[RISCV] Add codegen support for RV64A

[asb]

Summary

In order to support codegen RV64A, this patch:

• Introduces masked atomics intrinsics for atomicrmw operations and cmpxchg that use the i64 type. These are ultimately lowered to masked operations using lr.w/sc.w, but we need to use these alternate intrinsics for RV64 because i32 is not legal
• Modifies RISCVExpandPseudoInsts.cpp to handle PseudoAtomicLoadNand64 and PseudoCmpXchg64
• Modifies the AtomicExpandPass hooks in RISCVTargetLowering sext/trunc as needed for RV64 and to select the i64 intrinsic IDs when necessary
• Adds appropriate patterns to RISCVInstrInfoA.td
• Updates test/CodeGen/RISCV/atomic-*.ll to show RV64A support

This ends up being a fairly mechanical change, as the logic for RV32A is effectively reused.

[asb]

Refreshing patch, no changes.

[asb]

I'll update this to include cmpxchg support now D48131 landed.

[asb]

Updated. Now handles cmpxchg, supporting all RV64A. The code changes are actually pretty minimal so I hope this is fairly straight-forward to review.

@jyknight: might you find time to look at this?

[jyknight]

In D53233#1354863, @asb wrote:

Updated. Now handles cmpxchg, supporting all RV64A. The code changes are actually pretty minimal so I hope this is fairly straight-forward to review.

Indeed. LGTM!

include/llvm/IR/IntrinsicsRISCV.td

 def int_riscv_masked_atomicrmw_add_i32  : MaskedAtomicRMW32Intrinsic;
 def int_riscv_masked_atomicrmw_sub_i32  : MaskedAtomicRMW32Intrinsic;
 def int_riscv_masked_atomicrmw_nand_i32 : MaskedAtomicRMW32Intrinsic;
 def int_riscv_masked_atomicrmw_max_i32  : MaskedAtomicRMW32WithSextIntrinsic;
 def int_riscv_masked_atomicrmw_min_i32  : MaskedAtomicRMW32WithSextIntrinsic;
 def int_riscv_masked_atomicrmw_umax_i32 : MaskedAtomicRMW32Intrinsic;
 def int_riscv_masked_atomicrmw_umin_i32 : MaskedAtomicRMW32Intrinsic;
 
+class MaskedAtomicRMW64Intrinsic
+    : Intrinsic<[llvm_i64_ty],
+                [llvm_anyptr_ty, llvm_i64_ty, llvm_i64_ty, llvm_i64_ty],
+                [IntrArgMemOnly, NoCapture<0>]>;
+
+class MaskedAtomicRMW64WithSextIntrinsic
+    : Intrinsic<[llvm_i64_ty],
+                [llvm_anyptr_ty, llvm_i64_ty, llvm_i64_ty, llvm_i64_ty,
+                 llvm_i64_ty],
+                [IntrArgMemOnly, NoCapture<0>]>;
+
+def int_riscv_masked_atomicrmw_xchg_i64 : MaskedAtomicRMW64Intrinsic;
+def int_riscv_masked_atomicrmw_add_i64  : MaskedAtomicRMW64Intrinsic;
+def int_riscv_masked_atomicrmw_sub_i64  : MaskedAtomicRMW64Intrinsic;
+def int_riscv_masked_atomicrmw_nand_i64 : MaskedAtomicRMW64Intrinsic;
+def int_riscv_masked_atomicrmw_max_i64  : MaskedAtomicRMW64WithSextIntrinsic;
+def int_riscv_masked_atomicrmw_min_i64  : MaskedAtomicRMW64WithSextIntrinsic;
+def int_riscv_masked_atomicrmw_umax_i64 : MaskedAtomicRMW64Intrinsic;
+def int_riscv_masked_atomicrmw_umin_i64 : MaskedAtomicRMW64Intrinsic;
+
 } // TargetPrefix = "riscv"

lib/Target/RISCV/RISCVExpandPseudoInsts.cpp

 
 bool RISCVExpandPseudo::expandMI(MachineBasicBlock &MBB,
                                  MachineBasicBlock::iterator MBBI,
                                  MachineBasicBlock::iterator &NextMBBI) {
   switch (MBBI->getOpcode()) {
   case RISCV::PseudoAtomicLoadNand32:
     return expandAtomicBinOp(MBB, MBBI, AtomicRMWInst::Nand, false, 32,
                              NextMBBI);
+  case RISCV::PseudoAtomicLoadNand64:
+    return expandAtomicBinOp(MBB, MBBI, AtomicRMWInst::Nand, false, 64,
+                             NextMBBI);
   case RISCV::PseudoMaskedAtomicSwap32:
     return expandAtomicBinOp(MBB, MBBI, AtomicRMWInst::Xchg, true, 32,
                              NextMBBI);
   case RISCV::PseudoMaskedAtomicLoadAdd32:
     return expandAtomicBinOp(MBB, MBBI, AtomicRMWInst::Add, true, 32, NextMBBI);
   case RISCV::PseudoMaskedAtomicLoadSub32:
     return expandAtomicBinOp(MBB, MBBI, AtomicRMWInst::Sub, true, 32, NextMBBI);
   case RISCV::PseudoMaskedAtomicLoadNand32:
case AtomicOrdering::Release:
     return RISCV::SC_W_RL;
   case AtomicOrdering::AcquireRelease:
     return RISCV::SC_W_RL;
   case AtomicOrdering::SequentiallyConsistent:
     return RISCV::SC_W_AQ_RL;
   }
 }
 
+static unsigned getLRForRMW64(AtomicOrdering Ordering) {
+  switch (Ordering) {
+  default:
+    llvm_unreachable("Unexpected AtomicOrdering");
+  case AtomicOrdering::Monotonic:
+    return RISCV::LR_D;
+  case AtomicOrdering::Acquire:
+    return RISCV::LR_D_AQ;
+  case AtomicOrdering::Release:
+    return RISCV::LR_D;
+  case AtomicOrdering::AcquireRelease:
+    return RISCV::LR_D_AQ;
+  case AtomicOrdering::SequentiallyConsistent:
+    return RISCV::LR_D_AQ_RL;
+  }
+}
+
+static unsigned getSCForRMW64(AtomicOrdering Ordering) {
+  switch (Ordering) {
+  default:
+    llvm_unreachable("Unexpected AtomicOrdering");
+  case AtomicOrdering::Monotonic:
+    return RISCV::SC_D;
+  case AtomicOrdering::Acquire:
+    return RISCV::SC_D;
+  case AtomicOrdering::Release:
+    return RISCV::SC_D_RL;
+  case AtomicOrdering::AcquireRelease:
+    return RISCV::SC_D_RL;
+  case AtomicOrdering::SequentiallyConsistent:
+    return RISCV::SC_D_AQ_RL;
+  }
+}
+
+static unsigned getLRForRMW(AtomicOrdering Ordering, int Width) {
+  if (Width == 32)
+    return getLRForRMW32(Ordering);
+  if (Width == 64)
+    return getLRForRMW64(Ordering);
+  llvm_unreachable("Unexpected LR width\n");
+}
+
+static unsigned getSCForRMW(AtomicOrdering Ordering, int Width) {
+  if (Width == 32)
+    return getSCForRMW32(Ordering);
+  if (Width == 64)
+    return getSCForRMW64(Ordering);
+  llvm_unreachable("Unexpected SC width\n");
+}
+
 static void doAtomicBinOpExpansion(const RISCVInstrInfo *TII, MachineInstr &MI,
                                    DebugLoc DL, MachineBasicBlock *ThisMBB,
                                    MachineBasicBlock *LoopMBB,
                                    MachineBasicBlock *DoneMBB,
                                    AtomicRMWInst::BinOp BinOp, int Width) {
-  assert(Width == 32 && "RV64 atomic expansion currently unsupported");
   unsigned DestReg = MI.getOperand(0).getReg();
   unsigned ScratchReg = MI.getOperand(1).getReg();
   unsigned AddrReg = MI.getOperand(2).getReg();
   unsigned IncrReg = MI.getOperand(3).getReg();
   AtomicOrdering Ordering =
       static_cast<AtomicOrdering>(MI.getOperand(4).getImm());
 
   // .loop:
-  //   lr.w dest, (addr)
+  //   lr.[w|d] dest, (addr)
   //   binop scratch, dest, val
-  //   sc.w scratch, scratch, (addr)
+  //   sc.[w|d] scratch, scratch, (addr)
   //   bnez scratch, loop
-  BuildMI(LoopMBB, DL, TII->get(getLRForRMW32(Ordering)), DestReg)
+  BuildMI(LoopMBB, DL, TII->get(getLRForRMW(Ordering, Width)), DestReg)
       .addReg(AddrReg);
   switch (BinOp) {
   default:
     llvm_unreachable("Unexpected AtomicRMW BinOp");
   case AtomicRMWInst::Nand:
     BuildMI(LoopMBB, DL, TII->get(RISCV::AND), ScratchReg)
         .addReg(DestReg)
         .addReg(IncrReg);
     BuildMI(LoopMBB, DL, TII->get(RISCV::XORI), ScratchReg)
         .addReg(ScratchReg)
         .addImm(-1);
     break;
   }
-  BuildMI(LoopMBB, DL, TII->get(getSCForRMW32(Ordering)), ScratchReg)
+  BuildMI(LoopMBB, DL, TII->get(getSCForRMW(Ordering, Width)), ScratchReg)
       .addReg(AddrReg)
       .addReg(ScratchReg);
   BuildMI(LoopMBB, DL, TII->get(RISCV::BNE))
       .addReg(ScratchReg)
       .addReg(RISCV::X0)
       .addMBB(LoopMBB);
 }
 

lib/Target/RISCV/RISCVISelLowering.cpp

 RISCVTargetLowering::shouldExpandAtomicRMWInIR(AtomicRMWInst *AI) const {
   unsigned Size = AI->getType()->getPrimitiveSizeInBits();
   if (Size == 8 || Size == 16)
     return AtomicExpansionKind::MaskedIntrinsic;
   return AtomicExpansionKind::None;
 }
 
 static Intrinsic::ID
-getIntrinsicForMaskedAtomicRMWBinOp32(AtomicRMWInst::BinOp BinOp) {
+getIntrinsicForMaskedAtomicRMWBinOp(unsigned XLen, AtomicRMWInst::BinOp BinOp) {
+  if (XLen == 32) {
     switch (BinOp) {
     default:
       llvm_unreachable("Unexpected AtomicRMW BinOp");
     case AtomicRMWInst::Xchg:
       return Intrinsic::riscv_masked_atomicrmw_xchg_i32;
     case AtomicRMWInst::Add:
       return Intrinsic::riscv_masked_atomicrmw_add_i32;
     case AtomicRMWInst::Sub:
       return Intrinsic::riscv_masked_atomicrmw_sub_i32;
     case AtomicRMWInst::Nand:
       return Intrinsic::riscv_masked_atomicrmw_nand_i32;
     case AtomicRMWInst::Max:
       return Intrinsic::riscv_masked_atomicrmw_max_i32;
     case AtomicRMWInst::Min:
       return Intrinsic::riscv_masked_atomicrmw_min_i32;
     case AtomicRMWInst::UMax:
       return Intrinsic::riscv_masked_atomicrmw_umax_i32;
     case AtomicRMWInst::UMin:
       return Intrinsic::riscv_masked_atomicrmw_umin_i32;
     }
   }
 
+  if (XLen == 64) {
+    switch (BinOp) {
+    default:
+      llvm_unreachable("Unexpected AtomicRMW BinOp");
+    case AtomicRMWInst::Xchg:
+      return Intrinsic::riscv_masked_atomicrmw_xchg_i64;
+    case AtomicRMWInst::Add:
+      return Intrinsic::riscv_masked_atomicrmw_add_i64;
+    case AtomicRMWInst::Sub:
+      return Intrinsic::riscv_masked_atomicrmw_sub_i64;
+    case AtomicRMWInst::Nand:
+      return Intrinsic::riscv_masked_atomicrmw_nand_i64;
+    case AtomicRMWInst::Max:
+      return Intrinsic::riscv_masked_atomicrmw_max_i64;
+    case AtomicRMWInst::Min:
+      return Intrinsic::riscv_masked_atomicrmw_min_i64;
+    case AtomicRMWInst::UMax:
+      return Intrinsic::riscv_masked_atomicrmw_umax_i64;
+    case AtomicRMWInst::UMin:
+      return Intrinsic::riscv_masked_atomicrmw_umin_i64;
+    }
+  }
+
+  llvm_unreachable("Unexpected XLen\n");
+}
+
 Value *RISCVTargetLowering::emitMaskedAtomicRMWIntrinsic(
     IRBuilder<> &Builder, AtomicRMWInst *AI, Value *AlignedAddr, Value *Incr,
     Value *Mask, Value *ShiftAmt, AtomicOrdering Ord) const {
-  Value *Ordering = Builder.getInt32(static_cast<uint32_t>(AI->getOrdering()));
+  unsigned XLen = Subtarget.getXLen();
+  Value *Ordering =
+      Builder.getIntN(XLen, static_cast<uint64_t>(AI->getOrdering()));
   Type *Tys[] = {AlignedAddr->getType()};
   Function *LrwOpScwLoop = Intrinsic::getDeclaration(
       AI->getModule(),
-      getIntrinsicForMaskedAtomicRMWBinOp32(AI->getOperation()), Tys);
+      getIntrinsicForMaskedAtomicRMWBinOp(XLen, AI->getOperation()), Tys);
+
+  if (XLen == 64) {
+    Incr = Builder.CreateSExt(Incr, Builder.getInt64Ty());
+    Mask = Builder.CreateSExt(Mask, Builder.getInt64Ty());
+    ShiftAmt = Builder.CreateSExt(ShiftAmt, Builder.getInt64Ty());
+  }
+
+  Value *Result;
 
   // Must pass the shift amount needed to sign extend the loaded value prior
   // to performing a signed comparison for min/max. ShiftAmt is the number of
   // bits to shift the value into position. Pass XLen-ShiftAmt-ValWidth, which
   // is the number of bits to left+right shift the value in order to
   // sign-extend.
   if (AI->getOperation() == AtomicRMWInst::Min ||
       AI->getOperation() == AtomicRMWInst::Max) {
     const DataLayout &DL = AI->getModule()->getDataLayout();
     unsigned ValWidth =
         DL.getTypeStoreSizeInBits(AI->getValOperand()->getType());
-    Value *SextShamt = Builder.CreateSub(
-        Builder.getInt32(Subtarget.getXLen() - ValWidth), ShiftAmt);
-    return Builder.CreateCall(LrwOpScwLoop,
+    Value *SextShamt =
+        Builder.CreateSub(Builder.getIntN(XLen, XLen - ValWidth), ShiftAmt);
+    Result = Builder.CreateCall(LrwOpScwLoop,
                                 {AlignedAddr, Incr, Mask, SextShamt, Ordering});
+  } else {
+    Result =
+        Builder.CreateCall(LrwOpScwLoop, {AlignedAddr, Incr, Mask, Ordering});
   }
 
-  return Builder.CreateCall(LrwOpScwLoop, {AlignedAddr, Incr, Mask, Ordering});
+  if (XLen == 64)
+    Result = Builder.CreateTrunc(Result, Builder.getInt32Ty());
+  return Result;
 }

lib/Target/RISCV/RISCVInstrInfoA.td

class PseudoAMO : Pseudo<(outs GPR:$res, GPR:$scratch),
                          (ins GPR:$addr, GPR:$incr, ixlenimm:$ordering), []> {
   let Constraints = "@earlyclobber $res,@earlyclobber $scratch";
   let mayLoad = 1;
   let mayStore = 1;
   let hasSideEffects = 0;
 }
 
 def PseudoAtomicLoadNand32 : PseudoAMO;
-// Ordering constants must be kept in sync with the AtomicOrdering enum in 
+// Ordering constants must be kept in sync with the AtomicOrdering enum in
 // AtomicOrdering.h.
 def : Pat<(atomic_load_nand_32_monotonic GPR:$addr, GPR:$incr),
           (PseudoAtomicLoadNand32 GPR:$addr, GPR:$incr, 2)>;
 def : Pat<(atomic_load_nand_32_acquire GPR:$addr, GPR:$incr),
           (PseudoAtomicLoadNand32 GPR:$addr, GPR:$incr, 4)>;
 def : Pat<(atomic_load_nand_32_release GPR:$addr, GPR:$incr),
           (PseudoAtomicLoadNand32 GPR:$addr, GPR:$incr, 5)>;
 def : Pat<(atomic_load_nand_32_acq_rel GPR:$addr, GPR:$incr),
def : PseudoMaskedAMOMinMaxPat<int_riscv_masked_atomicrmw_min_i32,
                                PseudoMaskedAtomicLoadMin32>;
 def PseudoMaskedAtomicLoadUMax32 : PseudoMaskedAMOUMinUMax;
 def : PseudoMaskedAMOPat<int_riscv_masked_atomicrmw_umax_i32,
                          PseudoMaskedAtomicLoadUMax32>;
 def PseudoMaskedAtomicLoadUMin32 : PseudoMaskedAMOUMinUMax;
 def : PseudoMaskedAMOPat<int_riscv_masked_atomicrmw_umin_i32,
                          PseudoMaskedAtomicLoadUMin32>;
 } // Predicates = [HasStdExtA]
+
+let Predicates = [HasStdExtA, IsRV64] in {
+defm : LdPat<atomic_load_64, LD>;
+defm : AtomicStPat<atomic_store_64, SD, GPR>;
+
+defm : AMOPat<"atomic_swap_64", "AMOSWAP_D">;
+defm : AMOPat<"atomic_load_add_64", "AMOADD_D">;
+defm : AMOPat<"atomic_load_and_64", "AMOAND_D">;
+defm : AMOPat<"atomic_load_or_64", "AMOOR_D">;
+defm : AMOPat<"atomic_load_xor_64", "AMOXOR_D">;
+defm : AMOPat<"atomic_load_max_64", "AMOMAX_D">;
+defm : AMOPat<"atomic_load_min_64", "AMOMIN_D">;
+defm : AMOPat<"atomic_load_umax_64", "AMOMAXU_D">;
+defm : AMOPat<"atomic_load_umin_64", "AMOMINU_D">;
+
+def : Pat<(atomic_load_sub_64_monotonic GPR:$addr, GPR:$incr),
+          (AMOADD_D GPR:$addr, (SUB X0, GPR:$incr))>;
+def : Pat<(atomic_load_sub_64_acquire GPR:$addr, GPR:$incr),
+          (AMOADD_D_AQ GPR:$addr, (SUB X0, GPR:$incr))>;
+def : Pat<(atomic_load_sub_64_release GPR:$addr, GPR:$incr),
+          (AMOADD_D_RL GPR:$addr, (SUB X0, GPR:$incr))>;
+def : Pat<(atomic_load_sub_64_acq_rel GPR:$addr, GPR:$incr),
+          (AMOADD_D_AQ_RL GPR:$addr, (SUB X0, GPR:$incr))>;
+def : Pat<(atomic_load_sub_64_seq_cst GPR:$addr, GPR:$incr),
+          (AMOADD_D_AQ_RL GPR:$addr, (SUB X0, GPR:$incr))>;
+
+def PseudoAtomicLoadNand64 : PseudoAMO;
+// Ordering constants must be kept in sync with the AtomicOrdering enum in
+// AtomicOrdering.h.
+def : Pat<(atomic_load_nand_64_monotonic GPR:$addr, GPR:$incr),
+          (PseudoAtomicLoadNand64 GPR:$addr, GPR:$incr, 2)>;
+def : Pat<(atomic_load_nand_64_acquire GPR:$addr, GPR:$incr),
+          (PseudoAtomicLoadNand64 GPR:$addr, GPR:$incr, 4)>;
+def : Pat<(atomic_load_nand_64_release GPR:$addr, GPR:$incr),
+          (PseudoAtomicLoadNand64 GPR:$addr, GPR:$incr, 5)>;
+def : Pat<(atomic_load_nand_64_acq_rel GPR:$addr, GPR:$incr),
+          (PseudoAtomicLoadNand64 GPR:$addr, GPR:$incr, 6)>;
+def : Pat<(atomic_load_nand_64_seq_cst GPR:$addr, GPR:$incr),
+          (PseudoAtomicLoadNand64 GPR:$addr, GPR:$incr, 7)>;
+
+def : PseudoMaskedAMOPat<int_riscv_masked_atomicrmw_xchg_i64,
+                         PseudoMaskedAtomicSwap32>;
+def : PseudoMaskedAMOPat<int_riscv_masked_atomicrmw_add_i64,
+                         PseudoMaskedAtomicLoadAdd32>;
+def : PseudoMaskedAMOPat<int_riscv_masked_atomicrmw_sub_i64,
+                         PseudoMaskedAtomicLoadSub32>;
+def : PseudoMaskedAMOPat<int_riscv_masked_atomicrmw_nand_i64,
+                         PseudoMaskedAtomicLoadNand32>;
+def : PseudoMaskedAMOMinMaxPat<int_riscv_masked_atomicrmw_max_i64,
+                               PseudoMaskedAtomicLoadMax32>;
+def : PseudoMaskedAMOMinMaxPat<int_riscv_masked_atomicrmw_min_i64,
+                               PseudoMaskedAtomicLoadMin32>;
+def : PseudoMaskedAMOPat<int_riscv_masked_atomicrmw_umax_i64,
+                         PseudoMaskedAtomicLoadUMax32>;
+def : PseudoMaskedAMOPat<int_riscv_masked_atomicrmw_umin_i64,
+                         PseudoMaskedAtomicLoadUMin32>;
+} // Predicates = [HasStdExtA, IsRV64]

test/CodeGen/RISCV/atomic-load-store.ll

 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
 ; RUN: llc -mtriple=riscv32 -verify-machineinstrs < %s \
 ; RUN:   | FileCheck -check-prefix=RV32I %s
 ; RUN: llc -mtriple=riscv32 -mattr=+a -verify-machineinstrs < %s \
 ; RUN:   | FileCheck -check-prefix=RV32IA %s
+; RUN: llc -mtriple=riscv64 -verify-machineinstrs < %s \
+; RUN:   | FileCheck -check-prefix=RV64I %s
+; RUN: llc -mtriple=riscv64 -mattr=+a -verify-machineinstrs < %s \
+; RUN:   | FileCheck -check-prefix=RV64IA %s
 
 define i8 @atomic_load_i8_unordered(i8 *%a) nounwind {
 ; RV32I-LABEL: atomic_load_i8_unordered:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    mv a1, zero
 ; RV32I-NEXT:    call __atomic_load_1
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomic_load_i8_unordered:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    lb a0, 0(a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomic_load_i8_unordered:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a1, zero
+; RV64I-NEXT:    call __atomic_load_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomic_load_i8_unordered:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lb a0, 0(a0)
+; RV64IA-NEXT:    ret
   %1 = load atomic i8, i8* %a unordered, align 1
   ret i8 %1
 }
 
 define i8 @atomic_load_i8_monotonic(i8 *%a) nounwind {
 ; RV32I-LABEL: atomic_load_i8_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    mv a1, zero
 ; RV32I-NEXT:    call __atomic_load_1
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomic_load_i8_monotonic:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    lb a0, 0(a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomic_load_i8_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a1, zero
+; RV64I-NEXT:    call __atomic_load_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomic_load_i8_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lb a0, 0(a0)
+; RV64IA-NEXT:    ret
   %1 = load atomic i8, i8* %a monotonic, align 1
   ret i8 %1
 }
 
 define i8 @atomic_load_i8_acquire(i8 *%a) nounwind {
 ; RV32I-LABEL: atomic_load_i8_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a1, zero, 2
 ; RV32I-NEXT:    call __atomic_load_1
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomic_load_i8_acquire:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    lb a0, 0(a0)
 ; RV32IA-NEXT:    fence r, rw
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomic_load_i8_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a1, zero, 2
+; RV64I-NEXT:    call __atomic_load_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomic_load_i8_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lb a0, 0(a0)
+; RV64IA-NEXT:    fence r, rw
+; RV64IA-NEXT:    ret
   %1 = load atomic i8, i8* %a acquire, align 1
   ret i8 %1
 }
 
 define i8 @atomic_load_i8_seq_cst(i8 *%a) nounwind {
 ; RV32I-LABEL: atomic_load_i8_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a1, zero, 5
 ; RV32I-NEXT:    call __atomic_load_1
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomic_load_i8_seq_cst:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    fence rw, rw
 ; RV32IA-NEXT:    lb a0, 0(a0)
 ; RV32IA-NEXT:    fence r, rw
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomic_load_i8_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a1, zero, 5
+; RV64I-NEXT:    call __atomic_load_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomic_load_i8_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    fence rw, rw
+; RV64IA-NEXT:    lb a0, 0(a0)
+; RV64IA-NEXT:    fence r, rw
+; RV64IA-NEXT:    ret
   %1 = load atomic i8, i8* %a seq_cst, align 1
   ret i8 %1
 }
 
 define i16 @atomic_load_i16_unordered(i16 *%a) nounwind {
 ; RV32I-LABEL: atomic_load_i16_unordered:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    mv a1, zero
 ; RV32I-NEXT:    call __atomic_load_2
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomic_load_i16_unordered:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    lh a0, 0(a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomic_load_i16_unordered:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a1, zero
+; RV64I-NEXT:    call __atomic_load_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomic_load_i16_unordered:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lh a0, 0(a0)
+; RV64IA-NEXT:    ret
   %1 = load atomic i16, i16* %a unordered, align 2
   ret i16 %1
 }
 
 define i16 @atomic_load_i16_monotonic(i16 *%a) nounwind {
 ; RV32I-LABEL: atomic_load_i16_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    mv a1, zero
 ; RV32I-NEXT:    call __atomic_load_2
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomic_load_i16_monotonic:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    lh a0, 0(a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomic_load_i16_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a1, zero
+; RV64I-NEXT:    call __atomic_load_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomic_load_i16_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lh a0, 0(a0)
+; RV64IA-NEXT:    ret
   %1 = load atomic i16, i16* %a monotonic, align 2
   ret i16 %1
 }
 
 define i16 @atomic_load_i16_acquire(i16 *%a) nounwind {
 ; RV32I-LABEL: atomic_load_i16_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a1, zero, 2
 ; RV32I-NEXT:    call __atomic_load_2
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomic_load_i16_acquire:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    lh a0, 0(a0)
 ; RV32IA-NEXT:    fence r, rw
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomic_load_i16_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a1, zero, 2
+; RV64I-NEXT:    call __atomic_load_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomic_load_i16_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lh a0, 0(a0)
+; RV64IA-NEXT:    fence r, rw
+; RV64IA-NEXT:    ret
   %1 = load atomic i16, i16* %a acquire, align 2
   ret i16 %1
 }
 
 define i16 @atomic_load_i16_seq_cst(i16 *%a) nounwind {
 ; RV32I-LABEL: atomic_load_i16_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a1, zero, 5
 ; RV32I-NEXT:    call __atomic_load_2
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomic_load_i16_seq_cst:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    fence rw, rw
 ; RV32IA-NEXT:    lh a0, 0(a0)
 ; RV32IA-NEXT:    fence r, rw
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomic_load_i16_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a1, zero, 5
+; RV64I-NEXT:    call __atomic_load_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomic_load_i16_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    fence rw, rw
+; RV64IA-NEXT:    lh a0, 0(a0)
+; RV64IA-NEXT:    fence r, rw
+; RV64IA-NEXT:    ret
   %1 = load atomic i16, i16* %a seq_cst, align 2
   ret i16 %1
 }
 
 define i32 @atomic_load_i32_unordered(i32 *%a) nounwind {
 ; RV32I-LABEL: atomic_load_i32_unordered:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    mv a1, zero
 ; RV32I-NEXT:    call __atomic_load_4
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomic_load_i32_unordered:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    lw a0, 0(a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomic_load_i32_unordered:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a1, zero
+; RV64I-NEXT:    call __atomic_load_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomic_load_i32_unordered:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lw a0, 0(a0)
+; RV64IA-NEXT:    ret
   %1 = load atomic i32, i32* %a unordered, align 4
   ret i32 %1
 }
 
 define i32 @atomic_load_i32_monotonic(i32 *%a) nounwind {
 ; RV32I-LABEL: atomic_load_i32_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    mv a1, zero
 ; RV32I-NEXT:    call __atomic_load_4
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomic_load_i32_monotonic:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    lw a0, 0(a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomic_load_i32_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a1, zero
+; RV64I-NEXT:    call __atomic_load_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomic_load_i32_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lw a0, 0(a0)
+; RV64IA-NEXT:    ret
   %1 = load atomic i32, i32* %a monotonic, align 4
   ret i32 %1
 }
 
 define i32 @atomic_load_i32_acquire(i32 *%a) nounwind {
 ; RV32I-LABEL: atomic_load_i32_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a1, zero, 2
 ; RV32I-NEXT:    call __atomic_load_4
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomic_load_i32_acquire:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    lw a0, 0(a0)
 ; RV32IA-NEXT:    fence r, rw
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomic_load_i32_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a1, zero, 2
+; RV64I-NEXT:    call __atomic_load_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomic_load_i32_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lw a0, 0(a0)
+; RV64IA-NEXT:    fence r, rw
+; RV64IA-NEXT:    ret
   %1 = load atomic i32, i32* %a acquire, align 4
   ret i32 %1
 }
 
 define i32 @atomic_load_i32_seq_cst(i32 *%a) nounwind {
 ; RV32I-LABEL: atomic_load_i32_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a1, zero, 5
 ; RV32I-NEXT:    call __atomic_load_4
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomic_load_i32_seq_cst:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    fence rw, rw
 ; RV32IA-NEXT:    lw a0, 0(a0)
 ; RV32IA-NEXT:    fence r, rw
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomic_load_i32_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a1, zero, 5
+; RV64I-NEXT:    call __atomic_load_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomic_load_i32_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    fence rw, rw
+; RV64IA-NEXT:    lw a0, 0(a0)
+; RV64IA-NEXT:    fence r, rw
+; RV64IA-NEXT:    ret
   %1 = load atomic i32, i32* %a seq_cst, align 4
   ret i32 %1
 }
 
 define i64 @atomic_load_i64_unordered(i64 *%a) nounwind {
 ; RV32I-LABEL: atomic_load_i64_unordered:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    mv a1, zero
 ; RV32I-NEXT:    call __atomic_load_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomic_load_i64_unordered:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    mv a1, zero
 ; RV32IA-NEXT:    call __atomic_load_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomic_load_i64_unordered:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a1, zero
+; RV64I-NEXT:    call __atomic_load_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomic_load_i64_unordered:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    ld a0, 0(a0)
+; RV64IA-NEXT:    ret
   %1 = load atomic i64, i64* %a unordered, align 8
   ret i64 %1
 }
 
 define i64 @atomic_load_i64_monotonic(i64 *%a) nounwind {
 ; RV32I-LABEL: atomic_load_i64_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    mv a1, zero
 ; RV32I-NEXT:    call __atomic_load_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomic_load_i64_monotonic:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    mv a1, zero
 ; RV32IA-NEXT:    call __atomic_load_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomic_load_i64_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a1, zero
+; RV64I-NEXT:    call __atomic_load_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomic_load_i64_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    ld a0, 0(a0)
+; RV64IA-NEXT:    ret
   %1 = load atomic i64, i64* %a monotonic, align 8
   ret i64 %1
 }
 
 define i64 @atomic_load_i64_acquire(i64 *%a) nounwind {
 ; RV32I-LABEL: atomic_load_i64_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a1, zero, 2
 ; RV32I-NEXT:    call __atomic_load_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomic_load_i64_acquire:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    addi a1, zero, 2
 ; RV32IA-NEXT:    call __atomic_load_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomic_load_i64_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a1, zero, 2
+; RV64I-NEXT:    call __atomic_load_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomic_load_i64_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    ld a0, 0(a0)
+; RV64IA-NEXT:    fence r, rw
+; RV64IA-NEXT:    ret
   %1 = load atomic i64, i64* %a acquire, align 8
   ret i64 %1
 }
 
 define i64 @atomic_load_i64_seq_cst(i64 *%a) nounwind {
 ; RV32I-LABEL: atomic_load_i64_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a1, zero, 5
 ; RV32I-NEXT:    call __atomic_load_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomic_load_i64_seq_cst:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    addi a1, zero, 5
 ; RV32IA-NEXT:    call __atomic_load_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomic_load_i64_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a1, zero, 5
+; RV64I-NEXT:    call __atomic_load_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomic_load_i64_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    fence rw, rw
+; RV64IA-NEXT:    ld a0, 0(a0)
+; RV64IA-NEXT:    fence r, rw
+; RV64IA-NEXT:    ret
   %1 = load atomic i64, i64* %a seq_cst, align 8
   ret i64 %1
 }
 
 define void @atomic_store_i8_unordered(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomic_store_i8_unordered:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    mv a2, zero
 ; RV32I-NEXT:    call __atomic_store_1
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomic_store_i8_unordered:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    sb a1, 0(a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomic_store_i8_unordered:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a2, zero
+; RV64I-NEXT:    call __atomic_store_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomic_store_i8_unordered:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    sb a1, 0(a0)
+; RV64IA-NEXT:    ret
   store atomic i8 %b, i8* %a unordered, align 1
   ret void
 }
 
 define void @atomic_store_i8_monotonic(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomic_store_i8_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    mv a2, zero
 ; RV32I-NEXT:    call __atomic_store_1
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomic_store_i8_monotonic:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    sb a1, 0(a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomic_store_i8_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a2, zero
+; RV64I-NEXT:    call __atomic_store_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomic_store_i8_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    sb a1, 0(a0)
+; RV64IA-NEXT:    ret
   store atomic i8 %b, i8* %a monotonic, align 1
   ret void
 }
 
 define void @atomic_store_i8_release(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomic_store_i8_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a2, zero, 3
 ; RV32I-NEXT:    call __atomic_store_1
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomic_store_i8_release:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    fence rw, w
 ; RV32IA-NEXT:    sb a1, 0(a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomic_store_i8_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 3
+; RV64I-NEXT:    call __atomic_store_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomic_store_i8_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    fence rw, w
+; RV64IA-NEXT:    sb a1, 0(a0)
+; RV64IA-NEXT:    ret
   store atomic i8 %b, i8* %a release, align 1
   ret void
 }
 
 define void @atomic_store_i8_seq_cst(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomic_store_i8_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a2, zero, 5
 ; RV32I-NEXT:    call __atomic_store_1
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomic_store_i8_seq_cst:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    fence rw, w
 ; RV32IA-NEXT:    sb a1, 0(a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomic_store_i8_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 5
+; RV64I-NEXT:    call __atomic_store_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomic_store_i8_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    fence rw, w
+; RV64IA-NEXT:    sb a1, 0(a0)
+; RV64IA-NEXT:    ret
   store atomic i8 %b, i8* %a seq_cst, align 1
   ret void
 }
 
 define void @atomic_store_i16_unordered(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomic_store_i16_unordered:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    mv a2, zero
 ; RV32I-NEXT:    call __atomic_store_2
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomic_store_i16_unordered:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    sh a1, 0(a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomic_store_i16_unordered:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a2, zero
+; RV64I-NEXT:    call __atomic_store_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomic_store_i16_unordered:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    sh a1, 0(a0)
+; RV64IA-NEXT:    ret
   store atomic i16 %b, i16* %a unordered, align 2
   ret void
 }
 
 define void @atomic_store_i16_monotonic(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomic_store_i16_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    mv a2, zero
 ; RV32I-NEXT:    call __atomic_store_2
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomic_store_i16_monotonic:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    sh a1, 0(a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomic_store_i16_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a2, zero
+; RV64I-NEXT:    call __atomic_store_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomic_store_i16_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    sh a1, 0(a0)
+; RV64IA-NEXT:    ret
   store atomic i16 %b, i16* %a monotonic, align 2
   ret void
 }
 
 define void @atomic_store_i16_release(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomic_store_i16_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a2, zero, 3
 ; RV32I-NEXT:    call __atomic_store_2
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomic_store_i16_release:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    fence rw, w
 ; RV32IA-NEXT:    sh a1, 0(a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomic_store_i16_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 3
+; RV64I-NEXT:    call __atomic_store_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomic_store_i16_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    fence rw, w
+; RV64IA-NEXT:    sh a1, 0(a0)
+; RV64IA-NEXT:    ret
   store atomic i16 %b, i16* %a release, align 2
   ret void
 }
 
 define void @atomic_store_i16_seq_cst(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomic_store_i16_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a2, zero, 5
 ; RV32I-NEXT:    call __atomic_store_2
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomic_store_i16_seq_cst:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    fence rw, w
 ; RV32IA-NEXT:    sh a1, 0(a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomic_store_i16_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 5
+; RV64I-NEXT:    call __atomic_store_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomic_store_i16_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    fence rw, w
+; RV64IA-NEXT:    sh a1, 0(a0)
+; RV64IA-NEXT:    ret
   store atomic i16 %b, i16* %a seq_cst, align 2
   ret void
 }
 
 define void @atomic_store_i32_unordered(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomic_store_i32_unordered:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    mv a2, zero
 ; RV32I-NEXT:    call __atomic_store_4
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomic_store_i32_unordered:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    sw a1, 0(a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomic_store_i32_unordered:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a2, zero
+; RV64I-NEXT:    call __atomic_store_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomic_store_i32_unordered:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    sw a1, 0(a0)
+; RV64IA-NEXT:    ret
   store atomic i32 %b, i32* %a unordered, align 4
   ret void
 }
 
 define void @atomic_store_i32_monotonic(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomic_store_i32_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    mv a2, zero
 ; RV32I-NEXT:    call __atomic_store_4
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomic_store_i32_monotonic:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    sw a1, 0(a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomic_store_i32_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a2, zero
+; RV64I-NEXT:    call __atomic_store_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomic_store_i32_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    sw a1, 0(a0)
+; RV64IA-NEXT:    ret
   store atomic i32 %b, i32* %a monotonic, align 4
   ret void
 }
 
 define void @atomic_store_i32_release(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomic_store_i32_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a2, zero, 3
 ; RV32I-NEXT:    call __atomic_store_4
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomic_store_i32_release:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    fence rw, w
 ; RV32IA-NEXT:    sw a1, 0(a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomic_store_i32_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 3
+; RV64I-NEXT:    call __atomic_store_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomic_store_i32_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    fence rw, w
+; RV64IA-NEXT:    sw a1, 0(a0)
+; RV64IA-NEXT:    ret
   store atomic i32 %b, i32* %a release, align 4
   ret void
 }
 
 define void @atomic_store_i32_seq_cst(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomic_store_i32_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a2, zero, 5
 ; RV32I-NEXT:    call __atomic_store_4
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomic_store_i32_seq_cst:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    fence rw, w
 ; RV32IA-NEXT:    sw a1, 0(a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomic_store_i32_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 5
+; RV64I-NEXT:    call __atomic_store_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomic_store_i32_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    fence rw, w
+; RV64IA-NEXT:    sw a1, 0(a0)
+; RV64IA-NEXT:    ret
   store atomic i32 %b, i32* %a seq_cst, align 4
   ret void
 }
 
 define void @atomic_store_i64_unordered(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomic_store_i64_unordered:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    mv a3, zero
 ; RV32I-NEXT:    call __atomic_store_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomic_store_i64_unordered:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    mv a3, zero
 ; RV32IA-NEXT:    call __atomic_store_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomic_store_i64_unordered:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a2, zero
+; RV64I-NEXT:    call __atomic_store_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomic_store_i64_unordered:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    sd a1, 0(a0)
+; RV64IA-NEXT:    ret
   store atomic i64 %b, i64* %a unordered, align 8
   ret void
 }
 
 define void @atomic_store_i64_monotonic(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomic_store_i64_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    mv a3, zero
 ; RV32I-NEXT:    call __atomic_store_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomic_store_i64_monotonic:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    mv a3, zero
 ; RV32IA-NEXT:    call __atomic_store_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomic_store_i64_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a2, zero
+; RV64I-NEXT:    call __atomic_store_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomic_store_i64_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    sd a1, 0(a0)
+; RV64IA-NEXT:    ret
   store atomic i64 %b, i64* %a monotonic, align 8
   ret void
 }
 
 define void @atomic_store_i64_release(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomic_store_i64_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a3, zero, 3
 ; RV32I-NEXT:    call __atomic_store_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomic_store_i64_release:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    addi a3, zero, 3
 ; RV32IA-NEXT:    call __atomic_store_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomic_store_i64_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 3
+; RV64I-NEXT:    call __atomic_store_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomic_store_i64_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    fence rw, w
+; RV64IA-NEXT:    sd a1, 0(a0)
+; RV64IA-NEXT:    ret
   store atomic i64 %b, i64* %a release, align 8
   ret void
 }
 
 define void @atomic_store_i64_seq_cst(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomic_store_i64_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a3, zero, 5
 ; RV32I-NEXT:    call __atomic_store_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomic_store_i64_seq_cst:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    addi a3, zero, 5
 ; RV32IA-NEXT:    call __atomic_store_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomic_store_i64_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 5
+; RV64I-NEXT:    call __atomic_store_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomic_store_i64_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    fence rw, w
+; RV64IA-NEXT:    sd a1, 0(a0)
+; RV64IA-NEXT:    ret
   store atomic i64 %b, i64* %a seq_cst, align 8
   ret void
 }

test/CodeGen/RISCV/atomic-rmw.ll

 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
 ; RUN: llc -mtriple=riscv32 -verify-machineinstrs < %s \
 ; RUN:   | FileCheck -check-prefix=RV32I %s
 ; RUN: llc -mtriple=riscv32 -mattr=+a -verify-machineinstrs < %s \
 ; RUN:   | FileCheck -check-prefix=RV32IA %s
+; RUN: llc -mtriple=riscv64 -verify-machineinstrs < %s \
+; RUN:   | FileCheck -check-prefix=RV64I %s
+; RUN: llc -mtriple=riscv64 -mattr=+a -verify-machineinstrs < %s \
+; RUN:   | FileCheck -check-prefix=RV64IA %s
 
 define i8 @atomicrmw_xchg_i8_monotonic(i8* %a, i8 %b) {
 ; RV32I-LABEL: atomicrmw_xchg_i8_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    mv a2, zero
 ; RV32I-NEXT:    call __atomic_exchange_1

 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    and a5, a5, a3
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    sc.w a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB0_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    srl a0, a4, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_xchg_i8_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a2, zero
+; RV64I-NEXT:    call __atomic_exchange_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_xchg_i8_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 255
+; RV64IA-NEXT:    sllw a3, a3, a2
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB0_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w a4, (a0)
+; RV64IA-NEXT:    add a5, zero, a1
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    and a5, a5, a3
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    sc.w a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB0_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    srlw a0, a4, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw xchg i8* %a, i8 %b monotonic
   ret i8 %1
 }
 
 define i8 @atomicrmw_xchg_i8_acquire(i8* %a, i8 %b) {
 ; RV32I-LABEL: atomicrmw_xchg_i8_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    and a5, a5, a3
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    sc.w a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB1_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    srl a0, a4, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_xchg_i8_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 2
+; RV64I-NEXT:    call __atomic_exchange_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_xchg_i8_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 255
+; RV64IA-NEXT:    sllw a3, a3, a2
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB1_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aq a4, (a0)
+; RV64IA-NEXT:    add a5, zero, a1
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    and a5, a5, a3
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    sc.w a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB1_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    srlw a0, a4, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw xchg i8* %a, i8 %b acquire
   ret i8 %1
 }
 
 define i8 @atomicrmw_xchg_i8_release(i8* %a, i8 %b) {
 ; RV32I-LABEL: atomicrmw_xchg_i8_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    and a5, a5, a3
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    sc.w.rl a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB2_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    srl a0, a4, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_xchg_i8_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 3
+; RV64I-NEXT:    call __atomic_exchange_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_xchg_i8_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 255
+; RV64IA-NEXT:    sllw a3, a3, a2
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB2_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w a4, (a0)
+; RV64IA-NEXT:    add a5, zero, a1
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    and a5, a5, a3
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    sc.w.rl a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB2_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    srlw a0, a4, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw xchg i8* %a, i8 %b release
   ret i8 %1
 }
 
 define i8 @atomicrmw_xchg_i8_acq_rel(i8* %a, i8 %b) {
 ; RV32I-LABEL: atomicrmw_xchg_i8_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    and a5, a5, a3
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    sc.w.rl a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB3_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    srl a0, a4, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_xchg_i8_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 4
+; RV64I-NEXT:    call __atomic_exchange_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_xchg_i8_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 255
+; RV64IA-NEXT:    sllw a3, a3, a2
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB3_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aq a4, (a0)
+; RV64IA-NEXT:    add a5, zero, a1
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    and a5, a5, a3
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    sc.w.rl a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB3_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    srlw a0, a4, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw xchg i8* %a, i8 %b acq_rel
   ret i8 %1
 }
 
 define i8 @atomicrmw_xchg_i8_seq_cst(i8* %a, i8 %b) {
 ; RV32I-LABEL: atomicrmw_xchg_i8_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    and a5, a5, a3
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    sc.w.aqrl a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB4_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    srl a0, a4, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_xchg_i8_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 5
+; RV64I-NEXT:    call __atomic_exchange_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_xchg_i8_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 255
+; RV64IA-NEXT:    sllw a3, a3, a2
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB4_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aqrl a4, (a0)
+; RV64IA-NEXT:    add a5, zero, a1
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    and a5, a5, a3
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    sc.w.aqrl a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB4_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    srlw a0, a4, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw xchg i8* %a, i8 %b seq_cst
   ret i8 %1
 }
 
 define i8 @atomicrmw_add_i8_monotonic(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_add_i8_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    and a5, a5, a3
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    sc.w a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB5_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    srl a0, a4, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_add_i8_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a2, zero
+; RV64I-NEXT:    call __atomic_fetch_add_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_add_i8_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 255
+; RV64IA-NEXT:    sllw a3, a3, a2
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB5_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w a4, (a0)
+; RV64IA-NEXT:    add a5, a4, a1
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    and a5, a5, a3
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    sc.w a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB5_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    srlw a0, a4, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw add i8* %a, i8 %b monotonic
   ret i8 %1
 }
 
 define i8 @atomicrmw_add_i8_acquire(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_add_i8_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    and a5, a5, a3
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    sc.w a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB6_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    srl a0, a4, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_add_i8_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 2
+; RV64I-NEXT:    call __atomic_fetch_add_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_add_i8_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 255
+; RV64IA-NEXT:    sllw a3, a3, a2
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB6_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aq a4, (a0)
+; RV64IA-NEXT:    add a5, a4, a1
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    and a5, a5, a3
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    sc.w a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB6_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    srlw a0, a4, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw add i8* %a, i8 %b acquire
   ret i8 %1
 }
 
 define i8 @atomicrmw_add_i8_release(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_add_i8_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    and a5, a5, a3
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    sc.w.rl a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB7_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    srl a0, a4, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_add_i8_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 3
+; RV64I-NEXT:    call __atomic_fetch_add_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_add_i8_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 255
+; RV64IA-NEXT:    sllw a3, a3, a2
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB7_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w a4, (a0)
+; RV64IA-NEXT:    add a5, a4, a1
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    and a5, a5, a3
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    sc.w.rl a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB7_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    srlw a0, a4, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw add i8* %a, i8 %b release
   ret i8 %1
 }
 
 define i8 @atomicrmw_add_i8_acq_rel(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_add_i8_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    and a5, a5, a3
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    sc.w.rl a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB8_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    srl a0, a4, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_add_i8_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 4
+; RV64I-NEXT:    call __atomic_fetch_add_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_add_i8_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 255
+; RV64IA-NEXT:    sllw a3, a3, a2
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB8_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aq a4, (a0)
+; RV64IA-NEXT:    add a5, a4, a1
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    and a5, a5, a3
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    sc.w.rl a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB8_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    srlw a0, a4, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw add i8* %a, i8 %b acq_rel
   ret i8 %1
 }
 
 define i8 @atomicrmw_add_i8_seq_cst(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_add_i8_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    and a5, a5, a3
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    sc.w.aqrl a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB9_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    srl a0, a4, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_add_i8_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 5
+; RV64I-NEXT:    call __atomic_fetch_add_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_add_i8_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 255
+; RV64IA-NEXT:    sllw a3, a3, a2
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB9_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aqrl a4, (a0)
+; RV64IA-NEXT:    add a5, a4, a1
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    and a5, a5, a3
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    sc.w.aqrl a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB9_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    srlw a0, a4, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw add i8* %a, i8 %b seq_cst
   ret i8 %1
 }
 
 define i8 @atomicrmw_sub_i8_monotonic(i8* %a, i8 %b) {
 ; RV32I-LABEL: atomicrmw_sub_i8_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    and a5, a5, a3
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    sc.w a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB10_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    srl a0, a4, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_sub_i8_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a2, zero
+; RV64I-NEXT:    call __atomic_fetch_sub_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_sub_i8_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 255
+; RV64IA-NEXT:    sllw a3, a3, a2
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB10_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w a4, (a0)
+; RV64IA-NEXT:    sub a5, a4, a1
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    and a5, a5, a3
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    sc.w a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB10_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    srlw a0, a4, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw sub i8* %a, i8 %b monotonic
   ret i8 %1
 }
 
 define i8 @atomicrmw_sub_i8_acquire(i8* %a, i8 %b) {
 ; RV32I-LABEL: atomicrmw_sub_i8_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    and a5, a5, a3
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    sc.w a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB11_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    srl a0, a4, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_sub_i8_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 2
+; RV64I-NEXT:    call __atomic_fetch_sub_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_sub_i8_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 255
+; RV64IA-NEXT:    sllw a3, a3, a2
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB11_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aq a4, (a0)
+; RV64IA-NEXT:    sub a5, a4, a1
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    and a5, a5, a3
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    sc.w a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB11_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    srlw a0, a4, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw sub i8* %a, i8 %b acquire
   ret i8 %1
 }
 
 define i8 @atomicrmw_sub_i8_release(i8* %a, i8 %b) {
 ; RV32I-LABEL: atomicrmw_sub_i8_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    and a5, a5, a3
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    sc.w.rl a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB12_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    srl a0, a4, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_sub_i8_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 3
+; RV64I-NEXT:    call __atomic_fetch_sub_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_sub_i8_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 255
+; RV64IA-NEXT:    sllw a3, a3, a2
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB12_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w a4, (a0)
+; RV64IA-NEXT:    sub a5, a4, a1
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    and a5, a5, a3
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    sc.w.rl a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB12_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    srlw a0, a4, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw sub i8* %a, i8 %b release
   ret i8 %1
 }
 
 define i8 @atomicrmw_sub_i8_acq_rel(i8* %a, i8 %b) {
 ; RV32I-LABEL: atomicrmw_sub_i8_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    and a5, a5, a3
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    sc.w.rl a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB13_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    srl a0, a4, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_sub_i8_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 4
+; RV64I-NEXT:    call __atomic_fetch_sub_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_sub_i8_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 255
+; RV64IA-NEXT:    sllw a3, a3, a2
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB13_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aq a4, (a0)
+; RV64IA-NEXT:    sub a5, a4, a1
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    and a5, a5, a3
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    sc.w.rl a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB13_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    srlw a0, a4, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw sub i8* %a, i8 %b acq_rel
   ret i8 %1
 }
 
 define i8 @atomicrmw_sub_i8_seq_cst(i8* %a, i8 %b) {
 ; RV32I-LABEL: atomicrmw_sub_i8_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    and a5, a5, a3
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    sc.w.aqrl a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB14_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    srl a0, a4, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_sub_i8_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 5
+; RV64I-NEXT:    call __atomic_fetch_sub_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_sub_i8_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 255
+; RV64IA-NEXT:    sllw a3, a3, a2
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB14_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aqrl a4, (a0)
+; RV64IA-NEXT:    sub a5, a4, a1
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    and a5, a5, a3
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    sc.w.aqrl a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB14_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    srlw a0, a4, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw sub i8* %a, i8 %b seq_cst
   ret i8 %1
 }
 
 define i8 @atomicrmw_and_i8_monotonic(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_and_i8_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    addi a3, zero, 255
 ; RV32IA-NEXT:    sll a3, a3, a2
 ; RV32IA-NEXT:    not a3, a3
 ; RV32IA-NEXT:    or a1, a3, a1
 ; RV32IA-NEXT:    andi a0, a0, -4
 ; RV32IA-NEXT:    amoand.w a0, a1, (a0)
 ; RV32IA-NEXT:    srl a0, a0, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_and_i8_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a2, zero
+; RV64I-NEXT:    call __atomic_fetch_and_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_and_i8_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    sll a1, a1, a2
+; RV64IA-NEXT:    addi a3, zero, 255
+; RV64IA-NEXT:    sll a3, a3, a2
+; RV64IA-NEXT:    not a3, a3
+; RV64IA-NEXT:    or a1, a3, a1
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:    amoand.w a0, a1, (a0)
+; RV64IA-NEXT:    srlw a0, a0, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw and i8* %a, i8 %b monotonic
   ret i8 %1
 }
 
 define i8 @atomicrmw_and_i8_acquire(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_and_i8_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    addi a3, zero, 255
 ; RV32IA-NEXT:    sll a3, a3, a2
 ; RV32IA-NEXT:    not a3, a3
 ; RV32IA-NEXT:    or a1, a3, a1
 ; RV32IA-NEXT:    andi a0, a0, -4
 ; RV32IA-NEXT:    amoand.w.aq a0, a1, (a0)
 ; RV32IA-NEXT:    srl a0, a0, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_and_i8_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 2
+; RV64I-NEXT:    call __atomic_fetch_and_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_and_i8_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    sll a1, a1, a2
+; RV64IA-NEXT:    addi a3, zero, 255
+; RV64IA-NEXT:    sll a3, a3, a2
+; RV64IA-NEXT:    not a3, a3
+; RV64IA-NEXT:    or a1, a3, a1
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:    amoand.w.aq a0, a1, (a0)
+; RV64IA-NEXT:    srlw a0, a0, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw and i8* %a, i8 %b acquire
   ret i8 %1
 }
 
 define i8 @atomicrmw_and_i8_release(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_and_i8_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    addi a3, zero, 255
 ; RV32IA-NEXT:    sll a3, a3, a2
 ; RV32IA-NEXT:    not a3, a3
 ; RV32IA-NEXT:    or a1, a3, a1
 ; RV32IA-NEXT:    andi a0, a0, -4
 ; RV32IA-NEXT:    amoand.w.rl a0, a1, (a0)
 ; RV32IA-NEXT:    srl a0, a0, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_and_i8_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 3
+; RV64I-NEXT:    call __atomic_fetch_and_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_and_i8_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    sll a1, a1, a2
+; RV64IA-NEXT:    addi a3, zero, 255
+; RV64IA-NEXT:    sll a3, a3, a2
+; RV64IA-NEXT:    not a3, a3
+; RV64IA-NEXT:    or a1, a3, a1
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:    amoand.w.rl a0, a1, (a0)
+; RV64IA-NEXT:    srlw a0, a0, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw and i8* %a, i8 %b release
   ret i8 %1
 }
 
 define i8 @atomicrmw_and_i8_acq_rel(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_and_i8_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    addi a3, zero, 255
 ; RV32IA-NEXT:    sll a3, a3, a2
 ; RV32IA-NEXT:    not a3, a3
 ; RV32IA-NEXT:    or a1, a3, a1
 ; RV32IA-NEXT:    andi a0, a0, -4
 ; RV32IA-NEXT:    amoand.w.aqrl a0, a1, (a0)
 ; RV32IA-NEXT:    srl a0, a0, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_and_i8_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 4
+; RV64I-NEXT:    call __atomic_fetch_and_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_and_i8_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    sll a1, a1, a2
+; RV64IA-NEXT:    addi a3, zero, 255
+; RV64IA-NEXT:    sll a3, a3, a2
+; RV64IA-NEXT:    not a3, a3
+; RV64IA-NEXT:    or a1, a3, a1
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:    amoand.w.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    srlw a0, a0, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw and i8* %a, i8 %b acq_rel
   ret i8 %1
 }
 
 define i8 @atomicrmw_and_i8_seq_cst(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_and_i8_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    addi a3, zero, 255
 ; RV32IA-NEXT:    sll a3, a3, a2
 ; RV32IA-NEXT:    not a3, a3
 ; RV32IA-NEXT:    or a1, a3, a1
 ; RV32IA-NEXT:    andi a0, a0, -4
 ; RV32IA-NEXT:    amoand.w.aqrl a0, a1, (a0)
 ; RV32IA-NEXT:    srl a0, a0, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_and_i8_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 5
+; RV64I-NEXT:    call __atomic_fetch_and_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_and_i8_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    sll a1, a1, a2
+; RV64IA-NEXT:    addi a3, zero, 255
+; RV64IA-NEXT:    sll a3, a3, a2
+; RV64IA-NEXT:    not a3, a3
+; RV64IA-NEXT:    or a1, a3, a1
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:    amoand.w.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    srlw a0, a0, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw and i8* %a, i8 %b seq_cst
   ret i8 %1
 }
 
 define i8 @atomicrmw_nand_i8_monotonic(i8* %a, i8 %b) {
 ; RV32I-LABEL: atomicrmw_nand_i8_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    and a5, a5, a3
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    sc.w a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB20_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    srl a0, a4, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_nand_i8_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a2, zero
+; RV64I-NEXT:    call __atomic_fetch_nand_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_nand_i8_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 255
+; RV64IA-NEXT:    sllw a3, a3, a2
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB20_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w a4, (a0)
+; RV64IA-NEXT:    and a5, a4, a1
+; RV64IA-NEXT:    not a5, a5
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    and a5, a5, a3
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    sc.w a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB20_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    srlw a0, a4, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw nand i8* %a, i8 %b monotonic
   ret i8 %1
 }
 
 define i8 @atomicrmw_nand_i8_acquire(i8* %a, i8 %b) {
 ; RV32I-LABEL: atomicrmw_nand_i8_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    and a5, a5, a3
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    sc.w a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB21_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    srl a0, a4, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_nand_i8_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 2
+; RV64I-NEXT:    call __atomic_fetch_nand_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_nand_i8_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 255
+; RV64IA-NEXT:    sllw a3, a3, a2
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB21_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aq a4, (a0)
+; RV64IA-NEXT:    and a5, a4, a1
+; RV64IA-NEXT:    not a5, a5
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    and a5, a5, a3
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    sc.w a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB21_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    srlw a0, a4, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw nand i8* %a, i8 %b acquire
   ret i8 %1
 }
 
 define i8 @atomicrmw_nand_i8_release(i8* %a, i8 %b) {
 ; RV32I-LABEL: atomicrmw_nand_i8_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    and a5, a5, a3
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    sc.w.rl a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB22_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    srl a0, a4, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_nand_i8_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 3
+; RV64I-NEXT:    call __atomic_fetch_nand_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_nand_i8_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 255
+; RV64IA-NEXT:    sllw a3, a3, a2
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB22_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w a4, (a0)
+; RV64IA-NEXT:    and a5, a4, a1
+; RV64IA-NEXT:    not a5, a5
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    and a5, a5, a3
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    sc.w.rl a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB22_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    srlw a0, a4, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw nand i8* %a, i8 %b release
   ret i8 %1
 }
 
 define i8 @atomicrmw_nand_i8_acq_rel(i8* %a, i8 %b) {
 ; RV32I-LABEL: atomicrmw_nand_i8_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    and a5, a5, a3
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    sc.w.rl a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB23_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    srl a0, a4, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_nand_i8_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 4
+; RV64I-NEXT:    call __atomic_fetch_nand_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_nand_i8_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 255
+; RV64IA-NEXT:    sllw a3, a3, a2
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB23_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aq a4, (a0)
+; RV64IA-NEXT:    and a5, a4, a1
+; RV64IA-NEXT:    not a5, a5
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    and a5, a5, a3
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    sc.w.rl a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB23_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    srlw a0, a4, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw nand i8* %a, i8 %b acq_rel
   ret i8 %1
 }
 
 define i8 @atomicrmw_nand_i8_seq_cst(i8* %a, i8 %b) {
 ; RV32I-LABEL: atomicrmw_nand_i8_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    and a5, a5, a3
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    sc.w.aqrl a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB24_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    srl a0, a4, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_nand_i8_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 5
+; RV64I-NEXT:    call __atomic_fetch_nand_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_nand_i8_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 255
+; RV64IA-NEXT:    sllw a3, a3, a2
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB24_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aqrl a4, (a0)
+; RV64IA-NEXT:    and a5, a4, a1
+; RV64IA-NEXT:    not a5, a5
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    and a5, a5, a3
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    sc.w.aqrl a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB24_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    srlw a0, a4, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw nand i8* %a, i8 %b seq_cst
   ret i8 %1
 }
 
 define i8 @atomicrmw_or_i8_monotonic(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_or_i8_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    andi a1, a1, 255
 ; RV32IA-NEXT:    slli a2, a0, 3
 ; RV32IA-NEXT:    andi a2, a2, 24
 ; RV32IA-NEXT:    sll a1, a1, a2
 ; RV32IA-NEXT:    andi a0, a0, -4
 ; RV32IA-NEXT:    amoor.w a0, a1, (a0)
 ; RV32IA-NEXT:    srl a0, a0, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_or_i8_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a2, zero
+; RV64I-NEXT:    call __atomic_fetch_or_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_or_i8_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    sll a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:    amoor.w a0, a1, (a0)
+; RV64IA-NEXT:    srlw a0, a0, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw or i8* %a, i8 %b monotonic
   ret i8 %1
 }
 
 define i8 @atomicrmw_or_i8_acquire(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_or_i8_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    andi a1, a1, 255
 ; RV32IA-NEXT:    slli a2, a0, 3
 ; RV32IA-NEXT:    andi a2, a2, 24
 ; RV32IA-NEXT:    sll a1, a1, a2
 ; RV32IA-NEXT:    andi a0, a0, -4
 ; RV32IA-NEXT:    amoor.w.aq a0, a1, (a0)
 ; RV32IA-NEXT:    srl a0, a0, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_or_i8_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 2
+; RV64I-NEXT:    call __atomic_fetch_or_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_or_i8_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    sll a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:    amoor.w.aq a0, a1, (a0)
+; RV64IA-NEXT:    srlw a0, a0, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw or i8* %a, i8 %b acquire
   ret i8 %1
 }
 
 define i8 @atomicrmw_or_i8_release(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_or_i8_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    andi a1, a1, 255
 ; RV32IA-NEXT:    slli a2, a0, 3
 ; RV32IA-NEXT:    andi a2, a2, 24
 ; RV32IA-NEXT:    sll a1, a1, a2
 ; RV32IA-NEXT:    andi a0, a0, -4
 ; RV32IA-NEXT:    amoor.w.rl a0, a1, (a0)
 ; RV32IA-NEXT:    srl a0, a0, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_or_i8_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 3
+; RV64I-NEXT:    call __atomic_fetch_or_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_or_i8_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    sll a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:    amoor.w.rl a0, a1, (a0)
+; RV64IA-NEXT:    srlw a0, a0, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw or i8* %a, i8 %b release
   ret i8 %1
 }
 
 define i8 @atomicrmw_or_i8_acq_rel(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_or_i8_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    andi a1, a1, 255
 ; RV32IA-NEXT:    slli a2, a0, 3
 ; RV32IA-NEXT:    andi a2, a2, 24
 ; RV32IA-NEXT:    sll a1, a1, a2
 ; RV32IA-NEXT:    andi a0, a0, -4
 ; RV32IA-NEXT:    amoor.w.aqrl a0, a1, (a0)
 ; RV32IA-NEXT:    srl a0, a0, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_or_i8_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 4
+; RV64I-NEXT:    call __atomic_fetch_or_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_or_i8_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    sll a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:    amoor.w.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    srlw a0, a0, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw or i8* %a, i8 %b acq_rel
   ret i8 %1
 }
 
 define i8 @atomicrmw_or_i8_seq_cst(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_or_i8_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    andi a1, a1, 255
 ; RV32IA-NEXT:    slli a2, a0, 3
 ; RV32IA-NEXT:    andi a2, a2, 24
 ; RV32IA-NEXT:    sll a1, a1, a2
 ; RV32IA-NEXT:    andi a0, a0, -4
 ; RV32IA-NEXT:    amoor.w.aqrl a0, a1, (a0)
 ; RV32IA-NEXT:    srl a0, a0, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_or_i8_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 5
+; RV64I-NEXT:    call __atomic_fetch_or_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_or_i8_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    sll a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:    amoor.w.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    srlw a0, a0, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw or i8* %a, i8 %b seq_cst
   ret i8 %1
 }
 
 define i8 @atomicrmw_xor_i8_monotonic(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_xor_i8_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    andi a1, a1, 255
 ; RV32IA-NEXT:    slli a2, a0, 3
 ; RV32IA-NEXT:    andi a2, a2, 24
 ; RV32IA-NEXT:    sll a1, a1, a2
 ; RV32IA-NEXT:    andi a0, a0, -4
 ; RV32IA-NEXT:    amoxor.w a0, a1, (a0)
 ; RV32IA-NEXT:    srl a0, a0, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_xor_i8_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a2, zero
+; RV64I-NEXT:    call __atomic_fetch_xor_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_xor_i8_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    sll a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:    amoxor.w a0, a1, (a0)
+; RV64IA-NEXT:    srlw a0, a0, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw xor i8* %a, i8 %b monotonic
   ret i8 %1
 }
 
 define i8 @atomicrmw_xor_i8_acquire(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_xor_i8_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    andi a1, a1, 255
 ; RV32IA-NEXT:    slli a2, a0, 3
 ; RV32IA-NEXT:    andi a2, a2, 24
 ; RV32IA-NEXT:    sll a1, a1, a2
 ; RV32IA-NEXT:    andi a0, a0, -4
 ; RV32IA-NEXT:    amoxor.w.aq a0, a1, (a0)
 ; RV32IA-NEXT:    srl a0, a0, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_xor_i8_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 2
+; RV64I-NEXT:    call __atomic_fetch_xor_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_xor_i8_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    sll a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:    amoxor.w.aq a0, a1, (a0)
+; RV64IA-NEXT:    srlw a0, a0, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw xor i8* %a, i8 %b acquire
   ret i8 %1
 }
 
 define i8 @atomicrmw_xor_i8_release(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_xor_i8_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    andi a1, a1, 255
 ; RV32IA-NEXT:    slli a2, a0, 3
 ; RV32IA-NEXT:    andi a2, a2, 24
 ; RV32IA-NEXT:    sll a1, a1, a2
 ; RV32IA-NEXT:    andi a0, a0, -4
 ; RV32IA-NEXT:    amoxor.w.rl a0, a1, (a0)
 ; RV32IA-NEXT:    srl a0, a0, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_xor_i8_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 3
+; RV64I-NEXT:    call __atomic_fetch_xor_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_xor_i8_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    sll a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:    amoxor.w.rl a0, a1, (a0)
+; RV64IA-NEXT:    srlw a0, a0, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw xor i8* %a, i8 %b release
   ret i8 %1
 }
 
 define i8 @atomicrmw_xor_i8_acq_rel(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_xor_i8_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    andi a1, a1, 255
 ; RV32IA-NEXT:    slli a2, a0, 3
 ; RV32IA-NEXT:    andi a2, a2, 24
 ; RV32IA-NEXT:    sll a1, a1, a2
 ; RV32IA-NEXT:    andi a0, a0, -4
 ; RV32IA-NEXT:    amoxor.w.aqrl a0, a1, (a0)
 ; RV32IA-NEXT:    srl a0, a0, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_xor_i8_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 4
+; RV64I-NEXT:    call __atomic_fetch_xor_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_xor_i8_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    sll a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:    amoxor.w.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    srlw a0, a0, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw xor i8* %a, i8 %b acq_rel
   ret i8 %1
 }
 
 define i8 @atomicrmw_xor_i8_seq_cst(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_xor_i8_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    andi a1, a1, 255
 ; RV32IA-NEXT:    slli a2, a0, 3
 ; RV32IA-NEXT:    andi a2, a2, 24
 ; RV32IA-NEXT:    sll a1, a1, a2
 ; RV32IA-NEXT:    andi a0, a0, -4
 ; RV32IA-NEXT:    amoxor.w.aqrl a0, a1, (a0)
 ; RV32IA-NEXT:    srl a0, a0, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_xor_i8_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 5
+; RV64I-NEXT:    call __atomic_fetch_xor_1
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_xor_i8_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    sll a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:    amoxor.w.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    srlw a0, a0, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw xor i8* %a, i8 %b seq_cst
   ret i8 %1
 }
 
 define i8 @atomicrmw_max_i8_monotonic(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_max_i8_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    and a3, a3, a7
 ; RV32IA-NEXT:    xor a3, a5, a3
 ; RV32IA-NEXT:  .LBB35_3: # in Loop: Header=BB35_1 Depth=1
 ; RV32IA-NEXT:    sc.w a3, a3, (a0)
 ; RV32IA-NEXT:    bnez a3, .LBB35_1
 ; RV32IA-NEXT:  # %bb.4:
 ; RV32IA-NEXT:    srl a0, a5, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_max_i8_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -48
+; RV64I-NEXT:    sd ra, 40(sp)
+; RV64I-NEXT:    sd s1, 32(sp)
+; RV64I-NEXT:    sd s2, 24(sp)
+; RV64I-NEXT:    sd s3, 16(sp)
+; RV64I-NEXT:    sd s4, 8(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s4, a0
+; RV64I-NEXT:    lbu a0, 0(a0)
+; RV64I-NEXT:    slli a1, a1, 56
+; RV64I-NEXT:    srai s1, a1, 56
+; RV64I-NEXT:    addi s3, sp, 7
+; RV64I-NEXT:  .LBB35_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    slli a1, a0, 56
+; RV64I-NEXT:    srai a1, a1, 56
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    blt s1, a1, .LBB35_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB35_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB35_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB35_1 Depth=1
+; RV64I-NEXT:    sb a0, 7(sp)
+; RV64I-NEXT:    mv a0, s4
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, zero
+; RV64I-NEXT:    mv a4, zero
+; RV64I-NEXT:    call __atomic_compare_exchange_1
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lb a0, 7(sp)
+; RV64I-NEXT:    beqz a1, .LBB35_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s4, 8(sp)
+; RV64I-NEXT:    ld s3, 16(sp)
+; RV64I-NEXT:    ld s2, 24(sp)
+; RV64I-NEXT:    ld s1, 32(sp)
+; RV64I-NEXT:    ld ra, 40(sp)
+; RV64I-NEXT:    addi sp, sp, 48
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_max_i8_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 56
+; RV64IA-NEXT:    sub a6, a3, a2
+; RV64IA-NEXT:    addi a4, zero, 255
+; RV64IA-NEXT:    sllw a7, a4, a2
+; RV64IA-NEXT:    slli a1, a1, 56
+; RV64IA-NEXT:    srai a1, a1, 56
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB35_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w a5, (a0)
+; RV64IA-NEXT:    and a4, a5, a7
+; RV64IA-NEXT:    mv a3, a5
+; RV64IA-NEXT:    sll a4, a4, a6
+; RV64IA-NEXT:    sra a4, a4, a6
+; RV64IA-NEXT:    bge a4, a1, .LBB35_3
+; RV64IA-NEXT:  # %bb.2: # in Loop: Header=BB35_1 Depth=1
+; RV64IA-NEXT:    xor a3, a5, a1
+; RV64IA-NEXT:    and a3, a3, a7
+; RV64IA-NEXT:    xor a3, a5, a3
+; RV64IA-NEXT:  .LBB35_3: # in Loop: Header=BB35_1 Depth=1
+; RV64IA-NEXT:    sc.w a3, a3, (a0)
+; RV64IA-NEXT:    bnez a3, .LBB35_1
+; RV64IA-NEXT:  # %bb.4:
+; RV64IA-NEXT:    srlw a0, a5, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw max i8* %a, i8 %b monotonic
   ret i8 %1
 }
 
 define i8 @atomicrmw_max_i8_acquire(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_max_i8_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    and a3, a3, a7
 ; RV32IA-NEXT:    xor a3, a5, a3
 ; RV32IA-NEXT:  .LBB36_3: # in Loop: Header=BB36_1 Depth=1
 ; RV32IA-NEXT:    sc.w a3, a3, (a0)
 ; RV32IA-NEXT:    bnez a3, .LBB36_1
 ; RV32IA-NEXT:  # %bb.4:
 ; RV32IA-NEXT:    srl a0, a5, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_max_i8_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s4, a0
+; RV64I-NEXT:    lbu a0, 0(a0)
+; RV64I-NEXT:    slli a1, a1, 56
+; RV64I-NEXT:    srai s5, a1, 56
+; RV64I-NEXT:    addi s3, sp, 15
+; RV64I-NEXT:    addi s1, zero, 2
+; RV64I-NEXT:  .LBB36_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    slli a1, a0, 56
+; RV64I-NEXT:    srai a1, a1, 56
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    blt s5, a1, .LBB36_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB36_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB36_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB36_1 Depth=1
+; RV64I-NEXT:    sb a0, 15(sp)
+; RV64I-NEXT:    mv a0, s4
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s1
+; RV64I-NEXT:    mv a4, s1
+; RV64I-NEXT:    call __atomic_compare_exchange_1
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lb a0, 15(sp)
+; RV64I-NEXT:    beqz a1, .LBB36_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_max_i8_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 56
+; RV64IA-NEXT:    sub a6, a3, a2
+; RV64IA-NEXT:    addi a4, zero, 255
+; RV64IA-NEXT:    sllw a7, a4, a2
+; RV64IA-NEXT:    slli a1, a1, 56
+; RV64IA-NEXT:    srai a1, a1, 56
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB36_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aq a5, (a0)
+; RV64IA-NEXT:    and a4, a5, a7
+; RV64IA-NEXT:    mv a3, a5
+; RV64IA-NEXT:    sll a4, a4, a6
+; RV64IA-NEXT:    sra a4, a4, a6
+; RV64IA-NEXT:    bge a4, a1, .LBB36_3
+; RV64IA-NEXT:  # %bb.2: # in Loop: Header=BB36_1 Depth=1
+; RV64IA-NEXT:    xor a3, a5, a1
+; RV64IA-NEXT:    and a3, a3, a7
+; RV64IA-NEXT:    xor a3, a5, a3
+; RV64IA-NEXT:  .LBB36_3: # in Loop: Header=BB36_1 Depth=1
+; RV64IA-NEXT:    sc.w a3, a3, (a0)
+; RV64IA-NEXT:    bnez a3, .LBB36_1
+; RV64IA-NEXT:  # %bb.4:
+; RV64IA-NEXT:    srlw a0, a5, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw max i8* %a, i8 %b acquire
   ret i8 %1
 }
 
 define i8 @atomicrmw_max_i8_release(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_max_i8_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    and a3, a3, a7
 ; RV32IA-NEXT:    xor a3, a5, a3
 ; RV32IA-NEXT:  .LBB37_3: # in Loop: Header=BB37_1 Depth=1
 ; RV32IA-NEXT:    sc.w.rl a3, a3, (a0)
 ; RV32IA-NEXT:    bnez a3, .LBB37_1
 ; RV32IA-NEXT:  # %bb.4:
 ; RV32IA-NEXT:    srl a0, a5, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_max_i8_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s5, a0
+; RV64I-NEXT:    lbu a0, 0(a0)
+; RV64I-NEXT:    slli a1, a1, 56
+; RV64I-NEXT:    srai s1, a1, 56
+; RV64I-NEXT:    addi s3, sp, 15
+; RV64I-NEXT:    addi s4, zero, 3
+; RV64I-NEXT:  .LBB37_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    slli a1, a0, 56
+; RV64I-NEXT:    srai a1, a1, 56
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    blt s1, a1, .LBB37_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB37_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB37_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB37_1 Depth=1
+; RV64I-NEXT:    sb a0, 15(sp)
+; RV64I-NEXT:    mv a0, s5
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s4
+; RV64I-NEXT:    mv a4, zero
+; RV64I-NEXT:    call __atomic_compare_exchange_1
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lb a0, 15(sp)
+; RV64I-NEXT:    beqz a1, .LBB37_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_max_i8_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 56
+; RV64IA-NEXT:    sub a6, a3, a2
+; RV64IA-NEXT:    addi a4, zero, 255
+; RV64IA-NEXT:    sllw a7, a4, a2
+; RV64IA-NEXT:    slli a1, a1, 56
+; RV64IA-NEXT:    srai a1, a1, 56
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB37_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w a5, (a0)
+; RV64IA-NEXT:    and a4, a5, a7
+; RV64IA-NEXT:    mv a3, a5
+; RV64IA-NEXT:    sll a4, a4, a6
+; RV64IA-NEXT:    sra a4, a4, a6
+; RV64IA-NEXT:    bge a4, a1, .LBB37_3
+; RV64IA-NEXT:  # %bb.2: # in Loop: Header=BB37_1 Depth=1
+; RV64IA-NEXT:    xor a3, a5, a1
+; RV64IA-NEXT:    and a3, a3, a7
+; RV64IA-NEXT:    xor a3, a5, a3
+; RV64IA-NEXT:  .LBB37_3: # in Loop: Header=BB37_1 Depth=1
+; RV64IA-NEXT:    sc.w.rl a3, a3, (a0)
+; RV64IA-NEXT:    bnez a3, .LBB37_1
+; RV64IA-NEXT:  # %bb.4:
+; RV64IA-NEXT:    srlw a0, a5, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw max i8* %a, i8 %b release
   ret i8 %1
 }
 
 define i8 @atomicrmw_max_i8_acq_rel(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_max_i8_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    and a3, a3, a7
 ; RV32IA-NEXT:    xor a3, a5, a3
 ; RV32IA-NEXT:  .LBB38_3: # in Loop: Header=BB38_1 Depth=1
 ; RV32IA-NEXT:    sc.w.rl a3, a3, (a0)
 ; RV32IA-NEXT:    bnez a3, .LBB38_1
 ; RV32IA-NEXT:  # %bb.4:
 ; RV32IA-NEXT:    srl a0, a5, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_max_i8_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    sd s6, 8(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s6, a0
+; RV64I-NEXT:    lbu a0, 0(a0)
+; RV64I-NEXT:    slli a1, a1, 56
+; RV64I-NEXT:    srai s1, a1, 56
+; RV64I-NEXT:    addi s3, sp, 7
+; RV64I-NEXT:    addi s4, zero, 4
+; RV64I-NEXT:    addi s5, zero, 2
+; RV64I-NEXT:  .LBB38_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    slli a1, a0, 56
+; RV64I-NEXT:    srai a1, a1, 56
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    blt s1, a1, .LBB38_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB38_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB38_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB38_1 Depth=1
+; RV64I-NEXT:    sb a0, 7(sp)
+; RV64I-NEXT:    mv a0, s6
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s4
+; RV64I-NEXT:    mv a4, s5
+; RV64I-NEXT:    call __atomic_compare_exchange_1
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lb a0, 7(sp)
+; RV64I-NEXT:    beqz a1, .LBB38_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s6, 8(sp)
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_max_i8_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 56
+; RV64IA-NEXT:    sub a6, a3, a2
+; RV64IA-NEXT:    addi a4, zero, 255
+; RV64IA-NEXT:    sllw a7, a4, a2
+; RV64IA-NEXT:    slli a1, a1, 56
+; RV64IA-NEXT:    srai a1, a1, 56
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB38_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aq a5, (a0)
+; RV64IA-NEXT:    and a4, a5, a7
+; RV64IA-NEXT:    mv a3, a5
+; RV64IA-NEXT:    sll a4, a4, a6
+; RV64IA-NEXT:    sra a4, a4, a6
+; RV64IA-NEXT:    bge a4, a1, .LBB38_3
+; RV64IA-NEXT:  # %bb.2: # in Loop: Header=BB38_1 Depth=1
+; RV64IA-NEXT:    xor a3, a5, a1
+; RV64IA-NEXT:    and a3, a3, a7
+; RV64IA-NEXT:    xor a3, a5, a3
+; RV64IA-NEXT:  .LBB38_3: # in Loop: Header=BB38_1 Depth=1
+; RV64IA-NEXT:    sc.w.rl a3, a3, (a0)
+; RV64IA-NEXT:    bnez a3, .LBB38_1
+; RV64IA-NEXT:  # %bb.4:
+; RV64IA-NEXT:    srlw a0, a5, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw max i8* %a, i8 %b acq_rel
   ret i8 %1
 }
 
 define i8 @atomicrmw_max_i8_seq_cst(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_max_i8_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    and a3, a3, a7
 ; RV32IA-NEXT:    xor a3, a5, a3
 ; RV32IA-NEXT:  .LBB39_3: # in Loop: Header=BB39_1 Depth=1
 ; RV32IA-NEXT:    sc.w.aqrl a3, a3, (a0)
 ; RV32IA-NEXT:    bnez a3, .LBB39_1
 ; RV32IA-NEXT:  # %bb.4:
 ; RV32IA-NEXT:    srl a0, a5, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_max_i8_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s4, a0
+; RV64I-NEXT:    lbu a0, 0(a0)
+; RV64I-NEXT:    slli a1, a1, 56
+; RV64I-NEXT:    srai s5, a1, 56
+; RV64I-NEXT:    addi s3, sp, 15
+; RV64I-NEXT:    addi s1, zero, 5
+; RV64I-NEXT:  .LBB39_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    slli a1, a0, 56
+; RV64I-NEXT:    srai a1, a1, 56
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    blt s5, a1, .LBB39_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB39_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB39_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB39_1 Depth=1
+; RV64I-NEXT:    sb a0, 15(sp)
+; RV64I-NEXT:    mv a0, s4
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s1
+; RV64I-NEXT:    mv a4, s1
+; RV64I-NEXT:    call __atomic_compare_exchange_1
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lb a0, 15(sp)
+; RV64I-NEXT:    beqz a1, .LBB39_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_max_i8_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 56
+; RV64IA-NEXT:    sub a6, a3, a2
+; RV64IA-NEXT:    addi a4, zero, 255
+; RV64IA-NEXT:    sllw a7, a4, a2
+; RV64IA-NEXT:    slli a1, a1, 56
+; RV64IA-NEXT:    srai a1, a1, 56
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB39_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aqrl a5, (a0)
+; RV64IA-NEXT:    and a4, a5, a7
+; RV64IA-NEXT:    mv a3, a5
+; RV64IA-NEXT:    sll a4, a4, a6
+; RV64IA-NEXT:    sra a4, a4, a6
+; RV64IA-NEXT:    bge a4, a1, .LBB39_3
+; RV64IA-NEXT:  # %bb.2: # in Loop: Header=BB39_1 Depth=1
+; RV64IA-NEXT:    xor a3, a5, a1
+; RV64IA-NEXT:    and a3, a3, a7
+; RV64IA-NEXT:    xor a3, a5, a3
+; RV64IA-NEXT:  .LBB39_3: # in Loop: Header=BB39_1 Depth=1
+; RV64IA-NEXT:    sc.w.aqrl a3, a3, (a0)
+; RV64IA-NEXT:    bnez a3, .LBB39_1
+; RV64IA-NEXT:  # %bb.4:
+; RV64IA-NEXT:    srlw a0, a5, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw max i8* %a, i8 %b seq_cst
   ret i8 %1
 }
 
 define i8 @atomicrmw_min_i8_monotonic(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_min_i8_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    and a3, a3, a7
 ; RV32IA-NEXT:    xor a3, a5, a3
 ; RV32IA-NEXT:  .LBB40_3: # in Loop: Header=BB40_1 Depth=1
 ; RV32IA-NEXT:    sc.w a3, a3, (a0)
 ; RV32IA-NEXT:    bnez a3, .LBB40_1
 ; RV32IA-NEXT:  # %bb.4:
 ; RV32IA-NEXT:    srl a0, a5, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_min_i8_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -48
+; RV64I-NEXT:    sd ra, 40(sp)
+; RV64I-NEXT:    sd s1, 32(sp)
+; RV64I-NEXT:    sd s2, 24(sp)
+; RV64I-NEXT:    sd s3, 16(sp)
+; RV64I-NEXT:    sd s4, 8(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s4, a0
+; RV64I-NEXT:    lbu a0, 0(a0)
+; RV64I-NEXT:    slli a1, a1, 56
+; RV64I-NEXT:    srai s1, a1, 56
+; RV64I-NEXT:    addi s3, sp, 7
+; RV64I-NEXT:  .LBB40_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    slli a1, a0, 56
+; RV64I-NEXT:    srai a1, a1, 56
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bge s1, a1, .LBB40_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB40_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB40_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB40_1 Depth=1
+; RV64I-NEXT:    sb a0, 7(sp)
+; RV64I-NEXT:    mv a0, s4
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, zero
+; RV64I-NEXT:    mv a4, zero
+; RV64I-NEXT:    call __atomic_compare_exchange_1
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lb a0, 7(sp)
+; RV64I-NEXT:    beqz a1, .LBB40_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s4, 8(sp)
+; RV64I-NEXT:    ld s3, 16(sp)
+; RV64I-NEXT:    ld s2, 24(sp)
+; RV64I-NEXT:    ld s1, 32(sp)
+; RV64I-NEXT:    ld ra, 40(sp)
+; RV64I-NEXT:    addi sp, sp, 48
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_min_i8_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 56
+; RV64IA-NEXT:    sub a6, a3, a2
+; RV64IA-NEXT:    addi a4, zero, 255
+; RV64IA-NEXT:    sllw a7, a4, a2
+; RV64IA-NEXT:    slli a1, a1, 56
+; RV64IA-NEXT:    srai a1, a1, 56
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB40_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w a5, (a0)
+; RV64IA-NEXT:    and a4, a5, a7
+; RV64IA-NEXT:    mv a3, a5
+; RV64IA-NEXT:    sll a4, a4, a6
+; RV64IA-NEXT:    sra a4, a4, a6
+; RV64IA-NEXT:    bge a1, a4, .LBB40_3
+; RV64IA-NEXT:  # %bb.2: # in Loop: Header=BB40_1 Depth=1
+; RV64IA-NEXT:    xor a3, a5, a1
+; RV64IA-NEXT:    and a3, a3, a7
+; RV64IA-NEXT:    xor a3, a5, a3
+; RV64IA-NEXT:  .LBB40_3: # in Loop: Header=BB40_1 Depth=1
+; RV64IA-NEXT:    sc.w a3, a3, (a0)
+; RV64IA-NEXT:    bnez a3, .LBB40_1
+; RV64IA-NEXT:  # %bb.4:
+; RV64IA-NEXT:    srlw a0, a5, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw min i8* %a, i8 %b monotonic
   ret i8 %1
 }
 
 define i8 @atomicrmw_min_i8_acquire(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_min_i8_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    and a3, a3, a7
 ; RV32IA-NEXT:    xor a3, a5, a3
 ; RV32IA-NEXT:  .LBB41_3: # in Loop: Header=BB41_1 Depth=1
 ; RV32IA-NEXT:    sc.w a3, a3, (a0)
 ; RV32IA-NEXT:    bnez a3, .LBB41_1
 ; RV32IA-NEXT:  # %bb.4:
 ; RV32IA-NEXT:    srl a0, a5, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_min_i8_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s4, a0
+; RV64I-NEXT:    lbu a0, 0(a0)
+; RV64I-NEXT:    slli a1, a1, 56
+; RV64I-NEXT:    srai s5, a1, 56
+; RV64I-NEXT:    addi s3, sp, 15
+; RV64I-NEXT:    addi s1, zero, 2
+; RV64I-NEXT:  .LBB41_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    slli a1, a0, 56
+; RV64I-NEXT:    srai a1, a1, 56
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bge s5, a1, .LBB41_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB41_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB41_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB41_1 Depth=1
+; RV64I-NEXT:    sb a0, 15(sp)
+; RV64I-NEXT:    mv a0, s4
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s1
+; RV64I-NEXT:    mv a4, s1
+; RV64I-NEXT:    call __atomic_compare_exchange_1
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lb a0, 15(sp)
+; RV64I-NEXT:    beqz a1, .LBB41_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_min_i8_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 56
+; RV64IA-NEXT:    sub a6, a3, a2
+; RV64IA-NEXT:    addi a4, zero, 255
+; RV64IA-NEXT:    sllw a7, a4, a2
+; RV64IA-NEXT:    slli a1, a1, 56
+; RV64IA-NEXT:    srai a1, a1, 56
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB41_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aq a5, (a0)
+; RV64IA-NEXT:    and a4, a5, a7
+; RV64IA-NEXT:    mv a3, a5
+; RV64IA-NEXT:    sll a4, a4, a6
+; RV64IA-NEXT:    sra a4, a4, a6
+; RV64IA-NEXT:    bge a1, a4, .LBB41_3
+; RV64IA-NEXT:  # %bb.2: # in Loop: Header=BB41_1 Depth=1
+; RV64IA-NEXT:    xor a3, a5, a1
+; RV64IA-NEXT:    and a3, a3, a7
+; RV64IA-NEXT:    xor a3, a5, a3
+; RV64IA-NEXT:  .LBB41_3: # in Loop: Header=BB41_1 Depth=1
+; RV64IA-NEXT:    sc.w a3, a3, (a0)
+; RV64IA-NEXT:    bnez a3, .LBB41_1
+; RV64IA-NEXT:  # %bb.4:
+; RV64IA-NEXT:    srlw a0, a5, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw min i8* %a, i8 %b acquire
   ret i8 %1
 }
 
 define i8 @atomicrmw_min_i8_release(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_min_i8_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    and a3, a3, a7
 ; RV32IA-NEXT:    xor a3, a5, a3
 ; RV32IA-NEXT:  .LBB42_3: # in Loop: Header=BB42_1 Depth=1
 ; RV32IA-NEXT:    sc.w.rl a3, a3, (a0)
 ; RV32IA-NEXT:    bnez a3, .LBB42_1
 ; RV32IA-NEXT:  # %bb.4:
 ; RV32IA-NEXT:    srl a0, a5, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_min_i8_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s5, a0
+; RV64I-NEXT:    lbu a0, 0(a0)
+; RV64I-NEXT:    slli a1, a1, 56
+; RV64I-NEXT:    srai s1, a1, 56
+; RV64I-NEXT:    addi s3, sp, 15
+; RV64I-NEXT:    addi s4, zero, 3
+; RV64I-NEXT:  .LBB42_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    slli a1, a0, 56
+; RV64I-NEXT:    srai a1, a1, 56
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bge s1, a1, .LBB42_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB42_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB42_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB42_1 Depth=1
+; RV64I-NEXT:    sb a0, 15(sp)
+; RV64I-NEXT:    mv a0, s5
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s4
+; RV64I-NEXT:    mv a4, zero
+; RV64I-NEXT:    call __atomic_compare_exchange_1
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lb a0, 15(sp)
+; RV64I-NEXT:    beqz a1, .LBB42_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_min_i8_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 56
+; RV64IA-NEXT:    sub a6, a3, a2
+; RV64IA-NEXT:    addi a4, zero, 255
+; RV64IA-NEXT:    sllw a7, a4, a2
+; RV64IA-NEXT:    slli a1, a1, 56
+; RV64IA-NEXT:    srai a1, a1, 56
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB42_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w a5, (a0)
+; RV64IA-NEXT:    and a4, a5, a7
+; RV64IA-NEXT:    mv a3, a5
+; RV64IA-NEXT:    sll a4, a4, a6
+; RV64IA-NEXT:    sra a4, a4, a6
+; RV64IA-NEXT:    bge a1, a4, .LBB42_3
+; RV64IA-NEXT:  # %bb.2: # in Loop: Header=BB42_1 Depth=1
+; RV64IA-NEXT:    xor a3, a5, a1
+; RV64IA-NEXT:    and a3, a3, a7
+; RV64IA-NEXT:    xor a3, a5, a3
+; RV64IA-NEXT:  .LBB42_3: # in Loop: Header=BB42_1 Depth=1
+; RV64IA-NEXT:    sc.w.rl a3, a3, (a0)
+; RV64IA-NEXT:    bnez a3, .LBB42_1
+; RV64IA-NEXT:  # %bb.4:
+; RV64IA-NEXT:    srlw a0, a5, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw min i8* %a, i8 %b release
   ret i8 %1
 }
 
 define i8 @atomicrmw_min_i8_acq_rel(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_min_i8_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    and a3, a3, a7
 ; RV32IA-NEXT:    xor a3, a5, a3
 ; RV32IA-NEXT:  .LBB43_3: # in Loop: Header=BB43_1 Depth=1
 ; RV32IA-NEXT:    sc.w.rl a3, a3, (a0)
 ; RV32IA-NEXT:    bnez a3, .LBB43_1
 ; RV32IA-NEXT:  # %bb.4:
 ; RV32IA-NEXT:    srl a0, a5, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_min_i8_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    sd s6, 8(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s6, a0
+; RV64I-NEXT:    lbu a0, 0(a0)
+; RV64I-NEXT:    slli a1, a1, 56
+; RV64I-NEXT:    srai s1, a1, 56
+; RV64I-NEXT:    addi s3, sp, 7
+; RV64I-NEXT:    addi s4, zero, 4
+; RV64I-NEXT:    addi s5, zero, 2
+; RV64I-NEXT:  .LBB43_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    slli a1, a0, 56
+; RV64I-NEXT:    srai a1, a1, 56
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bge s1, a1, .LBB43_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB43_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB43_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB43_1 Depth=1
+; RV64I-NEXT:    sb a0, 7(sp)
+; RV64I-NEXT:    mv a0, s6
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s4
+; RV64I-NEXT:    mv a4, s5
+; RV64I-NEXT:    call __atomic_compare_exchange_1
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lb a0, 7(sp)
+; RV64I-NEXT:    beqz a1, .LBB43_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s6, 8(sp)
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_min_i8_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 56
+; RV64IA-NEXT:    sub a6, a3, a2
+; RV64IA-NEXT:    addi a4, zero, 255
+; RV64IA-NEXT:    sllw a7, a4, a2
+; RV64IA-NEXT:    slli a1, a1, 56
+; RV64IA-NEXT:    srai a1, a1, 56
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB43_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aq a5, (a0)
+; RV64IA-NEXT:    and a4, a5, a7
+; RV64IA-NEXT:    mv a3, a5
+; RV64IA-NEXT:    sll a4, a4, a6
+; RV64IA-NEXT:    sra a4, a4, a6
+; RV64IA-NEXT:    bge a1, a4, .LBB43_3
+; RV64IA-NEXT:  # %bb.2: # in Loop: Header=BB43_1 Depth=1
+; RV64IA-NEXT:    xor a3, a5, a1
+; RV64IA-NEXT:    and a3, a3, a7
+; RV64IA-NEXT:    xor a3, a5, a3
+; RV64IA-NEXT:  .LBB43_3: # in Loop: Header=BB43_1 Depth=1
+; RV64IA-NEXT:    sc.w.rl a3, a3, (a0)
+; RV64IA-NEXT:    bnez a3, .LBB43_1
+; RV64IA-NEXT:  # %bb.4:
+; RV64IA-NEXT:    srlw a0, a5, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw min i8* %a, i8 %b acq_rel
   ret i8 %1
 }
 
 define i8 @atomicrmw_min_i8_seq_cst(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_min_i8_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    and a3, a3, a7
 ; RV32IA-NEXT:    xor a3, a5, a3
 ; RV32IA-NEXT:  .LBB44_3: # in Loop: Header=BB44_1 Depth=1
 ; RV32IA-NEXT:    sc.w.aqrl a3, a3, (a0)
 ; RV32IA-NEXT:    bnez a3, .LBB44_1
 ; RV32IA-NEXT:  # %bb.4:
 ; RV32IA-NEXT:    srl a0, a5, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_min_i8_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s4, a0
+; RV64I-NEXT:    lbu a0, 0(a0)
+; RV64I-NEXT:    slli a1, a1, 56
+; RV64I-NEXT:    srai s5, a1, 56
+; RV64I-NEXT:    addi s3, sp, 15
+; RV64I-NEXT:    addi s1, zero, 5
+; RV64I-NEXT:  .LBB44_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    slli a1, a0, 56
+; RV64I-NEXT:    srai a1, a1, 56
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bge s5, a1, .LBB44_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB44_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB44_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB44_1 Depth=1
+; RV64I-NEXT:    sb a0, 15(sp)
+; RV64I-NEXT:    mv a0, s4
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s1
+; RV64I-NEXT:    mv a4, s1
+; RV64I-NEXT:    call __atomic_compare_exchange_1
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lb a0, 15(sp)
+; RV64I-NEXT:    beqz a1, .LBB44_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_min_i8_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 56
+; RV64IA-NEXT:    sub a6, a3, a2
+; RV64IA-NEXT:    addi a4, zero, 255
+; RV64IA-NEXT:    sllw a7, a4, a2
+; RV64IA-NEXT:    slli a1, a1, 56
+; RV64IA-NEXT:    srai a1, a1, 56
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB44_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aqrl a5, (a0)
+; RV64IA-NEXT:    and a4, a5, a7
+; RV64IA-NEXT:    mv a3, a5
+; RV64IA-NEXT:    sll a4, a4, a6
+; RV64IA-NEXT:    sra a4, a4, a6
+; RV64IA-NEXT:    bge a1, a4, .LBB44_3
+; RV64IA-NEXT:  # %bb.2: # in Loop: Header=BB44_1 Depth=1
+; RV64IA-NEXT:    xor a3, a5, a1
+; RV64IA-NEXT:    and a3, a3, a7
+; RV64IA-NEXT:    xor a3, a5, a3
+; RV64IA-NEXT:  .LBB44_3: # in Loop: Header=BB44_1 Depth=1
+; RV64IA-NEXT:    sc.w.aqrl a3, a3, (a0)
+; RV64IA-NEXT:    bnez a3, .LBB44_1
+; RV64IA-NEXT:  # %bb.4:
+; RV64IA-NEXT:    srlw a0, a5, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw min i8* %a, i8 %b seq_cst
   ret i8 %1
 }
 
 define i8 @atomicrmw_umax_i8_monotonic(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_umax_i8_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    and a5, a5, a6
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:  .LBB45_3: # in Loop: Header=BB45_1 Depth=1
 ; RV32IA-NEXT:    sc.w a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB45_1
 ; RV32IA-NEXT:  # %bb.4:
 ; RV32IA-NEXT:    srl a0, a4, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_umax_i8_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -48
+; RV64I-NEXT:    sd ra, 40(sp)
+; RV64I-NEXT:    sd s1, 32(sp)
+; RV64I-NEXT:    sd s2, 24(sp)
+; RV64I-NEXT:    sd s3, 16(sp)
+; RV64I-NEXT:    sd s4, 8(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s4, a0
+; RV64I-NEXT:    lbu a0, 0(a0)
+; RV64I-NEXT:    andi s1, a1, 255
+; RV64I-NEXT:    addi s3, sp, 7
+; RV64I-NEXT:  .LBB45_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    andi a1, a0, 255
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bltu s1, a1, .LBB45_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB45_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB45_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB45_1 Depth=1
+; RV64I-NEXT:    sb a0, 7(sp)
+; RV64I-NEXT:    mv a0, s4
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, zero
+; RV64I-NEXT:    mv a4, zero
+; RV64I-NEXT:    call __atomic_compare_exchange_1
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lb a0, 7(sp)
+; RV64I-NEXT:    beqz a1, .LBB45_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s4, 8(sp)
+; RV64I-NEXT:    ld s3, 16(sp)
+; RV64I-NEXT:    ld s2, 24(sp)
+; RV64I-NEXT:    ld s1, 32(sp)
+; RV64I-NEXT:    ld ra, 40(sp)
+; RV64I-NEXT:    addi sp, sp, 48
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_umax_i8_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 255
+; RV64IA-NEXT:    sllw a6, a3, a2
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB45_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w a4, (a0)
+; RV64IA-NEXT:    and a3, a4, a6
+; RV64IA-NEXT:    mv a5, a4
+; RV64IA-NEXT:    bgeu a3, a1, .LBB45_3
+; RV64IA-NEXT:  # %bb.2: # in Loop: Header=BB45_1 Depth=1
+; RV64IA-NEXT:    xor a5, a4, a1
+; RV64IA-NEXT:    and a5, a5, a6
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:  .LBB45_3: # in Loop: Header=BB45_1 Depth=1
+; RV64IA-NEXT:    sc.w a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB45_1
+; RV64IA-NEXT:  # %bb.4:
+; RV64IA-NEXT:    srlw a0, a4, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw umax i8* %a, i8 %b monotonic
   ret i8 %1
 }
 
 define i8 @atomicrmw_umax_i8_acquire(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_umax_i8_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    and a5, a5, a6
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:  .LBB46_3: # in Loop: Header=BB46_1 Depth=1
 ; RV32IA-NEXT:    sc.w a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB46_1
 ; RV32IA-NEXT:  # %bb.4:
 ; RV32IA-NEXT:    srl a0, a4, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_umax_i8_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s4, a0
+; RV64I-NEXT:    lbu a0, 0(a0)
+; RV64I-NEXT:    andi s5, a1, 255
+; RV64I-NEXT:    addi s3, sp, 15
+; RV64I-NEXT:    addi s1, zero, 2
+; RV64I-NEXT:  .LBB46_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    andi a1, a0, 255
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bltu s5, a1, .LBB46_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB46_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB46_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB46_1 Depth=1
+; RV64I-NEXT:    sb a0, 15(sp)
+; RV64I-NEXT:    mv a0, s4
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s1
+; RV64I-NEXT:    mv a4, s1
+; RV64I-NEXT:    call __atomic_compare_exchange_1
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lb a0, 15(sp)
+; RV64I-NEXT:    beqz a1, .LBB46_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_umax_i8_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 255
+; RV64IA-NEXT:    sllw a6, a3, a2
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB46_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aq a4, (a0)
+; RV64IA-NEXT:    and a3, a4, a6
+; RV64IA-NEXT:    mv a5, a4
+; RV64IA-NEXT:    bgeu a3, a1, .LBB46_3
+; RV64IA-NEXT:  # %bb.2: # in Loop: Header=BB46_1 Depth=1
+; RV64IA-NEXT:    xor a5, a4, a1
+; RV64IA-NEXT:    and a5, a5, a6
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:  .LBB46_3: # in Loop: Header=BB46_1 Depth=1
+; RV64IA-NEXT:    sc.w a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB46_1
+; RV64IA-NEXT:  # %bb.4:
+; RV64IA-NEXT:    srlw a0, a4, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw umax i8* %a, i8 %b acquire
   ret i8 %1
 }
 
 define i8 @atomicrmw_umax_i8_release(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_umax_i8_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    and a5, a5, a6
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:  .LBB47_3: # in Loop: Header=BB47_1 Depth=1
 ; RV32IA-NEXT:    sc.w.rl a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB47_1
 ; RV32IA-NEXT:  # %bb.4:
 ; RV32IA-NEXT:    srl a0, a4, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_umax_i8_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s5, a0
+; RV64I-NEXT:    lbu a0, 0(a0)
+; RV64I-NEXT:    andi s1, a1, 255
+; RV64I-NEXT:    addi s3, sp, 15
+; RV64I-NEXT:    addi s4, zero, 3
+; RV64I-NEXT:  .LBB47_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    andi a1, a0, 255
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bltu s1, a1, .LBB47_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB47_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB47_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB47_1 Depth=1
+; RV64I-NEXT:    sb a0, 15(sp)
+; RV64I-NEXT:    mv a0, s5
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s4
+; RV64I-NEXT:    mv a4, zero
+; RV64I-NEXT:    call __atomic_compare_exchange_1
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lb a0, 15(sp)
+; RV64I-NEXT:    beqz a1, .LBB47_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_umax_i8_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 255
+; RV64IA-NEXT:    sllw a6, a3, a2
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB47_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w a4, (a0)
+; RV64IA-NEXT:    and a3, a4, a6
+; RV64IA-NEXT:    mv a5, a4
+; RV64IA-NEXT:    bgeu a3, a1, .LBB47_3
+; RV64IA-NEXT:  # %bb.2: # in Loop: Header=BB47_1 Depth=1
+; RV64IA-NEXT:    xor a5, a4, a1
+; RV64IA-NEXT:    and a5, a5, a6
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:  .LBB47_3: # in Loop: Header=BB47_1 Depth=1
+; RV64IA-NEXT:    sc.w.rl a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB47_1
+; RV64IA-NEXT:  # %bb.4:
+; RV64IA-NEXT:    srlw a0, a4, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw umax i8* %a, i8 %b release
   ret i8 %1
 }
 
 define i8 @atomicrmw_umax_i8_acq_rel(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_umax_i8_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    and a5, a5, a6
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:  .LBB48_3: # in Loop: Header=BB48_1 Depth=1
 ; RV32IA-NEXT:    sc.w.rl a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB48_1
 ; RV32IA-NEXT:  # %bb.4:
 ; RV32IA-NEXT:    srl a0, a4, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_umax_i8_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    sd s6, 8(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s6, a0
+; RV64I-NEXT:    lbu a0, 0(a0)
+; RV64I-NEXT:    andi s1, a1, 255
+; RV64I-NEXT:    addi s3, sp, 7
+; RV64I-NEXT:    addi s4, zero, 4
+; RV64I-NEXT:    addi s5, zero, 2
+; RV64I-NEXT:  .LBB48_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    andi a1, a0, 255
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bltu s1, a1, .LBB48_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB48_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB48_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB48_1 Depth=1
+; RV64I-NEXT:    sb a0, 7(sp)
+; RV64I-NEXT:    mv a0, s6
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s4
+; RV64I-NEXT:    mv a4, s5
+; RV64I-NEXT:    call __atomic_compare_exchange_1
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lb a0, 7(sp)
+; RV64I-NEXT:    beqz a1, .LBB48_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s6, 8(sp)
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_umax_i8_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 255
+; RV64IA-NEXT:    sllw a6, a3, a2
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB48_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aq a4, (a0)
+; RV64IA-NEXT:    and a3, a4, a6
+; RV64IA-NEXT:    mv a5, a4
+; RV64IA-NEXT:    bgeu a3, a1, .LBB48_3
+; RV64IA-NEXT:  # %bb.2: # in Loop: Header=BB48_1 Depth=1
+; RV64IA-NEXT:    xor a5, a4, a1
+; RV64IA-NEXT:    and a5, a5, a6
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:  .LBB48_3: # in Loop: Header=BB48_1 Depth=1
+; RV64IA-NEXT:    sc.w.rl a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB48_1
+; RV64IA-NEXT:  # %bb.4:
+; RV64IA-NEXT:    srlw a0, a4, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw umax i8* %a, i8 %b acq_rel
   ret i8 %1
 }
 
 define i8 @atomicrmw_umax_i8_seq_cst(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_umax_i8_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    and a5, a5, a6
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:  .LBB49_3: # in Loop: Header=BB49_1 Depth=1
 ; RV32IA-NEXT:    sc.w.aqrl a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB49_1
 ; RV32IA-NEXT:  # %bb.4:
 ; RV32IA-NEXT:    srl a0, a4, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_umax_i8_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s4, a0
+; RV64I-NEXT:    lbu a0, 0(a0)
+; RV64I-NEXT:    andi s5, a1, 255
+; RV64I-NEXT:    addi s3, sp, 15
+; RV64I-NEXT:    addi s1, zero, 5
+; RV64I-NEXT:  .LBB49_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    andi a1, a0, 255
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bltu s5, a1, .LBB49_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB49_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB49_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB49_1 Depth=1
+; RV64I-NEXT:    sb a0, 15(sp)
+; RV64I-NEXT:    mv a0, s4
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s1
+; RV64I-NEXT:    mv a4, s1
+; RV64I-NEXT:    call __atomic_compare_exchange_1
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lb a0, 15(sp)
+; RV64I-NEXT:    beqz a1, .LBB49_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_umax_i8_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 255
+; RV64IA-NEXT:    sllw a6, a3, a2
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB49_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aqrl a4, (a0)
+; RV64IA-NEXT:    and a3, a4, a6
+; RV64IA-NEXT:    mv a5, a4
+; RV64IA-NEXT:    bgeu a3, a1, .LBB49_3
+; RV64IA-NEXT:  # %bb.2: # in Loop: Header=BB49_1 Depth=1
+; RV64IA-NEXT:    xor a5, a4, a1
+; RV64IA-NEXT:    and a5, a5, a6
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:  .LBB49_3: # in Loop: Header=BB49_1 Depth=1
+; RV64IA-NEXT:    sc.w.aqrl a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB49_1
+; RV64IA-NEXT:  # %bb.4:
+; RV64IA-NEXT:    srlw a0, a4, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw umax i8* %a, i8 %b seq_cst
   ret i8 %1
 }
 
 define i8 @atomicrmw_umin_i8_monotonic(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_umin_i8_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    and a5, a5, a6
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:  .LBB50_3: # in Loop: Header=BB50_1 Depth=1
 ; RV32IA-NEXT:    sc.w a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB50_1
 ; RV32IA-NEXT:  # %bb.4:
 ; RV32IA-NEXT:    srl a0, a4, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_umin_i8_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -48
+; RV64I-NEXT:    sd ra, 40(sp)
+; RV64I-NEXT:    sd s1, 32(sp)
+; RV64I-NEXT:    sd s2, 24(sp)
+; RV64I-NEXT:    sd s3, 16(sp)
+; RV64I-NEXT:    sd s4, 8(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s4, a0
+; RV64I-NEXT:    lbu a0, 0(a0)
+; RV64I-NEXT:    andi s1, a1, 255
+; RV64I-NEXT:    addi s3, sp, 7
+; RV64I-NEXT:  .LBB50_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    andi a1, a0, 255
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bgeu s1, a1, .LBB50_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB50_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB50_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB50_1 Depth=1
+; RV64I-NEXT:    sb a0, 7(sp)
+; RV64I-NEXT:    mv a0, s4
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, zero
+; RV64I-NEXT:    mv a4, zero
+; RV64I-NEXT:    call __atomic_compare_exchange_1
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lb a0, 7(sp)
+; RV64I-NEXT:    beqz a1, .LBB50_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s4, 8(sp)
+; RV64I-NEXT:    ld s3, 16(sp)
+; RV64I-NEXT:    ld s2, 24(sp)
+; RV64I-NEXT:    ld s1, 32(sp)
+; RV64I-NEXT:    ld ra, 40(sp)
+; RV64I-NEXT:    addi sp, sp, 48
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_umin_i8_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 255
+; RV64IA-NEXT:    sllw a6, a3, a2
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB50_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w a4, (a0)
+; RV64IA-NEXT:    and a3, a4, a6
+; RV64IA-NEXT:    mv a5, a4
+; RV64IA-NEXT:    bgeu a1, a3, .LBB50_3
+; RV64IA-NEXT:  # %bb.2: # in Loop: Header=BB50_1 Depth=1
+; RV64IA-NEXT:    xor a5, a4, a1
+; RV64IA-NEXT:    and a5, a5, a6
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:  .LBB50_3: # in Loop: Header=BB50_1 Depth=1
+; RV64IA-NEXT:    sc.w a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB50_1
+; RV64IA-NEXT:  # %bb.4:
+; RV64IA-NEXT:    srlw a0, a4, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw umin i8* %a, i8 %b monotonic
   ret i8 %1
 }
 
 define i8 @atomicrmw_umin_i8_acquire(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_umin_i8_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    and a5, a5, a6
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:  .LBB51_3: # in Loop: Header=BB51_1 Depth=1
 ; RV32IA-NEXT:    sc.w a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB51_1
 ; RV32IA-NEXT:  # %bb.4:
 ; RV32IA-NEXT:    srl a0, a4, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_umin_i8_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s4, a0
+; RV64I-NEXT:    lbu a0, 0(a0)
+; RV64I-NEXT:    andi s5, a1, 255
+; RV64I-NEXT:    addi s3, sp, 15
+; RV64I-NEXT:    addi s1, zero, 2
+; RV64I-NEXT:  .LBB51_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    andi a1, a0, 255
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bgeu s5, a1, .LBB51_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB51_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB51_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB51_1 Depth=1
+; RV64I-NEXT:    sb a0, 15(sp)
+; RV64I-NEXT:    mv a0, s4
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s1
+; RV64I-NEXT:    mv a4, s1
+; RV64I-NEXT:    call __atomic_compare_exchange_1
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lb a0, 15(sp)
+; RV64I-NEXT:    beqz a1, .LBB51_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_umin_i8_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 255
+; RV64IA-NEXT:    sllw a6, a3, a2
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB51_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aq a4, (a0)
+; RV64IA-NEXT:    and a3, a4, a6
+; RV64IA-NEXT:    mv a5, a4
+; RV64IA-NEXT:    bgeu a1, a3, .LBB51_3
+; RV64IA-NEXT:  # %bb.2: # in Loop: Header=BB51_1 Depth=1
+; RV64IA-NEXT:    xor a5, a4, a1
+; RV64IA-NEXT:    and a5, a5, a6
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:  .LBB51_3: # in Loop: Header=BB51_1 Depth=1
+; RV64IA-NEXT:    sc.w a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB51_1
+; RV64IA-NEXT:  # %bb.4:
+; RV64IA-NEXT:    srlw a0, a4, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw umin i8* %a, i8 %b acquire
   ret i8 %1
 }
 
 define i8 @atomicrmw_umin_i8_release(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_umin_i8_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    and a5, a5, a6
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:  .LBB52_3: # in Loop: Header=BB52_1 Depth=1
 ; RV32IA-NEXT:    sc.w.rl a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB52_1
 ; RV32IA-NEXT:  # %bb.4:
 ; RV32IA-NEXT:    srl a0, a4, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_umin_i8_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s5, a0
+; RV64I-NEXT:    lbu a0, 0(a0)
+; RV64I-NEXT:    andi s1, a1, 255
+; RV64I-NEXT:    addi s3, sp, 15
+; RV64I-NEXT:    addi s4, zero, 3
+; RV64I-NEXT:  .LBB52_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    andi a1, a0, 255
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bgeu s1, a1, .LBB52_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB52_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB52_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB52_1 Depth=1
+; RV64I-NEXT:    sb a0, 15(sp)
+; RV64I-NEXT:    mv a0, s5
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s4
+; RV64I-NEXT:    mv a4, zero
+; RV64I-NEXT:    call __atomic_compare_exchange_1
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lb a0, 15(sp)
+; RV64I-NEXT:    beqz a1, .LBB52_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_umin_i8_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 255
+; RV64IA-NEXT:    sllw a6, a3, a2
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB52_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w a4, (a0)
+; RV64IA-NEXT:    and a3, a4, a6
+; RV64IA-NEXT:    mv a5, a4
+; RV64IA-NEXT:    bgeu a1, a3, .LBB52_3
+; RV64IA-NEXT:  # %bb.2: # in Loop: Header=BB52_1 Depth=1
+; RV64IA-NEXT:    xor a5, a4, a1
+; RV64IA-NEXT:    and a5, a5, a6
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:  .LBB52_3: # in Loop: Header=BB52_1 Depth=1
+; RV64IA-NEXT:    sc.w.rl a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB52_1
+; RV64IA-NEXT:  # %bb.4:
+; RV64IA-NEXT:    srlw a0, a4, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw umin i8* %a, i8 %b release
   ret i8 %1
 }
 
 define i8 @atomicrmw_umin_i8_acq_rel(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_umin_i8_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    and a5, a5, a6
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:  .LBB53_3: # in Loop: Header=BB53_1 Depth=1
 ; RV32IA-NEXT:    sc.w.rl a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB53_1
 ; RV32IA-NEXT:  # %bb.4:
 ; RV32IA-NEXT:    srl a0, a4, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_umin_i8_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    sd s6, 8(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s6, a0
+; RV64I-NEXT:    lbu a0, 0(a0)
+; RV64I-NEXT:    andi s1, a1, 255
+; RV64I-NEXT:    addi s3, sp, 7
+; RV64I-NEXT:    addi s4, zero, 4
+; RV64I-NEXT:    addi s5, zero, 2
+; RV64I-NEXT:  .LBB53_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    andi a1, a0, 255
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bgeu s1, a1, .LBB53_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB53_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB53_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB53_1 Depth=1
+; RV64I-NEXT:    sb a0, 7(sp)
+; RV64I-NEXT:    mv a0, s6
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s4
+; RV64I-NEXT:    mv a4, s5
+; RV64I-NEXT:    call __atomic_compare_exchange_1
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lb a0, 7(sp)
+; RV64I-NEXT:    beqz a1, .LBB53_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s6, 8(sp)
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_umin_i8_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 255
+; RV64IA-NEXT:    sllw a6, a3, a2
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB53_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aq a4, (a0)
+; RV64IA-NEXT:    and a3, a4, a6
+; RV64IA-NEXT:    mv a5, a4
+; RV64IA-NEXT:    bgeu a1, a3, .LBB53_3
+; RV64IA-NEXT:  # %bb.2: # in Loop: Header=BB53_1 Depth=1
+; RV64IA-NEXT:    xor a5, a4, a1
+; RV64IA-NEXT:    and a5, a5, a6
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:  .LBB53_3: # in Loop: Header=BB53_1 Depth=1
+; RV64IA-NEXT:    sc.w.rl a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB53_1
+; RV64IA-NEXT:  # %bb.4:
+; RV64IA-NEXT:    srlw a0, a4, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw umin i8* %a, i8 %b acq_rel
   ret i8 %1
 }
 
 define i8 @atomicrmw_umin_i8_seq_cst(i8 *%a, i8 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_umin_i8_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    and a5, a5, a6
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:  .LBB54_3: # in Loop: Header=BB54_1 Depth=1
 ; RV32IA-NEXT:    sc.w.aqrl a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB54_1
 ; RV32IA-NEXT:  # %bb.4:
 ; RV32IA-NEXT:    srl a0, a4, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_umin_i8_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s4, a0
+; RV64I-NEXT:    lbu a0, 0(a0)
+; RV64I-NEXT:    andi s5, a1, 255
+; RV64I-NEXT:    addi s3, sp, 15
+; RV64I-NEXT:    addi s1, zero, 5
+; RV64I-NEXT:  .LBB54_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    andi a1, a0, 255
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bgeu s5, a1, .LBB54_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB54_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB54_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB54_1 Depth=1
+; RV64I-NEXT:    sb a0, 15(sp)
+; RV64I-NEXT:    mv a0, s4
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s1
+; RV64I-NEXT:    mv a4, s1
+; RV64I-NEXT:    call __atomic_compare_exchange_1
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lb a0, 15(sp)
+; RV64I-NEXT:    beqz a1, .LBB54_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_umin_i8_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 255
+; RV64IA-NEXT:    sllw a6, a3, a2
+; RV64IA-NEXT:    andi a1, a1, 255
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB54_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aqrl a4, (a0)
+; RV64IA-NEXT:    and a3, a4, a6
+; RV64IA-NEXT:    mv a5, a4
+; RV64IA-NEXT:    bgeu a1, a3, .LBB54_3
+; RV64IA-NEXT:  # %bb.2: # in Loop: Header=BB54_1 Depth=1
+; RV64IA-NEXT:    xor a5, a4, a1
+; RV64IA-NEXT:    and a5, a5, a6
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:  .LBB54_3: # in Loop: Header=BB54_1 Depth=1
+; RV64IA-NEXT:    sc.w.aqrl a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB54_1
+; RV64IA-NEXT:  # %bb.4:
+; RV64IA-NEXT:    srlw a0, a4, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw umin i8* %a, i8 %b seq_cst
   ret i8 %1
 }
 
 define i16 @atomicrmw_xchg_i16_monotonic(i16* %a, i16 %b) {
 ; RV32I-LABEL: atomicrmw_xchg_i16_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    and a5, a5, a2
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    sc.w a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB55_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    srl a0, a4, a3
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_xchg_i16_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a2, zero
+; RV64I-NEXT:    call __atomic_exchange_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_xchg_i16_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a3, a0, 3
+; RV64IA-NEXT:    andi a3, a3, 24
+; RV64IA-NEXT:    sllw a2, a2, a3
+; RV64IA-NEXT:    sllw a1, a1, a3
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB55_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w a4, (a0)
+; RV64IA-NEXT:    add a5, zero, a1
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    and a5, a5, a2
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    sc.w a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB55_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    srlw a0, a4, a3
+; RV64IA-NEXT:    ret
   %1 = atomicrmw xchg i16* %a, i16 %b monotonic
   ret i16 %1
 }
 
 define i16 @atomicrmw_xchg_i16_acquire(i16* %a, i16 %b) {
 ; RV32I-LABEL: atomicrmw_xchg_i16_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    and a5, a5, a2
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    sc.w a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB56_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    srl a0, a4, a3
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_xchg_i16_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 2
+; RV64I-NEXT:    call __atomic_exchange_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_xchg_i16_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a3, a0, 3
+; RV64IA-NEXT:    andi a3, a3, 24
+; RV64IA-NEXT:    sllw a2, a2, a3
+; RV64IA-NEXT:    sllw a1, a1, a3
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB56_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aq a4, (a0)
+; RV64IA-NEXT:    add a5, zero, a1
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    and a5, a5, a2
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    sc.w a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB56_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    srlw a0, a4, a3
+; RV64IA-NEXT:    ret
   %1 = atomicrmw xchg i16* %a, i16 %b acquire
   ret i16 %1
 }
 
 define i16 @atomicrmw_xchg_i16_release(i16* %a, i16 %b) {
 ; RV32I-LABEL: atomicrmw_xchg_i16_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    and a5, a5, a2
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    sc.w.rl a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB57_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    srl a0, a4, a3
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_xchg_i16_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 3
+; RV64I-NEXT:    call __atomic_exchange_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_xchg_i16_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a3, a0, 3
+; RV64IA-NEXT:    andi a3, a3, 24
+; RV64IA-NEXT:    sllw a2, a2, a3
+; RV64IA-NEXT:    sllw a1, a1, a3
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB57_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w a4, (a0)
+; RV64IA-NEXT:    add a5, zero, a1
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    and a5, a5, a2
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    sc.w.rl a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB57_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    srlw a0, a4, a3
+; RV64IA-NEXT:    ret
   %1 = atomicrmw xchg i16* %a, i16 %b release
   ret i16 %1
 }
 
 define i16 @atomicrmw_xchg_i16_acq_rel(i16* %a, i16 %b) {
 ; RV32I-LABEL: atomicrmw_xchg_i16_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    and a5, a5, a2
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    sc.w.rl a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB58_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    srl a0, a4, a3
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_xchg_i16_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 4
+; RV64I-NEXT:    call __atomic_exchange_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_xchg_i16_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a3, a0, 3
+; RV64IA-NEXT:    andi a3, a3, 24
+; RV64IA-NEXT:    sllw a2, a2, a3
+; RV64IA-NEXT:    sllw a1, a1, a3
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB58_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aq a4, (a0)
+; RV64IA-NEXT:    add a5, zero, a1
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    and a5, a5, a2
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    sc.w.rl a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB58_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    srlw a0, a4, a3
+; RV64IA-NEXT:    ret
   %1 = atomicrmw xchg i16* %a, i16 %b acq_rel
   ret i16 %1
 }
 
 define i16 @atomicrmw_xchg_i16_seq_cst(i16* %a, i16 %b) {
 ; RV32I-LABEL: atomicrmw_xchg_i16_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    and a5, a5, a2
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    sc.w.aqrl a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB59_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    srl a0, a4, a3
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_xchg_i16_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 5
+; RV64I-NEXT:    call __atomic_exchange_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_xchg_i16_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a3, a0, 3
+; RV64IA-NEXT:    andi a3, a3, 24
+; RV64IA-NEXT:    sllw a2, a2, a3
+; RV64IA-NEXT:    sllw a1, a1, a3
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB59_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aqrl a4, (a0)
+; RV64IA-NEXT:    add a5, zero, a1
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    and a5, a5, a2
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    sc.w.aqrl a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB59_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    srlw a0, a4, a3
+; RV64IA-NEXT:    ret
   %1 = atomicrmw xchg i16* %a, i16 %b seq_cst
   ret i16 %1
 }
 
 define i16 @atomicrmw_add_i16_monotonic(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_add_i16_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    and a5, a5, a2
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    sc.w a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB60_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    srl a0, a4, a3
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_add_i16_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a2, zero
+; RV64I-NEXT:    call __atomic_fetch_add_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_add_i16_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a3, a0, 3
+; RV64IA-NEXT:    andi a3, a3, 24
+; RV64IA-NEXT:    sllw a2, a2, a3
+; RV64IA-NEXT:    sllw a1, a1, a3
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB60_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w a4, (a0)
+; RV64IA-NEXT:    add a5, a4, a1
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    and a5, a5, a2
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    sc.w a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB60_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    srlw a0, a4, a3
+; RV64IA-NEXT:    ret
   %1 = atomicrmw add i16* %a, i16 %b monotonic
   ret i16 %1
 }
 
 define i16 @atomicrmw_add_i16_acquire(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_add_i16_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    and a5, a5, a2
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    sc.w a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB61_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    srl a0, a4, a3
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_add_i16_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 2
+; RV64I-NEXT:    call __atomic_fetch_add_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_add_i16_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a3, a0, 3
+; RV64IA-NEXT:    andi a3, a3, 24
+; RV64IA-NEXT:    sllw a2, a2, a3
+; RV64IA-NEXT:    sllw a1, a1, a3
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB61_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aq a4, (a0)
+; RV64IA-NEXT:    add a5, a4, a1
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    and a5, a5, a2
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    sc.w a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB61_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    srlw a0, a4, a3
+; RV64IA-NEXT:    ret
   %1 = atomicrmw add i16* %a, i16 %b acquire
   ret i16 %1
 }
 
 define i16 @atomicrmw_add_i16_release(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_add_i16_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    and a5, a5, a2
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    sc.w.rl a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB62_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    srl a0, a4, a3
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_add_i16_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 3
+; RV64I-NEXT:    call __atomic_fetch_add_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_add_i16_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a3, a0, 3
+; RV64IA-NEXT:    andi a3, a3, 24
+; RV64IA-NEXT:    sllw a2, a2, a3
+; RV64IA-NEXT:    sllw a1, a1, a3
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB62_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w a4, (a0)
+; RV64IA-NEXT:    add a5, a4, a1
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    and a5, a5, a2
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    sc.w.rl a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB62_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    srlw a0, a4, a3
+; RV64IA-NEXT:    ret
   %1 = atomicrmw add i16* %a, i16 %b release
   ret i16 %1
 }
 
 define i16 @atomicrmw_add_i16_acq_rel(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_add_i16_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    and a5, a5, a2
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    sc.w.rl a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB63_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    srl a0, a4, a3
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_add_i16_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 4
+; RV64I-NEXT:    call __atomic_fetch_add_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_add_i16_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a3, a0, 3
+; RV64IA-NEXT:    andi a3, a3, 24
+; RV64IA-NEXT:    sllw a2, a2, a3
+; RV64IA-NEXT:    sllw a1, a1, a3
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB63_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aq a4, (a0)
+; RV64IA-NEXT:    add a5, a4, a1
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    and a5, a5, a2
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    sc.w.rl a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB63_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    srlw a0, a4, a3
+; RV64IA-NEXT:    ret
   %1 = atomicrmw add i16* %a, i16 %b acq_rel
   ret i16 %1
 }
 
 define i16 @atomicrmw_add_i16_seq_cst(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_add_i16_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    and a5, a5, a2
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    sc.w.aqrl a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB64_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    srl a0, a4, a3
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_add_i16_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 5
+; RV64I-NEXT:    call __atomic_fetch_add_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_add_i16_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a3, a0, 3
+; RV64IA-NEXT:    andi a3, a3, 24
+; RV64IA-NEXT:    sllw a2, a2, a3
+; RV64IA-NEXT:    sllw a1, a1, a3
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB64_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aqrl a4, (a0)
+; RV64IA-NEXT:    add a5, a4, a1
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    and a5, a5, a2
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    sc.w.aqrl a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB64_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    srlw a0, a4, a3
+; RV64IA-NEXT:    ret
   %1 = atomicrmw add i16* %a, i16 %b seq_cst
   ret i16 %1
 }
 
 define i16 @atomicrmw_sub_i16_monotonic(i16* %a, i16 %b) {
 ; RV32I-LABEL: atomicrmw_sub_i16_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    and a5, a5, a2
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    sc.w a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB65_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    srl a0, a4, a3
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_sub_i16_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a2, zero
+; RV64I-NEXT:    call __atomic_fetch_sub_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_sub_i16_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a3, a0, 3
+; RV64IA-NEXT:    andi a3, a3, 24
+; RV64IA-NEXT:    sllw a2, a2, a3
+; RV64IA-NEXT:    sllw a1, a1, a3
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB65_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w a4, (a0)
+; RV64IA-NEXT:    sub a5, a4, a1
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    and a5, a5, a2
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    sc.w a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB65_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    srlw a0, a4, a3
+; RV64IA-NEXT:    ret
   %1 = atomicrmw sub i16* %a, i16 %b monotonic
   ret i16 %1
 }
 
 define i16 @atomicrmw_sub_i16_acquire(i16* %a, i16 %b) {
 ; RV32I-LABEL: atomicrmw_sub_i16_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    and a5, a5, a2
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    sc.w a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB66_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    srl a0, a4, a3
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_sub_i16_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 2
+; RV64I-NEXT:    call __atomic_fetch_sub_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_sub_i16_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a3, a0, 3
+; RV64IA-NEXT:    andi a3, a3, 24
+; RV64IA-NEXT:    sllw a2, a2, a3
+; RV64IA-NEXT:    sllw a1, a1, a3
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB66_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aq a4, (a0)
+; RV64IA-NEXT:    sub a5, a4, a1
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    and a5, a5, a2
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    sc.w a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB66_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    srlw a0, a4, a3
+; RV64IA-NEXT:    ret
   %1 = atomicrmw sub i16* %a, i16 %b acquire
   ret i16 %1
 }
 
 define i16 @atomicrmw_sub_i16_release(i16* %a, i16 %b) {
 ; RV32I-LABEL: atomicrmw_sub_i16_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    and a5, a5, a2
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    sc.w.rl a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB67_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    srl a0, a4, a3
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_sub_i16_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 3
+; RV64I-NEXT:    call __atomic_fetch_sub_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_sub_i16_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a3, a0, 3
+; RV64IA-NEXT:    andi a3, a3, 24
+; RV64IA-NEXT:    sllw a2, a2, a3
+; RV64IA-NEXT:    sllw a1, a1, a3
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB67_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w a4, (a0)
+; RV64IA-NEXT:    sub a5, a4, a1
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    and a5, a5, a2
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    sc.w.rl a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB67_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    srlw a0, a4, a3
+; RV64IA-NEXT:    ret
   %1 = atomicrmw sub i16* %a, i16 %b release
   ret i16 %1
 }
 
 define i16 @atomicrmw_sub_i16_acq_rel(i16* %a, i16 %b) {
 ; RV32I-LABEL: atomicrmw_sub_i16_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    and a5, a5, a2
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    sc.w.rl a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB68_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    srl a0, a4, a3
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_sub_i16_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 4
+; RV64I-NEXT:    call __atomic_fetch_sub_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_sub_i16_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a3, a0, 3
+; RV64IA-NEXT:    andi a3, a3, 24
+; RV64IA-NEXT:    sllw a2, a2, a3
+; RV64IA-NEXT:    sllw a1, a1, a3
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB68_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aq a4, (a0)
+; RV64IA-NEXT:    sub a5, a4, a1
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    and a5, a5, a2
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    sc.w.rl a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB68_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    srlw a0, a4, a3
+; RV64IA-NEXT:    ret
   %1 = atomicrmw sub i16* %a, i16 %b acq_rel
   ret i16 %1
 }
 
 define i16 @atomicrmw_sub_i16_seq_cst(i16* %a, i16 %b) {
 ; RV32I-LABEL: atomicrmw_sub_i16_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    and a5, a5, a2
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    sc.w.aqrl a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB69_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    srl a0, a4, a3
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_sub_i16_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 5
+; RV64I-NEXT:    call __atomic_fetch_sub_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_sub_i16_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a3, a0, 3
+; RV64IA-NEXT:    andi a3, a3, 24
+; RV64IA-NEXT:    sllw a2, a2, a3
+; RV64IA-NEXT:    sllw a1, a1, a3
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB69_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aqrl a4, (a0)
+; RV64IA-NEXT:    sub a5, a4, a1
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    and a5, a5, a2
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    sc.w.aqrl a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB69_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    srlw a0, a4, a3
+; RV64IA-NEXT:    ret
   %1 = atomicrmw sub i16* %a, i16 %b seq_cst
   ret i16 %1
 }
 
 define i16 @atomicrmw_and_i16_monotonic(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_and_i16_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    sll a1, a1, a3
 ; RV32IA-NEXT:    sll a2, a2, a3
 ; RV32IA-NEXT:    not a2, a2
 ; RV32IA-NEXT:    or a1, a2, a1
 ; RV32IA-NEXT:    andi a0, a0, -4
 ; RV32IA-NEXT:    amoand.w a0, a1, (a0)
 ; RV32IA-NEXT:    srl a0, a0, a3
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_and_i16_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a2, zero
+; RV64I-NEXT:    call __atomic_fetch_and_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_and_i16_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a3, a0, 3
+; RV64IA-NEXT:    andi a3, a3, 24
+; RV64IA-NEXT:    sll a1, a1, a3
+; RV64IA-NEXT:    sll a2, a2, a3
+; RV64IA-NEXT:    not a2, a2
+; RV64IA-NEXT:    or a1, a2, a1
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:    amoand.w a0, a1, (a0)
+; RV64IA-NEXT:    srlw a0, a0, a3
+; RV64IA-NEXT:    ret
   %1 = atomicrmw and i16* %a, i16 %b monotonic
   ret i16 %1
 }
 
 define i16 @atomicrmw_and_i16_acquire(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_and_i16_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    sll a1, a1, a3
 ; RV32IA-NEXT:    sll a2, a2, a3
 ; RV32IA-NEXT:    not a2, a2
 ; RV32IA-NEXT:    or a1, a2, a1
 ; RV32IA-NEXT:    andi a0, a0, -4
 ; RV32IA-NEXT:    amoand.w.aq a0, a1, (a0)
 ; RV32IA-NEXT:    srl a0, a0, a3
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_and_i16_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 2
+; RV64I-NEXT:    call __atomic_fetch_and_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_and_i16_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a3, a0, 3
+; RV64IA-NEXT:    andi a3, a3, 24
+; RV64IA-NEXT:    sll a1, a1, a3
+; RV64IA-NEXT:    sll a2, a2, a3
+; RV64IA-NEXT:    not a2, a2
+; RV64IA-NEXT:    or a1, a2, a1
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:    amoand.w.aq a0, a1, (a0)
+; RV64IA-NEXT:    srlw a0, a0, a3
+; RV64IA-NEXT:    ret
   %1 = atomicrmw and i16* %a, i16 %b acquire
   ret i16 %1
 }
 
 define i16 @atomicrmw_and_i16_release(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_and_i16_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    sll a1, a1, a3
 ; RV32IA-NEXT:    sll a2, a2, a3
 ; RV32IA-NEXT:    not a2, a2
 ; RV32IA-NEXT:    or a1, a2, a1
 ; RV32IA-NEXT:    andi a0, a0, -4
 ; RV32IA-NEXT:    amoand.w.rl a0, a1, (a0)
 ; RV32IA-NEXT:    srl a0, a0, a3
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_and_i16_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 3
+; RV64I-NEXT:    call __atomic_fetch_and_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_and_i16_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a3, a0, 3
+; RV64IA-NEXT:    andi a3, a3, 24
+; RV64IA-NEXT:    sll a1, a1, a3
+; RV64IA-NEXT:    sll a2, a2, a3
+; RV64IA-NEXT:    not a2, a2
+; RV64IA-NEXT:    or a1, a2, a1
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:    amoand.w.rl a0, a1, (a0)
+; RV64IA-NEXT:    srlw a0, a0, a3
+; RV64IA-NEXT:    ret
   %1 = atomicrmw and i16* %a, i16 %b release
   ret i16 %1
 }
 
 define i16 @atomicrmw_and_i16_acq_rel(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_and_i16_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    sll a1, a1, a3
 ; RV32IA-NEXT:    sll a2, a2, a3
 ; RV32IA-NEXT:    not a2, a2
 ; RV32IA-NEXT:    or a1, a2, a1
 ; RV32IA-NEXT:    andi a0, a0, -4
 ; RV32IA-NEXT:    amoand.w.aqrl a0, a1, (a0)
 ; RV32IA-NEXT:    srl a0, a0, a3
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_and_i16_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 4
+; RV64I-NEXT:    call __atomic_fetch_and_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_and_i16_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a3, a0, 3
+; RV64IA-NEXT:    andi a3, a3, 24
+; RV64IA-NEXT:    sll a1, a1, a3
+; RV64IA-NEXT:    sll a2, a2, a3
+; RV64IA-NEXT:    not a2, a2
+; RV64IA-NEXT:    or a1, a2, a1
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:    amoand.w.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    srlw a0, a0, a3
+; RV64IA-NEXT:    ret
   %1 = atomicrmw and i16* %a, i16 %b acq_rel
   ret i16 %1
 }
 
 define i16 @atomicrmw_and_i16_seq_cst(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_and_i16_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    sll a1, a1, a3
 ; RV32IA-NEXT:    sll a2, a2, a3
 ; RV32IA-NEXT:    not a2, a2
 ; RV32IA-NEXT:    or a1, a2, a1
 ; RV32IA-NEXT:    andi a0, a0, -4
 ; RV32IA-NEXT:    amoand.w.aqrl a0, a1, (a0)
 ; RV32IA-NEXT:    srl a0, a0, a3
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_and_i16_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 5
+; RV64I-NEXT:    call __atomic_fetch_and_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_and_i16_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a3, a0, 3
+; RV64IA-NEXT:    andi a3, a3, 24
+; RV64IA-NEXT:    sll a1, a1, a3
+; RV64IA-NEXT:    sll a2, a2, a3
+; RV64IA-NEXT:    not a2, a2
+; RV64IA-NEXT:    or a1, a2, a1
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:    amoand.w.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    srlw a0, a0, a3
+; RV64IA-NEXT:    ret
   %1 = atomicrmw and i16* %a, i16 %b seq_cst
   ret i16 %1
 }
 
 define i16 @atomicrmw_nand_i16_monotonic(i16* %a, i16 %b) {
 ; RV32I-LABEL: atomicrmw_nand_i16_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    and a5, a5, a2
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    sc.w a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB75_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    srl a0, a4, a3
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_nand_i16_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a2, zero
+; RV64I-NEXT:    call __atomic_fetch_nand_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_nand_i16_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a3, a0, 3
+; RV64IA-NEXT:    andi a3, a3, 24
+; RV64IA-NEXT:    sllw a2, a2, a3
+; RV64IA-NEXT:    sllw a1, a1, a3
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB75_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w a4, (a0)
+; RV64IA-NEXT:    and a5, a4, a1
+; RV64IA-NEXT:    not a5, a5
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    and a5, a5, a2
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    sc.w a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB75_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    srlw a0, a4, a3
+; RV64IA-NEXT:    ret
   %1 = atomicrmw nand i16* %a, i16 %b monotonic
   ret i16 %1
 }
 
 define i16 @atomicrmw_nand_i16_acquire(i16* %a, i16 %b) {
 ; RV32I-LABEL: atomicrmw_nand_i16_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    and a5, a5, a2
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    sc.w a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB76_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    srl a0, a4, a3
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_nand_i16_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 2
+; RV64I-NEXT:    call __atomic_fetch_nand_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_nand_i16_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a3, a0, 3
+; RV64IA-NEXT:    andi a3, a3, 24
+; RV64IA-NEXT:    sllw a2, a2, a3
+; RV64IA-NEXT:    sllw a1, a1, a3
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB76_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aq a4, (a0)
+; RV64IA-NEXT:    and a5, a4, a1
+; RV64IA-NEXT:    not a5, a5
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    and a5, a5, a2
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    sc.w a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB76_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    srlw a0, a4, a3
+; RV64IA-NEXT:    ret
   %1 = atomicrmw nand i16* %a, i16 %b acquire
   ret i16 %1
 }
 
 define i16 @atomicrmw_nand_i16_release(i16* %a, i16 %b) {
 ; RV32I-LABEL: atomicrmw_nand_i16_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    and a5, a5, a2
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    sc.w.rl a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB77_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    srl a0, a4, a3
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_nand_i16_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 3
+; RV64I-NEXT:    call __atomic_fetch_nand_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_nand_i16_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a3, a0, 3
+; RV64IA-NEXT:    andi a3, a3, 24
+; RV64IA-NEXT:    sllw a2, a2, a3
+; RV64IA-NEXT:    sllw a1, a1, a3
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB77_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w a4, (a0)
+; RV64IA-NEXT:    and a5, a4, a1
+; RV64IA-NEXT:    not a5, a5
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    and a5, a5, a2
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    sc.w.rl a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB77_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    srlw a0, a4, a3
+; RV64IA-NEXT:    ret
   %1 = atomicrmw nand i16* %a, i16 %b release
   ret i16 %1
 }
 
 define i16 @atomicrmw_nand_i16_acq_rel(i16* %a, i16 %b) {
 ; RV32I-LABEL: atomicrmw_nand_i16_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    and a5, a5, a2
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    sc.w.rl a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB78_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    srl a0, a4, a3
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_nand_i16_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 4
+; RV64I-NEXT:    call __atomic_fetch_nand_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_nand_i16_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a3, a0, 3
+; RV64IA-NEXT:    andi a3, a3, 24
+; RV64IA-NEXT:    sllw a2, a2, a3
+; RV64IA-NEXT:    sllw a1, a1, a3
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB78_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aq a4, (a0)
+; RV64IA-NEXT:    and a5, a4, a1
+; RV64IA-NEXT:    not a5, a5
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    and a5, a5, a2
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    sc.w.rl a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB78_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    srlw a0, a4, a3
+; RV64IA-NEXT:    ret
   %1 = atomicrmw nand i16* %a, i16 %b acq_rel
   ret i16 %1
 }
 
 define i16 @atomicrmw_nand_i16_seq_cst(i16* %a, i16 %b) {
 ; RV32I-LABEL: atomicrmw_nand_i16_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    and a5, a5, a2
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:    sc.w.aqrl a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB79_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    srl a0, a4, a3
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_nand_i16_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 5
+; RV64I-NEXT:    call __atomic_fetch_nand_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_nand_i16_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a3, a0, 3
+; RV64IA-NEXT:    andi a3, a3, 24
+; RV64IA-NEXT:    sllw a2, a2, a3
+; RV64IA-NEXT:    sllw a1, a1, a3
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB79_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aqrl a4, (a0)
+; RV64IA-NEXT:    and a5, a4, a1
+; RV64IA-NEXT:    not a5, a5
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    and a5, a5, a2
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:    sc.w.aqrl a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB79_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    srlw a0, a4, a3
+; RV64IA-NEXT:    ret
   %1 = atomicrmw nand i16* %a, i16 %b seq_cst
   ret i16 %1
 }
 
 define i16 @atomicrmw_or_i16_monotonic(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_or_i16_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    and a1, a1, a2
 ; RV32IA-NEXT:    slli a2, a0, 3
 ; RV32IA-NEXT:    andi a2, a2, 24
 ; RV32IA-NEXT:    sll a1, a1, a2
 ; RV32IA-NEXT:    andi a0, a0, -4
 ; RV32IA-NEXT:    amoor.w a0, a1, (a0)
 ; RV32IA-NEXT:    srl a0, a0, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_or_i16_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a2, zero
+; RV64I-NEXT:    call __atomic_fetch_or_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_or_i16_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    sll a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:    amoor.w a0, a1, (a0)
+; RV64IA-NEXT:    srlw a0, a0, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw or i16* %a, i16 %b monotonic
   ret i16 %1
 }
 
 define i16 @atomicrmw_or_i16_acquire(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_or_i16_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    and a1, a1, a2
 ; RV32IA-NEXT:    slli a2, a0, 3
 ; RV32IA-NEXT:    andi a2, a2, 24
 ; RV32IA-NEXT:    sll a1, a1, a2
 ; RV32IA-NEXT:    andi a0, a0, -4
 ; RV32IA-NEXT:    amoor.w.aq a0, a1, (a0)
 ; RV32IA-NEXT:    srl a0, a0, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_or_i16_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 2
+; RV64I-NEXT:    call __atomic_fetch_or_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_or_i16_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    sll a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:    amoor.w.aq a0, a1, (a0)
+; RV64IA-NEXT:    srlw a0, a0, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw or i16* %a, i16 %b acquire
   ret i16 %1
 }
 
 define i16 @atomicrmw_or_i16_release(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_or_i16_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    and a1, a1, a2
 ; RV32IA-NEXT:    slli a2, a0, 3
 ; RV32IA-NEXT:    andi a2, a2, 24
 ; RV32IA-NEXT:    sll a1, a1, a2
 ; RV32IA-NEXT:    andi a0, a0, -4
 ; RV32IA-NEXT:    amoor.w.rl a0, a1, (a0)
 ; RV32IA-NEXT:    srl a0, a0, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_or_i16_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 3
+; RV64I-NEXT:    call __atomic_fetch_or_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_or_i16_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    sll a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:    amoor.w.rl a0, a1, (a0)
+; RV64IA-NEXT:    srlw a0, a0, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw or i16* %a, i16 %b release
   ret i16 %1
 }
 
 define i16 @atomicrmw_or_i16_acq_rel(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_or_i16_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    and a1, a1, a2
 ; RV32IA-NEXT:    slli a2, a0, 3
 ; RV32IA-NEXT:    andi a2, a2, 24
 ; RV32IA-NEXT:    sll a1, a1, a2
 ; RV32IA-NEXT:    andi a0, a0, -4
 ; RV32IA-NEXT:    amoor.w.aqrl a0, a1, (a0)
 ; RV32IA-NEXT:    srl a0, a0, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_or_i16_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 4
+; RV64I-NEXT:    call __atomic_fetch_or_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_or_i16_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    sll a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:    amoor.w.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    srlw a0, a0, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw or i16* %a, i16 %b acq_rel
   ret i16 %1
 }
 
 define i16 @atomicrmw_or_i16_seq_cst(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_or_i16_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    and a1, a1, a2
 ; RV32IA-NEXT:    slli a2, a0, 3
 ; RV32IA-NEXT:    andi a2, a2, 24
 ; RV32IA-NEXT:    sll a1, a1, a2
 ; RV32IA-NEXT:    andi a0, a0, -4
 ; RV32IA-NEXT:    amoor.w.aqrl a0, a1, (a0)
 ; RV32IA-NEXT:    srl a0, a0, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_or_i16_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 5
+; RV64I-NEXT:    call __atomic_fetch_or_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_or_i16_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    sll a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:    amoor.w.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    srlw a0, a0, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw or i16* %a, i16 %b seq_cst
   ret i16 %1
 }
 
 define i16 @atomicrmw_xor_i16_monotonic(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_xor_i16_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    and a1, a1, a2
 ; RV32IA-NEXT:    slli a2, a0, 3
 ; RV32IA-NEXT:    andi a2, a2, 24
 ; RV32IA-NEXT:    sll a1, a1, a2
 ; RV32IA-NEXT:    andi a0, a0, -4
 ; RV32IA-NEXT:    amoxor.w a0, a1, (a0)
 ; RV32IA-NEXT:    srl a0, a0, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_xor_i16_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a2, zero
+; RV64I-NEXT:    call __atomic_fetch_xor_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_xor_i16_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    sll a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:    amoxor.w a0, a1, (a0)
+; RV64IA-NEXT:    srlw a0, a0, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw xor i16* %a, i16 %b monotonic
   ret i16 %1
 }
 
 define i16 @atomicrmw_xor_i16_acquire(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_xor_i16_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    and a1, a1, a2
 ; RV32IA-NEXT:    slli a2, a0, 3
 ; RV32IA-NEXT:    andi a2, a2, 24
 ; RV32IA-NEXT:    sll a1, a1, a2
 ; RV32IA-NEXT:    andi a0, a0, -4
 ; RV32IA-NEXT:    amoxor.w.aq a0, a1, (a0)
 ; RV32IA-NEXT:    srl a0, a0, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_xor_i16_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 2
+; RV64I-NEXT:    call __atomic_fetch_xor_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_xor_i16_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    sll a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:    amoxor.w.aq a0, a1, (a0)
+; RV64IA-NEXT:    srlw a0, a0, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw xor i16* %a, i16 %b acquire
   ret i16 %1
 }
 
 define i16 @atomicrmw_xor_i16_release(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_xor_i16_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    and a1, a1, a2
 ; RV32IA-NEXT:    slli a2, a0, 3
 ; RV32IA-NEXT:    andi a2, a2, 24
 ; RV32IA-NEXT:    sll a1, a1, a2
 ; RV32IA-NEXT:    andi a0, a0, -4
 ; RV32IA-NEXT:    amoxor.w.rl a0, a1, (a0)
 ; RV32IA-NEXT:    srl a0, a0, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_xor_i16_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 3
+; RV64I-NEXT:    call __atomic_fetch_xor_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_xor_i16_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    sll a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:    amoxor.w.rl a0, a1, (a0)
+; RV64IA-NEXT:    srlw a0, a0, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw xor i16* %a, i16 %b release
   ret i16 %1
 }
 
 define i16 @atomicrmw_xor_i16_acq_rel(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_xor_i16_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    and a1, a1, a2
 ; RV32IA-NEXT:    slli a2, a0, 3
 ; RV32IA-NEXT:    andi a2, a2, 24
 ; RV32IA-NEXT:    sll a1, a1, a2
 ; RV32IA-NEXT:    andi a0, a0, -4
 ; RV32IA-NEXT:    amoxor.w.aqrl a0, a1, (a0)
 ; RV32IA-NEXT:    srl a0, a0, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_xor_i16_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 4
+; RV64I-NEXT:    call __atomic_fetch_xor_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_xor_i16_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    sll a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:    amoxor.w.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    srlw a0, a0, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw xor i16* %a, i16 %b acq_rel
   ret i16 %1
 }
 
 define i16 @atomicrmw_xor_i16_seq_cst(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_xor_i16_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    and a1, a1, a2
 ; RV32IA-NEXT:    slli a2, a0, 3
 ; RV32IA-NEXT:    andi a2, a2, 24
 ; RV32IA-NEXT:    sll a1, a1, a2
 ; RV32IA-NEXT:    andi a0, a0, -4
 ; RV32IA-NEXT:    amoxor.w.aqrl a0, a1, (a0)
 ; RV32IA-NEXT:    srl a0, a0, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_xor_i16_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 5
+; RV64I-NEXT:    call __atomic_fetch_xor_2
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_xor_i16_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    sll a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:    amoxor.w.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    srlw a0, a0, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw xor i16* %a, i16 %b seq_cst
   ret i16 %1
 }
 
 define i16 @atomicrmw_max_i16_monotonic(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_max_i16_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    and a3, a3, a7
 ; RV32IA-NEXT:    xor a3, a5, a3
 ; RV32IA-NEXT:  .LBB90_3: # in Loop: Header=BB90_1 Depth=1
 ; RV32IA-NEXT:    sc.w a3, a3, (a0)
 ; RV32IA-NEXT:    bnez a3, .LBB90_1
 ; RV32IA-NEXT:  # %bb.4:
 ; RV32IA-NEXT:    srl a0, a5, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_max_i16_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -48
+; RV64I-NEXT:    sd ra, 40(sp)
+; RV64I-NEXT:    sd s1, 32(sp)
+; RV64I-NEXT:    sd s2, 24(sp)
+; RV64I-NEXT:    sd s3, 16(sp)
+; RV64I-NEXT:    sd s4, 8(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s4, a0
+; RV64I-NEXT:    lhu a0, 0(a0)
+; RV64I-NEXT:    slli a1, a1, 48
+; RV64I-NEXT:    srai s1, a1, 48
+; RV64I-NEXT:    addi s3, sp, 6
+; RV64I-NEXT:  .LBB90_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    slli a1, a0, 48
+; RV64I-NEXT:    srai a1, a1, 48
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    blt s1, a1, .LBB90_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB90_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB90_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB90_1 Depth=1
+; RV64I-NEXT:    sh a0, 6(sp)
+; RV64I-NEXT:    mv a0, s4
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, zero
+; RV64I-NEXT:    mv a4, zero
+; RV64I-NEXT:    call __atomic_compare_exchange_2
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lh a0, 6(sp)
+; RV64I-NEXT:    beqz a1, .LBB90_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s4, 8(sp)
+; RV64I-NEXT:    ld s3, 16(sp)
+; RV64I-NEXT:    ld s2, 24(sp)
+; RV64I-NEXT:    ld s1, 32(sp)
+; RV64I-NEXT:    ld ra, 40(sp)
+; RV64I-NEXT:    addi sp, sp, 48
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_max_i16_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 48
+; RV64IA-NEXT:    sub a6, a3, a2
+; RV64IA-NEXT:    lui a4, 16
+; RV64IA-NEXT:    addiw a4, a4, -1
+; RV64IA-NEXT:    sllw a7, a4, a2
+; RV64IA-NEXT:    slli a1, a1, 48
+; RV64IA-NEXT:    srai a1, a1, 48
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB90_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w a5, (a0)
+; RV64IA-NEXT:    and a4, a5, a7
+; RV64IA-NEXT:    mv a3, a5
+; RV64IA-NEXT:    sll a4, a4, a6
+; RV64IA-NEXT:    sra a4, a4, a6
+; RV64IA-NEXT:    bge a4, a1, .LBB90_3
+; RV64IA-NEXT:  # %bb.2: # in Loop: Header=BB90_1 Depth=1
+; RV64IA-NEXT:    xor a3, a5, a1
+; RV64IA-NEXT:    and a3, a3, a7
+; RV64IA-NEXT:    xor a3, a5, a3
+; RV64IA-NEXT:  .LBB90_3: # in Loop: Header=BB90_1 Depth=1
+; RV64IA-NEXT:    sc.w a3, a3, (a0)
+; RV64IA-NEXT:    bnez a3, .LBB90_1
+; RV64IA-NEXT:  # %bb.4:
+; RV64IA-NEXT:    srlw a0, a5, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw max i16* %a, i16 %b monotonic
   ret i16 %1
 }
 
 define i16 @atomicrmw_max_i16_acquire(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_max_i16_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    and a3, a3, a7
 ; RV32IA-NEXT:    xor a3, a5, a3
 ; RV32IA-NEXT:  .LBB91_3: # in Loop: Header=BB91_1 Depth=1
 ; RV32IA-NEXT:    sc.w a3, a3, (a0)
 ; RV32IA-NEXT:    bnez a3, .LBB91_1
 ; RV32IA-NEXT:  # %bb.4:
 ; RV32IA-NEXT:    srl a0, a5, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_max_i16_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s4, a0
+; RV64I-NEXT:    lhu a0, 0(a0)
+; RV64I-NEXT:    slli a1, a1, 48
+; RV64I-NEXT:    srai s5, a1, 48
+; RV64I-NEXT:    addi s3, sp, 14
+; RV64I-NEXT:    addi s1, zero, 2
+; RV64I-NEXT:  .LBB91_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    slli a1, a0, 48
+; RV64I-NEXT:    srai a1, a1, 48
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    blt s5, a1, .LBB91_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB91_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB91_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB91_1 Depth=1
+; RV64I-NEXT:    sh a0, 14(sp)
+; RV64I-NEXT:    mv a0, s4
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s1
+; RV64I-NEXT:    mv a4, s1
+; RV64I-NEXT:    call __atomic_compare_exchange_2
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lh a0, 14(sp)
+; RV64I-NEXT:    beqz a1, .LBB91_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_max_i16_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 48
+; RV64IA-NEXT:    sub a6, a3, a2
+; RV64IA-NEXT:    lui a4, 16
+; RV64IA-NEXT:    addiw a4, a4, -1
+; RV64IA-NEXT:    sllw a7, a4, a2
+; RV64IA-NEXT:    slli a1, a1, 48
+; RV64IA-NEXT:    srai a1, a1, 48
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB91_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aq a5, (a0)
+; RV64IA-NEXT:    and a4, a5, a7
+; RV64IA-NEXT:    mv a3, a5
+; RV64IA-NEXT:    sll a4, a4, a6
+; RV64IA-NEXT:    sra a4, a4, a6
+; RV64IA-NEXT:    bge a4, a1, .LBB91_3
+; RV64IA-NEXT:  # %bb.2: # in Loop: Header=BB91_1 Depth=1
+; RV64IA-NEXT:    xor a3, a5, a1
+; RV64IA-NEXT:    and a3, a3, a7
+; RV64IA-NEXT:    xor a3, a5, a3
+; RV64IA-NEXT:  .LBB91_3: # in Loop: Header=BB91_1 Depth=1
+; RV64IA-NEXT:    sc.w a3, a3, (a0)
+; RV64IA-NEXT:    bnez a3, .LBB91_1
+; RV64IA-NEXT:  # %bb.4:
+; RV64IA-NEXT:    srlw a0, a5, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw max i16* %a, i16 %b acquire
   ret i16 %1
 }
 
 define i16 @atomicrmw_max_i16_release(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_max_i16_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    and a3, a3, a7
 ; RV32IA-NEXT:    xor a3, a5, a3
 ; RV32IA-NEXT:  .LBB92_3: # in Loop: Header=BB92_1 Depth=1
 ; RV32IA-NEXT:    sc.w.rl a3, a3, (a0)
 ; RV32IA-NEXT:    bnez a3, .LBB92_1
 ; RV32IA-NEXT:  # %bb.4:
 ; RV32IA-NEXT:    srl a0, a5, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_max_i16_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s5, a0
+; RV64I-NEXT:    lhu a0, 0(a0)
+; RV64I-NEXT:    slli a1, a1, 48
+; RV64I-NEXT:    srai s1, a1, 48
+; RV64I-NEXT:    addi s3, sp, 14
+; RV64I-NEXT:    addi s4, zero, 3
+; RV64I-NEXT:  .LBB92_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    slli a1, a0, 48
+; RV64I-NEXT:    srai a1, a1, 48
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    blt s1, a1, .LBB92_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB92_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB92_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB92_1 Depth=1
+; RV64I-NEXT:    sh a0, 14(sp)
+; RV64I-NEXT:    mv a0, s5
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s4
+; RV64I-NEXT:    mv a4, zero
+; RV64I-NEXT:    call __atomic_compare_exchange_2
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lh a0, 14(sp)
+; RV64I-NEXT:    beqz a1, .LBB92_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_max_i16_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 48
+; RV64IA-NEXT:    sub a6, a3, a2
+; RV64IA-NEXT:    lui a4, 16
+; RV64IA-NEXT:    addiw a4, a4, -1
+; RV64IA-NEXT:    sllw a7, a4, a2
+; RV64IA-NEXT:    slli a1, a1, 48
+; RV64IA-NEXT:    srai a1, a1, 48
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB92_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w a5, (a0)
+; RV64IA-NEXT:    and a4, a5, a7
+; RV64IA-NEXT:    mv a3, a5
+; RV64IA-NEXT:    sll a4, a4, a6
+; RV64IA-NEXT:    sra a4, a4, a6
+; RV64IA-NEXT:    bge a4, a1, .LBB92_3
+; RV64IA-NEXT:  # %bb.2: # in Loop: Header=BB92_1 Depth=1
+; RV64IA-NEXT:    xor a3, a5, a1
+; RV64IA-NEXT:    and a3, a3, a7
+; RV64IA-NEXT:    xor a3, a5, a3
+; RV64IA-NEXT:  .LBB92_3: # in Loop: Header=BB92_1 Depth=1
+; RV64IA-NEXT:    sc.w.rl a3, a3, (a0)
+; RV64IA-NEXT:    bnez a3, .LBB92_1
+; RV64IA-NEXT:  # %bb.4:
+; RV64IA-NEXT:    srlw a0, a5, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw max i16* %a, i16 %b release
   ret i16 %1
 }
 
 define i16 @atomicrmw_max_i16_acq_rel(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_max_i16_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    and a3, a3, a7
 ; RV32IA-NEXT:    xor a3, a5, a3
 ; RV32IA-NEXT:  .LBB93_3: # in Loop: Header=BB93_1 Depth=1
 ; RV32IA-NEXT:    sc.w.rl a3, a3, (a0)
 ; RV32IA-NEXT:    bnez a3, .LBB93_1
 ; RV32IA-NEXT:  # %bb.4:
 ; RV32IA-NEXT:    srl a0, a5, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_max_i16_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    sd s6, 8(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s6, a0
+; RV64I-NEXT:    lhu a0, 0(a0)
+; RV64I-NEXT:    slli a1, a1, 48
+; RV64I-NEXT:    srai s1, a1, 48
+; RV64I-NEXT:    addi s3, sp, 6
+; RV64I-NEXT:    addi s4, zero, 4
+; RV64I-NEXT:    addi s5, zero, 2
+; RV64I-NEXT:  .LBB93_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    slli a1, a0, 48
+; RV64I-NEXT:    srai a1, a1, 48
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    blt s1, a1, .LBB93_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB93_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB93_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB93_1 Depth=1
+; RV64I-NEXT:    sh a0, 6(sp)
+; RV64I-NEXT:    mv a0, s6
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s4
+; RV64I-NEXT:    mv a4, s5
+; RV64I-NEXT:    call __atomic_compare_exchange_2
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lh a0, 6(sp)
+; RV64I-NEXT:    beqz a1, .LBB93_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s6, 8(sp)
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_max_i16_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 48
+; RV64IA-NEXT:    sub a6, a3, a2
+; RV64IA-NEXT:    lui a4, 16
+; RV64IA-NEXT:    addiw a4, a4, -1
+; RV64IA-NEXT:    sllw a7, a4, a2
+; RV64IA-NEXT:    slli a1, a1, 48
+; RV64IA-NEXT:    srai a1, a1, 48
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB93_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aq a5, (a0)
+; RV64IA-NEXT:    and a4, a5, a7
+; RV64IA-NEXT:    mv a3, a5
+; RV64IA-NEXT:    sll a4, a4, a6
+; RV64IA-NEXT:    sra a4, a4, a6
+; RV64IA-NEXT:    bge a4, a1, .LBB93_3
+; RV64IA-NEXT:  # %bb.2: # in Loop: Header=BB93_1 Depth=1
+; RV64IA-NEXT:    xor a3, a5, a1
+; RV64IA-NEXT:    and a3, a3, a7
+; RV64IA-NEXT:    xor a3, a5, a3
+; RV64IA-NEXT:  .LBB93_3: # in Loop: Header=BB93_1 Depth=1
+; RV64IA-NEXT:    sc.w.rl a3, a3, (a0)
+; RV64IA-NEXT:    bnez a3, .LBB93_1
+; RV64IA-NEXT:  # %bb.4:
+; RV64IA-NEXT:    srlw a0, a5, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw max i16* %a, i16 %b acq_rel
   ret i16 %1
 }
 
 define i16 @atomicrmw_max_i16_seq_cst(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_max_i16_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    and a3, a3, a7
 ; RV32IA-NEXT:    xor a3, a5, a3
 ; RV32IA-NEXT:  .LBB94_3: # in Loop: Header=BB94_1 Depth=1
 ; RV32IA-NEXT:    sc.w.aqrl a3, a3, (a0)
 ; RV32IA-NEXT:    bnez a3, .LBB94_1
 ; RV32IA-NEXT:  # %bb.4:
 ; RV32IA-NEXT:    srl a0, a5, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_max_i16_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s4, a0
+; RV64I-NEXT:    lhu a0, 0(a0)
+; RV64I-NEXT:    slli a1, a1, 48
+; RV64I-NEXT:    srai s5, a1, 48
+; RV64I-NEXT:    addi s3, sp, 14
+; RV64I-NEXT:    addi s1, zero, 5
+; RV64I-NEXT:  .LBB94_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    slli a1, a0, 48
+; RV64I-NEXT:    srai a1, a1, 48
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    blt s5, a1, .LBB94_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB94_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB94_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB94_1 Depth=1
+; RV64I-NEXT:    sh a0, 14(sp)
+; RV64I-NEXT:    mv a0, s4
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s1
+; RV64I-NEXT:    mv a4, s1
+; RV64I-NEXT:    call __atomic_compare_exchange_2
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lh a0, 14(sp)
+; RV64I-NEXT:    beqz a1, .LBB94_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_max_i16_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 48
+; RV64IA-NEXT:    sub a6, a3, a2
+; RV64IA-NEXT:    lui a4, 16
+; RV64IA-NEXT:    addiw a4, a4, -1
+; RV64IA-NEXT:    sllw a7, a4, a2
+; RV64IA-NEXT:    slli a1, a1, 48
+; RV64IA-NEXT:    srai a1, a1, 48
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB94_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aqrl a5, (a0)
+; RV64IA-NEXT:    and a4, a5, a7
+; RV64IA-NEXT:    mv a3, a5
+; RV64IA-NEXT:    sll a4, a4, a6
+; RV64IA-NEXT:    sra a4, a4, a6
+; RV64IA-NEXT:    bge a4, a1, .LBB94_3
+; RV64IA-NEXT:  # %bb.2: # in Loop: Header=BB94_1 Depth=1
+; RV64IA-NEXT:    xor a3, a5, a1
+; RV64IA-NEXT:    and a3, a3, a7
+; RV64IA-NEXT:    xor a3, a5, a3
+; RV64IA-NEXT:  .LBB94_3: # in Loop: Header=BB94_1 Depth=1
+; RV64IA-NEXT:    sc.w.aqrl a3, a3, (a0)
+; RV64IA-NEXT:    bnez a3, .LBB94_1
+; RV64IA-NEXT:  # %bb.4:
+; RV64IA-NEXT:    srlw a0, a5, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw max i16* %a, i16 %b seq_cst
   ret i16 %1
 }
 
 define i16 @atomicrmw_min_i16_monotonic(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_min_i16_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    and a3, a3, a7
 ; RV32IA-NEXT:    xor a3, a5, a3
 ; RV32IA-NEXT:  .LBB95_3: # in Loop: Header=BB95_1 Depth=1
 ; RV32IA-NEXT:    sc.w a3, a3, (a0)
 ; RV32IA-NEXT:    bnez a3, .LBB95_1
 ; RV32IA-NEXT:  # %bb.4:
 ; RV32IA-NEXT:    srl a0, a5, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_min_i16_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -48
+; RV64I-NEXT:    sd ra, 40(sp)
+; RV64I-NEXT:    sd s1, 32(sp)
+; RV64I-NEXT:    sd s2, 24(sp)
+; RV64I-NEXT:    sd s3, 16(sp)
+; RV64I-NEXT:    sd s4, 8(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s4, a0
+; RV64I-NEXT:    lhu a0, 0(a0)
+; RV64I-NEXT:    slli a1, a1, 48
+; RV64I-NEXT:    srai s1, a1, 48
+; RV64I-NEXT:    addi s3, sp, 6
+; RV64I-NEXT:  .LBB95_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    slli a1, a0, 48
+; RV64I-NEXT:    srai a1, a1, 48
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bge s1, a1, .LBB95_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB95_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB95_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB95_1 Depth=1
+; RV64I-NEXT:    sh a0, 6(sp)
+; RV64I-NEXT:    mv a0, s4
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, zero
+; RV64I-NEXT:    mv a4, zero
+; RV64I-NEXT:    call __atomic_compare_exchange_2
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lh a0, 6(sp)
+; RV64I-NEXT:    beqz a1, .LBB95_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s4, 8(sp)
+; RV64I-NEXT:    ld s3, 16(sp)
+; RV64I-NEXT:    ld s2, 24(sp)
+; RV64I-NEXT:    ld s1, 32(sp)
+; RV64I-NEXT:    ld ra, 40(sp)
+; RV64I-NEXT:    addi sp, sp, 48
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_min_i16_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 48
+; RV64IA-NEXT:    sub a6, a3, a2
+; RV64IA-NEXT:    lui a4, 16
+; RV64IA-NEXT:    addiw a4, a4, -1
+; RV64IA-NEXT:    sllw a7, a4, a2
+; RV64IA-NEXT:    slli a1, a1, 48
+; RV64IA-NEXT:    srai a1, a1, 48
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB95_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w a5, (a0)
+; RV64IA-NEXT:    and a4, a5, a7
+; RV64IA-NEXT:    mv a3, a5
+; RV64IA-NEXT:    sll a4, a4, a6
+; RV64IA-NEXT:    sra a4, a4, a6
+; RV64IA-NEXT:    bge a1, a4, .LBB95_3
+; RV64IA-NEXT:  # %bb.2: # in Loop: Header=BB95_1 Depth=1
+; RV64IA-NEXT:    xor a3, a5, a1
+; RV64IA-NEXT:    and a3, a3, a7
+; RV64IA-NEXT:    xor a3, a5, a3
+; RV64IA-NEXT:  .LBB95_3: # in Loop: Header=BB95_1 Depth=1
+; RV64IA-NEXT:    sc.w a3, a3, (a0)
+; RV64IA-NEXT:    bnez a3, .LBB95_1
+; RV64IA-NEXT:  # %bb.4:
+; RV64IA-NEXT:    srlw a0, a5, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw min i16* %a, i16 %b monotonic
   ret i16 %1
 }
 
 define i16 @atomicrmw_min_i16_acquire(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_min_i16_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    and a3, a3, a7
 ; RV32IA-NEXT:    xor a3, a5, a3
 ; RV32IA-NEXT:  .LBB96_3: # in Loop: Header=BB96_1 Depth=1
 ; RV32IA-NEXT:    sc.w a3, a3, (a0)
 ; RV32IA-NEXT:    bnez a3, .LBB96_1
 ; RV32IA-NEXT:  # %bb.4:
 ; RV32IA-NEXT:    srl a0, a5, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_min_i16_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s4, a0
+; RV64I-NEXT:    lhu a0, 0(a0)
+; RV64I-NEXT:    slli a1, a1, 48
+; RV64I-NEXT:    srai s5, a1, 48
+; RV64I-NEXT:    addi s3, sp, 14
+; RV64I-NEXT:    addi s1, zero, 2
+; RV64I-NEXT:  .LBB96_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    slli a1, a0, 48
+; RV64I-NEXT:    srai a1, a1, 48
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bge s5, a1, .LBB96_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB96_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB96_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB96_1 Depth=1
+; RV64I-NEXT:    sh a0, 14(sp)
+; RV64I-NEXT:    mv a0, s4
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s1
+; RV64I-NEXT:    mv a4, s1
+; RV64I-NEXT:    call __atomic_compare_exchange_2
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lh a0, 14(sp)
+; RV64I-NEXT:    beqz a1, .LBB96_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_min_i16_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 48
+; RV64IA-NEXT:    sub a6, a3, a2
+; RV64IA-NEXT:    lui a4, 16
+; RV64IA-NEXT:    addiw a4, a4, -1
+; RV64IA-NEXT:    sllw a7, a4, a2
+; RV64IA-NEXT:    slli a1, a1, 48
+; RV64IA-NEXT:    srai a1, a1, 48
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB96_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aq a5, (a0)
+; RV64IA-NEXT:    and a4, a5, a7
+; RV64IA-NEXT:    mv a3, a5
+; RV64IA-NEXT:    sll a4, a4, a6
+; RV64IA-NEXT:    sra a4, a4, a6
+; RV64IA-NEXT:    bge a1, a4, .LBB96_3
+; RV64IA-NEXT:  # %bb.2: # in Loop: Header=BB96_1 Depth=1
+; RV64IA-NEXT:    xor a3, a5, a1
+; RV64IA-NEXT:    and a3, a3, a7
+; RV64IA-NEXT:    xor a3, a5, a3
+; RV64IA-NEXT:  .LBB96_3: # in Loop: Header=BB96_1 Depth=1
+; RV64IA-NEXT:    sc.w a3, a3, (a0)
+; RV64IA-NEXT:    bnez a3, .LBB96_1
+; RV64IA-NEXT:  # %bb.4:
+; RV64IA-NEXT:    srlw a0, a5, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw min i16* %a, i16 %b acquire
   ret i16 %1
 }
 
 define i16 @atomicrmw_min_i16_release(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_min_i16_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    and a3, a3, a7
 ; RV32IA-NEXT:    xor a3, a5, a3
 ; RV32IA-NEXT:  .LBB97_3: # in Loop: Header=BB97_1 Depth=1
 ; RV32IA-NEXT:    sc.w.rl a3, a3, (a0)
 ; RV32IA-NEXT:    bnez a3, .LBB97_1
 ; RV32IA-NEXT:  # %bb.4:
 ; RV32IA-NEXT:    srl a0, a5, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_min_i16_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s5, a0
+; RV64I-NEXT:    lhu a0, 0(a0)
+; RV64I-NEXT:    slli a1, a1, 48
+; RV64I-NEXT:    srai s1, a1, 48
+; RV64I-NEXT:    addi s3, sp, 14
+; RV64I-NEXT:    addi s4, zero, 3
+; RV64I-NEXT:  .LBB97_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    slli a1, a0, 48
+; RV64I-NEXT:    srai a1, a1, 48
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bge s1, a1, .LBB97_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB97_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB97_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB97_1 Depth=1
+; RV64I-NEXT:    sh a0, 14(sp)
+; RV64I-NEXT:    mv a0, s5
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s4
+; RV64I-NEXT:    mv a4, zero
+; RV64I-NEXT:    call __atomic_compare_exchange_2
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lh a0, 14(sp)
+; RV64I-NEXT:    beqz a1, .LBB97_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_min_i16_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 48
+; RV64IA-NEXT:    sub a6, a3, a2
+; RV64IA-NEXT:    lui a4, 16
+; RV64IA-NEXT:    addiw a4, a4, -1
+; RV64IA-NEXT:    sllw a7, a4, a2
+; RV64IA-NEXT:    slli a1, a1, 48
+; RV64IA-NEXT:    srai a1, a1, 48
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB97_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w a5, (a0)
+; RV64IA-NEXT:    and a4, a5, a7
+; RV64IA-NEXT:    mv a3, a5
+; RV64IA-NEXT:    sll a4, a4, a6
+; RV64IA-NEXT:    sra a4, a4, a6
+; RV64IA-NEXT:    bge a1, a4, .LBB97_3
+; RV64IA-NEXT:  # %bb.2: # in Loop: Header=BB97_1 Depth=1
+; RV64IA-NEXT:    xor a3, a5, a1
+; RV64IA-NEXT:    and a3, a3, a7
+; RV64IA-NEXT:    xor a3, a5, a3
+; RV64IA-NEXT:  .LBB97_3: # in Loop: Header=BB97_1 Depth=1
+; RV64IA-NEXT:    sc.w.rl a3, a3, (a0)
+; RV64IA-NEXT:    bnez a3, .LBB97_1
+; RV64IA-NEXT:  # %bb.4:
+; RV64IA-NEXT:    srlw a0, a5, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw min i16* %a, i16 %b release
   ret i16 %1
 }
 
 define i16 @atomicrmw_min_i16_acq_rel(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_min_i16_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    and a3, a3, a7
 ; RV32IA-NEXT:    xor a3, a5, a3
 ; RV32IA-NEXT:  .LBB98_3: # in Loop: Header=BB98_1 Depth=1
 ; RV32IA-NEXT:    sc.w.rl a3, a3, (a0)
 ; RV32IA-NEXT:    bnez a3, .LBB98_1
 ; RV32IA-NEXT:  # %bb.4:
 ; RV32IA-NEXT:    srl a0, a5, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_min_i16_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    sd s6, 8(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s6, a0
+; RV64I-NEXT:    lhu a0, 0(a0)
+; RV64I-NEXT:    slli a1, a1, 48
+; RV64I-NEXT:    srai s1, a1, 48
+; RV64I-NEXT:    addi s3, sp, 6
+; RV64I-NEXT:    addi s4, zero, 4
+; RV64I-NEXT:    addi s5, zero, 2
+; RV64I-NEXT:  .LBB98_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    slli a1, a0, 48
+; RV64I-NEXT:    srai a1, a1, 48
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bge s1, a1, .LBB98_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB98_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB98_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB98_1 Depth=1
+; RV64I-NEXT:    sh a0, 6(sp)
+; RV64I-NEXT:    mv a0, s6
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s4
+; RV64I-NEXT:    mv a4, s5
+; RV64I-NEXT:    call __atomic_compare_exchange_2
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lh a0, 6(sp)
+; RV64I-NEXT:    beqz a1, .LBB98_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s6, 8(sp)
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_min_i16_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 48
+; RV64IA-NEXT:    sub a6, a3, a2
+; RV64IA-NEXT:    lui a4, 16
+; RV64IA-NEXT:    addiw a4, a4, -1
+; RV64IA-NEXT:    sllw a7, a4, a2
+; RV64IA-NEXT:    slli a1, a1, 48
+; RV64IA-NEXT:    srai a1, a1, 48
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB98_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aq a5, (a0)
+; RV64IA-NEXT:    and a4, a5, a7
+; RV64IA-NEXT:    mv a3, a5
+; RV64IA-NEXT:    sll a4, a4, a6
+; RV64IA-NEXT:    sra a4, a4, a6
+; RV64IA-NEXT:    bge a1, a4, .LBB98_3
+; RV64IA-NEXT:  # %bb.2: # in Loop: Header=BB98_1 Depth=1
+; RV64IA-NEXT:    xor a3, a5, a1
+; RV64IA-NEXT:    and a3, a3, a7
+; RV64IA-NEXT:    xor a3, a5, a3
+; RV64IA-NEXT:  .LBB98_3: # in Loop: Header=BB98_1 Depth=1
+; RV64IA-NEXT:    sc.w.rl a3, a3, (a0)
+; RV64IA-NEXT:    bnez a3, .LBB98_1
+; RV64IA-NEXT:  # %bb.4:
+; RV64IA-NEXT:    srlw a0, a5, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw min i16* %a, i16 %b acq_rel
   ret i16 %1
 }
 
 define i16 @atomicrmw_min_i16_seq_cst(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_min_i16_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    and a3, a3, a7
 ; RV32IA-NEXT:    xor a3, a5, a3
 ; RV32IA-NEXT:  .LBB99_3: # in Loop: Header=BB99_1 Depth=1
 ; RV32IA-NEXT:    sc.w.aqrl a3, a3, (a0)
 ; RV32IA-NEXT:    bnez a3, .LBB99_1
 ; RV32IA-NEXT:  # %bb.4:
 ; RV32IA-NEXT:    srl a0, a5, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_min_i16_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s4, a0
+; RV64I-NEXT:    lhu a0, 0(a0)
+; RV64I-NEXT:    slli a1, a1, 48
+; RV64I-NEXT:    srai s5, a1, 48
+; RV64I-NEXT:    addi s3, sp, 14
+; RV64I-NEXT:    addi s1, zero, 5
+; RV64I-NEXT:  .LBB99_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    slli a1, a0, 48
+; RV64I-NEXT:    srai a1, a1, 48
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bge s5, a1, .LBB99_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB99_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB99_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB99_1 Depth=1
+; RV64I-NEXT:    sh a0, 14(sp)
+; RV64I-NEXT:    mv a0, s4
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s1
+; RV64I-NEXT:    mv a4, s1
+; RV64I-NEXT:    call __atomic_compare_exchange_2
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lh a0, 14(sp)
+; RV64I-NEXT:    beqz a1, .LBB99_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_min_i16_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    slli a2, a0, 3
+; RV64IA-NEXT:    andi a2, a2, 24
+; RV64IA-NEXT:    addi a3, zero, 48
+; RV64IA-NEXT:    sub a6, a3, a2
+; RV64IA-NEXT:    lui a4, 16
+; RV64IA-NEXT:    addiw a4, a4, -1
+; RV64IA-NEXT:    sllw a7, a4, a2
+; RV64IA-NEXT:    slli a1, a1, 48
+; RV64IA-NEXT:    srai a1, a1, 48
+; RV64IA-NEXT:    sllw a1, a1, a2
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB99_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aqrl a5, (a0)
+; RV64IA-NEXT:    and a4, a5, a7
+; RV64IA-NEXT:    mv a3, a5
+; RV64IA-NEXT:    sll a4, a4, a6
+; RV64IA-NEXT:    sra a4, a4, a6
+; RV64IA-NEXT:    bge a1, a4, .LBB99_3
+; RV64IA-NEXT:  # %bb.2: # in Loop: Header=BB99_1 Depth=1
+; RV64IA-NEXT:    xor a3, a5, a1
+; RV64IA-NEXT:    and a3, a3, a7
+; RV64IA-NEXT:    xor a3, a5, a3
+; RV64IA-NEXT:  .LBB99_3: # in Loop: Header=BB99_1 Depth=1
+; RV64IA-NEXT:    sc.w.aqrl a3, a3, (a0)
+; RV64IA-NEXT:    bnez a3, .LBB99_1
+; RV64IA-NEXT:  # %bb.4:
+; RV64IA-NEXT:    srlw a0, a5, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw min i16* %a, i16 %b seq_cst
   ret i16 %1
 }
 
 define i16 @atomicrmw_umax_i16_monotonic(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_umax_i16_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    and a5, a5, a6
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:  .LBB100_3: # in Loop: Header=BB100_1 Depth=1
 ; RV32IA-NEXT:    sc.w a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB100_1
 ; RV32IA-NEXT:  # %bb.4:
 ; RV32IA-NEXT:    srl a0, a4, a3
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_umax_i16_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s4, a0
+; RV64I-NEXT:    lhu a0, 0(a0)
+; RV64I-NEXT:    lui a1, 16
+; RV64I-NEXT:    addiw s1, a1, -1
+; RV64I-NEXT:    and s5, s2, s1
+; RV64I-NEXT:    addi s3, sp, 14
+; RV64I-NEXT:  .LBB100_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    and a1, a0, s1
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bltu s5, a1, .LBB100_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB100_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB100_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB100_1 Depth=1
+; RV64I-NEXT:    sh a0, 14(sp)
+; RV64I-NEXT:    mv a0, s4
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, zero
+; RV64I-NEXT:    mv a4, zero
+; RV64I-NEXT:    call __atomic_compare_exchange_2
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lh a0, 14(sp)
+; RV64I-NEXT:    beqz a1, .LBB100_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_umax_i16_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a3, a0, 3
+; RV64IA-NEXT:    andi a3, a3, 24
+; RV64IA-NEXT:    sllw a6, a2, a3
+; RV64IA-NEXT:    sllw a1, a1, a3
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB100_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w a4, (a0)
+; RV64IA-NEXT:    and a2, a4, a6
+; RV64IA-NEXT:    mv a5, a4
+; RV64IA-NEXT:    bgeu a2, a1, .LBB100_3
+; RV64IA-NEXT:  # %bb.2: # in Loop: Header=BB100_1 Depth=1
+; RV64IA-NEXT:    xor a5, a4, a1
+; RV64IA-NEXT:    and a5, a5, a6
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:  .LBB100_3: # in Loop: Header=BB100_1 Depth=1
+; RV64IA-NEXT:    sc.w a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB100_1
+; RV64IA-NEXT:  # %bb.4:
+; RV64IA-NEXT:    srlw a0, a4, a3
+; RV64IA-NEXT:    ret
   %1 = atomicrmw umax i16* %a, i16 %b monotonic
   ret i16 %1
 }
 
 define i16 @atomicrmw_umax_i16_acquire(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_umax_i16_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    and a5, a5, a6
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:  .LBB101_3: # in Loop: Header=BB101_1 Depth=1
 ; RV32IA-NEXT:    sc.w a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB101_1
 ; RV32IA-NEXT:  # %bb.4:
 ; RV32IA-NEXT:    srl a0, a4, a3
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_umax_i16_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    sd s6, 8(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s4, a0
+; RV64I-NEXT:    lhu a0, 0(a0)
+; RV64I-NEXT:    lui a1, 16
+; RV64I-NEXT:    addiw s5, a1, -1
+; RV64I-NEXT:    and s6, s2, s5
+; RV64I-NEXT:    addi s3, sp, 6
+; RV64I-NEXT:    addi s1, zero, 2
+; RV64I-NEXT:  .LBB101_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    and a1, a0, s5
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bltu s6, a1, .LBB101_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB101_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB101_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB101_1 Depth=1
+; RV64I-NEXT:    sh a0, 6(sp)
+; RV64I-NEXT:    mv a0, s4
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s1
+; RV64I-NEXT:    mv a4, s1
+; RV64I-NEXT:    call __atomic_compare_exchange_2
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lh a0, 6(sp)
+; RV64I-NEXT:    beqz a1, .LBB101_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s6, 8(sp)
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_umax_i16_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a3, a0, 3
+; RV64IA-NEXT:    andi a3, a3, 24
+; RV64IA-NEXT:    sllw a6, a2, a3
+; RV64IA-NEXT:    sllw a1, a1, a3
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB101_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aq a4, (a0)
+; RV64IA-NEXT:    and a2, a4, a6
+; RV64IA-NEXT:    mv a5, a4
+; RV64IA-NEXT:    bgeu a2, a1, .LBB101_3
+; RV64IA-NEXT:  # %bb.2: # in Loop: Header=BB101_1 Depth=1
+; RV64IA-NEXT:    xor a5, a4, a1
+; RV64IA-NEXT:    and a5, a5, a6
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:  .LBB101_3: # in Loop: Header=BB101_1 Depth=1
+; RV64IA-NEXT:    sc.w a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB101_1
+; RV64IA-NEXT:  # %bb.4:
+; RV64IA-NEXT:    srlw a0, a4, a3
+; RV64IA-NEXT:    ret
   %1 = atomicrmw umax i16* %a, i16 %b acquire
   ret i16 %1
 }
 
 define i16 @atomicrmw_umax_i16_release(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_umax_i16_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    and a5, a5, a6
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:  .LBB102_3: # in Loop: Header=BB102_1 Depth=1
 ; RV32IA-NEXT:    sc.w.rl a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB102_1
 ; RV32IA-NEXT:  # %bb.4:
 ; RV32IA-NEXT:    srl a0, a4, a3
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_umax_i16_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    sd s6, 8(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s5, a0
+; RV64I-NEXT:    lhu a0, 0(a0)
+; RV64I-NEXT:    lui a1, 16
+; RV64I-NEXT:    addiw s1, a1, -1
+; RV64I-NEXT:    and s6, s2, s1
+; RV64I-NEXT:    addi s3, sp, 6
+; RV64I-NEXT:    addi s4, zero, 3
+; RV64I-NEXT:  .LBB102_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    and a1, a0, s1
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bltu s6, a1, .LBB102_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB102_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB102_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB102_1 Depth=1
+; RV64I-NEXT:    sh a0, 6(sp)
+; RV64I-NEXT:    mv a0, s5
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s4
+; RV64I-NEXT:    mv a4, zero
+; RV64I-NEXT:    call __atomic_compare_exchange_2
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lh a0, 6(sp)
+; RV64I-NEXT:    beqz a1, .LBB102_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s6, 8(sp)
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_umax_i16_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a3, a0, 3
+; RV64IA-NEXT:    andi a3, a3, 24
+; RV64IA-NEXT:    sllw a6, a2, a3
+; RV64IA-NEXT:    sllw a1, a1, a3
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB102_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w a4, (a0)
+; RV64IA-NEXT:    and a2, a4, a6
+; RV64IA-NEXT:    mv a5, a4
+; RV64IA-NEXT:    bgeu a2, a1, .LBB102_3
+; RV64IA-NEXT:  # %bb.2: # in Loop: Header=BB102_1 Depth=1
+; RV64IA-NEXT:    xor a5, a4, a1
+; RV64IA-NEXT:    and a5, a5, a6
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:  .LBB102_3: # in Loop: Header=BB102_1 Depth=1
+; RV64IA-NEXT:    sc.w.rl a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB102_1
+; RV64IA-NEXT:  # %bb.4:
+; RV64IA-NEXT:    srlw a0, a4, a3
+; RV64IA-NEXT:    ret
   %1 = atomicrmw umax i16* %a, i16 %b release
   ret i16 %1
 }
 
 define i16 @atomicrmw_umax_i16_acq_rel(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_umax_i16_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -48

 ; RV32IA-NEXT:    and a5, a5, a6
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:  .LBB103_3: # in Loop: Header=BB103_1 Depth=1
 ; RV32IA-NEXT:    sc.w.rl a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB103_1
 ; RV32IA-NEXT:  # %bb.4:
 ; RV32IA-NEXT:    srl a0, a4, a3
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_umax_i16_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -80
+; RV64I-NEXT:    sd ra, 72(sp)
+; RV64I-NEXT:    sd s1, 64(sp)
+; RV64I-NEXT:    sd s2, 56(sp)
+; RV64I-NEXT:    sd s3, 48(sp)
+; RV64I-NEXT:    sd s4, 40(sp)
+; RV64I-NEXT:    sd s5, 32(sp)
+; RV64I-NEXT:    sd s6, 24(sp)
+; RV64I-NEXT:    sd s7, 16(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s6, a0
+; RV64I-NEXT:    lhu a0, 0(a0)
+; RV64I-NEXT:    lui a1, 16
+; RV64I-NEXT:    addiw s1, a1, -1
+; RV64I-NEXT:    and s7, s2, s1
+; RV64I-NEXT:    addi s3, sp, 14
+; RV64I-NEXT:    addi s4, zero, 4
+; RV64I-NEXT:    addi s5, zero, 2
+; RV64I-NEXT:  .LBB103_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    and a1, a0, s1
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bltu s7, a1, .LBB103_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB103_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB103_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB103_1 Depth=1
+; RV64I-NEXT:    sh a0, 14(sp)
+; RV64I-NEXT:    mv a0, s6
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s4
+; RV64I-NEXT:    mv a4, s5
+; RV64I-NEXT:    call __atomic_compare_exchange_2
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lh a0, 14(sp)
+; RV64I-NEXT:    beqz a1, .LBB103_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s7, 16(sp)
+; RV64I-NEXT:    ld s6, 24(sp)
+; RV64I-NEXT:    ld s5, 32(sp)
+; RV64I-NEXT:    ld s4, 40(sp)
+; RV64I-NEXT:    ld s3, 48(sp)
+; RV64I-NEXT:    ld s2, 56(sp)
+; RV64I-NEXT:    ld s1, 64(sp)
+; RV64I-NEXT:    ld ra, 72(sp)
+; RV64I-NEXT:    addi sp, sp, 80
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_umax_i16_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a3, a0, 3
+; RV64IA-NEXT:    andi a3, a3, 24
+; RV64IA-NEXT:    sllw a6, a2, a3
+; RV64IA-NEXT:    sllw a1, a1, a3
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB103_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aq a4, (a0)
+; RV64IA-NEXT:    and a2, a4, a6
+; RV64IA-NEXT:    mv a5, a4
+; RV64IA-NEXT:    bgeu a2, a1, .LBB103_3
+; RV64IA-NEXT:  # %bb.2: # in Loop: Header=BB103_1 Depth=1
+; RV64IA-NEXT:    xor a5, a4, a1
+; RV64IA-NEXT:    and a5, a5, a6
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:  .LBB103_3: # in Loop: Header=BB103_1 Depth=1
+; RV64IA-NEXT:    sc.w.rl a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB103_1
+; RV64IA-NEXT:  # %bb.4:
+; RV64IA-NEXT:    srlw a0, a4, a3
+; RV64IA-NEXT:    ret
   %1 = atomicrmw umax i16* %a, i16 %b acq_rel
   ret i16 %1
 }
 
 define i16 @atomicrmw_umax_i16_seq_cst(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_umax_i16_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    and a5, a5, a6
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:  .LBB104_3: # in Loop: Header=BB104_1 Depth=1
 ; RV32IA-NEXT:    sc.w.aqrl a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB104_1
 ; RV32IA-NEXT:  # %bb.4:
 ; RV32IA-NEXT:    srl a0, a4, a3
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_umax_i16_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    sd s6, 8(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s4, a0
+; RV64I-NEXT:    lhu a0, 0(a0)
+; RV64I-NEXT:    lui a1, 16
+; RV64I-NEXT:    addiw s5, a1, -1
+; RV64I-NEXT:    and s6, s2, s5
+; RV64I-NEXT:    addi s3, sp, 6
+; RV64I-NEXT:    addi s1, zero, 5
+; RV64I-NEXT:  .LBB104_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    and a1, a0, s5
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bltu s6, a1, .LBB104_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB104_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB104_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB104_1 Depth=1
+; RV64I-NEXT:    sh a0, 6(sp)
+; RV64I-NEXT:    mv a0, s4
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s1
+; RV64I-NEXT:    mv a4, s1
+; RV64I-NEXT:    call __atomic_compare_exchange_2
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lh a0, 6(sp)
+; RV64I-NEXT:    beqz a1, .LBB104_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s6, 8(sp)
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_umax_i16_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a3, a0, 3
+; RV64IA-NEXT:    andi a3, a3, 24
+; RV64IA-NEXT:    sllw a6, a2, a3
+; RV64IA-NEXT:    sllw a1, a1, a3
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB104_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aqrl a4, (a0)
+; RV64IA-NEXT:    and a2, a4, a6
+; RV64IA-NEXT:    mv a5, a4
+; RV64IA-NEXT:    bgeu a2, a1, .LBB104_3
+; RV64IA-NEXT:  # %bb.2: # in Loop: Header=BB104_1 Depth=1
+; RV64IA-NEXT:    xor a5, a4, a1
+; RV64IA-NEXT:    and a5, a5, a6
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:  .LBB104_3: # in Loop: Header=BB104_1 Depth=1
+; RV64IA-NEXT:    sc.w.aqrl a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB104_1
+; RV64IA-NEXT:  # %bb.4:
+; RV64IA-NEXT:    srlw a0, a4, a3
+; RV64IA-NEXT:    ret
   %1 = atomicrmw umax i16* %a, i16 %b seq_cst
   ret i16 %1
 }
 
 define i16 @atomicrmw_umin_i16_monotonic(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_umin_i16_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    and a5, a5, a6
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:  .LBB105_3: # in Loop: Header=BB105_1 Depth=1
 ; RV32IA-NEXT:    sc.w a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB105_1
 ; RV32IA-NEXT:  # %bb.4:
 ; RV32IA-NEXT:    srl a0, a4, a3
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_umin_i16_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s4, a0
+; RV64I-NEXT:    lhu a0, 0(a0)
+; RV64I-NEXT:    lui a1, 16
+; RV64I-NEXT:    addiw s1, a1, -1
+; RV64I-NEXT:    and s5, s2, s1
+; RV64I-NEXT:    addi s3, sp, 14
+; RV64I-NEXT:  .LBB105_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    and a1, a0, s1
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bgeu s5, a1, .LBB105_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB105_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB105_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB105_1 Depth=1
+; RV64I-NEXT:    sh a0, 14(sp)
+; RV64I-NEXT:    mv a0, s4
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, zero
+; RV64I-NEXT:    mv a4, zero
+; RV64I-NEXT:    call __atomic_compare_exchange_2
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lh a0, 14(sp)
+; RV64I-NEXT:    beqz a1, .LBB105_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_umin_i16_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a3, a0, 3
+; RV64IA-NEXT:    andi a3, a3, 24
+; RV64IA-NEXT:    sllw a6, a2, a3
+; RV64IA-NEXT:    sllw a1, a1, a3
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB105_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w a4, (a0)
+; RV64IA-NEXT:    and a2, a4, a6
+; RV64IA-NEXT:    mv a5, a4
+; RV64IA-NEXT:    bgeu a1, a2, .LBB105_3
+; RV64IA-NEXT:  # %bb.2: # in Loop: Header=BB105_1 Depth=1
+; RV64IA-NEXT:    xor a5, a4, a1
+; RV64IA-NEXT:    and a5, a5, a6
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:  .LBB105_3: # in Loop: Header=BB105_1 Depth=1
+; RV64IA-NEXT:    sc.w a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB105_1
+; RV64IA-NEXT:  # %bb.4:
+; RV64IA-NEXT:    srlw a0, a4, a3
+; RV64IA-NEXT:    ret
   %1 = atomicrmw umin i16* %a, i16 %b monotonic
   ret i16 %1
 }
 
 define i16 @atomicrmw_umin_i16_acquire(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_umin_i16_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    and a5, a5, a6
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:  .LBB106_3: # in Loop: Header=BB106_1 Depth=1
 ; RV32IA-NEXT:    sc.w a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB106_1
 ; RV32IA-NEXT:  # %bb.4:
 ; RV32IA-NEXT:    srl a0, a4, a3
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_umin_i16_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    sd s6, 8(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s4, a0
+; RV64I-NEXT:    lhu a0, 0(a0)
+; RV64I-NEXT:    lui a1, 16
+; RV64I-NEXT:    addiw s5, a1, -1
+; RV64I-NEXT:    and s6, s2, s5
+; RV64I-NEXT:    addi s3, sp, 6
+; RV64I-NEXT:    addi s1, zero, 2
+; RV64I-NEXT:  .LBB106_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    and a1, a0, s5
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bgeu s6, a1, .LBB106_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB106_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB106_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB106_1 Depth=1
+; RV64I-NEXT:    sh a0, 6(sp)
+; RV64I-NEXT:    mv a0, s4
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s1
+; RV64I-NEXT:    mv a4, s1
+; RV64I-NEXT:    call __atomic_compare_exchange_2
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lh a0, 6(sp)
+; RV64I-NEXT:    beqz a1, .LBB106_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s6, 8(sp)
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_umin_i16_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a3, a0, 3
+; RV64IA-NEXT:    andi a3, a3, 24
+; RV64IA-NEXT:    sllw a6, a2, a3
+; RV64IA-NEXT:    sllw a1, a1, a3
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB106_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aq a4, (a0)
+; RV64IA-NEXT:    and a2, a4, a6
+; RV64IA-NEXT:    mv a5, a4
+; RV64IA-NEXT:    bgeu a1, a2, .LBB106_3
+; RV64IA-NEXT:  # %bb.2: # in Loop: Header=BB106_1 Depth=1
+; RV64IA-NEXT:    xor a5, a4, a1
+; RV64IA-NEXT:    and a5, a5, a6
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:  .LBB106_3: # in Loop: Header=BB106_1 Depth=1
+; RV64IA-NEXT:    sc.w a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB106_1
+; RV64IA-NEXT:  # %bb.4:
+; RV64IA-NEXT:    srlw a0, a4, a3
+; RV64IA-NEXT:    ret
   %1 = atomicrmw umin i16* %a, i16 %b acquire
   ret i16 %1
 }
 
 define i16 @atomicrmw_umin_i16_release(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_umin_i16_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    and a5, a5, a6
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:  .LBB107_3: # in Loop: Header=BB107_1 Depth=1
 ; RV32IA-NEXT:    sc.w.rl a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB107_1
 ; RV32IA-NEXT:  # %bb.4:
 ; RV32IA-NEXT:    srl a0, a4, a3
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_umin_i16_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    sd s6, 8(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s5, a0
+; RV64I-NEXT:    lhu a0, 0(a0)
+; RV64I-NEXT:    lui a1, 16
+; RV64I-NEXT:    addiw s1, a1, -1
+; RV64I-NEXT:    and s6, s2, s1
+; RV64I-NEXT:    addi s3, sp, 6
+; RV64I-NEXT:    addi s4, zero, 3
+; RV64I-NEXT:  .LBB107_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    and a1, a0, s1
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bgeu s6, a1, .LBB107_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB107_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB107_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB107_1 Depth=1
+; RV64I-NEXT:    sh a0, 6(sp)
+; RV64I-NEXT:    mv a0, s5
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s4
+; RV64I-NEXT:    mv a4, zero
+; RV64I-NEXT:    call __atomic_compare_exchange_2
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lh a0, 6(sp)
+; RV64I-NEXT:    beqz a1, .LBB107_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s6, 8(sp)
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_umin_i16_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a3, a0, 3
+; RV64IA-NEXT:    andi a3, a3, 24
+; RV64IA-NEXT:    sllw a6, a2, a3
+; RV64IA-NEXT:    sllw a1, a1, a3
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB107_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w a4, (a0)
+; RV64IA-NEXT:    and a2, a4, a6
+; RV64IA-NEXT:    mv a5, a4
+; RV64IA-NEXT:    bgeu a1, a2, .LBB107_3
+; RV64IA-NEXT:  # %bb.2: # in Loop: Header=BB107_1 Depth=1
+; RV64IA-NEXT:    xor a5, a4, a1
+; RV64IA-NEXT:    and a5, a5, a6
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:  .LBB107_3: # in Loop: Header=BB107_1 Depth=1
+; RV64IA-NEXT:    sc.w.rl a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB107_1
+; RV64IA-NEXT:  # %bb.4:
+; RV64IA-NEXT:    srlw a0, a4, a3
+; RV64IA-NEXT:    ret
   %1 = atomicrmw umin i16* %a, i16 %b release
   ret i16 %1
 }
 
 define i16 @atomicrmw_umin_i16_acq_rel(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_umin_i16_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -48

 ; RV32IA-NEXT:    and a5, a5, a6
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:  .LBB108_3: # in Loop: Header=BB108_1 Depth=1
 ; RV32IA-NEXT:    sc.w.rl a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB108_1
 ; RV32IA-NEXT:  # %bb.4:
 ; RV32IA-NEXT:    srl a0, a4, a3
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_umin_i16_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -80
+; RV64I-NEXT:    sd ra, 72(sp)
+; RV64I-NEXT:    sd s1, 64(sp)
+; RV64I-NEXT:    sd s2, 56(sp)
+; RV64I-NEXT:    sd s3, 48(sp)
+; RV64I-NEXT:    sd s4, 40(sp)
+; RV64I-NEXT:    sd s5, 32(sp)
+; RV64I-NEXT:    sd s6, 24(sp)
+; RV64I-NEXT:    sd s7, 16(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s6, a0
+; RV64I-NEXT:    lhu a0, 0(a0)
+; RV64I-NEXT:    lui a1, 16
+; RV64I-NEXT:    addiw s1, a1, -1
+; RV64I-NEXT:    and s7, s2, s1
+; RV64I-NEXT:    addi s3, sp, 14
+; RV64I-NEXT:    addi s4, zero, 4
+; RV64I-NEXT:    addi s5, zero, 2
+; RV64I-NEXT:  .LBB108_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    and a1, a0, s1
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bgeu s7, a1, .LBB108_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB108_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB108_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB108_1 Depth=1
+; RV64I-NEXT:    sh a0, 14(sp)
+; RV64I-NEXT:    mv a0, s6
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s4
+; RV64I-NEXT:    mv a4, s5
+; RV64I-NEXT:    call __atomic_compare_exchange_2
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lh a0, 14(sp)
+; RV64I-NEXT:    beqz a1, .LBB108_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s7, 16(sp)
+; RV64I-NEXT:    ld s6, 24(sp)
+; RV64I-NEXT:    ld s5, 32(sp)
+; RV64I-NEXT:    ld s4, 40(sp)
+; RV64I-NEXT:    ld s3, 48(sp)
+; RV64I-NEXT:    ld s2, 56(sp)
+; RV64I-NEXT:    ld s1, 64(sp)
+; RV64I-NEXT:    ld ra, 72(sp)
+; RV64I-NEXT:    addi sp, sp, 80
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_umin_i16_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a3, a0, 3
+; RV64IA-NEXT:    andi a3, a3, 24
+; RV64IA-NEXT:    sllw a6, a2, a3
+; RV64IA-NEXT:    sllw a1, a1, a3
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB108_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aq a4, (a0)
+; RV64IA-NEXT:    and a2, a4, a6
+; RV64IA-NEXT:    mv a5, a4
+; RV64IA-NEXT:    bgeu a1, a2, .LBB108_3
+; RV64IA-NEXT:  # %bb.2: # in Loop: Header=BB108_1 Depth=1
+; RV64IA-NEXT:    xor a5, a4, a1
+; RV64IA-NEXT:    and a5, a5, a6
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:  .LBB108_3: # in Loop: Header=BB108_1 Depth=1
+; RV64IA-NEXT:    sc.w.rl a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB108_1
+; RV64IA-NEXT:  # %bb.4:
+; RV64IA-NEXT:    srlw a0, a4, a3
+; RV64IA-NEXT:    ret
   %1 = atomicrmw umin i16* %a, i16 %b acq_rel
   ret i16 %1
 }
 
 define i16 @atomicrmw_umin_i16_seq_cst(i16 *%a, i16 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_umin_i16_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    and a5, a5, a6
 ; RV32IA-NEXT:    xor a5, a4, a5
 ; RV32IA-NEXT:  .LBB109_3: # in Loop: Header=BB109_1 Depth=1
 ; RV32IA-NEXT:    sc.w.aqrl a5, a5, (a0)
 ; RV32IA-NEXT:    bnez a5, .LBB109_1
 ; RV32IA-NEXT:  # %bb.4:
 ; RV32IA-NEXT:    srl a0, a4, a3
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_umin_i16_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    sd s6, 8(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s4, a0
+; RV64I-NEXT:    lhu a0, 0(a0)
+; RV64I-NEXT:    lui a1, 16
+; RV64I-NEXT:    addiw s5, a1, -1
+; RV64I-NEXT:    and s6, s2, s5
+; RV64I-NEXT:    addi s3, sp, 6
+; RV64I-NEXT:    addi s1, zero, 5
+; RV64I-NEXT:  .LBB109_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    and a1, a0, s5
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bgeu s6, a1, .LBB109_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB109_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB109_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB109_1 Depth=1
+; RV64I-NEXT:    sh a0, 6(sp)
+; RV64I-NEXT:    mv a0, s4
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s1
+; RV64I-NEXT:    mv a4, s1
+; RV64I-NEXT:    call __atomic_compare_exchange_2
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lh a0, 6(sp)
+; RV64I-NEXT:    beqz a1, .LBB109_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s6, 8(sp)
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_umin_i16_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    lui a2, 16
+; RV64IA-NEXT:    addiw a2, a2, -1
+; RV64IA-NEXT:    and a1, a1, a2
+; RV64IA-NEXT:    slli a3, a0, 3
+; RV64IA-NEXT:    andi a3, a3, 24
+; RV64IA-NEXT:    sllw a6, a2, a3
+; RV64IA-NEXT:    sllw a1, a1, a3
+; RV64IA-NEXT:    andi a0, a0, -4
+; RV64IA-NEXT:  .LBB109_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aqrl a4, (a0)
+; RV64IA-NEXT:    and a2, a4, a6
+; RV64IA-NEXT:    mv a5, a4
+; RV64IA-NEXT:    bgeu a1, a2, .LBB109_3
+; RV64IA-NEXT:  # %bb.2: # in Loop: Header=BB109_1 Depth=1
+; RV64IA-NEXT:    xor a5, a4, a1
+; RV64IA-NEXT:    and a5, a5, a6
+; RV64IA-NEXT:    xor a5, a4, a5
+; RV64IA-NEXT:  .LBB109_3: # in Loop: Header=BB109_1 Depth=1
+; RV64IA-NEXT:    sc.w.aqrl a5, a5, (a0)
+; RV64IA-NEXT:    bnez a5, .LBB109_1
+; RV64IA-NEXT:  # %bb.4:
+; RV64IA-NEXT:    srlw a0, a4, a3
+; RV64IA-NEXT:    ret
   %1 = atomicrmw umin i16* %a, i16 %b seq_cst
   ret i16 %1
 }
 
 define i32 @atomicrmw_xchg_i32_monotonic(i32* %a, i32 %b) {
 ; RV32I-LABEL: atomicrmw_xchg_i32_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    mv a2, zero
 ; RV32I-NEXT:    call __atomic_exchange_4
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_xchg_i32_monotonic:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amoswap.w a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_xchg_i32_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a2, zero
+; RV64I-NEXT:    call __atomic_exchange_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_xchg_i32_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoswap.w a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw xchg i32* %a, i32 %b monotonic
   ret i32 %1
 }
 
 define i32 @atomicrmw_xchg_i32_acquire(i32* %a, i32 %b) {
 ; RV32I-LABEL: atomicrmw_xchg_i32_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a2, zero, 2
 ; RV32I-NEXT:    call __atomic_exchange_4
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_xchg_i32_acquire:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amoswap.w.aq a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_xchg_i32_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 2
+; RV64I-NEXT:    call __atomic_exchange_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_xchg_i32_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoswap.w.aq a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw xchg i32* %a, i32 %b acquire
   ret i32 %1
 }
 
 define i32 @atomicrmw_xchg_i32_release(i32* %a, i32 %b) {
 ; RV32I-LABEL: atomicrmw_xchg_i32_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a2, zero, 3
 ; RV32I-NEXT:    call __atomic_exchange_4
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_xchg_i32_release:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amoswap.w.rl a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_xchg_i32_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 3
+; RV64I-NEXT:    call __atomic_exchange_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_xchg_i32_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoswap.w.rl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw xchg i32* %a, i32 %b release
   ret i32 %1
 }
 
 define i32 @atomicrmw_xchg_i32_acq_rel(i32* %a, i32 %b) {
 ; RV32I-LABEL: atomicrmw_xchg_i32_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a2, zero, 4
 ; RV32I-NEXT:    call __atomic_exchange_4
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_xchg_i32_acq_rel:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amoswap.w.aqrl a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_xchg_i32_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 4
+; RV64I-NEXT:    call __atomic_exchange_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_xchg_i32_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoswap.w.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw xchg i32* %a, i32 %b acq_rel
   ret i32 %1
 }
 
 define i32 @atomicrmw_xchg_i32_seq_cst(i32* %a, i32 %b) {
 ; RV32I-LABEL: atomicrmw_xchg_i32_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a2, zero, 5
 ; RV32I-NEXT:    call __atomic_exchange_4
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_xchg_i32_seq_cst:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amoswap.w.aqrl a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_xchg_i32_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 5
+; RV64I-NEXT:    call __atomic_exchange_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_xchg_i32_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoswap.w.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw xchg i32* %a, i32 %b seq_cst
   ret i32 %1
 }
 
 define i32 @atomicrmw_add_i32_monotonic(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_add_i32_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    mv a2, zero
 ; RV32I-NEXT:    call __atomic_fetch_add_4
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_add_i32_monotonic:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amoadd.w a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_add_i32_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a2, zero
+; RV64I-NEXT:    call __atomic_fetch_add_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_add_i32_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoadd.w a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw add i32* %a, i32 %b monotonic
   ret i32 %1
 }
 
 define i32 @atomicrmw_add_i32_acquire(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_add_i32_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a2, zero, 2
 ; RV32I-NEXT:    call __atomic_fetch_add_4
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_add_i32_acquire:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amoadd.w.aq a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_add_i32_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 2
+; RV64I-NEXT:    call __atomic_fetch_add_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_add_i32_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoadd.w.aq a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw add i32* %a, i32 %b acquire
   ret i32 %1
 }
 
 define i32 @atomicrmw_add_i32_release(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_add_i32_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a2, zero, 3
 ; RV32I-NEXT:    call __atomic_fetch_add_4
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_add_i32_release:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amoadd.w.rl a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_add_i32_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 3
+; RV64I-NEXT:    call __atomic_fetch_add_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_add_i32_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoadd.w.rl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw add i32* %a, i32 %b release
   ret i32 %1
 }
 
 define i32 @atomicrmw_add_i32_acq_rel(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_add_i32_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a2, zero, 4
 ; RV32I-NEXT:    call __atomic_fetch_add_4
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_add_i32_acq_rel:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amoadd.w.aqrl a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_add_i32_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 4
+; RV64I-NEXT:    call __atomic_fetch_add_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_add_i32_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoadd.w.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw add i32* %a, i32 %b acq_rel
   ret i32 %1
 }
 
 define i32 @atomicrmw_add_i32_seq_cst(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_add_i32_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a2, zero, 5
 ; RV32I-NEXT:    call __atomic_fetch_add_4
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_add_i32_seq_cst:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amoadd.w.aqrl a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_add_i32_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 5
+; RV64I-NEXT:    call __atomic_fetch_add_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_add_i32_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoadd.w.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw add i32* %a, i32 %b seq_cst
   ret i32 %1
 }
 
 define i32 @atomicrmw_sub_i32_monotonic(i32* %a, i32 %b) {
 ; RV32I-LABEL: atomicrmw_sub_i32_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    mv a2, zero
 ; RV32I-NEXT:    call __atomic_fetch_sub_4
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_sub_i32_monotonic:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    neg a1, a1
 ; RV32IA-NEXT:    amoadd.w a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_sub_i32_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a2, zero
+; RV64I-NEXT:    call __atomic_fetch_sub_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_sub_i32_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    neg a1, a1
+; RV64IA-NEXT:    amoadd.w a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw sub i32* %a, i32 %b monotonic
   ret i32 %1
 }
 
 define i32 @atomicrmw_sub_i32_acquire(i32* %a, i32 %b) {
 ; RV32I-LABEL: atomicrmw_sub_i32_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a2, zero, 2
 ; RV32I-NEXT:    call __atomic_fetch_sub_4
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_sub_i32_acquire:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    neg a1, a1
 ; RV32IA-NEXT:    amoadd.w.aq a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_sub_i32_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 2
+; RV64I-NEXT:    call __atomic_fetch_sub_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_sub_i32_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    neg a1, a1
+; RV64IA-NEXT:    amoadd.w.aq a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw sub i32* %a, i32 %b acquire
   ret i32 %1
 }
 
 define i32 @atomicrmw_sub_i32_release(i32* %a, i32 %b) {
 ; RV32I-LABEL: atomicrmw_sub_i32_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a2, zero, 3
 ; RV32I-NEXT:    call __atomic_fetch_sub_4
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_sub_i32_release:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    neg a1, a1
 ; RV32IA-NEXT:    amoadd.w.rl a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_sub_i32_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 3
+; RV64I-NEXT:    call __atomic_fetch_sub_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_sub_i32_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    neg a1, a1
+; RV64IA-NEXT:    amoadd.w.rl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw sub i32* %a, i32 %b release
   ret i32 %1
 }
 
 define i32 @atomicrmw_sub_i32_acq_rel(i32* %a, i32 %b) {
 ; RV32I-LABEL: atomicrmw_sub_i32_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a2, zero, 4
 ; RV32I-NEXT:    call __atomic_fetch_sub_4
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_sub_i32_acq_rel:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    neg a1, a1
 ; RV32IA-NEXT:    amoadd.w.aqrl a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_sub_i32_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 4
+; RV64I-NEXT:    call __atomic_fetch_sub_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_sub_i32_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    neg a1, a1
+; RV64IA-NEXT:    amoadd.w.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw sub i32* %a, i32 %b acq_rel
   ret i32 %1
 }
 
 define i32 @atomicrmw_sub_i32_seq_cst(i32* %a, i32 %b) {
 ; RV32I-LABEL: atomicrmw_sub_i32_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a2, zero, 5
 ; RV32I-NEXT:    call __atomic_fetch_sub_4
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_sub_i32_seq_cst:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    neg a1, a1
 ; RV32IA-NEXT:    amoadd.w.aqrl a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_sub_i32_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 5
+; RV64I-NEXT:    call __atomic_fetch_sub_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_sub_i32_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    neg a1, a1
+; RV64IA-NEXT:    amoadd.w.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw sub i32* %a, i32 %b seq_cst
   ret i32 %1
 }
 
 define i32 @atomicrmw_and_i32_monotonic(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_and_i32_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    mv a2, zero
 ; RV32I-NEXT:    call __atomic_fetch_and_4
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_and_i32_monotonic:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amoand.w a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_and_i32_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a2, zero
+; RV64I-NEXT:    call __atomic_fetch_and_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_and_i32_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoand.w a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw and i32* %a, i32 %b monotonic
   ret i32 %1
 }
 
 define i32 @atomicrmw_and_i32_acquire(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_and_i32_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a2, zero, 2
 ; RV32I-NEXT:    call __atomic_fetch_and_4
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_and_i32_acquire:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amoand.w.aq a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_and_i32_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 2
+; RV64I-NEXT:    call __atomic_fetch_and_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_and_i32_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoand.w.aq a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw and i32* %a, i32 %b acquire
   ret i32 %1
 }
 
 define i32 @atomicrmw_and_i32_release(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_and_i32_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a2, zero, 3
 ; RV32I-NEXT:    call __atomic_fetch_and_4
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_and_i32_release:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amoand.w.rl a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_and_i32_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 3
+; RV64I-NEXT:    call __atomic_fetch_and_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_and_i32_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoand.w.rl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw and i32* %a, i32 %b release
   ret i32 %1
 }
 
 define i32 @atomicrmw_and_i32_acq_rel(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_and_i32_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a2, zero, 4
 ; RV32I-NEXT:    call __atomic_fetch_and_4
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_and_i32_acq_rel:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amoand.w.aqrl a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_and_i32_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 4
+; RV64I-NEXT:    call __atomic_fetch_and_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_and_i32_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoand.w.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw and i32* %a, i32 %b acq_rel
   ret i32 %1
 }
 
 define i32 @atomicrmw_and_i32_seq_cst(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_and_i32_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a2, zero, 5
 ; RV32I-NEXT:    call __atomic_fetch_and_4
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_and_i32_seq_cst:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amoand.w.aqrl a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_and_i32_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 5
+; RV64I-NEXT:    call __atomic_fetch_and_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_and_i32_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoand.w.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw and i32* %a, i32 %b seq_cst
   ret i32 %1
 }
 
 define i32 @atomicrmw_nand_i32_monotonic(i32* %a, i32 %b) {
 ; RV32I-LABEL: atomicrmw_nand_i32_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    lr.w a2, (a0)
 ; RV32IA-NEXT:    and a3, a2, a1
 ; RV32IA-NEXT:    not a3, a3
 ; RV32IA-NEXT:    sc.w a3, a3, (a0)
 ; RV32IA-NEXT:    bnez a3, .LBB130_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    mv a0, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_nand_i32_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a2, zero
+; RV64I-NEXT:    call __atomic_fetch_nand_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_nand_i32_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:  .LBB130_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w a2, (a0)
+; RV64IA-NEXT:    and a3, a2, a1
+; RV64IA-NEXT:    not a3, a3
+; RV64IA-NEXT:    sc.w a3, a3, (a0)
+; RV64IA-NEXT:    bnez a3, .LBB130_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    mv a0, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw nand i32* %a, i32 %b monotonic
   ret i32 %1
 }
 
 define i32 @atomicrmw_nand_i32_acquire(i32* %a, i32 %b) {
 ; RV32I-LABEL: atomicrmw_nand_i32_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    lr.w.aq a2, (a0)
 ; RV32IA-NEXT:    and a3, a2, a1
 ; RV32IA-NEXT:    not a3, a3
 ; RV32IA-NEXT:    sc.w a3, a3, (a0)
 ; RV32IA-NEXT:    bnez a3, .LBB131_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    mv a0, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_nand_i32_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 2
+; RV64I-NEXT:    call __atomic_fetch_nand_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_nand_i32_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:  .LBB131_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aq a2, (a0)
+; RV64IA-NEXT:    and a3, a2, a1
+; RV64IA-NEXT:    not a3, a3
+; RV64IA-NEXT:    sc.w a3, a3, (a0)
+; RV64IA-NEXT:    bnez a3, .LBB131_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    mv a0, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw nand i32* %a, i32 %b acquire
   ret i32 %1
 }
 
 define i32 @atomicrmw_nand_i32_release(i32* %a, i32 %b) {
 ; RV32I-LABEL: atomicrmw_nand_i32_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    lr.w a2, (a0)
 ; RV32IA-NEXT:    and a3, a2, a1
 ; RV32IA-NEXT:    not a3, a3
 ; RV32IA-NEXT:    sc.w.rl a3, a3, (a0)
 ; RV32IA-NEXT:    bnez a3, .LBB132_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    mv a0, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_nand_i32_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 3
+; RV64I-NEXT:    call __atomic_fetch_nand_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_nand_i32_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:  .LBB132_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w a2, (a0)
+; RV64IA-NEXT:    and a3, a2, a1
+; RV64IA-NEXT:    not a3, a3
+; RV64IA-NEXT:    sc.w.rl a3, a3, (a0)
+; RV64IA-NEXT:    bnez a3, .LBB132_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    mv a0, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw nand i32* %a, i32 %b release
   ret i32 %1
 }
 
 define i32 @atomicrmw_nand_i32_acq_rel(i32* %a, i32 %b) {
 ; RV32I-LABEL: atomicrmw_nand_i32_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    lr.w.aq a2, (a0)
 ; RV32IA-NEXT:    and a3, a2, a1
 ; RV32IA-NEXT:    not a3, a3
 ; RV32IA-NEXT:    sc.w.rl a3, a3, (a0)
 ; RV32IA-NEXT:    bnez a3, .LBB133_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    mv a0, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_nand_i32_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 4
+; RV64I-NEXT:    call __atomic_fetch_nand_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_nand_i32_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:  .LBB133_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aq a2, (a0)
+; RV64IA-NEXT:    and a3, a2, a1
+; RV64IA-NEXT:    not a3, a3
+; RV64IA-NEXT:    sc.w.rl a3, a3, (a0)
+; RV64IA-NEXT:    bnez a3, .LBB133_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    mv a0, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw nand i32* %a, i32 %b acq_rel
   ret i32 %1
 }
 
 define i32 @atomicrmw_nand_i32_seq_cst(i32* %a, i32 %b) {
 ; RV32I-LABEL: atomicrmw_nand_i32_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16

 ; RV32IA-NEXT:    lr.w.aqrl a2, (a0)
 ; RV32IA-NEXT:    and a3, a2, a1
 ; RV32IA-NEXT:    not a3, a3
 ; RV32IA-NEXT:    sc.w.aqrl a3, a3, (a0)
 ; RV32IA-NEXT:    bnez a3, .LBB134_1
 ; RV32IA-NEXT:  # %bb.2:
 ; RV32IA-NEXT:    mv a0, a2
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_nand_i32_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 5
+; RV64I-NEXT:    call __atomic_fetch_nand_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_nand_i32_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:  .LBB134_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.w.aqrl a2, (a0)
+; RV64IA-NEXT:    and a3, a2, a1
+; RV64IA-NEXT:    not a3, a3
+; RV64IA-NEXT:    sc.w.aqrl a3, a3, (a0)
+; RV64IA-NEXT:    bnez a3, .LBB134_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    mv a0, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw nand i32* %a, i32 %b seq_cst
   ret i32 %1
 }
 
 define i32 @atomicrmw_or_i32_monotonic(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_or_i32_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    mv a2, zero
 ; RV32I-NEXT:    call __atomic_fetch_or_4
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_or_i32_monotonic:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amoor.w a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_or_i32_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a2, zero
+; RV64I-NEXT:    call __atomic_fetch_or_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_or_i32_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoor.w a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw or i32* %a, i32 %b monotonic
   ret i32 %1
 }
 
 define i32 @atomicrmw_or_i32_acquire(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_or_i32_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a2, zero, 2
 ; RV32I-NEXT:    call __atomic_fetch_or_4
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_or_i32_acquire:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amoor.w.aq a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_or_i32_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 2
+; RV64I-NEXT:    call __atomic_fetch_or_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_or_i32_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoor.w.aq a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw or i32* %a, i32 %b acquire
   ret i32 %1
 }
 
 define i32 @atomicrmw_or_i32_release(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_or_i32_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a2, zero, 3
 ; RV32I-NEXT:    call __atomic_fetch_or_4
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_or_i32_release:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amoor.w.rl a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_or_i32_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 3
+; RV64I-NEXT:    call __atomic_fetch_or_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_or_i32_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoor.w.rl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw or i32* %a, i32 %b release
   ret i32 %1
 }
 
 define i32 @atomicrmw_or_i32_acq_rel(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_or_i32_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a2, zero, 4
 ; RV32I-NEXT:    call __atomic_fetch_or_4
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_or_i32_acq_rel:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amoor.w.aqrl a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_or_i32_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 4
+; RV64I-NEXT:    call __atomic_fetch_or_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_or_i32_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoor.w.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw or i32* %a, i32 %b acq_rel
   ret i32 %1
 }
 
 define i32 @atomicrmw_or_i32_seq_cst(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_or_i32_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a2, zero, 5
 ; RV32I-NEXT:    call __atomic_fetch_or_4
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_or_i32_seq_cst:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amoor.w.aqrl a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_or_i32_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 5
+; RV64I-NEXT:    call __atomic_fetch_or_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_or_i32_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoor.w.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw or i32* %a, i32 %b seq_cst
   ret i32 %1
 }
 
 define i32 @atomicrmw_xor_i32_monotonic(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_xor_i32_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    mv a2, zero
 ; RV32I-NEXT:    call __atomic_fetch_xor_4
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_xor_i32_monotonic:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amoxor.w a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_xor_i32_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a2, zero
+; RV64I-NEXT:    call __atomic_fetch_xor_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_xor_i32_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoxor.w a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw xor i32* %a, i32 %b monotonic
   ret i32 %1
 }
 
 define i32 @atomicrmw_xor_i32_acquire(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_xor_i32_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a2, zero, 2
 ; RV32I-NEXT:    call __atomic_fetch_xor_4
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_xor_i32_acquire:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amoxor.w.aq a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_xor_i32_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 2
+; RV64I-NEXT:    call __atomic_fetch_xor_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_xor_i32_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoxor.w.aq a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw xor i32* %a, i32 %b acquire
   ret i32 %1
 }
 
 define i32 @atomicrmw_xor_i32_release(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_xor_i32_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a2, zero, 3
 ; RV32I-NEXT:    call __atomic_fetch_xor_4
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_xor_i32_release:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amoxor.w.rl a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_xor_i32_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 3
+; RV64I-NEXT:    call __atomic_fetch_xor_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_xor_i32_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoxor.w.rl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw xor i32* %a, i32 %b release
   ret i32 %1
 }
 
 define i32 @atomicrmw_xor_i32_acq_rel(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_xor_i32_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a2, zero, 4
 ; RV32I-NEXT:    call __atomic_fetch_xor_4
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_xor_i32_acq_rel:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amoxor.w.aqrl a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_xor_i32_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 4
+; RV64I-NEXT:    call __atomic_fetch_xor_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_xor_i32_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoxor.w.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw xor i32* %a, i32 %b acq_rel
   ret i32 %1
 }
 
 define i32 @atomicrmw_xor_i32_seq_cst(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_xor_i32_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a2, zero, 5
 ; RV32I-NEXT:    call __atomic_fetch_xor_4
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_xor_i32_seq_cst:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amoxor.w.aqrl a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_xor_i32_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 5
+; RV64I-NEXT:    call __atomic_fetch_xor_4
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_xor_i32_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoxor.w.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw xor i32* %a, i32 %b seq_cst
   ret i32 %1
 }
 
 define i32 @atomicrmw_max_i32_monotonic(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_max_i32_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32I-NEXT:    lw ra, 28(sp)
 ; RV32I-NEXT:    addi sp, sp, 32
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_max_i32_monotonic:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amomax.w a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_max_i32_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -48
+; RV64I-NEXT:    sd ra, 40(sp)
+; RV64I-NEXT:    sd s1, 32(sp)
+; RV64I-NEXT:    sd s2, 24(sp)
+; RV64I-NEXT:    sd s3, 16(sp)
+; RV64I-NEXT:    sd s4, 8(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s4, a0
+; RV64I-NEXT:    lwu a0, 0(a0)
+; RV64I-NEXT:    sext.w s1, a1
+; RV64I-NEXT:    addi s3, sp, 4
+; RV64I-NEXT:  .LBB145_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    sext.w a1, a0
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    blt s1, a1, .LBB145_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB145_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB145_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB145_1 Depth=1
+; RV64I-NEXT:    sw a0, 4(sp)
+; RV64I-NEXT:    mv a0, s4
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, zero
+; RV64I-NEXT:    mv a4, zero
+; RV64I-NEXT:    call __atomic_compare_exchange_4
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lw a0, 4(sp)
+; RV64I-NEXT:    beqz a1, .LBB145_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s4, 8(sp)
+; RV64I-NEXT:    ld s3, 16(sp)
+; RV64I-NEXT:    ld s2, 24(sp)
+; RV64I-NEXT:    ld s1, 32(sp)
+; RV64I-NEXT:    ld ra, 40(sp)
+; RV64I-NEXT:    addi sp, sp, 48
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_max_i32_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amomax.w a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw max i32* %a, i32 %b monotonic
   ret i32 %1
 }
 
 define i32 @atomicrmw_max_i32_acquire(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_max_i32_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32I-NEXT:    lw ra, 28(sp)
 ; RV32I-NEXT:    addi sp, sp, 32
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_max_i32_acquire:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amomax.w.aq a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_max_i32_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s4, a0
+; RV64I-NEXT:    lwu a0, 0(a0)
+; RV64I-NEXT:    sext.w s5, a1
+; RV64I-NEXT:    addi s3, sp, 12
+; RV64I-NEXT:    addi s1, zero, 2
+; RV64I-NEXT:  .LBB146_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    sext.w a1, a0
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    blt s5, a1, .LBB146_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB146_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB146_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB146_1 Depth=1
+; RV64I-NEXT:    sw a0, 12(sp)
+; RV64I-NEXT:    mv a0, s4
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s1
+; RV64I-NEXT:    mv a4, s1
+; RV64I-NEXT:    call __atomic_compare_exchange_4
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lw a0, 12(sp)
+; RV64I-NEXT:    beqz a1, .LBB146_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_max_i32_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amomax.w.aq a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw max i32* %a, i32 %b acquire
   ret i32 %1
 }
 
 define i32 @atomicrmw_max_i32_release(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_max_i32_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32I-NEXT:    lw ra, 28(sp)
 ; RV32I-NEXT:    addi sp, sp, 32
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_max_i32_release:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amomax.w.rl a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_max_i32_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s5, a0
+; RV64I-NEXT:    lwu a0, 0(a0)
+; RV64I-NEXT:    sext.w s1, a1
+; RV64I-NEXT:    addi s3, sp, 12
+; RV64I-NEXT:    addi s4, zero, 3
+; RV64I-NEXT:  .LBB147_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    sext.w a1, a0
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    blt s1, a1, .LBB147_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB147_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB147_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB147_1 Depth=1
+; RV64I-NEXT:    sw a0, 12(sp)
+; RV64I-NEXT:    mv a0, s5
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s4
+; RV64I-NEXT:    mv a4, zero
+; RV64I-NEXT:    call __atomic_compare_exchange_4
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lw a0, 12(sp)
+; RV64I-NEXT:    beqz a1, .LBB147_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_max_i32_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amomax.w.rl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw max i32* %a, i32 %b release
   ret i32 %1
 }
 
 define i32 @atomicrmw_max_i32_acq_rel(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_max_i32_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32I-NEXT:    lw ra, 28(sp)
 ; RV32I-NEXT:    addi sp, sp, 32
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_max_i32_acq_rel:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amomax.w.aqrl a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_max_i32_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    sd s6, 8(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s6, a0
+; RV64I-NEXT:    lwu a0, 0(a0)
+; RV64I-NEXT:    sext.w s1, a1
+; RV64I-NEXT:    addi s3, sp, 4
+; RV64I-NEXT:    addi s4, zero, 4
+; RV64I-NEXT:    addi s5, zero, 2
+; RV64I-NEXT:  .LBB148_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    sext.w a1, a0
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    blt s1, a1, .LBB148_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB148_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB148_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB148_1 Depth=1
+; RV64I-NEXT:    sw a0, 4(sp)
+; RV64I-NEXT:    mv a0, s6
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s4
+; RV64I-NEXT:    mv a4, s5
+; RV64I-NEXT:    call __atomic_compare_exchange_4
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lw a0, 4(sp)
+; RV64I-NEXT:    beqz a1, .LBB148_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s6, 8(sp)
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_max_i32_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amomax.w.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw max i32* %a, i32 %b acq_rel
   ret i32 %1
 }
 
 define i32 @atomicrmw_max_i32_seq_cst(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_max_i32_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32I-NEXT:    lw ra, 28(sp)
 ; RV32I-NEXT:    addi sp, sp, 32
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_max_i32_seq_cst:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amomax.w.aqrl a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_max_i32_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s4, a0
+; RV64I-NEXT:    lwu a0, 0(a0)
+; RV64I-NEXT:    sext.w s5, a1
+; RV64I-NEXT:    addi s3, sp, 12
+; RV64I-NEXT:    addi s1, zero, 5
+; RV64I-NEXT:  .LBB149_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    sext.w a1, a0
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    blt s5, a1, .LBB149_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB149_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB149_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB149_1 Depth=1
+; RV64I-NEXT:    sw a0, 12(sp)
+; RV64I-NEXT:    mv a0, s4
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s1
+; RV64I-NEXT:    mv a4, s1
+; RV64I-NEXT:    call __atomic_compare_exchange_4
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lw a0, 12(sp)
+; RV64I-NEXT:    beqz a1, .LBB149_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_max_i32_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amomax.w.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw max i32* %a, i32 %b seq_cst
   ret i32 %1
 }
 
 define i32 @atomicrmw_min_i32_monotonic(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_min_i32_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32I-NEXT:    lw ra, 28(sp)
 ; RV32I-NEXT:    addi sp, sp, 32
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_min_i32_monotonic:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amomin.w a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_min_i32_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -48
+; RV64I-NEXT:    sd ra, 40(sp)
+; RV64I-NEXT:    sd s1, 32(sp)
+; RV64I-NEXT:    sd s2, 24(sp)
+; RV64I-NEXT:    sd s3, 16(sp)
+; RV64I-NEXT:    sd s4, 8(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s4, a0
+; RV64I-NEXT:    lwu a0, 0(a0)
+; RV64I-NEXT:    sext.w s1, a1
+; RV64I-NEXT:    addi s3, sp, 4
+; RV64I-NEXT:  .LBB150_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    sext.w a1, a0
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bge s1, a1, .LBB150_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB150_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB150_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB150_1 Depth=1
+; RV64I-NEXT:    sw a0, 4(sp)
+; RV64I-NEXT:    mv a0, s4
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, zero
+; RV64I-NEXT:    mv a4, zero
+; RV64I-NEXT:    call __atomic_compare_exchange_4
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lw a0, 4(sp)
+; RV64I-NEXT:    beqz a1, .LBB150_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s4, 8(sp)
+; RV64I-NEXT:    ld s3, 16(sp)
+; RV64I-NEXT:    ld s2, 24(sp)
+; RV64I-NEXT:    ld s1, 32(sp)
+; RV64I-NEXT:    ld ra, 40(sp)
+; RV64I-NEXT:    addi sp, sp, 48
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_min_i32_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amomin.w a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw min i32* %a, i32 %b monotonic
   ret i32 %1
 }
 
 define i32 @atomicrmw_min_i32_acquire(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_min_i32_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32I-NEXT:    lw ra, 28(sp)
 ; RV32I-NEXT:    addi sp, sp, 32
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_min_i32_acquire:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amomin.w.aq a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_min_i32_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s4, a0
+; RV64I-NEXT:    lwu a0, 0(a0)
+; RV64I-NEXT:    sext.w s5, a1
+; RV64I-NEXT:    addi s3, sp, 12
+; RV64I-NEXT:    addi s1, zero, 2
+; RV64I-NEXT:  .LBB151_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    sext.w a1, a0
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bge s5, a1, .LBB151_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB151_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB151_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB151_1 Depth=1
+; RV64I-NEXT:    sw a0, 12(sp)
+; RV64I-NEXT:    mv a0, s4
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s1
+; RV64I-NEXT:    mv a4, s1
+; RV64I-NEXT:    call __atomic_compare_exchange_4
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lw a0, 12(sp)
+; RV64I-NEXT:    beqz a1, .LBB151_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_min_i32_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amomin.w.aq a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw min i32* %a, i32 %b acquire
   ret i32 %1
 }
 
 define i32 @atomicrmw_min_i32_release(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_min_i32_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32I-NEXT:    lw ra, 28(sp)
 ; RV32I-NEXT:    addi sp, sp, 32
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_min_i32_release:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amomin.w.rl a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_min_i32_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s5, a0
+; RV64I-NEXT:    lwu a0, 0(a0)
+; RV64I-NEXT:    sext.w s1, a1
+; RV64I-NEXT:    addi s3, sp, 12
+; RV64I-NEXT:    addi s4, zero, 3
+; RV64I-NEXT:  .LBB152_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    sext.w a1, a0
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bge s1, a1, .LBB152_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB152_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB152_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB152_1 Depth=1
+; RV64I-NEXT:    sw a0, 12(sp)
+; RV64I-NEXT:    mv a0, s5
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s4
+; RV64I-NEXT:    mv a4, zero
+; RV64I-NEXT:    call __atomic_compare_exchange_4
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lw a0, 12(sp)
+; RV64I-NEXT:    beqz a1, .LBB152_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_min_i32_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amomin.w.rl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw min i32* %a, i32 %b release
   ret i32 %1
 }
 
 define i32 @atomicrmw_min_i32_acq_rel(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_min_i32_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32I-NEXT:    lw ra, 28(sp)
 ; RV32I-NEXT:    addi sp, sp, 32
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_min_i32_acq_rel:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amomin.w.aqrl a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_min_i32_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    sd s6, 8(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s6, a0
+; RV64I-NEXT:    lwu a0, 0(a0)
+; RV64I-NEXT:    sext.w s1, a1
+; RV64I-NEXT:    addi s3, sp, 4
+; RV64I-NEXT:    addi s4, zero, 4
+; RV64I-NEXT:    addi s5, zero, 2
+; RV64I-NEXT:  .LBB153_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    sext.w a1, a0
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bge s1, a1, .LBB153_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB153_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB153_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB153_1 Depth=1
+; RV64I-NEXT:    sw a0, 4(sp)
+; RV64I-NEXT:    mv a0, s6
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s4
+; RV64I-NEXT:    mv a4, s5
+; RV64I-NEXT:    call __atomic_compare_exchange_4
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lw a0, 4(sp)
+; RV64I-NEXT:    beqz a1, .LBB153_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s6, 8(sp)
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_min_i32_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amomin.w.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw min i32* %a, i32 %b acq_rel
   ret i32 %1
 }
 
 define i32 @atomicrmw_min_i32_seq_cst(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_min_i32_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32I-NEXT:    lw ra, 28(sp)
 ; RV32I-NEXT:    addi sp, sp, 32
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_min_i32_seq_cst:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amomin.w.aqrl a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_min_i32_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s4, a0
+; RV64I-NEXT:    lwu a0, 0(a0)
+; RV64I-NEXT:    sext.w s5, a1
+; RV64I-NEXT:    addi s3, sp, 12
+; RV64I-NEXT:    addi s1, zero, 5
+; RV64I-NEXT:  .LBB154_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    sext.w a1, a0
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bge s5, a1, .LBB154_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB154_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB154_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB154_1 Depth=1
+; RV64I-NEXT:    sw a0, 12(sp)
+; RV64I-NEXT:    mv a0, s4
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s1
+; RV64I-NEXT:    mv a4, s1
+; RV64I-NEXT:    call __atomic_compare_exchange_4
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lw a0, 12(sp)
+; RV64I-NEXT:    beqz a1, .LBB154_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_min_i32_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amomin.w.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw min i32* %a, i32 %b seq_cst
   ret i32 %1
 }
 
 define i32 @atomicrmw_umax_i32_monotonic(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_umax_i32_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32I-NEXT:    lw ra, 28(sp)
 ; RV32I-NEXT:    addi sp, sp, 32
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_umax_i32_monotonic:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amomaxu.w a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_umax_i32_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -48
+; RV64I-NEXT:    sd ra, 40(sp)
+; RV64I-NEXT:    sd s1, 32(sp)
+; RV64I-NEXT:    sd s2, 24(sp)
+; RV64I-NEXT:    sd s3, 16(sp)
+; RV64I-NEXT:    sd s4, 8(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s4, a0
+; RV64I-NEXT:    lwu a0, 0(a0)
+; RV64I-NEXT:    sext.w s1, a1
+; RV64I-NEXT:    addi s3, sp, 4
+; RV64I-NEXT:  .LBB155_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    sext.w a1, a0
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bltu s1, a1, .LBB155_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB155_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB155_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB155_1 Depth=1
+; RV64I-NEXT:    sw a0, 4(sp)
+; RV64I-NEXT:    mv a0, s4
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, zero
+; RV64I-NEXT:    mv a4, zero
+; RV64I-NEXT:    call __atomic_compare_exchange_4
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lw a0, 4(sp)
+; RV64I-NEXT:    beqz a1, .LBB155_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s4, 8(sp)
+; RV64I-NEXT:    ld s3, 16(sp)
+; RV64I-NEXT:    ld s2, 24(sp)
+; RV64I-NEXT:    ld s1, 32(sp)
+; RV64I-NEXT:    ld ra, 40(sp)
+; RV64I-NEXT:    addi sp, sp, 48
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_umax_i32_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amomaxu.w a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw umax i32* %a, i32 %b monotonic
   ret i32 %1
 }
 
 define i32 @atomicrmw_umax_i32_acquire(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_umax_i32_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32I-NEXT:    lw ra, 28(sp)
 ; RV32I-NEXT:    addi sp, sp, 32
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_umax_i32_acquire:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amomaxu.w.aq a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_umax_i32_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s4, a0
+; RV64I-NEXT:    lwu a0, 0(a0)
+; RV64I-NEXT:    sext.w s5, a1
+; RV64I-NEXT:    addi s3, sp, 12
+; RV64I-NEXT:    addi s1, zero, 2
+; RV64I-NEXT:  .LBB156_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    sext.w a1, a0
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bltu s5, a1, .LBB156_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB156_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB156_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB156_1 Depth=1
+; RV64I-NEXT:    sw a0, 12(sp)
+; RV64I-NEXT:    mv a0, s4
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s1
+; RV64I-NEXT:    mv a4, s1
+; RV64I-NEXT:    call __atomic_compare_exchange_4
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lw a0, 12(sp)
+; RV64I-NEXT:    beqz a1, .LBB156_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_umax_i32_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amomaxu.w.aq a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw umax i32* %a, i32 %b acquire
   ret i32 %1
 }
 
 define i32 @atomicrmw_umax_i32_release(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_umax_i32_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32I-NEXT:    lw ra, 28(sp)
 ; RV32I-NEXT:    addi sp, sp, 32
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_umax_i32_release:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amomaxu.w.rl a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_umax_i32_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s5, a0
+; RV64I-NEXT:    lwu a0, 0(a0)
+; RV64I-NEXT:    sext.w s1, a1
+; RV64I-NEXT:    addi s3, sp, 12
+; RV64I-NEXT:    addi s4, zero, 3
+; RV64I-NEXT:  .LBB157_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    sext.w a1, a0
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bltu s1, a1, .LBB157_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB157_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB157_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB157_1 Depth=1
+; RV64I-NEXT:    sw a0, 12(sp)
+; RV64I-NEXT:    mv a0, s5
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s4
+; RV64I-NEXT:    mv a4, zero
+; RV64I-NEXT:    call __atomic_compare_exchange_4
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lw a0, 12(sp)
+; RV64I-NEXT:    beqz a1, .LBB157_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_umax_i32_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amomaxu.w.rl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw umax i32* %a, i32 %b release
   ret i32 %1
 }
 
 define i32 @atomicrmw_umax_i32_acq_rel(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_umax_i32_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32I-NEXT:    lw ra, 28(sp)
 ; RV32I-NEXT:    addi sp, sp, 32
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_umax_i32_acq_rel:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amomaxu.w.aqrl a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_umax_i32_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    sd s6, 8(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s6, a0
+; RV64I-NEXT:    lwu a0, 0(a0)
+; RV64I-NEXT:    sext.w s1, a1
+; RV64I-NEXT:    addi s3, sp, 4
+; RV64I-NEXT:    addi s4, zero, 4
+; RV64I-NEXT:    addi s5, zero, 2
+; RV64I-NEXT:  .LBB158_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    sext.w a1, a0
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bltu s1, a1, .LBB158_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB158_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB158_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB158_1 Depth=1
+; RV64I-NEXT:    sw a0, 4(sp)
+; RV64I-NEXT:    mv a0, s6
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s4
+; RV64I-NEXT:    mv a4, s5
+; RV64I-NEXT:    call __atomic_compare_exchange_4
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lw a0, 4(sp)
+; RV64I-NEXT:    beqz a1, .LBB158_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s6, 8(sp)
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_umax_i32_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amomaxu.w.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw umax i32* %a, i32 %b acq_rel
   ret i32 %1
 }
 
 define i32 @atomicrmw_umax_i32_seq_cst(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_umax_i32_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32I-NEXT:    lw ra, 28(sp)
 ; RV32I-NEXT:    addi sp, sp, 32
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_umax_i32_seq_cst:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amomaxu.w.aqrl a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_umax_i32_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s4, a0
+; RV64I-NEXT:    lwu a0, 0(a0)
+; RV64I-NEXT:    sext.w s5, a1
+; RV64I-NEXT:    addi s3, sp, 12
+; RV64I-NEXT:    addi s1, zero, 5
+; RV64I-NEXT:  .LBB159_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    sext.w a1, a0
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bltu s5, a1, .LBB159_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB159_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB159_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB159_1 Depth=1
+; RV64I-NEXT:    sw a0, 12(sp)
+; RV64I-NEXT:    mv a0, s4
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s1
+; RV64I-NEXT:    mv a4, s1
+; RV64I-NEXT:    call __atomic_compare_exchange_4
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lw a0, 12(sp)
+; RV64I-NEXT:    beqz a1, .LBB159_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_umax_i32_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amomaxu.w.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw umax i32* %a, i32 %b seq_cst
   ret i32 %1
 }
 
 define i32 @atomicrmw_umin_i32_monotonic(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_umin_i32_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32I-NEXT:    lw ra, 28(sp)
 ; RV32I-NEXT:    addi sp, sp, 32
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_umin_i32_monotonic:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amominu.w a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_umin_i32_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -48
+; RV64I-NEXT:    sd ra, 40(sp)
+; RV64I-NEXT:    sd s1, 32(sp)
+; RV64I-NEXT:    sd s2, 24(sp)
+; RV64I-NEXT:    sd s3, 16(sp)
+; RV64I-NEXT:    sd s4, 8(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s4, a0
+; RV64I-NEXT:    lwu a0, 0(a0)
+; RV64I-NEXT:    sext.w s1, a1
+; RV64I-NEXT:    addi s3, sp, 4
+; RV64I-NEXT:  .LBB160_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    sext.w a1, a0
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bgeu s1, a1, .LBB160_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB160_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB160_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB160_1 Depth=1
+; RV64I-NEXT:    sw a0, 4(sp)
+; RV64I-NEXT:    mv a0, s4
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, zero
+; RV64I-NEXT:    mv a4, zero
+; RV64I-NEXT:    call __atomic_compare_exchange_4
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lw a0, 4(sp)
+; RV64I-NEXT:    beqz a1, .LBB160_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s4, 8(sp)
+; RV64I-NEXT:    ld s3, 16(sp)
+; RV64I-NEXT:    ld s2, 24(sp)
+; RV64I-NEXT:    ld s1, 32(sp)
+; RV64I-NEXT:    ld ra, 40(sp)
+; RV64I-NEXT:    addi sp, sp, 48
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_umin_i32_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amominu.w a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw umin i32* %a, i32 %b monotonic
   ret i32 %1
 }
 
 define i32 @atomicrmw_umin_i32_acquire(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_umin_i32_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32I-NEXT:    lw ra, 28(sp)
 ; RV32I-NEXT:    addi sp, sp, 32
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_umin_i32_acquire:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amominu.w.aq a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_umin_i32_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s4, a0
+; RV64I-NEXT:    lwu a0, 0(a0)
+; RV64I-NEXT:    sext.w s5, a1
+; RV64I-NEXT:    addi s3, sp, 12
+; RV64I-NEXT:    addi s1, zero, 2
+; RV64I-NEXT:  .LBB161_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    sext.w a1, a0
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bgeu s5, a1, .LBB161_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB161_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB161_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB161_1 Depth=1
+; RV64I-NEXT:    sw a0, 12(sp)
+; RV64I-NEXT:    mv a0, s4
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s1
+; RV64I-NEXT:    mv a4, s1
+; RV64I-NEXT:    call __atomic_compare_exchange_4
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lw a0, 12(sp)
+; RV64I-NEXT:    beqz a1, .LBB161_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_umin_i32_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amominu.w.aq a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw umin i32* %a, i32 %b acquire
   ret i32 %1
 }
 
 define i32 @atomicrmw_umin_i32_release(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_umin_i32_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32I-NEXT:    lw ra, 28(sp)
 ; RV32I-NEXT:    addi sp, sp, 32
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_umin_i32_release:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amominu.w.rl a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_umin_i32_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s5, a0
+; RV64I-NEXT:    lwu a0, 0(a0)
+; RV64I-NEXT:    sext.w s1, a1
+; RV64I-NEXT:    addi s3, sp, 12
+; RV64I-NEXT:    addi s4, zero, 3
+; RV64I-NEXT:  .LBB162_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    sext.w a1, a0
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bgeu s1, a1, .LBB162_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB162_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB162_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB162_1 Depth=1
+; RV64I-NEXT:    sw a0, 12(sp)
+; RV64I-NEXT:    mv a0, s5
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s4
+; RV64I-NEXT:    mv a4, zero
+; RV64I-NEXT:    call __atomic_compare_exchange_4
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lw a0, 12(sp)
+; RV64I-NEXT:    beqz a1, .LBB162_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_umin_i32_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amominu.w.rl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw umin i32* %a, i32 %b release
   ret i32 %1
 }
 
 define i32 @atomicrmw_umin_i32_acq_rel(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_umin_i32_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32I-NEXT:    lw ra, 28(sp)
 ; RV32I-NEXT:    addi sp, sp, 32
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_umin_i32_acq_rel:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amominu.w.aqrl a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_umin_i32_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    sd s6, 8(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s6, a0
+; RV64I-NEXT:    lwu a0, 0(a0)
+; RV64I-NEXT:    sext.w s1, a1
+; RV64I-NEXT:    addi s3, sp, 4
+; RV64I-NEXT:    addi s4, zero, 4
+; RV64I-NEXT:    addi s5, zero, 2
+; RV64I-NEXT:  .LBB163_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    sext.w a1, a0
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bgeu s1, a1, .LBB163_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB163_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB163_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB163_1 Depth=1
+; RV64I-NEXT:    sw a0, 4(sp)
+; RV64I-NEXT:    mv a0, s6
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s4
+; RV64I-NEXT:    mv a4, s5
+; RV64I-NEXT:    call __atomic_compare_exchange_4
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lw a0, 4(sp)
+; RV64I-NEXT:    beqz a1, .LBB163_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s6, 8(sp)
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_umin_i32_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amominu.w.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw umin i32* %a, i32 %b acq_rel
   ret i32 %1
 }
 
 define i32 @atomicrmw_umin_i32_seq_cst(i32 *%a, i32 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_umin_i32_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32I-NEXT:    lw ra, 28(sp)
 ; RV32I-NEXT:    addi sp, sp, 32
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_umin_i32_seq_cst:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    amominu.w.aqrl a0, a1, (a0)
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_umin_i32_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    mv s4, a0
+; RV64I-NEXT:    lwu a0, 0(a0)
+; RV64I-NEXT:    sext.w s5, a1
+; RV64I-NEXT:    addi s3, sp, 12
+; RV64I-NEXT:    addi s1, zero, 5
+; RV64I-NEXT:  .LBB164_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    sext.w a1, a0
+; RV64I-NEXT:    mv a2, a0
+; RV64I-NEXT:    bgeu s5, a1, .LBB164_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB164_1 Depth=1
+; RV64I-NEXT:    mv a2, s2
+; RV64I-NEXT:  .LBB164_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB164_1 Depth=1
+; RV64I-NEXT:    sw a0, 12(sp)
+; RV64I-NEXT:    mv a0, s4
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s1
+; RV64I-NEXT:    mv a4, s1
+; RV64I-NEXT:    call __atomic_compare_exchange_4
+; RV64I-NEXT:    mv a1, a0
+; RV64I-NEXT:    lw a0, 12(sp)
+; RV64I-NEXT:    beqz a1, .LBB164_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_umin_i32_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amominu.w.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw umin i32* %a, i32 %b seq_cst
   ret i32 %1
 }
 
 define i64 @atomicrmw_xchg_i64_monotonic(i64* %a, i64 %b) {
 ; RV32I-LABEL: atomicrmw_xchg_i64_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    mv a3, zero
 ; RV32I-NEXT:    call __atomic_exchange_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_xchg_i64_monotonic:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    mv a3, zero
 ; RV32IA-NEXT:    call __atomic_exchange_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_xchg_i64_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a2, zero
+; RV64I-NEXT:    call __atomic_exchange_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_xchg_i64_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoswap.d a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw xchg i64* %a, i64 %b monotonic
   ret i64 %1
 }
 
 define i64 @atomicrmw_xchg_i64_acquire(i64* %a, i64 %b) {
 ; RV32I-LABEL: atomicrmw_xchg_i64_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a3, zero, 2
 ; RV32I-NEXT:    call __atomic_exchange_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_xchg_i64_acquire:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    addi a3, zero, 2
 ; RV32IA-NEXT:    call __atomic_exchange_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_xchg_i64_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 2
+; RV64I-NEXT:    call __atomic_exchange_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_xchg_i64_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoswap.d.aq a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw xchg i64* %a, i64 %b acquire
   ret i64 %1
 }
 
 define i64 @atomicrmw_xchg_i64_release(i64* %a, i64 %b) {
 ; RV32I-LABEL: atomicrmw_xchg_i64_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a3, zero, 3
 ; RV32I-NEXT:    call __atomic_exchange_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_xchg_i64_release:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    addi a3, zero, 3
 ; RV32IA-NEXT:    call __atomic_exchange_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_xchg_i64_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 3
+; RV64I-NEXT:    call __atomic_exchange_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_xchg_i64_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoswap.d.rl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw xchg i64* %a, i64 %b release
   ret i64 %1
 }
 
 define i64 @atomicrmw_xchg_i64_acq_rel(i64* %a, i64 %b) {
 ; RV32I-LABEL: atomicrmw_xchg_i64_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a3, zero, 4
 ; RV32I-NEXT:    call __atomic_exchange_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_xchg_i64_acq_rel:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    addi a3, zero, 4
 ; RV32IA-NEXT:    call __atomic_exchange_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_xchg_i64_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 4
+; RV64I-NEXT:    call __atomic_exchange_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_xchg_i64_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoswap.d.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw xchg i64* %a, i64 %b acq_rel
   ret i64 %1
 }
 
 define i64 @atomicrmw_xchg_i64_seq_cst(i64* %a, i64 %b) {
 ; RV32I-LABEL: atomicrmw_xchg_i64_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a3, zero, 5
 ; RV32I-NEXT:    call __atomic_exchange_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_xchg_i64_seq_cst:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    addi a3, zero, 5
 ; RV32IA-NEXT:    call __atomic_exchange_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_xchg_i64_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 5
+; RV64I-NEXT:    call __atomic_exchange_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_xchg_i64_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoswap.d.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw xchg i64* %a, i64 %b seq_cst
   ret i64 %1
 }
 
 define i64 @atomicrmw_add_i64_monotonic(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_add_i64_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    mv a3, zero
 ; RV32I-NEXT:    call __atomic_fetch_add_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_add_i64_monotonic:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    mv a3, zero
 ; RV32IA-NEXT:    call __atomic_fetch_add_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_add_i64_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a2, zero
+; RV64I-NEXT:    call __atomic_fetch_add_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_add_i64_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoadd.d a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw add i64* %a, i64 %b monotonic
   ret i64 %1
 }
 
 define i64 @atomicrmw_add_i64_acquire(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_add_i64_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a3, zero, 2
 ; RV32I-NEXT:    call __atomic_fetch_add_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_add_i64_acquire:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    addi a3, zero, 2
 ; RV32IA-NEXT:    call __atomic_fetch_add_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_add_i64_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 2
+; RV64I-NEXT:    call __atomic_fetch_add_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_add_i64_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoadd.d.aq a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw add i64* %a, i64 %b acquire
   ret i64 %1
 }
 
 define i64 @atomicrmw_add_i64_release(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_add_i64_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a3, zero, 3
 ; RV32I-NEXT:    call __atomic_fetch_add_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_add_i64_release:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    addi a3, zero, 3
 ; RV32IA-NEXT:    call __atomic_fetch_add_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_add_i64_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 3
+; RV64I-NEXT:    call __atomic_fetch_add_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_add_i64_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoadd.d.rl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw add i64* %a, i64 %b release
   ret i64 %1
 }
 
 define i64 @atomicrmw_add_i64_acq_rel(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_add_i64_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a3, zero, 4
 ; RV32I-NEXT:    call __atomic_fetch_add_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_add_i64_acq_rel:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    addi a3, zero, 4
 ; RV32IA-NEXT:    call __atomic_fetch_add_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_add_i64_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 4
+; RV64I-NEXT:    call __atomic_fetch_add_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_add_i64_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoadd.d.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw add i64* %a, i64 %b acq_rel
   ret i64 %1
 }
 
 define i64 @atomicrmw_add_i64_seq_cst(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_add_i64_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a3, zero, 5
 ; RV32I-NEXT:    call __atomic_fetch_add_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_add_i64_seq_cst:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    addi a3, zero, 5
 ; RV32IA-NEXT:    call __atomic_fetch_add_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_add_i64_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 5
+; RV64I-NEXT:    call __atomic_fetch_add_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_add_i64_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoadd.d.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw add i64* %a, i64 %b seq_cst
   ret i64 %1
 }
 
 define i64 @atomicrmw_sub_i64_monotonic(i64* %a, i64 %b) {
 ; RV32I-LABEL: atomicrmw_sub_i64_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    mv a3, zero
 ; RV32I-NEXT:    call __atomic_fetch_sub_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_sub_i64_monotonic:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    mv a3, zero
 ; RV32IA-NEXT:    call __atomic_fetch_sub_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_sub_i64_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a2, zero
+; RV64I-NEXT:    call __atomic_fetch_sub_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_sub_i64_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    neg a1, a1
+; RV64IA-NEXT:    amoadd.d a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw sub i64* %a, i64 %b monotonic
   ret i64 %1
 }
 
 define i64 @atomicrmw_sub_i64_acquire(i64* %a, i64 %b) {
 ; RV32I-LABEL: atomicrmw_sub_i64_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a3, zero, 2
 ; RV32I-NEXT:    call __atomic_fetch_sub_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_sub_i64_acquire:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    addi a3, zero, 2
 ; RV32IA-NEXT:    call __atomic_fetch_sub_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_sub_i64_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 2
+; RV64I-NEXT:    call __atomic_fetch_sub_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_sub_i64_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    neg a1, a1
+; RV64IA-NEXT:    amoadd.d.aq a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw sub i64* %a, i64 %b acquire
   ret i64 %1
 }
 
 define i64 @atomicrmw_sub_i64_release(i64* %a, i64 %b) {
 ; RV32I-LABEL: atomicrmw_sub_i64_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a3, zero, 3
 ; RV32I-NEXT:    call __atomic_fetch_sub_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_sub_i64_release:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    addi a3, zero, 3
 ; RV32IA-NEXT:    call __atomic_fetch_sub_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_sub_i64_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 3
+; RV64I-NEXT:    call __atomic_fetch_sub_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_sub_i64_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    neg a1, a1
+; RV64IA-NEXT:    amoadd.d.rl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw sub i64* %a, i64 %b release
   ret i64 %1
 }
 
 define i64 @atomicrmw_sub_i64_acq_rel(i64* %a, i64 %b) {
 ; RV32I-LABEL: atomicrmw_sub_i64_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a3, zero, 4
 ; RV32I-NEXT:    call __atomic_fetch_sub_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_sub_i64_acq_rel:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    addi a3, zero, 4
 ; RV32IA-NEXT:    call __atomic_fetch_sub_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_sub_i64_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 4
+; RV64I-NEXT:    call __atomic_fetch_sub_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_sub_i64_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    neg a1, a1
+; RV64IA-NEXT:    amoadd.d.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw sub i64* %a, i64 %b acq_rel
   ret i64 %1
 }
 
 define i64 @atomicrmw_sub_i64_seq_cst(i64* %a, i64 %b) {
 ; RV32I-LABEL: atomicrmw_sub_i64_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a3, zero, 5
 ; RV32I-NEXT:    call __atomic_fetch_sub_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_sub_i64_seq_cst:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    addi a3, zero, 5
 ; RV32IA-NEXT:    call __atomic_fetch_sub_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_sub_i64_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 5
+; RV64I-NEXT:    call __atomic_fetch_sub_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_sub_i64_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    neg a1, a1
+; RV64IA-NEXT:    amoadd.d.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw sub i64* %a, i64 %b seq_cst
   ret i64 %1
 }
 
 define i64 @atomicrmw_and_i64_monotonic(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_and_i64_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    mv a3, zero
 ; RV32I-NEXT:    call __atomic_fetch_and_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_and_i64_monotonic:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    mv a3, zero
 ; RV32IA-NEXT:    call __atomic_fetch_and_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_and_i64_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a2, zero
+; RV64I-NEXT:    call __atomic_fetch_and_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_and_i64_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoand.d a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw and i64* %a, i64 %b monotonic
   ret i64 %1
 }
 
 define i64 @atomicrmw_and_i64_acquire(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_and_i64_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a3, zero, 2
 ; RV32I-NEXT:    call __atomic_fetch_and_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_and_i64_acquire:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    addi a3, zero, 2
 ; RV32IA-NEXT:    call __atomic_fetch_and_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_and_i64_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 2
+; RV64I-NEXT:    call __atomic_fetch_and_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_and_i64_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoand.d.aq a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw and i64* %a, i64 %b acquire
   ret i64 %1
 }
 
 define i64 @atomicrmw_and_i64_release(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_and_i64_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a3, zero, 3
 ; RV32I-NEXT:    call __atomic_fetch_and_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_and_i64_release:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    addi a3, zero, 3
 ; RV32IA-NEXT:    call __atomic_fetch_and_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_and_i64_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 3
+; RV64I-NEXT:    call __atomic_fetch_and_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_and_i64_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoand.d.rl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw and i64* %a, i64 %b release
   ret i64 %1
 }
 
 define i64 @atomicrmw_and_i64_acq_rel(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_and_i64_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a3, zero, 4
 ; RV32I-NEXT:    call __atomic_fetch_and_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_and_i64_acq_rel:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    addi a3, zero, 4
 ; RV32IA-NEXT:    call __atomic_fetch_and_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_and_i64_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 4
+; RV64I-NEXT:    call __atomic_fetch_and_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_and_i64_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoand.d.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw and i64* %a, i64 %b acq_rel
   ret i64 %1
 }
 
 define i64 @atomicrmw_and_i64_seq_cst(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_and_i64_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a3, zero, 5
 ; RV32I-NEXT:    call __atomic_fetch_and_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_and_i64_seq_cst:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    addi a3, zero, 5
 ; RV32IA-NEXT:    call __atomic_fetch_and_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_and_i64_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 5
+; RV64I-NEXT:    call __atomic_fetch_and_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_and_i64_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoand.d.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw and i64* %a, i64 %b seq_cst
   ret i64 %1
 }
 
 define i64 @atomicrmw_nand_i64_monotonic(i64* %a, i64 %b) {
 ; RV32I-LABEL: atomicrmw_nand_i64_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    mv a3, zero
 ; RV32I-NEXT:    call __atomic_fetch_nand_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_nand_i64_monotonic:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    mv a3, zero
 ; RV32IA-NEXT:    call __atomic_fetch_nand_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_nand_i64_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a2, zero
+; RV64I-NEXT:    call __atomic_fetch_nand_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_nand_i64_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:  .LBB185_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.d a2, (a0)
+; RV64IA-NEXT:    and a3, a2, a1
+; RV64IA-NEXT:    not a3, a3
+; RV64IA-NEXT:    sc.d a3, a3, (a0)
+; RV64IA-NEXT:    bnez a3, .LBB185_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    mv a0, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw nand i64* %a, i64 %b monotonic
   ret i64 %1
 }
 
 define i64 @atomicrmw_nand_i64_acquire(i64* %a, i64 %b) {
 ; RV32I-LABEL: atomicrmw_nand_i64_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a3, zero, 2
 ; RV32I-NEXT:    call __atomic_fetch_nand_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_nand_i64_acquire:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    addi a3, zero, 2
 ; RV32IA-NEXT:    call __atomic_fetch_nand_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_nand_i64_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 2
+; RV64I-NEXT:    call __atomic_fetch_nand_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_nand_i64_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:  .LBB186_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.d.aq a2, (a0)
+; RV64IA-NEXT:    and a3, a2, a1
+; RV64IA-NEXT:    not a3, a3
+; RV64IA-NEXT:    sc.d a3, a3, (a0)
+; RV64IA-NEXT:    bnez a3, .LBB186_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    mv a0, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw nand i64* %a, i64 %b acquire
   ret i64 %1
 }
 
 define i64 @atomicrmw_nand_i64_release(i64* %a, i64 %b) {
 ; RV32I-LABEL: atomicrmw_nand_i64_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a3, zero, 3
 ; RV32I-NEXT:    call __atomic_fetch_nand_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_nand_i64_release:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    addi a3, zero, 3
 ; RV32IA-NEXT:    call __atomic_fetch_nand_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_nand_i64_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 3
+; RV64I-NEXT:    call __atomic_fetch_nand_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_nand_i64_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:  .LBB187_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.d a2, (a0)
+; RV64IA-NEXT:    and a3, a2, a1
+; RV64IA-NEXT:    not a3, a3
+; RV64IA-NEXT:    sc.d.rl a3, a3, (a0)
+; RV64IA-NEXT:    bnez a3, .LBB187_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    mv a0, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw nand i64* %a, i64 %b release
   ret i64 %1
 }
 
 define i64 @atomicrmw_nand_i64_acq_rel(i64* %a, i64 %b) {
 ; RV32I-LABEL: atomicrmw_nand_i64_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a3, zero, 4
 ; RV32I-NEXT:    call __atomic_fetch_nand_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_nand_i64_acq_rel:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    addi a3, zero, 4
 ; RV32IA-NEXT:    call __atomic_fetch_nand_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_nand_i64_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 4
+; RV64I-NEXT:    call __atomic_fetch_nand_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_nand_i64_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:  .LBB188_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.d.aq a2, (a0)
+; RV64IA-NEXT:    and a3, a2, a1
+; RV64IA-NEXT:    not a3, a3
+; RV64IA-NEXT:    sc.d.rl a3, a3, (a0)
+; RV64IA-NEXT:    bnez a3, .LBB188_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    mv a0, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw nand i64* %a, i64 %b acq_rel
   ret i64 %1
 }
 
 define i64 @atomicrmw_nand_i64_seq_cst(i64* %a, i64 %b) {
 ; RV32I-LABEL: atomicrmw_nand_i64_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a3, zero, 5
 ; RV32I-NEXT:    call __atomic_fetch_nand_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_nand_i64_seq_cst:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    addi a3, zero, 5
 ; RV32IA-NEXT:    call __atomic_fetch_nand_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_nand_i64_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 5
+; RV64I-NEXT:    call __atomic_fetch_nand_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_nand_i64_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:  .LBB189_1: # =>This Inner Loop Header: Depth=1
+; RV64IA-NEXT:    lr.d.aqrl a2, (a0)
+; RV64IA-NEXT:    and a3, a2, a1
+; RV64IA-NEXT:    not a3, a3
+; RV64IA-NEXT:    sc.d.aqrl a3, a3, (a0)
+; RV64IA-NEXT:    bnez a3, .LBB189_1
+; RV64IA-NEXT:  # %bb.2:
+; RV64IA-NEXT:    mv a0, a2
+; RV64IA-NEXT:    ret
   %1 = atomicrmw nand i64* %a, i64 %b seq_cst
   ret i64 %1
 }
 
 define i64 @atomicrmw_or_i64_monotonic(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_or_i64_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    mv a3, zero
 ; RV32I-NEXT:    call __atomic_fetch_or_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_or_i64_monotonic:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    mv a3, zero
 ; RV32IA-NEXT:    call __atomic_fetch_or_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_or_i64_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a2, zero
+; RV64I-NEXT:    call __atomic_fetch_or_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_or_i64_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoor.d a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw or i64* %a, i64 %b monotonic
   ret i64 %1
 }
 
 define i64 @atomicrmw_or_i64_acquire(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_or_i64_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a3, zero, 2
 ; RV32I-NEXT:    call __atomic_fetch_or_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_or_i64_acquire:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    addi a3, zero, 2
 ; RV32IA-NEXT:    call __atomic_fetch_or_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_or_i64_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 2
+; RV64I-NEXT:    call __atomic_fetch_or_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_or_i64_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoor.d.aq a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw or i64* %a, i64 %b acquire
   ret i64 %1
 }
 
 define i64 @atomicrmw_or_i64_release(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_or_i64_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a3, zero, 3
 ; RV32I-NEXT:    call __atomic_fetch_or_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_or_i64_release:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    addi a3, zero, 3
 ; RV32IA-NEXT:    call __atomic_fetch_or_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_or_i64_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 3
+; RV64I-NEXT:    call __atomic_fetch_or_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_or_i64_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoor.d.rl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw or i64* %a, i64 %b release
   ret i64 %1
 }
 
 define i64 @atomicrmw_or_i64_acq_rel(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_or_i64_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a3, zero, 4
 ; RV32I-NEXT:    call __atomic_fetch_or_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_or_i64_acq_rel:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    addi a3, zero, 4
 ; RV32IA-NEXT:    call __atomic_fetch_or_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_or_i64_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 4
+; RV64I-NEXT:    call __atomic_fetch_or_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_or_i64_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoor.d.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw or i64* %a, i64 %b acq_rel
   ret i64 %1
 }
 
 define i64 @atomicrmw_or_i64_seq_cst(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_or_i64_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a3, zero, 5
 ; RV32I-NEXT:    call __atomic_fetch_or_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_or_i64_seq_cst:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    addi a3, zero, 5
 ; RV32IA-NEXT:    call __atomic_fetch_or_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_or_i64_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 5
+; RV64I-NEXT:    call __atomic_fetch_or_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_or_i64_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoor.d.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw or i64* %a, i64 %b seq_cst
   ret i64 %1
 }
 
 define i64 @atomicrmw_xor_i64_monotonic(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_xor_i64_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    mv a3, zero
 ; RV32I-NEXT:    call __atomic_fetch_xor_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_xor_i64_monotonic:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    mv a3, zero
 ; RV32IA-NEXT:    call __atomic_fetch_xor_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_xor_i64_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    mv a2, zero
+; RV64I-NEXT:    call __atomic_fetch_xor_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_xor_i64_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoxor.d a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw xor i64* %a, i64 %b monotonic
   ret i64 %1
 }
 
 define i64 @atomicrmw_xor_i64_acquire(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_xor_i64_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a3, zero, 2
 ; RV32I-NEXT:    call __atomic_fetch_xor_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_xor_i64_acquire:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    addi a3, zero, 2
 ; RV32IA-NEXT:    call __atomic_fetch_xor_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_xor_i64_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 2
+; RV64I-NEXT:    call __atomic_fetch_xor_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_xor_i64_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoxor.d.aq a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw xor i64* %a, i64 %b acquire
   ret i64 %1
 }
 
 define i64 @atomicrmw_xor_i64_release(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_xor_i64_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a3, zero, 3
 ; RV32I-NEXT:    call __atomic_fetch_xor_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_xor_i64_release:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    addi a3, zero, 3
 ; RV32IA-NEXT:    call __atomic_fetch_xor_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_xor_i64_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 3
+; RV64I-NEXT:    call __atomic_fetch_xor_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_xor_i64_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoxor.d.rl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw xor i64* %a, i64 %b release
   ret i64 %1
 }
 
 define i64 @atomicrmw_xor_i64_acq_rel(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_xor_i64_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a3, zero, 4
 ; RV32I-NEXT:    call __atomic_fetch_xor_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_xor_i64_acq_rel:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    addi a3, zero, 4
 ; RV32IA-NEXT:    call __atomic_fetch_xor_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_xor_i64_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 4
+; RV64I-NEXT:    call __atomic_fetch_xor_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_xor_i64_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoxor.d.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw xor i64* %a, i64 %b acq_rel
   ret i64 %1
 }
 
 define i64 @atomicrmw_xor_i64_seq_cst(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_xor_i64_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -16
 ; RV32I-NEXT:    sw ra, 12(sp)
 ; RV32I-NEXT:    addi a3, zero, 5
 ; RV32I-NEXT:    call __atomic_fetch_xor_8
 ; RV32I-NEXT:    lw ra, 12(sp)
 ; RV32I-NEXT:    addi sp, sp, 16
 ; RV32I-NEXT:    ret
 ;
 ; RV32IA-LABEL: atomicrmw_xor_i64_seq_cst:
 ; RV32IA:       # %bb.0:
 ; RV32IA-NEXT:    addi sp, sp, -16
 ; RV32IA-NEXT:    sw ra, 12(sp)
 ; RV32IA-NEXT:    addi a3, zero, 5
 ; RV32IA-NEXT:    call __atomic_fetch_xor_8
 ; RV32IA-NEXT:    lw ra, 12(sp)
 ; RV32IA-NEXT:    addi sp, sp, 16
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_xor_i64_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp)
+; RV64I-NEXT:    addi a2, zero, 5
+; RV64I-NEXT:    call __atomic_fetch_xor_8
+; RV64I-NEXT:    ld ra, 8(sp)
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_xor_i64_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amoxor.d.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw xor i64* %a, i64 %b seq_cst
   ret i64 %1
 }
 
 define i64 @atomicrmw_max_i64_monotonic(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_max_i64_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    mv a0, a2
 ; RV32IA-NEXT:    lw s4, 12(sp)
 ; RV32IA-NEXT:    lw s3, 16(sp)
 ; RV32IA-NEXT:    lw s2, 20(sp)
 ; RV32IA-NEXT:    lw s1, 24(sp)
 ; RV32IA-NEXT:    lw ra, 28(sp)
 ; RV32IA-NEXT:    addi sp, sp, 32
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_max_i64_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -48
+; RV64I-NEXT:    sd ra, 40(sp)
+; RV64I-NEXT:    sd s1, 32(sp)
+; RV64I-NEXT:    sd s2, 24(sp)
+; RV64I-NEXT:    sd s3, 16(sp)
+; RV64I-NEXT:    mv s1, a1
+; RV64I-NEXT:    mv s2, a0
+; RV64I-NEXT:    ld a2, 0(a0)
+; RV64I-NEXT:    addi s3, sp, 8
+; RV64I-NEXT:  .LBB200_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    sd a2, 8(sp)
+; RV64I-NEXT:    blt s1, a2, .LBB200_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB200_1 Depth=1
+; RV64I-NEXT:    mv a2, s1
+; RV64I-NEXT:  .LBB200_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB200_1 Depth=1
+; RV64I-NEXT:    mv a0, s2
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, zero
+; RV64I-NEXT:    mv a4, zero
+; RV64I-NEXT:    call __atomic_compare_exchange_8
+; RV64I-NEXT:    ld a2, 8(sp)
+; RV64I-NEXT:    beqz a0, .LBB200_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    mv a0, a2
+; RV64I-NEXT:    ld s3, 16(sp)
+; RV64I-NEXT:    ld s2, 24(sp)
+; RV64I-NEXT:    ld s1, 32(sp)
+; RV64I-NEXT:    ld ra, 40(sp)
+; RV64I-NEXT:    addi sp, sp, 48
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_max_i64_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amomax.d a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw max i64* %a, i64 %b monotonic
   ret i64 %1
 }
 
 define i64 @atomicrmw_max_i64_acquire(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_max_i64_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    lw s5, 8(sp)
 ; RV32IA-NEXT:    lw s4, 12(sp)
 ; RV32IA-NEXT:    lw s3, 16(sp)
 ; RV32IA-NEXT:    lw s2, 20(sp)
 ; RV32IA-NEXT:    lw s1, 24(sp)
 ; RV32IA-NEXT:    lw ra, 28(sp)
 ; RV32IA-NEXT:    addi sp, sp, 32
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_max_i64_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -48
+; RV64I-NEXT:    sd ra, 40(sp)
+; RV64I-NEXT:    sd s1, 32(sp)
+; RV64I-NEXT:    sd s2, 24(sp)
+; RV64I-NEXT:    sd s3, 16(sp)
+; RV64I-NEXT:    sd s4, 8(sp)
+; RV64I-NEXT:    mv s1, a1
+; RV64I-NEXT:    mv s2, a0
+; RV64I-NEXT:    ld a2, 0(a0)
+; RV64I-NEXT:    mv s3, sp
+; RV64I-NEXT:    addi s4, zero, 2
+; RV64I-NEXT:  .LBB201_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    sd a2, 0(sp)
+; RV64I-NEXT:    blt s1, a2, .LBB201_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB201_1 Depth=1
+; RV64I-NEXT:    mv a2, s1
+; RV64I-NEXT:  .LBB201_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB201_1 Depth=1
+; RV64I-NEXT:    mv a0, s2
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s4
+; RV64I-NEXT:    mv a4, s4
+; RV64I-NEXT:    call __atomic_compare_exchange_8
+; RV64I-NEXT:    ld a2, 0(sp)
+; RV64I-NEXT:    beqz a0, .LBB201_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    mv a0, a2
+; RV64I-NEXT:    ld s4, 8(sp)
+; RV64I-NEXT:    ld s3, 16(sp)
+; RV64I-NEXT:    ld s2, 24(sp)
+; RV64I-NEXT:    ld s1, 32(sp)
+; RV64I-NEXT:    ld ra, 40(sp)
+; RV64I-NEXT:    addi sp, sp, 48
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_max_i64_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amomax.d.aq a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw max i64* %a, i64 %b acquire
   ret i64 %1
 }
 
 define i64 @atomicrmw_max_i64_release(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_max_i64_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    lw s5, 8(sp)
 ; RV32IA-NEXT:    lw s4, 12(sp)
 ; RV32IA-NEXT:    lw s3, 16(sp)
 ; RV32IA-NEXT:    lw s2, 20(sp)
 ; RV32IA-NEXT:    lw s1, 24(sp)
 ; RV32IA-NEXT:    lw ra, 28(sp)
 ; RV32IA-NEXT:    addi sp, sp, 32
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_max_i64_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -48
+; RV64I-NEXT:    sd ra, 40(sp)
+; RV64I-NEXT:    sd s1, 32(sp)
+; RV64I-NEXT:    sd s2, 24(sp)
+; RV64I-NEXT:    sd s3, 16(sp)
+; RV64I-NEXT:    sd s4, 8(sp)
+; RV64I-NEXT:    mv s1, a1
+; RV64I-NEXT:    mv s2, a0
+; RV64I-NEXT:    ld a2, 0(a0)
+; RV64I-NEXT:    mv s3, sp
+; RV64I-NEXT:    addi s4, zero, 3
+; RV64I-NEXT:  .LBB202_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    sd a2, 0(sp)
+; RV64I-NEXT:    blt s1, a2, .LBB202_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB202_1 Depth=1
+; RV64I-NEXT:    mv a2, s1
+; RV64I-NEXT:  .LBB202_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB202_1 Depth=1
+; RV64I-NEXT:    mv a0, s2
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s4
+; RV64I-NEXT:    mv a4, zero
+; RV64I-NEXT:    call __atomic_compare_exchange_8
+; RV64I-NEXT:    ld a2, 0(sp)
+; RV64I-NEXT:    beqz a0, .LBB202_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    mv a0, a2
+; RV64I-NEXT:    ld s4, 8(sp)
+; RV64I-NEXT:    ld s3, 16(sp)
+; RV64I-NEXT:    ld s2, 24(sp)
+; RV64I-NEXT:    ld s1, 32(sp)
+; RV64I-NEXT:    ld ra, 40(sp)
+; RV64I-NEXT:    addi sp, sp, 48
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_max_i64_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amomax.d.rl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw max i64* %a, i64 %b release
   ret i64 %1
 }
 
 define i64 @atomicrmw_max_i64_acq_rel(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_max_i64_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -48

 ; RV32IA-NEXT:    lw s5, 24(sp)
 ; RV32IA-NEXT:    lw s4, 28(sp)
 ; RV32IA-NEXT:    lw s3, 32(sp)
 ; RV32IA-NEXT:    lw s2, 36(sp)
 ; RV32IA-NEXT:    lw s1, 40(sp)
 ; RV32IA-NEXT:    lw ra, 44(sp)
 ; RV32IA-NEXT:    addi sp, sp, 48
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_max_i64_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    mv s1, a1
+; RV64I-NEXT:    mv s2, a0
+; RV64I-NEXT:    ld a2, 0(a0)
+; RV64I-NEXT:    addi s3, sp, 8
+; RV64I-NEXT:    addi s4, zero, 4
+; RV64I-NEXT:    addi s5, zero, 2
+; RV64I-NEXT:  .LBB203_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    sd a2, 8(sp)
+; RV64I-NEXT:    blt s1, a2, .LBB203_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB203_1 Depth=1
+; RV64I-NEXT:    mv a2, s1
+; RV64I-NEXT:  .LBB203_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB203_1 Depth=1
+; RV64I-NEXT:    mv a0, s2
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s4
+; RV64I-NEXT:    mv a4, s5
+; RV64I-NEXT:    call __atomic_compare_exchange_8
+; RV64I-NEXT:    ld a2, 8(sp)
+; RV64I-NEXT:    beqz a0, .LBB203_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    mv a0, a2
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_max_i64_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amomax.d.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw max i64* %a, i64 %b acq_rel
   ret i64 %1
 }
 
 define i64 @atomicrmw_max_i64_seq_cst(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_max_i64_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    lw s5, 8(sp)
 ; RV32IA-NEXT:    lw s4, 12(sp)
 ; RV32IA-NEXT:    lw s3, 16(sp)
 ; RV32IA-NEXT:    lw s2, 20(sp)
 ; RV32IA-NEXT:    lw s1, 24(sp)
 ; RV32IA-NEXT:    lw ra, 28(sp)
 ; RV32IA-NEXT:    addi sp, sp, 32
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_max_i64_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -48
+; RV64I-NEXT:    sd ra, 40(sp)
+; RV64I-NEXT:    sd s1, 32(sp)
+; RV64I-NEXT:    sd s2, 24(sp)
+; RV64I-NEXT:    sd s3, 16(sp)
+; RV64I-NEXT:    sd s4, 8(sp)
+; RV64I-NEXT:    mv s1, a1
+; RV64I-NEXT:    mv s2, a0
+; RV64I-NEXT:    ld a2, 0(a0)
+; RV64I-NEXT:    mv s3, sp
+; RV64I-NEXT:    addi s4, zero, 5
+; RV64I-NEXT:  .LBB204_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    sd a2, 0(sp)
+; RV64I-NEXT:    blt s1, a2, .LBB204_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB204_1 Depth=1
+; RV64I-NEXT:    mv a2, s1
+; RV64I-NEXT:  .LBB204_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB204_1 Depth=1
+; RV64I-NEXT:    mv a0, s2
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s4
+; RV64I-NEXT:    mv a4, s4
+; RV64I-NEXT:    call __atomic_compare_exchange_8
+; RV64I-NEXT:    ld a2, 0(sp)
+; RV64I-NEXT:    beqz a0, .LBB204_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    mv a0, a2
+; RV64I-NEXT:    ld s4, 8(sp)
+; RV64I-NEXT:    ld s3, 16(sp)
+; RV64I-NEXT:    ld s2, 24(sp)
+; RV64I-NEXT:    ld s1, 32(sp)
+; RV64I-NEXT:    ld ra, 40(sp)
+; RV64I-NEXT:    addi sp, sp, 48
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_max_i64_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amomax.d.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw max i64* %a, i64 %b seq_cst
   ret i64 %1
 }
 
 define i64 @atomicrmw_min_i64_monotonic(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_min_i64_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    mv a0, a2
 ; RV32IA-NEXT:    lw s4, 12(sp)
 ; RV32IA-NEXT:    lw s3, 16(sp)
 ; RV32IA-NEXT:    lw s2, 20(sp)
 ; RV32IA-NEXT:    lw s1, 24(sp)
 ; RV32IA-NEXT:    lw ra, 28(sp)
 ; RV32IA-NEXT:    addi sp, sp, 32
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_min_i64_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -48
+; RV64I-NEXT:    sd ra, 40(sp)
+; RV64I-NEXT:    sd s1, 32(sp)
+; RV64I-NEXT:    sd s2, 24(sp)
+; RV64I-NEXT:    sd s3, 16(sp)
+; RV64I-NEXT:    mv s1, a1
+; RV64I-NEXT:    mv s2, a0
+; RV64I-NEXT:    ld a2, 0(a0)
+; RV64I-NEXT:    addi s3, sp, 8
+; RV64I-NEXT:  .LBB205_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    sd a2, 8(sp)
+; RV64I-NEXT:    bge s1, a2, .LBB205_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB205_1 Depth=1
+; RV64I-NEXT:    mv a2, s1
+; RV64I-NEXT:  .LBB205_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB205_1 Depth=1
+; RV64I-NEXT:    mv a0, s2
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, zero
+; RV64I-NEXT:    mv a4, zero
+; RV64I-NEXT:    call __atomic_compare_exchange_8
+; RV64I-NEXT:    ld a2, 8(sp)
+; RV64I-NEXT:    beqz a0, .LBB205_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    mv a0, a2
+; RV64I-NEXT:    ld s3, 16(sp)
+; RV64I-NEXT:    ld s2, 24(sp)
+; RV64I-NEXT:    ld s1, 32(sp)
+; RV64I-NEXT:    ld ra, 40(sp)
+; RV64I-NEXT:    addi sp, sp, 48
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_min_i64_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amomin.d a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw min i64* %a, i64 %b monotonic
   ret i64 %1
 }
 
 define i64 @atomicrmw_min_i64_acquire(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_min_i64_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    lw s5, 8(sp)
 ; RV32IA-NEXT:    lw s4, 12(sp)
 ; RV32IA-NEXT:    lw s3, 16(sp)
 ; RV32IA-NEXT:    lw s2, 20(sp)
 ; RV32IA-NEXT:    lw s1, 24(sp)
 ; RV32IA-NEXT:    lw ra, 28(sp)
 ; RV32IA-NEXT:    addi sp, sp, 32
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_min_i64_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -48
+; RV64I-NEXT:    sd ra, 40(sp)
+; RV64I-NEXT:    sd s1, 32(sp)
+; RV64I-NEXT:    sd s2, 24(sp)
+; RV64I-NEXT:    sd s3, 16(sp)
+; RV64I-NEXT:    sd s4, 8(sp)
+; RV64I-NEXT:    mv s1, a1
+; RV64I-NEXT:    mv s2, a0
+; RV64I-NEXT:    ld a2, 0(a0)
+; RV64I-NEXT:    mv s3, sp
+; RV64I-NEXT:    addi s4, zero, 2
+; RV64I-NEXT:  .LBB206_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    sd a2, 0(sp)
+; RV64I-NEXT:    bge s1, a2, .LBB206_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB206_1 Depth=1
+; RV64I-NEXT:    mv a2, s1
+; RV64I-NEXT:  .LBB206_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB206_1 Depth=1
+; RV64I-NEXT:    mv a0, s2
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s4
+; RV64I-NEXT:    mv a4, s4
+; RV64I-NEXT:    call __atomic_compare_exchange_8
+; RV64I-NEXT:    ld a2, 0(sp)
+; RV64I-NEXT:    beqz a0, .LBB206_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    mv a0, a2
+; RV64I-NEXT:    ld s4, 8(sp)
+; RV64I-NEXT:    ld s3, 16(sp)
+; RV64I-NEXT:    ld s2, 24(sp)
+; RV64I-NEXT:    ld s1, 32(sp)
+; RV64I-NEXT:    ld ra, 40(sp)
+; RV64I-NEXT:    addi sp, sp, 48
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_min_i64_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amomin.d.aq a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw min i64* %a, i64 %b acquire
   ret i64 %1
 }
 
 define i64 @atomicrmw_min_i64_release(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_min_i64_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    lw s5, 8(sp)
 ; RV32IA-NEXT:    lw s4, 12(sp)
 ; RV32IA-NEXT:    lw s3, 16(sp)
 ; RV32IA-NEXT:    lw s2, 20(sp)
 ; RV32IA-NEXT:    lw s1, 24(sp)
 ; RV32IA-NEXT:    lw ra, 28(sp)
 ; RV32IA-NEXT:    addi sp, sp, 32
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_min_i64_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -48
+; RV64I-NEXT:    sd ra, 40(sp)
+; RV64I-NEXT:    sd s1, 32(sp)
+; RV64I-NEXT:    sd s2, 24(sp)
+; RV64I-NEXT:    sd s3, 16(sp)
+; RV64I-NEXT:    sd s4, 8(sp)
+; RV64I-NEXT:    mv s1, a1
+; RV64I-NEXT:    mv s2, a0
+; RV64I-NEXT:    ld a2, 0(a0)
+; RV64I-NEXT:    mv s3, sp
+; RV64I-NEXT:    addi s4, zero, 3
+; RV64I-NEXT:  .LBB207_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    sd a2, 0(sp)
+; RV64I-NEXT:    bge s1, a2, .LBB207_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB207_1 Depth=1
+; RV64I-NEXT:    mv a2, s1
+; RV64I-NEXT:  .LBB207_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB207_1 Depth=1
+; RV64I-NEXT:    mv a0, s2
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s4
+; RV64I-NEXT:    mv a4, zero
+; RV64I-NEXT:    call __atomic_compare_exchange_8
+; RV64I-NEXT:    ld a2, 0(sp)
+; RV64I-NEXT:    beqz a0, .LBB207_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    mv a0, a2
+; RV64I-NEXT:    ld s4, 8(sp)
+; RV64I-NEXT:    ld s3, 16(sp)
+; RV64I-NEXT:    ld s2, 24(sp)
+; RV64I-NEXT:    ld s1, 32(sp)
+; RV64I-NEXT:    ld ra, 40(sp)
+; RV64I-NEXT:    addi sp, sp, 48
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_min_i64_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amomin.d.rl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw min i64* %a, i64 %b release
   ret i64 %1
 }
 
 define i64 @atomicrmw_min_i64_acq_rel(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_min_i64_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -48

 ; RV32IA-NEXT:    lw s5, 24(sp)
 ; RV32IA-NEXT:    lw s4, 28(sp)
 ; RV32IA-NEXT:    lw s3, 32(sp)
 ; RV32IA-NEXT:    lw s2, 36(sp)
 ; RV32IA-NEXT:    lw s1, 40(sp)
 ; RV32IA-NEXT:    lw ra, 44(sp)
 ; RV32IA-NEXT:    addi sp, sp, 48
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_min_i64_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    mv s1, a1
+; RV64I-NEXT:    mv s2, a0
+; RV64I-NEXT:    ld a2, 0(a0)
+; RV64I-NEXT:    addi s3, sp, 8
+; RV64I-NEXT:    addi s4, zero, 4
+; RV64I-NEXT:    addi s5, zero, 2
+; RV64I-NEXT:  .LBB208_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    sd a2, 8(sp)
+; RV64I-NEXT:    bge s1, a2, .LBB208_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB208_1 Depth=1
+; RV64I-NEXT:    mv a2, s1
+; RV64I-NEXT:  .LBB208_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB208_1 Depth=1
+; RV64I-NEXT:    mv a0, s2
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s4
+; RV64I-NEXT:    mv a4, s5
+; RV64I-NEXT:    call __atomic_compare_exchange_8
+; RV64I-NEXT:    ld a2, 8(sp)
+; RV64I-NEXT:    beqz a0, .LBB208_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    mv a0, a2
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_min_i64_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amomin.d.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw min i64* %a, i64 %b acq_rel
   ret i64 %1
 }
 
 define i64 @atomicrmw_min_i64_seq_cst(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_min_i64_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    lw s5, 8(sp)
 ; RV32IA-NEXT:    lw s4, 12(sp)
 ; RV32IA-NEXT:    lw s3, 16(sp)
 ; RV32IA-NEXT:    lw s2, 20(sp)
 ; RV32IA-NEXT:    lw s1, 24(sp)
 ; RV32IA-NEXT:    lw ra, 28(sp)
 ; RV32IA-NEXT:    addi sp, sp, 32
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_min_i64_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -48
+; RV64I-NEXT:    sd ra, 40(sp)
+; RV64I-NEXT:    sd s1, 32(sp)
+; RV64I-NEXT:    sd s2, 24(sp)
+; RV64I-NEXT:    sd s3, 16(sp)
+; RV64I-NEXT:    sd s4, 8(sp)
+; RV64I-NEXT:    mv s1, a1
+; RV64I-NEXT:    mv s2, a0
+; RV64I-NEXT:    ld a2, 0(a0)
+; RV64I-NEXT:    mv s3, sp
+; RV64I-NEXT:    addi s4, zero, 5
+; RV64I-NEXT:  .LBB209_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    sd a2, 0(sp)
+; RV64I-NEXT:    bge s1, a2, .LBB209_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB209_1 Depth=1
+; RV64I-NEXT:    mv a2, s1
+; RV64I-NEXT:  .LBB209_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB209_1 Depth=1
+; RV64I-NEXT:    mv a0, s2
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s4
+; RV64I-NEXT:    mv a4, s4
+; RV64I-NEXT:    call __atomic_compare_exchange_8
+; RV64I-NEXT:    ld a2, 0(sp)
+; RV64I-NEXT:    beqz a0, .LBB209_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    mv a0, a2
+; RV64I-NEXT:    ld s4, 8(sp)
+; RV64I-NEXT:    ld s3, 16(sp)
+; RV64I-NEXT:    ld s2, 24(sp)
+; RV64I-NEXT:    ld s1, 32(sp)
+; RV64I-NEXT:    ld ra, 40(sp)
+; RV64I-NEXT:    addi sp, sp, 48
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_min_i64_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amomin.d.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw min i64* %a, i64 %b seq_cst
   ret i64 %1
 }
 
 define i64 @atomicrmw_umax_i64_monotonic(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_umax_i64_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    mv a0, a2
 ; RV32IA-NEXT:    lw s4, 12(sp)
 ; RV32IA-NEXT:    lw s3, 16(sp)
 ; RV32IA-NEXT:    lw s2, 20(sp)
 ; RV32IA-NEXT:    lw s1, 24(sp)
 ; RV32IA-NEXT:    lw ra, 28(sp)
 ; RV32IA-NEXT:    addi sp, sp, 32
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_umax_i64_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -48
+; RV64I-NEXT:    sd ra, 40(sp)
+; RV64I-NEXT:    sd s1, 32(sp)
+; RV64I-NEXT:    sd s2, 24(sp)
+; RV64I-NEXT:    sd s3, 16(sp)
+; RV64I-NEXT:    mv s1, a1
+; RV64I-NEXT:    mv s2, a0
+; RV64I-NEXT:    ld a2, 0(a0)
+; RV64I-NEXT:    addi s3, sp, 8
+; RV64I-NEXT:  .LBB210_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    sd a2, 8(sp)
+; RV64I-NEXT:    bltu s1, a2, .LBB210_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB210_1 Depth=1
+; RV64I-NEXT:    mv a2, s1
+; RV64I-NEXT:  .LBB210_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB210_1 Depth=1
+; RV64I-NEXT:    mv a0, s2
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, zero
+; RV64I-NEXT:    mv a4, zero
+; RV64I-NEXT:    call __atomic_compare_exchange_8
+; RV64I-NEXT:    ld a2, 8(sp)
+; RV64I-NEXT:    beqz a0, .LBB210_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    mv a0, a2
+; RV64I-NEXT:    ld s3, 16(sp)
+; RV64I-NEXT:    ld s2, 24(sp)
+; RV64I-NEXT:    ld s1, 32(sp)
+; RV64I-NEXT:    ld ra, 40(sp)
+; RV64I-NEXT:    addi sp, sp, 48
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_umax_i64_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amomaxu.d a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw umax i64* %a, i64 %b monotonic
   ret i64 %1
 }
 
 define i64 @atomicrmw_umax_i64_acquire(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_umax_i64_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    lw s5, 8(sp)
 ; RV32IA-NEXT:    lw s4, 12(sp)
 ; RV32IA-NEXT:    lw s3, 16(sp)
 ; RV32IA-NEXT:    lw s2, 20(sp)
 ; RV32IA-NEXT:    lw s1, 24(sp)
 ; RV32IA-NEXT:    lw ra, 28(sp)
 ; RV32IA-NEXT:    addi sp, sp, 32
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_umax_i64_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -48
+; RV64I-NEXT:    sd ra, 40(sp)
+; RV64I-NEXT:    sd s1, 32(sp)
+; RV64I-NEXT:    sd s2, 24(sp)
+; RV64I-NEXT:    sd s3, 16(sp)
+; RV64I-NEXT:    sd s4, 8(sp)
+; RV64I-NEXT:    mv s1, a1
+; RV64I-NEXT:    mv s2, a0
+; RV64I-NEXT:    ld a2, 0(a0)
+; RV64I-NEXT:    mv s3, sp
+; RV64I-NEXT:    addi s4, zero, 2
+; RV64I-NEXT:  .LBB211_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    sd a2, 0(sp)
+; RV64I-NEXT:    bltu s1, a2, .LBB211_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB211_1 Depth=1
+; RV64I-NEXT:    mv a2, s1
+; RV64I-NEXT:  .LBB211_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB211_1 Depth=1
+; RV64I-NEXT:    mv a0, s2
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s4
+; RV64I-NEXT:    mv a4, s4
+; RV64I-NEXT:    call __atomic_compare_exchange_8
+; RV64I-NEXT:    ld a2, 0(sp)
+; RV64I-NEXT:    beqz a0, .LBB211_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    mv a0, a2
+; RV64I-NEXT:    ld s4, 8(sp)
+; RV64I-NEXT:    ld s3, 16(sp)
+; RV64I-NEXT:    ld s2, 24(sp)
+; RV64I-NEXT:    ld s1, 32(sp)
+; RV64I-NEXT:    ld ra, 40(sp)
+; RV64I-NEXT:    addi sp, sp, 48
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_umax_i64_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amomaxu.d.aq a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw umax i64* %a, i64 %b acquire
   ret i64 %1
 }
 
 define i64 @atomicrmw_umax_i64_release(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_umax_i64_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    lw s5, 8(sp)
 ; RV32IA-NEXT:    lw s4, 12(sp)
 ; RV32IA-NEXT:    lw s3, 16(sp)
 ; RV32IA-NEXT:    lw s2, 20(sp)
 ; RV32IA-NEXT:    lw s1, 24(sp)
 ; RV32IA-NEXT:    lw ra, 28(sp)
 ; RV32IA-NEXT:    addi sp, sp, 32
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_umax_i64_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -48
+; RV64I-NEXT:    sd ra, 40(sp)
+; RV64I-NEXT:    sd s1, 32(sp)
+; RV64I-NEXT:    sd s2, 24(sp)
+; RV64I-NEXT:    sd s3, 16(sp)
+; RV64I-NEXT:    sd s4, 8(sp)
+; RV64I-NEXT:    mv s1, a1
+; RV64I-NEXT:    mv s2, a0
+; RV64I-NEXT:    ld a2, 0(a0)
+; RV64I-NEXT:    mv s3, sp
+; RV64I-NEXT:    addi s4, zero, 3
+; RV64I-NEXT:  .LBB212_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    sd a2, 0(sp)
+; RV64I-NEXT:    bltu s1, a2, .LBB212_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB212_1 Depth=1
+; RV64I-NEXT:    mv a2, s1
+; RV64I-NEXT:  .LBB212_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB212_1 Depth=1
+; RV64I-NEXT:    mv a0, s2
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s4
+; RV64I-NEXT:    mv a4, zero
+; RV64I-NEXT:    call __atomic_compare_exchange_8
+; RV64I-NEXT:    ld a2, 0(sp)
+; RV64I-NEXT:    beqz a0, .LBB212_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    mv a0, a2
+; RV64I-NEXT:    ld s4, 8(sp)
+; RV64I-NEXT:    ld s3, 16(sp)
+; RV64I-NEXT:    ld s2, 24(sp)
+; RV64I-NEXT:    ld s1, 32(sp)
+; RV64I-NEXT:    ld ra, 40(sp)
+; RV64I-NEXT:    addi sp, sp, 48
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_umax_i64_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amomaxu.d.rl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw umax i64* %a, i64 %b release
   ret i64 %1
 }
 
 define i64 @atomicrmw_umax_i64_acq_rel(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_umax_i64_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -48

 ; RV32IA-NEXT:    lw s5, 24(sp)
 ; RV32IA-NEXT:    lw s4, 28(sp)
 ; RV32IA-NEXT:    lw s3, 32(sp)
 ; RV32IA-NEXT:    lw s2, 36(sp)
 ; RV32IA-NEXT:    lw s1, 40(sp)
 ; RV32IA-NEXT:    lw ra, 44(sp)
 ; RV32IA-NEXT:    addi sp, sp, 48
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_umax_i64_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    mv s1, a1
+; RV64I-NEXT:    mv s2, a0
+; RV64I-NEXT:    ld a2, 0(a0)
+; RV64I-NEXT:    addi s3, sp, 8
+; RV64I-NEXT:    addi s4, zero, 4
+; RV64I-NEXT:    addi s5, zero, 2
+; RV64I-NEXT:  .LBB213_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    sd a2, 8(sp)
+; RV64I-NEXT:    bltu s1, a2, .LBB213_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB213_1 Depth=1
+; RV64I-NEXT:    mv a2, s1
+; RV64I-NEXT:  .LBB213_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB213_1 Depth=1
+; RV64I-NEXT:    mv a0, s2
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s4
+; RV64I-NEXT:    mv a4, s5
+; RV64I-NEXT:    call __atomic_compare_exchange_8
+; RV64I-NEXT:    ld a2, 8(sp)
+; RV64I-NEXT:    beqz a0, .LBB213_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    mv a0, a2
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_umax_i64_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amomaxu.d.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw umax i64* %a, i64 %b acq_rel
   ret i64 %1
 }
 
 define i64 @atomicrmw_umax_i64_seq_cst(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_umax_i64_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    lw s5, 8(sp)
 ; RV32IA-NEXT:    lw s4, 12(sp)
 ; RV32IA-NEXT:    lw s3, 16(sp)
 ; RV32IA-NEXT:    lw s2, 20(sp)
 ; RV32IA-NEXT:    lw s1, 24(sp)
 ; RV32IA-NEXT:    lw ra, 28(sp)
 ; RV32IA-NEXT:    addi sp, sp, 32
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_umax_i64_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -48
+; RV64I-NEXT:    sd ra, 40(sp)
+; RV64I-NEXT:    sd s1, 32(sp)
+; RV64I-NEXT:    sd s2, 24(sp)
+; RV64I-NEXT:    sd s3, 16(sp)
+; RV64I-NEXT:    sd s4, 8(sp)
+; RV64I-NEXT:    mv s1, a1
+; RV64I-NEXT:    mv s2, a0
+; RV64I-NEXT:    ld a2, 0(a0)
+; RV64I-NEXT:    mv s3, sp
+; RV64I-NEXT:    addi s4, zero, 5
+; RV64I-NEXT:  .LBB214_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    sd a2, 0(sp)
+; RV64I-NEXT:    bltu s1, a2, .LBB214_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB214_1 Depth=1
+; RV64I-NEXT:    mv a2, s1
+; RV64I-NEXT:  .LBB214_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB214_1 Depth=1
+; RV64I-NEXT:    mv a0, s2
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s4
+; RV64I-NEXT:    mv a4, s4
+; RV64I-NEXT:    call __atomic_compare_exchange_8
+; RV64I-NEXT:    ld a2, 0(sp)
+; RV64I-NEXT:    beqz a0, .LBB214_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    mv a0, a2
+; RV64I-NEXT:    ld s4, 8(sp)
+; RV64I-NEXT:    ld s3, 16(sp)
+; RV64I-NEXT:    ld s2, 24(sp)
+; RV64I-NEXT:    ld s1, 32(sp)
+; RV64I-NEXT:    ld ra, 40(sp)
+; RV64I-NEXT:    addi sp, sp, 48
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_umax_i64_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amomaxu.d.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw umax i64* %a, i64 %b seq_cst
   ret i64 %1
 }
 
 define i64 @atomicrmw_umin_i64_monotonic(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_umin_i64_monotonic:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    mv a0, a2
 ; RV32IA-NEXT:    lw s4, 12(sp)
 ; RV32IA-NEXT:    lw s3, 16(sp)
 ; RV32IA-NEXT:    lw s2, 20(sp)
 ; RV32IA-NEXT:    lw s1, 24(sp)
 ; RV32IA-NEXT:    lw ra, 28(sp)
 ; RV32IA-NEXT:    addi sp, sp, 32
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_umin_i64_monotonic:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -48
+; RV64I-NEXT:    sd ra, 40(sp)
+; RV64I-NEXT:    sd s1, 32(sp)
+; RV64I-NEXT:    sd s2, 24(sp)
+; RV64I-NEXT:    sd s3, 16(sp)
+; RV64I-NEXT:    mv s1, a1
+; RV64I-NEXT:    mv s2, a0
+; RV64I-NEXT:    ld a2, 0(a0)
+; RV64I-NEXT:    addi s3, sp, 8
+; RV64I-NEXT:  .LBB215_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    sd a2, 8(sp)
+; RV64I-NEXT:    bgeu s1, a2, .LBB215_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB215_1 Depth=1
+; RV64I-NEXT:    mv a2, s1
+; RV64I-NEXT:  .LBB215_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB215_1 Depth=1
+; RV64I-NEXT:    mv a0, s2
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, zero
+; RV64I-NEXT:    mv a4, zero
+; RV64I-NEXT:    call __atomic_compare_exchange_8
+; RV64I-NEXT:    ld a2, 8(sp)
+; RV64I-NEXT:    beqz a0, .LBB215_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    mv a0, a2
+; RV64I-NEXT:    ld s3, 16(sp)
+; RV64I-NEXT:    ld s2, 24(sp)
+; RV64I-NEXT:    ld s1, 32(sp)
+; RV64I-NEXT:    ld ra, 40(sp)
+; RV64I-NEXT:    addi sp, sp, 48
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_umin_i64_monotonic:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amominu.d a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw umin i64* %a, i64 %b monotonic
   ret i64 %1
 }
 
 define i64 @atomicrmw_umin_i64_acquire(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_umin_i64_acquire:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    lw s5, 8(sp)
 ; RV32IA-NEXT:    lw s4, 12(sp)
 ; RV32IA-NEXT:    lw s3, 16(sp)
 ; RV32IA-NEXT:    lw s2, 20(sp)
 ; RV32IA-NEXT:    lw s1, 24(sp)
 ; RV32IA-NEXT:    lw ra, 28(sp)
 ; RV32IA-NEXT:    addi sp, sp, 32
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_umin_i64_acquire:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -48
+; RV64I-NEXT:    sd ra, 40(sp)
+; RV64I-NEXT:    sd s1, 32(sp)
+; RV64I-NEXT:    sd s2, 24(sp)
+; RV64I-NEXT:    sd s3, 16(sp)
+; RV64I-NEXT:    sd s4, 8(sp)
+; RV64I-NEXT:    mv s1, a1
+; RV64I-NEXT:    mv s2, a0
+; RV64I-NEXT:    ld a2, 0(a0)
+; RV64I-NEXT:    mv s3, sp
+; RV64I-NEXT:    addi s4, zero, 2
+; RV64I-NEXT:  .LBB216_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    sd a2, 0(sp)
+; RV64I-NEXT:    bgeu s1, a2, .LBB216_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB216_1 Depth=1
+; RV64I-NEXT:    mv a2, s1
+; RV64I-NEXT:  .LBB216_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB216_1 Depth=1
+; RV64I-NEXT:    mv a0, s2
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s4
+; RV64I-NEXT:    mv a4, s4
+; RV64I-NEXT:    call __atomic_compare_exchange_8
+; RV64I-NEXT:    ld a2, 0(sp)
+; RV64I-NEXT:    beqz a0, .LBB216_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    mv a0, a2
+; RV64I-NEXT:    ld s4, 8(sp)
+; RV64I-NEXT:    ld s3, 16(sp)
+; RV64I-NEXT:    ld s2, 24(sp)
+; RV64I-NEXT:    ld s1, 32(sp)
+; RV64I-NEXT:    ld ra, 40(sp)
+; RV64I-NEXT:    addi sp, sp, 48
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_umin_i64_acquire:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amominu.d.aq a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw umin i64* %a, i64 %b acquire
   ret i64 %1
 }
 
 define i64 @atomicrmw_umin_i64_release(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_umin_i64_release:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    lw s5, 8(sp)
 ; RV32IA-NEXT:    lw s4, 12(sp)
 ; RV32IA-NEXT:    lw s3, 16(sp)
 ; RV32IA-NEXT:    lw s2, 20(sp)
 ; RV32IA-NEXT:    lw s1, 24(sp)
 ; RV32IA-NEXT:    lw ra, 28(sp)
 ; RV32IA-NEXT:    addi sp, sp, 32
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_umin_i64_release:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -48
+; RV64I-NEXT:    sd ra, 40(sp)
+; RV64I-NEXT:    sd s1, 32(sp)
+; RV64I-NEXT:    sd s2, 24(sp)
+; RV64I-NEXT:    sd s3, 16(sp)
+; RV64I-NEXT:    sd s4, 8(sp)
+; RV64I-NEXT:    mv s1, a1
+; RV64I-NEXT:    mv s2, a0
+; RV64I-NEXT:    ld a2, 0(a0)
+; RV64I-NEXT:    mv s3, sp
+; RV64I-NEXT:    addi s4, zero, 3
+; RV64I-NEXT:  .LBB217_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    sd a2, 0(sp)
+; RV64I-NEXT:    bgeu s1, a2, .LBB217_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB217_1 Depth=1
+; RV64I-NEXT:    mv a2, s1
+; RV64I-NEXT:  .LBB217_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB217_1 Depth=1
+; RV64I-NEXT:    mv a0, s2
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s4
+; RV64I-NEXT:    mv a4, zero
+; RV64I-NEXT:    call __atomic_compare_exchange_8
+; RV64I-NEXT:    ld a2, 0(sp)
+; RV64I-NEXT:    beqz a0, .LBB217_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    mv a0, a2
+; RV64I-NEXT:    ld s4, 8(sp)
+; RV64I-NEXT:    ld s3, 16(sp)
+; RV64I-NEXT:    ld s2, 24(sp)
+; RV64I-NEXT:    ld s1, 32(sp)
+; RV64I-NEXT:    ld ra, 40(sp)
+; RV64I-NEXT:    addi sp, sp, 48
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_umin_i64_release:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amominu.d.rl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw umin i64* %a, i64 %b release
   ret i64 %1
 }
 
 define i64 @atomicrmw_umin_i64_acq_rel(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_umin_i64_acq_rel:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -48

 ; RV32IA-NEXT:    lw s5, 24(sp)
 ; RV32IA-NEXT:    lw s4, 28(sp)
 ; RV32IA-NEXT:    lw s3, 32(sp)
 ; RV32IA-NEXT:    lw s2, 36(sp)
 ; RV32IA-NEXT:    lw s1, 40(sp)
 ; RV32IA-NEXT:    lw ra, 44(sp)
 ; RV32IA-NEXT:    addi sp, sp, 48
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_umin_i64_acq_rel:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -64
+; RV64I-NEXT:    sd ra, 56(sp)
+; RV64I-NEXT:    sd s1, 48(sp)
+; RV64I-NEXT:    sd s2, 40(sp)
+; RV64I-NEXT:    sd s3, 32(sp)
+; RV64I-NEXT:    sd s4, 24(sp)
+; RV64I-NEXT:    sd s5, 16(sp)
+; RV64I-NEXT:    mv s1, a1
+; RV64I-NEXT:    mv s2, a0
+; RV64I-NEXT:    ld a2, 0(a0)
+; RV64I-NEXT:    addi s3, sp, 8
+; RV64I-NEXT:    addi s4, zero, 4
+; RV64I-NEXT:    addi s5, zero, 2
+; RV64I-NEXT:  .LBB218_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    sd a2, 8(sp)
+; RV64I-NEXT:    bgeu s1, a2, .LBB218_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB218_1 Depth=1
+; RV64I-NEXT:    mv a2, s1
+; RV64I-NEXT:  .LBB218_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB218_1 Depth=1
+; RV64I-NEXT:    mv a0, s2
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s4
+; RV64I-NEXT:    mv a4, s5
+; RV64I-NEXT:    call __atomic_compare_exchange_8
+; RV64I-NEXT:    ld a2, 8(sp)
+; RV64I-NEXT:    beqz a0, .LBB218_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    mv a0, a2
+; RV64I-NEXT:    ld s5, 16(sp)
+; RV64I-NEXT:    ld s4, 24(sp)
+; RV64I-NEXT:    ld s3, 32(sp)
+; RV64I-NEXT:    ld s2, 40(sp)
+; RV64I-NEXT:    ld s1, 48(sp)
+; RV64I-NEXT:    ld ra, 56(sp)
+; RV64I-NEXT:    addi sp, sp, 64
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_umin_i64_acq_rel:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amominu.d.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw umin i64* %a, i64 %b acq_rel
   ret i64 %1
 }
 
 define i64 @atomicrmw_umin_i64_seq_cst(i64 *%a, i64 %b) nounwind {
 ; RV32I-LABEL: atomicrmw_umin_i64_seq_cst:
 ; RV32I:       # %bb.0:
 ; RV32I-NEXT:    addi sp, sp, -32

 ; RV32IA-NEXT:    lw s5, 8(sp)
 ; RV32IA-NEXT:    lw s4, 12(sp)
 ; RV32IA-NEXT:    lw s3, 16(sp)
 ; RV32IA-NEXT:    lw s2, 20(sp)
 ; RV32IA-NEXT:    lw s1, 24(sp)
 ; RV32IA-NEXT:    lw ra, 28(sp)
 ; RV32IA-NEXT:    addi sp, sp, 32
 ; RV32IA-NEXT:    ret
+;
+; RV64I-LABEL: atomicrmw_umin_i64_seq_cst:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -48
+; RV64I-NEXT:    sd ra, 40(sp)
+; RV64I-NEXT:    sd s1, 32(sp)
+; RV64I-NEXT:    sd s2, 24(sp)
+; RV64I-NEXT:    sd s3, 16(sp)
+; RV64I-NEXT:    sd s4, 8(sp)
+; RV64I-NEXT:    mv s1, a1
+; RV64I-NEXT:    mv s2, a0
+; RV64I-NEXT:    ld a2, 0(a0)
+; RV64I-NEXT:    mv s3, sp
+; RV64I-NEXT:    addi s4, zero, 5
+; RV64I-NEXT:  .LBB219_1: # %atomicrmw.start
+; RV64I-NEXT:    # =>This Inner Loop Header: Depth=1
+; RV64I-NEXT:    sd a2, 0(sp)
+; RV64I-NEXT:    bgeu s1, a2, .LBB219_3
+; RV64I-NEXT:  # %bb.2: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB219_1 Depth=1
+; RV64I-NEXT:    mv a2, s1
+; RV64I-NEXT:  .LBB219_3: # %atomicrmw.start
+; RV64I-NEXT:    # in Loop: Header=BB219_1 Depth=1
+; RV64I-NEXT:    mv a0, s2
+; RV64I-NEXT:    mv a1, s3
+; RV64I-NEXT:    mv a3, s4
+; RV64I-NEXT:    mv a4, s4
+; RV64I-NEXT:    call __atomic_compare_exchange_8
+; RV64I-NEXT:    ld a2, 0(sp)
+; RV64I-NEXT:    beqz a0, .LBB219_1
+; RV64I-NEXT:  # %bb.4: # %atomicrmw.end
+; RV64I-NEXT:    mv a0, a2
+; RV64I-NEXT:    ld s4, 8(sp)
+; RV64I-NEXT:    ld s3, 16(sp)
+; RV64I-NEXT:    ld s2, 24(sp)
+; RV64I-NEXT:    ld s1, 32(sp)
+; RV64I-NEXT:    ld ra, 40(sp)
+; RV64I-NEXT:    addi sp, sp, 48
+; RV64I-NEXT:    ret
+;
+; RV64IA-LABEL: atomicrmw_umin_i64_seq_cst:
+; RV64IA:       # %bb.0:
+; RV64IA-NEXT:    amominu.d.aqrl a0, a1, (a0)
+; RV64IA-NEXT:    ret
   %1 = atomicrmw umin i64* %a, i64 %b seq_cst
   ret i64 %1
 }