -1
+  %1 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %and = and i32 %1, %shl
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %conv2 = zext i32 %0 to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %conv2
+  %2 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %2, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_mask0_and_32_gpr_brnz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_and_32_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    andl $31, %edx
+; X86-NOBMI2-NEXT:    lock btrl %edx, (%ecx)
+; X86-NOBMI2-NEXT:    jae .LBB248_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X86-NOBMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB248_1:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_and_32_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    andl $31, %edx
+; X86-BMI2-NEXT:    lock btrl %edx, (%ecx)
+; X86-BMI2-NEXT:    jae .LBB248_1
+; X86-BMI2-NEXT:  # %bb.2: # %if.then
+; X86-BMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB248_1:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_and_32_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $31, %eax
+; X64-NOBMI2-NEXT:    lock btrl %eax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB248_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB248_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_and_32_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $31, %eax
+; X64-BMI2-NEXT:    lock btrl %eax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB248_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB248_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i32 %c, 31
+  %shl = shl nuw i32 1, %rem
+  %not = xor i32 %shl, -1
+  %0 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %shl1 = shl nuw i32 1, %c
+  %and = and i32 %0, %shl1
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %conv = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %conv
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_mask1_and_32_gpr_brnz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_and_32_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    andl $31, %edx
+; X86-NOBMI2-NEXT:    lock btrl %edx, (%ecx)
+; X86-NOBMI2-NEXT:    jae .LBB249_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X86-NOBMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB249_1:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_and_32_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    andl $31, %edx
+; X86-BMI2-NEXT:    lock btrl %edx, (%ecx)
+; X86-BMI2-NEXT:    jae .LBB249_1
+; X86-BMI2-NEXT:  # %bb.2: # %if.then
+; X86-BMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB249_1:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_and_32_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $31, %eax
+; X64-NOBMI2-NEXT:    lock btrl %eax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB249_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB249_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_and_32_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $31, %eax
+; X64-BMI2-NEXT:    lock btrl %eax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB249_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB249_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i32 1, %c
+  %not = xor i32 %shl, -1
+  %0 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %rem = and i32 %c, 31
+  %shl1 = shl nuw i32 1, %rem
+  %and = and i32 %0, %shl1
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %conv = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %conv
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_mask01_and_32_gpr_brnz(ptr %v, i32 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_and_32_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    andl $31, %edx
+; X86-NOBMI2-NEXT:    lock btrl %edx, (%ecx)
+; X86-NOBMI2-NEXT:    jae .LBB250_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X86-NOBMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB250_1:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_and_32_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    andl $31, %edx
+; X86-BMI2-NEXT:    lock btrl %edx, (%ecx)
+; X86-BMI2-NEXT:    jae .LBB250_1
+; X86-BMI2-NEXT:  # %bb.2: # %if.then
+; X86-BMI2-NEXT:    movl (%ecx,%eax,4), %eax
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB250_1:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_and_32_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $31, %eax
+; X64-NOBMI2-NEXT:    lock btrl %eax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB250_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB250_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_and_32_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $31, %eax
+; X64-BMI2-NEXT:    lock btrl %eax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB250_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB250_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i32 %c, 31
+  %shl = shl nuw i32 1, %rem
+  %not = xor i32 %shl, -1
+  %0 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %and = and i32 %0, %shl
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %conv = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %conv
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_blsi_and_32_gpr_brnz(ptr %v, i32 %c) {
+; X86-BMI2-LABEL: atomic_blsi_and_32_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    .cfi_offset %esi, -16
+; X86-BMI2-NEXT:    .cfi_offset %edi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    blsil %ecx, %esi
+; X86-BMI2-NEXT:    movl %esi, %edi
+; X86-BMI2-NEXT:    notl %edi
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB251_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %edi, %ebx
+; X86-BMI2-NEXT:    lock cmpxchgl %ebx, (%edx)
+; X86-BMI2-NEXT:    jne .LBB251_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    testl %esi, %eax
+; X86-BMI2-NEXT:    je .LBB251_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movl (%edx,%ecx,4), %eax
+; X86-BMI2-NEXT:    jmp .LBB251_5
+; X86-BMI2-NEXT:  .LBB251_3:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB251_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_and_32_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    blsil %esi, %ecx
+; X64-BMI2-NEXT:    movl %ecx, %edx
+; X64-BMI2-NEXT:    notl %edx
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB251_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %r8d
+; X64-BMI2-NEXT:    andl %edx, %r8d
+; X64-BMI2-NEXT:    lock cmpxchgl %r8d, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB251_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    testl %ecx, %eax
+; X64-BMI2-NEXT:    je .LBB251_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    movl (%rdi,%rax,4), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB251_3:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %sub = sub i32 0, %c
+  %and = and i32 %sub, %c
+  %not = xor i32 %and, -1
+  %0 = atomicrmw and ptr %v, i32 %not monotonic, align 4
+  %and3 = and i32 %0, %and
+  %tobool.not = icmp eq i32 %and3, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %idxprom = zext i32 %c to i64
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 %idxprom
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_xor_32_const_val(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_xor_32_const_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    lock btcl $4, (%ecx)
+; X86-NOBMI2-NEXT:    setb %al
+; X86-NOBMI2-NEXT:    shll $4, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_xor_32_const_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    xorl %eax, %eax
+; X86-BMI2-NEXT:    lock btcl $4, (%ecx)
+; X86-BMI2-NEXT:    setb %al
+; X86-BMI2-NEXT:    shll $4, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_xor_32_const_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btcl $4, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    shll $4, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_xor_32_const_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btcl $4, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shll $4, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw xor ptr %v, i32 16 monotonic, align 4
+  %and = and i32 %0, 16
+  ret i32 %and
+}
+
+define i32 @atomic_shl1_neq_xor_32_const_val(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_xor_32_const_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%ecx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB253_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    xorl $16, %edx
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edx, (%ecx)
+; X86-NOBMI2-NEXT:    jne .LBB253_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl $32, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_xor_32_const_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB253_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    xorl $16, %edx
+; X86-BMI2-NEXT:    lock cmpxchgl %edx, (%ecx)
+; X86-BMI2-NEXT:    jne .LBB253_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl $32, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_xor_32_const_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB253_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    xorl $16, %ecx
+; X64-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB253_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    andl $32, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_xor_32_const_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB253_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    xorl $16, %ecx
+; X64-BMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB253_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    andl $32, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw xor ptr %v, i32 16 monotonic, align 4
+  %and = and i32 %0, 32
+  ret i32 %and
+}
+
+define i32 @atomic_shl1_xor_32_const_valz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_xor_32_const_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%ecx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB254_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    xorl $16, %edx
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edx, (%ecx)
+; X86-NOBMI2-NEXT:    jne .LBB254_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    testb $16, %al
+; X86-NOBMI2-NEXT:    sete %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_xor_32_const_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB254_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    xorl $16, %edx
+; X86-BMI2-NEXT:    lock cmpxchgl %edx, (%ecx)
+; X86-BMI2-NEXT:    jne .LBB254_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    testb $16, %al
+; X86-BMI2-NEXT:    sete %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_xor_32_const_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB254_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    xorl $16, %ecx
+; X64-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB254_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    testb $16, %al
+; X64-NOBMI2-NEXT:    sete %cl
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_xor_32_const_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB254_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    xorl $16, %ecx
+; X64-BMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB254_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    testb $16, %al
+; X64-BMI2-NEXT:    sete %cl
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw xor ptr %v, i32 16 monotonic, align 4
+  %and = lshr i32 %0, 4
+  %and.lobit = and i32 %and, 1
+  %lnot.ext = xor i32 %and.lobit, 1
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl1_neq_xor_32_const_valz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_xor_32_const_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%ecx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB255_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    xorl $16, %edx
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edx, (%ecx)
+; X86-NOBMI2-NEXT:    jne .LBB255_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    testb $32, %al
+; X86-NOBMI2-NEXT:    sete %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_xor_32_const_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB255_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    xorl $16, %edx
+; X86-BMI2-NEXT:    lock cmpxchgl %edx, (%ecx)
+; X86-BMI2-NEXT:    jne .LBB255_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    testb $32, %al
+; X86-BMI2-NEXT:    sete %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_xor_32_const_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB255_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    xorl $16, %ecx
+; X64-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB255_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    testb $32, %al
+; X64-NOBMI2-NEXT:    sete %cl
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_xor_32_const_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB255_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    xorl $16, %ecx
+; X64-BMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB255_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    testb $32, %al
+; X64-BMI2-NEXT:    sete %cl
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw xor ptr %v, i32 16 monotonic, align 4
+  %and = lshr i32 %0, 5
+  %and.lobit = and i32 %and, 1
+  %lnot.ext = xor i32 %and.lobit, 1
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl1_xor_32_const_valnz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_xor_32_const_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%ecx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB256_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    xorl $16, %edx
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edx, (%ecx)
+; X86-NOBMI2-NEXT:    jne .LBB256_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    shrl $4, %eax
+; X86-NOBMI2-NEXT:    andl $1, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_xor_32_const_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB256_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    xorl $16, %edx
+; X86-BMI2-NEXT:    lock cmpxchgl %edx, (%ecx)
+; X86-BMI2-NEXT:    jne .LBB256_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    shrl $4, %eax
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_xor_32_const_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB256_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    xorl $16, %ecx
+; X64-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB256_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    shrl $4, %eax
+; X64-NOBMI2-NEXT:    andl $1, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_xor_32_const_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB256_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    xorl $16, %ecx
+; X64-BMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB256_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrl $4, %eax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw xor ptr %v, i32 16 monotonic, align 4
+  %and = lshr i32 %0, 4
+  %and.lobit = and i32 %and, 1
+  ret i32 %and.lobit
+}
+
+define i32 @atomic_shl1_neq_xor_32_const_valnz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_xor_32_const_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%ecx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB257_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    xorl $16, %edx
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edx, (%ecx)
+; X86-NOBMI2-NEXT:    jne .LBB257_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    shrl $5, %eax
+; X86-NOBMI2-NEXT:    andl $1, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_xor_32_const_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB257_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    xorl $16, %edx
+; X86-BMI2-NEXT:    lock cmpxchgl %edx, (%ecx)
+; X86-BMI2-NEXT:    jne .LBB257_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    shrl $5, %eax
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_xor_32_const_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB257_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    xorl $16, %ecx
+; X64-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB257_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    shrl $5, %eax
+; X64-NOBMI2-NEXT:    andl $1, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_xor_32_const_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB257_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    xorl $16, %ecx
+; X64-BMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB257_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrl $5, %eax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw xor ptr %v, i32 16 monotonic, align 4
+  %and = lshr i32 %0, 5
+  %and.lobit = and i32 %and, 1
+  ret i32 %and.lobit
+}
+
+define i32 @atomic_shl1_xor_32_const_br(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_xor_32_const_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    lock btcl $4, (%eax)
+; X86-NOBMI2-NEXT:    jae .LBB258_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X86-NOBMI2-NEXT:    movl 16(%eax), %eax
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB258_1:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_xor_32_const_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    lock btcl $4, (%eax)
+; X86-BMI2-NEXT:    jae .LBB258_1
+; X86-BMI2-NEXT:  # %bb.2: # %if.then
+; X86-BMI2-NEXT:    movl 16(%eax), %eax
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB258_1:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_xor_32_const_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    lock btcl $4, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB258_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movl 16(%rdi), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB258_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_xor_32_const_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    lock btcl $4, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB258_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movl 16(%rdi), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB258_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw xor ptr %v, i32 16 monotonic, align 4
+  %and = and i32 %0, 16
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 4
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_neq_xor_32_const_br(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_xor_32_const_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB259_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    xorl $16, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB259_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl $123, %ecx
+; X86-NOBMI2-NEXT:    testb $32, %al
+; X86-NOBMI2-NEXT:    je .LBB259_4
+; X86-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X86-NOBMI2-NEXT:    movl 16(%edx), %ecx
+; X86-NOBMI2-NEXT:  .LBB259_4: # %return
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_xor_32_const_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB259_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ecx
+; X86-BMI2-NEXT:    xorl $16, %ecx
+; X86-BMI2-NEXT:    lock cmpxchgl %ecx, (%edx)
+; X86-BMI2-NEXT:    jne .LBB259_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl $123, %ecx
+; X86-BMI2-NEXT:    testb $32, %al
+; X86-BMI2-NEXT:    je .LBB259_4
+; X86-BMI2-NEXT:  # %bb.3: # %if.then
+; X86-BMI2-NEXT:    movl 16(%edx), %ecx
+; X86-BMI2-NEXT:  .LBB259_4: # %return
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_xor_32_const_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB259_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    xorl $16, %ecx
+; X64-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB259_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movl $123, %ecx
+; X64-NOBMI2-NEXT:    testb $32, %al
+; X64-NOBMI2-NEXT:    je .LBB259_4
+; X64-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X64-NOBMI2-NEXT:    movl 16(%rdi), %ecx
+; X64-NOBMI2-NEXT:  .LBB259_4: # %return
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_xor_32_const_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB259_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    xorl $16, %ecx
+; X64-BMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB259_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movl $123, %ecx
+; X64-BMI2-NEXT:    testb $32, %al
+; X64-BMI2-NEXT:    je .LBB259_4
+; X64-BMI2-NEXT:  # %bb.3: # %if.then
+; X64-BMI2-NEXT:    movl 16(%rdi), %ecx
+; X64-BMI2-NEXT:  .LBB259_4: # %return
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw xor ptr %v, i32 16 monotonic, align 4
+  %and = and i32 %0, 32
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 4
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_xor_32_const_brz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_xor_32_const_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    lock btcl $4, (%ecx)
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jae .LBB260_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %return
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB260_1: # %if.then
+; X86-NOBMI2-NEXT:    movl 16(%ecx), %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_xor_32_const_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    lock btcl $4, (%ecx)
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jae .LBB260_1
+; X86-BMI2-NEXT:  # %bb.2: # %return
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB260_1: # %if.then
+; X86-BMI2-NEXT:    movl 16(%ecx), %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_xor_32_const_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    lock btcl $4, (%rdi)
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    jae .LBB260_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB260_1: # %if.then
+; X64-NOBMI2-NEXT:    movl 16(%rdi), %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_xor_32_const_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    lock btcl $4, (%rdi)
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    jae .LBB260_1
+; X64-BMI2-NEXT:  # %bb.2: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB260_1: # %if.then
+; X64-BMI2-NEXT:    movl 16(%rdi), %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw xor ptr %v, i32 16 monotonic, align 4
+  %and = and i32 %0, 16
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 4
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_neq_xor_32_const_brz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_xor_32_const_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB261_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    xorl $16, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB261_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl $123, %ecx
+; X86-NOBMI2-NEXT:    testb $32, %al
+; X86-NOBMI2-NEXT:    jne .LBB261_4
+; X86-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X86-NOBMI2-NEXT:    movl 16(%edx), %ecx
+; X86-NOBMI2-NEXT:  .LBB261_4: # %return
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_xor_32_const_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB261_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ecx
+; X86-BMI2-NEXT:    xorl $16, %ecx
+; X86-BMI2-NEXT:    lock cmpxchgl %ecx, (%edx)
+; X86-BMI2-NEXT:    jne .LBB261_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl $123, %ecx
+; X86-BMI2-NEXT:    testb $32, %al
+; X86-BMI2-NEXT:    jne .LBB261_4
+; X86-BMI2-NEXT:  # %bb.3: # %if.then
+; X86-BMI2-NEXT:    movl 16(%edx), %ecx
+; X86-BMI2-NEXT:  .LBB261_4: # %return
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_xor_32_const_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB261_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    xorl $16, %ecx
+; X64-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB261_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movl $123, %ecx
+; X64-NOBMI2-NEXT:    testb $32, %al
+; X64-NOBMI2-NEXT:    jne .LBB261_4
+; X64-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X64-NOBMI2-NEXT:    movl 16(%rdi), %ecx
+; X64-NOBMI2-NEXT:  .LBB261_4: # %return
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_xor_32_const_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB261_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    xorl $16, %ecx
+; X64-BMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB261_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movl $123, %ecx
+; X64-BMI2-NEXT:    testb $32, %al
+; X64-BMI2-NEXT:    jne .LBB261_4
+; X64-BMI2-NEXT:  # %bb.3: # %if.then
+; X64-BMI2-NEXT:    movl 16(%rdi), %ecx
+; X64-BMI2-NEXT:  .LBB261_4: # %return
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw xor ptr %v, i32 16 monotonic, align 4
+  %and = and i32 %0, 32
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 4
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_xor_32_const_brnz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_xor_32_const_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    lock btcl $4, (%eax)
+; X86-NOBMI2-NEXT:    jae .LBB262_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X86-NOBMI2-NEXT:    movl 16(%eax), %eax
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB262_1:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_xor_32_const_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    lock btcl $4, (%eax)
+; X86-BMI2-NEXT:    jae .LBB262_1
+; X86-BMI2-NEXT:  # %bb.2: # %if.then
+; X86-BMI2-NEXT:    movl 16(%eax), %eax
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB262_1:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_xor_32_const_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    lock btcl $4, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB262_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movl 16(%rdi), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB262_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_xor_32_const_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    lock btcl $4, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB262_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movl 16(%rdi), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB262_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw xor ptr %v, i32 16 monotonic, align 4
+  %and = and i32 %0, 16
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 4
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_neq_xor_32_const_brnz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_xor_32_const_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB263_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    xorl $16, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB263_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl $123, %ecx
+; X86-NOBMI2-NEXT:    testb $32, %al
+; X86-NOBMI2-NEXT:    je .LBB263_4
+; X86-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X86-NOBMI2-NEXT:    movl 16(%edx), %ecx
+; X86-NOBMI2-NEXT:  .LBB263_4: # %return
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_xor_32_const_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB263_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ecx
+; X86-BMI2-NEXT:    xorl $16, %ecx
+; X86-BMI2-NEXT:    lock cmpxchgl %ecx, (%edx)
+; X86-BMI2-NEXT:    jne .LBB263_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl $123, %ecx
+; X86-BMI2-NEXT:    testb $32, %al
+; X86-BMI2-NEXT:    je .LBB263_4
+; X86-BMI2-NEXT:  # %bb.3: # %if.then
+; X86-BMI2-NEXT:    movl 16(%edx), %ecx
+; X86-BMI2-NEXT:  .LBB263_4: # %return
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_xor_32_const_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB263_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    xorl $16, %ecx
+; X64-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB263_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movl $123, %ecx
+; X64-NOBMI2-NEXT:    testb $32, %al
+; X64-NOBMI2-NEXT:    je .LBB263_4
+; X64-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X64-NOBMI2-NEXT:    movl 16(%rdi), %ecx
+; X64-NOBMI2-NEXT:  .LBB263_4: # %return
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_xor_32_const_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB263_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    xorl $16, %ecx
+; X64-BMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB263_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movl $123, %ecx
+; X64-BMI2-NEXT:    testb $32, %al
+; X64-BMI2-NEXT:    je .LBB263_4
+; X64-BMI2-NEXT:  # %bb.3: # %if.then
+; X64-BMI2-NEXT:    movl 16(%rdi), %ecx
+; X64-BMI2-NEXT:  .LBB263_4: # %return
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw xor ptr %v, i32 16 monotonic, align 4
+  %and = and i32 %0, 32
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 4
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_or_32_const_val(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_or_32_const_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    lock btsl $4, (%ecx)
+; X86-NOBMI2-NEXT:    setb %al
+; X86-NOBMI2-NEXT:    shll $4, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_or_32_const_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    xorl %eax, %eax
+; X86-BMI2-NEXT:    lock btsl $4, (%ecx)
+; X86-BMI2-NEXT:    setb %al
+; X86-BMI2-NEXT:    shll $4, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_or_32_const_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btsl $4, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    shll $4, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_or_32_const_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btsl $4, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shll $4, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw or ptr %v, i32 16 monotonic, align 4
+  %and = and i32 %0, 16
+  ret i32 %and
+}
+
+define i32 @atomic_shl1_neq_or_32_const_val(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_or_32_const_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%ecx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB265_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    orl $16, %edx
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edx, (%ecx)
+; X86-NOBMI2-NEXT:    jne .LBB265_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl $32, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_or_32_const_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB265_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    orl $16, %edx
+; X86-BMI2-NEXT:    lock cmpxchgl %edx, (%ecx)
+; X86-BMI2-NEXT:    jne .LBB265_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl $32, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_or_32_const_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB265_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    orl $16, %ecx
+; X64-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB265_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    andl $32, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_or_32_const_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB265_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    orl $16, %ecx
+; X64-BMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB265_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    andl $32, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw or ptr %v, i32 16 monotonic, align 4
+  %and = and i32 %0, 32
+  ret i32 %and
+}
+
+define i32 @atomic_shl1_or_32_const_valz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_or_32_const_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%ecx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB266_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    orl $16, %edx
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edx, (%ecx)
+; X86-NOBMI2-NEXT:    jne .LBB266_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    testb $16, %al
+; X86-NOBMI2-NEXT:    sete %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_or_32_const_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB266_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    orl $16, %edx
+; X86-BMI2-NEXT:    lock cmpxchgl %edx, (%ecx)
+; X86-BMI2-NEXT:    jne .LBB266_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    testb $16, %al
+; X86-BMI2-NEXT:    sete %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_or_32_const_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB266_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    orl $16, %ecx
+; X64-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB266_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    testb $16, %al
+; X64-NOBMI2-NEXT:    sete %cl
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_or_32_const_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB266_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    orl $16, %ecx
+; X64-BMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB266_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    testb $16, %al
+; X64-BMI2-NEXT:    sete %cl
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw or ptr %v, i32 16 monotonic, align 4
+  %and = lshr i32 %0, 4
+  %and.lobit = and i32 %and, 1
+  %lnot.ext = xor i32 %and.lobit, 1
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl1_neq_or_32_const_valz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_or_32_const_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%ecx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB267_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    orl $16, %edx
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edx, (%ecx)
+; X86-NOBMI2-NEXT:    jne .LBB267_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    testb $32, %al
+; X86-NOBMI2-NEXT:    sete %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_or_32_const_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB267_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    orl $16, %edx
+; X86-BMI2-NEXT:    lock cmpxchgl %edx, (%ecx)
+; X86-BMI2-NEXT:    jne .LBB267_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    testb $32, %al
+; X86-BMI2-NEXT:    sete %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_or_32_const_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB267_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    orl $16, %ecx
+; X64-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB267_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    testb $32, %al
+; X64-NOBMI2-NEXT:    sete %cl
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_or_32_const_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB267_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    orl $16, %ecx
+; X64-BMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB267_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    testb $32, %al
+; X64-BMI2-NEXT:    sete %cl
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw or ptr %v, i32 16 monotonic, align 4
+  %and = lshr i32 %0, 5
+  %and.lobit = and i32 %and, 1
+  %lnot.ext = xor i32 %and.lobit, 1
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl1_or_32_const_valnz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_or_32_const_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%ecx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB268_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    orl $16, %edx
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edx, (%ecx)
+; X86-NOBMI2-NEXT:    jne .LBB268_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    shrl $4, %eax
+; X86-NOBMI2-NEXT:    andl $1, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_or_32_const_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB268_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    orl $16, %edx
+; X86-BMI2-NEXT:    lock cmpxchgl %edx, (%ecx)
+; X86-BMI2-NEXT:    jne .LBB268_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    shrl $4, %eax
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_or_32_const_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB268_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    orl $16, %ecx
+; X64-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB268_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    shrl $4, %eax
+; X64-NOBMI2-NEXT:    andl $1, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_or_32_const_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB268_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    orl $16, %ecx
+; X64-BMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB268_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrl $4, %eax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw or ptr %v, i32 16 monotonic, align 4
+  %and = lshr i32 %0, 4
+  %and.lobit = and i32 %and, 1
+  ret i32 %and.lobit
+}
+
+define i32 @atomic_shl1_neq_or_32_const_valnz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_or_32_const_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%ecx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB269_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    orl $16, %edx
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edx, (%ecx)
+; X86-NOBMI2-NEXT:    jne .LBB269_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    shrl $5, %eax
+; X86-NOBMI2-NEXT:    andl $1, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_or_32_const_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB269_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    orl $16, %edx
+; X86-BMI2-NEXT:    lock cmpxchgl %edx, (%ecx)
+; X86-BMI2-NEXT:    jne .LBB269_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    shrl $5, %eax
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_or_32_const_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB269_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    orl $16, %ecx
+; X64-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB269_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    shrl $5, %eax
+; X64-NOBMI2-NEXT:    andl $1, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_or_32_const_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB269_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    orl $16, %ecx
+; X64-BMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB269_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrl $5, %eax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw or ptr %v, i32 16 monotonic, align 4
+  %and = lshr i32 %0, 5
+  %and.lobit = and i32 %and, 1
+  ret i32 %and.lobit
+}
+
+define i32 @atomic_shl1_or_32_const_br(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_or_32_const_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    lock btsl $4, (%eax)
+; X86-NOBMI2-NEXT:    jae .LBB270_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X86-NOBMI2-NEXT:    movl 16(%eax), %eax
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB270_1:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_or_32_const_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    lock btsl $4, (%eax)
+; X86-BMI2-NEXT:    jae .LBB270_1
+; X86-BMI2-NEXT:  # %bb.2: # %if.then
+; X86-BMI2-NEXT:    movl 16(%eax), %eax
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB270_1:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_or_32_const_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    lock btsl $4, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB270_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movl 16(%rdi), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB270_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_or_32_const_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    lock btsl $4, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB270_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movl 16(%rdi), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB270_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw or ptr %v, i32 16 monotonic, align 4
+  %and = and i32 %0, 16
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 4
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_neq_or_32_const_br(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_or_32_const_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB271_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    orl $16, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB271_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl $123, %ecx
+; X86-NOBMI2-NEXT:    testb $32, %al
+; X86-NOBMI2-NEXT:    je .LBB271_4
+; X86-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X86-NOBMI2-NEXT:    movl 16(%edx), %ecx
+; X86-NOBMI2-NEXT:  .LBB271_4: # %return
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_or_32_const_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB271_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ecx
+; X86-BMI2-NEXT:    orl $16, %ecx
+; X86-BMI2-NEXT:    lock cmpxchgl %ecx, (%edx)
+; X86-BMI2-NEXT:    jne .LBB271_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl $123, %ecx
+; X86-BMI2-NEXT:    testb $32, %al
+; X86-BMI2-NEXT:    je .LBB271_4
+; X86-BMI2-NEXT:  # %bb.3: # %if.then
+; X86-BMI2-NEXT:    movl 16(%edx), %ecx
+; X86-BMI2-NEXT:  .LBB271_4: # %return
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_or_32_const_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB271_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    orl $16, %ecx
+; X64-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB271_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movl $123, %ecx
+; X64-NOBMI2-NEXT:    testb $32, %al
+; X64-NOBMI2-NEXT:    je .LBB271_4
+; X64-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X64-NOBMI2-NEXT:    movl 16(%rdi), %ecx
+; X64-NOBMI2-NEXT:  .LBB271_4: # %return
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_or_32_const_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB271_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    orl $16, %ecx
+; X64-BMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB271_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movl $123, %ecx
+; X64-BMI2-NEXT:    testb $32, %al
+; X64-BMI2-NEXT:    je .LBB271_4
+; X64-BMI2-NEXT:  # %bb.3: # %if.then
+; X64-BMI2-NEXT:    movl 16(%rdi), %ecx
+; X64-BMI2-NEXT:  .LBB271_4: # %return
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw or ptr %v, i32 16 monotonic, align 4
+  %and = and i32 %0, 32
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 4
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_or_32_const_brz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_or_32_const_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    lock btsl $4, (%ecx)
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jae .LBB272_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %return
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB272_1: # %if.then
+; X86-NOBMI2-NEXT:    movl 16(%ecx), %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_or_32_const_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    lock btsl $4, (%ecx)
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jae .LBB272_1
+; X86-BMI2-NEXT:  # %bb.2: # %return
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB272_1: # %if.then
+; X86-BMI2-NEXT:    movl 16(%ecx), %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_or_32_const_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    lock btsl $4, (%rdi)
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    jae .LBB272_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB272_1: # %if.then
+; X64-NOBMI2-NEXT:    movl 16(%rdi), %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_or_32_const_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    lock btsl $4, (%rdi)
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    jae .LBB272_1
+; X64-BMI2-NEXT:  # %bb.2: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB272_1: # %if.then
+; X64-BMI2-NEXT:    movl 16(%rdi), %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw or ptr %v, i32 16 monotonic, align 4
+  %and = and i32 %0, 16
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 4
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_neq_or_32_const_brz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_or_32_const_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB273_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    orl $16, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB273_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl $123, %ecx
+; X86-NOBMI2-NEXT:    testb $32, %al
+; X86-NOBMI2-NEXT:    jne .LBB273_4
+; X86-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X86-NOBMI2-NEXT:    movl 16(%edx), %ecx
+; X86-NOBMI2-NEXT:  .LBB273_4: # %return
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_or_32_const_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB273_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ecx
+; X86-BMI2-NEXT:    orl $16, %ecx
+; X86-BMI2-NEXT:    lock cmpxchgl %ecx, (%edx)
+; X86-BMI2-NEXT:    jne .LBB273_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl $123, %ecx
+; X86-BMI2-NEXT:    testb $32, %al
+; X86-BMI2-NEXT:    jne .LBB273_4
+; X86-BMI2-NEXT:  # %bb.3: # %if.then
+; X86-BMI2-NEXT:    movl 16(%edx), %ecx
+; X86-BMI2-NEXT:  .LBB273_4: # %return
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_or_32_const_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB273_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    orl $16, %ecx
+; X64-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB273_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movl $123, %ecx
+; X64-NOBMI2-NEXT:    testb $32, %al
+; X64-NOBMI2-NEXT:    jne .LBB273_4
+; X64-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X64-NOBMI2-NEXT:    movl 16(%rdi), %ecx
+; X64-NOBMI2-NEXT:  .LBB273_4: # %return
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_or_32_const_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB273_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    orl $16, %ecx
+; X64-BMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB273_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movl $123, %ecx
+; X64-BMI2-NEXT:    testb $32, %al
+; X64-BMI2-NEXT:    jne .LBB273_4
+; X64-BMI2-NEXT:  # %bb.3: # %if.then
+; X64-BMI2-NEXT:    movl 16(%rdi), %ecx
+; X64-BMI2-NEXT:  .LBB273_4: # %return
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw or ptr %v, i32 16 monotonic, align 4
+  %and = and i32 %0, 32
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 4
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_or_32_const_brnz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_or_32_const_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    lock btsl $4, (%eax)
+; X86-NOBMI2-NEXT:    jae .LBB274_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X86-NOBMI2-NEXT:    movl 16(%eax), %eax
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB274_1:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_or_32_const_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    lock btsl $4, (%eax)
+; X86-BMI2-NEXT:    jae .LBB274_1
+; X86-BMI2-NEXT:  # %bb.2: # %if.then
+; X86-BMI2-NEXT:    movl 16(%eax), %eax
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB274_1:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_or_32_const_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    lock btsl $4, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB274_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movl 16(%rdi), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB274_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_or_32_const_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    lock btsl $4, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB274_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movl 16(%rdi), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB274_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw or ptr %v, i32 16 monotonic, align 4
+  %and = and i32 %0, 16
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 4
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_neq_or_32_const_brnz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_or_32_const_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB275_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    orl $16, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB275_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl $123, %ecx
+; X86-NOBMI2-NEXT:    testb $32, %al
+; X86-NOBMI2-NEXT:    je .LBB275_4
+; X86-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X86-NOBMI2-NEXT:    movl 16(%edx), %ecx
+; X86-NOBMI2-NEXT:  .LBB275_4: # %return
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_or_32_const_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB275_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ecx
+; X86-BMI2-NEXT:    orl $16, %ecx
+; X86-BMI2-NEXT:    lock cmpxchgl %ecx, (%edx)
+; X86-BMI2-NEXT:    jne .LBB275_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl $123, %ecx
+; X86-BMI2-NEXT:    testb $32, %al
+; X86-BMI2-NEXT:    je .LBB275_4
+; X86-BMI2-NEXT:  # %bb.3: # %if.then
+; X86-BMI2-NEXT:    movl 16(%edx), %ecx
+; X86-BMI2-NEXT:  .LBB275_4: # %return
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_or_32_const_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB275_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    orl $16, %ecx
+; X64-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB275_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movl $123, %ecx
+; X64-NOBMI2-NEXT:    testb $32, %al
+; X64-NOBMI2-NEXT:    je .LBB275_4
+; X64-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X64-NOBMI2-NEXT:    movl 16(%rdi), %ecx
+; X64-NOBMI2-NEXT:  .LBB275_4: # %return
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_or_32_const_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB275_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    orl $16, %ecx
+; X64-BMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB275_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movl $123, %ecx
+; X64-BMI2-NEXT:    testb $32, %al
+; X64-BMI2-NEXT:    je .LBB275_4
+; X64-BMI2-NEXT:  # %bb.3: # %if.then
+; X64-BMI2-NEXT:    movl 16(%rdi), %ecx
+; X64-BMI2-NEXT:  .LBB275_4: # %return
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw or ptr %v, i32 16 monotonic, align 4
+  %and = and i32 %0, 32
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 4
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_and_32_const_val(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_and_32_const_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    xorl %eax, %eax
+; X86-NOBMI2-NEXT:    lock btrl $4, (%ecx)
+; X86-NOBMI2-NEXT:    setb %al
+; X86-NOBMI2-NEXT:    shll $4, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_and_32_const_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    xorl %eax, %eax
+; X86-BMI2-NEXT:    lock btrl $4, (%ecx)
+; X86-BMI2-NEXT:    setb %al
+; X86-BMI2-NEXT:    shll $4, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_and_32_const_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btrl $4, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    shll $4, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_and_32_const_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btrl $4, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shll $4, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw and ptr %v, i32 -17 monotonic, align 4
+  %and = and i32 %0, 16
+  ret i32 %and
+}
+
+define i32 @atomic_shl1_neq_and_32_const_val(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_and_32_const_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%ecx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB277_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    andl $-17, %edx
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edx, (%ecx)
+; X86-NOBMI2-NEXT:    jne .LBB277_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl $32, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_and_32_const_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB277_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    andl $-17, %edx
+; X86-BMI2-NEXT:    lock cmpxchgl %edx, (%ecx)
+; X86-BMI2-NEXT:    jne .LBB277_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl $32, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_and_32_const_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB277_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    andl $-17, %ecx
+; X64-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB277_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    andl $32, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_and_32_const_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB277_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    andl $-17, %ecx
+; X64-BMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB277_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    andl $32, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw and ptr %v, i32 -17 monotonic, align 4
+  %and = and i32 %0, 32
+  ret i32 %and
+}
+
+define i32 @atomic_shl1_and_32_const_valz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_and_32_const_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%ecx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB278_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    andl $-17, %edx
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edx, (%ecx)
+; X86-NOBMI2-NEXT:    jne .LBB278_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    testb $16, %al
+; X86-NOBMI2-NEXT:    sete %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_and_32_const_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB278_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    andl $-17, %edx
+; X86-BMI2-NEXT:    lock cmpxchgl %edx, (%ecx)
+; X86-BMI2-NEXT:    jne .LBB278_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    testb $16, %al
+; X86-BMI2-NEXT:    sete %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_and_32_const_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB278_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    andl $-17, %ecx
+; X64-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB278_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    testb $16, %al
+; X64-NOBMI2-NEXT:    sete %cl
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_and_32_const_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB278_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    andl $-17, %ecx
+; X64-BMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB278_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    testb $16, %al
+; X64-BMI2-NEXT:    sete %cl
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw and ptr %v, i32 -17 monotonic, align 4
+  %and = lshr i32 %0, 4
+  %and.lobit = and i32 %and, 1
+  %lnot.ext = xor i32 %and.lobit, 1
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl1_neq_and_32_const_valz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_and_32_const_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%ecx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB279_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    andl $-17, %edx
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edx, (%ecx)
+; X86-NOBMI2-NEXT:    jne .LBB279_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    testb $32, %al
+; X86-NOBMI2-NEXT:    sete %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_and_32_const_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB279_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    andl $-17, %edx
+; X86-BMI2-NEXT:    lock cmpxchgl %edx, (%ecx)
+; X86-BMI2-NEXT:    jne .LBB279_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    testb $32, %al
+; X86-BMI2-NEXT:    sete %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_and_32_const_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB279_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    andl $-17, %ecx
+; X64-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB279_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    testb $32, %al
+; X64-NOBMI2-NEXT:    sete %cl
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_and_32_const_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB279_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    andl $-17, %ecx
+; X64-BMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB279_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    testb $32, %al
+; X64-BMI2-NEXT:    sete %cl
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw and ptr %v, i32 -17 monotonic, align 4
+  %and = lshr i32 %0, 5
+  %and.lobit = and i32 %and, 1
+  %lnot.ext = xor i32 %and.lobit, 1
+  ret i32 %lnot.ext
+}
+
+define i32 @atomic_shl1_and_32_const_valnz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_and_32_const_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%ecx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB280_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    andl $-17, %edx
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edx, (%ecx)
+; X86-NOBMI2-NEXT:    jne .LBB280_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    shrl $4, %eax
+; X86-NOBMI2-NEXT:    andl $1, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_and_32_const_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB280_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    andl $-17, %edx
+; X86-BMI2-NEXT:    lock cmpxchgl %edx, (%ecx)
+; X86-BMI2-NEXT:    jne .LBB280_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    shrl $4, %eax
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_and_32_const_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB280_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    andl $-17, %ecx
+; X64-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB280_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    shrl $4, %eax
+; X64-NOBMI2-NEXT:    andl $1, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_and_32_const_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB280_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    andl $-17, %ecx
+; X64-BMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB280_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrl $4, %eax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw and ptr %v, i32 -17 monotonic, align 4
+  %and = lshr i32 %0, 4
+  %and.lobit = and i32 %and, 1
+  ret i32 %and.lobit
+}
+
+define i32 @atomic_shl1_neq_and_32_const_valnz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_and_32_const_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%ecx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB281_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:    andl $-17, %edx
+; X86-NOBMI2-NEXT:    lock cmpxchgl %edx, (%ecx)
+; X86-NOBMI2-NEXT:    jne .LBB281_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    shrl $5, %eax
+; X86-NOBMI2-NEXT:    andl $1, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_and_32_const_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%ecx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB281_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %edx
+; X86-BMI2-NEXT:    andl $-17, %edx
+; X86-BMI2-NEXT:    lock cmpxchgl %edx, (%ecx)
+; X86-BMI2-NEXT:    jne .LBB281_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    shrl $5, %eax
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_and_32_const_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB281_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    andl $-17, %ecx
+; X64-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB281_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    shrl $5, %eax
+; X64-NOBMI2-NEXT:    andl $1, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_and_32_const_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB281_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    andl $-17, %ecx
+; X64-BMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB281_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrl $5, %eax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw and ptr %v, i32 -17 monotonic, align 4
+  %and = lshr i32 %0, 5
+  %and.lobit = and i32 %and, 1
+  ret i32 %and.lobit
+}
+
+define i32 @atomic_shl1_and_32_const_br(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_and_32_const_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    lock btrl $4, (%eax)
+; X86-NOBMI2-NEXT:    jae .LBB282_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X86-NOBMI2-NEXT:    movl 16(%eax), %eax
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB282_1:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_and_32_const_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    lock btrl $4, (%eax)
+; X86-BMI2-NEXT:    jae .LBB282_1
+; X86-BMI2-NEXT:  # %bb.2: # %if.then
+; X86-BMI2-NEXT:    movl 16(%eax), %eax
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB282_1:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_and_32_const_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    lock btrl $4, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB282_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movl 16(%rdi), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB282_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_and_32_const_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    lock btrl $4, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB282_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movl 16(%rdi), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB282_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw and ptr %v, i32 -17 monotonic, align 4
+  %and = and i32 %0, 16
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 4
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_neq_and_32_const_br(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_and_32_const_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB283_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    andl $-17, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB283_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl $123, %ecx
+; X86-NOBMI2-NEXT:    testb $32, %al
+; X86-NOBMI2-NEXT:    je .LBB283_4
+; X86-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X86-NOBMI2-NEXT:    movl 16(%edx), %ecx
+; X86-NOBMI2-NEXT:  .LBB283_4: # %return
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_and_32_const_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB283_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ecx
+; X86-BMI2-NEXT:    andl $-17, %ecx
+; X86-BMI2-NEXT:    lock cmpxchgl %ecx, (%edx)
+; X86-BMI2-NEXT:    jne .LBB283_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl $123, %ecx
+; X86-BMI2-NEXT:    testb $32, %al
+; X86-BMI2-NEXT:    je .LBB283_4
+; X86-BMI2-NEXT:  # %bb.3: # %if.then
+; X86-BMI2-NEXT:    movl 16(%edx), %ecx
+; X86-BMI2-NEXT:  .LBB283_4: # %return
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_and_32_const_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB283_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    andl $-17, %ecx
+; X64-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB283_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movl $123, %ecx
+; X64-NOBMI2-NEXT:    testb $32, %al
+; X64-NOBMI2-NEXT:    je .LBB283_4
+; X64-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X64-NOBMI2-NEXT:    movl 16(%rdi), %ecx
+; X64-NOBMI2-NEXT:  .LBB283_4: # %return
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_and_32_const_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB283_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    andl $-17, %ecx
+; X64-BMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB283_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movl $123, %ecx
+; X64-BMI2-NEXT:    testb $32, %al
+; X64-BMI2-NEXT:    je .LBB283_4
+; X64-BMI2-NEXT:  # %bb.3: # %if.then
+; X64-BMI2-NEXT:    movl 16(%rdi), %ecx
+; X64-BMI2-NEXT:  .LBB283_4: # %return
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw and ptr %v, i32 -17 monotonic, align 4
+  %and = and i32 %0, 32
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 4
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_and_32_const_brz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_and_32_const_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    lock btrl $4, (%ecx)
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jae .LBB284_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %return
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB284_1: # %if.then
+; X86-NOBMI2-NEXT:    movl 16(%ecx), %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_and_32_const_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    lock btrl $4, (%ecx)
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jae .LBB284_1
+; X86-BMI2-NEXT:  # %bb.2: # %return
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB284_1: # %if.then
+; X86-BMI2-NEXT:    movl 16(%ecx), %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_and_32_const_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    lock btrl $4, (%rdi)
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    jae .LBB284_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB284_1: # %if.then
+; X64-NOBMI2-NEXT:    movl 16(%rdi), %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_and_32_const_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    lock btrl $4, (%rdi)
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    jae .LBB284_1
+; X64-BMI2-NEXT:  # %bb.2: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB284_1: # %if.then
+; X64-BMI2-NEXT:    movl 16(%rdi), %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw and ptr %v, i32 -17 monotonic, align 4
+  %and = and i32 %0, 16
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 4
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_neq_and_32_const_brz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_and_32_const_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB285_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    andl $-17, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB285_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl $123, %ecx
+; X86-NOBMI2-NEXT:    testb $32, %al
+; X86-NOBMI2-NEXT:    jne .LBB285_4
+; X86-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X86-NOBMI2-NEXT:    movl 16(%edx), %ecx
+; X86-NOBMI2-NEXT:  .LBB285_4: # %return
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_and_32_const_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB285_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ecx
+; X86-BMI2-NEXT:    andl $-17, %ecx
+; X86-BMI2-NEXT:    lock cmpxchgl %ecx, (%edx)
+; X86-BMI2-NEXT:    jne .LBB285_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl $123, %ecx
+; X86-BMI2-NEXT:    testb $32, %al
+; X86-BMI2-NEXT:    jne .LBB285_4
+; X86-BMI2-NEXT:  # %bb.3: # %if.then
+; X86-BMI2-NEXT:    movl 16(%edx), %ecx
+; X86-BMI2-NEXT:  .LBB285_4: # %return
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_and_32_const_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB285_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    andl $-17, %ecx
+; X64-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB285_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movl $123, %ecx
+; X64-NOBMI2-NEXT:    testb $32, %al
+; X64-NOBMI2-NEXT:    jne .LBB285_4
+; X64-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X64-NOBMI2-NEXT:    movl 16(%rdi), %ecx
+; X64-NOBMI2-NEXT:  .LBB285_4: # %return
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_and_32_const_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB285_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    andl $-17, %ecx
+; X64-BMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB285_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movl $123, %ecx
+; X64-BMI2-NEXT:    testb $32, %al
+; X64-BMI2-NEXT:    jne .LBB285_4
+; X64-BMI2-NEXT:  # %bb.3: # %if.then
+; X64-BMI2-NEXT:    movl 16(%rdi), %ecx
+; X64-BMI2-NEXT:  .LBB285_4: # %return
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw and ptr %v, i32 -17 monotonic, align 4
+  %and = and i32 %0, 32
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 4
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_and_32_const_brnz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_and_32_const_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    lock btrl $4, (%eax)
+; X86-NOBMI2-NEXT:    jae .LBB286_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X86-NOBMI2-NEXT:    movl 16(%eax), %eax
+; X86-NOBMI2-NEXT:    retl
+; X86-NOBMI2-NEXT:  .LBB286_1:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_and_32_const_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    lock btrl $4, (%eax)
+; X86-BMI2-NEXT:    jae .LBB286_1
+; X86-BMI2-NEXT:  # %bb.2: # %if.then
+; X86-BMI2-NEXT:    movl 16(%eax), %eax
+; X86-BMI2-NEXT:    retl
+; X86-BMI2-NEXT:  .LBB286_1:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_and_32_const_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    lock btrl $4, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB286_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movl 16(%rdi), %eax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB286_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_and_32_const_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    lock btrl $4, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB286_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movl 16(%rdi), %eax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB286_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw and ptr %v, i32 -17 monotonic, align 4
+  %and = and i32 %0, 16
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 4
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i32 @atomic_shl1_neq_and_32_const_brnz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_and_32_const_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NOBMI2-NEXT:    movl (%edx), %eax
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB287_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ecx
+; X86-NOBMI2-NEXT:    andl $-17, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%edx)
+; X86-NOBMI2-NEXT:    jne .LBB287_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl $123, %ecx
+; X86-NOBMI2-NEXT:    testb $32, %al
+; X86-NOBMI2-NEXT:    je .LBB287_4
+; X86-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X86-NOBMI2-NEXT:    movl 16(%edx), %ecx
+; X86-NOBMI2-NEXT:  .LBB287_4: # %return
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_and_32_const_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-BMI2-NEXT:    movl (%edx), %eax
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB287_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ecx
+; X86-BMI2-NEXT:    andl $-17, %ecx
+; X86-BMI2-NEXT:    lock cmpxchgl %ecx, (%edx)
+; X86-BMI2-NEXT:    jne .LBB287_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl $123, %ecx
+; X86-BMI2-NEXT:    testb $32, %al
+; X86-BMI2-NEXT:    je .LBB287_4
+; X86-BMI2-NEXT:  # %bb.3: # %if.then
+; X86-BMI2-NEXT:    movl 16(%edx), %ecx
+; X86-BMI2-NEXT:  .LBB287_4: # %return
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_and_32_const_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl (%rdi), %eax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB287_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movl %eax, %ecx
+; X64-NOBMI2-NEXT:    andl $-17, %ecx
+; X64-NOBMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB287_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movl $123, %ecx
+; X64-NOBMI2-NEXT:    testb $32, %al
+; X64-NOBMI2-NEXT:    je .LBB287_4
+; X64-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X64-NOBMI2-NEXT:    movl 16(%rdi), %ecx
+; X64-NOBMI2-NEXT:  .LBB287_4: # %return
+; X64-NOBMI2-NEXT:    movl %ecx, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_and_32_const_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl (%rdi), %eax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB287_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movl %eax, %ecx
+; X64-BMI2-NEXT:    andl $-17, %ecx
+; X64-BMI2-NEXT:    lock cmpxchgl %ecx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB287_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movl $123, %ecx
+; X64-BMI2-NEXT:    testb $32, %al
+; X64-BMI2-NEXT:    je .LBB287_4
+; X64-BMI2-NEXT:  # %bb.3: # %if.then
+; X64-BMI2-NEXT:    movl 16(%rdi), %ecx
+; X64-BMI2-NEXT:  .LBB287_4: # %return
+; X64-BMI2-NEXT:    movl %ecx, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw and ptr %v, i32 -17 monotonic, align 4
+  %and = and i32 %0, 32
+  %tobool.not = icmp eq i32 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i32, ptr %v, i64 4
+  %1 = load i32, ptr %arrayidx, align 4
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i32 [ %1, %if.then ], [ 123, %entry ]
+  ret i32 %retval.0
+}
+
+define i64 @atomic_shl1_xor_64_gpr_val(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_xor_64_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB288_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB288_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB288_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    xorl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB288_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edi, %eax
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_xor_64_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB288_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB288_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB288_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    xorl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB288_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    andl %edi, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_xor_64_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    andl $63, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btcq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $rcx
+; X64-NOBMI2-NEXT:    shlq %cl, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_xor_64_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $63, %esi
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btcq %rsi, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %0 = atomicrmw xor ptr %v, i64 %shl monotonic, align 8
+  %and = and i64 %0, %shl
+  ret i64 %and
+}
+
+define i64 @atomic_shl2_xor_64_gpr_val(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl2_xor_64_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl $2, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB289_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB289_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB289_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    xorl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB289_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edi, %eax
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl2_xor_64_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl $2, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB289_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB289_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB289_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    xorl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB289_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    andl %edi, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl2_xor_64_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl $2, %edx
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $rcx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB289_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rcx
+; X64-NOBMI2-NEXT:    xorq %rdx, %rcx
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB289_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    andq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl2_xor_64_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $2, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB289_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    xorq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB289_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    andq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl i64 2, %c
+  %0 = atomicrmw xor ptr %v, i64 %shl monotonic, align 8
+  %and = and i64 %0, %shl
+  ret i64 %and
+}
+
+define i64 @atomic_shl1_neq_xor_64_gpr_val(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_xor_64_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB290_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB290_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB290_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    xorl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB290_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    incb %cl
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:    shldl %cl, %esi, %edi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB290_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    movl %esi, %edi
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:  .LBB290_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edi, %edx
+; X86-NOBMI2-NEXT:    andl %esi, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_xor_64_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB290_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB290_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB290_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    xorl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB290_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    incb %cl
+; X86-BMI2-NEXT:    movl $1, %edi
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    shldl %cl, %edi, %esi
+; X86-BMI2-NEXT:    shlxl %ecx, %edi, %edi
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB290_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    movl %edi, %esi
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:  .LBB290_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %esi, %edx
+; X86-BMI2-NEXT:    andl %edi, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_xor_64_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB290_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    xorq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB290_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    incb %cl
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $rcx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    andq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_xor_64_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB290_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    xorq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB290_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    incb %sil
+; X64-BMI2-NEXT:    movl $1, %ecx
+; X64-BMI2-NEXT:    shlxq %rsi, %rcx, %rcx
+; X64-BMI2-NEXT:    andq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %0 = atomicrmw xor ptr %v, i64 %shl monotonic, align 8
+  %add = add i64 %c, 1
+  %shl1 = shl nuw i64 1, %add
+  %and = and i64 %0, %shl1
+  ret i64 %and
+}
+
+define i64 @atomic_shl1_small_mask_xor_64_gpr_val(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_small_mask_xor_64_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB291_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %esi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB291_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %esi, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_small_mask_xor_64_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    .cfi_offset %esi, -16
+; X86-BMI2-NEXT:    .cfi_offset %edi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl $1, %ecx
+; X86-BMI2-NEXT:    shlxl %eax, %ecx, %edi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB291_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %edi, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB291_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %edi, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_small_mask_xor_64_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    andl $31, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btcq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $rcx
+; X64-NOBMI2-NEXT:    shlq %cl, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_small_mask_xor_64_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $31, %esi
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btcq %rsi, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 31
+  %shl = shl nuw nsw i64 1, %rem
+  %0 = atomicrmw xor ptr %v, i64 %shl monotonic, align 8
+  %and = and i64 %0, %shl
+  ret i64 %and
+}
+
+define i64 @atomic_shl1_mask0_xor_64_gpr_val(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_xor_64_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB292_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB292_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB292_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    xorl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB292_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    shldl %cl, %esi, %edi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB292_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    movl %esi, %edi
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:  .LBB292_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edi, %edx
+; X86-NOBMI2-NEXT:    andl %esi, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_xor_64_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB292_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB292_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB292_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    xorl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB292_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl $1, %edi
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    shldl %cl, %edi, %esi
+; X86-BMI2-NEXT:    shlxl %ecx, %edi, %edi
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB292_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    movl %edi, %esi
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:  .LBB292_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %esi, %edx
+; X86-BMI2-NEXT:    andl %edi, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_xor_64_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    andl $63, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btcq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $rcx
+; X64-NOBMI2-NEXT:    shlq %cl, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_xor_64_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $63, %esi
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btcq %rsi, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 63
+  %shl = shl nuw i64 1, %rem
+  %0 = atomicrmw xor ptr %v, i64 %shl monotonic, align 8
+  %shl1 = shl nuw i64 1, %c
+  %and = and i64 %0, %shl1
+  ret i64 %and
+}
+
+define i64 @atomic_shl1_mask1_xor_64_gpr_val(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_xor_64_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB293_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB293_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB293_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    xorl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB293_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    shldl %cl, %esi, %edi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB293_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    movl %esi, %edi
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:  .LBB293_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edi, %edx
+; X86-NOBMI2-NEXT:    andl %esi, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_xor_64_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB293_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB293_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB293_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    xorl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB293_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl $1, %edi
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    shldl %cl, %edi, %esi
+; X86-BMI2-NEXT:    shlxl %ecx, %edi, %edi
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB293_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    movl %edi, %esi
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:  .LBB293_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %esi, %edx
+; X86-BMI2-NEXT:    andl %edi, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_xor_64_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    andl $63, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btcq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $rcx
+; X64-NOBMI2-NEXT:    shlq %cl, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_xor_64_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $63, %esi
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btcq %rsi, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %0 = atomicrmw xor ptr %v, i64 %shl monotonic, align 8
+  %rem = and i64 %c, 63
+  %shl1 = shl nuw i64 1, %rem
+  %and = and i64 %0, %shl1
+  ret i64 %and
+}
+
+define i64 @atomic_shl1_mask01_xor_64_gpr_val(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_xor_64_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB294_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB294_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB294_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    xorl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB294_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edi, %eax
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_xor_64_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB294_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB294_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB294_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    xorl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB294_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    andl %edi, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_xor_64_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    andl $63, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btcq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $rcx
+; X64-NOBMI2-NEXT:    shlq %cl, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_xor_64_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $63, %esi
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btcq %rsi, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 63
+  %shl = shl nuw i64 1, %rem
+  %0 = atomicrmw xor ptr %v, i64 %shl monotonic, align 8
+  %and = and i64 %0, %shl
+  ret i64 %and
+}
+
+define i64 @atomic_blsi_xor_64_gpr_val(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_blsi_xor_64_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:    movl %eax, %ebp
+; X86-NOBMI2-NEXT:    negl %ebp
+; X86-NOBMI2-NEXT:    sbbl %ecx, %esi
+; X86-NOBMI2-NEXT:    andl %ecx, %esi
+; X86-NOBMI2-NEXT:    andl %eax, %ebp
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB295_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    xorl %esi, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB295_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %ebp, %eax
+; X86-NOBMI2-NEXT:    andl %esi, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_blsi_xor_64_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    movl %eax, %ebp
+; X86-BMI2-NEXT:    negl %ebp
+; X86-BMI2-NEXT:    sbbl %ecx, %esi
+; X86-BMI2-NEXT:    andl %ecx, %esi
+; X86-BMI2-NEXT:    andl %eax, %ebp
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB295_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    xorl %esi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB295_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    andl %esi, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_xor_64_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    blsiq %rsi, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB295_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    xorq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB295_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    andq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %sub = sub i64 0, %c
+  %and = and i64 %sub, %c
+  %0 = atomicrmw xor ptr %v, i64 %and monotonic, align 8
+  %and3 = and i64 %0, %and
+  ret i64 %and3
+}
+
+define i64 @atomic_shl1_xor_64_gpr_valz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_xor_64_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB296_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB296_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB296_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    xorl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB296_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    notl %eax
+; X86-NOBMI2-NEXT:    notl %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-NOBMI2-NEXT:    shrl %cl, %edx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    jne .LBB296_6
+; X86-NOBMI2-NEXT:  # %bb.5: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:  .LBB296_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl $1, %edx
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_xor_64_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB296_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB296_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB296_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    xorl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB296_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    notl %eax
+; X86-BMI2-NEXT:    notl %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB296_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    shrxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:  .LBB296_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_xor_64_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB296_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    xorq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB296_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btq %rcx, %rax
+; X64-NOBMI2-NEXT:    setae %dl
+; X64-NOBMI2-NEXT:    movq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_xor_64_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB296_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    xorq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB296_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    btq %rsi, %rax
+; X64-BMI2-NEXT:    setae %cl
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %0 = atomicrmw xor ptr %v, i64 %shl monotonic, align 8
+  %1 = xor i64 %0, -1
+  %2 = lshr i64 %1, %c
+  %conv = and i64 %2, 1
+  ret i64 %conv
+}
+
+define i64 @atomic_shl2_xor_64_gpr_valz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl2_xor_64_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl $2, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB297_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB297_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB297_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    xorl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB297_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edi, %eax
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    sete %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl2_xor_64_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl $2, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB297_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB297_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB297_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    xorl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB297_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    andl %edi, %edx
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    sete %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl2_xor_64_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl $2, %edx
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $rcx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB297_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rcx
+; X64-NOBMI2-NEXT:    xorq %rdx, %rcx
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB297_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    testq %rdx, %rax
+; X64-NOBMI2-NEXT:    sete %cl
+; X64-NOBMI2-NEXT:    movq %rcx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl2_xor_64_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $2, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rdx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB297_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rcx
+; X64-BMI2-NEXT:    xorq %rdx, %rcx
+; X64-BMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB297_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    testq %rdx, %rax
+; X64-BMI2-NEXT:    sete %cl
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl i64 2, %c
+  %0 = atomicrmw xor ptr %v, i64 %shl monotonic, align 8
+  %and = and i64 %0, %shl
+  %tobool.not = icmp eq i64 %and, 0
+  %conv = zext i1 %tobool.not to i64
+  ret i64 %conv
+}
+
+define i64 @atomic_shl1_neq_xor_64_gpr_valz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_xor_64_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB298_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB298_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB298_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    xorl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB298_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    notl %eax
+; X86-NOBMI2-NEXT:    notl %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    incb %cl
+; X86-NOBMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-NOBMI2-NEXT:    shrl %cl, %edx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    jne .LBB298_6
+; X86-NOBMI2-NEXT:  # %bb.5: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:  .LBB298_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl $1, %edx
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_xor_64_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB298_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB298_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB298_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    xorl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB298_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    notl %eax
+; X86-BMI2-NEXT:    notl %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    incb %cl
+; X86-BMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB298_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    shrxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:  .LBB298_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_xor_64_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB298_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    xorq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB298_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    incb %cl
+; X64-NOBMI2-NEXT:    movzbl %cl, %edx
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    btq %rdx, %rax
+; X64-NOBMI2-NEXT:    setae %cl
+; X64-NOBMI2-NEXT:    movq %rcx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_xor_64_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB298_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    xorq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB298_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    incb %sil
+; X64-BMI2-NEXT:    movzbl %sil, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    btq %rdx, %rax
+; X64-BMI2-NEXT:    setae %cl
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %0 = atomicrmw xor ptr %v, i64 %shl monotonic, align 8
+  %add = add i64 %c, 1
+  %1 = xor i64 %0, -1
+  %2 = lshr i64 %1, %add
+  %conv = and i64 %2, 1
+  ret i64 %conv
+}
+
+define i64 @atomic_shl1_small_mask_xor_64_gpr_valz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_small_mask_xor_64_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $31, %ecx
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    movl %ecx, %ebp
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB299_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB299_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    btl %ebp, %eax
+; X86-NOBMI2-NEXT:    setae %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_small_mask_xor_64_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    andl $31, %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %esi, %eax, %ebp
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB299_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB299_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    btl %esi, %eax
+; X86-BMI2-NEXT:    setae %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_small_mask_xor_64_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    andl $31, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB299_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    xorq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB299_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btl %ecx, %eax
+; X64-NOBMI2-NEXT:    setae %dl
+; X64-NOBMI2-NEXT:    movq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_small_mask_xor_64_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $31, %esi
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB299_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    xorq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB299_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    btl %esi, %eax
+; X64-BMI2-NEXT:    setae %cl
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 31
+  %shl = shl nuw nsw i64 1, %rem
+  %0 = atomicrmw xor ptr %v, i64 %shl monotonic, align 8
+  %1 = xor i64 %0, -1
+  %2 = lshr i64 %1, %rem
+  %conv = and i64 %2, 1
+  ret i64 %conv
+}
+
+define i64 @atomic_shl1_mask0_xor_64_gpr_valz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_xor_64_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB300_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB300_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB300_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    xorl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB300_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    notl %eax
+; X86-NOBMI2-NEXT:    notl %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-NOBMI2-NEXT:    shrl %cl, %edx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    jne .LBB300_6
+; X86-NOBMI2-NEXT:  # %bb.5: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:  .LBB300_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl $1, %edx
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_xor_64_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB300_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB300_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB300_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    xorl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB300_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    notl %eax
+; X86-BMI2-NEXT:    notl %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB300_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    shrxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:  .LBB300_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_xor_64_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB300_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    xorq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB300_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btq %rcx, %rax
+; X64-NOBMI2-NEXT:    setae %dl
+; X64-NOBMI2-NEXT:    movq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_xor_64_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB300_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    xorq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB300_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    btq %rsi, %rax
+; X64-BMI2-NEXT:    setae %cl
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 63
+  %shl = shl nuw i64 1, %rem
+  %0 = atomicrmw xor ptr %v, i64 %shl monotonic, align 8
+  %1 = xor i64 %0, -1
+  %2 = lshr i64 %1, %c
+  %conv = and i64 %2, 1
+  ret i64 %conv
+}
+
+define i64 @atomic_shl1_mask1_xor_64_gpr_valz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_xor_64_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB301_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB301_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB301_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    xorl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB301_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    notl %eax
+; X86-NOBMI2-NEXT:    notl %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-NOBMI2-NEXT:    shrl %cl, %edx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    jne .LBB301_6
+; X86-NOBMI2-NEXT:  # %bb.5: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:  .LBB301_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl $1, %edx
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_xor_64_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB301_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB301_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB301_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    xorl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB301_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    notl %eax
+; X86-BMI2-NEXT:    notl %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB301_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    shrxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:  .LBB301_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_xor_64_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB301_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    xorq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB301_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btq %rcx, %rax
+; X64-NOBMI2-NEXT:    setae %dl
+; X64-NOBMI2-NEXT:    movq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_xor_64_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB301_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    xorq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB301_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    btq %rsi, %rax
+; X64-BMI2-NEXT:    setae %cl
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %0 = atomicrmw xor ptr %v, i64 %shl monotonic, align 8
+  %rem = and i64 %c, 63
+  %1 = xor i64 %0, -1
+  %2 = lshr i64 %1, %rem
+  %conv = and i64 %2, 1
+  ret i64 %conv
+}
+
+define i64 @atomic_shl1_mask01_xor_64_gpr_valz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_xor_64_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    pushl %eax
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 24
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $63, %ecx
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    movl %ecx, (%esp) # 4-byte Spill
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB302_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB302_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB302_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    xorl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB302_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    notl %eax
+; X86-NOBMI2-NEXT:    notl %edx
+; X86-NOBMI2-NEXT:    movl (%esp), %ecx # 4-byte Reload
+; X86-NOBMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-NOBMI2-NEXT:    shrl %cl, %edx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    jne .LBB302_6
+; X86-NOBMI2-NEXT:  # %bb.5: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:  .LBB302_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl $1, %edx
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    addl $4, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_xor_64_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    pushl %eax
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 24
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    andl $63, %ecx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    movl %ecx, (%esp) # 4-byte Spill
+; X86-BMI2-NEXT:    je .LBB302_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB302_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB302_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    xorl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB302_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    notl %eax
+; X86-BMI2-NEXT:    notl %edx
+; X86-BMI2-NEXT:    movl (%esp), %ecx # 4-byte Reload
+; X86-BMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB302_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    shrxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:  .LBB302_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    addl $4, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_xor_64_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    andl $63, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB302_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    xorq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB302_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btq %rcx, %rax
+; X64-NOBMI2-NEXT:    setae %dl
+; X64-NOBMI2-NEXT:    movq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_xor_64_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $63, %esi
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB302_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    xorq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB302_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    btq %rsi, %rax
+; X64-BMI2-NEXT:    setae %cl
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 63
+  %shl = shl nuw i64 1, %rem
+  %0 = atomicrmw xor ptr %v, i64 %shl monotonic, align 8
+  %1 = xor i64 %0, -1
+  %2 = lshr i64 %1, %rem
+  %conv = and i64 %2, 1
+  ret i64 %conv
+}
+
+define i64 @atomic_blsi_xor_64_gpr_valz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_blsi_xor_64_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:    movl %eax, %ebp
+; X86-NOBMI2-NEXT:    negl %ebp
+; X86-NOBMI2-NEXT:    sbbl %ecx, %esi
+; X86-NOBMI2-NEXT:    andl %ecx, %esi
+; X86-NOBMI2-NEXT:    andl %eax, %ebp
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB303_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    xorl %esi, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB303_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %ebp, %eax
+; X86-NOBMI2-NEXT:    andl %esi, %edx
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    sete %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_blsi_xor_64_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    movl %eax, %ebp
+; X86-BMI2-NEXT:    negl %ebp
+; X86-BMI2-NEXT:    sbbl %ecx, %esi
+; X86-BMI2-NEXT:    andl %ecx, %esi
+; X86-BMI2-NEXT:    andl %eax, %ebp
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB303_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    xorl %esi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB303_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    andl %esi, %edx
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    sete %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_xor_64_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    blsiq %rsi, %rdx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB303_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rcx
+; X64-BMI2-NEXT:    xorq %rdx, %rcx
+; X64-BMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB303_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    testq %rdx, %rax
+; X64-BMI2-NEXT:    sete %cl
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %sub = sub i64 0, %c
+  %and = and i64 %sub, %c
+  %0 = atomicrmw xor ptr %v, i64 %and monotonic, align 8
+  %and3 = and i64 %0, %and
+  %tobool.not = icmp eq i64 %and3, 0
+  %conv = zext i1 %tobool.not to i64
+  ret i64 %conv
+}
+
+define i64 @atomic_shl1_xor_64_gpr_valnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_xor_64_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB304_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB304_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB304_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    xorl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB304_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-NOBMI2-NEXT:    shrl %cl, %edx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    jne .LBB304_6
+; X86-NOBMI2-NEXT:  # %bb.5: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:  .LBB304_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl $1, %edx
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_xor_64_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB304_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB304_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB304_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    xorl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB304_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB304_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    shrxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:  .LBB304_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_xor_64_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB304_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    xorq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB304_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btq %rcx, %rax
+; X64-NOBMI2-NEXT:    setb %dl
+; X64-NOBMI2-NEXT:    movq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_xor_64_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB304_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    xorq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB304_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrxq %rsi, %rax, %rax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %0 = atomicrmw xor ptr %v, i64 %shl monotonic, align 8
+  %1 = lshr i64 %0, %c
+  %conv = and i64 %1, 1
+  ret i64 %conv
+}
+
+define i64 @atomic_shl2_xor_64_gpr_valnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl2_xor_64_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl $2, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB305_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB305_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB305_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    xorl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB305_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edi, %eax
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    setne %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl2_xor_64_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl $2, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB305_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB305_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB305_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    xorl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB305_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    andl %edi, %edx
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    setne %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl2_xor_64_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl $2, %edx
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $rcx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB305_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rcx
+; X64-NOBMI2-NEXT:    xorq %rdx, %rcx
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB305_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    testq %rdx, %rax
+; X64-NOBMI2-NEXT:    setne %cl
+; X64-NOBMI2-NEXT:    movq %rcx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl2_xor_64_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $2, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rdx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB305_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rcx
+; X64-BMI2-NEXT:    xorq %rdx, %rcx
+; X64-BMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB305_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    testq %rdx, %rax
+; X64-BMI2-NEXT:    setne %cl
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl i64 2, %c
+  %0 = atomicrmw xor ptr %v, i64 %shl monotonic, align 8
+  %and = and i64 %0, %shl
+  %tobool = icmp ne i64 %and, 0
+  %conv = zext i1 %tobool to i64
+  ret i64 %conv
+}
+
+define i64 @atomic_shl1_neq_xor_64_gpr_valnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_xor_64_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB306_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB306_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB306_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    xorl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB306_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    incb %cl
+; X86-NOBMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-NOBMI2-NEXT:    shrl %cl, %edx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    jne .LBB306_6
+; X86-NOBMI2-NEXT:  # %bb.5: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:  .LBB306_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl $1, %edx
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_xor_64_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB306_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB306_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB306_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    xorl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB306_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    incb %cl
+; X86-BMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB306_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    shrxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:  .LBB306_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_xor_64_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB306_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    xorq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB306_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    incb %cl
+; X64-NOBMI2-NEXT:    movzbl %cl, %edx
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    btq %rdx, %rax
+; X64-NOBMI2-NEXT:    setb %cl
+; X64-NOBMI2-NEXT:    movq %rcx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_xor_64_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB306_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    xorq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB306_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    incb %sil
+; X64-BMI2-NEXT:    shrxq %rsi, %rax, %rax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %0 = atomicrmw xor ptr %v, i64 %shl monotonic, align 8
+  %add = add i64 %c, 1
+  %1 = lshr i64 %0, %add
+  %conv = and i64 %1, 1
+  ret i64 %conv
+}
+
+define i64 @atomic_shl1_small_mask_xor_64_gpr_valnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_small_mask_xor_64_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $31, %ecx
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    movl %ecx, %ebp
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB307_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB307_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    btl %ebp, %eax
+; X86-NOBMI2-NEXT:    setb %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_small_mask_xor_64_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    andl $31, %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %esi, %eax, %ebp
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB307_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB307_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    shrxl %esi, %eax, %eax
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_small_mask_xor_64_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    andl $31, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB307_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    xorq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB307_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btl %ecx, %eax
+; X64-NOBMI2-NEXT:    setb %dl
+; X64-NOBMI2-NEXT:    movq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_small_mask_xor_64_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $31, %esi
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB307_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    xorq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB307_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrxq %rsi, %rax, %rax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 31
+  %shl = shl nuw nsw i64 1, %rem
+  %0 = atomicrmw xor ptr %v, i64 %shl monotonic, align 8
+  %1 = lshr i64 %0, %rem
+  %conv = and i64 %1, 1
+  ret i64 %conv
+}
+
+define i64 @atomic_shl1_mask0_xor_64_gpr_valnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_xor_64_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB308_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB308_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB308_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    xorl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB308_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-NOBMI2-NEXT:    shrl %cl, %edx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    jne .LBB308_6
+; X86-NOBMI2-NEXT:  # %bb.5: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:  .LBB308_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl $1, %edx
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_xor_64_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB308_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB308_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB308_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    xorl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB308_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB308_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    shrxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:  .LBB308_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_xor_64_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB308_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    xorq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB308_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btq %rcx, %rax
+; X64-NOBMI2-NEXT:    setb %dl
+; X64-NOBMI2-NEXT:    movq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_xor_64_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB308_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    xorq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB308_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrxq %rsi, %rax, %rax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 63
+  %shl = shl nuw i64 1, %rem
+  %0 = atomicrmw xor ptr %v, i64 %shl monotonic, align 8
+  %1 = lshr i64 %0, %c
+  %conv = and i64 %1, 1
+  ret i64 %conv
+}
+
+define i64 @atomic_shl1_mask1_xor_64_gpr_valnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_xor_64_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB309_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB309_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB309_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    xorl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB309_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-NOBMI2-NEXT:    shrl %cl, %edx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    jne .LBB309_6
+; X86-NOBMI2-NEXT:  # %bb.5: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:  .LBB309_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl $1, %edx
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_xor_64_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB309_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB309_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB309_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    xorl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB309_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB309_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    shrxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:  .LBB309_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_xor_64_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB309_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    xorq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB309_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btq %rcx, %rax
+; X64-NOBMI2-NEXT:    setb %dl
+; X64-NOBMI2-NEXT:    movq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_xor_64_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB309_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    xorq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB309_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrxq %rsi, %rax, %rax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %0 = atomicrmw xor ptr %v, i64 %shl monotonic, align 8
+  %rem = and i64 %c, 63
+  %1 = lshr i64 %0, %rem
+  %conv = and i64 %1, 1
+  ret i64 %conv
+}
+
+define i64 @atomic_shl1_mask01_xor_64_gpr_valnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_xor_64_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    pushl %eax
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 24
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $63, %ecx
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    movl %ecx, (%esp) # 4-byte Spill
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB310_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB310_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB310_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    xorl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB310_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl (%esp), %ecx # 4-byte Reload
+; X86-NOBMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-NOBMI2-NEXT:    shrl %cl, %edx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    jne .LBB310_6
+; X86-NOBMI2-NEXT:  # %bb.5: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:  .LBB310_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl $1, %edx
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    addl $4, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_xor_64_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    pushl %eax
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 24
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    andl $63, %ecx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    movl %ecx, (%esp) # 4-byte Spill
+; X86-BMI2-NEXT:    je .LBB310_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB310_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB310_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    xorl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB310_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl (%esp), %ecx # 4-byte Reload
+; X86-BMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB310_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    shrxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:  .LBB310_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    addl $4, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_xor_64_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    andl $63, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB310_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    xorq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB310_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btq %rcx, %rax
+; X64-NOBMI2-NEXT:    setb %dl
+; X64-NOBMI2-NEXT:    movq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_xor_64_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $63, %esi
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB310_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    xorq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB310_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrxq %rsi, %rax, %rax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 63
+  %shl = shl nuw i64 1, %rem
+  %0 = atomicrmw xor ptr %v, i64 %shl monotonic, align 8
+  %1 = lshr i64 %0, %rem
+  %conv = and i64 %1, 1
+  ret i64 %conv
+}
+
+define i64 @atomic_blsi_xor_64_gpr_valnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_blsi_xor_64_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:    movl %eax, %ebp
+; X86-NOBMI2-NEXT:    negl %ebp
+; X86-NOBMI2-NEXT:    sbbl %ecx, %esi
+; X86-NOBMI2-NEXT:    andl %ecx, %esi
+; X86-NOBMI2-NEXT:    andl %eax, %ebp
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB311_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    xorl %esi, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB311_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %ebp, %eax
+; X86-NOBMI2-NEXT:    andl %esi, %edx
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    setne %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_blsi_xor_64_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    movl %eax, %ebp
+; X86-BMI2-NEXT:    negl %ebp
+; X86-BMI2-NEXT:    sbbl %ecx, %esi
+; X86-BMI2-NEXT:    andl %ecx, %esi
+; X86-BMI2-NEXT:    andl %eax, %ebp
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB311_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    xorl %esi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB311_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    andl %esi, %edx
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    setne %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_xor_64_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    blsiq %rsi, %rdx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB311_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rcx
+; X64-BMI2-NEXT:    xorq %rdx, %rcx
+; X64-BMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB311_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    testq %rdx, %rax
+; X64-BMI2-NEXT:    setne %cl
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %sub = sub i64 0, %c
+  %and = and i64 %sub, %c
+  %0 = atomicrmw xor ptr %v, i64 %and monotonic, align 8
+  %and3 = and i64 %0, %and
+  %tobool = icmp ne i64 %and3, 0
+  %conv = zext i1 %tobool to i64
+  ret i64 %conv
+}
+
+define i64 @atomic_shl1_xor_64_gpr_br(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_xor_64_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB312_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB312_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB312_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    xorl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB312_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edi, %eax
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    je .LBB312_5
+; X86-NOBMI2-NEXT:  # %bb.6: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-NOBMI2-NEXT:    jmp .LBB312_7
+; X86-NOBMI2-NEXT:  .LBB312_5:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB312_7: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_xor_64_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB312_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB312_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB312_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    xorl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB312_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    andl %edi, %edx
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    je .LBB312_5
+; X86-BMI2-NEXT:  # %bb.6: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-BMI2-NEXT:    jmp .LBB312_7
+; X86-BMI2-NEXT:  .LBB312_5:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB312_7: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_xor_64_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $63, %eax
+; X64-NOBMI2-NEXT:    lock btcq %rax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB312_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB312_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_xor_64_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $63, %eax
+; X64-BMI2-NEXT:    lock btcq %rax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB312_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB312_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %0 = atomicrmw xor ptr %v, i64 %shl monotonic, align 8
+  %and = and i64 %0, %shl
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl2_xor_64_gpr_br(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl2_xor_64_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $2, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB313_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB313_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB313_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    xorl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB313_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edi, %eax
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    je .LBB313_5
+; X86-NOBMI2-NEXT:  # %bb.6: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-NOBMI2-NEXT:    jmp .LBB313_7
+; X86-NOBMI2-NEXT:  .LBB313_5:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB313_7: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl2_xor_64_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $2, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB313_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB313_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB313_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    xorl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB313_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    andl %edi, %edx
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    je .LBB313_5
+; X86-BMI2-NEXT:  # %bb.6: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-BMI2-NEXT:    jmp .LBB313_7
+; X86-BMI2-NEXT:  .LBB313_5:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB313_7: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl2_xor_64_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl $2, %edx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB313_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    xorq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB313_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    testq %rdx, %rax
+; X64-NOBMI2-NEXT:    je .LBB313_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rcx,8), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB313_3:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl2_xor_64_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $2, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB313_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    xorq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB313_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    testq %rcx, %rax
+; X64-BMI2-NEXT:    je .LBB313_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB313_3:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl i64 2, %c
+  %0 = atomicrmw xor ptr %v, i64 %shl monotonic, align 8
+  %and = and i64 %0, %shl
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_neq_xor_64_gpr_br(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_xor_64_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %esi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB314_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %esi, %ebp
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:  .LBB314_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB314_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %esi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    xorl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB314_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    incb %cl
+; X86-NOBMI2-NEXT:    movl $1, %ebx
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %ebx, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %ebx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB314_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    movl %ebx, %ebp
+; X86-NOBMI2-NEXT:    xorl %ebx, %ebx
+; X86-NOBMI2-NEXT:  .LBB314_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    andl %ebx, %eax
+; X86-NOBMI2-NEXT:    orl %edx, %eax
+; X86-NOBMI2-NEXT:    je .LBB314_7
+; X86-NOBMI2-NEXT:  # %bb.8: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi,%ecx,8), %esi
+; X86-NOBMI2-NEXT:    jmp .LBB314_9
+; X86-NOBMI2-NEXT:  .LBB314_7:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB314_9: # %return
+; X86-NOBMI2-NEXT:    movl %esi, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_xor_64_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %esi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB314_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %esi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB314_2: # %entry
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB314_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    xorl %esi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB314_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    # kill: def $cl killed $cl killed $ecx def $ecx
+; X86-BMI2-NEXT:    incb %cl
+; X86-BMI2-NEXT:    movl $1, %ebp
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    xorl %ebx, %ebx
+; X86-BMI2-NEXT:    shldl %cl, %ebp, %ebx
+; X86-BMI2-NEXT:    shlxl %ecx, %ebp, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB314_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    movl %ebp, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB314_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebx, %edx
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    orl %edx, %eax
+; X86-BMI2-NEXT:    je .LBB314_7
+; X86-BMI2-NEXT:  # %bb.8: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%edi,%ecx,8), %esi
+; X86-BMI2-NEXT:    jmp .LBB314_9
+; X86-BMI2-NEXT:  .LBB314_7:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB314_9: # %return
+; X86-BMI2-NEXT:    movl %esi, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_xor_64_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB314_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    xorq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB314_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    leal 1(%rcx), %edx
+; X64-NOBMI2-NEXT:    movzbl %dl, %edx
+; X64-NOBMI2-NEXT:    btq %rdx, %rax
+; X64-NOBMI2-NEXT:    jae .LBB314_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rcx,8), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB314_3:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_xor_64_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB314_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    xorq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB314_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    leal 1(%rsi), %ecx
+; X64-BMI2-NEXT:    movzbl %cl, %ecx
+; X64-BMI2-NEXT:    btq %rcx, %rax
+; X64-BMI2-NEXT:    jae .LBB314_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB314_3:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %0 = atomicrmw xor ptr %v, i64 %shl monotonic, align 8
+  %add = add i64 %c, 1
+  %shl1 = shl nuw i64 1, %add
+  %and = and i64 %0, %shl1
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_small_mask_xor_64_gpr_br(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_small_mask_xor_64_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $31, %ecx
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    movl %ecx, %ebp
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB315_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB315_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    testl %edi, %eax
+; X86-NOBMI2-NEXT:    je .LBB315_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movl (%esi,%ebp,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi,%ebp,8), %edx
+; X86-NOBMI2-NEXT:    jmp .LBB315_5
+; X86-NOBMI2-NEXT:  .LBB315_3:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB315_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_small_mask_xor_64_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    andl $31, %edi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %edi, %eax, %ebp
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB315_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB315_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    testl %ebp, %eax
+; X86-BMI2-NEXT:    je .LBB315_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movl (%esi,%edi,8), %eax
+; X86-BMI2-NEXT:    movl 4(%esi,%edi,8), %edx
+; X86-BMI2-NEXT:    jmp .LBB315_5
+; X86-BMI2-NEXT:  .LBB315_3:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB315_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_small_mask_xor_64_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    andl $31, %esi
+; X64-NOBMI2-NEXT:    lock btcq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB315_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB315_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_small_mask_xor_64_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $31, %esi
+; X64-BMI2-NEXT:    lock btcq %rsi, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB315_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB315_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 31
+  %shl = shl nuw nsw i64 1, %rem
+  %0 = atomicrmw xor ptr %v, i64 %shl monotonic, align 8
+  %and = and i64 %0, %shl
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %rem
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_mask0_xor_64_gpr_br(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_xor_64_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %esi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB316_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %esi, %ebp
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:  .LBB316_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB316_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %esi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    xorl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB316_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl $1, %ebx
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    shldl %cl, %ebx, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %ebx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB316_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    movl %ebx, %ebp
+; X86-NOBMI2-NEXT:    xorl %ebx, %ebx
+; X86-NOBMI2-NEXT:  .LBB316_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    andl %ebx, %eax
+; X86-NOBMI2-NEXT:    orl %edx, %eax
+; X86-NOBMI2-NEXT:    je .LBB316_7
+; X86-NOBMI2-NEXT:  # %bb.8: # %if.then
+; X86-NOBMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi,%ecx,8), %esi
+; X86-NOBMI2-NEXT:    jmp .LBB316_9
+; X86-NOBMI2-NEXT:  .LBB316_7:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB316_9: # %return
+; X86-NOBMI2-NEXT:    movl %esi, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_xor_64_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %esi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB316_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %esi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB316_2: # %entry
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB316_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    xorl %esi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB316_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl $1, %ebp
+; X86-BMI2-NEXT:    xorl %ebx, %ebx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    shldl %cl, %ebp, %ebx
+; X86-BMI2-NEXT:    shlxl %ecx, %ebp, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB316_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    movl %ebp, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB316_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebx, %edx
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    orl %edx, %eax
+; X86-BMI2-NEXT:    je .LBB316_7
+; X86-BMI2-NEXT:  # %bb.8: # %if.then
+; X86-BMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%edi,%ecx,8), %edx
+; X86-BMI2-NEXT:    jmp .LBB316_9
+; X86-BMI2-NEXT:  .LBB316_7:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:  .LBB316_9: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_xor_64_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $63, %eax
+; X64-NOBMI2-NEXT:    lock btcq %rax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB316_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB316_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_xor_64_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $63, %eax
+; X64-BMI2-NEXT:    lock btcq %rax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB316_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB316_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 63
+  %shl = shl nuw i64 1, %rem
+  %0 = atomicrmw xor ptr %v, i64 %shl monotonic, align 8
+  %shl1 = shl nuw i64 1, %c
+  %and = and i64 %0, %shl1
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_mask1_xor_64_gpr_br(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_xor_64_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %esi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB317_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %esi, %ebp
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:  .LBB317_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB317_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %esi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    xorl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB317_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl $1, %ebx
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    shldl %cl, %ebx, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %ebx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB317_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    movl %ebx, %ebp
+; X86-NOBMI2-NEXT:    xorl %ebx, %ebx
+; X86-NOBMI2-NEXT:  .LBB317_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    andl %ebx, %eax
+; X86-NOBMI2-NEXT:    orl %edx, %eax
+; X86-NOBMI2-NEXT:    je .LBB317_7
+; X86-NOBMI2-NEXT:  # %bb.8: # %if.then
+; X86-NOBMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi,%ecx,8), %esi
+; X86-NOBMI2-NEXT:    jmp .LBB317_9
+; X86-NOBMI2-NEXT:  .LBB317_7:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB317_9: # %return
+; X86-NOBMI2-NEXT:    movl %esi, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_xor_64_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %esi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB317_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %esi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB317_2: # %entry
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB317_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    xorl %esi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB317_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl $1, %ebp
+; X86-BMI2-NEXT:    xorl %ebx, %ebx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    shldl %cl, %ebp, %ebx
+; X86-BMI2-NEXT:    shlxl %ecx, %ebp, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB317_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    movl %ebp, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB317_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebx, %edx
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    orl %edx, %eax
+; X86-BMI2-NEXT:    je .LBB317_7
+; X86-BMI2-NEXT:  # %bb.8: # %if.then
+; X86-BMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%edi,%ecx,8), %edx
+; X86-BMI2-NEXT:    jmp .LBB317_9
+; X86-BMI2-NEXT:  .LBB317_7:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:  .LBB317_9: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_xor_64_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $63, %eax
+; X64-NOBMI2-NEXT:    lock btcq %rax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB317_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB317_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_xor_64_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $63, %eax
+; X64-BMI2-NEXT:    lock btcq %rax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB317_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB317_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %0 = atomicrmw xor ptr %v, i64 %shl monotonic, align 8
+  %rem = and i64 %c, 63
+  %shl1 = shl nuw i64 1, %rem
+  %and = and i64 %0, %shl1
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_mask01_xor_64_gpr_br(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_xor_64_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB318_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB318_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB318_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    xorl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB318_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edi, %eax
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    je .LBB318_5
+; X86-NOBMI2-NEXT:  # %bb.6: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-NOBMI2-NEXT:    jmp .LBB318_7
+; X86-NOBMI2-NEXT:  .LBB318_5:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB318_7: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_xor_64_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB318_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB318_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB318_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    xorl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB318_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    andl %edi, %edx
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    je .LBB318_5
+; X86-BMI2-NEXT:  # %bb.6: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-BMI2-NEXT:    jmp .LBB318_7
+; X86-BMI2-NEXT:  .LBB318_5:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB318_7: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_xor_64_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $63, %eax
+; X64-NOBMI2-NEXT:    lock btcq %rax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB318_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB318_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_xor_64_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $63, %eax
+; X64-BMI2-NEXT:    lock btcq %rax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB318_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB318_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 63
+  %shl = shl nuw i64 1, %rem
+  %0 = atomicrmw xor ptr %v, i64 %shl monotonic, align 8
+  %and = and i64 %0, %shl
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_blsi_xor_64_gpr_br(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_blsi_xor_64_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    movl %ecx, %esi
+; X86-NOBMI2-NEXT:    negl %esi
+; X86-NOBMI2-NEXT:    sbbl %eax, %ebp
+; X86-NOBMI2-NEXT:    andl %eax, %ebp
+; X86-NOBMI2-NEXT:    andl %ecx, %esi
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB319_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %esi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    xorl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB319_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %esi, %eax
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    je .LBB319_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi,%ecx,8), %edx
+; X86-NOBMI2-NEXT:    jmp .LBB319_5
+; X86-NOBMI2-NEXT:  .LBB319_3:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB319_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_blsi_xor_64_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:    movl %ecx, %esi
+; X86-BMI2-NEXT:    negl %esi
+; X86-BMI2-NEXT:    sbbl %eax, %ebp
+; X86-BMI2-NEXT:    andl %eax, %ebp
+; X86-BMI2-NEXT:    andl %ecx, %esi
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB319_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %esi, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    xorl %ebp, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB319_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %esi, %eax
+; X86-BMI2-NEXT:    andl %ebp, %edx
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    je .LBB319_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%edi,%ecx,8), %edx
+; X86-BMI2-NEXT:    jmp .LBB319_5
+; X86-BMI2-NEXT:  .LBB319_3:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB319_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_xor_64_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    blsiq %rsi, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB319_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    xorq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB319_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    testq %rcx, %rax
+; X64-BMI2-NEXT:    je .LBB319_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB319_3:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %sub = sub i64 0, %c
+  %and = and i64 %sub, %c
+  %0 = atomicrmw xor ptr %v, i64 %and monotonic, align 8
+  %and3 = and i64 %0, %and
+  %tobool.not = icmp eq i64 %and3, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_xor_64_gpr_brz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_xor_64_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB320_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB320_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB320_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    xorl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB320_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edi, %eax
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    je .LBB320_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jmp .LBB320_7
+; X86-NOBMI2-NEXT:  .LBB320_6: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-NOBMI2-NEXT:  .LBB320_7: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_xor_64_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB320_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB320_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB320_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    xorl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB320_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    andl %edi, %edx
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    je .LBB320_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jmp .LBB320_7
+; X86-BMI2-NEXT:  .LBB320_6: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-BMI2-NEXT:  .LBB320_7: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_xor_64_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $63, %eax
+; X64-NOBMI2-NEXT:    lock btcq %rax, (%rdi)
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    jae .LBB320_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB320_1: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_xor_64_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $63, %eax
+; X64-BMI2-NEXT:    lock btcq %rax, (%rdi)
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    jae .LBB320_1
+; X64-BMI2-NEXT:  # %bb.2: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB320_1: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %0 = atomicrmw xor ptr %v, i64 %shl monotonic, align 8
+  %and = and i64 %0, %shl
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl2_xor_64_gpr_brz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl2_xor_64_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $2, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB321_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB321_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB321_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    xorl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB321_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edi, %eax
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    je .LBB321_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jmp .LBB321_7
+; X86-NOBMI2-NEXT:  .LBB321_6: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-NOBMI2-NEXT:  .LBB321_7: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl2_xor_64_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $2, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB321_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB321_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB321_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    xorl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB321_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    andl %edi, %edx
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    je .LBB321_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jmp .LBB321_7
+; X86-BMI2-NEXT:  .LBB321_6: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-BMI2-NEXT:  .LBB321_7: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl2_xor_64_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl $2, %esi
+; X64-NOBMI2-NEXT:    shlq %cl, %rsi
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB321_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rdx
+; X64-NOBMI2-NEXT:    xorq %rsi, %rdx
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB321_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movl $123, %edx
+; X64-NOBMI2-NEXT:    testq %rsi, %rax
+; X64-NOBMI2-NEXT:    je .LBB321_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %return
+; X64-NOBMI2-NEXT:    movq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB321_3: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rcx,8), %rdx
+; X64-NOBMI2-NEXT:    movq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl2_xor_64_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $2, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rdx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB321_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rcx
+; X64-BMI2-NEXT:    xorq %rdx, %rcx
+; X64-BMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB321_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movl $123, %ecx
+; X64-BMI2-NEXT:    testq %rdx, %rax
+; X64-BMI2-NEXT:    je .LBB321_3
+; X64-BMI2-NEXT:  # %bb.4: # %return
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB321_3: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rcx
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl i64 2, %c
+  %0 = atomicrmw xor ptr %v, i64 %shl monotonic, align 8
+  %and = and i64 %0, %shl
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_neq_xor_64_gpr_brz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_xor_64_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %esi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB322_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %esi, %ebp
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:  .LBB322_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB322_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %esi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    xorl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB322_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    incb %cl
+; X86-NOBMI2-NEXT:    movl $1, %ebx
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %ebx, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %ebx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB322_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    movl %ebx, %ebp
+; X86-NOBMI2-NEXT:    xorl %ebx, %ebx
+; X86-NOBMI2-NEXT:  .LBB322_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    andl %ebx, %eax
+; X86-NOBMI2-NEXT:    movl $123, %ecx
+; X86-NOBMI2-NEXT:    orl %edx, %eax
+; X86-NOBMI2-NEXT:    jne .LBB322_8
+; X86-NOBMI2-NEXT:  # %bb.7: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl (%edi,%eax,8), %ecx
+; X86-NOBMI2-NEXT:    movl 4(%edi,%eax,8), %esi
+; X86-NOBMI2-NEXT:  .LBB322_8: # %return
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    movl %esi, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_xor_64_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %esi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB322_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %esi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB322_2: # %entry
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB322_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    xorl %esi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB322_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    # kill: def $cl killed $cl killed $ecx def $ecx
+; X86-BMI2-NEXT:    incb %cl
+; X86-BMI2-NEXT:    movl $1, %ebp
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    xorl %ebx, %ebx
+; X86-BMI2-NEXT:    shldl %cl, %ebp, %ebx
+; X86-BMI2-NEXT:    shlxl %ecx, %ebp, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB322_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    movl %ebp, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB322_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebx, %edx
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    movl $123, %ecx
+; X86-BMI2-NEXT:    orl %edx, %eax
+; X86-BMI2-NEXT:    jne .LBB322_8
+; X86-BMI2-NEXT:  # %bb.7: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl (%edi,%eax,8), %ecx
+; X86-BMI2-NEXT:    movl 4(%edi,%eax,8), %esi
+; X86-BMI2-NEXT:  .LBB322_8: # %return
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    movl %esi, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_xor_64_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB322_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    xorq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB322_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    leal 1(%rcx), %edx
+; X64-NOBMI2-NEXT:    movzbl %dl, %esi
+; X64-NOBMI2-NEXT:    movl $123, %edx
+; X64-NOBMI2-NEXT:    btq %rsi, %rax
+; X64-NOBMI2-NEXT:    jae .LBB322_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %return
+; X64-NOBMI2-NEXT:    movq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB322_3: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rcx,8), %rdx
+; X64-NOBMI2-NEXT:    movq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_xor_64_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB322_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    xorq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB322_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    leal 1(%rsi), %ecx
+; X64-BMI2-NEXT:    movzbl %cl, %edx
+; X64-BMI2-NEXT:    movl $123, %ecx
+; X64-BMI2-NEXT:    btq %rdx, %rax
+; X64-BMI2-NEXT:    jae .LBB322_3
+; X64-BMI2-NEXT:  # %bb.4: # %return
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB322_3: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rcx
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %0 = atomicrmw xor ptr %v, i64 %shl monotonic, align 8
+  %add = add i64 %c, 1
+  %shl1 = shl nuw i64 1, %add
+  %and = and i64 %0, %shl1
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_small_mask_xor_64_gpr_brz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_small_mask_xor_64_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $31, %ecx
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    movl %ecx, %ebp
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB323_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB323_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    testl %edi, %eax
+; X86-NOBMI2-NEXT:    je .LBB323_4
+; X86-NOBMI2-NEXT:  # %bb.3:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jmp .LBB323_5
+; X86-NOBMI2-NEXT:  .LBB323_4: # %if.then
+; X86-NOBMI2-NEXT:    movl (%esi,%ebp,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi,%ebp,8), %edx
+; X86-NOBMI2-NEXT:  .LBB323_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_small_mask_xor_64_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    andl $31, %edi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %edi, %eax, %ebp
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB323_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB323_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    testl %ebp, %eax
+; X86-BMI2-NEXT:    je .LBB323_4
+; X86-BMI2-NEXT:  # %bb.3:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jmp .LBB323_5
+; X86-BMI2-NEXT:  .LBB323_4: # %if.then
+; X86-BMI2-NEXT:    movl (%esi,%edi,8), %eax
+; X86-BMI2-NEXT:    movl 4(%esi,%edi,8), %edx
+; X86-BMI2-NEXT:  .LBB323_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_small_mask_xor_64_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    andl $31, %esi
+; X64-NOBMI2-NEXT:    lock btcq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    jae .LBB323_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB323_1: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_small_mask_xor_64_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $31, %esi
+; X64-BMI2-NEXT:    lock btcq %rsi, (%rdi)
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    jae .LBB323_1
+; X64-BMI2-NEXT:  # %bb.2: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB323_1: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 31
+  %shl = shl nuw nsw i64 1, %rem
+  %0 = atomicrmw xor ptr %v, i64 %shl monotonic, align 8
+  %and = and i64 %0, %shl
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %rem
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_mask0_xor_64_gpr_brz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_xor_64_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %esi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB324_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %esi, %ebp
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:  .LBB324_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB324_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %esi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    xorl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB324_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl $1, %ebx
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    shldl %cl, %ebx, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %ebx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB324_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    movl %ebx, %ebp
+; X86-NOBMI2-NEXT:    xorl %ebx, %ebx
+; X86-NOBMI2-NEXT:  .LBB324_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    andl %ebx, %eax
+; X86-NOBMI2-NEXT:    movl $123, %ecx
+; X86-NOBMI2-NEXT:    orl %edx, %eax
+; X86-NOBMI2-NEXT:    jne .LBB324_8
+; X86-NOBMI2-NEXT:  # %bb.7: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl (%edi,%eax,8), %ecx
+; X86-NOBMI2-NEXT:    movl 4(%edi,%eax,8), %esi
+; X86-NOBMI2-NEXT:  .LBB324_8: # %return
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    movl %esi, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_xor_64_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %esi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB324_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %esi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB324_2: # %entry
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB324_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    xorl %esi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB324_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl $1, %ebp
+; X86-BMI2-NEXT:    xorl %ebx, %ebx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    shldl %cl, %ebp, %ebx
+; X86-BMI2-NEXT:    shlxl %ecx, %ebp, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB324_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    movl %ebp, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB324_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    andl %ebx, %edx
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    movl $123, %ecx
+; X86-BMI2-NEXT:    orl %edx, %eax
+; X86-BMI2-NEXT:    jne .LBB324_8
+; X86-BMI2-NEXT:  # %bb.7: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl (%edi,%eax,8), %ecx
+; X86-BMI2-NEXT:    movl 4(%edi,%eax,8), %esi
+; X86-BMI2-NEXT:  .LBB324_8: # %return
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    movl %esi, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_xor_64_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $63, %eax
+; X64-NOBMI2-NEXT:    lock btcq %rax, (%rdi)
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    jae .LBB324_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB324_1: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_xor_64_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $63, %eax
+; X64-BMI2-NEXT:    lock btcq %rax, (%rdi)
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    jae .LBB324_1
+; X64-BMI2-NEXT:  # %bb.2: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB324_1: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 63
+  %shl = shl nuw i64 1, %rem
+  %0 = atomicrmw xor ptr %v, i64 %shl monotonic, align 8
+  %shl1 = shl nuw i64 1, %c
+  %and = and i64 %0, %shl1
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_mask1_xor_64_gpr_brz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_xor_64_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %esi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB325_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %esi, %ebp
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:  .LBB325_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB325_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %esi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    xorl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB325_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl $1, %ebx
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    shldl %cl, %ebx, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %ebx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB325_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    movl %ebx, %ebp
+; X86-NOBMI2-NEXT:    xorl %ebx, %ebx
+; X86-NOBMI2-NEXT:  .LBB325_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    andl %ebx, %eax
+; X86-NOBMI2-NEXT:    movl $123, %ecx
+; X86-NOBMI2-NEXT:    orl %edx, %eax
+; X86-NOBMI2-NEXT:    jne .LBB325_8
+; X86-NOBMI2-NEXT:  # %bb.7: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl (%edi,%eax,8), %ecx
+; X86-NOBMI2-NEXT:    movl 4(%edi,%eax,8), %esi
+; X86-NOBMI2-NEXT:  .LBB325_8: # %return
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    movl %esi, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_xor_64_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %esi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB325_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %esi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB325_2: # %entry
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB325_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    xorl %esi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB325_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl $1, %ebp
+; X86-BMI2-NEXT:    xorl %ebx, %ebx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    shldl %cl, %ebp, %ebx
+; X86-BMI2-NEXT:    shlxl %ecx, %ebp, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB325_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    movl %ebp, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB325_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    andl %ebx, %edx
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    movl $123, %ecx
+; X86-BMI2-NEXT:    orl %edx, %eax
+; X86-BMI2-NEXT:    jne .LBB325_8
+; X86-BMI2-NEXT:  # %bb.7: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl (%edi,%eax,8), %ecx
+; X86-BMI2-NEXT:    movl 4(%edi,%eax,8), %esi
+; X86-BMI2-NEXT:  .LBB325_8: # %return
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    movl %esi, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_xor_64_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $63, %eax
+; X64-NOBMI2-NEXT:    lock btcq %rax, (%rdi)
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    jae .LBB325_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB325_1: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_xor_64_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $63, %eax
+; X64-BMI2-NEXT:    lock btcq %rax, (%rdi)
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    jae .LBB325_1
+; X64-BMI2-NEXT:  # %bb.2: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB325_1: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %0 = atomicrmw xor ptr %v, i64 %shl monotonic, align 8
+  %rem = and i64 %c, 63
+  %shl1 = shl nuw i64 1, %rem
+  %and = and i64 %0, %shl1
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_mask01_xor_64_gpr_brz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_xor_64_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB326_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB326_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB326_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    xorl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB326_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edi, %eax
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    je .LBB326_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jmp .LBB326_7
+; X86-NOBMI2-NEXT:  .LBB326_6: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-NOBMI2-NEXT:  .LBB326_7: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_xor_64_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB326_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB326_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB326_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    xorl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB326_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    andl %edi, %edx
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    je .LBB326_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jmp .LBB326_7
+; X86-BMI2-NEXT:  .LBB326_6: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-BMI2-NEXT:  .LBB326_7: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_xor_64_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $63, %eax
+; X64-NOBMI2-NEXT:    lock btcq %rax, (%rdi)
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    jae .LBB326_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB326_1: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_xor_64_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $63, %eax
+; X64-BMI2-NEXT:    lock btcq %rax, (%rdi)
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    jae .LBB326_1
+; X64-BMI2-NEXT:  # %bb.2: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB326_1: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 63
+  %shl = shl nuw i64 1, %rem
+  %0 = atomicrmw xor ptr %v, i64 %shl monotonic, align 8
+  %and = and i64 %0, %shl
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_blsi_xor_64_gpr_brz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_blsi_xor_64_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    movl %ecx, %esi
+; X86-NOBMI2-NEXT:    negl %esi
+; X86-NOBMI2-NEXT:    sbbl %eax, %ebp
+; X86-NOBMI2-NEXT:    andl %eax, %ebp
+; X86-NOBMI2-NEXT:    andl %ecx, %esi
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB327_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %esi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    xorl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB327_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %esi, %eax
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    je .LBB327_4
+; X86-NOBMI2-NEXT:  # %bb.3:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jmp .LBB327_5
+; X86-NOBMI2-NEXT:  .LBB327_4: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi,%ecx,8), %edx
+; X86-NOBMI2-NEXT:  .LBB327_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_blsi_xor_64_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:    movl %ecx, %esi
+; X86-BMI2-NEXT:    negl %esi
+; X86-BMI2-NEXT:    sbbl %eax, %ebp
+; X86-BMI2-NEXT:    andl %eax, %ebp
+; X86-BMI2-NEXT:    andl %ecx, %esi
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB327_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %esi, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    xorl %ebp, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB327_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %esi, %eax
+; X86-BMI2-NEXT:    andl %ebp, %edx
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    je .LBB327_4
+; X86-BMI2-NEXT:  # %bb.3:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jmp .LBB327_5
+; X86-BMI2-NEXT:  .LBB327_4: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%edi,%ecx,8), %edx
+; X86-BMI2-NEXT:  .LBB327_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_xor_64_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    blsiq %rsi, %rdx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB327_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rcx
+; X64-BMI2-NEXT:    xorq %rdx, %rcx
+; X64-BMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB327_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movl $123, %ecx
+; X64-BMI2-NEXT:    testq %rdx, %rax
+; X64-BMI2-NEXT:    je .LBB327_3
+; X64-BMI2-NEXT:  # %bb.4: # %return
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB327_3: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rcx
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %sub = sub i64 0, %c
+  %and = and i64 %sub, %c
+  %0 = atomicrmw xor ptr %v, i64 %and monotonic, align 8
+  %and3 = and i64 %0, %and
+  %tobool.not = icmp eq i64 %and3, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_xor_64_gpr_brnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_xor_64_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB328_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB328_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB328_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    xorl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB328_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edi, %eax
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    je .LBB328_5
+; X86-NOBMI2-NEXT:  # %bb.6: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-NOBMI2-NEXT:    jmp .LBB328_7
+; X86-NOBMI2-NEXT:  .LBB328_5:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB328_7: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_xor_64_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB328_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB328_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB328_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    xorl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB328_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    andl %edi, %edx
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    je .LBB328_5
+; X86-BMI2-NEXT:  # %bb.6: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-BMI2-NEXT:    jmp .LBB328_7
+; X86-BMI2-NEXT:  .LBB328_5:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB328_7: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_xor_64_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $63, %eax
+; X64-NOBMI2-NEXT:    lock btcq %rax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB328_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB328_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_xor_64_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $63, %eax
+; X64-BMI2-NEXT:    lock btcq %rax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB328_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB328_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %0 = atomicrmw xor ptr %v, i64 %shl monotonic, align 8
+  %and = and i64 %0, %shl
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl2_xor_64_gpr_brnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl2_xor_64_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $2, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB329_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB329_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB329_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    xorl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB329_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edi, %eax
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    je .LBB329_5
+; X86-NOBMI2-NEXT:  # %bb.6: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-NOBMI2-NEXT:    jmp .LBB329_7
+; X86-NOBMI2-NEXT:  .LBB329_5:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB329_7: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl2_xor_64_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $2, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB329_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB329_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB329_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    xorl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB329_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    andl %edi, %edx
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    je .LBB329_5
+; X86-BMI2-NEXT:  # %bb.6: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-BMI2-NEXT:    jmp .LBB329_7
+; X86-BMI2-NEXT:  .LBB329_5:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB329_7: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl2_xor_64_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl $2, %edx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB329_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    xorq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB329_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    testq %rdx, %rax
+; X64-NOBMI2-NEXT:    je .LBB329_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rcx,8), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB329_3:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl2_xor_64_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $2, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB329_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    xorq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB329_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    testq %rcx, %rax
+; X64-BMI2-NEXT:    je .LBB329_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB329_3:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl i64 2, %c
+  %0 = atomicrmw xor ptr %v, i64 %shl monotonic, align 8
+  %and = and i64 %0, %shl
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_neq_xor_64_gpr_brnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_xor_64_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %esi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB330_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %esi, %ebp
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:  .LBB330_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB330_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %esi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    xorl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB330_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    incb %cl
+; X86-NOBMI2-NEXT:    movl $1, %ebx
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %ebx, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %ebx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB330_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    movl %ebx, %ebp
+; X86-NOBMI2-NEXT:    xorl %ebx, %ebx
+; X86-NOBMI2-NEXT:  .LBB330_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    andl %ebx, %eax
+; X86-NOBMI2-NEXT:    orl %edx, %eax
+; X86-NOBMI2-NEXT:    je .LBB330_7
+; X86-NOBMI2-NEXT:  # %bb.8: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi,%ecx,8), %esi
+; X86-NOBMI2-NEXT:    jmp .LBB330_9
+; X86-NOBMI2-NEXT:  .LBB330_7:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB330_9: # %return
+; X86-NOBMI2-NEXT:    movl %esi, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_xor_64_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %esi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB330_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %esi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB330_2: # %entry
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB330_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    xorl %esi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB330_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    # kill: def $cl killed $cl killed $ecx def $ecx
+; X86-BMI2-NEXT:    incb %cl
+; X86-BMI2-NEXT:    movl $1, %ebp
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    xorl %ebx, %ebx
+; X86-BMI2-NEXT:    shldl %cl, %ebp, %ebx
+; X86-BMI2-NEXT:    shlxl %ecx, %ebp, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB330_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    movl %ebp, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB330_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebx, %edx
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    orl %edx, %eax
+; X86-BMI2-NEXT:    je .LBB330_7
+; X86-BMI2-NEXT:  # %bb.8: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%edi,%ecx,8), %esi
+; X86-BMI2-NEXT:    jmp .LBB330_9
+; X86-BMI2-NEXT:  .LBB330_7:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB330_9: # %return
+; X86-BMI2-NEXT:    movl %esi, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_xor_64_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB330_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    xorq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB330_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    leal 1(%rcx), %edx
+; X64-NOBMI2-NEXT:    movzbl %dl, %edx
+; X64-NOBMI2-NEXT:    btq %rdx, %rax
+; X64-NOBMI2-NEXT:    jae .LBB330_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rcx,8), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB330_3:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_xor_64_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB330_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    xorq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB330_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    leal 1(%rsi), %ecx
+; X64-BMI2-NEXT:    movzbl %cl, %ecx
+; X64-BMI2-NEXT:    btq %rcx, %rax
+; X64-BMI2-NEXT:    jae .LBB330_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB330_3:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %0 = atomicrmw xor ptr %v, i64 %shl monotonic, align 8
+  %add = add i64 %c, 1
+  %shl1 = shl nuw i64 1, %add
+  %and = and i64 %0, %shl1
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_small_mask_xor_64_gpr_brnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_small_mask_xor_64_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $31, %ecx
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    movl %ecx, %ebp
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB331_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB331_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    testl %edi, %eax
+; X86-NOBMI2-NEXT:    je .LBB331_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movl (%esi,%ebp,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi,%ebp,8), %edx
+; X86-NOBMI2-NEXT:    jmp .LBB331_5
+; X86-NOBMI2-NEXT:  .LBB331_3:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB331_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_small_mask_xor_64_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    andl $31, %edi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %edi, %eax, %ebp
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB331_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB331_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    testl %ebp, %eax
+; X86-BMI2-NEXT:    je .LBB331_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movl (%esi,%edi,8), %eax
+; X86-BMI2-NEXT:    movl 4(%esi,%edi,8), %edx
+; X86-BMI2-NEXT:    jmp .LBB331_5
+; X86-BMI2-NEXT:  .LBB331_3:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB331_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_small_mask_xor_64_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    andl $31, %esi
+; X64-NOBMI2-NEXT:    lock btcq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB331_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB331_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_small_mask_xor_64_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $31, %esi
+; X64-BMI2-NEXT:    lock btcq %rsi, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB331_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB331_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 31
+  %shl = shl nuw nsw i64 1, %rem
+  %0 = atomicrmw xor ptr %v, i64 %shl monotonic, align 8
+  %and = and i64 %0, %shl
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %rem
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_mask0_xor_64_gpr_brnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_xor_64_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %esi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB332_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %esi, %ebp
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:  .LBB332_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB332_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %esi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    xorl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB332_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl $1, %ebx
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    shldl %cl, %ebx, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %ebx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB332_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    movl %ebx, %ebp
+; X86-NOBMI2-NEXT:    xorl %ebx, %ebx
+; X86-NOBMI2-NEXT:  .LBB332_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    andl %ebx, %eax
+; X86-NOBMI2-NEXT:    orl %edx, %eax
+; X86-NOBMI2-NEXT:    je .LBB332_7
+; X86-NOBMI2-NEXT:  # %bb.8: # %if.then
+; X86-NOBMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi,%ecx,8), %esi
+; X86-NOBMI2-NEXT:    jmp .LBB332_9
+; X86-NOBMI2-NEXT:  .LBB332_7:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB332_9: # %return
+; X86-NOBMI2-NEXT:    movl %esi, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_xor_64_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %esi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB332_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %esi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB332_2: # %entry
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB332_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    xorl %esi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB332_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl $1, %ebp
+; X86-BMI2-NEXT:    xorl %ebx, %ebx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    shldl %cl, %ebp, %ebx
+; X86-BMI2-NEXT:    shlxl %ecx, %ebp, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB332_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    movl %ebp, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB332_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebx, %edx
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    orl %edx, %eax
+; X86-BMI2-NEXT:    je .LBB332_7
+; X86-BMI2-NEXT:  # %bb.8: # %if.then
+; X86-BMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%edi,%ecx,8), %edx
+; X86-BMI2-NEXT:    jmp .LBB332_9
+; X86-BMI2-NEXT:  .LBB332_7:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:  .LBB332_9: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_xor_64_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $63, %eax
+; X64-NOBMI2-NEXT:    lock btcq %rax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB332_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB332_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_xor_64_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $63, %eax
+; X64-BMI2-NEXT:    lock btcq %rax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB332_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB332_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 63
+  %shl = shl nuw i64 1, %rem
+  %0 = atomicrmw xor ptr %v, i64 %shl monotonic, align 8
+  %shl1 = shl nuw i64 1, %c
+  %and = and i64 %0, %shl1
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_mask1_xor_64_gpr_brnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_xor_64_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %esi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB333_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %esi, %ebp
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:  .LBB333_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB333_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %esi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    xorl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB333_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl $1, %ebx
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    shldl %cl, %ebx, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %ebx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB333_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    movl %ebx, %ebp
+; X86-NOBMI2-NEXT:    xorl %ebx, %ebx
+; X86-NOBMI2-NEXT:  .LBB333_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    andl %ebx, %eax
+; X86-NOBMI2-NEXT:    orl %edx, %eax
+; X86-NOBMI2-NEXT:    je .LBB333_7
+; X86-NOBMI2-NEXT:  # %bb.8: # %if.then
+; X86-NOBMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi,%ecx,8), %esi
+; X86-NOBMI2-NEXT:    jmp .LBB333_9
+; X86-NOBMI2-NEXT:  .LBB333_7:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB333_9: # %return
+; X86-NOBMI2-NEXT:    movl %esi, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_xor_64_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %esi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB333_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %esi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB333_2: # %entry
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB333_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    xorl %esi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB333_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl $1, %ebp
+; X86-BMI2-NEXT:    xorl %ebx, %ebx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    shldl %cl, %ebp, %ebx
+; X86-BMI2-NEXT:    shlxl %ecx, %ebp, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB333_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    movl %ebp, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB333_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebx, %edx
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    orl %edx, %eax
+; X86-BMI2-NEXT:    je .LBB333_7
+; X86-BMI2-NEXT:  # %bb.8: # %if.then
+; X86-BMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%edi,%ecx,8), %edx
+; X86-BMI2-NEXT:    jmp .LBB333_9
+; X86-BMI2-NEXT:  .LBB333_7:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:  .LBB333_9: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_xor_64_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $63, %eax
+; X64-NOBMI2-NEXT:    lock btcq %rax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB333_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB333_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_xor_64_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $63, %eax
+; X64-BMI2-NEXT:    lock btcq %rax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB333_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB333_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %0 = atomicrmw xor ptr %v, i64 %shl monotonic, align 8
+  %rem = and i64 %c, 63
+  %shl1 = shl nuw i64 1, %rem
+  %and = and i64 %0, %shl1
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_mask01_xor_64_gpr_brnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_xor_64_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB334_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB334_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB334_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    xorl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB334_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edi, %eax
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    je .LBB334_5
+; X86-NOBMI2-NEXT:  # %bb.6: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-NOBMI2-NEXT:    jmp .LBB334_7
+; X86-NOBMI2-NEXT:  .LBB334_5:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB334_7: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_xor_64_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB334_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB334_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB334_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    xorl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB334_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    andl %edi, %edx
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    je .LBB334_5
+; X86-BMI2-NEXT:  # %bb.6: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-BMI2-NEXT:    jmp .LBB334_7
+; X86-BMI2-NEXT:  .LBB334_5:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB334_7: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_xor_64_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $63, %eax
+; X64-NOBMI2-NEXT:    lock btcq %rax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB334_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB334_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_xor_64_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $63, %eax
+; X64-BMI2-NEXT:    lock btcq %rax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB334_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB334_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 63
+  %shl = shl nuw i64 1, %rem
+  %0 = atomicrmw xor ptr %v, i64 %shl monotonic, align 8
+  %and = and i64 %0, %shl
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_blsi_xor_64_gpr_brnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_blsi_xor_64_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    movl %ecx, %esi
+; X86-NOBMI2-NEXT:    negl %esi
+; X86-NOBMI2-NEXT:    sbbl %eax, %ebp
+; X86-NOBMI2-NEXT:    andl %eax, %ebp
+; X86-NOBMI2-NEXT:    andl %ecx, %esi
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB335_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl %esi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    xorl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB335_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %esi, %eax
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    je .LBB335_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi,%ecx,8), %edx
+; X86-NOBMI2-NEXT:    jmp .LBB335_5
+; X86-NOBMI2-NEXT:  .LBB335_3:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB335_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_blsi_xor_64_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:    movl %ecx, %esi
+; X86-BMI2-NEXT:    negl %esi
+; X86-BMI2-NEXT:    sbbl %eax, %ebp
+; X86-BMI2-NEXT:    andl %eax, %ebp
+; X86-BMI2-NEXT:    andl %ecx, %esi
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB335_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl %esi, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    xorl %ebp, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB335_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %esi, %eax
+; X86-BMI2-NEXT:    andl %ebp, %edx
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    je .LBB335_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%edi,%ecx,8), %edx
+; X86-BMI2-NEXT:    jmp .LBB335_5
+; X86-BMI2-NEXT:  .LBB335_3:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB335_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_xor_64_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    blsiq %rsi, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB335_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    xorq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB335_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    testq %rcx, %rax
+; X64-BMI2-NEXT:    je .LBB335_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB335_3:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %sub = sub i64 0, %c
+  %and = and i64 %sub, %c
+  %0 = atomicrmw xor ptr %v, i64 %and monotonic, align 8
+  %and3 = and i64 %0, %and
+  %tobool.not = icmp eq i64 %and3, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_or_64_gpr_val(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_or_64_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB336_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB336_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB336_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    orl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB336_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edi, %eax
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_or_64_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB336_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB336_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB336_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    orl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB336_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    andl %edi, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_or_64_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    andl $63, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btsq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $rcx
+; X64-NOBMI2-NEXT:    shlq %cl, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_or_64_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $63, %esi
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btsq %rsi, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %0 = atomicrmw or ptr %v, i64 %shl monotonic, align 8
+  %and = and i64 %0, %shl
+  ret i64 %and
+}
+
+define i64 @atomic_shl2_or_64_gpr_val(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl2_or_64_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl $2, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB337_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB337_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB337_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    orl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB337_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edi, %eax
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl2_or_64_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl $2, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB337_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB337_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB337_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    orl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB337_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    andl %edi, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl2_or_64_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl $2, %edx
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $rcx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB337_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rcx
+; X64-NOBMI2-NEXT:    orq %rdx, %rcx
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB337_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    andq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl2_or_64_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $2, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB337_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    orq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB337_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    andq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl i64 2, %c
+  %0 = atomicrmw or ptr %v, i64 %shl monotonic, align 8
+  %and = and i64 %0, %shl
+  ret i64 %and
+}
+
+define i64 @atomic_shl1_neq_or_64_gpr_val(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_or_64_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB338_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB338_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB338_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    orl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB338_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    incb %cl
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:    shldl %cl, %esi, %edi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB338_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    movl %esi, %edi
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:  .LBB338_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edi, %edx
+; X86-NOBMI2-NEXT:    andl %esi, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_or_64_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB338_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB338_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB338_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    orl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB338_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    incb %cl
+; X86-BMI2-NEXT:    movl $1, %edi
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    shldl %cl, %edi, %esi
+; X86-BMI2-NEXT:    shlxl %ecx, %edi, %edi
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB338_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    movl %edi, %esi
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:  .LBB338_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %esi, %edx
+; X86-BMI2-NEXT:    andl %edi, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_or_64_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB338_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    orq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB338_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    incb %cl
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $rcx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    andq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_or_64_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB338_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    orq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB338_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    incb %sil
+; X64-BMI2-NEXT:    movl $1, %ecx
+; X64-BMI2-NEXT:    shlxq %rsi, %rcx, %rcx
+; X64-BMI2-NEXT:    andq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %0 = atomicrmw or ptr %v, i64 %shl monotonic, align 8
+  %add = add i64 %c, 1
+  %shl1 = shl nuw i64 1, %add
+  %and = and i64 %0, %shl1
+  ret i64 %and
+}
+
+define i64 @atomic_shl1_small_mask_or_64_gpr_val(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_small_mask_or_64_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB339_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %esi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB339_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %esi, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_small_mask_or_64_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    .cfi_offset %esi, -16
+; X86-BMI2-NEXT:    .cfi_offset %edi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl $1, %ecx
+; X86-BMI2-NEXT:    shlxl %eax, %ecx, %edi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB339_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %edi, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB339_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %edi, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_small_mask_or_64_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    andl $31, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btsq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $rcx
+; X64-NOBMI2-NEXT:    shlq %cl, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_small_mask_or_64_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $31, %esi
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btsq %rsi, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 31
+  %shl = shl nuw nsw i64 1, %rem
+  %0 = atomicrmw or ptr %v, i64 %shl monotonic, align 8
+  %and = and i64 %0, %shl
+  ret i64 %and
+}
+
+define i64 @atomic_shl1_mask0_or_64_gpr_val(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_or_64_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB340_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB340_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB340_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    orl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB340_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    shldl %cl, %esi, %edi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB340_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    movl %esi, %edi
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:  .LBB340_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edi, %edx
+; X86-NOBMI2-NEXT:    andl %esi, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_or_64_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB340_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB340_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB340_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    orl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB340_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl $1, %edi
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    shldl %cl, %edi, %esi
+; X86-BMI2-NEXT:    shlxl %ecx, %edi, %edi
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB340_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    movl %edi, %esi
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:  .LBB340_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %esi, %edx
+; X86-BMI2-NEXT:    andl %edi, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_or_64_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    andl $63, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btsq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $rcx
+; X64-NOBMI2-NEXT:    shlq %cl, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_or_64_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $63, %esi
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btsq %rsi, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 63
+  %shl = shl nuw i64 1, %rem
+  %0 = atomicrmw or ptr %v, i64 %shl monotonic, align 8
+  %shl1 = shl nuw i64 1, %c
+  %and = and i64 %0, %shl1
+  ret i64 %and
+}
+
+define i64 @atomic_shl1_mask1_or_64_gpr_val(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_or_64_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB341_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB341_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB341_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    orl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB341_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    shldl %cl, %esi, %edi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB341_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    movl %esi, %edi
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:  .LBB341_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edi, %edx
+; X86-NOBMI2-NEXT:    andl %esi, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_or_64_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB341_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB341_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB341_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    orl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB341_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl $1, %edi
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    shldl %cl, %edi, %esi
+; X86-BMI2-NEXT:    shlxl %ecx, %edi, %edi
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB341_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    movl %edi, %esi
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:  .LBB341_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %esi, %edx
+; X86-BMI2-NEXT:    andl %edi, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_or_64_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    andl $63, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btsq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $rcx
+; X64-NOBMI2-NEXT:    shlq %cl, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_or_64_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $63, %esi
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btsq %rsi, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %0 = atomicrmw or ptr %v, i64 %shl monotonic, align 8
+  %rem = and i64 %c, 63
+  %shl1 = shl nuw i64 1, %rem
+  %and = and i64 %0, %shl1
+  ret i64 %and
+}
+
+define i64 @atomic_shl1_mask01_or_64_gpr_val(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_or_64_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB342_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB342_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB342_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    orl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB342_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edi, %eax
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_or_64_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB342_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB342_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB342_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    orl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB342_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    andl %edi, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_or_64_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    andl $63, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btsq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $rcx
+; X64-NOBMI2-NEXT:    shlq %cl, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_or_64_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $63, %esi
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btsq %rsi, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 63
+  %shl = shl nuw i64 1, %rem
+  %0 = atomicrmw or ptr %v, i64 %shl monotonic, align 8
+  %and = and i64 %0, %shl
+  ret i64 %and
+}
+
+define i64 @atomic_blsi_or_64_gpr_val(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_blsi_or_64_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:    movl %eax, %ebp
+; X86-NOBMI2-NEXT:    negl %ebp
+; X86-NOBMI2-NEXT:    sbbl %ecx, %esi
+; X86-NOBMI2-NEXT:    andl %ecx, %esi
+; X86-NOBMI2-NEXT:    andl %eax, %ebp
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB343_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %ebp, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    orl %esi, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB343_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %ebp, %eax
+; X86-NOBMI2-NEXT:    andl %esi, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_blsi_or_64_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    movl %eax, %ebp
+; X86-BMI2-NEXT:    negl %ebp
+; X86-BMI2-NEXT:    sbbl %ecx, %esi
+; X86-BMI2-NEXT:    andl %ecx, %esi
+; X86-BMI2-NEXT:    andl %eax, %ebp
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB343_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    orl %esi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB343_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    andl %esi, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_or_64_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    blsiq %rsi, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB343_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    orq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB343_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    andq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %sub = sub i64 0, %c
+  %and = and i64 %sub, %c
+  %0 = atomicrmw or ptr %v, i64 %and monotonic, align 8
+  %and3 = and i64 %0, %and
+  ret i64 %and3
+}
+
+define i64 @atomic_shl1_or_64_gpr_valz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_or_64_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB344_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB344_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB344_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    orl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB344_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    notl %eax
+; X86-NOBMI2-NEXT:    notl %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-NOBMI2-NEXT:    shrl %cl, %edx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    jne .LBB344_6
+; X86-NOBMI2-NEXT:  # %bb.5: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:  .LBB344_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl $1, %edx
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_or_64_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB344_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB344_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB344_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    orl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB344_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    notl %eax
+; X86-BMI2-NEXT:    notl %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB344_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    shrxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:  .LBB344_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_or_64_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB344_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    orq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB344_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btq %rcx, %rax
+; X64-NOBMI2-NEXT:    setae %dl
+; X64-NOBMI2-NEXT:    movq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_or_64_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB344_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    orq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB344_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    btq %rsi, %rax
+; X64-BMI2-NEXT:    setae %cl
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %0 = atomicrmw or ptr %v, i64 %shl monotonic, align 8
+  %1 = xor i64 %0, -1
+  %2 = lshr i64 %1, %c
+  %conv = and i64 %2, 1
+  ret i64 %conv
+}
+
+define i64 @atomic_shl2_or_64_gpr_valz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl2_or_64_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl $2, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB345_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB345_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB345_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    orl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB345_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edi, %eax
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    sete %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl2_or_64_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl $2, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB345_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB345_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB345_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    orl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB345_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    andl %edi, %edx
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    sete %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl2_or_64_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl $2, %edx
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $rcx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB345_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rcx
+; X64-NOBMI2-NEXT:    orq %rdx, %rcx
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB345_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    testq %rdx, %rax
+; X64-NOBMI2-NEXT:    sete %cl
+; X64-NOBMI2-NEXT:    movq %rcx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl2_or_64_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $2, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rdx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB345_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rcx
+; X64-BMI2-NEXT:    orq %rdx, %rcx
+; X64-BMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB345_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    testq %rdx, %rax
+; X64-BMI2-NEXT:    sete %cl
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl i64 2, %c
+  %0 = atomicrmw or ptr %v, i64 %shl monotonic, align 8
+  %and = and i64 %0, %shl
+  %tobool.not = icmp eq i64 %and, 0
+  %conv = zext i1 %tobool.not to i64
+  ret i64 %conv
+}
+
+define i64 @atomic_shl1_neq_or_64_gpr_valz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_or_64_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB346_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB346_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB346_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    orl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB346_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    notl %eax
+; X86-NOBMI2-NEXT:    notl %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    incb %cl
+; X86-NOBMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-NOBMI2-NEXT:    shrl %cl, %edx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    jne .LBB346_6
+; X86-NOBMI2-NEXT:  # %bb.5: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:  .LBB346_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl $1, %edx
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_or_64_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB346_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB346_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB346_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    orl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB346_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    notl %eax
+; X86-BMI2-NEXT:    notl %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    incb %cl
+; X86-BMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB346_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    shrxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:  .LBB346_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_or_64_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB346_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    orq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB346_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    incb %cl
+; X64-NOBMI2-NEXT:    movzbl %cl, %edx
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    btq %rdx, %rax
+; X64-NOBMI2-NEXT:    setae %cl
+; X64-NOBMI2-NEXT:    movq %rcx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_or_64_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB346_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    orq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB346_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    incb %sil
+; X64-BMI2-NEXT:    movzbl %sil, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    btq %rdx, %rax
+; X64-BMI2-NEXT:    setae %cl
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %0 = atomicrmw or ptr %v, i64 %shl monotonic, align 8
+  %add = add i64 %c, 1
+  %1 = xor i64 %0, -1
+  %2 = lshr i64 %1, %add
+  %conv = and i64 %2, 1
+  ret i64 %conv
+}
+
+define i64 @atomic_shl1_small_mask_or_64_gpr_valz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_small_mask_or_64_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $31, %ecx
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    movl %ecx, %ebp
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB347_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB347_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    btl %ebp, %eax
+; X86-NOBMI2-NEXT:    setae %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_small_mask_or_64_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    andl $31, %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %esi, %eax, %ebp
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB347_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB347_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    btl %esi, %eax
+; X86-BMI2-NEXT:    setae %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_small_mask_or_64_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    andl $31, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB347_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    orq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB347_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btl %ecx, %eax
+; X64-NOBMI2-NEXT:    setae %dl
+; X64-NOBMI2-NEXT:    movq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_small_mask_or_64_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $31, %esi
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB347_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    orq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB347_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    btl %esi, %eax
+; X64-BMI2-NEXT:    setae %cl
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 31
+  %shl = shl nuw nsw i64 1, %rem
+  %0 = atomicrmw or ptr %v, i64 %shl monotonic, align 8
+  %1 = xor i64 %0, -1
+  %2 = lshr i64 %1, %rem
+  %conv = and i64 %2, 1
+  ret i64 %conv
+}
+
+define i64 @atomic_shl1_mask0_or_64_gpr_valz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_or_64_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB348_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB348_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB348_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    orl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB348_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    notl %eax
+; X86-NOBMI2-NEXT:    notl %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-NOBMI2-NEXT:    shrl %cl, %edx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    jne .LBB348_6
+; X86-NOBMI2-NEXT:  # %bb.5: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:  .LBB348_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl $1, %edx
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_or_64_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB348_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB348_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB348_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    orl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB348_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    notl %eax
+; X86-BMI2-NEXT:    notl %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB348_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    shrxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:  .LBB348_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_or_64_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB348_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    orq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB348_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btq %rcx, %rax
+; X64-NOBMI2-NEXT:    setae %dl
+; X64-NOBMI2-NEXT:    movq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_or_64_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB348_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    orq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB348_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    btq %rsi, %rax
+; X64-BMI2-NEXT:    setae %cl
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 63
+  %shl = shl nuw i64 1, %rem
+  %0 = atomicrmw or ptr %v, i64 %shl monotonic, align 8
+  %1 = xor i64 %0, -1
+  %2 = lshr i64 %1, %c
+  %conv = and i64 %2, 1
+  ret i64 %conv
+}
+
+define i64 @atomic_shl1_mask1_or_64_gpr_valz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_or_64_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB349_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB349_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB349_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    orl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB349_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    notl %eax
+; X86-NOBMI2-NEXT:    notl %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-NOBMI2-NEXT:    shrl %cl, %edx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    jne .LBB349_6
+; X86-NOBMI2-NEXT:  # %bb.5: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:  .LBB349_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl $1, %edx
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_or_64_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB349_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB349_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB349_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    orl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB349_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    notl %eax
+; X86-BMI2-NEXT:    notl %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB349_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    shrxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:  .LBB349_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_or_64_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB349_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    orq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB349_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btq %rcx, %rax
+; X64-NOBMI2-NEXT:    setae %dl
+; X64-NOBMI2-NEXT:    movq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_or_64_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB349_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    orq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB349_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    btq %rsi, %rax
+; X64-BMI2-NEXT:    setae %cl
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %0 = atomicrmw or ptr %v, i64 %shl monotonic, align 8
+  %rem = and i64 %c, 63
+  %1 = xor i64 %0, -1
+  %2 = lshr i64 %1, %rem
+  %conv = and i64 %2, 1
+  ret i64 %conv
+}
+
+define i64 @atomic_shl1_mask01_or_64_gpr_valz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_or_64_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    pushl %eax
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 24
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $63, %ecx
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    movl %ecx, (%esp) # 4-byte Spill
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB350_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB350_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB350_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    orl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB350_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    notl %eax
+; X86-NOBMI2-NEXT:    notl %edx
+; X86-NOBMI2-NEXT:    movl (%esp), %ecx # 4-byte Reload
+; X86-NOBMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-NOBMI2-NEXT:    shrl %cl, %edx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    jne .LBB350_6
+; X86-NOBMI2-NEXT:  # %bb.5: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:  .LBB350_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl $1, %edx
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    addl $4, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_or_64_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    pushl %eax
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 24
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    andl $63, %ecx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    movl %ecx, (%esp) # 4-byte Spill
+; X86-BMI2-NEXT:    je .LBB350_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB350_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB350_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    orl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB350_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    notl %eax
+; X86-BMI2-NEXT:    notl %edx
+; X86-BMI2-NEXT:    movl (%esp), %ecx # 4-byte Reload
+; X86-BMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB350_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    shrxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:  .LBB350_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    addl $4, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_or_64_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    andl $63, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB350_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    orq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB350_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btq %rcx, %rax
+; X64-NOBMI2-NEXT:    setae %dl
+; X64-NOBMI2-NEXT:    movq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_or_64_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $63, %esi
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB350_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    orq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB350_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    btq %rsi, %rax
+; X64-BMI2-NEXT:    setae %cl
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 63
+  %shl = shl nuw i64 1, %rem
+  %0 = atomicrmw or ptr %v, i64 %shl monotonic, align 8
+  %1 = xor i64 %0, -1
+  %2 = lshr i64 %1, %rem
+  %conv = and i64 %2, 1
+  ret i64 %conv
+}
+
+define i64 @atomic_blsi_or_64_gpr_valz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_blsi_or_64_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:    movl %eax, %ebp
+; X86-NOBMI2-NEXT:    negl %ebp
+; X86-NOBMI2-NEXT:    sbbl %ecx, %esi
+; X86-NOBMI2-NEXT:    andl %ecx, %esi
+; X86-NOBMI2-NEXT:    andl %eax, %ebp
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB351_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %ebp, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    orl %esi, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB351_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %ebp, %eax
+; X86-NOBMI2-NEXT:    andl %esi, %edx
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    sete %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_blsi_or_64_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    movl %eax, %ebp
+; X86-BMI2-NEXT:    negl %ebp
+; X86-BMI2-NEXT:    sbbl %ecx, %esi
+; X86-BMI2-NEXT:    andl %ecx, %esi
+; X86-BMI2-NEXT:    andl %eax, %ebp
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB351_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    orl %esi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB351_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    andl %esi, %edx
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    sete %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_or_64_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    blsiq %rsi, %rdx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB351_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rcx
+; X64-BMI2-NEXT:    orq %rdx, %rcx
+; X64-BMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB351_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    testq %rdx, %rax
+; X64-BMI2-NEXT:    sete %cl
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %sub = sub i64 0, %c
+  %and = and i64 %sub, %c
+  %0 = atomicrmw or ptr %v, i64 %and monotonic, align 8
+  %and3 = and i64 %0, %and
+  %tobool.not = icmp eq i64 %and3, 0
+  %conv = zext i1 %tobool.not to i64
+  ret i64 %conv
+}
+
+define i64 @atomic_shl1_or_64_gpr_valnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_or_64_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB352_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB352_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB352_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    orl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB352_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-NOBMI2-NEXT:    shrl %cl, %edx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    jne .LBB352_6
+; X86-NOBMI2-NEXT:  # %bb.5: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:  .LBB352_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl $1, %edx
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_or_64_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB352_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB352_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB352_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    orl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB352_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB352_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    shrxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:  .LBB352_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_or_64_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB352_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    orq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB352_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btq %rcx, %rax
+; X64-NOBMI2-NEXT:    setb %dl
+; X64-NOBMI2-NEXT:    movq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_or_64_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB352_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    orq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB352_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrxq %rsi, %rax, %rax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %0 = atomicrmw or ptr %v, i64 %shl monotonic, align 8
+  %1 = lshr i64 %0, %c
+  %conv = and i64 %1, 1
+  ret i64 %conv
+}
+
+define i64 @atomic_shl2_or_64_gpr_valnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl2_or_64_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl $2, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB353_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB353_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB353_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    orl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB353_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edi, %eax
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    setne %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl2_or_64_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl $2, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB353_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB353_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB353_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    orl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB353_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    andl %edi, %edx
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    setne %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl2_or_64_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl $2, %edx
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $rcx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB353_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rcx
+; X64-NOBMI2-NEXT:    orq %rdx, %rcx
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB353_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    testq %rdx, %rax
+; X64-NOBMI2-NEXT:    setne %cl
+; X64-NOBMI2-NEXT:    movq %rcx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl2_or_64_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $2, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rdx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB353_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rcx
+; X64-BMI2-NEXT:    orq %rdx, %rcx
+; X64-BMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB353_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    testq %rdx, %rax
+; X64-BMI2-NEXT:    setne %cl
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl i64 2, %c
+  %0 = atomicrmw or ptr %v, i64 %shl monotonic, align 8
+  %and = and i64 %0, %shl
+  %tobool = icmp ne i64 %and, 0
+  %conv = zext i1 %tobool to i64
+  ret i64 %conv
+}
+
+define i64 @atomic_shl1_neq_or_64_gpr_valnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_or_64_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB354_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB354_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB354_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    orl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB354_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    incb %cl
+; X86-NOBMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-NOBMI2-NEXT:    shrl %cl, %edx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    jne .LBB354_6
+; X86-NOBMI2-NEXT:  # %bb.5: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:  .LBB354_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl $1, %edx
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_or_64_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB354_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB354_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB354_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    orl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB354_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    incb %cl
+; X86-BMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB354_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    shrxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:  .LBB354_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_or_64_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB354_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    orq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB354_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    incb %cl
+; X64-NOBMI2-NEXT:    movzbl %cl, %edx
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    btq %rdx, %rax
+; X64-NOBMI2-NEXT:    setb %cl
+; X64-NOBMI2-NEXT:    movq %rcx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_or_64_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB354_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    orq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB354_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    incb %sil
+; X64-BMI2-NEXT:    shrxq %rsi, %rax, %rax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %0 = atomicrmw or ptr %v, i64 %shl monotonic, align 8
+  %add = add i64 %c, 1
+  %1 = lshr i64 %0, %add
+  %conv = and i64 %1, 1
+  ret i64 %conv
+}
+
+define i64 @atomic_shl1_small_mask_or_64_gpr_valnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_small_mask_or_64_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $31, %ecx
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    movl %ecx, %ebp
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB355_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB355_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    btl %ebp, %eax
+; X86-NOBMI2-NEXT:    setb %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_small_mask_or_64_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    andl $31, %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %esi, %eax, %ebp
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB355_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB355_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    shrxl %esi, %eax, %eax
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_small_mask_or_64_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    andl $31, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB355_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    orq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB355_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btl %ecx, %eax
+; X64-NOBMI2-NEXT:    setb %dl
+; X64-NOBMI2-NEXT:    movq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_small_mask_or_64_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $31, %esi
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB355_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    orq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB355_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrxq %rsi, %rax, %rax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 31
+  %shl = shl nuw nsw i64 1, %rem
+  %0 = atomicrmw or ptr %v, i64 %shl monotonic, align 8
+  %1 = lshr i64 %0, %rem
+  %conv = and i64 %1, 1
+  ret i64 %conv
+}
+
+define i64 @atomic_shl1_mask0_or_64_gpr_valnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_or_64_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB356_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB356_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB356_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    orl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB356_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-NOBMI2-NEXT:    shrl %cl, %edx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    jne .LBB356_6
+; X86-NOBMI2-NEXT:  # %bb.5: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:  .LBB356_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl $1, %edx
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_or_64_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB356_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB356_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB356_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    orl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB356_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB356_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    shrxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:  .LBB356_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_or_64_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB356_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    orq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB356_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btq %rcx, %rax
+; X64-NOBMI2-NEXT:    setb %dl
+; X64-NOBMI2-NEXT:    movq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_or_64_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB356_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    orq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB356_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrxq %rsi, %rax, %rax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 63
+  %shl = shl nuw i64 1, %rem
+  %0 = atomicrmw or ptr %v, i64 %shl monotonic, align 8
+  %1 = lshr i64 %0, %c
+  %conv = and i64 %1, 1
+  ret i64 %conv
+}
+
+define i64 @atomic_shl1_mask1_or_64_gpr_valnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_or_64_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB357_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB357_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB357_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    orl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB357_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-NOBMI2-NEXT:    shrl %cl, %edx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    jne .LBB357_6
+; X86-NOBMI2-NEXT:  # %bb.5: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:  .LBB357_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl $1, %edx
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_or_64_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB357_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB357_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB357_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    orl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB357_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB357_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    shrxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:  .LBB357_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_or_64_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB357_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    orq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB357_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btq %rcx, %rax
+; X64-NOBMI2-NEXT:    setb %dl
+; X64-NOBMI2-NEXT:    movq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_or_64_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB357_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    orq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB357_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrxq %rsi, %rax, %rax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %0 = atomicrmw or ptr %v, i64 %shl monotonic, align 8
+  %rem = and i64 %c, 63
+  %1 = lshr i64 %0, %rem
+  %conv = and i64 %1, 1
+  ret i64 %conv
+}
+
+define i64 @atomic_shl1_mask01_or_64_gpr_valnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_or_64_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    pushl %eax
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 24
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $63, %ecx
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    movl %ecx, (%esp) # 4-byte Spill
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB358_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB358_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB358_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    orl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB358_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl (%esp), %ecx # 4-byte Reload
+; X86-NOBMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-NOBMI2-NEXT:    shrl %cl, %edx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    jne .LBB358_6
+; X86-NOBMI2-NEXT:  # %bb.5: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:  .LBB358_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl $1, %edx
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    addl $4, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_or_64_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    pushl %eax
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 24
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    andl $63, %ecx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    movl %ecx, (%esp) # 4-byte Spill
+; X86-BMI2-NEXT:    je .LBB358_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB358_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB358_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    orl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB358_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl (%esp), %ecx # 4-byte Reload
+; X86-BMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB358_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    shrxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:  .LBB358_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    addl $4, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_or_64_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    andl $63, %ecx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB358_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    orq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB358_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btq %rcx, %rax
+; X64-NOBMI2-NEXT:    setb %dl
+; X64-NOBMI2-NEXT:    movq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_or_64_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $63, %esi
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB358_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    orq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB358_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrxq %rsi, %rax, %rax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 63
+  %shl = shl nuw i64 1, %rem
+  %0 = atomicrmw or ptr %v, i64 %shl monotonic, align 8
+  %1 = lshr i64 %0, %rem
+  %conv = and i64 %1, 1
+  ret i64 %conv
+}
+
+define i64 @atomic_blsi_or_64_gpr_valnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_blsi_or_64_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:    movl %eax, %ebp
+; X86-NOBMI2-NEXT:    negl %ebp
+; X86-NOBMI2-NEXT:    sbbl %ecx, %esi
+; X86-NOBMI2-NEXT:    andl %ecx, %esi
+; X86-NOBMI2-NEXT:    andl %eax, %ebp
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB359_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %ebp, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    orl %esi, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB359_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %ebp, %eax
+; X86-NOBMI2-NEXT:    andl %esi, %edx
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    setne %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_blsi_or_64_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    movl %eax, %ebp
+; X86-BMI2-NEXT:    negl %ebp
+; X86-BMI2-NEXT:    sbbl %ecx, %esi
+; X86-BMI2-NEXT:    andl %ecx, %esi
+; X86-BMI2-NEXT:    andl %eax, %ebp
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB359_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    orl %esi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB359_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    andl %esi, %edx
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    setne %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_or_64_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    blsiq %rsi, %rdx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB359_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rcx
+; X64-BMI2-NEXT:    orq %rdx, %rcx
+; X64-BMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB359_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    testq %rdx, %rax
+; X64-BMI2-NEXT:    setne %cl
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %sub = sub i64 0, %c
+  %and = and i64 %sub, %c
+  %0 = atomicrmw or ptr %v, i64 %and monotonic, align 8
+  %and3 = and i64 %0, %and
+  %tobool = icmp ne i64 %and3, 0
+  %conv = zext i1 %tobool to i64
+  ret i64 %conv
+}
+
+define i64 @atomic_shl1_or_64_gpr_br(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_or_64_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB360_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB360_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB360_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    orl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB360_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edi, %eax
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    je .LBB360_5
+; X86-NOBMI2-NEXT:  # %bb.6: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-NOBMI2-NEXT:    jmp .LBB360_7
+; X86-NOBMI2-NEXT:  .LBB360_5:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB360_7: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_or_64_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB360_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB360_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB360_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    orl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB360_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    andl %edi, %edx
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    je .LBB360_5
+; X86-BMI2-NEXT:  # %bb.6: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-BMI2-NEXT:    jmp .LBB360_7
+; X86-BMI2-NEXT:  .LBB360_5:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB360_7: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_or_64_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $63, %eax
+; X64-NOBMI2-NEXT:    lock btsq %rax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB360_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB360_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_or_64_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $63, %eax
+; X64-BMI2-NEXT:    lock btsq %rax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB360_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB360_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %0 = atomicrmw or ptr %v, i64 %shl monotonic, align 8
+  %and = and i64 %0, %shl
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl2_or_64_gpr_br(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl2_or_64_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $2, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB361_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB361_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB361_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    orl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB361_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edi, %eax
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    je .LBB361_5
+; X86-NOBMI2-NEXT:  # %bb.6: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-NOBMI2-NEXT:    jmp .LBB361_7
+; X86-NOBMI2-NEXT:  .LBB361_5:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB361_7: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl2_or_64_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $2, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB361_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB361_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB361_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    orl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB361_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    andl %edi, %edx
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    je .LBB361_5
+; X86-BMI2-NEXT:  # %bb.6: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-BMI2-NEXT:    jmp .LBB361_7
+; X86-BMI2-NEXT:  .LBB361_5:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB361_7: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl2_or_64_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl $2, %edx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB361_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    orq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB361_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    testq %rdx, %rax
+; X64-NOBMI2-NEXT:    je .LBB361_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rcx,8), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB361_3:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl2_or_64_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $2, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB361_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    orq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB361_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    testq %rcx, %rax
+; X64-BMI2-NEXT:    je .LBB361_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB361_3:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl i64 2, %c
+  %0 = atomicrmw or ptr %v, i64 %shl monotonic, align 8
+  %and = and i64 %0, %shl
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_neq_or_64_gpr_br(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_or_64_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %esi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB362_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %esi, %ebp
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:  .LBB362_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB362_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %esi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    orl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB362_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    incb %cl
+; X86-NOBMI2-NEXT:    movl $1, %ebx
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %ebx, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %ebx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB362_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    movl %ebx, %ebp
+; X86-NOBMI2-NEXT:    xorl %ebx, %ebx
+; X86-NOBMI2-NEXT:  .LBB362_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    andl %ebx, %eax
+; X86-NOBMI2-NEXT:    orl %edx, %eax
+; X86-NOBMI2-NEXT:    je .LBB362_7
+; X86-NOBMI2-NEXT:  # %bb.8: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi,%ecx,8), %esi
+; X86-NOBMI2-NEXT:    jmp .LBB362_9
+; X86-NOBMI2-NEXT:  .LBB362_7:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB362_9: # %return
+; X86-NOBMI2-NEXT:    movl %esi, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_or_64_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %esi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB362_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %esi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB362_2: # %entry
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB362_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    orl %esi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB362_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    # kill: def $cl killed $cl killed $ecx def $ecx
+; X86-BMI2-NEXT:    incb %cl
+; X86-BMI2-NEXT:    movl $1, %ebp
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    xorl %ebx, %ebx
+; X86-BMI2-NEXT:    shldl %cl, %ebp, %ebx
+; X86-BMI2-NEXT:    shlxl %ecx, %ebp, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB362_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    movl %ebp, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB362_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebx, %edx
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    orl %edx, %eax
+; X86-BMI2-NEXT:    je .LBB362_7
+; X86-BMI2-NEXT:  # %bb.8: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%edi,%ecx,8), %esi
+; X86-BMI2-NEXT:    jmp .LBB362_9
+; X86-BMI2-NEXT:  .LBB362_7:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB362_9: # %return
+; X86-BMI2-NEXT:    movl %esi, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_or_64_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB362_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    orq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB362_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    leal 1(%rcx), %edx
+; X64-NOBMI2-NEXT:    movzbl %dl, %edx
+; X64-NOBMI2-NEXT:    btq %rdx, %rax
+; X64-NOBMI2-NEXT:    jae .LBB362_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rcx,8), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB362_3:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_or_64_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB362_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    orq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB362_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    leal 1(%rsi), %ecx
+; X64-BMI2-NEXT:    movzbl %cl, %ecx
+; X64-BMI2-NEXT:    btq %rcx, %rax
+; X64-BMI2-NEXT:    jae .LBB362_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB362_3:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %0 = atomicrmw or ptr %v, i64 %shl monotonic, align 8
+  %add = add i64 %c, 1
+  %shl1 = shl nuw i64 1, %add
+  %and = and i64 %0, %shl1
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_small_mask_or_64_gpr_br(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_small_mask_or_64_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $31, %ecx
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    movl %ecx, %ebp
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB363_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB363_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    testl %edi, %eax
+; X86-NOBMI2-NEXT:    je .LBB363_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movl (%esi,%ebp,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi,%ebp,8), %edx
+; X86-NOBMI2-NEXT:    jmp .LBB363_5
+; X86-NOBMI2-NEXT:  .LBB363_3:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB363_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_small_mask_or_64_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    andl $31, %edi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %edi, %eax, %ebp
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB363_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB363_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    testl %ebp, %eax
+; X86-BMI2-NEXT:    je .LBB363_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movl (%esi,%edi,8), %eax
+; X86-BMI2-NEXT:    movl 4(%esi,%edi,8), %edx
+; X86-BMI2-NEXT:    jmp .LBB363_5
+; X86-BMI2-NEXT:  .LBB363_3:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB363_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_small_mask_or_64_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    andl $31, %esi
+; X64-NOBMI2-NEXT:    lock btsq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB363_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB363_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_small_mask_or_64_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $31, %esi
+; X64-BMI2-NEXT:    lock btsq %rsi, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB363_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB363_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 31
+  %shl = shl nuw nsw i64 1, %rem
+  %0 = atomicrmw or ptr %v, i64 %shl monotonic, align 8
+  %and = and i64 %0, %shl
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %rem
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_mask0_or_64_gpr_br(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_or_64_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %esi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB364_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %esi, %ebp
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:  .LBB364_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB364_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %esi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    orl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB364_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl $1, %ebx
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    shldl %cl, %ebx, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %ebx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB364_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    movl %ebx, %ebp
+; X86-NOBMI2-NEXT:    xorl %ebx, %ebx
+; X86-NOBMI2-NEXT:  .LBB364_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    andl %ebx, %eax
+; X86-NOBMI2-NEXT:    orl %edx, %eax
+; X86-NOBMI2-NEXT:    je .LBB364_7
+; X86-NOBMI2-NEXT:  # %bb.8: # %if.then
+; X86-NOBMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi,%ecx,8), %esi
+; X86-NOBMI2-NEXT:    jmp .LBB364_9
+; X86-NOBMI2-NEXT:  .LBB364_7:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB364_9: # %return
+; X86-NOBMI2-NEXT:    movl %esi, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_or_64_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %esi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB364_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %esi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB364_2: # %entry
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB364_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    orl %esi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB364_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl $1, %ebp
+; X86-BMI2-NEXT:    xorl %ebx, %ebx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    shldl %cl, %ebp, %ebx
+; X86-BMI2-NEXT:    shlxl %ecx, %ebp, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB364_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    movl %ebp, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB364_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebx, %edx
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    orl %edx, %eax
+; X86-BMI2-NEXT:    je .LBB364_7
+; X86-BMI2-NEXT:  # %bb.8: # %if.then
+; X86-BMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%edi,%ecx,8), %edx
+; X86-BMI2-NEXT:    jmp .LBB364_9
+; X86-BMI2-NEXT:  .LBB364_7:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:  .LBB364_9: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_or_64_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $63, %eax
+; X64-NOBMI2-NEXT:    lock btsq %rax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB364_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB364_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_or_64_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $63, %eax
+; X64-BMI2-NEXT:    lock btsq %rax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB364_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB364_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 63
+  %shl = shl nuw i64 1, %rem
+  %0 = atomicrmw or ptr %v, i64 %shl monotonic, align 8
+  %shl1 = shl nuw i64 1, %c
+  %and = and i64 %0, %shl1
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_mask1_or_64_gpr_br(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_or_64_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %esi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB365_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %esi, %ebp
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:  .LBB365_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB365_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %esi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    orl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB365_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl $1, %ebx
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    shldl %cl, %ebx, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %ebx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB365_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    movl %ebx, %ebp
+; X86-NOBMI2-NEXT:    xorl %ebx, %ebx
+; X86-NOBMI2-NEXT:  .LBB365_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    andl %ebx, %eax
+; X86-NOBMI2-NEXT:    orl %edx, %eax
+; X86-NOBMI2-NEXT:    je .LBB365_7
+; X86-NOBMI2-NEXT:  # %bb.8: # %if.then
+; X86-NOBMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi,%ecx,8), %esi
+; X86-NOBMI2-NEXT:    jmp .LBB365_9
+; X86-NOBMI2-NEXT:  .LBB365_7:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB365_9: # %return
+; X86-NOBMI2-NEXT:    movl %esi, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_or_64_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %esi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB365_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %esi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB365_2: # %entry
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB365_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    orl %esi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB365_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl $1, %ebp
+; X86-BMI2-NEXT:    xorl %ebx, %ebx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    shldl %cl, %ebp, %ebx
+; X86-BMI2-NEXT:    shlxl %ecx, %ebp, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB365_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    movl %ebp, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB365_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebx, %edx
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    orl %edx, %eax
+; X86-BMI2-NEXT:    je .LBB365_7
+; X86-BMI2-NEXT:  # %bb.8: # %if.then
+; X86-BMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%edi,%ecx,8), %edx
+; X86-BMI2-NEXT:    jmp .LBB365_9
+; X86-BMI2-NEXT:  .LBB365_7:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:  .LBB365_9: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_or_64_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $63, %eax
+; X64-NOBMI2-NEXT:    lock btsq %rax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB365_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB365_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_or_64_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $63, %eax
+; X64-BMI2-NEXT:    lock btsq %rax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB365_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB365_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %0 = atomicrmw or ptr %v, i64 %shl monotonic, align 8
+  %rem = and i64 %c, 63
+  %shl1 = shl nuw i64 1, %rem
+  %and = and i64 %0, %shl1
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_mask01_or_64_gpr_br(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_or_64_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB366_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB366_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB366_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    orl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB366_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edi, %eax
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    je .LBB366_5
+; X86-NOBMI2-NEXT:  # %bb.6: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-NOBMI2-NEXT:    jmp .LBB366_7
+; X86-NOBMI2-NEXT:  .LBB366_5:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB366_7: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_or_64_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB366_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB366_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB366_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    orl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB366_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    andl %edi, %edx
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    je .LBB366_5
+; X86-BMI2-NEXT:  # %bb.6: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-BMI2-NEXT:    jmp .LBB366_7
+; X86-BMI2-NEXT:  .LBB366_5:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB366_7: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_or_64_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $63, %eax
+; X64-NOBMI2-NEXT:    lock btsq %rax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB366_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB366_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_or_64_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $63, %eax
+; X64-BMI2-NEXT:    lock btsq %rax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB366_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB366_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 63
+  %shl = shl nuw i64 1, %rem
+  %0 = atomicrmw or ptr %v, i64 %shl monotonic, align 8
+  %and = and i64 %0, %shl
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_blsi_or_64_gpr_br(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_blsi_or_64_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    movl %ecx, %esi
+; X86-NOBMI2-NEXT:    negl %esi
+; X86-NOBMI2-NEXT:    sbbl %eax, %ebp
+; X86-NOBMI2-NEXT:    andl %eax, %ebp
+; X86-NOBMI2-NEXT:    andl %ecx, %esi
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB367_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %esi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    orl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB367_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %esi, %eax
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    je .LBB367_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi,%ecx,8), %edx
+; X86-NOBMI2-NEXT:    jmp .LBB367_5
+; X86-NOBMI2-NEXT:  .LBB367_3:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB367_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_blsi_or_64_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:    movl %ecx, %esi
+; X86-BMI2-NEXT:    negl %esi
+; X86-BMI2-NEXT:    sbbl %eax, %ebp
+; X86-BMI2-NEXT:    andl %eax, %ebp
+; X86-BMI2-NEXT:    andl %ecx, %esi
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB367_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %esi, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    orl %ebp, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB367_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %esi, %eax
+; X86-BMI2-NEXT:    andl %ebp, %edx
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    je .LBB367_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%edi,%ecx,8), %edx
+; X86-BMI2-NEXT:    jmp .LBB367_5
+; X86-BMI2-NEXT:  .LBB367_3:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB367_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_or_64_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    blsiq %rsi, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB367_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    orq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB367_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    testq %rcx, %rax
+; X64-BMI2-NEXT:    je .LBB367_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB367_3:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %sub = sub i64 0, %c
+  %and = and i64 %sub, %c
+  %0 = atomicrmw or ptr %v, i64 %and monotonic, align 8
+  %and3 = and i64 %0, %and
+  %tobool.not = icmp eq i64 %and3, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_or_64_gpr_brz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_or_64_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB368_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB368_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB368_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    orl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB368_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edi, %eax
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    je .LBB368_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jmp .LBB368_7
+; X86-NOBMI2-NEXT:  .LBB368_6: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-NOBMI2-NEXT:  .LBB368_7: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_or_64_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB368_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB368_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB368_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    orl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB368_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    andl %edi, %edx
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    je .LBB368_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jmp .LBB368_7
+; X86-BMI2-NEXT:  .LBB368_6: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-BMI2-NEXT:  .LBB368_7: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_or_64_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $63, %eax
+; X64-NOBMI2-NEXT:    lock btsq %rax, (%rdi)
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    jae .LBB368_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB368_1: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_or_64_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $63, %eax
+; X64-BMI2-NEXT:    lock btsq %rax, (%rdi)
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    jae .LBB368_1
+; X64-BMI2-NEXT:  # %bb.2: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB368_1: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %0 = atomicrmw or ptr %v, i64 %shl monotonic, align 8
+  %and = and i64 %0, %shl
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl2_or_64_gpr_brz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl2_or_64_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $2, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB369_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB369_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB369_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    orl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB369_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edi, %eax
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    je .LBB369_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jmp .LBB369_7
+; X86-NOBMI2-NEXT:  .LBB369_6: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-NOBMI2-NEXT:  .LBB369_7: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl2_or_64_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $2, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB369_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB369_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB369_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    orl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB369_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    andl %edi, %edx
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    je .LBB369_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jmp .LBB369_7
+; X86-BMI2-NEXT:  .LBB369_6: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-BMI2-NEXT:  .LBB369_7: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl2_or_64_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl $2, %esi
+; X64-NOBMI2-NEXT:    shlq %cl, %rsi
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB369_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rdx
+; X64-NOBMI2-NEXT:    orq %rsi, %rdx
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB369_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movl $123, %edx
+; X64-NOBMI2-NEXT:    testq %rsi, %rax
+; X64-NOBMI2-NEXT:    je .LBB369_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %return
+; X64-NOBMI2-NEXT:    movq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB369_3: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rcx,8), %rdx
+; X64-NOBMI2-NEXT:    movq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl2_or_64_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $2, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rdx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB369_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rcx
+; X64-BMI2-NEXT:    orq %rdx, %rcx
+; X64-BMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB369_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movl $123, %ecx
+; X64-BMI2-NEXT:    testq %rdx, %rax
+; X64-BMI2-NEXT:    je .LBB369_3
+; X64-BMI2-NEXT:  # %bb.4: # %return
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB369_3: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rcx
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl i64 2, %c
+  %0 = atomicrmw or ptr %v, i64 %shl monotonic, align 8
+  %and = and i64 %0, %shl
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_neq_or_64_gpr_brz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_or_64_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %esi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB370_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %esi, %ebp
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:  .LBB370_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB370_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %esi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    orl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB370_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    incb %cl
+; X86-NOBMI2-NEXT:    movl $1, %ebx
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %ebx, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %ebx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB370_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    movl %ebx, %ebp
+; X86-NOBMI2-NEXT:    xorl %ebx, %ebx
+; X86-NOBMI2-NEXT:  .LBB370_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    andl %ebx, %eax
+; X86-NOBMI2-NEXT:    movl $123, %ecx
+; X86-NOBMI2-NEXT:    orl %edx, %eax
+; X86-NOBMI2-NEXT:    jne .LBB370_8
+; X86-NOBMI2-NEXT:  # %bb.7: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl (%edi,%eax,8), %ecx
+; X86-NOBMI2-NEXT:    movl 4(%edi,%eax,8), %esi
+; X86-NOBMI2-NEXT:  .LBB370_8: # %return
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    movl %esi, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_or_64_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %esi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB370_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %esi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB370_2: # %entry
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB370_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    orl %esi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB370_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    # kill: def $cl killed $cl killed $ecx def $ecx
+; X86-BMI2-NEXT:    incb %cl
+; X86-BMI2-NEXT:    movl $1, %ebp
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    xorl %ebx, %ebx
+; X86-BMI2-NEXT:    shldl %cl, %ebp, %ebx
+; X86-BMI2-NEXT:    shlxl %ecx, %ebp, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB370_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    movl %ebp, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB370_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebx, %edx
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    movl $123, %ecx
+; X86-BMI2-NEXT:    orl %edx, %eax
+; X86-BMI2-NEXT:    jne .LBB370_8
+; X86-BMI2-NEXT:  # %bb.7: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl (%edi,%eax,8), %ecx
+; X86-BMI2-NEXT:    movl 4(%edi,%eax,8), %esi
+; X86-BMI2-NEXT:  .LBB370_8: # %return
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    movl %esi, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_or_64_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB370_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    orq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB370_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    leal 1(%rcx), %edx
+; X64-NOBMI2-NEXT:    movzbl %dl, %esi
+; X64-NOBMI2-NEXT:    movl $123, %edx
+; X64-NOBMI2-NEXT:    btq %rsi, %rax
+; X64-NOBMI2-NEXT:    jae .LBB370_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %return
+; X64-NOBMI2-NEXT:    movq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB370_3: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rcx,8), %rdx
+; X64-NOBMI2-NEXT:    movq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_or_64_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB370_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    orq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB370_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    leal 1(%rsi), %ecx
+; X64-BMI2-NEXT:    movzbl %cl, %edx
+; X64-BMI2-NEXT:    movl $123, %ecx
+; X64-BMI2-NEXT:    btq %rdx, %rax
+; X64-BMI2-NEXT:    jae .LBB370_3
+; X64-BMI2-NEXT:  # %bb.4: # %return
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB370_3: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rcx
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %0 = atomicrmw or ptr %v, i64 %shl monotonic, align 8
+  %add = add i64 %c, 1
+  %shl1 = shl nuw i64 1, %add
+  %and = and i64 %0, %shl1
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_small_mask_or_64_gpr_brz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_small_mask_or_64_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $31, %ecx
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    movl %ecx, %ebp
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB371_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB371_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    testl %edi, %eax
+; X86-NOBMI2-NEXT:    je .LBB371_4
+; X86-NOBMI2-NEXT:  # %bb.3:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jmp .LBB371_5
+; X86-NOBMI2-NEXT:  .LBB371_4: # %if.then
+; X86-NOBMI2-NEXT:    movl (%esi,%ebp,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi,%ebp,8), %edx
+; X86-NOBMI2-NEXT:  .LBB371_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_small_mask_or_64_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    andl $31, %edi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %edi, %eax, %ebp
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB371_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB371_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    testl %ebp, %eax
+; X86-BMI2-NEXT:    je .LBB371_4
+; X86-BMI2-NEXT:  # %bb.3:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jmp .LBB371_5
+; X86-BMI2-NEXT:  .LBB371_4: # %if.then
+; X86-BMI2-NEXT:    movl (%esi,%edi,8), %eax
+; X86-BMI2-NEXT:    movl 4(%esi,%edi,8), %edx
+; X86-BMI2-NEXT:  .LBB371_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_small_mask_or_64_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    andl $31, %esi
+; X64-NOBMI2-NEXT:    lock btsq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    jae .LBB371_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB371_1: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_small_mask_or_64_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $31, %esi
+; X64-BMI2-NEXT:    lock btsq %rsi, (%rdi)
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    jae .LBB371_1
+; X64-BMI2-NEXT:  # %bb.2: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB371_1: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 31
+  %shl = shl nuw nsw i64 1, %rem
+  %0 = atomicrmw or ptr %v, i64 %shl monotonic, align 8
+  %and = and i64 %0, %shl
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %rem
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_mask0_or_64_gpr_brz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_or_64_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %esi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB372_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %esi, %ebp
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:  .LBB372_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB372_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %esi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    orl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB372_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl $1, %ebx
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    shldl %cl, %ebx, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %ebx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB372_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    movl %ebx, %ebp
+; X86-NOBMI2-NEXT:    xorl %ebx, %ebx
+; X86-NOBMI2-NEXT:  .LBB372_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    andl %ebx, %eax
+; X86-NOBMI2-NEXT:    movl $123, %ecx
+; X86-NOBMI2-NEXT:    orl %edx, %eax
+; X86-NOBMI2-NEXT:    jne .LBB372_8
+; X86-NOBMI2-NEXT:  # %bb.7: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl (%edi,%eax,8), %ecx
+; X86-NOBMI2-NEXT:    movl 4(%edi,%eax,8), %esi
+; X86-NOBMI2-NEXT:  .LBB372_8: # %return
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    movl %esi, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_or_64_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %esi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB372_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %esi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB372_2: # %entry
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB372_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    orl %esi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB372_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl $1, %ebp
+; X86-BMI2-NEXT:    xorl %ebx, %ebx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    shldl %cl, %ebp, %ebx
+; X86-BMI2-NEXT:    shlxl %ecx, %ebp, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB372_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    movl %ebp, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB372_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    andl %ebx, %edx
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    movl $123, %ecx
+; X86-BMI2-NEXT:    orl %edx, %eax
+; X86-BMI2-NEXT:    jne .LBB372_8
+; X86-BMI2-NEXT:  # %bb.7: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl (%edi,%eax,8), %ecx
+; X86-BMI2-NEXT:    movl 4(%edi,%eax,8), %esi
+; X86-BMI2-NEXT:  .LBB372_8: # %return
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    movl %esi, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_or_64_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $63, %eax
+; X64-NOBMI2-NEXT:    lock btsq %rax, (%rdi)
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    jae .LBB372_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB372_1: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_or_64_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $63, %eax
+; X64-BMI2-NEXT:    lock btsq %rax, (%rdi)
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    jae .LBB372_1
+; X64-BMI2-NEXT:  # %bb.2: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB372_1: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 63
+  %shl = shl nuw i64 1, %rem
+  %0 = atomicrmw or ptr %v, i64 %shl monotonic, align 8
+  %shl1 = shl nuw i64 1, %c
+  %and = and i64 %0, %shl1
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_mask1_or_64_gpr_brz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_or_64_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %esi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB373_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %esi, %ebp
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:  .LBB373_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB373_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %esi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    orl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB373_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl $1, %ebx
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    shldl %cl, %ebx, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %ebx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB373_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    movl %ebx, %ebp
+; X86-NOBMI2-NEXT:    xorl %ebx, %ebx
+; X86-NOBMI2-NEXT:  .LBB373_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    andl %ebx, %eax
+; X86-NOBMI2-NEXT:    movl $123, %ecx
+; X86-NOBMI2-NEXT:    orl %edx, %eax
+; X86-NOBMI2-NEXT:    jne .LBB373_8
+; X86-NOBMI2-NEXT:  # %bb.7: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl (%edi,%eax,8), %ecx
+; X86-NOBMI2-NEXT:    movl 4(%edi,%eax,8), %esi
+; X86-NOBMI2-NEXT:  .LBB373_8: # %return
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    movl %esi, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_or_64_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %esi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB373_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %esi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB373_2: # %entry
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB373_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    orl %esi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB373_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl $1, %ebp
+; X86-BMI2-NEXT:    xorl %ebx, %ebx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    shldl %cl, %ebp, %ebx
+; X86-BMI2-NEXT:    shlxl %ecx, %ebp, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB373_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    movl %ebp, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB373_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    andl %ebx, %edx
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    movl $123, %ecx
+; X86-BMI2-NEXT:    orl %edx, %eax
+; X86-BMI2-NEXT:    jne .LBB373_8
+; X86-BMI2-NEXT:  # %bb.7: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl (%edi,%eax,8), %ecx
+; X86-BMI2-NEXT:    movl 4(%edi,%eax,8), %esi
+; X86-BMI2-NEXT:  .LBB373_8: # %return
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    movl %esi, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_or_64_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $63, %eax
+; X64-NOBMI2-NEXT:    lock btsq %rax, (%rdi)
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    jae .LBB373_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB373_1: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_or_64_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $63, %eax
+; X64-BMI2-NEXT:    lock btsq %rax, (%rdi)
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    jae .LBB373_1
+; X64-BMI2-NEXT:  # %bb.2: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB373_1: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %0 = atomicrmw or ptr %v, i64 %shl monotonic, align 8
+  %rem = and i64 %c, 63
+  %shl1 = shl nuw i64 1, %rem
+  %and = and i64 %0, %shl1
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_mask01_or_64_gpr_brz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_or_64_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB374_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB374_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB374_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    orl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB374_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edi, %eax
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    je .LBB374_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jmp .LBB374_7
+; X86-NOBMI2-NEXT:  .LBB374_6: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-NOBMI2-NEXT:  .LBB374_7: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_or_64_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB374_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB374_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB374_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    orl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB374_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    andl %edi, %edx
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    je .LBB374_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jmp .LBB374_7
+; X86-BMI2-NEXT:  .LBB374_6: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-BMI2-NEXT:  .LBB374_7: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_or_64_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $63, %eax
+; X64-NOBMI2-NEXT:    lock btsq %rax, (%rdi)
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    jae .LBB374_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB374_1: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_or_64_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $63, %eax
+; X64-BMI2-NEXT:    lock btsq %rax, (%rdi)
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    jae .LBB374_1
+; X64-BMI2-NEXT:  # %bb.2: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB374_1: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 63
+  %shl = shl nuw i64 1, %rem
+  %0 = atomicrmw or ptr %v, i64 %shl monotonic, align 8
+  %and = and i64 %0, %shl
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_blsi_or_64_gpr_brz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_blsi_or_64_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    movl %ecx, %esi
+; X86-NOBMI2-NEXT:    negl %esi
+; X86-NOBMI2-NEXT:    sbbl %eax, %ebp
+; X86-NOBMI2-NEXT:    andl %eax, %ebp
+; X86-NOBMI2-NEXT:    andl %ecx, %esi
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB375_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %esi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    orl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB375_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %esi, %eax
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    je .LBB375_4
+; X86-NOBMI2-NEXT:  # %bb.3:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jmp .LBB375_5
+; X86-NOBMI2-NEXT:  .LBB375_4: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi,%ecx,8), %edx
+; X86-NOBMI2-NEXT:  .LBB375_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_blsi_or_64_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:    movl %ecx, %esi
+; X86-BMI2-NEXT:    negl %esi
+; X86-BMI2-NEXT:    sbbl %eax, %ebp
+; X86-BMI2-NEXT:    andl %eax, %ebp
+; X86-BMI2-NEXT:    andl %ecx, %esi
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB375_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %esi, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    orl %ebp, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB375_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %esi, %eax
+; X86-BMI2-NEXT:    andl %ebp, %edx
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    je .LBB375_4
+; X86-BMI2-NEXT:  # %bb.3:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jmp .LBB375_5
+; X86-BMI2-NEXT:  .LBB375_4: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%edi,%ecx,8), %edx
+; X86-BMI2-NEXT:  .LBB375_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_or_64_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    blsiq %rsi, %rdx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB375_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rcx
+; X64-BMI2-NEXT:    orq %rdx, %rcx
+; X64-BMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB375_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movl $123, %ecx
+; X64-BMI2-NEXT:    testq %rdx, %rax
+; X64-BMI2-NEXT:    je .LBB375_3
+; X64-BMI2-NEXT:  # %bb.4: # %return
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB375_3: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rcx
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %sub = sub i64 0, %c
+  %and = and i64 %sub, %c
+  %0 = atomicrmw or ptr %v, i64 %and monotonic, align 8
+  %and3 = and i64 %0, %and
+  %tobool.not = icmp eq i64 %and3, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_or_64_gpr_brnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_or_64_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB376_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB376_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB376_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    orl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB376_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edi, %eax
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    je .LBB376_5
+; X86-NOBMI2-NEXT:  # %bb.6: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-NOBMI2-NEXT:    jmp .LBB376_7
+; X86-NOBMI2-NEXT:  .LBB376_5:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB376_7: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_or_64_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB376_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB376_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB376_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    orl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB376_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    andl %edi, %edx
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    je .LBB376_5
+; X86-BMI2-NEXT:  # %bb.6: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-BMI2-NEXT:    jmp .LBB376_7
+; X86-BMI2-NEXT:  .LBB376_5:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB376_7: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_or_64_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $63, %eax
+; X64-NOBMI2-NEXT:    lock btsq %rax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB376_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB376_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_or_64_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $63, %eax
+; X64-BMI2-NEXT:    lock btsq %rax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB376_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB376_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %0 = atomicrmw or ptr %v, i64 %shl monotonic, align 8
+  %and = and i64 %0, %shl
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl2_or_64_gpr_brnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl2_or_64_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $2, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB377_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB377_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB377_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    orl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB377_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edi, %eax
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    je .LBB377_5
+; X86-NOBMI2-NEXT:  # %bb.6: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-NOBMI2-NEXT:    jmp .LBB377_7
+; X86-NOBMI2-NEXT:  .LBB377_5:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB377_7: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl2_or_64_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $2, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB377_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB377_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB377_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    orl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB377_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    andl %edi, %edx
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    je .LBB377_5
+; X86-BMI2-NEXT:  # %bb.6: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-BMI2-NEXT:    jmp .LBB377_7
+; X86-BMI2-NEXT:  .LBB377_5:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB377_7: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl2_or_64_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl $2, %edx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB377_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    orq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB377_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    testq %rdx, %rax
+; X64-NOBMI2-NEXT:    je .LBB377_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rcx,8), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB377_3:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl2_or_64_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $2, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB377_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    orq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB377_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    testq %rcx, %rax
+; X64-BMI2-NEXT:    je .LBB377_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB377_3:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl i64 2, %c
+  %0 = atomicrmw or ptr %v, i64 %shl monotonic, align 8
+  %and = and i64 %0, %shl
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_neq_or_64_gpr_brnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_or_64_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %esi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB378_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %esi, %ebp
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:  .LBB378_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB378_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %esi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    orl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB378_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    incb %cl
+; X86-NOBMI2-NEXT:    movl $1, %ebx
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %ebx, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %ebx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB378_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    movl %ebx, %ebp
+; X86-NOBMI2-NEXT:    xorl %ebx, %ebx
+; X86-NOBMI2-NEXT:  .LBB378_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    andl %ebx, %eax
+; X86-NOBMI2-NEXT:    orl %edx, %eax
+; X86-NOBMI2-NEXT:    je .LBB378_7
+; X86-NOBMI2-NEXT:  # %bb.8: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi,%ecx,8), %esi
+; X86-NOBMI2-NEXT:    jmp .LBB378_9
+; X86-NOBMI2-NEXT:  .LBB378_7:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB378_9: # %return
+; X86-NOBMI2-NEXT:    movl %esi, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_or_64_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %esi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB378_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %esi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB378_2: # %entry
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB378_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    orl %esi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB378_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    # kill: def $cl killed $cl killed $ecx def $ecx
+; X86-BMI2-NEXT:    incb %cl
+; X86-BMI2-NEXT:    movl $1, %ebp
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    xorl %ebx, %ebx
+; X86-BMI2-NEXT:    shldl %cl, %ebp, %ebx
+; X86-BMI2-NEXT:    shlxl %ecx, %ebp, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB378_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    movl %ebp, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB378_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebx, %edx
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    orl %edx, %eax
+; X86-BMI2-NEXT:    je .LBB378_7
+; X86-BMI2-NEXT:  # %bb.8: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%edi,%ecx,8), %esi
+; X86-BMI2-NEXT:    jmp .LBB378_9
+; X86-BMI2-NEXT:  .LBB378_7:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB378_9: # %return
+; X86-BMI2-NEXT:    movl %esi, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_or_64_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB378_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    orq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB378_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    leal 1(%rcx), %edx
+; X64-NOBMI2-NEXT:    movzbl %dl, %edx
+; X64-NOBMI2-NEXT:    btq %rdx, %rax
+; X64-NOBMI2-NEXT:    jae .LBB378_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rcx,8), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB378_3:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_or_64_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $1, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB378_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    orq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB378_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    leal 1(%rsi), %ecx
+; X64-BMI2-NEXT:    movzbl %cl, %ecx
+; X64-BMI2-NEXT:    btq %rcx, %rax
+; X64-BMI2-NEXT:    jae .LBB378_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB378_3:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %0 = atomicrmw or ptr %v, i64 %shl monotonic, align 8
+  %add = add i64 %c, 1
+  %shl1 = shl nuw i64 1, %add
+  %and = and i64 %0, %shl1
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_small_mask_or_64_gpr_brnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_small_mask_or_64_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $31, %ecx
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    movl %ecx, %ebp
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB379_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB379_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    testl %edi, %eax
+; X86-NOBMI2-NEXT:    je .LBB379_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movl (%esi,%ebp,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi,%ebp,8), %edx
+; X86-NOBMI2-NEXT:    jmp .LBB379_5
+; X86-NOBMI2-NEXT:  .LBB379_3:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB379_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_small_mask_or_64_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    andl $31, %edi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %edi, %eax, %ebp
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB379_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB379_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    testl %ebp, %eax
+; X86-BMI2-NEXT:    je .LBB379_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movl (%esi,%edi,8), %eax
+; X86-BMI2-NEXT:    movl 4(%esi,%edi,8), %edx
+; X86-BMI2-NEXT:    jmp .LBB379_5
+; X86-BMI2-NEXT:  .LBB379_3:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB379_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_small_mask_or_64_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    andl $31, %esi
+; X64-NOBMI2-NEXT:    lock btsq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB379_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB379_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_small_mask_or_64_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $31, %esi
+; X64-BMI2-NEXT:    lock btsq %rsi, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB379_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB379_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 31
+  %shl = shl nuw nsw i64 1, %rem
+  %0 = atomicrmw or ptr %v, i64 %shl monotonic, align 8
+  %and = and i64 %0, %shl
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %rem
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_mask0_or_64_gpr_brnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_or_64_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %esi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB380_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %esi, %ebp
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:  .LBB380_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB380_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %esi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    orl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB380_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl $1, %ebx
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    shldl %cl, %ebx, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %ebx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB380_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    movl %ebx, %ebp
+; X86-NOBMI2-NEXT:    xorl %ebx, %ebx
+; X86-NOBMI2-NEXT:  .LBB380_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    andl %ebx, %eax
+; X86-NOBMI2-NEXT:    orl %edx, %eax
+; X86-NOBMI2-NEXT:    je .LBB380_7
+; X86-NOBMI2-NEXT:  # %bb.8: # %if.then
+; X86-NOBMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi,%ecx,8), %esi
+; X86-NOBMI2-NEXT:    jmp .LBB380_9
+; X86-NOBMI2-NEXT:  .LBB380_7:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB380_9: # %return
+; X86-NOBMI2-NEXT:    movl %esi, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_or_64_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %esi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB380_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %esi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB380_2: # %entry
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB380_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    orl %esi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB380_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl $1, %ebp
+; X86-BMI2-NEXT:    xorl %ebx, %ebx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    shldl %cl, %ebp, %ebx
+; X86-BMI2-NEXT:    shlxl %ecx, %ebp, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB380_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    movl %ebp, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB380_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebx, %edx
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    orl %edx, %eax
+; X86-BMI2-NEXT:    je .LBB380_7
+; X86-BMI2-NEXT:  # %bb.8: # %if.then
+; X86-BMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%edi,%ecx,8), %edx
+; X86-BMI2-NEXT:    jmp .LBB380_9
+; X86-BMI2-NEXT:  .LBB380_7:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:  .LBB380_9: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_or_64_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $63, %eax
+; X64-NOBMI2-NEXT:    lock btsq %rax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB380_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB380_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_or_64_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $63, %eax
+; X64-BMI2-NEXT:    lock btsq %rax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB380_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB380_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 63
+  %shl = shl nuw i64 1, %rem
+  %0 = atomicrmw or ptr %v, i64 %shl monotonic, align 8
+  %shl1 = shl nuw i64 1, %c
+  %and = and i64 %0, %shl1
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_mask1_or_64_gpr_brnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_or_64_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %esi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB381_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %esi, %ebp
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:  .LBB381_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB381_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %esi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    orl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB381_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl $1, %ebx
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    shldl %cl, %ebx, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %ebx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB381_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    movl %ebx, %ebp
+; X86-NOBMI2-NEXT:    xorl %ebx, %ebx
+; X86-NOBMI2-NEXT:  .LBB381_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    andl %ebx, %eax
+; X86-NOBMI2-NEXT:    orl %edx, %eax
+; X86-NOBMI2-NEXT:    je .LBB381_7
+; X86-NOBMI2-NEXT:  # %bb.8: # %if.then
+; X86-NOBMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi,%ecx,8), %esi
+; X86-NOBMI2-NEXT:    jmp .LBB381_9
+; X86-NOBMI2-NEXT:  .LBB381_7:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB381_9: # %return
+; X86-NOBMI2-NEXT:    movl %esi, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_or_64_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %esi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB381_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %esi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB381_2: # %entry
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB381_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    orl %esi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB381_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl $1, %ebp
+; X86-BMI2-NEXT:    xorl %ebx, %ebx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    shldl %cl, %ebp, %ebx
+; X86-BMI2-NEXT:    shlxl %ecx, %ebp, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB381_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    movl %ebp, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB381_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebx, %edx
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    orl %edx, %eax
+; X86-BMI2-NEXT:    je .LBB381_7
+; X86-BMI2-NEXT:  # %bb.8: # %if.then
+; X86-BMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%edi,%ecx,8), %edx
+; X86-BMI2-NEXT:    jmp .LBB381_9
+; X86-BMI2-NEXT:  .LBB381_7:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:  .LBB381_9: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_or_64_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $63, %eax
+; X64-NOBMI2-NEXT:    lock btsq %rax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB381_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB381_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_or_64_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $63, %eax
+; X64-BMI2-NEXT:    lock btsq %rax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB381_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB381_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %0 = atomicrmw or ptr %v, i64 %shl monotonic, align 8
+  %rem = and i64 %c, 63
+  %shl1 = shl nuw i64 1, %rem
+  %and = and i64 %0, %shl1
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_mask01_or_64_gpr_brnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_or_64_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB382_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB382_2: # %entry
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB382_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    orl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB382_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edi, %eax
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    je .LBB382_5
+; X86-NOBMI2-NEXT:  # %bb.6: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-NOBMI2-NEXT:    jmp .LBB382_7
+; X86-NOBMI2-NEXT:  .LBB382_5:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB382_7: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_or_64_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB382_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB382_2: # %entry
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB382_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    orl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB382_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    andl %edi, %edx
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    je .LBB382_5
+; X86-BMI2-NEXT:  # %bb.6: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-BMI2-NEXT:    jmp .LBB382_7
+; X86-BMI2-NEXT:  .LBB382_5:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB382_7: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_or_64_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $63, %eax
+; X64-NOBMI2-NEXT:    lock btsq %rax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB382_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB382_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_or_64_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $63, %eax
+; X64-BMI2-NEXT:    lock btsq %rax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB382_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB382_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 63
+  %shl = shl nuw i64 1, %rem
+  %0 = atomicrmw or ptr %v, i64 %shl monotonic, align 8
+  %and = and i64 %0, %shl
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_blsi_or_64_gpr_brnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_blsi_or_64_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    movl %ecx, %esi
+; X86-NOBMI2-NEXT:    negl %esi
+; X86-NOBMI2-NEXT:    sbbl %eax, %ebp
+; X86-NOBMI2-NEXT:    andl %eax, %ebp
+; X86-NOBMI2-NEXT:    andl %ecx, %esi
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB383_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl %esi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    orl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB383_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %esi, %eax
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    je .LBB383_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi,%ecx,8), %edx
+; X86-NOBMI2-NEXT:    jmp .LBB383_5
+; X86-NOBMI2-NEXT:  .LBB383_3:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB383_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_blsi_or_64_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:    movl %ecx, %esi
+; X86-BMI2-NEXT:    negl %esi
+; X86-BMI2-NEXT:    sbbl %eax, %ebp
+; X86-BMI2-NEXT:    andl %eax, %ebp
+; X86-BMI2-NEXT:    andl %ecx, %esi
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB383_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl %esi, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    orl %ebp, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB383_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %esi, %eax
+; X86-BMI2-NEXT:    andl %ebp, %edx
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    je .LBB383_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%edi,%ecx,8), %edx
+; X86-BMI2-NEXT:    jmp .LBB383_5
+; X86-BMI2-NEXT:  .LBB383_3:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB383_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_or_64_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    blsiq %rsi, %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB383_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rdx
+; X64-BMI2-NEXT:    orq %rcx, %rdx
+; X64-BMI2-NEXT:    lock cmpxchgq %rdx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB383_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    testq %rcx, %rax
+; X64-BMI2-NEXT:    je .LBB383_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB383_3:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %sub = sub i64 0, %c
+  %and = and i64 %sub, %c
+  %0 = atomicrmw or ptr %v, i64 %and monotonic, align 8
+  %and3 = and i64 %0, %and
+  %tobool.not = icmp eq i64 %and3, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_and_64_gpr_val(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_and_64_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    subl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB384_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB384_2: # %entry
+; X86-NOBMI2-NEXT:    movl %ebp, (%esp) # 4-byte Spill
+; X86-NOBMI2-NEXT:    notl %ebp
+; X86-NOBMI2-NEXT:    movl %edi, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-NOBMI2-NEXT:    notl %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB384_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB384_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl {{[-0-9]+}}(%e{{[sb]}}p), %eax # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    andl (%esp), %edx # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    addl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_and_64_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    subl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB384_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB384_2: # %entry
+; X86-BMI2-NEXT:    movl %edi, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-BMI2-NEXT:    notl %edi
+; X86-BMI2-NEXT:    movl %ebp, (%esp) # 4-byte Spill
+; X86-BMI2-NEXT:    notl %ebp
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB384_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB384_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl (%esp), %eax # 4-byte Folded Reload
+; X86-BMI2-NEXT:    andl {{[-0-9]+}}(%e{{[sb]}}p), %edx # 4-byte Folded Reload
+; X86-BMI2-NEXT:    addl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_and_64_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    andl $63, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btrq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $rcx
+; X64-NOBMI2-NEXT:    shlq %cl, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_and_64_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $63, %esi
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btrq %rsi, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %not = xor i64 %shl, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %and = and i64 %0, %shl
+  ret i64 %and
+}
+
+define i64 @atomic_shl2_and_64_gpr_val(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl2_and_64_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    subl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl $2, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB385_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB385_2: # %entry
+; X86-NOBMI2-NEXT:    movl %ebp, (%esp) # 4-byte Spill
+; X86-NOBMI2-NEXT:    notl %ebp
+; X86-NOBMI2-NEXT:    movl %edi, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-NOBMI2-NEXT:    notl %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB385_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB385_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl {{[-0-9]+}}(%e{{[sb]}}p), %eax # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    andl (%esp), %edx # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    addl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl2_and_64_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    subl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl $2, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB385_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB385_2: # %entry
+; X86-BMI2-NEXT:    movl %edi, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-BMI2-NEXT:    notl %edi
+; X86-BMI2-NEXT:    movl %ebp, (%esp) # 4-byte Spill
+; X86-BMI2-NEXT:    notl %ebp
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB385_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB385_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl (%esp), %eax # 4-byte Folded Reload
+; X86-BMI2-NEXT:    andl {{[-0-9]+}}(%e{{[sb]}}p), %edx # 4-byte Folded Reload
+; X86-BMI2-NEXT:    addl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl2_and_64_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl $2, %edx
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $rcx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq %rdx, %rcx
+; X64-NOBMI2-NEXT:    notq %rcx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB385_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    andq %rcx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB385_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    andq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl2_and_64_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $2, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rcx
+; X64-BMI2-NEXT:    movq %rcx, %rdx
+; X64-BMI2-NEXT:    notq %rdx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB385_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rsi
+; X64-BMI2-NEXT:    andq %rdx, %rsi
+; X64-BMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB385_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    andq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl i64 2, %c
+  %not = xor i64 %shl, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %and = and i64 %0, %shl
+  ret i64 %and
+}
+
+define i64 @atomic_shl1_neq_and_64_gpr_val(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_and_64_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB386_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB386_2: # %entry
+; X86-NOBMI2-NEXT:    notl %ebp
+; X86-NOBMI2-NEXT:    notl %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB386_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB386_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    incb %cl
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:    shldl %cl, %esi, %edi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB386_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    movl %esi, %edi
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:  .LBB386_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edi, %edx
+; X86-NOBMI2-NEXT:    andl %esi, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_and_64_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB386_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB386_2: # %entry
+; X86-BMI2-NEXT:    notl %edi
+; X86-BMI2-NEXT:    notl %ebp
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB386_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB386_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    incb %cl
+; X86-BMI2-NEXT:    movl $1, %edi
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    shldl %cl, %edi, %esi
+; X86-BMI2-NEXT:    shlxl %ecx, %edi, %edi
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB386_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    movl %edi, %esi
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:  .LBB386_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %esi, %edx
+; X86-BMI2-NEXT:    andl %edi, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_and_64_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movq $-2, %rdx
+; X64-NOBMI2-NEXT:    rolq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB386_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    andq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB386_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    incb %cl
+; X64-NOBMI2-NEXT:    movl $1, %edx
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $rcx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    andq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_and_64_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movq %rsi, %rcx
+; X64-BMI2-NEXT:    movq $-2, %rdx
+; X64-BMI2-NEXT:    rolq %cl, %rdx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB386_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rsi
+; X64-BMI2-NEXT:    andq %rdx, %rsi
+; X64-BMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB386_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    incb %cl
+; X64-BMI2-NEXT:    movl $1, %edx
+; X64-BMI2-NEXT:    shlxq %rcx, %rdx, %rcx
+; X64-BMI2-NEXT:    andq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %not = xor i64 %shl, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %add = add i64 %c, 1
+  %shl1 = shl nuw i64 1, %add
+  %and = and i64 %0, %shl1
+  ret i64 %and
+}
+
+define i64 @atomic_shl1_small_mask_and_64_gpr_val(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_small_mask_and_64_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    pushl %eax
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 24
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl $1, %eax
+; X86-NOBMI2-NEXT:    shll %cl, %eax
+; X86-NOBMI2-NEXT:    movl %eax, (%esp) # 4-byte Spill
+; X86-NOBMI2-NEXT:    movl $-2, %ebp
+; X86-NOBMI2-NEXT:    roll %cl, %ebp
+; X86-NOBMI2-NEXT:    movl $-1, %esi
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB387_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %ebp, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %esi, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB387_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl (%esp), %eax # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    addl $4, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_small_mask_and_64_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    pushl %eax
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 24
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %eax
+; X86-BMI2-NEXT:    movl %eax, (%esp) # 4-byte Spill
+; X86-BMI2-NEXT:    movl $-2, %ebp
+; X86-BMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-BMI2-NEXT:    roll %cl, %ebp
+; X86-BMI2-NEXT:    movl $-1, %edi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB387_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB387_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl (%esp), %eax # 4-byte Folded Reload
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    addl $4, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_small_mask_and_64_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    andl $31, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btrq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $rcx
+; X64-NOBMI2-NEXT:    shlq %cl, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_small_mask_and_64_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $31, %esi
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btrq %rsi, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 31
+  %shl = shl nuw nsw i64 1, %rem
+  %not = xor i64 %shl, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %and = and i64 %0, %shl
+  ret i64 %and
+}
+
+define i64 @atomic_shl1_mask0_and_64_gpr_val(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_and_64_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB388_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB388_2: # %entry
+; X86-NOBMI2-NEXT:    notl %ebp
+; X86-NOBMI2-NEXT:    notl %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB388_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB388_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    shldl %cl, %esi, %edi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB388_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    movl %esi, %edi
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:  .LBB388_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edi, %edx
+; X86-NOBMI2-NEXT:    andl %esi, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_and_64_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB388_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB388_2: # %entry
+; X86-BMI2-NEXT:    notl %edi
+; X86-BMI2-NEXT:    notl %ebp
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB388_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB388_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl $1, %edi
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    shldl %cl, %edi, %esi
+; X86-BMI2-NEXT:    shlxl %ecx, %edi, %edi
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB388_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    movl %edi, %esi
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:  .LBB388_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %esi, %edx
+; X86-BMI2-NEXT:    andl %edi, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_and_64_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    andl $63, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btrq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $rcx
+; X64-NOBMI2-NEXT:    shlq %cl, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_and_64_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $63, %esi
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btrq %rsi, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 63
+  %shl = shl nuw i64 1, %rem
+  %not = xor i64 %shl, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %shl1 = shl nuw i64 1, %c
+  %and = and i64 %0, %shl1
+  ret i64 %and
+}
+
+define i64 @atomic_shl1_mask1_and_64_gpr_val(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_and_64_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB389_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB389_2: # %entry
+; X86-NOBMI2-NEXT:    notl %ebp
+; X86-NOBMI2-NEXT:    notl %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB389_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB389_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    shldl %cl, %esi, %edi
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB389_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    movl %esi, %edi
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:  .LBB389_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %edi, %edx
+; X86-NOBMI2-NEXT:    andl %esi, %eax
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_and_64_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB389_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB389_2: # %entry
+; X86-BMI2-NEXT:    notl %edi
+; X86-BMI2-NEXT:    notl %ebp
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB389_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB389_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl $1, %edi
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    shldl %cl, %edi, %esi
+; X86-BMI2-NEXT:    shlxl %ecx, %edi, %edi
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB389_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    movl %edi, %esi
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:  .LBB389_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %esi, %edx
+; X86-BMI2-NEXT:    andl %edi, %eax
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_and_64_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    andl $63, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btrq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $rcx
+; X64-NOBMI2-NEXT:    shlq %cl, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_and_64_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $63, %esi
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btrq %rsi, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %not = xor i64 %shl, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %rem = and i64 %c, 63
+  %shl1 = shl nuw i64 1, %rem
+  %and = and i64 %0, %shl1
+  ret i64 %and
+}
+
+define i64 @atomic_shl1_mask01_and_64_gpr_val(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_and_64_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    subl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB390_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB390_2: # %entry
+; X86-NOBMI2-NEXT:    movl %ebp, (%esp) # 4-byte Spill
+; X86-NOBMI2-NEXT:    notl %ebp
+; X86-NOBMI2-NEXT:    movl %edi, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-NOBMI2-NEXT:    notl %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB390_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB390_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl {{[-0-9]+}}(%e{{[sb]}}p), %eax # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    andl (%esp), %edx # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    addl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_and_64_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    subl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB390_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB390_2: # %entry
+; X86-BMI2-NEXT:    movl %edi, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-BMI2-NEXT:    notl %edi
+; X86-BMI2-NEXT:    movl %ebp, (%esp) # 4-byte Spill
+; X86-BMI2-NEXT:    notl %ebp
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB390_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB390_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl (%esp), %eax # 4-byte Folded Reload
+; X86-BMI2-NEXT:    andl {{[-0-9]+}}(%e{{[sb]}}p), %edx # 4-byte Folded Reload
+; X86-BMI2-NEXT:    addl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_and_64_gpr_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    andl $63, %ecx
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btrq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $rcx
+; X64-NOBMI2-NEXT:    shlq %cl, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_and_64_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $63, %esi
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btrq %rsi, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 63
+  %shl = shl nuw i64 1, %rem
+  %not = xor i64 %shl, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %and = and i64 %0, %shl
+  ret i64 %and
+}
+
+define i64 @atomic_blsi_and_64_gpr_val(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_blsi_and_64_gpr_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    subl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:    movl %eax, %ebp
+; X86-NOBMI2-NEXT:    negl %ebp
+; X86-NOBMI2-NEXT:    sbbl %ecx, %esi
+; X86-NOBMI2-NEXT:    andl %ecx, %esi
+; X86-NOBMI2-NEXT:    andl %eax, %ebp
+; X86-NOBMI2-NEXT:    movl %esi, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-NOBMI2-NEXT:    notl %esi
+; X86-NOBMI2-NEXT:    movl %ebp, (%esp) # 4-byte Spill
+; X86-NOBMI2-NEXT:    notl %ebp
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB391_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %ebp, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %esi, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB391_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl (%esp), %eax # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    andl {{[-0-9]+}}(%e{{[sb]}}p), %edx # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    addl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_blsi_and_64_gpr_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    subl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    movl %eax, %ebp
+; X86-BMI2-NEXT:    negl %ebp
+; X86-BMI2-NEXT:    sbbl %ecx, %esi
+; X86-BMI2-NEXT:    andl %ecx, %esi
+; X86-BMI2-NEXT:    andl %eax, %ebp
+; X86-BMI2-NEXT:    movl %esi, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-BMI2-NEXT:    notl %esi
+; X86-BMI2-NEXT:    movl %ebp, (%esp) # 4-byte Spill
+; X86-BMI2-NEXT:    notl %ebp
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB391_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %esi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB391_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl (%esp), %eax # 4-byte Folded Reload
+; X86-BMI2-NEXT:    andl {{[-0-9]+}}(%e{{[sb]}}p), %edx # 4-byte Folded Reload
+; X86-BMI2-NEXT:    addl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_and_64_gpr_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    blsiq %rsi, %rcx
+; X64-BMI2-NEXT:    movq %rcx, %rdx
+; X64-BMI2-NEXT:    notq %rdx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB391_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rsi
+; X64-BMI2-NEXT:    andq %rdx, %rsi
+; X64-BMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB391_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    andq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %sub = sub i64 0, %c
+  %and = and i64 %sub, %c
+  %not = xor i64 %and, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %and3 = and i64 %0, %and
+  ret i64 %and3
+}
+
+define i64 @atomic_shl1_and_64_gpr_valz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_and_64_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB392_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB392_2: # %entry
+; X86-NOBMI2-NEXT:    notl %ebp
+; X86-NOBMI2-NEXT:    notl %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB392_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB392_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    notl %eax
+; X86-NOBMI2-NEXT:    notl %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-NOBMI2-NEXT:    shrl %cl, %edx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    jne .LBB392_6
+; X86-NOBMI2-NEXT:  # %bb.5: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:  .LBB392_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl $1, %edx
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_and_64_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB392_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB392_2: # %entry
+; X86-BMI2-NEXT:    notl %edi
+; X86-BMI2-NEXT:    notl %ebp
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB392_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB392_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    notl %eax
+; X86-BMI2-NEXT:    notl %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB392_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    shrxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:  .LBB392_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_and_64_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movq $-2, %rdx
+; X64-NOBMI2-NEXT:    rolq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB392_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    andq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB392_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btq %rcx, %rax
+; X64-NOBMI2-NEXT:    setae %dl
+; X64-NOBMI2-NEXT:    movq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_and_64_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movq %rsi, %rcx
+; X64-BMI2-NEXT:    movq $-2, %rdx
+; X64-BMI2-NEXT:    rolq %cl, %rdx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB392_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rsi
+; X64-BMI2-NEXT:    andq %rdx, %rsi
+; X64-BMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB392_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %edx, %edx
+; X64-BMI2-NEXT:    btq %rcx, %rax
+; X64-BMI2-NEXT:    setae %dl
+; X64-BMI2-NEXT:    movq %rdx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %not = xor i64 %shl, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %1 = xor i64 %0, -1
+  %2 = lshr i64 %1, %c
+  %conv = and i64 %2, 1
+  ret i64 %conv
+}
+
+define i64 @atomic_shl2_and_64_gpr_valz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl2_and_64_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    subl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl $2, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB393_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB393_2: # %entry
+; X86-NOBMI2-NEXT:    movl %ebp, (%esp) # 4-byte Spill
+; X86-NOBMI2-NEXT:    notl %ebp
+; X86-NOBMI2-NEXT:    movl %edi, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-NOBMI2-NEXT:    notl %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB393_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB393_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl {{[-0-9]+}}(%e{{[sb]}}p), %eax # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    andl (%esp), %edx # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    sete %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    addl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl2_and_64_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    subl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl $2, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB393_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB393_2: # %entry
+; X86-BMI2-NEXT:    movl %edi, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-BMI2-NEXT:    notl %edi
+; X86-BMI2-NEXT:    movl %ebp, (%esp) # 4-byte Spill
+; X86-BMI2-NEXT:    notl %ebp
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB393_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB393_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl (%esp), %eax # 4-byte Folded Reload
+; X86-BMI2-NEXT:    andl {{[-0-9]+}}(%e{{[sb]}}p), %edx # 4-byte Folded Reload
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    sete %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    addl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl2_and_64_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl $2, %edx
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $rcx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq %rdx, %rcx
+; X64-NOBMI2-NEXT:    notq %rcx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB393_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    andq %rcx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB393_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    testq %rdx, %rax
+; X64-NOBMI2-NEXT:    sete %cl
+; X64-NOBMI2-NEXT:    movq %rcx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl2_and_64_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $2, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rdx
+; X64-BMI2-NEXT:    movq %rdx, %rcx
+; X64-BMI2-NEXT:    notq %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB393_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rsi
+; X64-BMI2-NEXT:    andq %rcx, %rsi
+; X64-BMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB393_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    testq %rdx, %rax
+; X64-BMI2-NEXT:    sete %cl
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl i64 2, %c
+  %not = xor i64 %shl, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %and = and i64 %0, %shl
+  %tobool.not = icmp eq i64 %and, 0
+  %conv = zext i1 %tobool.not to i64
+  ret i64 %conv
+}
+
+define i64 @atomic_shl1_neq_and_64_gpr_valz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_and_64_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB394_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB394_2: # %entry
+; X86-NOBMI2-NEXT:    notl %ebp
+; X86-NOBMI2-NEXT:    notl %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB394_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB394_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    notl %eax
+; X86-NOBMI2-NEXT:    notl %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    incb %cl
+; X86-NOBMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-NOBMI2-NEXT:    shrl %cl, %edx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    jne .LBB394_6
+; X86-NOBMI2-NEXT:  # %bb.5: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:  .LBB394_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl $1, %edx
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_and_64_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB394_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB394_2: # %entry
+; X86-BMI2-NEXT:    notl %edi
+; X86-BMI2-NEXT:    notl %ebp
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB394_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB394_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    notl %eax
+; X86-BMI2-NEXT:    notl %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    incb %cl
+; X86-BMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB394_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    shrxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:  .LBB394_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_and_64_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movq $-2, %rdx
+; X64-NOBMI2-NEXT:    rolq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB394_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    andq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB394_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    incb %cl
+; X64-NOBMI2-NEXT:    movzbl %cl, %edx
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    btq %rdx, %rax
+; X64-NOBMI2-NEXT:    setae %cl
+; X64-NOBMI2-NEXT:    movq %rcx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_and_64_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movq %rsi, %rcx
+; X64-BMI2-NEXT:    movq $-2, %rdx
+; X64-BMI2-NEXT:    rolq %cl, %rdx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB394_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rsi
+; X64-BMI2-NEXT:    andq %rdx, %rsi
+; X64-BMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB394_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    incb %cl
+; X64-BMI2-NEXT:    movzbl %cl, %edx
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    btq %rdx, %rax
+; X64-BMI2-NEXT:    setae %cl
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %not = xor i64 %shl, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %add = add i64 %c, 1
+  %1 = xor i64 %0, -1
+  %2 = lshr i64 %1, %add
+  %conv = and i64 %2, 1
+  ret i64 %conv
+}
+
+define i64 @atomic_shl1_small_mask_and_64_gpr_valz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_small_mask_and_64_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    pushl %eax
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 24
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    andl $31, %eax
+; X86-NOBMI2-NEXT:    movl %eax, (%esp) # 4-byte Spill
+; X86-NOBMI2-NEXT:    movl $-2, %ebp
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    roll %cl, %ebp
+; X86-NOBMI2-NEXT:    movl $-1, %esi
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB395_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %ebp, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %esi, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB395_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    movl (%esp), %edx # 4-byte Reload
+; X86-NOBMI2-NEXT:    btl %edx, %eax
+; X86-NOBMI2-NEXT:    setae %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    addl $4, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_small_mask_and_64_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    pushl %eax
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 24
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    andl $31, %eax
+; X86-BMI2-NEXT:    movl %eax, (%esp) # 4-byte Spill
+; X86-BMI2-NEXT:    movl $-2, %ebp
+; X86-BMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-BMI2-NEXT:    roll %cl, %ebp
+; X86-BMI2-NEXT:    movl $-1, %esi
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB395_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %esi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB395_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    movl (%esp), %edx # 4-byte Reload
+; X86-BMI2-NEXT:    btl %edx, %eax
+; X86-BMI2-NEXT:    setae %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    addl $4, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_small_mask_and_64_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    andl $31, %ecx
+; X64-NOBMI2-NEXT:    movq $-2, %rdx
+; X64-NOBMI2-NEXT:    rolq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB395_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    andq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB395_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btl %ecx, %eax
+; X64-NOBMI2-NEXT:    setae %dl
+; X64-NOBMI2-NEXT:    movq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_small_mask_and_64_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movq %rsi, %rcx
+; X64-BMI2-NEXT:    andl $31, %ecx
+; X64-BMI2-NEXT:    movq $-2, %rdx
+; X64-BMI2-NEXT:    rolq %cl, %rdx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB395_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rsi
+; X64-BMI2-NEXT:    andq %rdx, %rsi
+; X64-BMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB395_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %edx, %edx
+; X64-BMI2-NEXT:    btl %ecx, %eax
+; X64-BMI2-NEXT:    setae %dl
+; X64-BMI2-NEXT:    movq %rdx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 31
+  %shl = shl nuw nsw i64 1, %rem
+  %not = xor i64 %shl, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %1 = xor i64 %0, -1
+  %2 = lshr i64 %1, %rem
+  %conv = and i64 %2, 1
+  ret i64 %conv
+}
+
+define i64 @atomic_shl1_mask0_and_64_gpr_valz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_and_64_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB396_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB396_2: # %entry
+; X86-NOBMI2-NEXT:    notl %ebp
+; X86-NOBMI2-NEXT:    notl %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB396_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB396_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    notl %eax
+; X86-NOBMI2-NEXT:    notl %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-NOBMI2-NEXT:    shrl %cl, %edx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    jne .LBB396_6
+; X86-NOBMI2-NEXT:  # %bb.5: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:  .LBB396_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl $1, %edx
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_and_64_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB396_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB396_2: # %entry
+; X86-BMI2-NEXT:    notl %edi
+; X86-BMI2-NEXT:    notl %ebp
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB396_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB396_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    notl %eax
+; X86-BMI2-NEXT:    notl %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB396_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    shrxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:  .LBB396_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_and_64_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movq $-2, %rdx
+; X64-NOBMI2-NEXT:    rolq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB396_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    andq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB396_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btq %rcx, %rax
+; X64-NOBMI2-NEXT:    setae %dl
+; X64-NOBMI2-NEXT:    movq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_and_64_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movq %rsi, %rcx
+; X64-BMI2-NEXT:    movq $-2, %rdx
+; X64-BMI2-NEXT:    rolq %cl, %rdx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB396_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rsi
+; X64-BMI2-NEXT:    andq %rdx, %rsi
+; X64-BMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB396_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %edx, %edx
+; X64-BMI2-NEXT:    btq %rcx, %rax
+; X64-BMI2-NEXT:    setae %dl
+; X64-BMI2-NEXT:    movq %rdx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 63
+  %shl = shl nuw i64 1, %rem
+  %not = xor i64 %shl, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %1 = xor i64 %0, -1
+  %2 = lshr i64 %1, %c
+  %conv = and i64 %2, 1
+  ret i64 %conv
+}
+
+define i64 @atomic_shl1_mask1_and_64_gpr_valz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_and_64_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB397_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB397_2: # %entry
+; X86-NOBMI2-NEXT:    notl %ebp
+; X86-NOBMI2-NEXT:    notl %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB397_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB397_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    notl %eax
+; X86-NOBMI2-NEXT:    notl %edx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-NOBMI2-NEXT:    shrl %cl, %edx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    jne .LBB397_6
+; X86-NOBMI2-NEXT:  # %bb.5: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:  .LBB397_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl $1, %edx
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_and_64_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB397_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB397_2: # %entry
+; X86-BMI2-NEXT:    notl %edi
+; X86-BMI2-NEXT:    notl %ebp
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB397_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB397_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    notl %eax
+; X86-BMI2-NEXT:    notl %edx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB397_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    shrxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:  .LBB397_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_and_64_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movq $-2, %rdx
+; X64-NOBMI2-NEXT:    rolq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB397_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    andq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB397_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btq %rcx, %rax
+; X64-NOBMI2-NEXT:    setae %dl
+; X64-NOBMI2-NEXT:    movq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_and_64_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movq %rsi, %rcx
+; X64-BMI2-NEXT:    movq $-2, %rdx
+; X64-BMI2-NEXT:    rolq %cl, %rdx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB397_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rsi
+; X64-BMI2-NEXT:    andq %rdx, %rsi
+; X64-BMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB397_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %edx, %edx
+; X64-BMI2-NEXT:    btq %rcx, %rax
+; X64-BMI2-NEXT:    setae %dl
+; X64-BMI2-NEXT:    movq %rdx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %not = xor i64 %shl, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %rem = and i64 %c, 63
+  %1 = xor i64 %0, -1
+  %2 = lshr i64 %1, %rem
+  %conv = and i64 %2, 1
+  ret i64 %conv
+}
+
+define i64 @atomic_shl1_mask01_and_64_gpr_valz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_and_64_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    pushl %eax
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 24
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $63, %ecx
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    movl %ecx, (%esp) # 4-byte Spill
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB398_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB398_2: # %entry
+; X86-NOBMI2-NEXT:    notl %ebp
+; X86-NOBMI2-NEXT:    notl %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB398_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB398_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    notl %eax
+; X86-NOBMI2-NEXT:    notl %edx
+; X86-NOBMI2-NEXT:    movl (%esp), %ecx # 4-byte Reload
+; X86-NOBMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-NOBMI2-NEXT:    shrl %cl, %edx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    jne .LBB398_6
+; X86-NOBMI2-NEXT:  # %bb.5: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:  .LBB398_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl $1, %edx
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    addl $4, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_and_64_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    pushl %eax
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 24
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    andl $63, %ecx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    movl %ecx, (%esp) # 4-byte Spill
+; X86-BMI2-NEXT:    je .LBB398_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB398_2: # %entry
+; X86-BMI2-NEXT:    notl %edi
+; X86-BMI2-NEXT:    notl %ebp
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB398_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB398_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    notl %eax
+; X86-BMI2-NEXT:    notl %edx
+; X86-BMI2-NEXT:    movl (%esp), %ecx # 4-byte Reload
+; X86-BMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB398_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    shrxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:  .LBB398_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    addl $4, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_and_64_gpr_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl %ecx, %edx
+; X64-NOBMI2-NEXT:    andl $63, %edx
+; X64-NOBMI2-NEXT:    movq $-2, %rsi
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $rcx
+; X64-NOBMI2-NEXT:    rolq %cl, %rsi
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB398_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rcx
+; X64-NOBMI2-NEXT:    andq %rsi, %rcx
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB398_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    btq %rdx, %rax
+; X64-NOBMI2-NEXT:    setae %cl
+; X64-NOBMI2-NEXT:    movq %rcx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_and_64_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movq %rsi, %rcx
+; X64-BMI2-NEXT:    movl %ecx, %edx
+; X64-BMI2-NEXT:    andl $63, %edx
+; X64-BMI2-NEXT:    movq $-2, %rsi
+; X64-BMI2-NEXT:    # kill: def $cl killed $cl killed $rcx
+; X64-BMI2-NEXT:    rolq %cl, %rsi
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB398_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rcx
+; X64-BMI2-NEXT:    andq %rsi, %rcx
+; X64-BMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB398_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    btq %rdx, %rax
+; X64-BMI2-NEXT:    setae %cl
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 63
+  %shl = shl nuw i64 1, %rem
+  %not = xor i64 %shl, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %1 = xor i64 %0, -1
+  %2 = lshr i64 %1, %rem
+  %conv = and i64 %2, 1
+  ret i64 %conv
+}
+
+define i64 @atomic_blsi_and_64_gpr_valz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_blsi_and_64_gpr_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    subl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:    movl %eax, %ebp
+; X86-NOBMI2-NEXT:    negl %ebp
+; X86-NOBMI2-NEXT:    sbbl %ecx, %esi
+; X86-NOBMI2-NEXT:    andl %ecx, %esi
+; X86-NOBMI2-NEXT:    andl %eax, %ebp
+; X86-NOBMI2-NEXT:    movl %esi, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-NOBMI2-NEXT:    notl %esi
+; X86-NOBMI2-NEXT:    movl %ebp, (%esp) # 4-byte Spill
+; X86-NOBMI2-NEXT:    notl %ebp
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB399_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %ebp, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %esi, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB399_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl (%esp), %eax # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    andl {{[-0-9]+}}(%e{{[sb]}}p), %edx # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    sete %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    addl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_blsi_and_64_gpr_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    subl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    movl %eax, %ebp
+; X86-BMI2-NEXT:    negl %ebp
+; X86-BMI2-NEXT:    sbbl %ecx, %esi
+; X86-BMI2-NEXT:    andl %ecx, %esi
+; X86-BMI2-NEXT:    andl %eax, %ebp
+; X86-BMI2-NEXT:    movl %esi, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-BMI2-NEXT:    notl %esi
+; X86-BMI2-NEXT:    movl %ebp, (%esp) # 4-byte Spill
+; X86-BMI2-NEXT:    notl %ebp
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB399_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %esi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB399_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl (%esp), %eax # 4-byte Folded Reload
+; X86-BMI2-NEXT:    andl {{[-0-9]+}}(%e{{[sb]}}p), %edx # 4-byte Folded Reload
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    sete %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    addl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_and_64_gpr_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    blsiq %rsi, %rdx
+; X64-BMI2-NEXT:    movq %rdx, %rcx
+; X64-BMI2-NEXT:    notq %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB399_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rsi
+; X64-BMI2-NEXT:    andq %rcx, %rsi
+; X64-BMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB399_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    testq %rdx, %rax
+; X64-BMI2-NEXT:    sete %cl
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %sub = sub i64 0, %c
+  %and = and i64 %sub, %c
+  %not = xor i64 %and, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %and3 = and i64 %0, %and
+  %tobool.not = icmp eq i64 %and3, 0
+  %conv = zext i1 %tobool.not to i64
+  ret i64 %conv
+}
+
+define i64 @atomic_shl1_and_64_gpr_valnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_and_64_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB400_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB400_2: # %entry
+; X86-NOBMI2-NEXT:    notl %ebp
+; X86-NOBMI2-NEXT:    notl %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB400_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB400_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-NOBMI2-NEXT:    shrl %cl, %edx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    jne .LBB400_6
+; X86-NOBMI2-NEXT:  # %bb.5: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:  .LBB400_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl $1, %edx
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_and_64_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB400_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB400_2: # %entry
+; X86-BMI2-NEXT:    notl %edi
+; X86-BMI2-NEXT:    notl %ebp
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB400_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB400_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB400_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    shrxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:  .LBB400_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_and_64_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movq $-2, %rdx
+; X64-NOBMI2-NEXT:    rolq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB400_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    andq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB400_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btq %rcx, %rax
+; X64-NOBMI2-NEXT:    setb %dl
+; X64-NOBMI2-NEXT:    movq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_and_64_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movq %rsi, %rcx
+; X64-BMI2-NEXT:    movq $-2, %rdx
+; X64-BMI2-NEXT:    rolq %cl, %rdx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB400_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rsi
+; X64-BMI2-NEXT:    andq %rdx, %rsi
+; X64-BMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB400_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrxq %rcx, %rax, %rax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %not = xor i64 %shl, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %1 = lshr i64 %0, %c
+  %conv = and i64 %1, 1
+  ret i64 %conv
+}
+
+define i64 @atomic_shl2_and_64_gpr_valnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl2_and_64_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    subl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl $2, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB401_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB401_2: # %entry
+; X86-NOBMI2-NEXT:    movl %ebp, (%esp) # 4-byte Spill
+; X86-NOBMI2-NEXT:    notl %ebp
+; X86-NOBMI2-NEXT:    movl %edi, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-NOBMI2-NEXT:    notl %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB401_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB401_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl {{[-0-9]+}}(%e{{[sb]}}p), %eax # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    andl (%esp), %edx # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    setne %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    addl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl2_and_64_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    subl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movzbl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl $2, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB401_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB401_2: # %entry
+; X86-BMI2-NEXT:    movl %edi, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-BMI2-NEXT:    notl %edi
+; X86-BMI2-NEXT:    movl %ebp, (%esp) # 4-byte Spill
+; X86-BMI2-NEXT:    notl %ebp
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB401_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB401_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl (%esp), %eax # 4-byte Folded Reload
+; X86-BMI2-NEXT:    andl {{[-0-9]+}}(%e{{[sb]}}p), %edx # 4-byte Folded Reload
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    setne %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    addl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl2_and_64_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl $2, %edx
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $rcx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq %rdx, %rcx
+; X64-NOBMI2-NEXT:    notq %rcx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB401_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    andq %rcx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB401_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    testq %rdx, %rax
+; X64-NOBMI2-NEXT:    setne %cl
+; X64-NOBMI2-NEXT:    movq %rcx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl2_and_64_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $2, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rdx
+; X64-BMI2-NEXT:    movq %rdx, %rcx
+; X64-BMI2-NEXT:    notq %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB401_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rsi
+; X64-BMI2-NEXT:    andq %rcx, %rsi
+; X64-BMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB401_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    testq %rdx, %rax
+; X64-BMI2-NEXT:    setne %cl
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl i64 2, %c
+  %not = xor i64 %shl, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %and = and i64 %0, %shl
+  %tobool = icmp ne i64 %and, 0
+  %conv = zext i1 %tobool to i64
+  ret i64 %conv
+}
+
+define i64 @atomic_shl1_neq_and_64_gpr_valnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_and_64_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB402_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB402_2: # %entry
+; X86-NOBMI2-NEXT:    notl %ebp
+; X86-NOBMI2-NEXT:    notl %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB402_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB402_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    incb %cl
+; X86-NOBMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-NOBMI2-NEXT:    shrl %cl, %edx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    jne .LBB402_6
+; X86-NOBMI2-NEXT:  # %bb.5: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:  .LBB402_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl $1, %edx
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_and_64_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB402_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB402_2: # %entry
+; X86-BMI2-NEXT:    notl %edi
+; X86-BMI2-NEXT:    notl %ebp
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB402_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB402_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    incb %cl
+; X86-BMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB402_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    shrxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:  .LBB402_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_and_64_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movq $-2, %rdx
+; X64-NOBMI2-NEXT:    rolq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB402_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    andq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB402_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    incb %cl
+; X64-NOBMI2-NEXT:    movzbl %cl, %edx
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    btq %rdx, %rax
+; X64-NOBMI2-NEXT:    setb %cl
+; X64-NOBMI2-NEXT:    movq %rcx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_and_64_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movq %rsi, %rcx
+; X64-BMI2-NEXT:    movq $-2, %rdx
+; X64-BMI2-NEXT:    rolq %cl, %rdx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB402_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rsi
+; X64-BMI2-NEXT:    andq %rdx, %rsi
+; X64-BMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB402_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    incb %cl
+; X64-BMI2-NEXT:    shrxq %rcx, %rax, %rax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %not = xor i64 %shl, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %add = add i64 %c, 1
+  %1 = lshr i64 %0, %add
+  %conv = and i64 %1, 1
+  ret i64 %conv
+}
+
+define i64 @atomic_shl1_small_mask_and_64_gpr_valnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_small_mask_and_64_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    pushl %eax
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 24
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    andl $31, %eax
+; X86-NOBMI2-NEXT:    movl %eax, (%esp) # 4-byte Spill
+; X86-NOBMI2-NEXT:    movl $-2, %ebp
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    roll %cl, %ebp
+; X86-NOBMI2-NEXT:    movl $-1, %esi
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB403_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %ebp, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %esi, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB403_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    movl (%esp), %edx # 4-byte Reload
+; X86-NOBMI2-NEXT:    btl %edx, %eax
+; X86-NOBMI2-NEXT:    setb %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    addl $4, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_small_mask_and_64_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    pushl %eax
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 24
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    andl $31, %eax
+; X86-BMI2-NEXT:    movl %eax, (%esp) # 4-byte Spill
+; X86-BMI2-NEXT:    movl $-2, %ebp
+; X86-BMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-BMI2-NEXT:    roll %cl, %ebp
+; X86-BMI2-NEXT:    movl $-1, %esi
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB403_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %esi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB403_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl (%esp), %ecx # 4-byte Reload
+; X86-BMI2-NEXT:    shrxl %ecx, %eax, %eax
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    addl $4, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_small_mask_and_64_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    andl $31, %ecx
+; X64-NOBMI2-NEXT:    movq $-2, %rdx
+; X64-NOBMI2-NEXT:    rolq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB403_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    andq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB403_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btl %ecx, %eax
+; X64-NOBMI2-NEXT:    setb %dl
+; X64-NOBMI2-NEXT:    movq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_small_mask_and_64_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movq %rsi, %rcx
+; X64-BMI2-NEXT:    andl $31, %ecx
+; X64-BMI2-NEXT:    movq $-2, %rdx
+; X64-BMI2-NEXT:    rolq %cl, %rdx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB403_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rsi
+; X64-BMI2-NEXT:    andq %rdx, %rsi
+; X64-BMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB403_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrxq %rcx, %rax, %rax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 31
+  %shl = shl nuw nsw i64 1, %rem
+  %not = xor i64 %shl, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %1 = lshr i64 %0, %rem
+  %conv = and i64 %1, 1
+  ret i64 %conv
+}
+
+define i64 @atomic_shl1_mask0_and_64_gpr_valnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_and_64_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB404_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB404_2: # %entry
+; X86-NOBMI2-NEXT:    notl %ebp
+; X86-NOBMI2-NEXT:    notl %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB404_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB404_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-NOBMI2-NEXT:    shrl %cl, %edx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    jne .LBB404_6
+; X86-NOBMI2-NEXT:  # %bb.5: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:  .LBB404_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl $1, %edx
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_and_64_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB404_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB404_2: # %entry
+; X86-BMI2-NEXT:    notl %edi
+; X86-BMI2-NEXT:    notl %ebp
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB404_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB404_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB404_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    shrxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:  .LBB404_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_and_64_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movq $-2, %rdx
+; X64-NOBMI2-NEXT:    rolq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB404_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    andq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB404_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btq %rcx, %rax
+; X64-NOBMI2-NEXT:    setb %dl
+; X64-NOBMI2-NEXT:    movq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_and_64_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movq %rsi, %rcx
+; X64-BMI2-NEXT:    movq $-2, %rdx
+; X64-BMI2-NEXT:    rolq %cl, %rdx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB404_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rsi
+; X64-BMI2-NEXT:    andq %rdx, %rsi
+; X64-BMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB404_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrxq %rcx, %rax, %rax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 63
+  %shl = shl nuw i64 1, %rem
+  %not = xor i64 %shl, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %1 = lshr i64 %0, %c
+  %conv = and i64 %1, 1
+  ret i64 %conv
+}
+
+define i64 @atomic_shl1_mask1_and_64_gpr_valnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_and_64_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB405_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB405_2: # %entry
+; X86-NOBMI2-NEXT:    notl %ebp
+; X86-NOBMI2-NEXT:    notl %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB405_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB405_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-NOBMI2-NEXT:    shrl %cl, %edx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    jne .LBB405_6
+; X86-NOBMI2-NEXT:  # %bb.5: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:  .LBB405_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl $1, %edx
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_and_64_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB405_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB405_2: # %entry
+; X86-BMI2-NEXT:    notl %edi
+; X86-BMI2-NEXT:    notl %ebp
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB405_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB405_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB405_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    shrxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:  .LBB405_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_and_64_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movq $-2, %rdx
+; X64-NOBMI2-NEXT:    rolq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB405_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    andq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB405_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %edx, %edx
+; X64-NOBMI2-NEXT:    btq %rcx, %rax
+; X64-NOBMI2-NEXT:    setb %dl
+; X64-NOBMI2-NEXT:    movq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_and_64_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movq %rsi, %rcx
+; X64-BMI2-NEXT:    movq $-2, %rdx
+; X64-BMI2-NEXT:    rolq %cl, %rdx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB405_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rsi
+; X64-BMI2-NEXT:    andq %rdx, %rsi
+; X64-BMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB405_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrxq %rcx, %rax, %rax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %not = xor i64 %shl, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %rem = and i64 %c, 63
+  %1 = lshr i64 %0, %rem
+  %conv = and i64 %1, 1
+  ret i64 %conv
+}
+
+define i64 @atomic_shl1_mask01_and_64_gpr_valnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_and_64_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    pushl %eax
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 24
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $63, %ecx
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    movl %ecx, (%esp) # 4-byte Spill
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB406_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB406_2: # %entry
+; X86-NOBMI2-NEXT:    notl %ebp
+; X86-NOBMI2-NEXT:    notl %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB406_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB406_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl (%esp), %ecx # 4-byte Reload
+; X86-NOBMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-NOBMI2-NEXT:    shrl %cl, %edx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    jne .LBB406_6
+; X86-NOBMI2-NEXT:  # %bb.5: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl %eax, %edx
+; X86-NOBMI2-NEXT:  .LBB406_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl $1, %edx
+; X86-NOBMI2-NEXT:    movl %edx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    addl $4, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_and_64_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    pushl %eax
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 24
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    andl $63, %ecx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    movl %ecx, (%esp) # 4-byte Spill
+; X86-BMI2-NEXT:    je .LBB406_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB406_2: # %entry
+; X86-BMI2-NEXT:    notl %edi
+; X86-BMI2-NEXT:    notl %ebp
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB406_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB406_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl (%esp), %ecx # 4-byte Reload
+; X86-BMI2-NEXT:    shrdl %cl, %edx, %eax
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB406_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    shrxl %ecx, %edx, %eax
+; X86-BMI2-NEXT:  .LBB406_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    addl $4, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_and_64_gpr_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl %ecx, %edx
+; X64-NOBMI2-NEXT:    andl $63, %edx
+; X64-NOBMI2-NEXT:    movq $-2, %rsi
+; X64-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $rcx
+; X64-NOBMI2-NEXT:    rolq %cl, %rsi
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB406_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rcx
+; X64-NOBMI2-NEXT:    andq %rsi, %rcx
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB406_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    btq %rdx, %rax
+; X64-NOBMI2-NEXT:    setb %cl
+; X64-NOBMI2-NEXT:    movq %rcx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_and_64_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movq %rsi, %rcx
+; X64-BMI2-NEXT:    movl %ecx, %edx
+; X64-BMI2-NEXT:    andl $63, %edx
+; X64-BMI2-NEXT:    movq $-2, %rsi
+; X64-BMI2-NEXT:    # kill: def $cl killed $cl killed $rcx
+; X64-BMI2-NEXT:    rolq %cl, %rsi
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB406_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rcx
+; X64-BMI2-NEXT:    andq %rsi, %rcx
+; X64-BMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB406_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrxq %rdx, %rax, %rax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 63
+  %shl = shl nuw i64 1, %rem
+  %not = xor i64 %shl, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %1 = lshr i64 %0, %rem
+  %conv = and i64 %1, 1
+  ret i64 %conv
+}
+
+define i64 @atomic_blsi_and_64_gpr_valnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_blsi_and_64_gpr_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    subl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:    movl %eax, %ebp
+; X86-NOBMI2-NEXT:    negl %ebp
+; X86-NOBMI2-NEXT:    sbbl %ecx, %esi
+; X86-NOBMI2-NEXT:    andl %ecx, %esi
+; X86-NOBMI2-NEXT:    andl %eax, %ebp
+; X86-NOBMI2-NEXT:    movl %esi, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-NOBMI2-NEXT:    notl %esi
+; X86-NOBMI2-NEXT:    movl %ebp, (%esp) # 4-byte Spill
+; X86-NOBMI2-NEXT:    notl %ebp
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB407_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %ebp, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %esi, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB407_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl (%esp), %eax # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    andl {{[-0-9]+}}(%e{{[sb]}}p), %edx # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    setne %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    addl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_blsi_and_64_gpr_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    subl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    movl %eax, %ebp
+; X86-BMI2-NEXT:    negl %ebp
+; X86-BMI2-NEXT:    sbbl %ecx, %esi
+; X86-BMI2-NEXT:    andl %ecx, %esi
+; X86-BMI2-NEXT:    andl %eax, %ebp
+; X86-BMI2-NEXT:    movl %esi, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-BMI2-NEXT:    notl %esi
+; X86-BMI2-NEXT:    movl %ebp, (%esp) # 4-byte Spill
+; X86-BMI2-NEXT:    notl %ebp
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB407_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %esi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB407_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl (%esp), %eax # 4-byte Folded Reload
+; X86-BMI2-NEXT:    andl {{[-0-9]+}}(%e{{[sb]}}p), %edx # 4-byte Folded Reload
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    setne %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    addl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_and_64_gpr_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    blsiq %rsi, %rdx
+; X64-BMI2-NEXT:    movq %rdx, %rcx
+; X64-BMI2-NEXT:    notq %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB407_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rsi
+; X64-BMI2-NEXT:    andq %rcx, %rsi
+; X64-BMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB407_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    testq %rdx, %rax
+; X64-BMI2-NEXT:    setne %cl
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %sub = sub i64 0, %c
+  %and = and i64 %sub, %c
+  %not = xor i64 %and, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %and3 = and i64 %0, %and
+  %tobool = icmp ne i64 %and3, 0
+  %conv = zext i1 %tobool to i64
+  ret i64 %conv
+}
+
+define i64 @atomic_shl1_and_64_gpr_br(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_and_64_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    subl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB408_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB408_2: # %entry
+; X86-NOBMI2-NEXT:    movl %ebp, (%esp) # 4-byte Spill
+; X86-NOBMI2-NEXT:    notl %ebp
+; X86-NOBMI2-NEXT:    movl %edi, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-NOBMI2-NEXT:    notl %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB408_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB408_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl {{[-0-9]+}}(%e{{[sb]}}p), %eax # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    andl (%esp), %edx # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    je .LBB408_5
+; X86-NOBMI2-NEXT:  # %bb.6: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-NOBMI2-NEXT:    jmp .LBB408_7
+; X86-NOBMI2-NEXT:  .LBB408_5:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB408_7: # %return
+; X86-NOBMI2-NEXT:    addl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_and_64_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    subl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB408_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB408_2: # %entry
+; X86-BMI2-NEXT:    movl %edi, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-BMI2-NEXT:    notl %edi
+; X86-BMI2-NEXT:    movl %ebp, (%esp) # 4-byte Spill
+; X86-BMI2-NEXT:    notl %ebp
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB408_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB408_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl (%esp), %eax # 4-byte Folded Reload
+; X86-BMI2-NEXT:    andl {{[-0-9]+}}(%e{{[sb]}}p), %edx # 4-byte Folded Reload
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    je .LBB408_5
+; X86-BMI2-NEXT:  # %bb.6: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-BMI2-NEXT:    jmp .LBB408_7
+; X86-BMI2-NEXT:  .LBB408_5:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB408_7: # %return
+; X86-BMI2-NEXT:    addl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_and_64_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $63, %eax
+; X64-NOBMI2-NEXT:    lock btrq %rax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB408_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB408_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_and_64_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $63, %eax
+; X64-BMI2-NEXT:    lock btrq %rax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB408_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB408_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %not = xor i64 %shl, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %and = and i64 %0, %shl
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl2_and_64_gpr_br(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl2_and_64_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    subl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $2, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB409_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB409_2: # %entry
+; X86-NOBMI2-NEXT:    movl %ebp, (%esp) # 4-byte Spill
+; X86-NOBMI2-NEXT:    notl %ebp
+; X86-NOBMI2-NEXT:    movl %edi, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-NOBMI2-NEXT:    notl %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB409_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB409_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl {{[-0-9]+}}(%e{{[sb]}}p), %eax # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    andl (%esp), %edx # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    je .LBB409_5
+; X86-NOBMI2-NEXT:  # %bb.6: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-NOBMI2-NEXT:    jmp .LBB409_7
+; X86-NOBMI2-NEXT:  .LBB409_5:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB409_7: # %return
+; X86-NOBMI2-NEXT:    addl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl2_and_64_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    subl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $2, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB409_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB409_2: # %entry
+; X86-BMI2-NEXT:    movl %edi, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-BMI2-NEXT:    notl %edi
+; X86-BMI2-NEXT:    movl %ebp, (%esp) # 4-byte Spill
+; X86-BMI2-NEXT:    notl %ebp
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB409_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB409_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl (%esp), %eax # 4-byte Folded Reload
+; X86-BMI2-NEXT:    andl {{[-0-9]+}}(%e{{[sb]}}p), %edx # 4-byte Folded Reload
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    je .LBB409_5
+; X86-BMI2-NEXT:  # %bb.6: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-BMI2-NEXT:    jmp .LBB409_7
+; X86-BMI2-NEXT:  .LBB409_5:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB409_7: # %return
+; X86-BMI2-NEXT:    addl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl2_and_64_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl $2, %edx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq %rdx, %rsi
+; X64-NOBMI2-NEXT:    notq %rsi
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB409_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %r8
+; X64-NOBMI2-NEXT:    andq %rsi, %r8
+; X64-NOBMI2-NEXT:    lock cmpxchgq %r8, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB409_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    testq %rdx, %rax
+; X64-NOBMI2-NEXT:    je .LBB409_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rcx,8), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB409_3:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl2_and_64_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $2, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rcx
+; X64-BMI2-NEXT:    movq %rcx, %rdx
+; X64-BMI2-NEXT:    notq %rdx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB409_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %r8
+; X64-BMI2-NEXT:    andq %rdx, %r8
+; X64-BMI2-NEXT:    lock cmpxchgq %r8, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB409_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    testq %rcx, %rax
+; X64-BMI2-NEXT:    je .LBB409_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB409_3:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl i64 2, %c
+  %not = xor i64 %shl, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %and = and i64 %0, %shl
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_neq_and_64_gpr_br(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_and_64_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %esi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB410_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %esi, %ebp
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:  .LBB410_2: # %entry
+; X86-NOBMI2-NEXT:    notl %ebp
+; X86-NOBMI2-NEXT:    notl %esi
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB410_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %esi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB410_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    incb %cl
+; X86-NOBMI2-NEXT:    movl $1, %ebx
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %ebx, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %ebx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB410_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    movl %ebx, %ebp
+; X86-NOBMI2-NEXT:    xorl %ebx, %ebx
+; X86-NOBMI2-NEXT:  .LBB410_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    andl %ebx, %eax
+; X86-NOBMI2-NEXT:    orl %edx, %eax
+; X86-NOBMI2-NEXT:    je .LBB410_7
+; X86-NOBMI2-NEXT:  # %bb.8: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi,%ecx,8), %esi
+; X86-NOBMI2-NEXT:    jmp .LBB410_9
+; X86-NOBMI2-NEXT:  .LBB410_7:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB410_9: # %return
+; X86-NOBMI2-NEXT:    movl %esi, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_and_64_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %esi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB410_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %esi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB410_2: # %entry
+; X86-BMI2-NEXT:    notl %esi
+; X86-BMI2-NEXT:    notl %ebp
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB410_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %esi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB410_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    # kill: def $cl killed $cl killed $ecx def $ecx
+; X86-BMI2-NEXT:    incb %cl
+; X86-BMI2-NEXT:    movl $1, %ebp
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    xorl %ebx, %ebx
+; X86-BMI2-NEXT:    shldl %cl, %ebp, %ebx
+; X86-BMI2-NEXT:    shlxl %ecx, %ebp, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB410_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    movl %ebp, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB410_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebx, %edx
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    orl %edx, %eax
+; X86-BMI2-NEXT:    je .LBB410_7
+; X86-BMI2-NEXT:  # %bb.8: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%edi,%ecx,8), %esi
+; X86-BMI2-NEXT:    jmp .LBB410_9
+; X86-BMI2-NEXT:  .LBB410_7:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB410_9: # %return
+; X86-BMI2-NEXT:    movl %esi, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_and_64_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movq $-2, %rdx
+; X64-NOBMI2-NEXT:    rolq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB410_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    andq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB410_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    leal 1(%rcx), %edx
+; X64-NOBMI2-NEXT:    movzbl %dl, %edx
+; X64-NOBMI2-NEXT:    btq %rdx, %rax
+; X64-NOBMI2-NEXT:    jae .LBB410_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rcx,8), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB410_3:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_and_64_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movq %rsi, %rcx
+; X64-BMI2-NEXT:    movq $-2, %rdx
+; X64-BMI2-NEXT:    rolq %cl, %rdx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB410_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rsi
+; X64-BMI2-NEXT:    andq %rdx, %rsi
+; X64-BMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB410_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    leal 1(%rcx), %edx
+; X64-BMI2-NEXT:    movzbl %dl, %edx
+; X64-BMI2-NEXT:    btq %rdx, %rax
+; X64-BMI2-NEXT:    jae .LBB410_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rcx,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB410_3:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %not = xor i64 %shl, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %add = add i64 %c, 1
+  %shl1 = shl nuw i64 1, %add
+  %and = and i64 %0, %shl1
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_small_mask_and_64_gpr_br(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_small_mask_and_64_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    subl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $31, %ecx
+; X86-NOBMI2-NEXT:    movl $1, %eax
+; X86-NOBMI2-NEXT:    shll %cl, %eax
+; X86-NOBMI2-NEXT:    movl %eax, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-NOBMI2-NEXT:    movl $-2, %ebp
+; X86-NOBMI2-NEXT:    movl %ecx, (%esp) # 4-byte Spill
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    roll %cl, %ebp
+; X86-NOBMI2-NEXT:    movl $-1, %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB411_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %ebp, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %edi, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB411_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    testl %eax, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    je .LBB411_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movl (%esp), %ecx # 4-byte Reload
+; X86-NOBMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-NOBMI2-NEXT:    jmp .LBB411_5
+; X86-NOBMI2-NEXT:  .LBB411_3:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB411_5: # %return
+; X86-NOBMI2-NEXT:    addl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_small_mask_and_64_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    subl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    andl $31, %ecx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %eax
+; X86-BMI2-NEXT:    movl %eax, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-BMI2-NEXT:    movl $-2, %ebp
+; X86-BMI2-NEXT:    movl %ecx, (%esp) # 4-byte Spill
+; X86-BMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-BMI2-NEXT:    roll %cl, %ebp
+; X86-BMI2-NEXT:    movl $-1, %edi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB411_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB411_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    testl %eax, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Folded Reload
+; X86-BMI2-NEXT:    je .LBB411_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movl (%esp), %ecx # 4-byte Reload
+; X86-BMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-BMI2-NEXT:    jmp .LBB411_5
+; X86-BMI2-NEXT:  .LBB411_3:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB411_5: # %return
+; X86-BMI2-NEXT:    addl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_small_mask_and_64_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    andl $31, %esi
+; X64-NOBMI2-NEXT:    lock btrq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB411_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB411_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_small_mask_and_64_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $31, %esi
+; X64-BMI2-NEXT:    lock btrq %rsi, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB411_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB411_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 31
+  %shl = shl nuw nsw i64 1, %rem
+  %not = xor i64 %shl, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %and = and i64 %0, %shl
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %rem
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_mask0_and_64_gpr_br(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_and_64_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %esi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB412_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %esi, %ebp
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:  .LBB412_2: # %entry
+; X86-NOBMI2-NEXT:    notl %ebp
+; X86-NOBMI2-NEXT:    notl %esi
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB412_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %esi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB412_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl $1, %ebx
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    shldl %cl, %ebx, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %ebx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB412_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    movl %ebx, %ebp
+; X86-NOBMI2-NEXT:    xorl %ebx, %ebx
+; X86-NOBMI2-NEXT:  .LBB412_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    andl %ebx, %eax
+; X86-NOBMI2-NEXT:    orl %edx, %eax
+; X86-NOBMI2-NEXT:    je .LBB412_7
+; X86-NOBMI2-NEXT:  # %bb.8: # %if.then
+; X86-NOBMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi,%ecx,8), %esi
+; X86-NOBMI2-NEXT:    jmp .LBB412_9
+; X86-NOBMI2-NEXT:  .LBB412_7:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB412_9: # %return
+; X86-NOBMI2-NEXT:    movl %esi, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_and_64_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %esi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB412_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %esi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB412_2: # %entry
+; X86-BMI2-NEXT:    notl %esi
+; X86-BMI2-NEXT:    notl %ebp
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB412_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %esi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB412_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl $1, %ebp
+; X86-BMI2-NEXT:    xorl %ebx, %ebx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    shldl %cl, %ebp, %ebx
+; X86-BMI2-NEXT:    shlxl %ecx, %ebp, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB412_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    movl %ebp, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB412_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebx, %edx
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    orl %edx, %eax
+; X86-BMI2-NEXT:    je .LBB412_7
+; X86-BMI2-NEXT:  # %bb.8: # %if.then
+; X86-BMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%edi,%ecx,8), %edx
+; X86-BMI2-NEXT:    jmp .LBB412_9
+; X86-BMI2-NEXT:  .LBB412_7:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:  .LBB412_9: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_and_64_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $63, %eax
+; X64-NOBMI2-NEXT:    lock btrq %rax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB412_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB412_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_and_64_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $63, %eax
+; X64-BMI2-NEXT:    lock btrq %rax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB412_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB412_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 63
+  %shl = shl nuw i64 1, %rem
+  %not = xor i64 %shl, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %shl1 = shl nuw i64 1, %c
+  %and = and i64 %0, %shl1
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_mask1_and_64_gpr_br(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_and_64_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %esi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB413_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %esi, %ebp
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:  .LBB413_2: # %entry
+; X86-NOBMI2-NEXT:    notl %ebp
+; X86-NOBMI2-NEXT:    notl %esi
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB413_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %esi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB413_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl $1, %ebx
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    shldl %cl, %ebx, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %ebx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB413_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    movl %ebx, %ebp
+; X86-NOBMI2-NEXT:    xorl %ebx, %ebx
+; X86-NOBMI2-NEXT:  .LBB413_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    andl %ebx, %eax
+; X86-NOBMI2-NEXT:    orl %edx, %eax
+; X86-NOBMI2-NEXT:    je .LBB413_7
+; X86-NOBMI2-NEXT:  # %bb.8: # %if.then
+; X86-NOBMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi,%ecx,8), %esi
+; X86-NOBMI2-NEXT:    jmp .LBB413_9
+; X86-NOBMI2-NEXT:  .LBB413_7:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB413_9: # %return
+; X86-NOBMI2-NEXT:    movl %esi, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_and_64_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %esi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB413_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %esi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB413_2: # %entry
+; X86-BMI2-NEXT:    notl %esi
+; X86-BMI2-NEXT:    notl %ebp
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB413_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %esi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB413_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl $1, %ebp
+; X86-BMI2-NEXT:    xorl %ebx, %ebx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    shldl %cl, %ebp, %ebx
+; X86-BMI2-NEXT:    shlxl %ecx, %ebp, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB413_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    movl %ebp, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB413_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebx, %edx
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    orl %edx, %eax
+; X86-BMI2-NEXT:    je .LBB413_7
+; X86-BMI2-NEXT:  # %bb.8: # %if.then
+; X86-BMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%edi,%ecx,8), %edx
+; X86-BMI2-NEXT:    jmp .LBB413_9
+; X86-BMI2-NEXT:  .LBB413_7:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:  .LBB413_9: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_and_64_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $63, %eax
+; X64-NOBMI2-NEXT:    lock btrq %rax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB413_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB413_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_and_64_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $63, %eax
+; X64-BMI2-NEXT:    lock btrq %rax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB413_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB413_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %not = xor i64 %shl, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %rem = and i64 %c, 63
+  %shl1 = shl nuw i64 1, %rem
+  %and = and i64 %0, %shl1
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_mask01_and_64_gpr_br(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_and_64_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    subl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB414_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB414_2: # %entry
+; X86-NOBMI2-NEXT:    movl %ebp, (%esp) # 4-byte Spill
+; X86-NOBMI2-NEXT:    notl %ebp
+; X86-NOBMI2-NEXT:    movl %edi, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-NOBMI2-NEXT:    notl %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB414_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB414_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl {{[-0-9]+}}(%e{{[sb]}}p), %eax # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    andl (%esp), %edx # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    je .LBB414_5
+; X86-NOBMI2-NEXT:  # %bb.6: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-NOBMI2-NEXT:    jmp .LBB414_7
+; X86-NOBMI2-NEXT:  .LBB414_5:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB414_7: # %return
+; X86-NOBMI2-NEXT:    addl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_and_64_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    subl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB414_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB414_2: # %entry
+; X86-BMI2-NEXT:    movl %edi, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-BMI2-NEXT:    notl %edi
+; X86-BMI2-NEXT:    movl %ebp, (%esp) # 4-byte Spill
+; X86-BMI2-NEXT:    notl %ebp
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB414_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB414_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl (%esp), %eax # 4-byte Folded Reload
+; X86-BMI2-NEXT:    andl {{[-0-9]+}}(%e{{[sb]}}p), %edx # 4-byte Folded Reload
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    je .LBB414_5
+; X86-BMI2-NEXT:  # %bb.6: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-BMI2-NEXT:    jmp .LBB414_7
+; X86-BMI2-NEXT:  .LBB414_5:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB414_7: # %return
+; X86-BMI2-NEXT:    addl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_and_64_gpr_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $63, %eax
+; X64-NOBMI2-NEXT:    lock btrq %rax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB414_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB414_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_and_64_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $63, %eax
+; X64-BMI2-NEXT:    lock btrq %rax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB414_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB414_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 63
+  %shl = shl nuw i64 1, %rem
+  %not = xor i64 %shl, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %and = and i64 %0, %shl
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_blsi_and_64_gpr_br(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_blsi_and_64_gpr_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    subl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    movl %ecx, %esi
+; X86-NOBMI2-NEXT:    negl %esi
+; X86-NOBMI2-NEXT:    sbbl %eax, %ebp
+; X86-NOBMI2-NEXT:    andl %eax, %ebp
+; X86-NOBMI2-NEXT:    andl %ecx, %esi
+; X86-NOBMI2-NEXT:    movl %ebp, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-NOBMI2-NEXT:    notl %ebp
+; X86-NOBMI2-NEXT:    movl %esi, (%esp) # 4-byte Spill
+; X86-NOBMI2-NEXT:    notl %esi
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB415_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %esi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB415_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl (%esp), %eax # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    andl {{[-0-9]+}}(%e{{[sb]}}p), %edx # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    je .LBB415_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi,%ecx,8), %edx
+; X86-NOBMI2-NEXT:    jmp .LBB415_5
+; X86-NOBMI2-NEXT:  .LBB415_3:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB415_5: # %return
+; X86-NOBMI2-NEXT:    addl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_blsi_and_64_gpr_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    subl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:    movl %ecx, %esi
+; X86-BMI2-NEXT:    negl %esi
+; X86-BMI2-NEXT:    sbbl %eax, %ebp
+; X86-BMI2-NEXT:    andl %eax, %ebp
+; X86-BMI2-NEXT:    andl %ecx, %esi
+; X86-BMI2-NEXT:    movl %ebp, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-BMI2-NEXT:    notl %ebp
+; X86-BMI2-NEXT:    movl %esi, (%esp) # 4-byte Spill
+; X86-BMI2-NEXT:    notl %esi
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB415_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %esi, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %ebp, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB415_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl (%esp), %eax # 4-byte Folded Reload
+; X86-BMI2-NEXT:    andl {{[-0-9]+}}(%e{{[sb]}}p), %edx # 4-byte Folded Reload
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    je .LBB415_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%edi,%ecx,8), %edx
+; X86-BMI2-NEXT:    jmp .LBB415_5
+; X86-BMI2-NEXT:  .LBB415_3:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB415_5: # %return
+; X86-BMI2-NEXT:    addl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_and_64_gpr_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    blsiq %rsi, %rcx
+; X64-BMI2-NEXT:    movq %rcx, %rdx
+; X64-BMI2-NEXT:    notq %rdx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB415_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %r8
+; X64-BMI2-NEXT:    andq %rdx, %r8
+; X64-BMI2-NEXT:    lock cmpxchgq %r8, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB415_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    testq %rcx, %rax
+; X64-BMI2-NEXT:    je .LBB415_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB415_3:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %sub = sub i64 0, %c
+  %and = and i64 %sub, %c
+  %not = xor i64 %and, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %and3 = and i64 %0, %and
+  %tobool.not = icmp eq i64 %and3, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_and_64_gpr_brz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_and_64_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    subl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB416_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB416_2: # %entry
+; X86-NOBMI2-NEXT:    movl %ebp, (%esp) # 4-byte Spill
+; X86-NOBMI2-NEXT:    notl %ebp
+; X86-NOBMI2-NEXT:    movl %edi, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-NOBMI2-NEXT:    notl %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB416_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB416_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl {{[-0-9]+}}(%e{{[sb]}}p), %eax # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    andl (%esp), %edx # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    je .LBB416_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jmp .LBB416_7
+; X86-NOBMI2-NEXT:  .LBB416_6: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-NOBMI2-NEXT:  .LBB416_7: # %return
+; X86-NOBMI2-NEXT:    addl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_and_64_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    subl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB416_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB416_2: # %entry
+; X86-BMI2-NEXT:    movl %edi, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-BMI2-NEXT:    notl %edi
+; X86-BMI2-NEXT:    movl %ebp, (%esp) # 4-byte Spill
+; X86-BMI2-NEXT:    notl %ebp
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB416_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB416_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl (%esp), %eax # 4-byte Folded Reload
+; X86-BMI2-NEXT:    andl {{[-0-9]+}}(%e{{[sb]}}p), %edx # 4-byte Folded Reload
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    je .LBB416_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jmp .LBB416_7
+; X86-BMI2-NEXT:  .LBB416_6: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-BMI2-NEXT:  .LBB416_7: # %return
+; X86-BMI2-NEXT:    addl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_and_64_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $63, %eax
+; X64-NOBMI2-NEXT:    lock btrq %rax, (%rdi)
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    jae .LBB416_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB416_1: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_and_64_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $63, %eax
+; X64-BMI2-NEXT:    lock btrq %rax, (%rdi)
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    jae .LBB416_1
+; X64-BMI2-NEXT:  # %bb.2: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB416_1: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %not = xor i64 %shl, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %and = and i64 %0, %shl
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl2_and_64_gpr_brz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl2_and_64_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    subl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $2, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB417_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB417_2: # %entry
+; X86-NOBMI2-NEXT:    movl %ebp, (%esp) # 4-byte Spill
+; X86-NOBMI2-NEXT:    notl %ebp
+; X86-NOBMI2-NEXT:    movl %edi, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-NOBMI2-NEXT:    notl %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB417_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB417_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl {{[-0-9]+}}(%e{{[sb]}}p), %eax # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    andl (%esp), %edx # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    je .LBB417_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jmp .LBB417_7
+; X86-NOBMI2-NEXT:  .LBB417_6: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-NOBMI2-NEXT:  .LBB417_7: # %return
+; X86-NOBMI2-NEXT:    addl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl2_and_64_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    subl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $2, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB417_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB417_2: # %entry
+; X86-BMI2-NEXT:    movl %edi, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-BMI2-NEXT:    notl %edi
+; X86-BMI2-NEXT:    movl %ebp, (%esp) # 4-byte Spill
+; X86-BMI2-NEXT:    notl %ebp
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB417_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB417_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl (%esp), %eax # 4-byte Folded Reload
+; X86-BMI2-NEXT:    andl {{[-0-9]+}}(%e{{[sb]}}p), %edx # 4-byte Folded Reload
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    je .LBB417_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jmp .LBB417_7
+; X86-BMI2-NEXT:  .LBB417_6: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-BMI2-NEXT:  .LBB417_7: # %return
+; X86-BMI2-NEXT:    addl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl2_and_64_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl $2, %esi
+; X64-NOBMI2-NEXT:    shlq %cl, %rsi
+; X64-NOBMI2-NEXT:    movq %rsi, %rdx
+; X64-NOBMI2-NEXT:    notq %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB417_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %r8
+; X64-NOBMI2-NEXT:    andq %rdx, %r8
+; X64-NOBMI2-NEXT:    lock cmpxchgq %r8, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB417_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movl $123, %edx
+; X64-NOBMI2-NEXT:    testq %rsi, %rax
+; X64-NOBMI2-NEXT:    je .LBB417_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %return
+; X64-NOBMI2-NEXT:    movq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB417_3: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rcx,8), %rdx
+; X64-NOBMI2-NEXT:    movq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl2_and_64_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $2, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rdx
+; X64-BMI2-NEXT:    movq %rdx, %rcx
+; X64-BMI2-NEXT:    notq %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB417_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %r8
+; X64-BMI2-NEXT:    andq %rcx, %r8
+; X64-BMI2-NEXT:    lock cmpxchgq %r8, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB417_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movl $123, %ecx
+; X64-BMI2-NEXT:    testq %rdx, %rax
+; X64-BMI2-NEXT:    je .LBB417_3
+; X64-BMI2-NEXT:  # %bb.4: # %return
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB417_3: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rcx
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl i64 2, %c
+  %not = xor i64 %shl, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %and = and i64 %0, %shl
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_neq_and_64_gpr_brz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_and_64_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %esi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB418_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %esi, %ebp
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:  .LBB418_2: # %entry
+; X86-NOBMI2-NEXT:    notl %ebp
+; X86-NOBMI2-NEXT:    notl %esi
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB418_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %esi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB418_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    incb %cl
+; X86-NOBMI2-NEXT:    movl $1, %ebx
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %ebx, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %ebx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB418_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    movl %ebx, %ebp
+; X86-NOBMI2-NEXT:    xorl %ebx, %ebx
+; X86-NOBMI2-NEXT:  .LBB418_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    andl %ebx, %eax
+; X86-NOBMI2-NEXT:    movl $123, %ecx
+; X86-NOBMI2-NEXT:    orl %edx, %eax
+; X86-NOBMI2-NEXT:    jne .LBB418_8
+; X86-NOBMI2-NEXT:  # %bb.7: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl (%edi,%eax,8), %ecx
+; X86-NOBMI2-NEXT:    movl 4(%edi,%eax,8), %esi
+; X86-NOBMI2-NEXT:  .LBB418_8: # %return
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    movl %esi, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_and_64_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %esi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB418_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %esi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB418_2: # %entry
+; X86-BMI2-NEXT:    notl %esi
+; X86-BMI2-NEXT:    notl %ebp
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB418_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %esi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB418_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    # kill: def $cl killed $cl killed $ecx def $ecx
+; X86-BMI2-NEXT:    incb %cl
+; X86-BMI2-NEXT:    movl $1, %ebp
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    xorl %ebx, %ebx
+; X86-BMI2-NEXT:    shldl %cl, %ebp, %ebx
+; X86-BMI2-NEXT:    shlxl %ecx, %ebp, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB418_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    movl %ebp, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB418_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebx, %edx
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    movl $123, %ecx
+; X86-BMI2-NEXT:    orl %edx, %eax
+; X86-BMI2-NEXT:    jne .LBB418_8
+; X86-BMI2-NEXT:  # %bb.7: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl (%edi,%eax,8), %ecx
+; X86-BMI2-NEXT:    movl 4(%edi,%eax,8), %esi
+; X86-BMI2-NEXT:  .LBB418_8: # %return
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    movl %esi, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_and_64_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movq $-2, %rdx
+; X64-NOBMI2-NEXT:    rolq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB418_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    andq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB418_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    leal 1(%rcx), %edx
+; X64-NOBMI2-NEXT:    movzbl %dl, %esi
+; X64-NOBMI2-NEXT:    movl $123, %edx
+; X64-NOBMI2-NEXT:    btq %rsi, %rax
+; X64-NOBMI2-NEXT:    jae .LBB418_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %return
+; X64-NOBMI2-NEXT:    movq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB418_3: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rcx,8), %rdx
+; X64-NOBMI2-NEXT:    movq %rdx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_and_64_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movq %rsi, %rcx
+; X64-BMI2-NEXT:    movq $-2, %rdx
+; X64-BMI2-NEXT:    rolq %cl, %rdx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB418_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rsi
+; X64-BMI2-NEXT:    andq %rdx, %rsi
+; X64-BMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB418_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    leal 1(%rcx), %edx
+; X64-BMI2-NEXT:    movzbl %dl, %esi
+; X64-BMI2-NEXT:    movl $123, %edx
+; X64-BMI2-NEXT:    btq %rsi, %rax
+; X64-BMI2-NEXT:    jae .LBB418_3
+; X64-BMI2-NEXT:  # %bb.4: # %return
+; X64-BMI2-NEXT:    movq %rdx, %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB418_3: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rcx,8), %rdx
+; X64-BMI2-NEXT:    movq %rdx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %not = xor i64 %shl, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %add = add i64 %c, 1
+  %shl1 = shl nuw i64 1, %add
+  %and = and i64 %0, %shl1
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_small_mask_and_64_gpr_brz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_small_mask_and_64_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    subl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $31, %ecx
+; X86-NOBMI2-NEXT:    movl $1, %eax
+; X86-NOBMI2-NEXT:    shll %cl, %eax
+; X86-NOBMI2-NEXT:    movl %eax, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-NOBMI2-NEXT:    movl $-2, %ebp
+; X86-NOBMI2-NEXT:    movl %ecx, (%esp) # 4-byte Spill
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    roll %cl, %ebp
+; X86-NOBMI2-NEXT:    movl $-1, %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB419_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %ebp, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %edi, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB419_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    testl %eax, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    je .LBB419_4
+; X86-NOBMI2-NEXT:  # %bb.3:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jmp .LBB419_5
+; X86-NOBMI2-NEXT:  .LBB419_4: # %if.then
+; X86-NOBMI2-NEXT:    movl (%esp), %ecx # 4-byte Reload
+; X86-NOBMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-NOBMI2-NEXT:  .LBB419_5: # %return
+; X86-NOBMI2-NEXT:    addl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_small_mask_and_64_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    subl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    andl $31, %ecx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %eax
+; X86-BMI2-NEXT:    movl %eax, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-BMI2-NEXT:    movl $-2, %ebp
+; X86-BMI2-NEXT:    movl %ecx, (%esp) # 4-byte Spill
+; X86-BMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-BMI2-NEXT:    roll %cl, %ebp
+; X86-BMI2-NEXT:    movl $-1, %edi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB419_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB419_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    testl %eax, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Folded Reload
+; X86-BMI2-NEXT:    je .LBB419_4
+; X86-BMI2-NEXT:  # %bb.3:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jmp .LBB419_5
+; X86-BMI2-NEXT:  .LBB419_4: # %if.then
+; X86-BMI2-NEXT:    movl (%esp), %ecx # 4-byte Reload
+; X86-BMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-BMI2-NEXT:  .LBB419_5: # %return
+; X86-BMI2-NEXT:    addl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_small_mask_and_64_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    andl $31, %esi
+; X64-NOBMI2-NEXT:    lock btrq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    jae .LBB419_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB419_1: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_small_mask_and_64_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $31, %esi
+; X64-BMI2-NEXT:    lock btrq %rsi, (%rdi)
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    jae .LBB419_1
+; X64-BMI2-NEXT:  # %bb.2: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB419_1: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 31
+  %shl = shl nuw nsw i64 1, %rem
+  %not = xor i64 %shl, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %and = and i64 %0, %shl
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %rem
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_mask0_and_64_gpr_brz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_and_64_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %esi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB420_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %esi, %ebp
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:  .LBB420_2: # %entry
+; X86-NOBMI2-NEXT:    notl %ebp
+; X86-NOBMI2-NEXT:    notl %esi
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB420_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %esi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB420_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl $1, %ebx
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    shldl %cl, %ebx, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %ebx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB420_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    movl %ebx, %ebp
+; X86-NOBMI2-NEXT:    xorl %ebx, %ebx
+; X86-NOBMI2-NEXT:  .LBB420_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    andl %ebx, %eax
+; X86-NOBMI2-NEXT:    movl $123, %ecx
+; X86-NOBMI2-NEXT:    orl %edx, %eax
+; X86-NOBMI2-NEXT:    jne .LBB420_8
+; X86-NOBMI2-NEXT:  # %bb.7: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl (%edi,%eax,8), %ecx
+; X86-NOBMI2-NEXT:    movl 4(%edi,%eax,8), %esi
+; X86-NOBMI2-NEXT:  .LBB420_8: # %return
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    movl %esi, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_and_64_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %esi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB420_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %esi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB420_2: # %entry
+; X86-BMI2-NEXT:    notl %esi
+; X86-BMI2-NEXT:    notl %ebp
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB420_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %esi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB420_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl $1, %ebp
+; X86-BMI2-NEXT:    xorl %ebx, %ebx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    shldl %cl, %ebp, %ebx
+; X86-BMI2-NEXT:    shlxl %ecx, %ebp, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB420_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    movl %ebp, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB420_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    andl %ebx, %edx
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    movl $123, %ecx
+; X86-BMI2-NEXT:    orl %edx, %eax
+; X86-BMI2-NEXT:    jne .LBB420_8
+; X86-BMI2-NEXT:  # %bb.7: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl (%edi,%eax,8), %ecx
+; X86-BMI2-NEXT:    movl 4(%edi,%eax,8), %esi
+; X86-BMI2-NEXT:  .LBB420_8: # %return
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    movl %esi, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_and_64_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $63, %eax
+; X64-NOBMI2-NEXT:    lock btrq %rax, (%rdi)
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    jae .LBB420_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB420_1: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_and_64_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $63, %eax
+; X64-BMI2-NEXT:    lock btrq %rax, (%rdi)
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    jae .LBB420_1
+; X64-BMI2-NEXT:  # %bb.2: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB420_1: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 63
+  %shl = shl nuw i64 1, %rem
+  %not = xor i64 %shl, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %shl1 = shl nuw i64 1, %c
+  %and = and i64 %0, %shl1
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_mask1_and_64_gpr_brz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_and_64_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %esi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB421_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %esi, %ebp
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:  .LBB421_2: # %entry
+; X86-NOBMI2-NEXT:    notl %ebp
+; X86-NOBMI2-NEXT:    notl %esi
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB421_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %esi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB421_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl $1, %ebx
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    shldl %cl, %ebx, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %ebx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB421_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    movl %ebx, %ebp
+; X86-NOBMI2-NEXT:    xorl %ebx, %ebx
+; X86-NOBMI2-NEXT:  .LBB421_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    andl %ebx, %eax
+; X86-NOBMI2-NEXT:    movl $123, %ecx
+; X86-NOBMI2-NEXT:    orl %edx, %eax
+; X86-NOBMI2-NEXT:    jne .LBB421_8
+; X86-NOBMI2-NEXT:  # %bb.7: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl (%edi,%eax,8), %ecx
+; X86-NOBMI2-NEXT:    movl 4(%edi,%eax,8), %esi
+; X86-NOBMI2-NEXT:  .LBB421_8: # %return
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    movl %esi, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_and_64_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %esi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB421_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %esi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB421_2: # %entry
+; X86-BMI2-NEXT:    notl %esi
+; X86-BMI2-NEXT:    notl %ebp
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB421_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %esi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB421_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl $1, %ebp
+; X86-BMI2-NEXT:    xorl %ebx, %ebx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    shldl %cl, %ebp, %ebx
+; X86-BMI2-NEXT:    shlxl %ecx, %ebp, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB421_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    movl %ebp, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB421_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    andl %ebx, %edx
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    movl $123, %ecx
+; X86-BMI2-NEXT:    orl %edx, %eax
+; X86-BMI2-NEXT:    jne .LBB421_8
+; X86-BMI2-NEXT:  # %bb.7: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl (%edi,%eax,8), %ecx
+; X86-BMI2-NEXT:    movl 4(%edi,%eax,8), %esi
+; X86-BMI2-NEXT:  .LBB421_8: # %return
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    movl %esi, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_and_64_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $63, %eax
+; X64-NOBMI2-NEXT:    lock btrq %rax, (%rdi)
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    jae .LBB421_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB421_1: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_and_64_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $63, %eax
+; X64-BMI2-NEXT:    lock btrq %rax, (%rdi)
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    jae .LBB421_1
+; X64-BMI2-NEXT:  # %bb.2: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB421_1: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %not = xor i64 %shl, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %rem = and i64 %c, 63
+  %shl1 = shl nuw i64 1, %rem
+  %and = and i64 %0, %shl1
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_mask01_and_64_gpr_brz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_and_64_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    subl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB422_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB422_2: # %entry
+; X86-NOBMI2-NEXT:    movl %ebp, (%esp) # 4-byte Spill
+; X86-NOBMI2-NEXT:    notl %ebp
+; X86-NOBMI2-NEXT:    movl %edi, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-NOBMI2-NEXT:    notl %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB422_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB422_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl {{[-0-9]+}}(%e{{[sb]}}p), %eax # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    andl (%esp), %edx # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    je .LBB422_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jmp .LBB422_7
+; X86-NOBMI2-NEXT:  .LBB422_6: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-NOBMI2-NEXT:  .LBB422_7: # %return
+; X86-NOBMI2-NEXT:    addl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_and_64_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    subl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB422_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB422_2: # %entry
+; X86-BMI2-NEXT:    movl %edi, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-BMI2-NEXT:    notl %edi
+; X86-BMI2-NEXT:    movl %ebp, (%esp) # 4-byte Spill
+; X86-BMI2-NEXT:    notl %ebp
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB422_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB422_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl (%esp), %eax # 4-byte Folded Reload
+; X86-BMI2-NEXT:    andl {{[-0-9]+}}(%e{{[sb]}}p), %edx # 4-byte Folded Reload
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    je .LBB422_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jmp .LBB422_7
+; X86-BMI2-NEXT:  .LBB422_6: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-BMI2-NEXT:  .LBB422_7: # %return
+; X86-BMI2-NEXT:    addl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_and_64_gpr_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $63, %eax
+; X64-NOBMI2-NEXT:    lock btrq %rax, (%rdi)
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    jae .LBB422_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB422_1: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_and_64_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $63, %eax
+; X64-BMI2-NEXT:    lock btrq %rax, (%rdi)
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    jae .LBB422_1
+; X64-BMI2-NEXT:  # %bb.2: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB422_1: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 63
+  %shl = shl nuw i64 1, %rem
+  %not = xor i64 %shl, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %and = and i64 %0, %shl
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_blsi_and_64_gpr_brz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_blsi_and_64_gpr_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    subl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    movl %ecx, %esi
+; X86-NOBMI2-NEXT:    negl %esi
+; X86-NOBMI2-NEXT:    sbbl %eax, %ebp
+; X86-NOBMI2-NEXT:    andl %eax, %ebp
+; X86-NOBMI2-NEXT:    andl %ecx, %esi
+; X86-NOBMI2-NEXT:    movl %ebp, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-NOBMI2-NEXT:    notl %ebp
+; X86-NOBMI2-NEXT:    movl %esi, (%esp) # 4-byte Spill
+; X86-NOBMI2-NEXT:    notl %esi
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB423_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %esi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB423_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl (%esp), %eax # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    andl {{[-0-9]+}}(%e{{[sb]}}p), %edx # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    je .LBB423_4
+; X86-NOBMI2-NEXT:  # %bb.3:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jmp .LBB423_5
+; X86-NOBMI2-NEXT:  .LBB423_4: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi,%ecx,8), %edx
+; X86-NOBMI2-NEXT:  .LBB423_5: # %return
+; X86-NOBMI2-NEXT:    addl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_blsi_and_64_gpr_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    subl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:    movl %ecx, %esi
+; X86-BMI2-NEXT:    negl %esi
+; X86-BMI2-NEXT:    sbbl %eax, %ebp
+; X86-BMI2-NEXT:    andl %eax, %ebp
+; X86-BMI2-NEXT:    andl %ecx, %esi
+; X86-BMI2-NEXT:    movl %ebp, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-BMI2-NEXT:    notl %ebp
+; X86-BMI2-NEXT:    movl %esi, (%esp) # 4-byte Spill
+; X86-BMI2-NEXT:    notl %esi
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB423_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %esi, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %ebp, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB423_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl (%esp), %eax # 4-byte Folded Reload
+; X86-BMI2-NEXT:    andl {{[-0-9]+}}(%e{{[sb]}}p), %edx # 4-byte Folded Reload
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    je .LBB423_4
+; X86-BMI2-NEXT:  # %bb.3:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jmp .LBB423_5
+; X86-BMI2-NEXT:  .LBB423_4: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%edi,%ecx,8), %edx
+; X86-BMI2-NEXT:  .LBB423_5: # %return
+; X86-BMI2-NEXT:    addl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_and_64_gpr_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    blsiq %rsi, %rdx
+; X64-BMI2-NEXT:    movq %rdx, %rcx
+; X64-BMI2-NEXT:    notq %rcx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB423_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %r8
+; X64-BMI2-NEXT:    andq %rcx, %r8
+; X64-BMI2-NEXT:    lock cmpxchgq %r8, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB423_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movl $123, %ecx
+; X64-BMI2-NEXT:    testq %rdx, %rax
+; X64-BMI2-NEXT:    je .LBB423_3
+; X64-BMI2-NEXT:  # %bb.4: # %return
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB423_3: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rcx
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %sub = sub i64 0, %c
+  %and = and i64 %sub, %c
+  %not = xor i64 %and, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %and3 = and i64 %0, %and
+  %tobool.not = icmp eq i64 %and3, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_and_64_gpr_brnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_and_64_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    subl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB424_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB424_2: # %entry
+; X86-NOBMI2-NEXT:    movl %ebp, (%esp) # 4-byte Spill
+; X86-NOBMI2-NEXT:    notl %ebp
+; X86-NOBMI2-NEXT:    movl %edi, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-NOBMI2-NEXT:    notl %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB424_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB424_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl {{[-0-9]+}}(%e{{[sb]}}p), %eax # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    andl (%esp), %edx # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    je .LBB424_5
+; X86-NOBMI2-NEXT:  # %bb.6: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-NOBMI2-NEXT:    jmp .LBB424_7
+; X86-NOBMI2-NEXT:  .LBB424_5:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB424_7: # %return
+; X86-NOBMI2-NEXT:    addl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_and_64_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    subl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB424_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB424_2: # %entry
+; X86-BMI2-NEXT:    movl %edi, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-BMI2-NEXT:    notl %edi
+; X86-BMI2-NEXT:    movl %ebp, (%esp) # 4-byte Spill
+; X86-BMI2-NEXT:    notl %ebp
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB424_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB424_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl (%esp), %eax # 4-byte Folded Reload
+; X86-BMI2-NEXT:    andl {{[-0-9]+}}(%e{{[sb]}}p), %edx # 4-byte Folded Reload
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    je .LBB424_5
+; X86-BMI2-NEXT:  # %bb.6: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-BMI2-NEXT:    jmp .LBB424_7
+; X86-BMI2-NEXT:  .LBB424_5:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB424_7: # %return
+; X86-BMI2-NEXT:    addl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_and_64_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $63, %eax
+; X64-NOBMI2-NEXT:    lock btrq %rax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB424_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB424_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_and_64_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $63, %eax
+; X64-BMI2-NEXT:    lock btrq %rax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB424_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB424_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %not = xor i64 %shl, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %and = and i64 %0, %shl
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl2_and_64_gpr_brnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl2_and_64_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    subl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $2, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB425_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB425_2: # %entry
+; X86-NOBMI2-NEXT:    movl %ebp, (%esp) # 4-byte Spill
+; X86-NOBMI2-NEXT:    notl %ebp
+; X86-NOBMI2-NEXT:    movl %edi, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-NOBMI2-NEXT:    notl %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB425_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB425_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl {{[-0-9]+}}(%e{{[sb]}}p), %eax # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    andl (%esp), %edx # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    je .LBB425_5
+; X86-NOBMI2-NEXT:  # %bb.6: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-NOBMI2-NEXT:    jmp .LBB425_7
+; X86-NOBMI2-NEXT:  .LBB425_5:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB425_7: # %return
+; X86-NOBMI2-NEXT:    addl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl2_and_64_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    subl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $2, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB425_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB425_2: # %entry
+; X86-BMI2-NEXT:    movl %edi, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-BMI2-NEXT:    notl %edi
+; X86-BMI2-NEXT:    movl %ebp, (%esp) # 4-byte Spill
+; X86-BMI2-NEXT:    notl %ebp
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB425_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB425_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl (%esp), %eax # 4-byte Folded Reload
+; X86-BMI2-NEXT:    andl {{[-0-9]+}}(%e{{[sb]}}p), %edx # 4-byte Folded Reload
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    je .LBB425_5
+; X86-BMI2-NEXT:  # %bb.6: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-BMI2-NEXT:    jmp .LBB425_7
+; X86-BMI2-NEXT:  .LBB425_5:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB425_7: # %return
+; X86-BMI2-NEXT:    addl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl2_and_64_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movl $2, %edx
+; X64-NOBMI2-NEXT:    shlq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq %rdx, %rsi
+; X64-NOBMI2-NEXT:    notq %rsi
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB425_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %r8
+; X64-NOBMI2-NEXT:    andq %rsi, %r8
+; X64-NOBMI2-NEXT:    lock cmpxchgq %r8, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB425_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    testq %rdx, %rax
+; X64-NOBMI2-NEXT:    je .LBB425_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rcx,8), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB425_3:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl2_and_64_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl $2, %eax
+; X64-BMI2-NEXT:    shlxq %rsi, %rax, %rcx
+; X64-BMI2-NEXT:    movq %rcx, %rdx
+; X64-BMI2-NEXT:    notq %rdx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB425_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %r8
+; X64-BMI2-NEXT:    andq %rdx, %r8
+; X64-BMI2-NEXT:    lock cmpxchgq %r8, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB425_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    testq %rcx, %rax
+; X64-BMI2-NEXT:    je .LBB425_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB425_3:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl i64 2, %c
+  %not = xor i64 %shl, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %and = and i64 %0, %shl
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_neq_and_64_gpr_brnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_and_64_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %esi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB426_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %esi, %ebp
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:  .LBB426_2: # %entry
+; X86-NOBMI2-NEXT:    notl %ebp
+; X86-NOBMI2-NEXT:    notl %esi
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB426_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %esi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB426_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    incb %cl
+; X86-NOBMI2-NEXT:    movl $1, %ebx
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %ebx, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %ebx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB426_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    movl %ebx, %ebp
+; X86-NOBMI2-NEXT:    xorl %ebx, %ebx
+; X86-NOBMI2-NEXT:  .LBB426_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    andl %ebx, %eax
+; X86-NOBMI2-NEXT:    orl %edx, %eax
+; X86-NOBMI2-NEXT:    je .LBB426_7
+; X86-NOBMI2-NEXT:  # %bb.8: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi,%ecx,8), %esi
+; X86-NOBMI2-NEXT:    jmp .LBB426_9
+; X86-NOBMI2-NEXT:  .LBB426_7:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB426_9: # %return
+; X86-NOBMI2-NEXT:    movl %esi, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_and_64_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %esi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB426_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %esi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB426_2: # %entry
+; X86-BMI2-NEXT:    notl %esi
+; X86-BMI2-NEXT:    notl %ebp
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB426_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %esi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB426_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    # kill: def $cl killed $cl killed $ecx def $ecx
+; X86-BMI2-NEXT:    incb %cl
+; X86-BMI2-NEXT:    movl $1, %ebp
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    xorl %ebx, %ebx
+; X86-BMI2-NEXT:    shldl %cl, %ebp, %ebx
+; X86-BMI2-NEXT:    shlxl %ecx, %ebp, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB426_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    movl %ebp, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB426_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebx, %edx
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    orl %edx, %eax
+; X86-BMI2-NEXT:    je .LBB426_7
+; X86-BMI2-NEXT:  # %bb.8: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%edi,%ecx,8), %esi
+; X86-BMI2-NEXT:    jmp .LBB426_9
+; X86-BMI2-NEXT:  .LBB426_7:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB426_9: # %return
+; X86-BMI2-NEXT:    movl %esi, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_and_64_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq %rsi, %rcx
+; X64-NOBMI2-NEXT:    movq $-2, %rdx
+; X64-NOBMI2-NEXT:    rolq %cl, %rdx
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB426_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rsi
+; X64-NOBMI2-NEXT:    andq %rdx, %rsi
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB426_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    leal 1(%rcx), %edx
+; X64-NOBMI2-NEXT:    movzbl %dl, %edx
+; X64-NOBMI2-NEXT:    btq %rdx, %rax
+; X64-NOBMI2-NEXT:    jae .LBB426_3
+; X64-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rcx,8), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB426_3:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_and_64_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movq %rsi, %rcx
+; X64-BMI2-NEXT:    movq $-2, %rdx
+; X64-BMI2-NEXT:    rolq %cl, %rdx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB426_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rsi
+; X64-BMI2-NEXT:    andq %rdx, %rsi
+; X64-BMI2-NEXT:    lock cmpxchgq %rsi, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB426_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    leal 1(%rcx), %edx
+; X64-BMI2-NEXT:    movzbl %dl, %edx
+; X64-BMI2-NEXT:    btq %rdx, %rax
+; X64-BMI2-NEXT:    jae .LBB426_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rcx,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB426_3:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %not = xor i64 %shl, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %add = add i64 %c, 1
+  %shl1 = shl nuw i64 1, %add
+  %and = and i64 %0, %shl1
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_small_mask_and_64_gpr_brnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_small_mask_and_64_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    subl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    andl $31, %ecx
+; X86-NOBMI2-NEXT:    movl $1, %eax
+; X86-NOBMI2-NEXT:    shll %cl, %eax
+; X86-NOBMI2-NEXT:    movl %eax, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-NOBMI2-NEXT:    movl $-2, %ebp
+; X86-NOBMI2-NEXT:    movl %ecx, (%esp) # 4-byte Spill
+; X86-NOBMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-NOBMI2-NEXT:    roll %cl, %ebp
+; X86-NOBMI2-NEXT:    movl $-1, %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB427_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %ebp, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %edi, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB427_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    testl %eax, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    je .LBB427_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movl (%esp), %ecx # 4-byte Reload
+; X86-NOBMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-NOBMI2-NEXT:    jmp .LBB427_5
+; X86-NOBMI2-NEXT:  .LBB427_3:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB427_5: # %return
+; X86-NOBMI2-NEXT:    addl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_small_mask_and_64_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    subl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    andl $31, %ecx
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %eax
+; X86-BMI2-NEXT:    movl %eax, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-BMI2-NEXT:    movl $-2, %ebp
+; X86-BMI2-NEXT:    movl %ecx, (%esp) # 4-byte Spill
+; X86-BMI2-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-BMI2-NEXT:    roll %cl, %ebp
+; X86-BMI2-NEXT:    movl $-1, %edi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB427_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB427_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    testl %eax, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Folded Reload
+; X86-BMI2-NEXT:    je .LBB427_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movl (%esp), %ecx # 4-byte Reload
+; X86-BMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-BMI2-NEXT:    jmp .LBB427_5
+; X86-BMI2-NEXT:  .LBB427_3:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB427_5: # %return
+; X86-BMI2-NEXT:    addl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_small_mask_and_64_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    andl $31, %esi
+; X64-NOBMI2-NEXT:    lock btrq %rsi, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB427_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB427_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_small_mask_and_64_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    andl $31, %esi
+; X64-BMI2-NEXT:    lock btrq %rsi, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB427_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB427_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 31
+  %shl = shl nuw nsw i64 1, %rem
+  %not = xor i64 %shl, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %and = and i64 %0, %shl
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %rem
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_mask0_and_64_gpr_brnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask0_and_64_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %esi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB428_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %esi, %ebp
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:  .LBB428_2: # %entry
+; X86-NOBMI2-NEXT:    notl %ebp
+; X86-NOBMI2-NEXT:    notl %esi
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB428_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %esi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB428_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl $1, %ebx
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    shldl %cl, %ebx, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %ebx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB428_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    movl %ebx, %ebp
+; X86-NOBMI2-NEXT:    xorl %ebx, %ebx
+; X86-NOBMI2-NEXT:  .LBB428_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    andl %ebx, %eax
+; X86-NOBMI2-NEXT:    orl %edx, %eax
+; X86-NOBMI2-NEXT:    je .LBB428_7
+; X86-NOBMI2-NEXT:  # %bb.8: # %if.then
+; X86-NOBMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi,%ecx,8), %esi
+; X86-NOBMI2-NEXT:    jmp .LBB428_9
+; X86-NOBMI2-NEXT:  .LBB428_7:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB428_9: # %return
+; X86-NOBMI2-NEXT:    movl %esi, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask0_and_64_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %esi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB428_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %esi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB428_2: # %entry
+; X86-BMI2-NEXT:    notl %esi
+; X86-BMI2-NEXT:    notl %ebp
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB428_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %esi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB428_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl $1, %ebp
+; X86-BMI2-NEXT:    xorl %ebx, %ebx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    shldl %cl, %ebp, %ebx
+; X86-BMI2-NEXT:    shlxl %ecx, %ebp, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB428_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    movl %ebp, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB428_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebx, %edx
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    orl %edx, %eax
+; X86-BMI2-NEXT:    je .LBB428_7
+; X86-BMI2-NEXT:  # %bb.8: # %if.then
+; X86-BMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%edi,%ecx,8), %edx
+; X86-BMI2-NEXT:    jmp .LBB428_9
+; X86-BMI2-NEXT:  .LBB428_7:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:  .LBB428_9: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask0_and_64_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $63, %eax
+; X64-NOBMI2-NEXT:    lock btrq %rax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB428_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB428_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask0_and_64_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $63, %eax
+; X64-BMI2-NEXT:    lock btrq %rax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB428_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB428_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 63
+  %shl = shl nuw i64 1, %rem
+  %not = xor i64 %shl, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %shl1 = shl nuw i64 1, %c
+  %and = and i64 %0, %shl1
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_mask1_and_64_gpr_brnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask1_and_64_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    movl $1, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %esi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %esi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB429_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %esi, %ebp
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:  .LBB429_2: # %entry
+; X86-NOBMI2-NEXT:    notl %ebp
+; X86-NOBMI2-NEXT:    notl %esi
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB429_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %esi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB429_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    movl $1, %ebx
+; X86-NOBMI2-NEXT:    xorl %esi, %esi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    shldl %cl, %ebx, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %ebx
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB429_6
+; X86-NOBMI2-NEXT:  # %bb.5:
+; X86-NOBMI2-NEXT:    movl %ebx, %ebp
+; X86-NOBMI2-NEXT:    xorl %ebx, %ebx
+; X86-NOBMI2-NEXT:  .LBB429_6: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl %ebp, %edx
+; X86-NOBMI2-NEXT:    andl %ebx, %eax
+; X86-NOBMI2-NEXT:    orl %edx, %eax
+; X86-NOBMI2-NEXT:    je .LBB429_7
+; X86-NOBMI2-NEXT:  # %bb.8: # %if.then
+; X86-NOBMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi,%ecx,8), %esi
+; X86-NOBMI2-NEXT:    jmp .LBB429_9
+; X86-NOBMI2-NEXT:  .LBB429_7:
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB429_9: # %return
+; X86-NOBMI2-NEXT:    movl %esi, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask1_and_64_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %esi, %esi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %esi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB429_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %esi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB429_2: # %entry
+; X86-BMI2-NEXT:    notl %esi
+; X86-BMI2-NEXT:    notl %ebp
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB429_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %esi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB429_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    movl $1, %ebp
+; X86-BMI2-NEXT:    xorl %ebx, %ebx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    shldl %cl, %ebp, %ebx
+; X86-BMI2-NEXT:    shlxl %ecx, %ebp, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB429_6
+; X86-BMI2-NEXT:  # %bb.5:
+; X86-BMI2-NEXT:    movl %ebp, %ebx
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB429_6: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl %ebx, %edx
+; X86-BMI2-NEXT:    andl %ebp, %eax
+; X86-BMI2-NEXT:    orl %edx, %eax
+; X86-BMI2-NEXT:    je .LBB429_7
+; X86-BMI2-NEXT:  # %bb.8: # %if.then
+; X86-BMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%edi,%ecx,8), %edx
+; X86-BMI2-NEXT:    jmp .LBB429_9
+; X86-BMI2-NEXT:  .LBB429_7:
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:  .LBB429_9: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask1_and_64_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $63, %eax
+; X64-NOBMI2-NEXT:    lock btrq %rax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB429_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB429_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask1_and_64_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $63, %eax
+; X64-BMI2-NEXT:    lock btrq %rax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB429_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB429_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %shl = shl nuw i64 1, %c
+  %not = xor i64 %shl, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %rem = and i64 %c, 63
+  %shl1 = shl nuw i64 1, %rem
+  %and = and i64 %0, %shl1
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_mask01_and_64_gpr_brnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_shl1_mask01_and_64_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    subl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl $1, %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    shldl %cl, %edi, %ebp
+; X86-NOBMI2-NEXT:    shll %cl, %edi
+; X86-NOBMI2-NEXT:    testb $32, %cl
+; X86-NOBMI2-NEXT:    je .LBB430_2
+; X86-NOBMI2-NEXT:  # %bb.1:
+; X86-NOBMI2-NEXT:    movl %edi, %ebp
+; X86-NOBMI2-NEXT:    xorl %edi, %edi
+; X86-NOBMI2-NEXT:  .LBB430_2: # %entry
+; X86-NOBMI2-NEXT:    movl %ebp, (%esp) # 4-byte Spill
+; X86-NOBMI2-NEXT:    notl %ebp
+; X86-NOBMI2-NEXT:    movl %edi, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-NOBMI2-NEXT:    notl %edi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB430_3: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %edi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB430_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl {{[-0-9]+}}(%e{{[sb]}}p), %eax # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    andl (%esp), %edx # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    je .LBB430_5
+; X86-NOBMI2-NEXT:  # %bb.6: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-NOBMI2-NEXT:    jmp .LBB430_7
+; X86-NOBMI2-NEXT:  .LBB430_5:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB430_7: # %return
+; X86-NOBMI2-NEXT:    addl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_mask01_and_64_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    subl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl $1, %eax
+; X86-BMI2-NEXT:    xorl %edi, %edi
+; X86-BMI2-NEXT:    shldl %cl, %eax, %edi
+; X86-BMI2-NEXT:    shlxl %ecx, %eax, %ebp
+; X86-BMI2-NEXT:    testb $32, %cl
+; X86-BMI2-NEXT:    je .LBB430_2
+; X86-BMI2-NEXT:  # %bb.1:
+; X86-BMI2-NEXT:    movl %ebp, %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:  .LBB430_2: # %entry
+; X86-BMI2-NEXT:    movl %edi, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-BMI2-NEXT:    notl %edi
+; X86-BMI2-NEXT:    movl %ebp, (%esp) # 4-byte Spill
+; X86-BMI2-NEXT:    notl %ebp
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB430_3: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %ebp, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %edi, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB430_3
+; X86-BMI2-NEXT:  # %bb.4: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl (%esp), %eax # 4-byte Folded Reload
+; X86-BMI2-NEXT:    andl {{[-0-9]+}}(%e{{[sb]}}p), %edx # 4-byte Folded Reload
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    je .LBB430_5
+; X86-BMI2-NEXT:  # %bb.6: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%esi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%esi,%ecx,8), %edx
+; X86-BMI2-NEXT:    jmp .LBB430_7
+; X86-BMI2-NEXT:  .LBB430_5:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB430_7: # %return
+; X86-BMI2-NEXT:    addl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_mask01_and_64_gpr_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movl %esi, %eax
+; X64-NOBMI2-NEXT:    andl $63, %eax
+; X64-NOBMI2-NEXT:    lock btrq %rax, (%rdi)
+; X64-NOBMI2-NEXT:    jae .LBB430_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB430_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_mask01_and_64_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movl %esi, %eax
+; X64-BMI2-NEXT:    andl $63, %eax
+; X64-BMI2-NEXT:    lock btrq %rax, (%rdi)
+; X64-BMI2-NEXT:    jae .LBB430_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB430_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %rem = and i64 %c, 63
+  %shl = shl nuw i64 1, %rem
+  %not = xor i64 %shl, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %and = and i64 %0, %shl
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_blsi_and_64_gpr_brnz(ptr %v, i64 %c) {
+; X86-NOBMI2-LABEL: atomic_blsi_and_64_gpr_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    pushl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    subl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -20
+; X86-NOBMI2-NEXT:    .cfi_offset %edi, -16
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-NOBMI2-NEXT:    xorl %ebp, %ebp
+; X86-NOBMI2-NEXT:    movl %ecx, %esi
+; X86-NOBMI2-NEXT:    negl %esi
+; X86-NOBMI2-NEXT:    sbbl %eax, %ebp
+; X86-NOBMI2-NEXT:    andl %eax, %ebp
+; X86-NOBMI2-NEXT:    andl %ecx, %esi
+; X86-NOBMI2-NEXT:    movl %ebp, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-NOBMI2-NEXT:    notl %ebp
+; X86-NOBMI2-NEXT:    movl %esi, (%esp) # 4-byte Spill
+; X86-NOBMI2-NEXT:    notl %esi
+; X86-NOBMI2-NEXT:    movl (%edi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB431_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl %esi, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    andl %ebp, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-NOBMI2-NEXT:    jne .LBB431_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl (%esp), %eax # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    andl {{[-0-9]+}}(%e{{[sb]}}p), %edx # 4-byte Folded Reload
+; X86-NOBMI2-NEXT:    orl %eax, %edx
+; X86-NOBMI2-NEXT:    je .LBB431_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NOBMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-NOBMI2-NEXT:    movl 4(%edi,%ecx,8), %edx
+; X86-NOBMI2-NEXT:    jmp .LBB431_5
+; X86-NOBMI2-NEXT:  .LBB431_3:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB431_5: # %return
+; X86-NOBMI2-NEXT:    addl $8, %esp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-NOBMI2-NEXT:    popl %edi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebp
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_blsi_and_64_gpr_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    pushl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    subl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 28
+; X86-BMI2-NEXT:    .cfi_offset %esi, -20
+; X86-BMI2-NEXT:    .cfi_offset %edi, -16
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebp, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; X86-BMI2-NEXT:    xorl %ebp, %ebp
+; X86-BMI2-NEXT:    movl %ecx, %esi
+; X86-BMI2-NEXT:    negl %esi
+; X86-BMI2-NEXT:    sbbl %eax, %ebp
+; X86-BMI2-NEXT:    andl %eax, %ebp
+; X86-BMI2-NEXT:    andl %ecx, %esi
+; X86-BMI2-NEXT:    movl %ebp, {{[-0-9]+}}(%e{{[sb]}}p) # 4-byte Spill
+; X86-BMI2-NEXT:    notl %ebp
+; X86-BMI2-NEXT:    movl %esi, (%esp) # 4-byte Spill
+; X86-BMI2-NEXT:    notl %esi
+; X86-BMI2-NEXT:    movl (%edi), %eax
+; X86-BMI2-NEXT:    movl 4(%edi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB431_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl %esi, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    andl %ebp, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%edi)
+; X86-BMI2-NEXT:    jne .LBB431_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl (%esp), %eax # 4-byte Folded Reload
+; X86-BMI2-NEXT:    andl {{[-0-9]+}}(%e{{[sb]}}p), %edx # 4-byte Folded Reload
+; X86-BMI2-NEXT:    orl %eax, %edx
+; X86-BMI2-NEXT:    je .LBB431_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-BMI2-NEXT:    movl (%edi,%ecx,8), %eax
+; X86-BMI2-NEXT:    movl 4(%edi,%ecx,8), %edx
+; X86-BMI2-NEXT:    jmp .LBB431_5
+; X86-BMI2-NEXT:  .LBB431_3:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB431_5: # %return
+; X86-BMI2-NEXT:    addl $8, %esp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 20
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 16
+; X86-BMI2-NEXT:    popl %edi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebp
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-BMI2-LABEL: atomic_blsi_and_64_gpr_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    blsiq %rsi, %rcx
+; X64-BMI2-NEXT:    movq %rcx, %rdx
+; X64-BMI2-NEXT:    notq %rdx
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB431_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %r8
+; X64-BMI2-NEXT:    andq %rdx, %r8
+; X64-BMI2-NEXT:    lock cmpxchgq %r8, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB431_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    testq %rcx, %rax
+; X64-BMI2-NEXT:    je .LBB431_3
+; X64-BMI2-NEXT:  # %bb.4: # %if.then
+; X64-BMI2-NEXT:    movq (%rdi,%rsi,8), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB431_3:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %sub = sub i64 0, %c
+  %and = and i64 %sub, %c
+  %not = xor i64 %and, -1
+  %0 = atomicrmw and ptr %v, i64 %not monotonic, align 8
+  %and3 = and i64 %0, %and
+  %tobool.not = icmp eq i64 %and3, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 %c
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_xor_64_const_val(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_xor_64_const_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB432_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl $16, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB432_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl $16, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_xor_64_const_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB432_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl $16, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB432_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl $16, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_xor_64_const_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btcq $4, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    shlq $4, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_xor_64_const_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btcq $4, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlq $4, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw xor ptr %v, i64 16 monotonic, align 8
+  %and = and i64 %0, 16
+  ret i64 %and
+}
+
+define i64 @atomic_shl1_neq_xor_64_const_val(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_xor_64_const_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB433_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl $16, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB433_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl $32, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_xor_64_const_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB433_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl $16, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB433_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl $32, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_xor_64_const_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB433_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rcx
+; X64-NOBMI2-NEXT:    xorq $16, %rcx
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB433_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    andl $32, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_xor_64_const_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB433_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rcx
+; X64-BMI2-NEXT:    xorq $16, %rcx
+; X64-BMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB433_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    andl $32, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw xor ptr %v, i64 16 monotonic, align 8
+  %and = and i64 %0, 32
+  ret i64 %and
+}
+
+define i64 @atomic_shl1_xor_64_const_valz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_xor_64_const_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB434_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl $16, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB434_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    testb $16, %al
+; X86-NOBMI2-NEXT:    sete %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_xor_64_const_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB434_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl $16, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB434_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    testb $16, %al
+; X86-BMI2-NEXT:    sete %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_xor_64_const_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB434_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rcx
+; X64-NOBMI2-NEXT:    xorq $16, %rcx
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB434_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    testb $16, %al
+; X64-NOBMI2-NEXT:    sete %cl
+; X64-NOBMI2-NEXT:    movq %rcx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_xor_64_const_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB434_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rcx
+; X64-BMI2-NEXT:    xorq $16, %rcx
+; X64-BMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB434_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    testb $16, %al
+; X64-BMI2-NEXT:    sete %cl
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw xor ptr %v, i64 16 monotonic, align 8
+  %1 = lshr i64 %0, 4
+  %2 = and i64 %1, 1
+  %lnot.ext = xor i64 %2, 1
+  ret i64 %lnot.ext
+}
+
+define i64 @atomic_shl1_neq_xor_64_const_valz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_xor_64_const_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB435_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl $16, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB435_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    testb $32, %al
+; X86-NOBMI2-NEXT:    sete %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_xor_64_const_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB435_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl $16, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB435_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    testb $32, %al
+; X86-BMI2-NEXT:    sete %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_xor_64_const_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB435_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rcx
+; X64-NOBMI2-NEXT:    xorq $16, %rcx
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB435_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    testb $32, %al
+; X64-NOBMI2-NEXT:    sete %cl
+; X64-NOBMI2-NEXT:    movq %rcx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_xor_64_const_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB435_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rcx
+; X64-BMI2-NEXT:    xorq $16, %rcx
+; X64-BMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB435_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    testb $32, %al
+; X64-BMI2-NEXT:    sete %cl
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw xor ptr %v, i64 16 monotonic, align 8
+  %1 = lshr i64 %0, 5
+  %2 = and i64 %1, 1
+  %lnot.ext = xor i64 %2, 1
+  ret i64 %lnot.ext
+}
+
+define i64 @atomic_shl1_xor_64_const_valnz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_xor_64_const_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB436_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl $16, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB436_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    shrl $4, %eax
+; X86-NOBMI2-NEXT:    andl $1, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_xor_64_const_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB436_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl $16, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB436_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    shrl $4, %eax
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_xor_64_const_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB436_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rcx
+; X64-NOBMI2-NEXT:    xorq $16, %rcx
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB436_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    shrl $4, %eax
+; X64-NOBMI2-NEXT:    andl $1, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_xor_64_const_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB436_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rcx
+; X64-BMI2-NEXT:    xorq $16, %rcx
+; X64-BMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB436_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrl $4, %eax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw xor ptr %v, i64 16 monotonic, align 8
+  %1 = lshr i64 %0, 4
+  %lnot.ext = and i64 %1, 1
+  ret i64 %lnot.ext
+}
+
+define i64 @atomic_shl1_neq_xor_64_const_valnz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_xor_64_const_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB437_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl $16, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB437_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    shrl $5, %eax
+; X86-NOBMI2-NEXT:    andl $1, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_xor_64_const_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB437_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl $16, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB437_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    shrl $5, %eax
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_xor_64_const_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB437_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rcx
+; X64-NOBMI2-NEXT:    xorq $16, %rcx
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB437_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    shrl $5, %eax
+; X64-NOBMI2-NEXT:    andl $1, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_xor_64_const_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB437_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rcx
+; X64-BMI2-NEXT:    xorq $16, %rcx
+; X64-BMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB437_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrl $5, %eax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw xor ptr %v, i64 16 monotonic, align 8
+  %1 = lshr i64 %0, 5
+  %lnot.ext = and i64 %1, 1
+  ret i64 %lnot.ext
+}
+
+define i64 @atomic_shl1_xor_64_const_br(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_xor_64_const_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB438_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl $16, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB438_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    testb $16, %al
+; X86-NOBMI2-NEXT:    jne .LBB438_4
+; X86-NOBMI2-NEXT:  # %bb.3:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jmp .LBB438_5
+; X86-NOBMI2-NEXT:  .LBB438_4: # %if.then
+; X86-NOBMI2-NEXT:    movl 32(%esi), %eax
+; X86-NOBMI2-NEXT:    movl 36(%esi), %edx
+; X86-NOBMI2-NEXT:  .LBB438_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_xor_64_const_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB438_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl $16, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB438_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    testb $16, %al
+; X86-BMI2-NEXT:    jne .LBB438_4
+; X86-BMI2-NEXT:  # %bb.3:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jmp .LBB438_5
+; X86-BMI2-NEXT:  .LBB438_4: # %if.then
+; X86-BMI2-NEXT:    movl 32(%esi), %eax
+; X86-BMI2-NEXT:    movl 36(%esi), %edx
+; X86-BMI2-NEXT:  .LBB438_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_xor_64_const_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btcq $4, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    shlq $4, %rax
+; X64-NOBMI2-NEXT:    je .LBB438_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movq 32(%rdi), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB438_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_xor_64_const_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btcq $4, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlq $4, %rax
+; X64-BMI2-NEXT:    je .LBB438_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movq 32(%rdi), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB438_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw xor ptr %v, i64 16 monotonic, align 8
+  %and = and i64 %0, 16
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 4
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_neq_xor_64_const_br(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_xor_64_const_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB439_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl $16, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB439_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    testb $32, %al
+; X86-NOBMI2-NEXT:    jne .LBB439_4
+; X86-NOBMI2-NEXT:  # %bb.3:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jmp .LBB439_5
+; X86-NOBMI2-NEXT:  .LBB439_4: # %if.then
+; X86-NOBMI2-NEXT:    movl 32(%esi), %eax
+; X86-NOBMI2-NEXT:    movl 36(%esi), %edx
+; X86-NOBMI2-NEXT:  .LBB439_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_xor_64_const_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB439_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl $16, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB439_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    testb $32, %al
+; X86-BMI2-NEXT:    jne .LBB439_4
+; X86-BMI2-NEXT:  # %bb.3:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jmp .LBB439_5
+; X86-BMI2-NEXT:  .LBB439_4: # %if.then
+; X86-BMI2-NEXT:    movl 32(%esi), %eax
+; X86-BMI2-NEXT:    movl 36(%esi), %edx
+; X86-BMI2-NEXT:  .LBB439_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_xor_64_const_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB439_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rcx
+; X64-NOBMI2-NEXT:    xorq $16, %rcx
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB439_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movl $123, %ecx
+; X64-NOBMI2-NEXT:    testb $32, %al
+; X64-NOBMI2-NEXT:    je .LBB439_4
+; X64-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X64-NOBMI2-NEXT:    movq 32(%rdi), %rcx
+; X64-NOBMI2-NEXT:  .LBB439_4: # %return
+; X64-NOBMI2-NEXT:    movq %rcx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_xor_64_const_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB439_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rcx
+; X64-BMI2-NEXT:    xorq $16, %rcx
+; X64-BMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB439_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movl $123, %ecx
+; X64-BMI2-NEXT:    testb $32, %al
+; X64-BMI2-NEXT:    je .LBB439_4
+; X64-BMI2-NEXT:  # %bb.3: # %if.then
+; X64-BMI2-NEXT:    movq 32(%rdi), %rcx
+; X64-BMI2-NEXT:  .LBB439_4: # %return
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw xor ptr %v, i64 16 monotonic, align 8
+  %and = and i64 %0, 32
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 4
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_xor_64_const_brz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_xor_64_const_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB440_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl $16, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB440_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    testb $16, %al
+; X86-NOBMI2-NEXT:    jne .LBB440_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movl 32(%esi), %eax
+; X86-NOBMI2-NEXT:    movl 36(%esi), %edx
+; X86-NOBMI2-NEXT:    jmp .LBB440_5
+; X86-NOBMI2-NEXT:  .LBB440_3:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB440_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_xor_64_const_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB440_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl $16, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB440_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    testb $16, %al
+; X86-BMI2-NEXT:    jne .LBB440_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movl 32(%esi), %eax
+; X86-BMI2-NEXT:    movl 36(%esi), %edx
+; X86-BMI2-NEXT:    jmp .LBB440_5
+; X86-BMI2-NEXT:  .LBB440_3:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB440_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_xor_64_const_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btcq $4, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    shlq $4, %rax
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    je .LBB440_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB440_1: # %if.then
+; X64-NOBMI2-NEXT:    movq 32(%rdi), %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_xor_64_const_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btcq $4, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlq $4, %rax
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    je .LBB440_1
+; X64-BMI2-NEXT:  # %bb.2: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB440_1: # %if.then
+; X64-BMI2-NEXT:    movq 32(%rdi), %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw xor ptr %v, i64 16 monotonic, align 8
+  %and = and i64 %0, 16
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 4
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_neq_xor_64_const_brz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_xor_64_const_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB441_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl $16, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB441_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    testb $32, %al
+; X86-NOBMI2-NEXT:    jne .LBB441_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movl 32(%esi), %eax
+; X86-NOBMI2-NEXT:    movl 36(%esi), %edx
+; X86-NOBMI2-NEXT:    jmp .LBB441_5
+; X86-NOBMI2-NEXT:  .LBB441_3:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB441_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_xor_64_const_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB441_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl $16, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB441_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    testb $32, %al
+; X86-BMI2-NEXT:    jne .LBB441_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movl 32(%esi), %eax
+; X86-BMI2-NEXT:    movl 36(%esi), %edx
+; X86-BMI2-NEXT:    jmp .LBB441_5
+; X86-BMI2-NEXT:  .LBB441_3:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB441_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_xor_64_const_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB441_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rcx
+; X64-NOBMI2-NEXT:    xorq $16, %rcx
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB441_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movl $123, %ecx
+; X64-NOBMI2-NEXT:    testb $32, %al
+; X64-NOBMI2-NEXT:    jne .LBB441_4
+; X64-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X64-NOBMI2-NEXT:    movq 32(%rdi), %rcx
+; X64-NOBMI2-NEXT:  .LBB441_4: # %return
+; X64-NOBMI2-NEXT:    movq %rcx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_xor_64_const_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB441_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rcx
+; X64-BMI2-NEXT:    xorq $16, %rcx
+; X64-BMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB441_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movl $123, %ecx
+; X64-BMI2-NEXT:    testb $32, %al
+; X64-BMI2-NEXT:    jne .LBB441_4
+; X64-BMI2-NEXT:  # %bb.3: # %if.then
+; X64-BMI2-NEXT:    movq 32(%rdi), %rcx
+; X64-BMI2-NEXT:  .LBB441_4: # %return
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw xor ptr %v, i64 16 monotonic, align 8
+  %and = and i64 %0, 32
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 4
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_xor_64_const_brnz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_xor_64_const_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB442_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl $16, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB442_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    testb $16, %al
+; X86-NOBMI2-NEXT:    jne .LBB442_4
+; X86-NOBMI2-NEXT:  # %bb.3:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jmp .LBB442_5
+; X86-NOBMI2-NEXT:  .LBB442_4: # %if.then
+; X86-NOBMI2-NEXT:    movl 32(%esi), %eax
+; X86-NOBMI2-NEXT:    movl 36(%esi), %edx
+; X86-NOBMI2-NEXT:  .LBB442_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_xor_64_const_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB442_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl $16, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB442_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    testb $16, %al
+; X86-BMI2-NEXT:    jne .LBB442_4
+; X86-BMI2-NEXT:  # %bb.3:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jmp .LBB442_5
+; X86-BMI2-NEXT:  .LBB442_4: # %if.then
+; X86-BMI2-NEXT:    movl 32(%esi), %eax
+; X86-BMI2-NEXT:    movl 36(%esi), %edx
+; X86-BMI2-NEXT:  .LBB442_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_xor_64_const_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btcq $4, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    shlq $4, %rax
+; X64-NOBMI2-NEXT:    je .LBB442_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movq 32(%rdi), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB442_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_xor_64_const_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btcq $4, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlq $4, %rax
+; X64-BMI2-NEXT:    je .LBB442_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movq 32(%rdi), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB442_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw xor ptr %v, i64 16 monotonic, align 8
+  %and = and i64 %0, 16
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 4
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_neq_xor_64_const_brnz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_xor_64_const_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB443_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    xorl $16, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB443_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    testb $32, %al
+; X86-NOBMI2-NEXT:    jne .LBB443_4
+; X86-NOBMI2-NEXT:  # %bb.3:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jmp .LBB443_5
+; X86-NOBMI2-NEXT:  .LBB443_4: # %if.then
+; X86-NOBMI2-NEXT:    movl 32(%esi), %eax
+; X86-NOBMI2-NEXT:    movl 36(%esi), %edx
+; X86-NOBMI2-NEXT:  .LBB443_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_xor_64_const_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB443_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    xorl $16, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB443_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    testb $32, %al
+; X86-BMI2-NEXT:    jne .LBB443_4
+; X86-BMI2-NEXT:  # %bb.3:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jmp .LBB443_5
+; X86-BMI2-NEXT:  .LBB443_4: # %if.then
+; X86-BMI2-NEXT:    movl 32(%esi), %eax
+; X86-BMI2-NEXT:    movl 36(%esi), %edx
+; X86-BMI2-NEXT:  .LBB443_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_xor_64_const_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB443_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rcx
+; X64-NOBMI2-NEXT:    xorq $16, %rcx
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB443_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movl $123, %ecx
+; X64-NOBMI2-NEXT:    testb $32, %al
+; X64-NOBMI2-NEXT:    je .LBB443_4
+; X64-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X64-NOBMI2-NEXT:    movq 32(%rdi), %rcx
+; X64-NOBMI2-NEXT:  .LBB443_4: # %return
+; X64-NOBMI2-NEXT:    movq %rcx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_xor_64_const_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB443_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rcx
+; X64-BMI2-NEXT:    xorq $16, %rcx
+; X64-BMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB443_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movl $123, %ecx
+; X64-BMI2-NEXT:    testb $32, %al
+; X64-BMI2-NEXT:    je .LBB443_4
+; X64-BMI2-NEXT:  # %bb.3: # %if.then
+; X64-BMI2-NEXT:    movq 32(%rdi), %rcx
+; X64-BMI2-NEXT:  .LBB443_4: # %return
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw xor ptr %v, i64 16 monotonic, align 8
+  %and = and i64 %0, 32
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 4
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_or_64_const_val(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_or_64_const_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB444_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl $16, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB444_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl $16, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_or_64_const_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB444_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl $16, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB444_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl $16, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_or_64_const_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btsq $4, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    shlq $4, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_or_64_const_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btsq $4, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlq $4, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw or ptr %v, i64 16 monotonic, align 8
+  %and = and i64 %0, 16
+  ret i64 %and
+}
+
+define i64 @atomic_shl1_neq_or_64_const_val(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_or_64_const_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB445_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl $16, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB445_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl $32, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_or_64_const_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB445_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl $16, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB445_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl $32, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_or_64_const_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB445_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rcx
+; X64-NOBMI2-NEXT:    orq $16, %rcx
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB445_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    andl $32, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_or_64_const_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB445_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rcx
+; X64-BMI2-NEXT:    orq $16, %rcx
+; X64-BMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB445_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    andl $32, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw or ptr %v, i64 16 monotonic, align 8
+  %and = and i64 %0, 32
+  ret i64 %and
+}
+
+define i64 @atomic_shl1_or_64_const_valz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_or_64_const_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB446_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl $16, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB446_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    testb $16, %al
+; X86-NOBMI2-NEXT:    sete %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_or_64_const_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB446_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl $16, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB446_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    testb $16, %al
+; X86-BMI2-NEXT:    sete %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_or_64_const_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB446_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rcx
+; X64-NOBMI2-NEXT:    orq $16, %rcx
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB446_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    testb $16, %al
+; X64-NOBMI2-NEXT:    sete %cl
+; X64-NOBMI2-NEXT:    movq %rcx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_or_64_const_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB446_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rcx
+; X64-BMI2-NEXT:    orq $16, %rcx
+; X64-BMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB446_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    testb $16, %al
+; X64-BMI2-NEXT:    sete %cl
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw or ptr %v, i64 16 monotonic, align 8
+  %1 = lshr i64 %0, 4
+  %2 = and i64 %1, 1
+  %lnot.ext = xor i64 %2, 1
+  ret i64 %lnot.ext
+}
+
+define i64 @atomic_shl1_neq_or_64_const_valz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_or_64_const_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB447_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl $16, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB447_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    testb $32, %al
+; X86-NOBMI2-NEXT:    sete %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_or_64_const_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB447_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl $16, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB447_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    testb $32, %al
+; X86-BMI2-NEXT:    sete %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_or_64_const_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB447_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rcx
+; X64-NOBMI2-NEXT:    orq $16, %rcx
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB447_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    testb $32, %al
+; X64-NOBMI2-NEXT:    sete %cl
+; X64-NOBMI2-NEXT:    movq %rcx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_or_64_const_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB447_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rcx
+; X64-BMI2-NEXT:    orq $16, %rcx
+; X64-BMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB447_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    testb $32, %al
+; X64-BMI2-NEXT:    sete %cl
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw or ptr %v, i64 16 monotonic, align 8
+  %1 = lshr i64 %0, 5
+  %2 = and i64 %1, 1
+  %lnot.ext = xor i64 %2, 1
+  ret i64 %lnot.ext
+}
+
+define i64 @atomic_shl1_or_64_const_valnz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_or_64_const_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB448_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl $16, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB448_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    shrl $4, %eax
+; X86-NOBMI2-NEXT:    andl $1, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_or_64_const_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB448_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl $16, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB448_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    shrl $4, %eax
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_or_64_const_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB448_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rcx
+; X64-NOBMI2-NEXT:    orq $16, %rcx
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB448_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    shrl $4, %eax
+; X64-NOBMI2-NEXT:    andl $1, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_or_64_const_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB448_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rcx
+; X64-BMI2-NEXT:    orq $16, %rcx
+; X64-BMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB448_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrl $4, %eax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw or ptr %v, i64 16 monotonic, align 8
+  %1 = lshr i64 %0, 4
+  %lnot.ext = and i64 %1, 1
+  ret i64 %lnot.ext
+}
+
+define i64 @atomic_shl1_neq_or_64_const_valnz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_or_64_const_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB449_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl $16, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB449_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    shrl $5, %eax
+; X86-NOBMI2-NEXT:    andl $1, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_or_64_const_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB449_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl $16, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB449_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    shrl $5, %eax
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_or_64_const_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB449_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rcx
+; X64-NOBMI2-NEXT:    orq $16, %rcx
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB449_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    shrl $5, %eax
+; X64-NOBMI2-NEXT:    andl $1, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_or_64_const_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB449_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rcx
+; X64-BMI2-NEXT:    orq $16, %rcx
+; X64-BMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB449_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrl $5, %eax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw or ptr %v, i64 16 monotonic, align 8
+  %1 = lshr i64 %0, 5
+  %lnot.ext = and i64 %1, 1
+  ret i64 %lnot.ext
+}
+
+define i64 @atomic_shl1_or_64_const_br(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_or_64_const_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB450_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl $16, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB450_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    testb $16, %al
+; X86-NOBMI2-NEXT:    jne .LBB450_4
+; X86-NOBMI2-NEXT:  # %bb.3:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jmp .LBB450_5
+; X86-NOBMI2-NEXT:  .LBB450_4: # %if.then
+; X86-NOBMI2-NEXT:    movl 32(%esi), %eax
+; X86-NOBMI2-NEXT:    movl 36(%esi), %edx
+; X86-NOBMI2-NEXT:  .LBB450_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_or_64_const_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB450_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl $16, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB450_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    testb $16, %al
+; X86-BMI2-NEXT:    jne .LBB450_4
+; X86-BMI2-NEXT:  # %bb.3:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jmp .LBB450_5
+; X86-BMI2-NEXT:  .LBB450_4: # %if.then
+; X86-BMI2-NEXT:    movl 32(%esi), %eax
+; X86-BMI2-NEXT:    movl 36(%esi), %edx
+; X86-BMI2-NEXT:  .LBB450_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_or_64_const_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btsq $4, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    shlq $4, %rax
+; X64-NOBMI2-NEXT:    je .LBB450_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movq 32(%rdi), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB450_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_or_64_const_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btsq $4, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlq $4, %rax
+; X64-BMI2-NEXT:    je .LBB450_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movq 32(%rdi), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB450_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw or ptr %v, i64 16 monotonic, align 8
+  %and = and i64 %0, 16
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 4
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_neq_or_64_const_br(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_or_64_const_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB451_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl $16, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB451_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    testb $32, %al
+; X86-NOBMI2-NEXT:    jne .LBB451_4
+; X86-NOBMI2-NEXT:  # %bb.3:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jmp .LBB451_5
+; X86-NOBMI2-NEXT:  .LBB451_4: # %if.then
+; X86-NOBMI2-NEXT:    movl 32(%esi), %eax
+; X86-NOBMI2-NEXT:    movl 36(%esi), %edx
+; X86-NOBMI2-NEXT:  .LBB451_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_or_64_const_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB451_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl $16, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB451_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    testb $32, %al
+; X86-BMI2-NEXT:    jne .LBB451_4
+; X86-BMI2-NEXT:  # %bb.3:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jmp .LBB451_5
+; X86-BMI2-NEXT:  .LBB451_4: # %if.then
+; X86-BMI2-NEXT:    movl 32(%esi), %eax
+; X86-BMI2-NEXT:    movl 36(%esi), %edx
+; X86-BMI2-NEXT:  .LBB451_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_or_64_const_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB451_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rcx
+; X64-NOBMI2-NEXT:    orq $16, %rcx
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB451_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movl $123, %ecx
+; X64-NOBMI2-NEXT:    testb $32, %al
+; X64-NOBMI2-NEXT:    je .LBB451_4
+; X64-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X64-NOBMI2-NEXT:    movq 32(%rdi), %rcx
+; X64-NOBMI2-NEXT:  .LBB451_4: # %return
+; X64-NOBMI2-NEXT:    movq %rcx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_or_64_const_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB451_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rcx
+; X64-BMI2-NEXT:    orq $16, %rcx
+; X64-BMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB451_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movl $123, %ecx
+; X64-BMI2-NEXT:    testb $32, %al
+; X64-BMI2-NEXT:    je .LBB451_4
+; X64-BMI2-NEXT:  # %bb.3: # %if.then
+; X64-BMI2-NEXT:    movq 32(%rdi), %rcx
+; X64-BMI2-NEXT:  .LBB451_4: # %return
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw or ptr %v, i64 16 monotonic, align 8
+  %and = and i64 %0, 32
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 4
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_or_64_const_brz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_or_64_const_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB452_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl $16, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB452_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    testb $16, %al
+; X86-NOBMI2-NEXT:    jne .LBB452_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movl 32(%esi), %eax
+; X86-NOBMI2-NEXT:    movl 36(%esi), %edx
+; X86-NOBMI2-NEXT:    jmp .LBB452_5
+; X86-NOBMI2-NEXT:  .LBB452_3:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB452_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_or_64_const_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB452_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl $16, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB452_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    testb $16, %al
+; X86-BMI2-NEXT:    jne .LBB452_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movl 32(%esi), %eax
+; X86-BMI2-NEXT:    movl 36(%esi), %edx
+; X86-BMI2-NEXT:    jmp .LBB452_5
+; X86-BMI2-NEXT:  .LBB452_3:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB452_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_or_64_const_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btsq $4, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    shlq $4, %rax
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    je .LBB452_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB452_1: # %if.then
+; X64-NOBMI2-NEXT:    movq 32(%rdi), %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_or_64_const_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btsq $4, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlq $4, %rax
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    je .LBB452_1
+; X64-BMI2-NEXT:  # %bb.2: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB452_1: # %if.then
+; X64-BMI2-NEXT:    movq 32(%rdi), %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw or ptr %v, i64 16 monotonic, align 8
+  %and = and i64 %0, 16
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 4
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_neq_or_64_const_brz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_or_64_const_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB453_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl $16, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB453_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    testb $32, %al
+; X86-NOBMI2-NEXT:    jne .LBB453_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movl 32(%esi), %eax
+; X86-NOBMI2-NEXT:    movl 36(%esi), %edx
+; X86-NOBMI2-NEXT:    jmp .LBB453_5
+; X86-NOBMI2-NEXT:  .LBB453_3:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB453_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_or_64_const_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB453_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl $16, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB453_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    testb $32, %al
+; X86-BMI2-NEXT:    jne .LBB453_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movl 32(%esi), %eax
+; X86-BMI2-NEXT:    movl 36(%esi), %edx
+; X86-BMI2-NEXT:    jmp .LBB453_5
+; X86-BMI2-NEXT:  .LBB453_3:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB453_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_or_64_const_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB453_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rcx
+; X64-NOBMI2-NEXT:    orq $16, %rcx
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB453_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movl $123, %ecx
+; X64-NOBMI2-NEXT:    testb $32, %al
+; X64-NOBMI2-NEXT:    jne .LBB453_4
+; X64-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X64-NOBMI2-NEXT:    movq 32(%rdi), %rcx
+; X64-NOBMI2-NEXT:  .LBB453_4: # %return
+; X64-NOBMI2-NEXT:    movq %rcx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_or_64_const_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB453_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rcx
+; X64-BMI2-NEXT:    orq $16, %rcx
+; X64-BMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB453_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movl $123, %ecx
+; X64-BMI2-NEXT:    testb $32, %al
+; X64-BMI2-NEXT:    jne .LBB453_4
+; X64-BMI2-NEXT:  # %bb.3: # %if.then
+; X64-BMI2-NEXT:    movq 32(%rdi), %rcx
+; X64-BMI2-NEXT:  .LBB453_4: # %return
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw or ptr %v, i64 16 monotonic, align 8
+  %and = and i64 %0, 32
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 4
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_or_64_const_brnz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_or_64_const_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB454_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl $16, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB454_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    testb $16, %al
+; X86-NOBMI2-NEXT:    jne .LBB454_4
+; X86-NOBMI2-NEXT:  # %bb.3:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jmp .LBB454_5
+; X86-NOBMI2-NEXT:  .LBB454_4: # %if.then
+; X86-NOBMI2-NEXT:    movl 32(%esi), %eax
+; X86-NOBMI2-NEXT:    movl 36(%esi), %edx
+; X86-NOBMI2-NEXT:  .LBB454_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_or_64_const_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB454_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl $16, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB454_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    testb $16, %al
+; X86-BMI2-NEXT:    jne .LBB454_4
+; X86-BMI2-NEXT:  # %bb.3:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jmp .LBB454_5
+; X86-BMI2-NEXT:  .LBB454_4: # %if.then
+; X86-BMI2-NEXT:    movl 32(%esi), %eax
+; X86-BMI2-NEXT:    movl 36(%esi), %edx
+; X86-BMI2-NEXT:  .LBB454_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_or_64_const_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btsq $4, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    shlq $4, %rax
+; X64-NOBMI2-NEXT:    je .LBB454_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movq 32(%rdi), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB454_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_or_64_const_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btsq $4, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlq $4, %rax
+; X64-BMI2-NEXT:    je .LBB454_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movq 32(%rdi), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB454_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw or ptr %v, i64 16 monotonic, align 8
+  %and = and i64 %0, 16
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 4
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_neq_or_64_const_brnz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_or_64_const_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB455_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    orl $16, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB455_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    testb $32, %al
+; X86-NOBMI2-NEXT:    jne .LBB455_4
+; X86-NOBMI2-NEXT:  # %bb.3:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jmp .LBB455_5
+; X86-NOBMI2-NEXT:  .LBB455_4: # %if.then
+; X86-NOBMI2-NEXT:    movl 32(%esi), %eax
+; X86-NOBMI2-NEXT:    movl 36(%esi), %edx
+; X86-NOBMI2-NEXT:  .LBB455_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_or_64_const_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB455_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    orl $16, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB455_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    testb $32, %al
+; X86-BMI2-NEXT:    jne .LBB455_4
+; X86-BMI2-NEXT:  # %bb.3:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jmp .LBB455_5
+; X86-BMI2-NEXT:  .LBB455_4: # %if.then
+; X86-BMI2-NEXT:    movl 32(%esi), %eax
+; X86-BMI2-NEXT:    movl 36(%esi), %edx
+; X86-BMI2-NEXT:  .LBB455_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_or_64_const_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB455_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rcx
+; X64-NOBMI2-NEXT:    orq $16, %rcx
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB455_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movl $123, %ecx
+; X64-NOBMI2-NEXT:    testb $32, %al
+; X64-NOBMI2-NEXT:    je .LBB455_4
+; X64-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X64-NOBMI2-NEXT:    movq 32(%rdi), %rcx
+; X64-NOBMI2-NEXT:  .LBB455_4: # %return
+; X64-NOBMI2-NEXT:    movq %rcx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_or_64_const_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB455_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rcx
+; X64-BMI2-NEXT:    orq $16, %rcx
+; X64-BMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB455_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movl $123, %ecx
+; X64-BMI2-NEXT:    testb $32, %al
+; X64-BMI2-NEXT:    je .LBB455_4
+; X64-BMI2-NEXT:  # %bb.3: # %if.then
+; X64-BMI2-NEXT:    movq 32(%rdi), %rcx
+; X64-BMI2-NEXT:  .LBB455_4: # %return
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw or ptr %v, i64 16 monotonic, align 8
+  %and = and i64 %0, 32
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 4
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_and_64_const_val(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_and_64_const_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB456_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl $-17, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB456_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl $16, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_and_64_const_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB456_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl $-17, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB456_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl $16, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_and_64_const_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btrq $4, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    shlq $4, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_and_64_const_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btrq $4, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlq $4, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw and ptr %v, i64 -17 monotonic, align 8
+  %and = and i64 %0, 16
+  ret i64 %and
+}
+
+define i64 @atomic_shl1_neq_and_64_const_val(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_and_64_const_val:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB457_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl $-17, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB457_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    andl $32, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_and_64_const_val:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB457_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl $-17, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB457_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    andl $32, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_and_64_const_val:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB457_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rcx
+; X64-NOBMI2-NEXT:    andq $-17, %rcx
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB457_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    andl $32, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_and_64_const_val:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB457_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rcx
+; X64-BMI2-NEXT:    andq $-17, %rcx
+; X64-BMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB457_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    andl $32, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw and ptr %v, i64 -17 monotonic, align 8
+  %and = and i64 %0, 32
+  ret i64 %and
+}
+
+define i64 @atomic_shl1_and_64_const_valz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_and_64_const_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB458_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl $-17, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB458_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    testb $16, %al
+; X86-NOBMI2-NEXT:    sete %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_and_64_const_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB458_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl $-17, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB458_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    testb $16, %al
+; X86-BMI2-NEXT:    sete %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_and_64_const_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB458_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rcx
+; X64-NOBMI2-NEXT:    andq $-17, %rcx
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB458_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    testb $16, %al
+; X64-NOBMI2-NEXT:    sete %cl
+; X64-NOBMI2-NEXT:    movq %rcx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_and_64_const_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB458_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rcx
+; X64-BMI2-NEXT:    andq $-17, %rcx
+; X64-BMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB458_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    testb $16, %al
+; X64-BMI2-NEXT:    sete %cl
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw and ptr %v, i64 -17 monotonic, align 8
+  %1 = lshr i64 %0, 4
+  %2 = and i64 %1, 1
+  %lnot.ext = xor i64 %2, 1
+  ret i64 %lnot.ext
+}
+
+define i64 @atomic_shl1_neq_and_64_const_valz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_and_64_const_valz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB459_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl $-17, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB459_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X86-NOBMI2-NEXT:    testb $32, %al
+; X86-NOBMI2-NEXT:    sete %cl
+; X86-NOBMI2-NEXT:    movl %ecx, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_and_64_const_valz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB459_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl $-17, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB459_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    xorl %ecx, %ecx
+; X86-BMI2-NEXT:    testb $32, %al
+; X86-BMI2-NEXT:    sete %cl
+; X86-BMI2-NEXT:    movl %ecx, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_and_64_const_valz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB459_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rcx
+; X64-NOBMI2-NEXT:    andq $-17, %rcx
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB459_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    xorl %ecx, %ecx
+; X64-NOBMI2-NEXT:    testb $32, %al
+; X64-NOBMI2-NEXT:    sete %cl
+; X64-NOBMI2-NEXT:    movq %rcx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_and_64_const_valz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB459_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rcx
+; X64-BMI2-NEXT:    andq $-17, %rcx
+; X64-BMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB459_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    xorl %ecx, %ecx
+; X64-BMI2-NEXT:    testb $32, %al
+; X64-BMI2-NEXT:    sete %cl
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw and ptr %v, i64 -17 monotonic, align 8
+  %1 = lshr i64 %0, 5
+  %2 = and i64 %1, 1
+  %lnot.ext = xor i64 %2, 1
+  ret i64 %lnot.ext
+}
+
+define i64 @atomic_shl1_and_64_const_valnz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_and_64_const_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB460_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl $-17, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB460_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    shrl $4, %eax
+; X86-NOBMI2-NEXT:    andl $1, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_and_64_const_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB460_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl $-17, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB460_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    shrl $4, %eax
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_and_64_const_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB460_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rcx
+; X64-NOBMI2-NEXT:    andq $-17, %rcx
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB460_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    shrl $4, %eax
+; X64-NOBMI2-NEXT:    andl $1, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_and_64_const_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB460_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rcx
+; X64-BMI2-NEXT:    andq $-17, %rcx
+; X64-BMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB460_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrl $4, %eax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw and ptr %v, i64 -17 monotonic, align 8
+  %1 = lshr i64 %0, 4
+  %lnot.ext = and i64 %1, 1
+  ret i64 %lnot.ext
+}
+
+define i64 @atomic_shl1_neq_and_64_const_valnz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_and_64_const_valnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB461_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl $-17, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB461_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    shrl $5, %eax
+; X86-NOBMI2-NEXT:    andl $1, %eax
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_and_64_const_valnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB461_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl $-17, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB461_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    shrl $5, %eax
+; X86-BMI2-NEXT:    andl $1, %eax
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_and_64_const_valnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB461_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rcx
+; X64-NOBMI2-NEXT:    andq $-17, %rcx
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB461_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    shrl $5, %eax
+; X64-NOBMI2-NEXT:    andl $1, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_and_64_const_valnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB461_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rcx
+; X64-BMI2-NEXT:    andq $-17, %rcx
+; X64-BMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB461_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    shrl $5, %eax
+; X64-BMI2-NEXT:    andl $1, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw and ptr %v, i64 -17 monotonic, align 8
+  %1 = lshr i64 %0, 5
+  %lnot.ext = and i64 %1, 1
+  ret i64 %lnot.ext
+}
+
+define i64 @atomic_shl1_and_64_const_br(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_and_64_const_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB462_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl $-17, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB462_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    testb $16, %al
+; X86-NOBMI2-NEXT:    jne .LBB462_4
+; X86-NOBMI2-NEXT:  # %bb.3:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jmp .LBB462_5
+; X86-NOBMI2-NEXT:  .LBB462_4: # %if.then
+; X86-NOBMI2-NEXT:    movl 32(%esi), %eax
+; X86-NOBMI2-NEXT:    movl 36(%esi), %edx
+; X86-NOBMI2-NEXT:  .LBB462_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_and_64_const_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB462_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl $-17, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB462_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    testb $16, %al
+; X86-BMI2-NEXT:    jne .LBB462_4
+; X86-BMI2-NEXT:  # %bb.3:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jmp .LBB462_5
+; X86-BMI2-NEXT:  .LBB462_4: # %if.then
+; X86-BMI2-NEXT:    movl 32(%esi), %eax
+; X86-BMI2-NEXT:    movl 36(%esi), %edx
+; X86-BMI2-NEXT:  .LBB462_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_and_64_const_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btrq $4, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    shlq $4, %rax
+; X64-NOBMI2-NEXT:    je .LBB462_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movq 32(%rdi), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB462_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_and_64_const_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btrq $4, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlq $4, %rax
+; X64-BMI2-NEXT:    je .LBB462_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movq 32(%rdi), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB462_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw and ptr %v, i64 -17 monotonic, align 8
+  %and = and i64 %0, 16
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 4
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_neq_and_64_const_br(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_and_64_const_br:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB463_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl $-17, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB463_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    testb $32, %al
+; X86-NOBMI2-NEXT:    jne .LBB463_4
+; X86-NOBMI2-NEXT:  # %bb.3:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jmp .LBB463_5
+; X86-NOBMI2-NEXT:  .LBB463_4: # %if.then
+; X86-NOBMI2-NEXT:    movl 32(%esi), %eax
+; X86-NOBMI2-NEXT:    movl 36(%esi), %edx
+; X86-NOBMI2-NEXT:  .LBB463_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_and_64_const_br:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB463_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl $-17, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB463_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    testb $32, %al
+; X86-BMI2-NEXT:    jne .LBB463_4
+; X86-BMI2-NEXT:  # %bb.3:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jmp .LBB463_5
+; X86-BMI2-NEXT:  .LBB463_4: # %if.then
+; X86-BMI2-NEXT:    movl 32(%esi), %eax
+; X86-BMI2-NEXT:    movl 36(%esi), %edx
+; X86-BMI2-NEXT:  .LBB463_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_and_64_const_br:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB463_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rcx
+; X64-NOBMI2-NEXT:    andq $-17, %rcx
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB463_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movl $123, %ecx
+; X64-NOBMI2-NEXT:    testb $32, %al
+; X64-NOBMI2-NEXT:    je .LBB463_4
+; X64-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X64-NOBMI2-NEXT:    movq 32(%rdi), %rcx
+; X64-NOBMI2-NEXT:  .LBB463_4: # %return
+; X64-NOBMI2-NEXT:    movq %rcx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_and_64_const_br:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB463_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rcx
+; X64-BMI2-NEXT:    andq $-17, %rcx
+; X64-BMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB463_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movl $123, %ecx
+; X64-BMI2-NEXT:    testb $32, %al
+; X64-BMI2-NEXT:    je .LBB463_4
+; X64-BMI2-NEXT:  # %bb.3: # %if.then
+; X64-BMI2-NEXT:    movq 32(%rdi), %rcx
+; X64-BMI2-NEXT:  .LBB463_4: # %return
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw and ptr %v, i64 -17 monotonic, align 8
+  %and = and i64 %0, 32
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 4
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_and_64_const_brz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_and_64_const_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB464_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl $-17, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB464_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    testb $16, %al
+; X86-NOBMI2-NEXT:    jne .LBB464_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movl 32(%esi), %eax
+; X86-NOBMI2-NEXT:    movl 36(%esi), %edx
+; X86-NOBMI2-NEXT:    jmp .LBB464_5
+; X86-NOBMI2-NEXT:  .LBB464_3:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB464_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_and_64_const_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB464_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl $-17, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB464_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    testb $16, %al
+; X86-BMI2-NEXT:    jne .LBB464_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movl 32(%esi), %eax
+; X86-BMI2-NEXT:    movl 36(%esi), %edx
+; X86-BMI2-NEXT:    jmp .LBB464_5
+; X86-BMI2-NEXT:  .LBB464_3:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB464_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_and_64_const_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btrq $4, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    shlq $4, %rax
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    je .LBB464_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %return
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB464_1: # %if.then
+; X64-NOBMI2-NEXT:    movq 32(%rdi), %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_and_64_const_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btrq $4, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlq $4, %rax
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    je .LBB464_1
+; X64-BMI2-NEXT:  # %bb.2: # %return
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB464_1: # %if.then
+; X64-BMI2-NEXT:    movq 32(%rdi), %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw and ptr %v, i64 -17 monotonic, align 8
+  %and = and i64 %0, 16
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 4
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_neq_and_64_const_brz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_and_64_const_brz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB465_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl $-17, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB465_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    testb $32, %al
+; X86-NOBMI2-NEXT:    jne .LBB465_3
+; X86-NOBMI2-NEXT:  # %bb.4: # %if.then
+; X86-NOBMI2-NEXT:    movl 32(%esi), %eax
+; X86-NOBMI2-NEXT:    movl 36(%esi), %edx
+; X86-NOBMI2-NEXT:    jmp .LBB465_5
+; X86-NOBMI2-NEXT:  .LBB465_3:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:  .LBB465_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_and_64_const_brz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB465_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl $-17, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB465_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    testb $32, %al
+; X86-BMI2-NEXT:    jne .LBB465_3
+; X86-BMI2-NEXT:  # %bb.4: # %if.then
+; X86-BMI2-NEXT:    movl 32(%esi), %eax
+; X86-BMI2-NEXT:    movl 36(%esi), %edx
+; X86-BMI2-NEXT:    jmp .LBB465_5
+; X86-BMI2-NEXT:  .LBB465_3:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:  .LBB465_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_and_64_const_brz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB465_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rcx
+; X64-NOBMI2-NEXT:    andq $-17, %rcx
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB465_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movl $123, %ecx
+; X64-NOBMI2-NEXT:    testb $32, %al
+; X64-NOBMI2-NEXT:    jne .LBB465_4
+; X64-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X64-NOBMI2-NEXT:    movq 32(%rdi), %rcx
+; X64-NOBMI2-NEXT:  .LBB465_4: # %return
+; X64-NOBMI2-NEXT:    movq %rcx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_and_64_const_brz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB465_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rcx
+; X64-BMI2-NEXT:    andq $-17, %rcx
+; X64-BMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB465_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movl $123, %ecx
+; X64-BMI2-NEXT:    testb $32, %al
+; X64-BMI2-NEXT:    jne .LBB465_4
+; X64-BMI2-NEXT:  # %bb.3: # %if.then
+; X64-BMI2-NEXT:    movq 32(%rdi), %rcx
+; X64-BMI2-NEXT:  .LBB465_4: # %return
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw and ptr %v, i64 -17 monotonic, align 8
+  %and = and i64 %0, 32
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %if.then, label %return
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 4
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_and_64_const_brnz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_and_64_const_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB466_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl $-17, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB466_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    testb $16, %al
+; X86-NOBMI2-NEXT:    jne .LBB466_4
+; X86-NOBMI2-NEXT:  # %bb.3:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jmp .LBB466_5
+; X86-NOBMI2-NEXT:  .LBB466_4: # %if.then
+; X86-NOBMI2-NEXT:    movl 32(%esi), %eax
+; X86-NOBMI2-NEXT:    movl 36(%esi), %edx
+; X86-NOBMI2-NEXT:  .LBB466_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_and_64_const_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB466_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl $-17, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB466_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    testb $16, %al
+; X86-BMI2-NEXT:    jne .LBB466_4
+; X86-BMI2-NEXT:  # %bb.3:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jmp .LBB466_5
+; X86-BMI2-NEXT:  .LBB466_4: # %if.then
+; X86-BMI2-NEXT:    movl 32(%esi), %eax
+; X86-BMI2-NEXT:    movl 36(%esi), %edx
+; X86-BMI2-NEXT:  .LBB466_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_and_64_const_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    xorl %eax, %eax
+; X64-NOBMI2-NEXT:    lock btrq $4, (%rdi)
+; X64-NOBMI2-NEXT:    setb %al
+; X64-NOBMI2-NEXT:    shlq $4, %rax
+; X64-NOBMI2-NEXT:    je .LBB466_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %if.then
+; X64-NOBMI2-NEXT:    movq 32(%rdi), %rax
+; X64-NOBMI2-NEXT:    retq
+; X64-NOBMI2-NEXT:  .LBB466_1:
+; X64-NOBMI2-NEXT:    movl $123, %eax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_and_64_const_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    xorl %eax, %eax
+; X64-BMI2-NEXT:    lock btrq $4, (%rdi)
+; X64-BMI2-NEXT:    setb %al
+; X64-BMI2-NEXT:    shlq $4, %rax
+; X64-BMI2-NEXT:    je .LBB466_1
+; X64-BMI2-NEXT:  # %bb.2: # %if.then
+; X64-BMI2-NEXT:    movq 32(%rdi), %rax
+; X64-BMI2-NEXT:    retq
+; X64-BMI2-NEXT:  .LBB466_1:
+; X64-BMI2-NEXT:    movl $123, %eax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw and ptr %v, i64 -17 monotonic, align 8
+  %and = and i64 %0, 16
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 4
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}
+
+define i64 @atomic_shl1_neq_and_64_const_brnz(ptr %v) {
+; X86-NOBMI2-LABEL: atomic_shl1_neq_and_64_const_brnz:
+; X86-NOBMI2:       # %bb.0: # %entry
+; X86-NOBMI2-NEXT:    pushl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    pushl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-NOBMI2-NEXT:    .cfi_offset %esi, -12
+; X86-NOBMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-NOBMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-NOBMI2-NEXT:    movl (%esi), %eax
+; X86-NOBMI2-NEXT:    movl 4(%esi), %edx
+; X86-NOBMI2-NEXT:    .p2align 4, 0x90
+; X86-NOBMI2-NEXT:  .LBB467_1: # %atomicrmw.start
+; X86-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NOBMI2-NEXT:    movl %eax, %ebx
+; X86-NOBMI2-NEXT:    andl $-17, %ebx
+; X86-NOBMI2-NEXT:    movl %edx, %ecx
+; X86-NOBMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-NOBMI2-NEXT:    jne .LBB467_1
+; X86-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-NOBMI2-NEXT:    testb $32, %al
+; X86-NOBMI2-NEXT:    jne .LBB467_4
+; X86-NOBMI2-NEXT:  # %bb.3:
+; X86-NOBMI2-NEXT:    xorl %edx, %edx
+; X86-NOBMI2-NEXT:    movl $123, %eax
+; X86-NOBMI2-NEXT:    jmp .LBB467_5
+; X86-NOBMI2-NEXT:  .LBB467_4: # %if.then
+; X86-NOBMI2-NEXT:    movl 32(%esi), %eax
+; X86-NOBMI2-NEXT:    movl 36(%esi), %edx
+; X86-NOBMI2-NEXT:  .LBB467_5: # %return
+; X86-NOBMI2-NEXT:    popl %esi
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-NOBMI2-NEXT:    popl %ebx
+; X86-NOBMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-NOBMI2-NEXT:    retl
+;
+; X86-BMI2-LABEL: atomic_shl1_neq_and_64_const_brnz:
+; X86-BMI2:       # %bb.0: # %entry
+; X86-BMI2-NEXT:    pushl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    pushl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 12
+; X86-BMI2-NEXT:    .cfi_offset %esi, -12
+; X86-BMI2-NEXT:    .cfi_offset %ebx, -8
+; X86-BMI2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; X86-BMI2-NEXT:    movl (%esi), %eax
+; X86-BMI2-NEXT:    movl 4(%esi), %edx
+; X86-BMI2-NEXT:    .p2align 4, 0x90
+; X86-BMI2-NEXT:  .LBB467_1: # %atomicrmw.start
+; X86-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-BMI2-NEXT:    movl %eax, %ebx
+; X86-BMI2-NEXT:    andl $-17, %ebx
+; X86-BMI2-NEXT:    movl %edx, %ecx
+; X86-BMI2-NEXT:    lock cmpxchg8b (%esi)
+; X86-BMI2-NEXT:    jne .LBB467_1
+; X86-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X86-BMI2-NEXT:    testb $32, %al
+; X86-BMI2-NEXT:    jne .LBB467_4
+; X86-BMI2-NEXT:  # %bb.3:
+; X86-BMI2-NEXT:    xorl %edx, %edx
+; X86-BMI2-NEXT:    movl $123, %eax
+; X86-BMI2-NEXT:    jmp .LBB467_5
+; X86-BMI2-NEXT:  .LBB467_4: # %if.then
+; X86-BMI2-NEXT:    movl 32(%esi), %eax
+; X86-BMI2-NEXT:    movl 36(%esi), %edx
+; X86-BMI2-NEXT:  .LBB467_5: # %return
+; X86-BMI2-NEXT:    popl %esi
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 8
+; X86-BMI2-NEXT:    popl %ebx
+; X86-BMI2-NEXT:    .cfi_def_cfa_offset 4
+; X86-BMI2-NEXT:    retl
+;
+; X64-NOBMI2-LABEL: atomic_shl1_neq_and_64_const_brnz:
+; X64-NOBMI2:       # %bb.0: # %entry
+; X64-NOBMI2-NEXT:    movq (%rdi), %rax
+; X64-NOBMI2-NEXT:    .p2align 4, 0x90
+; X64-NOBMI2-NEXT:  .LBB467_1: # %atomicrmw.start
+; X64-NOBMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NOBMI2-NEXT:    movq %rax, %rcx
+; X64-NOBMI2-NEXT:    andq $-17, %rcx
+; X64-NOBMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-NOBMI2-NEXT:    jne .LBB467_1
+; X64-NOBMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-NOBMI2-NEXT:    movl $123, %ecx
+; X64-NOBMI2-NEXT:    testb $32, %al
+; X64-NOBMI2-NEXT:    je .LBB467_4
+; X64-NOBMI2-NEXT:  # %bb.3: # %if.then
+; X64-NOBMI2-NEXT:    movq 32(%rdi), %rcx
+; X64-NOBMI2-NEXT:  .LBB467_4: # %return
+; X64-NOBMI2-NEXT:    movq %rcx, %rax
+; X64-NOBMI2-NEXT:    retq
+;
+; X64-BMI2-LABEL: atomic_shl1_neq_and_64_const_brnz:
+; X64-BMI2:       # %bb.0: # %entry
+; X64-BMI2-NEXT:    movq (%rdi), %rax
+; X64-BMI2-NEXT:    .p2align 4, 0x90
+; X64-BMI2-NEXT:  .LBB467_1: # %atomicrmw.start
+; X64-BMI2-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-BMI2-NEXT:    movq %rax, %rcx
+; X64-BMI2-NEXT:    andq $-17, %rcx
+; X64-BMI2-NEXT:    lock cmpxchgq %rcx, (%rdi)
+; X64-BMI2-NEXT:    jne .LBB467_1
+; X64-BMI2-NEXT:  # %bb.2: # %atomicrmw.end
+; X64-BMI2-NEXT:    movl $123, %ecx
+; X64-BMI2-NEXT:    testb $32, %al
+; X64-BMI2-NEXT:    je .LBB467_4
+; X64-BMI2-NEXT:  # %bb.3: # %if.then
+; X64-BMI2-NEXT:    movq 32(%rdi), %rcx
+; X64-BMI2-NEXT:  .LBB467_4: # %return
+; X64-BMI2-NEXT:    movq %rcx, %rax
+; X64-BMI2-NEXT:    retq
+entry:
+  %0 = atomicrmw and ptr %v, i64 -17 monotonic, align 8
+  %and = and i64 %0, 32
+  %tobool.not = icmp eq i64 %and, 0
+  br i1 %tobool.not, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %arrayidx = getelementptr inbounds i64, ptr %v, i64 4
+  %1 = load i64, ptr %arrayidx, align 8
+  br label %return
+
+return:                                           ; preds = %entry, %if.then
+  %retval.0 = phi i64 [ %1, %if.then ], [ 123, %entry ]
+  ret i64 %retval.0
+}