1 //===-- LLParser.cpp - Parser Class ---------------------------------------===//
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 defines the parser class for .ll files.
12 //===----------------------------------------------------------------------===//
15 #include "llvm/ADT/DenseMap.h"
16 #include "llvm/ADT/None.h"
17 #include "llvm/ADT/Optional.h"
18 #include "llvm/ADT/SmallPtrSet.h"
19 #include "llvm/ADT/STLExtras.h"
20 #include "llvm/AsmParser/SlotMapping.h"
21 #include "llvm/IR/Argument.h"
22 #include "llvm/IR/AutoUpgrade.h"
23 #include "llvm/IR/BasicBlock.h"
24 #include "llvm/IR/CallingConv.h"
25 #include "llvm/IR/Comdat.h"
26 #include "llvm/IR/Constants.h"
27 #include "llvm/IR/DebugInfoMetadata.h"
28 #include "llvm/IR/DerivedTypes.h"
29 #include "llvm/IR/Function.h"
30 #include "llvm/IR/GlobalIFunc.h"
31 #include "llvm/IR/GlobalObject.h"
32 #include "llvm/IR/InlineAsm.h"
33 #include "llvm/IR/Instruction.h"
34 #include "llvm/IR/Instructions.h"
35 #include "llvm/IR/Intrinsics.h"
36 #include "llvm/IR/LLVMContext.h"
37 #include "llvm/IR/Metadata.h"
38 #include "llvm/IR/Module.h"
39 #include "llvm/IR/Operator.h"
40 #include "llvm/IR/Type.h"
41 #include "llvm/IR/Value.h"
42 #include "llvm/IR/ValueSymbolTable.h"
43 #include "llvm/Support/Casting.h"
44 #include "llvm/Support/Dwarf.h"
45 #include "llvm/Support/ErrorHandling.h"
46 #include "llvm/Support/MathExtras.h"
47 #include "llvm/Support/SaveAndRestore.h"
48 #include "llvm/Support/raw_ostream.h"
57 static std::string getTypeString(Type *T) {
59 raw_string_ostream Tmp(Result);
64 /// Run: module ::= toplevelentity*
65 bool LLParser::Run() {
69 if (Context.shouldDiscardValueNames())
72 "Can't read textual IR with a Context that discards named Values");
74 return ParseTopLevelEntities() ||
75 ValidateEndOfModule();
78 bool LLParser::parseStandaloneConstantValue(Constant *&C,
79 const SlotMapping *Slots) {
80 restoreParsingState(Slots);
84 if (ParseType(Ty) || parseConstantValue(Ty, C))
86 if (Lex.getKind() != lltok::Eof)
87 return Error(Lex.getLoc(), "expected end of string");
91 bool LLParser::parseTypeAtBeginning(Type *&Ty, unsigned &Read,
92 const SlotMapping *Slots) {
93 restoreParsingState(Slots);
97 SMLoc Start = Lex.getLoc();
101 SMLoc End = Lex.getLoc();
102 Read = End.getPointer() - Start.getPointer();
107 void LLParser::restoreParsingState(const SlotMapping *Slots) {
110 NumberedVals = Slots->GlobalValues;
111 NumberedMetadata = Slots->MetadataNodes;
112 for (const auto &I : Slots->NamedTypes)
114 std::make_pair(I.getKey(), std::make_pair(I.second, LocTy())));
115 for (const auto &I : Slots->Types)
116 NumberedTypes.insert(
117 std::make_pair(I.first, std::make_pair(I.second, LocTy())));
120 /// ValidateEndOfModule - Do final validity and sanity checks at the end of the
122 bool LLParser::ValidateEndOfModule() {
123 // Handle any function attribute group forward references.
124 for (const auto &RAG : ForwardRefAttrGroups) {
125 Value *V = RAG.first;
126 const std::vector<unsigned> &Attrs = RAG.second;
129 for (const auto &Attr : Attrs)
130 B.merge(NumberedAttrBuilders[Attr]);
132 if (Function *Fn = dyn_cast<Function>(V)) {
133 AttributeList AS = Fn->getAttributes();
134 AttrBuilder FnAttrs(AS.getFnAttributes());
135 AS = AS.removeAttributes(Context, AttributeList::FunctionIndex);
139 // If the alignment was parsed as an attribute, move to the alignment
141 if (FnAttrs.hasAlignmentAttr()) {
142 Fn->setAlignment(FnAttrs.getAlignment());
143 FnAttrs.removeAttribute(Attribute::Alignment);
146 AS = AS.addAttributes(
147 Context, AttributeList::FunctionIndex,
148 AttributeList::get(Context, AttributeList::FunctionIndex, FnAttrs));
149 Fn->setAttributes(AS);
150 } else if (CallInst *CI = dyn_cast<CallInst>(V)) {
151 AttributeList AS = CI->getAttributes();
152 AttrBuilder FnAttrs(AS.getFnAttributes());
153 AS = AS.removeAttributes(Context, AttributeList::FunctionIndex);
155 AS = AS.addAttributes(
156 Context, AttributeList::FunctionIndex,
157 AttributeList::get(Context, AttributeList::FunctionIndex, FnAttrs));
158 CI->setAttributes(AS);
159 } else if (InvokeInst *II = dyn_cast<InvokeInst>(V)) {
160 AttributeList AS = II->getAttributes();
161 AttrBuilder FnAttrs(AS.getFnAttributes());
162 AS = AS.removeAttributes(Context, AttributeList::FunctionIndex);
164 AS = AS.addAttributes(
165 Context, AttributeList::FunctionIndex,
166 AttributeList::get(Context, AttributeList::FunctionIndex, FnAttrs));
167 II->setAttributes(AS);
169 llvm_unreachable("invalid object with forward attribute group reference");
173 // If there are entries in ForwardRefBlockAddresses at this point, the
174 // function was never defined.
175 if (!ForwardRefBlockAddresses.empty())
176 return Error(ForwardRefBlockAddresses.begin()->first.Loc,
177 "expected function name in blockaddress");
179 for (const auto &NT : NumberedTypes)
180 if (NT.second.second.isValid())
181 return Error(NT.second.second,
182 "use of undefined type '%" + Twine(NT.first) + "'");
184 for (StringMap<std::pair<Type*, LocTy> >::iterator I =
185 NamedTypes.begin(), E = NamedTypes.end(); I != E; ++I)
186 if (I->second.second.isValid())
187 return Error(I->second.second,
188 "use of undefined type named '" + I->getKey() + "'");
190 if (!ForwardRefComdats.empty())
191 return Error(ForwardRefComdats.begin()->second,
192 "use of undefined comdat '$" +
193 ForwardRefComdats.begin()->first + "'");
195 if (!ForwardRefVals.empty())
196 return Error(ForwardRefVals.begin()->second.second,
197 "use of undefined value '@" + ForwardRefVals.begin()->first +
200 if (!ForwardRefValIDs.empty())
201 return Error(ForwardRefValIDs.begin()->second.second,
202 "use of undefined value '@" +
203 Twine(ForwardRefValIDs.begin()->first) + "'");
205 if (!ForwardRefMDNodes.empty())
206 return Error(ForwardRefMDNodes.begin()->second.second,
207 "use of undefined metadata '!" +
208 Twine(ForwardRefMDNodes.begin()->first) + "'");
210 // Resolve metadata cycles.
211 for (auto &N : NumberedMetadata) {
212 if (N.second && !N.second->isResolved())
213 N.second->resolveCycles();
216 for (auto *Inst : InstsWithTBAATag) {
217 MDNode *MD = Inst->getMetadata(LLVMContext::MD_tbaa);
218 assert(MD && "UpgradeInstWithTBAATag should have a TBAA tag");
219 auto *UpgradedMD = UpgradeTBAANode(*MD);
220 if (MD != UpgradedMD)
221 Inst->setMetadata(LLVMContext::MD_tbaa, UpgradedMD);
224 // Look for intrinsic functions and CallInst that need to be upgraded
225 for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; )
226 UpgradeCallsToIntrinsic(&*FI++); // must be post-increment, as we remove
228 // Some types could be renamed during loading if several modules are
229 // loaded in the same LLVMContext (LTO scenario). In this case we should
230 // remangle intrinsics names as well.
231 for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; ) {
232 Function *F = &*FI++;
233 if (auto Remangled = Intrinsic::remangleIntrinsicFunction(F)) {
234 F->replaceAllUsesWith(Remangled.getValue());
235 F->eraseFromParent();
239 UpgradeDebugInfo(*M);
241 UpgradeModuleFlags(*M);
245 // Initialize the slot mapping.
246 // Because by this point we've parsed and validated everything, we can "steal"
247 // the mapping from LLParser as it doesn't need it anymore.
248 Slots->GlobalValues = std::move(NumberedVals);
249 Slots->MetadataNodes = std::move(NumberedMetadata);
250 for (const auto &I : NamedTypes)
251 Slots->NamedTypes.insert(std::make_pair(I.getKey(), I.second.first));
252 for (const auto &I : NumberedTypes)
253 Slots->Types.insert(std::make_pair(I.first, I.second.first));
258 //===----------------------------------------------------------------------===//
259 // Top-Level Entities
260 //===----------------------------------------------------------------------===//
262 bool LLParser::ParseTopLevelEntities() {
264 switch (Lex.getKind()) {
265 default: return TokError("expected top-level entity");
266 case lltok::Eof: return false;
267 case lltok::kw_declare: if (ParseDeclare()) return true; break;
268 case lltok::kw_define: if (ParseDefine()) return true; break;
269 case lltok::kw_module: if (ParseModuleAsm()) return true; break;
270 case lltok::kw_target: if (ParseTargetDefinition()) return true; break;
271 case lltok::kw_source_filename:
272 if (ParseSourceFileName())
275 case lltok::kw_deplibs: if (ParseDepLibs()) return true; break;
276 case lltok::LocalVarID: if (ParseUnnamedType()) return true; break;
277 case lltok::LocalVar: if (ParseNamedType()) return true; break;
278 case lltok::GlobalID: if (ParseUnnamedGlobal()) return true; break;
279 case lltok::GlobalVar: if (ParseNamedGlobal()) return true; break;
280 case lltok::ComdatVar: if (parseComdat()) return true; break;
281 case lltok::exclaim: if (ParseStandaloneMetadata()) return true; break;
282 case lltok::MetadataVar:if (ParseNamedMetadata()) return true; break;
283 case lltok::kw_attributes: if (ParseUnnamedAttrGrp()) return true; break;
284 case lltok::kw_uselistorder: if (ParseUseListOrder()) return true; break;
285 case lltok::kw_uselistorder_bb:
286 if (ParseUseListOrderBB())
294 /// ::= 'module' 'asm' STRINGCONSTANT
295 bool LLParser::ParseModuleAsm() {
296 assert(Lex.getKind() == lltok::kw_module);
300 if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
301 ParseStringConstant(AsmStr)) return true;
303 M->appendModuleInlineAsm(AsmStr);
308 /// ::= 'target' 'triple' '=' STRINGCONSTANT
309 /// ::= 'target' 'datalayout' '=' STRINGCONSTANT
310 bool LLParser::ParseTargetDefinition() {
311 assert(Lex.getKind() == lltok::kw_target);
314 default: return TokError("unknown target property");
315 case lltok::kw_triple:
317 if (ParseToken(lltok::equal, "expected '=' after target triple") ||
318 ParseStringConstant(Str))
320 M->setTargetTriple(Str);
322 case lltok::kw_datalayout:
324 if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
325 ParseStringConstant(Str))
327 M->setDataLayout(Str);
333 /// ::= 'source_filename' '=' STRINGCONSTANT
334 bool LLParser::ParseSourceFileName() {
335 assert(Lex.getKind() == lltok::kw_source_filename);
338 if (ParseToken(lltok::equal, "expected '=' after source_filename") ||
339 ParseStringConstant(Str))
341 M->setSourceFileName(Str);
346 /// ::= 'deplibs' '=' '[' ']'
347 /// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
348 /// FIXME: Remove in 4.0. Currently parse, but ignore.
349 bool LLParser::ParseDepLibs() {
350 assert(Lex.getKind() == lltok::kw_deplibs);
352 if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
353 ParseToken(lltok::lsquare, "expected '=' after deplibs"))
356 if (EatIfPresent(lltok::rsquare))
361 if (ParseStringConstant(Str)) return true;
362 } while (EatIfPresent(lltok::comma));
364 return ParseToken(lltok::rsquare, "expected ']' at end of list");
367 /// ParseUnnamedType:
368 /// ::= LocalVarID '=' 'type' type
369 bool LLParser::ParseUnnamedType() {
370 LocTy TypeLoc = Lex.getLoc();
371 unsigned TypeID = Lex.getUIntVal();
372 Lex.Lex(); // eat LocalVarID;
374 if (ParseToken(lltok::equal, "expected '=' after name") ||
375 ParseToken(lltok::kw_type, "expected 'type' after '='"))
378 Type *Result = nullptr;
379 if (ParseStructDefinition(TypeLoc, "",
380 NumberedTypes[TypeID], Result)) return true;
382 if (!isa<StructType>(Result)) {
383 std::pair<Type*, LocTy> &Entry = NumberedTypes[TypeID];
385 return Error(TypeLoc, "non-struct types may not be recursive");
386 Entry.first = Result;
387 Entry.second = SMLoc();
394 /// ::= LocalVar '=' 'type' type
395 bool LLParser::ParseNamedType() {
396 std::string Name = Lex.getStrVal();
397 LocTy NameLoc = Lex.getLoc();
398 Lex.Lex(); // eat LocalVar.
400 if (ParseToken(lltok::equal, "expected '=' after name") ||
401 ParseToken(lltok::kw_type, "expected 'type' after name"))
404 Type *Result = nullptr;
405 if (ParseStructDefinition(NameLoc, Name,
406 NamedTypes[Name], Result)) return true;
408 if (!isa<StructType>(Result)) {
409 std::pair<Type*, LocTy> &Entry = NamedTypes[Name];
411 return Error(NameLoc, "non-struct types may not be recursive");
412 Entry.first = Result;
413 Entry.second = SMLoc();
420 /// ::= 'declare' FunctionHeader
421 bool LLParser::ParseDeclare() {
422 assert(Lex.getKind() == lltok::kw_declare);
425 std::vector<std::pair<unsigned, MDNode *>> MDs;
426 while (Lex.getKind() == lltok::MetadataVar) {
429 if (ParseMetadataAttachment(MDK, N))
431 MDs.push_back({MDK, N});
435 if (ParseFunctionHeader(F, false))
438 F->addMetadata(MD.first, *MD.second);
443 /// ::= 'define' FunctionHeader (!dbg !56)* '{' ...
444 bool LLParser::ParseDefine() {
445 assert(Lex.getKind() == lltok::kw_define);
449 return ParseFunctionHeader(F, true) ||
450 ParseOptionalFunctionMetadata(*F) ||
451 ParseFunctionBody(*F);
457 bool LLParser::ParseGlobalType(bool &IsConstant) {
458 if (Lex.getKind() == lltok::kw_constant)
460 else if (Lex.getKind() == lltok::kw_global)
464 return TokError("expected 'global' or 'constant'");
470 bool LLParser::ParseOptionalUnnamedAddr(
471 GlobalVariable::UnnamedAddr &UnnamedAddr) {
472 if (EatIfPresent(lltok::kw_unnamed_addr))
473 UnnamedAddr = GlobalValue::UnnamedAddr::Global;
474 else if (EatIfPresent(lltok::kw_local_unnamed_addr))
475 UnnamedAddr = GlobalValue::UnnamedAddr::Local;
477 UnnamedAddr = GlobalValue::UnnamedAddr::None;
481 /// ParseUnnamedGlobal:
482 /// OptionalVisibility (ALIAS | IFUNC) ...
483 /// OptionalLinkage OptionalVisibility OptionalDLLStorageClass
484 /// ... -> global variable
485 /// GlobalID '=' OptionalVisibility (ALIAS | IFUNC) ...
486 /// GlobalID '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
487 /// ... -> global variable
488 bool LLParser::ParseUnnamedGlobal() {
489 unsigned VarID = NumberedVals.size();
491 LocTy NameLoc = Lex.getLoc();
493 // Handle the GlobalID form.
494 if (Lex.getKind() == lltok::GlobalID) {
495 if (Lex.getUIntVal() != VarID)
496 return Error(Lex.getLoc(), "variable expected to be numbered '%" +
498 Lex.Lex(); // eat GlobalID;
500 if (ParseToken(lltok::equal, "expected '=' after name"))
505 unsigned Linkage, Visibility, DLLStorageClass;
506 GlobalVariable::ThreadLocalMode TLM;
507 GlobalVariable::UnnamedAddr UnnamedAddr;
508 if (ParseOptionalLinkage(Linkage, HasLinkage, Visibility, DLLStorageClass) ||
509 ParseOptionalThreadLocal(TLM) || ParseOptionalUnnamedAddr(UnnamedAddr))
512 if (Lex.getKind() != lltok::kw_alias && Lex.getKind() != lltok::kw_ifunc)
513 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility,
514 DLLStorageClass, TLM, UnnamedAddr);
516 return parseIndirectSymbol(Name, NameLoc, Linkage, Visibility,
517 DLLStorageClass, TLM, UnnamedAddr);
520 /// ParseNamedGlobal:
521 /// GlobalVar '=' OptionalVisibility (ALIAS | IFUNC) ...
522 /// GlobalVar '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
523 /// ... -> global variable
524 bool LLParser::ParseNamedGlobal() {
525 assert(Lex.getKind() == lltok::GlobalVar);
526 LocTy NameLoc = Lex.getLoc();
527 std::string Name = Lex.getStrVal();
531 unsigned Linkage, Visibility, DLLStorageClass;
532 GlobalVariable::ThreadLocalMode TLM;
533 GlobalVariable::UnnamedAddr UnnamedAddr;
534 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
535 ParseOptionalLinkage(Linkage, HasLinkage, Visibility, DLLStorageClass) ||
536 ParseOptionalThreadLocal(TLM) || ParseOptionalUnnamedAddr(UnnamedAddr))
539 if (Lex.getKind() != lltok::kw_alias && Lex.getKind() != lltok::kw_ifunc)
540 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility,
541 DLLStorageClass, TLM, UnnamedAddr);
543 return parseIndirectSymbol(Name, NameLoc, Linkage, Visibility,
544 DLLStorageClass, TLM, UnnamedAddr);
547 bool LLParser::parseComdat() {
548 assert(Lex.getKind() == lltok::ComdatVar);
549 std::string Name = Lex.getStrVal();
550 LocTy NameLoc = Lex.getLoc();
553 if (ParseToken(lltok::equal, "expected '=' here"))
556 if (ParseToken(lltok::kw_comdat, "expected comdat keyword"))
557 return TokError("expected comdat type");
559 Comdat::SelectionKind SK;
560 switch (Lex.getKind()) {
562 return TokError("unknown selection kind");
566 case lltok::kw_exactmatch:
567 SK = Comdat::ExactMatch;
569 case lltok::kw_largest:
570 SK = Comdat::Largest;
572 case lltok::kw_noduplicates:
573 SK = Comdat::NoDuplicates;
575 case lltok::kw_samesize:
576 SK = Comdat::SameSize;
581 // See if the comdat was forward referenced, if so, use the comdat.
582 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
583 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
584 if (I != ComdatSymTab.end() && !ForwardRefComdats.erase(Name))
585 return Error(NameLoc, "redefinition of comdat '$" + Name + "'");
588 if (I != ComdatSymTab.end())
591 C = M->getOrInsertComdat(Name);
592 C->setSelectionKind(SK);
598 // ::= '!' STRINGCONSTANT
599 bool LLParser::ParseMDString(MDString *&Result) {
601 if (ParseStringConstant(Str)) return true;
602 Result = MDString::get(Context, Str);
607 // ::= '!' MDNodeNumber
608 bool LLParser::ParseMDNodeID(MDNode *&Result) {
609 // !{ ..., !42, ... }
610 LocTy IDLoc = Lex.getLoc();
612 if (ParseUInt32(MID))
615 // If not a forward reference, just return it now.
616 if (NumberedMetadata.count(MID)) {
617 Result = NumberedMetadata[MID];
621 // Otherwise, create MDNode forward reference.
622 auto &FwdRef = ForwardRefMDNodes[MID];
623 FwdRef = std::make_pair(MDTuple::getTemporary(Context, None), IDLoc);
625 Result = FwdRef.first.get();
626 NumberedMetadata[MID].reset(Result);
630 /// ParseNamedMetadata:
631 /// !foo = !{ !1, !2 }
632 bool LLParser::ParseNamedMetadata() {
633 assert(Lex.getKind() == lltok::MetadataVar);
634 std::string Name = Lex.getStrVal();
637 if (ParseToken(lltok::equal, "expected '=' here") ||
638 ParseToken(lltok::exclaim, "Expected '!' here") ||
639 ParseToken(lltok::lbrace, "Expected '{' here"))
642 NamedMDNode *NMD = M->getOrInsertNamedMetadata(Name);
643 if (Lex.getKind() != lltok::rbrace)
645 if (ParseToken(lltok::exclaim, "Expected '!' here"))
649 if (ParseMDNodeID(N)) return true;
651 } while (EatIfPresent(lltok::comma));
653 return ParseToken(lltok::rbrace, "expected end of metadata node");
656 /// ParseStandaloneMetadata:
658 bool LLParser::ParseStandaloneMetadata() {
659 assert(Lex.getKind() == lltok::exclaim);
661 unsigned MetadataID = 0;
664 if (ParseUInt32(MetadataID) ||
665 ParseToken(lltok::equal, "expected '=' here"))
668 // Detect common error, from old metadata syntax.
669 if (Lex.getKind() == lltok::Type)
670 return TokError("unexpected type in metadata definition");
672 bool IsDistinct = EatIfPresent(lltok::kw_distinct);
673 if (Lex.getKind() == lltok::MetadataVar) {
674 if (ParseSpecializedMDNode(Init, IsDistinct))
676 } else if (ParseToken(lltok::exclaim, "Expected '!' here") ||
677 ParseMDTuple(Init, IsDistinct))
680 // See if this was forward referenced, if so, handle it.
681 auto FI = ForwardRefMDNodes.find(MetadataID);
682 if (FI != ForwardRefMDNodes.end()) {
683 FI->second.first->replaceAllUsesWith(Init);
684 ForwardRefMDNodes.erase(FI);
686 assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work");
688 if (NumberedMetadata.count(MetadataID))
689 return TokError("Metadata id is already used");
690 NumberedMetadata[MetadataID].reset(Init);
696 static bool isValidVisibilityForLinkage(unsigned V, unsigned L) {
697 return !GlobalValue::isLocalLinkage((GlobalValue::LinkageTypes)L) ||
698 (GlobalValue::VisibilityTypes)V == GlobalValue::DefaultVisibility;
701 /// parseIndirectSymbol:
702 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility
703 /// OptionalDLLStorageClass OptionalThreadLocal
704 /// OptionalUnnamedAddr 'alias|ifunc' IndirectSymbol
709 /// Everything through OptionalUnnamedAddr has already been parsed.
711 bool LLParser::parseIndirectSymbol(
712 const std::string &Name, LocTy NameLoc, unsigned L, unsigned Visibility,
713 unsigned DLLStorageClass, GlobalVariable::ThreadLocalMode TLM,
714 GlobalVariable::UnnamedAddr UnnamedAddr) {
716 if (Lex.getKind() == lltok::kw_alias)
718 else if (Lex.getKind() == lltok::kw_ifunc)
721 llvm_unreachable("Not an alias or ifunc!");
724 GlobalValue::LinkageTypes Linkage = (GlobalValue::LinkageTypes) L;
726 if(IsAlias && !GlobalAlias::isValidLinkage(Linkage))
727 return Error(NameLoc, "invalid linkage type for alias");
729 if (!isValidVisibilityForLinkage(Visibility, L))
730 return Error(NameLoc,
731 "symbol with local linkage must have default visibility");
734 LocTy ExplicitTypeLoc = Lex.getLoc();
736 ParseToken(lltok::comma, "expected comma after alias or ifunc's type"))
740 LocTy AliaseeLoc = Lex.getLoc();
741 if (Lex.getKind() != lltok::kw_bitcast &&
742 Lex.getKind() != lltok::kw_getelementptr &&
743 Lex.getKind() != lltok::kw_addrspacecast &&
744 Lex.getKind() != lltok::kw_inttoptr) {
745 if (ParseGlobalTypeAndValue(Aliasee))
748 // The bitcast dest type is not present, it is implied by the dest type.
752 if (ID.Kind != ValID::t_Constant)
753 return Error(AliaseeLoc, "invalid aliasee");
754 Aliasee = ID.ConstantVal;
757 Type *AliaseeType = Aliasee->getType();
758 auto *PTy = dyn_cast<PointerType>(AliaseeType);
760 return Error(AliaseeLoc, "An alias or ifunc must have pointer type");
761 unsigned AddrSpace = PTy->getAddressSpace();
763 if (IsAlias && Ty != PTy->getElementType())
766 "explicit pointee type doesn't match operand's pointee type");
768 if (!IsAlias && !PTy->getElementType()->isFunctionTy())
771 "explicit pointee type should be a function type");
773 GlobalValue *GVal = nullptr;
775 // See if the alias was forward referenced, if so, prepare to replace the
776 // forward reference.
778 GVal = M->getNamedValue(Name);
780 if (!ForwardRefVals.erase(Name))
781 return Error(NameLoc, "redefinition of global '@" + Name + "'");
784 auto I = ForwardRefValIDs.find(NumberedVals.size());
785 if (I != ForwardRefValIDs.end()) {
786 GVal = I->second.first;
787 ForwardRefValIDs.erase(I);
791 // Okay, create the alias but do not insert it into the module yet.
792 std::unique_ptr<GlobalIndirectSymbol> GA;
794 GA.reset(GlobalAlias::create(Ty, AddrSpace,
795 (GlobalValue::LinkageTypes)Linkage, Name,
796 Aliasee, /*Parent*/ nullptr));
798 GA.reset(GlobalIFunc::create(Ty, AddrSpace,
799 (GlobalValue::LinkageTypes)Linkage, Name,
800 Aliasee, /*Parent*/ nullptr));
801 GA->setThreadLocalMode(TLM);
802 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
803 GA->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
804 GA->setUnnamedAddr(UnnamedAddr);
807 NumberedVals.push_back(GA.get());
810 // Verify that types agree.
811 if (GVal->getType() != GA->getType())
814 "forward reference and definition of alias have different types");
816 // If they agree, just RAUW the old value with the alias and remove the
818 GVal->replaceAllUsesWith(GA.get());
819 GVal->eraseFromParent();
822 // Insert into the module, we know its name won't collide now.
824 M->getAliasList().push_back(cast<GlobalAlias>(GA.get()));
826 M->getIFuncList().push_back(cast<GlobalIFunc>(GA.get()));
827 assert(GA->getName() == Name && "Should not be a name conflict!");
829 // The module owns this now
836 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
837 /// OptionalThreadLocal OptionalUnnamedAddr OptionalAddrSpace
838 /// OptionalExternallyInitialized GlobalType Type Const
839 /// ::= OptionalLinkage OptionalVisibility OptionalDLLStorageClass
840 /// OptionalThreadLocal OptionalUnnamedAddr OptionalAddrSpace
841 /// OptionalExternallyInitialized GlobalType Type Const
843 /// Everything up to and including OptionalUnnamedAddr has been parsed
846 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
847 unsigned Linkage, bool HasLinkage,
848 unsigned Visibility, unsigned DLLStorageClass,
849 GlobalVariable::ThreadLocalMode TLM,
850 GlobalVariable::UnnamedAddr UnnamedAddr) {
851 if (!isValidVisibilityForLinkage(Visibility, Linkage))
852 return Error(NameLoc,
853 "symbol with local linkage must have default visibility");
856 bool IsConstant, IsExternallyInitialized;
857 LocTy IsExternallyInitializedLoc;
861 if (ParseOptionalAddrSpace(AddrSpace) ||
862 ParseOptionalToken(lltok::kw_externally_initialized,
863 IsExternallyInitialized,
864 &IsExternallyInitializedLoc) ||
865 ParseGlobalType(IsConstant) ||
866 ParseType(Ty, TyLoc))
869 // If the linkage is specified and is external, then no initializer is
871 Constant *Init = nullptr;
873 !GlobalValue::isValidDeclarationLinkage(
874 (GlobalValue::LinkageTypes)Linkage)) {
875 if (ParseGlobalValue(Ty, Init))
879 if (Ty->isFunctionTy() || !PointerType::isValidElementType(Ty))
880 return Error(TyLoc, "invalid type for global variable");
882 GlobalValue *GVal = nullptr;
884 // See if the global was forward referenced, if so, use the global.
886 GVal = M->getNamedValue(Name);
888 if (!ForwardRefVals.erase(Name))
889 return Error(NameLoc, "redefinition of global '@" + Name + "'");
892 auto I = ForwardRefValIDs.find(NumberedVals.size());
893 if (I != ForwardRefValIDs.end()) {
894 GVal = I->second.first;
895 ForwardRefValIDs.erase(I);
901 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, nullptr,
902 Name, nullptr, GlobalVariable::NotThreadLocal,
905 if (GVal->getValueType() != Ty)
907 "forward reference and definition of global have different types");
909 GV = cast<GlobalVariable>(GVal);
911 // Move the forward-reference to the correct spot in the module.
912 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
916 NumberedVals.push_back(GV);
918 // Set the parsed properties on the global.
920 GV->setInitializer(Init);
921 GV->setConstant(IsConstant);
922 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
923 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
924 GV->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
925 GV->setExternallyInitialized(IsExternallyInitialized);
926 GV->setThreadLocalMode(TLM);
927 GV->setUnnamedAddr(UnnamedAddr);
929 // Parse attributes on the global.
930 while (Lex.getKind() == lltok::comma) {
933 if (Lex.getKind() == lltok::kw_section) {
935 GV->setSection(Lex.getStrVal());
936 if (ParseToken(lltok::StringConstant, "expected global section string"))
938 } else if (Lex.getKind() == lltok::kw_align) {
940 if (ParseOptionalAlignment(Alignment)) return true;
941 GV->setAlignment(Alignment);
942 } else if (Lex.getKind() == lltok::MetadataVar) {
943 if (ParseGlobalObjectMetadataAttachment(*GV))
947 if (parseOptionalComdat(Name, C))
952 return TokError("unknown global variable property!");
959 /// ParseUnnamedAttrGrp
960 /// ::= 'attributes' AttrGrpID '=' '{' AttrValPair+ '}'
961 bool LLParser::ParseUnnamedAttrGrp() {
962 assert(Lex.getKind() == lltok::kw_attributes);
963 LocTy AttrGrpLoc = Lex.getLoc();
966 if (Lex.getKind() != lltok::AttrGrpID)
967 return TokError("expected attribute group id");
969 unsigned VarID = Lex.getUIntVal();
970 std::vector<unsigned> unused;
974 if (ParseToken(lltok::equal, "expected '=' here") ||
975 ParseToken(lltok::lbrace, "expected '{' here") ||
976 ParseFnAttributeValuePairs(NumberedAttrBuilders[VarID], unused, true,
978 ParseToken(lltok::rbrace, "expected end of attribute group"))
981 if (!NumberedAttrBuilders[VarID].hasAttributes())
982 return Error(AttrGrpLoc, "attribute group has no attributes");
987 /// ParseFnAttributeValuePairs
988 /// ::= <attr> | <attr> '=' <value>
989 bool LLParser::ParseFnAttributeValuePairs(AttrBuilder &B,
990 std::vector<unsigned> &FwdRefAttrGrps,
991 bool inAttrGrp, LocTy &BuiltinLoc) {
992 bool HaveError = false;
997 lltok::Kind Token = Lex.getKind();
998 if (Token == lltok::kw_builtin)
999 BuiltinLoc = Lex.getLoc();
1002 if (!inAttrGrp) return HaveError;
1003 return Error(Lex.getLoc(), "unterminated attribute group");
1008 case lltok::AttrGrpID: {
1009 // Allow a function to reference an attribute group:
1011 // define void @foo() #1 { ... }
1015 "cannot have an attribute group reference in an attribute group");
1017 unsigned AttrGrpNum = Lex.getUIntVal();
1018 if (inAttrGrp) break;
1020 // Save the reference to the attribute group. We'll fill it in later.
1021 FwdRefAttrGrps.push_back(AttrGrpNum);
1024 // Target-dependent attributes:
1025 case lltok::StringConstant: {
1026 if (ParseStringAttribute(B))
1031 // Target-independent attributes:
1032 case lltok::kw_align: {
1033 // As a hack, we allow function alignment to be initially parsed as an
1034 // attribute on a function declaration/definition or added to an attribute
1035 // group and later moved to the alignment field.
1039 if (ParseToken(lltok::equal, "expected '=' here") ||
1040 ParseUInt32(Alignment))
1043 if (ParseOptionalAlignment(Alignment))
1046 B.addAlignmentAttr(Alignment);
1049 case lltok::kw_alignstack: {
1053 if (ParseToken(lltok::equal, "expected '=' here") ||
1054 ParseUInt32(Alignment))
1057 if (ParseOptionalStackAlignment(Alignment))
1060 B.addStackAlignmentAttr(Alignment);
1063 case lltok::kw_allocsize: {
1064 unsigned ElemSizeArg;
1065 Optional<unsigned> NumElemsArg;
1066 // inAttrGrp doesn't matter; we only support allocsize(a[, b])
1067 if (parseAllocSizeArguments(ElemSizeArg, NumElemsArg))
1069 B.addAllocSizeAttr(ElemSizeArg, NumElemsArg);
1072 case lltok::kw_alwaysinline: B.addAttribute(Attribute::AlwaysInline); break;
1073 case lltok::kw_argmemonly: B.addAttribute(Attribute::ArgMemOnly); break;
1074 case lltok::kw_builtin: B.addAttribute(Attribute::Builtin); break;
1075 case lltok::kw_cold: B.addAttribute(Attribute::Cold); break;
1076 case lltok::kw_convergent: B.addAttribute(Attribute::Convergent); break;
1077 case lltok::kw_inaccessiblememonly:
1078 B.addAttribute(Attribute::InaccessibleMemOnly); break;
1079 case lltok::kw_inaccessiblemem_or_argmemonly:
1080 B.addAttribute(Attribute::InaccessibleMemOrArgMemOnly); break;
1081 case lltok::kw_inlinehint: B.addAttribute(Attribute::InlineHint); break;
1082 case lltok::kw_jumptable: B.addAttribute(Attribute::JumpTable); break;
1083 case lltok::kw_minsize: B.addAttribute(Attribute::MinSize); break;
1084 case lltok::kw_naked: B.addAttribute(Attribute::Naked); break;
1085 case lltok::kw_nobuiltin: B.addAttribute(Attribute::NoBuiltin); break;
1086 case lltok::kw_noduplicate: B.addAttribute(Attribute::NoDuplicate); break;
1087 case lltok::kw_noimplicitfloat:
1088 B.addAttribute(Attribute::NoImplicitFloat); break;
1089 case lltok::kw_noinline: B.addAttribute(Attribute::NoInline); break;
1090 case lltok::kw_nonlazybind: B.addAttribute(Attribute::NonLazyBind); break;
1091 case lltok::kw_noredzone: B.addAttribute(Attribute::NoRedZone); break;
1092 case lltok::kw_noreturn: B.addAttribute(Attribute::NoReturn); break;
1093 case lltok::kw_norecurse: B.addAttribute(Attribute::NoRecurse); break;
1094 case lltok::kw_nounwind: B.addAttribute(Attribute::NoUnwind); break;
1095 case lltok::kw_optnone: B.addAttribute(Attribute::OptimizeNone); break;
1096 case lltok::kw_optsize: B.addAttribute(Attribute::OptimizeForSize); break;
1097 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1098 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1099 case lltok::kw_returns_twice:
1100 B.addAttribute(Attribute::ReturnsTwice); break;
1101 case lltok::kw_ssp: B.addAttribute(Attribute::StackProtect); break;
1102 case lltok::kw_sspreq: B.addAttribute(Attribute::StackProtectReq); break;
1103 case lltok::kw_sspstrong:
1104 B.addAttribute(Attribute::StackProtectStrong); break;
1105 case lltok::kw_safestack: B.addAttribute(Attribute::SafeStack); break;
1106 case lltok::kw_sanitize_address:
1107 B.addAttribute(Attribute::SanitizeAddress); break;
1108 case lltok::kw_sanitize_thread:
1109 B.addAttribute(Attribute::SanitizeThread); break;
1110 case lltok::kw_sanitize_memory:
1111 B.addAttribute(Attribute::SanitizeMemory); break;
1112 case lltok::kw_uwtable: B.addAttribute(Attribute::UWTable); break;
1113 case lltok::kw_writeonly: B.addAttribute(Attribute::WriteOnly); break;
1116 case lltok::kw_inreg:
1117 case lltok::kw_signext:
1118 case lltok::kw_zeroext:
1121 "invalid use of attribute on a function");
1123 case lltok::kw_byval:
1124 case lltok::kw_dereferenceable:
1125 case lltok::kw_dereferenceable_or_null:
1126 case lltok::kw_inalloca:
1127 case lltok::kw_nest:
1128 case lltok::kw_noalias:
1129 case lltok::kw_nocapture:
1130 case lltok::kw_nonnull:
1131 case lltok::kw_returned:
1132 case lltok::kw_sret:
1133 case lltok::kw_swifterror:
1134 case lltok::kw_swiftself:
1137 "invalid use of parameter-only attribute on a function");
1145 //===----------------------------------------------------------------------===//
1146 // GlobalValue Reference/Resolution Routines.
1147 //===----------------------------------------------------------------------===//
1149 static inline GlobalValue *createGlobalFwdRef(Module *M, PointerType *PTy,
1150 const std::string &Name) {
1151 if (auto *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1152 return Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
1154 return new GlobalVariable(*M, PTy->getElementType(), false,
1155 GlobalValue::ExternalWeakLinkage, nullptr, Name,
1156 nullptr, GlobalVariable::NotThreadLocal,
1157 PTy->getAddressSpace());
1160 /// GetGlobalVal - Get a value with the specified name or ID, creating a
1161 /// forward reference record if needed. This can return null if the value
1162 /// exists but does not have the right type.
1163 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
1165 PointerType *PTy = dyn_cast<PointerType>(Ty);
1167 Error(Loc, "global variable reference must have pointer type");
1171 // Look this name up in the normal function symbol table.
1173 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
1175 // If this is a forward reference for the value, see if we already created a
1176 // forward ref record.
1178 auto I = ForwardRefVals.find(Name);
1179 if (I != ForwardRefVals.end())
1180 Val = I->second.first;
1183 // If we have the value in the symbol table or fwd-ref table, return it.
1185 if (Val->getType() == Ty) return Val;
1186 Error(Loc, "'@" + Name + "' defined with type '" +
1187 getTypeString(Val->getType()) + "'");
1191 // Otherwise, create a new forward reference for this value and remember it.
1192 GlobalValue *FwdVal = createGlobalFwdRef(M, PTy, Name);
1193 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1197 GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
1198 PointerType *PTy = dyn_cast<PointerType>(Ty);
1200 Error(Loc, "global variable reference must have pointer type");
1204 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
1206 // If this is a forward reference for the value, see if we already created a
1207 // forward ref record.
1209 auto I = ForwardRefValIDs.find(ID);
1210 if (I != ForwardRefValIDs.end())
1211 Val = I->second.first;
1214 // If we have the value in the symbol table or fwd-ref table, return it.
1216 if (Val->getType() == Ty) return Val;
1217 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
1218 getTypeString(Val->getType()) + "'");
1222 // Otherwise, create a new forward reference for this value and remember it.
1223 GlobalValue *FwdVal = createGlobalFwdRef(M, PTy, "");
1224 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1228 //===----------------------------------------------------------------------===//
1229 // Comdat Reference/Resolution Routines.
1230 //===----------------------------------------------------------------------===//
1232 Comdat *LLParser::getComdat(const std::string &Name, LocTy Loc) {
1233 // Look this name up in the comdat symbol table.
1234 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
1235 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
1236 if (I != ComdatSymTab.end())
1239 // Otherwise, create a new forward reference for this value and remember it.
1240 Comdat *C = M->getOrInsertComdat(Name);
1241 ForwardRefComdats[Name] = Loc;
1245 //===----------------------------------------------------------------------===//
1247 //===----------------------------------------------------------------------===//
1249 /// ParseToken - If the current token has the specified kind, eat it and return
1250 /// success. Otherwise, emit the specified error and return failure.
1251 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
1252 if (Lex.getKind() != T)
1253 return TokError(ErrMsg);
1258 /// ParseStringConstant
1259 /// ::= StringConstant
1260 bool LLParser::ParseStringConstant(std::string &Result) {
1261 if (Lex.getKind() != lltok::StringConstant)
1262 return TokError("expected string constant");
1263 Result = Lex.getStrVal();
1270 bool LLParser::ParseUInt32(uint32_t &Val) {
1271 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1272 return TokError("expected integer");
1273 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
1274 if (Val64 != unsigned(Val64))
1275 return TokError("expected 32-bit integer (too large)");
1283 bool LLParser::ParseUInt64(uint64_t &Val) {
1284 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1285 return TokError("expected integer");
1286 Val = Lex.getAPSIntVal().getLimitedValue();
1292 /// := 'localdynamic'
1293 /// := 'initialexec'
1295 bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
1296 switch (Lex.getKind()) {
1298 return TokError("expected localdynamic, initialexec or localexec");
1299 case lltok::kw_localdynamic:
1300 TLM = GlobalVariable::LocalDynamicTLSModel;
1302 case lltok::kw_initialexec:
1303 TLM = GlobalVariable::InitialExecTLSModel;
1305 case lltok::kw_localexec:
1306 TLM = GlobalVariable::LocalExecTLSModel;
1314 /// ParseOptionalThreadLocal
1316 /// := 'thread_local'
1317 /// := 'thread_local' '(' tlsmodel ')'
1318 bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
1319 TLM = GlobalVariable::NotThreadLocal;
1320 if (!EatIfPresent(lltok::kw_thread_local))
1323 TLM = GlobalVariable::GeneralDynamicTLSModel;
1324 if (Lex.getKind() == lltok::lparen) {
1326 return ParseTLSModel(TLM) ||
1327 ParseToken(lltok::rparen, "expected ')' after thread local model");
1332 /// ParseOptionalAddrSpace
1334 /// := 'addrspace' '(' uint32 ')'
1335 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
1337 if (!EatIfPresent(lltok::kw_addrspace))
1339 return ParseToken(lltok::lparen, "expected '(' in address space") ||
1340 ParseUInt32(AddrSpace) ||
1341 ParseToken(lltok::rparen, "expected ')' in address space");
1344 /// ParseStringAttribute
1345 /// := StringConstant
1346 /// := StringConstant '=' StringConstant
1347 bool LLParser::ParseStringAttribute(AttrBuilder &B) {
1348 std::string Attr = Lex.getStrVal();
1351 if (EatIfPresent(lltok::equal) && ParseStringConstant(Val))
1353 B.addAttribute(Attr, Val);
1357 /// ParseOptionalParamAttrs - Parse a potentially empty list of parameter attributes.
1358 bool LLParser::ParseOptionalParamAttrs(AttrBuilder &B) {
1359 bool HaveError = false;
1364 lltok::Kind Token = Lex.getKind();
1366 default: // End of attributes.
1368 case lltok::StringConstant: {
1369 if (ParseStringAttribute(B))
1373 case lltok::kw_align: {
1375 if (ParseOptionalAlignment(Alignment))
1377 B.addAlignmentAttr(Alignment);
1380 case lltok::kw_byval: B.addAttribute(Attribute::ByVal); break;
1381 case lltok::kw_dereferenceable: {
1383 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1385 B.addDereferenceableAttr(Bytes);
1388 case lltok::kw_dereferenceable_or_null: {
1390 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1392 B.addDereferenceableOrNullAttr(Bytes);
1395 case lltok::kw_inalloca: B.addAttribute(Attribute::InAlloca); break;
1396 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1397 case lltok::kw_nest: B.addAttribute(Attribute::Nest); break;
1398 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1399 case lltok::kw_nocapture: B.addAttribute(Attribute::NoCapture); break;
1400 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1401 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1402 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1403 case lltok::kw_returned: B.addAttribute(Attribute::Returned); break;
1404 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1405 case lltok::kw_sret: B.addAttribute(Attribute::StructRet); break;
1406 case lltok::kw_swifterror: B.addAttribute(Attribute::SwiftError); break;
1407 case lltok::kw_swiftself: B.addAttribute(Attribute::SwiftSelf); break;
1408 case lltok::kw_writeonly: B.addAttribute(Attribute::WriteOnly); break;
1409 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1411 case lltok::kw_alignstack:
1412 case lltok::kw_alwaysinline:
1413 case lltok::kw_argmemonly:
1414 case lltok::kw_builtin:
1415 case lltok::kw_inlinehint:
1416 case lltok::kw_jumptable:
1417 case lltok::kw_minsize:
1418 case lltok::kw_naked:
1419 case lltok::kw_nobuiltin:
1420 case lltok::kw_noduplicate:
1421 case lltok::kw_noimplicitfloat:
1422 case lltok::kw_noinline:
1423 case lltok::kw_nonlazybind:
1424 case lltok::kw_noredzone:
1425 case lltok::kw_noreturn:
1426 case lltok::kw_nounwind:
1427 case lltok::kw_optnone:
1428 case lltok::kw_optsize:
1429 case lltok::kw_returns_twice:
1430 case lltok::kw_sanitize_address:
1431 case lltok::kw_sanitize_memory:
1432 case lltok::kw_sanitize_thread:
1434 case lltok::kw_sspreq:
1435 case lltok::kw_sspstrong:
1436 case lltok::kw_safestack:
1437 case lltok::kw_uwtable:
1438 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1446 /// ParseOptionalReturnAttrs - Parse a potentially empty list of return attributes.
1447 bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
1448 bool HaveError = false;
1453 lltok::Kind Token = Lex.getKind();
1455 default: // End of attributes.
1457 case lltok::StringConstant: {
1458 if (ParseStringAttribute(B))
1462 case lltok::kw_dereferenceable: {
1464 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1466 B.addDereferenceableAttr(Bytes);
1469 case lltok::kw_dereferenceable_or_null: {
1471 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1473 B.addDereferenceableOrNullAttr(Bytes);
1476 case lltok::kw_align: {
1478 if (ParseOptionalAlignment(Alignment))
1480 B.addAlignmentAttr(Alignment);
1483 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1484 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1485 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1486 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1487 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1490 case lltok::kw_byval:
1491 case lltok::kw_inalloca:
1492 case lltok::kw_nest:
1493 case lltok::kw_nocapture:
1494 case lltok::kw_returned:
1495 case lltok::kw_sret:
1496 case lltok::kw_swifterror:
1497 case lltok::kw_swiftself:
1498 HaveError |= Error(Lex.getLoc(), "invalid use of parameter-only attribute");
1501 case lltok::kw_alignstack:
1502 case lltok::kw_alwaysinline:
1503 case lltok::kw_argmemonly:
1504 case lltok::kw_builtin:
1505 case lltok::kw_cold:
1506 case lltok::kw_inlinehint:
1507 case lltok::kw_jumptable:
1508 case lltok::kw_minsize:
1509 case lltok::kw_naked:
1510 case lltok::kw_nobuiltin:
1511 case lltok::kw_noduplicate:
1512 case lltok::kw_noimplicitfloat:
1513 case lltok::kw_noinline:
1514 case lltok::kw_nonlazybind:
1515 case lltok::kw_noredzone:
1516 case lltok::kw_noreturn:
1517 case lltok::kw_nounwind:
1518 case lltok::kw_optnone:
1519 case lltok::kw_optsize:
1520 case lltok::kw_returns_twice:
1521 case lltok::kw_sanitize_address:
1522 case lltok::kw_sanitize_memory:
1523 case lltok::kw_sanitize_thread:
1525 case lltok::kw_sspreq:
1526 case lltok::kw_sspstrong:
1527 case lltok::kw_safestack:
1528 case lltok::kw_uwtable:
1529 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1532 case lltok::kw_readnone:
1533 case lltok::kw_readonly:
1534 HaveError |= Error(Lex.getLoc(), "invalid use of attribute on return type");
1541 static unsigned parseOptionalLinkageAux(lltok::Kind Kind, bool &HasLinkage) {
1546 return GlobalValue::ExternalLinkage;
1547 case lltok::kw_private:
1548 return GlobalValue::PrivateLinkage;
1549 case lltok::kw_internal:
1550 return GlobalValue::InternalLinkage;
1551 case lltok::kw_weak:
1552 return GlobalValue::WeakAnyLinkage;
1553 case lltok::kw_weak_odr:
1554 return GlobalValue::WeakODRLinkage;
1555 case lltok::kw_linkonce:
1556 return GlobalValue::LinkOnceAnyLinkage;
1557 case lltok::kw_linkonce_odr:
1558 return GlobalValue::LinkOnceODRLinkage;
1559 case lltok::kw_available_externally:
1560 return GlobalValue::AvailableExternallyLinkage;
1561 case lltok::kw_appending:
1562 return GlobalValue::AppendingLinkage;
1563 case lltok::kw_common:
1564 return GlobalValue::CommonLinkage;
1565 case lltok::kw_extern_weak:
1566 return GlobalValue::ExternalWeakLinkage;
1567 case lltok::kw_external:
1568 return GlobalValue::ExternalLinkage;
1572 /// ParseOptionalLinkage
1579 /// ::= 'linkonce_odr'
1580 /// ::= 'available_externally'
1583 /// ::= 'extern_weak'
1585 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage,
1586 unsigned &Visibility,
1587 unsigned &DLLStorageClass) {
1588 Res = parseOptionalLinkageAux(Lex.getKind(), HasLinkage);
1591 ParseOptionalVisibility(Visibility);
1592 ParseOptionalDLLStorageClass(DLLStorageClass);
1596 /// ParseOptionalVisibility
1602 void LLParser::ParseOptionalVisibility(unsigned &Res) {
1603 switch (Lex.getKind()) {
1605 Res = GlobalValue::DefaultVisibility;
1607 case lltok::kw_default:
1608 Res = GlobalValue::DefaultVisibility;
1610 case lltok::kw_hidden:
1611 Res = GlobalValue::HiddenVisibility;
1613 case lltok::kw_protected:
1614 Res = GlobalValue::ProtectedVisibility;
1620 /// ParseOptionalDLLStorageClass
1625 void LLParser::ParseOptionalDLLStorageClass(unsigned &Res) {
1626 switch (Lex.getKind()) {
1628 Res = GlobalValue::DefaultStorageClass;
1630 case lltok::kw_dllimport:
1631 Res = GlobalValue::DLLImportStorageClass;
1633 case lltok::kw_dllexport:
1634 Res = GlobalValue::DLLExportStorageClass;
1640 /// ParseOptionalCallingConv
1644 /// ::= 'intel_ocl_bicc'
1646 /// ::= 'x86_stdcallcc'
1647 /// ::= 'x86_fastcallcc'
1648 /// ::= 'x86_thiscallcc'
1649 /// ::= 'x86_vectorcallcc'
1650 /// ::= 'arm_apcscc'
1651 /// ::= 'arm_aapcscc'
1652 /// ::= 'arm_aapcs_vfpcc'
1653 /// ::= 'msp430_intrcc'
1654 /// ::= 'avr_intrcc'
1655 /// ::= 'avr_signalcc'
1656 /// ::= 'ptx_kernel'
1657 /// ::= 'ptx_device'
1659 /// ::= 'spir_kernel'
1660 /// ::= 'x86_64_sysvcc'
1661 /// ::= 'x86_64_win64cc'
1662 /// ::= 'webkit_jscc'
1664 /// ::= 'preserve_mostcc'
1665 /// ::= 'preserve_allcc'
1668 /// ::= 'x86_intrcc'
1671 /// ::= 'cxx_fast_tlscc'
1673 /// ::= 'amdgpu_tcs'
1674 /// ::= 'amdgpu_tes'
1678 /// ::= 'amdgpu_kernel'
1681 bool LLParser::ParseOptionalCallingConv(unsigned &CC) {
1682 switch (Lex.getKind()) {
1683 default: CC = CallingConv::C; return false;
1684 case lltok::kw_ccc: CC = CallingConv::C; break;
1685 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1686 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1687 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1688 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1689 case lltok::kw_x86_regcallcc: CC = CallingConv::X86_RegCall; break;
1690 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1691 case lltok::kw_x86_vectorcallcc:CC = CallingConv::X86_VectorCall; break;
1692 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1693 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1694 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1695 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1696 case lltok::kw_avr_intrcc: CC = CallingConv::AVR_INTR; break;
1697 case lltok::kw_avr_signalcc: CC = CallingConv::AVR_SIGNAL; break;
1698 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1699 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1700 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1701 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1702 case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1703 case lltok::kw_x86_64_sysvcc: CC = CallingConv::X86_64_SysV; break;
1704 case lltok::kw_x86_64_win64cc: CC = CallingConv::X86_64_Win64; break;
1705 case lltok::kw_webkit_jscc: CC = CallingConv::WebKit_JS; break;
1706 case lltok::kw_anyregcc: CC = CallingConv::AnyReg; break;
1707 case lltok::kw_preserve_mostcc:CC = CallingConv::PreserveMost; break;
1708 case lltok::kw_preserve_allcc: CC = CallingConv::PreserveAll; break;
1709 case lltok::kw_ghccc: CC = CallingConv::GHC; break;
1710 case lltok::kw_swiftcc: CC = CallingConv::Swift; break;
1711 case lltok::kw_x86_intrcc: CC = CallingConv::X86_INTR; break;
1712 case lltok::kw_hhvmcc: CC = CallingConv::HHVM; break;
1713 case lltok::kw_hhvm_ccc: CC = CallingConv::HHVM_C; break;
1714 case lltok::kw_cxx_fast_tlscc: CC = CallingConv::CXX_FAST_TLS; break;
1715 case lltok::kw_amdgpu_vs: CC = CallingConv::AMDGPU_VS; break;
1716 case lltok::kw_amdgpu_gs: CC = CallingConv::AMDGPU_GS; break;
1717 case lltok::kw_amdgpu_ps: CC = CallingConv::AMDGPU_PS; break;
1718 case lltok::kw_amdgpu_cs: CC = CallingConv::AMDGPU_CS; break;
1719 case lltok::kw_amdgpu_kernel: CC = CallingConv::AMDGPU_KERNEL; break;
1720 case lltok::kw_cc: {
1722 return ParseUInt32(CC);
1730 /// ParseMetadataAttachment
1732 bool LLParser::ParseMetadataAttachment(unsigned &Kind, MDNode *&MD) {
1733 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata attachment");
1735 std::string Name = Lex.getStrVal();
1736 Kind = M->getMDKindID(Name);
1739 return ParseMDNode(MD);
1742 /// ParseInstructionMetadata
1743 /// ::= !dbg !42 (',' !dbg !57)*
1744 bool LLParser::ParseInstructionMetadata(Instruction &Inst) {
1746 if (Lex.getKind() != lltok::MetadataVar)
1747 return TokError("expected metadata after comma");
1751 if (ParseMetadataAttachment(MDK, N))
1754 Inst.setMetadata(MDK, N);
1755 if (MDK == LLVMContext::MD_tbaa)
1756 InstsWithTBAATag.push_back(&Inst);
1758 // If this is the end of the list, we're done.
1759 } while (EatIfPresent(lltok::comma));
1763 /// ParseGlobalObjectMetadataAttachment
1765 bool LLParser::ParseGlobalObjectMetadataAttachment(GlobalObject &GO) {
1768 if (ParseMetadataAttachment(MDK, N))
1771 GO.addMetadata(MDK, *N);
1775 /// ParseOptionalFunctionMetadata
1777 bool LLParser::ParseOptionalFunctionMetadata(Function &F) {
1778 while (Lex.getKind() == lltok::MetadataVar)
1779 if (ParseGlobalObjectMetadataAttachment(F))
1784 /// ParseOptionalAlignment
1787 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1789 if (!EatIfPresent(lltok::kw_align))
1791 LocTy AlignLoc = Lex.getLoc();
1792 if (ParseUInt32(Alignment)) return true;
1793 if (!isPowerOf2_32(Alignment))
1794 return Error(AlignLoc, "alignment is not a power of two");
1795 if (Alignment > Value::MaximumAlignment)
1796 return Error(AlignLoc, "huge alignments are not supported yet");
1800 /// ParseOptionalDerefAttrBytes
1802 /// ::= AttrKind '(' 4 ')'
1804 /// where AttrKind is either 'dereferenceable' or 'dereferenceable_or_null'.
1805 bool LLParser::ParseOptionalDerefAttrBytes(lltok::Kind AttrKind,
1807 assert((AttrKind == lltok::kw_dereferenceable ||
1808 AttrKind == lltok::kw_dereferenceable_or_null) &&
1812 if (!EatIfPresent(AttrKind))
1814 LocTy ParenLoc = Lex.getLoc();
1815 if (!EatIfPresent(lltok::lparen))
1816 return Error(ParenLoc, "expected '('");
1817 LocTy DerefLoc = Lex.getLoc();
1818 if (ParseUInt64(Bytes)) return true;
1819 ParenLoc = Lex.getLoc();
1820 if (!EatIfPresent(lltok::rparen))
1821 return Error(ParenLoc, "expected ')'");
1823 return Error(DerefLoc, "dereferenceable bytes must be non-zero");
1827 /// ParseOptionalCommaAlign
1831 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1833 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1834 bool &AteExtraComma) {
1835 AteExtraComma = false;
1836 while (EatIfPresent(lltok::comma)) {
1837 // Metadata at the end is an early exit.
1838 if (Lex.getKind() == lltok::MetadataVar) {
1839 AteExtraComma = true;
1843 if (Lex.getKind() != lltok::kw_align)
1844 return Error(Lex.getLoc(), "expected metadata or 'align'");
1846 if (ParseOptionalAlignment(Alignment)) return true;
1852 /// ParseOptionalCommaAddrSpace
1854 /// ::= ',' addrspace(1)
1856 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1858 bool LLParser::ParseOptionalCommaAddrSpace(unsigned &AddrSpace,
1860 bool &AteExtraComma) {
1861 AteExtraComma = false;
1862 while (EatIfPresent(lltok::comma)) {
1863 // Metadata at the end is an early exit.
1864 if (Lex.getKind() == lltok::MetadataVar) {
1865 AteExtraComma = true;
1870 if (Lex.getKind() != lltok::kw_addrspace)
1871 return Error(Lex.getLoc(), "expected metadata or 'addrspace'");
1873 if (ParseOptionalAddrSpace(AddrSpace))
1880 bool LLParser::parseAllocSizeArguments(unsigned &BaseSizeArg,
1881 Optional<unsigned> &HowManyArg) {
1884 auto StartParen = Lex.getLoc();
1885 if (!EatIfPresent(lltok::lparen))
1886 return Error(StartParen, "expected '('");
1888 if (ParseUInt32(BaseSizeArg))
1891 if (EatIfPresent(lltok::comma)) {
1892 auto HowManyAt = Lex.getLoc();
1894 if (ParseUInt32(HowMany))
1896 if (HowMany == BaseSizeArg)
1897 return Error(HowManyAt,
1898 "'allocsize' indices can't refer to the same parameter");
1899 HowManyArg = HowMany;
1903 auto EndParen = Lex.getLoc();
1904 if (!EatIfPresent(lltok::rparen))
1905 return Error(EndParen, "expected ')'");
1909 /// ParseScopeAndOrdering
1910 /// if isAtomic: ::= 'singlethread'? AtomicOrdering
1913 /// This sets Scope and Ordering to the parsed values.
1914 bool LLParser::ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope,
1915 AtomicOrdering &Ordering) {
1919 Scope = CrossThread;
1920 if (EatIfPresent(lltok::kw_singlethread))
1921 Scope = SingleThread;
1923 return ParseOrdering(Ordering);
1927 /// ::= AtomicOrdering
1929 /// This sets Ordering to the parsed value.
1930 bool LLParser::ParseOrdering(AtomicOrdering &Ordering) {
1931 switch (Lex.getKind()) {
1932 default: return TokError("Expected ordering on atomic instruction");
1933 case lltok::kw_unordered: Ordering = AtomicOrdering::Unordered; break;
1934 case lltok::kw_monotonic: Ordering = AtomicOrdering::Monotonic; break;
1935 // Not specified yet:
1936 // case lltok::kw_consume: Ordering = AtomicOrdering::Consume; break;
1937 case lltok::kw_acquire: Ordering = AtomicOrdering::Acquire; break;
1938 case lltok::kw_release: Ordering = AtomicOrdering::Release; break;
1939 case lltok::kw_acq_rel: Ordering = AtomicOrdering::AcquireRelease; break;
1940 case lltok::kw_seq_cst:
1941 Ordering = AtomicOrdering::SequentiallyConsistent;
1948 /// ParseOptionalStackAlignment
1950 /// ::= 'alignstack' '(' 4 ')'
1951 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1953 if (!EatIfPresent(lltok::kw_alignstack))
1955 LocTy ParenLoc = Lex.getLoc();
1956 if (!EatIfPresent(lltok::lparen))
1957 return Error(ParenLoc, "expected '('");
1958 LocTy AlignLoc = Lex.getLoc();
1959 if (ParseUInt32(Alignment)) return true;
1960 ParenLoc = Lex.getLoc();
1961 if (!EatIfPresent(lltok::rparen))
1962 return Error(ParenLoc, "expected ')'");
1963 if (!isPowerOf2_32(Alignment))
1964 return Error(AlignLoc, "stack alignment is not a power of two");
1968 /// ParseIndexList - This parses the index list for an insert/extractvalue
1969 /// instruction. This sets AteExtraComma in the case where we eat an extra
1970 /// comma at the end of the line and find that it is followed by metadata.
1971 /// Clients that don't allow metadata can call the version of this function that
1972 /// only takes one argument.
1975 /// ::= (',' uint32)+
1977 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1978 bool &AteExtraComma) {
1979 AteExtraComma = false;
1981 if (Lex.getKind() != lltok::comma)
1982 return TokError("expected ',' as start of index list");
1984 while (EatIfPresent(lltok::comma)) {
1985 if (Lex.getKind() == lltok::MetadataVar) {
1986 if (Indices.empty()) return TokError("expected index");
1987 AteExtraComma = true;
1991 if (ParseUInt32(Idx)) return true;
1992 Indices.push_back(Idx);
1998 //===----------------------------------------------------------------------===//
2000 //===----------------------------------------------------------------------===//
2002 /// ParseType - Parse a type.
2003 bool LLParser::ParseType(Type *&Result, const Twine &Msg, bool AllowVoid) {
2004 SMLoc TypeLoc = Lex.getLoc();
2005 switch (Lex.getKind()) {
2007 return TokError(Msg);
2009 // Type ::= 'float' | 'void' (etc)
2010 Result = Lex.getTyVal();
2014 // Type ::= StructType
2015 if (ParseAnonStructType(Result, false))
2018 case lltok::lsquare:
2019 // Type ::= '[' ... ']'
2020 Lex.Lex(); // eat the lsquare.
2021 if (ParseArrayVectorType(Result, false))
2024 case lltok::less: // Either vector or packed struct.
2025 // Type ::= '<' ... '>'
2027 if (Lex.getKind() == lltok::lbrace) {
2028 if (ParseAnonStructType(Result, true) ||
2029 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
2031 } else if (ParseArrayVectorType(Result, true))
2034 case lltok::LocalVar: {
2036 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
2038 // If the type hasn't been defined yet, create a forward definition and
2039 // remember where that forward def'n was seen (in case it never is defined).
2041 Entry.first = StructType::create(Context, Lex.getStrVal());
2042 Entry.second = Lex.getLoc();
2044 Result = Entry.first;
2049 case lltok::LocalVarID: {
2051 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
2053 // If the type hasn't been defined yet, create a forward definition and
2054 // remember where that forward def'n was seen (in case it never is defined).
2056 Entry.first = StructType::create(Context);
2057 Entry.second = Lex.getLoc();
2059 Result = Entry.first;
2065 // Parse the type suffixes.
2067 switch (Lex.getKind()) {
2070 if (!AllowVoid && Result->isVoidTy())
2071 return Error(TypeLoc, "void type only allowed for function results");
2074 // Type ::= Type '*'
2076 if (Result->isLabelTy())
2077 return TokError("basic block pointers are invalid");
2078 if (Result->isVoidTy())
2079 return TokError("pointers to void are invalid - use i8* instead");
2080 if (!PointerType::isValidElementType(Result))
2081 return TokError("pointer to this type is invalid");
2082 Result = PointerType::getUnqual(Result);
2086 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
2087 case lltok::kw_addrspace: {
2088 if (Result->isLabelTy())
2089 return TokError("basic block pointers are invalid");
2090 if (Result->isVoidTy())
2091 return TokError("pointers to void are invalid; use i8* instead");
2092 if (!PointerType::isValidElementType(Result))
2093 return TokError("pointer to this type is invalid");
2095 if (ParseOptionalAddrSpace(AddrSpace) ||
2096 ParseToken(lltok::star, "expected '*' in address space"))
2099 Result = PointerType::get(Result, AddrSpace);
2103 /// Types '(' ArgTypeListI ')' OptFuncAttrs
2105 if (ParseFunctionType(Result))
2112 /// ParseParameterList
2114 /// ::= '(' Arg (',' Arg)* ')'
2116 /// ::= Type OptionalAttributes Value OptionalAttributes
2117 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
2118 PerFunctionState &PFS, bool IsMustTailCall,
2119 bool InVarArgsFunc) {
2120 if (ParseToken(lltok::lparen, "expected '(' in call"))
2123 while (Lex.getKind() != lltok::rparen) {
2124 // If this isn't the first argument, we need a comma.
2125 if (!ArgList.empty() &&
2126 ParseToken(lltok::comma, "expected ',' in argument list"))
2129 // Parse an ellipsis if this is a musttail call in a variadic function.
2130 if (Lex.getKind() == lltok::dotdotdot) {
2131 const char *Msg = "unexpected ellipsis in argument list for ";
2132 if (!IsMustTailCall)
2133 return TokError(Twine(Msg) + "non-musttail call");
2135 return TokError(Twine(Msg) + "musttail call in non-varargs function");
2136 Lex.Lex(); // Lex the '...', it is purely for readability.
2137 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
2140 // Parse the argument.
2142 Type *ArgTy = nullptr;
2143 AttrBuilder ArgAttrs;
2145 if (ParseType(ArgTy, ArgLoc))
2148 if (ArgTy->isMetadataTy()) {
2149 if (ParseMetadataAsValue(V, PFS))
2152 // Otherwise, handle normal operands.
2153 if (ParseOptionalParamAttrs(ArgAttrs) || ParseValue(ArgTy, V, PFS))
2156 ArgList.push_back(ParamInfo(
2157 ArgLoc, V, AttributeSet::get(V->getContext(), ArgAttrs)));
2160 if (IsMustTailCall && InVarArgsFunc)
2161 return TokError("expected '...' at end of argument list for musttail call "
2162 "in varargs function");
2164 Lex.Lex(); // Lex the ')'.
2168 /// ParseOptionalOperandBundles
2170 /// ::= '[' OperandBundle [, OperandBundle ]* ']'
2173 /// ::= bundle-tag '(' ')'
2174 /// ::= bundle-tag '(' Type Value [, Type Value ]* ')'
2176 /// bundle-tag ::= String Constant
2177 bool LLParser::ParseOptionalOperandBundles(
2178 SmallVectorImpl<OperandBundleDef> &BundleList, PerFunctionState &PFS) {
2179 LocTy BeginLoc = Lex.getLoc();
2180 if (!EatIfPresent(lltok::lsquare))
2183 while (Lex.getKind() != lltok::rsquare) {
2184 // If this isn't the first operand bundle, we need a comma.
2185 if (!BundleList.empty() &&
2186 ParseToken(lltok::comma, "expected ',' in input list"))
2190 if (ParseStringConstant(Tag))
2193 if (ParseToken(lltok::lparen, "expected '(' in operand bundle"))
2196 std::vector<Value *> Inputs;
2197 while (Lex.getKind() != lltok::rparen) {
2198 // If this isn't the first input, we need a comma.
2199 if (!Inputs.empty() &&
2200 ParseToken(lltok::comma, "expected ',' in input list"))
2204 Value *Input = nullptr;
2205 if (ParseType(Ty) || ParseValue(Ty, Input, PFS))
2207 Inputs.push_back(Input);
2210 BundleList.emplace_back(std::move(Tag), std::move(Inputs));
2212 Lex.Lex(); // Lex the ')'.
2215 if (BundleList.empty())
2216 return Error(BeginLoc, "operand bundle set must not be empty");
2218 Lex.Lex(); // Lex the ']'.
2222 /// ParseArgumentList - Parse the argument list for a function type or function
2224 /// ::= '(' ArgTypeListI ')'
2228 /// ::= ArgTypeList ',' '...'
2229 /// ::= ArgType (',' ArgType)*
2231 bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
2234 assert(Lex.getKind() == lltok::lparen);
2235 Lex.Lex(); // eat the (.
2237 if (Lex.getKind() == lltok::rparen) {
2239 } else if (Lex.getKind() == lltok::dotdotdot) {
2243 LocTy TypeLoc = Lex.getLoc();
2244 Type *ArgTy = nullptr;
2248 if (ParseType(ArgTy) ||
2249 ParseOptionalParamAttrs(Attrs)) return true;
2251 if (ArgTy->isVoidTy())
2252 return Error(TypeLoc, "argument can not have void type");
2254 if (Lex.getKind() == lltok::LocalVar) {
2255 Name = Lex.getStrVal();
2259 if (!FunctionType::isValidArgumentType(ArgTy))
2260 return Error(TypeLoc, "invalid type for function argument");
2262 ArgList.emplace_back(TypeLoc, ArgTy,
2263 AttributeSet::get(ArgTy->getContext(), Attrs),
2266 while (EatIfPresent(lltok::comma)) {
2267 // Handle ... at end of arg list.
2268 if (EatIfPresent(lltok::dotdotdot)) {
2273 // Otherwise must be an argument type.
2274 TypeLoc = Lex.getLoc();
2275 if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
2277 if (ArgTy->isVoidTy())
2278 return Error(TypeLoc, "argument can not have void type");
2280 if (Lex.getKind() == lltok::LocalVar) {
2281 Name = Lex.getStrVal();
2287 if (!ArgTy->isFirstClassType())
2288 return Error(TypeLoc, "invalid type for function argument");
2290 ArgList.emplace_back(TypeLoc, ArgTy,
2291 AttributeSet::get(ArgTy->getContext(), Attrs),
2296 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
2299 /// ParseFunctionType
2300 /// ::= Type ArgumentList OptionalAttrs
2301 bool LLParser::ParseFunctionType(Type *&Result) {
2302 assert(Lex.getKind() == lltok::lparen);
2304 if (!FunctionType::isValidReturnType(Result))
2305 return TokError("invalid function return type");
2307 SmallVector<ArgInfo, 8> ArgList;
2309 if (ParseArgumentList(ArgList, isVarArg))
2312 // Reject names on the arguments lists.
2313 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2314 if (!ArgList[i].Name.empty())
2315 return Error(ArgList[i].Loc, "argument name invalid in function type");
2316 if (ArgList[i].Attrs.hasAttributes())
2317 return Error(ArgList[i].Loc,
2318 "argument attributes invalid in function type");
2321 SmallVector<Type*, 16> ArgListTy;
2322 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
2323 ArgListTy.push_back(ArgList[i].Ty);
2325 Result = FunctionType::get(Result, ArgListTy, isVarArg);
2329 /// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
2331 bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
2332 SmallVector<Type*, 8> Elts;
2333 if (ParseStructBody(Elts)) return true;
2335 Result = StructType::get(Context, Elts, Packed);
2339 /// ParseStructDefinition - Parse a struct in a 'type' definition.
2340 bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
2341 std::pair<Type*, LocTy> &Entry,
2343 // If the type was already defined, diagnose the redefinition.
2344 if (Entry.first && !Entry.second.isValid())
2345 return Error(TypeLoc, "redefinition of type");
2347 // If we have opaque, just return without filling in the definition for the
2348 // struct. This counts as a definition as far as the .ll file goes.
2349 if (EatIfPresent(lltok::kw_opaque)) {
2350 // This type is being defined, so clear the location to indicate this.
2351 Entry.second = SMLoc();
2353 // If this type number has never been uttered, create it.
2355 Entry.first = StructType::create(Context, Name);
2356 ResultTy = Entry.first;
2360 // If the type starts with '<', then it is either a packed struct or a vector.
2361 bool isPacked = EatIfPresent(lltok::less);
2363 // If we don't have a struct, then we have a random type alias, which we
2364 // accept for compatibility with old files. These types are not allowed to be
2365 // forward referenced and not allowed to be recursive.
2366 if (Lex.getKind() != lltok::lbrace) {
2368 return Error(TypeLoc, "forward references to non-struct type");
2372 return ParseArrayVectorType(ResultTy, true);
2373 return ParseType(ResultTy);
2376 // This type is being defined, so clear the location to indicate this.
2377 Entry.second = SMLoc();
2379 // If this type number has never been uttered, create it.
2381 Entry.first = StructType::create(Context, Name);
2383 StructType *STy = cast<StructType>(Entry.first);
2385 SmallVector<Type*, 8> Body;
2386 if (ParseStructBody(Body) ||
2387 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
2390 STy->setBody(Body, isPacked);
2395 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
2398 /// ::= '{' Type (',' Type)* '}'
2399 /// ::= '<' '{' '}' '>'
2400 /// ::= '<' '{' Type (',' Type)* '}' '>'
2401 bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
2402 assert(Lex.getKind() == lltok::lbrace);
2403 Lex.Lex(); // Consume the '{'
2405 // Handle the empty struct.
2406 if (EatIfPresent(lltok::rbrace))
2409 LocTy EltTyLoc = Lex.getLoc();
2411 if (ParseType(Ty)) return true;
2414 if (!StructType::isValidElementType(Ty))
2415 return Error(EltTyLoc, "invalid element type for struct");
2417 while (EatIfPresent(lltok::comma)) {
2418 EltTyLoc = Lex.getLoc();
2419 if (ParseType(Ty)) return true;
2421 if (!StructType::isValidElementType(Ty))
2422 return Error(EltTyLoc, "invalid element type for struct");
2427 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
2430 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
2431 /// token has already been consumed.
2433 /// ::= '[' APSINTVAL 'x' Types ']'
2434 /// ::= '<' APSINTVAL 'x' Types '>'
2435 bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
2436 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
2437 Lex.getAPSIntVal().getBitWidth() > 64)
2438 return TokError("expected number in address space");
2440 LocTy SizeLoc = Lex.getLoc();
2441 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
2444 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
2447 LocTy TypeLoc = Lex.getLoc();
2448 Type *EltTy = nullptr;
2449 if (ParseType(EltTy)) return true;
2451 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
2452 "expected end of sequential type"))
2457 return Error(SizeLoc, "zero element vector is illegal");
2458 if ((unsigned)Size != Size)
2459 return Error(SizeLoc, "size too large for vector");
2460 if (!VectorType::isValidElementType(EltTy))
2461 return Error(TypeLoc, "invalid vector element type");
2462 Result = VectorType::get(EltTy, unsigned(Size));
2464 if (!ArrayType::isValidElementType(EltTy))
2465 return Error(TypeLoc, "invalid array element type");
2466 Result = ArrayType::get(EltTy, Size);
2471 //===----------------------------------------------------------------------===//
2472 // Function Semantic Analysis.
2473 //===----------------------------------------------------------------------===//
2475 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
2477 : P(p), F(f), FunctionNumber(functionNumber) {
2479 // Insert unnamed arguments into the NumberedVals list.
2480 for (Argument &A : F.args())
2482 NumberedVals.push_back(&A);
2485 LLParser::PerFunctionState::~PerFunctionState() {
2486 // If there were any forward referenced non-basicblock values, delete them.
2488 for (const auto &P : ForwardRefVals) {
2489 if (isa<BasicBlock>(P.second.first))
2491 P.second.first->replaceAllUsesWith(
2492 UndefValue::get(P.second.first->getType()));
2493 delete P.second.first;
2496 for (const auto &P : ForwardRefValIDs) {
2497 if (isa<BasicBlock>(P.second.first))
2499 P.second.first->replaceAllUsesWith(
2500 UndefValue::get(P.second.first->getType()));
2501 delete P.second.first;
2505 bool LLParser::PerFunctionState::FinishFunction() {
2506 if (!ForwardRefVals.empty())
2507 return P.Error(ForwardRefVals.begin()->second.second,
2508 "use of undefined value '%" + ForwardRefVals.begin()->first +
2510 if (!ForwardRefValIDs.empty())
2511 return P.Error(ForwardRefValIDs.begin()->second.second,
2512 "use of undefined value '%" +
2513 Twine(ForwardRefValIDs.begin()->first) + "'");
2517 /// GetVal - Get a value with the specified name or ID, creating a
2518 /// forward reference record if needed. This can return null if the value
2519 /// exists but does not have the right type.
2520 Value *LLParser::PerFunctionState::GetVal(const std::string &Name, Type *Ty,
2522 // Look this name up in the normal function symbol table.
2523 Value *Val = F.getValueSymbolTable()->lookup(Name);
2525 // If this is a forward reference for the value, see if we already created a
2526 // forward ref record.
2528 auto I = ForwardRefVals.find(Name);
2529 if (I != ForwardRefVals.end())
2530 Val = I->second.first;
2533 // If we have the value in the symbol table or fwd-ref table, return it.
2535 if (Val->getType() == Ty) return Val;
2536 if (Ty->isLabelTy())
2537 P.Error(Loc, "'%" + Name + "' is not a basic block");
2539 P.Error(Loc, "'%" + Name + "' defined with type '" +
2540 getTypeString(Val->getType()) + "'");
2544 // Don't make placeholders with invalid type.
2545 if (!Ty->isFirstClassType()) {
2546 P.Error(Loc, "invalid use of a non-first-class type");
2550 // Otherwise, create a new forward reference for this value and remember it.
2552 if (Ty->isLabelTy()) {
2553 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2555 FwdVal = new Argument(Ty, Name);
2558 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2562 Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty, LocTy Loc) {
2563 // Look this name up in the normal function symbol table.
2564 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
2566 // If this is a forward reference for the value, see if we already created a
2567 // forward ref record.
2569 auto I = ForwardRefValIDs.find(ID);
2570 if (I != ForwardRefValIDs.end())
2571 Val = I->second.first;
2574 // If we have the value in the symbol table or fwd-ref table, return it.
2576 if (Val->getType() == Ty) return Val;
2577 if (Ty->isLabelTy())
2578 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
2580 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
2581 getTypeString(Val->getType()) + "'");
2585 if (!Ty->isFirstClassType()) {
2586 P.Error(Loc, "invalid use of a non-first-class type");
2590 // Otherwise, create a new forward reference for this value and remember it.
2592 if (Ty->isLabelTy()) {
2593 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2595 FwdVal = new Argument(Ty);
2598 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2602 /// SetInstName - After an instruction is parsed and inserted into its
2603 /// basic block, this installs its name.
2604 bool LLParser::PerFunctionState::SetInstName(int NameID,
2605 const std::string &NameStr,
2606 LocTy NameLoc, Instruction *Inst) {
2607 // If this instruction has void type, it cannot have a name or ID specified.
2608 if (Inst->getType()->isVoidTy()) {
2609 if (NameID != -1 || !NameStr.empty())
2610 return P.Error(NameLoc, "instructions returning void cannot have a name");
2614 // If this was a numbered instruction, verify that the instruction is the
2615 // expected value and resolve any forward references.
2616 if (NameStr.empty()) {
2617 // If neither a name nor an ID was specified, just use the next ID.
2619 NameID = NumberedVals.size();
2621 if (unsigned(NameID) != NumberedVals.size())
2622 return P.Error(NameLoc, "instruction expected to be numbered '%" +
2623 Twine(NumberedVals.size()) + "'");
2625 auto FI = ForwardRefValIDs.find(NameID);
2626 if (FI != ForwardRefValIDs.end()) {
2627 Value *Sentinel = FI->second.first;
2628 if (Sentinel->getType() != Inst->getType())
2629 return P.Error(NameLoc, "instruction forward referenced with type '" +
2630 getTypeString(FI->second.first->getType()) + "'");
2632 Sentinel->replaceAllUsesWith(Inst);
2634 ForwardRefValIDs.erase(FI);
2637 NumberedVals.push_back(Inst);
2641 // Otherwise, the instruction had a name. Resolve forward refs and set it.
2642 auto FI = ForwardRefVals.find(NameStr);
2643 if (FI != ForwardRefVals.end()) {
2644 Value *Sentinel = FI->second.first;
2645 if (Sentinel->getType() != Inst->getType())
2646 return P.Error(NameLoc, "instruction forward referenced with type '" +
2647 getTypeString(FI->second.first->getType()) + "'");
2649 Sentinel->replaceAllUsesWith(Inst);
2651 ForwardRefVals.erase(FI);
2654 // Set the name on the instruction.
2655 Inst->setName(NameStr);
2657 if (Inst->getName() != NameStr)
2658 return P.Error(NameLoc, "multiple definition of local value named '" +
2663 /// GetBB - Get a basic block with the specified name or ID, creating a
2664 /// forward reference record if needed.
2665 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2667 return dyn_cast_or_null<BasicBlock>(GetVal(Name,
2668 Type::getLabelTy(F.getContext()), Loc));
2671 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2672 return dyn_cast_or_null<BasicBlock>(GetVal(ID,
2673 Type::getLabelTy(F.getContext()), Loc));
2676 /// DefineBB - Define the specified basic block, which is either named or
2677 /// unnamed. If there is an error, this returns null otherwise it returns
2678 /// the block being defined.
2679 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2683 BB = GetBB(NumberedVals.size(), Loc);
2685 BB = GetBB(Name, Loc);
2686 if (!BB) return nullptr; // Already diagnosed error.
2688 // Move the block to the end of the function. Forward ref'd blocks are
2689 // inserted wherever they happen to be referenced.
2690 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2692 // Remove the block from forward ref sets.
2694 ForwardRefValIDs.erase(NumberedVals.size());
2695 NumberedVals.push_back(BB);
2697 // BB forward references are already in the function symbol table.
2698 ForwardRefVals.erase(Name);
2704 //===----------------------------------------------------------------------===//
2706 //===----------------------------------------------------------------------===//
2708 /// ParseValID - Parse an abstract value that doesn't necessarily have a
2709 /// type implied. For example, if we parse "4" we don't know what integer type
2710 /// it has. The value will later be combined with its type and checked for
2711 /// sanity. PFS is used to convert function-local operands of metadata (since
2712 /// metadata operands are not just parsed here but also converted to values).
2713 /// PFS can be null when we are not parsing metadata values inside a function.
2714 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2715 ID.Loc = Lex.getLoc();
2716 switch (Lex.getKind()) {
2717 default: return TokError("expected value token");
2718 case lltok::GlobalID: // @42
2719 ID.UIntVal = Lex.getUIntVal();
2720 ID.Kind = ValID::t_GlobalID;
2722 case lltok::GlobalVar: // @foo
2723 ID.StrVal = Lex.getStrVal();
2724 ID.Kind = ValID::t_GlobalName;
2726 case lltok::LocalVarID: // %42
2727 ID.UIntVal = Lex.getUIntVal();
2728 ID.Kind = ValID::t_LocalID;
2730 case lltok::LocalVar: // %foo
2731 ID.StrVal = Lex.getStrVal();
2732 ID.Kind = ValID::t_LocalName;
2735 ID.APSIntVal = Lex.getAPSIntVal();
2736 ID.Kind = ValID::t_APSInt;
2738 case lltok::APFloat:
2739 ID.APFloatVal = Lex.getAPFloatVal();
2740 ID.Kind = ValID::t_APFloat;
2742 case lltok::kw_true:
2743 ID.ConstantVal = ConstantInt::getTrue(Context);
2744 ID.Kind = ValID::t_Constant;
2746 case lltok::kw_false:
2747 ID.ConstantVal = ConstantInt::getFalse(Context);
2748 ID.Kind = ValID::t_Constant;
2750 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2751 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2752 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2753 case lltok::kw_none: ID.Kind = ValID::t_None; break;
2755 case lltok::lbrace: {
2756 // ValID ::= '{' ConstVector '}'
2758 SmallVector<Constant*, 16> Elts;
2759 if (ParseGlobalValueVector(Elts) ||
2760 ParseToken(lltok::rbrace, "expected end of struct constant"))
2763 ID.ConstantStructElts = make_unique<Constant *[]>(Elts.size());
2764 ID.UIntVal = Elts.size();
2765 memcpy(ID.ConstantStructElts.get(), Elts.data(),
2766 Elts.size() * sizeof(Elts[0]));
2767 ID.Kind = ValID::t_ConstantStruct;
2771 // ValID ::= '<' ConstVector '>' --> Vector.
2772 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2774 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2776 SmallVector<Constant*, 16> Elts;
2777 LocTy FirstEltLoc = Lex.getLoc();
2778 if (ParseGlobalValueVector(Elts) ||
2780 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2781 ParseToken(lltok::greater, "expected end of constant"))
2784 if (isPackedStruct) {
2785 ID.ConstantStructElts = make_unique<Constant *[]>(Elts.size());
2786 memcpy(ID.ConstantStructElts.get(), Elts.data(),
2787 Elts.size() * sizeof(Elts[0]));
2788 ID.UIntVal = Elts.size();
2789 ID.Kind = ValID::t_PackedConstantStruct;
2794 return Error(ID.Loc, "constant vector must not be empty");
2796 if (!Elts[0]->getType()->isIntegerTy() &&
2797 !Elts[0]->getType()->isFloatingPointTy() &&
2798 !Elts[0]->getType()->isPointerTy())
2799 return Error(FirstEltLoc,
2800 "vector elements must have integer, pointer or floating point type");
2802 // Verify that all the vector elements have the same type.
2803 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2804 if (Elts[i]->getType() != Elts[0]->getType())
2805 return Error(FirstEltLoc,
2806 "vector element #" + Twine(i) +
2807 " is not of type '" + getTypeString(Elts[0]->getType()));
2809 ID.ConstantVal = ConstantVector::get(Elts);
2810 ID.Kind = ValID::t_Constant;
2813 case lltok::lsquare: { // Array Constant
2815 SmallVector<Constant*, 16> Elts;
2816 LocTy FirstEltLoc = Lex.getLoc();
2817 if (ParseGlobalValueVector(Elts) ||
2818 ParseToken(lltok::rsquare, "expected end of array constant"))
2821 // Handle empty element.
2823 // Use undef instead of an array because it's inconvenient to determine
2824 // the element type at this point, there being no elements to examine.
2825 ID.Kind = ValID::t_EmptyArray;
2829 if (!Elts[0]->getType()->isFirstClassType())
2830 return Error(FirstEltLoc, "invalid array element type: " +
2831 getTypeString(Elts[0]->getType()));
2833 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2835 // Verify all elements are correct type!
2836 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2837 if (Elts[i]->getType() != Elts[0]->getType())
2838 return Error(FirstEltLoc,
2839 "array element #" + Twine(i) +
2840 " is not of type '" + getTypeString(Elts[0]->getType()));
2843 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2844 ID.Kind = ValID::t_Constant;
2847 case lltok::kw_c: // c "foo"
2849 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2851 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2852 ID.Kind = ValID::t_Constant;
2855 case lltok::kw_asm: {
2856 // ValID ::= 'asm' SideEffect? AlignStack? IntelDialect? STRINGCONSTANT ','
2858 bool HasSideEffect, AlignStack, AsmDialect;
2860 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2861 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2862 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2863 ParseStringConstant(ID.StrVal) ||
2864 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2865 ParseToken(lltok::StringConstant, "expected constraint string"))
2867 ID.StrVal2 = Lex.getStrVal();
2868 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2869 (unsigned(AsmDialect)<<2);
2870 ID.Kind = ValID::t_InlineAsm;
2874 case lltok::kw_blockaddress: {
2875 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2880 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2882 ParseToken(lltok::comma, "expected comma in block address expression")||
2883 ParseValID(Label) ||
2884 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2887 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2888 return Error(Fn.Loc, "expected function name in blockaddress");
2889 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2890 return Error(Label.Loc, "expected basic block name in blockaddress");
2892 // Try to find the function (but skip it if it's forward-referenced).
2893 GlobalValue *GV = nullptr;
2894 if (Fn.Kind == ValID::t_GlobalID) {
2895 if (Fn.UIntVal < NumberedVals.size())
2896 GV = NumberedVals[Fn.UIntVal];
2897 } else if (!ForwardRefVals.count(Fn.StrVal)) {
2898 GV = M->getNamedValue(Fn.StrVal);
2900 Function *F = nullptr;
2902 // Confirm that it's actually a function with a definition.
2903 if (!isa<Function>(GV))
2904 return Error(Fn.Loc, "expected function name in blockaddress");
2905 F = cast<Function>(GV);
2906 if (F->isDeclaration())
2907 return Error(Fn.Loc, "cannot take blockaddress inside a declaration");
2911 // Make a global variable as a placeholder for this reference.
2912 GlobalValue *&FwdRef =
2913 ForwardRefBlockAddresses.insert(std::make_pair(
2915 std::map<ValID, GlobalValue *>()))
2916 .first->second.insert(std::make_pair(std::move(Label), nullptr))
2919 FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context), false,
2920 GlobalValue::InternalLinkage, nullptr, "");
2921 ID.ConstantVal = FwdRef;
2922 ID.Kind = ValID::t_Constant;
2926 // We found the function; now find the basic block. Don't use PFS, since we
2927 // might be inside a constant expression.
2929 if (BlockAddressPFS && F == &BlockAddressPFS->getFunction()) {
2930 if (Label.Kind == ValID::t_LocalID)
2931 BB = BlockAddressPFS->GetBB(Label.UIntVal, Label.Loc);
2933 BB = BlockAddressPFS->GetBB(Label.StrVal, Label.Loc);
2935 return Error(Label.Loc, "referenced value is not a basic block");
2937 if (Label.Kind == ValID::t_LocalID)
2938 return Error(Label.Loc, "cannot take address of numeric label after "
2939 "the function is defined");
2940 BB = dyn_cast_or_null<BasicBlock>(
2941 F->getValueSymbolTable()->lookup(Label.StrVal));
2943 return Error(Label.Loc, "referenced value is not a basic block");
2946 ID.ConstantVal = BlockAddress::get(F, BB);
2947 ID.Kind = ValID::t_Constant;
2951 case lltok::kw_trunc:
2952 case lltok::kw_zext:
2953 case lltok::kw_sext:
2954 case lltok::kw_fptrunc:
2955 case lltok::kw_fpext:
2956 case lltok::kw_bitcast:
2957 case lltok::kw_addrspacecast:
2958 case lltok::kw_uitofp:
2959 case lltok::kw_sitofp:
2960 case lltok::kw_fptoui:
2961 case lltok::kw_fptosi:
2962 case lltok::kw_inttoptr:
2963 case lltok::kw_ptrtoint: {
2964 unsigned Opc = Lex.getUIntVal();
2965 Type *DestTy = nullptr;
2968 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2969 ParseGlobalTypeAndValue(SrcVal) ||
2970 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2971 ParseType(DestTy) ||
2972 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2974 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2975 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2976 getTypeString(SrcVal->getType()) + "' to '" +
2977 getTypeString(DestTy) + "'");
2978 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2980 ID.Kind = ValID::t_Constant;
2983 case lltok::kw_extractvalue: {
2986 SmallVector<unsigned, 4> Indices;
2987 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2988 ParseGlobalTypeAndValue(Val) ||
2989 ParseIndexList(Indices) ||
2990 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2993 if (!Val->getType()->isAggregateType())
2994 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2995 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
2996 return Error(ID.Loc, "invalid indices for extractvalue");
2997 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
2998 ID.Kind = ValID::t_Constant;
3001 case lltok::kw_insertvalue: {
3003 Constant *Val0, *Val1;
3004 SmallVector<unsigned, 4> Indices;
3005 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
3006 ParseGlobalTypeAndValue(Val0) ||
3007 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
3008 ParseGlobalTypeAndValue(Val1) ||
3009 ParseIndexList(Indices) ||
3010 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
3012 if (!Val0->getType()->isAggregateType())
3013 return Error(ID.Loc, "insertvalue operand must be aggregate type");
3015 ExtractValueInst::getIndexedType(Val0->getType(), Indices);
3017 return Error(ID.Loc, "invalid indices for insertvalue");
3018 if (IndexedType != Val1->getType())
3019 return Error(ID.Loc, "insertvalue operand and field disagree in type: '" +
3020 getTypeString(Val1->getType()) +
3021 "' instead of '" + getTypeString(IndexedType) +
3023 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
3024 ID.Kind = ValID::t_Constant;
3027 case lltok::kw_icmp:
3028 case lltok::kw_fcmp: {
3029 unsigned PredVal, Opc = Lex.getUIntVal();
3030 Constant *Val0, *Val1;
3032 if (ParseCmpPredicate(PredVal, Opc) ||
3033 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
3034 ParseGlobalTypeAndValue(Val0) ||
3035 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
3036 ParseGlobalTypeAndValue(Val1) ||
3037 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
3040 if (Val0->getType() != Val1->getType())
3041 return Error(ID.Loc, "compare operands must have the same type");
3043 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
3045 if (Opc == Instruction::FCmp) {
3046 if (!Val0->getType()->isFPOrFPVectorTy())
3047 return Error(ID.Loc, "fcmp requires floating point operands");
3048 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
3050 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
3051 if (!Val0->getType()->isIntOrIntVectorTy() &&
3052 !Val0->getType()->getScalarType()->isPointerTy())
3053 return Error(ID.Loc, "icmp requires pointer or integer operands");
3054 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
3056 ID.Kind = ValID::t_Constant;
3060 // Binary Operators.
3062 case lltok::kw_fadd:
3064 case lltok::kw_fsub:
3066 case lltok::kw_fmul:
3067 case lltok::kw_udiv:
3068 case lltok::kw_sdiv:
3069 case lltok::kw_fdiv:
3070 case lltok::kw_urem:
3071 case lltok::kw_srem:
3072 case lltok::kw_frem:
3074 case lltok::kw_lshr:
3075 case lltok::kw_ashr: {
3079 unsigned Opc = Lex.getUIntVal();
3080 Constant *Val0, *Val1;
3082 LocTy ModifierLoc = Lex.getLoc();
3083 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
3084 Opc == Instruction::Mul || Opc == Instruction::Shl) {
3085 if (EatIfPresent(lltok::kw_nuw))
3087 if (EatIfPresent(lltok::kw_nsw)) {
3089 if (EatIfPresent(lltok::kw_nuw))
3092 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
3093 Opc == Instruction::LShr || Opc == Instruction::AShr) {
3094 if (EatIfPresent(lltok::kw_exact))
3097 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
3098 ParseGlobalTypeAndValue(Val0) ||
3099 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
3100 ParseGlobalTypeAndValue(Val1) ||
3101 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
3103 if (Val0->getType() != Val1->getType())
3104 return Error(ID.Loc, "operands of constexpr must have same type");
3105 if (!Val0->getType()->isIntOrIntVectorTy()) {
3107 return Error(ModifierLoc, "nuw only applies to integer operations");
3109 return Error(ModifierLoc, "nsw only applies to integer operations");
3111 // Check that the type is valid for the operator.
3113 case Instruction::Add:
3114 case Instruction::Sub:
3115 case Instruction::Mul:
3116 case Instruction::UDiv:
3117 case Instruction::SDiv:
3118 case Instruction::URem:
3119 case Instruction::SRem:
3120 case Instruction::Shl:
3121 case Instruction::AShr:
3122 case Instruction::LShr:
3123 if (!Val0->getType()->isIntOrIntVectorTy())
3124 return Error(ID.Loc, "constexpr requires integer operands");
3126 case Instruction::FAdd:
3127 case Instruction::FSub:
3128 case Instruction::FMul:
3129 case Instruction::FDiv:
3130 case Instruction::FRem:
3131 if (!Val0->getType()->isFPOrFPVectorTy())
3132 return Error(ID.Loc, "constexpr requires fp operands");
3134 default: llvm_unreachable("Unknown binary operator!");
3137 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
3138 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
3139 if (Exact) Flags |= PossiblyExactOperator::IsExact;
3140 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
3142 ID.Kind = ValID::t_Constant;
3146 // Logical Operations
3149 case lltok::kw_xor: {
3150 unsigned Opc = Lex.getUIntVal();
3151 Constant *Val0, *Val1;
3153 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
3154 ParseGlobalTypeAndValue(Val0) ||
3155 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
3156 ParseGlobalTypeAndValue(Val1) ||
3157 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
3159 if (Val0->getType() != Val1->getType())
3160 return Error(ID.Loc, "operands of constexpr must have same type");
3161 if (!Val0->getType()->isIntOrIntVectorTy())
3162 return Error(ID.Loc,
3163 "constexpr requires integer or integer vector operands");
3164 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
3165 ID.Kind = ValID::t_Constant;
3169 case lltok::kw_getelementptr:
3170 case lltok::kw_shufflevector:
3171 case lltok::kw_insertelement:
3172 case lltok::kw_extractelement:
3173 case lltok::kw_select: {
3174 unsigned Opc = Lex.getUIntVal();
3175 SmallVector<Constant*, 16> Elts;
3176 bool InBounds = false;
3180 if (Opc == Instruction::GetElementPtr)
3181 InBounds = EatIfPresent(lltok::kw_inbounds);
3183 if (ParseToken(lltok::lparen, "expected '(' in constantexpr"))
3186 LocTy ExplicitTypeLoc = Lex.getLoc();
3187 if (Opc == Instruction::GetElementPtr) {
3188 if (ParseType(Ty) ||
3189 ParseToken(lltok::comma, "expected comma after getelementptr's type"))
3193 Optional<unsigned> InRangeOp;
3194 if (ParseGlobalValueVector(
3195 Elts, Opc == Instruction::GetElementPtr ? &InRangeOp : nullptr) ||
3196 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
3199 if (Opc == Instruction::GetElementPtr) {
3200 if (Elts.size() == 0 ||
3201 !Elts[0]->getType()->getScalarType()->isPointerTy())
3202 return Error(ID.Loc, "base of getelementptr must be a pointer");
3204 Type *BaseType = Elts[0]->getType();
3205 auto *BasePointerType = cast<PointerType>(BaseType->getScalarType());
3206 if (Ty != BasePointerType->getElementType())
3209 "explicit pointee type doesn't match operand's pointee type");
3212 BaseType->isVectorTy() ? BaseType->getVectorNumElements() : 0;
3214 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
3215 for (Constant *Val : Indices) {
3216 Type *ValTy = Val->getType();
3217 if (!ValTy->getScalarType()->isIntegerTy())
3218 return Error(ID.Loc, "getelementptr index must be an integer");
3219 if (ValTy->isVectorTy()) {
3220 unsigned ValNumEl = ValTy->getVectorNumElements();
3221 if (GEPWidth && (ValNumEl != GEPWidth))
3224 "getelementptr vector index has a wrong number of elements");
3225 // GEPWidth may have been unknown because the base is a scalar,
3226 // but it is known now.
3227 GEPWidth = ValNumEl;
3231 SmallPtrSet<Type*, 4> Visited;
3232 if (!Indices.empty() && !Ty->isSized(&Visited))
3233 return Error(ID.Loc, "base element of getelementptr must be sized");
3235 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
3236 return Error(ID.Loc, "invalid getelementptr indices");
3239 if (*InRangeOp == 0)
3240 return Error(ID.Loc,
3241 "inrange keyword may not appear on pointer operand");
3245 ID.ConstantVal = ConstantExpr::getGetElementPtr(Ty, Elts[0], Indices,
3246 InBounds, InRangeOp);
3247 } else if (Opc == Instruction::Select) {
3248 if (Elts.size() != 3)
3249 return Error(ID.Loc, "expected three operands to select");
3250 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
3252 return Error(ID.Loc, Reason);
3253 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
3254 } else if (Opc == Instruction::ShuffleVector) {
3255 if (Elts.size() != 3)
3256 return Error(ID.Loc, "expected three operands to shufflevector");
3257 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
3258 return Error(ID.Loc, "invalid operands to shufflevector");
3260 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
3261 } else if (Opc == Instruction::ExtractElement) {
3262 if (Elts.size() != 2)
3263 return Error(ID.Loc, "expected two operands to extractelement");
3264 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
3265 return Error(ID.Loc, "invalid extractelement operands");
3266 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
3268 assert(Opc == Instruction::InsertElement && "Unknown opcode");
3269 if (Elts.size() != 3)
3270 return Error(ID.Loc, "expected three operands to insertelement");
3271 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
3272 return Error(ID.Loc, "invalid insertelement operands");
3274 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
3277 ID.Kind = ValID::t_Constant;
3286 /// ParseGlobalValue - Parse a global value with the specified type.
3287 bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
3291 bool Parsed = ParseValID(ID) ||
3292 ConvertValIDToValue(Ty, ID, V, nullptr);
3293 if (V && !(C = dyn_cast<Constant>(V)))
3294 return Error(ID.Loc, "global values must be constants");
3298 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
3300 return ParseType(Ty) ||
3301 ParseGlobalValue(Ty, V);
3304 bool LLParser::parseOptionalComdat(StringRef GlobalName, Comdat *&C) {
3307 LocTy KwLoc = Lex.getLoc();
3308 if (!EatIfPresent(lltok::kw_comdat))
3311 if (EatIfPresent(lltok::lparen)) {
3312 if (Lex.getKind() != lltok::ComdatVar)
3313 return TokError("expected comdat variable");
3314 C = getComdat(Lex.getStrVal(), Lex.getLoc());
3316 if (ParseToken(lltok::rparen, "expected ')' after comdat var"))
3319 if (GlobalName.empty())
3320 return TokError("comdat cannot be unnamed");
3321 C = getComdat(GlobalName, KwLoc);
3327 /// ParseGlobalValueVector
3329 /// ::= [inrange] TypeAndValue (',' [inrange] TypeAndValue)*
3330 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant *> &Elts,
3331 Optional<unsigned> *InRangeOp) {
3333 if (Lex.getKind() == lltok::rbrace ||
3334 Lex.getKind() == lltok::rsquare ||
3335 Lex.getKind() == lltok::greater ||
3336 Lex.getKind() == lltok::rparen)
3340 if (InRangeOp && !*InRangeOp && EatIfPresent(lltok::kw_inrange))
3341 *InRangeOp = Elts.size();
3344 if (ParseGlobalTypeAndValue(C)) return true;
3346 } while (EatIfPresent(lltok::comma));
3351 bool LLParser::ParseMDTuple(MDNode *&MD, bool IsDistinct) {
3352 SmallVector<Metadata *, 16> Elts;
3353 if (ParseMDNodeVector(Elts))
3356 MD = (IsDistinct ? MDTuple::getDistinct : MDTuple::get)(Context, Elts);
3363 /// ::= !DILocation(...)
3364 bool LLParser::ParseMDNode(MDNode *&N) {
3365 if (Lex.getKind() == lltok::MetadataVar)
3366 return ParseSpecializedMDNode(N);
3368 return ParseToken(lltok::exclaim, "expected '!' here") ||
3372 bool LLParser::ParseMDNodeTail(MDNode *&N) {
3374 if (Lex.getKind() == lltok::lbrace)
3375 return ParseMDTuple(N);
3378 return ParseMDNodeID(N);
3383 /// Structure to represent an optional metadata field.
3384 template <class FieldTy> struct MDFieldImpl {
3385 typedef MDFieldImpl ImplTy;
3389 void assign(FieldTy Val) {
3391 this->Val = std::move(Val);
3394 explicit MDFieldImpl(FieldTy Default)
3395 : Val(std::move(Default)), Seen(false) {}
3398 struct MDUnsignedField : public MDFieldImpl<uint64_t> {
3401 MDUnsignedField(uint64_t Default = 0, uint64_t Max = UINT64_MAX)
3402 : ImplTy(Default), Max(Max) {}
3405 struct LineField : public MDUnsignedField {
3406 LineField() : MDUnsignedField(0, UINT32_MAX) {}
3409 struct ColumnField : public MDUnsignedField {
3410 ColumnField() : MDUnsignedField(0, UINT16_MAX) {}
3413 struct DwarfTagField : public MDUnsignedField {
3414 DwarfTagField() : MDUnsignedField(0, dwarf::DW_TAG_hi_user) {}
3415 DwarfTagField(dwarf::Tag DefaultTag)
3416 : MDUnsignedField(DefaultTag, dwarf::DW_TAG_hi_user) {}
3419 struct DwarfMacinfoTypeField : public MDUnsignedField {
3420 DwarfMacinfoTypeField() : MDUnsignedField(0, dwarf::DW_MACINFO_vendor_ext) {}
3421 DwarfMacinfoTypeField(dwarf::MacinfoRecordType DefaultType)
3422 : MDUnsignedField(DefaultType, dwarf::DW_MACINFO_vendor_ext) {}
3425 struct DwarfAttEncodingField : public MDUnsignedField {
3426 DwarfAttEncodingField() : MDUnsignedField(0, dwarf::DW_ATE_hi_user) {}
3429 struct DwarfVirtualityField : public MDUnsignedField {
3430 DwarfVirtualityField() : MDUnsignedField(0, dwarf::DW_VIRTUALITY_max) {}
3433 struct DwarfLangField : public MDUnsignedField {
3434 DwarfLangField() : MDUnsignedField(0, dwarf::DW_LANG_hi_user) {}
3437 struct DwarfCCField : public MDUnsignedField {
3438 DwarfCCField() : MDUnsignedField(0, dwarf::DW_CC_hi_user) {}
3441 struct EmissionKindField : public MDUnsignedField {
3442 EmissionKindField() : MDUnsignedField(0, DICompileUnit::LastEmissionKind) {}
3445 struct DIFlagField : public MDFieldImpl<DINode::DIFlags> {
3446 DIFlagField() : MDFieldImpl(DINode::FlagZero) {}
3449 struct MDSignedField : public MDFieldImpl<int64_t> {
3453 MDSignedField(int64_t Default = 0)
3454 : ImplTy(Default), Min(INT64_MIN), Max(INT64_MAX) {}
3455 MDSignedField(int64_t Default, int64_t Min, int64_t Max)
3456 : ImplTy(Default), Min(Min), Max(Max) {}
3459 struct MDBoolField : public MDFieldImpl<bool> {
3460 MDBoolField(bool Default = false) : ImplTy(Default) {}
3463 struct MDField : public MDFieldImpl<Metadata *> {
3466 MDField(bool AllowNull = true) : ImplTy(nullptr), AllowNull(AllowNull) {}
3469 struct MDConstant : public MDFieldImpl<ConstantAsMetadata *> {
3470 MDConstant() : ImplTy(nullptr) {}
3473 struct MDStringField : public MDFieldImpl<MDString *> {
3475 MDStringField(bool AllowEmpty = true)
3476 : ImplTy(nullptr), AllowEmpty(AllowEmpty) {}
3479 struct MDFieldList : public MDFieldImpl<SmallVector<Metadata *, 4>> {
3480 MDFieldList() : ImplTy(SmallVector<Metadata *, 4>()) {}
3483 struct ChecksumKindField : public MDFieldImpl<DIFile::ChecksumKind> {
3484 ChecksumKindField() : ImplTy(DIFile::CSK_None) {}
3485 ChecksumKindField(DIFile::ChecksumKind CSKind) : ImplTy(CSKind) {}
3488 } // end anonymous namespace
3493 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3494 MDUnsignedField &Result) {
3495 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
3496 return TokError("expected unsigned integer");
3498 auto &U = Lex.getAPSIntVal();
3499 if (U.ugt(Result.Max))
3500 return TokError("value for '" + Name + "' too large, limit is " +
3502 Result.assign(U.getZExtValue());
3503 assert(Result.Val <= Result.Max && "Expected value in range");
3509 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, LineField &Result) {
3510 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3513 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, ColumnField &Result) {
3514 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3518 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfTagField &Result) {
3519 if (Lex.getKind() == lltok::APSInt)
3520 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3522 if (Lex.getKind() != lltok::DwarfTag)
3523 return TokError("expected DWARF tag");
3525 unsigned Tag = dwarf::getTag(Lex.getStrVal());
3526 if (Tag == dwarf::DW_TAG_invalid)
3527 return TokError("invalid DWARF tag" + Twine(" '") + Lex.getStrVal() + "'");
3528 assert(Tag <= Result.Max && "Expected valid DWARF tag");
3536 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3537 DwarfMacinfoTypeField &Result) {
3538 if (Lex.getKind() == lltok::APSInt)
3539 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3541 if (Lex.getKind() != lltok::DwarfMacinfo)
3542 return TokError("expected DWARF macinfo type");
3544 unsigned Macinfo = dwarf::getMacinfo(Lex.getStrVal());
3545 if (Macinfo == dwarf::DW_MACINFO_invalid)
3547 "invalid DWARF macinfo type" + Twine(" '") + Lex.getStrVal() + "'");
3548 assert(Macinfo <= Result.Max && "Expected valid DWARF macinfo type");
3550 Result.assign(Macinfo);
3556 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3557 DwarfVirtualityField &Result) {
3558 if (Lex.getKind() == lltok::APSInt)
3559 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3561 if (Lex.getKind() != lltok::DwarfVirtuality)
3562 return TokError("expected DWARF virtuality code");
3564 unsigned Virtuality = dwarf::getVirtuality(Lex.getStrVal());
3565 if (Virtuality == dwarf::DW_VIRTUALITY_invalid)
3566 return TokError("invalid DWARF virtuality code" + Twine(" '") +
3567 Lex.getStrVal() + "'");
3568 assert(Virtuality <= Result.Max && "Expected valid DWARF virtuality code");
3569 Result.assign(Virtuality);
3575 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfLangField &Result) {
3576 if (Lex.getKind() == lltok::APSInt)
3577 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3579 if (Lex.getKind() != lltok::DwarfLang)
3580 return TokError("expected DWARF language");
3582 unsigned Lang = dwarf::getLanguage(Lex.getStrVal());
3584 return TokError("invalid DWARF language" + Twine(" '") + Lex.getStrVal() +
3586 assert(Lang <= Result.Max && "Expected valid DWARF language");
3587 Result.assign(Lang);
3593 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfCCField &Result) {
3594 if (Lex.getKind() == lltok::APSInt)
3595 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3597 if (Lex.getKind() != lltok::DwarfCC)
3598 return TokError("expected DWARF calling convention");
3600 unsigned CC = dwarf::getCallingConvention(Lex.getStrVal());
3602 return TokError("invalid DWARF calling convention" + Twine(" '") + Lex.getStrVal() +
3604 assert(CC <= Result.Max && "Expected valid DWARF calling convention");
3611 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, EmissionKindField &Result) {
3612 if (Lex.getKind() == lltok::APSInt)
3613 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3615 if (Lex.getKind() != lltok::EmissionKind)
3616 return TokError("expected emission kind");
3618 auto Kind = DICompileUnit::getEmissionKind(Lex.getStrVal());
3620 return TokError("invalid emission kind" + Twine(" '") + Lex.getStrVal() +
3622 assert(*Kind <= Result.Max && "Expected valid emission kind");
3623 Result.assign(*Kind);
3629 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3630 DwarfAttEncodingField &Result) {
3631 if (Lex.getKind() == lltok::APSInt)
3632 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3634 if (Lex.getKind() != lltok::DwarfAttEncoding)
3635 return TokError("expected DWARF type attribute encoding");
3637 unsigned Encoding = dwarf::getAttributeEncoding(Lex.getStrVal());
3639 return TokError("invalid DWARF type attribute encoding" + Twine(" '") +
3640 Lex.getStrVal() + "'");
3641 assert(Encoding <= Result.Max && "Expected valid DWARF language");
3642 Result.assign(Encoding);
3649 /// ::= DIFlagVector
3650 /// ::= DIFlagVector '|' DIFlagFwdDecl '|' uint32 '|' DIFlagPublic
3652 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DIFlagField &Result) {
3654 // Parser for a single flag.
3655 auto parseFlag = [&](DINode::DIFlags &Val) {
3656 if (Lex.getKind() == lltok::APSInt && !Lex.getAPSIntVal().isSigned()) {
3657 uint32_t TempVal = static_cast<uint32_t>(Val);
3658 bool Res = ParseUInt32(TempVal);
3659 Val = static_cast<DINode::DIFlags>(TempVal);
3663 if (Lex.getKind() != lltok::DIFlag)
3664 return TokError("expected debug info flag");
3666 Val = DINode::getFlag(Lex.getStrVal());
3668 return TokError(Twine("invalid debug info flag flag '") +
3669 Lex.getStrVal() + "'");
3674 // Parse the flags and combine them together.
3675 DINode::DIFlags Combined = DINode::FlagZero;
3677 DINode::DIFlags Val;
3681 } while (EatIfPresent(lltok::bar));
3683 Result.assign(Combined);
3688 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3689 MDSignedField &Result) {
3690 if (Lex.getKind() != lltok::APSInt)
3691 return TokError("expected signed integer");
3693 auto &S = Lex.getAPSIntVal();
3695 return TokError("value for '" + Name + "' too small, limit is " +
3698 return TokError("value for '" + Name + "' too large, limit is " +
3700 Result.assign(S.getExtValue());
3701 assert(Result.Val >= Result.Min && "Expected value in range");
3702 assert(Result.Val <= Result.Max && "Expected value in range");
3708 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDBoolField &Result) {
3709 switch (Lex.getKind()) {
3711 return TokError("expected 'true' or 'false'");
3712 case lltok::kw_true:
3713 Result.assign(true);
3715 case lltok::kw_false:
3716 Result.assign(false);
3724 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDField &Result) {
3725 if (Lex.getKind() == lltok::kw_null) {
3726 if (!Result.AllowNull)
3727 return TokError("'" + Name + "' cannot be null");
3729 Result.assign(nullptr);
3734 if (ParseMetadata(MD, nullptr))
3742 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDStringField &Result) {
3743 LocTy ValueLoc = Lex.getLoc();
3745 if (ParseStringConstant(S))
3748 if (!Result.AllowEmpty && S.empty())
3749 return Error(ValueLoc, "'" + Name + "' cannot be empty");
3751 Result.assign(S.empty() ? nullptr : MDString::get(Context, S));
3756 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDFieldList &Result) {
3757 SmallVector<Metadata *, 4> MDs;
3758 if (ParseMDNodeVector(MDs))
3761 Result.assign(std::move(MDs));
3766 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3767 ChecksumKindField &Result) {
3768 if (Lex.getKind() != lltok::ChecksumKind)
3770 "invalid checksum kind" + Twine(" '") + Lex.getStrVal() + "'");
3772 DIFile::ChecksumKind CSKind = DIFile::getChecksumKind(Lex.getStrVal());
3774 Result.assign(CSKind);
3779 } // end namespace llvm
3781 template <class ParserTy>
3782 bool LLParser::ParseMDFieldsImplBody(ParserTy parseField) {
3784 if (Lex.getKind() != lltok::LabelStr)
3785 return TokError("expected field label here");
3789 } while (EatIfPresent(lltok::comma));
3794 template <class ParserTy>
3795 bool LLParser::ParseMDFieldsImpl(ParserTy parseField, LocTy &ClosingLoc) {
3796 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3799 if (ParseToken(lltok::lparen, "expected '(' here"))
3801 if (Lex.getKind() != lltok::rparen)
3802 if (ParseMDFieldsImplBody(parseField))
3805 ClosingLoc = Lex.getLoc();
3806 return ParseToken(lltok::rparen, "expected ')' here");
3809 template <class FieldTy>
3810 bool LLParser::ParseMDField(StringRef Name, FieldTy &Result) {
3812 return TokError("field '" + Name + "' cannot be specified more than once");
3814 LocTy Loc = Lex.getLoc();
3816 return ParseMDField(Loc, Name, Result);
3819 bool LLParser::ParseSpecializedMDNode(MDNode *&N, bool IsDistinct) {
3820 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3822 #define HANDLE_SPECIALIZED_MDNODE_LEAF(CLASS) \
3823 if (Lex.getStrVal() == #CLASS) \
3824 return Parse##CLASS(N, IsDistinct);
3825 #include "llvm/IR/Metadata.def"
3827 return TokError("expected metadata type");
3830 #define DECLARE_FIELD(NAME, TYPE, INIT) TYPE NAME INIT
3831 #define NOP_FIELD(NAME, TYPE, INIT)
3832 #define REQUIRE_FIELD(NAME, TYPE, INIT) \
3834 return Error(ClosingLoc, "missing required field '" #NAME "'");
3835 #define PARSE_MD_FIELD(NAME, TYPE, DEFAULT) \
3836 if (Lex.getStrVal() == #NAME) \
3837 return ParseMDField(#NAME, NAME);
3838 #define PARSE_MD_FIELDS() \
3839 VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) \
3842 if (ParseMDFieldsImpl([&]() -> bool { \
3843 VISIT_MD_FIELDS(PARSE_MD_FIELD, PARSE_MD_FIELD) \
3844 return TokError(Twine("invalid field '") + Lex.getStrVal() + "'"); \
3847 VISIT_MD_FIELDS(NOP_FIELD, REQUIRE_FIELD) \
3849 #define GET_OR_DISTINCT(CLASS, ARGS) \
3850 (IsDistinct ? CLASS::getDistinct ARGS : CLASS::get ARGS)
3852 /// ParseDILocationFields:
3853 /// ::= !DILocation(line: 43, column: 8, scope: !5, inlinedAt: !6)
3854 bool LLParser::ParseDILocation(MDNode *&Result, bool IsDistinct) {
3855 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3856 OPTIONAL(line, LineField, ); \
3857 OPTIONAL(column, ColumnField, ); \
3858 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3859 OPTIONAL(inlinedAt, MDField, );
3861 #undef VISIT_MD_FIELDS
3863 Result = GET_OR_DISTINCT(
3864 DILocation, (Context, line.Val, column.Val, scope.Val, inlinedAt.Val));
3868 /// ParseGenericDINode:
3869 /// ::= !GenericDINode(tag: 15, header: "...", operands: {...})
3870 bool LLParser::ParseGenericDINode(MDNode *&Result, bool IsDistinct) {
3871 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3872 REQUIRED(tag, DwarfTagField, ); \
3873 OPTIONAL(header, MDStringField, ); \
3874 OPTIONAL(operands, MDFieldList, );
3876 #undef VISIT_MD_FIELDS
3878 Result = GET_OR_DISTINCT(GenericDINode,
3879 (Context, tag.Val, header.Val, operands.Val));
3883 /// ParseDISubrange:
3884 /// ::= !DISubrange(count: 30, lowerBound: 2)
3885 bool LLParser::ParseDISubrange(MDNode *&Result, bool IsDistinct) {
3886 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3887 REQUIRED(count, MDSignedField, (-1, -1, INT64_MAX)); \
3888 OPTIONAL(lowerBound, MDSignedField, );
3890 #undef VISIT_MD_FIELDS
3892 Result = GET_OR_DISTINCT(DISubrange, (Context, count.Val, lowerBound.Val));
3896 /// ParseDIEnumerator:
3897 /// ::= !DIEnumerator(value: 30, name: "SomeKind")
3898 bool LLParser::ParseDIEnumerator(MDNode *&Result, bool IsDistinct) {
3899 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3900 REQUIRED(name, MDStringField, ); \
3901 REQUIRED(value, MDSignedField, );
3903 #undef VISIT_MD_FIELDS
3905 Result = GET_OR_DISTINCT(DIEnumerator, (Context, value.Val, name.Val));
3909 /// ParseDIBasicType:
3910 /// ::= !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32)
3911 bool LLParser::ParseDIBasicType(MDNode *&Result, bool IsDistinct) {
3912 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3913 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_base_type)); \
3914 OPTIONAL(name, MDStringField, ); \
3915 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3916 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX)); \
3917 OPTIONAL(encoding, DwarfAttEncodingField, );
3919 #undef VISIT_MD_FIELDS
3921 Result = GET_OR_DISTINCT(DIBasicType, (Context, tag.Val, name.Val, size.Val,
3922 align.Val, encoding.Val));
3926 /// ParseDIDerivedType:
3927 /// ::= !DIDerivedType(tag: DW_TAG_pointer_type, name: "int", file: !0,
3928 /// line: 7, scope: !1, baseType: !2, size: 32,
3929 /// align: 32, offset: 0, flags: 0, extraData: !3,
3930 /// dwarfAddressSpace: 3)
3931 bool LLParser::ParseDIDerivedType(MDNode *&Result, bool IsDistinct) {
3932 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3933 REQUIRED(tag, DwarfTagField, ); \
3934 OPTIONAL(name, MDStringField, ); \
3935 OPTIONAL(file, MDField, ); \
3936 OPTIONAL(line, LineField, ); \
3937 OPTIONAL(scope, MDField, ); \
3938 REQUIRED(baseType, MDField, ); \
3939 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3940 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX)); \
3941 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX)); \
3942 OPTIONAL(flags, DIFlagField, ); \
3943 OPTIONAL(extraData, MDField, ); \
3944 OPTIONAL(dwarfAddressSpace, MDUnsignedField, (UINT32_MAX, UINT32_MAX));
3946 #undef VISIT_MD_FIELDS
3948 Optional<unsigned> DWARFAddressSpace;
3949 if (dwarfAddressSpace.Val != UINT32_MAX)
3950 DWARFAddressSpace = dwarfAddressSpace.Val;
3952 Result = GET_OR_DISTINCT(DIDerivedType,
3953 (Context, tag.Val, name.Val, file.Val, line.Val,
3954 scope.Val, baseType.Val, size.Val, align.Val,
3955 offset.Val, DWARFAddressSpace, flags.Val,
3960 bool LLParser::ParseDICompositeType(MDNode *&Result, bool IsDistinct) {
3961 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3962 REQUIRED(tag, DwarfTagField, ); \
3963 OPTIONAL(name, MDStringField, ); \
3964 OPTIONAL(file, MDField, ); \
3965 OPTIONAL(line, LineField, ); \
3966 OPTIONAL(scope, MDField, ); \
3967 OPTIONAL(baseType, MDField, ); \
3968 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3969 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX)); \
3970 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX)); \
3971 OPTIONAL(flags, DIFlagField, ); \
3972 OPTIONAL(elements, MDField, ); \
3973 OPTIONAL(runtimeLang, DwarfLangField, ); \
3974 OPTIONAL(vtableHolder, MDField, ); \
3975 OPTIONAL(templateParams, MDField, ); \
3976 OPTIONAL(identifier, MDStringField, );
3978 #undef VISIT_MD_FIELDS
3980 // If this has an identifier try to build an ODR type.
3982 if (auto *CT = DICompositeType::buildODRType(
3983 Context, *identifier.Val, tag.Val, name.Val, file.Val, line.Val,
3984 scope.Val, baseType.Val, size.Val, align.Val, offset.Val, flags.Val,
3985 elements.Val, runtimeLang.Val, vtableHolder.Val,
3986 templateParams.Val)) {
3991 // Create a new node, and save it in the context if it belongs in the type
3993 Result = GET_OR_DISTINCT(
3995 (Context, tag.Val, name.Val, file.Val, line.Val, scope.Val, baseType.Val,
3996 size.Val, align.Val, offset.Val, flags.Val, elements.Val,
3997 runtimeLang.Val, vtableHolder.Val, templateParams.Val, identifier.Val));
4001 bool LLParser::ParseDISubroutineType(MDNode *&Result, bool IsDistinct) {
4002 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4003 OPTIONAL(flags, DIFlagField, ); \
4004 OPTIONAL(cc, DwarfCCField, ); \
4005 REQUIRED(types, MDField, );
4007 #undef VISIT_MD_FIELDS
4009 Result = GET_OR_DISTINCT(DISubroutineType,
4010 (Context, flags.Val, cc.Val, types.Val));
4014 /// ParseDIFileType:
4015 /// ::= !DIFileType(filename: "path/to/file", directory: "/path/to/dir"
4016 /// checksumkind: CSK_MD5,
4017 /// checksum: "000102030405060708090a0b0c0d0e0f")
4018 bool LLParser::ParseDIFile(MDNode *&Result, bool IsDistinct) {
4019 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4020 REQUIRED(filename, MDStringField, ); \
4021 REQUIRED(directory, MDStringField, ); \
4022 OPTIONAL(checksumkind, ChecksumKindField, ); \
4023 OPTIONAL(checksum, MDStringField, );
4025 #undef VISIT_MD_FIELDS
4027 Result = GET_OR_DISTINCT(DIFile, (Context, filename.Val, directory.Val,
4028 checksumkind.Val, checksum.Val));
4032 /// ParseDICompileUnit:
4033 /// ::= !DICompileUnit(language: DW_LANG_C99, file: !0, producer: "clang",
4034 /// isOptimized: true, flags: "-O2", runtimeVersion: 1,
4035 /// splitDebugFilename: "abc.debug",
4036 /// emissionKind: FullDebug, enums: !1, retainedTypes: !2,
4037 /// globals: !4, imports: !5, macros: !6, dwoId: 0x0abcd)
4038 bool LLParser::ParseDICompileUnit(MDNode *&Result, bool IsDistinct) {
4040 return Lex.Error("missing 'distinct', required for !DICompileUnit");
4042 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4043 REQUIRED(language, DwarfLangField, ); \
4044 REQUIRED(file, MDField, (/* AllowNull */ false)); \
4045 OPTIONAL(producer, MDStringField, ); \
4046 OPTIONAL(isOptimized, MDBoolField, ); \
4047 OPTIONAL(flags, MDStringField, ); \
4048 OPTIONAL(runtimeVersion, MDUnsignedField, (0, UINT32_MAX)); \
4049 OPTIONAL(splitDebugFilename, MDStringField, ); \
4050 OPTIONAL(emissionKind, EmissionKindField, ); \
4051 OPTIONAL(enums, MDField, ); \
4052 OPTIONAL(retainedTypes, MDField, ); \
4053 OPTIONAL(globals, MDField, ); \
4054 OPTIONAL(imports, MDField, ); \
4055 OPTIONAL(macros, MDField, ); \
4056 OPTIONAL(dwoId, MDUnsignedField, ); \
4057 OPTIONAL(splitDebugInlining, MDBoolField, = true); \
4058 OPTIONAL(debugInfoForProfiling, MDBoolField, = false);
4060 #undef VISIT_MD_FIELDS
4062 Result = DICompileUnit::getDistinct(
4063 Context, language.Val, file.Val, producer.Val, isOptimized.Val, flags.Val,
4064 runtimeVersion.Val, splitDebugFilename.Val, emissionKind.Val, enums.Val,
4065 retainedTypes.Val, globals.Val, imports.Val, macros.Val, dwoId.Val,
4066 splitDebugInlining.Val, debugInfoForProfiling.Val);
4070 /// ParseDISubprogram:
4071 /// ::= !DISubprogram(scope: !0, name: "foo", linkageName: "_Zfoo",
4072 /// file: !1, line: 7, type: !2, isLocal: false,
4073 /// isDefinition: true, scopeLine: 8, containingType: !3,
4074 /// virtuality: DW_VIRTUALTIY_pure_virtual,
4075 /// virtualIndex: 10, thisAdjustment: 4, flags: 11,
4076 /// isOptimized: false, templateParams: !4, declaration: !5,
4078 bool LLParser::ParseDISubprogram(MDNode *&Result, bool IsDistinct) {
4079 auto Loc = Lex.getLoc();
4080 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4081 OPTIONAL(scope, MDField, ); \
4082 OPTIONAL(name, MDStringField, ); \
4083 OPTIONAL(linkageName, MDStringField, ); \
4084 OPTIONAL(file, MDField, ); \
4085 OPTIONAL(line, LineField, ); \
4086 OPTIONAL(type, MDField, ); \
4087 OPTIONAL(isLocal, MDBoolField, ); \
4088 OPTIONAL(isDefinition, MDBoolField, (true)); \
4089 OPTIONAL(scopeLine, LineField, ); \
4090 OPTIONAL(containingType, MDField, ); \
4091 OPTIONAL(virtuality, DwarfVirtualityField, ); \
4092 OPTIONAL(virtualIndex, MDUnsignedField, (0, UINT32_MAX)); \
4093 OPTIONAL(thisAdjustment, MDSignedField, (0, INT32_MIN, INT32_MAX)); \
4094 OPTIONAL(flags, DIFlagField, ); \
4095 OPTIONAL(isOptimized, MDBoolField, ); \
4096 OPTIONAL(unit, MDField, ); \
4097 OPTIONAL(templateParams, MDField, ); \
4098 OPTIONAL(declaration, MDField, ); \
4099 OPTIONAL(variables, MDField, );
4101 #undef VISIT_MD_FIELDS
4103 if (isDefinition.Val && !IsDistinct)
4106 "missing 'distinct', required for !DISubprogram when 'isDefinition'");
4108 Result = GET_OR_DISTINCT(
4109 DISubprogram, (Context, scope.Val, name.Val, linkageName.Val, file.Val,
4110 line.Val, type.Val, isLocal.Val, isDefinition.Val,
4111 scopeLine.Val, containingType.Val, virtuality.Val,
4112 virtualIndex.Val, thisAdjustment.Val, flags.Val,
4113 isOptimized.Val, unit.Val, templateParams.Val,
4114 declaration.Val, variables.Val));
4118 /// ParseDILexicalBlock:
4119 /// ::= !DILexicalBlock(scope: !0, file: !2, line: 7, column: 9)
4120 bool LLParser::ParseDILexicalBlock(MDNode *&Result, bool IsDistinct) {
4121 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4122 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
4123 OPTIONAL(file, MDField, ); \
4124 OPTIONAL(line, LineField, ); \
4125 OPTIONAL(column, ColumnField, );
4127 #undef VISIT_MD_FIELDS
4129 Result = GET_OR_DISTINCT(
4130 DILexicalBlock, (Context, scope.Val, file.Val, line.Val, column.Val));
4134 /// ParseDILexicalBlockFile:
4135 /// ::= !DILexicalBlockFile(scope: !0, file: !2, discriminator: 9)
4136 bool LLParser::ParseDILexicalBlockFile(MDNode *&Result, bool IsDistinct) {
4137 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4138 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
4139 OPTIONAL(file, MDField, ); \
4140 REQUIRED(discriminator, MDUnsignedField, (0, UINT32_MAX));
4142 #undef VISIT_MD_FIELDS
4144 Result = GET_OR_DISTINCT(DILexicalBlockFile,
4145 (Context, scope.Val, file.Val, discriminator.Val));
4149 /// ParseDINamespace:
4150 /// ::= !DINamespace(scope: !0, file: !2, name: "SomeNamespace", line: 9)
4151 bool LLParser::ParseDINamespace(MDNode *&Result, bool IsDistinct) {
4152 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4153 REQUIRED(scope, MDField, ); \
4154 OPTIONAL(file, MDField, ); \
4155 OPTIONAL(name, MDStringField, ); \
4156 OPTIONAL(line, LineField, ); \
4157 OPTIONAL(exportSymbols, MDBoolField, );
4159 #undef VISIT_MD_FIELDS
4161 Result = GET_OR_DISTINCT(DINamespace,
4162 (Context, scope.Val, file.Val, name.Val, line.Val, exportSymbols.Val));
4167 /// ::= !DIMacro(macinfo: type, line: 9, name: "SomeMacro", value: "SomeValue")
4168 bool LLParser::ParseDIMacro(MDNode *&Result, bool IsDistinct) {
4169 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4170 REQUIRED(type, DwarfMacinfoTypeField, ); \
4171 OPTIONAL(line, LineField, ); \
4172 REQUIRED(name, MDStringField, ); \
4173 OPTIONAL(value, MDStringField, );
4175 #undef VISIT_MD_FIELDS
4177 Result = GET_OR_DISTINCT(DIMacro,
4178 (Context, type.Val, line.Val, name.Val, value.Val));
4182 /// ParseDIMacroFile:
4183 /// ::= !DIMacroFile(line: 9, file: !2, nodes: !3)
4184 bool LLParser::ParseDIMacroFile(MDNode *&Result, bool IsDistinct) {
4185 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4186 OPTIONAL(type, DwarfMacinfoTypeField, (dwarf::DW_MACINFO_start_file)); \
4187 OPTIONAL(line, LineField, ); \
4188 REQUIRED(file, MDField, ); \
4189 OPTIONAL(nodes, MDField, );
4191 #undef VISIT_MD_FIELDS
4193 Result = GET_OR_DISTINCT(DIMacroFile,
4194 (Context, type.Val, line.Val, file.Val, nodes.Val));
4199 /// ::= !DIModule(scope: !0, name: "SomeModule", configMacros: "-DNDEBUG",
4200 /// includePath: "/usr/include", isysroot: "/")
4201 bool LLParser::ParseDIModule(MDNode *&Result, bool IsDistinct) {
4202 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4203 REQUIRED(scope, MDField, ); \
4204 REQUIRED(name, MDStringField, ); \
4205 OPTIONAL(configMacros, MDStringField, ); \
4206 OPTIONAL(includePath, MDStringField, ); \
4207 OPTIONAL(isysroot, MDStringField, );
4209 #undef VISIT_MD_FIELDS
4211 Result = GET_OR_DISTINCT(DIModule, (Context, scope.Val, name.Val,
4212 configMacros.Val, includePath.Val, isysroot.Val));
4216 /// ParseDITemplateTypeParameter:
4217 /// ::= !DITemplateTypeParameter(name: "Ty", type: !1)
4218 bool LLParser::ParseDITemplateTypeParameter(MDNode *&Result, bool IsDistinct) {
4219 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4220 OPTIONAL(name, MDStringField, ); \
4221 REQUIRED(type, MDField, );
4223 #undef VISIT_MD_FIELDS
4226 GET_OR_DISTINCT(DITemplateTypeParameter, (Context, name.Val, type.Val));
4230 /// ParseDITemplateValueParameter:
4231 /// ::= !DITemplateValueParameter(tag: DW_TAG_template_value_parameter,
4232 /// name: "V", type: !1, value: i32 7)
4233 bool LLParser::ParseDITemplateValueParameter(MDNode *&Result, bool IsDistinct) {
4234 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4235 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_template_value_parameter)); \
4236 OPTIONAL(name, MDStringField, ); \
4237 OPTIONAL(type, MDField, ); \
4238 REQUIRED(value, MDField, );
4240 #undef VISIT_MD_FIELDS
4242 Result = GET_OR_DISTINCT(DITemplateValueParameter,
4243 (Context, tag.Val, name.Val, type.Val, value.Val));
4247 /// ParseDIGlobalVariable:
4248 /// ::= !DIGlobalVariable(scope: !0, name: "foo", linkageName: "foo",
4249 /// file: !1, line: 7, type: !2, isLocal: false,
4250 /// isDefinition: true, declaration: !3, align: 8)
4251 bool LLParser::ParseDIGlobalVariable(MDNode *&Result, bool IsDistinct) {
4252 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4253 REQUIRED(name, MDStringField, (/* AllowEmpty */ false)); \
4254 OPTIONAL(scope, MDField, ); \
4255 OPTIONAL(linkageName, MDStringField, ); \
4256 OPTIONAL(file, MDField, ); \
4257 OPTIONAL(line, LineField, ); \
4258 OPTIONAL(type, MDField, ); \
4259 OPTIONAL(isLocal, MDBoolField, ); \
4260 OPTIONAL(isDefinition, MDBoolField, (true)); \
4261 OPTIONAL(declaration, MDField, ); \
4262 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX));
4264 #undef VISIT_MD_FIELDS
4266 Result = GET_OR_DISTINCT(DIGlobalVariable,
4267 (Context, scope.Val, name.Val, linkageName.Val,
4268 file.Val, line.Val, type.Val, isLocal.Val,
4269 isDefinition.Val, declaration.Val, align.Val));
4273 /// ParseDILocalVariable:
4274 /// ::= !DILocalVariable(arg: 7, scope: !0, name: "foo",
4275 /// file: !1, line: 7, type: !2, arg: 2, flags: 7,
4277 /// ::= !DILocalVariable(scope: !0, name: "foo",
4278 /// file: !1, line: 7, type: !2, arg: 2, flags: 7,
4280 bool LLParser::ParseDILocalVariable(MDNode *&Result, bool IsDistinct) {
4281 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4282 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
4283 OPTIONAL(name, MDStringField, ); \
4284 OPTIONAL(arg, MDUnsignedField, (0, UINT16_MAX)); \
4285 OPTIONAL(file, MDField, ); \
4286 OPTIONAL(line, LineField, ); \
4287 OPTIONAL(type, MDField, ); \
4288 OPTIONAL(flags, DIFlagField, ); \
4289 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX));
4291 #undef VISIT_MD_FIELDS
4293 Result = GET_OR_DISTINCT(DILocalVariable,
4294 (Context, scope.Val, name.Val, file.Val, line.Val,
4295 type.Val, arg.Val, flags.Val, align.Val));
4299 /// ParseDIExpression:
4300 /// ::= !DIExpression(0, 7, -1)
4301 bool LLParser::ParseDIExpression(MDNode *&Result, bool IsDistinct) {
4302 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
4305 if (ParseToken(lltok::lparen, "expected '(' here"))
4308 SmallVector<uint64_t, 8> Elements;
4309 if (Lex.getKind() != lltok::rparen)
4311 if (Lex.getKind() == lltok::DwarfOp) {
4312 if (unsigned Op = dwarf::getOperationEncoding(Lex.getStrVal())) {
4314 Elements.push_back(Op);
4317 return TokError(Twine("invalid DWARF op '") + Lex.getStrVal() + "'");
4320 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
4321 return TokError("expected unsigned integer");
4323 auto &U = Lex.getAPSIntVal();
4324 if (U.ugt(UINT64_MAX))
4325 return TokError("element too large, limit is " + Twine(UINT64_MAX));
4326 Elements.push_back(U.getZExtValue());
4328 } while (EatIfPresent(lltok::comma));
4330 if (ParseToken(lltok::rparen, "expected ')' here"))
4333 Result = GET_OR_DISTINCT(DIExpression, (Context, Elements));
4337 /// ParseDIGlobalVariableExpression:
4338 /// ::= !DIGlobalVariableExpression(var: !0, expr: !1)
4339 bool LLParser::ParseDIGlobalVariableExpression(MDNode *&Result,
4341 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4342 REQUIRED(var, MDField, ); \
4343 OPTIONAL(expr, MDField, );
4345 #undef VISIT_MD_FIELDS
4348 GET_OR_DISTINCT(DIGlobalVariableExpression, (Context, var.Val, expr.Val));
4352 /// ParseDIObjCProperty:
4353 /// ::= !DIObjCProperty(name: "foo", file: !1, line: 7, setter: "setFoo",
4354 /// getter: "getFoo", attributes: 7, type: !2)
4355 bool LLParser::ParseDIObjCProperty(MDNode *&Result, bool IsDistinct) {
4356 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4357 OPTIONAL(name, MDStringField, ); \
4358 OPTIONAL(file, MDField, ); \
4359 OPTIONAL(line, LineField, ); \
4360 OPTIONAL(setter, MDStringField, ); \
4361 OPTIONAL(getter, MDStringField, ); \
4362 OPTIONAL(attributes, MDUnsignedField, (0, UINT32_MAX)); \
4363 OPTIONAL(type, MDField, );
4365 #undef VISIT_MD_FIELDS
4367 Result = GET_OR_DISTINCT(DIObjCProperty,
4368 (Context, name.Val, file.Val, line.Val, setter.Val,
4369 getter.Val, attributes.Val, type.Val));
4373 /// ParseDIImportedEntity:
4374 /// ::= !DIImportedEntity(tag: DW_TAG_imported_module, scope: !0, entity: !1,
4375 /// line: 7, name: "foo")
4376 bool LLParser::ParseDIImportedEntity(MDNode *&Result, bool IsDistinct) {
4377 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4378 REQUIRED(tag, DwarfTagField, ); \
4379 REQUIRED(scope, MDField, ); \
4380 OPTIONAL(entity, MDField, ); \
4381 OPTIONAL(line, LineField, ); \
4382 OPTIONAL(name, MDStringField, );
4384 #undef VISIT_MD_FIELDS
4386 Result = GET_OR_DISTINCT(DIImportedEntity, (Context, tag.Val, scope.Val,
4387 entity.Val, line.Val, name.Val));
4391 #undef PARSE_MD_FIELD
4393 #undef REQUIRE_FIELD
4394 #undef DECLARE_FIELD
4396 /// ParseMetadataAsValue
4397 /// ::= metadata i32 %local
4398 /// ::= metadata i32 @global
4399 /// ::= metadata i32 7
4401 /// ::= metadata !{...}
4402 /// ::= metadata !"string"
4403 bool LLParser::ParseMetadataAsValue(Value *&V, PerFunctionState &PFS) {
4404 // Note: the type 'metadata' has already been parsed.
4406 if (ParseMetadata(MD, &PFS))
4409 V = MetadataAsValue::get(Context, MD);
4413 /// ParseValueAsMetadata
4417 bool LLParser::ParseValueAsMetadata(Metadata *&MD, const Twine &TypeMsg,
4418 PerFunctionState *PFS) {
4421 if (ParseType(Ty, TypeMsg, Loc))
4423 if (Ty->isMetadataTy())
4424 return Error(Loc, "invalid metadata-value-metadata roundtrip");
4427 if (ParseValue(Ty, V, PFS))
4430 MD = ValueAsMetadata::get(V);
4441 /// ::= !DILocation(...)
4442 bool LLParser::ParseMetadata(Metadata *&MD, PerFunctionState *PFS) {
4443 if (Lex.getKind() == lltok::MetadataVar) {
4445 if (ParseSpecializedMDNode(N))
4453 if (Lex.getKind() != lltok::exclaim)
4454 return ParseValueAsMetadata(MD, "expected metadata operand", PFS);
4457 assert(Lex.getKind() == lltok::exclaim && "Expected '!' here");
4461 // ::= '!' STRINGCONSTANT
4462 if (Lex.getKind() == lltok::StringConstant) {
4464 if (ParseMDString(S))
4474 if (ParseMDNodeTail(N))
4480 //===----------------------------------------------------------------------===//
4481 // Function Parsing.
4482 //===----------------------------------------------------------------------===//
4484 bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
4485 PerFunctionState *PFS) {
4486 if (Ty->isFunctionTy())
4487 return Error(ID.Loc, "functions are not values, refer to them as pointers");
4490 case ValID::t_LocalID:
4491 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
4492 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
4493 return V == nullptr;
4494 case ValID::t_LocalName:
4495 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
4496 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
4497 return V == nullptr;
4498 case ValID::t_InlineAsm: {
4499 if (!ID.FTy || !InlineAsm::Verify(ID.FTy, ID.StrVal2))
4500 return Error(ID.Loc, "invalid type for inline asm constraint string");
4501 V = InlineAsm::get(ID.FTy, ID.StrVal, ID.StrVal2, ID.UIntVal & 1,
4502 (ID.UIntVal >> 1) & 1,
4503 (InlineAsm::AsmDialect(ID.UIntVal >> 2)));
4506 case ValID::t_GlobalName:
4507 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
4508 return V == nullptr;
4509 case ValID::t_GlobalID:
4510 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
4511 return V == nullptr;
4512 case ValID::t_APSInt:
4513 if (!Ty->isIntegerTy())
4514 return Error(ID.Loc, "integer constant must have integer type");
4515 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
4516 V = ConstantInt::get(Context, ID.APSIntVal);
4518 case ValID::t_APFloat:
4519 if (!Ty->isFloatingPointTy() ||
4520 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
4521 return Error(ID.Loc, "floating point constant invalid for type");
4523 // The lexer has no type info, so builds all half, float, and double FP
4524 // constants as double. Fix this here. Long double does not need this.
4525 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble()) {
4528 ID.APFloatVal.convert(APFloat::IEEEhalf(), APFloat::rmNearestTiesToEven,
4530 else if (Ty->isFloatTy())
4531 ID.APFloatVal.convert(APFloat::IEEEsingle(), APFloat::rmNearestTiesToEven,
4534 V = ConstantFP::get(Context, ID.APFloatVal);
4536 if (V->getType() != Ty)
4537 return Error(ID.Loc, "floating point constant does not have type '" +
4538 getTypeString(Ty) + "'");
4542 if (!Ty->isPointerTy())
4543 return Error(ID.Loc, "null must be a pointer type");
4544 V = ConstantPointerNull::get(cast<PointerType>(Ty));
4546 case ValID::t_Undef:
4547 // FIXME: LabelTy should not be a first-class type.
4548 if (!Ty->isFirstClassType() || Ty->isLabelTy())
4549 return Error(ID.Loc, "invalid type for undef constant");
4550 V = UndefValue::get(Ty);
4552 case ValID::t_EmptyArray:
4553 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
4554 return Error(ID.Loc, "invalid empty array initializer");
4555 V = UndefValue::get(Ty);
4558 // FIXME: LabelTy should not be a first-class type.
4559 if (!Ty->isFirstClassType() || Ty->isLabelTy())
4560 return Error(ID.Loc, "invalid type for null constant");
4561 V = Constant::getNullValue(Ty);
4564 if (!Ty->isTokenTy())
4565 return Error(ID.Loc, "invalid type for none constant");
4566 V = Constant::getNullValue(Ty);
4568 case ValID::t_Constant:
4569 if (ID.ConstantVal->getType() != Ty)
4570 return Error(ID.Loc, "constant expression type mismatch");
4574 case ValID::t_ConstantStruct:
4575 case ValID::t_PackedConstantStruct:
4576 if (StructType *ST = dyn_cast<StructType>(Ty)) {
4577 if (ST->getNumElements() != ID.UIntVal)
4578 return Error(ID.Loc,
4579 "initializer with struct type has wrong # elements");
4580 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
4581 return Error(ID.Loc, "packed'ness of initializer and type don't match");
4583 // Verify that the elements are compatible with the structtype.
4584 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
4585 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
4586 return Error(ID.Loc, "element " + Twine(i) +
4587 " of struct initializer doesn't match struct element type");
4589 V = ConstantStruct::get(
4590 ST, makeArrayRef(ID.ConstantStructElts.get(), ID.UIntVal));
4592 return Error(ID.Loc, "constant expression type mismatch");
4595 llvm_unreachable("Invalid ValID");
4598 bool LLParser::parseConstantValue(Type *Ty, Constant *&C) {
4601 auto Loc = Lex.getLoc();
4602 if (ParseValID(ID, /*PFS=*/nullptr))
4605 case ValID::t_APSInt:
4606 case ValID::t_APFloat:
4607 case ValID::t_Undef:
4608 case ValID::t_Constant:
4609 case ValID::t_ConstantStruct:
4610 case ValID::t_PackedConstantStruct: {
4612 if (ConvertValIDToValue(Ty, ID, V, /*PFS=*/nullptr))
4614 assert(isa<Constant>(V) && "Expected a constant value");
4615 C = cast<Constant>(V);
4619 C = Constant::getNullValue(Ty);
4622 return Error(Loc, "expected a constant value");
4626 bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS) {
4629 return ParseValID(ID, PFS) || ConvertValIDToValue(Ty, ID, V, PFS);
4632 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
4634 return ParseType(Ty) ||
4635 ParseValue(Ty, V, PFS);
4638 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
4639 PerFunctionState &PFS) {
4642 if (ParseTypeAndValue(V, PFS)) return true;
4643 if (!isa<BasicBlock>(V))
4644 return Error(Loc, "expected a basic block");
4645 BB = cast<BasicBlock>(V);
4650 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
4651 /// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
4652 /// OptionalAlign OptGC OptionalPrefix OptionalPrologue OptPersonalityFn
4653 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
4654 // Parse the linkage.
4655 LocTy LinkageLoc = Lex.getLoc();
4658 unsigned Visibility;
4659 unsigned DLLStorageClass;
4660 AttrBuilder RetAttrs;
4663 Type *RetType = nullptr;
4664 LocTy RetTypeLoc = Lex.getLoc();
4665 if (ParseOptionalLinkage(Linkage, HasLinkage, Visibility, DLLStorageClass) ||
4666 ParseOptionalCallingConv(CC) || ParseOptionalReturnAttrs(RetAttrs) ||
4667 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
4670 // Verify that the linkage is ok.
4671 switch ((GlobalValue::LinkageTypes)Linkage) {
4672 case GlobalValue::ExternalLinkage:
4673 break; // always ok.
4674 case GlobalValue::ExternalWeakLinkage:
4676 return Error(LinkageLoc, "invalid linkage for function definition");
4678 case GlobalValue::PrivateLinkage:
4679 case GlobalValue::InternalLinkage:
4680 case GlobalValue::AvailableExternallyLinkage:
4681 case GlobalValue::LinkOnceAnyLinkage:
4682 case GlobalValue::LinkOnceODRLinkage:
4683 case GlobalValue::WeakAnyLinkage:
4684 case GlobalValue::WeakODRLinkage:
4686 return Error(LinkageLoc, "invalid linkage for function declaration");
4688 case GlobalValue::AppendingLinkage:
4689 case GlobalValue::CommonLinkage:
4690 return Error(LinkageLoc, "invalid function linkage type");
4693 if (!isValidVisibilityForLinkage(Visibility, Linkage))
4694 return Error(LinkageLoc,
4695 "symbol with local linkage must have default visibility");
4697 if (!FunctionType::isValidReturnType(RetType))
4698 return Error(RetTypeLoc, "invalid function return type");
4700 LocTy NameLoc = Lex.getLoc();
4702 std::string FunctionName;
4703 if (Lex.getKind() == lltok::GlobalVar) {
4704 FunctionName = Lex.getStrVal();
4705 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
4706 unsigned NameID = Lex.getUIntVal();
4708 if (NameID != NumberedVals.size())
4709 return TokError("function expected to be numbered '%" +
4710 Twine(NumberedVals.size()) + "'");
4712 return TokError("expected function name");
4717 if (Lex.getKind() != lltok::lparen)
4718 return TokError("expected '(' in function argument list");
4720 SmallVector<ArgInfo, 8> ArgList;
4722 AttrBuilder FuncAttrs;
4723 std::vector<unsigned> FwdRefAttrGrps;
4725 std::string Section;
4728 GlobalValue::UnnamedAddr UnnamedAddr = GlobalValue::UnnamedAddr::None;
4729 LocTy UnnamedAddrLoc;
4730 Constant *Prefix = nullptr;
4731 Constant *Prologue = nullptr;
4732 Constant *PersonalityFn = nullptr;
4735 if (ParseArgumentList(ArgList, isVarArg) ||
4736 ParseOptionalUnnamedAddr(UnnamedAddr) ||
4737 ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false,
4739 (EatIfPresent(lltok::kw_section) &&
4740 ParseStringConstant(Section)) ||
4741 parseOptionalComdat(FunctionName, C) ||
4742 ParseOptionalAlignment(Alignment) ||
4743 (EatIfPresent(lltok::kw_gc) &&
4744 ParseStringConstant(GC)) ||
4745 (EatIfPresent(lltok::kw_prefix) &&
4746 ParseGlobalTypeAndValue(Prefix)) ||
4747 (EatIfPresent(lltok::kw_prologue) &&
4748 ParseGlobalTypeAndValue(Prologue)) ||
4749 (EatIfPresent(lltok::kw_personality) &&
4750 ParseGlobalTypeAndValue(PersonalityFn)))
4753 if (FuncAttrs.contains(Attribute::Builtin))
4754 return Error(BuiltinLoc, "'builtin' attribute not valid on function");
4756 // If the alignment was parsed as an attribute, move to the alignment field.
4757 if (FuncAttrs.hasAlignmentAttr()) {
4758 Alignment = FuncAttrs.getAlignment();
4759 FuncAttrs.removeAttribute(Attribute::Alignment);
4762 // Okay, if we got here, the function is syntactically valid. Convert types
4763 // and do semantic checks.
4764 std::vector<Type*> ParamTypeList;
4765 SmallVector<AttributeSet, 8> Attrs;
4767 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
4768 ParamTypeList.push_back(ArgList[i].Ty);
4769 Attrs.push_back(ArgList[i].Attrs);
4773 AttributeList::get(Context, AttributeSet::get(Context, FuncAttrs),
4774 AttributeSet::get(Context, RetAttrs), Attrs);
4776 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
4777 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
4780 FunctionType::get(RetType, ParamTypeList, isVarArg);
4781 PointerType *PFT = PointerType::getUnqual(FT);
4784 if (!FunctionName.empty()) {
4785 // If this was a definition of a forward reference, remove the definition
4786 // from the forward reference table and fill in the forward ref.
4787 auto FRVI = ForwardRefVals.find(FunctionName);
4788 if (FRVI != ForwardRefVals.end()) {
4789 Fn = M->getFunction(FunctionName);
4791 return Error(FRVI->second.second, "invalid forward reference to "
4792 "function as global value!");
4793 if (Fn->getType() != PFT)
4794 return Error(FRVI->second.second, "invalid forward reference to "
4795 "function '" + FunctionName + "' with wrong type!");
4797 ForwardRefVals.erase(FRVI);
4798 } else if ((Fn = M->getFunction(FunctionName))) {
4799 // Reject redefinitions.
4800 return Error(NameLoc, "invalid redefinition of function '" +
4801 FunctionName + "'");
4802 } else if (M->getNamedValue(FunctionName)) {
4803 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
4807 // If this is a definition of a forward referenced function, make sure the
4809 auto I = ForwardRefValIDs.find(NumberedVals.size());
4810 if (I != ForwardRefValIDs.end()) {
4811 Fn = cast<Function>(I->second.first);
4812 if (Fn->getType() != PFT)
4813 return Error(NameLoc, "type of definition and forward reference of '@" +
4814 Twine(NumberedVals.size()) + "' disagree");
4815 ForwardRefValIDs.erase(I);
4820 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
4821 else // Move the forward-reference to the correct spot in the module.
4822 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
4824 if (FunctionName.empty())
4825 NumberedVals.push_back(Fn);
4827 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
4828 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
4829 Fn->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
4830 Fn->setCallingConv(CC);
4831 Fn->setAttributes(PAL);
4832 Fn->setUnnamedAddr(UnnamedAddr);
4833 Fn->setAlignment(Alignment);
4834 Fn->setSection(Section);
4836 Fn->setPersonalityFn(PersonalityFn);
4837 if (!GC.empty()) Fn->setGC(GC);
4838 Fn->setPrefixData(Prefix);
4839 Fn->setPrologueData(Prologue);
4840 ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
4842 // Add all of the arguments we parsed to the function.
4843 Function::arg_iterator ArgIt = Fn->arg_begin();
4844 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
4845 // If the argument has a name, insert it into the argument symbol table.
4846 if (ArgList[i].Name.empty()) continue;
4848 // Set the name, if it conflicted, it will be auto-renamed.
4849 ArgIt->setName(ArgList[i].Name);
4851 if (ArgIt->getName() != ArgList[i].Name)
4852 return Error(ArgList[i].Loc, "redefinition of argument '%" +
4853 ArgList[i].Name + "'");
4859 // Check the declaration has no block address forward references.
4861 if (FunctionName.empty()) {
4862 ID.Kind = ValID::t_GlobalID;
4863 ID.UIntVal = NumberedVals.size() - 1;
4865 ID.Kind = ValID::t_GlobalName;
4866 ID.StrVal = FunctionName;
4868 auto Blocks = ForwardRefBlockAddresses.find(ID);
4869 if (Blocks != ForwardRefBlockAddresses.end())
4870 return Error(Blocks->first.Loc,
4871 "cannot take blockaddress inside a declaration");
4875 bool LLParser::PerFunctionState::resolveForwardRefBlockAddresses() {
4877 if (FunctionNumber == -1) {
4878 ID.Kind = ValID::t_GlobalName;
4879 ID.StrVal = F.getName();
4881 ID.Kind = ValID::t_GlobalID;
4882 ID.UIntVal = FunctionNumber;
4885 auto Blocks = P.ForwardRefBlockAddresses.find(ID);
4886 if (Blocks == P.ForwardRefBlockAddresses.end())
4889 for (const auto &I : Blocks->second) {
4890 const ValID &BBID = I.first;
4891 GlobalValue *GV = I.second;
4893 assert((BBID.Kind == ValID::t_LocalID || BBID.Kind == ValID::t_LocalName) &&
4894 "Expected local id or name");
4896 if (BBID.Kind == ValID::t_LocalName)
4897 BB = GetBB(BBID.StrVal, BBID.Loc);
4899 BB = GetBB(BBID.UIntVal, BBID.Loc);
4901 return P.Error(BBID.Loc, "referenced value is not a basic block");
4903 GV->replaceAllUsesWith(BlockAddress::get(&F, BB));
4904 GV->eraseFromParent();
4907 P.ForwardRefBlockAddresses.erase(Blocks);
4911 /// ParseFunctionBody
4912 /// ::= '{' BasicBlock+ UseListOrderDirective* '}'
4913 bool LLParser::ParseFunctionBody(Function &Fn) {
4914 if (Lex.getKind() != lltok::lbrace)
4915 return TokError("expected '{' in function body");
4916 Lex.Lex(); // eat the {.
4918 int FunctionNumber = -1;
4919 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
4921 PerFunctionState PFS(*this, Fn, FunctionNumber);
4923 // Resolve block addresses and allow basic blocks to be forward-declared
4924 // within this function.
4925 if (PFS.resolveForwardRefBlockAddresses())
4927 SaveAndRestore<PerFunctionState *> ScopeExit(BlockAddressPFS, &PFS);
4929 // We need at least one basic block.
4930 if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_uselistorder)
4931 return TokError("function body requires at least one basic block");
4933 while (Lex.getKind() != lltok::rbrace &&
4934 Lex.getKind() != lltok::kw_uselistorder)
4935 if (ParseBasicBlock(PFS)) return true;
4937 while (Lex.getKind() != lltok::rbrace)
4938 if (ParseUseListOrder(&PFS))
4944 // Verify function is ok.
4945 return PFS.FinishFunction();
4949 /// ::= LabelStr? Instruction*
4950 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
4951 // If this basic block starts out with a name, remember it.
4953 LocTy NameLoc = Lex.getLoc();
4954 if (Lex.getKind() == lltok::LabelStr) {
4955 Name = Lex.getStrVal();
4959 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
4961 return Error(NameLoc,
4962 "unable to create block named '" + Name + "'");
4964 std::string NameStr;
4966 // Parse the instructions in this block until we get a terminator.
4969 // This instruction may have three possibilities for a name: a) none
4970 // specified, b) name specified "%foo =", c) number specified: "%4 =".
4971 LocTy NameLoc = Lex.getLoc();
4975 if (Lex.getKind() == lltok::LocalVarID) {
4976 NameID = Lex.getUIntVal();
4978 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
4980 } else if (Lex.getKind() == lltok::LocalVar) {
4981 NameStr = Lex.getStrVal();
4983 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
4987 switch (ParseInstruction(Inst, BB, PFS)) {
4988 default: llvm_unreachable("Unknown ParseInstruction result!");
4989 case InstError: return true;
4991 BB->getInstList().push_back(Inst);
4993 // With a normal result, we check to see if the instruction is followed by
4994 // a comma and metadata.
4995 if (EatIfPresent(lltok::comma))
4996 if (ParseInstructionMetadata(*Inst))
4999 case InstExtraComma:
5000 BB->getInstList().push_back(Inst);
5002 // If the instruction parser ate an extra comma at the end of it, it
5003 // *must* be followed by metadata.
5004 if (ParseInstructionMetadata(*Inst))
5009 // Set the name on the instruction.
5010 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
5011 } while (!isa<TerminatorInst>(Inst));
5016 //===----------------------------------------------------------------------===//
5017 // Instruction Parsing.
5018 //===----------------------------------------------------------------------===//
5020 /// ParseInstruction - Parse one of the many different instructions.
5022 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
5023 PerFunctionState &PFS) {
5024 lltok::Kind Token = Lex.getKind();
5025 if (Token == lltok::Eof)
5026 return TokError("found end of file when expecting more instructions");
5027 LocTy Loc = Lex.getLoc();
5028 unsigned KeywordVal = Lex.getUIntVal();
5029 Lex.Lex(); // Eat the keyword.
5032 default: return Error(Loc, "expected instruction opcode");
5033 // Terminator Instructions.
5034 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
5035 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
5036 case lltok::kw_br: return ParseBr(Inst, PFS);
5037 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
5038 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
5039 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
5040 case lltok::kw_resume: return ParseResume(Inst, PFS);
5041 case lltok::kw_cleanupret: return ParseCleanupRet(Inst, PFS);
5042 case lltok::kw_catchret: return ParseCatchRet(Inst, PFS);
5043 case lltok::kw_catchswitch: return ParseCatchSwitch(Inst, PFS);
5044 case lltok::kw_catchpad: return ParseCatchPad(Inst, PFS);
5045 case lltok::kw_cleanuppad: return ParseCleanupPad(Inst, PFS);
5046 // Binary Operators.
5050 case lltok::kw_shl: {
5051 bool NUW = EatIfPresent(lltok::kw_nuw);
5052 bool NSW = EatIfPresent(lltok::kw_nsw);
5053 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
5055 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
5057 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
5058 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
5061 case lltok::kw_fadd:
5062 case lltok::kw_fsub:
5063 case lltok::kw_fmul:
5064 case lltok::kw_fdiv:
5065 case lltok::kw_frem: {
5066 FastMathFlags FMF = EatFastMathFlagsIfPresent();
5067 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
5071 Inst->setFastMathFlags(FMF);
5075 case lltok::kw_sdiv:
5076 case lltok::kw_udiv:
5077 case lltok::kw_lshr:
5078 case lltok::kw_ashr: {
5079 bool Exact = EatIfPresent(lltok::kw_exact);
5081 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
5082 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
5086 case lltok::kw_urem:
5087 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
5090 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
5091 case lltok::kw_icmp: return ParseCompare(Inst, PFS, KeywordVal);
5092 case lltok::kw_fcmp: {
5093 FastMathFlags FMF = EatFastMathFlagsIfPresent();
5094 int Res = ParseCompare(Inst, PFS, KeywordVal);
5098 Inst->setFastMathFlags(FMF);
5103 case lltok::kw_trunc:
5104 case lltok::kw_zext:
5105 case lltok::kw_sext:
5106 case lltok::kw_fptrunc:
5107 case lltok::kw_fpext:
5108 case lltok::kw_bitcast:
5109 case lltok::kw_addrspacecast:
5110 case lltok::kw_uitofp:
5111 case lltok::kw_sitofp:
5112 case lltok::kw_fptoui:
5113 case lltok::kw_fptosi:
5114 case lltok::kw_inttoptr:
5115 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
5117 case lltok::kw_select: return ParseSelect(Inst, PFS);
5118 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
5119 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
5120 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
5121 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
5122 case lltok::kw_phi: return ParsePHI(Inst, PFS);
5123 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
5125 case lltok::kw_call: return ParseCall(Inst, PFS, CallInst::TCK_None);
5126 case lltok::kw_tail: return ParseCall(Inst, PFS, CallInst::TCK_Tail);
5127 case lltok::kw_musttail: return ParseCall(Inst, PFS, CallInst::TCK_MustTail);
5128 case lltok::kw_notail: return ParseCall(Inst, PFS, CallInst::TCK_NoTail);
5130 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
5131 case lltok::kw_load: return ParseLoad(Inst, PFS);
5132 case lltok::kw_store: return ParseStore(Inst, PFS);
5133 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
5134 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
5135 case lltok::kw_fence: return ParseFence(Inst, PFS);
5136 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
5137 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
5138 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
5142 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
5143 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
5144 if (Opc == Instruction::FCmp) {
5145 switch (Lex.getKind()) {
5146 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
5147 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
5148 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
5149 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
5150 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
5151 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
5152 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
5153 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
5154 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
5155 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
5156 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
5157 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
5158 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
5159 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
5160 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
5161 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
5162 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
5165 switch (Lex.getKind()) {
5166 default: return TokError("expected icmp predicate (e.g. 'eq')");
5167 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
5168 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
5169 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
5170 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
5171 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
5172 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
5173 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
5174 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
5175 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
5176 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
5183 //===----------------------------------------------------------------------===//
5184 // Terminator Instructions.
5185 //===----------------------------------------------------------------------===//
5187 /// ParseRet - Parse a return instruction.
5188 /// ::= 'ret' void (',' !dbg, !1)*
5189 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
5190 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
5191 PerFunctionState &PFS) {
5192 SMLoc TypeLoc = Lex.getLoc();
5194 if (ParseType(Ty, true /*void allowed*/)) return true;
5196 Type *ResType = PFS.getFunction().getReturnType();
5198 if (Ty->isVoidTy()) {
5199 if (!ResType->isVoidTy())
5200 return Error(TypeLoc, "value doesn't match function result type '" +
5201 getTypeString(ResType) + "'");
5203 Inst = ReturnInst::Create(Context);
5208 if (ParseValue(Ty, RV, PFS)) return true;
5210 if (ResType != RV->getType())
5211 return Error(TypeLoc, "value doesn't match function result type '" +
5212 getTypeString(ResType) + "'");
5214 Inst = ReturnInst::Create(Context, RV);
5219 /// ::= 'br' TypeAndValue
5220 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5221 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
5224 BasicBlock *Op1, *Op2;
5225 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
5227 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
5228 Inst = BranchInst::Create(BB);
5232 if (Op0->getType() != Type::getInt1Ty(Context))
5233 return Error(Loc, "branch condition must have 'i1' type");
5235 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
5236 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
5237 ParseToken(lltok::comma, "expected ',' after true destination") ||
5238 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
5241 Inst = BranchInst::Create(Op1, Op2, Op0);
5247 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
5249 /// ::= (TypeAndValue ',' TypeAndValue)*
5250 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
5251 LocTy CondLoc, BBLoc;
5253 BasicBlock *DefaultBB;
5254 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
5255 ParseToken(lltok::comma, "expected ',' after switch condition") ||
5256 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
5257 ParseToken(lltok::lsquare, "expected '[' with switch table"))
5260 if (!Cond->getType()->isIntegerTy())
5261 return Error(CondLoc, "switch condition must have integer type");
5263 // Parse the jump table pairs.
5264 SmallPtrSet<Value*, 32> SeenCases;
5265 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
5266 while (Lex.getKind() != lltok::rsquare) {
5270 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
5271 ParseToken(lltok::comma, "expected ',' after case value") ||
5272 ParseTypeAndBasicBlock(DestBB, PFS))
5275 if (!SeenCases.insert(Constant).second)
5276 return Error(CondLoc, "duplicate case value in switch");
5277 if (!isa<ConstantInt>(Constant))
5278 return Error(CondLoc, "case value is not a constant integer");
5280 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
5283 Lex.Lex(); // Eat the ']'.
5285 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
5286 for (unsigned i = 0, e = Table.size(); i != e; ++i)
5287 SI->addCase(Table[i].first, Table[i].second);
5294 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
5295 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
5298 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
5299 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
5300 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
5303 if (!Address->getType()->isPointerTy())
5304 return Error(AddrLoc, "indirectbr address must have pointer type");
5306 // Parse the destination list.
5307 SmallVector<BasicBlock*, 16> DestList;
5309 if (Lex.getKind() != lltok::rsquare) {
5311 if (ParseTypeAndBasicBlock(DestBB, PFS))
5313 DestList.push_back(DestBB);
5315 while (EatIfPresent(lltok::comma)) {
5316 if (ParseTypeAndBasicBlock(DestBB, PFS))
5318 DestList.push_back(DestBB);
5322 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
5325 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
5326 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
5327 IBI->addDestination(DestList[i]);
5333 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
5334 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
5335 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
5336 LocTy CallLoc = Lex.getLoc();
5337 AttrBuilder RetAttrs, FnAttrs;
5338 std::vector<unsigned> FwdRefAttrGrps;
5341 Type *RetType = nullptr;
5344 SmallVector<ParamInfo, 16> ArgList;
5345 SmallVector<OperandBundleDef, 2> BundleList;
5347 BasicBlock *NormalBB, *UnwindBB;
5348 if (ParseOptionalCallingConv(CC) || ParseOptionalReturnAttrs(RetAttrs) ||
5349 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
5350 ParseValID(CalleeID) || ParseParameterList(ArgList, PFS) ||
5351 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
5353 ParseOptionalOperandBundles(BundleList, PFS) ||
5354 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
5355 ParseTypeAndBasicBlock(NormalBB, PFS) ||
5356 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
5357 ParseTypeAndBasicBlock(UnwindBB, PFS))
5360 // If RetType is a non-function pointer type, then this is the short syntax
5361 // for the call, which means that RetType is just the return type. Infer the
5362 // rest of the function argument types from the arguments that are present.
5363 FunctionType *Ty = dyn_cast<FunctionType>(RetType);
5365 // Pull out the types of all of the arguments...
5366 std::vector<Type*> ParamTypes;
5367 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
5368 ParamTypes.push_back(ArgList[i].V->getType());
5370 if (!FunctionType::isValidReturnType(RetType))
5371 return Error(RetTypeLoc, "Invalid result type for LLVM function");
5373 Ty = FunctionType::get(RetType, ParamTypes, false);
5378 // Look up the callee.
5380 if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS))
5383 // Set up the Attribute for the function.
5384 SmallVector<Value *, 8> Args;
5385 SmallVector<AttributeSet, 8> ArgAttrs;
5387 // Loop through FunctionType's arguments and ensure they are specified
5388 // correctly. Also, gather any parameter attributes.
5389 FunctionType::param_iterator I = Ty->param_begin();
5390 FunctionType::param_iterator E = Ty->param_end();
5391 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
5392 Type *ExpectedTy = nullptr;
5395 } else if (!Ty->isVarArg()) {
5396 return Error(ArgList[i].Loc, "too many arguments specified");
5399 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
5400 return Error(ArgList[i].Loc, "argument is not of expected type '" +
5401 getTypeString(ExpectedTy) + "'");
5402 Args.push_back(ArgList[i].V);
5403 ArgAttrs.push_back(ArgList[i].Attrs);
5407 return Error(CallLoc, "not enough parameters specified for call");
5409 if (FnAttrs.hasAlignmentAttr())
5410 return Error(CallLoc, "invoke instructions may not have an alignment");
5412 // Finish off the Attribute and check them
5414 AttributeList::get(Context, AttributeSet::get(Context, FnAttrs),
5415 AttributeSet::get(Context, RetAttrs), ArgAttrs);
5418 InvokeInst::Create(Ty, Callee, NormalBB, UnwindBB, Args, BundleList);
5419 II->setCallingConv(CC);
5420 II->setAttributes(PAL);
5421 ForwardRefAttrGroups[II] = FwdRefAttrGrps;
5427 /// ::= 'resume' TypeAndValue
5428 bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
5429 Value *Exn; LocTy ExnLoc;
5430 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
5433 ResumeInst *RI = ResumeInst::Create(Exn);
5438 bool LLParser::ParseExceptionArgs(SmallVectorImpl<Value *> &Args,
5439 PerFunctionState &PFS) {
5440 if (ParseToken(lltok::lsquare, "expected '[' in catchpad/cleanuppad"))
5443 while (Lex.getKind() != lltok::rsquare) {
5444 // If this isn't the first argument, we need a comma.
5445 if (!Args.empty() &&
5446 ParseToken(lltok::comma, "expected ',' in argument list"))
5449 // Parse the argument.
5451 Type *ArgTy = nullptr;
5452 if (ParseType(ArgTy, ArgLoc))
5456 if (ArgTy->isMetadataTy()) {
5457 if (ParseMetadataAsValue(V, PFS))
5460 if (ParseValue(ArgTy, V, PFS))
5466 Lex.Lex(); // Lex the ']'.
5471 /// ::= 'cleanupret' from Value unwind ('to' 'caller' | TypeAndValue)
5472 bool LLParser::ParseCleanupRet(Instruction *&Inst, PerFunctionState &PFS) {
5473 Value *CleanupPad = nullptr;
5475 if (ParseToken(lltok::kw_from, "expected 'from' after cleanupret"))
5478 if (ParseValue(Type::getTokenTy(Context), CleanupPad, PFS))
5481 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in cleanupret"))
5484 BasicBlock *UnwindBB = nullptr;
5485 if (Lex.getKind() == lltok::kw_to) {
5487 if (ParseToken(lltok::kw_caller, "expected 'caller' in cleanupret"))
5490 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5495 Inst = CleanupReturnInst::Create(CleanupPad, UnwindBB);
5500 /// ::= 'catchret' from Parent Value 'to' TypeAndValue
5501 bool LLParser::ParseCatchRet(Instruction *&Inst, PerFunctionState &PFS) {
5502 Value *CatchPad = nullptr;
5504 if (ParseToken(lltok::kw_from, "expected 'from' after catchret"))
5507 if (ParseValue(Type::getTokenTy(Context), CatchPad, PFS))
5511 if (ParseToken(lltok::kw_to, "expected 'to' in catchret") ||
5512 ParseTypeAndBasicBlock(BB, PFS))
5515 Inst = CatchReturnInst::Create(CatchPad, BB);
5519 /// ParseCatchSwitch
5520 /// ::= 'catchswitch' within Parent
5521 bool LLParser::ParseCatchSwitch(Instruction *&Inst, PerFunctionState &PFS) {
5525 if (ParseToken(lltok::kw_within, "expected 'within' after catchswitch"))
5528 if (Lex.getKind() != lltok::kw_none && Lex.getKind() != lltok::LocalVar &&
5529 Lex.getKind() != lltok::LocalVarID)
5530 return TokError("expected scope value for catchswitch");
5532 if (ParseValue(Type::getTokenTy(Context), ParentPad, PFS))
5535 if (ParseToken(lltok::lsquare, "expected '[' with catchswitch labels"))
5538 SmallVector<BasicBlock *, 32> Table;
5541 if (ParseTypeAndBasicBlock(DestBB, PFS))
5543 Table.push_back(DestBB);
5544 } while (EatIfPresent(lltok::comma));
5546 if (ParseToken(lltok::rsquare, "expected ']' after catchswitch labels"))
5549 if (ParseToken(lltok::kw_unwind,
5550 "expected 'unwind' after catchswitch scope"))
5553 BasicBlock *UnwindBB = nullptr;
5554 if (EatIfPresent(lltok::kw_to)) {
5555 if (ParseToken(lltok::kw_caller, "expected 'caller' in catchswitch"))
5558 if (ParseTypeAndBasicBlock(UnwindBB, PFS))
5563 CatchSwitchInst::Create(ParentPad, UnwindBB, Table.size());
5564 for (BasicBlock *DestBB : Table)
5565 CatchSwitch->addHandler(DestBB);
5571 /// ::= 'catchpad' ParamList 'to' TypeAndValue 'unwind' TypeAndValue
5572 bool LLParser::ParseCatchPad(Instruction *&Inst, PerFunctionState &PFS) {
5573 Value *CatchSwitch = nullptr;
5575 if (ParseToken(lltok::kw_within, "expected 'within' after catchpad"))
5578 if (Lex.getKind() != lltok::LocalVar && Lex.getKind() != lltok::LocalVarID)
5579 return TokError("expected scope value for catchpad");
5581 if (ParseValue(Type::getTokenTy(Context), CatchSwitch, PFS))
5584 SmallVector<Value *, 8> Args;
5585 if (ParseExceptionArgs(Args, PFS))
5588 Inst = CatchPadInst::Create(CatchSwitch, Args);
5593 /// ::= 'cleanuppad' within Parent ParamList
5594 bool LLParser::ParseCleanupPad(Instruction *&Inst, PerFunctionState &PFS) {
5595 Value *ParentPad = nullptr;
5597 if (ParseToken(lltok::kw_within, "expected 'within' after cleanuppad"))
5600 if (Lex.getKind() != lltok::kw_none && Lex.getKind() != lltok::LocalVar &&
5601 Lex.getKind() != lltok::LocalVarID)
5602 return TokError("expected scope value for cleanuppad");
5604 if (ParseValue(Type::getTokenTy(Context), ParentPad, PFS))
5607 SmallVector<Value *, 8> Args;
5608 if (ParseExceptionArgs(Args, PFS))
5611 Inst = CleanupPadInst::Create(ParentPad, Args);
5615 //===----------------------------------------------------------------------===//
5616 // Binary Operators.
5617 //===----------------------------------------------------------------------===//
5620 /// ::= ArithmeticOps TypeAndValue ',' Value
5622 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
5623 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
5624 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
5625 unsigned Opc, unsigned OperandType) {
5626 LocTy Loc; Value *LHS, *RHS;
5627 if (ParseTypeAndValue(LHS, Loc, PFS) ||
5628 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
5629 ParseValue(LHS->getType(), RHS, PFS))
5633 switch (OperandType) {
5634 default: llvm_unreachable("Unknown operand type!");
5635 case 0: // int or FP.
5636 Valid = LHS->getType()->isIntOrIntVectorTy() ||
5637 LHS->getType()->isFPOrFPVectorTy();
5639 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
5640 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
5644 return Error(Loc, "invalid operand type for instruction");
5646 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
5651 /// ::= ArithmeticOps TypeAndValue ',' Value {
5652 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
5654 LocTy Loc; Value *LHS, *RHS;
5655 if (ParseTypeAndValue(LHS, Loc, PFS) ||
5656 ParseToken(lltok::comma, "expected ',' in logical operation") ||
5657 ParseValue(LHS->getType(), RHS, PFS))
5660 if (!LHS->getType()->isIntOrIntVectorTy())
5661 return Error(Loc,"instruction requires integer or integer vector operands");
5663 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
5668 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
5669 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
5670 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
5672 // Parse the integer/fp comparison predicate.
5676 if (ParseCmpPredicate(Pred, Opc) ||
5677 ParseTypeAndValue(LHS, Loc, PFS) ||
5678 ParseToken(lltok::comma, "expected ',' after compare value") ||
5679 ParseValue(LHS->getType(), RHS, PFS))
5682 if (Opc == Instruction::FCmp) {
5683 if (!LHS->getType()->isFPOrFPVectorTy())
5684 return Error(Loc, "fcmp requires floating point operands");
5685 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
5687 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
5688 if (!LHS->getType()->isIntOrIntVectorTy() &&
5689 !LHS->getType()->getScalarType()->isPointerTy())
5690 return Error(Loc, "icmp requires integer operands");
5691 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
5696 //===----------------------------------------------------------------------===//
5697 // Other Instructions.
5698 //===----------------------------------------------------------------------===//
5702 /// ::= CastOpc TypeAndValue 'to' Type
5703 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
5707 Type *DestTy = nullptr;
5708 if (ParseTypeAndValue(Op, Loc, PFS) ||
5709 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
5713 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
5714 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
5715 return Error(Loc, "invalid cast opcode for cast from '" +
5716 getTypeString(Op->getType()) + "' to '" +
5717 getTypeString(DestTy) + "'");
5719 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
5724 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5725 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
5727 Value *Op0, *Op1, *Op2;
5728 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5729 ParseToken(lltok::comma, "expected ',' after select condition") ||
5730 ParseTypeAndValue(Op1, PFS) ||
5731 ParseToken(lltok::comma, "expected ',' after select value") ||
5732 ParseTypeAndValue(Op2, PFS))
5735 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
5736 return Error(Loc, Reason);
5738 Inst = SelectInst::Create(Op0, Op1, Op2);
5743 /// ::= 'va_arg' TypeAndValue ',' Type
5744 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
5746 Type *EltTy = nullptr;
5748 if (ParseTypeAndValue(Op, PFS) ||
5749 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
5750 ParseType(EltTy, TypeLoc))
5753 if (!EltTy->isFirstClassType())
5754 return Error(TypeLoc, "va_arg requires operand with first class type");
5756 Inst = new VAArgInst(Op, EltTy);
5760 /// ParseExtractElement
5761 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
5762 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
5765 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5766 ParseToken(lltok::comma, "expected ',' after extract value") ||
5767 ParseTypeAndValue(Op1, PFS))
5770 if (!ExtractElementInst::isValidOperands(Op0, Op1))
5771 return Error(Loc, "invalid extractelement operands");
5773 Inst = ExtractElementInst::Create(Op0, Op1);
5777 /// ParseInsertElement
5778 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5779 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
5781 Value *Op0, *Op1, *Op2;
5782 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5783 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5784 ParseTypeAndValue(Op1, PFS) ||
5785 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5786 ParseTypeAndValue(Op2, PFS))
5789 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
5790 return Error(Loc, "invalid insertelement operands");
5792 Inst = InsertElementInst::Create(Op0, Op1, Op2);
5796 /// ParseShuffleVector
5797 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5798 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
5800 Value *Op0, *Op1, *Op2;
5801 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5802 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
5803 ParseTypeAndValue(Op1, PFS) ||
5804 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
5805 ParseTypeAndValue(Op2, PFS))
5808 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
5809 return Error(Loc, "invalid shufflevector operands");
5811 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
5816 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
5817 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
5818 Type *Ty = nullptr; LocTy TypeLoc;
5821 if (ParseType(Ty, TypeLoc) ||
5822 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
5823 ParseValue(Ty, Op0, PFS) ||
5824 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5825 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
5826 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
5829 bool AteExtraComma = false;
5830 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
5833 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
5835 if (!EatIfPresent(lltok::comma))
5838 if (Lex.getKind() == lltok::MetadataVar) {
5839 AteExtraComma = true;
5843 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
5844 ParseValue(Ty, Op0, PFS) ||
5845 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5846 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
5847 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
5851 if (!Ty->isFirstClassType())
5852 return Error(TypeLoc, "phi node must have first class type");
5854 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
5855 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
5856 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
5858 return AteExtraComma ? InstExtraComma : InstNormal;
5862 /// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
5864 /// ::= 'catch' TypeAndValue
5866 /// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
5867 bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
5868 Type *Ty = nullptr; LocTy TyLoc;
5870 if (ParseType(Ty, TyLoc))
5873 std::unique_ptr<LandingPadInst> LP(LandingPadInst::Create(Ty, 0));
5874 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
5876 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
5877 LandingPadInst::ClauseType CT;
5878 if (EatIfPresent(lltok::kw_catch))
5879 CT = LandingPadInst::Catch;
5880 else if (EatIfPresent(lltok::kw_filter))
5881 CT = LandingPadInst::Filter;
5883 return TokError("expected 'catch' or 'filter' clause type");
5887 if (ParseTypeAndValue(V, VLoc, PFS))
5890 // A 'catch' type expects a non-array constant. A filter clause expects an
5892 if (CT == LandingPadInst::Catch) {
5893 if (isa<ArrayType>(V->getType()))
5894 Error(VLoc, "'catch' clause has an invalid type");
5896 if (!isa<ArrayType>(V->getType()))
5897 Error(VLoc, "'filter' clause has an invalid type");
5900 Constant *CV = dyn_cast<Constant>(V);
5902 return Error(VLoc, "clause argument must be a constant");
5906 Inst = LP.release();
5911 /// ::= 'call' OptionalFastMathFlags OptionalCallingConv
5912 /// OptionalAttrs Type Value ParameterList OptionalAttrs
5913 /// ::= 'tail' 'call' OptionalFastMathFlags OptionalCallingConv
5914 /// OptionalAttrs Type Value ParameterList OptionalAttrs
5915 /// ::= 'musttail' 'call' OptionalFastMathFlags OptionalCallingConv
5916 /// OptionalAttrs Type Value ParameterList OptionalAttrs
5917 /// ::= 'notail' 'call' OptionalFastMathFlags OptionalCallingConv
5918 /// OptionalAttrs Type Value ParameterList OptionalAttrs
5919 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
5920 CallInst::TailCallKind TCK) {
5921 AttrBuilder RetAttrs, FnAttrs;
5922 std::vector<unsigned> FwdRefAttrGrps;
5925 Type *RetType = nullptr;
5928 SmallVector<ParamInfo, 16> ArgList;
5929 SmallVector<OperandBundleDef, 2> BundleList;
5930 LocTy CallLoc = Lex.getLoc();
5932 if (TCK != CallInst::TCK_None &&
5933 ParseToken(lltok::kw_call,
5934 "expected 'tail call', 'musttail call', or 'notail call'"))
5937 FastMathFlags FMF = EatFastMathFlagsIfPresent();
5939 if (ParseOptionalCallingConv(CC) || ParseOptionalReturnAttrs(RetAttrs) ||
5940 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
5941 ParseValID(CalleeID) ||
5942 ParseParameterList(ArgList, PFS, TCK == CallInst::TCK_MustTail,
5943 PFS.getFunction().isVarArg()) ||
5944 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false, BuiltinLoc) ||
5945 ParseOptionalOperandBundles(BundleList, PFS))
5948 if (FMF.any() && !RetType->isFPOrFPVectorTy())
5949 return Error(CallLoc, "fast-math-flags specified for call without "
5950 "floating-point scalar or vector return type");
5952 // If RetType is a non-function pointer type, then this is the short syntax
5953 // for the call, which means that RetType is just the return type. Infer the
5954 // rest of the function argument types from the arguments that are present.
5955 FunctionType *Ty = dyn_cast<FunctionType>(RetType);
5957 // Pull out the types of all of the arguments...
5958 std::vector<Type*> ParamTypes;
5959 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
5960 ParamTypes.push_back(ArgList[i].V->getType());
5962 if (!FunctionType::isValidReturnType(RetType))
5963 return Error(RetTypeLoc, "Invalid result type for LLVM function");
5965 Ty = FunctionType::get(RetType, ParamTypes, false);
5970 // Look up the callee.
5972 if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS))
5975 // Set up the Attribute for the function.
5976 SmallVector<AttributeSet, 8> Attrs;
5978 SmallVector<Value*, 8> Args;
5980 // Loop through FunctionType's arguments and ensure they are specified
5981 // correctly. Also, gather any parameter attributes.
5982 FunctionType::param_iterator I = Ty->param_begin();
5983 FunctionType::param_iterator E = Ty->param_end();
5984 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
5985 Type *ExpectedTy = nullptr;
5988 } else if (!Ty->isVarArg()) {
5989 return Error(ArgList[i].Loc, "too many arguments specified");
5992 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
5993 return Error(ArgList[i].Loc, "argument is not of expected type '" +
5994 getTypeString(ExpectedTy) + "'");
5995 Args.push_back(ArgList[i].V);
5996 Attrs.push_back(ArgList[i].Attrs);
6000 return Error(CallLoc, "not enough parameters specified for call");
6002 if (FnAttrs.hasAlignmentAttr())
6003 return Error(CallLoc, "call instructions may not have an alignment");
6005 // Finish off the Attribute and check them
6007 AttributeList::get(Context, AttributeSet::get(Context, FnAttrs),
6008 AttributeSet::get(Context, RetAttrs), Attrs);
6010 CallInst *CI = CallInst::Create(Ty, Callee, Args, BundleList);
6011 CI->setTailCallKind(TCK);
6012 CI->setCallingConv(CC);
6014 CI->setFastMathFlags(FMF);
6015 CI->setAttributes(PAL);
6016 ForwardRefAttrGroups[CI] = FwdRefAttrGrps;
6021 //===----------------------------------------------------------------------===//
6022 // Memory Instructions.
6023 //===----------------------------------------------------------------------===//
6026 /// ::= 'alloca' 'inalloca'? 'swifterror'? Type (',' TypeAndValue)?
6027 /// (',' 'align' i32)?
6028 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
6029 Value *Size = nullptr;
6030 LocTy SizeLoc, TyLoc, ASLoc;
6031 unsigned Alignment = 0;
6032 unsigned AddrSpace = 0;
6035 bool IsInAlloca = EatIfPresent(lltok::kw_inalloca);
6036 bool IsSwiftError = EatIfPresent(lltok::kw_swifterror);
6038 if (ParseType(Ty, TyLoc)) return true;
6040 if (Ty->isFunctionTy() || !PointerType::isValidElementType(Ty))
6041 return Error(TyLoc, "invalid type for alloca");
6043 bool AteExtraComma = false;
6044 if (EatIfPresent(lltok::comma)) {
6045 if (Lex.getKind() == lltok::kw_align) {
6046 if (ParseOptionalAlignment(Alignment))
6048 if (ParseOptionalCommaAddrSpace(AddrSpace, ASLoc, AteExtraComma))
6050 } else if (Lex.getKind() == lltok::kw_addrspace) {
6051 ASLoc = Lex.getLoc();
6052 if (ParseOptionalAddrSpace(AddrSpace))
6054 } else if (Lex.getKind() == lltok::MetadataVar) {
6055 AteExtraComma = true;
6057 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
6058 ParseOptionalCommaAlign(Alignment, AteExtraComma) ||
6060 ParseOptionalCommaAddrSpace(AddrSpace, ASLoc, AteExtraComma)))
6065 if (Size && !Size->getType()->isIntegerTy())
6066 return Error(SizeLoc, "element count must have integer type");
6068 const DataLayout &DL = M->getDataLayout();
6069 unsigned AS = DL.getAllocaAddrSpace();
6070 if (AS != AddrSpace) {
6071 // TODO: In the future it should be possible to specify addrspace per-alloca.
6072 return Error(ASLoc, "address space must match datalayout");
6075 AllocaInst *AI = new AllocaInst(Ty, AS, Size, Alignment);
6076 AI->setUsedWithInAlloca(IsInAlloca);
6077 AI->setSwiftError(IsSwiftError);
6079 return AteExtraComma ? InstExtraComma : InstNormal;
6083 /// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
6084 /// ::= 'load' 'atomic' 'volatile'? TypeAndValue
6085 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
6086 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
6087 Value *Val; LocTy Loc;
6088 unsigned Alignment = 0;
6089 bool AteExtraComma = false;
6090 bool isAtomic = false;
6091 AtomicOrdering Ordering = AtomicOrdering::NotAtomic;
6092 SynchronizationScope Scope = CrossThread;
6094 if (Lex.getKind() == lltok::kw_atomic) {
6099 bool isVolatile = false;
6100 if (Lex.getKind() == lltok::kw_volatile) {
6106 LocTy ExplicitTypeLoc = Lex.getLoc();
6107 if (ParseType(Ty) ||
6108 ParseToken(lltok::comma, "expected comma after load's type") ||
6109 ParseTypeAndValue(Val, Loc, PFS) ||
6110 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
6111 ParseOptionalCommaAlign(Alignment, AteExtraComma))
6114 if (!Val->getType()->isPointerTy() || !Ty->isFirstClassType())
6115 return Error(Loc, "load operand must be a pointer to a first class type");
6116 if (isAtomic && !Alignment)
6117 return Error(Loc, "atomic load must have explicit non-zero alignment");
6118 if (Ordering == AtomicOrdering::Release ||
6119 Ordering == AtomicOrdering::AcquireRelease)
6120 return Error(Loc, "atomic load cannot use Release ordering");
6122 if (Ty != cast<PointerType>(Val->getType())->getElementType())
6123 return Error(ExplicitTypeLoc,
6124 "explicit pointee type doesn't match operand's pointee type");
6126 Inst = new LoadInst(Ty, Val, "", isVolatile, Alignment, Ordering, Scope);
6127 return AteExtraComma ? InstExtraComma : InstNormal;
6132 /// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
6133 /// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
6134 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
6135 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
6136 Value *Val, *Ptr; LocTy Loc, PtrLoc;
6137 unsigned Alignment = 0;
6138 bool AteExtraComma = false;
6139 bool isAtomic = false;
6140 AtomicOrdering Ordering = AtomicOrdering::NotAtomic;
6141 SynchronizationScope Scope = CrossThread;
6143 if (Lex.getKind() == lltok::kw_atomic) {
6148 bool isVolatile = false;
6149 if (Lex.getKind() == lltok::kw_volatile) {
6154 if (ParseTypeAndValue(Val, Loc, PFS) ||
6155 ParseToken(lltok::comma, "expected ',' after store operand") ||
6156 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
6157 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
6158 ParseOptionalCommaAlign(Alignment, AteExtraComma))
6161 if (!Ptr->getType()->isPointerTy())
6162 return Error(PtrLoc, "store operand must be a pointer");
6163 if (!Val->getType()->isFirstClassType())
6164 return Error(Loc, "store operand must be a first class value");
6165 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
6166 return Error(Loc, "stored value and pointer type do not match");
6167 if (isAtomic && !Alignment)
6168 return Error(Loc, "atomic store must have explicit non-zero alignment");
6169 if (Ordering == AtomicOrdering::Acquire ||
6170 Ordering == AtomicOrdering::AcquireRelease)
6171 return Error(Loc, "atomic store cannot use Acquire ordering");
6173 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, Scope);
6174 return AteExtraComma ? InstExtraComma : InstNormal;
6178 /// ::= 'cmpxchg' 'weak'? 'volatile'? TypeAndValue ',' TypeAndValue ','
6179 /// TypeAndValue 'singlethread'? AtomicOrdering AtomicOrdering
6180 int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
6181 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
6182 bool AteExtraComma = false;
6183 AtomicOrdering SuccessOrdering = AtomicOrdering::NotAtomic;
6184 AtomicOrdering FailureOrdering = AtomicOrdering::NotAtomic;
6185 SynchronizationScope Scope = CrossThread;
6186 bool isVolatile = false;
6187 bool isWeak = false;
6189 if (EatIfPresent(lltok::kw_weak))
6192 if (EatIfPresent(lltok::kw_volatile))
6195 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
6196 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
6197 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
6198 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
6199 ParseTypeAndValue(New, NewLoc, PFS) ||
6200 ParseScopeAndOrdering(true /*Always atomic*/, Scope, SuccessOrdering) ||
6201 ParseOrdering(FailureOrdering))
6204 if (SuccessOrdering == AtomicOrdering::Unordered ||
6205 FailureOrdering == AtomicOrdering::Unordered)
6206 return TokError("cmpxchg cannot be unordered");
6207 if (isStrongerThan(FailureOrdering, SuccessOrdering))
6208 return TokError("cmpxchg failure argument shall be no stronger than the "
6209 "success argument");
6210 if (FailureOrdering == AtomicOrdering::Release ||
6211 FailureOrdering == AtomicOrdering::AcquireRelease)
6213 "cmpxchg failure ordering cannot include release semantics");
6214 if (!Ptr->getType()->isPointerTy())
6215 return Error(PtrLoc, "cmpxchg operand must be a pointer");
6216 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
6217 return Error(CmpLoc, "compare value and pointer type do not match");
6218 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
6219 return Error(NewLoc, "new value and pointer type do not match");
6220 if (!New->getType()->isFirstClassType())
6221 return Error(NewLoc, "cmpxchg operand must be a first class value");
6222 AtomicCmpXchgInst *CXI = new AtomicCmpXchgInst(
6223 Ptr, Cmp, New, SuccessOrdering, FailureOrdering, Scope);
6224 CXI->setVolatile(isVolatile);
6225 CXI->setWeak(isWeak);
6227 return AteExtraComma ? InstExtraComma : InstNormal;
6231 /// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
6232 /// 'singlethread'? AtomicOrdering
6233 int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
6234 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
6235 bool AteExtraComma = false;
6236 AtomicOrdering Ordering = AtomicOrdering::NotAtomic;
6237 SynchronizationScope Scope = CrossThread;
6238 bool isVolatile = false;
6239 AtomicRMWInst::BinOp Operation;
6241 if (EatIfPresent(lltok::kw_volatile))
6244 switch (Lex.getKind()) {
6245 default: return TokError("expected binary operation in atomicrmw");
6246 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
6247 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
6248 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
6249 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
6250 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
6251 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
6252 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
6253 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
6254 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
6255 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
6256 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
6258 Lex.Lex(); // Eat the operation.
6260 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
6261 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
6262 ParseTypeAndValue(Val, ValLoc, PFS) ||
6263 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
6266 if (Ordering == AtomicOrdering::Unordered)
6267 return TokError("atomicrmw cannot be unordered");
6268 if (!Ptr->getType()->isPointerTy())
6269 return Error(PtrLoc, "atomicrmw operand must be a pointer");
6270 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
6271 return Error(ValLoc, "atomicrmw value and pointer type do not match");
6272 if (!Val->getType()->isIntegerTy())
6273 return Error(ValLoc, "atomicrmw operand must be an integer");
6274 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
6275 if (Size < 8 || (Size & (Size - 1)))
6276 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
6279 AtomicRMWInst *RMWI =
6280 new AtomicRMWInst(Operation, Ptr, Val, Ordering, Scope);
6281 RMWI->setVolatile(isVolatile);
6283 return AteExtraComma ? InstExtraComma : InstNormal;
6287 /// ::= 'fence' 'singlethread'? AtomicOrdering
6288 int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
6289 AtomicOrdering Ordering = AtomicOrdering::NotAtomic;
6290 SynchronizationScope Scope = CrossThread;
6291 if (ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
6294 if (Ordering == AtomicOrdering::Unordered)
6295 return TokError("fence cannot be unordered");
6296 if (Ordering == AtomicOrdering::Monotonic)
6297 return TokError("fence cannot be monotonic");
6299 Inst = new FenceInst(Context, Ordering, Scope);
6303 /// ParseGetElementPtr
6304 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
6305 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
6306 Value *Ptr = nullptr;
6307 Value *Val = nullptr;
6310 bool InBounds = EatIfPresent(lltok::kw_inbounds);
6313 LocTy ExplicitTypeLoc = Lex.getLoc();
6314 if (ParseType(Ty) ||
6315 ParseToken(lltok::comma, "expected comma after getelementptr's type") ||
6316 ParseTypeAndValue(Ptr, Loc, PFS))
6319 Type *BaseType = Ptr->getType();
6320 PointerType *BasePointerType = dyn_cast<PointerType>(BaseType->getScalarType());
6321 if (!BasePointerType)
6322 return Error(Loc, "base of getelementptr must be a pointer");
6324 if (Ty != BasePointerType->getElementType())
6325 return Error(ExplicitTypeLoc,
6326 "explicit pointee type doesn't match operand's pointee type");
6328 SmallVector<Value*, 16> Indices;
6329 bool AteExtraComma = false;
6330 // GEP returns a vector of pointers if at least one of parameters is a vector.
6331 // All vector parameters should have the same vector width.
6332 unsigned GEPWidth = BaseType->isVectorTy() ?
6333 BaseType->getVectorNumElements() : 0;
6335 while (EatIfPresent(lltok::comma)) {
6336 if (Lex.getKind() == lltok::MetadataVar) {
6337 AteExtraComma = true;
6340 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
6341 if (!Val->getType()->getScalarType()->isIntegerTy())
6342 return Error(EltLoc, "getelementptr index must be an integer");
6344 if (Val->getType()->isVectorTy()) {
6345 unsigned ValNumEl = Val->getType()->getVectorNumElements();
6346 if (GEPWidth && GEPWidth != ValNumEl)
6347 return Error(EltLoc,
6348 "getelementptr vector index has a wrong number of elements");
6349 GEPWidth = ValNumEl;
6351 Indices.push_back(Val);
6354 SmallPtrSet<Type*, 4> Visited;
6355 if (!Indices.empty() && !Ty->isSized(&Visited))
6356 return Error(Loc, "base element of getelementptr must be sized");
6358 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
6359 return Error(Loc, "invalid getelementptr indices");
6360 Inst = GetElementPtrInst::Create(Ty, Ptr, Indices);
6362 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
6363 return AteExtraComma ? InstExtraComma : InstNormal;
6366 /// ParseExtractValue
6367 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
6368 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
6369 Value *Val; LocTy Loc;
6370 SmallVector<unsigned, 4> Indices;
6372 if (ParseTypeAndValue(Val, Loc, PFS) ||
6373 ParseIndexList(Indices, AteExtraComma))
6376 if (!Val->getType()->isAggregateType())
6377 return Error(Loc, "extractvalue operand must be aggregate type");
6379 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
6380 return Error(Loc, "invalid indices for extractvalue");
6381 Inst = ExtractValueInst::Create(Val, Indices);
6382 return AteExtraComma ? InstExtraComma : InstNormal;
6385 /// ParseInsertValue
6386 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
6387 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
6388 Value *Val0, *Val1; LocTy Loc0, Loc1;
6389 SmallVector<unsigned, 4> Indices;
6391 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
6392 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
6393 ParseTypeAndValue(Val1, Loc1, PFS) ||
6394 ParseIndexList(Indices, AteExtraComma))
6397 if (!Val0->getType()->isAggregateType())
6398 return Error(Loc0, "insertvalue operand must be aggregate type");
6400 Type *IndexedType = ExtractValueInst::getIndexedType(Val0->getType(), Indices);
6402 return Error(Loc0, "invalid indices for insertvalue");
6403 if (IndexedType != Val1->getType())
6404 return Error(Loc1, "insertvalue operand and field disagree in type: '" +
6405 getTypeString(Val1->getType()) + "' instead of '" +
6406 getTypeString(IndexedType) + "'");
6407 Inst = InsertValueInst::Create(Val0, Val1, Indices);
6408 return AteExtraComma ? InstExtraComma : InstNormal;
6411 //===----------------------------------------------------------------------===//
6412 // Embedded metadata.
6413 //===----------------------------------------------------------------------===//
6415 /// ParseMDNodeVector
6416 /// ::= { Element (',' Element)* }
6418 /// ::= 'null' | TypeAndValue
6419 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Metadata *> &Elts) {
6420 if (ParseToken(lltok::lbrace, "expected '{' here"))
6423 // Check for an empty list.
6424 if (EatIfPresent(lltok::rbrace))
6428 // Null is a special case since it is typeless.
6429 if (EatIfPresent(lltok::kw_null)) {
6430 Elts.push_back(nullptr);
6435 if (ParseMetadata(MD, nullptr))
6438 } while (EatIfPresent(lltok::comma));
6440 return ParseToken(lltok::rbrace, "expected end of metadata node");
6443 //===----------------------------------------------------------------------===//
6444 // Use-list order directives.
6445 //===----------------------------------------------------------------------===//
6446 bool LLParser::sortUseListOrder(Value *V, ArrayRef<unsigned> Indexes,
6449 return Error(Loc, "value has no uses");
6451 unsigned NumUses = 0;
6452 SmallDenseMap<const Use *, unsigned, 16> Order;
6453 for (const Use &U : V->uses()) {
6454 if (++NumUses > Indexes.size())
6456 Order[&U] = Indexes[NumUses - 1];
6459 return Error(Loc, "value only has one use");
6460 if (Order.size() != Indexes.size() || NumUses > Indexes.size())
6461 return Error(Loc, "wrong number of indexes, expected " +
6462 Twine(std::distance(V->use_begin(), V->use_end())));
6464 V->sortUseList([&](const Use &L, const Use &R) {
6465 return Order.lookup(&L) < Order.lookup(&R);
6470 /// ParseUseListOrderIndexes
6471 /// ::= '{' uint32 (',' uint32)+ '}'
6472 bool LLParser::ParseUseListOrderIndexes(SmallVectorImpl<unsigned> &Indexes) {
6473 SMLoc Loc = Lex.getLoc();
6474 if (ParseToken(lltok::lbrace, "expected '{' here"))
6476 if (Lex.getKind() == lltok::rbrace)
6477 return Lex.Error("expected non-empty list of uselistorder indexes");
6479 // Use Offset, Max, and IsOrdered to check consistency of indexes. The
6480 // indexes should be distinct numbers in the range [0, size-1], and should
6482 unsigned Offset = 0;
6484 bool IsOrdered = true;
6485 assert(Indexes.empty() && "Expected empty order vector");
6488 if (ParseUInt32(Index))
6491 // Update consistency checks.
6492 Offset += Index - Indexes.size();
6493 Max = std::max(Max, Index);
6494 IsOrdered &= Index == Indexes.size();
6496 Indexes.push_back(Index);
6497 } while (EatIfPresent(lltok::comma));
6499 if (ParseToken(lltok::rbrace, "expected '}' here"))
6502 if (Indexes.size() < 2)
6503 return Error(Loc, "expected >= 2 uselistorder indexes");
6504 if (Offset != 0 || Max >= Indexes.size())
6505 return Error(Loc, "expected distinct uselistorder indexes in range [0, size)");
6507 return Error(Loc, "expected uselistorder indexes to change the order");
6512 /// ParseUseListOrder
6513 /// ::= 'uselistorder' Type Value ',' UseListOrderIndexes
6514 bool LLParser::ParseUseListOrder(PerFunctionState *PFS) {
6515 SMLoc Loc = Lex.getLoc();
6516 if (ParseToken(lltok::kw_uselistorder, "expected uselistorder directive"))
6520 SmallVector<unsigned, 16> Indexes;
6521 if (ParseTypeAndValue(V, PFS) ||
6522 ParseToken(lltok::comma, "expected comma in uselistorder directive") ||
6523 ParseUseListOrderIndexes(Indexes))
6526 return sortUseListOrder(V, Indexes, Loc);
6529 /// ParseUseListOrderBB
6530 /// ::= 'uselistorder_bb' @foo ',' %bar ',' UseListOrderIndexes
6531 bool LLParser::ParseUseListOrderBB() {
6532 assert(Lex.getKind() == lltok::kw_uselistorder_bb);
6533 SMLoc Loc = Lex.getLoc();
6537 SmallVector<unsigned, 16> Indexes;
6538 if (ParseValID(Fn) ||
6539 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
6540 ParseValID(Label) ||
6541 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
6542 ParseUseListOrderIndexes(Indexes))
6545 // Check the function.
6547 if (Fn.Kind == ValID::t_GlobalName)
6548 GV = M->getNamedValue(Fn.StrVal);
6549 else if (Fn.Kind == ValID::t_GlobalID)
6550 GV = Fn.UIntVal < NumberedVals.size() ? NumberedVals[Fn.UIntVal] : nullptr;
6552 return Error(Fn.Loc, "expected function name in uselistorder_bb");
6554 return Error(Fn.Loc, "invalid function forward reference in uselistorder_bb");
6555 auto *F = dyn_cast<Function>(GV);
6557 return Error(Fn.Loc, "expected function name in uselistorder_bb");
6558 if (F->isDeclaration())
6559 return Error(Fn.Loc, "invalid declaration in uselistorder_bb");
6561 // Check the basic block.
6562 if (Label.Kind == ValID::t_LocalID)
6563 return Error(Label.Loc, "invalid numeric label in uselistorder_bb");
6564 if (Label.Kind != ValID::t_LocalName)
6565 return Error(Label.Loc, "expected basic block name in uselistorder_bb");
6566 Value *V = F->getValueSymbolTable()->lookup(Label.StrVal);
6568 return Error(Label.Loc, "invalid basic block in uselistorder_bb");
6569 if (!isa<BasicBlock>(V))
6570 return Error(Label.Loc, "expected basic block in uselistorder_bb");
6572 return sortUseListOrder(V, Indexes, Loc);