1 //===- MIParser.cpp - Machine instructions parser implementation ----------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file implements the parsing of machine instructions.
12 //===----------------------------------------------------------------------===//
16 #include "llvm/ADT/APInt.h"
17 #include "llvm/ADT/APSInt.h"
18 #include "llvm/ADT/ArrayRef.h"
19 #include "llvm/ADT/DenseMap.h"
20 #include "llvm/ADT/None.h"
21 #include "llvm/ADT/Optional.h"
22 #include "llvm/ADT/SmallVector.h"
23 #include "llvm/ADT/StringMap.h"
24 #include "llvm/ADT/StringRef.h"
25 #include "llvm/ADT/StringSwitch.h"
26 #include "llvm/ADT/Twine.h"
27 #include "llvm/Analysis/MemoryLocation.h"
28 #include "llvm/AsmParser/Parser.h"
29 #include "llvm/AsmParser/SlotMapping.h"
30 #include "llvm/CodeGen/MIRPrinter.h"
31 #include "llvm/CodeGen/MachineBasicBlock.h"
32 #include "llvm/CodeGen/MachineFrameInfo.h"
33 #include "llvm/CodeGen/MachineFunction.h"
34 #include "llvm/CodeGen/MachineInstr.h"
35 #include "llvm/CodeGen/MachineInstrBuilder.h"
36 #include "llvm/CodeGen/MachineMemOperand.h"
37 #include "llvm/CodeGen/MachineOperand.h"
38 #include "llvm/CodeGen/MachineRegisterInfo.h"
39 #include "llvm/CodeGen/TargetInstrInfo.h"
40 #include "llvm/CodeGen/TargetRegisterInfo.h"
41 #include "llvm/CodeGen/TargetSubtargetInfo.h"
42 #include "llvm/IR/BasicBlock.h"
43 #include "llvm/IR/Constants.h"
44 #include "llvm/IR/DataLayout.h"
45 #include "llvm/IR/DebugInfoMetadata.h"
46 #include "llvm/IR/DebugLoc.h"
47 #include "llvm/IR/Function.h"
48 #include "llvm/IR/InstrTypes.h"
49 #include "llvm/IR/Instructions.h"
50 #include "llvm/IR/Intrinsics.h"
51 #include "llvm/IR/Metadata.h"
52 #include "llvm/IR/Module.h"
53 #include "llvm/IR/ModuleSlotTracker.h"
54 #include "llvm/IR/Type.h"
55 #include "llvm/IR/Value.h"
56 #include "llvm/IR/ValueSymbolTable.h"
57 #include "llvm/MC/LaneBitmask.h"
58 #include "llvm/MC/MCContext.h"
59 #include "llvm/MC/MCDwarf.h"
60 #include "llvm/MC/MCInstrDesc.h"
61 #include "llvm/MC/MCRegisterInfo.h"
62 #include "llvm/Support/AtomicOrdering.h"
63 #include "llvm/Support/BranchProbability.h"
64 #include "llvm/Support/Casting.h"
65 #include "llvm/Support/ErrorHandling.h"
66 #include "llvm/Support/LowLevelTypeImpl.h"
67 #include "llvm/Support/MemoryBuffer.h"
68 #include "llvm/Support/SMLoc.h"
69 #include "llvm/Support/SourceMgr.h"
70 #include "llvm/Support/raw_ostream.h"
71 #include "llvm/Target/TargetIntrinsicInfo.h"
72 #include "llvm/Target/TargetMachine.h"
84 PerFunctionMIParsingState::PerFunctionMIParsingState(MachineFunction &MF,
85 SourceMgr &SM, const SlotMapping &IRSlots,
86 const Name2RegClassMap &Names2RegClasses,
87 const Name2RegBankMap &Names2RegBanks)
88 : MF(MF), SM(&SM), IRSlots(IRSlots), Names2RegClasses(Names2RegClasses),
89 Names2RegBanks(Names2RegBanks) {
92 VRegInfo &PerFunctionMIParsingState::getVRegInfo(unsigned Num) {
93 auto I = VRegInfos.insert(std::make_pair(Num, nullptr));
95 MachineRegisterInfo &MRI = MF.getRegInfo();
96 VRegInfo *Info = new (Allocator) VRegInfo;
97 Info->VReg = MRI.createIncompleteVirtualRegister();
98 I.first->second = Info;
100 return *I.first->second;
103 VRegInfo &PerFunctionMIParsingState::getVRegInfoNamed(StringRef RegName) {
104 assert(RegName != "" && "Expected named reg.");
106 auto I = VRegInfosNamed.insert(std::make_pair(RegName.str(), nullptr));
108 VRegInfo *Info = new (Allocator) VRegInfo;
109 Info->VReg = MF.getRegInfo().createIncompleteVirtualRegister(RegName);
110 I.first->second = Info;
112 return *I.first->second;
117 /// A wrapper struct around the 'MachineOperand' struct that includes a source
118 /// range and other attributes.
119 struct ParsedMachineOperand {
120 MachineOperand Operand;
121 StringRef::iterator Begin;
122 StringRef::iterator End;
123 Optional<unsigned> TiedDefIdx;
125 ParsedMachineOperand(const MachineOperand &Operand, StringRef::iterator Begin,
126 StringRef::iterator End, Optional<unsigned> &TiedDefIdx)
127 : Operand(Operand), Begin(Begin), End(End), TiedDefIdx(TiedDefIdx) {
129 assert(Operand.isReg() && Operand.isUse() &&
130 "Only used register operands can be tied");
137 StringRef Source, CurrentSource;
139 PerFunctionMIParsingState &PFS;
140 /// Maps from instruction names to op codes.
141 StringMap<unsigned> Names2InstrOpCodes;
142 /// Maps from register names to registers.
143 StringMap<unsigned> Names2Regs;
144 /// Maps from register mask names to register masks.
145 StringMap<const uint32_t *> Names2RegMasks;
146 /// Maps from subregister names to subregister indices.
147 StringMap<unsigned> Names2SubRegIndices;
148 /// Maps from slot numbers to function's unnamed basic blocks.
149 DenseMap<unsigned, const BasicBlock *> Slots2BasicBlocks;
150 /// Maps from slot numbers to function's unnamed values.
151 DenseMap<unsigned, const Value *> Slots2Values;
152 /// Maps from target index names to target indices.
153 StringMap<int> Names2TargetIndices;
154 /// Maps from direct target flag names to the direct target flag values.
155 StringMap<unsigned> Names2DirectTargetFlags;
156 /// Maps from direct target flag names to the bitmask target flag values.
157 StringMap<unsigned> Names2BitmaskTargetFlags;
158 /// Maps from MMO target flag names to MMO target flag values.
159 StringMap<MachineMemOperand::Flags> Names2MMOTargetFlags;
162 MIParser(PerFunctionMIParsingState &PFS, SMDiagnostic &Error,
165 /// \p SkipChar gives the number of characters to skip before looking
166 /// for the next token.
167 void lex(unsigned SkipChar = 0);
169 /// Report an error at the current location with the given message.
171 /// This function always return true.
172 bool error(const Twine &Msg);
174 /// Report an error at the given location with the given message.
176 /// This function always return true.
177 bool error(StringRef::iterator Loc, const Twine &Msg);
180 parseBasicBlockDefinitions(DenseMap<unsigned, MachineBasicBlock *> &MBBSlots);
181 bool parseBasicBlocks();
182 bool parse(MachineInstr *&MI);
183 bool parseStandaloneMBB(MachineBasicBlock *&MBB);
184 bool parseStandaloneNamedRegister(unsigned &Reg);
185 bool parseStandaloneVirtualRegister(VRegInfo *&Info);
186 bool parseStandaloneRegister(unsigned &Reg);
187 bool parseStandaloneStackObject(int &FI);
188 bool parseStandaloneMDNode(MDNode *&Node);
191 parseBasicBlockDefinition(DenseMap<unsigned, MachineBasicBlock *> &MBBSlots);
192 bool parseBasicBlock(MachineBasicBlock &MBB,
193 MachineBasicBlock *&AddFalthroughFrom);
194 bool parseBasicBlockLiveins(MachineBasicBlock &MBB);
195 bool parseBasicBlockSuccessors(MachineBasicBlock &MBB);
197 bool parseNamedRegister(unsigned &Reg);
198 bool parseVirtualRegister(VRegInfo *&Info);
199 bool parseNamedVirtualRegister(VRegInfo *&Info);
200 bool parseRegister(unsigned &Reg, VRegInfo *&VRegInfo);
201 bool parseRegisterFlag(unsigned &Flags);
202 bool parseRegisterClassOrBank(VRegInfo &RegInfo);
203 bool parseSubRegisterIndex(unsigned &SubReg);
204 bool parseRegisterTiedDefIndex(unsigned &TiedDefIdx);
205 bool parseRegisterOperand(MachineOperand &Dest,
206 Optional<unsigned> &TiedDefIdx, bool IsDef = false);
207 bool parseImmediateOperand(MachineOperand &Dest);
208 bool parseIRConstant(StringRef::iterator Loc, StringRef StringValue,
210 bool parseIRConstant(StringRef::iterator Loc, const Constant *&C);
211 bool parseLowLevelType(StringRef::iterator Loc, LLT &Ty);
212 bool parseTypedImmediateOperand(MachineOperand &Dest);
213 bool parseFPImmediateOperand(MachineOperand &Dest);
214 bool parseMBBReference(MachineBasicBlock *&MBB);
215 bool parseMBBOperand(MachineOperand &Dest);
216 bool parseStackFrameIndex(int &FI);
217 bool parseStackObjectOperand(MachineOperand &Dest);
218 bool parseFixedStackFrameIndex(int &FI);
219 bool parseFixedStackObjectOperand(MachineOperand &Dest);
220 bool parseGlobalValue(GlobalValue *&GV);
221 bool parseGlobalAddressOperand(MachineOperand &Dest);
222 bool parseConstantPoolIndexOperand(MachineOperand &Dest);
223 bool parseSubRegisterIndexOperand(MachineOperand &Dest);
224 bool parseJumpTableIndexOperand(MachineOperand &Dest);
225 bool parseExternalSymbolOperand(MachineOperand &Dest);
226 bool parseMCSymbolOperand(MachineOperand &Dest);
227 bool parseMDNode(MDNode *&Node);
228 bool parseDIExpression(MDNode *&Expr);
229 bool parseDILocation(MDNode *&Expr);
230 bool parseMetadataOperand(MachineOperand &Dest);
231 bool parseCFIOffset(int &Offset);
232 bool parseCFIRegister(unsigned &Reg);
233 bool parseCFIEscapeValues(std::string& Values);
234 bool parseCFIOperand(MachineOperand &Dest);
235 bool parseIRBlock(BasicBlock *&BB, const Function &F);
236 bool parseBlockAddressOperand(MachineOperand &Dest);
237 bool parseIntrinsicOperand(MachineOperand &Dest);
238 bool parsePredicateOperand(MachineOperand &Dest);
239 bool parseTargetIndexOperand(MachineOperand &Dest);
240 bool parseCustomRegisterMaskOperand(MachineOperand &Dest);
241 bool parseLiveoutRegisterMaskOperand(MachineOperand &Dest);
242 bool parseMachineOperand(MachineOperand &Dest,
243 Optional<unsigned> &TiedDefIdx);
244 bool parseMachineOperandAndTargetFlags(MachineOperand &Dest,
245 Optional<unsigned> &TiedDefIdx);
246 bool parseOffset(int64_t &Offset);
247 bool parseAlignment(unsigned &Alignment);
248 bool parseAddrspace(unsigned &Addrspace);
249 bool parseOperandsOffset(MachineOperand &Op);
250 bool parseIRValue(const Value *&V);
251 bool parseMemoryOperandFlag(MachineMemOperand::Flags &Flags);
252 bool parseMemoryPseudoSourceValue(const PseudoSourceValue *&PSV);
253 bool parseMachinePointerInfo(MachinePointerInfo &Dest);
254 bool parseOptionalScope(LLVMContext &Context, SyncScope::ID &SSID);
255 bool parseOptionalAtomicOrdering(AtomicOrdering &Order);
256 bool parseMachineMemoryOperand(MachineMemOperand *&Dest);
257 bool parsePreOrPostInstrSymbol(MCSymbol *&Symbol);
260 /// Convert the integer literal in the current token into an unsigned integer.
262 /// Return true if an error occurred.
263 bool getUnsigned(unsigned &Result);
265 /// Convert the integer literal in the current token into an uint64.
267 /// Return true if an error occurred.
268 bool getUint64(uint64_t &Result);
270 /// Convert the hexadecimal literal in the current token into an unsigned
271 /// APInt with a minimum bitwidth required to represent the value.
273 /// Return true if the literal does not represent an integer value.
274 bool getHexUint(APInt &Result);
276 /// If the current token is of the given kind, consume it and return false.
277 /// Otherwise report an error and return true.
278 bool expectAndConsume(MIToken::TokenKind TokenKind);
280 /// If the current token is of the given kind, consume it and return true.
281 /// Otherwise return false.
282 bool consumeIfPresent(MIToken::TokenKind TokenKind);
284 void initNames2InstrOpCodes();
286 /// Try to convert an instruction name to an opcode. Return true if the
287 /// instruction name is invalid.
288 bool parseInstrName(StringRef InstrName, unsigned &OpCode);
290 bool parseInstruction(unsigned &OpCode, unsigned &Flags);
292 bool assignRegisterTies(MachineInstr &MI,
293 ArrayRef<ParsedMachineOperand> Operands);
295 bool verifyImplicitOperands(ArrayRef<ParsedMachineOperand> Operands,
296 const MCInstrDesc &MCID);
298 void initNames2Regs();
300 /// Try to convert a register name to a register number. Return true if the
301 /// register name is invalid.
302 bool getRegisterByName(StringRef RegName, unsigned &Reg);
304 void initNames2RegMasks();
306 /// Check if the given identifier is a name of a register mask.
308 /// Return null if the identifier isn't a register mask.
309 const uint32_t *getRegMask(StringRef Identifier);
311 void initNames2SubRegIndices();
313 /// Check if the given identifier is a name of a subregister index.
315 /// Return 0 if the name isn't a subregister index class.
316 unsigned getSubRegIndex(StringRef Name);
318 const BasicBlock *getIRBlock(unsigned Slot);
319 const BasicBlock *getIRBlock(unsigned Slot, const Function &F);
321 const Value *getIRValue(unsigned Slot);
323 void initNames2TargetIndices();
325 /// Try to convert a name of target index to the corresponding target index.
327 /// Return true if the name isn't a name of a target index.
328 bool getTargetIndex(StringRef Name, int &Index);
330 void initNames2DirectTargetFlags();
332 /// Try to convert a name of a direct target flag to the corresponding
335 /// Return true if the name isn't a name of a direct flag.
336 bool getDirectTargetFlag(StringRef Name, unsigned &Flag);
338 void initNames2BitmaskTargetFlags();
340 /// Try to convert a name of a bitmask target flag to the corresponding
343 /// Return true if the name isn't a name of a bitmask target flag.
344 bool getBitmaskTargetFlag(StringRef Name, unsigned &Flag);
346 void initNames2MMOTargetFlags();
348 /// Try to convert a name of a MachineMemOperand target flag to the
349 /// corresponding target flag.
351 /// Return true if the name isn't a name of a target MMO flag.
352 bool getMMOTargetFlag(StringRef Name, MachineMemOperand::Flags &Flag);
354 /// Get or create an MCSymbol for a given name.
355 MCSymbol *getOrCreateMCSymbol(StringRef Name);
357 /// parseStringConstant
358 /// ::= StringConstant
359 bool parseStringConstant(std::string &Result);
362 } // end anonymous namespace
364 MIParser::MIParser(PerFunctionMIParsingState &PFS, SMDiagnostic &Error,
366 : MF(PFS.MF), Error(Error), Source(Source), CurrentSource(Source), PFS(PFS)
369 void MIParser::lex(unsigned SkipChar) {
370 CurrentSource = lexMIToken(
371 CurrentSource.data() + SkipChar, Token,
372 [this](StringRef::iterator Loc, const Twine &Msg) { error(Loc, Msg); });
375 bool MIParser::error(const Twine &Msg) { return error(Token.location(), Msg); }
377 bool MIParser::error(StringRef::iterator Loc, const Twine &Msg) {
378 const SourceMgr &SM = *PFS.SM;
379 assert(Loc >= Source.data() && Loc <= (Source.data() + Source.size()));
380 const MemoryBuffer &Buffer = *SM.getMemoryBuffer(SM.getMainFileID());
381 if (Loc >= Buffer.getBufferStart() && Loc <= Buffer.getBufferEnd()) {
382 // Create an ordinary diagnostic when the source manager's buffer is the
384 Error = SM.GetMessage(SMLoc::getFromPointer(Loc), SourceMgr::DK_Error, Msg);
387 // Create a diagnostic for a YAML string literal.
388 Error = SMDiagnostic(SM, SMLoc(), Buffer.getBufferIdentifier(), 1,
389 Loc - Source.data(), SourceMgr::DK_Error, Msg.str(),
394 static const char *toString(MIToken::TokenKind TokenKind) {
402 case MIToken::lparen:
404 case MIToken::rparen:
407 return "<unknown token>";
411 bool MIParser::expectAndConsume(MIToken::TokenKind TokenKind) {
412 if (Token.isNot(TokenKind))
413 return error(Twine("expected ") + toString(TokenKind));
418 bool MIParser::consumeIfPresent(MIToken::TokenKind TokenKind) {
419 if (Token.isNot(TokenKind))
425 bool MIParser::parseBasicBlockDefinition(
426 DenseMap<unsigned, MachineBasicBlock *> &MBBSlots) {
427 assert(Token.is(MIToken::MachineBasicBlockLabel));
431 auto Loc = Token.location();
432 auto Name = Token.stringValue();
434 bool HasAddressTaken = false;
435 bool IsLandingPad = false;
436 unsigned Alignment = 0;
437 BasicBlock *BB = nullptr;
438 if (consumeIfPresent(MIToken::lparen)) {
440 // TODO: Report an error when multiple same attributes are specified.
441 switch (Token.kind()) {
442 case MIToken::kw_address_taken:
443 HasAddressTaken = true;
446 case MIToken::kw_landing_pad:
450 case MIToken::kw_align:
451 if (parseAlignment(Alignment))
454 case MIToken::IRBlock:
455 // TODO: Report an error when both name and ir block are specified.
456 if (parseIRBlock(BB, MF.getFunction()))
463 } while (consumeIfPresent(MIToken::comma));
464 if (expectAndConsume(MIToken::rparen))
467 if (expectAndConsume(MIToken::colon))
471 BB = dyn_cast_or_null<BasicBlock>(
472 MF.getFunction().getValueSymbolTable()->lookup(Name));
474 return error(Loc, Twine("basic block '") + Name +
475 "' is not defined in the function '" +
478 auto *MBB = MF.CreateMachineBasicBlock(BB);
479 MF.insert(MF.end(), MBB);
480 bool WasInserted = MBBSlots.insert(std::make_pair(ID, MBB)).second;
482 return error(Loc, Twine("redefinition of machine basic block with id #") +
485 MBB->setAlignment(Alignment);
487 MBB->setHasAddressTaken();
488 MBB->setIsEHPad(IsLandingPad);
492 bool MIParser::parseBasicBlockDefinitions(
493 DenseMap<unsigned, MachineBasicBlock *> &MBBSlots) {
495 // Skip until the first machine basic block.
496 while (Token.is(MIToken::Newline))
498 if (Token.isErrorOrEOF())
499 return Token.isError();
500 if (Token.isNot(MIToken::MachineBasicBlockLabel))
501 return error("expected a basic block definition before instructions");
502 unsigned BraceDepth = 0;
504 if (parseBasicBlockDefinition(MBBSlots))
506 bool IsAfterNewline = false;
507 // Skip until the next machine basic block.
509 if ((Token.is(MIToken::MachineBasicBlockLabel) && IsAfterNewline) ||
510 Token.isErrorOrEOF())
512 else if (Token.is(MIToken::MachineBasicBlockLabel))
513 return error("basic block definition should be located at the start of "
515 else if (consumeIfPresent(MIToken::Newline)) {
516 IsAfterNewline = true;
519 IsAfterNewline = false;
520 if (Token.is(MIToken::lbrace))
522 if (Token.is(MIToken::rbrace)) {
524 return error("extraneous closing brace ('}')");
529 // Verify that we closed all of the '{' at the end of a file or a block.
530 if (!Token.isError() && BraceDepth)
531 return error("expected '}'"); // FIXME: Report a note that shows '{'.
532 } while (!Token.isErrorOrEOF());
533 return Token.isError();
536 bool MIParser::parseBasicBlockLiveins(MachineBasicBlock &MBB) {
537 assert(Token.is(MIToken::kw_liveins));
539 if (expectAndConsume(MIToken::colon))
541 if (Token.isNewlineOrEOF()) // Allow an empty list of liveins.
544 if (Token.isNot(MIToken::NamedRegister))
545 return error("expected a named register");
547 if (parseNamedRegister(Reg))
550 LaneBitmask Mask = LaneBitmask::getAll();
551 if (consumeIfPresent(MIToken::colon)) {
553 if (Token.isNot(MIToken::IntegerLiteral) &&
554 Token.isNot(MIToken::HexLiteral))
555 return error("expected a lane mask");
556 static_assert(sizeof(LaneBitmask::Type) == sizeof(unsigned),
557 "Use correct get-function for lane mask");
560 return error("invalid lane mask value");
561 Mask = LaneBitmask(V);
564 MBB.addLiveIn(Reg, Mask);
565 } while (consumeIfPresent(MIToken::comma));
569 bool MIParser::parseBasicBlockSuccessors(MachineBasicBlock &MBB) {
570 assert(Token.is(MIToken::kw_successors));
572 if (expectAndConsume(MIToken::colon))
574 if (Token.isNewlineOrEOF()) // Allow an empty list of successors.
577 if (Token.isNot(MIToken::MachineBasicBlock))
578 return error("expected a machine basic block reference");
579 MachineBasicBlock *SuccMBB = nullptr;
580 if (parseMBBReference(SuccMBB))
584 if (consumeIfPresent(MIToken::lparen)) {
585 if (Token.isNot(MIToken::IntegerLiteral) &&
586 Token.isNot(MIToken::HexLiteral))
587 return error("expected an integer literal after '('");
588 if (getUnsigned(Weight))
591 if (expectAndConsume(MIToken::rparen))
594 MBB.addSuccessor(SuccMBB, BranchProbability::getRaw(Weight));
595 } while (consumeIfPresent(MIToken::comma));
596 MBB.normalizeSuccProbs();
600 bool MIParser::parseBasicBlock(MachineBasicBlock &MBB,
601 MachineBasicBlock *&AddFalthroughFrom) {
602 // Skip the definition.
603 assert(Token.is(MIToken::MachineBasicBlockLabel));
605 if (consumeIfPresent(MIToken::lparen)) {
606 while (Token.isNot(MIToken::rparen) && !Token.isErrorOrEOF())
608 consumeIfPresent(MIToken::rparen);
610 consumeIfPresent(MIToken::colon);
612 // Parse the liveins and successors.
613 // N.B: Multiple lists of successors and liveins are allowed and they're
620 // liveins: %edi, %esi
621 bool ExplicitSuccessors = false;
623 if (Token.is(MIToken::kw_successors)) {
624 if (parseBasicBlockSuccessors(MBB))
626 ExplicitSuccessors = true;
627 } else if (Token.is(MIToken::kw_liveins)) {
628 if (parseBasicBlockLiveins(MBB))
630 } else if (consumeIfPresent(MIToken::Newline)) {
634 if (!Token.isNewlineOrEOF())
635 return error("expected line break at the end of a list");
639 // Parse the instructions.
640 bool IsInBundle = false;
641 MachineInstr *PrevMI = nullptr;
642 while (!Token.is(MIToken::MachineBasicBlockLabel) &&
643 !Token.is(MIToken::Eof)) {
644 if (consumeIfPresent(MIToken::Newline))
646 if (consumeIfPresent(MIToken::rbrace)) {
647 // The first parsing pass should verify that all closing '}' have an
653 MachineInstr *MI = nullptr;
656 MBB.insert(MBB.end(), MI);
658 PrevMI->setFlag(MachineInstr::BundledSucc);
659 MI->setFlag(MachineInstr::BundledPred);
662 if (Token.is(MIToken::lbrace)) {
664 return error("nested instruction bundles are not allowed");
666 // This instruction is the start of the bundle.
667 MI->setFlag(MachineInstr::BundledSucc);
669 if (!Token.is(MIToken::Newline))
670 // The next instruction can be on the same line.
673 assert(Token.isNewlineOrEOF() && "MI is not fully parsed");
677 // Construct successor list by searching for basic block machine operands.
678 if (!ExplicitSuccessors) {
679 SmallVector<MachineBasicBlock*,4> Successors;
681 guessSuccessors(MBB, Successors, IsFallthrough);
682 for (MachineBasicBlock *Succ : Successors)
683 MBB.addSuccessor(Succ);
686 AddFalthroughFrom = &MBB;
688 MBB.normalizeSuccProbs();
695 bool MIParser::parseBasicBlocks() {
697 // Skip until the first machine basic block.
698 while (Token.is(MIToken::Newline))
700 if (Token.isErrorOrEOF())
701 return Token.isError();
702 // The first parsing pass should have verified that this token is a MBB label
703 // in the 'parseBasicBlockDefinitions' method.
704 assert(Token.is(MIToken::MachineBasicBlockLabel));
705 MachineBasicBlock *AddFalthroughFrom = nullptr;
707 MachineBasicBlock *MBB = nullptr;
708 if (parseMBBReference(MBB))
710 if (AddFalthroughFrom) {
711 if (!AddFalthroughFrom->isSuccessor(MBB))
712 AddFalthroughFrom->addSuccessor(MBB);
713 AddFalthroughFrom->normalizeSuccProbs();
714 AddFalthroughFrom = nullptr;
716 if (parseBasicBlock(*MBB, AddFalthroughFrom))
718 // The method 'parseBasicBlock' should parse the whole block until the next
719 // block or the end of file.
720 assert(Token.is(MIToken::MachineBasicBlockLabel) || Token.is(MIToken::Eof));
721 } while (Token.isNot(MIToken::Eof));
725 bool MIParser::parse(MachineInstr *&MI) {
726 // Parse any register operands before '='
727 MachineOperand MO = MachineOperand::CreateImm(0);
728 SmallVector<ParsedMachineOperand, 8> Operands;
729 while (Token.isRegister() || Token.isRegisterFlag()) {
730 auto Loc = Token.location();
731 Optional<unsigned> TiedDefIdx;
732 if (parseRegisterOperand(MO, TiedDefIdx, /*IsDef=*/true))
735 ParsedMachineOperand(MO, Loc, Token.location(), TiedDefIdx));
736 if (Token.isNot(MIToken::comma))
740 if (!Operands.empty() && expectAndConsume(MIToken::equal))
743 unsigned OpCode, Flags = 0;
744 if (Token.isError() || parseInstruction(OpCode, Flags))
747 // Parse the remaining machine operands.
748 while (!Token.isNewlineOrEOF() && Token.isNot(MIToken::kw_pre_instr_symbol) &&
749 Token.isNot(MIToken::kw_post_instr_symbol) &&
750 Token.isNot(MIToken::kw_debug_location) &&
751 Token.isNot(MIToken::coloncolon) && Token.isNot(MIToken::lbrace)) {
752 auto Loc = Token.location();
753 Optional<unsigned> TiedDefIdx;
754 if (parseMachineOperandAndTargetFlags(MO, TiedDefIdx))
756 if (OpCode == TargetOpcode::DBG_VALUE && MO.isReg())
759 ParsedMachineOperand(MO, Loc, Token.location(), TiedDefIdx));
760 if (Token.isNewlineOrEOF() || Token.is(MIToken::coloncolon) ||
761 Token.is(MIToken::lbrace))
763 if (Token.isNot(MIToken::comma))
764 return error("expected ',' before the next machine operand");
768 MCSymbol *PreInstrSymbol = nullptr;
769 if (Token.is(MIToken::kw_pre_instr_symbol))
770 if (parsePreOrPostInstrSymbol(PreInstrSymbol))
772 MCSymbol *PostInstrSymbol = nullptr;
773 if (Token.is(MIToken::kw_post_instr_symbol))
774 if (parsePreOrPostInstrSymbol(PostInstrSymbol))
777 DebugLoc DebugLocation;
778 if (Token.is(MIToken::kw_debug_location)) {
780 MDNode *Node = nullptr;
781 if (Token.is(MIToken::exclaim)) {
782 if (parseMDNode(Node))
784 } else if (Token.is(MIToken::md_dilocation)) {
785 if (parseDILocation(Node))
788 return error("expected a metadata node after 'debug-location'");
789 if (!isa<DILocation>(Node))
790 return error("referenced metadata is not a DILocation");
791 DebugLocation = DebugLoc(Node);
794 // Parse the machine memory operands.
795 SmallVector<MachineMemOperand *, 2> MemOperands;
796 if (Token.is(MIToken::coloncolon)) {
798 while (!Token.isNewlineOrEOF()) {
799 MachineMemOperand *MemOp = nullptr;
800 if (parseMachineMemoryOperand(MemOp))
802 MemOperands.push_back(MemOp);
803 if (Token.isNewlineOrEOF())
805 if (Token.isNot(MIToken::comma))
806 return error("expected ',' before the next machine memory operand");
811 const auto &MCID = MF.getSubtarget().getInstrInfo()->get(OpCode);
812 if (!MCID.isVariadic()) {
813 // FIXME: Move the implicit operand verification to the machine verifier.
814 if (verifyImplicitOperands(Operands, MCID))
818 // TODO: Check for extraneous machine operands.
819 MI = MF.CreateMachineInstr(MCID, DebugLocation, /*NoImplicit=*/true);
821 for (const auto &Operand : Operands)
822 MI->addOperand(MF, Operand.Operand);
823 if (assignRegisterTies(*MI, Operands))
826 MI->setPreInstrSymbol(MF, PreInstrSymbol);
828 MI->setPostInstrSymbol(MF, PostInstrSymbol);
829 if (!MemOperands.empty())
830 MI->setMemRefs(MF, MemOperands);
834 bool MIParser::parseStandaloneMBB(MachineBasicBlock *&MBB) {
836 if (Token.isNot(MIToken::MachineBasicBlock))
837 return error("expected a machine basic block reference");
838 if (parseMBBReference(MBB))
841 if (Token.isNot(MIToken::Eof))
843 "expected end of string after the machine basic block reference");
847 bool MIParser::parseStandaloneNamedRegister(unsigned &Reg) {
849 if (Token.isNot(MIToken::NamedRegister))
850 return error("expected a named register");
851 if (parseNamedRegister(Reg))
854 if (Token.isNot(MIToken::Eof))
855 return error("expected end of string after the register reference");
859 bool MIParser::parseStandaloneVirtualRegister(VRegInfo *&Info) {
861 if (Token.isNot(MIToken::VirtualRegister))
862 return error("expected a virtual register");
863 if (parseVirtualRegister(Info))
866 if (Token.isNot(MIToken::Eof))
867 return error("expected end of string after the register reference");
871 bool MIParser::parseStandaloneRegister(unsigned &Reg) {
873 if (Token.isNot(MIToken::NamedRegister) &&
874 Token.isNot(MIToken::VirtualRegister))
875 return error("expected either a named or virtual register");
878 if (parseRegister(Reg, Info))
882 if (Token.isNot(MIToken::Eof))
883 return error("expected end of string after the register reference");
887 bool MIParser::parseStandaloneStackObject(int &FI) {
889 if (Token.isNot(MIToken::StackObject))
890 return error("expected a stack object");
891 if (parseStackFrameIndex(FI))
893 if (Token.isNot(MIToken::Eof))
894 return error("expected end of string after the stack object reference");
898 bool MIParser::parseStandaloneMDNode(MDNode *&Node) {
900 if (Token.is(MIToken::exclaim)) {
901 if (parseMDNode(Node))
903 } else if (Token.is(MIToken::md_diexpr)) {
904 if (parseDIExpression(Node))
906 } else if (Token.is(MIToken::md_dilocation)) {
907 if (parseDILocation(Node))
910 return error("expected a metadata node");
911 if (Token.isNot(MIToken::Eof))
912 return error("expected end of string after the metadata node");
916 static const char *printImplicitRegisterFlag(const MachineOperand &MO) {
917 assert(MO.isImplicit());
918 return MO.isDef() ? "implicit-def" : "implicit";
921 static std::string getRegisterName(const TargetRegisterInfo *TRI,
923 assert(TargetRegisterInfo::isPhysicalRegister(Reg) && "expected phys reg");
924 return StringRef(TRI->getName(Reg)).lower();
927 /// Return true if the parsed machine operands contain a given machine operand.
928 static bool isImplicitOperandIn(const MachineOperand &ImplicitOperand,
929 ArrayRef<ParsedMachineOperand> Operands) {
930 for (const auto &I : Operands) {
931 if (ImplicitOperand.isIdenticalTo(I.Operand))
937 bool MIParser::verifyImplicitOperands(ArrayRef<ParsedMachineOperand> Operands,
938 const MCInstrDesc &MCID) {
940 // We can't verify call instructions as they can contain arbitrary implicit
941 // register and register mask operands.
944 // Gather all the expected implicit operands.
945 SmallVector<MachineOperand, 4> ImplicitOperands;
946 if (MCID.ImplicitDefs)
947 for (const MCPhysReg *ImpDefs = MCID.getImplicitDefs(); *ImpDefs; ++ImpDefs)
948 ImplicitOperands.push_back(
949 MachineOperand::CreateReg(*ImpDefs, true, true));
950 if (MCID.ImplicitUses)
951 for (const MCPhysReg *ImpUses = MCID.getImplicitUses(); *ImpUses; ++ImpUses)
952 ImplicitOperands.push_back(
953 MachineOperand::CreateReg(*ImpUses, false, true));
955 const auto *TRI = MF.getSubtarget().getRegisterInfo();
956 assert(TRI && "Expected target register info");
957 for (const auto &I : ImplicitOperands) {
958 if (isImplicitOperandIn(I, Operands))
960 return error(Operands.empty() ? Token.location() : Operands.back().End,
961 Twine("missing implicit register operand '") +
962 printImplicitRegisterFlag(I) + " $" +
963 getRegisterName(TRI, I.getReg()) + "'");
968 bool MIParser::parseInstruction(unsigned &OpCode, unsigned &Flags) {
969 // Allow frame and fast math flags for OPCODE
970 while (Token.is(MIToken::kw_frame_setup) ||
971 Token.is(MIToken::kw_frame_destroy) ||
972 Token.is(MIToken::kw_nnan) ||
973 Token.is(MIToken::kw_ninf) ||
974 Token.is(MIToken::kw_nsz) ||
975 Token.is(MIToken::kw_arcp) ||
976 Token.is(MIToken::kw_contract) ||
977 Token.is(MIToken::kw_afn) ||
978 Token.is(MIToken::kw_reassoc) ||
979 Token.is(MIToken::kw_nuw) ||
980 Token.is(MIToken::kw_nsw) ||
981 Token.is(MIToken::kw_exact)) {
982 // Mine frame and fast math flags
983 if (Token.is(MIToken::kw_frame_setup))
984 Flags |= MachineInstr::FrameSetup;
985 if (Token.is(MIToken::kw_frame_destroy))
986 Flags |= MachineInstr::FrameDestroy;
987 if (Token.is(MIToken::kw_nnan))
988 Flags |= MachineInstr::FmNoNans;
989 if (Token.is(MIToken::kw_ninf))
990 Flags |= MachineInstr::FmNoInfs;
991 if (Token.is(MIToken::kw_nsz))
992 Flags |= MachineInstr::FmNsz;
993 if (Token.is(MIToken::kw_arcp))
994 Flags |= MachineInstr::FmArcp;
995 if (Token.is(MIToken::kw_contract))
996 Flags |= MachineInstr::FmContract;
997 if (Token.is(MIToken::kw_afn))
998 Flags |= MachineInstr::FmAfn;
999 if (Token.is(MIToken::kw_reassoc))
1000 Flags |= MachineInstr::FmReassoc;
1001 if (Token.is(MIToken::kw_nuw))
1002 Flags |= MachineInstr::NoUWrap;
1003 if (Token.is(MIToken::kw_nsw))
1004 Flags |= MachineInstr::NoSWrap;
1005 if (Token.is(MIToken::kw_exact))
1006 Flags |= MachineInstr::IsExact;
1010 if (Token.isNot(MIToken::Identifier))
1011 return error("expected a machine instruction");
1012 StringRef InstrName = Token.stringValue();
1013 if (parseInstrName(InstrName, OpCode))
1014 return error(Twine("unknown machine instruction name '") + InstrName + "'");
1019 bool MIParser::parseNamedRegister(unsigned &Reg) {
1020 assert(Token.is(MIToken::NamedRegister) && "Needs NamedRegister token");
1021 StringRef Name = Token.stringValue();
1022 if (getRegisterByName(Name, Reg))
1023 return error(Twine("unknown register name '") + Name + "'");
1027 bool MIParser::parseNamedVirtualRegister(VRegInfo *&Info) {
1028 assert(Token.is(MIToken::NamedVirtualRegister) && "Expected NamedVReg token");
1029 StringRef Name = Token.stringValue();
1030 // TODO: Check that the VReg name is not the same as a physical register name.
1031 // If it is, then print a warning (when warnings are implemented).
1032 Info = &PFS.getVRegInfoNamed(Name);
1036 bool MIParser::parseVirtualRegister(VRegInfo *&Info) {
1037 if (Token.is(MIToken::NamedVirtualRegister))
1038 return parseNamedVirtualRegister(Info);
1039 assert(Token.is(MIToken::VirtualRegister) && "Needs VirtualRegister token");
1041 if (getUnsigned(ID))
1043 Info = &PFS.getVRegInfo(ID);
1047 bool MIParser::parseRegister(unsigned &Reg, VRegInfo *&Info) {
1048 switch (Token.kind()) {
1049 case MIToken::underscore:
1052 case MIToken::NamedRegister:
1053 return parseNamedRegister(Reg);
1054 case MIToken::NamedVirtualRegister:
1055 case MIToken::VirtualRegister:
1056 if (parseVirtualRegister(Info))
1060 // TODO: Parse other register kinds.
1062 llvm_unreachable("The current token should be a register");
1066 bool MIParser::parseRegisterClassOrBank(VRegInfo &RegInfo) {
1067 if (Token.isNot(MIToken::Identifier) && Token.isNot(MIToken::underscore))
1068 return error("expected '_', register class, or register bank name");
1069 StringRef::iterator Loc = Token.location();
1070 StringRef Name = Token.stringValue();
1072 // Was it a register class?
1073 auto RCNameI = PFS.Names2RegClasses.find(Name);
1074 if (RCNameI != PFS.Names2RegClasses.end()) {
1076 const TargetRegisterClass &RC = *RCNameI->getValue();
1078 switch (RegInfo.Kind) {
1079 case VRegInfo::UNKNOWN:
1080 case VRegInfo::NORMAL:
1081 RegInfo.Kind = VRegInfo::NORMAL;
1082 if (RegInfo.Explicit && RegInfo.D.RC != &RC) {
1083 const TargetRegisterInfo &TRI = *MF.getSubtarget().getRegisterInfo();
1084 return error(Loc, Twine("conflicting register classes, previously: ") +
1085 Twine(TRI.getRegClassName(RegInfo.D.RC)));
1088 RegInfo.Explicit = true;
1091 case VRegInfo::GENERIC:
1092 case VRegInfo::REGBANK:
1093 return error(Loc, "register class specification on generic register");
1095 llvm_unreachable("Unexpected register kind");
1098 // Should be a register bank or a generic register.
1099 const RegisterBank *RegBank = nullptr;
1101 auto RBNameI = PFS.Names2RegBanks.find(Name);
1102 if (RBNameI == PFS.Names2RegBanks.end())
1103 return error(Loc, "expected '_', register class, or register bank name");
1104 RegBank = RBNameI->getValue();
1109 switch (RegInfo.Kind) {
1110 case VRegInfo::UNKNOWN:
1111 case VRegInfo::GENERIC:
1112 case VRegInfo::REGBANK:
1113 RegInfo.Kind = RegBank ? VRegInfo::REGBANK : VRegInfo::GENERIC;
1114 if (RegInfo.Explicit && RegInfo.D.RegBank != RegBank)
1115 return error(Loc, "conflicting generic register banks");
1116 RegInfo.D.RegBank = RegBank;
1117 RegInfo.Explicit = true;
1120 case VRegInfo::NORMAL:
1121 return error(Loc, "register bank specification on normal register");
1123 llvm_unreachable("Unexpected register kind");
1126 bool MIParser::parseRegisterFlag(unsigned &Flags) {
1127 const unsigned OldFlags = Flags;
1128 switch (Token.kind()) {
1129 case MIToken::kw_implicit:
1130 Flags |= RegState::Implicit;
1132 case MIToken::kw_implicit_define:
1133 Flags |= RegState::ImplicitDefine;
1135 case MIToken::kw_def:
1136 Flags |= RegState::Define;
1138 case MIToken::kw_dead:
1139 Flags |= RegState::Dead;
1141 case MIToken::kw_killed:
1142 Flags |= RegState::Kill;
1144 case MIToken::kw_undef:
1145 Flags |= RegState::Undef;
1147 case MIToken::kw_internal:
1148 Flags |= RegState::InternalRead;
1150 case MIToken::kw_early_clobber:
1151 Flags |= RegState::EarlyClobber;
1153 case MIToken::kw_debug_use:
1154 Flags |= RegState::Debug;
1156 case MIToken::kw_renamable:
1157 Flags |= RegState::Renamable;
1160 llvm_unreachable("The current token should be a register flag");
1162 if (OldFlags == Flags)
1163 // We know that the same flag is specified more than once when the flags
1164 // weren't modified.
1165 return error("duplicate '" + Token.stringValue() + "' register flag");
1170 bool MIParser::parseSubRegisterIndex(unsigned &SubReg) {
1171 assert(Token.is(MIToken::dot));
1173 if (Token.isNot(MIToken::Identifier))
1174 return error("expected a subregister index after '.'");
1175 auto Name = Token.stringValue();
1176 SubReg = getSubRegIndex(Name);
1178 return error(Twine("use of unknown subregister index '") + Name + "'");
1183 bool MIParser::parseRegisterTiedDefIndex(unsigned &TiedDefIdx) {
1184 if (!consumeIfPresent(MIToken::kw_tied_def))
1186 if (Token.isNot(MIToken::IntegerLiteral))
1187 return error("expected an integer literal after 'tied-def'");
1188 if (getUnsigned(TiedDefIdx))
1191 if (expectAndConsume(MIToken::rparen))
1196 bool MIParser::assignRegisterTies(MachineInstr &MI,
1197 ArrayRef<ParsedMachineOperand> Operands) {
1198 SmallVector<std::pair<unsigned, unsigned>, 4> TiedRegisterPairs;
1199 for (unsigned I = 0, E = Operands.size(); I != E; ++I) {
1200 if (!Operands[I].TiedDefIdx)
1202 // The parser ensures that this operand is a register use, so we just have
1203 // to check the tied-def operand.
1204 unsigned DefIdx = Operands[I].TiedDefIdx.getValue();
1206 return error(Operands[I].Begin,
1207 Twine("use of invalid tied-def operand index '" +
1208 Twine(DefIdx) + "'; instruction has only ") +
1209 Twine(E) + " operands");
1210 const auto &DefOperand = Operands[DefIdx].Operand;
1211 if (!DefOperand.isReg() || !DefOperand.isDef())
1212 // FIXME: add note with the def operand.
1213 return error(Operands[I].Begin,
1214 Twine("use of invalid tied-def operand index '") +
1215 Twine(DefIdx) + "'; the operand #" + Twine(DefIdx) +
1216 " isn't a defined register");
1217 // Check that the tied-def operand wasn't tied elsewhere.
1218 for (const auto &TiedPair : TiedRegisterPairs) {
1219 if (TiedPair.first == DefIdx)
1220 return error(Operands[I].Begin,
1221 Twine("the tied-def operand #") + Twine(DefIdx) +
1222 " is already tied with another register operand");
1224 TiedRegisterPairs.push_back(std::make_pair(DefIdx, I));
1226 // FIXME: Verify that for non INLINEASM instructions, the def and use tied
1227 // indices must be less than tied max.
1228 for (const auto &TiedPair : TiedRegisterPairs)
1229 MI.tieOperands(TiedPair.first, TiedPair.second);
1233 bool MIParser::parseRegisterOperand(MachineOperand &Dest,
1234 Optional<unsigned> &TiedDefIdx,
1236 unsigned Flags = IsDef ? RegState::Define : 0;
1237 while (Token.isRegisterFlag()) {
1238 if (parseRegisterFlag(Flags))
1241 if (!Token.isRegister())
1242 return error("expected a register after register flags");
1245 if (parseRegister(Reg, RegInfo))
1248 unsigned SubReg = 0;
1249 if (Token.is(MIToken::dot)) {
1250 if (parseSubRegisterIndex(SubReg))
1252 if (!TargetRegisterInfo::isVirtualRegister(Reg))
1253 return error("subregister index expects a virtual register");
1255 if (Token.is(MIToken::colon)) {
1256 if (!TargetRegisterInfo::isVirtualRegister(Reg))
1257 return error("register class specification expects a virtual register");
1259 if (parseRegisterClassOrBank(*RegInfo))
1262 MachineRegisterInfo &MRI = MF.getRegInfo();
1263 if ((Flags & RegState::Define) == 0) {
1264 if (consumeIfPresent(MIToken::lparen)) {
1266 if (!parseRegisterTiedDefIndex(Idx))
1269 // Try a redundant low-level type.
1271 if (parseLowLevelType(Token.location(), Ty))
1272 return error("expected tied-def or low-level type after '('");
1274 if (expectAndConsume(MIToken::rparen))
1277 if (MRI.getType(Reg).isValid() && MRI.getType(Reg) != Ty)
1278 return error("inconsistent type for generic virtual register");
1280 MRI.setType(Reg, Ty);
1283 } else if (consumeIfPresent(MIToken::lparen)) {
1284 // Virtual registers may have a tpe with GlobalISel.
1285 if (!TargetRegisterInfo::isVirtualRegister(Reg))
1286 return error("unexpected type on physical register");
1289 if (parseLowLevelType(Token.location(), Ty))
1292 if (expectAndConsume(MIToken::rparen))
1295 if (MRI.getType(Reg).isValid() && MRI.getType(Reg) != Ty)
1296 return error("inconsistent type for generic virtual register");
1298 MRI.setType(Reg, Ty);
1299 } else if (TargetRegisterInfo::isVirtualRegister(Reg)) {
1300 // Generic virtual registers must have a type.
1301 // If we end up here this means the type hasn't been specified and
1303 if (RegInfo->Kind == VRegInfo::GENERIC ||
1304 RegInfo->Kind == VRegInfo::REGBANK)
1305 return error("generic virtual registers must have a type");
1307 Dest = MachineOperand::CreateReg(
1308 Reg, Flags & RegState::Define, Flags & RegState::Implicit,
1309 Flags & RegState::Kill, Flags & RegState::Dead, Flags & RegState::Undef,
1310 Flags & RegState::EarlyClobber, SubReg, Flags & RegState::Debug,
1311 Flags & RegState::InternalRead, Flags & RegState::Renamable);
1316 bool MIParser::parseImmediateOperand(MachineOperand &Dest) {
1317 assert(Token.is(MIToken::IntegerLiteral));
1318 const APSInt &Int = Token.integerValue();
1319 if (Int.getMinSignedBits() > 64)
1320 return error("integer literal is too large to be an immediate operand");
1321 Dest = MachineOperand::CreateImm(Int.getExtValue());
1326 bool MIParser::parseIRConstant(StringRef::iterator Loc, StringRef StringValue,
1327 const Constant *&C) {
1328 auto Source = StringValue.str(); // The source has to be null terminated.
1330 C = parseConstantValue(Source, Err, *MF.getFunction().getParent(),
1333 return error(Loc + Err.getColumnNo(), Err.getMessage());
1337 bool MIParser::parseIRConstant(StringRef::iterator Loc, const Constant *&C) {
1338 if (parseIRConstant(Loc, StringRef(Loc, Token.range().end() - Loc), C))
1344 bool MIParser::parseLowLevelType(StringRef::iterator Loc, LLT &Ty) {
1345 if (Token.range().front() == 's' || Token.range().front() == 'p') {
1346 StringRef SizeStr = Token.range().drop_front();
1347 if (SizeStr.size() == 0 || !llvm::all_of(SizeStr, isdigit))
1348 return error("expected integers after 's'/'p' type character");
1351 if (Token.range().front() == 's') {
1352 Ty = LLT::scalar(APSInt(Token.range().drop_front()).getZExtValue());
1355 } else if (Token.range().front() == 'p') {
1356 const DataLayout &DL = MF.getDataLayout();
1357 unsigned AS = APSInt(Token.range().drop_front()).getZExtValue();
1358 Ty = LLT::pointer(AS, DL.getPointerSizeInBits(AS));
1363 // Now we're looking for a vector.
1364 if (Token.isNot(MIToken::less))
1366 "expected sN, pA, <M x sN>, or <M x pA> for GlobalISel type");
1369 if (Token.isNot(MIToken::IntegerLiteral))
1370 return error(Loc, "expected <M x sN> or <M x pA> for vector type");
1371 uint64_t NumElements = Token.integerValue().getZExtValue();
1374 if (Token.isNot(MIToken::Identifier) || Token.stringValue() != "x")
1375 return error(Loc, "expected <M x sN> or <M x pA> for vector type");
1378 if (Token.range().front() != 's' && Token.range().front() != 'p')
1379 return error(Loc, "expected <M x sN> or <M x pA> for vector type");
1380 StringRef SizeStr = Token.range().drop_front();
1381 if (SizeStr.size() == 0 || !llvm::all_of(SizeStr, isdigit))
1382 return error("expected integers after 's'/'p' type character");
1384 if (Token.range().front() == 's')
1385 Ty = LLT::scalar(APSInt(Token.range().drop_front()).getZExtValue());
1386 else if (Token.range().front() == 'p') {
1387 const DataLayout &DL = MF.getDataLayout();
1388 unsigned AS = APSInt(Token.range().drop_front()).getZExtValue();
1389 Ty = LLT::pointer(AS, DL.getPointerSizeInBits(AS));
1391 return error(Loc, "expected <M x sN> or <M x pA> for vector type");
1394 if (Token.isNot(MIToken::greater))
1395 return error(Loc, "expected <M x sN> or <M x pA> for vector type");
1398 Ty = LLT::vector(NumElements, Ty);
1402 bool MIParser::parseTypedImmediateOperand(MachineOperand &Dest) {
1403 assert(Token.is(MIToken::Identifier));
1404 StringRef TypeStr = Token.range();
1405 if (TypeStr.front() != 'i' && TypeStr.front() != 's' &&
1406 TypeStr.front() != 'p')
1408 "a typed immediate operand should start with one of 'i', 's', or 'p'");
1409 StringRef SizeStr = Token.range().drop_front();
1410 if (SizeStr.size() == 0 || !llvm::all_of(SizeStr, isdigit))
1411 return error("expected integers after 'i'/'s'/'p' type character");
1413 auto Loc = Token.location();
1415 if (Token.isNot(MIToken::IntegerLiteral)) {
1416 if (Token.isNot(MIToken::Identifier) ||
1417 !(Token.range() == "true" || Token.range() == "false"))
1418 return error("expected an integer literal");
1420 const Constant *C = nullptr;
1421 if (parseIRConstant(Loc, C))
1423 Dest = MachineOperand::CreateCImm(cast<ConstantInt>(C));
1427 bool MIParser::parseFPImmediateOperand(MachineOperand &Dest) {
1428 auto Loc = Token.location();
1430 if (Token.isNot(MIToken::FloatingPointLiteral) &&
1431 Token.isNot(MIToken::HexLiteral))
1432 return error("expected a floating point literal");
1433 const Constant *C = nullptr;
1434 if (parseIRConstant(Loc, C))
1436 Dest = MachineOperand::CreateFPImm(cast<ConstantFP>(C));
1440 bool MIParser::getUnsigned(unsigned &Result) {
1441 if (Token.hasIntegerValue()) {
1442 const uint64_t Limit = uint64_t(std::numeric_limits<unsigned>::max()) + 1;
1443 uint64_t Val64 = Token.integerValue().getLimitedValue(Limit);
1445 return error("expected 32-bit integer (too large)");
1449 if (Token.is(MIToken::HexLiteral)) {
1453 if (A.getBitWidth() > 32)
1454 return error("expected 32-bit integer (too large)");
1455 Result = A.getZExtValue();
1461 bool MIParser::parseMBBReference(MachineBasicBlock *&MBB) {
1462 assert(Token.is(MIToken::MachineBasicBlock) ||
1463 Token.is(MIToken::MachineBasicBlockLabel));
1465 if (getUnsigned(Number))
1467 auto MBBInfo = PFS.MBBSlots.find(Number);
1468 if (MBBInfo == PFS.MBBSlots.end())
1469 return error(Twine("use of undefined machine basic block #") +
1471 MBB = MBBInfo->second;
1472 // TODO: Only parse the name if it's a MachineBasicBlockLabel. Deprecate once
1473 // we drop the <irname> from the bb.<id>.<irname> format.
1474 if (!Token.stringValue().empty() && Token.stringValue() != MBB->getName())
1475 return error(Twine("the name of machine basic block #") + Twine(Number) +
1476 " isn't '" + Token.stringValue() + "'");
1480 bool MIParser::parseMBBOperand(MachineOperand &Dest) {
1481 MachineBasicBlock *MBB;
1482 if (parseMBBReference(MBB))
1484 Dest = MachineOperand::CreateMBB(MBB);
1489 bool MIParser::parseStackFrameIndex(int &FI) {
1490 assert(Token.is(MIToken::StackObject));
1492 if (getUnsigned(ID))
1494 auto ObjectInfo = PFS.StackObjectSlots.find(ID);
1495 if (ObjectInfo == PFS.StackObjectSlots.end())
1496 return error(Twine("use of undefined stack object '%stack.") + Twine(ID) +
1499 if (const auto *Alloca =
1500 MF.getFrameInfo().getObjectAllocation(ObjectInfo->second))
1501 Name = Alloca->getName();
1502 if (!Token.stringValue().empty() && Token.stringValue() != Name)
1503 return error(Twine("the name of the stack object '%stack.") + Twine(ID) +
1504 "' isn't '" + Token.stringValue() + "'");
1506 FI = ObjectInfo->second;
1510 bool MIParser::parseStackObjectOperand(MachineOperand &Dest) {
1512 if (parseStackFrameIndex(FI))
1514 Dest = MachineOperand::CreateFI(FI);
1518 bool MIParser::parseFixedStackFrameIndex(int &FI) {
1519 assert(Token.is(MIToken::FixedStackObject));
1521 if (getUnsigned(ID))
1523 auto ObjectInfo = PFS.FixedStackObjectSlots.find(ID);
1524 if (ObjectInfo == PFS.FixedStackObjectSlots.end())
1525 return error(Twine("use of undefined fixed stack object '%fixed-stack.") +
1528 FI = ObjectInfo->second;
1532 bool MIParser::parseFixedStackObjectOperand(MachineOperand &Dest) {
1534 if (parseFixedStackFrameIndex(FI))
1536 Dest = MachineOperand::CreateFI(FI);
1540 bool MIParser::parseGlobalValue(GlobalValue *&GV) {
1541 switch (Token.kind()) {
1542 case MIToken::NamedGlobalValue: {
1543 const Module *M = MF.getFunction().getParent();
1544 GV = M->getNamedValue(Token.stringValue());
1546 return error(Twine("use of undefined global value '") + Token.range() +
1550 case MIToken::GlobalValue: {
1552 if (getUnsigned(GVIdx))
1554 if (GVIdx >= PFS.IRSlots.GlobalValues.size())
1555 return error(Twine("use of undefined global value '@") + Twine(GVIdx) +
1557 GV = PFS.IRSlots.GlobalValues[GVIdx];
1561 llvm_unreachable("The current token should be a global value");
1566 bool MIParser::parseGlobalAddressOperand(MachineOperand &Dest) {
1567 GlobalValue *GV = nullptr;
1568 if (parseGlobalValue(GV))
1571 Dest = MachineOperand::CreateGA(GV, /*Offset=*/0);
1572 if (parseOperandsOffset(Dest))
1577 bool MIParser::parseConstantPoolIndexOperand(MachineOperand &Dest) {
1578 assert(Token.is(MIToken::ConstantPoolItem));
1580 if (getUnsigned(ID))
1582 auto ConstantInfo = PFS.ConstantPoolSlots.find(ID);
1583 if (ConstantInfo == PFS.ConstantPoolSlots.end())
1584 return error("use of undefined constant '%const." + Twine(ID) + "'");
1586 Dest = MachineOperand::CreateCPI(ID, /*Offset=*/0);
1587 if (parseOperandsOffset(Dest))
1592 bool MIParser::parseJumpTableIndexOperand(MachineOperand &Dest) {
1593 assert(Token.is(MIToken::JumpTableIndex));
1595 if (getUnsigned(ID))
1597 auto JumpTableEntryInfo = PFS.JumpTableSlots.find(ID);
1598 if (JumpTableEntryInfo == PFS.JumpTableSlots.end())
1599 return error("use of undefined jump table '%jump-table." + Twine(ID) + "'");
1601 Dest = MachineOperand::CreateJTI(JumpTableEntryInfo->second);
1605 bool MIParser::parseExternalSymbolOperand(MachineOperand &Dest) {
1606 assert(Token.is(MIToken::ExternalSymbol));
1607 const char *Symbol = MF.createExternalSymbolName(Token.stringValue());
1609 Dest = MachineOperand::CreateES(Symbol);
1610 if (parseOperandsOffset(Dest))
1615 bool MIParser::parseMCSymbolOperand(MachineOperand &Dest) {
1616 assert(Token.is(MIToken::MCSymbol));
1617 MCSymbol *Symbol = getOrCreateMCSymbol(Token.stringValue());
1619 Dest = MachineOperand::CreateMCSymbol(Symbol);
1620 if (parseOperandsOffset(Dest))
1625 bool MIParser::parseSubRegisterIndexOperand(MachineOperand &Dest) {
1626 assert(Token.is(MIToken::SubRegisterIndex));
1627 StringRef Name = Token.stringValue();
1628 unsigned SubRegIndex = getSubRegIndex(Token.stringValue());
1629 if (SubRegIndex == 0)
1630 return error(Twine("unknown subregister index '") + Name + "'");
1632 Dest = MachineOperand::CreateImm(SubRegIndex);
1636 bool MIParser::parseMDNode(MDNode *&Node) {
1637 assert(Token.is(MIToken::exclaim));
1639 auto Loc = Token.location();
1641 if (Token.isNot(MIToken::IntegerLiteral) || Token.integerValue().isSigned())
1642 return error("expected metadata id after '!'");
1644 if (getUnsigned(ID))
1646 auto NodeInfo = PFS.IRSlots.MetadataNodes.find(ID);
1647 if (NodeInfo == PFS.IRSlots.MetadataNodes.end())
1648 return error(Loc, "use of undefined metadata '!" + Twine(ID) + "'");
1650 Node = NodeInfo->second.get();
1654 bool MIParser::parseDIExpression(MDNode *&Expr) {
1655 assert(Token.is(MIToken::md_diexpr));
1658 // FIXME: Share this parsing with the IL parser.
1659 SmallVector<uint64_t, 8> Elements;
1661 if (expectAndConsume(MIToken::lparen))
1664 if (Token.isNot(MIToken::rparen)) {
1666 if (Token.is(MIToken::Identifier)) {
1667 if (unsigned Op = dwarf::getOperationEncoding(Token.stringValue())) {
1669 Elements.push_back(Op);
1672 return error(Twine("invalid DWARF op '") + Token.stringValue() + "'");
1675 if (Token.isNot(MIToken::IntegerLiteral) ||
1676 Token.integerValue().isSigned())
1677 return error("expected unsigned integer");
1679 auto &U = Token.integerValue();
1680 if (U.ugt(UINT64_MAX))
1681 return error("element too large, limit is " + Twine(UINT64_MAX));
1682 Elements.push_back(U.getZExtValue());
1685 } while (consumeIfPresent(MIToken::comma));
1688 if (expectAndConsume(MIToken::rparen))
1691 Expr = DIExpression::get(MF.getFunction().getContext(), Elements);
1695 bool MIParser::parseDILocation(MDNode *&Loc) {
1696 assert(Token.is(MIToken::md_dilocation));
1699 bool HaveLine = false;
1701 unsigned Column = 0;
1702 MDNode *Scope = nullptr;
1703 MDNode *InlinedAt = nullptr;
1704 bool ImplicitCode = false;
1706 if (expectAndConsume(MIToken::lparen))
1709 if (Token.isNot(MIToken::rparen)) {
1711 if (Token.is(MIToken::Identifier)) {
1712 if (Token.stringValue() == "line") {
1714 if (expectAndConsume(MIToken::colon))
1716 if (Token.isNot(MIToken::IntegerLiteral) ||
1717 Token.integerValue().isSigned())
1718 return error("expected unsigned integer");
1719 Line = Token.integerValue().getZExtValue();
1724 if (Token.stringValue() == "column") {
1726 if (expectAndConsume(MIToken::colon))
1728 if (Token.isNot(MIToken::IntegerLiteral) ||
1729 Token.integerValue().isSigned())
1730 return error("expected unsigned integer");
1731 Column = Token.integerValue().getZExtValue();
1735 if (Token.stringValue() == "scope") {
1737 if (expectAndConsume(MIToken::colon))
1739 if (parseMDNode(Scope))
1740 return error("expected metadata node");
1741 if (!isa<DIScope>(Scope))
1742 return error("expected DIScope node");
1745 if (Token.stringValue() == "inlinedAt") {
1747 if (expectAndConsume(MIToken::colon))
1749 if (Token.is(MIToken::exclaim)) {
1750 if (parseMDNode(InlinedAt))
1752 } else if (Token.is(MIToken::md_dilocation)) {
1753 if (parseDILocation(InlinedAt))
1756 return error("expected metadata node");
1757 if (!isa<DILocation>(InlinedAt))
1758 return error("expected DILocation node");
1761 if (Token.stringValue() == "isImplicitCode") {
1763 if (expectAndConsume(MIToken::colon))
1765 if (!Token.is(MIToken::Identifier))
1766 return error("expected true/false");
1767 // As far as I can see, we don't have any existing need for parsing
1768 // true/false in MIR yet. Do it ad-hoc until there's something else
1770 if (Token.stringValue() == "true")
1771 ImplicitCode = true;
1772 else if (Token.stringValue() == "false")
1773 ImplicitCode = false;
1775 return error("expected true/false");
1780 return error(Twine("invalid DILocation argument '") +
1781 Token.stringValue() + "'");
1782 } while (consumeIfPresent(MIToken::comma));
1785 if (expectAndConsume(MIToken::rparen))
1789 return error("DILocation requires line number");
1791 return error("DILocation requires a scope");
1793 Loc = DILocation::get(MF.getFunction().getContext(), Line, Column, Scope,
1794 InlinedAt, ImplicitCode);
1798 bool MIParser::parseMetadataOperand(MachineOperand &Dest) {
1799 MDNode *Node = nullptr;
1800 if (Token.is(MIToken::exclaim)) {
1801 if (parseMDNode(Node))
1803 } else if (Token.is(MIToken::md_diexpr)) {
1804 if (parseDIExpression(Node))
1807 Dest = MachineOperand::CreateMetadata(Node);
1811 bool MIParser::parseCFIOffset(int &Offset) {
1812 if (Token.isNot(MIToken::IntegerLiteral))
1813 return error("expected a cfi offset");
1814 if (Token.integerValue().getMinSignedBits() > 32)
1815 return error("expected a 32 bit integer (the cfi offset is too large)");
1816 Offset = (int)Token.integerValue().getExtValue();
1821 bool MIParser::parseCFIRegister(unsigned &Reg) {
1822 if (Token.isNot(MIToken::NamedRegister))
1823 return error("expected a cfi register");
1825 if (parseNamedRegister(LLVMReg))
1827 const auto *TRI = MF.getSubtarget().getRegisterInfo();
1828 assert(TRI && "Expected target register info");
1829 int DwarfReg = TRI->getDwarfRegNum(LLVMReg, true);
1831 return error("invalid DWARF register");
1832 Reg = (unsigned)DwarfReg;
1837 bool MIParser::parseCFIEscapeValues(std::string &Values) {
1839 if (Token.isNot(MIToken::HexLiteral))
1840 return error("expected a hexadecimal literal");
1842 if (getUnsigned(Value))
1844 if (Value > UINT8_MAX)
1845 return error("expected a 8-bit integer (too large)");
1846 Values.push_back(static_cast<uint8_t>(Value));
1848 } while (consumeIfPresent(MIToken::comma));
1852 bool MIParser::parseCFIOperand(MachineOperand &Dest) {
1853 auto Kind = Token.kind();
1859 case MIToken::kw_cfi_same_value:
1860 if (parseCFIRegister(Reg))
1862 CFIIndex = MF.addFrameInst(MCCFIInstruction::createSameValue(nullptr, Reg));
1864 case MIToken::kw_cfi_offset:
1865 if (parseCFIRegister(Reg) || expectAndConsume(MIToken::comma) ||
1866 parseCFIOffset(Offset))
1869 MF.addFrameInst(MCCFIInstruction::createOffset(nullptr, Reg, Offset));
1871 case MIToken::kw_cfi_rel_offset:
1872 if (parseCFIRegister(Reg) || expectAndConsume(MIToken::comma) ||
1873 parseCFIOffset(Offset))
1875 CFIIndex = MF.addFrameInst(
1876 MCCFIInstruction::createRelOffset(nullptr, Reg, Offset));
1878 case MIToken::kw_cfi_def_cfa_register:
1879 if (parseCFIRegister(Reg))
1882 MF.addFrameInst(MCCFIInstruction::createDefCfaRegister(nullptr, Reg));
1884 case MIToken::kw_cfi_def_cfa_offset:
1885 if (parseCFIOffset(Offset))
1887 // NB: MCCFIInstruction::createDefCfaOffset negates the offset.
1888 CFIIndex = MF.addFrameInst(
1889 MCCFIInstruction::createDefCfaOffset(nullptr, -Offset));
1891 case MIToken::kw_cfi_adjust_cfa_offset:
1892 if (parseCFIOffset(Offset))
1894 CFIIndex = MF.addFrameInst(
1895 MCCFIInstruction::createAdjustCfaOffset(nullptr, Offset));
1897 case MIToken::kw_cfi_def_cfa:
1898 if (parseCFIRegister(Reg) || expectAndConsume(MIToken::comma) ||
1899 parseCFIOffset(Offset))
1901 // NB: MCCFIInstruction::createDefCfa negates the offset.
1903 MF.addFrameInst(MCCFIInstruction::createDefCfa(nullptr, Reg, -Offset));
1905 case MIToken::kw_cfi_remember_state:
1906 CFIIndex = MF.addFrameInst(MCCFIInstruction::createRememberState(nullptr));
1908 case MIToken::kw_cfi_restore:
1909 if (parseCFIRegister(Reg))
1911 CFIIndex = MF.addFrameInst(MCCFIInstruction::createRestore(nullptr, Reg));
1913 case MIToken::kw_cfi_restore_state:
1914 CFIIndex = MF.addFrameInst(MCCFIInstruction::createRestoreState(nullptr));
1916 case MIToken::kw_cfi_undefined:
1917 if (parseCFIRegister(Reg))
1919 CFIIndex = MF.addFrameInst(MCCFIInstruction::createUndefined(nullptr, Reg));
1921 case MIToken::kw_cfi_register: {
1923 if (parseCFIRegister(Reg) || expectAndConsume(MIToken::comma) ||
1924 parseCFIRegister(Reg2))
1928 MF.addFrameInst(MCCFIInstruction::createRegister(nullptr, Reg, Reg2));
1931 case MIToken::kw_cfi_window_save:
1932 CFIIndex = MF.addFrameInst(MCCFIInstruction::createWindowSave(nullptr));
1934 case MIToken::kw_cfi_aarch64_negate_ra_sign_state:
1935 CFIIndex = MF.addFrameInst(MCCFIInstruction::createNegateRAState(nullptr));
1937 case MIToken::kw_cfi_escape: {
1939 if (parseCFIEscapeValues(Values))
1941 CFIIndex = MF.addFrameInst(MCCFIInstruction::createEscape(nullptr, Values));
1945 // TODO: Parse the other CFI operands.
1946 llvm_unreachable("The current token should be a cfi operand");
1948 Dest = MachineOperand::CreateCFIIndex(CFIIndex);
1952 bool MIParser::parseIRBlock(BasicBlock *&BB, const Function &F) {
1953 switch (Token.kind()) {
1954 case MIToken::NamedIRBlock: {
1955 BB = dyn_cast_or_null<BasicBlock>(
1956 F.getValueSymbolTable()->lookup(Token.stringValue()));
1958 return error(Twine("use of undefined IR block '") + Token.range() + "'");
1961 case MIToken::IRBlock: {
1962 unsigned SlotNumber = 0;
1963 if (getUnsigned(SlotNumber))
1965 BB = const_cast<BasicBlock *>(getIRBlock(SlotNumber, F));
1967 return error(Twine("use of undefined IR block '%ir-block.") +
1968 Twine(SlotNumber) + "'");
1972 llvm_unreachable("The current token should be an IR block reference");
1977 bool MIParser::parseBlockAddressOperand(MachineOperand &Dest) {
1978 assert(Token.is(MIToken::kw_blockaddress));
1980 if (expectAndConsume(MIToken::lparen))
1982 if (Token.isNot(MIToken::GlobalValue) &&
1983 Token.isNot(MIToken::NamedGlobalValue))
1984 return error("expected a global value");
1985 GlobalValue *GV = nullptr;
1986 if (parseGlobalValue(GV))
1988 auto *F = dyn_cast<Function>(GV);
1990 return error("expected an IR function reference");
1992 if (expectAndConsume(MIToken::comma))
1994 BasicBlock *BB = nullptr;
1995 if (Token.isNot(MIToken::IRBlock) && Token.isNot(MIToken::NamedIRBlock))
1996 return error("expected an IR block reference");
1997 if (parseIRBlock(BB, *F))
2000 if (expectAndConsume(MIToken::rparen))
2002 Dest = MachineOperand::CreateBA(BlockAddress::get(F, BB), /*Offset=*/0);
2003 if (parseOperandsOffset(Dest))
2008 bool MIParser::parseIntrinsicOperand(MachineOperand &Dest) {
2009 assert(Token.is(MIToken::kw_intrinsic));
2011 if (expectAndConsume(MIToken::lparen))
2012 return error("expected syntax intrinsic(@llvm.whatever)");
2014 if (Token.isNot(MIToken::NamedGlobalValue))
2015 return error("expected syntax intrinsic(@llvm.whatever)");
2017 std::string Name = Token.stringValue();
2020 if (expectAndConsume(MIToken::rparen))
2021 return error("expected ')' to terminate intrinsic name");
2023 // Find out what intrinsic we're dealing with, first try the global namespace
2024 // and then the target's private intrinsics if that fails.
2025 const TargetIntrinsicInfo *TII = MF.getTarget().getIntrinsicInfo();
2026 Intrinsic::ID ID = Function::lookupIntrinsicID(Name);
2027 if (ID == Intrinsic::not_intrinsic && TII)
2028 ID = static_cast<Intrinsic::ID>(TII->lookupName(Name));
2030 if (ID == Intrinsic::not_intrinsic)
2031 return error("unknown intrinsic name");
2032 Dest = MachineOperand::CreateIntrinsicID(ID);
2037 bool MIParser::parsePredicateOperand(MachineOperand &Dest) {
2038 assert(Token.is(MIToken::kw_intpred) || Token.is(MIToken::kw_floatpred));
2039 bool IsFloat = Token.is(MIToken::kw_floatpred);
2042 if (expectAndConsume(MIToken::lparen))
2043 return error("expected syntax intpred(whatever) or floatpred(whatever");
2045 if (Token.isNot(MIToken::Identifier))
2046 return error("whatever");
2048 CmpInst::Predicate Pred;
2050 Pred = StringSwitch<CmpInst::Predicate>(Token.stringValue())
2051 .Case("false", CmpInst::FCMP_FALSE)
2052 .Case("oeq", CmpInst::FCMP_OEQ)
2053 .Case("ogt", CmpInst::FCMP_OGT)
2054 .Case("oge", CmpInst::FCMP_OGE)
2055 .Case("olt", CmpInst::FCMP_OLT)
2056 .Case("ole", CmpInst::FCMP_OLE)
2057 .Case("one", CmpInst::FCMP_ONE)
2058 .Case("ord", CmpInst::FCMP_ORD)
2059 .Case("uno", CmpInst::FCMP_UNO)
2060 .Case("ueq", CmpInst::FCMP_UEQ)
2061 .Case("ugt", CmpInst::FCMP_UGT)
2062 .Case("uge", CmpInst::FCMP_UGE)
2063 .Case("ult", CmpInst::FCMP_ULT)
2064 .Case("ule", CmpInst::FCMP_ULE)
2065 .Case("une", CmpInst::FCMP_UNE)
2066 .Case("true", CmpInst::FCMP_TRUE)
2067 .Default(CmpInst::BAD_FCMP_PREDICATE);
2068 if (!CmpInst::isFPPredicate(Pred))
2069 return error("invalid floating-point predicate");
2071 Pred = StringSwitch<CmpInst::Predicate>(Token.stringValue())
2072 .Case("eq", CmpInst::ICMP_EQ)
2073 .Case("ne", CmpInst::ICMP_NE)
2074 .Case("sgt", CmpInst::ICMP_SGT)
2075 .Case("sge", CmpInst::ICMP_SGE)
2076 .Case("slt", CmpInst::ICMP_SLT)
2077 .Case("sle", CmpInst::ICMP_SLE)
2078 .Case("ugt", CmpInst::ICMP_UGT)
2079 .Case("uge", CmpInst::ICMP_UGE)
2080 .Case("ult", CmpInst::ICMP_ULT)
2081 .Case("ule", CmpInst::ICMP_ULE)
2082 .Default(CmpInst::BAD_ICMP_PREDICATE);
2083 if (!CmpInst::isIntPredicate(Pred))
2084 return error("invalid integer predicate");
2088 Dest = MachineOperand::CreatePredicate(Pred);
2089 if (expectAndConsume(MIToken::rparen))
2090 return error("predicate should be terminated by ')'.");
2095 bool MIParser::parseTargetIndexOperand(MachineOperand &Dest) {
2096 assert(Token.is(MIToken::kw_target_index));
2098 if (expectAndConsume(MIToken::lparen))
2100 if (Token.isNot(MIToken::Identifier))
2101 return error("expected the name of the target index");
2103 if (getTargetIndex(Token.stringValue(), Index))
2104 return error("use of undefined target index '" + Token.stringValue() + "'");
2106 if (expectAndConsume(MIToken::rparen))
2108 Dest = MachineOperand::CreateTargetIndex(unsigned(Index), /*Offset=*/0);
2109 if (parseOperandsOffset(Dest))
2114 bool MIParser::parseCustomRegisterMaskOperand(MachineOperand &Dest) {
2115 assert(Token.stringValue() == "CustomRegMask" && "Expected a custom RegMask");
2117 if (expectAndConsume(MIToken::lparen))
2120 uint32_t *Mask = MF.allocateRegMask();
2122 if (Token.isNot(MIToken::NamedRegister))
2123 return error("expected a named register");
2125 if (parseNamedRegister(Reg))
2128 Mask[Reg / 32] |= 1U << (Reg % 32);
2129 // TODO: Report an error if the same register is used more than once.
2130 if (Token.isNot(MIToken::comma))
2135 if (expectAndConsume(MIToken::rparen))
2137 Dest = MachineOperand::CreateRegMask(Mask);
2141 bool MIParser::parseLiveoutRegisterMaskOperand(MachineOperand &Dest) {
2142 assert(Token.is(MIToken::kw_liveout));
2143 uint32_t *Mask = MF.allocateRegMask();
2145 if (expectAndConsume(MIToken::lparen))
2148 if (Token.isNot(MIToken::NamedRegister))
2149 return error("expected a named register");
2151 if (parseNamedRegister(Reg))
2154 Mask[Reg / 32] |= 1U << (Reg % 32);
2155 // TODO: Report an error if the same register is used more than once.
2156 if (Token.isNot(MIToken::comma))
2160 if (expectAndConsume(MIToken::rparen))
2162 Dest = MachineOperand::CreateRegLiveOut(Mask);
2166 bool MIParser::parseMachineOperand(MachineOperand &Dest,
2167 Optional<unsigned> &TiedDefIdx) {
2168 switch (Token.kind()) {
2169 case MIToken::kw_implicit:
2170 case MIToken::kw_implicit_define:
2171 case MIToken::kw_def:
2172 case MIToken::kw_dead:
2173 case MIToken::kw_killed:
2174 case MIToken::kw_undef:
2175 case MIToken::kw_internal:
2176 case MIToken::kw_early_clobber:
2177 case MIToken::kw_debug_use:
2178 case MIToken::kw_renamable:
2179 case MIToken::underscore:
2180 case MIToken::NamedRegister:
2181 case MIToken::VirtualRegister:
2182 case MIToken::NamedVirtualRegister:
2183 return parseRegisterOperand(Dest, TiedDefIdx);
2184 case MIToken::IntegerLiteral:
2185 return parseImmediateOperand(Dest);
2186 case MIToken::kw_half:
2187 case MIToken::kw_float:
2188 case MIToken::kw_double:
2189 case MIToken::kw_x86_fp80:
2190 case MIToken::kw_fp128:
2191 case MIToken::kw_ppc_fp128:
2192 return parseFPImmediateOperand(Dest);
2193 case MIToken::MachineBasicBlock:
2194 return parseMBBOperand(Dest);
2195 case MIToken::StackObject:
2196 return parseStackObjectOperand(Dest);
2197 case MIToken::FixedStackObject:
2198 return parseFixedStackObjectOperand(Dest);
2199 case MIToken::GlobalValue:
2200 case MIToken::NamedGlobalValue:
2201 return parseGlobalAddressOperand(Dest);
2202 case MIToken::ConstantPoolItem:
2203 return parseConstantPoolIndexOperand(Dest);
2204 case MIToken::JumpTableIndex:
2205 return parseJumpTableIndexOperand(Dest);
2206 case MIToken::ExternalSymbol:
2207 return parseExternalSymbolOperand(Dest);
2208 case MIToken::MCSymbol:
2209 return parseMCSymbolOperand(Dest);
2210 case MIToken::SubRegisterIndex:
2211 return parseSubRegisterIndexOperand(Dest);
2212 case MIToken::md_diexpr:
2213 case MIToken::exclaim:
2214 return parseMetadataOperand(Dest);
2215 case MIToken::kw_cfi_same_value:
2216 case MIToken::kw_cfi_offset:
2217 case MIToken::kw_cfi_rel_offset:
2218 case MIToken::kw_cfi_def_cfa_register:
2219 case MIToken::kw_cfi_def_cfa_offset:
2220 case MIToken::kw_cfi_adjust_cfa_offset:
2221 case MIToken::kw_cfi_escape:
2222 case MIToken::kw_cfi_def_cfa:
2223 case MIToken::kw_cfi_register:
2224 case MIToken::kw_cfi_remember_state:
2225 case MIToken::kw_cfi_restore:
2226 case MIToken::kw_cfi_restore_state:
2227 case MIToken::kw_cfi_undefined:
2228 case MIToken::kw_cfi_window_save:
2229 case MIToken::kw_cfi_aarch64_negate_ra_sign_state:
2230 return parseCFIOperand(Dest);
2231 case MIToken::kw_blockaddress:
2232 return parseBlockAddressOperand(Dest);
2233 case MIToken::kw_intrinsic:
2234 return parseIntrinsicOperand(Dest);
2235 case MIToken::kw_target_index:
2236 return parseTargetIndexOperand(Dest);
2237 case MIToken::kw_liveout:
2238 return parseLiveoutRegisterMaskOperand(Dest);
2239 case MIToken::kw_floatpred:
2240 case MIToken::kw_intpred:
2241 return parsePredicateOperand(Dest);
2242 case MIToken::Error:
2244 case MIToken::Identifier:
2245 if (const auto *RegMask = getRegMask(Token.stringValue())) {
2246 Dest = MachineOperand::CreateRegMask(RegMask);
2249 } else if (Token.stringValue() == "CustomRegMask") {
2250 return parseCustomRegisterMaskOperand(Dest);
2252 return parseTypedImmediateOperand(Dest);
2254 // FIXME: Parse the MCSymbol machine operand.
2255 return error("expected a machine operand");
2260 bool MIParser::parseMachineOperandAndTargetFlags(
2261 MachineOperand &Dest, Optional<unsigned> &TiedDefIdx) {
2263 bool HasTargetFlags = false;
2264 if (Token.is(MIToken::kw_target_flags)) {
2265 HasTargetFlags = true;
2267 if (expectAndConsume(MIToken::lparen))
2269 if (Token.isNot(MIToken::Identifier))
2270 return error("expected the name of the target flag");
2271 if (getDirectTargetFlag(Token.stringValue(), TF)) {
2272 if (getBitmaskTargetFlag(Token.stringValue(), TF))
2273 return error("use of undefined target flag '" + Token.stringValue() +
2277 while (Token.is(MIToken::comma)) {
2279 if (Token.isNot(MIToken::Identifier))
2280 return error("expected the name of the target flag");
2281 unsigned BitFlag = 0;
2282 if (getBitmaskTargetFlag(Token.stringValue(), BitFlag))
2283 return error("use of undefined target flag '" + Token.stringValue() +
2285 // TODO: Report an error when using a duplicate bit target flag.
2289 if (expectAndConsume(MIToken::rparen))
2292 auto Loc = Token.location();
2293 if (parseMachineOperand(Dest, TiedDefIdx))
2295 if (!HasTargetFlags)
2298 return error(Loc, "register operands can't have target flags");
2299 Dest.setTargetFlags(TF);
2303 bool MIParser::parseOffset(int64_t &Offset) {
2304 if (Token.isNot(MIToken::plus) && Token.isNot(MIToken::minus))
2306 StringRef Sign = Token.range();
2307 bool IsNegative = Token.is(MIToken::minus);
2309 if (Token.isNot(MIToken::IntegerLiteral))
2310 return error("expected an integer literal after '" + Sign + "'");
2311 if (Token.integerValue().getMinSignedBits() > 64)
2312 return error("expected 64-bit integer (too large)");
2313 Offset = Token.integerValue().getExtValue();
2320 bool MIParser::parseAlignment(unsigned &Alignment) {
2321 assert(Token.is(MIToken::kw_align));
2323 if (Token.isNot(MIToken::IntegerLiteral) || Token.integerValue().isSigned())
2324 return error("expected an integer literal after 'align'");
2325 if (getUnsigned(Alignment))
2331 bool MIParser::parseAddrspace(unsigned &Addrspace) {
2332 assert(Token.is(MIToken::kw_addrspace));
2334 if (Token.isNot(MIToken::IntegerLiteral) || Token.integerValue().isSigned())
2335 return error("expected an integer literal after 'addrspace'");
2336 if (getUnsigned(Addrspace))
2342 bool MIParser::parseOperandsOffset(MachineOperand &Op) {
2344 if (parseOffset(Offset))
2346 Op.setOffset(Offset);
2350 bool MIParser::parseIRValue(const Value *&V) {
2351 switch (Token.kind()) {
2352 case MIToken::NamedIRValue: {
2353 V = MF.getFunction().getValueSymbolTable()->lookup(Token.stringValue());
2356 case MIToken::IRValue: {
2357 unsigned SlotNumber = 0;
2358 if (getUnsigned(SlotNumber))
2360 V = getIRValue(SlotNumber);
2363 case MIToken::NamedGlobalValue:
2364 case MIToken::GlobalValue: {
2365 GlobalValue *GV = nullptr;
2366 if (parseGlobalValue(GV))
2371 case MIToken::QuotedIRValue: {
2372 const Constant *C = nullptr;
2373 if (parseIRConstant(Token.location(), Token.stringValue(), C))
2379 llvm_unreachable("The current token should be an IR block reference");
2382 return error(Twine("use of undefined IR value '") + Token.range() + "'");
2386 bool MIParser::getUint64(uint64_t &Result) {
2387 if (Token.hasIntegerValue()) {
2388 if (Token.integerValue().getActiveBits() > 64)
2389 return error("expected 64-bit integer (too large)");
2390 Result = Token.integerValue().getZExtValue();
2393 if (Token.is(MIToken::HexLiteral)) {
2397 if (A.getBitWidth() > 64)
2398 return error("expected 64-bit integer (too large)");
2399 Result = A.getZExtValue();
2405 bool MIParser::getHexUint(APInt &Result) {
2406 assert(Token.is(MIToken::HexLiteral));
2407 StringRef S = Token.range();
2408 assert(S[0] == '0' && tolower(S[1]) == 'x');
2409 // This could be a floating point literal with a special prefix.
2410 if (!isxdigit(S[2]))
2412 StringRef V = S.substr(2);
2413 APInt A(V.size()*4, V, 16);
2415 // If A is 0, then A.getActiveBits() is 0. This isn't a valid bitwidth. Make
2416 // sure it isn't the case before constructing result.
2417 unsigned NumBits = (A == 0) ? 32 : A.getActiveBits();
2418 Result = APInt(NumBits, ArrayRef<uint64_t>(A.getRawData(), A.getNumWords()));
2422 bool MIParser::parseMemoryOperandFlag(MachineMemOperand::Flags &Flags) {
2423 const auto OldFlags = Flags;
2424 switch (Token.kind()) {
2425 case MIToken::kw_volatile:
2426 Flags |= MachineMemOperand::MOVolatile;
2428 case MIToken::kw_non_temporal:
2429 Flags |= MachineMemOperand::MONonTemporal;
2431 case MIToken::kw_dereferenceable:
2432 Flags |= MachineMemOperand::MODereferenceable;
2434 case MIToken::kw_invariant:
2435 Flags |= MachineMemOperand::MOInvariant;
2437 case MIToken::StringConstant: {
2438 MachineMemOperand::Flags TF;
2439 if (getMMOTargetFlag(Token.stringValue(), TF))
2440 return error("use of undefined target MMO flag '" + Token.stringValue() +
2446 llvm_unreachable("The current token should be a memory operand flag");
2448 if (OldFlags == Flags)
2449 // We know that the same flag is specified more than once when the flags
2450 // weren't modified.
2451 return error("duplicate '" + Token.stringValue() + "' memory operand flag");
2456 bool MIParser::parseMemoryPseudoSourceValue(const PseudoSourceValue *&PSV) {
2457 switch (Token.kind()) {
2458 case MIToken::kw_stack:
2459 PSV = MF.getPSVManager().getStack();
2461 case MIToken::kw_got:
2462 PSV = MF.getPSVManager().getGOT();
2464 case MIToken::kw_jump_table:
2465 PSV = MF.getPSVManager().getJumpTable();
2467 case MIToken::kw_constant_pool:
2468 PSV = MF.getPSVManager().getConstantPool();
2470 case MIToken::FixedStackObject: {
2472 if (parseFixedStackFrameIndex(FI))
2474 PSV = MF.getPSVManager().getFixedStack(FI);
2475 // The token was already consumed, so use return here instead of break.
2478 case MIToken::StackObject: {
2480 if (parseStackFrameIndex(FI))
2482 PSV = MF.getPSVManager().getFixedStack(FI);
2483 // The token was already consumed, so use return here instead of break.
2486 case MIToken::kw_call_entry:
2488 switch (Token.kind()) {
2489 case MIToken::GlobalValue:
2490 case MIToken::NamedGlobalValue: {
2491 GlobalValue *GV = nullptr;
2492 if (parseGlobalValue(GV))
2494 PSV = MF.getPSVManager().getGlobalValueCallEntry(GV);
2497 case MIToken::ExternalSymbol:
2498 PSV = MF.getPSVManager().getExternalSymbolCallEntry(
2499 MF.createExternalSymbolName(Token.stringValue()));
2503 "expected a global value or an external symbol after 'call-entry'");
2507 llvm_unreachable("The current token should be pseudo source value");
2513 bool MIParser::parseMachinePointerInfo(MachinePointerInfo &Dest) {
2514 if (Token.is(MIToken::kw_constant_pool) || Token.is(MIToken::kw_stack) ||
2515 Token.is(MIToken::kw_got) || Token.is(MIToken::kw_jump_table) ||
2516 Token.is(MIToken::FixedStackObject) || Token.is(MIToken::StackObject) ||
2517 Token.is(MIToken::kw_call_entry)) {
2518 const PseudoSourceValue *PSV = nullptr;
2519 if (parseMemoryPseudoSourceValue(PSV))
2522 if (parseOffset(Offset))
2524 Dest = MachinePointerInfo(PSV, Offset);
2527 if (Token.isNot(MIToken::NamedIRValue) && Token.isNot(MIToken::IRValue) &&
2528 Token.isNot(MIToken::GlobalValue) &&
2529 Token.isNot(MIToken::NamedGlobalValue) &&
2530 Token.isNot(MIToken::QuotedIRValue))
2531 return error("expected an IR value reference");
2532 const Value *V = nullptr;
2533 if (parseIRValue(V))
2535 if (!V->getType()->isPointerTy())
2536 return error("expected a pointer IR value");
2539 if (parseOffset(Offset))
2541 Dest = MachinePointerInfo(V, Offset);
2545 bool MIParser::parseOptionalScope(LLVMContext &Context,
2546 SyncScope::ID &SSID) {
2547 SSID = SyncScope::System;
2548 if (Token.is(MIToken::Identifier) && Token.stringValue() == "syncscope") {
2550 if (expectAndConsume(MIToken::lparen))
2551 return error("expected '(' in syncscope");
2554 if (parseStringConstant(SSN))
2557 SSID = Context.getOrInsertSyncScopeID(SSN);
2558 if (expectAndConsume(MIToken::rparen))
2559 return error("expected ')' in syncscope");
2565 bool MIParser::parseOptionalAtomicOrdering(AtomicOrdering &Order) {
2566 Order = AtomicOrdering::NotAtomic;
2567 if (Token.isNot(MIToken::Identifier))
2570 Order = StringSwitch<AtomicOrdering>(Token.stringValue())
2571 .Case("unordered", AtomicOrdering::Unordered)
2572 .Case("monotonic", AtomicOrdering::Monotonic)
2573 .Case("acquire", AtomicOrdering::Acquire)
2574 .Case("release", AtomicOrdering::Release)
2575 .Case("acq_rel", AtomicOrdering::AcquireRelease)
2576 .Case("seq_cst", AtomicOrdering::SequentiallyConsistent)
2577 .Default(AtomicOrdering::NotAtomic);
2579 if (Order != AtomicOrdering::NotAtomic) {
2584 return error("expected an atomic scope, ordering or a size specification");
2587 bool MIParser::parseMachineMemoryOperand(MachineMemOperand *&Dest) {
2588 if (expectAndConsume(MIToken::lparen))
2590 MachineMemOperand::Flags Flags = MachineMemOperand::MONone;
2591 while (Token.isMemoryOperandFlag()) {
2592 if (parseMemoryOperandFlag(Flags))
2595 if (Token.isNot(MIToken::Identifier) ||
2596 (Token.stringValue() != "load" && Token.stringValue() != "store"))
2597 return error("expected 'load' or 'store' memory operation");
2598 if (Token.stringValue() == "load")
2599 Flags |= MachineMemOperand::MOLoad;
2601 Flags |= MachineMemOperand::MOStore;
2604 // Optional 'store' for operands that both load and store.
2605 if (Token.is(MIToken::Identifier) && Token.stringValue() == "store") {
2606 Flags |= MachineMemOperand::MOStore;
2610 // Optional synchronization scope.
2612 if (parseOptionalScope(MF.getFunction().getContext(), SSID))
2615 // Up to two atomic orderings (cmpxchg provides guarantees on failure).
2616 AtomicOrdering Order, FailureOrder;
2617 if (parseOptionalAtomicOrdering(Order))
2620 if (parseOptionalAtomicOrdering(FailureOrder))
2623 if (Token.isNot(MIToken::IntegerLiteral) &&
2624 Token.isNot(MIToken::kw_unknown_size))
2625 return error("expected the size integer literal or 'unknown-size' after "
2626 "memory operation");
2628 if (Token.is(MIToken::IntegerLiteral)) {
2629 if (getUint64(Size))
2631 } else if (Token.is(MIToken::kw_unknown_size)) {
2632 Size = MemoryLocation::UnknownSize;
2636 MachinePointerInfo Ptr = MachinePointerInfo();
2637 if (Token.is(MIToken::Identifier)) {
2639 ((Flags & MachineMemOperand::MOLoad) &&
2640 (Flags & MachineMemOperand::MOStore))
2642 : Flags & MachineMemOperand::MOLoad ? "from" : "into";
2643 if (Token.stringValue() != Word)
2644 return error(Twine("expected '") + Word + "'");
2647 if (parseMachinePointerInfo(Ptr))
2650 unsigned BaseAlignment = (Size != MemoryLocation::UnknownSize ? Size : 1);
2652 MDNode *Range = nullptr;
2653 while (consumeIfPresent(MIToken::comma)) {
2654 switch (Token.kind()) {
2655 case MIToken::kw_align:
2656 if (parseAlignment(BaseAlignment))
2659 case MIToken::kw_addrspace:
2660 if (parseAddrspace(Ptr.AddrSpace))
2663 case MIToken::md_tbaa:
2665 if (parseMDNode(AAInfo.TBAA))
2668 case MIToken::md_alias_scope:
2670 if (parseMDNode(AAInfo.Scope))
2673 case MIToken::md_noalias:
2675 if (parseMDNode(AAInfo.NoAlias))
2678 case MIToken::md_range:
2680 if (parseMDNode(Range))
2683 // TODO: Report an error on duplicate metadata nodes.
2685 return error("expected 'align' or '!tbaa' or '!alias.scope' or "
2686 "'!noalias' or '!range'");
2689 if (expectAndConsume(MIToken::rparen))
2691 Dest = MF.getMachineMemOperand(Ptr, Flags, Size, BaseAlignment, AAInfo, Range,
2692 SSID, Order, FailureOrder);
2696 bool MIParser::parsePreOrPostInstrSymbol(MCSymbol *&Symbol) {
2697 assert((Token.is(MIToken::kw_pre_instr_symbol) ||
2698 Token.is(MIToken::kw_post_instr_symbol)) &&
2699 "Invalid token for a pre- post-instruction symbol!");
2701 if (Token.isNot(MIToken::MCSymbol))
2702 return error("expected a symbol after 'pre-instr-symbol'");
2703 Symbol = getOrCreateMCSymbol(Token.stringValue());
2705 if (Token.isNewlineOrEOF() || Token.is(MIToken::coloncolon) ||
2706 Token.is(MIToken::lbrace))
2708 if (Token.isNot(MIToken::comma))
2709 return error("expected ',' before the next machine operand");
2714 void MIParser::initNames2InstrOpCodes() {
2715 if (!Names2InstrOpCodes.empty())
2717 const auto *TII = MF.getSubtarget().getInstrInfo();
2718 assert(TII && "Expected target instruction info");
2719 for (unsigned I = 0, E = TII->getNumOpcodes(); I < E; ++I)
2720 Names2InstrOpCodes.insert(std::make_pair(StringRef(TII->getName(I)), I));
2723 bool MIParser::parseInstrName(StringRef InstrName, unsigned &OpCode) {
2724 initNames2InstrOpCodes();
2725 auto InstrInfo = Names2InstrOpCodes.find(InstrName);
2726 if (InstrInfo == Names2InstrOpCodes.end())
2728 OpCode = InstrInfo->getValue();
2732 void MIParser::initNames2Regs() {
2733 if (!Names2Regs.empty())
2735 // The '%noreg' register is the register 0.
2736 Names2Regs.insert(std::make_pair("noreg", 0));
2737 const auto *TRI = MF.getSubtarget().getRegisterInfo();
2738 assert(TRI && "Expected target register info");
2739 for (unsigned I = 0, E = TRI->getNumRegs(); I < E; ++I) {
2741 Names2Regs.insert(std::make_pair(StringRef(TRI->getName(I)).lower(), I))
2744 assert(WasInserted && "Expected registers to be unique case-insensitively");
2748 bool MIParser::getRegisterByName(StringRef RegName, unsigned &Reg) {
2750 auto RegInfo = Names2Regs.find(RegName);
2751 if (RegInfo == Names2Regs.end())
2753 Reg = RegInfo->getValue();
2757 void MIParser::initNames2RegMasks() {
2758 if (!Names2RegMasks.empty())
2760 const auto *TRI = MF.getSubtarget().getRegisterInfo();
2761 assert(TRI && "Expected target register info");
2762 ArrayRef<const uint32_t *> RegMasks = TRI->getRegMasks();
2763 ArrayRef<const char *> RegMaskNames = TRI->getRegMaskNames();
2764 assert(RegMasks.size() == RegMaskNames.size());
2765 for (size_t I = 0, E = RegMasks.size(); I < E; ++I)
2766 Names2RegMasks.insert(
2767 std::make_pair(StringRef(RegMaskNames[I]).lower(), RegMasks[I]));
2770 const uint32_t *MIParser::getRegMask(StringRef Identifier) {
2771 initNames2RegMasks();
2772 auto RegMaskInfo = Names2RegMasks.find(Identifier);
2773 if (RegMaskInfo == Names2RegMasks.end())
2775 return RegMaskInfo->getValue();
2778 void MIParser::initNames2SubRegIndices() {
2779 if (!Names2SubRegIndices.empty())
2781 const TargetRegisterInfo *TRI = MF.getSubtarget().getRegisterInfo();
2782 for (unsigned I = 1, E = TRI->getNumSubRegIndices(); I < E; ++I)
2783 Names2SubRegIndices.insert(
2784 std::make_pair(StringRef(TRI->getSubRegIndexName(I)).lower(), I));
2787 unsigned MIParser::getSubRegIndex(StringRef Name) {
2788 initNames2SubRegIndices();
2789 auto SubRegInfo = Names2SubRegIndices.find(Name);
2790 if (SubRegInfo == Names2SubRegIndices.end())
2792 return SubRegInfo->getValue();
2795 static void initSlots2BasicBlocks(
2797 DenseMap<unsigned, const BasicBlock *> &Slots2BasicBlocks) {
2798 ModuleSlotTracker MST(F.getParent(), /*ShouldInitializeAllMetadata=*/false);
2799 MST.incorporateFunction(F);
2800 for (auto &BB : F) {
2803 int Slot = MST.getLocalSlot(&BB);
2806 Slots2BasicBlocks.insert(std::make_pair(unsigned(Slot), &BB));
2810 static const BasicBlock *getIRBlockFromSlot(
2812 const DenseMap<unsigned, const BasicBlock *> &Slots2BasicBlocks) {
2813 auto BlockInfo = Slots2BasicBlocks.find(Slot);
2814 if (BlockInfo == Slots2BasicBlocks.end())
2816 return BlockInfo->second;
2819 const BasicBlock *MIParser::getIRBlock(unsigned Slot) {
2820 if (Slots2BasicBlocks.empty())
2821 initSlots2BasicBlocks(MF.getFunction(), Slots2BasicBlocks);
2822 return getIRBlockFromSlot(Slot, Slots2BasicBlocks);
2825 const BasicBlock *MIParser::getIRBlock(unsigned Slot, const Function &F) {
2826 if (&F == &MF.getFunction())
2827 return getIRBlock(Slot);
2828 DenseMap<unsigned, const BasicBlock *> CustomSlots2BasicBlocks;
2829 initSlots2BasicBlocks(F, CustomSlots2BasicBlocks);
2830 return getIRBlockFromSlot(Slot, CustomSlots2BasicBlocks);
2833 static void mapValueToSlot(const Value *V, ModuleSlotTracker &MST,
2834 DenseMap<unsigned, const Value *> &Slots2Values) {
2835 int Slot = MST.getLocalSlot(V);
2838 Slots2Values.insert(std::make_pair(unsigned(Slot), V));
2841 /// Creates the mapping from slot numbers to function's unnamed IR values.
2842 static void initSlots2Values(const Function &F,
2843 DenseMap<unsigned, const Value *> &Slots2Values) {
2844 ModuleSlotTracker MST(F.getParent(), /*ShouldInitializeAllMetadata=*/false);
2845 MST.incorporateFunction(F);
2846 for (const auto &Arg : F.args())
2847 mapValueToSlot(&Arg, MST, Slots2Values);
2848 for (const auto &BB : F) {
2849 mapValueToSlot(&BB, MST, Slots2Values);
2850 for (const auto &I : BB)
2851 mapValueToSlot(&I, MST, Slots2Values);
2855 const Value *MIParser::getIRValue(unsigned Slot) {
2856 if (Slots2Values.empty())
2857 initSlots2Values(MF.getFunction(), Slots2Values);
2858 auto ValueInfo = Slots2Values.find(Slot);
2859 if (ValueInfo == Slots2Values.end())
2861 return ValueInfo->second;
2864 void MIParser::initNames2TargetIndices() {
2865 if (!Names2TargetIndices.empty())
2867 const auto *TII = MF.getSubtarget().getInstrInfo();
2868 assert(TII && "Expected target instruction info");
2869 auto Indices = TII->getSerializableTargetIndices();
2870 for (const auto &I : Indices)
2871 Names2TargetIndices.insert(std::make_pair(StringRef(I.second), I.first));
2874 bool MIParser::getTargetIndex(StringRef Name, int &Index) {
2875 initNames2TargetIndices();
2876 auto IndexInfo = Names2TargetIndices.find(Name);
2877 if (IndexInfo == Names2TargetIndices.end())
2879 Index = IndexInfo->second;
2883 void MIParser::initNames2DirectTargetFlags() {
2884 if (!Names2DirectTargetFlags.empty())
2886 const auto *TII = MF.getSubtarget().getInstrInfo();
2887 assert(TII && "Expected target instruction info");
2888 auto Flags = TII->getSerializableDirectMachineOperandTargetFlags();
2889 for (const auto &I : Flags)
2890 Names2DirectTargetFlags.insert(
2891 std::make_pair(StringRef(I.second), I.first));
2894 bool MIParser::getDirectTargetFlag(StringRef Name, unsigned &Flag) {
2895 initNames2DirectTargetFlags();
2896 auto FlagInfo = Names2DirectTargetFlags.find(Name);
2897 if (FlagInfo == Names2DirectTargetFlags.end())
2899 Flag = FlagInfo->second;
2903 void MIParser::initNames2BitmaskTargetFlags() {
2904 if (!Names2BitmaskTargetFlags.empty())
2906 const auto *TII = MF.getSubtarget().getInstrInfo();
2907 assert(TII && "Expected target instruction info");
2908 auto Flags = TII->getSerializableBitmaskMachineOperandTargetFlags();
2909 for (const auto &I : Flags)
2910 Names2BitmaskTargetFlags.insert(
2911 std::make_pair(StringRef(I.second), I.first));
2914 bool MIParser::getBitmaskTargetFlag(StringRef Name, unsigned &Flag) {
2915 initNames2BitmaskTargetFlags();
2916 auto FlagInfo = Names2BitmaskTargetFlags.find(Name);
2917 if (FlagInfo == Names2BitmaskTargetFlags.end())
2919 Flag = FlagInfo->second;
2923 void MIParser::initNames2MMOTargetFlags() {
2924 if (!Names2MMOTargetFlags.empty())
2926 const auto *TII = MF.getSubtarget().getInstrInfo();
2927 assert(TII && "Expected target instruction info");
2928 auto Flags = TII->getSerializableMachineMemOperandTargetFlags();
2929 for (const auto &I : Flags)
2930 Names2MMOTargetFlags.insert(
2931 std::make_pair(StringRef(I.second), I.first));
2934 bool MIParser::getMMOTargetFlag(StringRef Name,
2935 MachineMemOperand::Flags &Flag) {
2936 initNames2MMOTargetFlags();
2937 auto FlagInfo = Names2MMOTargetFlags.find(Name);
2938 if (FlagInfo == Names2MMOTargetFlags.end())
2940 Flag = FlagInfo->second;
2944 MCSymbol *MIParser::getOrCreateMCSymbol(StringRef Name) {
2945 // FIXME: Currently we can't recognize temporary or local symbols and call all
2946 // of the appropriate forms to create them. However, this handles basic cases
2947 // well as most of the special aspects are recognized by a prefix on their
2948 // name, and the input names should already be unique. For test cases, keeping
2949 // the symbol name out of the symbol table isn't terribly important.
2950 return MF.getContext().getOrCreateSymbol(Name);
2953 bool MIParser::parseStringConstant(std::string &Result) {
2954 if (Token.isNot(MIToken::StringConstant))
2955 return error("expected string constant");
2956 Result = Token.stringValue();
2961 bool llvm::parseMachineBasicBlockDefinitions(PerFunctionMIParsingState &PFS,
2963 SMDiagnostic &Error) {
2964 return MIParser(PFS, Error, Src).parseBasicBlockDefinitions(PFS.MBBSlots);
2967 bool llvm::parseMachineInstructions(PerFunctionMIParsingState &PFS,
2968 StringRef Src, SMDiagnostic &Error) {
2969 return MIParser(PFS, Error, Src).parseBasicBlocks();
2972 bool llvm::parseMBBReference(PerFunctionMIParsingState &PFS,
2973 MachineBasicBlock *&MBB, StringRef Src,
2974 SMDiagnostic &Error) {
2975 return MIParser(PFS, Error, Src).parseStandaloneMBB(MBB);
2978 bool llvm::parseRegisterReference(PerFunctionMIParsingState &PFS,
2979 unsigned &Reg, StringRef Src,
2980 SMDiagnostic &Error) {
2981 return MIParser(PFS, Error, Src).parseStandaloneRegister(Reg);
2984 bool llvm::parseNamedRegisterReference(PerFunctionMIParsingState &PFS,
2985 unsigned &Reg, StringRef Src,
2986 SMDiagnostic &Error) {
2987 return MIParser(PFS, Error, Src).parseStandaloneNamedRegister(Reg);
2990 bool llvm::parseVirtualRegisterReference(PerFunctionMIParsingState &PFS,
2991 VRegInfo *&Info, StringRef Src,
2992 SMDiagnostic &Error) {
2993 return MIParser(PFS, Error, Src).parseStandaloneVirtualRegister(Info);
2996 bool llvm::parseStackObjectReference(PerFunctionMIParsingState &PFS,
2997 int &FI, StringRef Src,
2998 SMDiagnostic &Error) {
2999 return MIParser(PFS, Error, Src).parseStandaloneStackObject(FI);
3002 bool llvm::parseMDNode(PerFunctionMIParsingState &PFS,
3003 MDNode *&Node, StringRef Src, SMDiagnostic &Error) {
3004 return MIParser(PFS, Error, Src).parseStandaloneMDNode(Node);