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/StringMap.h"
17 #include "llvm/AsmParser/Parser.h"
18 #include "llvm/AsmParser/SlotMapping.h"
19 #include "llvm/CodeGen/MachineBasicBlock.h"
20 #include "llvm/CodeGen/MachineFunction.h"
21 #include "llvm/CodeGen/MachineFrameInfo.h"
22 #include "llvm/CodeGen/MachineInstr.h"
23 #include "llvm/CodeGen/MachineInstrBuilder.h"
24 #include "llvm/CodeGen/MachineMemOperand.h"
25 #include "llvm/CodeGen/MachineModuleInfo.h"
26 #include "llvm/IR/Instructions.h"
27 #include "llvm/IR/Constants.h"
28 #include "llvm/IR/Module.h"
29 #include "llvm/IR/ModuleSlotTracker.h"
30 #include "llvm/IR/ValueSymbolTable.h"
31 #include "llvm/Support/raw_ostream.h"
32 #include "llvm/Support/SourceMgr.h"
33 #include "llvm/Target/TargetSubtargetInfo.h"
34 #include "llvm/Target/TargetInstrInfo.h"
40 /// A wrapper struct around the 'MachineOperand' struct that includes a source
42 struct MachineOperandWithLocation {
43 MachineOperand Operand;
44 StringRef::iterator Begin;
45 StringRef::iterator End;
47 MachineOperandWithLocation(const MachineOperand &Operand,
48 StringRef::iterator Begin, StringRef::iterator End)
49 : Operand(Operand), Begin(Begin), End(End) {}
56 StringRef Source, CurrentSource;
58 const PerFunctionMIParsingState &PFS;
59 /// Maps from indices to unnamed global values and metadata nodes.
60 const SlotMapping &IRSlots;
61 /// Maps from instruction names to op codes.
62 StringMap<unsigned> Names2InstrOpCodes;
63 /// Maps from register names to registers.
64 StringMap<unsigned> Names2Regs;
65 /// Maps from register mask names to register masks.
66 StringMap<const uint32_t *> Names2RegMasks;
67 /// Maps from subregister names to subregister indices.
68 StringMap<unsigned> Names2SubRegIndices;
69 /// Maps from slot numbers to function's unnamed basic blocks.
70 DenseMap<unsigned, const BasicBlock *> Slots2BasicBlocks;
71 /// Maps from target index names to target indices.
72 StringMap<int> Names2TargetIndices;
73 /// Maps from direct target flag names to the direct target flag values.
74 StringMap<unsigned> Names2DirectTargetFlags;
77 MIParser(SourceMgr &SM, MachineFunction &MF, SMDiagnostic &Error,
78 StringRef Source, const PerFunctionMIParsingState &PFS,
79 const SlotMapping &IRSlots);
83 /// Report an error at the current location with the given message.
85 /// This function always return true.
86 bool error(const Twine &Msg);
88 /// Report an error at the given location with the given message.
90 /// This function always return true.
91 bool error(StringRef::iterator Loc, const Twine &Msg);
94 parseBasicBlockDefinitions(DenseMap<unsigned, MachineBasicBlock *> &MBBSlots);
95 bool parseBasicBlocks();
96 bool parse(MachineInstr *&MI);
97 bool parseStandaloneMBB(MachineBasicBlock *&MBB);
98 bool parseStandaloneNamedRegister(unsigned &Reg);
99 bool parseStandaloneVirtualRegister(unsigned &Reg);
102 parseBasicBlockDefinition(DenseMap<unsigned, MachineBasicBlock *> &MBBSlots);
103 bool parseBasicBlock(MachineBasicBlock &MBB);
104 bool parseBasicBlockLiveins(MachineBasicBlock &MBB);
105 bool parseBasicBlockSuccessors(MachineBasicBlock &MBB);
107 bool parseRegister(unsigned &Reg);
108 bool parseRegisterFlag(unsigned &Flags);
109 bool parseSubRegisterIndex(unsigned &SubReg);
110 bool parseRegisterOperand(MachineOperand &Dest, bool IsDef = false);
111 bool parseImmediateOperand(MachineOperand &Dest);
112 bool parseIRConstant(StringRef::iterator Loc, const Constant *&C);
113 bool parseTypedImmediateOperand(MachineOperand &Dest);
114 bool parseFPImmediateOperand(MachineOperand &Dest);
115 bool parseMBBReference(MachineBasicBlock *&MBB);
116 bool parseMBBOperand(MachineOperand &Dest);
117 bool parseStackObjectOperand(MachineOperand &Dest);
118 bool parseFixedStackFrameIndex(int &FI);
119 bool parseFixedStackObjectOperand(MachineOperand &Dest);
120 bool parseGlobalValue(GlobalValue *&GV);
121 bool parseGlobalAddressOperand(MachineOperand &Dest);
122 bool parseConstantPoolIndexOperand(MachineOperand &Dest);
123 bool parseJumpTableIndexOperand(MachineOperand &Dest);
124 bool parseExternalSymbolOperand(MachineOperand &Dest);
125 bool parseMDNode(MDNode *&Node);
126 bool parseMetadataOperand(MachineOperand &Dest);
127 bool parseCFIOffset(int &Offset);
128 bool parseCFIRegister(unsigned &Reg);
129 bool parseCFIOperand(MachineOperand &Dest);
130 bool parseIRBlock(BasicBlock *&BB, const Function &F);
131 bool parseBlockAddressOperand(MachineOperand &Dest);
132 bool parseTargetIndexOperand(MachineOperand &Dest);
133 bool parseLiveoutRegisterMaskOperand(MachineOperand &Dest);
134 bool parseMachineOperand(MachineOperand &Dest);
135 bool parseMachineOperandAndTargetFlags(MachineOperand &Dest);
136 bool parseOffset(int64_t &Offset);
137 bool parseAlignment(unsigned &Alignment);
138 bool parseOperandsOffset(MachineOperand &Op);
139 bool parseIRValue(Value *&V);
140 bool parseMemoryOperandFlag(unsigned &Flags);
141 bool parseMemoryPseudoSourceValue(const PseudoSourceValue *&PSV);
142 bool parseMachinePointerInfo(MachinePointerInfo &Dest);
143 bool parseMachineMemoryOperand(MachineMemOperand *&Dest);
146 /// Convert the integer literal in the current token into an unsigned integer.
148 /// Return true if an error occurred.
149 bool getUnsigned(unsigned &Result);
151 /// Convert the integer literal in the current token into an uint64.
153 /// Return true if an error occurred.
154 bool getUint64(uint64_t &Result);
156 /// If the current token is of the given kind, consume it and return false.
157 /// Otherwise report an error and return true.
158 bool expectAndConsume(MIToken::TokenKind TokenKind);
160 /// If the current token is of the given kind, consume it and return true.
161 /// Otherwise return false.
162 bool consumeIfPresent(MIToken::TokenKind TokenKind);
164 void initNames2InstrOpCodes();
166 /// Try to convert an instruction name to an opcode. Return true if the
167 /// instruction name is invalid.
168 bool parseInstrName(StringRef InstrName, unsigned &OpCode);
170 bool parseInstruction(unsigned &OpCode, unsigned &Flags);
172 bool verifyImplicitOperands(ArrayRef<MachineOperandWithLocation> Operands,
173 const MCInstrDesc &MCID);
175 void initNames2Regs();
177 /// Try to convert a register name to a register number. Return true if the
178 /// register name is invalid.
179 bool getRegisterByName(StringRef RegName, unsigned &Reg);
181 void initNames2RegMasks();
183 /// Check if the given identifier is a name of a register mask.
185 /// Return null if the identifier isn't a register mask.
186 const uint32_t *getRegMask(StringRef Identifier);
188 void initNames2SubRegIndices();
190 /// Check if the given identifier is a name of a subregister index.
192 /// Return 0 if the name isn't a subregister index class.
193 unsigned getSubRegIndex(StringRef Name);
195 const BasicBlock *getIRBlock(unsigned Slot);
196 const BasicBlock *getIRBlock(unsigned Slot, const Function &F);
198 void initNames2TargetIndices();
200 /// Try to convert a name of target index to the corresponding target index.
202 /// Return true if the name isn't a name of a target index.
203 bool getTargetIndex(StringRef Name, int &Index);
205 void initNames2DirectTargetFlags();
207 /// Try to convert a name of a direct target flag to the corresponding
210 /// Return true if the name isn't a name of a direct flag.
211 bool getDirectTargetFlag(StringRef Name, unsigned &Flag);
214 } // end anonymous namespace
216 MIParser::MIParser(SourceMgr &SM, MachineFunction &MF, SMDiagnostic &Error,
217 StringRef Source, const PerFunctionMIParsingState &PFS,
218 const SlotMapping &IRSlots)
219 : SM(SM), MF(MF), Error(Error), Source(Source), CurrentSource(Source),
220 PFS(PFS), IRSlots(IRSlots) {}
222 void MIParser::lex() {
223 CurrentSource = lexMIToken(
224 CurrentSource, Token,
225 [this](StringRef::iterator Loc, const Twine &Msg) { error(Loc, Msg); });
228 bool MIParser::error(const Twine &Msg) { return error(Token.location(), Msg); }
230 bool MIParser::error(StringRef::iterator Loc, const Twine &Msg) {
231 assert(Loc >= Source.data() && Loc <= (Source.data() + Source.size()));
232 const MemoryBuffer &Buffer = *SM.getMemoryBuffer(SM.getMainFileID());
233 if (Loc >= Buffer.getBufferStart() && Loc <= Buffer.getBufferEnd()) {
234 // Create an ordinary diagnostic when the source manager's buffer is the
236 Error = SM.GetMessage(SMLoc::getFromPointer(Loc), SourceMgr::DK_Error, Msg);
239 // Create a diagnostic for a YAML string literal.
240 Error = SMDiagnostic(SM, SMLoc(), Buffer.getBufferIdentifier(), 1,
241 Loc - Source.data(), SourceMgr::DK_Error, Msg.str(),
246 static const char *toString(MIToken::TokenKind TokenKind) {
254 case MIToken::lparen:
256 case MIToken::rparen:
259 return "<unknown token>";
263 bool MIParser::expectAndConsume(MIToken::TokenKind TokenKind) {
264 if (Token.isNot(TokenKind))
265 return error(Twine("expected ") + toString(TokenKind));
270 bool MIParser::consumeIfPresent(MIToken::TokenKind TokenKind) {
271 if (Token.isNot(TokenKind))
277 bool MIParser::parseBasicBlockDefinition(
278 DenseMap<unsigned, MachineBasicBlock *> &MBBSlots) {
279 assert(Token.is(MIToken::MachineBasicBlockLabel));
283 auto Loc = Token.location();
284 auto Name = Token.stringValue();
286 bool HasAddressTaken = false;
287 bool IsLandingPad = false;
288 unsigned Alignment = 0;
289 BasicBlock *BB = nullptr;
290 if (consumeIfPresent(MIToken::lparen)) {
292 // TODO: Report an error when multiple same attributes are specified.
293 switch (Token.kind()) {
294 case MIToken::kw_address_taken:
295 HasAddressTaken = true;
298 case MIToken::kw_landing_pad:
302 case MIToken::kw_align:
303 if (parseAlignment(Alignment))
306 case MIToken::IRBlock:
307 // TODO: Report an error when both name and ir block are specified.
308 if (parseIRBlock(BB, *MF.getFunction()))
315 } while (consumeIfPresent(MIToken::comma));
316 if (expectAndConsume(MIToken::rparen))
319 if (expectAndConsume(MIToken::colon))
323 BB = dyn_cast_or_null<BasicBlock>(
324 MF.getFunction()->getValueSymbolTable().lookup(Name));
326 return error(Loc, Twine("basic block '") + Name +
327 "' is not defined in the function '" +
330 auto *MBB = MF.CreateMachineBasicBlock(BB);
331 MF.insert(MF.end(), MBB);
332 bool WasInserted = MBBSlots.insert(std::make_pair(ID, MBB)).second;
334 return error(Loc, Twine("redefinition of machine basic block with id #") +
337 MBB->setAlignment(Alignment);
339 MBB->setHasAddressTaken();
340 MBB->setIsLandingPad(IsLandingPad);
344 bool MIParser::parseBasicBlockDefinitions(
345 DenseMap<unsigned, MachineBasicBlock *> &MBBSlots) {
347 // Skip until the first machine basic block.
348 while (Token.is(MIToken::Newline))
350 if (Token.isErrorOrEOF())
351 return Token.isError();
352 if (Token.isNot(MIToken::MachineBasicBlockLabel))
353 return error("expected a basic block definition before instructions");
354 unsigned BraceDepth = 0;
356 if (parseBasicBlockDefinition(MBBSlots))
358 bool IsAfterNewline = false;
359 // Skip until the next machine basic block.
361 if ((Token.is(MIToken::MachineBasicBlockLabel) && IsAfterNewline) ||
362 Token.isErrorOrEOF())
364 else if (Token.is(MIToken::MachineBasicBlockLabel))
365 return error("basic block definition should be located at the start of "
367 else if (consumeIfPresent(MIToken::Newline)) {
368 IsAfterNewline = true;
371 IsAfterNewline = false;
372 if (Token.is(MIToken::lbrace))
374 if (Token.is(MIToken::rbrace)) {
376 return error("extraneous closing brace ('}')");
381 // Verify that we closed all of the '{' at the end of a file or a block.
382 if (!Token.isError() && BraceDepth)
383 return error("expected '}'"); // FIXME: Report a note that shows '{'.
384 } while (!Token.isErrorOrEOF());
385 return Token.isError();
388 bool MIParser::parseBasicBlockLiveins(MachineBasicBlock &MBB) {
389 assert(Token.is(MIToken::kw_liveins));
391 if (expectAndConsume(MIToken::colon))
393 if (Token.isNewlineOrEOF()) // Allow an empty list of liveins.
396 if (Token.isNot(MIToken::NamedRegister))
397 return error("expected a named register");
399 if (parseRegister(Reg))
403 } while (consumeIfPresent(MIToken::comma));
407 bool MIParser::parseBasicBlockSuccessors(MachineBasicBlock &MBB) {
408 assert(Token.is(MIToken::kw_successors));
410 if (expectAndConsume(MIToken::colon))
412 if (Token.isNewlineOrEOF()) // Allow an empty list of successors.
415 if (Token.isNot(MIToken::MachineBasicBlock))
416 return error("expected a machine basic block reference");
417 MachineBasicBlock *SuccMBB = nullptr;
418 if (parseMBBReference(SuccMBB))
422 if (consumeIfPresent(MIToken::lparen)) {
423 if (Token.isNot(MIToken::IntegerLiteral))
424 return error("expected an integer literal after '('");
425 if (getUnsigned(Weight))
428 if (expectAndConsume(MIToken::rparen))
431 MBB.addSuccessor(SuccMBB, Weight);
432 } while (consumeIfPresent(MIToken::comma));
436 bool MIParser::parseBasicBlock(MachineBasicBlock &MBB) {
437 // Skip the definition.
438 assert(Token.is(MIToken::MachineBasicBlockLabel));
440 if (consumeIfPresent(MIToken::lparen)) {
441 while (Token.isNot(MIToken::rparen) && !Token.isErrorOrEOF())
443 consumeIfPresent(MIToken::rparen);
445 consumeIfPresent(MIToken::colon);
447 // Parse the liveins and successors.
448 // N.B: Multiple lists of successors and liveins are allowed and they're
455 // liveins: %edi, %esi
457 if (Token.is(MIToken::kw_successors)) {
458 if (parseBasicBlockSuccessors(MBB))
460 } else if (Token.is(MIToken::kw_liveins)) {
461 if (parseBasicBlockLiveins(MBB))
463 } else if (consumeIfPresent(MIToken::Newline)) {
467 if (!Token.isNewlineOrEOF())
468 return error("expected line break at the end of a list");
472 // Parse the instructions.
473 bool IsInBundle = false;
474 MachineInstr *PrevMI = nullptr;
476 if (Token.is(MIToken::MachineBasicBlockLabel) || Token.is(MIToken::Eof))
478 else if (consumeIfPresent(MIToken::Newline))
480 if (consumeIfPresent(MIToken::rbrace)) {
481 // The first parsing pass should verify that all closing '}' have an
487 MachineInstr *MI = nullptr;
490 MBB.insert(MBB.end(), MI);
492 PrevMI->setFlag(MachineInstr::BundledSucc);
493 MI->setFlag(MachineInstr::BundledPred);
496 if (Token.is(MIToken::lbrace)) {
498 return error("nested instruction bundles are not allowed");
500 // This instruction is the start of the bundle.
501 MI->setFlag(MachineInstr::BundledSucc);
503 if (!Token.is(MIToken::Newline))
504 // The next instruction can be on the same line.
507 assert(Token.isNewlineOrEOF() && "MI is not fully parsed");
513 bool MIParser::parseBasicBlocks() {
515 // Skip until the first machine basic block.
516 while (Token.is(MIToken::Newline))
518 if (Token.isErrorOrEOF())
519 return Token.isError();
520 // The first parsing pass should have verified that this token is a MBB label
521 // in the 'parseBasicBlockDefinitions' method.
522 assert(Token.is(MIToken::MachineBasicBlockLabel));
524 MachineBasicBlock *MBB = nullptr;
525 if (parseMBBReference(MBB))
527 if (parseBasicBlock(*MBB))
529 // The method 'parseBasicBlock' should parse the whole block until the next
530 // block or the end of file.
531 assert(Token.is(MIToken::MachineBasicBlockLabel) || Token.is(MIToken::Eof));
532 } while (Token.isNot(MIToken::Eof));
536 bool MIParser::parse(MachineInstr *&MI) {
537 // Parse any register operands before '='
538 MachineOperand MO = MachineOperand::CreateImm(0);
539 SmallVector<MachineOperandWithLocation, 8> Operands;
540 while (Token.isRegister() || Token.isRegisterFlag()) {
541 auto Loc = Token.location();
542 if (parseRegisterOperand(MO, /*IsDef=*/true))
544 Operands.push_back(MachineOperandWithLocation(MO, Loc, Token.location()));
545 if (Token.isNot(MIToken::comma))
549 if (!Operands.empty() && expectAndConsume(MIToken::equal))
552 unsigned OpCode, Flags = 0;
553 if (Token.isError() || parseInstruction(OpCode, Flags))
556 // Parse the remaining machine operands.
557 while (!Token.isNewlineOrEOF() && Token.isNot(MIToken::kw_debug_location) &&
558 Token.isNot(MIToken::coloncolon) && Token.isNot(MIToken::lbrace)) {
559 auto Loc = Token.location();
560 if (parseMachineOperandAndTargetFlags(MO))
562 Operands.push_back(MachineOperandWithLocation(MO, Loc, Token.location()));
563 if (Token.isNewlineOrEOF() || Token.is(MIToken::coloncolon) ||
564 Token.is(MIToken::lbrace))
566 if (Token.isNot(MIToken::comma))
567 return error("expected ',' before the next machine operand");
571 DebugLoc DebugLocation;
572 if (Token.is(MIToken::kw_debug_location)) {
574 if (Token.isNot(MIToken::exclaim))
575 return error("expected a metadata node after 'debug-location'");
576 MDNode *Node = nullptr;
577 if (parseMDNode(Node))
579 DebugLocation = DebugLoc(Node);
582 // Parse the machine memory operands.
583 SmallVector<MachineMemOperand *, 2> MemOperands;
584 if (Token.is(MIToken::coloncolon)) {
586 while (!Token.isNewlineOrEOF()) {
587 MachineMemOperand *MemOp = nullptr;
588 if (parseMachineMemoryOperand(MemOp))
590 MemOperands.push_back(MemOp);
591 if (Token.isNewlineOrEOF())
593 if (Token.isNot(MIToken::comma))
594 return error("expected ',' before the next machine memory operand");
599 const auto &MCID = MF.getSubtarget().getInstrInfo()->get(OpCode);
600 if (!MCID.isVariadic()) {
601 // FIXME: Move the implicit operand verification to the machine verifier.
602 if (verifyImplicitOperands(Operands, MCID))
606 // TODO: Check for extraneous machine operands.
607 MI = MF.CreateMachineInstr(MCID, DebugLocation, /*NoImplicit=*/true);
609 for (const auto &Operand : Operands)
610 MI->addOperand(MF, Operand.Operand);
611 if (MemOperands.empty())
613 MachineInstr::mmo_iterator MemRefs =
614 MF.allocateMemRefsArray(MemOperands.size());
615 std::copy(MemOperands.begin(), MemOperands.end(), MemRefs);
616 MI->setMemRefs(MemRefs, MemRefs + MemOperands.size());
620 bool MIParser::parseStandaloneMBB(MachineBasicBlock *&MBB) {
622 if (Token.isNot(MIToken::MachineBasicBlock))
623 return error("expected a machine basic block reference");
624 if (parseMBBReference(MBB))
627 if (Token.isNot(MIToken::Eof))
629 "expected end of string after the machine basic block reference");
633 bool MIParser::parseStandaloneNamedRegister(unsigned &Reg) {
635 if (Token.isNot(MIToken::NamedRegister))
636 return error("expected a named register");
637 if (parseRegister(Reg))
640 if (Token.isNot(MIToken::Eof))
641 return error("expected end of string after the register reference");
645 bool MIParser::parseStandaloneVirtualRegister(unsigned &Reg) {
647 if (Token.isNot(MIToken::VirtualRegister))
648 return error("expected a virtual register");
649 if (parseRegister(Reg))
652 if (Token.isNot(MIToken::Eof))
653 return error("expected end of string after the register reference");
657 static const char *printImplicitRegisterFlag(const MachineOperand &MO) {
658 assert(MO.isImplicit());
659 return MO.isDef() ? "implicit-def" : "implicit";
662 static std::string getRegisterName(const TargetRegisterInfo *TRI,
664 assert(TargetRegisterInfo::isPhysicalRegister(Reg) && "expected phys reg");
665 return StringRef(TRI->getName(Reg)).lower();
668 bool MIParser::verifyImplicitOperands(
669 ArrayRef<MachineOperandWithLocation> Operands, const MCInstrDesc &MCID) {
671 // We can't verify call instructions as they can contain arbitrary implicit
672 // register and register mask operands.
675 // Gather all the expected implicit operands.
676 SmallVector<MachineOperand, 4> ImplicitOperands;
677 if (MCID.ImplicitDefs)
678 for (const uint16_t *ImpDefs = MCID.getImplicitDefs(); *ImpDefs; ++ImpDefs)
679 ImplicitOperands.push_back(
680 MachineOperand::CreateReg(*ImpDefs, true, true));
681 if (MCID.ImplicitUses)
682 for (const uint16_t *ImpUses = MCID.getImplicitUses(); *ImpUses; ++ImpUses)
683 ImplicitOperands.push_back(
684 MachineOperand::CreateReg(*ImpUses, false, true));
686 const auto *TRI = MF.getSubtarget().getRegisterInfo();
687 assert(TRI && "Expected target register info");
688 size_t I = ImplicitOperands.size(), J = Operands.size();
693 const auto &ImplicitOperand = ImplicitOperands[I];
694 const auto &Operand = Operands[J].Operand;
695 if (ImplicitOperand.isIdenticalTo(Operand))
697 if (Operand.isReg() && Operand.isImplicit()) {
698 // Check if this implicit register is a subregister of an explicit
700 bool IsImplicitSubRegister = false;
701 for (size_t K = 0, E = Operands.size(); K < E; ++K) {
702 const auto &Op = Operands[K].Operand;
703 if (Op.isReg() && !Op.isImplicit() &&
704 TRI->isSubRegister(Op.getReg(), Operand.getReg())) {
705 IsImplicitSubRegister = true;
709 if (IsImplicitSubRegister)
711 return error(Operands[J].Begin,
712 Twine("expected an implicit register operand '") +
713 printImplicitRegisterFlag(ImplicitOperand) + " %" +
714 getRegisterName(TRI, ImplicitOperand.getReg()) + "'");
717 // TODO: Fix source location when Operands[J].end is right before '=', i.e:
718 // insead of reporting an error at this location:
721 // report the error at the following location:
724 return error(J < Operands.size() ? Operands[J].End : Token.location(),
725 Twine("missing implicit register operand '") +
726 printImplicitRegisterFlag(ImplicitOperands[I]) + " %" +
727 getRegisterName(TRI, ImplicitOperands[I].getReg()) + "'");
732 bool MIParser::parseInstruction(unsigned &OpCode, unsigned &Flags) {
733 if (Token.is(MIToken::kw_frame_setup)) {
734 Flags |= MachineInstr::FrameSetup;
737 if (Token.isNot(MIToken::Identifier))
738 return error("expected a machine instruction");
739 StringRef InstrName = Token.stringValue();
740 if (parseInstrName(InstrName, OpCode))
741 return error(Twine("unknown machine instruction name '") + InstrName + "'");
746 bool MIParser::parseRegister(unsigned &Reg) {
747 switch (Token.kind()) {
748 case MIToken::underscore:
751 case MIToken::NamedRegister: {
752 StringRef Name = Token.stringValue();
753 if (getRegisterByName(Name, Reg))
754 return error(Twine("unknown register name '") + Name + "'");
757 case MIToken::VirtualRegister: {
761 const auto RegInfo = PFS.VirtualRegisterSlots.find(ID);
762 if (RegInfo == PFS.VirtualRegisterSlots.end())
763 return error(Twine("use of undefined virtual register '%") + Twine(ID) +
765 Reg = RegInfo->second;
768 // TODO: Parse other register kinds.
770 llvm_unreachable("The current token should be a register");
775 bool MIParser::parseRegisterFlag(unsigned &Flags) {
776 const unsigned OldFlags = Flags;
777 switch (Token.kind()) {
778 case MIToken::kw_implicit:
779 Flags |= RegState::Implicit;
781 case MIToken::kw_implicit_define:
782 Flags |= RegState::ImplicitDefine;
784 case MIToken::kw_dead:
785 Flags |= RegState::Dead;
787 case MIToken::kw_killed:
788 Flags |= RegState::Kill;
790 case MIToken::kw_undef:
791 Flags |= RegState::Undef;
793 case MIToken::kw_internal:
794 Flags |= RegState::InternalRead;
796 case MIToken::kw_early_clobber:
797 Flags |= RegState::EarlyClobber;
799 case MIToken::kw_debug_use:
800 Flags |= RegState::Debug;
803 llvm_unreachable("The current token should be a register flag");
805 if (OldFlags == Flags)
806 // We know that the same flag is specified more than once when the flags
808 return error("duplicate '" + Token.stringValue() + "' register flag");
813 bool MIParser::parseSubRegisterIndex(unsigned &SubReg) {
814 assert(Token.is(MIToken::colon));
816 if (Token.isNot(MIToken::Identifier))
817 return error("expected a subregister index after ':'");
818 auto Name = Token.stringValue();
819 SubReg = getSubRegIndex(Name);
821 return error(Twine("use of unknown subregister index '") + Name + "'");
826 bool MIParser::parseRegisterOperand(MachineOperand &Dest, bool IsDef) {
828 unsigned Flags = IsDef ? RegState::Define : 0;
829 while (Token.isRegisterFlag()) {
830 if (parseRegisterFlag(Flags))
833 if (!Token.isRegister())
834 return error("expected a register after register flags");
835 if (parseRegister(Reg))
839 if (Token.is(MIToken::colon)) {
840 if (parseSubRegisterIndex(SubReg))
843 Dest = MachineOperand::CreateReg(
844 Reg, Flags & RegState::Define, Flags & RegState::Implicit,
845 Flags & RegState::Kill, Flags & RegState::Dead, Flags & RegState::Undef,
846 Flags & RegState::EarlyClobber, SubReg, Flags & RegState::Debug,
847 Flags & RegState::InternalRead);
851 bool MIParser::parseImmediateOperand(MachineOperand &Dest) {
852 assert(Token.is(MIToken::IntegerLiteral));
853 const APSInt &Int = Token.integerValue();
854 if (Int.getMinSignedBits() > 64)
855 return error("integer literal is too large to be an immediate operand");
856 Dest = MachineOperand::CreateImm(Int.getExtValue());
861 bool MIParser::parseIRConstant(StringRef::iterator Loc, const Constant *&C) {
862 auto Source = StringRef(Loc, Token.range().end() - Loc).str();
865 C = parseConstantValue(Source.c_str(), Err, *MF.getFunction()->getParent());
867 return error(Loc + Err.getColumnNo(), Err.getMessage());
871 bool MIParser::parseTypedImmediateOperand(MachineOperand &Dest) {
872 assert(Token.is(MIToken::IntegerType));
873 auto Loc = Token.location();
875 if (Token.isNot(MIToken::IntegerLiteral))
876 return error("expected an integer literal");
877 const Constant *C = nullptr;
878 if (parseIRConstant(Loc, C))
880 Dest = MachineOperand::CreateCImm(cast<ConstantInt>(C));
884 bool MIParser::parseFPImmediateOperand(MachineOperand &Dest) {
885 auto Loc = Token.location();
887 if (Token.isNot(MIToken::FloatingPointLiteral))
888 return error("expected a floating point literal");
889 const Constant *C = nullptr;
890 if (parseIRConstant(Loc, C))
892 Dest = MachineOperand::CreateFPImm(cast<ConstantFP>(C));
896 bool MIParser::getUnsigned(unsigned &Result) {
897 assert(Token.hasIntegerValue() && "Expected a token with an integer value");
898 const uint64_t Limit = uint64_t(std::numeric_limits<unsigned>::max()) + 1;
899 uint64_t Val64 = Token.integerValue().getLimitedValue(Limit);
901 return error("expected 32-bit integer (too large)");
906 bool MIParser::parseMBBReference(MachineBasicBlock *&MBB) {
907 assert(Token.is(MIToken::MachineBasicBlock) ||
908 Token.is(MIToken::MachineBasicBlockLabel));
910 if (getUnsigned(Number))
912 auto MBBInfo = PFS.MBBSlots.find(Number);
913 if (MBBInfo == PFS.MBBSlots.end())
914 return error(Twine("use of undefined machine basic block #") +
916 MBB = MBBInfo->second;
917 if (!Token.stringValue().empty() && Token.stringValue() != MBB->getName())
918 return error(Twine("the name of machine basic block #") + Twine(Number) +
919 " isn't '" + Token.stringValue() + "'");
923 bool MIParser::parseMBBOperand(MachineOperand &Dest) {
924 MachineBasicBlock *MBB;
925 if (parseMBBReference(MBB))
927 Dest = MachineOperand::CreateMBB(MBB);
932 bool MIParser::parseStackObjectOperand(MachineOperand &Dest) {
933 assert(Token.is(MIToken::StackObject));
937 auto ObjectInfo = PFS.StackObjectSlots.find(ID);
938 if (ObjectInfo == PFS.StackObjectSlots.end())
939 return error(Twine("use of undefined stack object '%stack.") + Twine(ID) +
942 if (const auto *Alloca =
943 MF.getFrameInfo()->getObjectAllocation(ObjectInfo->second))
944 Name = Alloca->getName();
945 if (!Token.stringValue().empty() && Token.stringValue() != Name)
946 return error(Twine("the name of the stack object '%stack.") + Twine(ID) +
947 "' isn't '" + Token.stringValue() + "'");
949 Dest = MachineOperand::CreateFI(ObjectInfo->second);
953 bool MIParser::parseFixedStackFrameIndex(int &FI) {
954 assert(Token.is(MIToken::FixedStackObject));
958 auto ObjectInfo = PFS.FixedStackObjectSlots.find(ID);
959 if (ObjectInfo == PFS.FixedStackObjectSlots.end())
960 return error(Twine("use of undefined fixed stack object '%fixed-stack.") +
963 FI = ObjectInfo->second;
967 bool MIParser::parseFixedStackObjectOperand(MachineOperand &Dest) {
969 if (parseFixedStackFrameIndex(FI))
971 Dest = MachineOperand::CreateFI(FI);
975 bool MIParser::parseGlobalValue(GlobalValue *&GV) {
976 switch (Token.kind()) {
977 case MIToken::NamedGlobalValue: {
978 const Module *M = MF.getFunction()->getParent();
979 GV = M->getNamedValue(Token.stringValue());
981 return error(Twine("use of undefined global value '") + Token.range() +
985 case MIToken::GlobalValue: {
987 if (getUnsigned(GVIdx))
989 if (GVIdx >= IRSlots.GlobalValues.size())
990 return error(Twine("use of undefined global value '@") + Twine(GVIdx) +
992 GV = IRSlots.GlobalValues[GVIdx];
996 llvm_unreachable("The current token should be a global value");
1001 bool MIParser::parseGlobalAddressOperand(MachineOperand &Dest) {
1002 GlobalValue *GV = nullptr;
1003 if (parseGlobalValue(GV))
1006 Dest = MachineOperand::CreateGA(GV, /*Offset=*/0);
1007 if (parseOperandsOffset(Dest))
1012 bool MIParser::parseConstantPoolIndexOperand(MachineOperand &Dest) {
1013 assert(Token.is(MIToken::ConstantPoolItem));
1015 if (getUnsigned(ID))
1017 auto ConstantInfo = PFS.ConstantPoolSlots.find(ID);
1018 if (ConstantInfo == PFS.ConstantPoolSlots.end())
1019 return error("use of undefined constant '%const." + Twine(ID) + "'");
1021 Dest = MachineOperand::CreateCPI(ID, /*Offset=*/0);
1022 if (parseOperandsOffset(Dest))
1027 bool MIParser::parseJumpTableIndexOperand(MachineOperand &Dest) {
1028 assert(Token.is(MIToken::JumpTableIndex));
1030 if (getUnsigned(ID))
1032 auto JumpTableEntryInfo = PFS.JumpTableSlots.find(ID);
1033 if (JumpTableEntryInfo == PFS.JumpTableSlots.end())
1034 return error("use of undefined jump table '%jump-table." + Twine(ID) + "'");
1036 Dest = MachineOperand::CreateJTI(JumpTableEntryInfo->second);
1040 bool MIParser::parseExternalSymbolOperand(MachineOperand &Dest) {
1041 assert(Token.is(MIToken::ExternalSymbol));
1042 const char *Symbol = MF.createExternalSymbolName(Token.stringValue());
1044 Dest = MachineOperand::CreateES(Symbol);
1045 if (parseOperandsOffset(Dest))
1050 bool MIParser::parseMDNode(MDNode *&Node) {
1051 assert(Token.is(MIToken::exclaim));
1052 auto Loc = Token.location();
1054 if (Token.isNot(MIToken::IntegerLiteral) || Token.integerValue().isSigned())
1055 return error("expected metadata id after '!'");
1057 if (getUnsigned(ID))
1059 auto NodeInfo = IRSlots.MetadataNodes.find(ID);
1060 if (NodeInfo == IRSlots.MetadataNodes.end())
1061 return error(Loc, "use of undefined metadata '!" + Twine(ID) + "'");
1063 Node = NodeInfo->second.get();
1067 bool MIParser::parseMetadataOperand(MachineOperand &Dest) {
1068 MDNode *Node = nullptr;
1069 if (parseMDNode(Node))
1071 Dest = MachineOperand::CreateMetadata(Node);
1075 bool MIParser::parseCFIOffset(int &Offset) {
1076 if (Token.isNot(MIToken::IntegerLiteral))
1077 return error("expected a cfi offset");
1078 if (Token.integerValue().getMinSignedBits() > 32)
1079 return error("expected a 32 bit integer (the cfi offset is too large)");
1080 Offset = (int)Token.integerValue().getExtValue();
1085 bool MIParser::parseCFIRegister(unsigned &Reg) {
1086 if (Token.isNot(MIToken::NamedRegister))
1087 return error("expected a cfi register");
1089 if (parseRegister(LLVMReg))
1091 const auto *TRI = MF.getSubtarget().getRegisterInfo();
1092 assert(TRI && "Expected target register info");
1093 int DwarfReg = TRI->getDwarfRegNum(LLVMReg, true);
1095 return error("invalid DWARF register");
1096 Reg = (unsigned)DwarfReg;
1101 bool MIParser::parseCFIOperand(MachineOperand &Dest) {
1102 auto Kind = Token.kind();
1104 auto &MMI = MF.getMMI();
1109 case MIToken::kw_cfi_same_value:
1110 if (parseCFIRegister(Reg))
1113 MMI.addFrameInst(MCCFIInstruction::createSameValue(nullptr, Reg));
1115 case MIToken::kw_cfi_offset:
1116 if (parseCFIRegister(Reg) || expectAndConsume(MIToken::comma) ||
1117 parseCFIOffset(Offset))
1120 MMI.addFrameInst(MCCFIInstruction::createOffset(nullptr, Reg, Offset));
1122 case MIToken::kw_cfi_def_cfa_register:
1123 if (parseCFIRegister(Reg))
1126 MMI.addFrameInst(MCCFIInstruction::createDefCfaRegister(nullptr, Reg));
1128 case MIToken::kw_cfi_def_cfa_offset:
1129 if (parseCFIOffset(Offset))
1131 // NB: MCCFIInstruction::createDefCfaOffset negates the offset.
1132 CFIIndex = MMI.addFrameInst(
1133 MCCFIInstruction::createDefCfaOffset(nullptr, -Offset));
1135 case MIToken::kw_cfi_def_cfa:
1136 if (parseCFIRegister(Reg) || expectAndConsume(MIToken::comma) ||
1137 parseCFIOffset(Offset))
1139 // NB: MCCFIInstruction::createDefCfa negates the offset.
1141 MMI.addFrameInst(MCCFIInstruction::createDefCfa(nullptr, Reg, -Offset));
1144 // TODO: Parse the other CFI operands.
1145 llvm_unreachable("The current token should be a cfi operand");
1147 Dest = MachineOperand::CreateCFIIndex(CFIIndex);
1151 bool MIParser::parseIRBlock(BasicBlock *&BB, const Function &F) {
1152 switch (Token.kind()) {
1153 case MIToken::NamedIRBlock: {
1154 BB = dyn_cast_or_null<BasicBlock>(
1155 F.getValueSymbolTable().lookup(Token.stringValue()));
1157 return error(Twine("use of undefined IR block '") + Token.range() + "'");
1160 case MIToken::IRBlock: {
1161 unsigned SlotNumber = 0;
1162 if (getUnsigned(SlotNumber))
1164 BB = const_cast<BasicBlock *>(getIRBlock(SlotNumber, F));
1166 return error(Twine("use of undefined IR block '%ir-block.") +
1167 Twine(SlotNumber) + "'");
1171 llvm_unreachable("The current token should be an IR block reference");
1176 bool MIParser::parseBlockAddressOperand(MachineOperand &Dest) {
1177 assert(Token.is(MIToken::kw_blockaddress));
1179 if (expectAndConsume(MIToken::lparen))
1181 if (Token.isNot(MIToken::GlobalValue) &&
1182 Token.isNot(MIToken::NamedGlobalValue))
1183 return error("expected a global value");
1184 GlobalValue *GV = nullptr;
1185 if (parseGlobalValue(GV))
1187 auto *F = dyn_cast<Function>(GV);
1189 return error("expected an IR function reference");
1191 if (expectAndConsume(MIToken::comma))
1193 BasicBlock *BB = nullptr;
1194 if (Token.isNot(MIToken::IRBlock) && Token.isNot(MIToken::NamedIRBlock))
1195 return error("expected an IR block reference");
1196 if (parseIRBlock(BB, *F))
1199 if (expectAndConsume(MIToken::rparen))
1201 Dest = MachineOperand::CreateBA(BlockAddress::get(F, BB), /*Offset=*/0);
1202 if (parseOperandsOffset(Dest))
1207 bool MIParser::parseTargetIndexOperand(MachineOperand &Dest) {
1208 assert(Token.is(MIToken::kw_target_index));
1210 if (expectAndConsume(MIToken::lparen))
1212 if (Token.isNot(MIToken::Identifier))
1213 return error("expected the name of the target index");
1215 if (getTargetIndex(Token.stringValue(), Index))
1216 return error("use of undefined target index '" + Token.stringValue() + "'");
1218 if (expectAndConsume(MIToken::rparen))
1220 Dest = MachineOperand::CreateTargetIndex(unsigned(Index), /*Offset=*/0);
1221 if (parseOperandsOffset(Dest))
1226 bool MIParser::parseLiveoutRegisterMaskOperand(MachineOperand &Dest) {
1227 assert(Token.is(MIToken::kw_liveout));
1228 const auto *TRI = MF.getSubtarget().getRegisterInfo();
1229 assert(TRI && "Expected target register info");
1230 uint32_t *Mask = MF.allocateRegisterMask(TRI->getNumRegs());
1232 if (expectAndConsume(MIToken::lparen))
1235 if (Token.isNot(MIToken::NamedRegister))
1236 return error("expected a named register");
1238 if (parseRegister(Reg))
1241 Mask[Reg / 32] |= 1U << (Reg % 32);
1242 // TODO: Report an error if the same register is used more than once.
1243 if (Token.isNot(MIToken::comma))
1247 if (expectAndConsume(MIToken::rparen))
1249 Dest = MachineOperand::CreateRegLiveOut(Mask);
1253 bool MIParser::parseMachineOperand(MachineOperand &Dest) {
1254 switch (Token.kind()) {
1255 case MIToken::kw_implicit:
1256 case MIToken::kw_implicit_define:
1257 case MIToken::kw_dead:
1258 case MIToken::kw_killed:
1259 case MIToken::kw_undef:
1260 case MIToken::kw_internal:
1261 case MIToken::kw_early_clobber:
1262 case MIToken::kw_debug_use:
1263 case MIToken::underscore:
1264 case MIToken::NamedRegister:
1265 case MIToken::VirtualRegister:
1266 return parseRegisterOperand(Dest);
1267 case MIToken::IntegerLiteral:
1268 return parseImmediateOperand(Dest);
1269 case MIToken::IntegerType:
1270 return parseTypedImmediateOperand(Dest);
1271 case MIToken::kw_half:
1272 case MIToken::kw_float:
1273 case MIToken::kw_double:
1274 case MIToken::kw_x86_fp80:
1275 case MIToken::kw_fp128:
1276 case MIToken::kw_ppc_fp128:
1277 return parseFPImmediateOperand(Dest);
1278 case MIToken::MachineBasicBlock:
1279 return parseMBBOperand(Dest);
1280 case MIToken::StackObject:
1281 return parseStackObjectOperand(Dest);
1282 case MIToken::FixedStackObject:
1283 return parseFixedStackObjectOperand(Dest);
1284 case MIToken::GlobalValue:
1285 case MIToken::NamedGlobalValue:
1286 return parseGlobalAddressOperand(Dest);
1287 case MIToken::ConstantPoolItem:
1288 return parseConstantPoolIndexOperand(Dest);
1289 case MIToken::JumpTableIndex:
1290 return parseJumpTableIndexOperand(Dest);
1291 case MIToken::ExternalSymbol:
1292 return parseExternalSymbolOperand(Dest);
1293 case MIToken::exclaim:
1294 return parseMetadataOperand(Dest);
1295 case MIToken::kw_cfi_same_value:
1296 case MIToken::kw_cfi_offset:
1297 case MIToken::kw_cfi_def_cfa_register:
1298 case MIToken::kw_cfi_def_cfa_offset:
1299 case MIToken::kw_cfi_def_cfa:
1300 return parseCFIOperand(Dest);
1301 case MIToken::kw_blockaddress:
1302 return parseBlockAddressOperand(Dest);
1303 case MIToken::kw_target_index:
1304 return parseTargetIndexOperand(Dest);
1305 case MIToken::kw_liveout:
1306 return parseLiveoutRegisterMaskOperand(Dest);
1307 case MIToken::Error:
1309 case MIToken::Identifier:
1310 if (const auto *RegMask = getRegMask(Token.stringValue())) {
1311 Dest = MachineOperand::CreateRegMask(RegMask);
1317 // TODO: parse the other machine operands.
1318 return error("expected a machine operand");
1323 bool MIParser::parseMachineOperandAndTargetFlags(MachineOperand &Dest) {
1325 bool HasTargetFlags = false;
1326 if (Token.is(MIToken::kw_target_flags)) {
1327 HasTargetFlags = true;
1329 if (expectAndConsume(MIToken::lparen))
1331 if (Token.isNot(MIToken::Identifier))
1332 return error("expected the name of the target flag");
1333 if (getDirectTargetFlag(Token.stringValue(), TF))
1334 return error("use of undefined target flag '" + Token.stringValue() +
1337 // TODO: Parse target's bit target flags.
1338 if (expectAndConsume(MIToken::rparen))
1341 auto Loc = Token.location();
1342 if (parseMachineOperand(Dest))
1344 if (!HasTargetFlags)
1347 return error(Loc, "register operands can't have target flags");
1348 Dest.setTargetFlags(TF);
1352 bool MIParser::parseOffset(int64_t &Offset) {
1353 if (Token.isNot(MIToken::plus) && Token.isNot(MIToken::minus))
1355 StringRef Sign = Token.range();
1356 bool IsNegative = Token.is(MIToken::minus);
1358 if (Token.isNot(MIToken::IntegerLiteral))
1359 return error("expected an integer literal after '" + Sign + "'");
1360 if (Token.integerValue().getMinSignedBits() > 64)
1361 return error("expected 64-bit integer (too large)");
1362 Offset = Token.integerValue().getExtValue();
1369 bool MIParser::parseAlignment(unsigned &Alignment) {
1370 assert(Token.is(MIToken::kw_align));
1372 if (Token.isNot(MIToken::IntegerLiteral) || Token.integerValue().isSigned())
1373 return error("expected an integer literal after 'align'");
1374 if (getUnsigned(Alignment))
1380 bool MIParser::parseOperandsOffset(MachineOperand &Op) {
1382 if (parseOffset(Offset))
1384 Op.setOffset(Offset);
1388 bool MIParser::parseIRValue(Value *&V) {
1389 switch (Token.kind()) {
1390 case MIToken::NamedIRValue: {
1391 V = MF.getFunction()->getValueSymbolTable().lookup(Token.stringValue());
1393 V = MF.getFunction()->getParent()->getValueSymbolTable().lookup(
1394 Token.stringValue());
1396 return error(Twine("use of undefined IR value '") + Token.range() + "'");
1399 // TODO: Parse unnamed IR value references.
1401 llvm_unreachable("The current token should be an IR block reference");
1406 bool MIParser::getUint64(uint64_t &Result) {
1407 assert(Token.hasIntegerValue());
1408 if (Token.integerValue().getActiveBits() > 64)
1409 return error("expected 64-bit integer (too large)");
1410 Result = Token.integerValue().getZExtValue();
1414 bool MIParser::parseMemoryOperandFlag(unsigned &Flags) {
1415 const unsigned OldFlags = Flags;
1416 switch (Token.kind()) {
1417 case MIToken::kw_volatile:
1418 Flags |= MachineMemOperand::MOVolatile;
1420 case MIToken::kw_non_temporal:
1421 Flags |= MachineMemOperand::MONonTemporal;
1423 case MIToken::kw_invariant:
1424 Flags |= MachineMemOperand::MOInvariant;
1426 // TODO: parse the target specific memory operand flags.
1428 llvm_unreachable("The current token should be a memory operand flag");
1430 if (OldFlags == Flags)
1431 // We know that the same flag is specified more than once when the flags
1432 // weren't modified.
1433 return error("duplicate '" + Token.stringValue() + "' memory operand flag");
1438 bool MIParser::parseMemoryPseudoSourceValue(const PseudoSourceValue *&PSV) {
1439 switch (Token.kind()) {
1440 case MIToken::kw_stack:
1441 PSV = MF.getPSVManager().getStack();
1443 case MIToken::kw_got:
1444 PSV = MF.getPSVManager().getGOT();
1446 case MIToken::kw_jump_table:
1447 PSV = MF.getPSVManager().getJumpTable();
1449 case MIToken::kw_constant_pool:
1450 PSV = MF.getPSVManager().getConstantPool();
1452 case MIToken::FixedStackObject: {
1454 if (parseFixedStackFrameIndex(FI))
1456 PSV = MF.getPSVManager().getFixedStack(FI);
1457 // The token was already consumed, so use return here instead of break.
1460 case MIToken::GlobalValue:
1461 case MIToken::NamedGlobalValue: {
1462 GlobalValue *GV = nullptr;
1463 if (parseGlobalValue(GV))
1465 PSV = MF.getPSVManager().getGlobalValueCallEntry(GV);
1468 case MIToken::ExternalSymbol:
1469 PSV = MF.getPSVManager().getExternalSymbolCallEntry(
1470 MF.createExternalSymbolName(Token.stringValue()));
1473 llvm_unreachable("The current token should be pseudo source value");
1479 bool MIParser::parseMachinePointerInfo(MachinePointerInfo &Dest) {
1480 if (Token.is(MIToken::kw_constant_pool) || Token.is(MIToken::kw_stack) ||
1481 Token.is(MIToken::kw_got) || Token.is(MIToken::kw_jump_table) ||
1482 Token.is(MIToken::FixedStackObject) || Token.is(MIToken::GlobalValue) ||
1483 Token.is(MIToken::NamedGlobalValue) ||
1484 Token.is(MIToken::ExternalSymbol)) {
1485 const PseudoSourceValue *PSV = nullptr;
1486 if (parseMemoryPseudoSourceValue(PSV))
1489 if (parseOffset(Offset))
1491 Dest = MachinePointerInfo(PSV, Offset);
1494 if (Token.isNot(MIToken::NamedIRValue))
1495 return error("expected an IR value reference");
1497 if (parseIRValue(V))
1499 if (!V->getType()->isPointerTy())
1500 return error("expected a pointer IR value");
1503 if (parseOffset(Offset))
1505 Dest = MachinePointerInfo(V, Offset);
1509 bool MIParser::parseMachineMemoryOperand(MachineMemOperand *&Dest) {
1510 if (expectAndConsume(MIToken::lparen))
1513 while (Token.isMemoryOperandFlag()) {
1514 if (parseMemoryOperandFlag(Flags))
1517 if (Token.isNot(MIToken::Identifier) ||
1518 (Token.stringValue() != "load" && Token.stringValue() != "store"))
1519 return error("expected 'load' or 'store' memory operation");
1520 if (Token.stringValue() == "load")
1521 Flags |= MachineMemOperand::MOLoad;
1523 Flags |= MachineMemOperand::MOStore;
1526 if (Token.isNot(MIToken::IntegerLiteral))
1527 return error("expected the size integer literal after memory operation");
1529 if (getUint64(Size))
1533 const char *Word = Flags & MachineMemOperand::MOLoad ? "from" : "into";
1534 if (Token.isNot(MIToken::Identifier) || Token.stringValue() != Word)
1535 return error(Twine("expected '") + Word + "'");
1538 MachinePointerInfo Ptr = MachinePointerInfo();
1539 if (parseMachinePointerInfo(Ptr))
1541 unsigned BaseAlignment = Size;
1543 MDNode *Range = nullptr;
1544 while (consumeIfPresent(MIToken::comma)) {
1545 switch (Token.kind()) {
1546 case MIToken::kw_align:
1547 if (parseAlignment(BaseAlignment))
1550 case MIToken::md_tbaa:
1552 if (parseMDNode(AAInfo.TBAA))
1555 case MIToken::md_alias_scope:
1557 if (parseMDNode(AAInfo.Scope))
1560 case MIToken::md_noalias:
1562 if (parseMDNode(AAInfo.NoAlias))
1565 case MIToken::md_range:
1567 if (parseMDNode(Range))
1570 // TODO: Report an error on duplicate metadata nodes.
1572 return error("expected 'align' or '!tbaa' or '!alias.scope' or "
1573 "'!noalias' or '!range'");
1576 if (expectAndConsume(MIToken::rparen))
1579 MF.getMachineMemOperand(Ptr, Flags, Size, BaseAlignment, AAInfo, Range);
1583 void MIParser::initNames2InstrOpCodes() {
1584 if (!Names2InstrOpCodes.empty())
1586 const auto *TII = MF.getSubtarget().getInstrInfo();
1587 assert(TII && "Expected target instruction info");
1588 for (unsigned I = 0, E = TII->getNumOpcodes(); I < E; ++I)
1589 Names2InstrOpCodes.insert(std::make_pair(StringRef(TII->getName(I)), I));
1592 bool MIParser::parseInstrName(StringRef InstrName, unsigned &OpCode) {
1593 initNames2InstrOpCodes();
1594 auto InstrInfo = Names2InstrOpCodes.find(InstrName);
1595 if (InstrInfo == Names2InstrOpCodes.end())
1597 OpCode = InstrInfo->getValue();
1601 void MIParser::initNames2Regs() {
1602 if (!Names2Regs.empty())
1604 // The '%noreg' register is the register 0.
1605 Names2Regs.insert(std::make_pair("noreg", 0));
1606 const auto *TRI = MF.getSubtarget().getRegisterInfo();
1607 assert(TRI && "Expected target register info");
1608 for (unsigned I = 0, E = TRI->getNumRegs(); I < E; ++I) {
1610 Names2Regs.insert(std::make_pair(StringRef(TRI->getName(I)).lower(), I))
1613 assert(WasInserted && "Expected registers to be unique case-insensitively");
1617 bool MIParser::getRegisterByName(StringRef RegName, unsigned &Reg) {
1619 auto RegInfo = Names2Regs.find(RegName);
1620 if (RegInfo == Names2Regs.end())
1622 Reg = RegInfo->getValue();
1626 void MIParser::initNames2RegMasks() {
1627 if (!Names2RegMasks.empty())
1629 const auto *TRI = MF.getSubtarget().getRegisterInfo();
1630 assert(TRI && "Expected target register info");
1631 ArrayRef<const uint32_t *> RegMasks = TRI->getRegMasks();
1632 ArrayRef<const char *> RegMaskNames = TRI->getRegMaskNames();
1633 assert(RegMasks.size() == RegMaskNames.size());
1634 for (size_t I = 0, E = RegMasks.size(); I < E; ++I)
1635 Names2RegMasks.insert(
1636 std::make_pair(StringRef(RegMaskNames[I]).lower(), RegMasks[I]));
1639 const uint32_t *MIParser::getRegMask(StringRef Identifier) {
1640 initNames2RegMasks();
1641 auto RegMaskInfo = Names2RegMasks.find(Identifier);
1642 if (RegMaskInfo == Names2RegMasks.end())
1644 return RegMaskInfo->getValue();
1647 void MIParser::initNames2SubRegIndices() {
1648 if (!Names2SubRegIndices.empty())
1650 const TargetRegisterInfo *TRI = MF.getSubtarget().getRegisterInfo();
1651 for (unsigned I = 1, E = TRI->getNumSubRegIndices(); I < E; ++I)
1652 Names2SubRegIndices.insert(
1653 std::make_pair(StringRef(TRI->getSubRegIndexName(I)).lower(), I));
1656 unsigned MIParser::getSubRegIndex(StringRef Name) {
1657 initNames2SubRegIndices();
1658 auto SubRegInfo = Names2SubRegIndices.find(Name);
1659 if (SubRegInfo == Names2SubRegIndices.end())
1661 return SubRegInfo->getValue();
1664 static void initSlots2BasicBlocks(
1666 DenseMap<unsigned, const BasicBlock *> &Slots2BasicBlocks) {
1667 ModuleSlotTracker MST(F.getParent(), /*ShouldInitializeAllMetadata=*/false);
1668 MST.incorporateFunction(F);
1669 for (auto &BB : F) {
1672 int Slot = MST.getLocalSlot(&BB);
1675 Slots2BasicBlocks.insert(std::make_pair(unsigned(Slot), &BB));
1679 static const BasicBlock *getIRBlockFromSlot(
1681 const DenseMap<unsigned, const BasicBlock *> &Slots2BasicBlocks) {
1682 auto BlockInfo = Slots2BasicBlocks.find(Slot);
1683 if (BlockInfo == Slots2BasicBlocks.end())
1685 return BlockInfo->second;
1688 const BasicBlock *MIParser::getIRBlock(unsigned Slot) {
1689 if (Slots2BasicBlocks.empty())
1690 initSlots2BasicBlocks(*MF.getFunction(), Slots2BasicBlocks);
1691 return getIRBlockFromSlot(Slot, Slots2BasicBlocks);
1694 const BasicBlock *MIParser::getIRBlock(unsigned Slot, const Function &F) {
1695 if (&F == MF.getFunction())
1696 return getIRBlock(Slot);
1697 DenseMap<unsigned, const BasicBlock *> CustomSlots2BasicBlocks;
1698 initSlots2BasicBlocks(F, CustomSlots2BasicBlocks);
1699 return getIRBlockFromSlot(Slot, CustomSlots2BasicBlocks);
1702 void MIParser::initNames2TargetIndices() {
1703 if (!Names2TargetIndices.empty())
1705 const auto *TII = MF.getSubtarget().getInstrInfo();
1706 assert(TII && "Expected target instruction info");
1707 auto Indices = TII->getSerializableTargetIndices();
1708 for (const auto &I : Indices)
1709 Names2TargetIndices.insert(std::make_pair(StringRef(I.second), I.first));
1712 bool MIParser::getTargetIndex(StringRef Name, int &Index) {
1713 initNames2TargetIndices();
1714 auto IndexInfo = Names2TargetIndices.find(Name);
1715 if (IndexInfo == Names2TargetIndices.end())
1717 Index = IndexInfo->second;
1721 void MIParser::initNames2DirectTargetFlags() {
1722 if (!Names2DirectTargetFlags.empty())
1724 const auto *TII = MF.getSubtarget().getInstrInfo();
1725 assert(TII && "Expected target instruction info");
1726 auto Flags = TII->getSerializableDirectMachineOperandTargetFlags();
1727 for (const auto &I : Flags)
1728 Names2DirectTargetFlags.insert(
1729 std::make_pair(StringRef(I.second), I.first));
1732 bool MIParser::getDirectTargetFlag(StringRef Name, unsigned &Flag) {
1733 initNames2DirectTargetFlags();
1734 auto FlagInfo = Names2DirectTargetFlags.find(Name);
1735 if (FlagInfo == Names2DirectTargetFlags.end())
1737 Flag = FlagInfo->second;
1741 bool llvm::parseMachineBasicBlockDefinitions(MachineFunction &MF, StringRef Src,
1742 PerFunctionMIParsingState &PFS,
1743 const SlotMapping &IRSlots,
1744 SMDiagnostic &Error) {
1746 SM.AddNewSourceBuffer(
1747 MemoryBuffer::getMemBuffer(Src, "", /*RequiresNullTerminator=*/false),
1749 return MIParser(SM, MF, Error, Src, PFS, IRSlots)
1750 .parseBasicBlockDefinitions(PFS.MBBSlots);
1753 bool llvm::parseMachineInstructions(MachineFunction &MF, StringRef Src,
1754 const PerFunctionMIParsingState &PFS,
1755 const SlotMapping &IRSlots,
1756 SMDiagnostic &Error) {
1758 SM.AddNewSourceBuffer(
1759 MemoryBuffer::getMemBuffer(Src, "", /*RequiresNullTerminator=*/false),
1761 return MIParser(SM, MF, Error, Src, PFS, IRSlots).parseBasicBlocks();
1764 bool llvm::parseMBBReference(MachineBasicBlock *&MBB, SourceMgr &SM,
1765 MachineFunction &MF, StringRef Src,
1766 const PerFunctionMIParsingState &PFS,
1767 const SlotMapping &IRSlots, SMDiagnostic &Error) {
1768 return MIParser(SM, MF, Error, Src, PFS, IRSlots).parseStandaloneMBB(MBB);
1771 bool llvm::parseNamedRegisterReference(unsigned &Reg, SourceMgr &SM,
1772 MachineFunction &MF, StringRef Src,
1773 const PerFunctionMIParsingState &PFS,
1774 const SlotMapping &IRSlots,
1775 SMDiagnostic &Error) {
1776 return MIParser(SM, MF, Error, Src, PFS, IRSlots)
1777 .parseStandaloneNamedRegister(Reg);
1780 bool llvm::parseVirtualRegisterReference(unsigned &Reg, SourceMgr &SM,
1781 MachineFunction &MF, StringRef Src,
1782 const PerFunctionMIParsingState &PFS,
1783 const SlotMapping &IRSlots,
1784 SMDiagnostic &Error) {
1785 return MIParser(SM, MF, Error, Src, PFS, IRSlots)
1786 .parseStandaloneVirtualRegister(Reg);