[mips] Fix sc, scs, ll, lld instructions expanding

[atanasyan]

Summary

There are a couple of bugs with the sc, scs, ll, lld instructions expanding:

1. On R6 these instruction pack immediate offset into a 9-bit field. Now if an immediate exceeds 9-bits assembler does not perform expansion and just rejects such instruction.

2. On 64-bit non-PIC code if an operand is a symbol assembler generates incorrect sequence of instructions. It uses` R_MIPS_HI16` and R_MIPS_LO16 relocations and skips R_MIPS_HIGHEST and R_MIPS_HIGHER ones.

To solve these problems this patch:

• Introduces mem_simm9_exp to mark 9-bit memory immediate operands which require expansion. Probably later all mem_simm9 operands will be able to migrate on mem_simm9_exp and we rename it to mem_simm9.
• Adds new OPERAND_MEM_SIMM9 operand type and assigns it to the mem_simm9_exp. That allows to know operand size in the processInstruction method and decide whether we need to expand instruction.
• Adds expandMem9Inst method to expand instructions with 9-bit memory immediate operand. This method just load immediate into a "base" register used by original instruction:

sc $2, 256($sp) => addiu  $1, $sp, 256
                   sc     $2, 0($1)

• Fix expandMem16Inst to support a correct set of relocations for symbol loading in case of 64-bit non-PIC code.

ll $12, symbol => lui    $12, 0
                      R_MIPS_HIGHEST symbol
                  daddiu $12, $12, 0
                      R_MIPS_HIGHER symbol
                  dsll   $12, $12, 16
                  daddiu $12, $12, 0
                      R_MIPS_HI16 symbol
                  dsll   $12, $12, 16
                  ll     $12, 0($12)
                      R_MIPS_LO16 symbol

• Fix expandMem16Inst to unify handling of 3 and 4 operands instructions.
• Delete unused now MipsTargetStreamer::emitSCWithSymOffset method.

Task for next patches - implement expanding for other instructions use mem_simm9 operand and other mem_simm## operands.

[Petar.Avramovic]

LGTM.

llvm/lib/Target/Mips/AsmParser/MipsAsmParser.cpp

3745

isGP64bit() feel more like an assert here or in ArePtrs64bit().
ABI.ArePtrs64bit() ? Mips::DADDu : Mips::ADDu implies that gpr are 64 bit when pointers are 64.
Flags: llvm-mc -triple mips64el -mattr=-gp64 ... make subtarget with N64 and no gp64, and this works like O32?

[atanasyan]

llvm/lib/Target/Mips/AsmParser/MipsAsmParser.cpp

3745

It's a result of copy-paste. I think if (ABI.IsN64()) condition is enough here.

Thanks for review.

llvm/lib/Target/Mips/AsmParser/MipsAsmParser.cpp

#include "MipsGenAsmMatcher.inc"
   bool expandLoadAddress(unsigned DstReg, unsigned BaseReg,
                          const MCOperand &Offset, bool Is32BitAddress,
                          SMLoc IDLoc, MCStreamer &Out,
                          const MCSubtargetInfo *STI);
 
   bool expandUncondBranchMMPseudo(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
                                   const MCSubtargetInfo *STI);
 
-  void expandMemInst(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
+  void expandMem16Inst(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
+                       const MCSubtargetInfo *STI, bool IsLoad);
+  void expandMem9Inst(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
                       const MCSubtargetInfo *STI, bool IsLoad);
 
   bool expandLoadStoreMultiple(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
                                const MCSubtargetInfo *STI);
 
   bool expandAliasImmediate(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
                             const MCSubtargetInfo *STI);
 
   bool expandBranchImm(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
static bool needsExpandMemInst(MCInst &Inst) {
   const MCInstrDesc &MCID = getInstDesc(Inst.getOpcode());
 
   unsigned NumOp = MCID.getNumOperands();
   if (NumOp != 3 && NumOp != 4)
     return false;
 
   const MCOperandInfo &OpInfo = MCID.OpInfo[NumOp - 1];
   if (OpInfo.OperandType != MCOI::OPERAND_MEMORY &&
-      OpInfo.OperandType != MCOI::OPERAND_UNKNOWN)
+      OpInfo.OperandType != MCOI::OPERAND_UNKNOWN &&
+      OpInfo.OperandType != MipsII::OPERAND_MEM_SIMM9)
     return false;
 
   MCOperand &Op = Inst.getOperand(NumOp - 1);
   if (Op.isImm()) {
+    if (OpInfo.OperandType == MipsII::OPERAND_MEM_SIMM9)
+      return !isInt<9>(Op.getImm());
     // Offset can't exceed 16bit value.
     return !isInt<16>(Op.getImm());
   }
 
   if (Op.isExpr()) {
     const MCExpr *Expr = Op.getExpr();
     if (Expr->getKind() != MCExpr::SymbolRef)
       return !isEvaluated(Expr);
if ((Opcode == Mips::JAL || Opcode == Mips::JAL_MM) && inPicMode()) {
     Inst = JalrInst;
     ExpandedJalSym = true;
   }
 
   if (MCID.mayLoad() || MCID.mayStore()) {
     // Check the offset of memory operand, if it is a symbol
     // reference or immediate we may have to expand instructions.
     if (needsExpandMemInst(Inst)) {
-      expandMemInst(Inst, IDLoc, Out, STI, MCID.mayLoad());
+      const MCInstrDesc &MCID = getInstDesc(Inst.getOpcode());
+      switch (MCID.OpInfo[MCID.getNumOperands() - 1].OperandType) {
+      case MipsII::OPERAND_MEM_SIMM9:
+        expandMem9Inst(Inst, IDLoc, Out, STI, MCID.mayLoad());
+        break;
+      default:
+        expandMem16Inst(Inst, IDLoc, Out, STI, MCID.mayLoad());
+        break;
+      }
       return getParser().hasPendingError();
     }
   }
 
   if (inMicroMipsMode()) {
     if (MCID.mayLoad() && Opcode != Mips::LWP_MM) {
       // Try to create 16-bit GP relative load instruction.
       for (unsigned i = 0; i < MCID.getNumOperands(); i++) {
if (IsLikely) {
               MCOperand::createExpr(MemOffsetOp.getExpr()), IDLoc, STI);
       TOut.emitRRI(Mips::SLL, Mips::ZERO, Mips::ZERO, 0, IDLoc, STI);
     } else
       TOut.emitRRX(OpCode, DstRegOp.getReg(), ATReg, MemOffsetOp, IDLoc, STI);
   }
   return false;
 }
 
-void MipsAsmParser::expandMemInst(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
+void MipsAsmParser::expandMem16Inst(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
                                     const MCSubtargetInfo *STI, bool IsLoad) {
-  const MCOperand &DstRegOp = Inst.getOperand(0);
+  unsigned NumOp = Inst.getNumOperands();
+  assert((NumOp == 3 || NumOp == 4) && "unexpected operands number");
+  unsigned StartOp = NumOp == 3 ? 0 : 1;
+
+  const MCOperand &DstRegOp = Inst.getOperand(StartOp);
   assert(DstRegOp.isReg() && "expected register operand kind");
-  const MCOperand &BaseRegOp = Inst.getOperand(1);
+  const MCOperand &BaseRegOp = Inst.getOperand(StartOp + 1);
   assert(BaseRegOp.isReg() && "expected register operand kind");
+  const MCOperand &OffsetOp = Inst.getOperand(StartOp + 2);
 
   MipsTargetStreamer &TOut = getTargetStreamer();
+  unsigned OpCode = Inst.getOpcode();
   unsigned DstReg = DstRegOp.getReg();
   unsigned BaseReg = BaseRegOp.getReg();
   unsigned TmpReg = DstReg;
 
-  const MCInstrDesc &Desc = getInstDesc(Inst.getOpcode());
-  int16_t DstRegClass = Desc.OpInfo[0].RegClass;
+  const MCInstrDesc &Desc = getInstDesc(OpCode);
+  int16_t DstRegClass = Desc.OpInfo[StartOp].RegClass;
   unsigned DstRegClassID =
       getContext().getRegisterInfo()->getRegClass(DstRegClass).getID();
   bool IsGPR = (DstRegClassID == Mips::GPR32RegClassID) ||
                (DstRegClassID == Mips::GPR64RegClassID);
 
   if (!IsLoad || !IsGPR || (BaseReg == DstReg)) {
     // At this point we need AT to perform the expansions
     // and we exit if it is not available.
     TmpReg = getATReg(IDLoc);
     if (!TmpReg)
       return;
   }
 
-  if (Inst.getNumOperands() > 3) {
-    const MCOperand &BaseRegOp = Inst.getOperand(2);
-    assert(BaseRegOp.isReg() && "expected register operand kind");
-    const MCOperand &ExprOp = Inst.getOperand(3);
-    assert(ExprOp.isExpr() && "expected expression oprand kind");
-
-    unsigned BaseReg = BaseRegOp.getReg();
-    const MCExpr *ExprOffset = ExprOp.getExpr();
-
-    MCOperand LoOperand = MCOperand::createExpr(
-        MipsMCExpr::create(MipsMCExpr::MEK_LO, ExprOffset, getContext()));
-    MCOperand HiOperand = MCOperand::createExpr(
-        MipsMCExpr::create(MipsMCExpr::MEK_HI, ExprOffset, getContext()));
-    TOut.emitSCWithSymOffset(Inst.getOpcode(), DstReg, BaseReg, HiOperand,
-                             LoOperand, TmpReg, IDLoc, STI);
-    return;
-  }
-
-  const MCOperand &OffsetOp = Inst.getOperand(2);
+  auto emitInstWithOffset = [&](const MCOperand &Off) {
+    if (NumOp == 3)
+      TOut.emitRRX(OpCode, DstReg, TmpReg, Off, IDLoc, STI);
+    else
+      TOut.emitRRRX(OpCode, DstReg, DstReg, TmpReg, Off, IDLoc, STI);
+  };
 
   if (OffsetOp.isImm()) {
     int64_t LoOffset = OffsetOp.getImm() & 0xffff;
     int64_t HiOffset = OffsetOp.getImm() & ~0xffff;
 
     // If msb of LoOffset is 1(negative number) we must increment
     // HiOffset to account for the sign-extension of the low part.
     if (LoOffset & 0x8000)
       HiOffset += 0x10000;
 
     bool IsLargeOffset = HiOffset != 0;
 
     if (IsLargeOffset) {
-      bool Is32BitImm = (HiOffset >> 32) == 0;
+      bool Is32BitImm = isInt<32>(OffsetOp.getImm());
       if (loadImmediate(HiOffset, TmpReg, Mips::NoRegister, Is32BitImm, true,
                         IDLoc, Out, STI))
         return;
     }
 
     if (BaseReg != Mips::ZERO && BaseReg != Mips::ZERO_64)
-      TOut.emitRRR(isGP64bit() ? Mips::DADDu : Mips::ADDu, TmpReg, TmpReg,
-                   BaseReg, IDLoc, STI);
-    TOut.emitRRI(Inst.getOpcode(), DstReg, TmpReg, LoOffset, IDLoc, STI);
+      TOut.emitRRR(ABI.ArePtrs64bit() ? Mips::DADDu : Mips::ADDu, TmpReg,
+                   TmpReg, BaseReg, IDLoc, STI);
+    emitInstWithOffset(MCOperand::createImm(int16_t(LoOffset)));
     return;
   }
 
   if (OffsetOp.isExpr()) {
     if (inPicMode()) {
       // FIXME:
       // c) Check that immediates of R_MIPS_GOT16/R_MIPS_LO16 relocations
       //    do not exceed 16-bit.
       // d) Use R_MIPS_GOT_PAGE/R_MIPS_GOT_OFST relocations instead
       //    of R_MIPS_GOT_DISP in appropriate cases to reduce number
       //    of GOT entries.
       MCValue Res;
       if (!OffsetOp.getExpr()->evaluateAsRelocatable(Res, nullptr, nullptr)) {
         Error(IDLoc, "expected relocatable expression");
         return;
       }
       if (Res.getSymB() != nullptr) {
         Error(IDLoc, "expected relocatable expression with only one symbol");
         return;
       }
 
       loadAndAddSymbolAddress(Res.getSymA(), TmpReg, BaseReg,
                               !ABI.ArePtrs64bit(), IDLoc, Out, STI);
-      TOut.emitRRI(Inst.getOpcode(), DstReg, TmpReg, Res.getConstant(), IDLoc,
-                   STI);
+      emitInstWithOffset(MCOperand::createImm(int16_t(Res.getConstant())));
     } else {
       // FIXME: Implement 64-bit case.
       // 1) lw $8, sym => lui $8,  %hi(sym)
       //                  lw  $8,  %lo(sym)($8)
       // 2) sw $8, sym => lui $at, %hi(sym)
       //                  sw  $8,  %lo(sym)($at)
-      const MCExpr *ExprOffset = OffsetOp.getExpr();
+      const MCExpr *OffExpr = OffsetOp.getExpr();
       MCOperand LoOperand = MCOperand::createExpr(
-          MipsMCExpr::create(MipsMCExpr::MEK_LO, ExprOffset, getContext()));
+          MipsMCExpr::create(MipsMCExpr::MEK_LO, OffExpr, getContext()));
       MCOperand HiOperand = MCOperand::createExpr(
-          MipsMCExpr::create(MipsMCExpr::MEK_HI, ExprOffset, getContext()));
+          MipsMCExpr::create(MipsMCExpr::MEK_HI, OffExpr, getContext()));
+
+      if (ABI.ArePtrs64bit() && isGP64bit()) {
+        MCOperand HighestOperand = MCOperand::createExpr(
+            MipsMCExpr::create(MipsMCExpr::MEK_HIGHEST, OffExpr, getContext()));
+        MCOperand HigherOperand = MCOperand::createExpr(
+            MipsMCExpr::create(MipsMCExpr::MEK_HIGHER, OffExpr, getContext()));
 
+        TOut.emitRX(Mips::LUi, TmpReg, HighestOperand, IDLoc, STI);
+        TOut.emitRRX(Mips::DADDiu, TmpReg, TmpReg, HigherOperand, IDLoc, STI);
+        TOut.emitRRI(Mips::DSLL, TmpReg, TmpReg, 16, IDLoc, STI);
+        TOut.emitRRX(Mips::DADDiu, TmpReg, TmpReg, HiOperand, IDLoc, STI);
+        TOut.emitRRI(Mips::DSLL, TmpReg, TmpReg, 16, IDLoc, STI);
+        if (BaseReg != Mips::ZERO && BaseReg != Mips::ZERO_64)
+          TOut.emitRRR(Mips::DADDu, TmpReg, TmpReg, BaseReg, IDLoc, STI);
+        emitInstWithOffset(LoOperand);
+      } else {
         // Generate the base address in TmpReg.
         TOut.emitRX(Mips::LUi, TmpReg, HiOperand, IDLoc, STI);
         if (BaseReg != Mips::ZERO)
           TOut.emitRRR(Mips::ADDu, TmpReg, TmpReg, BaseReg, IDLoc, STI);
         // Emit the load or store with the adjusted base and offset.
-      TOut.emitRRX(Inst.getOpcode(), DstReg, TmpReg, LoOperand, IDLoc, STI);
+        emitInstWithOffset(LoOperand);
       }
+    }
+    return;
+  }
+
+  llvm_unreachable("unexpected operand type");
+}
+
+void MipsAsmParser::expandMem9Inst(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
+                                   const MCSubtargetInfo *STI, bool IsLoad) {
+  unsigned NumOp = Inst.getNumOperands();
+  assert((NumOp == 3 || NumOp == 4) && "unexpected operands number");
+  unsigned StartOp = NumOp == 3 ? 0 : 1;
+
+  const MCOperand &DstRegOp = Inst.getOperand(StartOp);
+  assert(DstRegOp.isReg() && "expected register operand kind");
+  const MCOperand &BaseRegOp = Inst.getOperand(StartOp + 1);
+  assert(BaseRegOp.isReg() && "expected register operand kind");
+  const MCOperand &OffsetOp = Inst.getOperand(StartOp + 2);
+
+  MipsTargetStreamer &TOut = getTargetStreamer();
+  unsigned OpCode = Inst.getOpcode();
+  unsigned DstReg = DstRegOp.getReg();
+  unsigned BaseReg = BaseRegOp.getReg();
+  unsigned TmpReg = DstReg;
+
+  const MCInstrDesc &Desc = getInstDesc(OpCode);
+  int16_t DstRegClass = Desc.OpInfo[StartOp].RegClass;
+  unsigned DstRegClassID =
+      getContext().getRegisterInfo()->getRegClass(DstRegClass).getID();
+  bool IsGPR = (DstRegClassID == Mips::GPR32RegClassID) ||
+               (DstRegClassID == Mips::GPR64RegClassID);
+
+  if (!IsLoad || !IsGPR || (BaseReg == DstReg)) {
+    // At this point we need AT to perform the expansions
+    // and we exit if it is not available.
+    TmpReg = getATReg(IDLoc);
+    if (!TmpReg)
+      return;
+  }
+
+  auto emitInst = [&]() {
+    if (NumOp == 3)
+      TOut.emitRRX(OpCode, DstReg, TmpReg, MCOperand::createImm(0), IDLoc, STI);
+    else
+      TOut.emitRRRX(OpCode, DstReg, DstReg, TmpReg, MCOperand::createImm(0),
+                    IDLoc, STI);
+  };
+
+  if (OffsetOp.isImm()) {
+    loadImmediate(OffsetOp.getImm(), TmpReg, BaseReg, !ABI.ArePtrs64bit(), true,
+                  IDLoc, Out, STI);
+    emitInst();
+    return;
+  }
+
+  if (OffsetOp.isExpr()) {
+    loadAndAddSymbolAddress(OffsetOp.getExpr(), TmpReg, BaseReg,
+                            !ABI.ArePtrs64bit(), IDLoc, Out, STI);
+    emitInst();
     return;
   }
 
   llvm_unreachable("unexpected operand type");
 }
 
 bool MipsAsmParser::expandLoadStoreMultiple(MCInst &Inst, SMLoc IDLoc,
                                             MCStreamer &Out,

llvm/lib/Target/Mips/MCTargetDesc/MipsBaseInfo.h

 //
 //===----------------------------------------------------------------------===//
 #ifndef LLVM_LIB_TARGET_MIPS_MCTARGETDESC_MIPSBASEINFO_H
 #define LLVM_LIB_TARGET_MIPS_MCTARGETDESC_MIPSBASEINFO_H
 
 #include "MipsFixupKinds.h"
 #include "MipsMCTargetDesc.h"
 #include "llvm/MC/MCExpr.h"
+#include "llvm/MC/MCInstrDesc.h"
 #include "llvm/Support/DataTypes.h"
 #include "llvm/Support/ErrorHandling.h"
 
 namespace llvm {
 
 /// MipsII - This namespace holds all of the target specific flags that
 /// instruction info tracks.
 ///
enum {
     /// IsCTI - Instruction is a Control Transfer Instruction.
     IsCTI = 1 << 4,
     /// HasForbiddenSlot - Instruction has a forbidden slot.
     HasForbiddenSlot = 1 << 5,
     /// HasFCCRegOperand - Instruction uses an $fcc<x> register.
     HasFCCRegOperand = 1 << 6
 
   };
+
+  enum OperandType : unsigned {
+    OPERAND_FIRST_MIPS_MEM_IMM = MCOI::OPERAND_FIRST_TARGET,
+    OPERAND_MEM_SIMM9 = OPERAND_FIRST_MIPS_MEM_IMM,
+    OPERAND_LAST_MIPS_MEM_IMM = OPERAND_MEM_SIMM9
+  };
 }
 }
 
 #endif

llvm/lib/Target/Mips/MCTargetDesc/MipsMCTargetDesc.cpp

 //===-- MipsMCTargetDesc.cpp - Mips Target Descriptions -------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
 // This file provides Mips specific target descriptions.
 //
 //===----------------------------------------------------------------------===//
 
 #include "MipsMCTargetDesc.h"
 #include "MipsAsmBackend.h"
+#include "MipsBaseInfo.h"
 #include "MipsELFStreamer.h"
 #include "MipsInstPrinter.h"
 #include "MipsMCAsmInfo.h"
 #include "MipsMCNaCl.h"
 #include "MipsTargetStreamer.h"
 #include "TargetInfo/MipsTargetInfo.h"
 #include "llvm/ADT/Triple.h"
 #include "llvm/MC/MCCodeEmitter.h"

llvm/lib/Target/Mips/MCTargetDesc/MipsTargetStreamer.cpp

 using namespace llvm;
 
 namespace {
 static cl::opt<bool> RoundSectionSizes(
     "mips-round-section-sizes", cl::init(false),
     cl::desc("Round section sizes up to the section alignment"), cl::Hidden);
 } // end anonymous namespace
 
-static bool isMipsR6(const MCSubtargetInfo *STI) {
-  return STI->getFeatureBits()[Mips::FeatureMips32r6] ||
-         STI->getFeatureBits()[Mips::FeatureMips64r6];
-}
-
 static bool isMicroMips(const MCSubtargetInfo *STI) {
   return STI->getFeatureBits()[Mips::FeatureMicroMips];
 }
 
 MipsTargetStreamer::MipsTargetStreamer(MCStreamer &S)
     : MCTargetStreamer(S), GPReg(Mips::GP), ModuleDirectiveAllowed(true) {
   GPRInfoSet = FPRInfoSet = FrameInfoSet = false;
 }
void MipsTargetStreamer::emitStoreWithImmOffset(
   // Generate the base address in ATReg.
   emitRI(Mips::LUi, ATReg, HiOffset, IDLoc, STI);
   if (BaseReg != Mips::ZERO)
     emitRRR(Mips::ADDu, ATReg, ATReg, BaseReg, IDLoc, STI);
   // Emit the store with the adjusted base and offset.
   emitRRI(Opcode, SrcReg, ATReg, LoOffset, IDLoc, STI);
 }
 
-/// Emit a store instruction with an symbol offset.
-void MipsTargetStreamer::emitSCWithSymOffset(unsigned Opcode, unsigned SrcReg,
-                                             unsigned BaseReg,
-                                             MCOperand &HiOperand,
-                                             MCOperand &LoOperand,
-                                             unsigned ATReg, SMLoc IDLoc,
-                                             const MCSubtargetInfo *STI) {
-  // sc $8, sym => lui $at, %hi(sym)
-  //               sc $8, %lo(sym)($at)
-
-  // Generate the base address in ATReg.
-  emitRX(Mips::LUi, ATReg, HiOperand, IDLoc, STI);
-  if (!isMicroMips(STI) && isMipsR6(STI)) {
-    // For non-micromips r6 offset for 'sc' is not in the lower 16 bits so we
-    // put it in 'at'.
-    // sc $8, sym => lui $at, %hi(sym)
-    //               addiu $at, $at, %lo(sym)
-    //               sc $8, 0($at)
-    emitRRX(Mips::ADDiu, ATReg, ATReg, LoOperand, IDLoc, STI);
-    MCOperand Offset = MCOperand::createImm(0);
-    // Emit the store with the adjusted base and offset.
-    emitRRRX(Opcode, SrcReg, SrcReg, ATReg, Offset, IDLoc, STI);
-  } else {
-    if (BaseReg != Mips::ZERO)
-      emitRRR(Mips::ADDu, ATReg, ATReg, BaseReg, IDLoc, STI);
-    // Emit the store with the adjusted base and offset.
-    emitRRRX(Opcode, SrcReg, SrcReg, ATReg, LoOperand, IDLoc, STI);
-  }
-}
-
 /// Emit a load instruction with an immediate offset. DstReg and TmpReg are
 /// permitted to be the same register iff DstReg is distinct from BaseReg and
 /// DstReg is a GPR. It is the callers responsibility to identify such cases
 /// and pass the appropriate register in TmpReg.
 void MipsTargetStreamer::emitLoadWithImmOffset(unsigned Opcode, unsigned DstReg,
                                                unsigned BaseReg, int64_t Offset,
                                                unsigned TmpReg, SMLoc IDLoc,
                                                const MCSubtargetInfo *STI) {

llvm/lib/Target/Mips/Mips32r6InstrInfo.td

class LL_R6_DESC_BASE<string instr_asm, RegisterOperand GPROpnd,
   dag OutOperandList = (outs GPROpnd:$rt);
   dag InOperandList = (ins MemOpnd:$addr);
   string AsmString = !strconcat(instr_asm, "\t$rt, $addr");
   list<dag> Pattern = [];
   bit mayLoad = 1;
   InstrItinClass Itinerary = itin;
 }
 
-class LL_R6_DESC : LL_R6_DESC_BASE<"ll", GPR32Opnd, mem_simm9, II_LL>;
+class LL_R6_DESC : LL_R6_DESC_BASE<"ll", GPR32Opnd, mem_simm9_exp, II_LL>;
 
 class SC_R6_DESC_BASE<string instr_asm, RegisterOperand GPROpnd,
                       InstrItinClass itin> {
   dag OutOperandList = (outs GPROpnd:$dst);
-  dag InOperandList = (ins GPROpnd:$rt, mem_simm9:$addr);
+  dag InOperandList = (ins GPROpnd:$rt, mem_simm9_exp:$addr);
   string AsmString = !strconcat(instr_asm, "\t$rt, $addr");
   list<dag> Pattern = [];
   bit mayStore = 1;
   string Constraints = "$rt = $dst";
   InstrItinClass Itinerary = itin;
 }
 
 class SC_R6_DESC : SC_R6_DESC_BASE<"sc", GPR32Opnd, II_SC>;

llvm/lib/Target/Mips/Mips64r6InstrInfo.td

 class DMOD_DESC    : DIVMOD_DESC_BASE<"dmod", GPR64Opnd, II_DMOD, srem>;
 class DMODU_DESC   : DIVMOD_DESC_BASE<"dmodu", GPR64Opnd, II_DMODU, urem>;
 class DMUH_DESC    : MUL_R6_DESC_BASE<"dmuh", GPR64Opnd, II_DMUH, mulhs>;
 class DMUHU_DESC   : MUL_R6_DESC_BASE<"dmuhu", GPR64Opnd, II_DMUHU, mulhu>;
 class DMUL_R6_DESC : MUL_R6_DESC_BASE<"dmul", GPR64Opnd, II_DMUL, mul>;
 class DMULU_DESC   : MUL_R6_DESC_BASE<"dmulu", GPR64Opnd, II_DMUL>;
 class LDPC_DESC    : PCREL_DESC_BASE<"ldpc", GPR64Opnd, simm18_lsl3, II_LDPC>;
 class LWUPC_DESC   : PCREL_DESC_BASE<"lwupc", GPR32Opnd, simm19_lsl2, II_LWUPC>;
-class LLD_R6_DESC   : LL_R6_DESC_BASE<"lld", GPR64Opnd, mem_simmptr, II_LLD>;
+class LLD_R6_DESC   : LL_R6_DESC_BASE<"lld", GPR64Opnd, mem_simm9_exp, II_LLD>;
 class SCD_R6_DESC   : SC_R6_DESC_BASE<"scd", GPR64Opnd, II_SCD>;
 class SELEQZ64_DESC : SELEQNE_Z_DESC_BASE<"seleqz", GPR64Opnd>;
 class SELNEZ64_DESC : SELEQNE_Z_DESC_BASE<"selnez", GPR64Opnd>;
 
 class BGEC64_DESC : CMP_BC_DESC_BASE<"bgec", brtarget, GPR64Opnd>;
 class BGEUC64_DESC : CMP_BC_DESC_BASE<"bgeuc", brtarget, GPR64Opnd>;
 class BEQC64_DESC : CMP_BC_DESC_BASE<"beqc", brtarget, GPR64Opnd>;
 class BNEC64_DESC : CMP_BC_DESC_BASE<"bnec", brtarget, GPR64Opnd>;

 
 class JIC64_DESC : JMP_IDX_COMPACT_DESC_BASE<"jic", jmpoffset16, GPR64Opnd,
                                              II_JIC> {
   bit isBarrier = 1;
   bit isTerminator = 1;
   list<Register> Defs = [AT];
 }
 
-class LL64_R6_DESC : LL_R6_DESC_BASE<"ll", GPR32Opnd, mem_simm9, II_LL>;
+class LL64_R6_DESC : LL_R6_DESC_BASE<"ll", GPR32Opnd, mem_simm9_exp, II_LL>;
 class SC64_R6_DESC : SC_R6_DESC_BASE<"sc", GPR32Opnd, II_SC>;
 
 class JR_HB64_R6_DESC : JR_HB_DESC_BASE<"jr.hb", GPR64Opnd> {
   bit isBranch = 1;
   bit isIndirectBranch = 1;
   bit hasDelaySlot = 1;
   bit isTerminator=1;
   bit isBarrier=1;

llvm/lib/Target/Mips/MipsInstrInfo.td

def mem_msa : mem_generic {
   let MIOperandInfo = (ops ptr_rc, simm10);
   let EncoderMethod = "getMSAMemEncoding";
 }
 
 def simm12 : Operand<i32> {
   let DecoderMethod = "DecodeSimm12";
 }
 
+def mem_simm9_exp : mem_generic {
+  let MIOperandInfo = (ops ptr_rc, simm9);
+  let ParserMatchClass = MipsMemSimmPtrAsmOperand;
+  let OperandNamespace = "MipsII";
+  let OperandType = "OPERAND_MEM_SIMM9";
+}
+
 foreach I = {9, 10, 11, 12, 16} in
   def mem_simm # I : mem_generic {
     let MIOperandInfo = (ops ptr_rc, !cast<Operand>("simm" # I));
     let ParserMatchClass = MipsMemSimmAsmOperand<I>;
   }
 
 foreach I = {1, 2, 3} in
   def mem_simm10_lsl # I : mem_generic {

llvm/lib/Target/Mips/MipsTargetStreamer.h

public:
   /// GetATReg() is a callback that can be used to obtain the current assembler
   /// temporary and is only called when the assembler temporary is required. It
   /// must handle the case where no assembler temporary is available (typically
   /// by reporting an error).
   void emitStoreWithImmOffset(unsigned Opcode, unsigned SrcReg,
                               unsigned BaseReg, int64_t Offset,
                               function_ref<unsigned()> GetATReg, SMLoc IDLoc,
                               const MCSubtargetInfo *STI);
-  void emitSCWithSymOffset(unsigned Opcode, unsigned SrcReg, unsigned BaseReg,
-                           MCOperand &HiOperand, MCOperand &LoOperand,
-                           unsigned ATReg, SMLoc IDLoc,
-                           const MCSubtargetInfo *STI);
   void emitLoadWithImmOffset(unsigned Opcode, unsigned DstReg, unsigned BaseReg,
                              int64_t Offset, unsigned TmpReg, SMLoc IDLoc,
                              const MCSubtargetInfo *STI);
   void emitGPRestore(int Offset, SMLoc IDLoc, const MCSubtargetInfo *STI);
 
   void forbidModuleDirective() { ModuleDirectiveAllowed = false; }
   void reallowModuleDirective() { ModuleDirectiveAllowed = true; }
   bool isModuleDirectiveAllowed() { return ModuleDirectiveAllowed; }

llvm/test/MC/Mips/ll-expansion.s

+# RUN: llvm-mc -filetype=obj -triple mips -mcpu=mips2 %s -o - \
+# RUN:   | llvm-objdump -d -r - | FileCheck %s --check-prefix=MIPS32
+# RUN: llvm-mc -filetype=obj -triple mips -mcpu=mips32 %s -o - \
+# RUN:   | llvm-objdump -d -r - | FileCheck %s --check-prefix=MIPS32
+# RUN: llvm-mc -filetype=obj -triple mips -mcpu=mips32r2 %s -o - \
+# RUN:   | llvm-objdump -d -r - | FileCheck %s --check-prefix=MIPS32
+# RUN: llvm-mc -filetype=obj -triple mipsn32 -mcpu=mips3 %s -o - \
+# RUN:   | llvm-objdump -d -r - | FileCheck %s --check-prefix=MIPSN32
+# RUN: llvm-mc -filetype=obj -triple mipsn32 -mcpu=mips64r6 %s -o - \
+# RUN:   | llvm-objdump -d -r - | FileCheck %s --check-prefix=MIPSN32R6
+# RUN: llvm-mc -filetype=obj -triple mips64 -mcpu=mips64 %s -o - \
+# RUN:   | llvm-objdump -d -r - | FileCheck %s --check-prefix=MIPS64
+# RUN: llvm-mc -filetype=obj -triple mips64 -mcpu=mips64r2 %s -o - \
+# RUN:   | llvm-objdump -d -r - | FileCheck %s --check-prefix=MIPS64
+# RUN: llvm-mc -filetype=obj -triple mips -mcpu=mips32r6 %s -o - \
+# RUN:   | llvm-objdump -d -r - | FileCheck %s --check-prefix=MIPS32R6
+# RUN: llvm-mc -filetype=obj -triple mips64 -mcpu=mips64r6 %s -o - \
+# RUN:   | llvm-objdump -d -r - | FileCheck %s --check-prefix=MIPS64R6
+
+ll $2, 128($sp)
+# MIPS32:         c3 a2 00 80  ll     $2, 128($sp)
+# MIPS32R6:       7f a2 40 36  ll     $2, 128($sp)
+# MIPSN32:        c3 a2 00 80  ll     $2, 128($sp)
+# MIPSN32R6:      7f a2 40 36  ll     $2, 128($sp)
+# MIPS64:         c3 a2 00 80  ll     $2, 128($sp)
+# MIPS64R6:       7f a2 40 36  ll     $2, 128($sp)
+
+ll $2, -128($sp)
+# MIPS32:         c3 a2 ff 80  ll     $2, -128($sp)
+# MIPS32R6:       7f a2 c0 36  ll     $2, -128($sp)
+# MIPSN32:        c3 a2 ff 80  ll     $2, -128($sp)
+# MIPSN32R6:      7f a2 c0 36  ll     $2, -128($sp)
+# MIPS64:         c3 a2 ff 80  ll     $2, -128($sp)
+# MIPS64R6:       7f a2 c0 36  ll     $2, -128($sp)
+
+ll $2, 256($sp)
+# MIPS32:         c3 a2 01 00  ll     $2, 256($sp)
+
+# MIPS32R6:       27 a2 01 00  addiu  $2, $sp, 256
+# MIPS32R6-NEXT:  7c 42 00 36  ll     $2, 0($2)
+
+# MIPSN32:        c3 a2 01 00  ll     $2, 256($sp)
+
+# MIPSN32R6:      27 a2 01 00  addiu  $2, $sp, 256
+# MIPSN32R6-NEXT: 7c 42 00 36  ll     $2, 0($2)
+
+# MIPS64:         c3 a2 01 00  ll     $2, 256($sp)
+
+# MIPS64R6:       67 a2 01 00  daddiu $2, $sp, 256
+# MIPS64R6-NEXT:  7c 42 00 36  ll     $2, 0($2)
+
+ll $2, -257($sp)
+# MIPS32:         c3 a2 fe ff  ll     $2, -257($sp)
+
+# MIPS32R6:       27 a2 fe ff  addiu  $2, $sp, -257
+# MIPS32R6-NEXT:  7c 42 00 36  ll     $2, 0($2)
+
+# MIPSN32:        c3 a2 fe ff  ll     $2, -257($sp)
+
+# MIPSN32R6:      27 a2 fe ff  addiu  $2, $sp, -257
+# MIPSN32R6-NEXT: 7c 42 00 36  ll     $2, 0($2)
+
+# MIPS64:         c3 a2 fe ff  ll     $2, -257($sp)
+
+# MIPS64R6:       67 a2 fe ff  daddiu $2, $sp, -257
+# MIPS64R6-NEXT:  7c 42 00 36  ll     $2, 0($2)
+
+ll $2, 32767($sp)
+# MIPS32:         c3 a2 7f ff  ll     $2, 32767($sp)
+
+# MIPS32R6:       27 a2 7f ff  addiu  $2, $sp, 32767
+# MIPS32R6-NEXT:  7c 42 00 36  ll     $2, 0($2)
+
+# MIPSN32:        c3 a2 7f ff  ll     $2, 32767($sp)
+
+# MIPSN32R6:      27 a2 7f ff  addiu  $2, $sp, 32767
+# MIPSN32R6-NEXT: 7c 42 00 36  ll     $2, 0($2)
+
+# MIPS64:         c3 a2 7f ff  ll     $2, 32767($sp)
+
+# MIPS64R6:       67 a2 7f ff  daddiu $2, $sp, 32767
+# MIPS64R6-NEXT:  7c 42 00 36  ll     $2, 0($2)
+
+ll $2, 32768($sp)
+# MIPS32:         3c 02 00 01  lui    $2, 1
+# MIPS32-NEXT:    00 5d 10 21  addu   $2, $2, $sp
+# MIPS32-NEXT:    c0 42 80 00  ll     $2, -32768($2)
+
+# MIPS32R6:       34 02 80 00  ori    $2, $zero, 32768
+# MIPS32R6-NEXT:  00 5d 10 21  addu   $2, $2, $sp
+# MIPS32R6-NEXT:  7c 42 00 36  ll     $2, 0($2)
+
+# MIPSN32:        3c 02 00 01  lui    $2, 1
+# MIPSN32-NEXT:   00 5d 10 21  addu   $2, $2, $sp
+# MIPSN32-NEXT:   c0 42 80 00  ll     $2, -32768($2)
+
+# MIPSN32R6:      34 02 80 00  ori    $2, $zero, 32768
+# MIPSN32R6-NEXT: 00 5d 10 21  addu   $2, $2, $sp
+# MIPSN32R6-NEXT: 7c 42 00 36  ll     $2, 0($2)
+
+# MIPS64:         3c 02 00 01  lui    $2, 1
+# MIPS64-NEXT:    00 5d 10 2d  daddu  $2, $2, $sp
+# MIPS64-NEXT:    c0 42 80 00  ll     $2, -32768($2)
+
+# MIPS64R6:       34 02 80 00  ori    $2, $zero, 32768
+# MIPS64R6-NEXT:  00 5d 10 2d  daddu  $2, $2, $sp
+# MIPS64R6-NEXT:  7c 42 00 36  ll     $2, 0($2)
+
+ll $2, -32768($sp)
+# MIPS32:         c3 a2 80 00  ll     $2, -32768($sp)
+
+# MIPS32R6:       27 a2 80 00  addiu  $2, $sp, -32768
+# MIPS32R6-NEXT:  7c 42 00 36  ll     $2, 0($2)
+
+# MIPSN32:        c3 a2 80 00  ll     $2, -32768($sp)
+
+# MIPSN32R6:      27 a2 80 00  addiu  $2, $sp, -32768
+# MIPSN32R6-NEXT: 7c 42 00 36  ll     $2, 0($2)
+
+# MIPS64:         c3 a2 80 00  ll     $2, -32768($sp)
+
+# MIPS64R6:       67 a2 80 00  daddiu $2, $sp, -32768
+# MIPS64R6-NEXT:  7c 42 00 36  ll     $2, 0($2)
+
+ll $2, -32769($sp)
+# MIPS32:         3c 02 ff ff  lui    $2, 65535
+# MIPS32-NEXT:    00 5d 10 21  addu   $2, $2, $sp
+# MIPS32-NEXT:    c0 42 7f ff  ll     $2, 32767($2)
+
+# MIPS32R6:       3c 02 ff ff  aui    $2, $zero, 65535
+# MIPS32R6-NEXT:  34 42 7f ff  ori    $2, $2, 32767
+# MIPS32R6-NEXT:  00 5d 10 21  addu   $2, $2, $sp
+# MIPS32R6-NEXT:  7c 42 00 36  ll     $2, 0($2)
+
+# MIPSN32:        3c 02 ff ff  lui    $2, 65535
+# MIPSN32-NEXT:   00 5d 10 21  addu   $2, $2, $sp
+# MIPSN32-NEXT:   c0 42 7f ff  ll     $2, 32767($2)
+
+# MIPSN32R6:      3c 02 ff ff  aui    $2, $zero, 65535
+# MIPSN32R6-NEXT: 34 42 7f ff  ori    $2, $2, 32767
+# MIPSN32R6-NEXT: 00 5d 10 21  addu   $2, $2, $sp
+# MIPSN32R6-NEXT: 7c 42 00 36  ll     $2, 0($2)
+
+# MIPS64:         3c 02 ff ff  lui    $2, 65535
+# MIPS64-NEXT:    00 5d 10 2d  daddu  $2, $2, $sp
+# MIPS64-NEXT:    c0 42 7f ff  ll     $2, 32767($2)
+
+# MIPS64R6:       3c 02 ff ff  aui    $2, $zero, 65535
+# MIPS64R6-NEXT:  34 42 7f ff  ori    $2, $2, 32767
+# MIPS64R6-NEXT:  00 5d 10 2d  daddu  $2, $2, $sp
+# MIPS64R6-NEXT:  7c 42 00 36  ll     $2, 0($2)
+
+ll $2, 655987($sp)
+# MIPS32:         3c 02 00 0a  lui    $2, 10
+# MIPS32-NEXT:    00 5d 10 21  addu   $2, $2, $sp
+# MIPS32-NEXT:    c0 42 02 73  ll     $2, 627($2)
+
+# MIPS32R6:       3c 02 00 0a  aui    $2, $zero, 10
+# MIPS32R6-NEXT:  34 42 02 73  ori    $2, $2, 627
+# MIPS32R6-NEXT:  00 5d 10 21  addu   $2, $2, $sp
+# MIPS32R6-NEXT:  7c 42 00 36  ll     $2, 0($2)
+
+# MIPSN32:        3c 02 00 0a  lui    $2, 10
+# MIPSN32-NEXT:   00 5d 10 21  addu   $2, $2, $sp
+# MIPSN32-NEXT:   c0 42 02 73  ll     $2, 627($2)
+
+# MIPSN32R6:      3c 02 00 0a  aui    $2, $zero, 10
+# MIPSN32R6-NEXT: 34 42 02 73  ori    $2, $2, 627
+# MIPSN32R6-NEXT: 00 5d 10 21  addu   $2, $2, $sp
+# MIPSN32R6-NEXT: 7c 42 00 36  ll     $2, 0($2)
+
+# MIPS64:         3c 02 00 0a  lui    $2, 10
+# MIPS64-NEXT:    00 5d 10 2d  daddu  $2, $2, $sp
+# MIPS64-NEXT:    c0 42 02 73  ll     $2, 627($2)
+
+# MIPS64R6:       3c 02 00 0a  aui    $2, $zero, 10
+# MIPS64R6-NEXT:  34 42 02 73  ori    $2, $2, 627
+# MIPS64R6-NEXT:  00 5d 10 2d  daddu  $2, $2, $sp
+# MIPS64R6-NEXT:  7c 42 00 36  ll     $2, 0($2)
+
+ll $2, -655987($sp)
+# MIPS32:         3c 02 ff f6  lui    $2, 65526
+# MIPS32-NEXT:    00 5d 10 21  addu   $2, $2, $sp
+# MIPS32-NEXT:    c0 42 fd 8d  ll     $2, -627($2)
+
+# MIPS32R6:       3c 02 ff f5  aui    $2, $zero, 65525
+# MIPS32R6-NEXT:  34 42 fd 8d  ori    $2, $2, 64909
+# MIPS32R6-NEXT:  00 5d 10 21  addu   $2, $2, $sp
+# MIPS32R6-NEXT:  7c 42 00 36  ll     $2, 0($2)
+
+# MIPSN32:        3c 02 ff f6  lui    $2, 65526
+# MIPSN32-NEXT:   00 5d 10 21  addu   $2, $2, $sp
+# MIPSN32-NEXT:   c0 42 fd 8d  ll     $2, -627($2)
+
+# MIPSN32R6:      3c 02 ff f5  aui    $2, $zero, 65525
+# MIPSN32R6-NEXT: 34 42 fd 8d  ori    $2, $2, 64909
+# MIPSN32R6-NEXT: 00 5d 10 21  addu   $2, $2, $sp
+# MIPSN32R6-NEXT: 7c 42 00 36  ll     $2, 0($2)
+
+# MIPS64:         3c 02 ff f6  lui    $2, 65526
+# MIPS64-NEXT:    00 5d 10 2d  daddu  $2, $2, $sp
+# MIPS64-NEXT:    c0 42 fd 8d  ll     $2, -627($2)
+
+# MIPS64R6:       3c 02 ff f5  aui    $2, $zero, 65525
+# MIPS64R6-NEXT:  34 42 fd 8d  ori    $2, $2, 64909
+# MIPS64R6-NEXT:  00 5d 10 2d  daddu  $2, $2, $sp
+# MIPS64R6-NEXT:  7c 42 00 36  ll     $2, 0($2)
+
+ll $12, symbol
+# MIPS32:         3c 0c 00 00  lui    $12, 0
+# MIPS32-NEXT:               R_MIPS_HI16  symbol
+# MIPS32-NEXT:    c1 8c 00 00  ll     $12, 0($12)
+# MIPS32-NEXT:               R_MIPS_LO16  symbol
+
+# MIPS32R6:       3c 0c 00 00  aui    $12, $zero, 0
+# MIPS32R6-NEXT:             R_MIPS_HI16 symbol
+# MIPS32R6-NEXT:  25 8c 00 00  addiu  $12, $12, 0
+# MIPS32R6-NEXT:             R_MIPS_LO16 symbol
+# MIPS32R6-NEXT:  7d 8c 00 36  ll     $12, 0($12)
+
+# MIPSN32:        3c 0c 00 00  lui    $12, 0
+# MIPSN32-NEXT:              R_MIPS_HI16  symbol
+# MIPSN32-NEXT:   c1 8c 00 00  ll     $12, 0($12)
+# MIPSN32-NEXT:              R_MIPS_LO16  symbol
+
+# MIPSN32R6:      3c 0c 00 00  aui    $12, $zero, 0
+# MIPSN32R6-NEXT:            R_MIPS_HI16 symbol
+# MIPSN32R6-NEXT: 25 8c 00 00  addiu  $12, $12, 0
+# MIPSN32R6-NEXT:            R_MIPS_LO16 symbol
+# MIPSN32R6-NEXT: 7d 8c 00 36  ll     $12, 0($12)
+
+# MIPS64:         3c 0c 00 00  lui    $12, 0
+# MIPS64-NEXT:               R_MIPS_HIGHEST/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64-NEXT:    65 8c 00 00  daddiu $12, $12, 0
+# MIPS64-NEXT:               R_MIPS_HIGHER/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64-NEXT:    00 0c 64 38  dsll   $12, $12, 16
+# MIPS64-NEXT:    65 8c 00 00  daddiu $12, $12, 0
+# MIPS64-NEXT:               R_MIPS_HI16/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64-NEXT:    00 0c 64 38  dsll   $12, $12, 16
+# MIPS64-NEXT:    c1 8c 00 00  ll     $12, 0($12)
+# MIPS64-NEXT:               R_MIPS_LO16/R_MIPS_NONE/R_MIPS_NONE  symbol
+
+# MIPS64R6:       3c 0c 00 00  aui    $12, $zero, 0
+# MIPS64R6-NEXT:             R_MIPS_HIGHEST/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64R6-NEXT:  3c 01 00 00  aui    $1, $zero, 0
+# MIPS64R6-NEXT:             R_MIPS_HI16/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64R6-NEXT:  65 8c 00 00  daddiu $12, $12, 0
+# MIPS64R6-NEXT:             R_MIPS_HIGHER/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64R6-NEXT:  64 21 00 00  daddiu $1, $1, 0
+# MIPS64R6-NEXT:             R_MIPS_LO16/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64R6-NEXT:  00 0c 60 3c  dsll32 $12, $12, 0
+# MIPS64R6-NEXT:  01 81 60 2d  daddu  $12, $12, $1
+# MIPS64R6-NEXT:  7d 8c 00 36  ll     $12, 0($12)
+
+ll $12, symbol($3)
+# MIPS32:         3c 0c 00 00  lui    $12, 0
+# MIPS32-NEXT:               R_MIPS_HI16  symbol
+# MIPS32-NEXT:    01 83 60 21  addu   $12, $12, $3
+# MIPS32-NEXT:    c1 8c 00 00  ll     $12, 0($12)
+# MIPS32-NEXT:               R_MIPS_LO16  symbol
+
+# MIPS32R6:       3c 0c 00 00  aui    $12, $zero, 0
+# MIPS32R6-NEXT:             R_MIPS_HI16 symbol
+# MIPS32R6-NEXT:  25 8c 00 00  addiu  $12, $12, 0
+# MIPS32R6-NEXT:             R_MIPS_LO16 symbol
+# MIPS32R6-NEXT:  01 83 60 21  addu   $12, $12, $3
+# MIPS32R6-NEXT:  7d 8c 00 36  ll     $12, 0($12)
+
+# MIPSN32:        3c 0c 00 00  lui    $12, 0
+# MIPSN32-NEXT:              R_MIPS_HI16  symbol
+# MIPSN32-NEXT:   01 83 60 21  addu   $12, $12, $3
+# MIPSN32-NEXT:   c1 8c 00 00  ll     $12, 0($12)
+# MIPSN32-NEXT:              R_MIPS_LO16  symbol
+
+# MIPSN32R6:      3c 0c 00 00  aui    $12, $zero, 0
+# MIPSN32R6-NEXT:            R_MIPS_HI16 symbol
+# MIPSN32R6-NEXT: 25 8c 00 00  addiu  $12, $12, 0
+# MIPSN32R6-NEXT:            R_MIPS_LO16 symbol
+# MIPSN32R6-NEXT: 01 83 60 21  addu   $12, $12, $3
+# MIPSN32R6-NEXT: 7d 8c 00 36  ll     $12, 0($12)
+
+# MIPS64:         3c 0c 00 00  lui    $12, 0
+# MIPS64-NEXT:               R_MIPS_HIGHEST/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64-NEXT:    65 8c 00 00  daddiu $12, $12, 0
+# MIPS64-NEXT:               R_MIPS_HIGHER/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64-NEXT:    00 0c 64 38  dsll   $12, $12, 16
+# MIPS64-NEXT:    65 8c 00 00  daddiu $12, $12, 0
+# MIPS64-NEXT:               R_MIPS_HI16/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64-NEXT:    00 0c 64 38  dsll   $12, $12, 16
+# MIPS64-NEXT:    01 83 60 2d  daddu  $12, $12, $3
+# MIPS64-NEXT:    c1 8c 00 00  ll     $12, 0($12)
+# MIPS64-NEXT:               R_MIPS_LO16/R_MIPS_NONE/R_MIPS_NONE  symbol
+
+# MIPS64R6:       3c 0c 00 00  aui    $12, $zero, 0
+# MIPS64R6-NEXT:             R_MIPS_HIGHEST/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64R6-NEXT:  3c 01 00 00  aui    $1, $zero, 0
+# MIPS64R6-NEXT:             R_MIPS_HI16/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64R6-NEXT:  65 8c 00 00  daddiu $12, $12, 0
+# MIPS64R6-NEXT:             R_MIPS_HIGHER/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64R6-NEXT:  64 21 00 00  daddiu $1, $1, 0
+# MIPS64R6-NEXT:             R_MIPS_LO16/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64R6-NEXT:  00 0c 60 3c  dsll32 $12, $12, 0
+# MIPS64R6-NEXT:  01 81 60 2d  daddu  $12, $12, $1
+# MIPS64R6-NEXT:  01 83 60 2d  daddu  $12, $12, $3
+# MIPS64R6-NEXT:  7d 8c 00 36  ll     $12, 0($12)
+
+ll $12, symbol+8
+# MIPS32:         3c 0c 00 00  lui    $12, 0
+# MIPS32-NEXT:               R_MIPS_HI16  symbol
+# MIPS32-NEXT:    c1 8c 00 08  ll     $12, 8($12)
+# MIPS32-NEXT:               R_MIPS_LO16  symbol
+
+# MIPS32R6:       3c 0c 00 00  aui    $12, $zero, 0
+# MIPS32R6-NEXT:             R_MIPS_HI16 symbol
+# MIPS32R6-NEXT:  25 8c 00 08  addiu  $12, $12, 8
+# MIPS32R6-NEXT:             R_MIPS_LO16 symbol
+# MIPS32R6-NEXT:  7d 8c 00 36  ll     $12, 0($12)
+
+# MIPSN32:        3c 0c 00 00  lui    $12, 0
+# MIPSN32-NEXT:              R_MIPS_HI16  symbol+0x8
+# MIPSN32-NEXT:   c1 8c 00 00  ll     $12, 0($12)
+# MIPSN32-NEXT:              R_MIPS_LO16  symbol+0x8
+
+# MIPSN32R6:      3c 0c 00 00  aui    $12, $zero, 0
+# MIPSN32R6-NEXT:            R_MIPS_HI16 symbol+0x8
+# MIPSN32R6-NEXT: 25 8c 00 00  addiu  $12, $12, 0
+# MIPSN32R6-NEXT:            R_MIPS_LO16 symbol+0x8
+# MIPSN32R6-NEXT: 7d 8c 00 36  ll     $12, 0($12)
+
+# MIPS64:         3c 0c 00 00  lui    $12, 0
+# MIPS64-NEXT:               R_MIPS_HIGHEST/R_MIPS_NONE/R_MIPS_NONE  symbol+0x8
+# MIPS64-NEXT:    65 8c 00 00  daddiu $12, $12, 0
+# MIPS64-NEXT:               R_MIPS_HIGHER/R_MIPS_NONE/R_MIPS_NONE  symbol+0x8
+# MIPS64-NEXT:    00 0c 64 38  dsll   $12, $12, 16
+# MIPS64-NEXT:    65 8c 00 00  daddiu $12, $12, 0
+# MIPS64-NEXT:               R_MIPS_HI16/R_MIPS_NONE/R_MIPS_NONE  symbol+0x8
+# MIPS64-NEXT:    00 0c 64 38  dsll   $12, $12, 16
+# MIPS64-NEXT:    c1 8c 00 00  ll     $12, 0($12)
+# MIPS64-NEXT:               R_MIPS_LO16/R_MIPS_NONE/R_MIPS_NONE  symbol+0x8
+
+# MIPS64R6:       3c 0c 00 00  aui    $12, $zero, 0
+# MIPS64R6-NEXT:             R_MIPS_HIGHEST/R_MIPS_NONE/R_MIPS_NONE  symbol+0x8
+# MIPS64R6-NEXT:  3c 01 00 00  aui    $1, $zero, 0
+# MIPS64R6-NEXT:             R_MIPS_HI16/R_MIPS_NONE/R_MIPS_NONE  symbol+0x8
+# MIPS64R6-NEXT:  65 8c 00 00  daddiu $12, $12, 0
+# MIPS64R6-NEXT:             R_MIPS_HIGHER/R_MIPS_NONE/R_MIPS_NONE  symbol+0x8
+# MIPS64R6-NEXT:  64 21 00 00  daddiu $1, $1, 0
+# MIPS64R6-NEXT:             R_MIPS_LO16/R_MIPS_NONE/R_MIPS_NONE  symbol+0x8
+# MIPS64R6-NEXT:  00 0c 60 3c  dsll32 $12, $12, 0
+# MIPS64R6-NEXT:  01 81 60 2d  daddu  $12, $12, $1
+# MIPS64R6-NEXT:  7d 8c 00 36  ll     $12, 0($12)
+
+.option pic2
+
+ll $12, symbol
+# MIPS32:         8f 8c 00 00  lw     $12, 0($gp)
+# MIPS32-NEXT:               R_MIPS_GOT16 symbol
+# MIPS32-NEXT:    c1 8c 00 00  ll     $12, 0($12)
+
+# MIPS32R6:       8f 8c 00 00  lw     $12, 0($gp)
+# MIPS32R6-NEXT:             R_MIPS_GOT16 symbol
+# MIPS32R6-NEXT:  7d 8c 00 36  ll     $12, 0($12)
+
+# MIPSN32:        8f 8c 00 00  lw     $12, 0($gp)
+# MIPSN32-NEXT:              R_MIPS_GOT_DISP symbol
+# MIPSN32-NEXT:   c1 8c 00 00  ll     $12, 0($12)
+
+# MIPSN32R6:      8f 8c 00 00  lw     $12, 0($gp)
+# MIPSN32R6-NEXT:            R_MIPS_GOT_DISP symbol
+# MIPSN32R6-NEXT: 7d 8c 00 36  ll     $12, 0($12)
+
+# MIPS64:         df 8c 00 00  ld     $12, 0($gp)
+# MIPS64-NEXT:               R_MIPS_GOT_DISP/R_MIPS_NONE/R_MIPS_NONE symbol
+# MIPS64-NEXT:    c1 8c 00 00  ll     $12, 0($12)
+
+# MIPS64R6:       df 8c 00 00  ld     $12, 0($gp)
+# MIPS64R6-NEXT:             R_MIPS_GOT_DISP/R_MIPS_NONE/R_MIPS_NONE symbol
+# MIPS64R6-NEXT:  7d 8c 00 36  ll     $12, 0($12)
+
+ll $12, symbol+8
+# MIPS32:         8f 8c 00 00  lw     $12, 0($gp)
+# MIPS32-NEXT:               R_MIPS_GOT16 symbol
+# MIPS32-NEXT:    c1 8c 00 08  ll     $12, 8($12)
+
+# MIPS32R6:       8f 8c 00 00  lw     $12, 0($gp)
+# MIPS32R6-NEXT:             R_MIPS_GOT16 symbol
+# MIPS32R6-NEXT:  25 8c 00 08  addiu  $12, $12, 8
+# MIPS32R6-NEXT:  7d 8c 00 36  ll     $12, 0($12)
+
+# MIPSN32:        8f 8c 00 00  lw     $12, 0($gp)
+# MIPSN32-NEXT:              R_MIPS_GOT_DISP symbol
+# MIPSN32-NEXT:   c1 8c 00 08  ll     $12, 8($12)
+
+# MIPSN32R6:      8f 8c 00 00  lw     $12, 0($gp)
+# MIPSN32R6-NEXT:            R_MIPS_GOT_DISP symbol
+# MIPSN32R6-NEXT: 25 8c 00 08  addiu  $12, $12, 8
+# MIPSN32R6-NEXT: 7d 8c 00 36  ll     $12, 0($12)
+
+# MIPS64:         df 8c 00 00  ld     $12, 0($gp)
+# MIPS64-NEXT:               R_MIPS_GOT_DISP/R_MIPS_NONE/R_MIPS_NONE symbol
+# MIPS64-NEXT:    c1 8c 00 08  ll     $12, 8($12)
+
+# MIPS64R6:       df 8c 00 00  ld     $12, 0($gp)
+# MIPS64R6-NEXT:             R_MIPS_GOT_DISP/R_MIPS_NONE/R_MIPS_NONE symbol
+# MIPS64R6-NEXT:  65 8c 00 08  daddiu $12, $12, 8
+# MIPS64R6-NEXT:  7d 8c 00 36  ll     $12, 0($12)

llvm/test/MC/Mips/lld-expansion.s

+# RUN: llvm-mc -filetype=obj -triple mips64 -mcpu=mips64 %s -o - \
+# RUN:   | llvm-objdump -d -r - | FileCheck %s --check-prefix=MIPS64
+# RUN: llvm-mc -filetype=obj -triple mips64 -mcpu=mips64r6 %s -o - \
+# RUN:   | llvm-objdump -d -r - | FileCheck %s --check-prefix=MIPS64R6
+
+lld $2, 128($sp)
+# MIPS64:         d3 a2 00 80  lld    $2, 128($sp)
+# MIPS64R6:       7f a2 40 37  lld    $2, 128($sp)
+
+lld $2, -128($sp)
+# MIPS64:         d3 a2 ff 80  lld    $2, -128($sp)
+# MIPS64R6:       7f a2 c0 37  lld    $2, -128($sp)
+
+lld $2, 256($sp)
+# MIPS64:         d3 a2 01 00  lld    $2, 256($sp)
+
+# MIPS64R6:       67 a2 01 00  daddiu $2, $sp, 256
+# MIPS64R6-NEXT:  7c 42 00 37  lld    $2, 0($2)
+
+lld $2, -257($sp)
+# MIPS64:         d3 a2 fe ff  lld    $2, -257($sp)
+
+# MIPS64R6:       67 a2 fe ff  daddiu $2, $sp, -257
+# MIPS64R6-NEXT:  7c 42 00 37  lld    $2, 0($2)
+
+lld $2, 32767($sp)
+# MIPS64:         d3 a2 7f ff  lld    $2, 32767($sp)
+
+# MIPS64R6:       67 a2 7f ff  daddiu $2, $sp, 32767
+# MIPS64R6-NEXT:  7c 42 00 37  lld    $2, 0($2)
+
+lld $2, 32768($sp)
+# MIPS64:         3c 02 00 01  lui    $2, 1
+# MIPS64-NEXT:    00 5d 10 2d  daddu  $2, $2, $sp
+# MIPS64-NEXT:    d0 42 80 00  lld    $2, -32768($2)
+
+# MIPS64R6:       34 02 80 00  ori    $2, $zero, 32768
+# MIPS64R6-NEXT:  00 5d 10 2d  daddu  $2, $2, $sp
+# MIPS64R6-NEXT:  7c 42 00 37  lld    $2, 0($2)
+
+lld $2, -32768($sp)
+# MIPS64:         d3 a2 80 00  lld    $2, -32768($sp)
+
+# MIPS64R6:       67 a2 80 00  daddiu $2, $sp, -32768
+# MIPS64R6-NEXT:  7c 42 00 37  lld    $2, 0($2)
+
+lld $2, -32769($sp)
+# MIPS64:         3c 02 ff ff  lui    $2, 65535
+# MIPS64-NEXT:    00 5d 10 2d  daddu  $2, $2, $sp
+# MIPS64-NEXT:    d0 42 7f ff  lld    $2, 32767($2)
+
+# MIPS64R6:       3c 02 ff ff  aui    $2, $zero, 65535
+# MIPS64R6-NEXT:  34 42 7f ff  ori    $2, $2, 32767
+# MIPS64R6-NEXT:  00 5d 10 2d  daddu  $2, $2, $sp
+# MIPS64R6-NEXT:  7c 42 00 37  lld    $2, 0($2)
+
+lld $2, 2147483648($sp)
+# MIPS64:         34 02 80 00  ori    $2, $zero, 32768
+# MIPS64-NEXT:    00 02 14 38  dsll   $2, $2, 16
+# MIPS64-NEXT:    00 5d 10 2d  daddu  $2, $2, $sp
+# MIPS64-NEXT:    d0 42 00 00  lld    $2, 0($2)
+
+# MIPS64R6:       34 02 80 00  ori    $2, $zero, 32768
+# MIPS64R6-NEXT:  00 02 14 38  dsll   $2, $2, 16
+# MIPS64R6-NEXT:  00 5d 10 2d  daddu  $2, $2, $sp
+# MIPS64R6-NEXT:  7c 42 00 37  lld    $2, 0($2)
+
+lld $2, -2147483648($sp)
+# MIPS64:         3c 02 80 00  lui    $2, 32768
+# MIPS64-NEXT:    00 5d 10 2d  daddu  $2, $2, $sp
+# MIPS64-NEXT:    d0 42 00 00  lld    $2, 0($2)
+
+# MIPS64R6:       3c 02 80 00  aui    $2, $zero, 32768
+# MIPS64R6-NEXT:  00 5d 10 2d  daddu  $2, $2, $sp
+# MIPS64R6-NEXT:  7c 42 00 37  lld    $2, 0($2)
+
+lld $2, 9223372036853775808($sp)
+# MIPS64:         3c 02 7f ff  lui    $2, 32767
+# MIPS64-NEXT:    34 42 ff ff  ori    $2, $2, 65535
+# MIPS64-NEXT:    00 02 14 38  dsll   $2, $2, 16
+# MIPS64-NEXT:    34 42 ff f1  ori    $2, $2, 65521
+# MIPS64-NEXT:    00 02 14 38  dsll   $2, $2, 16
+# MIPS64-NEXT:    00 5d 10 2d  daddu  $2, $2, $sp
+# MIPS64-NEXT:    d0 42 bd c0  lld    $2, -16960($2)
+
+# MIPS64R6:       3c 02 7f ff  aui    $2, $zero, 32767
+# MIPS64R6-NEXT:  34 42 ff ff  ori    $2, $2, 65535
+# MIPS64R6-NEXT:  00 02 14 38  dsll   $2, $2, 16
+# MIPS64R6-NEXT:  34 42 ff f0  ori    $2, $2, 65520
+# MIPS64R6-NEXT:  00 02 14 38  dsll   $2, $2, 16
+# MIPS64R6-NEXT:  34 42 bd c0  ori    $2, $2, 48576
+# MIPS64R6-NEXT:  00 5d 10 2d  daddu  $2, $2, $sp
+# MIPS64R6-NEXT:  7c 42 00 37  lld    $2, 0($2)
+
+lld $12, symbol
+# MIPS64:         3c 0c 00 00  lui    $12, 0
+# MIPS64-NEXT:               R_MIPS_HIGHEST/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64-NEXT:    65 8c 00 00  daddiu $12, $12, 0
+# MIPS64-NEXT:               R_MIPS_HIGHER/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64-NEXT:    00 0c 64 38  dsll   $12, $12, 16
+# MIPS64-NEXT:    65 8c 00 00  daddiu $12, $12, 0
+# MIPS64-NEXT:               R_MIPS_HI16/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64-NEXT:    00 0c 64 38  dsll   $12, $12, 16
+# MIPS64-NEXT:    d1 8c 00 00  lld    $12, 0($12)
+# MIPS64-NEXT:               R_MIPS_LO16/R_MIPS_NONE/R_MIPS_NONE  symbol
+
+# MIPS64R6:       3c 0c 00 00  aui    $12, $zero, 0
+# MIPS64R6-NEXT:             R_MIPS_HIGHEST/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64R6-NEXT:  3c 01 00 00  aui    $1, $zero, 0
+# MIPS64R6-NEXT:             R_MIPS_HI16/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64R6-NEXT:  65 8c 00 00  daddiu $12, $12, 0
+# MIPS64R6-NEXT:             R_MIPS_HIGHER/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64R6-NEXT:  64 21 00 00  daddiu $1, $1, 0
+# MIPS64R6-NEXT:             R_MIPS_LO16/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64R6-NEXT:  00 0c 60 3c  dsll32 $12, $12, 0
+# MIPS64R6-NEXT:  01 81 60 2d  daddu  $12, $12, $1
+# MIPS64R6-NEXT:  7d 8c 00 37  lld    $12, 0($12)
+
+lld $12, symbol($3)
+# MIPS64:         3c 0c 00 00  lui    $12, 0
+# MIPS64-NEXT:               R_MIPS_HIGHEST/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64-NEXT:    65 8c 00 00  daddiu $12, $12, 0
+# MIPS64-NEXT:               R_MIPS_HIGHER/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64-NEXT:    00 0c 64 38  dsll   $12, $12, 16
+# MIPS64-NEXT:    65 8c 00 00  daddiu $12, $12, 0
+# MIPS64-NEXT:               R_MIPS_HI16/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64-NEXT:    00 0c 64 38  dsll   $12, $12, 16
+# MIPS64-NEXT:    01 83 60 2d  daddu  $12, $12, $3
+# MIPS64-NEXT:    d1 8c 00 00  lld    $12, 0($12)
+# MIPS64-NEXT:               R_MIPS_LO16/R_MIPS_NONE/R_MIPS_NONE  symbol
+
+# MIPS64R6-NEXT:  3c 0c 00 00  aui    $12, $zero, 0
+# MIPS64R6-NEXT:             R_MIPS_HIGHEST/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64R6-NEXT:  3c 01 00 00  aui    $1, $zero, 0
+# MIPS64R6-NEXT:             R_MIPS_HI16/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64R6-NEXT:  65 8c 00 00  daddiu $12, $12, 0
+# MIPS64R6-NEXT:             R_MIPS_HIGHER/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64R6-NEXT:  64 21 00 00  daddiu $1, $1, 0
+# MIPS64R6-NEXT:             R_MIPS_LO16/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64R6-NEXT:  00 0c 60 3c  dsll32 $12, $12, 0
+# MIPS64R6-NEXT:  01 81 60 2d  daddu  $12, $12, $1
+# MIPS64R6-NEXT:  01 83 60 2d  daddu  $12, $12, $3
+# MIPS64R6-NEXT:  7d 8c 00 37  lld    $12, 0($12)
+
+lld $12, symbol+8
+# MIPS64:         3c 0c 00 00  lui    $12, 0
+# MIPS64-NEXT:               R_MIPS_HIGHEST/R_MIPS_NONE/R_MIPS_NONE  symbol+0x8
+# MIPS64-NEXT:    65 8c 00 00  daddiu $12, $12, 0
+# MIPS64-NEXT:               R_MIPS_HIGHER/R_MIPS_NONE/R_MIPS_NONE  symbol+0x8
+# MIPS64-NEXT:    00 0c 64 38  dsll   $12, $12, 16
+# MIPS64-NEXT:    65 8c 00 00  daddiu $12, $12, 0
+# MIPS64-NEXT:               R_MIPS_HI16/R_MIPS_NONE/R_MIPS_NONE  symbol+0x8
+# MIPS64-NEXT:    00 0c 64 38  dsll   $12, $12, 16
+# MIPS64-NEXT:    d1 8c 00 00  lld    $12, 0($12)
+# MIPS64-NEXT:               R_MIPS_LO16/R_MIPS_NONE/R_MIPS_NONE  symbol+0x8
+
+# MIPS64R6-NEXT:  3c 0c 00 00  aui    $12, $zero, 0
+# MIPS64R6-NEXT:             R_MIPS_HIGHEST/R_MIPS_NONE/R_MIPS_NONE  symbol+0x8
+# MIPS64R6-NEXT:  3c 01 00 00  aui    $1, $zero, 0
+# MIPS64R6-NEXT:             R_MIPS_HI16/R_MIPS_NONE/R_MIPS_NONE  symbol+0x8
+# MIPS64R6-NEXT:  65 8c 00 00  daddiu $12, $12, 0
+# MIPS64R6-NEXT:             R_MIPS_HIGHER/R_MIPS_NONE/R_MIPS_NONE  symbol+0x8
+# MIPS64R6-NEXT:  64 21 00 00  daddiu $1, $1, 0
+# MIPS64R6-NEXT:             R_MIPS_LO16/R_MIPS_NONE/R_MIPS_NONE  symbol+0x8
+# MIPS64R6-NEXT:  00 0c 60 3c  dsll32 $12, $12, 0
+# MIPS64R6-NEXT:  01 81 60 2d  daddu  $12, $12, $1
+# MIPS64R6-NEXT:  7d 8c 00 37  lld    $12, 0($12)
+
+.option pic2
+
+lld $12, symbol
+# MIPS64:         df 8c 00 00  ld     $12, 0($gp)
+# MIPS64-NEXT:               R_MIPS_GOT_DISP/R_MIPS_NONE/R_MIPS_NONE symbol
+# MIPS64-NEXT:    d1 8c 00 00  lld    $12, 0($12)
+
+# MIPS64R6:       df 8c 00 00  ld     $12, 0($gp)
+# MIPS64R6-NEXT:             R_MIPS_GOT_DISP/R_MIPS_NONE/R_MIPS_NONE symbol
+# MIPS64R6-NEXT:  7d 8c 00 37  lld    $12, 0($12)
+
+lld $12, symbol+8
+# MIPS64:         df 8c 00 00  ld     $12, 0($gp)
+# MIPS64-NEXT:               R_MIPS_GOT_DISP/R_MIPS_NONE/R_MIPS_NONE symbol
+# MIPS64-NEXT:    d1 8c 00 08  lld    $12, 8($12)
+
+# MIPS64R6:       df 8c 00 00  ld     $12, 0($gp)
+# MIPS64R6-NEXT:             R_MIPS_GOT_DISP/R_MIPS_NONE/R_MIPS_NONE symbol
+# MIPS64R6-NEXT:  65 8c 00 08  daddiu $12, $12, 8
+# MIPS64R6-NEXT:  7d 8c 00 37  lld    $12, 0($12)

llvm/test/MC/Mips/sc-expansion.s

 # RUN: llvm-mc -filetype=obj -triple mips -mcpu=mips2 %s -o - \
-# RUN:   | llvm-objdump -d -r - | FileCheck %s --check-prefix=MIPS
+# RUN:   | llvm-objdump -d -r - | FileCheck %s --check-prefix=MIPS32
 # RUN: llvm-mc -filetype=obj -triple mips -mcpu=mips32 %s -o - \
-# RUN:   | llvm-objdump -d -r - | FileCheck %s --check-prefix=MIPS
+# RUN:   | llvm-objdump -d -r - | FileCheck %s --check-prefix=MIPS32
 # RUN: llvm-mc -filetype=obj -triple mips -mcpu=mips32r2 %s -o - \
-# RUN:   | llvm-objdump -d -r - | FileCheck %s --check-prefix=MIPS
-# RUN: llvm-mc -filetype=obj -triple mips -mcpu=mips3 %s -o - \
-# RUN:   | llvm-objdump -d -r - | FileCheck %s --check-prefix=MIPS
-# RUN: llvm-mc -filetype=obj -triple mips -mcpu=mips64 %s -o - \
-# RUN:   | llvm-objdump -d -r - | FileCheck %s --check-prefix=MIPS
-# RUN: llvm-mc -filetype=obj -triple mips -mcpu=mips64r2 %s -o - \
-# RUN:   | llvm-objdump -d -r - | FileCheck %s --check-prefix=MIPS
+# RUN:   | llvm-objdump -d -r - | FileCheck %s --check-prefix=MIPS32
+# RUN: llvm-mc -filetype=obj -triple mipsn32 -mcpu=mips3 %s -o - \
+# RUN:   | llvm-objdump -d -r - | FileCheck %s --check-prefix=MIPSN32
+# RUN: llvm-mc -filetype=obj -triple mipsn32 -mcpu=mips64r6 %s -o - \
+# RUN:   | llvm-objdump -d -r - | FileCheck %s --check-prefix=MIPSN32R6
+# RUN: llvm-mc -filetype=obj -triple mips64 -mcpu=mips64 %s -o - \
+# RUN:   | llvm-objdump -d -r - | FileCheck %s --check-prefix=MIPS64
+# RUN: llvm-mc -filetype=obj -triple mips64 -mcpu=mips64r2 %s -o - \
+# RUN:   | llvm-objdump -d -r - | FileCheck %s --check-prefix=MIPS64
 # RUN: llvm-mc -filetype=obj -triple mips -mcpu=mips32r6 %s -o - \
-# RUN:   | llvm-objdump -d -r - | FileCheck %s --check-prefix=MIPSR6
-# RUN: llvm-mc -filetype=obj -triple mips -mcpu=mips64r6 %s -o - \
-# RUN:   | llvm-objdump -d -r - | FileCheck %s --check-prefix=MIPSR6
-
-# MIPS:         e0 6c 00 00    sc   $12, 0($3)
-# MIPSR6:       7c 6c 00 26    sc   $12, 0($3)
-sc $12, 0($3)
-
-# MIPS:         e0 6c 00 04    sc   $12, 4($3)
-# MIPSR6:       7c 6c 02 26    sc   $12, 4($3)
-sc $12, 4($3)
-
-# MIPS:         3c 01 00 00    lui  $1, 0
-# MIPS:                    R_MIPS_HI16  symbol
-# MIPS:         e0 2c 00 00    sc   $12, 0($1)
-# MIPS:                    R_MIPS_LO16  symbol
-
-# MIPSR6:       3c 01 00 00     aui    $1, $zero, 0
-# MIPSR6:                  R_MIPS_HI16  symbol
-# MIPSR6:       24 21 00 00     addiu  $1, $1, 0
-# MIPSR6:                  R_MIPS_LO16  symbol
-# MIPSR6:       7c 2c 00 26     sc     $12, 0($1)
+# RUN:   | llvm-objdump -d -r - | FileCheck %s --check-prefix=MIPS32R6
+# RUN: llvm-mc -filetype=obj -triple mips64 -mcpu=mips64r6 %s -o - \
+# RUN:   | llvm-objdump -d -r - | FileCheck %s --check-prefix=MIPS64R6
+
+sc $2, 128($sp)
+# MIPS32:         e3 a2 00 80  sc     $2, 128($sp)
+# MIPS32R6:       7f a2 40 26  sc     $2, 128($sp)
+# MIPSN32:        e3 a2 00 80  sc     $2, 128($sp)
+# MIPSN32R6:      7f a2 40 26  sc     $2, 128($sp)
+# MIPS64:         e3 a2 00 80  sc     $2, 128($sp)
+# MIPS64R6:       7f a2 40 26  sc     $2, 128($sp)
+
+sc $2, -128($sp)
+# MIPS32:         e3 a2 ff 80  sc     $2, -128($sp)
+# MIPS32R6:       7f a2 c0 26  sc     $2, -128($sp)
+# MIPSN32:        e3 a2 ff 80  sc     $2, -128($sp)
+# MIPSN32R6:      7f a2 c0 26  sc     $2, -128($sp)
+# MIPS64:         e3 a2 ff 80  sc     $2, -128($sp)
+# MIPS64R6:       7f a2 c0 26  sc     $2, -128($sp)
+
+sc $2, 256($sp)
+# MIPS32:         e3 a2 01 00  sc     $2, 256($sp)
+
+# MIPS32R6:       27 a1 01 00  addiu  $1, $sp, 256
+# MIPS32R6-NEXT:  7c 22 00 26  sc     $2, 0($1)
+
+# MIPSN32:        e3 a2 01 00  sc     $2, 256($sp)
+
+# MIPSN32R6:      27 a1 01 00  addiu  $1, $sp, 256
+# MIPSN32R6-NEXT: 7c 22 00 26  sc     $2, 0($1)
+
+# MIPS64:         e3 a2 01 00  sc     $2, 256($sp)
+
+# MIPS64R6:       67 a1 01 00  daddiu $1, $sp, 256
+# MIPS64R6-NEXT:  7c 22 00 26  sc     $2, 0($1)
+
+sc $2, -257($sp)
+# MIPS32:         e3 a2 fe ff  sc     $2, -257($sp)
+
+# MIPS32R6:       27 a1 fe ff  addiu  $1, $sp, -257
+# MIPS32R6-NEXT:  7c 22 00 26  sc     $2, 0($1)
+
+# MIPSN32:        e3 a2 fe ff  sc     $2, -257($sp)
+
+# MIPSN32R6:      27 a1 fe ff  addiu  $1, $sp, -257
+# MIPSN32R6-NEXT: 7c 22 00 26  sc     $2, 0($1)
+
+# MIPS64:         e3 a2 fe ff  sc     $2, -257($sp)
+
+# MIPS64R6:       67 a1 fe ff  daddiu $1, $sp, -257
+# MIPS64R6-NEXT:  7c 22 00 26  sc     $2, 0($1)
+
+sc $2, 32767($sp)
+# MIPS32:         e3 a2 7f ff  sc     $2, 32767($sp)
+
+# MIPS32R6:       27 a1 7f ff  addiu  $1, $sp, 32767
+# MIPS32R6-NEXT:  7c 22 00 26  sc     $2, 0($1)
+
+# MIPSN32:        e3 a2 7f ff  sc     $2, 32767($sp)
+
+# MIPSN32R6:      27 a1 7f ff  addiu  $1, $sp, 32767
+# MIPSN32R6-NEXT: 7c 22 00 26  sc     $2, 0($1)
+
+# MIPS64:         e3 a2 7f ff  sc     $2, 32767($sp)
+
+# MIPS64R6:       67 a1 7f ff  daddiu $1, $sp, 32767
+# MIPS64R6-NEXT:  7c 22 00 26  sc     $2, 0($1)
+
+sc $2, 32768($sp)
+# MIPS32:         3c 01 00 01  lui    $1, 1
+# MIPS32-NEXT:    00 3d 08 21  addu   $1, $1, $sp
+# MIPS32-NEXT:    e0 22 80 00  sc     $2, -32768($1)
+
+# MIPS32R6:       34 01 80 00  ori    $1, $zero, 32768
+# MIPS32R6-NEXT:  00 3d 08 21  addu   $1, $1, $sp
+# MIPS32R6-NEXT:  7c 22 00 26  sc     $2, 0($1)
+
+# MIPSN32:        3c 01 00 01  lui    $1, 1
+# MIPSN32-NEXT:   00 3d 08 21  addu   $1, $1, $sp
+# MIPSN32-NEXT:   e0 22 80 00  sc     $2, -32768($1)
+
+# MIPSN32R6:      34 01 80 00  ori    $1, $zero, 32768
+# MIPSN32R6-NEXT: 00 3d 08 21  addu   $1, $1, $sp
+# MIPSN32R6-NEXT: 7c 22 00 26  sc     $2, 0($1)
+
+# MIPS64:         3c 01 00 01  lui    $1, 1
+# MIPS64-NEXT:    00 3d 08 2d  daddu  $1, $1, $sp
+# MIPS64-NEXT:    e0 22 80 00  sc     $2, -32768($1)
+
+# MIPS64R6:       34 01 80 00  ori    $1, $zero, 32768
+# MIPS64R6-NEXT:  00 3d 08 2d  daddu  $1, $1, $sp
+# MIPS64R6-NEXT:  7c 22 00 26  sc     $2, 0($1)
+
+sc $2, -32768($sp)
+# MIPS32:         e3 a2 80 00  sc     $2, -32768($sp)
+
+# MIPS32R6:       27 a1 80 00  addiu  $1, $sp, -32768
+# MIPS32R6-NEXT:  7c 22 00 26  sc     $2, 0($1)
+
+# MIPSN32:        e3 a2 80 00  sc     $2, -32768($sp)
+
+# MIPSN32R6:      27 a1 80 00  addiu  $1, $sp, -32768
+# MIPSN32R6-NEXT: 7c 22 00 26  sc     $2, 0($1)
+
+# MIPS64:         e3 a2 80 00  sc     $2, -32768($sp)
+
+# MIPS64R6:       67 a1 80 00  daddiu $1, $sp, -32768
+# MIPS64R6-NEXT:  7c 22 00 26  sc     $2, 0($1)
+
+sc $2, -32769($sp)
+# MIPS32:         3c 01 ff ff  lui    $1, 65535
+# MIPS32-NEXT:    00 3d 08 21  addu   $1, $1, $sp
+# MIPS32-NEXT:    e0 22 7f ff  sc     $2, 32767($1)
+
+# MIPS32R6:       3c 01 ff ff  aui    $1, $zero, 65535
+# MIPS32R6-NEXT:  34 21 7f ff  ori    $1, $1, 32767
+# MIPS32R6-NEXT:  00 3d 08 21  addu   $1, $1, $sp
+# MIPS32R6-NEXT:  7c 22 00 26  sc     $2, 0($1)
+
+# MIPSN32:        3c 01 ff ff  lui    $1, 65535
+# MIPSN32-NEXT:   00 3d 08 21  addu   $1, $1, $sp
+# MIPSN32-NEXT:   e0 22 7f ff  sc     $2, 32767($1)
+
+# MIPSN32R6:      3c 01 ff ff  aui    $1, $zero, 65535
+# MIPSN32R6-NEXT: 34 21 7f ff  ori    $1, $1, 32767
+# MIPSN32R6-NEXT: 00 3d 08 21  addu   $1, $1, $sp
+# MIPSN32R6-NEXT: 7c 22 00 26  sc     $2, 0($1)
+
+# MIPS64:         3c 01 ff ff  lui    $1, 65535
+# MIPS64-NEXT:    00 3d 08 2d  daddu  $1, $1, $sp
+# MIPS64-NEXT:    e0 22 7f ff  sc     $2, 32767($1)
+
+# MIPS64R6:       3c 01 ff ff  aui    $1, $zero, 65535
+# MIPS64R6-NEXT:  34 21 7f ff  ori    $1, $1, 32767
+# MIPS64R6-NEXT:  00 3d 08 2d  daddu  $1, $1, $sp
+# MIPS64R6-NEXT:  7c 22 00 26  sc     $2, 0($1)
+
+sc $2, 655987($sp)
+# MIPS32:         3c 01 00 0a  lui    $1, 10
+# MIPS32-NEXT:    00 3d 08 21  addu   $1, $1, $sp
+# MIPS32-NEXT:    e0 22 02 73  sc     $2, 627($1)
+
+# MIPS32R6:       3c 01 00 0a  aui    $1, $zero, 10
+# MIPS32R6-NEXT:  34 21 02 73  ori    $1, $1, 627
+# MIPS32R6-NEXT:  00 3d 08 21  addu   $1, $1, $sp
+# MIPS32R6-NEXT:  7c 22 00 26  sc     $2, 0($1)
+
+# MIPSN32:        3c 01 00 0a  lui    $1, 10
+# MIPSN32-NEXT:   00 3d 08 21  addu   $1, $1, $sp
+# MIPSN32-NEXT:   e0 22 02 73  sc     $2, 627($1)
+
+# MIPSN32R6:      3c 01 00 0a  aui    $1, $zero, 10
+# MIPSN32R6-NEXT: 34 21 02 73  ori    $1, $1, 627
+# MIPSN32R6-NEXT: 00 3d 08 21  addu   $1, $1, $sp
+# MIPSN32R6-NEXT: 7c 22 00 26  sc     $2, 0($1)
+
+# MIPS64:         3c 01 00 0a  lui    $1, 10
+# MIPS64-NEXT:    00 3d 08 2d  daddu  $1, $1, $sp
+# MIPS64-NEXT:    e0 22 02 73  sc     $2, 627($1)
+
+# MIPS64R6:       3c 01 00 0a  aui    $1, $zero, 10
+# MIPS64R6-NEXT:  34 21 02 73  ori    $1, $1, 627
+# MIPS64R6-NEXT:  00 3d 08 2d  daddu  $1, $1, $sp
+# MIPS64R6-NEXT:  7c 22 00 26  sc     $2, 0($1)
+
+sc $2, -655987($sp)
+# MIPS32:         3c 01 ff f6  lui    $1, 65526
+# MIPS32-NEXT:    00 3d 08 21  addu   $1, $1, $sp
+# MIPS32-NEXT:    e0 22 fd 8d  sc     $2, -627($1)
+
+# MIPS32R6:       3c 01 ff f5  aui    $1, $zero, 65525
+# MIPS32R6-NEXT:  34 21 fd 8d  ori    $1, $1, 64909
+# MIPS32R6-NEXT:  00 3d 08 21  addu   $1, $1, $sp
+# MIPS32R6-NEXT:  7c 22 00 26  sc     $2, 0($1)
+
+# MIPSN32:        3c 01 ff f6  lui    $1, 65526
+# MIPSN32-NEXT:   00 3d 08 21  addu   $1, $1, $sp
+# MIPSN32-NEXT:   e0 22 fd 8d  sc     $2, -627($1)
+
+# MIPSN32R6:      3c 01 ff f5  aui    $1, $zero, 65525
+# MIPSN32R6-NEXT: 34 21 fd 8d  ori    $1, $1, 64909
+# MIPSN32R6-NEXT: 00 3d 08 21  addu   $1, $1, $sp
+# MIPSN32R6-NEXT: 7c 22 00 26  sc     $2, 0($1)
+
+# MIPS64:         3c 01 ff f6  lui    $1, 65526
+# MIPS64-NEXT:    00 3d 08 2d  daddu  $1, $1, $sp
+# MIPS64-NEXT:    e0 22 fd 8d  sc     $2, -627($1)
+
+# MIPS64R6:       3c 01 ff f5  aui    $1, $zero, 65525
+# MIPS64R6-NEXT:  34 21 fd 8d  ori    $1, $1, 64909
+# MIPS64R6-NEXT:  00 3d 08 2d  daddu  $1, $1, $sp
+# MIPS64R6-NEXT:  7c 22 00 26  sc     $2, 0($1)
+
 sc $12, symbol
+# MIPS32:         3c 01 00 00  lui    $1, 0
+# MIPS32-NEXT:               R_MIPS_HI16  symbol
+# MIPS32-NEXT:    e0 2c 00 00  sc     $12, 0($1)
+# MIPS32-NEXT:               R_MIPS_LO16  symbol
+
+# MIPS32R6:       3c 01 00 00  aui    $1, $zero, 0
+# MIPS32R6-NEXT:             R_MIPS_HI16 symbol
+# MIPS32R6-NEXT:  24 21 00 00  addiu  $1, $1, 0
+# MIPS32R6-NEXT:             R_MIPS_LO16 symbol
+# MIPS32R6-NEXT:  7c 2c 00 26  sc     $12, 0($1)
+
+# MIPSN32:        3c 01 00 00  lui    $1, 0
+# MIPSN32-NEXT:              R_MIPS_HI16  symbol
+# MIPSN32-NEXT:   e0 2c 00 00  sc     $12, 0($1)
+# MIPSN32-NEXT:              R_MIPS_LO16  symbol
+
+# MIPSN32R6:      3c 01 00 00  aui    $1, $zero, 0
+# MIPSN32R6-NEXT:            R_MIPS_HI16 symbol
+# MIPSN32R6-NEXT: 24 21 00 00  addiu  $1, $1, 0
+# MIPSN32R6-NEXT:            R_MIPS_LO16 symbol
+# MIPSN32R6-NEXT: 7c 2c 00 26  sc     $12, 0($1)
+
+# MIPS64:         3c 01 00 00  lui    $1, 0
+# MIPS64-NEXT:               R_MIPS_HIGHEST/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64-NEXT:    64 21 00 00  daddiu $1, $1, 0
+# MIPS64-NEXT:               R_MIPS_HIGHER/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64-NEXT:    00 01 0c 38  dsll   $1, $1, 16
+# MIPS64-NEXT:    64 21 00 00  daddiu $1, $1, 0
+# MIPS64-NEXT:               R_MIPS_HI16/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64-NEXT:    00 01 0c 38  dsll   $1, $1, 16
+# MIPS64-NEXT:    e0 2c 00 00  sc     $12, 0($1)
+# MIPS64-NEXT:               R_MIPS_LO16/R_MIPS_NONE/R_MIPS_NONE  symbol
+
+# MIPS64R6:       3c 01 00 00  aui    $1, $zero, 0
+# MIPS64R6-NEXT:             R_MIPS_HIGHEST/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64R6-NEXT:  64 21 00 00  daddiu $1, $1, 0
+# MIPS64R6-NEXT:             R_MIPS_HIGHER/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64R6-NEXT:  00 01 0c 38  dsll   $1, $1, 16
+# MIPS64R6-NEXT:  64 21 00 00  daddiu $1, $1, 0
+# MIPS64R6-NEXT:             R_MIPS_HI16/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64R6-NEXT:  00 01 0c 38  dsll   $1, $1, 16
+# MIPS64R6-NEXT:  64 21 00 00  daddiu $1, $1, 0
+# MIPS64R6-NEXT:             R_MIPS_LO16/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64R6-NEXT:  7c 2c 00 26  sc     $12, 0($1)
+
+sc $12, symbol($3)
+# MIPS32:         3c 01 00 00  lui    $1, 0
+# MIPS32-NEXT:               R_MIPS_HI16  symbol
+# MIPS32-NEXT:    00 23 08 21  addu   $1, $1, $3
+# MIPS32-NEXT:    e0 2c 00 00  sc     $12, 0($1)
+# MIPS32-NEXT:               R_MIPS_LO16  symbol
+
+# MIPS32R6:       3c 01 00 00  aui    $1, $zero, 0
+# MIPS32R6-NEXT:             R_MIPS_HI16 symbol
+# MIPS32R6-NEXT:  24 21 00 00  addiu  $1, $1, 0
+# MIPS32R6-NEXT:             R_MIPS_LO16 symbol
+# MIPS32R6-NEXT:  00 23 08 21  addu   $1, $1, $3
+# MIPS32R6-NEXT:  7c 2c 00 26  sc     $12, 0($1)
+
+# MIPSN32:        3c 01 00 00  lui    $1, 0
+# MIPSN32-NEXT:              R_MIPS_HI16  symbol
+# MIPSN32-NEXT:   00 23 08 21  addu   $1, $1, $3
+# MIPSN32-NEXT:   e0 2c 00 00  sc     $12, 0($1)
+# MIPSN32-NEXT:              R_MIPS_LO16  symbol
+
+# MIPSN32R6:      3c 01 00 00  aui    $1, $zero, 0
+# MIPSN32R6-NEXT:            R_MIPS_HI16 symbol
+# MIPSN32R6-NEXT: 24 21 00 00  addiu  $1, $1, 0
+# MIPSN32R6-NEXT:            R_MIPS_LO16 symbol
+# MIPSN32R6-NEXT: 00 23 08 21  addu   $1, $1, $3
+# MIPSN32R6-NEXT: 7c 2c 00 26  sc     $12, 0($1)
+
+# MIPS64:         3c 01 00 00  lui    $1, 0
+# MIPS64-NEXT:               R_MIPS_HIGHEST/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64-NEXT:    64 21 00 00  daddiu $1, $1, 0
+# MIPS64-NEXT:               R_MIPS_HIGHER/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64-NEXT:    00 01 0c 38  dsll   $1, $1, 16
+# MIPS64-NEXT:    64 21 00 00  daddiu $1, $1, 0
+# MIPS64-NEXT:               R_MIPS_HI16/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64-NEXT:    00 01 0c 38  dsll   $1, $1, 16
+# MIPS64-NEXT:    00 23 08 2d  daddu  $1, $1, $3
+# MIPS64-NEXT:    e0 2c 00 00  sc     $12, 0($1)
+# MIPS64-NEXT:               R_MIPS_LO16/R_MIPS_NONE/R_MIPS_NONE  symbol
+
+# MIPS64R6:       3c 01 00 00  aui    $1, $zero, 0
+# MIPS64R6-NEXT:             R_MIPS_HIGHEST/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64R6-NEXT:  64 21 00 00  daddiu $1, $1, 0
+# MIPS64R6-NEXT:             R_MIPS_HIGHER/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64R6-NEXT:  00 01 0c 38  dsll   $1, $1, 16
+# MIPS64R6-NEXT:  64 21 00 00  daddiu $1, $1, 0
+# MIPS64R6-NEXT:             R_MIPS_HI16/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64R6-NEXT:  00 01 0c 38  dsll   $1, $1, 16
+# MIPS64R6-NEXT:  64 21 00 00  daddiu $1, $1, 0
+# MIPS64R6-NEXT:             R_MIPS_LO16/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64R6-NEXT:  00 23 08 2d  daddu  $1, $1, $3
+# MIPS64R6-NEXT:  7c 2c 00 26  sc     $12, 0($1)
 
-# MIPS:         3c 01 00 00    lui  $1, 0
-# MIPS:                    R_MIPS_HI16  symbol
-# MIPS:         e0 2c 00 08    sc   $12, 8($1)
-# MIPS:                    R_MIPS_LO16  symbol
-
-# MIPSR6:       3c 01 00 00     aui    $1, $zero, 0
-# MIPSR6:                  R_MIPS_HI16  symbol
-# MIPSR6:       24 21 00 08     addiu  $1, $1, 8
-# MIPSR6:                  R_MIPS_LO16  symbol
-# MIPSR6:       7c 2c 00 26     sc     $12, 0($1)
-sc $12, symbol + 8
+sc $12, symbol+8
+# MIPS32:         3c 01 00 00  lui    $1, 0
+# MIPS32-NEXT:               R_MIPS_HI16  symbol
+# MIPS32-NEXT:    e0 2c 00 08  sc     $12, 8($1)
+# MIPS32-NEXT:               R_MIPS_LO16  symbol
+
+# MIPS32R6:       3c 01 00 00  aui    $1, $zero, 0
+# MIPS32R6-NEXT:             R_MIPS_HI16 symbol
+# MIPS32R6-NEXT:  24 21 00 08  addiu  $1, $1, 8
+# MIPS32R6-NEXT:             R_MIPS_LO16 symbol
+# MIPS32R6-NEXT:  7c 2c 00 26  sc     $12, 0($1)
+
+# MIPSN32:        3c 01 00 00  lui    $1, 0
+# MIPSN32-NEXT:              R_MIPS_HI16  symbol+0x8
+# MIPSN32-NEXT:   e0 2c 00 00  sc     $12, 0($1)
+# MIPSN32-NEXT:              R_MIPS_LO16  symbol+0x8
+
+# MIPSN32R6:      3c 01 00 00  aui    $1, $zero, 0
+# MIPSN32R6-NEXT:            R_MIPS_HI16 symbol+0x8
+# MIPSN32R6-NEXT: 24 21 00 00  addiu  $1, $1, 0
+# MIPSN32R6-NEXT:            R_MIPS_LO16 symbol+0x8
+# MIPSN32R6-NEXT: 7c 2c 00 26  sc     $12, 0($1)
+
+# MIPS64:         3c 01 00 00  lui    $1, 0
+# MIPS64-NEXT:               R_MIPS_HIGHEST/R_MIPS_NONE/R_MIPS_NONE  symbol+0x8
+# MIPS64-NEXT:    64 21 00 00  daddiu $1, $1, 0
+# MIPS64-NEXT:               R_MIPS_HIGHER/R_MIPS_NONE/R_MIPS_NONE  symbol+0x8
+# MIPS64-NEXT:    00 01 0c 38  dsll   $1, $1, 16
+# MIPS64-NEXT:    64 21 00 00  daddiu $1, $1, 0
+# MIPS64-NEXT:               R_MIPS_HI16/R_MIPS_NONE/R_MIPS_NONE  symbol+0x8
+# MIPS64-NEXT:    00 01 0c 38  dsll   $1, $1, 16
+# MIPS64-NEXT:    e0 2c 00 00  sc     $12, 0($1)
+# MIPS64-NEXT:               R_MIPS_LO16/R_MIPS_NONE/R_MIPS_NONE  symbol+0x8
+
+# MIPS64R6:       3c 01 00 00  aui    $1, $zero, 0
+# MIPS64R6-NEXT:             R_MIPS_HIGHEST/R_MIPS_NONE/R_MIPS_NONE  symbol+0x8
+# MIPS64R6-NEXT:  64 21 00 00  daddiu $1, $1, 0
+# MIPS64R6-NEXT:             R_MIPS_HIGHER/R_MIPS_NONE/R_MIPS_NONE  symbol+0x8
+# MIPS64R6-NEXT:  00 01 0c 38  dsll   $1, $1, 16
+# MIPS64R6-NEXT:  64 21 00 00  daddiu $1, $1, 0
+# MIPS64R6-NEXT:             R_MIPS_HI16/R_MIPS_NONE/R_MIPS_NONE  symbol+0x8
+# MIPS64R6-NEXT:  00 01 0c 38  dsll   $1, $1, 16
+# MIPS64R6-NEXT:  64 21 00 00  daddiu $1, $1, 0
+# MIPS64R6-NEXT:             R_MIPS_LO16/R_MIPS_NONE/R_MIPS_NONE  symbol+0x8
+# MIPS64R6-NEXT:  7c 2c 00 26  sc     $12, 0($1)
+
+.option pic2
+
+sc $12, symbol
+# MIPS32:         8f 81 00 00  lw     $1, 0($gp)
+# MIPS32-NEXT:               R_MIPS_GOT16 symbol
+# MIPS32-NEXT:    e0 2c 00 00  sc     $12, 0($1)
+
+# MIPS32R6:       8f 81 00 00  lw     $1, 0($gp)
+# MIPS32R6-NEXT:             R_MIPS_GOT16 symbol
+# MIPS32R6-NEXT:  7c 2c 00 26  sc     $12, 0($1)
+
+# MIPSN32:        8f 81 00 00  lw     $1, 0($gp)
+# MIPSN32-NEXT:              R_MIPS_GOT_DISP symbol
+# MIPSN32-NEXT:   e0 2c 00 00  sc     $12, 0($1)
+
+# MIPSN32R6:      8f 81 00 00  lw     $1, 0($gp)
+# MIPSN32R6-NEXT:            R_MIPS_GOT_DISP symbol
+# MIPSN32R6-NEXT: 7c 2c 00 26  sc     $12, 0($1)
+
+# MIPS64:         df 81 00 00  ld     $1, 0($gp)
+# MIPS64-NEXT:               R_MIPS_GOT_DISP/R_MIPS_NONE/R_MIPS_NONE symbol
+# MIPS64-NEXT:    e0 2c 00 00  sc     $12, 0($1)
+
+# MIPS64R6:       df 81 00 00  ld     $1, 0($gp)
+# MIPS64R6-NEXT:             R_MIPS_GOT_DISP/R_MIPS_NONE/R_MIPS_NONE symbol
+# MIPS64R6-NEXT:  7c 2c 00 26  sc     $12, 0($1)
+
+sc $12, symbol+8
+# MIPS32:         8f 81 00 00  lw     $1, 0($gp)
+# MIPS32-NEXT:               R_MIPS_GOT16 symbol
+# MIPS32-NEXT:    e0 2c 00 08  sc     $12, 8($1)
+
+# MIPS32R6:       8f 81 00 00  lw     $1, 0($gp)
+# MIPS32R6-NEXT:             R_MIPS_GOT16 symbol
+# MIPS32R6-NEXT:  24 21 00 08  addiu  $1, $1, 8
+# MIPS32R6-NEXT:  7c 2c 00 26  sc     $12, 0($1)
+
+# MIPSN32:        8f 81 00 00  lw     $1, 0($gp)
+# MIPSN32-NEXT:              R_MIPS_GOT_DISP symbol
+# MIPSN32-NEXT:   e0 2c 00 08  sc     $12, 8($1)
+
+# MIPSN32R6:      8f 81 00 00  lw     $1, 0($gp)
+# MIPSN32R6-NEXT:            R_MIPS_GOT_DISP symbol
+# MIPSN32R6-NEXT: 24 21 00 08  addiu  $1, $1, 8
+# MIPSN32R6-NEXT: 7c 2c 00 26  sc     $12, 0($1)
+
+# MIPS64:         df 81 00 00  ld     $1, 0($gp)
+# MIPS64-NEXT:               R_MIPS_GOT_DISP/R_MIPS_NONE/R_MIPS_NONE symbol
+# MIPS64-NEXT:    e0 2c 00 08  sc     $12, 8($1)
+
+# MIPS64R6:       df 81 00 00  ld     $1, 0($gp)
+# MIPS64R6-NEXT:             R_MIPS_GOT_DISP/R_MIPS_NONE/R_MIPS_NONE symbol
+# MIPS64R6-NEXT:  64 21 00 08  daddiu $1, $1, 8
+# MIPS64R6-NEXT:  7c 2c 00 26  sc     $12, 0($1)

llvm/test/MC/Mips/scd-expansion.s

+# RUN: llvm-mc -filetype=obj -triple mips64 -mcpu=mips64 %s -o - \
+# RUN:   | llvm-objdump -d -r - | FileCheck %s --check-prefix=MIPS64
+# RUN: llvm-mc -filetype=obj -triple mips64 -mcpu=mips64r6 %s -o - \
+# RUN:   | llvm-objdump -d -r - | FileCheck %s --check-prefix=MIPS64R6
+
+scd $2, 128($sp)
+# MIPS64:         f3 a2 00 80  scd    $2, 128($sp)
+# MIPS64R6:       7f a2 40 27  scd    $2, 128($sp)
+
+scd $2, -128($sp)
+# MIPS64:         f3 a2 ff 80  scd    $2, -128($sp)
+# MIPS64R6:       7f a2 c0 27  scd    $2, -128($sp)
+
+scd $2, 256($sp)
+# MIPS64:         f3 a2 01 00  scd    $2, 256($sp)
+
+# MIPS64R6:       67 a1 01 00  daddiu $1, $sp, 256
+# MIPS64R6-NEXT:  7c 22 00 27  scd    $2, 0($1)
+
+scd $2, -257($sp)
+# MIPS64:         f3 a2 fe ff  scd    $2, -257($sp)
+
+# MIPS64R6:       67 a1 fe ff  daddiu $1, $sp, -257
+# MIPS64R6-NEXT:  7c 22 00 27  scd    $2, 0($1)
+
+scd $2, 32767($sp)
+# MIPS64:         f3 a2 7f ff  scd    $2, 32767($sp)
+
+# MIPS64R6:       67 a1 7f ff  daddiu $1, $sp, 32767
+# MIPS64R6-NEXT:  7c 22 00 27  scd    $2, 0($1)
+
+scd $2, 32768($sp)
+# MIPS64:         3c 01 00 01  lui    $1, 1
+# MIPS64-NEXT:    00 3d 08 2d  daddu  $1, $1, $sp
+# MIPS64-NEXT:    f0 22 80 00  scd    $2, -32768($1)
+
+# MIPS64R6:       34 01 80 00  ori    $1, $zero, 32768
+# MIPS64R6-NEXT:  00 3d 08 2d  daddu  $1, $1, $sp
+# MIPS64R6-NEXT:  7c 22 00 27  scd    $2, 0($1)
+
+scd $2, -32768($sp)
+# MIPS64:         f3 a2 80 00  scd    $2, -32768($sp)
+
+# MIPS64R6:       67 a1 80 00  daddiu $1, $sp, -32768
+# MIPS64R6-NEXT:  7c 22 00 27  scd    $2, 0($1)
+
+scd $2, -32769($sp)
+# MIPS64:         3c 01 ff ff  lui    $1, 65535
+# MIPS64-NEXT:    00 3d 08 2d  daddu  $1, $1, $sp
+# MIPS64-NEXT:    f0 22 7f ff  scd    $2, 32767($1)
+
+# MIPS64R6:       3c 01 ff ff  aui    $1, $zero, 65535
+# MIPS64R6-NEXT:  34 21 7f ff  ori    $1, $1, 32767
+# MIPS64R6-NEXT:  00 3d 08 2d  daddu  $1, $1, $sp
+# MIPS64R6-NEXT:  7c 22 00 27  scd    $2, 0($1)
+
+scd $2, 2147483648($sp)
+# MIPS64:         34 01 80 00  ori    $1, $zero, 32768
+# MIPS64-NEXT:    00 01 0c 38  dsll   $1, $1, 16
+# MIPS64-NEXT:    00 3d 08 2d  daddu  $1, $1, $sp
+# MIPS64-NEXT:    f0 22 00 00  scd    $2, 0($1)
+
+# MIPS64R6:       34 01 80 00  ori    $1, $zero, 32768
+# MIPS64R6-NEXT:  00 01 0c 38  dsll   $1, $1, 16
+# MIPS64R6-NEXT:  00 3d 08 2d  daddu  $1, $1, $sp
+# MIPS64R6-NEXT:  7c 22 00 27  scd    $2, 0($1)
+
+scd $2, -2147483648($sp)
+# MIPS64:         3c 01 80 00  lui    $1, 32768
+# MIPS64-NEXT:    00 3d 08 2d  daddu  $1, $1, $sp
+# MIPS64-NEXT:    f0 22 00 00  scd    $2, 0($1)
+
+# MIPS64R6:       3c 01 80 00  aui    $1, $zero, 32768
+# MIPS64R6-NEXT:  00 3d 08 2d  daddu  $1, $1, $sp
+# MIPS64R6-NEXT:  7c 22 00 27  scd    $2, 0($1)
+
+scd $2, 9223372036853775808($sp)
+# MIPS64:         3c 01 7f ff  lui    $1, 32767
+# MIPS64-NEXT:    34 21 ff ff  ori    $1, $1, 65535
+# MIPS64-NEXT:    00 01 0c 38  dsll   $1, $1, 16
+# MIPS64-NEXT:    34 21 ff f1  ori    $1, $1, 65521
+# MIPS64-NEXT:    00 01 0c 38  dsll   $1, $1, 16
+# MIPS64-NEXT:    00 3d 08 2d  daddu  $1, $1, $sp
+# MIPS64-NEXT:    f0 22 bd c0  scd    $2, -16960($1)
+
+# MIPS64R6:       3c 01 7f ff  aui    $1, $zero, 32767
+# MIPS64R6-NEXT:  34 21 ff ff  ori    $1, $1, 65535
+# MIPS64R6-NEXT:  00 01 0c 38  dsll   $1, $1, 16
+# MIPS64R6-NEXT:  34 21 ff f0  ori    $1, $1, 65520
+# MIPS64R6-NEXT:  00 01 0c 38  dsll   $1, $1, 16
+# MIPS64R6-NEXT:  34 21 bd c0  ori    $1, $1, 48576
+# MIPS64R6-NEXT:  00 3d 08 2d  daddu  $1, $1, $sp
+# MIPS64R6-NEXT:  7c 22 00 27  scd    $2, 0($1)
+
+scd $12, symbol
+# MIPS64:         3c 01 00 00  lui    $1, 0
+# MIPS64-NEXT:               R_MIPS_HIGHEST/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64-NEXT:    64 21 00 00  daddiu $1, $1, 0
+# MIPS64-NEXT:               R_MIPS_HIGHER/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64-NEXT:    00 01 0c 38  dsll   $1, $1, 16
+# MIPS64-NEXT:    64 21 00 00  daddiu $1, $1, 0
+# MIPS64-NEXT:               R_MIPS_HI16/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64-NEXT:    00 01 0c 38  dsll   $1, $1, 16
+# MIPS64-NEXT:    f0 2c 00 00  scd    $12, 0($1)
+# MIPS64-NEXT:               R_MIPS_LO16/R_MIPS_NONE/R_MIPS_NONE  symbol
+
+# MIPS64R6:       3c 01 00 00  aui    $1, $zero, 0
+# MIPS64R6-NEXT:             R_MIPS_HIGHEST/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64R6-NEXT:  64 21 00 00  daddiu $1, $1, 0
+# MIPS64R6-NEXT:             R_MIPS_HIGHER/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64R6-NEXT:  00 01 0c 38  dsll   $1, $1, 16
+# MIPS64R6-NEXT:  64 21 00 00  daddiu $1, $1, 0
+# MIPS64R6-NEXT:             R_MIPS_HI16/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64R6-NEXT:  00 01 0c 38  dsll   $1, $1, 16
+# MIPS64R6-NEXT:  64 21 00 00  daddiu $1, $1, 0
+# MIPS64R6-NEXT:             R_MIPS_LO16/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64R6-NEXT:  7c 2c 00 27  scd    $12, 0($1)
+
+scd $12, symbol($3)
+# MIPS64:         3c 01 00 00  lui    $1, 0
+# MIPS64-NEXT:               R_MIPS_HIGHEST/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64-NEXT:    64 21 00 00  daddiu $1, $1, 0
+# MIPS64-NEXT:               R_MIPS_HIGHER/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64-NEXT:    00 01 0c 38  dsll   $1, $1, 16
+# MIPS64-NEXT:    64 21 00 00  daddiu $1, $1, 0
+# MIPS64-NEXT:               R_MIPS_HI16/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64-NEXT:    00 01 0c 38  dsll   $1, $1, 16
+# MIPS64-NEXT:    00 23 08 2d  daddu  $1, $1, $3
+# MIPS64-NEXT:    f0 2c 00 00  scd    $12, 0($1)
+# MIPS64-NEXT:               R_MIPS_LO16/R_MIPS_NONE/R_MIPS_NONE  symbol
+
+# MIPS64R6:       3c 01 00 00  aui    $1, $zero, 0
+# MIPS64R6-NEXT:             R_MIPS_HIGHEST/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64R6-NEXT:  64 21 00 00  daddiu $1, $1, 0
+# MIPS64R6-NEXT:             R_MIPS_HIGHER/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64R6-NEXT:  00 01 0c 38  dsll   $1, $1, 16
+# MIPS64R6-NEXT:  64 21 00 00  daddiu $1, $1, 0
+# MIPS64R6-NEXT:             R_MIPS_HI16/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64R6-NEXT:  00 01 0c 38  dsll   $1, $1, 16
+# MIPS64R6-NEXT:  64 21 00 00  daddiu $1, $1, 0
+# MIPS64R6-NEXT:             R_MIPS_LO16/R_MIPS_NONE/R_MIPS_NONE  symbol
+# MIPS64R6-NEXT:  00 23 08 2d  daddu  $1, $1, $3
+# MIPS64R6-NEXT:  7c 2c 00 27  scd    $12, 0($1)
+
+scd $12, symbol+8
+# MIPS64:         3c 01 00 00  lui    $1, 0
+# MIPS64-NEXT:               R_MIPS_HIGHEST/R_MIPS_NONE/R_MIPS_NONE  symbol+0x8
+# MIPS64-NEXT:    64 21 00 00  daddiu $1, $1, 0
+# MIPS64-NEXT:               R_MIPS_HIGHER/R_MIPS_NONE/R_MIPS_NONE  symbol+0x8
+# MIPS64-NEXT:    00 01 0c 38  dsll   $1, $1, 16
+# MIPS64-NEXT:    64 21 00 00  daddiu $1, $1, 0
+# MIPS64-NEXT:               R_MIPS_HI16/R_MIPS_NONE/R_MIPS_NONE  symbol+0x8
+# MIPS64-NEXT:    00 01 0c 38  dsll   $1, $1, 16
+# MIPS64-NEXT:    f0 2c 00 00  scd    $12, 0($1)
+# MIPS64-NEXT:               R_MIPS_LO16/R_MIPS_NONE/R_MIPS_NONE  symbol+0x8
+
+# MIPS64R6:       3c 01 00 00  aui    $1, $zero, 0
+# MIPS64R6-NEXT:             R_MIPS_HIGHEST/R_MIPS_NONE/R_MIPS_NONE  symbol+0x8
+# MIPS64R6-NEXT:  64 21 00 00  daddiu $1, $1, 0
+# MIPS64R6-NEXT:             R_MIPS_HIGHER/R_MIPS_NONE/R_MIPS_NONE  symbol+0x8
+# MIPS64R6-NEXT:  00 01 0c 38  dsll   $1, $1, 16
+# MIPS64R6-NEXT:  64 21 00 00  daddiu $1, $1, 0
+# MIPS64R6-NEXT:             R_MIPS_HI16/R_MIPS_NONE/R_MIPS_NONE  symbol+0x8
+# MIPS64R6-NEXT:  00 01 0c 38  dsll   $1, $1, 16
+# MIPS64R6-NEXT:  64 21 00 00  daddiu $1, $1, 0
+# MIPS64R6-NEXT:             R_MIPS_LO16/R_MIPS_NONE/R_MIPS_NONE  symbol+0x8
+# MIPS64R6-NEXT:  7c 2c 00 27  scd    $12, 0($1)
+
+.option pic2
+
+scd $12, symbol
+# MIPS64:         df 81 00 00  ld     $1, 0($gp)
+# MIPS64-NEXT:               R_MIPS_GOT_DISP/R_MIPS_NONE/R_MIPS_NONE symbol
+# MIPS64-NEXT:    f0 2c 00 00  scd    $12, 0($1)
+
+# MIPS64R6:       df 81 00 00  ld     $1, 0($gp)
+# MIPS64R6-NEXT:             R_MIPS_GOT_DISP/R_MIPS_NONE/R_MIPS_NONE symbol
+# MIPS64R6-NEXT:  7c 2c 00 27  scd    $12, 0($1)
+
+scd $12, symbol+8
+# MIPS64:         df 81 00 00  ld     $1, 0($gp)
+# MIPS64-NEXT:               R_MIPS_GOT_DISP/R_MIPS_NONE/R_MIPS_NONE symbol
+# MIPS64-NEXT:    f0 2c 00 08  scd    $12, 8($1)
+
+# MIPS64R6:       df 81 00 00  ld     $1, 0($gp)
+# MIPS64R6-NEXT:             R_MIPS_GOT_DISP/R_MIPS_NONE/R_MIPS_NONE symbol
+# MIPS64R6-NEXT:  64 21 00 08  daddiu $1, $1, 8
+# MIPS64R6-NEXT:  7c 2c 00 27  scd    $12, 0($1)