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Diffstat (limited to 'gnu/llvm/lib/CodeGen/MIRParser/MIParser.cpp')
| -rw-r--r-- | gnu/llvm/lib/CodeGen/MIRParser/MIParser.cpp | 3005 |
1 files changed, 0 insertions, 3005 deletions
diff --git a/gnu/llvm/lib/CodeGen/MIRParser/MIParser.cpp b/gnu/llvm/lib/CodeGen/MIRParser/MIParser.cpp deleted file mode 100644 index 6f2d8bb53ac..00000000000 --- a/gnu/llvm/lib/CodeGen/MIRParser/MIParser.cpp +++ /dev/null @@ -1,3005 +0,0 @@ -//===- MIParser.cpp - Machine instructions parser implementation ----------===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -// -// This file implements the parsing of machine instructions. -// -//===----------------------------------------------------------------------===// - -#include "MIParser.h" -#include "MILexer.h" -#include "llvm/ADT/APInt.h" -#include "llvm/ADT/APSInt.h" -#include "llvm/ADT/ArrayRef.h" -#include "llvm/ADT/DenseMap.h" -#include "llvm/ADT/None.h" -#include "llvm/ADT/Optional.h" -#include "llvm/ADT/SmallVector.h" -#include "llvm/ADT/StringMap.h" -#include "llvm/ADT/StringRef.h" -#include "llvm/ADT/StringSwitch.h" -#include "llvm/ADT/Twine.h" -#include "llvm/Analysis/MemoryLocation.h" -#include "llvm/AsmParser/Parser.h" -#include "llvm/AsmParser/SlotMapping.h" -#include "llvm/CodeGen/MIRPrinter.h" -#include "llvm/CodeGen/MachineBasicBlock.h" -#include "llvm/CodeGen/MachineFrameInfo.h" -#include "llvm/CodeGen/MachineFunction.h" -#include "llvm/CodeGen/MachineInstr.h" -#include "llvm/CodeGen/MachineInstrBuilder.h" -#include "llvm/CodeGen/MachineMemOperand.h" -#include "llvm/CodeGen/MachineOperand.h" -#include "llvm/CodeGen/MachineRegisterInfo.h" -#include "llvm/CodeGen/TargetInstrInfo.h" -#include "llvm/CodeGen/TargetRegisterInfo.h" -#include "llvm/CodeGen/TargetSubtargetInfo.h" -#include "llvm/IR/BasicBlock.h" -#include "llvm/IR/Constants.h" -#include "llvm/IR/DataLayout.h" -#include "llvm/IR/DebugInfoMetadata.h" -#include "llvm/IR/DebugLoc.h" -#include "llvm/IR/Function.h" -#include "llvm/IR/InstrTypes.h" -#include "llvm/IR/Instructions.h" -#include "llvm/IR/Intrinsics.h" -#include "llvm/IR/Metadata.h" -#include "llvm/IR/Module.h" -#include "llvm/IR/ModuleSlotTracker.h" -#include "llvm/IR/Type.h" -#include "llvm/IR/Value.h" -#include "llvm/IR/ValueSymbolTable.h" -#include "llvm/MC/LaneBitmask.h" -#include "llvm/MC/MCContext.h" -#include "llvm/MC/MCDwarf.h" -#include "llvm/MC/MCInstrDesc.h" -#include "llvm/MC/MCRegisterInfo.h" -#include "llvm/Support/AtomicOrdering.h" -#include "llvm/Support/BranchProbability.h" -#include "llvm/Support/Casting.h" -#include "llvm/Support/ErrorHandling.h" -#include "llvm/Support/LowLevelTypeImpl.h" -#include "llvm/Support/MemoryBuffer.h" -#include "llvm/Support/SMLoc.h" -#include "llvm/Support/SourceMgr.h" -#include "llvm/Support/raw_ostream.h" -#include "llvm/Target/TargetIntrinsicInfo.h" -#include "llvm/Target/TargetMachine.h" -#include <algorithm> -#include <cassert> -#include <cctype> -#include <cstddef> -#include <cstdint> -#include <limits> -#include <string> -#include <utility> - -using namespace llvm; - -PerFunctionMIParsingState::PerFunctionMIParsingState(MachineFunction &MF, - SourceMgr &SM, const SlotMapping &IRSlots, - const Name2RegClassMap &Names2RegClasses, - const Name2RegBankMap &Names2RegBanks) - : MF(MF), SM(&SM), IRSlots(IRSlots), Names2RegClasses(Names2RegClasses), - Names2RegBanks(Names2RegBanks) { -} - -VRegInfo &PerFunctionMIParsingState::getVRegInfo(unsigned Num) { - auto I = VRegInfos.insert(std::make_pair(Num, nullptr)); - if (I.second) { - MachineRegisterInfo &MRI = MF.getRegInfo(); - VRegInfo *Info = new (Allocator) VRegInfo; - Info->VReg = MRI.createIncompleteVirtualRegister(); - I.first->second = Info; - } - return *I.first->second; -} - -VRegInfo &PerFunctionMIParsingState::getVRegInfoNamed(StringRef RegName) { - assert(RegName != "" && "Expected named reg."); - - auto I = VRegInfosNamed.insert(std::make_pair(RegName.str(), nullptr)); - if (I.second) { - VRegInfo *Info = new (Allocator) VRegInfo; - Info->VReg = MF.getRegInfo().createIncompleteVirtualRegister(RegName); - I.first->second = Info; - } - return *I.first->second; -} - -namespace { - -/// A wrapper struct around the 'MachineOperand' struct that includes a source -/// range and other attributes. -struct ParsedMachineOperand { - MachineOperand Operand; - StringRef::iterator Begin; - StringRef::iterator End; - Optional<unsigned> TiedDefIdx; - - ParsedMachineOperand(const MachineOperand &Operand, StringRef::iterator Begin, - StringRef::iterator End, Optional<unsigned> &TiedDefIdx) - : Operand(Operand), Begin(Begin), End(End), TiedDefIdx(TiedDefIdx) { - if (TiedDefIdx) - assert(Operand.isReg() && Operand.isUse() && - "Only used register operands can be tied"); - } -}; - -class MIParser { - MachineFunction &MF; - SMDiagnostic &Error; - StringRef Source, CurrentSource; - MIToken Token; - PerFunctionMIParsingState &PFS; - /// Maps from instruction names to op codes. - StringMap<unsigned> Names2InstrOpCodes; - /// Maps from register names to registers. - StringMap<unsigned> Names2Regs; - /// Maps from register mask names to register masks. - StringMap<const uint32_t *> Names2RegMasks; - /// Maps from subregister names to subregister indices. - StringMap<unsigned> Names2SubRegIndices; - /// Maps from slot numbers to function's unnamed basic blocks. - DenseMap<unsigned, const BasicBlock *> Slots2BasicBlocks; - /// Maps from slot numbers to function's unnamed values. - DenseMap<unsigned, const Value *> Slots2Values; - /// Maps from target index names to target indices. - StringMap<int> Names2TargetIndices; - /// Maps from direct target flag names to the direct target flag values. - StringMap<unsigned> Names2DirectTargetFlags; - /// Maps from direct target flag names to the bitmask target flag values. - StringMap<unsigned> Names2BitmaskTargetFlags; - /// Maps from MMO target flag names to MMO target flag values. - StringMap<MachineMemOperand::Flags> Names2MMOTargetFlags; - -public: - MIParser(PerFunctionMIParsingState &PFS, SMDiagnostic &Error, - StringRef Source); - - /// \p SkipChar gives the number of characters to skip before looking - /// for the next token. - void lex(unsigned SkipChar = 0); - - /// Report an error at the current location with the given message. - /// - /// This function always return true. - bool error(const Twine &Msg); - - /// Report an error at the given location with the given message. - /// - /// This function always return true. - bool error(StringRef::iterator Loc, const Twine &Msg); - - bool - parseBasicBlockDefinitions(DenseMap<unsigned, MachineBasicBlock *> &MBBSlots); - bool parseBasicBlocks(); - bool parse(MachineInstr *&MI); - bool parseStandaloneMBB(MachineBasicBlock *&MBB); - bool parseStandaloneNamedRegister(unsigned &Reg); - bool parseStandaloneVirtualRegister(VRegInfo *&Info); - bool parseStandaloneRegister(unsigned &Reg); - bool parseStandaloneStackObject(int &FI); - bool parseStandaloneMDNode(MDNode *&Node); - - bool - parseBasicBlockDefinition(DenseMap<unsigned, MachineBasicBlock *> &MBBSlots); - bool parseBasicBlock(MachineBasicBlock &MBB, - MachineBasicBlock *&AddFalthroughFrom); - bool parseBasicBlockLiveins(MachineBasicBlock &MBB); - bool parseBasicBlockSuccessors(MachineBasicBlock &MBB); - - bool parseNamedRegister(unsigned &Reg); - bool parseVirtualRegister(VRegInfo *&Info); - bool parseNamedVirtualRegister(VRegInfo *&Info); - bool parseRegister(unsigned &Reg, VRegInfo *&VRegInfo); - bool parseRegisterFlag(unsigned &Flags); - bool parseRegisterClassOrBank(VRegInfo &RegInfo); - bool parseSubRegisterIndex(unsigned &SubReg); - bool parseRegisterTiedDefIndex(unsigned &TiedDefIdx); - bool parseRegisterOperand(MachineOperand &Dest, - Optional<unsigned> &TiedDefIdx, bool IsDef = false); - bool parseImmediateOperand(MachineOperand &Dest); - bool parseIRConstant(StringRef::iterator Loc, StringRef StringValue, - const Constant *&C); - bool parseIRConstant(StringRef::iterator Loc, const Constant *&C); - bool parseLowLevelType(StringRef::iterator Loc, LLT &Ty); - bool parseTypedImmediateOperand(MachineOperand &Dest); - bool parseFPImmediateOperand(MachineOperand &Dest); - bool parseMBBReference(MachineBasicBlock *&MBB); - bool parseMBBOperand(MachineOperand &Dest); - bool parseStackFrameIndex(int &FI); - bool parseStackObjectOperand(MachineOperand &Dest); - bool parseFixedStackFrameIndex(int &FI); - bool parseFixedStackObjectOperand(MachineOperand &Dest); - bool parseGlobalValue(GlobalValue *&GV); - bool parseGlobalAddressOperand(MachineOperand &Dest); - bool parseConstantPoolIndexOperand(MachineOperand &Dest); - bool parseSubRegisterIndexOperand(MachineOperand &Dest); - bool parseJumpTableIndexOperand(MachineOperand &Dest); - bool parseExternalSymbolOperand(MachineOperand &Dest); - bool parseMCSymbolOperand(MachineOperand &Dest); - bool parseMDNode(MDNode *&Node); - bool parseDIExpression(MDNode *&Expr); - bool parseDILocation(MDNode *&Expr); - bool parseMetadataOperand(MachineOperand &Dest); - bool parseCFIOffset(int &Offset); - bool parseCFIRegister(unsigned &Reg); - bool parseCFIEscapeValues(std::string& Values); - bool parseCFIOperand(MachineOperand &Dest); - bool parseIRBlock(BasicBlock *&BB, const Function &F); - bool parseBlockAddressOperand(MachineOperand &Dest); - bool parseIntrinsicOperand(MachineOperand &Dest); - bool parsePredicateOperand(MachineOperand &Dest); - bool parseTargetIndexOperand(MachineOperand &Dest); - bool parseCustomRegisterMaskOperand(MachineOperand &Dest); - bool parseLiveoutRegisterMaskOperand(MachineOperand &Dest); - bool parseMachineOperand(MachineOperand &Dest, - Optional<unsigned> &TiedDefIdx); - bool parseMachineOperandAndTargetFlags(MachineOperand &Dest, - Optional<unsigned> &TiedDefIdx); - bool parseOffset(int64_t &Offset); - bool parseAlignment(unsigned &Alignment); - bool parseAddrspace(unsigned &Addrspace); - bool parseOperandsOffset(MachineOperand &Op); - bool parseIRValue(const Value *&V); - bool parseMemoryOperandFlag(MachineMemOperand::Flags &Flags); - bool parseMemoryPseudoSourceValue(const PseudoSourceValue *&PSV); - bool parseMachinePointerInfo(MachinePointerInfo &Dest); - bool parseOptionalScope(LLVMContext &Context, SyncScope::ID &SSID); - bool parseOptionalAtomicOrdering(AtomicOrdering &Order); - bool parseMachineMemoryOperand(MachineMemOperand *&Dest); - bool parsePreOrPostInstrSymbol(MCSymbol *&Symbol); - -private: - /// Convert the integer literal in the current token into an unsigned integer. - /// - /// Return true if an error occurred. - bool getUnsigned(unsigned &Result); - - /// Convert the integer literal in the current token into an uint64. - /// - /// Return true if an error occurred. - bool getUint64(uint64_t &Result); - - /// Convert the hexadecimal literal in the current token into an unsigned - /// APInt with a minimum bitwidth required to represent the value. - /// - /// Return true if the literal does not represent an integer value. - bool getHexUint(APInt &Result); - - /// If the current token is of the given kind, consume it and return false. - /// Otherwise report an error and return true. - bool expectAndConsume(MIToken::TokenKind TokenKind); - - /// If the current token is of the given kind, consume it and return true. - /// Otherwise return false. - bool consumeIfPresent(MIToken::TokenKind TokenKind); - - void initNames2InstrOpCodes(); - - /// Try to convert an instruction name to an opcode. Return true if the - /// instruction name is invalid. - bool parseInstrName(StringRef InstrName, unsigned &OpCode); - - bool parseInstruction(unsigned &OpCode, unsigned &Flags); - - bool assignRegisterTies(MachineInstr &MI, - ArrayRef<ParsedMachineOperand> Operands); - - bool verifyImplicitOperands(ArrayRef<ParsedMachineOperand> Operands, - const MCInstrDesc &MCID); - - void initNames2Regs(); - - /// Try to convert a register name to a register number. Return true if the - /// register name is invalid. - bool getRegisterByName(StringRef RegName, unsigned &Reg); - - void initNames2RegMasks(); - - /// Check if the given identifier is a name of a register mask. - /// - /// Return null if the identifier isn't a register mask. - const uint32_t *getRegMask(StringRef Identifier); - - void initNames2SubRegIndices(); - - /// Check if the given identifier is a name of a subregister index. - /// - /// Return 0 if the name isn't a subregister index class. - unsigned getSubRegIndex(StringRef Name); - - const BasicBlock *getIRBlock(unsigned Slot); - const BasicBlock *getIRBlock(unsigned Slot, const Function &F); - - const Value *getIRValue(unsigned Slot); - - void initNames2TargetIndices(); - - /// Try to convert a name of target index to the corresponding target index. - /// - /// Return true if the name isn't a name of a target index. - bool getTargetIndex(StringRef Name, int &Index); - - void initNames2DirectTargetFlags(); - - /// Try to convert a name of a direct target flag to the corresponding - /// target flag. - /// - /// Return true if the name isn't a name of a direct flag. - bool getDirectTargetFlag(StringRef Name, unsigned &Flag); - - void initNames2BitmaskTargetFlags(); - - /// Try to convert a name of a bitmask target flag to the corresponding - /// target flag. - /// - /// Return true if the name isn't a name of a bitmask target flag. - bool getBitmaskTargetFlag(StringRef Name, unsigned &Flag); - - void initNames2MMOTargetFlags(); - - /// Try to convert a name of a MachineMemOperand target flag to the - /// corresponding target flag. - /// - /// Return true if the name isn't a name of a target MMO flag. - bool getMMOTargetFlag(StringRef Name, MachineMemOperand::Flags &Flag); - - /// Get or create an MCSymbol for a given name. - MCSymbol *getOrCreateMCSymbol(StringRef Name); - - /// parseStringConstant - /// ::= StringConstant - bool parseStringConstant(std::string &Result); -}; - -} // end anonymous namespace - -MIParser::MIParser(PerFunctionMIParsingState &PFS, SMDiagnostic &Error, - StringRef Source) - : MF(PFS.MF), Error(Error), Source(Source), CurrentSource(Source), PFS(PFS) -{} - -void MIParser::lex(unsigned SkipChar) { - CurrentSource = lexMIToken( - CurrentSource.data() + SkipChar, Token, - [this](StringRef::iterator Loc, const Twine &Msg) { error(Loc, Msg); }); -} - -bool MIParser::error(const Twine &Msg) { return error(Token.location(), Msg); } - -bool MIParser::error(StringRef::iterator Loc, const Twine &Msg) { - const SourceMgr &SM = *PFS.SM; - assert(Loc >= Source.data() && Loc <= (Source.data() + Source.size())); - const MemoryBuffer &Buffer = *SM.getMemoryBuffer(SM.getMainFileID()); - if (Loc >= Buffer.getBufferStart() && Loc <= Buffer.getBufferEnd()) { - // Create an ordinary diagnostic when the source manager's buffer is the - // source string. - Error = SM.GetMessage(SMLoc::getFromPointer(Loc), SourceMgr::DK_Error, Msg); - return true; - } - // Create a diagnostic for a YAML string literal. - Error = SMDiagnostic(SM, SMLoc(), Buffer.getBufferIdentifier(), 1, - Loc - Source.data(), SourceMgr::DK_Error, Msg.str(), - Source, None, None); - return true; -} - -static const char *toString(MIToken::TokenKind TokenKind) { - switch (TokenKind) { - case MIToken::comma: - return "','"; - case MIToken::equal: - return "'='"; - case MIToken::colon: - return "':'"; - case MIToken::lparen: - return "'('"; - case MIToken::rparen: - return "')'"; - default: - return "<unknown token>"; - } -} - -bool MIParser::expectAndConsume(MIToken::TokenKind TokenKind) { - if (Token.isNot(TokenKind)) - return error(Twine("expected ") + toString(TokenKind)); - lex(); - return false; -} - -bool MIParser::consumeIfPresent(MIToken::TokenKind TokenKind) { - if (Token.isNot(TokenKind)) - return false; - lex(); - return true; -} - -bool MIParser::parseBasicBlockDefinition( - DenseMap<unsigned, MachineBasicBlock *> &MBBSlots) { - assert(Token.is(MIToken::MachineBasicBlockLabel)); - unsigned ID = 0; - if (getUnsigned(ID)) - return true; - auto Loc = Token.location(); - auto Name = Token.stringValue(); - lex(); - bool HasAddressTaken = false; - bool IsLandingPad = false; - unsigned Alignment = 0; - BasicBlock *BB = nullptr; - if (consumeIfPresent(MIToken::lparen)) { - do { - // TODO: Report an error when multiple same attributes are specified. - switch (Token.kind()) { - case MIToken::kw_address_taken: - HasAddressTaken = true; - lex(); - break; - case MIToken::kw_landing_pad: - IsLandingPad = true; - lex(); - break; - case MIToken::kw_align: - if (parseAlignment(Alignment)) - return true; - break; - case MIToken::IRBlock: - // TODO: Report an error when both name and ir block are specified. - if (parseIRBlock(BB, MF.getFunction())) - return true; - lex(); - break; - default: - break; - } - } while (consumeIfPresent(MIToken::comma)); - if (expectAndConsume(MIToken::rparen)) - return true; - } - if (expectAndConsume(MIToken::colon)) - return true; - - if (!Name.empty()) { - BB = dyn_cast_or_null<BasicBlock>( - MF.getFunction().getValueSymbolTable()->lookup(Name)); - if (!BB) - return error(Loc, Twine("basic block '") + Name + - "' is not defined in the function '" + - MF.getName() + "'"); - } - auto *MBB = MF.CreateMachineBasicBlock(BB); - MF.insert(MF.end(), MBB); - bool WasInserted = MBBSlots.insert(std::make_pair(ID, MBB)).second; - if (!WasInserted) - return error(Loc, Twine("redefinition of machine basic block with id #") + - Twine(ID)); - if (Alignment) - MBB->setAlignment(Alignment); - if (HasAddressTaken) - MBB->setHasAddressTaken(); - MBB->setIsEHPad(IsLandingPad); - return false; -} - -bool MIParser::parseBasicBlockDefinitions( - DenseMap<unsigned, MachineBasicBlock *> &MBBSlots) { - lex(); - // Skip until the first machine basic block. - while (Token.is(MIToken::Newline)) - lex(); - if (Token.isErrorOrEOF()) - return Token.isError(); - if (Token.isNot(MIToken::MachineBasicBlockLabel)) - return error("expected a basic block definition before instructions"); - unsigned BraceDepth = 0; - do { - if (parseBasicBlockDefinition(MBBSlots)) - return true; - bool IsAfterNewline = false; - // Skip until the next machine basic block. - while (true) { - if ((Token.is(MIToken::MachineBasicBlockLabel) && IsAfterNewline) || - Token.isErrorOrEOF()) - break; - else if (Token.is(MIToken::MachineBasicBlockLabel)) - return error("basic block definition should be located at the start of " - "the line"); - else if (consumeIfPresent(MIToken::Newline)) { - IsAfterNewline = true; - continue; - } - IsAfterNewline = false; - if (Token.is(MIToken::lbrace)) - ++BraceDepth; - if (Token.is(MIToken::rbrace)) { - if (!BraceDepth) - return error("extraneous closing brace ('}')"); - --BraceDepth; - } - lex(); - } - // Verify that we closed all of the '{' at the end of a file or a block. - if (!Token.isError() && BraceDepth) - return error("expected '}'"); // FIXME: Report a note that shows '{'. - } while (!Token.isErrorOrEOF()); - return Token.isError(); -} - -bool MIParser::parseBasicBlockLiveins(MachineBasicBlock &MBB) { - assert(Token.is(MIToken::kw_liveins)); - lex(); - if (expectAndConsume(MIToken::colon)) - return true; - if (Token.isNewlineOrEOF()) // Allow an empty list of liveins. - return false; - do { - if (Token.isNot(MIToken::NamedRegister)) - return error("expected a named register"); - unsigned Reg = 0; - if (parseNamedRegister(Reg)) - return true; - lex(); - LaneBitmask Mask = LaneBitmask::getAll(); - if (consumeIfPresent(MIToken::colon)) { - // Parse lane mask. - if (Token.isNot(MIToken::IntegerLiteral) && - Token.isNot(MIToken::HexLiteral)) - return error("expected a lane mask"); - static_assert(sizeof(LaneBitmask::Type) == sizeof(unsigned), - "Use correct get-function for lane mask"); - LaneBitmask::Type V; - if (getUnsigned(V)) - return error("invalid lane mask value"); - Mask = LaneBitmask(V); - lex(); - } - MBB.addLiveIn(Reg, Mask); - } while (consumeIfPresent(MIToken::comma)); - return false; -} - -bool MIParser::parseBasicBlockSuccessors(MachineBasicBlock &MBB) { - assert(Token.is(MIToken::kw_successors)); - lex(); - if (expectAndConsume(MIToken::colon)) - return true; - if (Token.isNewlineOrEOF()) // Allow an empty list of successors. - return false; - do { - if (Token.isNot(MIToken::MachineBasicBlock)) - return error("expected a machine basic block reference"); - MachineBasicBlock *SuccMBB = nullptr; - if (parseMBBReference(SuccMBB)) - return true; - lex(); - unsigned Weight = 0; - if (consumeIfPresent(MIToken::lparen)) { - if (Token.isNot(MIToken::IntegerLiteral) && - Token.isNot(MIToken::HexLiteral)) - return error("expected an integer literal after '('"); - if (getUnsigned(Weight)) - return true; - lex(); - if (expectAndConsume(MIToken::rparen)) - return true; - } - MBB.addSuccessor(SuccMBB, BranchProbability::getRaw(Weight)); - } while (consumeIfPresent(MIToken::comma)); - MBB.normalizeSuccProbs(); - return false; -} - -bool MIParser::parseBasicBlock(MachineBasicBlock &MBB, - MachineBasicBlock *&AddFalthroughFrom) { - // Skip the definition. - assert(Token.is(MIToken::MachineBasicBlockLabel)); - lex(); - if (consumeIfPresent(MIToken::lparen)) { - while (Token.isNot(MIToken::rparen) && !Token.isErrorOrEOF()) - lex(); - consumeIfPresent(MIToken::rparen); - } - consumeIfPresent(MIToken::colon); - - // Parse the liveins and successors. - // N.B: Multiple lists of successors and liveins are allowed and they're - // merged into one. - // Example: - // liveins: %edi - // liveins: %esi - // - // is equivalent to - // liveins: %edi, %esi - bool ExplicitSuccessors = false; - while (true) { - if (Token.is(MIToken::kw_successors)) { - if (parseBasicBlockSuccessors(MBB)) - return true; - ExplicitSuccessors = true; - } else if (Token.is(MIToken::kw_liveins)) { - if (parseBasicBlockLiveins(MBB)) - return true; - } else if (consumeIfPresent(MIToken::Newline)) { - continue; - } else - break; - if (!Token.isNewlineOrEOF()) - return error("expected line break at the end of a list"); - lex(); - } - - // Parse the instructions. - bool IsInBundle = false; - MachineInstr *PrevMI = nullptr; - while (!Token.is(MIToken::MachineBasicBlockLabel) && - !Token.is(MIToken::Eof)) { - if (consumeIfPresent(MIToken::Newline)) - continue; - if (consumeIfPresent(MIToken::rbrace)) { - // The first parsing pass should verify that all closing '}' have an - // opening '{'. - assert(IsInBundle); - IsInBundle = false; - continue; - } - MachineInstr *MI = nullptr; - if (parse(MI)) - return true; - MBB.insert(MBB.end(), MI); - if (IsInBundle) { - PrevMI->setFlag(MachineInstr::BundledSucc); - MI->setFlag(MachineInstr::BundledPred); - } - PrevMI = MI; - if (Token.is(MIToken::lbrace)) { - if (IsInBundle) - return error("nested instruction bundles are not allowed"); - lex(); - // This instruction is the start of the bundle. - MI->setFlag(MachineInstr::BundledSucc); - IsInBundle = true; - if (!Token.is(MIToken::Newline)) - // The next instruction can be on the same line. - continue; - } - assert(Token.isNewlineOrEOF() && "MI is not fully parsed"); - lex(); - } - - // Construct successor list by searching for basic block machine operands. - if (!ExplicitSuccessors) { - SmallVector<MachineBasicBlock*,4> Successors; - bool IsFallthrough; - guessSuccessors(MBB, Successors, IsFallthrough); - for (MachineBasicBlock *Succ : Successors) - MBB.addSuccessor(Succ); - - if (IsFallthrough) { - AddFalthroughFrom = &MBB; - } else { - MBB.normalizeSuccProbs(); - } - } - - return false; -} - -bool MIParser::parseBasicBlocks() { - lex(); - // Skip until the first machine basic block. - while (Token.is(MIToken::Newline)) - lex(); - if (Token.isErrorOrEOF()) - return Token.isError(); - // The first parsing pass should have verified that this token is a MBB label - // in the 'parseBasicBlockDefinitions' method. - assert(Token.is(MIToken::MachineBasicBlockLabel)); - MachineBasicBlock *AddFalthroughFrom = nullptr; - do { - MachineBasicBlock *MBB = nullptr; - if (parseMBBReference(MBB)) - return true; - if (AddFalthroughFrom) { - if (!AddFalthroughFrom->isSuccessor(MBB)) - AddFalthroughFrom->addSuccessor(MBB); - AddFalthroughFrom->normalizeSuccProbs(); - AddFalthroughFrom = nullptr; - } - if (parseBasicBlock(*MBB, AddFalthroughFrom)) - return true; - // The method 'parseBasicBlock' should parse the whole block until the next - // block or the end of file. - assert(Token.is(MIToken::MachineBasicBlockLabel) || Token.is(MIToken::Eof)); - } while (Token.isNot(MIToken::Eof)); - return false; -} - -bool MIParser::parse(MachineInstr *&MI) { - // Parse any register operands before '=' - MachineOperand MO = MachineOperand::CreateImm(0); - SmallVector<ParsedMachineOperand, 8> Operands; - while (Token.isRegister() || Token.isRegisterFlag()) { - auto Loc = Token.location(); - Optional<unsigned> TiedDefIdx; - if (parseRegisterOperand(MO, TiedDefIdx, /*IsDef=*/true)) - return true; - Operands.push_back( - ParsedMachineOperand(MO, Loc, Token.location(), TiedDefIdx)); - if (Token.isNot(MIToken::comma)) - break; - lex(); - } - if (!Operands.empty() && expectAndConsume(MIToken::equal)) - return true; - - unsigned OpCode, Flags = 0; - if (Token.isError() || parseInstruction(OpCode, Flags)) - return true; - - // Parse the remaining machine operands. - while (!Token.isNewlineOrEOF() && Token.isNot(MIToken::kw_pre_instr_symbol) && - Token.isNot(MIToken::kw_post_instr_symbol) && - Token.isNot(MIToken::kw_debug_location) && - Token.isNot(MIToken::coloncolon) && Token.isNot(MIToken::lbrace)) { - auto Loc = Token.location(); - Optional<unsigned> TiedDefIdx; - if (parseMachineOperandAndTargetFlags(MO, TiedDefIdx)) - return true; - if (OpCode == TargetOpcode::DBG_VALUE && MO.isReg()) - MO.setIsDebug(); - Operands.push_back( - ParsedMachineOperand(MO, Loc, Token.location(), TiedDefIdx)); - if (Token.isNewlineOrEOF() || Token.is(MIToken::coloncolon) || - Token.is(MIToken::lbrace)) - break; - if (Token.isNot(MIToken::comma)) - return error("expected ',' before the next machine operand"); - lex(); - } - - MCSymbol *PreInstrSymbol = nullptr; - if (Token.is(MIToken::kw_pre_instr_symbol)) - if (parsePreOrPostInstrSymbol(PreInstrSymbol)) - return true; - MCSymbol *PostInstrSymbol = nullptr; - if (Token.is(MIToken::kw_post_instr_symbol)) - if (parsePreOrPostInstrSymbol(PostInstrSymbol)) - return true; - - DebugLoc DebugLocation; - if (Token.is(MIToken::kw_debug_location)) { - lex(); - MDNode *Node = nullptr; - if (Token.is(MIToken::exclaim)) { - if (parseMDNode(Node)) - return true; - } else if (Token.is(MIToken::md_dilocation)) { - if (parseDILocation(Node)) - return true; - } else - return error("expected a metadata node after 'debug-location'"); - if (!isa<DILocation>(Node)) - return error("referenced metadata is not a DILocation"); - DebugLocation = DebugLoc(Node); - } - - // Parse the machine memory operands. - SmallVector<MachineMemOperand *, 2> MemOperands; - if (Token.is(MIToken::coloncolon)) { - lex(); - while (!Token.isNewlineOrEOF()) { - MachineMemOperand *MemOp = nullptr; - if (parseMachineMemoryOperand(MemOp)) - return true; - MemOperands.push_back(MemOp); - if (Token.isNewlineOrEOF()) - break; - if (Token.isNot(MIToken::comma)) - return error("expected ',' before the next machine memory operand"); - lex(); - } - } - - const auto &MCID = MF.getSubtarget().getInstrInfo()->get(OpCode); - if (!MCID.isVariadic()) { - // FIXME: Move the implicit operand verification to the machine verifier. - if (verifyImplicitOperands(Operands, MCID)) - return true; - } - - // TODO: Check for extraneous machine operands. - MI = MF.CreateMachineInstr(MCID, DebugLocation, /*NoImplicit=*/true); - MI->setFlags(Flags); - for (const auto &Operand : Operands) - MI->addOperand(MF, Operand.Operand); - if (assignRegisterTies(*MI, Operands)) - return true; - if (PreInstrSymbol) - MI->setPreInstrSymbol(MF, PreInstrSymbol); - if (PostInstrSymbol) - MI->setPostInstrSymbol(MF, PostInstrSymbol); - if (!MemOperands.empty()) - MI->setMemRefs(MF, MemOperands); - return false; -} - -bool MIParser::parseStandaloneMBB(MachineBasicBlock *&MBB) { - lex(); - if (Token.isNot(MIToken::MachineBasicBlock)) - return error("expected a machine basic block reference"); - if (parseMBBReference(MBB)) - return true; - lex(); - if (Token.isNot(MIToken::Eof)) - return error( - "expected end of string after the machine basic block reference"); - return false; -} - -bool MIParser::parseStandaloneNamedRegister(unsigned &Reg) { - lex(); - if (Token.isNot(MIToken::NamedRegister)) - return error("expected a named register"); - if (parseNamedRegister(Reg)) - return true; - lex(); - if (Token.isNot(MIToken::Eof)) - return error("expected end of string after the register reference"); - return false; -} - -bool MIParser::parseStandaloneVirtualRegister(VRegInfo *&Info) { - lex(); - if (Token.isNot(MIToken::VirtualRegister)) - return error("expected a virtual register"); - if (parseVirtualRegister(Info)) - return true; - lex(); - if (Token.isNot(MIToken::Eof)) - return error("expected end of string after the register reference"); - return false; -} - -bool MIParser::parseStandaloneRegister(unsigned &Reg) { - lex(); - if (Token.isNot(MIToken::NamedRegister) && - Token.isNot(MIToken::VirtualRegister)) - return error("expected either a named or virtual register"); - - VRegInfo *Info; - if (parseRegister(Reg, Info)) - return true; - - lex(); - if (Token.isNot(MIToken::Eof)) - return error("expected end of string after the register reference"); - return false; -} - -bool MIParser::parseStandaloneStackObject(int &FI) { - lex(); - if (Token.isNot(MIToken::StackObject)) - return error("expected a stack object"); - if (parseStackFrameIndex(FI)) - return true; - if (Token.isNot(MIToken::Eof)) - return error("expected end of string after the stack object reference"); - return false; -} - -bool MIParser::parseStandaloneMDNode(MDNode *&Node) { - lex(); - if (Token.is(MIToken::exclaim)) { - if (parseMDNode(Node)) - return true; - } else if (Token.is(MIToken::md_diexpr)) { - if (parseDIExpression(Node)) - return true; - } else if (Token.is(MIToken::md_dilocation)) { - if (parseDILocation(Node)) - return true; - } else - return error("expected a metadata node"); - if (Token.isNot(MIToken::Eof)) - return error("expected end of string after the metadata node"); - return false; -} - -static const char *printImplicitRegisterFlag(const MachineOperand &MO) { - assert(MO.isImplicit()); - return MO.isDef() ? "implicit-def" : "implicit"; -} - -static std::string getRegisterName(const TargetRegisterInfo *TRI, - unsigned Reg) { - assert(TargetRegisterInfo::isPhysicalRegister(Reg) && "expected phys reg"); - return StringRef(TRI->getName(Reg)).lower(); -} - -/// Return true if the parsed machine operands contain a given machine operand. -static bool isImplicitOperandIn(const MachineOperand &ImplicitOperand, - ArrayRef<ParsedMachineOperand> Operands) { - for (const auto &I : Operands) { - if (ImplicitOperand.isIdenticalTo(I.Operand)) - return true; - } - return false; -} - -bool MIParser::verifyImplicitOperands(ArrayRef<ParsedMachineOperand> Operands, - const MCInstrDesc &MCID) { - if (MCID.isCall()) - // We can't verify call instructions as they can contain arbitrary implicit - // register and register mask operands. - return false; - - // Gather all the expected implicit operands. - SmallVector<MachineOperand, 4> ImplicitOperands; - if (MCID.ImplicitDefs) - for (const MCPhysReg *ImpDefs = MCID.getImplicitDefs(); *ImpDefs; ++ImpDefs) - ImplicitOperands.push_back( - MachineOperand::CreateReg(*ImpDefs, true, true)); - if (MCID.ImplicitUses) - for (const MCPhysReg *ImpUses = MCID.getImplicitUses(); *ImpUses; ++ImpUses) - ImplicitOperands.push_back( - MachineOperand::CreateReg(*ImpUses, false, true)); - - const auto *TRI = MF.getSubtarget().getRegisterInfo(); - assert(TRI && "Expected target register info"); - for (const auto &I : ImplicitOperands) { - if (isImplicitOperandIn(I, Operands)) - continue; - return error(Operands.empty() ? Token.location() : Operands.back().End, - Twine("missing implicit register operand '") + - printImplicitRegisterFlag(I) + " $" + - getRegisterName(TRI, I.getReg()) + "'"); - } - return false; -} - -bool MIParser::parseInstruction(unsigned &OpCode, unsigned &Flags) { - // Allow frame and fast math flags for OPCODE - while (Token.is(MIToken::kw_frame_setup) || - Token.is(MIToken::kw_frame_destroy) || - Token.is(MIToken::kw_nnan) || - Token.is(MIToken::kw_ninf) || - Token.is(MIToken::kw_nsz) || - Token.is(MIToken::kw_arcp) || - Token.is(MIToken::kw_contract) || - Token.is(MIToken::kw_afn) || - Token.is(MIToken::kw_reassoc) || - Token.is(MIToken::kw_nuw) || - Token.is(MIToken::kw_nsw) || - Token.is(MIToken::kw_exact)) { - // Mine frame and fast math flags - if (Token.is(MIToken::kw_frame_setup)) - Flags |= MachineInstr::FrameSetup; - if (Token.is(MIToken::kw_frame_destroy)) - Flags |= MachineInstr::FrameDestroy; - if (Token.is(MIToken::kw_nnan)) - Flags |= MachineInstr::FmNoNans; - if (Token.is(MIToken::kw_ninf)) - Flags |= MachineInstr::FmNoInfs; - if (Token.is(MIToken::kw_nsz)) - Flags |= MachineInstr::FmNsz; - if (Token.is(MIToken::kw_arcp)) - Flags |= MachineInstr::FmArcp; - if (Token.is(MIToken::kw_contract)) - Flags |= MachineInstr::FmContract; - if (Token.is(MIToken::kw_afn)) - Flags |= MachineInstr::FmAfn; - if (Token.is(MIToken::kw_reassoc)) - Flags |= MachineInstr::FmReassoc; - if (Token.is(MIToken::kw_nuw)) - Flags |= MachineInstr::NoUWrap; - if (Token.is(MIToken::kw_nsw)) - Flags |= MachineInstr::NoSWrap; - if (Token.is(MIToken::kw_exact)) - Flags |= MachineInstr::IsExact; - - lex(); - } - if (Token.isNot(MIToken::Identifier)) - return error("expected a machine instruction"); - StringRef InstrName = Token.stringValue(); - if (parseInstrName(InstrName, OpCode)) - return error(Twine("unknown machine instruction name '") + InstrName + "'"); - lex(); - return false; -} - -bool MIParser::parseNamedRegister(unsigned &Reg) { - assert(Token.is(MIToken::NamedRegister) && "Needs NamedRegister token"); - StringRef Name = Token.stringValue(); - if (getRegisterByName(Name, Reg)) - return error(Twine("unknown register name '") + Name + "'"); - return false; -} - -bool MIParser::parseNamedVirtualRegister(VRegInfo *&Info) { - assert(Token.is(MIToken::NamedVirtualRegister) && "Expected NamedVReg token"); - StringRef Name = Token.stringValue(); - // TODO: Check that the VReg name is not the same as a physical register name. - // If it is, then print a warning (when warnings are implemented). - Info = &PFS.getVRegInfoNamed(Name); - return false; -} - -bool MIParser::parseVirtualRegister(VRegInfo *&Info) { - if (Token.is(MIToken::NamedVirtualRegister)) - return parseNamedVirtualRegister(Info); - assert(Token.is(MIToken::VirtualRegister) && "Needs VirtualRegister token"); - unsigned ID; - if (getUnsigned(ID)) - return true; - Info = &PFS.getVRegInfo(ID); - return false; -} - -bool MIParser::parseRegister(unsigned &Reg, VRegInfo *&Info) { - switch (Token.kind()) { - case MIToken::underscore: - Reg = 0; - return false; - case MIToken::NamedRegister: - return parseNamedRegister(Reg); - case MIToken::NamedVirtualRegister: - case MIToken::VirtualRegister: - if (parseVirtualRegister(Info)) - return true; - Reg = Info->VReg; - return false; - // TODO: Parse other register kinds. - default: - llvm_unreachable("The current token should be a register"); - } -} - -bool MIParser::parseRegisterClassOrBank(VRegInfo &RegInfo) { - if (Token.isNot(MIToken::Identifier) && Token.isNot(MIToken::underscore)) - return error("expected '_', register class, or register bank name"); - StringRef::iterator Loc = Token.location(); - StringRef Name = Token.stringValue(); - - // Was it a register class? - auto RCNameI = PFS.Names2RegClasses.find(Name); - if (RCNameI != PFS.Names2RegClasses.end()) { - lex(); - const TargetRegisterClass &RC = *RCNameI->getValue(); - - switch (RegInfo.Kind) { - case VRegInfo::UNKNOWN: - case VRegInfo::NORMAL: - RegInfo.Kind = VRegInfo::NORMAL; - if (RegInfo.Explicit && RegInfo.D.RC != &RC) { - const TargetRegisterInfo &TRI = *MF.getSubtarget().getRegisterInfo(); - return error(Loc, Twine("conflicting register classes, previously: ") + - Twine(TRI.getRegClassName(RegInfo.D.RC))); - } - RegInfo.D.RC = &RC; - RegInfo.Explicit = true; - return false; - - case VRegInfo::GENERIC: - case VRegInfo::REGBANK: - return error(Loc, "register class specification on generic register"); - } - llvm_unreachable("Unexpected register kind"); - } - - // Should be a register bank or a generic register. - const RegisterBank *RegBank = nullptr; - if (Name != "_") { - auto RBNameI = PFS.Names2RegBanks.find(Name); - if (RBNameI == PFS.Names2RegBanks.end()) - return error(Loc, "expected '_', register class, or register bank name"); - RegBank = RBNameI->getValue(); - } - - lex(); - - switch (RegInfo.Kind) { - case VRegInfo::UNKNOWN: - case VRegInfo::GENERIC: - case VRegInfo::REGBANK: - RegInfo.Kind = RegBank ? VRegInfo::REGBANK : VRegInfo::GENERIC; - if (RegInfo.Explicit && RegInfo.D.RegBank != RegBank) - return error(Loc, "conflicting generic register banks"); - RegInfo.D.RegBank = RegBank; - RegInfo.Explicit = true; - return false; - - case VRegInfo::NORMAL: - return error(Loc, "register bank specification on normal register"); - } - llvm_unreachable("Unexpected register kind"); -} - -bool MIParser::parseRegisterFlag(unsigned &Flags) { - const unsigned OldFlags = Flags; - switch (Token.kind()) { - case MIToken::kw_implicit: - Flags |= RegState::Implicit; - break; - case MIToken::kw_implicit_define: - Flags |= RegState::ImplicitDefine; - break; - case MIToken::kw_def: - Flags |= RegState::Define; - break; - case MIToken::kw_dead: - Flags |= RegState::Dead; - break; - case MIToken::kw_killed: - Flags |= RegState::Kill; - break; - case MIToken::kw_undef: - Flags |= RegState::Undef; - break; - case MIToken::kw_internal: - Flags |= RegState::InternalRead; - break; - case MIToken::kw_early_clobber: - Flags |= RegState::EarlyClobber; - break; - case MIToken::kw_debug_use: - Flags |= RegState::Debug; - break; - case MIToken::kw_renamable: - Flags |= RegState::Renamable; - break; - default: - llvm_unreachable("The current token should be a register flag"); - } - if (OldFlags == Flags) - // We know that the same flag is specified more than once when the flags - // weren't modified. - return error("duplicate '" + Token.stringValue() + "' register flag"); - lex(); - return false; -} - -bool MIParser::parseSubRegisterIndex(unsigned &SubReg) { - assert(Token.is(MIToken::dot)); - lex(); - if (Token.isNot(MIToken::Identifier)) - return error("expected a subregister index after '.'"); - auto Name = Token.stringValue(); - SubReg = getSubRegIndex(Name); - if (!SubReg) - return error(Twine("use of unknown subregister index '") + Name + "'"); - lex(); - return false; -} - -bool MIParser::parseRegisterTiedDefIndex(unsigned &TiedDefIdx) { - if (!consumeIfPresent(MIToken::kw_tied_def)) - return true; - if (Token.isNot(MIToken::IntegerLiteral)) - return error("expected an integer literal after 'tied-def'"); - if (getUnsigned(TiedDefIdx)) - return true; - lex(); - if (expectAndConsume(MIToken::rparen)) - return true; - return false; -} - -bool MIParser::assignRegisterTies(MachineInstr &MI, - ArrayRef<ParsedMachineOperand> Operands) { - SmallVector<std::pair<unsigned, unsigned>, 4> TiedRegisterPairs; - for (unsigned I = 0, E = Operands.size(); I != E; ++I) { - if (!Operands[I].TiedDefIdx) - continue; - // The parser ensures that this operand is a register use, so we just have - // to check the tied-def operand. - unsigned DefIdx = Operands[I].TiedDefIdx.getValue(); - if (DefIdx >= E) - return error(Operands[I].Begin, - Twine("use of invalid tied-def operand index '" + - Twine(DefIdx) + "'; instruction has only ") + - Twine(E) + " operands"); - const auto &DefOperand = Operands[DefIdx].Operand; - if (!DefOperand.isReg() || !DefOperand.isDef()) - // FIXME: add note with the def operand. - return error(Operands[I].Begin, - Twine("use of invalid tied-def operand index '") + - Twine(DefIdx) + "'; the operand #" + Twine(DefIdx) + - " isn't a defined register"); - // Check that the tied-def operand wasn't tied elsewhere. - for (const auto &TiedPair : TiedRegisterPairs) { - if (TiedPair.first == DefIdx) - return error(Operands[I].Begin, - Twine("the tied-def operand #") + Twine(DefIdx) + - " is already tied with another register operand"); - } - TiedRegisterPairs.push_back(std::make_pair(DefIdx, I)); - } - // FIXME: Verify that for non INLINEASM instructions, the def and use tied - // indices must be less than tied max. - for (const auto &TiedPair : TiedRegisterPairs) - MI.tieOperands(TiedPair.first, TiedPair.second); - return false; -} - -bool MIParser::parseRegisterOperand(MachineOperand &Dest, - Optional<unsigned> &TiedDefIdx, - bool IsDef) { - unsigned Flags = IsDef ? RegState::Define : 0; - while (Token.isRegisterFlag()) { - if (parseRegisterFlag(Flags)) - return true; - } - if (!Token.isRegister()) - return error("expected a register after register flags"); - unsigned Reg; - VRegInfo *RegInfo; - if (parseRegister(Reg, RegInfo)) - return true; - lex(); - unsigned SubReg = 0; - if (Token.is(MIToken::dot)) { - if (parseSubRegisterIndex(SubReg)) - return true; - if (!TargetRegisterInfo::isVirtualRegister(Reg)) - return error("subregister index expects a virtual register"); - } - if (Token.is(MIToken::colon)) { - if (!TargetRegisterInfo::isVirtualRegister(Reg)) - return error("register class specification expects a virtual register"); - lex(); - if (parseRegisterClassOrBank(*RegInfo)) - return true; - } - MachineRegisterInfo &MRI = MF.getRegInfo(); - if ((Flags & RegState::Define) == 0) { - if (consumeIfPresent(MIToken::lparen)) { - unsigned Idx; - if (!parseRegisterTiedDefIndex(Idx)) - TiedDefIdx = Idx; - else { - // Try a redundant low-level type. - LLT Ty; - if (parseLowLevelType(Token.location(), Ty)) - return error("expected tied-def or low-level type after '('"); - - if (expectAndConsume(MIToken::rparen)) - return true; - - if (MRI.getType(Reg).isValid() && MRI.getType(Reg) != Ty) - return error("inconsistent type for generic virtual register"); - - MRI.setType(Reg, Ty); - } - } - } else if (consumeIfPresent(MIToken::lparen)) { - // Virtual registers may have a tpe with GlobalISel. - if (!TargetRegisterInfo::isVirtualRegister(Reg)) - return error("unexpected type on physical register"); - - LLT Ty; - if (parseLowLevelType(Token.location(), Ty)) - return true; - - if (expectAndConsume(MIToken::rparen)) - return true; - - if (MRI.getType(Reg).isValid() && MRI.getType(Reg) != Ty) - return error("inconsistent type for generic virtual register"); - - MRI.setType(Reg, Ty); - } else if (TargetRegisterInfo::isVirtualRegister(Reg)) { - // Generic virtual registers must have a type. - // If we end up here this means the type hasn't been specified and - // this is bad! - if (RegInfo->Kind == VRegInfo::GENERIC || - RegInfo->Kind == VRegInfo::REGBANK) - return error("generic virtual registers must have a type"); - } - Dest = MachineOperand::CreateReg( - Reg, Flags & RegState::Define, Flags & RegState::Implicit, - Flags & RegState::Kill, Flags & RegState::Dead, Flags & RegState::Undef, - Flags & RegState::EarlyClobber, SubReg, Flags & RegState::Debug, - Flags & RegState::InternalRead, Flags & RegState::Renamable); - - return false; -} - -bool MIParser::parseImmediateOperand(MachineOperand &Dest) { - assert(Token.is(MIToken::IntegerLiteral)); - const APSInt &Int = Token.integerValue(); - if (Int.getMinSignedBits() > 64) - return error("integer literal is too large to be an immediate operand"); - Dest = MachineOperand::CreateImm(Int.getExtValue()); - lex(); - return false; -} - -bool MIParser::parseIRConstant(StringRef::iterator Loc, StringRef StringValue, - const Constant *&C) { - auto Source = StringValue.str(); // The source has to be null terminated. - SMDiagnostic Err; - C = parseConstantValue(Source, Err, *MF.getFunction().getParent(), - &PFS.IRSlots); - if (!C) - return error(Loc + Err.getColumnNo(), Err.getMessage()); - return false; -} - -bool MIParser::parseIRConstant(StringRef::iterator Loc, const Constant *&C) { - if (parseIRConstant(Loc, StringRef(Loc, Token.range().end() - Loc), C)) - return true; - lex(); - return false; -} - -bool MIParser::parseLowLevelType(StringRef::iterator Loc, LLT &Ty) { - if (Token.range().front() == 's' || Token.range().front() == 'p') { - StringRef SizeStr = Token.range().drop_front(); - if (SizeStr.size() == 0 || !llvm::all_of(SizeStr, isdigit)) - return error("expected integers after 's'/'p' type character"); - } - - if (Token.range().front() == 's') { - Ty = LLT::scalar(APSInt(Token.range().drop_front()).getZExtValue()); - lex(); - return false; - } else if (Token.range().front() == 'p') { - const DataLayout &DL = MF.getDataLayout(); - unsigned AS = APSInt(Token.range().drop_front()).getZExtValue(); - Ty = LLT::pointer(AS, DL.getPointerSizeInBits(AS)); - lex(); - return false; - } - - // Now we're looking for a vector. - if (Token.isNot(MIToken::less)) - return error(Loc, - "expected sN, pA, <M x sN>, or <M x pA> for GlobalISel type"); - lex(); - - if (Token.isNot(MIToken::IntegerLiteral)) - return error(Loc, "expected <M x sN> or <M x pA> for vector type"); - uint64_t NumElements = Token.integerValue().getZExtValue(); - lex(); - - if (Token.isNot(MIToken::Identifier) || Token.stringValue() != "x") - return error(Loc, "expected <M x sN> or <M x pA> for vector type"); - lex(); - - if (Token.range().front() != 's' && Token.range().front() != 'p') - return error(Loc, "expected <M x sN> or <M x pA> for vector type"); - StringRef SizeStr = Token.range().drop_front(); - if (SizeStr.size() == 0 || !llvm::all_of(SizeStr, isdigit)) - return error("expected integers after 's'/'p' type character"); - - if (Token.range().front() == 's') - Ty = LLT::scalar(APSInt(Token.range().drop_front()).getZExtValue()); - else if (Token.range().front() == 'p') { - const DataLayout &DL = MF.getDataLayout(); - unsigned AS = APSInt(Token.range().drop_front()).getZExtValue(); - Ty = LLT::pointer(AS, DL.getPointerSizeInBits(AS)); - } else - return error(Loc, "expected <M x sN> or <M x pA> for vector type"); - lex(); - - if (Token.isNot(MIToken::greater)) - return error(Loc, "expected <M x sN> or <M x pA> for vector type"); - lex(); - - Ty = LLT::vector(NumElements, Ty); - return false; -} - -bool MIParser::parseTypedImmediateOperand(MachineOperand &Dest) { - assert(Token.is(MIToken::Identifier)); - StringRef TypeStr = Token.range(); - if (TypeStr.front() != 'i' && TypeStr.front() != 's' && - TypeStr.front() != 'p') - return error( - "a typed immediate operand should start with one of 'i', 's', or 'p'"); - StringRef SizeStr = Token.range().drop_front(); - if (SizeStr.size() == 0 || !llvm::all_of(SizeStr, isdigit)) - return error("expected integers after 'i'/'s'/'p' type character"); - - auto Loc = Token.location(); - lex(); - if (Token.isNot(MIToken::IntegerLiteral)) { - if (Token.isNot(MIToken::Identifier) || - !(Token.range() == "true" || Token.range() == "false")) - return error("expected an integer literal"); - } - const Constant *C = nullptr; - if (parseIRConstant(Loc, C)) - return true; - Dest = MachineOperand::CreateCImm(cast<ConstantInt>(C)); - return false; -} - -bool MIParser::parseFPImmediateOperand(MachineOperand &Dest) { - auto Loc = Token.location(); - lex(); - if (Token.isNot(MIToken::FloatingPointLiteral) && - Token.isNot(MIToken::HexLiteral)) - return error("expected a floating point literal"); - const Constant *C = nullptr; - if (parseIRConstant(Loc, C)) - return true; - Dest = MachineOperand::CreateFPImm(cast<ConstantFP>(C)); - return false; -} - -bool MIParser::getUnsigned(unsigned &Result) { - if (Token.hasIntegerValue()) { - const uint64_t Limit = uint64_t(std::numeric_limits<unsigned>::max()) + 1; - uint64_t Val64 = Token.integerValue().getLimitedValue(Limit); - if (Val64 == Limit) - return error("expected 32-bit integer (too large)"); - Result = Val64; - return false; - } - if (Token.is(MIToken::HexLiteral)) { - APInt A; - if (getHexUint(A)) - return true; - if (A.getBitWidth() > 32) - return error("expected 32-bit integer (too large)"); - Result = A.getZExtValue(); - return false; - } - return true; -} - -bool MIParser::parseMBBReference(MachineBasicBlock *&MBB) { - assert(Token.is(MIToken::MachineBasicBlock) || - Token.is(MIToken::MachineBasicBlockLabel)); - unsigned Number; - if (getUnsigned(Number)) - return true; - auto MBBInfo = PFS.MBBSlots.find(Number); - if (MBBInfo == PFS.MBBSlots.end()) - return error(Twine("use of undefined machine basic block #") + - Twine(Number)); - MBB = MBBInfo->second; - // TODO: Only parse the name if it's a MachineBasicBlockLabel. Deprecate once - // we drop the <irname> from the bb.<id>.<irname> format. - if (!Token.stringValue().empty() && Token.stringValue() != MBB->getName()) - return error(Twine("the name of machine basic block #") + Twine(Number) + - " isn't '" + Token.stringValue() + "'"); - return false; -} - -bool MIParser::parseMBBOperand(MachineOperand &Dest) { - MachineBasicBlock *MBB; - if (parseMBBReference(MBB)) - return true; - Dest = MachineOperand::CreateMBB(MBB); - lex(); - return false; -} - -bool MIParser::parseStackFrameIndex(int &FI) { - assert(Token.is(MIToken::StackObject)); - unsigned ID; - if (getUnsigned(ID)) - return true; - auto ObjectInfo = PFS.StackObjectSlots.find(ID); - if (ObjectInfo == PFS.StackObjectSlots.end()) - return error(Twine("use of undefined stack object '%stack.") + Twine(ID) + - "'"); - StringRef Name; - if (const auto *Alloca = - MF.getFrameInfo().getObjectAllocation(ObjectInfo->second)) - Name = Alloca->getName(); - if (!Token.stringValue().empty() && Token.stringValue() != Name) - return error(Twine("the name of the stack object '%stack.") + Twine(ID) + - "' isn't '" + Token.stringValue() + "'"); - lex(); - FI = ObjectInfo->second; - return false; -} - -bool MIParser::parseStackObjectOperand(MachineOperand &Dest) { - int FI; - if (parseStackFrameIndex(FI)) - return true; - Dest = MachineOperand::CreateFI(FI); - return false; -} - -bool MIParser::parseFixedStackFrameIndex(int &FI) { - assert(Token.is(MIToken::FixedStackObject)); - unsigned ID; - if (getUnsigned(ID)) - return true; - auto ObjectInfo = PFS.FixedStackObjectSlots.find(ID); - if (ObjectInfo == PFS.FixedStackObjectSlots.end()) - return error(Twine("use of undefined fixed stack object '%fixed-stack.") + - Twine(ID) + "'"); - lex(); - FI = ObjectInfo->second; - return false; -} - -bool MIParser::parseFixedStackObjectOperand(MachineOperand &Dest) { - int FI; - if (parseFixedStackFrameIndex(FI)) - return true; - Dest = MachineOperand::CreateFI(FI); - return false; -} - -bool MIParser::parseGlobalValue(GlobalValue *&GV) { - switch (Token.kind()) { - case MIToken::NamedGlobalValue: { - const Module *M = MF.getFunction().getParent(); - GV = M->getNamedValue(Token.stringValue()); - if (!GV) - return error(Twine("use of undefined global value '") + Token.range() + - "'"); - break; - } - case MIToken::GlobalValue: { - unsigned GVIdx; - if (getUnsigned(GVIdx)) - return true; - if (GVIdx >= PFS.IRSlots.GlobalValues.size()) - return error(Twine("use of undefined global value '@") + Twine(GVIdx) + - "'"); - GV = PFS.IRSlots.GlobalValues[GVIdx]; - break; - } - default: - llvm_unreachable("The current token should be a global value"); - } - return false; -} - -bool MIParser::parseGlobalAddressOperand(MachineOperand &Dest) { - GlobalValue *GV = nullptr; - if (parseGlobalValue(GV)) - return true; - lex(); - Dest = MachineOperand::CreateGA(GV, /*Offset=*/0); - if (parseOperandsOffset(Dest)) - return true; - return false; -} - -bool MIParser::parseConstantPoolIndexOperand(MachineOperand &Dest) { - assert(Token.is(MIToken::ConstantPoolItem)); - unsigned ID; - if (getUnsigned(ID)) - return true; - auto ConstantInfo = PFS.ConstantPoolSlots.find(ID); - if (ConstantInfo == PFS.ConstantPoolSlots.end()) - return error("use of undefined constant '%const." + Twine(ID) + "'"); - lex(); - Dest = MachineOperand::CreateCPI(ID, /*Offset=*/0); - if (parseOperandsOffset(Dest)) - return true; - return false; -} - -bool MIParser::parseJumpTableIndexOperand(MachineOperand &Dest) { - assert(Token.is(MIToken::JumpTableIndex)); - unsigned ID; - if (getUnsigned(ID)) - return true; - auto JumpTableEntryInfo = PFS.JumpTableSlots.find(ID); - if (JumpTableEntryInfo == PFS.JumpTableSlots.end()) - return error("use of undefined jump table '%jump-table." + Twine(ID) + "'"); - lex(); - Dest = MachineOperand::CreateJTI(JumpTableEntryInfo->second); - return false; -} - -bool MIParser::parseExternalSymbolOperand(MachineOperand &Dest) { - assert(Token.is(MIToken::ExternalSymbol)); - const char *Symbol = MF.createExternalSymbolName(Token.stringValue()); - lex(); - Dest = MachineOperand::CreateES(Symbol); - if (parseOperandsOffset(Dest)) - return true; - return false; -} - -bool MIParser::parseMCSymbolOperand(MachineOperand &Dest) { - assert(Token.is(MIToken::MCSymbol)); - MCSymbol *Symbol = getOrCreateMCSymbol(Token.stringValue()); - lex(); - Dest = MachineOperand::CreateMCSymbol(Symbol); - if (parseOperandsOffset(Dest)) - return true; - return false; -} - -bool MIParser::parseSubRegisterIndexOperand(MachineOperand &Dest) { - assert(Token.is(MIToken::SubRegisterIndex)); - StringRef Name = Token.stringValue(); - unsigned SubRegIndex = getSubRegIndex(Token.stringValue()); - if (SubRegIndex == 0) - return error(Twine("unknown subregister index '") + Name + "'"); - lex(); - Dest = MachineOperand::CreateImm(SubRegIndex); - return false; -} - -bool MIParser::parseMDNode(MDNode *&Node) { - assert(Token.is(MIToken::exclaim)); - - auto Loc = Token.location(); - lex(); - if (Token.isNot(MIToken::IntegerLiteral) || Token.integerValue().isSigned()) - return error("expected metadata id after '!'"); - unsigned ID; - if (getUnsigned(ID)) - return true; - auto NodeInfo = PFS.IRSlots.MetadataNodes.find(ID); - if (NodeInfo == PFS.IRSlots.MetadataNodes.end()) - return error(Loc, "use of undefined metadata '!" + Twine(ID) + "'"); - lex(); - Node = NodeInfo->second.get(); - return false; -} - -bool MIParser::parseDIExpression(MDNode *&Expr) { - assert(Token.is(MIToken::md_diexpr)); - lex(); - - // FIXME: Share this parsing with the IL parser. - SmallVector<uint64_t, 8> Elements; - - if (expectAndConsume(MIToken::lparen)) - return true; - - if (Token.isNot(MIToken::rparen)) { - do { - if (Token.is(MIToken::Identifier)) { - if (unsigned Op = dwarf::getOperationEncoding(Token.stringValue())) { - lex(); - Elements.push_back(Op); - continue; - } - return error(Twine("invalid DWARF op '") + Token.stringValue() + "'"); - } - - if (Token.isNot(MIToken::IntegerLiteral) || - Token.integerValue().isSigned()) - return error("expected unsigned integer"); - - auto &U = Token.integerValue(); - if (U.ugt(UINT64_MAX)) - return error("element too large, limit is " + Twine(UINT64_MAX)); - Elements.push_back(U.getZExtValue()); - lex(); - - } while (consumeIfPresent(MIToken::comma)); - } - - if (expectAndConsume(MIToken::rparen)) - return true; - - Expr = DIExpression::get(MF.getFunction().getContext(), Elements); - return false; -} - -bool MIParser::parseDILocation(MDNode *&Loc) { - assert(Token.is(MIToken::md_dilocation)); - lex(); - - bool HaveLine = false; - unsigned Line = 0; - unsigned Column = 0; - MDNode *Scope = nullptr; - MDNode *InlinedAt = nullptr; - bool ImplicitCode = false; - - if (expectAndConsume(MIToken::lparen)) - return true; - - if (Token.isNot(MIToken::rparen)) { - do { - if (Token.is(MIToken::Identifier)) { - if (Token.stringValue() == "line") { - lex(); - if (expectAndConsume(MIToken::colon)) - return true; - if (Token.isNot(MIToken::IntegerLiteral) || - Token.integerValue().isSigned()) - return error("expected unsigned integer"); - Line = Token.integerValue().getZExtValue(); - HaveLine = true; - lex(); - continue; - } - if (Token.stringValue() == "column") { - lex(); - if (expectAndConsume(MIToken::colon)) - return true; - if (Token.isNot(MIToken::IntegerLiteral) || - Token.integerValue().isSigned()) - return error("expected unsigned integer"); - Column = Token.integerValue().getZExtValue(); - lex(); - continue; - } - if (Token.stringValue() == "scope") { - lex(); - if (expectAndConsume(MIToken::colon)) - return true; - if (parseMDNode(Scope)) - return error("expected metadata node"); - if (!isa<DIScope>(Scope)) - return error("expected DIScope node"); - continue; - } - if (Token.stringValue() == "inlinedAt") { - lex(); - if (expectAndConsume(MIToken::colon)) - return true; - if (Token.is(MIToken::exclaim)) { - if (parseMDNode(InlinedAt)) - return true; - } else if (Token.is(MIToken::md_dilocation)) { - if (parseDILocation(InlinedAt)) - return true; - } else - return error("expected metadata node"); - if (!isa<DILocation>(InlinedAt)) - return error("expected DILocation node"); - continue; - } - if (Token.stringValue() == "isImplicitCode") { - lex(); - if (expectAndConsume(MIToken::colon)) - return true; - if (!Token.is(MIToken::Identifier)) - return error("expected true/false"); - // As far as I can see, we don't have any existing need for parsing - // true/false in MIR yet. Do it ad-hoc until there's something else - // that needs it. - if (Token.stringValue() == "true") - ImplicitCode = true; - else if (Token.stringValue() == "false") - ImplicitCode = false; - else - return error("expected true/false"); - lex(); - continue; - } - } - return error(Twine("invalid DILocation argument '") + - Token.stringValue() + "'"); - } while (consumeIfPresent(MIToken::comma)); - } - - if (expectAndConsume(MIToken::rparen)) - return true; - - if (!HaveLine) - return error("DILocation requires line number"); - if (!Scope) - return error("DILocation requires a scope"); - - Loc = DILocation::get(MF.getFunction().getContext(), Line, Column, Scope, - InlinedAt, ImplicitCode); - return false; -} - -bool MIParser::parseMetadataOperand(MachineOperand &Dest) { - MDNode *Node = nullptr; - if (Token.is(MIToken::exclaim)) { - if (parseMDNode(Node)) - return true; - } else if (Token.is(MIToken::md_diexpr)) { - if (parseDIExpression(Node)) - return true; - } - Dest = MachineOperand::CreateMetadata(Node); - return false; -} - -bool MIParser::parseCFIOffset(int &Offset) { - if (Token.isNot(MIToken::IntegerLiteral)) - return error("expected a cfi offset"); - if (Token.integerValue().getMinSignedBits() > 32) - return error("expected a 32 bit integer (the cfi offset is too large)"); - Offset = (int)Token.integerValue().getExtValue(); - lex(); - return false; -} - -bool MIParser::parseCFIRegister(unsigned &Reg) { - if (Token.isNot(MIToken::NamedRegister)) - return error("expected a cfi register"); - unsigned LLVMReg; - if (parseNamedRegister(LLVMReg)) - return true; - const auto *TRI = MF.getSubtarget().getRegisterInfo(); - assert(TRI && "Expected target register info"); - int DwarfReg = TRI->getDwarfRegNum(LLVMReg, true); - if (DwarfReg < 0) - return error("invalid DWARF register"); - Reg = (unsigned)DwarfReg; - lex(); - return false; -} - -bool MIParser::parseCFIEscapeValues(std::string &Values) { - do { - if (Token.isNot(MIToken::HexLiteral)) - return error("expected a hexadecimal literal"); - unsigned Value; - if (getUnsigned(Value)) - return true; - if (Value > UINT8_MAX) - return error("expected a 8-bit integer (too large)"); - Values.push_back(static_cast<uint8_t>(Value)); - lex(); - } while (consumeIfPresent(MIToken::comma)); - return false; -} - -bool MIParser::parseCFIOperand(MachineOperand &Dest) { - auto Kind = Token.kind(); - lex(); - int Offset; - unsigned Reg; - unsigned CFIIndex; - switch (Kind) { - case MIToken::kw_cfi_same_value: - if (parseCFIRegister(Reg)) - return true; - CFIIndex = MF.addFrameInst(MCCFIInstruction::createSameValue(nullptr, Reg)); - break; - case MIToken::kw_cfi_offset: - if (parseCFIRegister(Reg) || expectAndConsume(MIToken::comma) || - parseCFIOffset(Offset)) - return true; - CFIIndex = - MF.addFrameInst(MCCFIInstruction::createOffset(nullptr, Reg, Offset)); - break; - case MIToken::kw_cfi_rel_offset: - if (parseCFIRegister(Reg) || expectAndConsume(MIToken::comma) || - parseCFIOffset(Offset)) - return true; - CFIIndex = MF.addFrameInst( - MCCFIInstruction::createRelOffset(nullptr, Reg, Offset)); - break; - case MIToken::kw_cfi_def_cfa_register: - if (parseCFIRegister(Reg)) - return true; - CFIIndex = - MF.addFrameInst(MCCFIInstruction::createDefCfaRegister(nullptr, Reg)); - break; - case MIToken::kw_cfi_def_cfa_offset: - if (parseCFIOffset(Offset)) - return true; - // NB: MCCFIInstruction::createDefCfaOffset negates the offset. - CFIIndex = MF.addFrameInst( - MCCFIInstruction::createDefCfaOffset(nullptr, -Offset)); - break; - case MIToken::kw_cfi_adjust_cfa_offset: - if (parseCFIOffset(Offset)) - return true; - CFIIndex = MF.addFrameInst( - MCCFIInstruction::createAdjustCfaOffset(nullptr, Offset)); - break; - case MIToken::kw_cfi_def_cfa: - if (parseCFIRegister(Reg) || expectAndConsume(MIToken::comma) || - parseCFIOffset(Offset)) - return true; - // NB: MCCFIInstruction::createDefCfa negates the offset. - CFIIndex = - MF.addFrameInst(MCCFIInstruction::createDefCfa(nullptr, Reg, -Offset)); - break; - case MIToken::kw_cfi_remember_state: - CFIIndex = MF.addFrameInst(MCCFIInstruction::createRememberState(nullptr)); - break; - case MIToken::kw_cfi_restore: - if (parseCFIRegister(Reg)) - return true; - CFIIndex = MF.addFrameInst(MCCFIInstruction::createRestore(nullptr, Reg)); - break; - case MIToken::kw_cfi_restore_state: - CFIIndex = MF.addFrameInst(MCCFIInstruction::createRestoreState(nullptr)); - break; - case MIToken::kw_cfi_undefined: - if (parseCFIRegister(Reg)) - return true; - CFIIndex = MF.addFrameInst(MCCFIInstruction::createUndefined(nullptr, Reg)); - break; - case MIToken::kw_cfi_register: { - unsigned Reg2; - if (parseCFIRegister(Reg) || expectAndConsume(MIToken::comma) || - parseCFIRegister(Reg2)) - return true; - - CFIIndex = - MF.addFrameInst(MCCFIInstruction::createRegister(nullptr, Reg, Reg2)); - break; - } - case MIToken::kw_cfi_window_save: - CFIIndex = MF.addFrameInst(MCCFIInstruction::createWindowSave(nullptr)); - break; - case MIToken::kw_cfi_aarch64_negate_ra_sign_state: - CFIIndex = MF.addFrameInst(MCCFIInstruction::createNegateRAState(nullptr)); - break; - case MIToken::kw_cfi_escape: { - std::string Values; - if (parseCFIEscapeValues(Values)) - return true; - CFIIndex = MF.addFrameInst(MCCFIInstruction::createEscape(nullptr, Values)); - break; - } - default: - // TODO: Parse the other CFI operands. - llvm_unreachable("The current token should be a cfi operand"); - } - Dest = MachineOperand::CreateCFIIndex(CFIIndex); - return false; -} - -bool MIParser::parseIRBlock(BasicBlock *&BB, const Function &F) { - switch (Token.kind()) { - case MIToken::NamedIRBlock: { - BB = dyn_cast_or_null<BasicBlock>( - F.getValueSymbolTable()->lookup(Token.stringValue())); - if (!BB) - return error(Twine("use of undefined IR block '") + Token.range() + "'"); - break; - } - case MIToken::IRBlock: { - unsigned SlotNumber = 0; - if (getUnsigned(SlotNumber)) - return true; - BB = const_cast<BasicBlock *>(getIRBlock(SlotNumber, F)); - if (!BB) - return error(Twine("use of undefined IR block '%ir-block.") + - Twine(SlotNumber) + "'"); - break; - } - default: - llvm_unreachable("The current token should be an IR block reference"); - } - return false; -} - -bool MIParser::parseBlockAddressOperand(MachineOperand &Dest) { - assert(Token.is(MIToken::kw_blockaddress)); - lex(); - if (expectAndConsume(MIToken::lparen)) - return true; - if (Token.isNot(MIToken::GlobalValue) && - Token.isNot(MIToken::NamedGlobalValue)) - return error("expected a global value"); - GlobalValue *GV = nullptr; - if (parseGlobalValue(GV)) - return true; - auto *F = dyn_cast<Function>(GV); - if (!F) - return error("expected an IR function reference"); - lex(); - if (expectAndConsume(MIToken::comma)) - return true; - BasicBlock *BB = nullptr; - if (Token.isNot(MIToken::IRBlock) && Token.isNot(MIToken::NamedIRBlock)) - return error("expected an IR block reference"); - if (parseIRBlock(BB, *F)) - return true; - lex(); - if (expectAndConsume(MIToken::rparen)) - return true; - Dest = MachineOperand::CreateBA(BlockAddress::get(F, BB), /*Offset=*/0); - if (parseOperandsOffset(Dest)) - return true; - return false; -} - -bool MIParser::parseIntrinsicOperand(MachineOperand &Dest) { - assert(Token.is(MIToken::kw_intrinsic)); - lex(); - if (expectAndConsume(MIToken::lparen)) - return error("expected syntax intrinsic(@llvm.whatever)"); - - if (Token.isNot(MIToken::NamedGlobalValue)) - return error("expected syntax intrinsic(@llvm.whatever)"); - - std::string Name = Token.stringValue(); - lex(); - - if (expectAndConsume(MIToken::rparen)) - return error("expected ')' to terminate intrinsic name"); - - // Find out what intrinsic we're dealing with, first try the global namespace - // and then the target's private intrinsics if that fails. - const TargetIntrinsicInfo *TII = MF.getTarget().getIntrinsicInfo(); - Intrinsic::ID ID = Function::lookupIntrinsicID(Name); - if (ID == Intrinsic::not_intrinsic && TII) - ID = static_cast<Intrinsic::ID>(TII->lookupName(Name)); - - if (ID == Intrinsic::not_intrinsic) - return error("unknown intrinsic name"); - Dest = MachineOperand::CreateIntrinsicID(ID); - - return false; -} - -bool MIParser::parsePredicateOperand(MachineOperand &Dest) { - assert(Token.is(MIToken::kw_intpred) || Token.is(MIToken::kw_floatpred)); - bool IsFloat = Token.is(MIToken::kw_floatpred); - lex(); - - if (expectAndConsume(MIToken::lparen)) - return error("expected syntax intpred(whatever) or floatpred(whatever"); - - if (Token.isNot(MIToken::Identifier)) - return error("whatever"); - - CmpInst::Predicate Pred; - if (IsFloat) { - Pred = StringSwitch<CmpInst::Predicate>(Token.stringValue()) - .Case("false", CmpInst::FCMP_FALSE) - .Case("oeq", CmpInst::FCMP_OEQ) - .Case("ogt", CmpInst::FCMP_OGT) - .Case("oge", CmpInst::FCMP_OGE) - .Case("olt", CmpInst::FCMP_OLT) - .Case("ole", CmpInst::FCMP_OLE) - .Case("one", CmpInst::FCMP_ONE) - .Case("ord", CmpInst::FCMP_ORD) - .Case("uno", CmpInst::FCMP_UNO) - .Case("ueq", CmpInst::FCMP_UEQ) - .Case("ugt", CmpInst::FCMP_UGT) - .Case("uge", CmpInst::FCMP_UGE) - .Case("ult", CmpInst::FCMP_ULT) - .Case("ule", CmpInst::FCMP_ULE) - .Case("une", CmpInst::FCMP_UNE) - .Case("true", CmpInst::FCMP_TRUE) - .Default(CmpInst::BAD_FCMP_PREDICATE); - if (!CmpInst::isFPPredicate(Pred)) - return error("invalid floating-point predicate"); - } else { - Pred = StringSwitch<CmpInst::Predicate>(Token.stringValue()) - .Case("eq", CmpInst::ICMP_EQ) - .Case("ne", CmpInst::ICMP_NE) - .Case("sgt", CmpInst::ICMP_SGT) - .Case("sge", CmpInst::ICMP_SGE) - .Case("slt", CmpInst::ICMP_SLT) - .Case("sle", CmpInst::ICMP_SLE) - .Case("ugt", CmpInst::ICMP_UGT) - .Case("uge", CmpInst::ICMP_UGE) - .Case("ult", CmpInst::ICMP_ULT) - .Case("ule", CmpInst::ICMP_ULE) - .Default(CmpInst::BAD_ICMP_PREDICATE); - if (!CmpInst::isIntPredicate(Pred)) - return error("invalid integer predicate"); - } - - lex(); - Dest = MachineOperand::CreatePredicate(Pred); - if (expectAndConsume(MIToken::rparen)) - return error("predicate should be terminated by ')'."); - - return false; -} - -bool MIParser::parseTargetIndexOperand(MachineOperand &Dest) { - assert(Token.is(MIToken::kw_target_index)); - lex(); - if (expectAndConsume(MIToken::lparen)) - return true; - if (Token.isNot(MIToken::Identifier)) - return error("expected the name of the target index"); - int Index = 0; - if (getTargetIndex(Token.stringValue(), Index)) - return error("use of undefined target index '" + Token.stringValue() + "'"); - lex(); - if (expectAndConsume(MIToken::rparen)) - return true; - Dest = MachineOperand::CreateTargetIndex(unsigned(Index), /*Offset=*/0); - if (parseOperandsOffset(Dest)) - return true; - return false; -} - -bool MIParser::parseCustomRegisterMaskOperand(MachineOperand &Dest) { - assert(Token.stringValue() == "CustomRegMask" && "Expected a custom RegMask"); - lex(); - if (expectAndConsume(MIToken::lparen)) - return true; - - uint32_t *Mask = MF.allocateRegMask(); - while (true) { - if (Token.isNot(MIToken::NamedRegister)) - return error("expected a named register"); - unsigned Reg; - if (parseNamedRegister(Reg)) - return true; - lex(); - Mask[Reg / 32] |= 1U << (Reg % 32); - // TODO: Report an error if the same register is used more than once. - if (Token.isNot(MIToken::comma)) - break; - lex(); - } - - if (expectAndConsume(MIToken::rparen)) - return true; - Dest = MachineOperand::CreateRegMask(Mask); - return false; -} - -bool MIParser::parseLiveoutRegisterMaskOperand(MachineOperand &Dest) { - assert(Token.is(MIToken::kw_liveout)); - uint32_t *Mask = MF.allocateRegMask(); - lex(); - if (expectAndConsume(MIToken::lparen)) - return true; - while (true) { - if (Token.isNot(MIToken::NamedRegister)) - return error("expected a named register"); - unsigned Reg; - if (parseNamedRegister(Reg)) - return true; - lex(); - Mask[Reg / 32] |= 1U << (Reg % 32); - // TODO: Report an error if the same register is used more than once. - if (Token.isNot(MIToken::comma)) - break; - lex(); - } - if (expectAndConsume(MIToken::rparen)) - return true; - Dest = MachineOperand::CreateRegLiveOut(Mask); - return false; -} - -bool MIParser::parseMachineOperand(MachineOperand &Dest, - Optional<unsigned> &TiedDefIdx) { - switch (Token.kind()) { - case MIToken::kw_implicit: - case MIToken::kw_implicit_define: - case MIToken::kw_def: - case MIToken::kw_dead: - case MIToken::kw_killed: - case MIToken::kw_undef: - case MIToken::kw_internal: - case MIToken::kw_early_clobber: - case MIToken::kw_debug_use: - case MIToken::kw_renamable: - case MIToken::underscore: - case MIToken::NamedRegister: - case MIToken::VirtualRegister: - case MIToken::NamedVirtualRegister: - return parseRegisterOperand(Dest, TiedDefIdx); - case MIToken::IntegerLiteral: - return parseImmediateOperand(Dest); - case MIToken::kw_half: - case MIToken::kw_float: - case MIToken::kw_double: - case MIToken::kw_x86_fp80: - case MIToken::kw_fp128: - case MIToken::kw_ppc_fp128: - return parseFPImmediateOperand(Dest); - case MIToken::MachineBasicBlock: - return parseMBBOperand(Dest); - case MIToken::StackObject: - return parseStackObjectOperand(Dest); - case MIToken::FixedStackObject: - return parseFixedStackObjectOperand(Dest); - case MIToken::GlobalValue: - case MIToken::NamedGlobalValue: - return parseGlobalAddressOperand(Dest); - case MIToken::ConstantPoolItem: - return parseConstantPoolIndexOperand(Dest); - case MIToken::JumpTableIndex: - return parseJumpTableIndexOperand(Dest); - case MIToken::ExternalSymbol: - return parseExternalSymbolOperand(Dest); - case MIToken::MCSymbol: - return parseMCSymbolOperand(Dest); - case MIToken::SubRegisterIndex: - return parseSubRegisterIndexOperand(Dest); - case MIToken::md_diexpr: - case MIToken::exclaim: - return parseMetadataOperand(Dest); - case MIToken::kw_cfi_same_value: - case MIToken::kw_cfi_offset: - case MIToken::kw_cfi_rel_offset: - case MIToken::kw_cfi_def_cfa_register: - case MIToken::kw_cfi_def_cfa_offset: - case MIToken::kw_cfi_adjust_cfa_offset: - case MIToken::kw_cfi_escape: - case MIToken::kw_cfi_def_cfa: - case MIToken::kw_cfi_register: - case MIToken::kw_cfi_remember_state: - case MIToken::kw_cfi_restore: - case MIToken::kw_cfi_restore_state: - case MIToken::kw_cfi_undefined: - case MIToken::kw_cfi_window_save: - case MIToken::kw_cfi_aarch64_negate_ra_sign_state: - return parseCFIOperand(Dest); - case MIToken::kw_blockaddress: - return parseBlockAddressOperand(Dest); - case MIToken::kw_intrinsic: - return parseIntrinsicOperand(Dest); - case MIToken::kw_target_index: - return parseTargetIndexOperand(Dest); - case MIToken::kw_liveout: - return parseLiveoutRegisterMaskOperand(Dest); - case MIToken::kw_floatpred: - case MIToken::kw_intpred: - return parsePredicateOperand(Dest); - case MIToken::Error: - return true; - case MIToken::Identifier: - if (const auto *RegMask = getRegMask(Token.stringValue())) { - Dest = MachineOperand::CreateRegMask(RegMask); - lex(); - break; - } else if (Token.stringValue() == "CustomRegMask") { - return parseCustomRegisterMaskOperand(Dest); - } else - return parseTypedImmediateOperand(Dest); - default: - // FIXME: Parse the MCSymbol machine operand. - return error("expected a machine operand"); - } - return false; -} - -bool MIParser::parseMachineOperandAndTargetFlags( - MachineOperand &Dest, Optional<unsigned> &TiedDefIdx) { - unsigned TF = 0; - bool HasTargetFlags = false; - if (Token.is(MIToken::kw_target_flags)) { - HasTargetFlags = true; - lex(); - if (expectAndConsume(MIToken::lparen)) - return true; - if (Token.isNot(MIToken::Identifier)) - return error("expected the name of the target flag"); - if (getDirectTargetFlag(Token.stringValue(), TF)) { - if (getBitmaskTargetFlag(Token.stringValue(), TF)) - return error("use of undefined target flag '" + Token.stringValue() + - "'"); - } - lex(); - while (Token.is(MIToken::comma)) { - lex(); - if (Token.isNot(MIToken::Identifier)) - return error("expected the name of the target flag"); - unsigned BitFlag = 0; - if (getBitmaskTargetFlag(Token.stringValue(), BitFlag)) - return error("use of undefined target flag '" + Token.stringValue() + - "'"); - // TODO: Report an error when using a duplicate bit target flag. - TF |= BitFlag; - lex(); - } - if (expectAndConsume(MIToken::rparen)) - return true; - } - auto Loc = Token.location(); - if (parseMachineOperand(Dest, TiedDefIdx)) - return true; - if (!HasTargetFlags) - return false; - if (Dest.isReg()) - return error(Loc, "register operands can't have target flags"); - Dest.setTargetFlags(TF); - return false; -} - -bool MIParser::parseOffset(int64_t &Offset) { - if (Token.isNot(MIToken::plus) && Token.isNot(MIToken::minus)) - return false; - StringRef Sign = Token.range(); - bool IsNegative = Token.is(MIToken::minus); - lex(); - if (Token.isNot(MIToken::IntegerLiteral)) - return error("expected an integer literal after '" + Sign + "'"); - if (Token.integerValue().getMinSignedBits() > 64) - return error("expected 64-bit integer (too large)"); - Offset = Token.integerValue().getExtValue(); - if (IsNegative) - Offset = -Offset; - lex(); - return false; -} - -bool MIParser::parseAlignment(unsigned &Alignment) { - assert(Token.is(MIToken::kw_align)); - lex(); - if (Token.isNot(MIToken::IntegerLiteral) || Token.integerValue().isSigned()) - return error("expected an integer literal after 'align'"); - if (getUnsigned(Alignment)) - return true; - lex(); - return false; -} - -bool MIParser::parseAddrspace(unsigned &Addrspace) { - assert(Token.is(MIToken::kw_addrspace)); - lex(); - if (Token.isNot(MIToken::IntegerLiteral) || Token.integerValue().isSigned()) - return error("expected an integer literal after 'addrspace'"); - if (getUnsigned(Addrspace)) - return true; - lex(); - return false; -} - -bool MIParser::parseOperandsOffset(MachineOperand &Op) { - int64_t Offset = 0; - if (parseOffset(Offset)) - return true; - Op.setOffset(Offset); - return false; -} - -bool MIParser::parseIRValue(const Value *&V) { - switch (Token.kind()) { - case MIToken::NamedIRValue: { - V = MF.getFunction().getValueSymbolTable()->lookup(Token.stringValue()); - break; - } - case MIToken::IRValue: { - unsigned SlotNumber = 0; - if (getUnsigned(SlotNumber)) - return true; - V = getIRValue(SlotNumber); - break; - } - case MIToken::NamedGlobalValue: - case MIToken::GlobalValue: { - GlobalValue *GV = nullptr; - if (parseGlobalValue(GV)) - return true; - V = GV; - break; - } - case MIToken::QuotedIRValue: { - const Constant *C = nullptr; - if (parseIRConstant(Token.location(), Token.stringValue(), C)) - return true; - V = C; - break; - } - default: - llvm_unreachable("The current token should be an IR block reference"); - } - if (!V) - return error(Twine("use of undefined IR value '") + Token.range() + "'"); - return false; -} - -bool MIParser::getUint64(uint64_t &Result) { - if (Token.hasIntegerValue()) { - if (Token.integerValue().getActiveBits() > 64) - return error("expected 64-bit integer (too large)"); - Result = Token.integerValue().getZExtValue(); - return false; - } - if (Token.is(MIToken::HexLiteral)) { - APInt A; - if (getHexUint(A)) - return true; - if (A.getBitWidth() > 64) - return error("expected 64-bit integer (too large)"); - Result = A.getZExtValue(); - return false; - } - return true; -} - -bool MIParser::getHexUint(APInt &Result) { - assert(Token.is(MIToken::HexLiteral)); - StringRef S = Token.range(); - assert(S[0] == '0' && tolower(S[1]) == 'x'); - // This could be a floating point literal with a special prefix. - if (!isxdigit(S[2])) - return true; - StringRef V = S.substr(2); - APInt A(V.size()*4, V, 16); - - // If A is 0, then A.getActiveBits() is 0. This isn't a valid bitwidth. Make - // sure it isn't the case before constructing result. - unsigned NumBits = (A == 0) ? 32 : A.getActiveBits(); - Result = APInt(NumBits, ArrayRef<uint64_t>(A.getRawData(), A.getNumWords())); - return false; -} - -bool MIParser::parseMemoryOperandFlag(MachineMemOperand::Flags &Flags) { - const auto OldFlags = Flags; - switch (Token.kind()) { - case MIToken::kw_volatile: - Flags |= MachineMemOperand::MOVolatile; - break; - case MIToken::kw_non_temporal: - Flags |= MachineMemOperand::MONonTemporal; - break; - case MIToken::kw_dereferenceable: - Flags |= MachineMemOperand::MODereferenceable; - break; - case MIToken::kw_invariant: - Flags |= MachineMemOperand::MOInvariant; - break; - case MIToken::StringConstant: { - MachineMemOperand::Flags TF; - if (getMMOTargetFlag(Token.stringValue(), TF)) - return error("use of undefined target MMO flag '" + Token.stringValue() + - "'"); - Flags |= TF; - break; - } - default: - llvm_unreachable("The current token should be a memory operand flag"); - } - if (OldFlags == Flags) - // We know that the same flag is specified more than once when the flags - // weren't modified. - return error("duplicate '" + Token.stringValue() + "' memory operand flag"); - lex(); - return false; -} - -bool MIParser::parseMemoryPseudoSourceValue(const PseudoSourceValue *&PSV) { - switch (Token.kind()) { - case MIToken::kw_stack: - PSV = MF.getPSVManager().getStack(); - break; - case MIToken::kw_got: - PSV = MF.getPSVManager().getGOT(); - break; - case MIToken::kw_jump_table: - PSV = MF.getPSVManager().getJumpTable(); - break; - case MIToken::kw_constant_pool: - PSV = MF.getPSVManager().getConstantPool(); - break; - case MIToken::FixedStackObject: { - int FI; - if (parseFixedStackFrameIndex(FI)) - return true; - PSV = MF.getPSVManager().getFixedStack(FI); - // The token was already consumed, so use return here instead of break. - return false; - } - case MIToken::StackObject: { - int FI; - if (parseStackFrameIndex(FI)) - return true; - PSV = MF.getPSVManager().getFixedStack(FI); - // The token was already consumed, so use return here instead of break. - return false; - } - case MIToken::kw_call_entry: - lex(); - switch (Token.kind()) { - case MIToken::GlobalValue: - case MIToken::NamedGlobalValue: { - GlobalValue *GV = nullptr; - if (parseGlobalValue(GV)) - return true; - PSV = MF.getPSVManager().getGlobalValueCallEntry(GV); - break; - } - case MIToken::ExternalSymbol: - PSV = MF.getPSVManager().getExternalSymbolCallEntry( - MF.createExternalSymbolName(Token.stringValue())); - break; - default: - return error( - "expected a global value or an external symbol after 'call-entry'"); - } - break; - default: - llvm_unreachable("The current token should be pseudo source value"); - } - lex(); - return false; -} - -bool MIParser::parseMachinePointerInfo(MachinePointerInfo &Dest) { - if (Token.is(MIToken::kw_constant_pool) || Token.is(MIToken::kw_stack) || - Token.is(MIToken::kw_got) || Token.is(MIToken::kw_jump_table) || - Token.is(MIToken::FixedStackObject) || Token.is(MIToken::StackObject) || - Token.is(MIToken::kw_call_entry)) { - const PseudoSourceValue *PSV = nullptr; - if (parseMemoryPseudoSourceValue(PSV)) - return true; - int64_t Offset = 0; - if (parseOffset(Offset)) - return true; - Dest = MachinePointerInfo(PSV, Offset); - return false; - } - if (Token.isNot(MIToken::NamedIRValue) && Token.isNot(MIToken::IRValue) && - Token.isNot(MIToken::GlobalValue) && - Token.isNot(MIToken::NamedGlobalValue) && - Token.isNot(MIToken::QuotedIRValue)) - return error("expected an IR value reference"); - const Value *V = nullptr; - if (parseIRValue(V)) - return true; - if (!V->getType()->isPointerTy()) - return error("expected a pointer IR value"); - lex(); - int64_t Offset = 0; - if (parseOffset(Offset)) - return true; - Dest = MachinePointerInfo(V, Offset); - return false; -} - -bool MIParser::parseOptionalScope(LLVMContext &Context, - SyncScope::ID &SSID) { - SSID = SyncScope::System; - if (Token.is(MIToken::Identifier) && Token.stringValue() == "syncscope") { - lex(); - if (expectAndConsume(MIToken::lparen)) - return error("expected '(' in syncscope"); - - std::string SSN; - if (parseStringConstant(SSN)) - return true; - - SSID = Context.getOrInsertSyncScopeID(SSN); - if (expectAndConsume(MIToken::rparen)) - return error("expected ')' in syncscope"); - } - - return false; -} - -bool MIParser::parseOptionalAtomicOrdering(AtomicOrdering &Order) { - Order = AtomicOrdering::NotAtomic; - if (Token.isNot(MIToken::Identifier)) - return false; - - Order = StringSwitch<AtomicOrdering>(Token.stringValue()) - .Case("unordered", AtomicOrdering::Unordered) - .Case("monotonic", AtomicOrdering::Monotonic) - .Case("acquire", AtomicOrdering::Acquire) - .Case("release", AtomicOrdering::Release) - .Case("acq_rel", AtomicOrdering::AcquireRelease) - .Case("seq_cst", AtomicOrdering::SequentiallyConsistent) - .Default(AtomicOrdering::NotAtomic); - - if (Order != AtomicOrdering::NotAtomic) { - lex(); - return false; - } - - return error("expected an atomic scope, ordering or a size specification"); -} - -bool MIParser::parseMachineMemoryOperand(MachineMemOperand *&Dest) { - if (expectAndConsume(MIToken::lparen)) - return true; - MachineMemOperand::Flags Flags = MachineMemOperand::MONone; - while (Token.isMemoryOperandFlag()) { - if (parseMemoryOperandFlag(Flags)) - return true; - } - if (Token.isNot(MIToken::Identifier) || - (Token.stringValue() != "load" && Token.stringValue() != "store")) - return error("expected 'load' or 'store' memory operation"); - if (Token.stringValue() == "load") - Flags |= MachineMemOperand::MOLoad; - else - Flags |= MachineMemOperand::MOStore; - lex(); - - // Optional 'store' for operands that both load and store. - if (Token.is(MIToken::Identifier) && Token.stringValue() == "store") { - Flags |= MachineMemOperand::MOStore; - lex(); - } - - // Optional synchronization scope. - SyncScope::ID SSID; - if (parseOptionalScope(MF.getFunction().getContext(), SSID)) - return true; - - // Up to two atomic orderings (cmpxchg provides guarantees on failure). - AtomicOrdering Order, FailureOrder; - if (parseOptionalAtomicOrdering(Order)) - return true; - - if (parseOptionalAtomicOrdering(FailureOrder)) - return true; - - if (Token.isNot(MIToken::IntegerLiteral) && - Token.isNot(MIToken::kw_unknown_size)) - return error("expected the size integer literal or 'unknown-size' after " - "memory operation"); - uint64_t Size; - if (Token.is(MIToken::IntegerLiteral)) { - if (getUint64(Size)) - return true; - } else if (Token.is(MIToken::kw_unknown_size)) { - Size = MemoryLocation::UnknownSize; - } - lex(); - - MachinePointerInfo Ptr = MachinePointerInfo(); - if (Token.is(MIToken::Identifier)) { - const char *Word = - ((Flags & MachineMemOperand::MOLoad) && - (Flags & MachineMemOperand::MOStore)) - ? "on" - : Flags & MachineMemOperand::MOLoad ? "from" : "into"; - if (Token.stringValue() != Word) - return error(Twine("expected '") + Word + "'"); - lex(); - - if (parseMachinePointerInfo(Ptr)) - return true; - } - unsigned BaseAlignment = (Size != MemoryLocation::UnknownSize ? Size : 1); - AAMDNodes AAInfo; - MDNode *Range = nullptr; - while (consumeIfPresent(MIToken::comma)) { - switch (Token.kind()) { - case MIToken::kw_align: - if (parseAlignment(BaseAlignment)) - return true; - break; - case MIToken::kw_addrspace: - if (parseAddrspace(Ptr.AddrSpace)) - return true; - break; - case MIToken::md_tbaa: - lex(); - if (parseMDNode(AAInfo.TBAA)) - return true; - break; - case MIToken::md_alias_scope: - lex(); - if (parseMDNode(AAInfo.Scope)) - return true; - break; - case MIToken::md_noalias: - lex(); - if (parseMDNode(AAInfo.NoAlias)) - return true; - break; - case MIToken::md_range: - lex(); - if (parseMDNode(Range)) - return true; - break; - // TODO: Report an error on duplicate metadata nodes. - default: - return error("expected 'align' or '!tbaa' or '!alias.scope' or " - "'!noalias' or '!range'"); - } - } - if (expectAndConsume(MIToken::rparen)) - return true; - Dest = MF.getMachineMemOperand(Ptr, Flags, Size, BaseAlignment, AAInfo, Range, - SSID, Order, FailureOrder); - return false; -} - -bool MIParser::parsePreOrPostInstrSymbol(MCSymbol *&Symbol) { - assert((Token.is(MIToken::kw_pre_instr_symbol) || - Token.is(MIToken::kw_post_instr_symbol)) && - "Invalid token for a pre- post-instruction symbol!"); - lex(); - if (Token.isNot(MIToken::MCSymbol)) - return error("expected a symbol after 'pre-instr-symbol'"); - Symbol = getOrCreateMCSymbol(Token.stringValue()); - lex(); - if (Token.isNewlineOrEOF() || Token.is(MIToken::coloncolon) || - Token.is(MIToken::lbrace)) - return false; - if (Token.isNot(MIToken::comma)) - return error("expected ',' before the next machine operand"); - lex(); - return false; -} - -void MIParser::initNames2InstrOpCodes() { - if (!Names2InstrOpCodes.empty()) - return; - const auto *TII = MF.getSubtarget().getInstrInfo(); - assert(TII && "Expected target instruction info"); - for (unsigned I = 0, E = TII->getNumOpcodes(); I < E; ++I) - Names2InstrOpCodes.insert(std::make_pair(StringRef(TII->getName(I)), I)); -} - -bool MIParser::parseInstrName(StringRef InstrName, unsigned &OpCode) { - initNames2InstrOpCodes(); - auto InstrInfo = Names2InstrOpCodes.find(InstrName); - if (InstrInfo == Names2InstrOpCodes.end()) - return true; - OpCode = InstrInfo->getValue(); - return false; -} - -void MIParser::initNames2Regs() { - if (!Names2Regs.empty()) - return; - // The '%noreg' register is the register 0. - Names2Regs.insert(std::make_pair("noreg", 0)); - const auto *TRI = MF.getSubtarget().getRegisterInfo(); - assert(TRI && "Expected target register info"); - for (unsigned I = 0, E = TRI->getNumRegs(); I < E; ++I) { - bool WasInserted = - Names2Regs.insert(std::make_pair(StringRef(TRI->getName(I)).lower(), I)) - .second; - (void)WasInserted; - assert(WasInserted && "Expected registers to be unique case-insensitively"); - } -} - -bool MIParser::getRegisterByName(StringRef RegName, unsigned &Reg) { - initNames2Regs(); - auto RegInfo = Names2Regs.find(RegName); - if (RegInfo == Names2Regs.end()) - return true; - Reg = RegInfo->getValue(); - return false; -} - -void MIParser::initNames2RegMasks() { - if (!Names2RegMasks.empty()) - return; - const auto *TRI = MF.getSubtarget().getRegisterInfo(); - assert(TRI && "Expected target register info"); - ArrayRef<const uint32_t *> RegMasks = TRI->getRegMasks(); - ArrayRef<const char *> RegMaskNames = TRI->getRegMaskNames(); - assert(RegMasks.size() == RegMaskNames.size()); - for (size_t I = 0, E = RegMasks.size(); I < E; ++I) - Names2RegMasks.insert( - std::make_pair(StringRef(RegMaskNames[I]).lower(), RegMasks[I])); -} - -const uint32_t *MIParser::getRegMask(StringRef Identifier) { - initNames2RegMasks(); - auto RegMaskInfo = Names2RegMasks.find(Identifier); - if (RegMaskInfo == Names2RegMasks.end()) - return nullptr; - return RegMaskInfo->getValue(); -} - -void MIParser::initNames2SubRegIndices() { - if (!Names2SubRegIndices.empty()) - return; - const TargetRegisterInfo *TRI = MF.getSubtarget().getRegisterInfo(); - for (unsigned I = 1, E = TRI->getNumSubRegIndices(); I < E; ++I) - Names2SubRegIndices.insert( - std::make_pair(StringRef(TRI->getSubRegIndexName(I)).lower(), I)); -} - -unsigned MIParser::getSubRegIndex(StringRef Name) { - initNames2SubRegIndices(); - auto SubRegInfo = Names2SubRegIndices.find(Name); - if (SubRegInfo == Names2SubRegIndices.end()) - return 0; - return SubRegInfo->getValue(); -} - -static void initSlots2BasicBlocks( - const Function &F, - DenseMap<unsigned, const BasicBlock *> &Slots2BasicBlocks) { - ModuleSlotTracker MST(F.getParent(), /*ShouldInitializeAllMetadata=*/false); - MST.incorporateFunction(F); - for (auto &BB : F) { - if (BB.hasName()) - continue; - int Slot = MST.getLocalSlot(&BB); - if (Slot == -1) - continue; - Slots2BasicBlocks.insert(std::make_pair(unsigned(Slot), &BB)); - } -} - -static const BasicBlock *getIRBlockFromSlot( - unsigned Slot, - const DenseMap<unsigned, const BasicBlock *> &Slots2BasicBlocks) { - auto BlockInfo = Slots2BasicBlocks.find(Slot); - if (BlockInfo == Slots2BasicBlocks.end()) - return nullptr; - return BlockInfo->second; -} - -const BasicBlock *MIParser::getIRBlock(unsigned Slot) { - if (Slots2BasicBlocks.empty()) - initSlots2BasicBlocks(MF.getFunction(), Slots2BasicBlocks); - return getIRBlockFromSlot(Slot, Slots2BasicBlocks); -} - -const BasicBlock *MIParser::getIRBlock(unsigned Slot, const Function &F) { - if (&F == &MF.getFunction()) - return getIRBlock(Slot); - DenseMap<unsigned, const BasicBlock *> CustomSlots2BasicBlocks; - initSlots2BasicBlocks(F, CustomSlots2BasicBlocks); - return getIRBlockFromSlot(Slot, CustomSlots2BasicBlocks); -} - -static void mapValueToSlot(const Value *V, ModuleSlotTracker &MST, - DenseMap<unsigned, const Value *> &Slots2Values) { - int Slot = MST.getLocalSlot(V); - if (Slot == -1) - return; - Slots2Values.insert(std::make_pair(unsigned(Slot), V)); -} - -/// Creates the mapping from slot numbers to function's unnamed IR values. -static void initSlots2Values(const Function &F, - DenseMap<unsigned, const Value *> &Slots2Values) { - ModuleSlotTracker MST(F.getParent(), /*ShouldInitializeAllMetadata=*/false); - MST.incorporateFunction(F); - for (const auto &Arg : F.args()) - mapValueToSlot(&Arg, MST, Slots2Values); - for (const auto &BB : F) { - mapValueToSlot(&BB, MST, Slots2Values); - for (const auto &I : BB) - mapValueToSlot(&I, MST, Slots2Values); - } -} - -const Value *MIParser::getIRValue(unsigned Slot) { - if (Slots2Values.empty()) - initSlots2Values(MF.getFunction(), Slots2Values); - auto ValueInfo = Slots2Values.find(Slot); - if (ValueInfo == Slots2Values.end()) - return nullptr; - return ValueInfo->second; -} - -void MIParser::initNames2TargetIndices() { - if (!Names2TargetIndices.empty()) - return; - const auto *TII = MF.getSubtarget().getInstrInfo(); - assert(TII && "Expected target instruction info"); - auto Indices = TII->getSerializableTargetIndices(); - for (const auto &I : Indices) - Names2TargetIndices.insert(std::make_pair(StringRef(I.second), I.first)); -} - -bool MIParser::getTargetIndex(StringRef Name, int &Index) { - initNames2TargetIndices(); - auto IndexInfo = Names2TargetIndices.find(Name); - if (IndexInfo == Names2TargetIndices.end()) - return true; - Index = IndexInfo->second; - return false; -} - -void MIParser::initNames2DirectTargetFlags() { - if (!Names2DirectTargetFlags.empty()) - return; - const auto *TII = MF.getSubtarget().getInstrInfo(); - assert(TII && "Expected target instruction info"); - auto Flags = TII->getSerializableDirectMachineOperandTargetFlags(); - for (const auto &I : Flags) - Names2DirectTargetFlags.insert( - std::make_pair(StringRef(I.second), I.first)); -} - -bool MIParser::getDirectTargetFlag(StringRef Name, unsigned &Flag) { - initNames2DirectTargetFlags(); - auto FlagInfo = Names2DirectTargetFlags.find(Name); - if (FlagInfo == Names2DirectTargetFlags.end()) - return true; - Flag = FlagInfo->second; - return false; -} - -void MIParser::initNames2BitmaskTargetFlags() { - if (!Names2BitmaskTargetFlags.empty()) - return; - const auto *TII = MF.getSubtarget().getInstrInfo(); - assert(TII && "Expected target instruction info"); - auto Flags = TII->getSerializableBitmaskMachineOperandTargetFlags(); - for (const auto &I : Flags) - Names2BitmaskTargetFlags.insert( - std::make_pair(StringRef(I.second), I.first)); -} - -bool MIParser::getBitmaskTargetFlag(StringRef Name, unsigned &Flag) { - initNames2BitmaskTargetFlags(); - auto FlagInfo = Names2BitmaskTargetFlags.find(Name); - if (FlagInfo == Names2BitmaskTargetFlags.end()) - return true; - Flag = FlagInfo->second; - return false; -} - -void MIParser::initNames2MMOTargetFlags() { - if (!Names2MMOTargetFlags.empty()) - return; - const auto *TII = MF.getSubtarget().getInstrInfo(); - assert(TII && "Expected target instruction info"); - auto Flags = TII->getSerializableMachineMemOperandTargetFlags(); - for (const auto &I : Flags) - Names2MMOTargetFlags.insert( - std::make_pair(StringRef(I.second), I.first)); -} - -bool MIParser::getMMOTargetFlag(StringRef Name, - MachineMemOperand::Flags &Flag) { - initNames2MMOTargetFlags(); - auto FlagInfo = Names2MMOTargetFlags.find(Name); - if (FlagInfo == Names2MMOTargetFlags.end()) - return true; - Flag = FlagInfo->second; - return false; -} - -MCSymbol *MIParser::getOrCreateMCSymbol(StringRef Name) { - // FIXME: Currently we can't recognize temporary or local symbols and call all - // of the appropriate forms to create them. However, this handles basic cases - // well as most of the special aspects are recognized by a prefix on their - // name, and the input names should already be unique. For test cases, keeping - // the symbol name out of the symbol table isn't terribly important. - return MF.getContext().getOrCreateSymbol(Name); -} - -bool MIParser::parseStringConstant(std::string &Result) { - if (Token.isNot(MIToken::StringConstant)) - return error("expected string constant"); - Result = Token.stringValue(); - lex(); - return false; -} - -bool llvm::parseMachineBasicBlockDefinitions(PerFunctionMIParsingState &PFS, - StringRef Src, - SMDiagnostic &Error) { - return MIParser(PFS, Error, Src).parseBasicBlockDefinitions(PFS.MBBSlots); -} - -bool llvm::parseMachineInstructions(PerFunctionMIParsingState &PFS, - StringRef Src, SMDiagnostic &Error) { - return MIParser(PFS, Error, Src).parseBasicBlocks(); -} - -bool llvm::parseMBBReference(PerFunctionMIParsingState &PFS, - MachineBasicBlock *&MBB, StringRef Src, - SMDiagnostic &Error) { - return MIParser(PFS, Error, Src).parseStandaloneMBB(MBB); -} - -bool llvm::parseRegisterReference(PerFunctionMIParsingState &PFS, - unsigned &Reg, StringRef Src, - SMDiagnostic &Error) { - return MIParser(PFS, Error, Src).parseStandaloneRegister(Reg); -} - -bool llvm::parseNamedRegisterReference(PerFunctionMIParsingState &PFS, - unsigned &Reg, StringRef Src, - SMDiagnostic &Error) { - return MIParser(PFS, Error, Src).parseStandaloneNamedRegister(Reg); -} - -bool llvm::parseVirtualRegisterReference(PerFunctionMIParsingState &PFS, - VRegInfo *&Info, StringRef Src, - SMDiagnostic &Error) { - return MIParser(PFS, Error, Src).parseStandaloneVirtualRegister(Info); -} - -bool llvm::parseStackObjectReference(PerFunctionMIParsingState &PFS, - int &FI, StringRef Src, - SMDiagnostic &Error) { - return MIParser(PFS, Error, Src).parseStandaloneStackObject(FI); -} - -bool llvm::parseMDNode(PerFunctionMIParsingState &PFS, - MDNode *&Node, StringRef Src, SMDiagnostic &Error) { - return MIParser(PFS, Error, Src).parseStandaloneMDNode(Node); -} |