/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp

Bug Summary

File:	lib/Target/Mips/AsmParser/MipsAsmParser.cpp
Warning:	line 3785, column 31 The left operand of '==' is a garbage value
Annotated Source Code

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1//===-- MipsAsmParser.cpp - Parse Mips assembly to MCInst instructions ----===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//

10#include "MCTargetDesc/MipsABIFlagsSection.h"
11#include "MCTargetDesc/MipsABIInfo.h"
12#include "MCTargetDesc/MipsBaseInfo.h"
13#include "MCTargetDesc/MipsMCExpr.h"
14#include "MCTargetDesc/MipsMCTargetDesc.h"
15#include "MipsTargetStreamer.h"
16#include "llvm/ADT/APFloat.h"
17#include "llvm/ADT/STLExtras.h"
18#include "llvm/ADT/SmallVector.h"
19#include "llvm/ADT/StringRef.h"
20#include "llvm/ADT/StringSwitch.h"
21#include "llvm/ADT/Triple.h"
22#include "llvm/ADT/Twine.h"
23#include "llvm/BinaryFormat/ELF.h"
24#include "llvm/MC/MCContext.h"
25#include "llvm/MC/MCExpr.h"
26#include "llvm/MC/MCInst.h"
27#include "llvm/MC/MCInstrDesc.h"
28#include "llvm/MC/MCObjectFileInfo.h"
29#include "llvm/MC/MCParser/MCAsmLexer.h"
30#include "llvm/MC/MCParser/MCAsmParser.h"
31#include "llvm/MC/MCParser/MCAsmParserExtension.h"
32#include "llvm/MC/MCParser/MCParsedAsmOperand.h"
33#include "llvm/MC/MCParser/MCTargetAsmParser.h"
34#include "llvm/MC/MCSectionELF.h"
35#include "llvm/MC/MCStreamer.h"
36#include "llvm/MC/MCSubtargetInfo.h"
37#include "llvm/MC/MCSymbol.h"
38#include "llvm/MC/MCSymbolELF.h"
39#include "llvm/MC/MCValue.h"
40#include "llvm/MC/SubtargetFeature.h"
41#include "llvm/Support/Casting.h"
42#include "llvm/Support/Compiler.h"
43#include "llvm/Support/Debug.h"
44#include "llvm/Support/ErrorHandling.h"
45#include "llvm/Support/MathExtras.h"
46#include "llvm/Support/SMLoc.h"
47#include "llvm/Support/SourceMgr.h"
48#include "llvm/Support/TargetRegistry.h"
49#include "llvm/Support/raw_ostream.h"
50#include <algorithm>
51#include <cassert>
52#include <cstdint>
53#include <memory>
54#include <string>
55#include <utility>

57using namespace llvm;

59#define DEBUG_TYPE"mips-asm-parser" "mips-asm-parser"

61namespace llvm {

63class MCInstrInfo;

65} // end namespace llvm

67namespace {

69class MipsAssemblerOptions {
70public:
MipsAssemblerOptions(const FeatureBitset &Features_) : Features(Features_) {}

MipsAssemblerOptions(const MipsAssemblerOptions *Opts) {
  ATReg = Opts->getATRegIndex();
  Reorder = Opts->isReorder();
  Macro = Opts->isMacro();
  Features = Opts->getFeatures();
}

unsigned getATRegIndex() const { return ATReg; }
bool setATRegIndex(unsigned Reg) {
  if (Reg > 31)
    return false;

  ATReg = Reg;
  return true;
}

bool isReorder() const { return Reorder; }
void setReorder() { Reorder = true; }
void setNoReorder() { Reorder = false; }

bool isMacro() const { return Macro; }
void setMacro() { Macro = true; }
void setNoMacro() { Macro = false; }

const FeatureBitset &getFeatures() const { return Features; }
void setFeatures(const FeatureBitset &Features_) { Features = Features_; }

// Set of features that are either architecture features or referenced
// by them (e.g.: FeatureNaN2008 implied by FeatureMips32r6).
// The full table can be found in MipsGenSubtargetInfo.inc (MipsFeatureKV[]).
// The reason we need this mask is explained in the selectArch function.
// FIXME: Ideally we would like TableGen to generate this information.
static const FeatureBitset AllArchRelatedMask;

107private:
unsigned ATReg = 1;
bool Reorder = true;
bool Macro = true;
FeatureBitset Features;
112};

114} // end anonymous namespace

116const FeatureBitset MipsAssemblerOptions::AllArchRelatedMask = {
  Mips::FeatureMips1, Mips::FeatureMips2, Mips::FeatureMips3,
  Mips::FeatureMips3_32, Mips::FeatureMips3_32r2, Mips::FeatureMips4,
  Mips::FeatureMips4_32, Mips::FeatureMips4_32r2, Mips::FeatureMips5,
  Mips::FeatureMips5_32r2, Mips::FeatureMips32, Mips::FeatureMips32r2,
  Mips::FeatureMips32r3, Mips::FeatureMips32r5, Mips::FeatureMips32r6,
  Mips::FeatureMips64, Mips::FeatureMips64r2, Mips::FeatureMips64r3,
  Mips::FeatureMips64r5, Mips::FeatureMips64r6, Mips::FeatureCnMips,
  Mips::FeatureFP64Bit, Mips::FeatureGP64Bit, Mips::FeatureNaN2008
125};

127namespace {

129class MipsAsmParser : public MCTargetAsmParser {
MipsTargetStreamer &getTargetStreamer() {
  MCTargetStreamer &TS = *getParser().getStreamer().getTargetStreamer();
  return static_cast<MipsTargetStreamer &>(TS);
}

MipsABIInfo ABI;
SmallVector<std::unique_ptr<MipsAssemblerOptions>, 2> AssemblerOptions;
MCSymbol *CurrentFn; // Pointer to the function being parsed. It may be a
                     // nullptr, which indicates that no function is currently
                     // selected. This usually happens after an '.end func'
                     // directive.
bool IsLittleEndian;
bool IsPicEnabled;
bool IsCpRestoreSet;
int CpRestoreOffset;
unsigned CpSaveLocation;
/// If true, then CpSaveLocation is a register, otherwise it's an offset.
bool     CpSaveLocationIsRegister;

// Print a warning along with its fix-it message at the given range.
void printWarningWithFixIt(const Twine &Msg, const Twine &FixMsg,
                           SMRange Range, bool ShowColors = true);

153#define GET_ASSEMBLER_HEADER
154#include "MipsGenAsmMatcher.inc"

unsigned
checkEarlyTargetMatchPredicate(MCInst &Inst,
                               const OperandVector &Operands) override;
unsigned checkTargetMatchPredicate(MCInst &Inst) override;

bool MatchAndEmitInstruction(SMLoc IDLoc, unsigned &Opcode,
                             OperandVector &Operands, MCStreamer &Out,
                             uint64_t &ErrorInfo,
                             bool MatchingInlineAsm) override;

/// Parse a register as used in CFI directives
bool ParseRegister(unsigned &RegNo, SMLoc &StartLoc, SMLoc &EndLoc) override;

bool parseParenSuffix(StringRef Name, OperandVector &Operands);

bool parseBracketSuffix(StringRef Name, OperandVector &Operands);

bool mnemonicIsValid(StringRef Mnemonic, unsigned VariantID);

bool ParseInstruction(ParseInstructionInfo &Info, StringRef Name,
                      SMLoc NameLoc, OperandVector &Operands) override;

bool ParseDirective(AsmToken DirectiveID) override;

OperandMatchResultTy parseMemOperand(OperandVector &Operands);
OperandMatchResultTy
matchAnyRegisterNameWithoutDollar(OperandVector &Operands,
                                  StringRef Identifier, SMLoc S);
OperandMatchResultTy matchAnyRegisterWithoutDollar(OperandVector &Operands,
                                                   SMLoc S);
OperandMatchResultTy parseAnyRegister(OperandVector &Operands);
OperandMatchResultTy parseImm(OperandVector &Operands);
OperandMatchResultTy parseJumpTarget(OperandVector &Operands);
OperandMatchResultTy parseInvNum(OperandVector &Operands);
OperandMatchResultTy parseRegisterPair(OperandVector &Operands);
OperandMatchResultTy parseMovePRegPair(OperandVector &Operands);
OperandMatchResultTy parseRegisterList(OperandVector &Operands);

bool searchSymbolAlias(OperandVector &Operands);

bool parseOperand(OperandVector &, StringRef Mnemonic);

enum MacroExpanderResultTy {
  MER_NotAMacro,
  MER_Success,
  MER_Fail,
};

// Expands assembly pseudo instructions.
MacroExpanderResultTy tryExpandInstruction(MCInst &Inst, SMLoc IDLoc,
                                           MCStreamer &Out,
                                           const MCSubtargetInfo *STI);

bool expandJalWithRegs(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
                       const MCSubtargetInfo *STI);

bool loadImmediate(int64_t ImmValue, unsigned DstReg, unsigned SrcReg,
                   bool Is32BitImm, bool IsAddress, SMLoc IDLoc,
                   MCStreamer &Out, const MCSubtargetInfo *STI);

bool loadAndAddSymbolAddress(const MCExpr *SymExpr, unsigned DstReg,
                             unsigned SrcReg, bool Is32BitSym, SMLoc IDLoc,
                             MCStreamer &Out, const MCSubtargetInfo *STI);

bool emitPartialAddress(MipsTargetStreamer &TOut, SMLoc IDLoc, MCSymbol *Sym);

bool expandLoadImm(MCInst &Inst, bool Is32BitImm, SMLoc IDLoc,
                   MCStreamer &Out, const MCSubtargetInfo *STI);

bool expandLoadImmReal(MCInst &Inst, bool IsSingle, bool IsGPR, bool Is64FPU,
                       SMLoc IDLoc, MCStreamer &Out,
                       const MCSubtargetInfo *STI);

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,
                   const MCSubtargetInfo *STI, bool IsLoad, bool IsImmOpnd);

void expandLoadInst(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
                    const MCSubtargetInfo *STI, bool IsImmOpnd);

void expandStoreInst(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
                     const MCSubtargetInfo *STI, bool IsImmOpnd);

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,
                     const MCSubtargetInfo *STI);

bool expandCondBranches(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
                        const MCSubtargetInfo *STI);

bool expandDiv(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
               const MCSubtargetInfo *STI, const bool IsMips64,
               const bool Signed);

bool expandTrunc(MCInst &Inst, bool IsDouble, bool Is64FPU, SMLoc IDLoc,
                 MCStreamer &Out, const MCSubtargetInfo *STI);

bool expandUlh(MCInst &Inst, bool Signed, SMLoc IDLoc, MCStreamer &Out,
               const MCSubtargetInfo *STI);

bool expandUsh(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
               const MCSubtargetInfo *STI);

bool expandUxw(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
               const MCSubtargetInfo *STI);

bool expandRotation(MCInst &Inst, SMLoc IDLoc,
                    MCStreamer &Out, const MCSubtargetInfo *STI);
bool expandRotationImm(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
                       const MCSubtargetInfo *STI);
bool expandDRotation(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
                     const MCSubtargetInfo *STI);
bool expandDRotationImm(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
                        const MCSubtargetInfo *STI);

bool expandAbs(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
               const MCSubtargetInfo *STI);

bool expandMulImm(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
                  const MCSubtargetInfo *STI);

bool expandMulO(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
                const MCSubtargetInfo *STI);

bool expandMulOU(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
                 const MCSubtargetInfo *STI);

bool expandDMULMacro(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
                     const MCSubtargetInfo *STI);

bool expandLoadStoreDMacro(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
                           const MCSubtargetInfo *STI, bool IsLoad);

bool expandSeq(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
               const MCSubtargetInfo *STI);

bool expandSeqI(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
                const MCSubtargetInfo *STI);

bool expandMXTRAlias(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
                     const MCSubtargetInfo *STI);

bool reportParseError(Twine ErrorMsg);
bool reportParseError(SMLoc Loc, Twine ErrorMsg);

bool parseMemOffset(const MCExpr *&Res, bool isParenExpr);

bool isEvaluated(const MCExpr *Expr);
bool parseSetMips0Directive();
bool parseSetArchDirective();
bool parseSetFeature(uint64_t Feature);
bool isPicAndNotNxxAbi(); // Used by .cpload, .cprestore, and .cpsetup.
bool parseDirectiveCpLoad(SMLoc Loc);
bool parseDirectiveCpRestore(SMLoc Loc);
bool parseDirectiveCPSetup();
bool parseDirectiveCPReturn();
bool parseDirectiveNaN();
bool parseDirectiveSet();
bool parseDirectiveOption();
bool parseInsnDirective();
bool parseRSectionDirective(StringRef Section);
bool parseSSectionDirective(StringRef Section, unsigned Type);

bool parseSetAtDirective();
bool parseSetNoAtDirective();
bool parseSetMacroDirective();
bool parseSetNoMacroDirective();
bool parseSetMsaDirective();
bool parseSetNoMsaDirective();
bool parseSetNoDspDirective();
bool parseSetReorderDirective();
bool parseSetNoReorderDirective();
bool parseSetMips16Directive();
bool parseSetNoMips16Directive();
bool parseSetFpDirective();
bool parseSetOddSPRegDirective();
bool parseSetNoOddSPRegDirective();
bool parseSetPopDirective();
bool parseSetPushDirective();
bool parseSetSoftFloatDirective();
bool parseSetHardFloatDirective();
bool parseSetMtDirective();
bool parseSetNoMtDirective();
bool parseSetNoCRCDirective();

bool parseSetAssignment();

bool parseDataDirective(unsigned Size, SMLoc L);
bool parseDirectiveGpWord();
bool parseDirectiveGpDWord();
bool parseDirectiveDtpRelWord();
bool parseDirectiveDtpRelDWord();
bool parseDirectiveTpRelWord();
bool parseDirectiveTpRelDWord();
bool parseDirectiveModule();
bool parseDirectiveModuleFP();
bool parseFpABIValue(MipsABIFlagsSection::FpABIKind &FpABI,
                     StringRef Directive);

bool parseInternalDirectiveReallowModule();

bool eatComma(StringRef ErrorStr);

int matchCPURegisterName(StringRef Symbol);

int matchHWRegsRegisterName(StringRef Symbol);

int matchFPURegisterName(StringRef Name);

int matchFCCRegisterName(StringRef Name);

int matchACRegisterName(StringRef Name);

int matchMSA128RegisterName(StringRef Name);

int matchMSA128CtrlRegisterName(StringRef Name);

unsigned getReg(int RC, int RegNo);

/// Returns the internal register number for the current AT. Also checks if
/// the current AT is unavailable (set to $0) and gives an error if it is.
/// This should be used in pseudo-instruction expansions which need AT.
unsigned getATReg(SMLoc Loc);

bool canUseATReg();

bool processInstruction(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
                        const MCSubtargetInfo *STI);

// Helper function that checks if the value of a vector index is within the
// boundaries of accepted values for each RegisterKind
// Example: INSERT.B $w0[n], $1 => 16 > n >= 0
bool validateMSAIndex(int Val, int RegKind);

// Selects a new architecture by updating the FeatureBits with the necessary
// info including implied dependencies.
// Internally, it clears all the feature bits related to *any* architecture
// and selects the new one using the ToggleFeature functionality of the
// MCSubtargetInfo object that handles implied dependencies. The reason we
// clear all the arch related bits manually is because ToggleFeature only
// clears the features that imply the feature being cleared and not the
// features implied by the feature being cleared. This is easier to see
// with an example:
//  --------------------------------------------------
// | Feature         | Implies                        |
// | -------------------------------------------------|
// | FeatureMips1    | None                           |
// | FeatureMips2    | FeatureMips1                   |
// | FeatureMips3    | FeatureMips2 | FeatureMipsGP64 |
// | FeatureMips4    | FeatureMips3                   |
// | ...             |                                |
//  --------------------------------------------------
//
// Setting Mips3 is equivalent to set: (FeatureMips3 | FeatureMips2 |
// FeatureMipsGP64 | FeatureMips1)
// Clearing Mips3 is equivalent to clear (FeatureMips3 | FeatureMips4).
void selectArch(StringRef ArchFeature) {
  MCSubtargetInfo &STI = copySTI();
  FeatureBitset FeatureBits = STI.getFeatureBits();
  FeatureBits &= ~MipsAssemblerOptions::AllArchRelatedMask;
  STI.setFeatureBits(FeatureBits);
  setAvailableFeatures(
      ComputeAvailableFeatures(STI.ToggleFeature(ArchFeature)));
  AssemblerOptions.back()->setFeatures(STI.getFeatureBits());
}

void setFeatureBits(uint64_t Feature, StringRef FeatureString) {
  if (!(getSTI().getFeatureBits()[Feature])) {
    MCSubtargetInfo &STI = copySTI();
    setAvailableFeatures(
        ComputeAvailableFeatures(STI.ToggleFeature(FeatureString)));
    AssemblerOptions.back()->setFeatures(STI.getFeatureBits());
  }
}

void clearFeatureBits(uint64_t Feature, StringRef FeatureString) {
  if (getSTI().getFeatureBits()[Feature]) {
    MCSubtargetInfo &STI = copySTI();
    setAvailableFeatures(
        ComputeAvailableFeatures(STI.ToggleFeature(FeatureString)));
    AssemblerOptions.back()->setFeatures(STI.getFeatureBits());
  }
}

void setModuleFeatureBits(uint64_t Feature, StringRef FeatureString) {
  setFeatureBits(Feature, FeatureString);
  AssemblerOptions.front()->setFeatures(getSTI().getFeatureBits());
}

void clearModuleFeatureBits(uint64_t Feature, StringRef FeatureString) {
  clearFeatureBits(Feature, FeatureString);
  AssemblerOptions.front()->setFeatures(getSTI().getFeatureBits());
}

462public:
enum MipsMatchResultTy {
  Match_RequiresDifferentSrcAndDst = FIRST_TARGET_MATCH_RESULT_TY,
  Match_RequiresDifferentOperands,
  Match_RequiresNoZeroRegister,
  Match_RequiresSameSrcAndDst,
  Match_NoFCCRegisterForCurrentISA,
  Match_NonZeroOperandForSync,
  Match_NonZeroOperandForMTCX,
  Match_RequiresPosSizeRange0_32,
  Match_RequiresPosSizeRange33_64,
  Match_RequiresPosSizeUImm6,
474#define GET_OPERAND_DIAGNOSTIC_TYPES
475#include "MipsGenAsmMatcher.inc"
476#undef GET_OPERAND_DIAGNOSTIC_TYPES
};

MipsAsmParser(const MCSubtargetInfo &sti, MCAsmParser &parser,
              const MCInstrInfo &MII, const MCTargetOptions &Options)
  : MCTargetAsmParser(Options, sti, MII),
      ABI(MipsABIInfo::computeTargetABI(Triple(sti.getTargetTriple()),
                                        sti.getCPU(), Options)) {
  MCAsmParserExtension::Initialize(parser);

  parser.addAliasForDirective(".asciiz", ".asciz");

  // Initialize the set of available features.
  setAvailableFeatures(ComputeAvailableFeatures(getSTI().getFeatureBits()));

  // Remember the initial assembler options. The user can not modify these.
  AssemblerOptions.push_back(
      llvm::make_unique<MipsAssemblerOptions>(getSTI().getFeatureBits()));

  // Create an assembler options environment for the user to modify.
  AssemblerOptions.push_back(
      llvm::make_unique<MipsAssemblerOptions>(getSTI().getFeatureBits()));

  getTargetStreamer().updateABIInfo(*this);

  if (!isABI_O32() && !useOddSPReg() != 0)
    report_fatal_error("-mno-odd-spreg requires the O32 ABI");

  CurrentFn = nullptr;

  IsPicEnabled = getContext().getObjectFileInfo()->isPositionIndependent();

  IsCpRestoreSet = false;
  CpRestoreOffset = -1;

  const Triple &TheTriple = sti.getTargetTriple();
  if ((TheTriple.getArch() == Triple::mips) ||
      (TheTriple.getArch() == Triple::mips64))
    IsLittleEndian = false;
  else
    IsLittleEndian = true;

  if (getSTI().getCPU() == "mips64r6" && inMicroMipsMode())
    report_fatal_error("microMIPS64R6 is not supported", false);
}

/// True if all of $fcc0 - $fcc7 exist for the current ISA.
bool hasEightFccRegisters() const { return hasMips4() || hasMips32(); }

bool isGP64bit() const {
  return getSTI().getFeatureBits()[Mips::FeatureGP64Bit];
}

bool isFP64bit() const {
  return getSTI().getFeatureBits()[Mips::FeatureFP64Bit];
}

const MipsABIInfo &getABI() const { return ABI; }
bool isABI_N32() const { return ABI.IsN32(); }
bool isABI_N64() const { return ABI.IsN64(); }
bool isABI_O32() const { return ABI.IsO32(); }
bool isABI_FPXX() const {
  return getSTI().getFeatureBits()[Mips::FeatureFPXX];
}

bool useOddSPReg() const {
  return !(getSTI().getFeatureBits()[Mips::FeatureNoOddSPReg]);
}

bool inMicroMipsMode() const {
  return getSTI().getFeatureBits()[Mips::FeatureMicroMips];
}

bool hasMips1() const {
  return getSTI().getFeatureBits()[Mips::FeatureMips1];
}

bool hasMips2() const {
  return getSTI().getFeatureBits()[Mips::FeatureMips2];
}

bool hasMips3() const {
  return getSTI().getFeatureBits()[Mips::FeatureMips3];
}

bool hasMips4() const {
  return getSTI().getFeatureBits()[Mips::FeatureMips4];
}

bool hasMips5() const {
  return getSTI().getFeatureBits()[Mips::FeatureMips5];
}

bool hasMips32() const {
  return getSTI().getFeatureBits()[Mips::FeatureMips32];
}

bool hasMips64() const {
  return getSTI().getFeatureBits()[Mips::FeatureMips64];
}

bool hasMips32r2() const {
  return getSTI().getFeatureBits()[Mips::FeatureMips32r2];
}

bool hasMips64r2() const {
  return getSTI().getFeatureBits()[Mips::FeatureMips64r2];
}

bool hasMips32r3() const {
  return (getSTI().getFeatureBits()[Mips::FeatureMips32r3]);
}

bool hasMips64r3() const {
  return (getSTI().getFeatureBits()[Mips::FeatureMips64r3]);
}

bool hasMips32r5() const {
  return (getSTI().getFeatureBits()[Mips::FeatureMips32r5]);
}

bool hasMips64r5() const {
  return (getSTI().getFeatureBits()[Mips::FeatureMips64r5]);
}

bool hasMips32r6() const {
  return getSTI().getFeatureBits()[Mips::FeatureMips32r6];
}

bool hasMips64r6() const {
  return getSTI().getFeatureBits()[Mips::FeatureMips64r6];
}

bool hasDSP() const {
  return getSTI().getFeatureBits()[Mips::FeatureDSP];
}

bool hasDSPR2() const {
  return getSTI().getFeatureBits()[Mips::FeatureDSPR2];
}

bool hasDSPR3() const {
  return getSTI().getFeatureBits()[Mips::FeatureDSPR3];
}

bool hasMSA() const {
  return getSTI().getFeatureBits()[Mips::FeatureMSA];
}

bool hasCnMips() const {
  return (getSTI().getFeatureBits()[Mips::FeatureCnMips]);
}

bool inPicMode() {
  return IsPicEnabled;
}

bool inMips16Mode() const {
  return getSTI().getFeatureBits()[Mips::FeatureMips16];
}

bool useTraps() const {
  return getSTI().getFeatureBits()[Mips::FeatureUseTCCInDIV];
}

bool useSoftFloat() const {
  return getSTI().getFeatureBits()[Mips::FeatureSoftFloat];
}
bool hasMT() const {
  return getSTI().getFeatureBits()[Mips::FeatureMT];
}

bool hasCRC() const {
  return getSTI().getFeatureBits()[Mips::FeatureCRC];
}

/// Warn if RegIndex is the same as the current AT.
void warnIfRegIndexIsAT(unsigned RegIndex, SMLoc Loc);

void warnIfNoMacro(SMLoc Loc);

bool isLittle() const { return IsLittleEndian; }

const MCExpr *createTargetUnaryExpr(const MCExpr *E,
                                    AsmToken::TokenKind OperatorToken,
                                    MCContext &Ctx) override {
  switch(OperatorToken) {
  default:
    llvm_unreachable("Unknown token")::llvm::llvm_unreachable_internal("Unknown token", "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 664);
    return nullptr;
  case AsmToken::PercentCall16:
    return MipsMCExpr::create(MipsMCExpr::MEK_GOT_CALL, E, Ctx);
  case AsmToken::PercentCall_Hi:
    return MipsMCExpr::create(MipsMCExpr::MEK_CALL_HI16, E, Ctx);
  case AsmToken::PercentCall_Lo:
    return MipsMCExpr::create(MipsMCExpr::MEK_CALL_LO16, E, Ctx);
  case AsmToken::PercentDtprel_Hi:
    return MipsMCExpr::create(MipsMCExpr::MEK_DTPREL_HI, E, Ctx);
  case AsmToken::PercentDtprel_Lo:
    return MipsMCExpr::create(MipsMCExpr::MEK_DTPREL_LO, E, Ctx);
  case AsmToken::PercentGot:
    return MipsMCExpr::create(MipsMCExpr::MEK_GOT, E, Ctx);
  case AsmToken::PercentGot_Disp:
    return MipsMCExpr::create(MipsMCExpr::MEK_GOT_DISP, E, Ctx);
  case AsmToken::PercentGot_Hi:
    return MipsMCExpr::create(MipsMCExpr::MEK_GOT_HI16, E, Ctx);
  case AsmToken::PercentGot_Lo:
    return MipsMCExpr::create(MipsMCExpr::MEK_GOT_LO16, E, Ctx);
  case AsmToken::PercentGot_Ofst:
    return MipsMCExpr::create(MipsMCExpr::MEK_GOT_OFST, E, Ctx);
  case AsmToken::PercentGot_Page:
    return MipsMCExpr::create(MipsMCExpr::MEK_GOT_PAGE, E, Ctx);
  case AsmToken::PercentGottprel:
    return MipsMCExpr::create(MipsMCExpr::MEK_GOTTPREL, E, Ctx);
  case AsmToken::PercentGp_Rel:
    return MipsMCExpr::create(MipsMCExpr::MEK_GPREL, E, Ctx);
  case AsmToken::PercentHi:
    return MipsMCExpr::create(MipsMCExpr::MEK_HI, E, Ctx);
  case AsmToken::PercentHigher:
    return MipsMCExpr::create(MipsMCExpr::MEK_HIGHER, E, Ctx);
  case AsmToken::PercentHighest:
    return MipsMCExpr::create(MipsMCExpr::MEK_HIGHEST, E, Ctx);
  case AsmToken::PercentLo:
    return MipsMCExpr::create(MipsMCExpr::MEK_LO, E, Ctx);
  case AsmToken::PercentNeg:
    return MipsMCExpr::create(MipsMCExpr::MEK_NEG, E, Ctx);
  case AsmToken::PercentPcrel_Hi:
    return MipsMCExpr::create(MipsMCExpr::MEK_PCREL_HI16, E, Ctx);
  case AsmToken::PercentPcrel_Lo:
    return MipsMCExpr::create(MipsMCExpr::MEK_PCREL_LO16, E, Ctx);
  case AsmToken::PercentTlsgd:
    return MipsMCExpr::create(MipsMCExpr::MEK_TLSGD, E, Ctx);
  case AsmToken::PercentTlsldm:
    return MipsMCExpr::create(MipsMCExpr::MEK_TLSLDM, E, Ctx);
  case AsmToken::PercentTprel_Hi:
    return MipsMCExpr::create(MipsMCExpr::MEK_TPREL_HI, E, Ctx);
  case AsmToken::PercentTprel_Lo:
    return MipsMCExpr::create(MipsMCExpr::MEK_TPREL_LO, E, Ctx);
  }
}
716};

718/// MipsOperand - Instances of this class represent a parsed Mips machine
719/// instruction.
720class MipsOperand : public MCParsedAsmOperand {
721public:
/// Broad categories of register classes
/// The exact class is finalized by the render method.
enum RegKind {
  RegKind_GPR = 1,      /// GPR32 and GPR64 (depending on isGP64bit())
  RegKind_FGR = 2,      /// FGR32, FGR64, AFGR64 (depending on context and
                        /// isFP64bit())
  RegKind_FCC = 4,      /// FCC
  RegKind_MSA128 = 8,   /// MSA128[BHWD] (makes no difference which)
  RegKind_MSACtrl = 16, /// MSA control registers
  RegKind_COP2 = 32,    /// COP2
  RegKind_ACC = 64,     /// HI32DSP, LO32DSP, and ACC64DSP (depending on
                        /// context).
  RegKind_CCR = 128,    /// CCR
  RegKind_HWRegs = 256, /// HWRegs
  RegKind_COP3 = 512,   /// COP3
  RegKind_COP0 = 1024,  /// COP0
  /// Potentially any (e.g. $1)
  RegKind_Numeric = RegKind_GPR | RegKind_FGR | RegKind_FCC | RegKind_MSA128 |
                    RegKind_MSACtrl | RegKind_COP2 | RegKind_ACC |
                    RegKind_CCR | RegKind_HWRegs | RegKind_COP3 | RegKind_COP0
};

744private:
enum KindTy {
  k_Immediate,     /// An immediate (possibly involving symbol references)
  k_Memory,        /// Base + Offset Memory Address
  k_RegisterIndex, /// A register index in one or more RegKind.
  k_Token,         /// A simple token
  k_RegList,       /// A physical register list
  k_RegPair        /// A pair of physical register
} Kind;

754public:
MipsOperand(KindTy K, MipsAsmParser &Parser)
    : MCParsedAsmOperand(), Kind(K), AsmParser(Parser) {}

~MipsOperand() override {
  switch (Kind) {
  case k_Immediate:
    break;
  case k_Memory:
    delete Mem.Base;
    break;
  case k_RegList:
    delete RegList.List;
  case k_RegisterIndex:
  case k_Token:
  case k_RegPair:
    break;
  }
}

774private:
/// For diagnostics, and checking the assembler temporary
MipsAsmParser &AsmParser;

struct Token {
  const char *Data;
  unsigned Length;
};

struct RegIdxOp {
  unsigned Index; /// Index into the register class
  RegKind Kind;   /// Bitfield of the kinds it could possibly be
  struct Token Tok; /// The input token this operand originated from.
  const MCRegisterInfo *RegInfo;
};

struct ImmOp {
  const MCExpr *Val;
};

struct MemOp {
  MipsOperand *Base;
  const MCExpr *Off;
};

struct RegListOp {
  SmallVector<unsigned, 10> *List;
};

union {
  struct Token Tok;
  struct RegIdxOp RegIdx;
  struct ImmOp Imm;
  struct MemOp Mem;
  struct RegListOp RegList;
};

SMLoc StartLoc, EndLoc;

/// Internal constructor for register kinds
static std::unique_ptr<MipsOperand> CreateReg(unsigned Index, StringRef Str,
                                              RegKind RegKind,
                                              const MCRegisterInfo *RegInfo,
                                              SMLoc S, SMLoc E,
                                              MipsAsmParser &Parser) {
  auto Op = llvm::make_unique<MipsOperand>(k_RegisterIndex, Parser);
  Op->RegIdx.Index = Index;
  Op->RegIdx.RegInfo = RegInfo;
  Op->RegIdx.Kind = RegKind;
  Op->RegIdx.Tok.Data = Str.data();
  Op->RegIdx.Tok.Length = Str.size();
  Op->StartLoc = S;
  Op->EndLoc = E;
  return Op;
}

830public:
/// Coerce the register to GPR32 and return the real register for the current
/// target.
unsigned getGPR32Reg() const {
  assert(isRegIdx() && (RegIdx.Kind & RegKind_GPR) && "Invalid access!")(static_cast <bool> (isRegIdx() && (RegIdx.Kind
 & RegKind_GPR) && "Invalid access!") ? void (0) :
 __assert_fail ("isRegIdx() && (RegIdx.Kind & RegKind_GPR) && \"Invalid access!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 834, __extension__ __PRETTY_FUNCTION__));
  AsmParser.warnIfRegIndexIsAT(RegIdx.Index, StartLoc);
  unsigned ClassID = Mips::GPR32RegClassID;
  return RegIdx.RegInfo->getRegClass(ClassID).getRegister(RegIdx.Index);
}

/// Coerce the register to GPR32 and return the real register for the current
/// target.
unsigned getGPRMM16Reg() const {
  assert(isRegIdx() && (RegIdx.Kind & RegKind_GPR) && "Invalid access!")(static_cast <bool> (isRegIdx() && (RegIdx.Kind
 & RegKind_GPR) && "Invalid access!") ? void (0) :
 __assert_fail ("isRegIdx() && (RegIdx.Kind & RegKind_GPR) && \"Invalid access!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 843, __extension__ __PRETTY_FUNCTION__));
  unsigned ClassID = Mips::GPR32RegClassID;
  return RegIdx.RegInfo->getRegClass(ClassID).getRegister(RegIdx.Index);
}

/// Coerce the register to GPR64 and return the real register for the current
/// target.
unsigned getGPR64Reg() const {
  assert(isRegIdx() && (RegIdx.Kind & RegKind_GPR) && "Invalid access!")(static_cast <bool> (isRegIdx() && (RegIdx.Kind
 & RegKind_GPR) && "Invalid access!") ? void (0) :
 __assert_fail ("isRegIdx() && (RegIdx.Kind & RegKind_GPR) && \"Invalid access!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 851, __extension__ __PRETTY_FUNCTION__));
  unsigned ClassID = Mips::GPR64RegClassID;
  return RegIdx.RegInfo->getRegClass(ClassID).getRegister(RegIdx.Index);
}

856private:
/// Coerce the register to AFGR64 and return the real register for the current
/// target.
unsigned getAFGR64Reg() const {
  assert(isRegIdx() && (RegIdx.Kind & RegKind_FGR) && "Invalid access!")(static_cast <bool> (isRegIdx() && (RegIdx.Kind
 & RegKind_FGR) && "Invalid access!") ? void (0) :
 __assert_fail ("isRegIdx() && (RegIdx.Kind & RegKind_FGR) && \"Invalid access!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 860, __extension__ __PRETTY_FUNCTION__));
  if (RegIdx.Index % 2 != 0)
    AsmParser.Warning(StartLoc, "Float register should be even.");
  return RegIdx.RegInfo->getRegClass(Mips::AFGR64RegClassID)
      .getRegister(RegIdx.Index / 2);
}

/// Coerce the register to FGR64 and return the real register for the current
/// target.
unsigned getFGR64Reg() const {
  assert(isRegIdx() && (RegIdx.Kind & RegKind_FGR) && "Invalid access!")(static_cast <bool> (isRegIdx() && (RegIdx.Kind
 & RegKind_FGR) && "Invalid access!") ? void (0) :
 __assert_fail ("isRegIdx() && (RegIdx.Kind & RegKind_FGR) && \"Invalid access!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 870, __extension__ __PRETTY_FUNCTION__));
  return RegIdx.RegInfo->getRegClass(Mips::FGR64RegClassID)
      .getRegister(RegIdx.Index);
}

/// Coerce the register to FGR32 and return the real register for the current
/// target.
unsigned getFGR32Reg() const {
  assert(isRegIdx() && (RegIdx.Kind & RegKind_FGR) && "Invalid access!")(static_cast <bool> (isRegIdx() && (RegIdx.Kind
 & RegKind_FGR) && "Invalid access!") ? void (0) :
 __assert_fail ("isRegIdx() && (RegIdx.Kind & RegKind_FGR) && \"Invalid access!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 878, __extension__ __PRETTY_FUNCTION__));
  return RegIdx.RegInfo->getRegClass(Mips::FGR32RegClassID)
      .getRegister(RegIdx.Index);
}

/// Coerce the register to FGRH32 and return the real register for the current
/// target.
unsigned getFGRH32Reg() const {
  assert(isRegIdx() && (RegIdx.Kind & RegKind_FGR) && "Invalid access!")(static_cast <bool> (isRegIdx() && (RegIdx.Kind
 & RegKind_FGR) && "Invalid access!") ? void (0) :
 __assert_fail ("isRegIdx() && (RegIdx.Kind & RegKind_FGR) && \"Invalid access!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 886, __extension__ __PRETTY_FUNCTION__));
  return RegIdx.RegInfo->getRegClass(Mips::FGRH32RegClassID)
      .getRegister(RegIdx.Index);
}

/// Coerce the register to FCC and return the real register for the current
/// target.
unsigned getFCCReg() const {
  assert(isRegIdx() && (RegIdx.Kind & RegKind_FCC) && "Invalid access!")(static_cast <bool> (isRegIdx() && (RegIdx.Kind
 & RegKind_FCC) && "Invalid access!") ? void (0) :
 __assert_fail ("isRegIdx() && (RegIdx.Kind & RegKind_FCC) && \"Invalid access!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 894, __extension__ __PRETTY_FUNCTION__));
  return RegIdx.RegInfo->getRegClass(Mips::FCCRegClassID)
      .getRegister(RegIdx.Index);
}

/// Coerce the register to MSA128 and return the real register for the current
/// target.
unsigned getMSA128Reg() const {
  assert(isRegIdx() && (RegIdx.Kind & RegKind_MSA128) && "Invalid access!")(static_cast <bool> (isRegIdx() && (RegIdx.Kind
 & RegKind_MSA128) && "Invalid access!") ? void (
0) : __assert_fail ("isRegIdx() && (RegIdx.Kind & RegKind_MSA128) && \"Invalid access!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 902, __extension__ __PRETTY_FUNCTION__));
  // It doesn't matter which of the MSA128[BHWD] classes we use. They are all
  // identical
  unsigned ClassID = Mips::MSA128BRegClassID;
  return RegIdx.RegInfo->getRegClass(ClassID).getRegister(RegIdx.Index);
}

/// Coerce the register to MSACtrl and return the real register for the
/// current target.
unsigned getMSACtrlReg() const {
  assert(isRegIdx() && (RegIdx.Kind & RegKind_MSACtrl) && "Invalid access!")(static_cast <bool> (isRegIdx() && (RegIdx.Kind
 & RegKind_MSACtrl) && "Invalid access!") ? void (
0) : __assert_fail ("isRegIdx() && (RegIdx.Kind & RegKind_MSACtrl) && \"Invalid access!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 912, __extension__ __PRETTY_FUNCTION__));
  unsigned ClassID = Mips::MSACtrlRegClassID;
  return RegIdx.RegInfo->getRegClass(ClassID).getRegister(RegIdx.Index);
}

/// Coerce the register to COP0 and return the real register for the
/// current target.
unsigned getCOP0Reg() const {
  assert(isRegIdx() && (RegIdx.Kind & RegKind_COP0) && "Invalid access!")(static_cast <bool> (isRegIdx() && (RegIdx.Kind
 & RegKind_COP0) && "Invalid access!") ? void (0)
 : __assert_fail ("isRegIdx() && (RegIdx.Kind & RegKind_COP0) && \"Invalid access!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 920, __extension__ __PRETTY_FUNCTION__));
  unsigned ClassID = Mips::COP0RegClassID;
  return RegIdx.RegInfo->getRegClass(ClassID).getRegister(RegIdx.Index);
}

/// Coerce the register to COP2 and return the real register for the
/// current target.
unsigned getCOP2Reg() const {
  assert(isRegIdx() && (RegIdx.Kind & RegKind_COP2) && "Invalid access!")(static_cast <bool> (isRegIdx() && (RegIdx.Kind
 & RegKind_COP2) && "Invalid access!") ? void (0)
 : __assert_fail ("isRegIdx() && (RegIdx.Kind & RegKind_COP2) && \"Invalid access!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 928, __extension__ __PRETTY_FUNCTION__));
  unsigned ClassID = Mips::COP2RegClassID;
  return RegIdx.RegInfo->getRegClass(ClassID).getRegister(RegIdx.Index);
}

/// Coerce the register to COP3 and return the real register for the
/// current target.
unsigned getCOP3Reg() const {
  assert(isRegIdx() && (RegIdx.Kind & RegKind_COP3) && "Invalid access!")(static_cast <bool> (isRegIdx() && (RegIdx.Kind
 & RegKind_COP3) && "Invalid access!") ? void (0)
 : __assert_fail ("isRegIdx() && (RegIdx.Kind & RegKind_COP3) && \"Invalid access!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 936, __extension__ __PRETTY_FUNCTION__));
  unsigned ClassID = Mips::COP3RegClassID;
  return RegIdx.RegInfo->getRegClass(ClassID).getRegister(RegIdx.Index);
}

/// Coerce the register to ACC64DSP and return the real register for the
/// current target.
unsigned getACC64DSPReg() const {
  assert(isRegIdx() && (RegIdx.Kind & RegKind_ACC) && "Invalid access!")(static_cast <bool> (isRegIdx() && (RegIdx.Kind
 & RegKind_ACC) && "Invalid access!") ? void (0) :
 __assert_fail ("isRegIdx() && (RegIdx.Kind & RegKind_ACC) && \"Invalid access!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 944, __extension__ __PRETTY_FUNCTION__));
  unsigned ClassID = Mips::ACC64DSPRegClassID;
  return RegIdx.RegInfo->getRegClass(ClassID).getRegister(RegIdx.Index);
}

/// Coerce the register to HI32DSP and return the real register for the
/// current target.
unsigned getHI32DSPReg() const {
  assert(isRegIdx() && (RegIdx.Kind & RegKind_ACC) && "Invalid access!")(static_cast <bool> (isRegIdx() && (RegIdx.Kind
 & RegKind_ACC) && "Invalid access!") ? void (0) :
 __assert_fail ("isRegIdx() && (RegIdx.Kind & RegKind_ACC) && \"Invalid access!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 952, __extension__ __PRETTY_FUNCTION__));
  unsigned ClassID = Mips::HI32DSPRegClassID;
  return RegIdx.RegInfo->getRegClass(ClassID).getRegister(RegIdx.Index);
}

/// Coerce the register to LO32DSP and return the real register for the
/// current target.
unsigned getLO32DSPReg() const {
  assert(isRegIdx() && (RegIdx.Kind & RegKind_ACC) && "Invalid access!")(static_cast <bool> (isRegIdx() && (RegIdx.Kind
 & RegKind_ACC) && "Invalid access!") ? void (0) :
 __assert_fail ("isRegIdx() && (RegIdx.Kind & RegKind_ACC) && \"Invalid access!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 960, __extension__ __PRETTY_FUNCTION__));
  unsigned ClassID = Mips::LO32DSPRegClassID;
  return RegIdx.RegInfo->getRegClass(ClassID).getRegister(RegIdx.Index);
}

/// Coerce the register to CCR and return the real register for the
/// current target.
unsigned getCCRReg() const {
  assert(isRegIdx() && (RegIdx.Kind & RegKind_CCR) && "Invalid access!")(static_cast <bool> (isRegIdx() && (RegIdx.Kind
 & RegKind_CCR) && "Invalid access!") ? void (0) :
 __assert_fail ("isRegIdx() && (RegIdx.Kind & RegKind_CCR) && \"Invalid access!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 968, __extension__ __PRETTY_FUNCTION__));
  unsigned ClassID = Mips::CCRRegClassID;
  return RegIdx.RegInfo->getRegClass(ClassID).getRegister(RegIdx.Index);
}

/// Coerce the register to HWRegs and return the real register for the
/// current target.
unsigned getHWRegsReg() const {
  assert(isRegIdx() && (RegIdx.Kind & RegKind_HWRegs) && "Invalid access!")(static_cast <bool> (isRegIdx() && (RegIdx.Kind
 & RegKind_HWRegs) && "Invalid access!") ? void (
0) : __assert_fail ("isRegIdx() && (RegIdx.Kind & RegKind_HWRegs) && \"Invalid access!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 976, __extension__ __PRETTY_FUNCTION__));
  unsigned ClassID = Mips::HWRegsRegClassID;
  return RegIdx.RegInfo->getRegClass(ClassID).getRegister(RegIdx.Index);
}

981public:
void addExpr(MCInst &Inst, const MCExpr *Expr) const {
  // Add as immediate when possible.  Null MCExpr = 0.
  if (!Expr)
    Inst.addOperand(MCOperand::createImm(0));
  else if (const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Expr))
    Inst.addOperand(MCOperand::createImm(CE->getValue()));
  else
    Inst.addOperand(MCOperand::createExpr(Expr));
}

void addRegOperands(MCInst &Inst, unsigned N) const {
  llvm_unreachable("Use a custom parser instead")::llvm::llvm_unreachable_internal("Use a custom parser instead"
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 993);
}

/// Render the operand to an MCInst as a GPR32
/// Asserts if the wrong number of operands are requested, or the operand
/// is not a k_RegisterIndex compatible with RegKind_GPR
void addGPR32ZeroAsmRegOperands(MCInst &Inst, unsigned N) const {
  assert(N == 1 && "Invalid number of operands!")(static_cast <bool> (N == 1 && "Invalid number of operands!"
) ? void (0) : __assert_fail ("N == 1 && \"Invalid number of operands!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1000, __extension__ __PRETTY_FUNCTION__));
  Inst.addOperand(MCOperand::createReg(getGPR32Reg()));
}

void addGPR32NonZeroAsmRegOperands(MCInst &Inst, unsigned N) const {
  assert(N == 1 && "Invalid number of operands!")(static_cast <bool> (N == 1 && "Invalid number of operands!"
) ? void (0) : __assert_fail ("N == 1 && \"Invalid number of operands!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1005, __extension__ __PRETTY_FUNCTION__));
  Inst.addOperand(MCOperand::createReg(getGPR32Reg()));
}

void addGPR32AsmRegOperands(MCInst &Inst, unsigned N) const {
  assert(N == 1 && "Invalid number of operands!")(static_cast <bool> (N == 1 && "Invalid number of operands!"
) ? void (0) : __assert_fail ("N == 1 && \"Invalid number of operands!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1010, __extension__ __PRETTY_FUNCTION__));
  Inst.addOperand(MCOperand::createReg(getGPR32Reg()));
}

void addGPRMM16AsmRegOperands(MCInst &Inst, unsigned N) const {
  assert(N == 1 && "Invalid number of operands!")(static_cast <bool> (N == 1 && "Invalid number of operands!"
) ? void (0) : __assert_fail ("N == 1 && \"Invalid number of operands!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1015, __extension__ __PRETTY_FUNCTION__));
  Inst.addOperand(MCOperand::createReg(getGPRMM16Reg()));
}

void addGPRMM16AsmRegZeroOperands(MCInst &Inst, unsigned N) const {
  assert(N == 1 && "Invalid number of operands!")(static_cast <bool> (N == 1 && "Invalid number of operands!"
) ? void (0) : __assert_fail ("N == 1 && \"Invalid number of operands!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1020, __extension__ __PRETTY_FUNCTION__));
  Inst.addOperand(MCOperand::createReg(getGPRMM16Reg()));
}

void addGPRMM16AsmRegMovePOperands(MCInst &Inst, unsigned N) const {
  assert(N == 1 && "Invalid number of operands!")(static_cast <bool> (N == 1 && "Invalid number of operands!"
) ? void (0) : __assert_fail ("N == 1 && \"Invalid number of operands!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1025, __extension__ __PRETTY_FUNCTION__));
  Inst.addOperand(MCOperand::createReg(getGPRMM16Reg()));
}

/// Render the operand to an MCInst as a GPR64
/// Asserts if the wrong number of operands are requested, or the operand
/// is not a k_RegisterIndex compatible with RegKind_GPR
void addGPR64AsmRegOperands(MCInst &Inst, unsigned N) const {
  assert(N == 1 && "Invalid number of operands!")(static_cast <bool> (N == 1 && "Invalid number of operands!"
) ? void (0) : __assert_fail ("N == 1 && \"Invalid number of operands!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1033, __extension__ __PRETTY_FUNCTION__));
  Inst.addOperand(MCOperand::createReg(getGPR64Reg()));
}

void addAFGR64AsmRegOperands(MCInst &Inst, unsigned N) const {
  assert(N == 1 && "Invalid number of operands!")(static_cast <bool> (N == 1 && "Invalid number of operands!"
) ? void (0) : __assert_fail ("N == 1 && \"Invalid number of operands!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1038, __extension__ __PRETTY_FUNCTION__));
  Inst.addOperand(MCOperand::createReg(getAFGR64Reg()));
}

void addStrictlyAFGR64AsmRegOperands(MCInst &Inst, unsigned N) const {
  assert(N == 1 && "Invalid number of operands!")(static_cast <bool> (N == 1 && "Invalid number of operands!"
) ? void (0) : __assert_fail ("N == 1 && \"Invalid number of operands!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1043, __extension__ __PRETTY_FUNCTION__));
  Inst.addOperand(MCOperand::createReg(getAFGR64Reg()));
}

void addStrictlyFGR64AsmRegOperands(MCInst &Inst, unsigned N) const {
  assert(N == 1 && "Invalid number of operands!")(static_cast <bool> (N == 1 && "Invalid number of operands!"
) ? void (0) : __assert_fail ("N == 1 && \"Invalid number of operands!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1048, __extension__ __PRETTY_FUNCTION__));
  Inst.addOperand(MCOperand::createReg(getFGR64Reg()));
}

void addFGR64AsmRegOperands(MCInst &Inst, unsigned N) const {
  assert(N == 1 && "Invalid number of operands!")(static_cast <bool> (N == 1 && "Invalid number of operands!"
) ? void (0) : __assert_fail ("N == 1 && \"Invalid number of operands!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1053, __extension__ __PRETTY_FUNCTION__));
  Inst.addOperand(MCOperand::createReg(getFGR64Reg()));
}

void addFGR32AsmRegOperands(MCInst &Inst, unsigned N) const {
  assert(N == 1 && "Invalid number of operands!")(static_cast <bool> (N == 1 && "Invalid number of operands!"
) ? void (0) : __assert_fail ("N == 1 && \"Invalid number of operands!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1058, __extension__ __PRETTY_FUNCTION__));
  Inst.addOperand(MCOperand::createReg(getFGR32Reg()));
  // FIXME: We ought to do this for -integrated-as without -via-file-asm too.
  // FIXME: This should propagate failure up to parseStatement.
  if (!AsmParser.useOddSPReg() && RegIdx.Index & 1)
    AsmParser.getParser().printError(
        StartLoc, "-mno-odd-spreg prohibits the use of odd FPU "
                  "registers");
}

void addStrictlyFGR32AsmRegOperands(MCInst &Inst, unsigned N) const {
  assert(N == 1 && "Invalid number of operands!")(static_cast <bool> (N == 1 && "Invalid number of operands!"
) ? void (0) : __assert_fail ("N == 1 && \"Invalid number of operands!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1069, __extension__ __PRETTY_FUNCTION__));
  Inst.addOperand(MCOperand::createReg(getFGR32Reg()));
  // FIXME: We ought to do this for -integrated-as without -via-file-asm too.
  if (!AsmParser.useOddSPReg() && RegIdx.Index & 1)
    AsmParser.Error(StartLoc, "-mno-odd-spreg prohibits the use of odd FPU "
                              "registers");
}

void addFGRH32AsmRegOperands(MCInst &Inst, unsigned N) const {
  assert(N == 1 && "Invalid number of operands!")(static_cast <bool> (N == 1 && "Invalid number of operands!"
) ? void (0) : __assert_fail ("N == 1 && \"Invalid number of operands!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1078, __extension__ __PRETTY_FUNCTION__));
  Inst.addOperand(MCOperand::createReg(getFGRH32Reg()));
}

void addFCCAsmRegOperands(MCInst &Inst, unsigned N) const {
  assert(N == 1 && "Invalid number of operands!")(static_cast <bool> (N == 1 && "Invalid number of operands!"
) ? void (0) : __assert_fail ("N == 1 && \"Invalid number of operands!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1083, __extension__ __PRETTY_FUNCTION__));
  Inst.addOperand(MCOperand::createReg(getFCCReg()));
}

void addMSA128AsmRegOperands(MCInst &Inst, unsigned N) const {
  assert(N == 1 && "Invalid number of operands!")(static_cast <bool> (N == 1 && "Invalid number of operands!"
) ? void (0) : __assert_fail ("N == 1 && \"Invalid number of operands!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1088, __extension__ __PRETTY_FUNCTION__));
  Inst.addOperand(MCOperand::createReg(getMSA128Reg()));
}

void addMSACtrlAsmRegOperands(MCInst &Inst, unsigned N) const {
  assert(N == 1 && "Invalid number of operands!")(static_cast <bool> (N == 1 && "Invalid number of operands!"
) ? void (0) : __assert_fail ("N == 1 && \"Invalid number of operands!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1093, __extension__ __PRETTY_FUNCTION__));
  Inst.addOperand(MCOperand::createReg(getMSACtrlReg()));
}

void addCOP0AsmRegOperands(MCInst &Inst, unsigned N) const {
  assert(N == 1 && "Invalid number of operands!")(static_cast <bool> (N == 1 && "Invalid number of operands!"
) ? void (0) : __assert_fail ("N == 1 && \"Invalid number of operands!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1098, __extension__ __PRETTY_FUNCTION__));
  Inst.addOperand(MCOperand::createReg(getCOP0Reg()));
}

void addCOP2AsmRegOperands(MCInst &Inst, unsigned N) const {
  assert(N == 1 && "Invalid number of operands!")(static_cast <bool> (N == 1 && "Invalid number of operands!"
) ? void (0) : __assert_fail ("N == 1 && \"Invalid number of operands!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1103, __extension__ __PRETTY_FUNCTION__));
  Inst.addOperand(MCOperand::createReg(getCOP2Reg()));
}

void addCOP3AsmRegOperands(MCInst &Inst, unsigned N) const {
  assert(N == 1 && "Invalid number of operands!")(static_cast <bool> (N == 1 && "Invalid number of operands!"
) ? void (0) : __assert_fail ("N == 1 && \"Invalid number of operands!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1108, __extension__ __PRETTY_FUNCTION__));
  Inst.addOperand(MCOperand::createReg(getCOP3Reg()));
}

void addACC64DSPAsmRegOperands(MCInst &Inst, unsigned N) const {
  assert(N == 1 && "Invalid number of operands!")(static_cast <bool> (N == 1 && "Invalid number of operands!"
) ? void (0) : __assert_fail ("N == 1 && \"Invalid number of operands!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1113, __extension__ __PRETTY_FUNCTION__));
  Inst.addOperand(MCOperand::createReg(getACC64DSPReg()));
}

void addHI32DSPAsmRegOperands(MCInst &Inst, unsigned N) const {
  assert(N == 1 && "Invalid number of operands!")(static_cast <bool> (N == 1 && "Invalid number of operands!"
) ? void (0) : __assert_fail ("N == 1 && \"Invalid number of operands!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1118, __extension__ __PRETTY_FUNCTION__));
  Inst.addOperand(MCOperand::createReg(getHI32DSPReg()));
}

void addLO32DSPAsmRegOperands(MCInst &Inst, unsigned N) const {
  assert(N == 1 && "Invalid number of operands!")(static_cast <bool> (N == 1 && "Invalid number of operands!"
) ? void (0) : __assert_fail ("N == 1 && \"Invalid number of operands!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1123, __extension__ __PRETTY_FUNCTION__));
  Inst.addOperand(MCOperand::createReg(getLO32DSPReg()));
}

void addCCRAsmRegOperands(MCInst &Inst, unsigned N) const {
  assert(N == 1 && "Invalid number of operands!")(static_cast <bool> (N == 1 && "Invalid number of operands!"
) ? void (0) : __assert_fail ("N == 1 && \"Invalid number of operands!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1128, __extension__ __PRETTY_FUNCTION__));
  Inst.addOperand(MCOperand::createReg(getCCRReg()));
}

void addHWRegsAsmRegOperands(MCInst &Inst, unsigned N) const {
  assert(N == 1 && "Invalid number of operands!")(static_cast <bool> (N == 1 && "Invalid number of operands!"
) ? void (0) : __assert_fail ("N == 1 && \"Invalid number of operands!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1133, __extension__ __PRETTY_FUNCTION__));
  Inst.addOperand(MCOperand::createReg(getHWRegsReg()));
}

template <unsigned Bits, int Offset = 0, int AdjustOffset = 0>
void addConstantUImmOperands(MCInst &Inst, unsigned N) const {
  assert(N == 1 && "Invalid number of operands!")(static_cast <bool> (N == 1 && "Invalid number of operands!"
) ? void (0) : __assert_fail ("N == 1 && \"Invalid number of operands!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1139, __extension__ __PRETTY_FUNCTION__));
  uint64_t Imm = getConstantImm() - Offset;
  Imm &= (1ULL << Bits) - 1;
  Imm += Offset;
  Imm += AdjustOffset;
  Inst.addOperand(MCOperand::createImm(Imm));
}

template <unsigned Bits>
void addSImmOperands(MCInst &Inst, unsigned N) const {
  if (isImm() && !isConstantImm()) {
    addExpr(Inst, getImm());
    return;
  }
  addConstantSImmOperands<Bits, 0, 0>(Inst, N);
}

template <unsigned Bits>
void addUImmOperands(MCInst &Inst, unsigned N) const {
  if (isImm() && !isConstantImm()) {
    addExpr(Inst, getImm());
    return;
  }
  addConstantUImmOperands<Bits, 0, 0>(Inst, N);
}

template <unsigned Bits, int Offset = 0, int AdjustOffset = 0>
void addConstantSImmOperands(MCInst &Inst, unsigned N) const {
  assert(N == 1 && "Invalid number of operands!")(static_cast <bool> (N == 1 && "Invalid number of operands!"
) ? void (0) : __assert_fail ("N == 1 && \"Invalid number of operands!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1167, __extension__ __PRETTY_FUNCTION__));
  int64_t Imm = getConstantImm() - Offset;
  Imm = SignExtend64<Bits>(Imm);
  Imm += Offset;
  Imm += AdjustOffset;
  Inst.addOperand(MCOperand::createImm(Imm));
}

void addImmOperands(MCInst &Inst, unsigned N) const {
  assert(N == 1 && "Invalid number of operands!")(static_cast <bool> (N == 1 && "Invalid number of operands!"
) ? void (0) : __assert_fail ("N == 1 && \"Invalid number of operands!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1176, __extension__ __PRETTY_FUNCTION__));
  const MCExpr *Expr = getImm();
  addExpr(Inst, Expr);
}

void addMemOperands(MCInst &Inst, unsigned N) const {
  assert(N == 2 && "Invalid number of operands!")(static_cast <bool> (N == 2 && "Invalid number of operands!"
) ? void (0) : __assert_fail ("N == 2 && \"Invalid number of operands!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1182, __extension__ __PRETTY_FUNCTION__));

  Inst.addOperand(MCOperand::createReg(AsmParser.getABI().ArePtrs64bit()
                                           ? getMemBase()->getGPR64Reg()
                                           : getMemBase()->getGPR32Reg()));

  const MCExpr *Expr = getMemOff();
  addExpr(Inst, Expr);
}

void addMicroMipsMemOperands(MCInst &Inst, unsigned N) const {
  assert(N == 2 && "Invalid number of operands!")(static_cast <bool> (N == 2 && "Invalid number of operands!"
) ? void (0) : __assert_fail ("N == 2 && \"Invalid number of operands!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1193, __extension__ __PRETTY_FUNCTION__));

  Inst.addOperand(MCOperand::createReg(getMemBase()->getGPRMM16Reg()));

  const MCExpr *Expr = getMemOff();
  addExpr(Inst, Expr);
}

void addRegListOperands(MCInst &Inst, unsigned N) const {
  assert(N == 1 && "Invalid number of operands!")(static_cast <bool> (N == 1 && "Invalid number of operands!"
) ? void (0) : __assert_fail ("N == 1 && \"Invalid number of operands!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1202, __extension__ __PRETTY_FUNCTION__));

  for (auto RegNo : getRegList())
    Inst.addOperand(MCOperand::createReg(RegNo));
}

void addRegPairOperands(MCInst &Inst, unsigned N) const {
  assert(N == 2 && "Invalid number of operands!")(static_cast <bool> (N == 2 && "Invalid number of operands!"
) ? void (0) : __assert_fail ("N == 2 && \"Invalid number of operands!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1209, __extension__ __PRETTY_FUNCTION__));
  assert((RegIdx.Kind & RegKind_GPR) && "Invalid access!")(static_cast <bool> ((RegIdx.Kind & RegKind_GPR) &&
 "Invalid access!") ? void (0) : __assert_fail ("(RegIdx.Kind & RegKind_GPR) && \"Invalid access!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1210, __extension__ __PRETTY_FUNCTION__));
  unsigned RegNo = getRegPair();
  AsmParser.warnIfRegIndexIsAT(RegNo, StartLoc);
  Inst.addOperand(MCOperand::createReg(
    RegIdx.RegInfo->getRegClass(
      AsmParser.getABI().AreGprs64bit()
        ? Mips::GPR64RegClassID
        : Mips::GPR32RegClassID).getRegister(RegNo++)));
  Inst.addOperand(MCOperand::createReg(
    RegIdx.RegInfo->getRegClass(
      AsmParser.getABI().AreGprs64bit()
        ? Mips::GPR64RegClassID
        : Mips::GPR32RegClassID).getRegister(RegNo)));
}

void addMovePRegPairOperands(MCInst &Inst, unsigned N) const {
  assert(N == 2 && "Invalid number of operands!")(static_cast <bool> (N == 2 && "Invalid number of operands!"
) ? void (0) : __assert_fail ("N == 2 && \"Invalid number of operands!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1226, __extension__ __PRETTY_FUNCTION__));
  for (auto RegNo : getRegList())
    Inst.addOperand(MCOperand::createReg(RegNo));
}

bool isReg() const override {
  // As a special case until we sort out the definition of div/divu, accept
  // $0/$zero here so that MCK_ZERO works correctly.
  return isGPRAsmReg() && RegIdx.Index == 0;
}

bool isRegIdx() const { return Kind == k_RegisterIndex; }
bool isImm() const override { return Kind == k_Immediate; }

bool isConstantImm() const {
  int64_t Res;
  return isImm() && getImm()->evaluateAsAbsolute(Res);
}

bool isConstantImmz() const {
  return isConstantImm() && getConstantImm() == 0;
}

template <unsigned Bits, int Offset = 0> bool isConstantUImm() const {
  return isConstantImm() && isUInt<Bits>(getConstantImm() - Offset);
}

template <unsigned Bits> bool isSImm() const {
  return isConstantImm() ? isInt<Bits>(getConstantImm()) : isImm();
}

template <unsigned Bits> bool isUImm() const {
  return isConstantImm() ? isUInt<Bits>(getConstantImm()) : isImm();
}

template <unsigned Bits> bool isAnyImm() const {
  return isConstantImm() ? (isInt<Bits>(getConstantImm()) ||
                            isUInt<Bits>(getConstantImm()))
                         : isImm();
}

template <unsigned Bits, int Offset = 0> bool isConstantSImm() const {
  return isConstantImm() && isInt<Bits>(getConstantImm() - Offset);
}

template <unsigned Bottom, unsigned Top> bool isConstantUImmRange() const {
  return isConstantImm() && getConstantImm() >= Bottom &&
         getConstantImm() <= Top;
}

bool isToken() const override {
  // Note: It's not possible to pretend that other operand kinds are tokens.
  // The matcher emitter checks tokens first.
  return Kind == k_Token;
}

bool isMem() const override { return Kind == k_Memory; }

bool isConstantMemOff() const {
  return isMem() && isa<MCConstantExpr>(getMemOff());
}

// Allow relocation operators.
// FIXME: This predicate and others need to look through binary expressions
//        and determine whether a Value is a constant or not.
template <unsigned Bits, unsigned ShiftAmount = 0>
bool isMemWithSimmOffset() const {
  if (!isMem())
    return false;
  if (!getMemBase()->isGPRAsmReg())
    return false;
  if (isa<MCTargetExpr>(getMemOff()) ||
      (isConstantMemOff() &&
       isShiftedInt<Bits, ShiftAmount>(getConstantMemOff())))
    return true;
  MCValue Res;
  bool IsReloc = getMemOff()->evaluateAsRelocatable(Res, nullptr, nullptr);
  return IsReloc && isShiftedInt<Bits, ShiftAmount>(Res.getConstant());
}

bool isMemWithGRPMM16Base() const {
  return isMem() && getMemBase()->isMM16AsmReg();
}

template <unsigned Bits> bool isMemWithUimmOffsetSP() const {
  return isMem() && isConstantMemOff() && isUInt<Bits>(getConstantMemOff())
    && getMemBase()->isRegIdx() && (getMemBase()->getGPR32Reg() == Mips::SP);
}

template <unsigned Bits> bool isMemWithUimmWordAlignedOffsetSP() const {
  return isMem() && isConstantMemOff() && isUInt<Bits>(getConstantMemOff())
    && (getConstantMemOff() % 4 == 0) && getMemBase()->isRegIdx()
    && (getMemBase()->getGPR32Reg() == Mips::SP);
}

template <unsigned Bits> bool isMemWithSimmWordAlignedOffsetGP() const {
  return isMem() && isConstantMemOff() && isInt<Bits>(getConstantMemOff())
    && (getConstantMemOff() % 4 == 0) && getMemBase()->isRegIdx()
    && (getMemBase()->getGPR32Reg() == Mips::GP);
}

template <unsigned Bits, unsigned ShiftLeftAmount>
bool isScaledUImm() const {
  return isConstantImm() &&
         isShiftedUInt<Bits, ShiftLeftAmount>(getConstantImm());
}

template <unsigned Bits, unsigned ShiftLeftAmount>
bool isScaledSImm() const {
  if (isConstantImm() && isShiftedInt<Bits, ShiftLeftAmount>(getConstantImm()))
    return true;
  // Operand can also be a symbol or symbol plus offset in case of relocations.
  if (Kind != k_Immediate)
    return false;
  MCValue Res;
  bool Success = getImm()->evaluateAsRelocatable(Res, nullptr, nullptr);
  return Success && isShiftedInt<Bits, ShiftLeftAmount>(Res.getConstant());
}

bool isRegList16() const {
  if (!isRegList())
    return false;

  int Size = RegList.List->size();
  if (Size < 2 || Size > 5)
    return false;

  unsigned R0 = RegList.List->front();
  unsigned R1 = RegList.List->back();
  if (!((R0 == Mips::S0 && R1 == Mips::RA) ||
        (R0 == Mips::S0_64 && R1 == Mips::RA_64)))
    return false;

  int PrevReg = *RegList.List->begin();
  for (int i = 1; i < Size - 1; i++) {
    int Reg = (*(RegList.List))[i];
    if ( Reg != PrevReg + 1)
      return false;
    PrevReg = Reg;
  }

  return true;
}

bool isInvNum() const { return Kind == k_Immediate; }

bool isLSAImm() const {
  if (!isConstantImm())
    return false;
  int64_t Val = getConstantImm();
  return 1 <= Val && Val <= 4;
}

bool isRegList() const { return Kind == k_RegList; }

bool isMovePRegPair() const {
  if (Kind != k_RegList || RegList.List->size() != 2)
    return false;

  unsigned R0 = RegList.List->front();
  unsigned R1 = RegList.List->back();

  if ((R0 == Mips::A1 && R1 == Mips::A2) ||
      (R0 == Mips::A1 && R1 == Mips::A3) ||
      (R0 == Mips::A2 && R1 == Mips::A3) ||
      (R0 == Mips::A0 && R1 == Mips::S5) ||
      (R0 == Mips::A0 && R1 == Mips::S6) ||
      (R0 == Mips::A0 && R1 == Mips::A1) ||
      (R0 == Mips::A0 && R1 == Mips::A2) ||
      (R0 == Mips::A0 && R1 == Mips::A3) ||
      (R0 == Mips::A1_64 && R1 == Mips::A2_64) ||
      (R0 == Mips::A1_64 && R1 == Mips::A3_64) ||
      (R0 == Mips::A2_64 && R1 == Mips::A3_64) ||
      (R0 == Mips::A0_64 && R1 == Mips::S5_64) ||
      (R0 == Mips::A0_64 && R1 == Mips::S6_64) ||
      (R0 == Mips::A0_64 && R1 == Mips::A1_64) ||
      (R0 == Mips::A0_64 && R1 == Mips::A2_64) ||
      (R0 == Mips::A0_64 && R1 == Mips::A3_64))
    return true;

  return false;
}

StringRef getToken() const {
  assert(Kind == k_Token && "Invalid access!")(static_cast <bool> (Kind == k_Token && "Invalid access!"
) ? void (0) : __assert_fail ("Kind == k_Token && \"Invalid access!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1410, __extension__ __PRETTY_FUNCTION__));
  return StringRef(Tok.Data, Tok.Length);
}

bool isRegPair() const {
  return Kind == k_RegPair && RegIdx.Index <= 30;
}

unsigned getReg() const override {
  // As a special case until we sort out the definition of div/divu, accept
  // $0/$zero here so that MCK_ZERO works correctly.
  if (Kind == k_RegisterIndex && RegIdx.Index == 0 &&
      RegIdx.Kind & RegKind_GPR)
    return getGPR32Reg(); // FIXME: GPR64 too

  llvm_unreachable("Invalid access!")::llvm::llvm_unreachable_internal("Invalid access!", "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1425);
  return 0;
}

const MCExpr *getImm() const {
  assert((Kind == k_Immediate) && "Invalid access!")(static_cast <bool> ((Kind == k_Immediate) && "Invalid access!"
) ? void (0) : __assert_fail ("(Kind == k_Immediate) && \"Invalid access!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1430, __extension__ __PRETTY_FUNCTION__));
  return Imm.Val;
}

int64_t getConstantImm() const {
  const MCExpr *Val = getImm();
  int64_t Value = 0;
  (void)Val->evaluateAsAbsolute(Value);
  return Value;
}

MipsOperand *getMemBase() const {
  assert((Kind == k_Memory) && "Invalid access!")(static_cast <bool> ((Kind == k_Memory) && "Invalid access!"
) ? void (0) : __assert_fail ("(Kind == k_Memory) && \"Invalid access!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1442, __extension__ __PRETTY_FUNCTION__));
  return Mem.Base;
}

const MCExpr *getMemOff() const {
  assert((Kind == k_Memory) && "Invalid access!")(static_cast <bool> ((Kind == k_Memory) && "Invalid access!"
) ? void (0) : __assert_fail ("(Kind == k_Memory) && \"Invalid access!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1447, __extension__ __PRETTY_FUNCTION__));
  return Mem.Off;
}

int64_t getConstantMemOff() const {
  return static_cast<const MCConstantExpr *>(getMemOff())->getValue();
}

const SmallVectorImpl<unsigned> &getRegList() const {
  assert((Kind == k_RegList) && "Invalid access!")(static_cast <bool> ((Kind == k_RegList) && "Invalid access!"
) ? void (0) : __assert_fail ("(Kind == k_RegList) && \"Invalid access!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1456, __extension__ __PRETTY_FUNCTION__));
  return *(RegList.List);
}

unsigned getRegPair() const {
  assert((Kind == k_RegPair) && "Invalid access!")(static_cast <bool> ((Kind == k_RegPair) && "Invalid access!"
) ? void (0) : __assert_fail ("(Kind == k_RegPair) && \"Invalid access!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1461, __extension__ __PRETTY_FUNCTION__));
  return RegIdx.Index;
}

static std::unique_ptr<MipsOperand> CreateToken(StringRef Str, SMLoc S,
                                                MipsAsmParser &Parser) {
  auto Op = llvm::make_unique<MipsOperand>(k_Token, Parser);
  Op->Tok.Data = Str.data();
  Op->Tok.Length = Str.size();
  Op->StartLoc = S;
  Op->EndLoc = S;
  return Op;
}

/// Create a numeric register (e.g. $1). The exact register remains
/// unresolved until an instruction successfully matches
static std::unique_ptr<MipsOperand>
createNumericReg(unsigned Index, StringRef Str, const MCRegisterInfo *RegInfo,
                 SMLoc S, SMLoc E, MipsAsmParser &Parser) {
  DEBUG(dbgs() << "createNumericReg(" << Index << ", ...)\n")do { if (::llvm::DebugFlag && ::llvm::isCurrentDebugType
("mips-asm-parser")) { dbgs() << "createNumericReg(" <<
 Index << ", ...)\n"; } } while (false);
  return CreateReg(Index, Str, RegKind_Numeric, RegInfo, S, E, Parser);
}

/// Create a register that is definitely a GPR.
/// This is typically only used for named registers such as $gp.
static std::unique_ptr<MipsOperand>
createGPRReg(unsigned Index, StringRef Str, const MCRegisterInfo *RegInfo,
             SMLoc S, SMLoc E, MipsAsmParser &Parser) {
  return CreateReg(Index, Str, RegKind_GPR, RegInfo, S, E, Parser);
}

/// Create a register that is definitely a FGR.
/// This is typically only used for named registers such as $f0.
static std::unique_ptr<MipsOperand>
createFGRReg(unsigned Index, StringRef Str, const MCRegisterInfo *RegInfo,
             SMLoc S, SMLoc E, MipsAsmParser &Parser) {
  return CreateReg(Index, Str, RegKind_FGR, RegInfo, S, E, Parser);
}

/// Create a register that is definitely a HWReg.
/// This is typically only used for named registers such as $hwr_cpunum.
static std::unique_ptr<MipsOperand>
createHWRegsReg(unsigned Index, StringRef Str, const MCRegisterInfo *RegInfo,
                SMLoc S, SMLoc E, MipsAsmParser &Parser) {
  return CreateReg(Index, Str, RegKind_HWRegs, RegInfo, S, E, Parser);
}

/// Create a register that is definitely an FCC.
/// This is typically only used for named registers such as $fcc0.
static std::unique_ptr<MipsOperand>
createFCCReg(unsigned Index, StringRef Str, const MCRegisterInfo *RegInfo,
             SMLoc S, SMLoc E, MipsAsmParser &Parser) {
  return CreateReg(Index, Str, RegKind_FCC, RegInfo, S, E, Parser);
}

/// Create a register that is definitely an ACC.
/// This is typically only used for named registers such as $ac0.
static std::unique_ptr<MipsOperand>
createACCReg(unsigned Index, StringRef Str, const MCRegisterInfo *RegInfo,
             SMLoc S, SMLoc E, MipsAsmParser &Parser) {
  return CreateReg(Index, Str, RegKind_ACC, RegInfo, S, E, Parser);
}

/// Create a register that is definitely an MSA128.
/// This is typically only used for named registers such as $w0.
static std::unique_ptr<MipsOperand>
createMSA128Reg(unsigned Index, StringRef Str, const MCRegisterInfo *RegInfo,
                SMLoc S, SMLoc E, MipsAsmParser &Parser) {
  return CreateReg(Index, Str, RegKind_MSA128, RegInfo, S, E, Parser);
}

/// Create a register that is definitely an MSACtrl.
/// This is typically only used for named registers such as $msaaccess.
static std::unique_ptr<MipsOperand>
createMSACtrlReg(unsigned Index, StringRef Str, const MCRegisterInfo *RegInfo,
                 SMLoc S, SMLoc E, MipsAsmParser &Parser) {
  return CreateReg(Index, Str, RegKind_MSACtrl, RegInfo, S, E, Parser);
}

static std::unique_ptr<MipsOperand>
CreateImm(const MCExpr *Val, SMLoc S, SMLoc E, MipsAsmParser &Parser) {
  auto Op = llvm::make_unique<MipsOperand>(k_Immediate, Parser);
  Op->Imm.Val = Val;
  Op->StartLoc = S;
  Op->EndLoc = E;
  return Op;
}

static std::unique_ptr<MipsOperand>
CreateMem(std::unique_ptr<MipsOperand> Base, const MCExpr *Off, SMLoc S,
          SMLoc E, MipsAsmParser &Parser) {
  auto Op = llvm::make_unique<MipsOperand>(k_Memory, Parser);
  Op->Mem.Base = Base.release();
  Op->Mem.Off = Off;
  Op->StartLoc = S;
  Op->EndLoc = E;
  return Op;
}

static std::unique_ptr<MipsOperand>
CreateRegList(SmallVectorImpl<unsigned> &Regs, SMLoc StartLoc, SMLoc EndLoc,
              MipsAsmParser &Parser) {
  assert(Regs.size() > 0 && "Empty list not allowed")(static_cast <bool> (Regs.size() > 0 && "Empty list not allowed"
) ? void (0) : __assert_fail ("Regs.size() > 0 && \"Empty list not allowed\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1563, __extension__ __PRETTY_FUNCTION__));

  auto Op = llvm::make_unique<MipsOperand>(k_RegList, Parser);
  Op->RegList.List = new SmallVector<unsigned, 10>(Regs.begin(), Regs.end());
  Op->StartLoc = StartLoc;
  Op->EndLoc = EndLoc;
  return Op;
}

static std::unique_ptr<MipsOperand> CreateRegPair(const MipsOperand &MOP,
                                                  SMLoc S, SMLoc E,
                                                  MipsAsmParser &Parser) {
  auto Op = llvm::make_unique<MipsOperand>(k_RegPair, Parser);
  Op->RegIdx.Index = MOP.RegIdx.Index;
  Op->RegIdx.RegInfo = MOP.RegIdx.RegInfo;
  Op->RegIdx.Kind = MOP.RegIdx.Kind;
  Op->StartLoc = S;
  Op->EndLoc = E;
  return Op;
}

bool isGPRZeroAsmReg() const {
  return isRegIdx() && RegIdx.Kind & RegKind_GPR && RegIdx.Index == 0;
}

bool isGPRNonZeroAsmReg() const {
 return isRegIdx() && RegIdx.Kind & RegKind_GPR && RegIdx.Index > 0 &&
        RegIdx.Index <= 31;
}

bool isGPRAsmReg() const {
  return isRegIdx() && RegIdx.Kind & RegKind_GPR && RegIdx.Index <= 31;
}

bool isMM16AsmReg() const {
  if (!(isRegIdx() && RegIdx.Kind))
    return false;
  return ((RegIdx.Index >= 2 && RegIdx.Index <= 7)
          || RegIdx.Index == 16 || RegIdx.Index == 17);

}
bool isMM16AsmRegZero() const {
  if (!(isRegIdx() && RegIdx.Kind))
    return false;
  return (RegIdx.Index == 0 ||
          (RegIdx.Index >= 2 && RegIdx.Index <= 7) ||
          RegIdx.Index == 17);
}

bool isMM16AsmRegMoveP() const {
  if (!(isRegIdx() && RegIdx.Kind))
    return false;
  return (RegIdx.Index == 0 || (RegIdx.Index >= 2 && RegIdx.Index <= 3) ||
    (RegIdx.Index >= 16 && RegIdx.Index <= 20));
}

bool isFGRAsmReg() const {
  // AFGR64 is $0-$15 but we handle this in getAFGR64()
  return isRegIdx() && RegIdx.Kind & RegKind_FGR && RegIdx.Index <= 31;
}

bool isStrictlyFGRAsmReg() const {
  // AFGR64 is $0-$15 but we handle this in getAFGR64()
  return isRegIdx() && RegIdx.Kind == RegKind_FGR && RegIdx.Index <= 31;
}

bool isHWRegsAsmReg() const {
  return isRegIdx() && RegIdx.Kind & RegKind_HWRegs && RegIdx.Index <= 31;
}

bool isCCRAsmReg() const {
  return isRegIdx() && RegIdx.Kind & RegKind_CCR && RegIdx.Index <= 31;
}

bool isFCCAsmReg() const {
  if (!(isRegIdx() && RegIdx.Kind & RegKind_FCC))
    return false;
  return RegIdx.Index <= 7;
}

bool isACCAsmReg() const {
  return isRegIdx() && RegIdx.Kind & RegKind_ACC && RegIdx.Index <= 3;
}

bool isCOP0AsmReg() const {
  return isRegIdx() && RegIdx.Kind & RegKind_COP0 && RegIdx.Index <= 31;
}

bool isCOP2AsmReg() const {
  return isRegIdx() && RegIdx.Kind & RegKind_COP2 && RegIdx.Index <= 31;
}

bool isCOP3AsmReg() const {
  return isRegIdx() && RegIdx.Kind & RegKind_COP3 && RegIdx.Index <= 31;
}

bool isMSA128AsmReg() const {
  return isRegIdx() && RegIdx.Kind & RegKind_MSA128 && RegIdx.Index <= 31;
}

bool isMSACtrlAsmReg() const {
  return isRegIdx() && RegIdx.Kind & RegKind_MSACtrl && RegIdx.Index <= 7;
}

/// getStartLoc - Get the location of the first token of this operand.
SMLoc getStartLoc() const override { return StartLoc; }
/// getEndLoc - Get the location of the last token of this operand.
SMLoc getEndLoc() const override { return EndLoc; }

void print(raw_ostream &OS) const override {
  switch (Kind) {
  case k_Immediate:
    OS << "Imm<";
    OS << *Imm.Val;
    OS << ">";
    break;
  case k_Memory:
    OS << "Mem<";
    Mem.Base->print(OS);
    OS << ", ";
    OS << *Mem.Off;
    OS << ">";
    break;
  case k_RegisterIndex:
    OS << "RegIdx<" << RegIdx.Index << ":" << RegIdx.Kind << ", "
       << StringRef(RegIdx.Tok.Data, RegIdx.Tok.Length) << ">";
    break;
  case k_Token:
    OS << getToken();
    break;
  case k_RegList:
    OS << "RegList< ";
    for (auto Reg : (*RegList.List))
      OS << Reg << " ";
    OS <<  ">";
    break;
  case k_RegPair:
    OS << "RegPair<" << RegIdx.Index << "," << RegIdx.Index + 1 << ">";
    break;
  }
}

bool isValidForTie(const MipsOperand &Other) const {
  if (Kind != Other.Kind)
    return false;

  switch (Kind) {
  default:
    llvm_unreachable("Unexpected kind")::llvm::llvm_unreachable_internal("Unexpected kind", "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1711);
    return false;
  case k_RegisterIndex: {
    StringRef Token(RegIdx.Tok.Data, RegIdx.Tok.Length);
    StringRef OtherToken(Other.RegIdx.Tok.Data, Other.RegIdx.Tok.Length);
    return Token == OtherToken;
  }
  }
}
1720}; // class MipsOperand

1722} // end anonymous namespace

1724namespace llvm {

1726extern const MCInstrDesc MipsInsts[];

1728} // end namespace llvm

1730static const MCInstrDesc &getInstDesc(unsigned Opcode) {
return MipsInsts[Opcode];
1732}

1734static bool hasShortDelaySlot(unsigned Opcode) {
switch (Opcode) {
  case Mips::JALS_MM:
  case Mips::JALRS_MM:
  case Mips::JALRS16_MM:
  case Mips::BGEZALS_MM:
  case Mips::BLTZALS_MM:
    return true;
  default:
    return false;
}
1745}

1747static const MCSymbol *getSingleMCSymbol(const MCExpr *Expr) {
if (const MCSymbolRefExpr *SRExpr = dyn_cast<MCSymbolRefExpr>(Expr)) {
  return &SRExpr->getSymbol();
}

if (const MCBinaryExpr *BExpr = dyn_cast<MCBinaryExpr>(Expr)) {
  const MCSymbol *LHSSym = getSingleMCSymbol(BExpr->getLHS());
  const MCSymbol *RHSSym = getSingleMCSymbol(BExpr->getRHS());

  if (LHSSym)
    return LHSSym;

  if (RHSSym)
    return RHSSym;

  return nullptr;
}

if (const MCUnaryExpr *UExpr = dyn_cast<MCUnaryExpr>(Expr))
  return getSingleMCSymbol(UExpr->getSubExpr());

return nullptr;
1769}

1771static unsigned countMCSymbolRefExpr(const MCExpr *Expr) {
if (isa<MCSymbolRefExpr>(Expr))
  return 1;

if (const MCBinaryExpr *BExpr = dyn_cast<MCBinaryExpr>(Expr))
  return countMCSymbolRefExpr(BExpr->getLHS()) +
         countMCSymbolRefExpr(BExpr->getRHS());

if (const MCUnaryExpr *UExpr = dyn_cast<MCUnaryExpr>(Expr))
  return countMCSymbolRefExpr(UExpr->getSubExpr());

return 0;
1783}

1785bool MipsAsmParser::processInstruction(MCInst &Inst, SMLoc IDLoc,
                                     MCStreamer &Out,
                                     const MCSubtargetInfo *STI) {
MipsTargetStreamer &TOut = getTargetStreamer();
const MCInstrDesc &MCID = getInstDesc(Inst.getOpcode());
bool ExpandedJalSym = false;

Inst.setLoc(IDLoc);

if (MCID.isBranch() || MCID.isCall()) {
  const unsigned Opcode = Inst.getOpcode();
  MCOperand Offset;

  switch (Opcode) {
  default:
    break;
  case Mips::BBIT0:
  case Mips::BBIT032:
  case Mips::BBIT1:
  case Mips::BBIT132:
    assert(hasCnMips() && "instruction only valid for octeon cpus")(static_cast <bool> (hasCnMips() && "instruction only valid for octeon cpus"
) ? void (0) : __assert_fail ("hasCnMips() && \"instruction only valid for octeon cpus\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1805, __extension__ __PRETTY_FUNCTION__));
    LLVM_FALLTHROUGH[[clang::fallthrough]];

  case Mips::BEQ:
  case Mips::BNE:
  case Mips::BEQ_MM:
  case Mips::BNE_MM:
    assert(MCID.getNumOperands() == 3 && "unexpected number of operands")(static_cast <bool> (MCID.getNumOperands() == 3 &&
 "unexpected number of operands") ? void (0) : __assert_fail (
"MCID.getNumOperands() == 3 && \"unexpected number of operands\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1812, __extension__ __PRETTY_FUNCTION__));
    Offset = Inst.getOperand(2);
    if (!Offset.isImm())
      break; // We'll deal with this situation later on when applying fixups.
    if (!isIntN(inMicroMipsMode() ? 17 : 18, Offset.getImm()))
      return Error(IDLoc, "branch target out of range");
    if (OffsetToAlignment(Offset.getImm(),
                          1LL << (inMicroMipsMode() ? 1 : 2)))
      return Error(IDLoc, "branch to misaligned address");
    break;
  case Mips::BGEZ:
  case Mips::BGTZ:
  case Mips::BLEZ:
  case Mips::BLTZ:
  case Mips::BGEZAL:
  case Mips::BLTZAL:
  case Mips::BC1F:
  case Mips::BC1T:
  case Mips::BGEZ_MM:
  case Mips::BGTZ_MM:
  case Mips::BLEZ_MM:
  case Mips::BLTZ_MM:
  case Mips::BGEZAL_MM:
  case Mips::BLTZAL_MM:
  case Mips::BC1F_MM:
  case Mips::BC1T_MM:
  case Mips::BC1EQZC_MMR6:
  case Mips::BC1NEZC_MMR6:
  case Mips::BC2EQZC_MMR6:
  case Mips::BC2NEZC_MMR6:
    assert(MCID.getNumOperands() == 2 && "unexpected number of operands")(static_cast <bool> (MCID.getNumOperands() == 2 &&
 "unexpected number of operands") ? void (0) : __assert_fail (
"MCID.getNumOperands() == 2 && \"unexpected number of operands\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1842, __extension__ __PRETTY_FUNCTION__));
    Offset = Inst.getOperand(1);
    if (!Offset.isImm())
      break; // We'll deal with this situation later on when applying fixups.
    if (!isIntN(inMicroMipsMode() ? 17 : 18, Offset.getImm()))
      return Error(IDLoc, "branch target out of range");
    if (OffsetToAlignment(Offset.getImm(),
                          1LL << (inMicroMipsMode() ? 1 : 2)))
      return Error(IDLoc, "branch to misaligned address");
    break;
  case Mips::BGEC:    case Mips::BGEC_MMR6:
  case Mips::BLTC:    case Mips::BLTC_MMR6:
  case Mips::BGEUC:   case Mips::BGEUC_MMR6:
  case Mips::BLTUC:   case Mips::BLTUC_MMR6:
  case Mips::BEQC:    case Mips::BEQC_MMR6:
  case Mips::BNEC:    case Mips::BNEC_MMR6:
    assert(MCID.getNumOperands() == 3 && "unexpected number of operands")(static_cast <bool> (MCID.getNumOperands() == 3 &&
 "unexpected number of operands") ? void (0) : __assert_fail (
"MCID.getNumOperands() == 3 && \"unexpected number of operands\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1858, __extension__ __PRETTY_FUNCTION__));
    Offset = Inst.getOperand(2);
    if (!Offset.isImm())
      break; // We'll deal with this situation later on when applying fixups.
    if (!isIntN(18, Offset.getImm()))
      return Error(IDLoc, "branch target out of range");
    if (OffsetToAlignment(Offset.getImm(), 1LL << 2))
      return Error(IDLoc, "branch to misaligned address");
    break;
  case Mips::BLEZC:   case Mips::BLEZC_MMR6:
  case Mips::BGEZC:   case Mips::BGEZC_MMR6:
  case Mips::BGTZC:   case Mips::BGTZC_MMR6:
  case Mips::BLTZC:   case Mips::BLTZC_MMR6:
    assert(MCID.getNumOperands() == 2 && "unexpected number of operands")(static_cast <bool> (MCID.getNumOperands() == 2 &&
 "unexpected number of operands") ? void (0) : __assert_fail (
"MCID.getNumOperands() == 2 && \"unexpected number of operands\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1871, __extension__ __PRETTY_FUNCTION__));
    Offset = Inst.getOperand(1);
    if (!Offset.isImm())
      break; // We'll deal with this situation later on when applying fixups.
    if (!isIntN(18, Offset.getImm()))
      return Error(IDLoc, "branch target out of range");
    if (OffsetToAlignment(Offset.getImm(), 1LL << 2))
      return Error(IDLoc, "branch to misaligned address");
    break;
  case Mips::BEQZC:   case Mips::BEQZC_MMR6:
  case Mips::BNEZC:   case Mips::BNEZC_MMR6:
    assert(MCID.getNumOperands() == 2 && "unexpected number of operands")(static_cast <bool> (MCID.getNumOperands() == 2 &&
 "unexpected number of operands") ? void (0) : __assert_fail (
"MCID.getNumOperands() == 2 && \"unexpected number of operands\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1882, __extension__ __PRETTY_FUNCTION__));
    Offset = Inst.getOperand(1);
    if (!Offset.isImm())
      break; // We'll deal with this situation later on when applying fixups.
    if (!isIntN(23, Offset.getImm()))
      return Error(IDLoc, "branch target out of range");
    if (OffsetToAlignment(Offset.getImm(), 1LL << 2))
      return Error(IDLoc, "branch to misaligned address");
    break;
  case Mips::BEQZ16_MM:
  case Mips::BEQZC16_MMR6:
  case Mips::BNEZ16_MM:
  case Mips::BNEZC16_MMR6:
    assert(MCID.getNumOperands() == 2 && "unexpected number of operands")(static_cast <bool> (MCID.getNumOperands() == 2 &&
 "unexpected number of operands") ? void (0) : __assert_fail (
"MCID.getNumOperands() == 2 && \"unexpected number of operands\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1895, __extension__ __PRETTY_FUNCTION__));
    Offset = Inst.getOperand(1);
    if (!Offset.isImm())
      break; // We'll deal with this situation later on when applying fixups.
    if (!isInt<8>(Offset.getImm()))
      return Error(IDLoc, "branch target out of range");
    if (OffsetToAlignment(Offset.getImm(), 2LL))
      return Error(IDLoc, "branch to misaligned address");
    break;
  }
}

// SSNOP is deprecated on MIPS32r6/MIPS64r6
// We still accept it but it is a normal nop.
if (hasMips32r6() && Inst.getOpcode() == Mips::SSNOP) {
  std::string ISA = hasMips64r6() ? "MIPS64r6" : "MIPS32r6";
  Warning(IDLoc, "ssnop is deprecated for " + ISA + " and is equivalent to a "
                                                    "nop instruction");
}

if (hasCnMips()) {
  const unsigned Opcode = Inst.getOpcode();
  MCOperand Opnd;
  int Imm;

  switch (Opcode) {
    default:
      break;

    case Mips::BBIT0:
    case Mips::BBIT032:
    case Mips::BBIT1:
    case Mips::BBIT132:
      assert(MCID.getNumOperands() == 3 && "unexpected number of operands")(static_cast <bool> (MCID.getNumOperands() == 3 &&
 "unexpected number of operands") ? void (0) : __assert_fail (
"MCID.getNumOperands() == 3 && \"unexpected number of operands\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1928, __extension__ __PRETTY_FUNCTION__));
      // The offset is handled above
      Opnd = Inst.getOperand(1);
      if (!Opnd.isImm())
        return Error(IDLoc, "expected immediate operand kind");
      Imm = Opnd.getImm();
      if (Imm < 0 || Imm > (Opcode == Mips::BBIT0 ||
                            Opcode == Mips::BBIT1 ? 63 : 31))
        return Error(IDLoc, "immediate operand value out of range");
      if (Imm > 31) {
        Inst.setOpcode(Opcode == Mips::BBIT0 ? Mips::BBIT032
                                             : Mips::BBIT132);
        Inst.getOperand(1).setImm(Imm - 32);
      }
      break;

    case Mips::SEQi:
    case Mips::SNEi:
      assert(MCID.getNumOperands() == 3 && "unexpected number of operands")(static_cast <bool> (MCID.getNumOperands() == 3 &&
 "unexpected number of operands") ? void (0) : __assert_fail (
"MCID.getNumOperands() == 3 && \"unexpected number of operands\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 1946, __extension__ __PRETTY_FUNCTION__));
      Opnd = Inst.getOperand(2);
      if (!Opnd.isImm())
        return Error(IDLoc, "expected immediate operand kind");
      Imm = Opnd.getImm();
      if (!isInt<10>(Imm))
        return Error(IDLoc, "immediate operand value out of range");
      break;
  }
}

// Warn on division by zero. We're checking here as all instructions get
// processed here, not just the macros that need expansion.
//
// The MIPS backend models most of the divison instructions and macros as
// three operand instructions. The pre-R6 divide instructions however have
// two operands and explicitly define HI/LO as part of the instruction,
// not in the operands.
unsigned FirstOp = 1;
unsigned SecondOp = 2;
switch (Inst.getOpcode()) {
default:
  break;
case Mips::SDivIMacro:
case Mips::UDivIMacro:
case Mips::DSDivIMacro:
case Mips::DUDivIMacro:
  if (Inst.getOperand(2).getImm() == 0) {
    if (Inst.getOperand(1).getReg() == Mips::ZERO ||
        Inst.getOperand(1).getReg() == Mips::ZERO_64)
      Warning(IDLoc, "dividing zero by zero");
    else
      Warning(IDLoc, "division by zero");
  }
  break;
case Mips::DSDIV:
case Mips::SDIV:
case Mips::UDIV:
case Mips::DUDIV:
case Mips::UDIV_MM:
case Mips::SDIV_MM:
  FirstOp = 0;
  SecondOp = 1;
  LLVM_FALLTHROUGH[[clang::fallthrough]];
case Mips::SDivMacro:
case Mips::DSDivMacro:
case Mips::UDivMacro:
case Mips::DUDivMacro:
case Mips::DIV:
case Mips::DIVU:
case Mips::DDIV:
case Mips::DDIVU:
case Mips::DIVU_MMR6:
case Mips::DIV_MMR6:
  if (Inst.getOperand(SecondOp).getReg() == Mips::ZERO ||
      Inst.getOperand(SecondOp).getReg() == Mips::ZERO_64) {
    if (Inst.getOperand(FirstOp).getReg() == Mips::ZERO ||
        Inst.getOperand(FirstOp).getReg() == Mips::ZERO_64)
      Warning(IDLoc, "dividing zero by zero");
    else
      Warning(IDLoc, "division by zero");
  }
  break;
}

// For PIC code convert unconditional jump to unconditional branch.
if ((Inst.getOpcode() == Mips::J || Inst.getOpcode() == Mips::J_MM) &&
    inPicMode()) {
  MCInst BInst;
  BInst.setOpcode(inMicroMipsMode() ? Mips::BEQ_MM : Mips::BEQ);
  BInst.addOperand(MCOperand::createReg(Mips::ZERO));
  BInst.addOperand(MCOperand::createReg(Mips::ZERO));
  BInst.addOperand(Inst.getOperand(0));
  Inst = BInst;
}

// This expansion is not in a function called by tryExpandInstruction()
// because the pseudo-instruction doesn't have a distinct opcode.
if ((Inst.getOpcode() == Mips::JAL || Inst.getOpcode() == Mips::JAL_MM) &&
    inPicMode()) {
  warnIfNoMacro(IDLoc);

  const MCExpr *JalExpr = Inst.getOperand(0).getExpr();

  // We can do this expansion if there's only 1 symbol in the argument
  // expression.
  if (countMCSymbolRefExpr(JalExpr) > 1)
    return Error(IDLoc, "jal doesn't support multiple symbols in PIC mode");

  // FIXME: This is checking the expression can be handled by the later stages
  //        of the assembler. We ought to leave it to those later stages.
  const MCSymbol *JalSym = getSingleMCSymbol(JalExpr);

  // FIXME: Add support for label+offset operands (currently causes an error).
  // FIXME: Add support for forward-declared local symbols.
  // FIXME: Add expansion for when the LargeGOT option is enabled.
  if (JalSym->isInSection() || JalSym->isTemporary() ||
      (JalSym->isELF() && cast<MCSymbolELF>(JalSym)->getBinding() == ELF::STB_LOCAL)) {
    if (isABI_O32()) {
      // If it's a local symbol and the O32 ABI is being used, we expand to:
      //  lw $25, 0($gp)
      //    R_(MICRO)MIPS_GOT16  label
      //  addiu $25, $25, 0
      //    R_(MICRO)MIPS_LO16   label
      //  jalr  $25
      const MCExpr *Got16RelocExpr =
          MipsMCExpr::create(MipsMCExpr::MEK_GOT, JalExpr, getContext());
      const MCExpr *Lo16RelocExpr =
          MipsMCExpr::create(MipsMCExpr::MEK_LO, JalExpr, getContext());

      TOut.emitRRX(Mips::LW, Mips::T9, Mips::GP,
                   MCOperand::createExpr(Got16RelocExpr), IDLoc, STI);
      TOut.emitRRX(Mips::ADDiu, Mips::T9, Mips::T9,
                   MCOperand::createExpr(Lo16RelocExpr), IDLoc, STI);
    } else if (isABI_N32() || isABI_N64()) {
      // If it's a local symbol and the N32/N64 ABIs are being used,
      // we expand to:
      //  lw/ld $25, 0($gp)
      //    R_(MICRO)MIPS_GOT_DISP  label
      //  jalr  $25
      const MCExpr *GotDispRelocExpr =
          MipsMCExpr::create(MipsMCExpr::MEK_GOT_DISP, JalExpr, getContext());

      TOut.emitRRX(ABI.ArePtrs64bit() ? Mips::LD : Mips::LW, Mips::T9,
                   Mips::GP, MCOperand::createExpr(GotDispRelocExpr), IDLoc,
                   STI);
    }
  } else {
    // If it's an external/weak symbol, we expand to:
    //  lw/ld    $25, 0($gp)
    //    R_(MICRO)MIPS_CALL16  label
    //  jalr  $25
    const MCExpr *Call16RelocExpr =
        MipsMCExpr::create(MipsMCExpr::MEK_GOT_CALL, JalExpr, getContext());

    TOut.emitRRX(ABI.ArePtrs64bit() ? Mips::LD : Mips::LW, Mips::T9, Mips::GP,
                 MCOperand::createExpr(Call16RelocExpr), IDLoc, STI);
  }

  MCInst JalrInst;
  if (IsCpRestoreSet && inMicroMipsMode())
    JalrInst.setOpcode(Mips::JALRS_MM);
  else
    JalrInst.setOpcode(inMicroMipsMode() ? Mips::JALR_MM : Mips::JALR);
  JalrInst.addOperand(MCOperand::createReg(Mips::RA));
  JalrInst.addOperand(MCOperand::createReg(Mips::T9));

  // FIXME: Add an R_(MICRO)MIPS_JALR relocation after the JALR.
  // This relocation is supposed to be an optimization hint for the linker
  // and is not necessary for correctness.

  Inst = JalrInst;
  ExpandedJalSym = true;
}

bool IsPCRelativeLoad = (MCID.TSFlags & MipsII::IsPCRelativeLoad) != 0;
if ((MCID.mayLoad() || MCID.mayStore()) && !IsPCRelativeLoad) {
  // Check the offset of memory operand, if it is a symbol
  // reference or immediate we may have to expand instructions.
  for (unsigned i = 0; i < MCID.getNumOperands(); i++) {
    const MCOperandInfo &OpInfo = MCID.OpInfo[i];
    if ((OpInfo.OperandType == MCOI::OPERAND_MEMORY) ||
        (OpInfo.OperandType == MCOI::OPERAND_UNKNOWN)) {
      MCOperand &Op = Inst.getOperand(i);
      if (Op.isImm()) {
        int MemOffset = Op.getImm();
        if (MemOffset < -32768 || MemOffset > 32767) {
          // Offset can't exceed 16bit value.
          expandMemInst(Inst, IDLoc, Out, STI, MCID.mayLoad(), true);
          return getParser().hasPendingError();
        }
      } else if (Op.isExpr()) {
        const MCExpr *Expr = Op.getExpr();
        if (Expr->getKind() == MCExpr::SymbolRef) {
          const MCSymbolRefExpr *SR =
              static_cast<const MCSymbolRefExpr *>(Expr);
          if (SR->getKind() == MCSymbolRefExpr::VK_None) {
            // Expand symbol.
            expandMemInst(Inst, IDLoc, Out, STI, MCID.mayLoad(), false);
            return getParser().hasPendingError();
          }
        } else if (!isEvaluated(Expr)) {
          expandMemInst(Inst, IDLoc, Out, STI, MCID.mayLoad(), false);
          return getParser().hasPendingError();
        }
      }
    }
  } // for
}   // if load/store

if (inMicroMipsMode()) {
  if (MCID.mayLoad()) {
    // Try to create 16-bit GP relative load instruction.
    for (unsigned i = 0; i < MCID.getNumOperands(); i++) {
      const MCOperandInfo &OpInfo = MCID.OpInfo[i];
      if ((OpInfo.OperandType == MCOI::OPERAND_MEMORY) ||
          (OpInfo.OperandType == MCOI::OPERAND_UNKNOWN)) {
        MCOperand &Op = Inst.getOperand(i);
        if (Op.isImm()) {
          int MemOffset = Op.getImm();
          MCOperand &DstReg = Inst.getOperand(0);
          MCOperand &BaseReg = Inst.getOperand(1);
          if (isInt<9>(MemOffset) && (MemOffset % 4 == 0) &&
              getContext().getRegisterInfo()->getRegClass(
                Mips::GPRMM16RegClassID).contains(DstReg.getReg()) &&
              (BaseReg.getReg() == Mips::GP ||
              BaseReg.getReg() == Mips::GP_64)) {

            TOut.emitRRI(Mips::LWGP_MM, DstReg.getReg(), Mips::GP, MemOffset,
                         IDLoc, STI);
            return false;
          }
        }
      }
    } // for
  }   // if load

  // TODO: Handle this with the AsmOperandClass.PredicateMethod.

  MCOperand Opnd;
  int Imm;

  switch (Inst.getOpcode()) {
    default:
      break;
    case Mips::ADDIUSP_MM:
      Opnd = Inst.getOperand(0);
      if (!Opnd.isImm())
        return Error(IDLoc, "expected immediate operand kind");
      Imm = Opnd.getImm();
      if (Imm < -1032 || Imm > 1028 || (Imm < 8 && Imm > -12) ||
          Imm % 4 != 0)
        return Error(IDLoc, "immediate operand value out of range");
      break;
    case Mips::SLL16_MM:
    case Mips::SRL16_MM:
      Opnd = Inst.getOperand(2);
      if (!Opnd.isImm())
        return Error(IDLoc, "expected immediate operand kind");
      Imm = Opnd.getImm();
      if (Imm < 1 || Imm > 8)
        return Error(IDLoc, "immediate operand value out of range");
      break;
    case Mips::LI16_MM:
      Opnd = Inst.getOperand(1);
      if (!Opnd.isImm())
        return Error(IDLoc, "expected immediate operand kind");
      Imm = Opnd.getImm();
      if (Imm < -1 || Imm > 126)
        return Error(IDLoc, "immediate operand value out of range");
      break;
    case Mips::ADDIUR2_MM:
      Opnd = Inst.getOperand(2);
      if (!Opnd.isImm())
        return Error(IDLoc, "expected immediate operand kind");
      Imm = Opnd.getImm();
      if (!(Imm == 1 || Imm == -1 ||
            ((Imm % 4 == 0) && Imm < 28 && Imm > 0)))
        return Error(IDLoc, "immediate operand value out of range");
      break;
    case Mips::ANDI16_MM:
      Opnd = Inst.getOperand(2);
      if (!Opnd.isImm())
        return Error(IDLoc, "expected immediate operand kind");
      Imm = Opnd.getImm();
      if (!(Imm == 128 || (Imm >= 1 && Imm <= 4) || Imm == 7 || Imm == 8 ||
            Imm == 15 || Imm == 16 || Imm == 31 || Imm == 32 || Imm == 63 ||
            Imm == 64 || Imm == 255 || Imm == 32768 || Imm == 65535))
        return Error(IDLoc, "immediate operand value out of range");
      break;
    case Mips::LBU16_MM:
      Opnd = Inst.getOperand(2);
      if (!Opnd.isImm())
        return Error(IDLoc, "expected immediate operand kind");
      Imm = Opnd.getImm();
      if (Imm < -1 || Imm > 14)
        return Error(IDLoc, "immediate operand value out of range");
      break;
    case Mips::SB16_MM:
    case Mips::SB16_MMR6:
      Opnd = Inst.getOperand(2);
      if (!Opnd.isImm())
        return Error(IDLoc, "expected immediate operand kind");
      Imm = Opnd.getImm();
      if (Imm < 0 || Imm > 15)
        return Error(IDLoc, "immediate operand value out of range");
      break;
    case Mips::LHU16_MM:
    case Mips::SH16_MM:
    case Mips::SH16_MMR6:
      Opnd = Inst.getOperand(2);
      if (!Opnd.isImm())
        return Error(IDLoc, "expected immediate operand kind");
      Imm = Opnd.getImm();
      if (Imm < 0 || Imm > 30 || (Imm % 2 != 0))
        return Error(IDLoc, "immediate operand value out of range");
      break;
    case Mips::LW16_MM:
    case Mips::SW16_MM:
    case Mips::SW16_MMR6:
      Opnd = Inst.getOperand(2);
      if (!Opnd.isImm())
        return Error(IDLoc, "expected immediate operand kind");
      Imm = Opnd.getImm();
      if (Imm < 0 || Imm > 60 || (Imm % 4 != 0))
        return Error(IDLoc, "immediate operand value out of range");
      break;
    case Mips::ADDIUPC_MM:
      MCOperand Opnd = Inst.getOperand(1);
      if (!Opnd.isImm())
        return Error(IDLoc, "expected immediate operand kind");
      int Imm = Opnd.getImm();
      if ((Imm % 4 != 0) || !isInt<25>(Imm))
        return Error(IDLoc, "immediate operand value out of range");
      break;
  }
}

bool FillDelaySlot =
    MCID.hasDelaySlot() && AssemblerOptions.back()->isReorder();
if (FillDelaySlot)
  TOut.emitDirectiveSetNoReorder();

MacroExpanderResultTy ExpandResult =
    tryExpandInstruction(Inst, IDLoc, Out, STI);
switch (ExpandResult) {
case MER_NotAMacro:
  Out.EmitInstruction(Inst, *STI);
  break;
case MER_Success:
  break;
case MER_Fail:
  return true;
}

// We know we emitted an instruction on the MER_NotAMacro or MER_Success path.
// If we're in microMIPS mode then we must also set EF_MIPS_MICROMIPS.
if (inMicroMipsMode()) {
  TOut.setUsesMicroMips();
  TOut.updateABIInfo(*this);
}

// If this instruction has a delay slot and .set reorder is active,
// emit a NOP after it.
if (FillDelaySlot) {
  TOut.emitEmptyDelaySlot(hasShortDelaySlot(Inst.getOpcode()), IDLoc, STI);
  TOut.emitDirectiveSetReorder();
}

if ((Inst.getOpcode() == Mips::JalOneReg ||
     Inst.getOpcode() == Mips::JalTwoReg || ExpandedJalSym) &&
    isPicAndNotNxxAbi()) {
  if (IsCpRestoreSet) {
    // We need a NOP between the JALR and the LW:
    // If .set reorder has been used, we've already emitted a NOP.
    // If .set noreorder has been used, we need to emit a NOP at this point.
    if (!AssemblerOptions.back()->isReorder())
      TOut.emitEmptyDelaySlot(hasShortDelaySlot(Inst.getOpcode()), IDLoc,
                              STI);

    // Load the $gp from the stack.
    TOut.emitGPRestore(CpRestoreOffset, IDLoc, STI);
  } else
    Warning(IDLoc, "no .cprestore used in PIC mode");
}

return false;
2313}

2315MipsAsmParser::MacroExpanderResultTy
2316MipsAsmParser::tryExpandInstruction(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
                                  const MCSubtargetInfo *STI) {
switch (Inst.getOpcode()) {
default:
  return MER_NotAMacro;
case Mips::LoadImm32:
  return expandLoadImm(Inst, true, IDLoc, Out, STI) ? MER_Fail : MER_Success;
case Mips::LoadImm64:
  return expandLoadImm(Inst, false, IDLoc, Out, STI) ? MER_Fail : MER_Success;
case Mips::LoadAddrImm32:
case Mips::LoadAddrImm64:
  assert(Inst.getOperand(0).isReg() && "expected register operand kind")(static_cast <bool> (Inst.getOperand(0).isReg() &&
 "expected register operand kind") ? void (0) : __assert_fail
 ("Inst.getOperand(0).isReg() && \"expected register operand kind\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 2327, __extension__ __PRETTY_FUNCTION__));
  assert((Inst.getOperand(1).isImm() || Inst.getOperand(1).isExpr()) &&(static_cast <bool> ((Inst.getOperand(1).isImm() || Inst
.getOperand(1).isExpr()) && "expected immediate operand kind"
) ? void (0) : __assert_fail ("(Inst.getOperand(1).isImm() || Inst.getOperand(1).isExpr()) && \"expected immediate operand kind\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 2329, __extension__ __PRETTY_FUNCTION__))
         "expected immediate operand kind")(static_cast <bool> ((Inst.getOperand(1).isImm() || Inst
.getOperand(1).isExpr()) && "expected immediate operand kind"
) ? void (0) : __assert_fail ("(Inst.getOperand(1).isImm() || Inst.getOperand(1).isExpr()) && \"expected immediate operand kind\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 2329, __extension__ __PRETTY_FUNCTION__));

  return expandLoadAddress(Inst.getOperand(0).getReg(), Mips::NoRegister,
                           Inst.getOperand(1),
                           Inst.getOpcode() == Mips::LoadAddrImm32, IDLoc,
                           Out, STI)
             ? MER_Fail
             : MER_Success;
case Mips::LoadAddrReg32:
case Mips::LoadAddrReg64:
  assert(Inst.getOperand(0).isReg() && "expected register operand kind")(static_cast <bool> (Inst.getOperand(0).isReg() &&
 "expected register operand kind") ? void (0) : __assert_fail
 ("Inst.getOperand(0).isReg() && \"expected register operand kind\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 2339, __extension__ __PRETTY_FUNCTION__));
  assert(Inst.getOperand(1).isReg() && "expected register operand kind")(static_cast <bool> (Inst.getOperand(1).isReg() &&
 "expected register operand kind") ? void (0) : __assert_fail
 ("Inst.getOperand(1).isReg() && \"expected register operand kind\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 2340, __extension__ __PRETTY_FUNCTION__));
  assert((Inst.getOperand(2).isImm() || Inst.getOperand(2).isExpr()) &&(static_cast <bool> ((Inst.getOperand(2).isImm() || Inst
.getOperand(2).isExpr()) && "expected immediate operand kind"
) ? void (0) : __assert_fail ("(Inst.getOperand(2).isImm() || Inst.getOperand(2).isExpr()) && \"expected immediate operand kind\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 2342, __extension__ __PRETTY_FUNCTION__))
         "expected immediate operand kind")(static_cast <bool> ((Inst.getOperand(2).isImm() || Inst
.getOperand(2).isExpr()) && "expected immediate operand kind"
) ? void (0) : __assert_fail ("(Inst.getOperand(2).isImm() || Inst.getOperand(2).isExpr()) && \"expected immediate operand kind\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 2342, __extension__ __PRETTY_FUNCTION__));

  return expandLoadAddress(Inst.getOperand(0).getReg(),
                           Inst.getOperand(1).getReg(), Inst.getOperand(2),
                           Inst.getOpcode() == Mips::LoadAddrReg32, IDLoc,
                           Out, STI)
             ? MER_Fail
             : MER_Success;
case Mips::B_MM_Pseudo:
case Mips::B_MMR6_Pseudo:
  return expandUncondBranchMMPseudo(Inst, IDLoc, Out, STI) ? MER_Fail
                                                           : MER_Success;
case Mips::SWM_MM:
case Mips::LWM_MM:
  return expandLoadStoreMultiple(Inst, IDLoc, Out, STI) ? MER_Fail
                                                        : MER_Success;
case Mips::JalOneReg:
case Mips::JalTwoReg:
  return expandJalWithRegs(Inst, IDLoc, Out, STI) ? MER_Fail : MER_Success;
case Mips::BneImm:
case Mips::BeqImm:
case Mips::BEQLImmMacro:
case Mips::BNELImmMacro:
  return expandBranchImm(Inst, IDLoc, Out, STI) ? MER_Fail : MER_Success;
case Mips::BLT:
case Mips::BLE:
case Mips::BGE:
case Mips::BGT:
case Mips::BLTU:
case Mips::BLEU:
case Mips::BGEU:
case Mips::BGTU:
case Mips::BLTL:
case Mips::BLEL:
case Mips::BGEL:
case Mips::BGTL:
case Mips::BLTUL:
case Mips::BLEUL:
case Mips::BGEUL:
case Mips::BGTUL:
case Mips::BLTImmMacro:
case Mips::BLEImmMacro:
case Mips::BGEImmMacro:
case Mips::BGTImmMacro:
case Mips::BLTUImmMacro:
case Mips::BLEUImmMacro:
case Mips::BGEUImmMacro:
case Mips::BGTUImmMacro:
case Mips::BLTLImmMacro:
case Mips::BLELImmMacro:
case Mips::BGELImmMacro:
case Mips::BGTLImmMacro:
case Mips::BLTULImmMacro:
case Mips::BLEULImmMacro:
case Mips::BGEULImmMacro:
case Mips::BGTULImmMacro:
  return expandCondBranches(Inst, IDLoc, Out, STI) ? MER_Fail : MER_Success;
case Mips::SDivMacro:
case Mips::SDivIMacro:
  return expandDiv(Inst, IDLoc, Out, STI, false, true) ? MER_Fail
                                                       : MER_Success;
case Mips::DSDivMacro:
case Mips::DSDivIMacro:
  return expandDiv(Inst, IDLoc, Out, STI, true, true) ? MER_Fail
                                                      : MER_Success;
case Mips::UDivMacro:
case Mips::UDivIMacro:
  return expandDiv(Inst, IDLoc, Out, STI, false, false) ? MER_Fail
                                                        : MER_Success;
case Mips::DUDivMacro:
case Mips::DUDivIMacro:
  return expandDiv(Inst, IDLoc, Out, STI, true, false) ? MER_Fail
                                                       : MER_Success;
case Mips::PseudoTRUNC_W_S:
  return expandTrunc(Inst, false, false, IDLoc, Out, STI) ? MER_Fail
                                                          : MER_Success;
case Mips::PseudoTRUNC_W_D32:
  return expandTrunc(Inst, true, false, IDLoc, Out, STI) ? MER_Fail
                                                         : MER_Success;
case Mips::PseudoTRUNC_W_D:
  return expandTrunc(Inst, true, true, IDLoc, Out, STI) ? MER_Fail
                                                        : MER_Success;

case Mips::LoadImmSingleGPR:
  return expandLoadImmReal(Inst, true, true, false, IDLoc, Out, STI)
             ? MER_Fail
             : MER_Success;
case Mips::LoadImmSingleFGR:
  return expandLoadImmReal(Inst, true, false, false, IDLoc, Out, STI)
             ? MER_Fail
             : MER_Success;
case Mips::LoadImmDoubleGPR:
  return expandLoadImmReal(Inst, false, true, false, IDLoc, Out, STI)
             ? MER_Fail
             : MER_Success;
case Mips::LoadImmDoubleFGR:
    return expandLoadImmReal(Inst, false, false, true, IDLoc, Out, STI)
             ? MER_Fail
             : MER_Success;
case Mips::LoadImmDoubleFGR_32:
  return expandLoadImmReal(Inst, false, false, false, IDLoc, Out, STI)
             ? MER_Fail
             : MER_Success;
case Mips::Ulh:
  return expandUlh(Inst, true, IDLoc, Out, STI) ? MER_Fail : MER_Success;
case Mips::Ulhu:
  return expandUlh(Inst, false, IDLoc, Out, STI) ? MER_Fail : MER_Success;
case Mips::Ush:
  return expandUsh(Inst, IDLoc, Out, STI) ? MER_Fail : MER_Success;
case Mips::Ulw:
case Mips::Usw:
  return expandUxw(Inst, IDLoc, Out, STI) ? MER_Fail : MER_Success;
case Mips::NORImm:
case Mips::NORImm64:
  return expandAliasImmediate(Inst, IDLoc, Out, STI) ? MER_Fail : MER_Success;
case Mips::SLTImm64:
  if (isInt<16>(Inst.getOperand(2).getImm())) {
    Inst.setOpcode(Mips::SLTi64);
    return MER_NotAMacro;
  }
  return expandAliasImmediate(Inst, IDLoc, Out, STI) ? MER_Fail : MER_Success;
case Mips::SLTUImm64:
  if (isInt<16>(Inst.getOperand(2).getImm())) {
    Inst.setOpcode(Mips::SLTiu64);
    return MER_NotAMacro;
  }
  return expandAliasImmediate(Inst, IDLoc, Out, STI) ? MER_Fail : MER_Success;
case Mips::ADDi:   case Mips::ADDi_MM:
case Mips::ADDiu:  case Mips::ADDiu_MM:
case Mips::SLTi:   case Mips::SLTi_MM:
case Mips::SLTiu:  case Mips::SLTiu_MM:
  if ((Inst.getNumOperands() == 3) && Inst.getOperand(0).isReg() &&
      Inst.getOperand(1).isReg() && Inst.getOperand(2).isImm()) {
    int64_t ImmValue = Inst.getOperand(2).getImm();
    if (isInt<16>(ImmValue))
      return MER_NotAMacro;
    return expandAliasImmediate(Inst, IDLoc, Out, STI) ? MER_Fail
                                                       : MER_Success;
  }
  return MER_NotAMacro;
case Mips::ANDi:  case Mips::ANDi_MM:  case Mips::ANDi64:
case Mips::ORi:   case Mips::ORi_MM:   case Mips::ORi64:
case Mips::XORi:  case Mips::XORi_MM:  case Mips::XORi64:
  if ((Inst.getNumOperands() == 3) && Inst.getOperand(0).isReg() &&
      Inst.getOperand(1).isReg() && Inst.getOperand(2).isImm()) {
    int64_t ImmValue = Inst.getOperand(2).getImm();
    if (isUInt<16>(ImmValue))
      return MER_NotAMacro;
    return expandAliasImmediate(Inst, IDLoc, Out, STI) ? MER_Fail
                                                       : MER_Success;
  }
  return MER_NotAMacro;
case Mips::ROL:
case Mips::ROR:
  return expandRotation(Inst, IDLoc, Out, STI) ? MER_Fail : MER_Success;
case Mips::ROLImm:
case Mips::RORImm:
  return expandRotationImm(Inst, IDLoc, Out, STI) ? MER_Fail : MER_Success;
case Mips::DROL:
case Mips::DROR:
  return expandDRotation(Inst, IDLoc, Out, STI) ? MER_Fail : MER_Success;
case Mips::DROLImm:
case Mips::DRORImm:
  return expandDRotationImm(Inst, IDLoc, Out, STI) ? MER_Fail : MER_Success;
case Mips::ABSMacro:
  return expandAbs(Inst, IDLoc, Out, STI) ? MER_Fail : MER_Success;
case Mips::MULImmMacro:
case Mips::DMULImmMacro:
  return expandMulImm(Inst, IDLoc, Out, STI) ? MER_Fail : MER_Success;
case Mips::MULOMacro:
case Mips::DMULOMacro:
  return expandMulO(Inst, IDLoc, Out, STI) ? MER_Fail : MER_Success;
case Mips::MULOUMacro:
case Mips::DMULOUMacro:
  return expandMulOU(Inst, IDLoc, Out, STI) ? MER_Fail : MER_Success;
case Mips::DMULMacro:
  return expandDMULMacro(Inst, IDLoc, Out, STI) ? MER_Fail : MER_Success;
case Mips::LDMacro:
case Mips::SDMacro:
  return expandLoadStoreDMacro(Inst, IDLoc, Out, STI,
                               Inst.getOpcode() == Mips::LDMacro)
             ? MER_Fail
             : MER_Success;
case Mips::SEQMacro:
  return expandSeq(Inst, IDLoc, Out, STI) ? MER_Fail : MER_Success;
case Mips::SEQIMacro:
  return expandSeqI(Inst, IDLoc, Out, STI) ? MER_Fail : MER_Success;
case Mips::MFTC0:   case Mips::MTTC0:
case Mips::MFTGPR:  case Mips::MTTGPR:
case Mips::MFTLO:   case Mips::MTTLO:
case Mips::MFTHI:   case Mips::MTTHI:
case Mips::MFTACX:  case Mips::MTTACX:
case Mips::MFTDSP:  case Mips::MTTDSP:
case Mips::MFTC1:   case Mips::MTTC1:
case Mips::MFTHC1:  case Mips::MTTHC1:
case Mips::CFTC1:   case Mips::CTTC1:
  return expandMXTRAlias(Inst, IDLoc, Out, STI) ? MER_Fail : MER_Success;
}
2540}

2542bool MipsAsmParser::expandJalWithRegs(MCInst &Inst, SMLoc IDLoc,
                                    MCStreamer &Out,
                                    const MCSubtargetInfo *STI) {
MipsTargetStreamer &TOut = getTargetStreamer();

// Create a JALR instruction which is going to replace the pseudo-JAL.
MCInst JalrInst;
JalrInst.setLoc(IDLoc);
const MCOperand FirstRegOp = Inst.getOperand(0);
const unsigned Opcode = Inst.getOpcode();

if (Opcode == Mips::JalOneReg) {
  // jal $rs => jalr $rs
  if (IsCpRestoreSet && inMicroMipsMode()) {
    JalrInst.setOpcode(Mips::JALRS16_MM);
    JalrInst.addOperand(FirstRegOp);
  } else if (inMicroMipsMode()) {
    JalrInst.setOpcode(hasMips32r6() ? Mips::JALRC16_MMR6 : Mips::JALR16_MM);
    JalrInst.addOperand(FirstRegOp);
  } else {
    JalrInst.setOpcode(Mips::JALR);
    JalrInst.addOperand(MCOperand::createReg(Mips::RA));
    JalrInst.addOperand(FirstRegOp);
  }
} else if (Opcode == Mips::JalTwoReg) {
  // jal $rd, $rs => jalr $rd, $rs
  if (IsCpRestoreSet && inMicroMipsMode())
    JalrInst.setOpcode(Mips::JALRS_MM);
  else
    JalrInst.setOpcode(inMicroMipsMode() ? Mips::JALR_MM : Mips::JALR);
  JalrInst.addOperand(FirstRegOp);
  const MCOperand SecondRegOp = Inst.getOperand(1);
  JalrInst.addOperand(SecondRegOp);
}
Out.EmitInstruction(JalrInst, *STI);

// If .set reorder is active and branch instruction has a delay slot,
// emit a NOP after it.
const MCInstrDesc &MCID = getInstDesc(JalrInst.getOpcode());
if (MCID.hasDelaySlot() && AssemblerOptions.back()->isReorder())
  TOut.emitEmptyDelaySlot(hasShortDelaySlot(JalrInst.getOpcode()), IDLoc,
                          STI);

return false;
2586}

2588/// Can the value be represented by a unsigned N-bit value and a shift left?
2589template <unsigned N> static bool isShiftedUIntAtAnyPosition(uint64_t x) {
unsigned BitNum = findFirstSet(x);

return (x == x >> BitNum << BitNum) && isUInt<N>(x >> BitNum);
2593}

2595/// Load (or add) an immediate into a register.
2596///
2597/// @param ImmValue     The immediate to load.
2598/// @param DstReg       The register that will hold the immediate.
2599/// @param SrcReg       A register to add to the immediate or Mips::NoRegister
2600///                     for a simple initialization.
2601/// @param Is32BitImm   Is ImmValue 32-bit or 64-bit?
2602/// @param IsAddress    True if the immediate represents an address. False if it
2603///                     is an integer.
2604/// @param IDLoc        Location of the immediate in the source file.
2605bool MipsAsmParser::loadImmediate(int64_t ImmValue, unsigned DstReg,
                                unsigned SrcReg, bool Is32BitImm,
                                bool IsAddress, SMLoc IDLoc, MCStreamer &Out,
                                const MCSubtargetInfo *STI) {
MipsTargetStreamer &TOut = getTargetStreamer();

if (!Is32BitImm && !isGP64bit()) {
  Error(IDLoc, "instruction requires a 64-bit architecture");
  return true;
}

if (Is32BitImm) {
  if (isInt<32>(ImmValue) || isUInt<32>(ImmValue)) {
    // Sign extend up to 64-bit so that the predicates match the hardware
    // behaviour. In particular, isInt<16>(0xffff8000) and similar should be
    // true.
    ImmValue = SignExtend64<32>(ImmValue);
  } else {
    Error(IDLoc, "instruction requires a 32-bit immediate");
    return true;
  }
}

unsigned ZeroReg = IsAddress ? ABI.GetNullPtr() : ABI.GetZeroReg();
unsigned AdduOp = !Is32BitImm ? Mips::DADDu : Mips::ADDu;

bool UseSrcReg = false;
if (SrcReg != Mips::NoRegister)
  UseSrcReg = true;

unsigned TmpReg = DstReg;
if (UseSrcReg &&
    getContext().getRegisterInfo()->isSuperOrSubRegisterEq(DstReg, SrcReg)) {
  // At this point we need AT to perform the expansions and we exit if it is
  // not available.
  unsigned ATReg = getATReg(IDLoc);
  if (!ATReg)
    return true;
  TmpReg = ATReg;
}

if (isInt<16>(ImmValue)) {
  if (!UseSrcReg)
    SrcReg = ZeroReg;

  // This doesn't quite follow the usual ABI expectations for N32 but matches
  // traditional assembler behaviour. N32 would normally use addiu for both
  // integers and addresses.
  if (IsAddress && !Is32BitImm) {
    TOut.emitRRI(Mips::DADDiu, DstReg, SrcReg, ImmValue, IDLoc, STI);
    return false;
  }

  TOut.emitRRI(Mips::ADDiu, DstReg, SrcReg, ImmValue, IDLoc, STI);
  return false;
}

if (isUInt<16>(ImmValue)) {
  unsigned TmpReg = DstReg;
  if (SrcReg == DstReg) {
    TmpReg = getATReg(IDLoc);
    if (!TmpReg)
      return true;
  }

  TOut.emitRRI(Mips::ORi, TmpReg, ZeroReg, ImmValue, IDLoc, STI);
  if (UseSrcReg)
    TOut.emitRRR(ABI.GetPtrAdduOp(), DstReg, TmpReg, SrcReg, IDLoc, STI);
  return false;
}

if (isInt<32>(ImmValue) || isUInt<32>(ImmValue)) {
  warnIfNoMacro(IDLoc);

  uint16_t Bits31To16 = (ImmValue >> 16) & 0xffff;
  uint16_t Bits15To0 = ImmValue & 0xffff;
  if (!Is32BitImm && !isInt<32>(ImmValue)) {
    // Traditional behaviour seems to special case this particular value. It's
    // not clear why other masks are handled differently.
    if (ImmValue == 0xffffffff) {
      TOut.emitRI(Mips::LUi, TmpReg, 0xffff, IDLoc, STI);
      TOut.emitRRI(Mips::DSRL32, TmpReg, TmpReg, 0, IDLoc, STI);
      if (UseSrcReg)
        TOut.emitRRR(AdduOp, DstReg, TmpReg, SrcReg, IDLoc, STI);
      return false;
    }

    // Expand to an ORi instead of a LUi to avoid sign-extending into the
    // upper 32 bits.
    TOut.emitRRI(Mips::ORi, TmpReg, ZeroReg, Bits31To16, IDLoc, STI);
    TOut.emitRRI(Mips::DSLL, TmpReg, TmpReg, 16, IDLoc, STI);
    if (Bits15To0)
      TOut.emitRRI(Mips::ORi, TmpReg, TmpReg, Bits15To0, IDLoc, STI);
    if (UseSrcReg)
      TOut.emitRRR(AdduOp, DstReg, TmpReg, SrcReg, IDLoc, STI);
    return false;
  }

  TOut.emitRI(Mips::LUi, TmpReg, Bits31To16, IDLoc, STI);
  if (Bits15To0)
    TOut.emitRRI(Mips::ORi, TmpReg, TmpReg, Bits15To0, IDLoc, STI);
  if (UseSrcReg)
    TOut.emitRRR(AdduOp, DstReg, TmpReg, SrcReg, IDLoc, STI);
  return false;
}

if (isShiftedUIntAtAnyPosition<16>(ImmValue)) {
  if (Is32BitImm) {
    Error(IDLoc, "instruction requires a 32-bit immediate");
    return true;
  }

  // Traditionally, these immediates are shifted as little as possible and as
  // such we align the most significant bit to bit 15 of our temporary.
  unsigned FirstSet = findFirstSet((uint64_t)ImmValue);
  unsigned LastSet = findLastSet((uint64_t)ImmValue);
  unsigned ShiftAmount = FirstSet - (15 - (LastSet - FirstSet));
  uint16_t Bits = (ImmValue >> ShiftAmount) & 0xffff;
  TOut.emitRRI(Mips::ORi, TmpReg, ZeroReg, Bits, IDLoc, STI);
  TOut.emitRRI(Mips::DSLL, TmpReg, TmpReg, ShiftAmount, IDLoc, STI);

  if (UseSrcReg)
    TOut.emitRRR(AdduOp, DstReg, TmpReg, SrcReg, IDLoc, STI);

  return false;
}

warnIfNoMacro(IDLoc);

// The remaining case is packed with a sequence of dsll and ori with zeros
// being omitted and any neighbouring dsll's being coalesced.
// The highest 32-bit's are equivalent to a 32-bit immediate load.

// Load bits 32-63 of ImmValue into bits 0-31 of the temporary register.
if (loadImmediate(ImmValue >> 32, TmpReg, Mips::NoRegister, true, false,
                  IDLoc, Out, STI))
  return false;

// Shift and accumulate into the register. If a 16-bit chunk is zero, then
// skip it and defer the shift to the next chunk.
unsigned ShiftCarriedForwards = 16;
for (int BitNum = 16; BitNum >= 0; BitNum -= 16) {
  uint16_t ImmChunk = (ImmValue >> BitNum) & 0xffff;

  if (ImmChunk != 0) {
    TOut.emitDSLL(TmpReg, TmpReg, ShiftCarriedForwards, IDLoc, STI);
    TOut.emitRRI(Mips::ORi, TmpReg, TmpReg, ImmChunk, IDLoc, STI);
    ShiftCarriedForwards = 0;
  }

  ShiftCarriedForwards += 16;
}
ShiftCarriedForwards -= 16;

// Finish any remaining shifts left by trailing zeros.
if (ShiftCarriedForwards)
  TOut.emitDSLL(TmpReg, TmpReg, ShiftCarriedForwards, IDLoc, STI);

if (UseSrcReg)
  TOut.emitRRR(AdduOp, DstReg, TmpReg, SrcReg, IDLoc, STI);

return false;
2767}

2769bool MipsAsmParser::expandLoadImm(MCInst &Inst, bool Is32BitImm, SMLoc IDLoc,
                                MCStreamer &Out, const MCSubtargetInfo *STI) {
const MCOperand &ImmOp = Inst.getOperand(1);
assert(ImmOp.isImm() && "expected immediate operand kind")(static_cast <bool> (ImmOp.isImm() && "expected immediate operand kind"
) ? void (0) : __assert_fail ("ImmOp.isImm() && \"expected immediate operand kind\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 2772, __extension__ __PRETTY_FUNCTION__));
const MCOperand &DstRegOp = Inst.getOperand(0);
assert(DstRegOp.isReg() && "expected register operand kind")(static_cast <bool> (DstRegOp.isReg() && "expected register operand kind"
) ? void (0) : __assert_fail ("DstRegOp.isReg() && \"expected register operand kind\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 2774, __extension__ __PRETTY_FUNCTION__));

if (loadImmediate(ImmOp.getImm(), DstRegOp.getReg(), Mips::NoRegister,
                  Is32BitImm, false, IDLoc, Out, STI))
  return true;

return false;
2781}

2783bool MipsAsmParser::expandLoadAddress(unsigned DstReg, unsigned BaseReg,
                                    const MCOperand &Offset,
                                    bool Is32BitAddress, SMLoc IDLoc,
                                    MCStreamer &Out,
                                    const MCSubtargetInfo *STI) {
// la can't produce a usable address when addresses are 64-bit.
if (Is32BitAddress && ABI.ArePtrs64bit()) {
  // FIXME: Demote this to a warning and continue as if we had 'dla' instead.
  //        We currently can't do this because we depend on the equality
  //        operator and N64 can end up with a GPR32/GPR64 mismatch.
  Error(IDLoc, "la used to load 64-bit address");
  // Continue as if we had 'dla' instead.
  Is32BitAddress = false;
  return true;
}

// dla requires 64-bit addresses.
if (!Is32BitAddress && !hasMips3()) {
  Error(IDLoc, "instruction requires a 64-bit architecture");
  return true;
}

if (!Offset.isImm())
  return loadAndAddSymbolAddress(Offset.getExpr(), DstReg, BaseReg,
                                 Is32BitAddress, IDLoc, Out, STI);

if (!ABI.ArePtrs64bit()) {
  // Continue as if we had 'la' whether we had 'la' or 'dla'.
  Is32BitAddress = true;
}

return loadImmediate(Offset.getImm(), DstReg, BaseReg, Is32BitAddress, true,
                     IDLoc, Out, STI);
2816}

2818bool MipsAsmParser::loadAndAddSymbolAddress(const MCExpr *SymExpr,
                                          unsigned DstReg, unsigned SrcReg,
                                          bool Is32BitSym, SMLoc IDLoc,
                                          MCStreamer &Out,
                                          const MCSubtargetInfo *STI) {
// FIXME: These expansions do not respect -mxgot.
MipsTargetStreamer &TOut = getTargetStreamer();
bool UseSrcReg = SrcReg != Mips::NoRegister;
warnIfNoMacro(IDLoc);

if (inPicMode() && ABI.IsO32()) {
  MCValue Res;
  if (!SymExpr->evaluateAsRelocatable(Res, nullptr, nullptr)) {
    Error(IDLoc, "expected relocatable expression");
    return true;
  }
  if (Res.getSymB() != nullptr) {
    Error(IDLoc, "expected relocatable expression with only one symbol");
    return true;
  }

  // The case where the result register is $25 is somewhat special. If the
  // symbol in the final relocation is external and not modified with a
  // constant then we must use R_MIPS_CALL16 instead of R_MIPS_GOT16.
  if ((DstReg == Mips::T9 || DstReg == Mips::T9_64) && !UseSrcReg &&
      Res.getConstant() == 0 &&
      !(Res.getSymA()->getSymbol().isInSection() ||
        Res.getSymA()->getSymbol().isTemporary() ||
        (Res.getSymA()->getSymbol().isELF() &&
         cast<MCSymbolELF>(Res.getSymA()->getSymbol()).getBinding() ==
             ELF::STB_LOCAL))) {
    const MCExpr *CallExpr =
        MipsMCExpr::create(MipsMCExpr::MEK_GOT_CALL, SymExpr, getContext());
    TOut.emitRRX(Mips::LW, DstReg, ABI.GetGlobalPtr(),
                 MCOperand::createExpr(CallExpr), IDLoc, STI);
    return false;
  }

  // The remaining cases are:
  //   External GOT: lw $tmp, %got(symbol+offset)($gp)
  //                >addiu $tmp, $tmp, %lo(offset)
  //                >addiu $rd, $tmp, $rs
  //   Local GOT:    lw $tmp, %got(symbol+offset)($gp)
  //                 addiu $tmp, $tmp, %lo(symbol+offset)($gp)
  //                >addiu $rd, $tmp, $rs
  // The addiu's marked with a '>' may be omitted if they are redundant. If
  // this happens then the last instruction must use $rd as the result
  // register.
  const MipsMCExpr *GotExpr =
      MipsMCExpr::create(MipsMCExpr::MEK_GOT, SymExpr, getContext());
  const MCExpr *LoExpr = nullptr;
  if (Res.getSymA()->getSymbol().isInSection() ||
      Res.getSymA()->getSymbol().isTemporary())
    LoExpr = MipsMCExpr::create(MipsMCExpr::MEK_LO, SymExpr, getContext());
  else if (Res.getConstant() != 0) {
    // External symbols fully resolve the symbol with just the %got(symbol)
    // but we must still account for any offset to the symbol for expressions
    // like symbol+8.
    LoExpr = MCConstantExpr::create(Res.getConstant(), getContext());
  }

  unsigned TmpReg = DstReg;
  if (UseSrcReg &&
      getContext().getRegisterInfo()->isSuperOrSubRegisterEq(DstReg,
                                                             SrcReg)) {
    // If $rs is the same as $rd, we need to use AT.
    // If it is not available we exit.
    unsigned ATReg = getATReg(IDLoc);
    if (!ATReg)
      return true;
    TmpReg = ATReg;
  }

  TOut.emitRRX(Mips::LW, TmpReg, ABI.GetGlobalPtr(),
               MCOperand::createExpr(GotExpr), IDLoc, STI);

  if (LoExpr)
    TOut.emitRRX(Mips::ADDiu, TmpReg, TmpReg, MCOperand::createExpr(LoExpr),
                 IDLoc, STI);

  if (UseSrcReg)
    TOut.emitRRR(Mips::ADDu, DstReg, TmpReg, SrcReg, IDLoc, STI);

  return false;
}

if (inPicMode() && ABI.ArePtrs64bit()) {
  MCValue Res;
  if (!SymExpr->evaluateAsRelocatable(Res, nullptr, nullptr)) {
    Error(IDLoc, "expected relocatable expression");
    return true;
  }
  if (Res.getSymB() != nullptr) {
    Error(IDLoc, "expected relocatable expression with only one symbol");
    return true;
  }

  // The case where the result register is $25 is somewhat special. If the
  // symbol in the final relocation is external and not modified with a
  // constant then we must use R_MIPS_CALL16 instead of R_MIPS_GOT_DISP.
  if ((DstReg == Mips::T9 || DstReg == Mips::T9_64) && !UseSrcReg &&
      Res.getConstant() == 0 &&
      !(Res.getSymA()->getSymbol().isInSection() ||
        Res.getSymA()->getSymbol().isTemporary() ||
        (Res.getSymA()->getSymbol().isELF() &&
         cast<MCSymbolELF>(Res.getSymA()->getSymbol()).getBinding() ==
             ELF::STB_LOCAL))) {
    const MCExpr *CallExpr =
        MipsMCExpr::create(MipsMCExpr::MEK_GOT_CALL, SymExpr, getContext());
    TOut.emitRRX(Mips::LD, DstReg, ABI.GetGlobalPtr(),
                 MCOperand::createExpr(CallExpr), IDLoc, STI);
    return false;
  }

  // The remaining cases are:
  //   Small offset: ld $tmp, %got_disp(symbol)($gp)
  //                >daddiu $tmp, $tmp, offset
  //                >daddu $rd, $tmp, $rs
  // The daddiu's marked with a '>' may be omitted if they are redundant. If
  // this happens then the last instruction must use $rd as the result
  // register.
  const MipsMCExpr *GotExpr = MipsMCExpr::create(MipsMCExpr::MEK_GOT_DISP,
                                                 Res.getSymA(),
                                                 getContext());
  const MCExpr *LoExpr = nullptr;
  if (Res.getConstant() != 0) {
    // Symbols fully resolve with just the %got_disp(symbol) but we
    // must still account for any offset to the symbol for
    // expressions like symbol+8.
    LoExpr = MCConstantExpr::create(Res.getConstant(), getContext());

    // FIXME: Offsets greater than 16 bits are not yet implemented.
    // FIXME: The correct range is a 32-bit sign-extended number.
    if (Res.getConstant() < -0x8000 || Res.getConstant() > 0x7fff) {
      Error(IDLoc, "macro instruction uses large offset, which is not "
                   "currently supported");
      return true;
    }
  }

  unsigned TmpReg = DstReg;
  if (UseSrcReg &&
      getContext().getRegisterInfo()->isSuperOrSubRegisterEq(DstReg,
                                                             SrcReg)) {
    // If $rs is the same as $rd, we need to use AT.
    // If it is not available we exit.
    unsigned ATReg = getATReg(IDLoc);
    if (!ATReg)
      return true;
    TmpReg = ATReg;
  }

  TOut.emitRRX(Mips::LD, TmpReg, ABI.GetGlobalPtr(),
               MCOperand::createExpr(GotExpr), IDLoc, STI);

  if (LoExpr)
    TOut.emitRRX(Mips::DADDiu, TmpReg, TmpReg, MCOperand::createExpr(LoExpr),
                 IDLoc, STI);

  if (UseSrcReg)
    TOut.emitRRR(Mips::DADDu, DstReg, TmpReg, SrcReg, IDLoc, STI);

  return false;
}

const MipsMCExpr *HiExpr =
    MipsMCExpr::create(MipsMCExpr::MEK_HI, SymExpr, getContext());
const MipsMCExpr *LoExpr =
    MipsMCExpr::create(MipsMCExpr::MEK_LO, SymExpr, getContext());

// This is the 64-bit symbol address expansion.
if (ABI.ArePtrs64bit() && isGP64bit()) {
  // We need AT for the 64-bit expansion in the cases where the optional
  // source register is the destination register and for the superscalar
  // scheduled form.
  //
  // If it is not available we exit if the destination is the same as the
  // source register.

  const MipsMCExpr *HighestExpr =
      MipsMCExpr::create(MipsMCExpr::MEK_HIGHEST, SymExpr, getContext());
  const MipsMCExpr *HigherExpr =
      MipsMCExpr::create(MipsMCExpr::MEK_HIGHER, SymExpr, getContext());

  bool RdRegIsRsReg =
      getContext().getRegisterInfo()->isSuperOrSubRegisterEq(DstReg, SrcReg);

  if (canUseATReg() && UseSrcReg && RdRegIsRsReg) {
    unsigned ATReg = getATReg(IDLoc);

    // If $rs is the same as $rd:
    // (d)la $rd, sym($rd) => lui    $at, %highest(sym)
    //                        daddiu $at, $at, %higher(sym)
    //                        dsll   $at, $at, 16
    //                        daddiu $at, $at, %hi(sym)
    //                        dsll   $at, $at, 16
    //                        daddiu $at, $at, %lo(sym)
    //                        daddu  $rd, $at, $rd
    TOut.emitRX(Mips::LUi, ATReg, MCOperand::createExpr(HighestExpr), IDLoc,
                STI);
    TOut.emitRRX(Mips::DADDiu, ATReg, ATReg,
                 MCOperand::createExpr(HigherExpr), IDLoc, STI);
    TOut.emitRRI(Mips::DSLL, ATReg, ATReg, 16, IDLoc, STI);
    TOut.emitRRX(Mips::DADDiu, ATReg, ATReg, MCOperand::createExpr(HiExpr),
                 IDLoc, STI);
    TOut.emitRRI(Mips::DSLL, ATReg, ATReg, 16, IDLoc, STI);
    TOut.emitRRX(Mips::DADDiu, ATReg, ATReg, MCOperand::createExpr(LoExpr),
                 IDLoc, STI);
    TOut.emitRRR(Mips::DADDu, DstReg, ATReg, SrcReg, IDLoc, STI);

    return false;
  } else if (canUseATReg() && !RdRegIsRsReg) {
    unsigned ATReg = getATReg(IDLoc);

    // If the $rs is different from $rd or if $rs isn't specified and we
    // have $at available:
    // (d)la $rd, sym/sym($rs) => lui    $rd, %highest(sym)
    //                            lui    $at, %hi(sym)
    //                            daddiu $rd, $rd, %higher(sym)
    //                            daddiu $at, $at, %lo(sym)
    //                            dsll32 $rd, $rd, 0
    //                            daddu  $rd, $rd, $at
    //                            (daddu  $rd, $rd, $rs)
    //
    // Which is preferred for superscalar issue.
    TOut.emitRX(Mips::LUi, DstReg, MCOperand::createExpr(HighestExpr), IDLoc,
                STI);
    TOut.emitRX(Mips::LUi, ATReg, MCOperand::createExpr(HiExpr), IDLoc, STI);
    TOut.emitRRX(Mips::DADDiu, DstReg, DstReg,
                 MCOperand::createExpr(HigherExpr), IDLoc, STI);
    TOut.emitRRX(Mips::DADDiu, ATReg, ATReg, MCOperand::createExpr(LoExpr),
                 IDLoc, STI);
    TOut.emitRRI(Mips::DSLL32, DstReg, DstReg, 0, IDLoc, STI);
    TOut.emitRRR(Mips::DADDu, DstReg, DstReg, ATReg, IDLoc, STI);
    if (UseSrcReg)
      TOut.emitRRR(Mips::DADDu, DstReg, DstReg, SrcReg, IDLoc, STI);

    return false;
  } else if (!canUseATReg() && !RdRegIsRsReg) {
    // Otherwise, synthesize the address in the destination register
    // serially:
    // (d)la $rd, sym/sym($rs) => lui    $rd, %highest(sym)
    //                            daddiu $rd, $rd, %higher(sym)
    //                            dsll   $rd, $rd, 16
    //                            daddiu $rd, $rd, %hi(sym)
    //                            dsll   $rd, $rd, 16
    //                            daddiu $rd, $rd, %lo(sym)
    TOut.emitRX(Mips::LUi, DstReg, MCOperand::createExpr(HighestExpr), IDLoc,
                STI);
    TOut.emitRRX(Mips::DADDiu, DstReg, DstReg,
                 MCOperand::createExpr(HigherExpr), IDLoc, STI);
    TOut.emitRRI(Mips::DSLL, DstReg, DstReg, 16, IDLoc, STI);
    TOut.emitRRX(Mips::DADDiu, DstReg, DstReg,
                 MCOperand::createExpr(HiExpr), IDLoc, STI);
    TOut.emitRRI(Mips::DSLL, DstReg, DstReg, 16, IDLoc, STI);
    TOut.emitRRX(Mips::DADDiu, DstReg, DstReg,
                 MCOperand::createExpr(LoExpr), IDLoc, STI);
    if (UseSrcReg)
      TOut.emitRRR(Mips::DADDu, DstReg, DstReg, SrcReg, IDLoc, STI);

    return false;
  } else {
    // We have a case where SrcReg == DstReg and we don't have $at
    // available. We can't expand this case, so error out appropriately.
    assert(SrcReg == DstReg && !canUseATReg() &&(static_cast <bool> (SrcReg == DstReg && !canUseATReg
() && "Could have expanded dla but didn't?") ? void (
0) : __assert_fail ("SrcReg == DstReg && !canUseATReg() && \"Could have expanded dla but didn't?\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 3083, __extension__ __PRETTY_FUNCTION__))
           "Could have expanded dla but didn't?")(static_cast <bool> (SrcReg == DstReg && !canUseATReg
() && "Could have expanded dla but didn't?") ? void (
0) : __assert_fail ("SrcReg == DstReg && !canUseATReg() && \"Could have expanded dla but didn't?\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 3083, __extension__ __PRETTY_FUNCTION__));
    reportParseError(IDLoc,
                   "pseudo-instruction requires $at, which is not available");
    return true;
  }
}

// And now, the 32-bit symbol address expansion:
// If $rs is the same as $rd:
// (d)la $rd, sym($rd)     => lui   $at, %hi(sym)
//                            ori   $at, $at, %lo(sym)
//                            addu  $rd, $at, $rd
// Otherwise, if the $rs is different from $rd or if $rs isn't specified:
// (d)la $rd, sym/sym($rs) => lui   $rd, %hi(sym)
//                            ori   $rd, $rd, %lo(sym)
//                            (addu $rd, $rd, $rs)
unsigned TmpReg = DstReg;
if (UseSrcReg &&
    getContext().getRegisterInfo()->isSuperOrSubRegisterEq(DstReg, SrcReg)) {
  // If $rs is the same as $rd, we need to use AT.
  // If it is not available we exit.
  unsigned ATReg = getATReg(IDLoc);
  if (!ATReg)
    return true;
  TmpReg = ATReg;
}

TOut.emitRX(Mips::LUi, TmpReg, MCOperand::createExpr(HiExpr), IDLoc, STI);
TOut.emitRRX(Mips::ADDiu, TmpReg, TmpReg, MCOperand::createExpr(LoExpr),
             IDLoc, STI);

if (UseSrcReg)
  TOut.emitRRR(Mips::ADDu, DstReg, TmpReg, SrcReg, IDLoc, STI);
else
  assert((static_cast <bool> (getContext().getRegisterInfo()->
isSuperOrSubRegisterEq(DstReg, TmpReg)) ? void (0) : __assert_fail
 ("getContext().getRegisterInfo()->isSuperOrSubRegisterEq(DstReg, TmpReg)"
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 3118, __extension__ __PRETTY_FUNCTION__))
      getContext().getRegisterInfo()->isSuperOrSubRegisterEq(DstReg, TmpReg))(static_cast <bool> (getContext().getRegisterInfo()->
isSuperOrSubRegisterEq(DstReg, TmpReg)) ? void (0) : __assert_fail
 ("getContext().getRegisterInfo()->isSuperOrSubRegisterEq(DstReg, TmpReg)"
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 3118, __extension__ __PRETTY_FUNCTION__));

return false;
3121}

3123// Each double-precision register DO-D15 overlaps with two of the single
3124// precision registers F0-F31. As an example, all of the following hold true:
3125// D0 + 1 == F1, F1 + 1 == D1, F1 + 1 == F2, depending on the context.
3126static unsigned nextReg(unsigned Reg) {
if (MipsMCRegisterClasses[Mips::FGR32RegClassID].contains(Reg))
  return Reg == (unsigned)Mips::F31 ? (unsigned)Mips::F0 : Reg + 1;
switch (Reg) {
default: llvm_unreachable("Unknown register in assembly macro expansion!")::llvm::llvm_unreachable_internal("Unknown register in assembly macro expansion!"
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 3130);
case Mips::ZERO: return Mips::AT;
case Mips::AT:   return Mips::V0;
case Mips::V0:   return Mips::V1;
case Mips::V1:   return Mips::A0;
case Mips::A0:   return Mips::A1;
case Mips::A1:   return Mips::A2;
case Mips::A2:   return Mips::A3;
case Mips::A3:   return Mips::T0;
case Mips::T0:   return Mips::T1;
case Mips::T1:   return Mips::T2;
case Mips::T2:   return Mips::T3;
case Mips::T3:   return Mips::T4;
case Mips::T4:   return Mips::T5;
case Mips::T5:   return Mips::T6;
case Mips::T6:   return Mips::T7;
case Mips::T7:   return Mips::S0;
case Mips::S0:   return Mips::S1;
case Mips::S1:   return Mips::S2;
case Mips::S2:   return Mips::S3;
case Mips::S3:   return Mips::S4;
case Mips::S4:   return Mips::S5;
case Mips::S5:   return Mips::S6;
case Mips::S6:   return Mips::S7;
case Mips::S7:   return Mips::T8;
case Mips::T8:   return Mips::T9;
case Mips::T9:   return Mips::K0;
case Mips::K0:   return Mips::K1;
case Mips::K1:   return Mips::GP;
case Mips::GP:   return Mips::SP;
case Mips::SP:   return Mips::FP;
case Mips::FP:   return Mips::RA;
case Mips::RA:   return Mips::ZERO;
case Mips::D0:   return Mips::F1;
case Mips::D1:   return Mips::F3;
case Mips::D2:   return Mips::F5;
case Mips::D3:   return Mips::F7;
case Mips::D4:   return Mips::F9;
case Mips::D5:   return Mips::F11;
case Mips::D6:   return Mips::F13;
case Mips::D7:   return Mips::F15;
case Mips::D8:   return Mips::F17;
case Mips::D9:   return Mips::F19;
case Mips::D10:   return Mips::F21;
case Mips::D11:   return Mips::F23;
case Mips::D12:   return Mips::F25;
case Mips::D13:   return Mips::F27;
case Mips::D14:   return Mips::F29;
case Mips::D15:   return Mips::F31;
}
3180}

3182// FIXME: This method is too general. In principle we should compute the number
3183// of instructions required to synthesize the immediate inline compared to
3184// synthesizing the address inline and relying on non .text sections.
3185// For static O32 and N32 this may yield a small benefit, for static N64 this is
3186// likely to yield a much larger benefit as we have to synthesize a 64bit
3187// address to load a 64 bit value.
3188bool MipsAsmParser::emitPartialAddress(MipsTargetStreamer &TOut, SMLoc IDLoc,
                                     MCSymbol *Sym) {
unsigned ATReg = getATReg(IDLoc);
if (!ATReg)
  return true;

if(IsPicEnabled) {
  const MCExpr *GotSym =
      MCSymbolRefExpr::create(Sym, MCSymbolRefExpr::VK_None, getContext());
  const MipsMCExpr *GotExpr =
      MipsMCExpr::create(MipsMCExpr::MEK_GOT, GotSym, getContext());

  if(isABI_O32() || isABI_N32()) {
    TOut.emitRRX(Mips::LW, ATReg, Mips::GP, MCOperand::createExpr(GotExpr),
                 IDLoc, STI);
  } else { //isABI_N64()
    TOut.emitRRX(Mips::LD, ATReg, Mips::GP, MCOperand::createExpr(GotExpr),
                 IDLoc, STI);
  }
} else { //!IsPicEnabled
  const MCExpr *HiSym =
      MCSymbolRefExpr::create(Sym, MCSymbolRefExpr::VK_None, getContext());
  const MipsMCExpr *HiExpr =
      MipsMCExpr::create(MipsMCExpr::MEK_HI, HiSym, getContext());

  // FIXME: This is technically correct but gives a different result to gas,
  // but gas is incomplete there (it has a fixme noting it doesn't work with
  // 64-bit addresses).
  // FIXME: With -msym32 option, the address expansion for N64 should probably
  // use the O32 / N32 case. It's safe to use the 64 address expansion as the
  // symbol's value is considered sign extended.
  if(isABI_O32() || isABI_N32()) {
    TOut.emitRX(Mips::LUi, ATReg, MCOperand::createExpr(HiExpr), IDLoc, STI);
  } else { //isABI_N64()
    const MCExpr *HighestSym =
        MCSymbolRefExpr::create(Sym, MCSymbolRefExpr::VK_None, getContext());
    const MipsMCExpr *HighestExpr =
        MipsMCExpr::create(MipsMCExpr::MEK_HIGHEST, HighestSym, getContext());
    const MCExpr *HigherSym =
        MCSymbolRefExpr::create(Sym, MCSymbolRefExpr::VK_None, getContext());
    const MipsMCExpr *HigherExpr =
        MipsMCExpr::create(MipsMCExpr::MEK_HIGHER, HigherSym, getContext());

    TOut.emitRX(Mips::LUi, ATReg, MCOperand::createExpr(HighestExpr), IDLoc,
                STI);
    TOut.emitRRX(Mips::DADDiu, ATReg, ATReg,
                 MCOperand::createExpr(HigherExpr), IDLoc, STI);
    TOut.emitRRI(Mips::DSLL, ATReg, ATReg, 16, IDLoc, STI);
    TOut.emitRRX(Mips::DADDiu, ATReg, ATReg, MCOperand::createExpr(HiExpr),
                 IDLoc, STI);
    TOut.emitRRI(Mips::DSLL, ATReg, ATReg, 16, IDLoc, STI);
  }
}
return false;
3242}

3244bool MipsAsmParser::expandLoadImmReal(MCInst &Inst, bool IsSingle, bool IsGPR,
                                    bool Is64FPU, SMLoc IDLoc,
                                    MCStreamer &Out,
                                    const MCSubtargetInfo *STI) {
MipsTargetStreamer &TOut = getTargetStreamer();
assert(Inst.getNumOperands() == 2 && "Invalid operand count")(static_cast <bool> (Inst.getNumOperands() == 2 &&
 "Invalid operand count") ? void (0) : __assert_fail ("Inst.getNumOperands() == 2 && \"Invalid operand count\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 3249, __extension__ __PRETTY_FUNCTION__));
assert(Inst.getOperand(0).isReg() && Inst.getOperand(1).isImm() &&(static_cast <bool> (Inst.getOperand(0).isReg() &&
 Inst.getOperand(1).isImm() && "Invalid instruction operand."
) ? void (0) : __assert_fail ("Inst.getOperand(0).isReg() && Inst.getOperand(1).isImm() && \"Invalid instruction operand.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 3251, __extension__ __PRETTY_FUNCTION__))
       "Invalid instruction operand.")(static_cast <bool> (Inst.getOperand(0).isReg() &&
 Inst.getOperand(1).isImm() && "Invalid instruction operand."
) ? void (0) : __assert_fail ("Inst.getOperand(0).isReg() && Inst.getOperand(1).isImm() && \"Invalid instruction operand.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 3251, __extension__ __PRETTY_FUNCTION__));

unsigned FirstReg = Inst.getOperand(0).getReg();
uint64_t ImmOp64 = Inst.getOperand(1).getImm();

uint32_t HiImmOp64 = (ImmOp64 & 0xffffffff00000000) >> 32;
// If ImmOp64 is AsmToken::Integer type (all bits set to zero in the
// exponent field), convert it to double (e.g. 1 to 1.0)
if ((HiImmOp64 & 0x7ff00000) == 0) {
  APFloat RealVal(APFloat::IEEEdouble(), ImmOp64);
  ImmOp64 = RealVal.bitcastToAPInt().getZExtValue();
}

uint32_t LoImmOp64 = ImmOp64 & 0xffffffff;
HiImmOp64 = (ImmOp64 & 0xffffffff00000000) >> 32;

if (IsSingle) {
  // Conversion of a double in an uint64_t to a float in a uint32_t,
  // retaining the bit pattern of a float.
  uint32_t ImmOp32;
  double doubleImm = BitsToDouble(ImmOp64);
  float tmp_float = static_cast<float>(doubleImm);
  ImmOp32 = FloatToBits(tmp_float);

  if (IsGPR) {
    if (loadImmediate(ImmOp32, FirstReg, Mips::NoRegister, true, true, IDLoc,
                      Out, STI))
      return true;
    return false;
  } else {
    unsigned ATReg = getATReg(IDLoc);
    if (!ATReg)
      return true;
    if (LoImmOp64 == 0) {
      if (loadImmediate(ImmOp32, ATReg, Mips::NoRegister, true, true, IDLoc,
                        Out, STI))
        return true;
      TOut.emitRR(Mips::MTC1, FirstReg, ATReg, IDLoc, STI);
      return false;
    }

    MCSection *CS = getStreamer().getCurrentSectionOnly();
    // FIXME: Enhance this expansion to use the .lit4 & .lit8 sections
    // where appropriate.
    MCSection *ReadOnlySection = getContext().getELFSection(
        ".rodata", ELF::SHT_PROGBITS, ELF::SHF_ALLOC);

    MCSymbol *Sym = getContext().createTempSymbol();
    const MCExpr *LoSym =
        MCSymbolRefExpr::create(Sym, MCSymbolRefExpr::VK_None, getContext());
    const MipsMCExpr *LoExpr =
        MipsMCExpr::create(MipsMCExpr::MEK_LO, LoSym, getContext());

    getStreamer().SwitchSection(ReadOnlySection);
    getStreamer().EmitLabel(Sym, IDLoc);
    getStreamer().EmitIntValue(ImmOp32, 4);
    getStreamer().SwitchSection(CS);

    if(emitPartialAddress(TOut, IDLoc, Sym))
      return true;
    TOut.emitRRX(Mips::LWC1, FirstReg, ATReg,
                 MCOperand::createExpr(LoExpr), IDLoc, STI);
  }
  return false;
}

// if(!IsSingle)
unsigned ATReg = getATReg(IDLoc);
if (!ATReg)
  return true;

if (IsGPR) {
  if (LoImmOp64 == 0) {
    if(isABI_N32() || isABI_N64()) {
      if (loadImmediate(HiImmOp64, FirstReg, Mips::NoRegister, false, true,
                        IDLoc, Out, STI))
        return true;
      return false;
    } else {
      if (loadImmediate(HiImmOp64, FirstReg, Mips::NoRegister, true, true,
                      IDLoc, Out, STI))
        return true;

      if (loadImmediate(0, nextReg(FirstReg), Mips::NoRegister, true, true,
                      IDLoc, Out, STI))
        return true;
      return false;
    }
  }

  MCSection *CS = getStreamer().getCurrentSectionOnly();
  MCSection *ReadOnlySection = getContext().getELFSection(
      ".rodata", ELF::SHT_PROGBITS, ELF::SHF_ALLOC);

  MCSymbol *Sym = getContext().createTempSymbol();
  const MCExpr *LoSym =
      MCSymbolRefExpr::create(Sym, MCSymbolRefExpr::VK_None, getContext());
  const MipsMCExpr *LoExpr =
      MipsMCExpr::create(MipsMCExpr::MEK_LO, LoSym, getContext());

  getStreamer().SwitchSection(ReadOnlySection);
  getStreamer().EmitLabel(Sym, IDLoc);
  getStreamer().EmitIntValue(HiImmOp64, 4);
  getStreamer().EmitIntValue(LoImmOp64, 4);
  getStreamer().SwitchSection(CS);

  if(emitPartialAddress(TOut, IDLoc, Sym))
    return true;
  if(isABI_N64())
    TOut.emitRRX(Mips::DADDiu, ATReg, ATReg,
                 MCOperand::createExpr(LoExpr), IDLoc, STI);
  else
    TOut.emitRRX(Mips::ADDiu, ATReg, ATReg,
                 MCOperand::createExpr(LoExpr), IDLoc, STI);

  if(isABI_N32() || isABI_N64())
    TOut.emitRRI(Mips::LD, FirstReg, ATReg, 0, IDLoc, STI);
  else {
    TOut.emitRRI(Mips::LW, FirstReg, ATReg, 0, IDLoc, STI);
    TOut.emitRRI(Mips::LW, nextReg(FirstReg), ATReg, 4, IDLoc, STI);
  }
  return false;
} else { // if(!IsGPR && !IsSingle)
  if ((LoImmOp64 == 0) &&
      !((HiImmOp64 & 0xffff0000) && (HiImmOp64 & 0x0000ffff))) {
    // FIXME: In the case where the constant is zero, we can load the
    // register directly from the zero register.
    if (loadImmediate(HiImmOp64, ATReg, Mips::NoRegister, true, true, IDLoc,
                      Out, STI))
      return true;
    if (isABI_N32() || isABI_N64())
      TOut.emitRR(Mips::DMTC1, FirstReg, ATReg, IDLoc, STI);
    else if (hasMips32r2()) {
      TOut.emitRR(Mips::MTC1, FirstReg, Mips::ZERO, IDLoc, STI);
      TOut.emitRRR(Mips::MTHC1_D32, FirstReg, FirstReg, ATReg, IDLoc, STI);
    } else {
      TOut.emitRR(Mips::MTC1, nextReg(FirstReg), ATReg, IDLoc, STI);
      TOut.emitRR(Mips::MTC1, FirstReg, Mips::ZERO, IDLoc, STI);
    }
    return false;
  }

  MCSection *CS = getStreamer().getCurrentSectionOnly();
  // FIXME: Enhance this expansion to use the .lit4 & .lit8 sections
  // where appropriate.
  MCSection *ReadOnlySection = getContext().getELFSection(
      ".rodata", ELF::SHT_PROGBITS, ELF::SHF_ALLOC);

  MCSymbol *Sym = getContext().createTempSymbol();
  const MCExpr *LoSym =
      MCSymbolRefExpr::create(Sym, MCSymbolRefExpr::VK_None, getContext());
  const MipsMCExpr *LoExpr =
      MipsMCExpr::create(MipsMCExpr::MEK_LO, LoSym, getContext());

  getStreamer().SwitchSection(ReadOnlySection);
  getStreamer().EmitLabel(Sym, IDLoc);
  getStreamer().EmitIntValue(HiImmOp64, 4);
  getStreamer().EmitIntValue(LoImmOp64, 4);
  getStreamer().SwitchSection(CS);

  if(emitPartialAddress(TOut, IDLoc, Sym))
    return true;
  TOut.emitRRX(Is64FPU ? Mips::LDC164 : Mips::LDC1, FirstReg, ATReg,
               MCOperand::createExpr(LoExpr), IDLoc, STI);
}
return false;
3417}

3419bool MipsAsmParser::expandUncondBranchMMPseudo(MCInst &Inst, SMLoc IDLoc,
                                             MCStreamer &Out,
                                             const MCSubtargetInfo *STI) {
MipsTargetStreamer &TOut = getTargetStreamer();

assert(getInstDesc(Inst.getOpcode()).getNumOperands() == 1 &&(static_cast <bool> (getInstDesc(Inst.getOpcode()).getNumOperands
() == 1 && "unexpected number of operands") ? void (0
) : __assert_fail ("getInstDesc(Inst.getOpcode()).getNumOperands() == 1 && \"unexpected number of operands\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 3425, __extension__ __PRETTY_FUNCTION__))
       "unexpected number of operands")(static_cast <bool> (getInstDesc(Inst.getOpcode()).getNumOperands
() == 1 && "unexpected number of operands") ? void (0
) : __assert_fail ("getInstDesc(Inst.getOpcode()).getNumOperands() == 1 && \"unexpected number of operands\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 3425, __extension__ __PRETTY_FUNCTION__));

MCOperand Offset = Inst.getOperand(0);
if (Offset.isExpr()) {
  Inst.clear();
  Inst.setOpcode(Mips::BEQ_MM);
  Inst.addOperand(MCOperand::createReg(Mips::ZERO));
  Inst.addOperand(MCOperand::createReg(Mips::ZERO));
  Inst.addOperand(MCOperand::createExpr(Offset.getExpr()));
} else {
  assert(Offset.isImm() && "expected immediate operand kind")(static_cast <bool> (Offset.isImm() && "expected immediate operand kind"
) ? void (0) : __assert_fail ("Offset.isImm() && \"expected immediate operand kind\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 3435, __extension__ __PRETTY_FUNCTION__));
  if (isInt<11>(Offset.getImm())) {
    // If offset fits into 11 bits then this instruction becomes microMIPS
    // 16-bit unconditional branch instruction.
    if (inMicroMipsMode())
      Inst.setOpcode(hasMips32r6() ? Mips::BC16_MMR6 : Mips::B16_MM);
  } else {
    if (!isInt<17>(Offset.getImm()))
      return Error(IDLoc, "branch target out of range");
    if (OffsetToAlignment(Offset.getImm(), 1LL << 1))
      return Error(IDLoc, "branch to misaligned address");
    Inst.clear();
    Inst.setOpcode(Mips::BEQ_MM);
    Inst.addOperand(MCOperand::createReg(Mips::ZERO));
    Inst.addOperand(MCOperand::createReg(Mips::ZERO));
    Inst.addOperand(MCOperand::createImm(Offset.getImm()));
  }
}
Out.EmitInstruction(Inst, *STI);

// If .set reorder is active and branch instruction has a delay slot,
// emit a NOP after it.
const MCInstrDesc &MCID = getInstDesc(Inst.getOpcode());
if (MCID.hasDelaySlot() && AssemblerOptions.back()->isReorder())
  TOut.emitEmptyDelaySlot(true, IDLoc, STI);

return false;
3462}

3464bool MipsAsmParser::expandBranchImm(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
                                  const MCSubtargetInfo *STI) {
MipsTargetStreamer &TOut = getTargetStreamer();
const MCOperand &DstRegOp = Inst.getOperand(0);
assert(DstRegOp.isReg() && "expected register operand kind")(static_cast <bool> (DstRegOp.isReg() && "expected register operand kind"
) ? void (0) : __assert_fail ("DstRegOp.isReg() && \"expected register operand kind\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 3468, __extension__ __PRETTY_FUNCTION__));

const MCOperand &ImmOp = Inst.getOperand(1);
assert(ImmOp.isImm() && "expected immediate operand kind")(static_cast <bool> (ImmOp.isImm() && "expected immediate operand kind"
) ? void (0) : __assert_fail ("ImmOp.isImm() && \"expected immediate operand kind\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 3471, __extension__ __PRETTY_FUNCTION__));

const MCOperand &MemOffsetOp = Inst.getOperand(2);
assert((MemOffsetOp.isImm() || MemOffsetOp.isExpr()) &&(static_cast <bool> ((MemOffsetOp.isImm() || MemOffsetOp
.isExpr()) && "expected immediate or expression operand"
) ? void (0) : __assert_fail ("(MemOffsetOp.isImm() || MemOffsetOp.isExpr()) && \"expected immediate or expression operand\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 3475, __extension__ __PRETTY_FUNCTION__))
       "expected immediate or expression operand")(static_cast <bool> ((MemOffsetOp.isImm() || MemOffsetOp
.isExpr()) && "expected immediate or expression operand"
) ? void (0) : __assert_fail ("(MemOffsetOp.isImm() || MemOffsetOp.isExpr()) && \"expected immediate or expression operand\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 3475, __extension__ __PRETTY_FUNCTION__));

bool IsLikely = false;

unsigned OpCode = 0;
switch(Inst.getOpcode()) {
  case Mips::BneImm:
    OpCode = Mips::BNE;
    break;
  case Mips::BeqImm:
    OpCode = Mips::BEQ;
    break;
  case Mips::BEQLImmMacro:
    OpCode = Mips::BEQL;
    IsLikely = true;
    break;
  case Mips::BNELImmMacro:
    OpCode = Mips::BNEL;
    IsLikely = true;
    break;
  default:
    llvm_unreachable("Unknown immediate branch pseudo-instruction.")::llvm::llvm_unreachable_internal("Unknown immediate branch pseudo-instruction."
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 3496);
    break;
}

int64_t ImmValue = ImmOp.getImm();
if (ImmValue == 0) {
  if (IsLikely) {
    TOut.emitRRX(OpCode, DstRegOp.getReg(), Mips::ZERO,
                 MCOperand::createExpr(MemOffsetOp.getExpr()), IDLoc, STI);
    TOut.emitRRI(Mips::SLL, Mips::ZERO, Mips::ZERO, 0, IDLoc, STI);
  } else
    TOut.emitRRX(OpCode, DstRegOp.getReg(), Mips::ZERO, MemOffsetOp, IDLoc,
            STI);
} else {
  warnIfNoMacro(IDLoc);

  unsigned ATReg = getATReg(IDLoc);
  if (!ATReg)
    return true;

  if (loadImmediate(ImmValue, ATReg, Mips::NoRegister, !isGP64bit(), true,
                    IDLoc, Out, STI))
    return true;

  if (IsLikely) {
    TOut.emitRRX(OpCode, DstRegOp.getReg(), ATReg,
            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;
3528}

3530void MipsAsmParser::expandMemInst(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
                                const MCSubtargetInfo *STI, bool IsLoad,
                                bool IsImmOpnd) {
if (IsLoad) {
  expandLoadInst(Inst, IDLoc, Out, STI, IsImmOpnd);
  return;
}
expandStoreInst(Inst, IDLoc, Out, STI, IsImmOpnd);
3538}

3540void MipsAsmParser::expandLoadInst(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
                                 const MCSubtargetInfo *STI, bool IsImmOpnd) {
MipsTargetStreamer &TOut = getTargetStreamer();

unsigned DstReg = Inst.getOperand(0).getReg();
unsigned BaseReg = Inst.getOperand(1).getReg();

const MCInstrDesc &Desc = getInstDesc(Inst.getOpcode());
int16_t DstRegClass = Desc.OpInfo[0].RegClass;
unsigned DstRegClassID =
    getContext().getRegisterInfo()->getRegClass(DstRegClass).getID();
bool IsGPR = (DstRegClassID == Mips::GPR32RegClassID) ||
             (DstRegClassID == Mips::GPR64RegClassID);

if (IsImmOpnd) {
  // Try to use DstReg as the temporary.
  if (IsGPR && (BaseReg != DstReg)) {
    TOut.emitLoadWithImmOffset(Inst.getOpcode(), DstReg, BaseReg,
                               Inst.getOperand(2).getImm(), DstReg, IDLoc,
                               STI);
    return;
  }

  // At this point we need AT to perform the expansions and we exit if it is
  // not available.
  unsigned ATReg = getATReg(IDLoc);
  if (!ATReg)
    return;

  TOut.emitLoadWithImmOffset(Inst.getOpcode(), DstReg, BaseReg,
                             Inst.getOperand(2).getImm(), ATReg, IDLoc, STI);
  return;
}

const MCExpr *ExprOffset = Inst.getOperand(2).getExpr();
MCOperand LoOperand = MCOperand::createExpr(
    MipsMCExpr::create(MipsMCExpr::MEK_LO, ExprOffset, getContext()));
MCOperand HiOperand = MCOperand::createExpr(
    MipsMCExpr::create(MipsMCExpr::MEK_HI, ExprOffset, getContext()));

// Try to use DstReg as the temporary.
if (IsGPR && (BaseReg != DstReg)) {
  TOut.emitLoadWithSymOffset(Inst.getOpcode(), DstReg, BaseReg, HiOperand,
                             LoOperand, DstReg, IDLoc, STI);
  return;
}

// At this point we need AT to perform the expansions and we exit if it is
// not available.
unsigned ATReg = getATReg(IDLoc);
if (!ATReg)
  return;

TOut.emitLoadWithSymOffset(Inst.getOpcode(), DstReg, BaseReg, HiOperand,
                           LoOperand, ATReg, IDLoc, STI);
3595}

3597void MipsAsmParser::expandStoreInst(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
                                  const MCSubtargetInfo *STI,
                                  bool IsImmOpnd) {
MipsTargetStreamer &TOut = getTargetStreamer();

unsigned SrcReg = Inst.getOperand(0).getReg();
unsigned BaseReg = Inst.getOperand(1).getReg();

if (IsImmOpnd) {
  TOut.emitStoreWithImmOffset(Inst.getOpcode(), SrcReg, BaseReg,
                              Inst.getOperand(2).getImm(),
                              [&]() { return getATReg(IDLoc); }, IDLoc, STI);
  return;
}

unsigned ATReg = getATReg(IDLoc);
if (!ATReg)
  return;

const MCExpr *ExprOffset = Inst.getOperand(2).getExpr();
MCOperand LoOperand = MCOperand::createExpr(
    MipsMCExpr::create(MipsMCExpr::MEK_LO, ExprOffset, getContext()));
MCOperand HiOperand = MCOperand::createExpr(
    MipsMCExpr::create(MipsMCExpr::MEK_HI, ExprOffset, getContext()));
TOut.emitStoreWithSymOffset(Inst.getOpcode(), SrcReg, BaseReg, HiOperand,
                            LoOperand, ATReg, IDLoc, STI);
3623}

3625bool MipsAsmParser::expandLoadStoreMultiple(MCInst &Inst, SMLoc IDLoc,
                                          MCStreamer &Out,
                                          const MCSubtargetInfo *STI) {
unsigned OpNum = Inst.getNumOperands();
unsigned Opcode = Inst.getOpcode();
unsigned NewOpcode = Opcode == Mips::SWM_MM ? Mips::SWM32_MM : Mips::LWM32_MM;

assert(Inst.getOperand(OpNum - 1).isImm() &&(static_cast <bool> (Inst.getOperand(OpNum - 1).isImm()
 && Inst.getOperand(OpNum - 2).isReg() && Inst
.getOperand(OpNum - 3).isReg() && "Invalid instruction operand."
) ? void (0) : __assert_fail ("Inst.getOperand(OpNum - 1).isImm() && Inst.getOperand(OpNum - 2).isReg() && Inst.getOperand(OpNum - 3).isReg() && \"Invalid instruction operand.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 3634, __extension__ __PRETTY_FUNCTION__))
       Inst.getOperand(OpNum - 2).isReg() &&(static_cast <bool> (Inst.getOperand(OpNum - 1).isImm()
 && Inst.getOperand(OpNum - 2).isReg() && Inst
.getOperand(OpNum - 3).isReg() && "Invalid instruction operand."
) ? void (0) : __assert_fail ("Inst.getOperand(OpNum - 1).isImm() && Inst.getOperand(OpNum - 2).isReg() && Inst.getOperand(OpNum - 3).isReg() && \"Invalid instruction operand.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 3634, __extension__ __PRETTY_FUNCTION__))
       Inst.getOperand(OpNum - 3).isReg() && "Invalid instruction operand.")(static_cast <bool> (Inst.getOperand(OpNum - 1).isImm()
 && Inst.getOperand(OpNum - 2).isReg() && Inst
.getOperand(OpNum - 3).isReg() && "Invalid instruction operand."
) ? void (0) : __assert_fail ("Inst.getOperand(OpNum - 1).isImm() && Inst.getOperand(OpNum - 2).isReg() && Inst.getOperand(OpNum - 3).isReg() && \"Invalid instruction operand.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 3634, __extension__ __PRETTY_FUNCTION__));

if (OpNum < 8 && Inst.getOperand(OpNum - 1).getImm() <= 60 &&
    Inst.getOperand(OpNum - 1).getImm() >= 0 &&
    (Inst.getOperand(OpNum - 2).getReg() == Mips::SP ||
     Inst.getOperand(OpNum - 2).getReg() == Mips::SP_64) &&
    (Inst.getOperand(OpNum - 3).getReg() == Mips::RA ||
     Inst.getOperand(OpNum - 3).getReg() == Mips::RA_64)) {
  // It can be implemented as SWM16 or LWM16 instruction.
  if (inMicroMipsMode() && hasMips32r6())
    NewOpcode = Opcode == Mips::SWM_MM ? Mips::SWM16_MMR6 : Mips::LWM16_MMR6;
  else
    NewOpcode = Opcode == Mips::SWM_MM ? Mips::SWM16_MM : Mips::LWM16_MM;
}

Inst.setOpcode(NewOpcode);
Out.EmitInstruction(Inst, *STI);
return false;
3652}

3654bool MipsAsmParser::expandCondBranches(MCInst &Inst, SMLoc IDLoc,
                                     MCStreamer &Out,
                                     const MCSubtargetInfo *STI) {
MipsTargetStreamer &TOut = getTargetStreamer();
bool EmittedNoMacroWarning = false;
unsigned PseudoOpcode = Inst.getOpcode();
unsigned SrcReg = Inst.getOperand(0).getReg();
const MCOperand &TrgOp = Inst.getOperand(1);
const MCExpr *OffsetExpr = Inst.getOperand(2).getExpr();

unsigned ZeroSrcOpcode, ZeroTrgOpcode;
bool ReverseOrderSLT, IsUnsigned, IsLikely, AcceptsEquality;

unsigned TrgReg;
1
'TrgReg' declared without an initial value→
if (TrgOp.isReg())
2
←
Taking false branch→
  TrgReg = TrgOp.getReg();
else if (TrgOp.isImm()) {
3
←
Taking false branch→
  warnIfNoMacro(IDLoc);
  EmittedNoMacroWarning = true;

  TrgReg = getATReg(IDLoc);
  if (!TrgReg)
    return true;

  switch(PseudoOpcode) {
  default:
    llvm_unreachable("unknown opcode for branch pseudo-instruction")::llvm::llvm_unreachable_internal("unknown opcode for branch pseudo-instruction"
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 3680);
  case Mips::BLTImmMacro:
    PseudoOpcode = Mips::BLT;
    break;
  case Mips::BLEImmMacro:
    PseudoOpcode = Mips::BLE;
    break;
  case Mips::BGEImmMacro:
    PseudoOpcode = Mips::BGE;
    break;
  case Mips::BGTImmMacro:
    PseudoOpcode = Mips::BGT;
    break;
  case Mips::BLTUImmMacro:
    PseudoOpcode = Mips::BLTU;
    break;
  case Mips::BLEUImmMacro:
    PseudoOpcode = Mips::BLEU;
    break;
  case Mips::BGEUImmMacro:
    PseudoOpcode = Mips::BGEU;
    break;
  case Mips::BGTUImmMacro:
    PseudoOpcode = Mips::BGTU;
    break;
  case Mips::BLTLImmMacro:
    PseudoOpcode = Mips::BLTL;
    break;
  case Mips::BLELImmMacro:
    PseudoOpcode = Mips::BLEL;
    break;
  case Mips::BGELImmMacro:
    PseudoOpcode = Mips::BGEL;
    break;
  case Mips::BGTLImmMacro:
    PseudoOpcode = Mips::BGTL;
    break;
  case Mips::BLTULImmMacro:
    PseudoOpcode = Mips::BLTUL;
    break;
  case Mips::BLEULImmMacro:
    PseudoOpcode = Mips::BLEUL;
    break;
  case Mips::BGEULImmMacro:
    PseudoOpcode = Mips::BGEUL;
    break;
  case Mips::BGTULImmMacro:
    PseudoOpcode = Mips::BGTUL;
    break;
  }

  if (loadImmediate(TrgOp.getImm(), TrgReg, Mips::NoRegister, !isGP64bit(),
                    false, IDLoc, Out, STI))
    return true;
}

switch (PseudoOpcode) {
4
←
Control jumps to 'case BGTL:'  at line 3772→
case Mips::BLT:
case Mips::BLTU:
case Mips::BLTL:
case Mips::BLTUL:
  AcceptsEquality = false;
  ReverseOrderSLT = false;
  IsUnsigned = ((PseudoOpcode == Mips::BLTU) || (PseudoOpcode == Mips::BLTUL));
  IsLikely = ((PseudoOpcode == Mips::BLTL) || (PseudoOpcode == Mips::BLTUL));
  ZeroSrcOpcode = Mips::BGTZ;
  ZeroTrgOpcode = Mips::BLTZ;
  break;
case Mips::BLE:
case Mips::BLEU:
case Mips::BLEL:
case Mips::BLEUL:
  AcceptsEquality = true;
  ReverseOrderSLT = true;
  IsUnsigned = ((PseudoOpcode == Mips::BLEU) || (PseudoOpcode == Mips::BLEUL));
  IsLikely = ((PseudoOpcode == Mips::BLEL) || (PseudoOpcode == Mips::BLEUL));
  ZeroSrcOpcode = Mips::BGEZ;
  ZeroTrgOpcode = Mips::BLEZ;
  break;
case Mips::BGE:
case Mips::BGEU:
case Mips::BGEL:
case Mips::BGEUL:
  AcceptsEquality = true;
  ReverseOrderSLT = false;
  IsUnsigned = ((PseudoOpcode == Mips::BGEU) || (PseudoOpcode == Mips::BGEUL));
  IsLikely = ((PseudoOpcode == Mips::BGEL) || (PseudoOpcode == Mips::BGEUL));
  ZeroSrcOpcode = Mips::BLEZ;
  ZeroTrgOpcode = Mips::BGEZ;
  break;
case Mips::BGT:
case Mips::BGTU:
case Mips::BGTL:
case Mips::BGTUL:
  AcceptsEquality = false;
  ReverseOrderSLT = true;
  IsUnsigned = ((PseudoOpcode == Mips::BGTU) || (PseudoOpcode == Mips::BGTUL));
  IsLikely = ((PseudoOpcode == Mips::BGTL) || (PseudoOpcode == Mips::BGTUL));
  ZeroSrcOpcode = Mips::BLTZ;
  ZeroTrgOpcode = Mips::BGTZ;
  break;
5
←
 Execution continues on line 3785→
default:
  llvm_unreachable("unknown opcode for branch pseudo-instruction")::llvm::llvm_unreachable_internal("unknown opcode for branch pseudo-instruction"
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 3782);
}

bool IsTrgRegZero = (TrgReg == Mips::ZERO);
6
←
The left operand of '==' is a garbage value
bool IsSrcRegZero = (SrcReg == Mips::ZERO);
if (IsSrcRegZero && IsTrgRegZero) {
  // FIXME: All of these Opcode-specific if's are needed for compatibility
  // with GAS' behaviour. However, they may not generate the most efficient
  // code in some circumstances.
  if (PseudoOpcode == Mips::BLT) {
    TOut.emitRX(Mips::BLTZ, Mips::ZERO, MCOperand::createExpr(OffsetExpr),
                IDLoc, STI);
    return false;
  }
  if (PseudoOpcode == Mips::BLE) {
    TOut.emitRX(Mips::BLEZ, Mips::ZERO, MCOperand::createExpr(OffsetExpr),
                IDLoc, STI);
    Warning(IDLoc, "branch is always taken");
    return false;
  }
  if (PseudoOpcode == Mips::BGE) {
    TOut.emitRX(Mips::BGEZ, Mips::ZERO, MCOperand::createExpr(OffsetExpr),
                IDLoc, STI);
    Warning(IDLoc, "branch is always taken");
    return false;
  }
  if (PseudoOpcode == Mips::BGT) {
    TOut.emitRX(Mips::BGTZ, Mips::ZERO, MCOperand::createExpr(OffsetExpr),
                IDLoc, STI);
    return false;
  }
  if (PseudoOpcode == Mips::BGTU) {
    TOut.emitRRX(Mips::BNE, Mips::ZERO, Mips::ZERO,
                 MCOperand::createExpr(OffsetExpr), IDLoc, STI);
    return false;
  }
  if (AcceptsEquality) {
    // If both registers are $0 and the pseudo-branch accepts equality, it
    // will always be taken, so we emit an unconditional branch.
    TOut.emitRRX(Mips::BEQ, Mips::ZERO, Mips::ZERO,
                 MCOperand::createExpr(OffsetExpr), IDLoc, STI);
    Warning(IDLoc, "branch is always taken");
    return false;
  }
  // If both registers are $0 and the pseudo-branch does not accept
  // equality, it will never be taken, so we don't have to emit anything.
  return false;
}
if (IsSrcRegZero || IsTrgRegZero) {
  if ((IsSrcRegZero && PseudoOpcode == Mips::BGTU) ||
      (IsTrgRegZero && PseudoOpcode == Mips::BLTU)) {
    // If the $rs is $0 and the pseudo-branch is BGTU (0 > x) or
    // if the $rt is $0 and the pseudo-branch is BLTU (x < 0),
    // the pseudo-branch will never be taken, so we don't emit anything.
    // This only applies to unsigned pseudo-branches.
    return false;
  }
  if ((IsSrcRegZero && PseudoOpcode == Mips::BLEU) ||
      (IsTrgRegZero && PseudoOpcode == Mips::BGEU)) {
    // If the $rs is $0 and the pseudo-branch is BLEU (0 <= x) or
    // if the $rt is $0 and the pseudo-branch is BGEU (x >= 0),
    // the pseudo-branch will always be taken, so we emit an unconditional
    // branch.
    // This only applies to unsigned pseudo-branches.
    TOut.emitRRX(Mips::BEQ, Mips::ZERO, Mips::ZERO,
                 MCOperand::createExpr(OffsetExpr), IDLoc, STI);
    Warning(IDLoc, "branch is always taken");
    return false;
  }
  if (IsUnsigned) {
    // If the $rs is $0 and the pseudo-branch is BLTU (0 < x) or
    // if the $rt is $0 and the pseudo-branch is BGTU (x > 0),
    // the pseudo-branch will be taken only when the non-zero register is
    // different from 0, so we emit a BNEZ.
    //
    // If the $rs is $0 and the pseudo-branch is BGEU (0 >= x) or
    // if the $rt is $0 and the pseudo-branch is BLEU (x <= 0),
    // the pseudo-branch will be taken only when the non-zero register is
    // equal to 0, so we emit a BEQZ.
    //
    // Because only BLEU and BGEU branch on equality, we can use the
    // AcceptsEquality variable to decide when to emit the BEQZ.
    TOut.emitRRX(AcceptsEquality ? Mips::BEQ : Mips::BNE,
                 IsSrcRegZero ? TrgReg : SrcReg, Mips::ZERO,
                 MCOperand::createExpr(OffsetExpr), IDLoc, STI);
    return false;
  }
  // If we have a signed pseudo-branch and one of the registers is $0,
  // we can use an appropriate compare-to-zero branch. We select which one
  // to use in the switch statement above.
  TOut.emitRX(IsSrcRegZero ? ZeroSrcOpcode : ZeroTrgOpcode,
              IsSrcRegZero ? TrgReg : SrcReg,
              MCOperand::createExpr(OffsetExpr), IDLoc, STI);
  return false;
}

// If neither the SrcReg nor the TrgReg are $0, we need AT to perform the
// expansions. If it is not available, we return.
unsigned ATRegNum = getATReg(IDLoc);
if (!ATRegNum)
  return true;

if (!EmittedNoMacroWarning)
  warnIfNoMacro(IDLoc);

// SLT fits well with 2 of our 4 pseudo-branches:
//   BLT, where $rs < $rt, translates into "slt $at, $rs, $rt" and
//   BGT, where $rs > $rt, translates into "slt $at, $rt, $rs".
// If the result of the SLT is 1, we branch, and if it's 0, we don't.
// This is accomplished by using a BNEZ with the result of the SLT.
//
// The other 2 pseudo-branches are opposites of the above 2 (BGE with BLT
// and BLE with BGT), so we change the BNEZ into a BEQZ.
// Because only BGE and BLE branch on equality, we can use the
// AcceptsEquality variable to decide when to emit the BEQZ.
// Note that the order of the SLT arguments doesn't change between
// opposites.
//
// The same applies to the unsigned variants, except that SLTu is used
// instead of SLT.
TOut.emitRRR(IsUnsigned ? Mips::SLTu : Mips::SLT, ATRegNum,
             ReverseOrderSLT ? TrgReg : SrcReg,
             ReverseOrderSLT ? SrcReg : TrgReg, IDLoc, STI);

TOut.emitRRX(IsLikely ? (AcceptsEquality ? Mips::BEQL : Mips::BNEL)
                      : (AcceptsEquality ? Mips::BEQ : Mips::BNE),
             ATRegNum, Mips::ZERO, MCOperand::createExpr(OffsetExpr), IDLoc,
             STI);
return false;
3911}

3913// Expand a integer division macro.
3914//
3915// Notably we don't have to emit a warning when encountering $rt as the $zero
3916// register, or 0 as an immediate. processInstruction() has already done that.
3917//
3918// The destination register can only be $zero when expanding (S)DivIMacro or
3919// D(S)DivMacro.

3921bool MipsAsmParser::expandDiv(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
                            const MCSubtargetInfo *STI, const bool IsMips64,
                            const bool Signed) {
MipsTargetStreamer &TOut = getTargetStreamer();

warnIfNoMacro(IDLoc);

const MCOperand &RdRegOp = Inst.getOperand(0);
assert(RdRegOp.isReg() && "expected register operand kind")(static_cast <bool> (RdRegOp.isReg() && "expected register operand kind"
) ? void (0) : __assert_fail ("RdRegOp.isReg() && \"expected register operand kind\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 3929, __extension__ __PRETTY_FUNCTION__));
unsigned RdReg = RdRegOp.getReg();

const MCOperand &RsRegOp = Inst.getOperand(1);
assert(RsRegOp.isReg() && "expected register operand kind")(static_cast <bool> (RsRegOp.isReg() && "expected register operand kind"
) ? void (0) : __assert_fail ("RsRegOp.isReg() && \"expected register operand kind\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 3933, __extension__ __PRETTY_FUNCTION__));
unsigned RsReg = RsRegOp.getReg();

unsigned RtReg;
int64_t ImmValue;

const MCOperand &RtOp = Inst.getOperand(2);
assert((RtOp.isReg() || RtOp.isImm()) &&(static_cast <bool> ((RtOp.isReg() || RtOp.isImm()) &&
 "expected register or immediate operand kind") ? void (0) : __assert_fail
 ("(RtOp.isReg() || RtOp.isImm()) && \"expected register or immediate operand kind\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 3941, __extension__ __PRETTY_FUNCTION__))
       "expected register or immediate operand kind")(static_cast <bool> ((RtOp.isReg() || RtOp.isImm()) &&
 "expected register or immediate operand kind") ? void (0) : __assert_fail
 ("(RtOp.isReg() || RtOp.isImm()) && \"expected register or immediate operand kind\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 3941, __extension__ __PRETTY_FUNCTION__));
if (RtOp.isReg())
  RtReg = RtOp.getReg();
else
  ImmValue = RtOp.getImm();

unsigned DivOp;
unsigned ZeroReg;
unsigned SubOp;

if (IsMips64) {
  DivOp = Signed ? Mips::DSDIV : Mips::DUDIV;
  ZeroReg = Mips::ZERO_64;
  SubOp = Mips::DSUB;
} else {
  DivOp = Signed ? Mips::SDIV : Mips::UDIV;
  ZeroReg = Mips::ZERO;
  SubOp = Mips::SUB;
}

bool UseTraps = useTraps();

if (RtOp.isImm()) {
  unsigned ATReg = getATReg(IDLoc);
  if (!ATReg)
    return true;

  if (ImmValue == 0) {
    if (UseTraps)
      TOut.emitRRI(Mips::TEQ, ZeroReg, ZeroReg, 0x7, IDLoc, STI);
    else
      TOut.emitII(Mips::BREAK, 0x7, 0, IDLoc, STI);
    return false;
  }

  if (ImmValue == 1) {
    TOut.emitRRR(Mips::OR, RdReg, RsReg, Mips::ZERO, IDLoc, STI);
    return false;
  } else if (Signed && ImmValue == -1) {
    TOut.emitRRR(SubOp, RdReg, ZeroReg, RsReg, IDLoc, STI);
    return false;
  } else {
    if (loadImmediate(ImmValue, ATReg, Mips::NoRegister, isInt<32>(ImmValue),
                      false, Inst.getLoc(), Out, STI))
      return true;
    TOut.emitRR(DivOp, RsReg, ATReg, IDLoc, STI);
    TOut.emitR(Mips::MFLO, RdReg, IDLoc, STI);
    return false;
  }
  return true;
}

// If the macro expansion of (d)div(u) would always trap or break, insert
// the trap/break and exit. This gives a different result to GAS. GAS has
// an inconsistency/missed optimization in that not all cases are handled
// equivalently. As the observed behaviour is the same, we're ok.
if (RtReg == Mips::ZERO || RtReg == Mips::ZERO_64) {
  if (UseTraps) {
    TOut.emitRRI(Mips::TEQ, ZeroReg, ZeroReg, 0x7, IDLoc, STI);
    return false;
  }
  TOut.emitII(Mips::BREAK, 0x7, 0, IDLoc, STI);
  return false;
}

// Temporary label for first branch traget
MCContext &Context = TOut.getStreamer().getContext();
MCSymbol *BrTarget;
MCOperand LabelOp;

if (UseTraps) {
  TOut.emitRRI(Mips::TEQ, RtReg, ZeroReg, 0x7, IDLoc, STI);
} else {
  // Branch to the li instruction.
  BrTarget = Context.createTempSymbol();
  LabelOp = MCOperand::createExpr(MCSymbolRefExpr::create(BrTarget, Context));
  TOut.emitRRX(Mips::BNE, RtReg, ZeroReg, LabelOp, IDLoc, STI);
}

TOut.emitRR(DivOp, RsReg, RtReg, IDLoc, STI);

if (!UseTraps)
  TOut.emitII(Mips::BREAK, 0x7, 0, IDLoc, STI);

if (!Signed) {
  if (!UseTraps)
    TOut.getStreamer().EmitLabel(BrTarget);

  TOut.emitR(Mips::MFLO, RdReg, IDLoc, STI);
  return false;
}

unsigned ATReg = getATReg(IDLoc);
if (!ATReg)
  return true;

if (!UseTraps)
  TOut.getStreamer().EmitLabel(BrTarget);

TOut.emitRRI(Mips::ADDiu, ATReg, ZeroReg, -1, IDLoc, STI);

// Temporary label for the second branch target.
MCSymbol *BrTargetEnd = Context.createTempSymbol();
MCOperand LabelOpEnd =
    MCOperand::createExpr(MCSymbolRefExpr::create(BrTargetEnd, Context));

// Branch to the mflo instruction.
TOut.emitRRX(Mips::BNE, RtReg, ATReg, LabelOpEnd, IDLoc, STI);

if (IsMips64) {
  TOut.emitRRI(Mips::ADDiu, ATReg, ZeroReg, 1, IDLoc, STI);
  TOut.emitRRI(Mips::DSLL32, ATReg, ATReg, 0x1f, IDLoc, STI);
} else {
  TOut.emitRI(Mips::LUi, ATReg, (uint16_t)0x8000, IDLoc, STI);
}

if (UseTraps)
  TOut.emitRRI(Mips::TEQ, RsReg, ATReg, 0x6, IDLoc, STI);
else {
  // Branch to the mflo instruction.
  TOut.emitRRX(Mips::BNE, RsReg, ATReg, LabelOpEnd, IDLoc, STI);
  TOut.emitRRI(Mips::SLL, ZeroReg, ZeroReg, 0, IDLoc, STI);
  TOut.emitII(Mips::BREAK, 0x6, 0, IDLoc, STI);
}

TOut.getStreamer().EmitLabel(BrTargetEnd);
TOut.emitR(Mips::MFLO, RdReg, IDLoc, STI);
return false;
4069}

4071bool MipsAsmParser::expandTrunc(MCInst &Inst, bool IsDouble, bool Is64FPU,
                              SMLoc IDLoc, MCStreamer &Out,
                              const MCSubtargetInfo *STI) {
MipsTargetStreamer &TOut = getTargetStreamer();

assert(Inst.getNumOperands() == 3 && "Invalid operand count")(static_cast <bool> (Inst.getNumOperands() == 3 &&
 "Invalid operand count") ? void (0) : __assert_fail ("Inst.getNumOperands() == 3 && \"Invalid operand count\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 4076, __extension__ __PRETTY_FUNCTION__));
assert(Inst.getOperand(0).isReg() && Inst.getOperand(1).isReg() &&(static_cast <bool> (Inst.getOperand(0).isReg() &&
 Inst.getOperand(1).isReg() && Inst.getOperand(2).isReg
() && "Invalid instruction operand.") ? void (0) : __assert_fail
 ("Inst.getOperand(0).isReg() && Inst.getOperand(1).isReg() && Inst.getOperand(2).isReg() && \"Invalid instruction operand.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 4078, __extension__ __PRETTY_FUNCTION__))
       Inst.getOperand(2).isReg() && "Invalid instruction operand.")(static_cast <bool> (Inst.getOperand(0).isReg() &&
 Inst.getOperand(1).isReg() && Inst.getOperand(2).isReg
() && "Invalid instruction operand.") ? void (0) : __assert_fail
 ("Inst.getOperand(0).isReg() && Inst.getOperand(1).isReg() && Inst.getOperand(2).isReg() && \"Invalid instruction operand.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 4078, __extension__ __PRETTY_FUNCTION__));

unsigned FirstReg = Inst.getOperand(0).getReg();
unsigned SecondReg = Inst.getOperand(1).getReg();
unsigned ThirdReg = Inst.getOperand(2).getReg();

if (hasMips1() && !hasMips2()) {
  unsigned ATReg = getATReg(IDLoc);
  if (!ATReg)
    return true;
  TOut.emitRR(Mips::CFC1, ThirdReg, Mips::RA, IDLoc, STI);
  TOut.emitRR(Mips::CFC1, ThirdReg, Mips::RA, IDLoc, STI);
  TOut.emitNop(IDLoc, STI);
  TOut.emitRRI(Mips::ORi, ATReg, ThirdReg, 0x3, IDLoc, STI);
  TOut.emitRRI(Mips::XORi, ATReg, ATReg, 0x2, IDLoc, STI);
  TOut.emitRR(Mips::CTC1, Mips::RA, ATReg, IDLoc, STI);
  TOut.emitNop(IDLoc, STI);
  TOut.emitRR(IsDouble ? (Is64FPU ? Mips::CVT_W_D64 : Mips::CVT_W_D32)
                       : Mips::CVT_W_S,
              FirstReg, SecondReg, IDLoc, STI);
  TOut.emitRR(Mips::CTC1, Mips::RA, ThirdReg, IDLoc, STI);
  TOut.emitNop(IDLoc, STI);
  return false;
}

TOut.emitRR(IsDouble ? (Is64FPU ? Mips::TRUNC_W_D64 : Mips::TRUNC_W_D32)
                     : Mips::TRUNC_W_S,
            FirstReg, SecondReg, IDLoc, STI);

return false;
4108}

4110bool MipsAsmParser::expandUlh(MCInst &Inst, bool Signed, SMLoc IDLoc,
                            MCStreamer &Out, const MCSubtargetInfo *STI) {
if (hasMips32r6() || hasMips64r6()) {
  return Error(IDLoc, "instruction not supported on mips32r6 or mips64r6");
}

const MCOperand &DstRegOp = Inst.getOperand(0);
assert(DstRegOp.isReg() && "expected register operand kind")(static_cast <bool> (DstRegOp.isReg() && "expected register operand kind"
) ? void (0) : __assert_fail ("DstRegOp.isReg() && \"expected register operand kind\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 4117, __extension__ __PRETTY_FUNCTION__));
const MCOperand &SrcRegOp = Inst.getOperand(1);
assert(SrcRegOp.isReg() && "expected register operand kind")(static_cast <bool> (SrcRegOp.isReg() && "expected register operand kind"
) ? void (0) : __assert_fail ("SrcRegOp.isReg() && \"expected register operand kind\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 4119, __extension__ __PRETTY_FUNCTION__));
const MCOperand &OffsetImmOp = Inst.getOperand(2);
assert(OffsetImmOp.isImm() && "expected immediate operand kind")(static_cast <bool> (OffsetImmOp.isImm() && "expected immediate operand kind"
) ? void (0) : __assert_fail ("OffsetImmOp.isImm() && \"expected immediate operand kind\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 4121, __extension__ __PRETTY_FUNCTION__));

MipsTargetStreamer &TOut = getTargetStreamer();
unsigned DstReg = DstRegOp.getReg();
unsigned SrcReg = SrcRegOp.getReg();
int64_t OffsetValue = OffsetImmOp.getImm();

// NOTE: We always need AT for ULHU, as it is always used as the source
// register for one of the LBu's.
warnIfNoMacro(IDLoc);
unsigned ATReg = getATReg(IDLoc);
if (!ATReg)
  return true;

bool IsLargeOffset = !(isInt<16>(OffsetValue + 1) && isInt<16>(OffsetValue));
if (IsLargeOffset) {
  if (loadImmediate(OffsetValue, ATReg, SrcReg, !ABI.ArePtrs64bit(), true,
                    IDLoc, Out, STI))
    return true;
}

int64_t FirstOffset = IsLargeOffset ? 0 : OffsetValue;
int64_t SecondOffset = IsLargeOffset ? 1 : (OffsetValue + 1);
if (isLittle())
  std::swap(FirstOffset, SecondOffset);

unsigned FirstLbuDstReg = IsLargeOffset ? DstReg : ATReg;
unsigned SecondLbuDstReg = IsLargeOffset ? ATReg : DstReg;

unsigned LbuSrcReg = IsLargeOffset ? ATReg : SrcReg;
unsigned SllReg = IsLargeOffset ? DstReg : ATReg;

TOut.emitRRI(Signed ? Mips::LB : Mips::LBu, FirstLbuDstReg, LbuSrcReg,
             FirstOffset, IDLoc, STI);
TOut.emitRRI(Mips::LBu, SecondLbuDstReg, LbuSrcReg, SecondOffset, IDLoc, STI);
TOut.emitRRI(Mips::SLL, SllReg, SllReg, 8, IDLoc, STI);
TOut.emitRRR(Mips::OR, DstReg, DstReg, ATReg, IDLoc, STI);

return false;
4160}

4162bool MipsAsmParser::expandUsh(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
                            const MCSubtargetInfo *STI) {
if (hasMips32r6() || hasMips64r6()) {
  return Error(IDLoc, "instruction not supported on mips32r6 or mips64r6");
}

const MCOperand &DstRegOp = Inst.getOperand(0);
assert(DstRegOp.isReg() && "expected register operand kind")(static_cast <bool> (DstRegOp.isReg() && "expected register operand kind"
) ? void (0) : __assert_fail ("DstRegOp.isReg() && \"expected register operand kind\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 4169, __extension__ __PRETTY_FUNCTION__));
const MCOperand &SrcRegOp = Inst.getOperand(1);
assert(SrcRegOp.isReg() && "expected register operand kind")(static_cast <bool> (SrcRegOp.isReg() && "expected register operand kind"
) ? void (0) : __assert_fail ("SrcRegOp.isReg() && \"expected register operand kind\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 4171, __extension__ __PRETTY_FUNCTION__));
const MCOperand &OffsetImmOp = Inst.getOperand(2);
assert(OffsetImmOp.isImm() && "expected immediate operand kind")(static_cast <bool> (OffsetImmOp.isImm() && "expected immediate operand kind"
) ? void (0) : __assert_fail ("OffsetImmOp.isImm() && \"expected immediate operand kind\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 4173, __extension__ __PRETTY_FUNCTION__));

MipsTargetStreamer &TOut = getTargetStreamer();
unsigned DstReg = DstRegOp.getReg();
unsigned SrcReg = SrcRegOp.getReg();
int64_t OffsetValue = OffsetImmOp.getImm();

warnIfNoMacro(IDLoc);
unsigned ATReg = getATReg(IDLoc);
if (!ATReg)
  return true;

bool IsLargeOffset = !(isInt<16>(OffsetValue + 1) && isInt<16>(OffsetValue));
if (IsLargeOffset) {
  if (loadImmediate(OffsetValue, ATReg, SrcReg, !ABI.ArePtrs64bit(), true,
                    IDLoc, Out, STI))
    return true;
}

int64_t FirstOffset = IsLargeOffset ? 1 : (OffsetValue + 1);
int64_t SecondOffset = IsLargeOffset ? 0 : OffsetValue;
if (isLittle())
  std::swap(FirstOffset, SecondOffset);

if (IsLargeOffset) {
  TOut.emitRRI(Mips::SB, DstReg, ATReg, FirstOffset, IDLoc, STI);
  TOut.emitRRI(Mips::SRL, DstReg, DstReg, 8, IDLoc, STI);
  TOut.emitRRI(Mips::SB, DstReg, ATReg, SecondOffset, IDLoc, STI);
  TOut.emitRRI(Mips::LBu, ATReg, ATReg, 0, IDLoc, STI);
  TOut.emitRRI(Mips::SLL, DstReg, DstReg, 8, IDLoc, STI);
  TOut.emitRRR(Mips::OR, DstReg, DstReg, ATReg, IDLoc, STI);
} else {
  TOut.emitRRI(Mips::SB, DstReg, SrcReg, FirstOffset, IDLoc, STI);
  TOut.emitRRI(Mips::SRL, ATReg, DstReg, 8, IDLoc, STI);
  TOut.emitRRI(Mips::SB, ATReg, SrcReg, SecondOffset, IDLoc, STI);
}

return false;
4211}

4213bool MipsAsmParser::expandUxw(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
                            const MCSubtargetInfo *STI) {
if (hasMips32r6() || hasMips64r6()) {
  return Error(IDLoc, "instruction not supported on mips32r6 or mips64r6");
}

const MCOperand &DstRegOp = Inst.getOperand(0);
assert(DstRegOp.isReg() && "expected register operand kind")(static_cast <bool> (DstRegOp.isReg() && "expected register operand kind"
) ? void (0) : __assert_fail ("DstRegOp.isReg() && \"expected register operand kind\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 4220, __extension__ __PRETTY_FUNCTION__));
const MCOperand &SrcRegOp = Inst.getOperand(1);
assert(SrcRegOp.isReg() && "expected register operand kind")(static_cast <bool> (SrcRegOp.isReg() && "expected register operand kind"
) ? void (0) : __assert_fail ("SrcRegOp.isReg() && \"expected register operand kind\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 4222, __extension__ __PRETTY_FUNCTION__));
const MCOperand &OffsetImmOp = Inst.getOperand(2);
assert(OffsetImmOp.isImm() && "expected immediate operand kind")(static_cast <bool> (OffsetImmOp.isImm() && "expected immediate operand kind"
) ? void (0) : __assert_fail ("OffsetImmOp.isImm() && \"expected immediate operand kind\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 4224, __extension__ __PRETTY_FUNCTION__));

MipsTargetStreamer &TOut = getTargetStreamer();
unsigned DstReg = DstRegOp.getReg();
unsigned SrcReg = SrcRegOp.getReg();
int64_t OffsetValue = OffsetImmOp.getImm();

// Compute left/right load/store offsets.
bool IsLargeOffset = !(isInt<16>(OffsetValue + 3) && isInt<16>(OffsetValue));
int64_t LxlOffset = IsLargeOffset ? 0 : OffsetValue;
int64_t LxrOffset = IsLargeOffset ? 3 : (OffsetValue + 3);
if (isLittle())
  std::swap(LxlOffset, LxrOffset);

bool IsLoadInst = (Inst.getOpcode() == Mips::Ulw);
bool DoMove = IsLoadInst && (SrcReg == DstReg) && !IsLargeOffset;
unsigned TmpReg = SrcReg;
if (IsLargeOffset || DoMove) {
  warnIfNoMacro(IDLoc);
  TmpReg = getATReg(IDLoc);
  if (!TmpReg)
    return true;
}

if (IsLargeOffset) {
  if (loadImmediate(OffsetValue, TmpReg, SrcReg, !ABI.ArePtrs64bit(), true,
                    IDLoc, Out, STI))
    return true;
}

if (DoMove)
  std::swap(DstReg, TmpReg);

unsigned XWL = IsLoadInst ? Mips::LWL : Mips::SWL;
unsigned XWR = IsLoadInst ? Mips::LWR : Mips::SWR;
TOut.emitRRI(XWL, DstReg, TmpReg, LxlOffset, IDLoc, STI);
TOut.emitRRI(XWR, DstReg, TmpReg, LxrOffset, IDLoc, STI);

if (DoMove)
  TOut.emitRRR(Mips::OR, TmpReg, DstReg, Mips::ZERO, IDLoc, STI);

return false;
4266}

4268bool MipsAsmParser::expandAliasImmediate(MCInst &Inst, SMLoc IDLoc,
                                       MCStreamer &Out,
                                       const MCSubtargetInfo *STI) {
MipsTargetStreamer &TOut = getTargetStreamer();

assert(Inst.getNumOperands() == 3 && "Invalid operand count")(static_cast <bool> (Inst.getNumOperands() == 3 &&
 "Invalid operand count") ? void (0) : __assert_fail ("Inst.getNumOperands() == 3 && \"Invalid operand count\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 4273, __extension__ __PRETTY_FUNCTION__));
assert(Inst.getOperand(0).isReg() &&(static_cast <bool> (Inst.getOperand(0).isReg() &&
 Inst.getOperand(1).isReg() && Inst.getOperand(2).isImm
() && "Invalid instruction operand.") ? void (0) : __assert_fail
 ("Inst.getOperand(0).isReg() && Inst.getOperand(1).isReg() && Inst.getOperand(2).isImm() && \"Invalid instruction operand.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 4276, __extension__ __PRETTY_FUNCTION__))
       Inst.getOperand(1).isReg() &&(static_cast <bool> (Inst.getOperand(0).isReg() &&
 Inst.getOperand(1).isReg() && Inst.getOperand(2).isImm
() && "Invalid instruction operand.") ? void (0) : __assert_fail
 ("Inst.getOperand(0).isReg() && Inst.getOperand(1).isReg() && Inst.getOperand(2).isImm() && \"Invalid instruction operand.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 4276, __extension__ __PRETTY_FUNCTION__))
       Inst.getOperand(2).isImm() && "Invalid instruction operand.")(static_cast <bool> (Inst.getOperand(0).isReg() &&
 Inst.getOperand(1).isReg() && Inst.getOperand(2).isImm
() && "Invalid instruction operand.") ? void (0) : __assert_fail
 ("Inst.getOperand(0).isReg() && Inst.getOperand(1).isReg() && Inst.getOperand(2).isImm() && \"Invalid instruction operand.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 4276, __extension__ __PRETTY_FUNCTION__));

unsigned ATReg = Mips::NoRegister;
unsigned FinalDstReg = Mips::NoRegister;
unsigned DstReg = Inst.getOperand(0).getReg();
unsigned SrcReg = Inst.getOperand(1).getReg();
int64_t ImmValue = Inst.getOperand(2).getImm();

bool Is32Bit = isInt<32>(ImmValue) || (!isGP64bit() && isUInt<32>(ImmValue));

unsigned FinalOpcode = Inst.getOpcode();

if (DstReg == SrcReg) {
  ATReg = getATReg(Inst.getLoc());
  if (!ATReg)
    return true;
  FinalDstReg = DstReg;
  DstReg = ATReg;
}

if (!loadImmediate(ImmValue, DstReg, Mips::NoRegister, Is32Bit, false, Inst.getLoc(), Out, STI)) {
  switch (FinalOpcode) {
  default:
    llvm_unreachable("unimplemented expansion")::llvm::llvm_unreachable_internal("unimplemented expansion", "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 4299);
  case Mips::ADDi:
    FinalOpcode = Mips::ADD;
    break;
  case Mips::ADDiu:
    FinalOpcode = Mips::ADDu;
    break;
  case Mips::ANDi:
    FinalOpcode = Mips::AND;
    break;
  case Mips::NORImm:
    FinalOpcode = Mips::NOR;
    break;
  case Mips::ORi:
    FinalOpcode = Mips::OR;
    break;
  case Mips::SLTi:
    FinalOpcode = Mips::SLT;
    break;
  case Mips::SLTiu:
    FinalOpcode = Mips::SLTu;
    break;
  case Mips::XORi:
    FinalOpcode = Mips::XOR;
    break;
  case Mips::ADDi_MM:
    FinalOpcode = Mips::ADD_MM;
    break;
  case Mips::ADDiu_MM:
    FinalOpcode = Mips::ADDu_MM;
    break;
  case Mips::ANDi_MM:
    FinalOpcode = Mips::AND_MM;
    break;
  case Mips::ORi_MM:
    FinalOpcode = Mips::OR_MM;
    break;
  case Mips::SLTi_MM:
    FinalOpcode = Mips::SLT_MM;
    break;
  case Mips::SLTiu_MM:
    FinalOpcode = Mips::SLTu_MM;
    break;
  case Mips::XORi_MM:
    FinalOpcode = Mips::XOR_MM;
    break;
  case Mips::ANDi64:
    FinalOpcode = Mips::AND64;
    break;
  case Mips::NORImm64:
    FinalOpcode = Mips::NOR64;
    break;
  case Mips::ORi64:
    FinalOpcode = Mips::OR64;
    break;
  case Mips::SLTImm64:
    FinalOpcode = Mips::SLT64;
    break;
  case Mips::SLTUImm64:
    FinalOpcode = Mips::SLTu64;
    break;
  case Mips::XORi64:
    FinalOpcode = Mips::XOR64;
    break;
  }

  if (FinalDstReg == Mips::NoRegister)
    TOut.emitRRR(FinalOpcode, DstReg, DstReg, SrcReg, IDLoc, STI);
  else
    TOut.emitRRR(FinalOpcode, FinalDstReg, FinalDstReg, DstReg, IDLoc, STI);
  return false;
}
return true;
4372}

4374bool MipsAsmParser::expandRotation(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
                                 const MCSubtargetInfo *STI) {
MipsTargetStreamer &TOut = getTargetStreamer();
unsigned ATReg = Mips::NoRegister;
unsigned DReg = Inst.getOperand(0).getReg();
unsigned SReg = Inst.getOperand(1).getReg();
unsigned TReg = Inst.getOperand(2).getReg();
unsigned TmpReg = DReg;

unsigned FirstShift = Mips::NOP;
unsigned SecondShift = Mips::NOP;

if (hasMips32r2()) {
  if (DReg == SReg) {
    TmpReg = getATReg(Inst.getLoc());
    if (!TmpReg)
      return true;
  }

  if (Inst.getOpcode() == Mips::ROL) {
    TOut.emitRRR(Mips::SUBu, TmpReg, Mips::ZERO, TReg, Inst.getLoc(), STI);
    TOut.emitRRR(Mips::ROTRV, DReg, SReg, TmpReg, Inst.getLoc(), STI);
    return false;
  }

  if (Inst.getOpcode() == Mips::ROR) {
    TOut.emitRRR(Mips::ROTRV, DReg, SReg, TReg, Inst.getLoc(), STI);
    return false;
  }

  return true;
}

if (hasMips32()) {
  switch (Inst.getOpcode()) {
  default:
    llvm_unreachable("unexpected instruction opcode")::llvm::llvm_unreachable_internal("unexpected instruction opcode"
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 4410);
  case Mips::ROL:
    FirstShift = Mips::SRLV;
    SecondShift = Mips::SLLV;
    break;
  case Mips::ROR:
    FirstShift = Mips::SLLV;
    SecondShift = Mips::SRLV;
    break;
  }

  ATReg = getATReg(Inst.getLoc());
  if (!ATReg)
    return true;

  TOut.emitRRR(Mips::SUBu, ATReg, Mips::ZERO, TReg, Inst.getLoc(), STI);
  TOut.emitRRR(FirstShift, ATReg, SReg, ATReg, Inst.getLoc(), STI);
  TOut.emitRRR(SecondShift, DReg, SReg, TReg, Inst.getLoc(), STI);
  TOut.emitRRR(Mips::OR, DReg, DReg, ATReg, Inst.getLoc(), STI);

  return false;
}

return true;
4434}

4436bool MipsAsmParser::expandRotationImm(MCInst &Inst, SMLoc IDLoc,
                                    MCStreamer &Out,
                                    const MCSubtargetInfo *STI) {
MipsTargetStreamer &TOut = getTargetStreamer();
unsigned ATReg = Mips::NoRegister;
unsigned DReg = Inst.getOperand(0).getReg();
unsigned SReg = Inst.getOperand(1).getReg();
int64_t ImmValue = Inst.getOperand(2).getImm();

unsigned FirstShift = Mips::NOP;
unsigned SecondShift = Mips::NOP;

if (hasMips32r2()) {
  if (Inst.getOpcode() == Mips::ROLImm) {
    uint64_t MaxShift = 32;
    uint64_t ShiftValue = ImmValue;
    if (ImmValue != 0)
      ShiftValue = MaxShift - ImmValue;
    TOut.emitRRI(Mips::ROTR, DReg, SReg, ShiftValue, Inst.getLoc(), STI);
    return false;
  }

  if (Inst.getOpcode() == Mips::RORImm) {
    TOut.emitRRI(Mips::ROTR, DReg, SReg, ImmValue, Inst.getLoc(), STI);
    return false;
  }

  return true;
}

if (hasMips32()) {
  if (ImmValue == 0) {
    TOut.emitRRI(Mips::SRL, DReg, SReg, 0, Inst.getLoc(), STI);
    return false;
  }

  switch (Inst.getOpcode()) {
  default:
    llvm_unreachable("unexpected instruction opcode")::llvm::llvm_unreachable_internal("unexpected instruction opcode"
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 4474);
  case Mips::ROLImm:
    FirstShift = Mips::SLL;
    SecondShift = Mips::SRL;
    break;
  case Mips::RORImm:
    FirstShift = Mips::SRL;
    SecondShift = Mips::SLL;
    break;
  }

  ATReg = getATReg(Inst.getLoc());
  if (!ATReg)
    return true;

  TOut.emitRRI(FirstShift, ATReg, SReg, ImmValue, Inst.getLoc(), STI);
  TOut.emitRRI(SecondShift, DReg, SReg, 32 - ImmValue, Inst.getLoc(), STI);
  TOut.emitRRR(Mips::OR, DReg, DReg, ATReg, Inst.getLoc(), STI);

  return false;
}

return true;
4497}

4499bool MipsAsmParser::expandDRotation(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
                                  const MCSubtargetInfo *STI) {
MipsTargetStreamer &TOut = getTargetStreamer();
unsigned ATReg = Mips::NoRegister;
unsigned DReg = Inst.getOperand(0).getReg();
unsigned SReg = Inst.getOperand(1).getReg();
unsigned TReg = Inst.getOperand(2).getReg();
unsigned TmpReg = DReg;

unsigned FirstShift = Mips::NOP;
unsigned SecondShift = Mips::NOP;

if (hasMips64r2()) {
  if (TmpReg == SReg) {
    TmpReg = getATReg(Inst.getLoc());
    if (!TmpReg)
      return true;
  }

  if (Inst.getOpcode() == Mips::DROL) {
    TOut.emitRRR(Mips::DSUBu, TmpReg, Mips::ZERO, TReg, Inst.getLoc(), STI);
    TOut.emitRRR(Mips::DROTRV, DReg, SReg, TmpReg, Inst.getLoc(), STI);
    return false;
  }

  if (Inst.getOpcode() == Mips::DROR) {
    TOut.emitRRR(Mips::DROTRV, DReg, SReg, TReg, Inst.getLoc(), STI);
    return false;
  }

  return true;
}

if (hasMips64()) {
  switch (Inst.getOpcode()) {
  default:
    llvm_unreachable("unexpected instruction opcode")::llvm::llvm_unreachable_internal("unexpected instruction opcode"
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 4535);
  case Mips::DROL:
    FirstShift = Mips::DSRLV;
    SecondShift = Mips::DSLLV;
    break;
  case Mips::DROR:
    FirstShift = Mips::DSLLV;
    SecondShift = Mips::DSRLV;
    break;
  }

  ATReg = getATReg(Inst.getLoc());
  if (!ATReg)
    return true;

  TOut.emitRRR(Mips::DSUBu, ATReg, Mips::ZERO, TReg, Inst.getLoc(), STI);
  TOut.emitRRR(FirstShift, ATReg, SReg, ATReg, Inst.getLoc(), STI);
  TOut.emitRRR(SecondShift, DReg, SReg, TReg, Inst.getLoc(), STI);
  TOut.emitRRR(Mips::OR, DReg, DReg, ATReg, Inst.getLoc(), STI);

  return false;
}

return true;
4559}

4561bool MipsAsmParser::expandDRotationImm(MCInst &Inst, SMLoc IDLoc,
                                     MCStreamer &Out,
                                     const MCSubtargetInfo *STI) {
MipsTargetStreamer &TOut = getTargetStreamer();
unsigned ATReg = Mips::NoRegister;
unsigned DReg = Inst.getOperand(0).getReg();
unsigned SReg = Inst.getOperand(1).getReg();
int64_t ImmValue = Inst.getOperand(2).getImm() % 64;

unsigned FirstShift = Mips::NOP;
unsigned SecondShift = Mips::NOP;

MCInst TmpInst;

if (hasMips64r2()) {
  unsigned FinalOpcode = Mips::NOP;
  if (ImmValue == 0)
    FinalOpcode = Mips::DROTR;
  else if (ImmValue % 32 == 0)
    FinalOpcode = Mips::DROTR32;
  else if ((ImmValue >= 1) && (ImmValue <= 32)) {
    if (Inst.getOpcode() == Mips::DROLImm)
      FinalOpcode = Mips::DROTR32;
    else
      FinalOpcode = Mips::DROTR;
  } else if (ImmValue >= 33) {
    if (Inst.getOpcode() == Mips::DROLImm)
      FinalOpcode = Mips::DROTR;
    else
      FinalOpcode = Mips::DROTR32;
  }

  uint64_t ShiftValue = ImmValue % 32;
  if (Inst.getOpcode() == Mips::DROLImm)
    ShiftValue = (32 - ImmValue % 32) % 32;

  TOut.emitRRI(FinalOpcode, DReg, SReg, ShiftValue, Inst.getLoc(), STI);

  return false;
}

if (hasMips64()) {
  if (ImmValue == 0) {
    TOut.emitRRI(Mips::DSRL, DReg, SReg, 0, Inst.getLoc(), STI);
    return false;
  }

  switch (Inst.getOpcode()) {
  default:
    llvm_unreachable("unexpected instruction opcode")::llvm::llvm_unreachable_internal("unexpected instruction opcode"
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 4610);
  case Mips::DROLImm:
    if ((ImmValue >= 1) && (ImmValue <= 31)) {
      FirstShift = Mips::DSLL;
      SecondShift = Mips::DSRL32;
    }
    if (ImmValue == 32) {
      FirstShift = Mips::DSLL32;
      SecondShift = Mips::DSRL32;
    }
    if ((ImmValue >= 33) && (ImmValue <= 63)) {
      FirstShift = Mips::DSLL32;
      SecondShift = Mips::DSRL;
    }
    break;
  case Mips::DRORImm:
    if ((ImmValue >= 1) && (ImmValue <= 31)) {
      FirstShift = Mips::DSRL;
      SecondShift = Mips::DSLL32;
    }
    if (ImmValue == 32) {
      FirstShift = Mips::DSRL32;
      SecondShift = Mips::DSLL32;
    }
    if ((ImmValue >= 33) && (ImmValue <= 63)) {
      FirstShift = Mips::DSRL32;
      SecondShift = Mips::DSLL;
    }
    break;
  }

  ATReg = getATReg(Inst.getLoc());
  if (!ATReg)
    return true;

  TOut.emitRRI(FirstShift, ATReg, SReg, ImmValue % 32, Inst.getLoc(), STI);
  TOut.emitRRI(SecondShift, DReg, SReg, (32 - ImmValue % 32) % 32,
               Inst.getLoc(), STI);
  TOut.emitRRR(Mips::OR, DReg, DReg, ATReg, Inst.getLoc(), STI);

  return false;
}

return true;
4654}

4656bool MipsAsmParser::expandAbs(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
                            const MCSubtargetInfo *STI) {
MipsTargetStreamer &TOut = getTargetStreamer();
unsigned FirstRegOp = Inst.getOperand(0).getReg();
unsigned SecondRegOp = Inst.getOperand(1).getReg();

TOut.emitRI(Mips::BGEZ, SecondRegOp, 8, IDLoc, STI);
if (FirstRegOp != SecondRegOp)
  TOut.emitRRR(Mips::ADDu, FirstRegOp, SecondRegOp, Mips::ZERO, IDLoc, STI);
else
  TOut.emitEmptyDelaySlot(false, IDLoc, STI);
TOut.emitRRR(Mips::SUB, FirstRegOp, Mips::ZERO, SecondRegOp, IDLoc, STI);

return false;
4670}

4672bool MipsAsmParser::expandMulImm(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
                               const MCSubtargetInfo *STI) {
MipsTargetStreamer &TOut = getTargetStreamer();
unsigned ATReg = Mips::NoRegister;
unsigned DstReg = Inst.getOperand(0).getReg();
unsigned SrcReg = Inst.getOperand(1).getReg();
int32_t ImmValue = Inst.getOperand(2).getImm();

ATReg = getATReg(IDLoc);
if (!ATReg)
  return true;

loadImmediate(ImmValue, ATReg, Mips::NoRegister, true, false, IDLoc, Out, STI);

TOut.emitRR(Inst.getOpcode() == Mips::MULImmMacro ? Mips::MULT : Mips::DMULT,
            SrcReg, ATReg, IDLoc, STI);

TOut.emitR(Mips::MFLO, DstReg, IDLoc, STI);

return false;
4692}

4694bool MipsAsmParser::expandMulO(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
                             const MCSubtargetInfo *STI) {
MipsTargetStreamer &TOut = getTargetStreamer();
unsigned ATReg = Mips::NoRegister;
unsigned DstReg = Inst.getOperand(0).getReg();
unsigned SrcReg = Inst.getOperand(1).getReg();
unsigned TmpReg = Inst.getOperand(2).getReg();

ATReg = getATReg(Inst.getLoc());
if (!ATReg)
  return true;

TOut.emitRR(Inst.getOpcode() == Mips::MULOMacro ? Mips::MULT : Mips::DMULT,
            SrcReg, TmpReg, IDLoc, STI);

TOut.emitR(Mips::MFLO, DstReg, IDLoc, STI);

TOut.emitRRI(Inst.getOpcode() == Mips::MULOMacro ? Mips::SRA : Mips::DSRA32,
             DstReg, DstReg, 0x1F, IDLoc, STI);

TOut.emitR(Mips::MFHI, ATReg, IDLoc, STI);

if (useTraps()) {
  TOut.emitRRI(Mips::TNE, DstReg, ATReg, 6, IDLoc, STI);
} else {
  MCContext & Context = TOut.getStreamer().getContext();
  MCSymbol * BrTarget = Context.createTempSymbol();
  MCOperand LabelOp =
      MCOperand::createExpr(MCSymbolRefExpr::create(BrTarget, Context));

  TOut.emitRRX(Mips::BEQ, DstReg, ATReg, LabelOp, IDLoc, STI);
  if (AssemblerOptions.back()->isReorder())
    TOut.emitNop(IDLoc, STI);
  TOut.emitII(Mips::BREAK, 6, 0, IDLoc, STI);

  TOut.getStreamer().EmitLabel(BrTarget);
}
TOut.emitR(Mips::MFLO, DstReg, IDLoc, STI);

return false;
4734}

4736bool MipsAsmParser::expandMulOU(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
                              const MCSubtargetInfo *STI) {
MipsTargetStreamer &TOut = getTargetStreamer();
unsigned ATReg = Mips::NoRegister;
unsigned DstReg = Inst.getOperand(0).getReg();
unsigned SrcReg = Inst.getOperand(1).getReg();
unsigned TmpReg = Inst.getOperand(2).getReg();

ATReg = getATReg(IDLoc);
if (!ATReg)
  return true;

TOut.emitRR(Inst.getOpcode() == Mips::MULOUMacro ? Mips::MULTu : Mips::DMULTu,
            SrcReg, TmpReg, IDLoc, STI);

TOut.emitR(Mips::MFHI, ATReg, IDLoc, STI);
TOut.emitR(Mips::MFLO, DstReg, IDLoc, STI);
if (useTraps()) {
  TOut.emitRRI(Mips::TNE, ATReg, Mips::ZERO, 6, IDLoc, STI);
} else {
  MCContext & Context = TOut.getStreamer().getContext();
  MCSymbol * BrTarget = Context.createTempSymbol();
  MCOperand LabelOp =
      MCOperand::createExpr(MCSymbolRefExpr::create(BrTarget, Context));

  TOut.emitRRX(Mips::BEQ, ATReg, Mips::ZERO, LabelOp, IDLoc, STI);
  if (AssemblerOptions.back()->isReorder())
    TOut.emitNop(IDLoc, STI);
  TOut.emitII(Mips::BREAK, 6, 0, IDLoc, STI);

  TOut.getStreamer().EmitLabel(BrTarget);
}

return false;
4770}

4772bool MipsAsmParser::expandDMULMacro(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
                                  const MCSubtargetInfo *STI) {
MipsTargetStreamer &TOut = getTargetStreamer();
unsigned DstReg = Inst.getOperand(0).getReg();
unsigned SrcReg = Inst.getOperand(1).getReg();
unsigned TmpReg = Inst.getOperand(2).getReg();

TOut.emitRR(Mips::DMULTu, SrcReg, TmpReg, IDLoc, STI);
TOut.emitR(Mips::MFLO, DstReg, IDLoc, STI);

return false;
4783}

4785// Expand 'ld $<reg> offset($reg2)' to 'lw $<reg>, offset($reg2);
4786//                                      lw $<reg+1>>, offset+4($reg2)'
4787// or expand 'sd $<reg> offset($reg2)' to 'sw $<reg>, offset($reg2);
4788//                                         sw $<reg+1>>, offset+4($reg2)'
4789// for O32.
4790bool MipsAsmParser::expandLoadStoreDMacro(MCInst &Inst, SMLoc IDLoc,
                                        MCStreamer &Out,
                                        const MCSubtargetInfo *STI,
                                        bool IsLoad) {
if (!isABI_O32())
  return true;

warnIfNoMacro(IDLoc);

MipsTargetStreamer &TOut = getTargetStreamer();
unsigned Opcode = IsLoad ? Mips::LW : Mips::SW;
unsigned FirstReg = Inst.getOperand(0).getReg();
unsigned SecondReg = nextReg(FirstReg);
unsigned BaseReg = Inst.getOperand(1).getReg();
if (!SecondReg)
  return true;

warnIfRegIndexIsAT(FirstReg, IDLoc);

assert(Inst.getOperand(2).isImm() &&(static_cast <bool> (Inst.getOperand(2).isImm() &&
 "Offset for load macro is not immediate!") ? void (0) : __assert_fail
 ("Inst.getOperand(2).isImm() && \"Offset for load macro is not immediate!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 4810, __extension__ __PRETTY_FUNCTION__))
       "Offset for load macro is not immediate!")(static_cast <bool> (Inst.getOperand(2).isImm() &&
 "Offset for load macro is not immediate!") ? void (0) : __assert_fail
 ("Inst.getOperand(2).isImm() && \"Offset for load macro is not immediate!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 4810, __extension__ __PRETTY_FUNCTION__));

MCOperand &FirstOffset = Inst.getOperand(2);
signed NextOffset = FirstOffset.getImm() + 4;
MCOperand SecondOffset = MCOperand::createImm(NextOffset);

if (!isInt<16>(FirstOffset.getImm()) || !isInt<16>(NextOffset))
  return true;

// For loads, clobber the base register with the second load instead of the
// first if the BaseReg == FirstReg.
if (FirstReg != BaseReg || !IsLoad) {
  TOut.emitRRX(Opcode, FirstReg, BaseReg, FirstOffset, IDLoc, STI);
  TOut.emitRRX(Opcode, SecondReg, BaseReg, SecondOffset, IDLoc, STI);
} else {
  TOut.emitRRX(Opcode, SecondReg, BaseReg, SecondOffset, IDLoc, STI);
  TOut.emitRRX(Opcode, FirstReg, BaseReg, FirstOffset, IDLoc, STI);
}

return false;
4830}

4832bool MipsAsmParser::expandSeq(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
                            const MCSubtargetInfo *STI) {

warnIfNoMacro(IDLoc);
MipsTargetStreamer &TOut = getTargetStreamer();

if (Inst.getOperand(1).getReg() != Mips::ZERO &&
    Inst.getOperand(2).getReg() != Mips::ZERO) {
  TOut.emitRRR(Mips::XOR, Inst.getOperand(0).getReg(),
               Inst.getOperand(1).getReg(), Inst.getOperand(2).getReg(),
               IDLoc, STI);
  TOut.emitRRI(Mips::SLTiu, Inst.getOperand(0).getReg(),
               Inst.getOperand(0).getReg(), 1, IDLoc, STI);
  return false;
}

unsigned Reg = 0;
if (Inst.getOperand(1).getReg() == Mips::ZERO) {
  Reg = Inst.getOperand(2).getReg();
} else {
  Reg = Inst.getOperand(1).getReg();
}
TOut.emitRRI(Mips::SLTiu, Inst.getOperand(0).getReg(), Reg, 1, IDLoc, STI);
return false;
4856}

4858bool MipsAsmParser::expandSeqI(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
                             const MCSubtargetInfo *STI) {
warnIfNoMacro(IDLoc);
MipsTargetStreamer &TOut = getTargetStreamer();

unsigned Opc;
int64_t Imm = Inst.getOperand(2).getImm();
unsigned Reg = Inst.getOperand(1).getReg();

if (Imm == 0) {
  TOut.emitRRI(Mips::SLTiu, Inst.getOperand(0).getReg(),
               Inst.getOperand(1).getReg(), 1, IDLoc, STI);
  return false;
} else {

  if (Reg == Mips::ZERO) {
    Warning(IDLoc, "comparison is always false");
    TOut.emitRRR(isGP64bit() ? Mips::DADDu : Mips::ADDu,
                 Inst.getOperand(0).getReg(), Reg, Reg, IDLoc, STI);
    return false;
  }

  if (Imm > -0x8000 && Imm < 0) {
    Imm = -Imm;
    Opc = isGP64bit() ? Mips::DADDiu : Mips::ADDiu;
  } else {
    Opc = Mips::XORi;
  }
}
if (!isUInt<16>(Imm)) {
  unsigned ATReg = getATReg(IDLoc);
  if (!ATReg)
    return true;

  if (loadImmediate(Imm, ATReg, Mips::NoRegister, true, isGP64bit(), IDLoc,
                    Out, STI))
    return true;

  TOut.emitRRR(Mips::XOR, Inst.getOperand(0).getReg(),
               Inst.getOperand(1).getReg(), ATReg, IDLoc, STI);
  TOut.emitRRI(Mips::SLTiu, Inst.getOperand(0).getReg(),
               Inst.getOperand(0).getReg(), 1, IDLoc, STI);
  return false;
}

TOut.emitRRI(Opc, Inst.getOperand(0).getReg(), Inst.getOperand(1).getReg(),
             Imm, IDLoc, STI);
TOut.emitRRI(Mips::SLTiu, Inst.getOperand(0).getReg(),
             Inst.getOperand(0).getReg(), 1, IDLoc, STI);
return false;
4908}

4910// Map the DSP accumulator and control register to the corresponding gpr
4911// operand. Unlike the other alias, the m(f|t)t(lo|hi|acx) instructions
4912// do not map the DSP registers contigously to gpr registers.
4913static unsigned getRegisterForMxtrDSP(MCInst &Inst, bool IsMFDSP) {
switch (Inst.getOpcode()) {
  case Mips::MFTLO:
  case Mips::MTTLO:
    switch (Inst.getOperand(IsMFDSP ? 1 : 0).getReg()) {
      case Mips::AC0:
        return Mips::ZERO;
      case Mips::AC1:
        return Mips::A0;
      case Mips::AC2:
        return Mips::T0;
      case Mips::AC3:
        return Mips::T4;
      default:
        llvm_unreachable("Unknown register for 'mttr' alias!")::llvm::llvm_unreachable_internal("Unknown register for 'mttr' alias!"
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 4927);
  }
  case Mips::MFTHI:
  case Mips::MTTHI:
    switch (Inst.getOperand(IsMFDSP ? 1 : 0).getReg()) {
      case Mips::AC0:
        return Mips::AT;
      case Mips::AC1:
        return Mips::A1;
      case Mips::AC2:
        return Mips::T1;
      case Mips::AC3:
        return Mips::T5;
      default:
        llvm_unreachable("Unknown register for 'mttr' alias!")::llvm::llvm_unreachable_internal("Unknown register for 'mttr' alias!"
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 4941);
  }
  case Mips::MFTACX:
  case Mips::MTTACX:
    switch (Inst.getOperand(IsMFDSP ? 1 : 0).getReg()) {
      case Mips::AC0:
        return Mips::V0;
      case Mips::AC1:
        return Mips::A2;
      case Mips::AC2:
        return Mips::T2;
      case Mips::AC3:
        return Mips::T6;
      default:
        llvm_unreachable("Unknown register for 'mttr' alias!")::llvm::llvm_unreachable_internal("Unknown register for 'mttr' alias!"
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 4955);
  }
  case Mips::MFTDSP:
  case Mips::MTTDSP:
    return Mips::S0;
  default:
    llvm_unreachable("Unknown instruction for 'mttr' dsp alias!")::llvm::llvm_unreachable_internal("Unknown instruction for 'mttr' dsp alias!"
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 4961);
}
4963}

4965// Map the floating point register operand to the corresponding register
4966// operand.
4967static unsigned getRegisterForMxtrFP(MCInst &Inst, bool IsMFTC1) {
switch (Inst.getOperand(IsMFTC1 ? 1 : 0).getReg()) {
  case Mips::F0:  return Mips::ZERO;
  case Mips::F1:  return Mips::AT;
  case Mips::F2:  return Mips::V0;
  case Mips::F3:  return Mips::V1;
  case Mips::F4:  return Mips::A0;
  case Mips::F5:  return Mips::A1;
  case Mips::F6:  return Mips::A2;
  case Mips::F7:  return Mips::A3;
  case Mips::F8:  return Mips::T0;
  case Mips::F9:  return Mips::T1;
  case Mips::F10: return Mips::T2;
  case Mips::F11: return Mips::T3;
  case Mips::F12: return Mips::T4;
  case Mips::F13: return Mips::T5;
  case Mips::F14: return Mips::T6;
  case Mips::F15: return Mips::T7;
  case Mips::F16: return Mips::S0;
  case Mips::F17: return Mips::S1;
  case Mips::F18: return Mips::S2;
  case Mips::F19: return Mips::S3;
  case Mips::F20: return Mips::S4;
  case Mips::F21: return Mips::S5;
  case Mips::F22: return Mips::S6;
  case Mips::F23: return Mips::S7;
  case Mips::F24: return Mips::T8;
  case Mips::F25: return Mips::T9;
  case Mips::F26: return Mips::K0;
  case Mips::F27: return Mips::K1;
  case Mips::F28: return Mips::GP;
  case Mips::F29: return Mips::SP;
  case Mips::F30: return Mips::FP;
  case Mips::F31: return Mips::RA;
  default: llvm_unreachable("Unknown register for mttc1 alias!")::llvm::llvm_unreachable_internal("Unknown register for mttc1 alias!"
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 5001);
}
5003}

5005// Map the coprocessor operand the corresponding gpr register operand.
5006static unsigned getRegisterForMxtrC0(MCInst &Inst, bool IsMFTC0) {
switch (Inst.getOperand(IsMFTC0 ? 1 : 0).getReg()) {
  case Mips::COP00:  return Mips::ZERO;
  case Mips::COP01:  return Mips::AT;
  case Mips::COP02:  return Mips::V0;
  case Mips::COP03:  return Mips::V1;
  case Mips::COP04:  return Mips::A0;
  case Mips::COP05:  return Mips::A1;
  case Mips::COP06:  return Mips::A2;
  case Mips::COP07:  return Mips::A3;
  case Mips::COP08:  return Mips::T0;
  case Mips::COP09:  return Mips::T1;
  case Mips::COP010: return Mips::T2;
  case Mips::COP011: return Mips::T3;
  case Mips::COP012: return Mips::T4;
  case Mips::COP013: return Mips::T5;
  case Mips::COP014: return Mips::T6;
  case Mips::COP015: return Mips::T7;
  case Mips::COP016: return Mips::S0;
  case Mips::COP017: return Mips::S1;
  case Mips::COP018: return Mips::S2;
  case Mips::COP019: return Mips::S3;
  case Mips::COP020: return Mips::S4;
  case Mips::COP021: return Mips::S5;
  case Mips::COP022: return Mips::S6;
  case Mips::COP023: return Mips::S7;
  case Mips::COP024: return Mips::T8;
  case Mips::COP025: return Mips::T9;
  case Mips::COP026: return Mips::K0;
  case Mips::COP027: return Mips::K1;
  case Mips::COP028: return Mips::GP;
  case Mips::COP029: return Mips::SP;
  case Mips::COP030: return Mips::FP;
  case Mips::COP031: return Mips::RA;
  default: llvm_unreachable("Unknown register for mttc0 alias!")::llvm::llvm_unreachable_internal("Unknown register for mttc0 alias!"
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 5040);
}
5042}

5044/// Expand an alias of 'mftr' or 'mttr' into the full instruction, by producing
5045/// an mftr or mttr with the correctly mapped gpr register, u, sel and h bits.
5046bool MipsAsmParser::expandMXTRAlias(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
                                  const MCSubtargetInfo *STI) {
MipsTargetStreamer &TOut = getTargetStreamer();
unsigned rd = 0;
unsigned u = 1;
unsigned sel = 0;
unsigned h = 0;
bool IsMFTR = false;
switch (Inst.getOpcode()) {
  case Mips::MFTC0:
    IsMFTR = true;
    LLVM_FALLTHROUGH[[clang::fallthrough]];
  case Mips::MTTC0:
    u = 0;
    rd = getRegisterForMxtrC0(Inst, IsMFTR);
    sel = Inst.getOperand(2).getImm();
    break;
  case Mips::MFTGPR:
    IsMFTR = true;
    LLVM_FALLTHROUGH[[clang::fallthrough]];
  case Mips::MTTGPR:
    rd = Inst.getOperand(IsMFTR ? 1 : 0).getReg();
    break;
  case Mips::MFTLO:
  case Mips::MFTHI:
  case Mips::MFTACX:
  case Mips::MFTDSP:
    IsMFTR = true;
    LLVM_FALLTHROUGH[[clang::fallthrough]];
  case Mips::MTTLO:
  case Mips::MTTHI:
  case Mips::MTTACX:
  case Mips::MTTDSP:
    rd = getRegisterForMxtrDSP(Inst, IsMFTR);
    sel = 1;
    break;
  case Mips::MFTHC1:
    h = 1;
    LLVM_FALLTHROUGH[[clang::fallthrough]];
  case Mips::MFTC1:
    IsMFTR = true;
    rd = getRegisterForMxtrFP(Inst, IsMFTR);
    sel = 2;
    break;
  case Mips::MTTHC1:
    h = 1;
    LLVM_FALLTHROUGH[[clang::fallthrough]];
  case Mips::MTTC1:
    rd = getRegisterForMxtrFP(Inst, IsMFTR);
    sel = 2;
    break;
  case Mips::CFTC1:
    IsMFTR = true;
    LLVM_FALLTHROUGH[[clang::fallthrough]];
  case Mips::CTTC1:
    rd = getRegisterForMxtrFP(Inst, IsMFTR);
    sel = 3;
    break;
}
unsigned Op0 = IsMFTR ? Inst.getOperand(0).getReg() : rd;
unsigned Op1 =
    IsMFTR ? rd
           : (Inst.getOpcode() != Mips::MTTDSP ? Inst.getOperand(1).getReg()
                                               : Inst.getOperand(0).getReg());

TOut.emitRRIII(IsMFTR ? Mips::MFTR : Mips::MTTR, Op0, Op1, u, sel, h, IDLoc,
               STI);
return false;
5114}

5116unsigned
5117MipsAsmParser::checkEarlyTargetMatchPredicate(MCInst &Inst,
                                            const OperandVector &Operands) {
switch (Inst.getOpcode()) {
default:
  return Match_Success;
case Mips::DATI:
case Mips::DAHI:
  if (static_cast<MipsOperand &>(*Operands[1])
          .isValidForTie(static_cast<MipsOperand &>(*Operands[2])))
    return Match_Success;
  return Match_RequiresSameSrcAndDst;
}
5129}

5131unsigned MipsAsmParser::checkTargetMatchPredicate(MCInst &Inst) {
switch (Inst.getOpcode()) {
// As described by the MIPSR6 spec, daui must not use the zero operand for
// its source operand.
case Mips::DAUI:
  if (Inst.getOperand(1).getReg() == Mips::ZERO ||
      Inst.getOperand(1).getReg() == Mips::ZERO_64)
    return Match_RequiresNoZeroRegister;
  return Match_Success;
// As described by the Mips32r2 spec, the registers Rd and Rs for
// jalr.hb must be different.
// It also applies for registers Rt and Rs of microMIPSr6 jalrc.hb instruction
// and registers Rd and Base for microMIPS lwp instruction
case Mips::JALR_HB:
case Mips::JALR_HB64:
case Mips::JALRC_HB_MMR6:
case Mips::JALRC_MMR6:
  if (Inst.getOperand(0).getReg() == Inst.getOperand(1).getReg())
    return Match_RequiresDifferentSrcAndDst;
  return Match_Success;
case Mips::LWP_MM:
case Mips::LWP_MMR6:
  if (Inst.getOperand(0).getReg() == Inst.getOperand(2).getReg())
    return Match_RequiresDifferentSrcAndDst;
  return Match_Success;
case Mips::SYNC:
  if (Inst.getOperand(0).getImm() != 0 && !hasMips32())
    return Match_NonZeroOperandForSync;
  return Match_Success;
case Mips::MFC0:
case Mips::MTC0:
case Mips::MTC2:
case Mips::MFC2:
  if (Inst.getOperand(2).getImm() != 0 && !hasMips32())
    return Match_NonZeroOperandForMTCX;
  return Match_Success;
// As described the MIPSR6 spec, the compact branches that compare registers
// must:
// a) Not use the zero register.
// b) Not use the same register twice.
// c) rs < rt for bnec, beqc.
//    NB: For this case, the encoding will swap the operands as their
//    ordering doesn't matter. GAS performs this transformation  too.
//    Hence, that constraint does not have to be enforced.
//
// The compact branches that branch iff the signed addition of two registers
// would overflow must have rs >= rt. That can be handled like beqc/bnec with
// operand swapping. They do not have restriction of using the zero register.
case Mips::BLEZC:   case Mips::BLEZC_MMR6:
case Mips::BGEZC:   case Mips::BGEZC_MMR6:
case Mips::BGTZC:   case Mips::BGTZC_MMR6:
case Mips::BLTZC:   case Mips::BLTZC_MMR6:
case Mips::BEQZC:   case Mips::BEQZC_MMR6:
case Mips::BNEZC:   case Mips::BNEZC_MMR6:
case Mips::BLEZC64:
case Mips::BGEZC64:
case Mips::BGTZC64:
case Mips::BLTZC64:
case Mips::BEQZC64:
case Mips::BNEZC64:
  if (Inst.getOperand(0).getReg() == Mips::ZERO ||
      Inst.getOperand(0).getReg() == Mips::ZERO_64)
    return Match_RequiresNoZeroRegister;
  return Match_Success;
case Mips::BGEC:    case Mips::BGEC_MMR6:
case Mips::BLTC:    case Mips::BLTC_MMR6:
case Mips::BGEUC:   case Mips::BGEUC_MMR6:
case Mips::BLTUC:   case Mips::BLTUC_MMR6:
case Mips::BEQC:    case Mips::BEQC_MMR6:
case Mips::BNEC:    case Mips::BNEC_MMR6:
case Mips::BGEC64:
case Mips::BLTC64:
case Mips::BGEUC64:
case Mips::BLTUC64:
case Mips::BEQC64:
case Mips::BNEC64:
  if (Inst.getOperand(0).getReg() == Mips::ZERO ||
      Inst.getOperand(0).getReg() == Mips::ZERO_64)
    return Match_RequiresNoZeroRegister;
  if (Inst.getOperand(1).getReg() == Mips::ZERO ||
      Inst.getOperand(1).getReg() == Mips::ZERO_64)
    return Match_RequiresNoZeroRegister;
  if (Inst.getOperand(0).getReg() == Inst.getOperand(1).getReg())
    return Match_RequiresDifferentOperands;
  return Match_Success;
case Mips::DINS: {
  assert(Inst.getOperand(2).isImm() && Inst.getOperand(3).isImm() &&(static_cast <bool> (Inst.getOperand(2).isImm() &&
 Inst.getOperand(3).isImm() && "Operands must be immediates for dins!"
) ? void (0) : __assert_fail ("Inst.getOperand(2).isImm() && Inst.getOperand(3).isImm() && \"Operands must be immediates for dins!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 5218, __extension__ __PRETTY_FUNCTION__))
         "Operands must be immediates for dins!")(static_cast <bool> (Inst.getOperand(2).isImm() &&
 Inst.getOperand(3).isImm() && "Operands must be immediates for dins!"
) ? void (0) : __assert_fail ("Inst.getOperand(2).isImm() && Inst.getOperand(3).isImm() && \"Operands must be immediates for dins!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 5218, __extension__ __PRETTY_FUNCTION__));
  const signed Pos = Inst.getOperand(2).getImm();
  const signed Size = Inst.getOperand(3).getImm();
  if ((0 > (Pos + Size)) || ((Pos + Size) > 32))
    return Match_RequiresPosSizeRange0_32;
  return Match_Success;
}
case Mips::DINSM:
case Mips::DINSU: {
  assert(Inst.getOperand(2).isImm() && Inst.getOperand(3).isImm() &&(static_cast <bool> (Inst.getOperand(2).isImm() &&
 Inst.getOperand(3).isImm() && "Operands must be immediates for dinsm/dinsu!"
) ? void (0) : __assert_fail ("Inst.getOperand(2).isImm() && Inst.getOperand(3).isImm() && \"Operands must be immediates for dinsm/dinsu!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 5228, __extension__ __PRETTY_FUNCTION__))
         "Operands must be immediates for dinsm/dinsu!")(static_cast <bool> (Inst.getOperand(2).isImm() &&
 Inst.getOperand(3).isImm() && "Operands must be immediates for dinsm/dinsu!"
) ? void (0) : __assert_fail ("Inst.getOperand(2).isImm() && Inst.getOperand(3).isImm() && \"Operands must be immediates for dinsm/dinsu!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 5228, __extension__ __PRETTY_FUNCTION__));
  const signed Pos = Inst.getOperand(2).getImm();
  const signed Size = Inst.getOperand(3).getImm();
  if ((32 >= (Pos + Size)) || ((Pos + Size) > 64))
    return Match_RequiresPosSizeRange33_64;
  return Match_Success;
}
case Mips::DEXT: {
  assert(Inst.getOperand(2).isImm() && Inst.getOperand(3).isImm() &&(static_cast <bool> (Inst.getOperand(2).isImm() &&
 Inst.getOperand(3).isImm() && "Operands must be immediates for DEXTM!"
) ? void (0) : __assert_fail ("Inst.getOperand(2).isImm() && Inst.getOperand(3).isImm() && \"Operands must be immediates for DEXTM!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 5237, __extension__ __PRETTY_FUNCTION__))
         "Operands must be immediates for DEXTM!")(static_cast <bool> (Inst.getOperand(2).isImm() &&
 Inst.getOperand(3).isImm() && "Operands must be immediates for DEXTM!"
) ? void (0) : __assert_fail ("Inst.getOperand(2).isImm() && Inst.getOperand(3).isImm() && \"Operands must be immediates for DEXTM!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 5237, __extension__ __PRETTY_FUNCTION__));
  const signed Pos = Inst.getOperand(2).getImm();
  const signed Size = Inst.getOperand(3).getImm();
  if ((1 > (Pos + Size)) || ((Pos + Size) > 63))
    return Match_RequiresPosSizeUImm6;
  return Match_Success;
}
case Mips::DEXTM:
case Mips::DEXTU: {
  assert(Inst.getOperand(2).isImm() && Inst.getOperand(3).isImm() &&(static_cast <bool> (Inst.getOperand(2).isImm() &&
 Inst.getOperand(3).isImm() && "Operands must be immediates for dextm/dextu!"
) ? void (0) : __assert_fail ("Inst.getOperand(2).isImm() && Inst.getOperand(3).isImm() && \"Operands must be immediates for dextm/dextu!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 5247, __extension__ __PRETTY_FUNCTION__))
         "Operands must be immediates for dextm/dextu!")(static_cast <bool> (Inst.getOperand(2).isImm() &&
 Inst.getOperand(3).isImm() && "Operands must be immediates for dextm/dextu!"
) ? void (0) : __assert_fail ("Inst.getOperand(2).isImm() && Inst.getOperand(3).isImm() && \"Operands must be immediates for dextm/dextu!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 5247, __extension__ __PRETTY_FUNCTION__));
  const signed Pos = Inst.getOperand(2).getImm();
  const signed Size = Inst.getOperand(3).getImm();
  if ((32 > (Pos + Size)) || ((Pos + Size) > 64))
    return Match_RequiresPosSizeRange33_64;
  return Match_Success;
}
case Mips::CRC32B: case Mips::CRC32CB:
case Mips::CRC32H: case Mips::CRC32CH:
case Mips::CRC32W: case Mips::CRC32CW:
case Mips::CRC32D: case Mips::CRC32CD:
  if (Inst.getOperand(0).getReg() != Inst.getOperand(2).getReg())
    return Match_RequiresSameSrcAndDst;
  return Match_Success;
}

uint64_t TSFlags = getInstDesc(Inst.getOpcode()).TSFlags;
if ((TSFlags & MipsII::HasFCCRegOperand) &&
    (Inst.getOperand(0).getReg() != Mips::FCC0) && !hasEightFccRegisters())
  return Match_NoFCCRegisterForCurrentISA;

return Match_Success;

5270}

5272static SMLoc RefineErrorLoc(const SMLoc Loc, const OperandVector &Operands,
                          uint64_t ErrorInfo) {
if (ErrorInfo != ~0ULL && ErrorInfo < Operands.size()) {
  SMLoc ErrorLoc = Operands[ErrorInfo]->getStartLoc();
  if (ErrorLoc == SMLoc())
    return Loc;
  return ErrorLoc;
}
return Loc;
5281}

5283bool MipsAsmParser::MatchAndEmitInstruction(SMLoc IDLoc, unsigned &Opcode,
                                          OperandVector &Operands,
                                          MCStreamer &Out,
                                          uint64_t &ErrorInfo,
                                          bool MatchingInlineAsm) {
MCInst Inst;
unsigned MatchResult =
    MatchInstructionImpl(Operands, Inst, ErrorInfo, MatchingInlineAsm);

switch (MatchResult) {
case Match_Success:
  if (processInstruction(Inst, IDLoc, Out, STI))
    return true;
  return false;
case Match_MissingFeature:
  Error(IDLoc, "instruction requires a CPU feature not currently enabled");
  return true;
case Match_InvalidOperand: {
  SMLoc ErrorLoc = IDLoc;
  if (ErrorInfo != ~0ULL) {
    if (ErrorInfo >= Operands.size())
      return Error(IDLoc, "too few operands for instruction");

    ErrorLoc = Operands[ErrorInfo]->getStartLoc();
    if (ErrorLoc == SMLoc())
      ErrorLoc = IDLoc;
  }

  return Error(ErrorLoc, "invalid operand for instruction");
}
case Match_NonZeroOperandForSync:
  return Error(IDLoc, "s-type must be zero or unspecified for pre-MIPS32 ISAs");
case Match_NonZeroOperandForMTCX:
  return Error(IDLoc, "selector must be zero for pre-MIPS32 ISAs");
case Match_MnemonicFail:
  return Error(IDLoc, "invalid instruction");
case Match_RequiresDifferentSrcAndDst:
  return Error(IDLoc, "source and destination must be different");
case Match_RequiresDifferentOperands:
  return Error(IDLoc, "registers must be different");
case Match_RequiresNoZeroRegister:
  return Error(IDLoc, "invalid operand ($zero) for instruction");
case Match_RequiresSameSrcAndDst:
  return Error(IDLoc, "source and destination must match");
case Match_NoFCCRegisterForCurrentISA:
  return Error(RefineErrorLoc(IDLoc, Operands, ErrorInfo),
               "non-zero fcc register doesn't exist in current ISA level");
case Match_Immz:
  return Error(RefineErrorLoc(IDLoc, Operands, ErrorInfo), "expected '0'");
case Match_UImm1_0:
  return Error(RefineErrorLoc(IDLoc, Operands, ErrorInfo),
               "expected 1-bit unsigned immediate");
case Match_UImm2_0:
  return Error(RefineErrorLoc(IDLoc, Operands, ErrorInfo),
               "expected 2-bit unsigned immediate");
case Match_UImm2_1:
  return Error(RefineErrorLoc(IDLoc, Operands, ErrorInfo),
               "expected immediate in range 1 .. 4");
case Match_UImm3_0:
  return Error(RefineErrorLoc(IDLoc, Operands, ErrorInfo),
               "expected 3-bit unsigned immediate");
case Match_UImm4_0:
  return Error(RefineErrorLoc(IDLoc, Operands, ErrorInfo),
               "expected 4-bit unsigned immediate");
case Match_SImm4_0:
  return Error(RefineErrorLoc(IDLoc, Operands, ErrorInfo),
               "expected 4-bit signed immediate");
case Match_UImm5_0:
  return Error(RefineErrorLoc(IDLoc, Operands, ErrorInfo),
               "expected 5-bit unsigned immediate");
case Match_SImm5_0:
  return Error(RefineErrorLoc(IDLoc, Operands, ErrorInfo),
               "expected 5-bit signed immediate");
case Match_UImm5_1:
  return Error(RefineErrorLoc(IDLoc, Operands, ErrorInfo),
               "expected immediate in range 1 .. 32");
case Match_UImm5_32:
  return Error(RefineErrorLoc(IDLoc, Operands, ErrorInfo),
               "expected immediate in range 32 .. 63");
case Match_UImm5_33:
  return Error(RefineErrorLoc(IDLoc, Operands, ErrorInfo),
               "expected immediate in range 33 .. 64");
case Match_UImm5_0_Report_UImm6:
  // This is used on UImm5 operands that have a corresponding UImm5_32
  // operand to avoid confusing the user.
  return Error(RefineErrorLoc(IDLoc, Operands, ErrorInfo),
               "expected 6-bit unsigned immediate");
case Match_UImm5_Lsl2:
  return Error(RefineErrorLoc(IDLoc, Operands, ErrorInfo),
               "expected both 7-bit unsigned immediate and multiple of 4");
case Match_UImmRange2_64:
  return Error(RefineErrorLoc(IDLoc, Operands, ErrorInfo),
               "expected immediate in range 2 .. 64");
case Match_UImm6_0:
  return Error(RefineErrorLoc(IDLoc, Operands, ErrorInfo),
               "expected 6-bit unsigned immediate");
case Match_UImm6_Lsl2:
  return Error(RefineErrorLoc(IDLoc, Operands, ErrorInfo),
               "expected both 8-bit unsigned immediate and multiple of 4");
case Match_SImm6_0:
  return Error(RefineErrorLoc(IDLoc, Operands, ErrorInfo),
               "expected 6-bit signed immediate");
case Match_UImm7_0:
  return Error(RefineErrorLoc(IDLoc, Operands, ErrorInfo),
               "expected 7-bit unsigned immediate");
case Match_UImm7_N1:
  return Error(RefineErrorLoc(IDLoc, Operands, ErrorInfo),
               "expected immediate in range -1 .. 126");
case Match_SImm7_Lsl2:
  return Error(RefineErrorLoc(IDLoc, Operands, ErrorInfo),
               "expected both 9-bit signed immediate and multiple of 4");
case Match_UImm8_0:
  return Error(RefineErrorLoc(IDLoc, Operands, ErrorInfo),
               "expected 8-bit unsigned immediate");
case Match_UImm10_0:
  return Error(RefineErrorLoc(IDLoc, Operands, ErrorInfo),
               "expected 10-bit unsigned immediate");
case Match_SImm10_0:
  return Error(RefineErrorLoc(IDLoc, Operands, ErrorInfo),
               "expected 10-bit signed immediate");
case Match_SImm11_0:
  return Error(RefineErrorLoc(IDLoc, Operands, ErrorInfo),
               "expected 11-bit signed immediate");
case Match_UImm16:
case Match_UImm16_Relaxed:
case Match_UImm16_AltRelaxed:
  return Error(RefineErrorLoc(IDLoc, Operands, ErrorInfo),
               "expected 16-bit unsigned immediate");
case Match_SImm16:
case Match_SImm16_Relaxed:
  return Error(RefineErrorLoc(IDLoc, Operands, ErrorInfo),
               "expected 16-bit signed immediate");
case Match_SImm19_Lsl2:
  return Error(RefineErrorLoc(IDLoc, Operands, ErrorInfo),
               "expected both 19-bit signed immediate and multiple of 4");
case Match_UImm20_0:
  return Error(RefineErrorLoc(IDLoc, Operands, ErrorInfo),
               "expected 20-bit unsigned immediate");
case Match_UImm26_0:
  return Error(RefineErrorLoc(IDLoc, Operands, ErrorInfo),
               "expected 26-bit unsigned immediate");
case Match_SImm32:
case Match_SImm32_Relaxed:
  return Error(RefineErrorLoc(IDLoc, Operands, ErrorInfo),
               "expected 32-bit signed immediate");
case Match_UImm32_Coerced:
  return Error(RefineErrorLoc(IDLoc, Operands, ErrorInfo),
               "expected 32-bit immediate");
case Match_MemSImm9:
  return Error(RefineErrorLoc(IDLoc, Operands, ErrorInfo),
               "expected memory with 9-bit signed offset");
case Match_MemSImm10:
  return Error(RefineErrorLoc(IDLoc, Operands, ErrorInfo),
               "expected memory with 10-bit signed offset");
case Match_MemSImm10Lsl1:
  return Error(RefineErrorLoc(IDLoc, Operands, ErrorInfo),
               "expected memory with 11-bit signed offset and multiple of 2");
case Match_MemSImm10Lsl2:
  return Error(RefineErrorLoc(IDLoc, Operands, ErrorInfo),
               "expected memory with 12-bit signed offset and multiple of 4");
case Match_MemSImm10Lsl3:
  return Error(RefineErrorLoc(IDLoc, Operands, ErrorInfo),
               "expected memory with 13-bit signed offset and multiple of 8");
case Match_MemSImm11:
  return Error(RefineErrorLoc(IDLoc, Operands, ErrorInfo),
               "expected memory with 11-bit signed offset");
case Match_MemSImm12:
  return Error(RefineErrorLoc(IDLoc, Operands, ErrorInfo),
               "expected memory with 12-bit signed offset");
case Match_MemSImm16:
  return Error(RefineErrorLoc(IDLoc, Operands, ErrorInfo),
               "expected memory with 16-bit signed offset");
case Match_RequiresPosSizeRange0_32: {
  SMLoc ErrorStart = Operands[3]->getStartLoc();
  SMLoc ErrorEnd = Operands[4]->getEndLoc();
  return Error(ErrorStart, "size plus position are not in the range 0 .. 32",
               SMRange(ErrorStart, ErrorEnd));
  }
case Match_RequiresPosSizeUImm6: {
  SMLoc ErrorStart = Operands[3]->getStartLoc();
  SMLoc ErrorEnd = Operands[4]->getEndLoc();
  return Error(ErrorStart, "size plus position are not in the range 1 .. 63",
               SMRange(ErrorStart, ErrorEnd));
  }
case Match_RequiresPosSizeRange33_64: {
  SMLoc ErrorStart = Operands[3]->getStartLoc();
  SMLoc ErrorEnd = Operands[4]->getEndLoc();
  return Error(ErrorStart, "size plus position are not in the range 33 .. 64",
               SMRange(ErrorStart, ErrorEnd));
  }
}

llvm_unreachable("Implement any new match types added!")::llvm::llvm_unreachable_internal("Implement any new match types added!"
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 5475);
5476}

5478void MipsAsmParser::warnIfRegIndexIsAT(unsigned RegIndex, SMLoc Loc) {
if (RegIndex != 0 && AssemblerOptions.back()->getATRegIndex() == RegIndex)
  Warning(Loc, "used $at (currently $" + Twine(RegIndex) +
                   ") without \".set noat\"");
5482}

5484void MipsAsmParser::warnIfNoMacro(SMLoc Loc) {
if (!AssemblerOptions.back()->isMacro())
  Warning(Loc, "macro instruction expanded into multiple instructions");
5487}

5489void
5490MipsAsmParser::printWarningWithFixIt(const Twine &Msg, const Twine &FixMsg,
                                   SMRange Range, bool ShowColors) {
getSourceManager().PrintMessage(Range.Start, SourceMgr::DK_Warning, Msg,
                                Range, SMFixIt(Range, FixMsg),
                                ShowColors);
5495}

5497int MipsAsmParser::matchCPURegisterName(StringRef Name) {
int CC;

CC = StringSwitch<unsigned>(Name)
         .Case("zero", 0)
         .Cases("at", "AT", 1)
         .Case("a0", 4)
         .Case("a1", 5)
         .Case("a2", 6)
         .Case("a3", 7)
         .Case("v0", 2)
         .Case("v1", 3)
         .Case("s0", 16)
         .Case("s1", 17)
         .Case("s2", 18)
         .Case("s3", 19)
         .Case("s4", 20)
         .Case("s5", 21)
         .Case("s6", 22)
         .Case("s7", 23)
         .Case("k0", 26)
         .Case("k1", 27)
         .Case("gp", 28)
         .Case("sp", 29)
         .Case("fp", 30)
         .Case("s8", 30)
         .Case("ra", 31)
         .Case("t0", 8)
         .Case("t1", 9)
         .Case("t2", 10)
         .Case("t3", 11)
         .Case("t4", 12)
         .Case("t5", 13)
         .Case("t6", 14)
         .Case("t7", 15)
         .Case("t8", 24)
         .Case("t9", 25)
         .Default(-1);

if (!(isABI_N32() || isABI_N64()))
  return CC;

if (12 <= CC && CC <= 15) {
  // Name is one of t4-t7
  AsmToken RegTok = getLexer().peekTok();
  SMRange RegRange = RegTok.getLocRange();

  StringRef FixedName = StringSwitch<StringRef>(Name)
                            .Case("t4", "t0")
                            .Case("t5", "t1")
                            .Case("t6", "t2")
                            .Case("t7", "t3")
                            .Default("");
  assert(FixedName != "" &&  "Register name is not one of t4-t7.")(static_cast <bool> (FixedName != "" && "Register name is not one of t4-t7."
) ? void (0) : __assert_fail ("FixedName != \"\" && \"Register name is not one of t4-t7.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 5550, __extension__ __PRETTY_FUNCTION__));

  printWarningWithFixIt("register names $t4-$t7 are only available in O32.",
                        "Did you mean $" + FixedName + "?", RegRange);
}

// Although SGI documentation just cuts out t0-t3 for n32/n64,
// GNU pushes the values of t0-t3 to override the o32/o64 values for t4-t7
// We are supporting both cases, so for t0-t3 we'll just push them to t4-t7.
if (8 <= CC && CC <= 11)
  CC += 4;

if (CC == -1)
  CC = StringSwitch<unsigned>(Name)
           .Case("a4", 8)
           .Case("a5", 9)
           .Case("a6", 10)
           .Case("a7", 11)
           .Case("kt0", 26)
           .Case("kt1", 27)
           .Default(-1);

return CC;
5573}

5575int MipsAsmParser::matchHWRegsRegisterName(StringRef Name) {
int CC;

CC = StringSwitch<unsigned>(Name)
          .Case("hwr_cpunum", 0)
          .Case("hwr_synci_step", 1)
          .Case("hwr_cc", 2)
          .Case("hwr_ccres", 3)
          .Case("hwr_ulr", 29)
          .Default(-1);

return CC;
5587}

5589int MipsAsmParser::matchFPURegisterName(StringRef Name) {
if (Name[0] == 'f') {
  StringRef NumString = Name.substr(1);
  unsigned IntVal;
  if (NumString.getAsInteger(10, IntVal))
    return -1;     // This is not an integer.
  if (IntVal > 31) // Maximum index for fpu register.
    return -1;
  return IntVal;
}
return -1;
5600}

5602int MipsAsmParser::matchFCCRegisterName(StringRef Name) {
if (Name.startswith("fcc")) {
  StringRef NumString = Name.substr(3);
  unsigned IntVal;
  if (NumString.getAsInteger(10, IntVal))
    return -1;    // This is not an integer.
  if (IntVal > 7) // There are only 8 fcc registers.
    return -1;
  return IntVal;
}
return -1;
5613}

5615int MipsAsmParser::matchACRegisterName(StringRef Name) {
if (Name.startswith("ac")) {
  StringRef NumString = Name.substr(2);
  unsigned IntVal;
  if (NumString.getAsInteger(10, IntVal))
    return -1;    // This is not an integer.
  if (IntVal > 3) // There are only 3 acc registers.
    return -1;
  return IntVal;
}
return -1;
5626}

5628int MipsAsmParser::matchMSA128RegisterName(StringRef Name) {
unsigned IntVal;

if (Name.front() != 'w' || Name.drop_front(1).getAsInteger(10, IntVal))
  return -1;

if (IntVal > 31)
  return -1;

return IntVal;
5638}

5640int MipsAsmParser::matchMSA128CtrlRegisterName(StringRef Name) {
int CC;

CC = StringSwitch<unsigned>(Name)
         .Case("msair", 0)
         .Case("msacsr", 1)
         .Case("msaaccess", 2)
         .Case("msasave", 3)
         .Case("msamodify", 4)
         .Case("msarequest", 5)
         .Case("msamap", 6)
         .Case("msaunmap", 7)
         .Default(-1);

return CC;
5655}

5657bool MipsAsmParser::canUseATReg() {
return AssemblerOptions.back()->getATRegIndex() != 0;
5659}

5661unsigned MipsAsmParser::getATReg(SMLoc Loc) {
unsigned ATIndex = AssemblerOptions.back()->getATRegIndex();
if (ATIndex == 0) {
  reportParseError(Loc,
                   "pseudo-instruction requires $at, which is not available");
  return 0;
}
unsigned AT = getReg(
    (isGP64bit()) ? Mips::GPR64RegClassID : Mips::GPR32RegClassID, ATIndex);
return AT;
5671}

5673unsigned MipsAsmParser::getReg(int RC, int RegNo) {
return *(getContext().getRegisterInfo()->getRegClass(RC).begin() + RegNo);
5675}

5677bool MipsAsmParser::parseOperand(OperandVector &Operands, StringRef Mnemonic) {
MCAsmParser &Parser = getParser();
DEBUG(dbgs() << "parseOperand\n")do { if (::llvm::DebugFlag && ::llvm::isCurrentDebugType
("mips-asm-parser")) { dbgs() << "parseOperand\n"; } } while
 (false);

// Check if the current operand has a custom associated parser, if so, try to
// custom parse the operand, or fallback to the general approach.
OperandMatchResultTy ResTy = MatchOperandParserImpl(Operands, Mnemonic);
if (ResTy == MatchOperand_Success)
  return false;
// If there wasn't a custom match, try the generic matcher below. Otherwise,
// there was a match, but an error occurred, in which case, just return that
// the operand parsing failed.
if (ResTy == MatchOperand_ParseFail)
  return true;

DEBUG(dbgs() << ".. Generic Parser\n")do { if (::llvm::DebugFlag && ::llvm::isCurrentDebugType
("mips-asm-parser")) { dbgs() << ".. Generic Parser\n";
 } } while (false);

switch (getLexer().getKind()) {
case AsmToken::Dollar: {
  // Parse the register.
  SMLoc S = Parser.getTok().getLoc();

  // Almost all registers have been parsed by custom parsers. There is only
  // one exception to this. $zero (and it's alias $0) will reach this point
  // for div, divu, and similar instructions because it is not an operand
  // to the instruction definition but an explicit register. Special case
  // this situation for now.
  if (parseAnyRegister(Operands) != MatchOperand_NoMatch)
    return false;

  // Maybe it is a symbol reference.
  StringRef Identifier;
  if (Parser.parseIdentifier(Identifier))
    return true;

  SMLoc E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
  MCSymbol *Sym = getContext().getOrCreateSymbol("$" + Identifier);
  // Otherwise create a symbol reference.
  const MCExpr *Res =
      MCSymbolRefExpr::create(Sym, MCSymbolRefExpr::VK_None, getContext());

  Operands.push_back(MipsOperand::CreateImm(Res, S, E, *this));
  return false;
}
default: {
  DEBUG(dbgs() << ".. generic integer expression\n")do { if (::llvm::DebugFlag && ::llvm::isCurrentDebugType
("mips-asm-parser")) { dbgs() << ".. generic integer expression\n"
; } } while (false);

  const MCExpr *Expr;
  SMLoc S = Parser.getTok().getLoc(); // Start location of the operand.
  if (getParser().parseExpression(Expr))
    return true;

  SMLoc E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);

  Operands.push_back(MipsOperand::CreateImm(Expr, S, E, *this));
  return false;
}
} // switch(getLexer().getKind())
return true;
5736}

5738bool MipsAsmParser::isEvaluated(const MCExpr *Expr) {
switch (Expr->getKind()) {
case MCExpr::Constant:
  return true;
case MCExpr::SymbolRef:
  return (cast<MCSymbolRefExpr>(Expr)->getKind() != MCSymbolRefExpr::VK_None);
case MCExpr::Binary: {
  const MCBinaryExpr *BE = cast<MCBinaryExpr>(Expr);
  if (!isEvaluated(BE->getLHS()))
    return false;
  return isEvaluated(BE->getRHS());
}
case MCExpr::Unary:
  return isEvaluated(cast<MCUnaryExpr>(Expr)->getSubExpr());
case MCExpr::Target:
  return true;
}
return false;
5756}

5758bool MipsAsmParser::ParseRegister(unsigned &RegNo, SMLoc &StartLoc,
                                SMLoc &EndLoc) {
SmallVector<std::unique_ptr<MCParsedAsmOperand>, 1> Operands;
OperandMatchResultTy ResTy = parseAnyRegister(Operands);
if (ResTy == MatchOperand_Success) {
  assert(Operands.size() == 1)(static_cast <bool> (Operands.size() == 1) ? void (0) :
 __assert_fail ("Operands.size() == 1", "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 5763, __extension__ __PRETTY_FUNCTION__));
  MipsOperand &Operand = static_cast<MipsOperand &>(*Operands.front());
  StartLoc = Operand.getStartLoc();
  EndLoc = Operand.getEndLoc();

  // AFAIK, we only support numeric registers and named GPR's in CFI
  // directives.
  // Don't worry about eating tokens before failing. Using an unrecognised
  // register is a parse error.
  if (Operand.isGPRAsmReg()) {
    // Resolve to GPR32 or GPR64 appropriately.
    RegNo = isGP64bit() ? Operand.getGPR64Reg() : Operand.getGPR32Reg();
  }

  return (RegNo == (unsigned)-1);
}

assert(Operands.size() == 0)(static_cast <bool> (Operands.size() == 0) ? void (0) :
 __assert_fail ("Operands.size() == 0", "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 5780, __extension__ __PRETTY_FUNCTION__));
return (RegNo == (unsigned)-1);
5782}

5784bool MipsAsmParser::parseMemOffset(const MCExpr *&Res, bool isParenExpr) {
SMLoc S;

if (isParenExpr)
  return getParser().parseParenExprOfDepth(0, Res, S);
return getParser().parseExpression(Res);
5790}

5792OperandMatchResultTy
5793MipsAsmParser::parseMemOperand(OperandVector &Operands) {
MCAsmParser &Parser = getParser();
DEBUG(dbgs() << "parseMemOperand\n")do { if (::llvm::DebugFlag && ::llvm::isCurrentDebugType
("mips-asm-parser")) { dbgs() << "parseMemOperand\n"; }
 } while (false);
const MCExpr *IdVal = nullptr;
SMLoc S;
bool isParenExpr = false;
OperandMatchResultTy Res = MatchOperand_NoMatch;
// First operand is the offset.
S = Parser.getTok().getLoc();

if (getLexer().getKind() == AsmToken::LParen) {
  Parser.Lex();
  isParenExpr = true;
}

if (getLexer().getKind() != AsmToken::Dollar) {
  if (parseMemOffset(IdVal, isParenExpr))
    return MatchOperand_ParseFail;

  const AsmToken &Tok = Parser.getTok(); // Get the next token.
  if (Tok.isNot(AsmToken::LParen)) {
    MipsOperand &Mnemonic = static_cast<MipsOperand &>(*Operands[0]);
    if (Mnemonic.getToken() == "la" || Mnemonic.getToken() == "dla") {
      SMLoc E =
          SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
      Operands.push_back(MipsOperand::CreateImm(IdVal, S, E, *this));
      return MatchOperand_Success;
    }
    if (Tok.is(AsmToken::EndOfStatement)) {
      SMLoc E =
          SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);

      // Zero register assumed, add a memory operand with ZERO as its base.
      // "Base" will be managed by k_Memory.
      auto Base = MipsOperand::createGPRReg(
          0, "0", getContext().getRegisterInfo(), S, E, *this);
      Operands.push_back(
          MipsOperand::CreateMem(std::move(Base), IdVal, S, E, *this));
      return MatchOperand_Success;
    }
    MCBinaryExpr::Opcode Opcode;
    // GAS and LLVM treat comparison operators different. GAS will generate -1
    // or 0, while LLVM will generate 0 or 1. Since a comparsion operator is
    // highly unlikely to be found in a memory offset expression, we don't
    // handle them.
    switch (Tok.getKind()) {
    case AsmToken::Plus:
      Opcode = MCBinaryExpr::Add;
      Parser.Lex();
      break;
    case AsmToken::Minus:
      Opcode = MCBinaryExpr::Sub;
      Parser.Lex();
      break;
    case AsmToken::Star:
      Opcode = MCBinaryExpr::Mul;
      Parser.Lex();
      break;
    case AsmToken::Pipe:
      Opcode = MCBinaryExpr::Or;
      Parser.Lex();
      break;
    case AsmToken::Amp:
      Opcode = MCBinaryExpr::And;
      Parser.Lex();
      break;
    case AsmToken::LessLess:
      Opcode = MCBinaryExpr::Shl;
      Parser.Lex();
      break;
    case AsmToken::GreaterGreater:
      Opcode = MCBinaryExpr::LShr;
      Parser.Lex();
      break;
    case AsmToken::Caret:
      Opcode = MCBinaryExpr::Xor;
      Parser.Lex();
      break;
    case AsmToken::Slash:
      Opcode = MCBinaryExpr::Div;
      Parser.Lex();
      break;
    case AsmToken::Percent:
      Opcode = MCBinaryExpr::Mod;
      Parser.Lex();
      break;
    default:
      Error(Parser.getTok().getLoc(), "'(' or expression expected");
      return MatchOperand_ParseFail;
    }
    const MCExpr * NextExpr;
    if (getParser().parseExpression(NextExpr))
      return MatchOperand_ParseFail;
    IdVal = MCBinaryExpr::create(Opcode, IdVal, NextExpr, getContext());
  }

  Parser.Lex(); // Eat the '(' token.
}

Res = parseAnyRegister(Operands);
if (Res != MatchOperand_Success)
  return Res;

if (Parser.getTok().isNot(AsmToken::RParen)) {
  Error(Parser.getTok().getLoc(), "')' expected");
  return MatchOperand_ParseFail;
}

SMLoc E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);

Parser.Lex(); // Eat the ')' token.

if (!IdVal)
  IdVal = MCConstantExpr::create(0, getContext());

// Replace the register operand with the memory operand.
std::unique_ptr<MipsOperand> op(
    static_cast<MipsOperand *>(Operands.back().release()));
// Remove the register from the operands.
// "op" will be managed by k_Memory.
Operands.pop_back();
// Add the memory operand.
if (const MCBinaryExpr *BE = dyn_cast<MCBinaryExpr>(IdVal)) {
  int64_t Imm;
  if (IdVal->evaluateAsAbsolute(Imm))
    IdVal = MCConstantExpr::create(Imm, getContext());
  else if (BE->getLHS()->getKind() != MCExpr::SymbolRef)
    IdVal = MCBinaryExpr::create(BE->getOpcode(), BE->getRHS(), BE->getLHS(),
                                 getContext());
}

Operands.push_back(MipsOperand::CreateMem(std::move(op), IdVal, S, E, *this));
return MatchOperand_Success;
5926}

5928bool MipsAsmParser::searchSymbolAlias(OperandVector &Operands) {
MCAsmParser &Parser = getParser();
MCSymbol *Sym = getContext().lookupSymbol(Parser.getTok().getIdentifier());
if (Sym) {
  SMLoc S = Parser.getTok().getLoc();
  const MCExpr *Expr;
  if (Sym->isVariable())
    Expr = Sym->getVariableValue();
  else
    return false;
  if (Expr->getKind() == MCExpr::SymbolRef) {
    const MCSymbolRefExpr *Ref = static_cast<const MCSymbolRefExpr *>(Expr);
    StringRef DefSymbol = Ref->getSymbol().getName();
    if (DefSymbol.startswith("$")) {
      OperandMatchResultTy ResTy =
          matchAnyRegisterNameWithoutDollar(Operands, DefSymbol.substr(1), S);
      if (ResTy == MatchOperand_Success) {
        Parser.Lex();
        return true;
      } else if (ResTy == MatchOperand_ParseFail)
        llvm_unreachable("Should never ParseFail")::llvm::llvm_unreachable_internal("Should never ParseFail", "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 5948);
      return false;
    }
  }
}
return false;
5954}

5956OperandMatchResultTy
5957MipsAsmParser::matchAnyRegisterNameWithoutDollar(OperandVector &Operands,
                                               StringRef Identifier,
                                               SMLoc S) {
int Index = matchCPURegisterName(Identifier);
if (Index != -1) {
  Operands.push_back(MipsOperand::createGPRReg(
      Index, Identifier, getContext().getRegisterInfo(), S,
      getLexer().getLoc(), *this));
  return MatchOperand_Success;
}

Index = matchHWRegsRegisterName(Identifier);
if (Index != -1) {
  Operands.push_back(MipsOperand::createHWRegsReg(
      Index, Identifier, getContext().getRegisterInfo(), S,
      getLexer().getLoc(), *this));
  return MatchOperand_Success;
}

Index = matchFPURegisterName(Identifier);
if (Index != -1) {
  Operands.push_back(MipsOperand::createFGRReg(
      Index, Identifier, getContext().getRegisterInfo(), S,
      getLexer().getLoc(), *this));
  return MatchOperand_Success;
}

Index = matchFCCRegisterName(Identifier);
if (Index != -1) {
  Operands.push_back(MipsOperand::createFCCReg(
      Index, Identifier, getContext().getRegisterInfo(), S,
      getLexer().getLoc(), *this));
  return MatchOperand_Success;
}

Index = matchACRegisterName(Identifier);
if (Index != -1) {
  Operands.push_back(MipsOperand::createACCReg(
      Index, Identifier, getContext().getRegisterInfo(), S,
      getLexer().getLoc(), *this));
  return MatchOperand_Success;
}

Index = matchMSA128RegisterName(Identifier);
if (Index != -1) {
  Operands.push_back(MipsOperand::createMSA128Reg(
      Index, Identifier, getContext().getRegisterInfo(), S,
      getLexer().getLoc(), *this));
  return MatchOperand_Success;
}

Index = matchMSA128CtrlRegisterName(Identifier);
if (Index != -1) {
  Operands.push_back(MipsOperand::createMSACtrlReg(
      Index, Identifier, getContext().getRegisterInfo(), S,
      getLexer().getLoc(), *this));
  return MatchOperand_Success;
}

return MatchOperand_NoMatch;
6017}

6019OperandMatchResultTy
6020MipsAsmParser::matchAnyRegisterWithoutDollar(OperandVector &Operands, SMLoc S) {
MCAsmParser &Parser = getParser();
auto Token = Parser.getLexer().peekTok(false);

if (Token.is(AsmToken::Identifier)) {
  DEBUG(dbgs() << ".. identifier\n")do { if (::llvm::DebugFlag && ::llvm::isCurrentDebugType
("mips-asm-parser")) { dbgs() << ".. identifier\n"; } }
 while (false);
  StringRef Identifier = Token.getIdentifier();
  OperandMatchResultTy ResTy =
      matchAnyRegisterNameWithoutDollar(Operands, Identifier, S);
  return ResTy;
} else if (Token.is(AsmToken::Integer)) {
  DEBUG(dbgs() << ".. integer\n")do { if (::llvm::DebugFlag && ::llvm::isCurrentDebugType
("mips-asm-parser")) { dbgs() << ".. integer\n"; } } while
 (false);
  Operands.push_back(MipsOperand::createNumericReg(
      Token.getIntVal(), Token.getString(), getContext().getRegisterInfo(), S,
      Token.getLoc(), *this));
  return MatchOperand_Success;
}

DEBUG(dbgs() << Parser.getTok().getKind() << "\n")do { if (::llvm::DebugFlag && ::llvm::isCurrentDebugType
("mips-asm-parser")) { dbgs() << Parser.getTok().getKind
() << "\n"; } } while (false);

return MatchOperand_NoMatch;
6041}

6043OperandMatchResultTy
6044MipsAsmParser::parseAnyRegister(OperandVector &Operands) {
MCAsmParser &Parser = getParser();
DEBUG(dbgs() << "parseAnyRegister\n")do { if (::llvm::DebugFlag && ::llvm::isCurrentDebugType
("mips-asm-parser")) { dbgs() << "parseAnyRegister\n"; }
 } while (false);

auto Token = Parser.getTok();

SMLoc S = Token.getLoc();

if (Token.isNot(AsmToken::Dollar)) {
  DEBUG(dbgs() << ".. !$ -> try sym aliasing\n")do { if (::llvm::DebugFlag && ::llvm::isCurrentDebugType
("mips-asm-parser")) { dbgs() << ".. !$ -> try sym aliasing\n"
; } } while (false);
  if (Token.is(AsmToken::Identifier)) {
    if (searchSymbolAlias(Operands))
      return MatchOperand_Success;
  }
  DEBUG(dbgs() << ".. !symalias -> NoMatch\n")do { if (::llvm::DebugFlag && ::llvm::isCurrentDebugType
("mips-asm-parser")) { dbgs() << ".. !symalias -> NoMatch\n"
; } } while (false);
  return MatchOperand_NoMatch;
}
DEBUG(dbgs() << ".. $\n")do { if (::llvm::DebugFlag && ::llvm::isCurrentDebugType
("mips-asm-parser")) { dbgs() << ".. $\n"; } } while (false
);

OperandMatchResultTy ResTy = matchAnyRegisterWithoutDollar(Operands, S);
if (ResTy == MatchOperand_Success) {
  Parser.Lex(); // $
  Parser.Lex(); // identifier
}
return ResTy;
6069}

6071OperandMatchResultTy
6072MipsAsmParser::parseJumpTarget(OperandVector &Operands) {
MCAsmParser &Parser = getParser();
DEBUG(dbgs() << "parseJumpTarget\n")do { if (::llvm::DebugFlag && ::llvm::isCurrentDebugType
("mips-asm-parser")) { dbgs() << "parseJumpTarget\n"; }
 } while (false);

SMLoc S = getLexer().getLoc();

// Registers are a valid target and have priority over symbols.
OperandMatchResultTy ResTy = parseAnyRegister(Operands);
if (ResTy != MatchOperand_NoMatch)
  return ResTy;

// Integers and expressions are acceptable
const MCExpr *Expr = nullptr;
if (Parser.parseExpression(Expr)) {
  // We have no way of knowing if a symbol was consumed so we must ParseFail
  return MatchOperand_ParseFail;
}
Operands.push_back(
    MipsOperand::CreateImm(Expr, S, getLexer().getLoc(), *this));
return MatchOperand_Success;
6092}

6094OperandMatchResultTy
6095MipsAsmParser::parseInvNum(OperandVector &Operands) {
MCAsmParser &Parser = getParser();
const MCExpr *IdVal;
// If the first token is '$' we may have register operand. We have to reject
// cases where it is not a register. Complicating the matter is that
// register names are not reserved across all ABIs.
// Peek past the dollar to see if it's a register name for this ABI.
SMLoc S = Parser.getTok().getLoc();
if (Parser.getTok().is(AsmToken::Dollar)) {
  return matchCPURegisterName(Parser.getLexer().peekTok().getString()) == -1
             ? MatchOperand_ParseFail
             : MatchOperand_NoMatch;
}
if (getParser().parseExpression(IdVal))
  return MatchOperand_ParseFail;
const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(IdVal);
if (!MCE)
  return MatchOperand_NoMatch;
int64_t Val = MCE->getValue();
SMLoc E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
Operands.push_back(MipsOperand::CreateImm(
    MCConstantExpr::create(0 - Val, getContext()), S, E, *this));
return MatchOperand_Success;
6118}

6120OperandMatchResultTy
6121MipsAsmParser::parseRegisterList(OperandVector &Operands) {
MCAsmParser &Parser = getParser();
SmallVector<unsigned, 10> Regs;
unsigned RegNo;
unsigned PrevReg = Mips::NoRegister;
bool RegRange = false;
SmallVector<std::unique_ptr<MCParsedAsmOperand>, 8> TmpOperands;

if (Parser.getTok().isNot(AsmToken::Dollar))
  return MatchOperand_ParseFail;

SMLoc S = Parser.getTok().getLoc();
while (parseAnyRegister(TmpOperands) == MatchOperand_Success) {
  SMLoc E = getLexer().getLoc();
  MipsOperand &Reg = static_cast<MipsOperand &>(*TmpOperands.back());
  RegNo = isGP64bit() ? Reg.getGPR64Reg() : Reg.getGPR32Reg();
  if (RegRange) {
    // Remove last register operand because registers from register range
    // should be inserted first.
    if ((isGP64bit() && RegNo == Mips::RA_64) ||
        (!isGP64bit() && RegNo == Mips::RA)) {
      Regs.push_back(RegNo);
    } else {
      unsigned TmpReg = PrevReg + 1;
      while (TmpReg <= RegNo) {
        if ((((TmpReg < Mips::S0) || (TmpReg > Mips::S7)) && !isGP64bit()) ||
            (((TmpReg < Mips::S0_64) || (TmpReg > Mips::S7_64)) &&
             isGP64bit())) {
          Error(E, "invalid register operand");
          return MatchOperand_ParseFail;
        }

        PrevReg = TmpReg;
        Regs.push_back(TmpReg++);
      }
    }

    RegRange = false;
  } else {
    if ((PrevReg == Mips::NoRegister) &&
        ((isGP64bit() && (RegNo != Mips::S0_64) && (RegNo != Mips::RA_64)) ||
        (!isGP64bit() && (RegNo != Mips::S0) && (RegNo != Mips::RA)))) {
      Error(E, "$16 or $31 expected");
      return MatchOperand_ParseFail;
    } else if (!(((RegNo == Mips::FP || RegNo == Mips::RA ||
                  (RegNo >= Mips::S0 && RegNo <= Mips::S7)) &&
                  !isGP64bit()) ||
                 ((RegNo == Mips::FP_64 || RegNo == Mips::RA_64 ||
                  (RegNo >= Mips::S0_64 && RegNo <= Mips::S7_64)) &&
                  isGP64bit()))) {
      Error(E, "invalid register operand");
      return MatchOperand_ParseFail;
    } else if ((PrevReg != Mips::NoRegister) && (RegNo != PrevReg + 1) &&
               ((RegNo != Mips::FP && RegNo != Mips::RA && !isGP64bit()) ||
                (RegNo != Mips::FP_64 && RegNo != Mips::RA_64 &&
                 isGP64bit()))) {
      Error(E, "consecutive register numbers expected");
      return MatchOperand_ParseFail;
    }

    Regs.push_back(RegNo);
  }

  if (Parser.getTok().is(AsmToken::Minus))
    RegRange = true;

  if (!Parser.getTok().isNot(AsmToken::Minus) &&
      !Parser.getTok().isNot(AsmToken::Comma)) {
    Error(E, "',' or '-' expected");
    return MatchOperand_ParseFail;
  }

  Lex(); // Consume comma or minus
  if (Parser.getTok().isNot(AsmToken::Dollar))
    break;

  PrevReg = RegNo;
}

SMLoc E = Parser.getTok().getLoc();
Operands.push_back(MipsOperand::CreateRegList(Regs, S, E, *this));
parseMemOperand(Operands);
return MatchOperand_Success;
6204}

6206OperandMatchResultTy
6207MipsAsmParser::parseRegisterPair(OperandVector &Operands) {
MCAsmParser &Parser = getParser();

SMLoc S = Parser.getTok().getLoc();
if (parseAnyRegister(Operands) != MatchOperand_Success)
  return MatchOperand_ParseFail;

SMLoc E = Parser.getTok().getLoc();
MipsOperand Op = static_cast<MipsOperand &>(*Operands.back());

Operands.pop_back();
Operands.push_back(MipsOperand::CreateRegPair(Op, S, E, *this));
return MatchOperand_Success;
6220}

6222OperandMatchResultTy
6223MipsAsmParser::parseMovePRegPair(OperandVector &Operands) {
MCAsmParser &Parser = getParser();
SmallVector<std::unique_ptr<MCParsedAsmOperand>, 8> TmpOperands;
SmallVector<unsigned, 10> Regs;

if (Parser.getTok().isNot(AsmToken::Dollar))
  return MatchOperand_ParseFail;

SMLoc S = Parser.getTok().getLoc();

if (parseAnyRegister(TmpOperands) != MatchOperand_Success)
  return MatchOperand_ParseFail;

MipsOperand *Reg = &static_cast<MipsOperand &>(*TmpOperands.back());
unsigned RegNo = isGP64bit() ? Reg->getGPR64Reg() : Reg->getGPR32Reg();
Regs.push_back(RegNo);

SMLoc E = Parser.getTok().getLoc();
if (Parser.getTok().isNot(AsmToken::Comma)) {
  Error(E, "',' expected");
  return MatchOperand_ParseFail;
}

// Remove comma.
Parser.Lex();

if (parseAnyRegister(TmpOperands) != MatchOperand_Success)
  return MatchOperand_ParseFail;

Reg = &static_cast<MipsOperand &>(*TmpOperands.back());
RegNo = isGP64bit() ? Reg->getGPR64Reg() : Reg->getGPR32Reg();
Regs.push_back(RegNo);

Operands.push_back(MipsOperand::CreateRegList(Regs, S, E, *this));

return MatchOperand_Success;
6259}

6261/// Sometimes (i.e. load/stores) the operand may be followed immediately by
6262/// either this.
6263/// ::= '(', register, ')'
6264/// handle it before we iterate so we don't get tripped up by the lack of
6265/// a comma.
6266bool MipsAsmParser::parseParenSuffix(StringRef Name, OperandVector &Operands) {
MCAsmParser &Parser = getParser();
if (getLexer().is(AsmToken::LParen)) {
  Operands.push_back(
      MipsOperand::CreateToken("(", getLexer().getLoc(), *this));
  Parser.Lex();
  if (parseOperand(Operands, Name)) {
    SMLoc Loc = getLexer().getLoc();
    return Error(Loc, "unexpected token in argument list");
  }
  if (Parser.getTok().isNot(AsmToken::RParen)) {
    SMLoc Loc = getLexer().getLoc();
    return Error(Loc, "unexpected token, expected ')'");
  }
  Operands.push_back(
      MipsOperand::CreateToken(")", getLexer().getLoc(), *this));
  Parser.Lex();
}
return false;
6285}

6287/// Sometimes (i.e. in MSA) the operand may be followed immediately by
6288/// either one of these.
6289/// ::= '[', register, ']'
6290/// ::= '[', integer, ']'
6291/// handle it before we iterate so we don't get tripped up by the lack of
6292/// a comma.
6293bool MipsAsmParser::parseBracketSuffix(StringRef Name,
                                     OperandVector &Operands) {
MCAsmParser &Parser = getParser();
if (getLexer().is(AsmToken::LBrac)) {
  Operands.push_back(
      MipsOperand::CreateToken("[", getLexer().getLoc(), *this));
  Parser.Lex();
  if (parseOperand(Operands, Name)) {
    SMLoc Loc = getLexer().getLoc();
    return Error(Loc, "unexpected token in argument list");
  }
  if (Parser.getTok().isNot(AsmToken::RBrac)) {
    SMLoc Loc = getLexer().getLoc();
    return Error(Loc, "unexpected token, expected ']'");
  }
  Operands.push_back(
      MipsOperand::CreateToken("]", getLexer().getLoc(), *this));
  Parser.Lex();
}
return false;
6313}

6315bool MipsAsmParser::ParseInstruction(ParseInstructionInfo &Info, StringRef Name,
                                   SMLoc NameLoc, OperandVector &Operands) {
MCAsmParser &Parser = getParser();
DEBUG(dbgs() << "ParseInstruction\n")do { if (::llvm::DebugFlag && ::llvm::isCurrentDebugType
("mips-asm-parser")) { dbgs() << "ParseInstruction\n"; }
 } while (false);

// We have reached first instruction, module directive are now forbidden.
getTargetStreamer().forbidModuleDirective();

// Check if we have valid mnemonic
if (!mnemonicIsValid(Name, 0)) {
  return Error(NameLoc, "unknown instruction");
}
// First operand in MCInst is instruction mnemonic.
Operands.push_back(MipsOperand::CreateToken(Name, NameLoc, *this));

// Read the remaining operands.
if (getLexer().isNot(AsmToken::EndOfStatement)) {
  // Read the first operand.
  if (parseOperand(Operands, Name)) {
    SMLoc Loc = getLexer().getLoc();
    return Error(Loc, "unexpected token in argument list");
  }
  if (getLexer().is(AsmToken::LBrac) && parseBracketSuffix(Name, Operands))
    return true;
  // AFAIK, parenthesis suffixes are never on the first operand

  while (getLexer().is(AsmToken::Comma)) {
    Parser.Lex(); // Eat the comma.
    // Parse and remember the operand.
    if (parseOperand(Operands, Name)) {
      SMLoc Loc = getLexer().getLoc();
      return Error(Loc, "unexpected token in argument list");
    }
    // Parse bracket and parenthesis suffixes before we iterate
    if (getLexer().is(AsmToken::LBrac)) {
      if (parseBracketSuffix(Name, Operands))
        return true;
    } else if (getLexer().is(AsmToken::LParen) &&
               parseParenSuffix(Name, Operands))
      return true;
  }
}
if (getLexer().isNot(AsmToken::EndOfStatement)) {
  SMLoc Loc = getLexer().getLoc();
  return Error(Loc, "unexpected token in argument list");
}
Parser.Lex(); // Consume the EndOfStatement.
return false;
6363}

6365// FIXME: Given that these have the same name, these should both be
6366// consistent on affecting the Parser.
6367bool MipsAsmParser::reportParseError(Twine ErrorMsg) {
SMLoc Loc = getLexer().getLoc();
return Error(Loc, ErrorMsg);
6370}

6372bool MipsAsmParser::reportParseError(SMLoc Loc, Twine ErrorMsg) {
return Error(Loc, ErrorMsg);
6374}

6376bool MipsAsmParser::parseSetNoAtDirective() {
MCAsmParser &Parser = getParser();
// Line should look like: ".set noat".

// Set the $at register to $0.
AssemblerOptions.back()->setATRegIndex(0);

Parser.Lex(); // Eat "noat".

// If this is not the end of the statement, report an error.
if (getLexer().isNot(AsmToken::EndOfStatement)) {
  reportParseError("unexpected token, expected end of statement");
  return false;
}

getTargetStreamer().emitDirectiveSetNoAt();
Parser.Lex(); // Consume the EndOfStatement.
return false;
6394}

6396bool MipsAsmParser::parseSetAtDirective() {
// Line can be: ".set at", which sets $at to $1
//          or  ".set at=$reg", which sets $at to $reg.
MCAsmParser &Parser = getParser();
Parser.Lex(); // Eat "at".

if (getLexer().is(AsmToken::EndOfStatement)) {
  // No register was specified, so we set $at to $1.
  AssemblerOptions.back()->setATRegIndex(1);

  getTargetStreamer().emitDirectiveSetAt();
  Parser.Lex(); // Consume the EndOfStatement.
  return false;
}

if (getLexer().isNot(AsmToken::Equal)) {
  reportParseError("unexpected token, expected equals sign");
  return false;
}
Parser.Lex(); // Eat "=".

if (getLexer().isNot(AsmToken::Dollar)) {
  if (getLexer().is(AsmToken::EndOfStatement)) {
    reportParseError("no register specified");
    return false;
  } else {
    reportParseError("unexpected token, expected dollar sign '$'");
    return false;
  }
}
Parser.Lex(); // Eat "$".

// Find out what "reg" is.
unsigned AtRegNo;
const AsmToken &Reg = Parser.getTok();
if (Reg.is(AsmToken::Identifier)) {
  AtRegNo = matchCPURegisterName(Reg.getIdentifier());
} else if (Reg.is(AsmToken::Integer)) {
  AtRegNo = Reg.getIntVal();
} else {
  reportParseError("unexpected token, expected identifier or integer");
  return false;
}

// Check if $reg is a valid register. If it is, set $at to $reg.
if (!AssemblerOptions.back()->setATRegIndex(AtRegNo)) {
  reportParseError("invalid register");
  return false;
}
Parser.Lex(); // Eat "reg".

// If this is not the end of the statement, report an error.
if (getLexer().isNot(AsmToken::EndOfStatement)) {
  reportParseError("unexpected token, expected end of statement");
  return false;
}

getTargetStreamer().emitDirectiveSetAtWithArg(AtRegNo);

Parser.Lex(); // Consume the EndOfStatement.
return false;
6457}

6459bool MipsAsmParser::parseSetReorderDirective() {
MCAsmParser &Parser = getParser();
Parser.Lex();
// If this is not the end of the statement, report an error.
if (getLexer().isNot(AsmToken::EndOfStatement)) {
  reportParseError("unexpected token, expected end of statement");
  return false;
}
AssemblerOptions.back()->setReorder();
getTargetStreamer().emitDirectiveSetReorder();
Parser.Lex(); // Consume the EndOfStatement.
return false;
6471}

6473bool MipsAsmParser::parseSetNoReorderDirective() {
MCAsmParser &Parser = getParser();
Parser.Lex();
// If this is not the end of the statement, report an error.
if (getLexer().isNot(AsmToken::EndOfStatement)) {
  reportParseError("unexpected token, expected end of statement");
  return false;
}
AssemblerOptions.back()->setNoReorder();
getTargetStreamer().emitDirectiveSetNoReorder();
Parser.Lex(); // Consume the EndOfStatement.
return false;
6485}

6487bool MipsAsmParser::parseSetMacroDirective() {
MCAsmParser &Parser = getParser();
Parser.Lex();
// If this is not the end of the statement, report an error.
if (getLexer().isNot(AsmToken::EndOfStatement)) {
  reportParseError("unexpected token, expected end of statement");
  return false;
}
AssemblerOptions.back()->setMacro();
getTargetStreamer().emitDirectiveSetMacro();
Parser.Lex(); // Consume the EndOfStatement.
return false;
6499}

6501bool MipsAsmParser::parseSetNoMacroDirective() {
MCAsmParser &Parser = getParser();
Parser.Lex();
// If this is not the end of the statement, report an error.
if (getLexer().isNot(AsmToken::EndOfStatement)) {
  reportParseError("unexpected token, expected end of statement");
  return false;
}
if (AssemblerOptions.back()->isReorder()) {
  reportParseError("`noreorder' must be set before `nomacro'");
  return false;
}
AssemblerOptions.back()->setNoMacro();
getTargetStreamer().emitDirectiveSetNoMacro();
Parser.Lex(); // Consume the EndOfStatement.
return false;
6517}

6519bool MipsAsmParser::parseSetMsaDirective() {
MCAsmParser &Parser = getParser();
Parser.Lex();

// If this is not the end of the statement, report an error.
if (getLexer().isNot(AsmToken::EndOfStatement))
  return reportParseError("unexpected token, expected end of statement");

setFeatureBits(Mips::FeatureMSA, "msa");
getTargetStreamer().emitDirectiveSetMsa();
return false;
6530}

6532bool MipsAsmParser::parseSetNoMsaDirective() {
MCAsmParser &Parser = getParser();
Parser.Lex();

// If this is not the end of the statement, report an error.
if (getLexer().isNot(AsmToken::EndOfStatement))
  return reportParseError("unexpected token, expected end of statement");

clearFeatureBits(Mips::FeatureMSA, "msa");
getTargetStreamer().emitDirectiveSetNoMsa();
return false;
6543}

6545bool MipsAsmParser::parseSetNoDspDirective() {
MCAsmParser &Parser = getParser();
Parser.Lex(); // Eat "nodsp".

// If this is not the end of the statement, report an error.
if (getLexer().isNot(AsmToken::EndOfStatement)) {
  reportParseError("unexpected token, expected end of statement");
  return false;
}

clearFeatureBits(Mips::FeatureDSP, "dsp");
getTargetStreamer().emitDirectiveSetNoDsp();
return false;
6558}

6560bool MipsAsmParser::parseSetMips16Directive() {
MCAsmParser &Parser = getParser();
Parser.Lex(); // Eat "mips16".

// If this is not the end of the statement, report an error.
if (getLexer().isNot(AsmToken::EndOfStatement)) {
  reportParseError("unexpected token, expected end of statement");
  return false;
}

setFeatureBits(Mips::FeatureMips16, "mips16");
getTargetStreamer().emitDirectiveSetMips16();
Parser.Lex(); // Consume the EndOfStatement.
return false;
6574}

6576bool MipsAsmParser::parseSetNoMips16Directive() {
MCAsmParser &Parser = getParser();
Parser.Lex(); // Eat "nomips16".

// If this is not the end of the statement, report an error.
if (getLexer().isNot(AsmToken::EndOfStatement)) {
  reportParseError("unexpected token, expected end of statement");
  return false;
}

clearFeatureBits(Mips::FeatureMips16, "mips16");
getTargetStreamer().emitDirectiveSetNoMips16();
Parser.Lex(); // Consume the EndOfStatement.
return false;
6590}

6592bool MipsAsmParser::parseSetFpDirective() {
MCAsmParser &Parser = getParser();
MipsABIFlagsSection::FpABIKind FpAbiVal;
// Line can be: .set fp=32
//              .set fp=xx
//              .set fp=64
Parser.Lex(); // Eat fp token
AsmToken Tok = Parser.getTok();
if (Tok.isNot(AsmToken::Equal)) {
  reportParseError("unexpected token, expected equals sign '='");
  return false;
}
Parser.Lex(); // Eat '=' token.
Tok = Parser.getTok();

if (!parseFpABIValue(FpAbiVal, ".set"))
  return false;

if (getLexer().isNot(AsmToken::EndOfStatement)) {
  reportParseError("unexpected token, expected end of statement");
  return false;
}
getTargetStreamer().emitDirectiveSetFp(FpAbiVal);
Parser.Lex(); // Consume the EndOfStatement.
return false;
6617}

6619bool MipsAsmParser::parseSetOddSPRegDirective() {
MCAsmParser &Parser = getParser();

Parser.Lex(); // Eat "oddspreg".
if (getLexer().isNot(AsmToken::EndOfStatement)) {
  reportParseError("unexpected token, expected end of statement");
  return false;
}

clearFeatureBits(Mips::FeatureNoOddSPReg, "nooddspreg");
getTargetStreamer().emitDirectiveSetOddSPReg();
return false;
6631}

6633bool MipsAsmParser::parseSetNoOddSPRegDirective() {
MCAsmParser &Parser = getParser();

Parser.Lex(); // Eat "nooddspreg".
if (getLexer().isNot(AsmToken::EndOfStatement)) {
  reportParseError("unexpected token, expected end of statement");
  return false;
}

setFeatureBits(Mips::FeatureNoOddSPReg, "nooddspreg");
getTargetStreamer().emitDirectiveSetNoOddSPReg();
return false;
6645}

6647bool MipsAsmParser::parseSetMtDirective() {
MCAsmParser &Parser = getParser();
Parser.Lex(); // Eat "mt".

// If this is not the end of the statement, report an error.
if (getLexer().isNot(AsmToken::EndOfStatement)) {
  reportParseError("unexpected token, expected end of statement");
  return false;
}

setFeatureBits(Mips::FeatureMT, "mt");
getTargetStreamer().emitDirectiveSetMt();
Parser.Lex(); // Consume the EndOfStatement.
return false;
6661}

6663bool MipsAsmParser::parseSetNoMtDirective() {
MCAsmParser &Parser = getParser();
Parser.Lex(); // Eat "nomt".

// If this is not the end of the statement, report an error.
if (getLexer().isNot(AsmToken::EndOfStatement)) {
  reportParseError("unexpected token, expected end of statement");
  return false;
}

clearFeatureBits(Mips::FeatureMT, "mt");

getTargetStreamer().emitDirectiveSetNoMt();
Parser.Lex(); // Consume the EndOfStatement.
return false;
6678}

6680bool MipsAsmParser::parseSetNoCRCDirective() {
MCAsmParser &Parser = getParser();
Parser.Lex(); // Eat "nocrc".

// If this is not the end of the statement, report an error.
if (getLexer().isNot(AsmToken::EndOfStatement)) {
  reportParseError("unexpected token, expected end of statement");
  return false;
}

clearFeatureBits(Mips::FeatureCRC, "crc");

getTargetStreamer().emitDirectiveSetNoCRC();
Parser.Lex(); // Consume the EndOfStatement.
return false;
6695}

6697bool MipsAsmParser::parseSetPopDirective() {
MCAsmParser &Parser = getParser();
SMLoc Loc = getLexer().getLoc();

Parser.Lex();
if (getLexer().isNot(AsmToken::EndOfStatement))
  return reportParseError("unexpected token, expected end of statement");

// Always keep an element on the options "stack" to prevent the user
// from changing the initial options. This is how we remember them.
if (AssemblerOptions.size() == 2)
  return reportParseError(Loc, ".set pop with no .set push");

MCSubtargetInfo &STI = copySTI();
AssemblerOptions.pop_back();
setAvailableFeatures(
    ComputeAvailableFeatures(AssemblerOptions.back()->getFeatures()));
STI.setFeatureBits(AssemblerOptions.back()->getFeatures());

getTargetStreamer().emitDirectiveSetPop();
return false;
6718}

6720bool MipsAsmParser::parseSetPushDirective() {
MCAsmParser &Parser = getParser();
Parser.Lex();
if (getLexer().isNot(AsmToken::EndOfStatement))
  return reportParseError("unexpected token, expected end of statement");

// Create a copy of the current assembler options environment and push it.
AssemblerOptions.push_back(
      llvm::make_unique<MipsAssemblerOptions>(AssemblerOptions.back().get()));

getTargetStreamer().emitDirectiveSetPush();
return false;
6732}

6734bool MipsAsmParser::parseSetSoftFloatDirective() {
MCAsmParser &Parser = getParser();
Parser.Lex();
if (getLexer().isNot(AsmToken::EndOfStatement))
  return reportParseError("unexpected token, expected end of statement");

setFeatureBits(Mips::FeatureSoftFloat, "soft-float");
getTargetStreamer().emitDirectiveSetSoftFloat();
return false;
6743}

6745bool MipsAsmParser::parseSetHardFloatDirective() {
MCAsmParser &Parser = getParser();
Parser.Lex();
if (getLexer().isNot(AsmToken::EndOfStatement))
  return reportParseError("unexpected token, expected end of statement");

clearFeatureBits(Mips::FeatureSoftFloat, "soft-float");
getTargetStreamer().emitDirectiveSetHardFloat();
return false;
6754}

6756bool MipsAsmParser::parseSetAssignment() {
StringRef Name;
const MCExpr *Value;
MCAsmParser &Parser = getParser();

if (Parser.parseIdentifier(Name))
  reportParseError("expected identifier after .set");

if (getLexer().isNot(AsmToken::Comma))
  return reportParseError("unexpected token, expected comma");
Lex(); // Eat comma

if (Parser.parseExpression(Value))
  return reportParseError("expected valid expression after comma");

MCSymbol *Sym = getContext().getOrCreateSymbol(Name);
Sym->setVariableValue(Value);

return false;
6775}

6777bool MipsAsmParser::parseSetMips0Directive() {
MCAsmParser &Parser = getParser();
Parser.Lex();
if (getLexer().isNot(AsmToken::EndOfStatement))
  return reportParseError("unexpected token, expected end of statement");

// Reset assembler options to their initial values.
MCSubtargetInfo &STI = copySTI();
setAvailableFeatures(
    ComputeAvailableFeatures(AssemblerOptions.front()->getFeatures()));
STI.setFeatureBits(AssemblerOptions.front()->getFeatures());
AssemblerOptions.back()->setFeatures(AssemblerOptions.front()->getFeatures());

getTargetStreamer().emitDirectiveSetMips0();
return false;
6792}

6794bool MipsAsmParser::parseSetArchDirective() {
MCAsmParser &Parser = getParser();
Parser.Lex();
if (getLexer().isNot(AsmToken::Equal))
  return reportParseError("unexpected token, expected equals sign");

Parser.Lex();
StringRef Arch;
if (Parser.parseIdentifier(Arch))
  return reportParseError("expected arch identifier");

StringRef ArchFeatureName =
    StringSwitch<StringRef>(Arch)
        .Case("mips1", "mips1")
        .Case("mips2", "mips2")
        .Case("mips3", "mips3")
        .Case("mips4", "mips4")
        .Case("mips5", "mips5")
        .Case("mips32", "mips32")
        .Case("mips32r2", "mips32r2")
        .Case("mips32r3", "mips32r3")
        .Case("mips32r5", "mips32r5")
        .Case("mips32r6", "mips32r6")
        .Case("mips64", "mips64")
        .Case("mips64r2", "mips64r2")
        .Case("mips64r3", "mips64r3")
        .Case("mips64r5", "mips64r5")
        .Case("mips64r6", "mips64r6")
        .Case("octeon", "cnmips")
        .Case("r4000", "mips3") // This is an implementation of Mips3.
        .Default("");

if (ArchFeatureName.empty())
  return reportParseError("unsupported architecture");

if (ArchFeatureName == "mips64r6" && inMicroMipsMode())
  return reportParseError("mips64r6 does not support microMIPS");

selectArch(ArchFeatureName);
getTargetStreamer().emitDirectiveSetArch(Arch);
return false;
6835}

6837bool MipsAsmParser::parseSetFeature(uint64_t Feature) {
MCAsmParser &Parser = getParser();
Parser.Lex();
if (getLexer().isNot(AsmToken::EndOfStatement))
  return reportParseError("unexpected token, expected end of statement");

switch (Feature) {
default:
  llvm_unreachable("Unimplemented feature")::llvm::llvm_unreachable_internal("Unimplemented feature", "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 6845);
case Mips::FeatureDSP:
  setFeatureBits(Mips::FeatureDSP, "dsp");
  getTargetStreamer().emitDirectiveSetDsp();
  break;
case Mips::FeatureDSPR2:
  setFeatureBits(Mips::FeatureDSPR2, "dspr2");
  getTargetStreamer().emitDirectiveSetDspr2();
  break;
case Mips::FeatureMicroMips:
  setFeatureBits(Mips::FeatureMicroMips, "micromips");
  getTargetStreamer().emitDirectiveSetMicroMips();
  break;
case Mips::FeatureMips1:
  selectArch("mips1");
  getTargetStreamer().emitDirectiveSetMips1();
  break;
case Mips::FeatureMips2:
  selectArch("mips2");
  getTargetStreamer().emitDirectiveSetMips2();
  break;
case Mips::FeatureMips3:
  selectArch("mips3");
  getTargetStreamer().emitDirectiveSetMips3();
  break;
case Mips::FeatureMips4:
  selectArch("mips4");
  getTargetStreamer().emitDirectiveSetMips4();
  break;
case Mips::FeatureMips5:
  selectArch("mips5");
  getTargetStreamer().emitDirectiveSetMips5();
  break;
case Mips::FeatureMips32:
  selectArch("mips32");
  getTargetStreamer().emitDirectiveSetMips32();
  break;
case Mips::FeatureMips32r2:
  selectArch("mips32r2");
  getTargetStreamer().emitDirectiveSetMips32R2();
  break;
case Mips::FeatureMips32r3:
  selectArch("mips32r3");
  getTargetStreamer().emitDirectiveSetMips32R3();
  break;
case Mips::FeatureMips32r5:
  selectArch("mips32r5");
  getTargetStreamer().emitDirectiveSetMips32R5();
  break;
case Mips::FeatureMips32r6:
  selectArch("mips32r6");
  getTargetStreamer().emitDirectiveSetMips32R6();
  break;
case Mips::FeatureMips64:
  selectArch("mips64");
  getTargetStreamer().emitDirectiveSetMips64();
  break;
case Mips::FeatureMips64r2:
  selectArch("mips64r2");
  getTargetStreamer().emitDirectiveSetMips64R2();
  break;
case Mips::FeatureMips64r3:
  selectArch("mips64r3");
  getTargetStreamer().emitDirectiveSetMips64R3();
  break;
case Mips::FeatureMips64r5:
  selectArch("mips64r5");
  getTargetStreamer().emitDirectiveSetMips64R5();
  break;
case Mips::FeatureMips64r6:
  selectArch("mips64r6");
  getTargetStreamer().emitDirectiveSetMips64R6();
  break;
case Mips::FeatureCRC:
  setFeatureBits(Mips::FeatureCRC, "crc");
  getTargetStreamer().emitDirectiveSetCRC();
  break;
}
return false;
6924}

6926bool MipsAsmParser::eatComma(StringRef ErrorStr) {
MCAsmParser &Parser = getParser();
if (getLexer().isNot(AsmToken::Comma)) {
  SMLoc Loc = getLexer().getLoc();
  return Error(Loc, ErrorStr);
}

Parser.Lex(); // Eat the comma.
return true;
6935}

6937// Used to determine if .cpload, .cprestore, and .cpsetup have any effect.
6938// In this class, it is only used for .cprestore.
6939// FIXME: Only keep track of IsPicEnabled in one place, instead of in both
6940// MipsTargetELFStreamer and MipsAsmParser.
6941bool MipsAsmParser::isPicAndNotNxxAbi() {
return inPicMode() && !(isABI_N32() || isABI_N64());
6943}

6945bool MipsAsmParser::parseDirectiveCpLoad(SMLoc Loc) {
if (AssemblerOptions.back()->isReorder())
  Warning(Loc, ".cpload should be inside a noreorder section");

if (inMips16Mode()) {
  reportParseError(".cpload is not supported in Mips16 mode");
  return false;
}

SmallVector<std::unique_ptr<MCParsedAsmOperand>, 1> Reg;
OperandMatchResultTy ResTy = parseAnyRegister(Reg);
if (ResTy == MatchOperand_NoMatch || ResTy == MatchOperand_ParseFail) {
  reportParseError("expected register containing function address");
  return false;
}

MipsOperand &RegOpnd = static_cast<MipsOperand &>(*Reg[0]);
if (!RegOpnd.isGPRAsmReg()) {
  reportParseError(RegOpnd.getStartLoc(), "invalid register");
  return false;
}

// If this is not the end of the statement, report an error.
if (getLexer().isNot(AsmToken::EndOfStatement)) {
  reportParseError("unexpected token, expected end of statement");
  return false;
}

getTargetStreamer().emitDirectiveCpLoad(RegOpnd.getGPR32Reg());
return false;
6975}

6977bool MipsAsmParser::parseDirectiveCpRestore(SMLoc Loc) {
MCAsmParser &Parser = getParser();

// Note that .cprestore is ignored if used with the N32 and N64 ABIs or if it
// is used in non-PIC mode.

if (inMips16Mode()) {
  reportParseError(".cprestore is not supported in Mips16 mode");
  return false;
}

// Get the stack offset value.
const MCExpr *StackOffset;
int64_t StackOffsetVal;
if (Parser.parseExpression(StackOffset)) {
  reportParseError("expected stack offset value");
  return false;
}

if (!StackOffset->evaluateAsAbsolute(StackOffsetVal)) {
  reportParseError("stack offset is not an absolute expression");
  return false;
}

if (StackOffsetVal < 0) {
  Warning(Loc, ".cprestore with negative stack offset has no effect");
  IsCpRestoreSet = false;
} else {
  IsCpRestoreSet = true;
  CpRestoreOffset = StackOffsetVal;
}

// If this is not the end of the statement, report an error.
if (getLexer().isNot(AsmToken::EndOfStatement)) {
  reportParseError("unexpected token, expected end of statement");
  return false;
}

if (!getTargetStreamer().emitDirectiveCpRestore(
        CpRestoreOffset, [&]() { return getATReg(Loc); }, Loc, STI))
  return true;
Parser.Lex(); // Consume the EndOfStatement.
return false;
7020}

7022bool MipsAsmParser::parseDirectiveCPSetup() {
MCAsmParser &Parser = getParser();
unsigned FuncReg;
unsigned Save;
bool SaveIsReg = true;

SmallVector<std::unique_ptr<MCParsedAsmOperand>, 1> TmpReg;
OperandMatchResultTy ResTy = parseAnyRegister(TmpReg);
if (ResTy == MatchOperand_NoMatch) {
  reportParseError("expected register containing function address");
  return false;
}

MipsOperand &FuncRegOpnd = static_cast<MipsOperand &>(*TmpReg[0]);
if (!FuncRegOpnd.isGPRAsmReg()) {
  reportParseError(FuncRegOpnd.getStartLoc(), "invalid register");
  return false;
}

FuncReg = FuncRegOpnd.getGPR32Reg();
TmpReg.clear();

if (!eatComma("unexpected token, expected comma"))
  return true;

ResTy = parseAnyRegister(TmpReg);
if (ResTy == MatchOperand_NoMatch) {
  const MCExpr *OffsetExpr;
  int64_t OffsetVal;
  SMLoc ExprLoc = getLexer().getLoc();

  if (Parser.parseExpression(OffsetExpr) ||
      !OffsetExpr->evaluateAsAbsolute(OffsetVal)) {
    reportParseError(ExprLoc, "expected save register or stack offset");
    return false;
  }

  Save = OffsetVal;
  SaveIsReg = false;
} else {
  MipsOperand &SaveOpnd = static_cast<MipsOperand &>(*TmpReg[0]);
  if (!SaveOpnd.isGPRAsmReg()) {
    reportParseError(SaveOpnd.getStartLoc(), "invalid register");
    return false;
  }
  Save = SaveOpnd.getGPR32Reg();
}

if (!eatComma("unexpected token, expected comma"))
  return true;

const MCExpr *Expr;
if (Parser.parseExpression(Expr)) {
  reportParseError("expected expression");
  return false;
}

if (Expr->getKind() != MCExpr::SymbolRef) {
  reportParseError("expected symbol");
  return false;
}
const MCSymbolRefExpr *Ref = static_cast<const MCSymbolRefExpr *>(Expr);

CpSaveLocation = Save;
CpSaveLocationIsRegister = SaveIsReg;

getTargetStreamer().emitDirectiveCpsetup(FuncReg, Save, Ref->getSymbol(),
                                         SaveIsReg);
return false;
7091}

7093bool MipsAsmParser::parseDirectiveCPReturn() {
getTargetStreamer().emitDirectiveCpreturn(CpSaveLocation,
                                          CpSaveLocationIsRegister);
return false;
7097}

7099bool MipsAsmParser::parseDirectiveNaN() {
MCAsmParser &Parser = getParser();
if (getLexer().isNot(AsmToken::EndOfStatement)) {
  const AsmToken &Tok = Parser.getTok();

  if (Tok.getString() == "2008") {
    Parser.Lex();
    getTargetStreamer().emitDirectiveNaN2008();
    return false;
  } else if (Tok.getString() == "legacy") {
    Parser.Lex();
    getTargetStreamer().emitDirectiveNaNLegacy();
    return false;
  }
}
// If we don't recognize the option passed to the .nan
// directive (e.g. no option or unknown option), emit an error.
reportParseError("invalid option in .nan directive");
return false;
7118}

7120bool MipsAsmParser::parseDirectiveSet() {
MCAsmParser &Parser = getParser();
// Get the next token.
const AsmToken &Tok = Parser.getTok();

if (Tok.getString() == "noat") {
  return parseSetNoAtDirective();
} else if (Tok.getString() == "at") {
  return parseSetAtDirective();
} else if (Tok.getString() == "arch") {
  return parseSetArchDirective();
} else if (Tok.getString() == "bopt") {
  Warning(Tok.getLoc(), "'bopt' feature is unsupported");
  getParser().Lex();
  return false;
} else if (Tok.getString() == "nobopt") {
  // We're already running in nobopt mode, so nothing to do.
  getParser().Lex();
  return false;
} else if (Tok.getString() == "fp") {
  return parseSetFpDirective();
} else if (Tok.getString() == "oddspreg") {
  return parseSetOddSPRegDirective();
} else if (Tok.getString() == "nooddspreg") {
  return parseSetNoOddSPRegDirective();
} else if (Tok.getString() == "pop") {
  return parseSetPopDirective();
} else if (Tok.getString() == "push") {
  return parseSetPushDirective();
} else if (Tok.getString() == "reorder") {
  return parseSetReorderDirective();
} else if (Tok.getString() == "noreorder") {
  return parseSetNoReorderDirective();
} else if (Tok.getString() == "macro") {
  return parseSetMacroDirective();
} else if (Tok.getString() == "nomacro") {
  return parseSetNoMacroDirective();
} else if (Tok.getString() == "mips16") {
  return parseSetMips16Directive();
} else if (Tok.getString() == "nomips16") {
  return parseSetNoMips16Directive();
} else if (Tok.getString() == "nomicromips") {
  clearFeatureBits(Mips::FeatureMicroMips, "micromips");
  getTargetStreamer().emitDirectiveSetNoMicroMips();
  Parser.eatToEndOfStatement();
  return false;
} else if (Tok.getString() == "micromips") {
  if (hasMips64r6()) {
    Error(Tok.getLoc(), ".set micromips directive is not supported with MIPS64R6");
    return false;
  }
  return parseSetFeature(Mips::FeatureMicroMips);
} else if (Tok.getString() == "mips0") {
  return parseSetMips0Directive();
} else if (Tok.getString() == "mips1") {
  return parseSetFeature(Mips::FeatureMips1);
} else if (Tok.getString() == "mips2") {
  return parseSetFeature(Mips::FeatureMips2);
} else if (Tok.getString() == "mips3") {
  return parseSetFeature(Mips::FeatureMips3);
} else if (Tok.getString() == "mips4") {
  return parseSetFeature(Mips::FeatureMips4);
} else if (Tok.getString() == "mips5") {
  return parseSetFeature(Mips::FeatureMips5);
} else if (Tok.getString() == "mips32") {
  return parseSetFeature(Mips::FeatureMips32);
} else if (Tok.getString() == "mips32r2") {
  return parseSetFeature(Mips::FeatureMips32r2);
} else if (Tok.getString() == "mips32r3") {
  return parseSetFeature(Mips::FeatureMips32r3);
} else if (Tok.getString() == "mips32r5") {
  return parseSetFeature(Mips::FeatureMips32r5);
} else if (Tok.getString() == "mips32r6") {
  return parseSetFeature(Mips::FeatureMips32r6);
} else if (Tok.getString() == "mips64") {
  return parseSetFeature(Mips::FeatureMips64);
} else if (Tok.getString() == "mips64r2") {
  return parseSetFeature(Mips::FeatureMips64r2);
} else if (Tok.getString() == "mips64r3") {
  return parseSetFeature(Mips::FeatureMips64r3);
} else if (Tok.getString() == "mips64r5") {
  return parseSetFeature(Mips::FeatureMips64r5);
} else if (Tok.getString() == "mips64r6") {
  if (inMicroMipsMode()) {
    Error(Tok.getLoc(), "MIPS64R6 is not supported with microMIPS");
    return false;
  }
  return parseSetFeature(Mips::FeatureMips64r6);
} else if (Tok.getString() == "dsp") {
  return parseSetFeature(Mips::FeatureDSP);
} else if (Tok.getString() == "dspr2") {
  return parseSetFeature(Mips::FeatureDSPR2);
} else if (Tok.getString() == "nodsp") {
  return parseSetNoDspDirective();
} else if (Tok.getString() == "msa") {
  return parseSetMsaDirective();
} else if (Tok.getString() == "nomsa") {
  return parseSetNoMsaDirective();
} else if (Tok.getString() == "mt") {
  return parseSetMtDirective();
} else if (Tok.getString() == "nomt") {
  return parseSetNoMtDirective();
} else if (Tok.getString() == "softfloat") {
  return parseSetSoftFloatDirective();
} else if (Tok.getString() == "hardfloat") {
  return parseSetHardFloatDirective();
} else if (Tok.getString() == "crc") {
  return parseSetFeature(Mips::FeatureCRC);
} else if (Tok.getString() == "nocrc") {
  return parseSetNoCRCDirective();
} else {
  // It is just an identifier, look for an assignment.
  parseSetAssignment();
  return false;
}

return true;
7237}

7239/// parseDataDirective
7240///  ::= .word [ expression (, expression)* ]
7241bool MipsAsmParser::parseDataDirective(unsigned Size, SMLoc L) {
MCAsmParser &Parser = getParser();
if (getLexer().isNot(AsmToken::EndOfStatement)) {
  while (true) {
    const MCExpr *Value;
    if (getParser().parseExpression(Value))
      return true;

    getParser().getStreamer().EmitValue(Value, Size);

    if (getLexer().is(AsmToken::EndOfStatement))
      break;

    if (getLexer().isNot(AsmToken::Comma))
      return Error(L, "unexpected token, expected comma");
    Parser.Lex();
  }
}

Parser.Lex();
return false;
7262}

7264/// parseDirectiveGpWord
7265///  ::= .gpword local_sym
7266bool MipsAsmParser::parseDirectiveGpWord() {
MCAsmParser &Parser = getParser();
const MCExpr *Value;
// EmitGPRel32Value requires an expression, so we are using base class
// method to evaluate the expression.
if (getParser().parseExpression(Value))
  return true;
getParser().getStreamer().EmitGPRel32Value(Value);

if (getLexer().isNot(AsmToken::EndOfStatement))
  return Error(getLexer().getLoc(), 
              "unexpected token, expected end of statement");
Parser.Lex(); // Eat EndOfStatement token.
return false;
7280}

7282/// parseDirectiveGpDWord
7283///  ::= .gpdword local_sym
7284bool MipsAsmParser::parseDirectiveGpDWord() {
MCAsmParser &Parser = getParser();
const MCExpr *Value;
// EmitGPRel64Value requires an expression, so we are using base class
// method to evaluate the expression.
if (getParser().parseExpression(Value))
  return true;
getParser().getStreamer().EmitGPRel64Value(Value);

if (getLexer().isNot(AsmToken::EndOfStatement))
  return Error(getLexer().getLoc(),
              "unexpected token, expected end of statement");
Parser.Lex(); // Eat EndOfStatement token.
return false;
7298}

7300/// parseDirectiveDtpRelWord
7301///  ::= .dtprelword tls_sym
7302bool MipsAsmParser::parseDirectiveDtpRelWord() {
MCAsmParser &Parser = getParser();
const MCExpr *Value;
// EmitDTPRel32Value requires an expression, so we are using base class
// method to evaluate the expression.
if (getParser().parseExpression(Value))
  return true;
getParser().getStreamer().EmitDTPRel32Value(Value);

if (getLexer().isNot(AsmToken::EndOfStatement))
  return Error(getLexer().getLoc(),
              "unexpected token, expected end of statement");
Parser.Lex(); // Eat EndOfStatement token.
return false;
7316}

7318/// parseDirectiveDtpRelDWord
7319///  ::= .dtpreldword tls_sym
7320bool MipsAsmParser::parseDirectiveDtpRelDWord() {
MCAsmParser &Parser = getParser();
const MCExpr *Value;
// EmitDTPRel64Value requires an expression, so we are using base class
// method to evaluate the expression.
if (getParser().parseExpression(Value))
  return true;
getParser().getStreamer().EmitDTPRel64Value(Value);

if (getLexer().isNot(AsmToken::EndOfStatement))
  return Error(getLexer().getLoc(),
              "unexpected token, expected end of statement");
Parser.Lex(); // Eat EndOfStatement token.
return false;
7334}

7336/// parseDirectiveTpRelWord
7337///  ::= .tprelword tls_sym
7338bool MipsAsmParser::parseDirectiveTpRelWord() {
MCAsmParser &Parser = getParser();
const MCExpr *Value;
// EmitTPRel32Value requires an expression, so we are using base class
// method to evaluate the expression.
if (getParser().parseExpression(Value))
  return true;
getParser().getStreamer().EmitTPRel32Value(Value);

if (getLexer().isNot(AsmToken::EndOfStatement))
  return Error(getLexer().getLoc(),
              "unexpected token, expected end of statement");
Parser.Lex(); // Eat EndOfStatement token.
return false;
7352}

7354/// parseDirectiveTpRelDWord
7355///  ::= .tpreldword tls_sym
7356bool MipsAsmParser::parseDirectiveTpRelDWord() {
MCAsmParser &Parser = getParser();
const MCExpr *Value;
// EmitTPRel64Value requires an expression, so we are using base class
// method to evaluate the expression.
if (getParser().parseExpression(Value))
  return true;
getParser().getStreamer().EmitTPRel64Value(Value);

if (getLexer().isNot(AsmToken::EndOfStatement))
  return Error(getLexer().getLoc(),
              "unexpected token, expected end of statement");
Parser.Lex(); // Eat EndOfStatement token.
return false;
7370}

7372bool MipsAsmParser::parseDirectiveOption() {
MCAsmParser &Parser = getParser();
// Get the option token.
AsmToken Tok = Parser.getTok();
// At the moment only identifiers are supported.
if (Tok.isNot(AsmToken::Identifier)) {
  return Error(Parser.getTok().getLoc(),
               "unexpected token, expected identifier");
}

StringRef Option = Tok.getIdentifier();

if (Option == "pic0") {
  // MipsAsmParser needs to know if the current PIC mode changes.
  IsPicEnabled = false;

  getTargetStreamer().emitDirectiveOptionPic0();
  Parser.Lex();
  if (Parser.getTok().isNot(AsmToken::EndOfStatement)) {
    return Error(Parser.getTok().getLoc(),
                 "unexpected token, expected end of statement");
  }
  return false;
}

if (Option == "pic2") {
  // MipsAsmParser needs to know if the current PIC mode changes.
  IsPicEnabled = true;

  getTargetStreamer().emitDirectiveOptionPic2();
  Parser.Lex();
  if (Parser.getTok().isNot(AsmToken::EndOfStatement)) {
    return Error(Parser.getTok().getLoc(),
                 "unexpected token, expected end of statement");
  }
  return false;
}

// Unknown option.
Warning(Parser.getTok().getLoc(), 
        "unknown option, expected 'pic0' or 'pic2'");
Parser.eatToEndOfStatement();
return false;
7415}

7417/// parseInsnDirective
7418///  ::= .insn
7419bool MipsAsmParser::parseInsnDirective() {
// If this is not the end of the statement, report an error.
if (getLexer().isNot(AsmToken::EndOfStatement)) {
  reportParseError("unexpected token, expected end of statement");
  return false;
}

// The actual label marking happens in
// MipsELFStreamer::createPendingLabelRelocs().
getTargetStreamer().emitDirectiveInsn();

getParser().Lex(); // Eat EndOfStatement token.
return false;
7432}

7434/// parseRSectionDirective
7435///  ::= .rdata
7436bool MipsAsmParser::parseRSectionDirective(StringRef Section) {
// If this is not the end of the statement, report an error.
if (getLexer().isNot(AsmToken::EndOfStatement)) {
  reportParseError("unexpected token, expected end of statement");
  return false;
}

MCSection *ELFSection = getContext().getELFSection(
    Section, ELF::SHT_PROGBITS, ELF::SHF_ALLOC);
getParser().getStreamer().SwitchSection(ELFSection);

getParser().Lex(); // Eat EndOfStatement token.
return false;
7449}

7451/// parseSSectionDirective
7452///  ::= .sbss
7453///  ::= .sdata
7454bool MipsAsmParser::parseSSectionDirective(StringRef Section, unsigned Type) {
// If this is not the end of the statement, report an error.
if (getLexer().isNot(AsmToken::EndOfStatement)) {
  reportParseError("unexpected token, expected end of statement");
  return false;
}

MCSection *ELFSection = getContext().getELFSection(
    Section, Type, ELF::SHF_WRITE | ELF::SHF_ALLOC | ELF::SHF_MIPS_GPREL);
getParser().getStreamer().SwitchSection(ELFSection);

getParser().Lex(); // Eat EndOfStatement token.
return false;
7467}

7469/// parseDirectiveModule
7470///  ::= .module oddspreg
7471///  ::= .module nooddspreg
7472///  ::= .module fp=value
7473///  ::= .module softfloat
7474///  ::= .module hardfloat
7475///  ::= .module mt
7476///  ::= .module crc
7477///  ::= .module nocrc
7478bool MipsAsmParser::parseDirectiveModule() {
MCAsmParser &Parser = getParser();
MCAsmLexer &Lexer = getLexer();
SMLoc L = Lexer.getLoc();

if (!getTargetStreamer().isModuleDirectiveAllowed()) {
  // TODO : get a better message.
  reportParseError(".module directive must appear before any code");
  return false;
}

StringRef Option;
if (Parser.parseIdentifier(Option)) {
  reportParseError("expected .module option identifier");
  return false;
}

if (Option == "oddspreg") {
  clearModuleFeatureBits(Mips::FeatureNoOddSPReg, "nooddspreg");

  // Synchronize the abiflags information with the FeatureBits information we
  // changed above.
  getTargetStreamer().updateABIInfo(*this);

  // If printing assembly, use the recently updated abiflags information.
  // If generating ELF, don't do anything (the .MIPS.abiflags section gets
  // emitted at the end).
  getTargetStreamer().emitDirectiveModuleOddSPReg();

  // If this is not the end of the statement, report an error.
  if (getLexer().isNot(AsmToken::EndOfStatement)) {
    reportParseError("unexpected token, expected end of statement");
    return false;
  }

  return false; // parseDirectiveModule has finished successfully.
} else if (Option == "nooddspreg") {
  if (!isABI_O32()) {
    return Error(L, "'.module nooddspreg' requires the O32 ABI");
  }

  setModuleFeatureBits(Mips::FeatureNoOddSPReg, "nooddspreg");

  // Synchronize the abiflags information with the FeatureBits information we
  // changed above.
  getTargetStreamer().updateABIInfo(*this);

  // If printing assembly, use the recently updated abiflags information.
  // If generating ELF, don't do anything (the .MIPS.abiflags section gets
  // emitted at the end).
  getTargetStreamer().emitDirectiveModuleOddSPReg();

  // If this is not the end of the statement, report an error.
  if (getLexer().isNot(AsmToken::EndOfStatement)) {
    reportParseError("unexpected token, expected end of statement");
    return false;
  }

  return false; // parseDirectiveModule has finished successfully.
} else if (Option == "fp") {
  return parseDirectiveModuleFP();
} else if (Option == "softfloat") {
  setModuleFeatureBits(Mips::FeatureSoftFloat, "soft-float");

  // Synchronize the ABI Flags information with the FeatureBits information we
  // updated above.
  getTargetStreamer().updateABIInfo(*this);

  // If printing assembly, use the recently updated ABI Flags information.
  // If generating ELF, don't do anything (the .MIPS.abiflags section gets
  // emitted later).
  getTargetStreamer().emitDirectiveModuleSoftFloat();

  // If this is not the end of the statement, report an error.
  if (getLexer().isNot(AsmToken::EndOfStatement)) {
    reportParseError("unexpected token, expected end of statement");
    return false;
  }

  return false; // parseDirectiveModule has finished successfully.
} else if (Option == "hardfloat") {
  clearModuleFeatureBits(Mips::FeatureSoftFloat, "soft-float");

  // Synchronize the ABI Flags information with the FeatureBits information we
  // updated above.
  getTargetStreamer().updateABIInfo(*this);

  // If printing assembly, use the recently updated ABI Flags information.
  // If generating ELF, don't do anything (the .MIPS.abiflags section gets
  // emitted later).
  getTargetStreamer().emitDirectiveModuleHardFloat();

  // If this is not the end of the statement, report an error.
  if (getLexer().isNot(AsmToken::EndOfStatement)) {
    reportParseError("unexpected token, expected end of statement");
    return false;
  }

  return false; // parseDirectiveModule has finished successfully.
} else if (Option == "mt") {
  setModuleFeatureBits(Mips::FeatureMT, "mt");

  // Synchronize the ABI Flags information with the FeatureBits information we
  // updated above.
  getTargetStreamer().updateABIInfo(*this);

  // If printing assembly, use the recently updated ABI Flags information.
  // If generating ELF, don't do anything (the .MIPS.abiflags section gets
  // emitted later).
  getTargetStreamer().emitDirectiveModuleMT();

  // If this is not the end of the statement, report an error.
  if (getLexer().isNot(AsmToken::EndOfStatement)) {
    reportParseError("unexpected token, expected end of statement");
    return false;
  }

  return false; // parseDirectiveModule has finished successfully.
} else if (Option == "crc") {
  setModuleFeatureBits(Mips::FeatureCRC, "crc");

  // Synchronize the ABI Flags information with the FeatureBits information we
  // updated above.
  getTargetStreamer().updateABIInfo(*this);

  // If printing assembly, use the recently updated ABI Flags information.
  // If generating ELF, don't do anything (the .MIPS.abiflags section gets
  // emitted later).
  getTargetStreamer().emitDirectiveModuleCRC();

  // If this is not the end of the statement, report an error.
  if (getLexer().isNot(AsmToken::EndOfStatement)) {
    reportParseError("unexpected token, expected end of statement");
    return false;
  }

  return false; // parseDirectiveModule has finished successfully.
} else if (Option == "nocrc") {
  clearModuleFeatureBits(Mips::FeatureCRC, "crc");

  // Synchronize the ABI Flags information with the FeatureBits information we
  // updated above.
  getTargetStreamer().updateABIInfo(*this);

  // If printing assembly, use the recently updated ABI Flags information.
  // If generating ELF, don't do anything (the .MIPS.abiflags section gets
  // emitted later).
  getTargetStreamer().emitDirectiveModuleNoCRC();

  // If this is not the end of the statement, report an error.
  if (getLexer().isNot(AsmToken::EndOfStatement)) {
    reportParseError("unexpected token, expected end of statement");
    return false;
  }

  return false; // parseDirectiveModule has finished successfully.
} else {
  return Error(L, "'" + Twine(Option) + "' is not a valid .module option.");
}
7637}

7639/// parseDirectiveModuleFP
7640///  ::= =32
7641///  ::= =xx
7642///  ::= =64
7643bool MipsAsmParser::parseDirectiveModuleFP() {
MCAsmParser &Parser = getParser();
MCAsmLexer &Lexer = getLexer();

if (Lexer.isNot(AsmToken::Equal)) {
  reportParseError("unexpected token, expected equals sign '='");
  return false;
}
Parser.Lex(); // Eat '=' token.

MipsABIFlagsSection::FpABIKind FpABI;
if (!parseFpABIValue(FpABI, ".module"))
  return false;

if (getLexer().isNot(AsmToken::EndOfStatement)) {
  reportParseError("unexpected token, expected end of statement");
  return false;
}

// Synchronize the abiflags information with the FeatureBits information we
// changed above.
getTargetStreamer().updateABIInfo(*this);

// If printing assembly, use the recently updated abiflags information.
// If generating ELF, don't do anything (the .MIPS.abiflags section gets
// emitted at the end).
getTargetStreamer().emitDirectiveModuleFP();

Parser.Lex(); // Consume the EndOfStatement.
return false;
7673}

7675bool MipsAsmParser::parseFpABIValue(MipsABIFlagsSection::FpABIKind &FpABI,
                                  StringRef Directive) {
MCAsmParser &Parser = getParser();
MCAsmLexer &Lexer = getLexer();
bool ModuleLevelOptions = Directive == ".module";

if (Lexer.is(AsmToken::Identifier)) {
  StringRef Value = Parser.getTok().getString();
  Parser.Lex();

  if (Value != "xx") {
    reportParseError("unsupported value, expected 'xx', '32' or '64'");
    return false;
  }

  if (!isABI_O32()) {
    reportParseError("'" + Directive + " fp=xx' requires the O32 ABI");
    return false;
  }

  FpABI = MipsABIFlagsSection::FpABIKind::XX;
  if (ModuleLevelOptions) {
    setModuleFeatureBits(Mips::FeatureFPXX, "fpxx");
    clearModuleFeatureBits(Mips::FeatureFP64Bit, "fp64");
  } else {
    setFeatureBits(Mips::FeatureFPXX, "fpxx");
    clearFeatureBits(Mips::FeatureFP64Bit, "fp64");
  }
  return true;
}

if (Lexer.is(AsmToken::Integer)) {
  unsigned Value = Parser.getTok().getIntVal();
  Parser.Lex();

  if (Value != 32 && Value != 64) {
    reportParseError("unsupported value, expected 'xx', '32' or '64'");
    return false;
  }

  if (Value == 32) {
    if (!isABI_O32()) {
      reportParseError("'" + Directive + " fp=32' requires the O32 ABI");
      return false;
    }

    FpABI = MipsABIFlagsSection::FpABIKind::S32;
    if (ModuleLevelOptions) {
      clearModuleFeatureBits(Mips::FeatureFPXX, "fpxx");
      clearModuleFeatureBits(Mips::FeatureFP64Bit, "fp64");
    } else {
      clearFeatureBits(Mips::FeatureFPXX, "fpxx");
      clearFeatureBits(Mips::FeatureFP64Bit, "fp64");
    }
  } else {
    FpABI = MipsABIFlagsSection::FpABIKind::S64;
    if (ModuleLevelOptions) {
      clearModuleFeatureBits(Mips::FeatureFPXX, "fpxx");
      setModuleFeatureBits(Mips::FeatureFP64Bit, "fp64");
    } else {
      clearFeatureBits(Mips::FeatureFPXX, "fpxx");
      setFeatureBits(Mips::FeatureFP64Bit, "fp64");
    }
  }

  return true;
}

return false;
7744}

7746bool MipsAsmParser::ParseDirective(AsmToken DirectiveID) {
// This returns false if this function recognizes the directive
// regardless of whether it is successfully handles or reports an
// error. Otherwise it returns true to give the generic parser a
// chance at recognizing it.

MCAsmParser &Parser = getParser();
StringRef IDVal = DirectiveID.getString();

if (IDVal == ".cpload") {
  parseDirectiveCpLoad(DirectiveID.getLoc());
  return false;
}
if (IDVal == ".cprestore") {
  parseDirectiveCpRestore(DirectiveID.getLoc());
  return false;
}
if (IDVal == ".dword") {
  parseDataDirective(8, DirectiveID.getLoc());
  return false;
}
if (IDVal == ".ent") {
  StringRef SymbolName;

  if (Parser.parseIdentifier(SymbolName)) {
    reportParseError("expected identifier after .ent");
    return false;
  }

  // There's an undocumented extension that allows an integer to
  // follow the name of the procedure which AFAICS is ignored by GAS.
  // Example: .ent foo,2
  if (getLexer().isNot(AsmToken::EndOfStatement)) {
    if (getLexer().isNot(AsmToken::Comma)) {
      // Even though we accept this undocumented extension for compatibility
      // reasons, the additional integer argument does not actually change
      // the behaviour of the '.ent' directive, so we would like to discourage
      // its use. We do this by not referring to the extended version in
      // error messages which are not directly related to its use.
      reportParseError("unexpected token, expected end of statement");
      return false;
    }
    Parser.Lex(); // Eat the comma.
    const MCExpr *DummyNumber;
    int64_t DummyNumberVal;
    // If the user was explicitly trying to use the extended version,
    // we still give helpful extension-related error messages.
    if (Parser.parseExpression(DummyNumber)) {
      reportParseError("expected number after comma");
      return false;
    }
    if (!DummyNumber->evaluateAsAbsolute(DummyNumberVal)) {
      reportParseError("expected an absolute expression after comma");
      return false;
    }
  }

  // If this is not the end of the statement, report an error.
  if (getLexer().isNot(AsmToken::EndOfStatement)) {
    reportParseError("unexpected token, expected end of statement");
    return false;
  }

  MCSymbol *Sym = getContext().getOrCreateSymbol(SymbolName);

  getTargetStreamer().emitDirectiveEnt(*Sym);
  CurrentFn = Sym;
  IsCpRestoreSet = false;
  return false;
}

if (IDVal == ".end") {
  StringRef SymbolName;

  if (Parser.parseIdentifier(SymbolName)) {
    reportParseError("expected identifier after .end");
    return false;
  }

  if (getLexer().isNot(AsmToken::EndOfStatement)) {
    reportParseError("unexpected token, expected end of statement");
    return false;
  }

  if (CurrentFn == nullptr) {
    reportParseError(".end used without .ent");
    return false;
  }

  if ((SymbolName != CurrentFn->getName())) {
    reportParseError(".end symbol does not match .ent symbol");
    return false;
  }

  getTargetStreamer().emitDirectiveEnd(SymbolName);
  CurrentFn = nullptr;
  IsCpRestoreSet = false;
  return false;
}

if (IDVal == ".frame") {
  // .frame $stack_reg, frame_size_in_bytes, $return_reg
  SmallVector<std::unique_ptr<MCParsedAsmOperand>, 1> TmpReg;
  OperandMatchResultTy ResTy = parseAnyRegister(TmpReg);
  if (ResTy == MatchOperand_NoMatch || ResTy == MatchOperand_ParseFail) {
    reportParseError("expected stack register");
    return false;
  }

  MipsOperand &StackRegOpnd = static_cast<MipsOperand &>(*TmpReg[0]);
  if (!StackRegOpnd.isGPRAsmReg()) {
    reportParseError(StackRegOpnd.getStartLoc(),
                     "expected general purpose register");
    return false;
  }
  unsigned StackReg = StackRegOpnd.getGPR32Reg();

  if (Parser.getTok().is(AsmToken::Comma))
    Parser.Lex();
  else {
    reportParseError("unexpected token, expected comma");
    return false;
  }

  // Parse the frame size.
  const MCExpr *FrameSize;
  int64_t FrameSizeVal;

  if (Parser.parseExpression(FrameSize)) {
    reportParseError("expected frame size value");
    return false;
  }

  if (!FrameSize->evaluateAsAbsolute(FrameSizeVal)) {
    reportParseError("frame size not an absolute expression");
    return false;
  }

  if (Parser.getTok().is(AsmToken::Comma))
    Parser.Lex();
  else {
    reportParseError("unexpected token, expected comma");
    return false;
  }

  // Parse the return register.
  TmpReg.clear();
  ResTy = parseAnyRegister(TmpReg);
  if (ResTy == MatchOperand_NoMatch || ResTy == MatchOperand_ParseFail) {
    reportParseError("expected return register");
    return false;
  }

  MipsOperand &ReturnRegOpnd = static_cast<MipsOperand &>(*TmpReg[0]);
  if (!ReturnRegOpnd.isGPRAsmReg()) {
    reportParseError(ReturnRegOpnd.getStartLoc(),
                     "expected general purpose register");
    return false;
  }

  // If this is not the end of the statement, report an error.
  if (getLexer().isNot(AsmToken::EndOfStatement)) {
    reportParseError("unexpected token, expected end of statement");
    return false;
  }

  getTargetStreamer().emitFrame(StackReg, FrameSizeVal,
                                ReturnRegOpnd.getGPR32Reg());
  IsCpRestoreSet = false;
  return false;
}

if (IDVal == ".set") {
  parseDirectiveSet();
  return false;
}

if (IDVal == ".mask" || IDVal == ".fmask") {
  // .mask bitmask, frame_offset
  // bitmask: One bit for each register used.
  // frame_offset: Offset from Canonical Frame Address ($sp on entry) where
  //               first register is expected to be saved.
  // Examples:
  //   .mask 0x80000000, -4
  //   .fmask 0x80000000, -4
  //

  // Parse the bitmask
  const MCExpr *BitMask;
  int64_t BitMaskVal;

  if (Parser.parseExpression(BitMask)) {
    reportParseError("expected bitmask value");
    return false;
  }

  if (!BitMask->evaluateAsAbsolute(BitMaskVal)) {
    reportParseError("bitmask not an absolute expression");
    return false;
  }

  if (Parser.getTok().is(AsmToken::Comma))
    Parser.Lex();
  else {
    reportParseError("unexpected token, expected comma");
    return false;
  }

  // Parse the frame_offset
  const MCExpr *FrameOffset;
  int64_t FrameOffsetVal;

  if (Parser.parseExpression(FrameOffset)) {
    reportParseError("expected frame offset value");
    return false;
  }

  if (!FrameOffset->evaluateAsAbsolute(FrameOffsetVal)) {
    reportParseError("frame offset not an absolute expression");
    return false;
  }

  // If this is not the end of the statement, report an error.
  if (getLexer().isNot(AsmToken::EndOfStatement)) {
    reportParseError("unexpected token, expected end of statement");
    return false;
  }

  if (IDVal == ".mask")
    getTargetStreamer().emitMask(BitMaskVal, FrameOffsetVal);
  else
    getTargetStreamer().emitFMask(BitMaskVal, FrameOffsetVal);
  return false;
}

if (IDVal == ".nan")
  return parseDirectiveNaN();

if (IDVal == ".gpword") {
  parseDirectiveGpWord();
  return false;
}

if (IDVal == ".gpdword") {
  parseDirectiveGpDWord();
  return false;
}

if (IDVal == ".dtprelword") {
  parseDirectiveDtpRelWord();
  return false;
}

if (IDVal == ".dtpreldword") {
  parseDirectiveDtpRelDWord();
  return false;
}

if (IDVal == ".tprelword") {
  parseDirectiveTpRelWord();
  return false;
}

if (IDVal == ".tpreldword") {
  parseDirectiveTpRelDWord();
  return false;
}

if (IDVal == ".word") {
  parseDataDirective(4, DirectiveID.getLoc());
  return false;
}

if (IDVal == ".hword") {
  parseDataDirective(2, DirectiveID.getLoc());
  return false;
}

if (IDVal == ".option") {
  parseDirectiveOption();
  return false;
}

if (IDVal == ".abicalls") {
  getTargetStreamer().emitDirectiveAbiCalls();
  if (Parser.getTok().isNot(AsmToken::EndOfStatement)) {
    Error(Parser.getTok().getLoc(), 
          "unexpected token, expected end of statement");
  }
  return false;
}

if (IDVal == ".cpsetup") {
  parseDirectiveCPSetup();
  return false;
}
if (IDVal == ".cpreturn") {
  parseDirectiveCPReturn();
  return false;
}
if (IDVal == ".module") {
  parseDirectiveModule();
  return false;
}
if (IDVal == ".llvm_internal_mips_reallow_module_directive") {
  parseInternalDirectiveReallowModule();
  return false;
}
if (IDVal == ".insn") {
  parseInsnDirective();
  return false;
}
if (IDVal == ".rdata") {
  parseRSectionDirective(".rodata");
  return false;
}
if (IDVal == ".sbss") {
  parseSSectionDirective(IDVal, ELF::SHT_NOBITS);
  return false;
}
if (IDVal == ".sdata") {
  parseSSectionDirective(IDVal, ELF::SHT_PROGBITS);
  return false;
}

return true;
8072}

8074bool MipsAsmParser::parseInternalDirectiveReallowModule() {
// If this is not the end of the statement, report an error.
if (getLexer().isNot(AsmToken::EndOfStatement)) {
  reportParseError("unexpected token, expected end of statement");
  return false;
}

getTargetStreamer().reallowModuleDirective();

getParser().Lex(); // Eat EndOfStatement token.
return false;
8085}

8087extern "C" void LLVMInitializeMipsAsmParser() {
RegisterMCAsmParser<MipsAsmParser> X(getTheMipsTarget());
RegisterMCAsmParser<MipsAsmParser> Y(getTheMipselTarget());
RegisterMCAsmParser<MipsAsmParser> A(getTheMips64Target());
RegisterMCAsmParser<MipsAsmParser> B(getTheMips64elTarget());
8092}

8094#define GET_REGISTER_MATCHER
8095#define GET_MATCHER_IMPLEMENTATION
8096#include "MipsGenAsmMatcher.inc"

8098bool MipsAsmParser::mnemonicIsValid(StringRef Mnemonic, unsigned VariantID) {
// Find the appropriate table for this asm variant.
const MatchEntry *Start, *End;
switch (VariantID) {
default: llvm_unreachable("invalid variant!")::llvm::llvm_unreachable_internal("invalid variant!", "/build/llvm-toolchain-snapshot-7~svn329677/lib/Target/Mips/AsmParser/MipsAsmParser.cpp"
, 8102);
case 0: Start = std::begin(MatchTable0); End = std::end(MatchTable0); break;
}
// Search the table.
auto MnemonicRange = std::equal_range(Start, End, Mnemonic, LessOpcode());
return MnemonicRange.first != MnemonicRange.second;
8108}