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 (std::map<Value*, std::vector<unsigned> >::iterator
125 I = ForwardRefAttrGroups.begin(), E = ForwardRefAttrGroups.end();
128 std::vector<unsigned> &Vec = I->second;
131 for (std::vector<unsigned>::iterator VI = Vec.begin(), VE = Vec.end();
133 B.merge(NumberedAttrBuilders[*VI]);
135 if (Function *Fn = dyn_cast<Function>(V)) {
136 AttributeSet AS = Fn->getAttributes();
137 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
138 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
139 AS.getFnAttributes());
143 // If the alignment was parsed as an attribute, move to the alignment
145 if (FnAttrs.hasAlignmentAttr()) {
146 Fn->setAlignment(FnAttrs.getAlignment());
147 FnAttrs.removeAttribute(Attribute::Alignment);
150 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
151 AttributeSet::get(Context,
152 AttributeSet::FunctionIndex,
154 Fn->setAttributes(AS);
155 } else if (CallInst *CI = dyn_cast<CallInst>(V)) {
156 AttributeSet AS = CI->getAttributes();
157 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
158 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
159 AS.getFnAttributes());
161 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
162 AttributeSet::get(Context,
163 AttributeSet::FunctionIndex,
165 CI->setAttributes(AS);
166 } else if (InvokeInst *II = dyn_cast<InvokeInst>(V)) {
167 AttributeSet AS = II->getAttributes();
168 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
169 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
170 AS.getFnAttributes());
172 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
173 AttributeSet::get(Context,
174 AttributeSet::FunctionIndex,
176 II->setAttributes(AS);
178 llvm_unreachable("invalid object with forward attribute group reference");
182 // If there are entries in ForwardRefBlockAddresses at this point, the
183 // function was never defined.
184 if (!ForwardRefBlockAddresses.empty())
185 return Error(ForwardRefBlockAddresses.begin()->first.Loc,
186 "expected function name in blockaddress");
188 for (const auto &NT : NumberedTypes)
189 if (NT.second.second.isValid())
190 return Error(NT.second.second,
191 "use of undefined type '%" + Twine(NT.first) + "'");
193 for (StringMap<std::pair<Type*, LocTy> >::iterator I =
194 NamedTypes.begin(), E = NamedTypes.end(); I != E; ++I)
195 if (I->second.second.isValid())
196 return Error(I->second.second,
197 "use of undefined type named '" + I->getKey() + "'");
199 if (!ForwardRefComdats.empty())
200 return Error(ForwardRefComdats.begin()->second,
201 "use of undefined comdat '$" +
202 ForwardRefComdats.begin()->first + "'");
204 if (!ForwardRefVals.empty())
205 return Error(ForwardRefVals.begin()->second.second,
206 "use of undefined value '@" + ForwardRefVals.begin()->first +
209 if (!ForwardRefValIDs.empty())
210 return Error(ForwardRefValIDs.begin()->second.second,
211 "use of undefined value '@" +
212 Twine(ForwardRefValIDs.begin()->first) + "'");
214 if (!ForwardRefMDNodes.empty())
215 return Error(ForwardRefMDNodes.begin()->second.second,
216 "use of undefined metadata '!" +
217 Twine(ForwardRefMDNodes.begin()->first) + "'");
219 // Resolve metadata cycles.
220 for (auto &N : NumberedMetadata) {
221 if (N.second && !N.second->isResolved())
222 N.second->resolveCycles();
225 for (auto *Inst : InstsWithTBAATag) {
226 MDNode *MD = Inst->getMetadata(LLVMContext::MD_tbaa);
227 assert(MD && "UpgradeInstWithTBAATag should have a TBAA tag");
228 auto *UpgradedMD = UpgradeTBAANode(*MD);
229 if (MD != UpgradedMD)
230 Inst->setMetadata(LLVMContext::MD_tbaa, UpgradedMD);
233 // Look for intrinsic functions and CallInst that need to be upgraded
234 for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; )
235 UpgradeCallsToIntrinsic(&*FI++); // must be post-increment, as we remove
237 // Some types could be renamed during loading if several modules are
238 // loaded in the same LLVMContext (LTO scenario). In this case we should
239 // remangle intrinsics names as well.
240 for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; ) {
241 Function *F = &*FI++;
242 if (auto Remangled = Intrinsic::remangleIntrinsicFunction(F)) {
243 F->replaceAllUsesWith(Remangled.getValue());
244 F->eraseFromParent();
248 UpgradeDebugInfo(*M);
250 UpgradeModuleFlags(*M);
254 // Initialize the slot mapping.
255 // Because by this point we've parsed and validated everything, we can "steal"
256 // the mapping from LLParser as it doesn't need it anymore.
257 Slots->GlobalValues = std::move(NumberedVals);
258 Slots->MetadataNodes = std::move(NumberedMetadata);
259 for (const auto &I : NamedTypes)
260 Slots->NamedTypes.insert(std::make_pair(I.getKey(), I.second.first));
261 for (const auto &I : NumberedTypes)
262 Slots->Types.insert(std::make_pair(I.first, I.second.first));
267 //===----------------------------------------------------------------------===//
268 // Top-Level Entities
269 //===----------------------------------------------------------------------===//
271 bool LLParser::ParseTopLevelEntities() {
273 switch (Lex.getKind()) {
274 default: return TokError("expected top-level entity");
275 case lltok::Eof: return false;
276 case lltok::kw_declare: if (ParseDeclare()) return true; break;
277 case lltok::kw_define: if (ParseDefine()) return true; break;
278 case lltok::kw_module: if (ParseModuleAsm()) return true; break;
279 case lltok::kw_target: if (ParseTargetDefinition()) return true; break;
280 case lltok::kw_source_filename:
281 if (ParseSourceFileName())
284 case lltok::kw_deplibs: if (ParseDepLibs()) return true; break;
285 case lltok::LocalVarID: if (ParseUnnamedType()) return true; break;
286 case lltok::LocalVar: if (ParseNamedType()) return true; break;
287 case lltok::GlobalID: if (ParseUnnamedGlobal()) return true; break;
288 case lltok::GlobalVar: if (ParseNamedGlobal()) return true; break;
289 case lltok::ComdatVar: if (parseComdat()) return true; break;
290 case lltok::exclaim: if (ParseStandaloneMetadata()) return true; break;
291 case lltok::MetadataVar:if (ParseNamedMetadata()) return true; break;
292 case lltok::kw_attributes: if (ParseUnnamedAttrGrp()) return true; break;
293 case lltok::kw_uselistorder: if (ParseUseListOrder()) return true; break;
294 case lltok::kw_uselistorder_bb:
295 if (ParseUseListOrderBB())
303 /// ::= 'module' 'asm' STRINGCONSTANT
304 bool LLParser::ParseModuleAsm() {
305 assert(Lex.getKind() == lltok::kw_module);
309 if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
310 ParseStringConstant(AsmStr)) return true;
312 M->appendModuleInlineAsm(AsmStr);
317 /// ::= 'target' 'triple' '=' STRINGCONSTANT
318 /// ::= 'target' 'datalayout' '=' STRINGCONSTANT
319 bool LLParser::ParseTargetDefinition() {
320 assert(Lex.getKind() == lltok::kw_target);
323 default: return TokError("unknown target property");
324 case lltok::kw_triple:
326 if (ParseToken(lltok::equal, "expected '=' after target triple") ||
327 ParseStringConstant(Str))
329 M->setTargetTriple(Str);
331 case lltok::kw_datalayout:
333 if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
334 ParseStringConstant(Str))
336 M->setDataLayout(Str);
342 /// ::= 'source_filename' '=' STRINGCONSTANT
343 bool LLParser::ParseSourceFileName() {
344 assert(Lex.getKind() == lltok::kw_source_filename);
347 if (ParseToken(lltok::equal, "expected '=' after source_filename") ||
348 ParseStringConstant(Str))
350 M->setSourceFileName(Str);
355 /// ::= 'deplibs' '=' '[' ']'
356 /// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
357 /// FIXME: Remove in 4.0. Currently parse, but ignore.
358 bool LLParser::ParseDepLibs() {
359 assert(Lex.getKind() == lltok::kw_deplibs);
361 if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
362 ParseToken(lltok::lsquare, "expected '=' after deplibs"))
365 if (EatIfPresent(lltok::rsquare))
370 if (ParseStringConstant(Str)) return true;
371 } while (EatIfPresent(lltok::comma));
373 return ParseToken(lltok::rsquare, "expected ']' at end of list");
376 /// ParseUnnamedType:
377 /// ::= LocalVarID '=' 'type' type
378 bool LLParser::ParseUnnamedType() {
379 LocTy TypeLoc = Lex.getLoc();
380 unsigned TypeID = Lex.getUIntVal();
381 Lex.Lex(); // eat LocalVarID;
383 if (ParseToken(lltok::equal, "expected '=' after name") ||
384 ParseToken(lltok::kw_type, "expected 'type' after '='"))
387 Type *Result = nullptr;
388 if (ParseStructDefinition(TypeLoc, "",
389 NumberedTypes[TypeID], Result)) return true;
391 if (!isa<StructType>(Result)) {
392 std::pair<Type*, LocTy> &Entry = NumberedTypes[TypeID];
394 return Error(TypeLoc, "non-struct types may not be recursive");
395 Entry.first = Result;
396 Entry.second = SMLoc();
403 /// ::= LocalVar '=' 'type' type
404 bool LLParser::ParseNamedType() {
405 std::string Name = Lex.getStrVal();
406 LocTy NameLoc = Lex.getLoc();
407 Lex.Lex(); // eat LocalVar.
409 if (ParseToken(lltok::equal, "expected '=' after name") ||
410 ParseToken(lltok::kw_type, "expected 'type' after name"))
413 Type *Result = nullptr;
414 if (ParseStructDefinition(NameLoc, Name,
415 NamedTypes[Name], Result)) return true;
417 if (!isa<StructType>(Result)) {
418 std::pair<Type*, LocTy> &Entry = NamedTypes[Name];
420 return Error(NameLoc, "non-struct types may not be recursive");
421 Entry.first = Result;
422 Entry.second = SMLoc();
429 /// ::= 'declare' FunctionHeader
430 bool LLParser::ParseDeclare() {
431 assert(Lex.getKind() == lltok::kw_declare);
434 std::vector<std::pair<unsigned, MDNode *>> MDs;
435 while (Lex.getKind() == lltok::MetadataVar) {
438 if (ParseMetadataAttachment(MDK, N))
440 MDs.push_back({MDK, N});
444 if (ParseFunctionHeader(F, false))
447 F->addMetadata(MD.first, *MD.second);
452 /// ::= 'define' FunctionHeader (!dbg !56)* '{' ...
453 bool LLParser::ParseDefine() {
454 assert(Lex.getKind() == lltok::kw_define);
458 return ParseFunctionHeader(F, true) ||
459 ParseOptionalFunctionMetadata(*F) ||
460 ParseFunctionBody(*F);
466 bool LLParser::ParseGlobalType(bool &IsConstant) {
467 if (Lex.getKind() == lltok::kw_constant)
469 else if (Lex.getKind() == lltok::kw_global)
473 return TokError("expected 'global' or 'constant'");
479 bool LLParser::ParseOptionalUnnamedAddr(
480 GlobalVariable::UnnamedAddr &UnnamedAddr) {
481 if (EatIfPresent(lltok::kw_unnamed_addr))
482 UnnamedAddr = GlobalValue::UnnamedAddr::Global;
483 else if (EatIfPresent(lltok::kw_local_unnamed_addr))
484 UnnamedAddr = GlobalValue::UnnamedAddr::Local;
486 UnnamedAddr = GlobalValue::UnnamedAddr::None;
490 /// ParseUnnamedGlobal:
491 /// OptionalVisibility (ALIAS | IFUNC) ...
492 /// OptionalLinkage OptionalVisibility OptionalDLLStorageClass
493 /// ... -> global variable
494 /// GlobalID '=' OptionalVisibility (ALIAS | IFUNC) ...
495 /// GlobalID '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
496 /// ... -> global variable
497 bool LLParser::ParseUnnamedGlobal() {
498 unsigned VarID = NumberedVals.size();
500 LocTy NameLoc = Lex.getLoc();
502 // Handle the GlobalID form.
503 if (Lex.getKind() == lltok::GlobalID) {
504 if (Lex.getUIntVal() != VarID)
505 return Error(Lex.getLoc(), "variable expected to be numbered '%" +
507 Lex.Lex(); // eat GlobalID;
509 if (ParseToken(lltok::equal, "expected '=' after name"))
514 unsigned Linkage, Visibility, DLLStorageClass;
515 GlobalVariable::ThreadLocalMode TLM;
516 GlobalVariable::UnnamedAddr UnnamedAddr;
517 if (ParseOptionalLinkage(Linkage, HasLinkage, Visibility, DLLStorageClass) ||
518 ParseOptionalThreadLocal(TLM) || ParseOptionalUnnamedAddr(UnnamedAddr))
521 if (Lex.getKind() != lltok::kw_alias && Lex.getKind() != lltok::kw_ifunc)
522 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility,
523 DLLStorageClass, TLM, UnnamedAddr);
525 return parseIndirectSymbol(Name, NameLoc, Linkage, Visibility,
526 DLLStorageClass, TLM, UnnamedAddr);
529 /// ParseNamedGlobal:
530 /// GlobalVar '=' OptionalVisibility (ALIAS | IFUNC) ...
531 /// GlobalVar '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
532 /// ... -> global variable
533 bool LLParser::ParseNamedGlobal() {
534 assert(Lex.getKind() == lltok::GlobalVar);
535 LocTy NameLoc = Lex.getLoc();
536 std::string Name = Lex.getStrVal();
540 unsigned Linkage, Visibility, DLLStorageClass;
541 GlobalVariable::ThreadLocalMode TLM;
542 GlobalVariable::UnnamedAddr UnnamedAddr;
543 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
544 ParseOptionalLinkage(Linkage, HasLinkage, Visibility, DLLStorageClass) ||
545 ParseOptionalThreadLocal(TLM) || ParseOptionalUnnamedAddr(UnnamedAddr))
548 if (Lex.getKind() != lltok::kw_alias && Lex.getKind() != lltok::kw_ifunc)
549 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility,
550 DLLStorageClass, TLM, UnnamedAddr);
552 return parseIndirectSymbol(Name, NameLoc, Linkage, Visibility,
553 DLLStorageClass, TLM, UnnamedAddr);
556 bool LLParser::parseComdat() {
557 assert(Lex.getKind() == lltok::ComdatVar);
558 std::string Name = Lex.getStrVal();
559 LocTy NameLoc = Lex.getLoc();
562 if (ParseToken(lltok::equal, "expected '=' here"))
565 if (ParseToken(lltok::kw_comdat, "expected comdat keyword"))
566 return TokError("expected comdat type");
568 Comdat::SelectionKind SK;
569 switch (Lex.getKind()) {
571 return TokError("unknown selection kind");
575 case lltok::kw_exactmatch:
576 SK = Comdat::ExactMatch;
578 case lltok::kw_largest:
579 SK = Comdat::Largest;
581 case lltok::kw_noduplicates:
582 SK = Comdat::NoDuplicates;
584 case lltok::kw_samesize:
585 SK = Comdat::SameSize;
590 // See if the comdat was forward referenced, if so, use the comdat.
591 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
592 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
593 if (I != ComdatSymTab.end() && !ForwardRefComdats.erase(Name))
594 return Error(NameLoc, "redefinition of comdat '$" + Name + "'");
597 if (I != ComdatSymTab.end())
600 C = M->getOrInsertComdat(Name);
601 C->setSelectionKind(SK);
607 // ::= '!' STRINGCONSTANT
608 bool LLParser::ParseMDString(MDString *&Result) {
610 if (ParseStringConstant(Str)) return true;
611 Result = MDString::get(Context, Str);
616 // ::= '!' MDNodeNumber
617 bool LLParser::ParseMDNodeID(MDNode *&Result) {
618 // !{ ..., !42, ... }
619 LocTy IDLoc = Lex.getLoc();
621 if (ParseUInt32(MID))
624 // If not a forward reference, just return it now.
625 if (NumberedMetadata.count(MID)) {
626 Result = NumberedMetadata[MID];
630 // Otherwise, create MDNode forward reference.
631 auto &FwdRef = ForwardRefMDNodes[MID];
632 FwdRef = std::make_pair(MDTuple::getTemporary(Context, None), IDLoc);
634 Result = FwdRef.first.get();
635 NumberedMetadata[MID].reset(Result);
639 /// ParseNamedMetadata:
640 /// !foo = !{ !1, !2 }
641 bool LLParser::ParseNamedMetadata() {
642 assert(Lex.getKind() == lltok::MetadataVar);
643 std::string Name = Lex.getStrVal();
646 if (ParseToken(lltok::equal, "expected '=' here") ||
647 ParseToken(lltok::exclaim, "Expected '!' here") ||
648 ParseToken(lltok::lbrace, "Expected '{' here"))
651 NamedMDNode *NMD = M->getOrInsertNamedMetadata(Name);
652 if (Lex.getKind() != lltok::rbrace)
654 if (ParseToken(lltok::exclaim, "Expected '!' here"))
658 if (ParseMDNodeID(N)) return true;
660 } while (EatIfPresent(lltok::comma));
662 return ParseToken(lltok::rbrace, "expected end of metadata node");
665 /// ParseStandaloneMetadata:
667 bool LLParser::ParseStandaloneMetadata() {
668 assert(Lex.getKind() == lltok::exclaim);
670 unsigned MetadataID = 0;
673 if (ParseUInt32(MetadataID) ||
674 ParseToken(lltok::equal, "expected '=' here"))
677 // Detect common error, from old metadata syntax.
678 if (Lex.getKind() == lltok::Type)
679 return TokError("unexpected type in metadata definition");
681 bool IsDistinct = EatIfPresent(lltok::kw_distinct);
682 if (Lex.getKind() == lltok::MetadataVar) {
683 if (ParseSpecializedMDNode(Init, IsDistinct))
685 } else if (ParseToken(lltok::exclaim, "Expected '!' here") ||
686 ParseMDTuple(Init, IsDistinct))
689 // See if this was forward referenced, if so, handle it.
690 auto FI = ForwardRefMDNodes.find(MetadataID);
691 if (FI != ForwardRefMDNodes.end()) {
692 FI->second.first->replaceAllUsesWith(Init);
693 ForwardRefMDNodes.erase(FI);
695 assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work");
697 if (NumberedMetadata.count(MetadataID))
698 return TokError("Metadata id is already used");
699 NumberedMetadata[MetadataID].reset(Init);
705 static bool isValidVisibilityForLinkage(unsigned V, unsigned L) {
706 return !GlobalValue::isLocalLinkage((GlobalValue::LinkageTypes)L) ||
707 (GlobalValue::VisibilityTypes)V == GlobalValue::DefaultVisibility;
710 /// parseIndirectSymbol:
711 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility
712 /// OptionalDLLStorageClass OptionalThreadLocal
713 /// OptionalUnnamedAddr 'alias|ifunc' IndirectSymbol
718 /// Everything through OptionalUnnamedAddr has already been parsed.
720 bool LLParser::parseIndirectSymbol(
721 const std::string &Name, LocTy NameLoc, unsigned L, unsigned Visibility,
722 unsigned DLLStorageClass, GlobalVariable::ThreadLocalMode TLM,
723 GlobalVariable::UnnamedAddr UnnamedAddr) {
725 if (Lex.getKind() == lltok::kw_alias)
727 else if (Lex.getKind() == lltok::kw_ifunc)
730 llvm_unreachable("Not an alias or ifunc!");
733 GlobalValue::LinkageTypes Linkage = (GlobalValue::LinkageTypes) L;
735 if(IsAlias && !GlobalAlias::isValidLinkage(Linkage))
736 return Error(NameLoc, "invalid linkage type for alias");
738 if (!isValidVisibilityForLinkage(Visibility, L))
739 return Error(NameLoc,
740 "symbol with local linkage must have default visibility");
743 LocTy ExplicitTypeLoc = Lex.getLoc();
745 ParseToken(lltok::comma, "expected comma after alias or ifunc's type"))
749 LocTy AliaseeLoc = Lex.getLoc();
750 if (Lex.getKind() != lltok::kw_bitcast &&
751 Lex.getKind() != lltok::kw_getelementptr &&
752 Lex.getKind() != lltok::kw_addrspacecast &&
753 Lex.getKind() != lltok::kw_inttoptr) {
754 if (ParseGlobalTypeAndValue(Aliasee))
757 // The bitcast dest type is not present, it is implied by the dest type.
761 if (ID.Kind != ValID::t_Constant)
762 return Error(AliaseeLoc, "invalid aliasee");
763 Aliasee = ID.ConstantVal;
766 Type *AliaseeType = Aliasee->getType();
767 auto *PTy = dyn_cast<PointerType>(AliaseeType);
769 return Error(AliaseeLoc, "An alias or ifunc must have pointer type");
770 unsigned AddrSpace = PTy->getAddressSpace();
772 if (IsAlias && Ty != PTy->getElementType())
775 "explicit pointee type doesn't match operand's pointee type");
777 if (!IsAlias && !PTy->getElementType()->isFunctionTy())
780 "explicit pointee type should be a function type");
782 GlobalValue *GVal = nullptr;
784 // See if the alias was forward referenced, if so, prepare to replace the
785 // forward reference.
787 GVal = M->getNamedValue(Name);
789 if (!ForwardRefVals.erase(Name))
790 return Error(NameLoc, "redefinition of global '@" + Name + "'");
793 auto I = ForwardRefValIDs.find(NumberedVals.size());
794 if (I != ForwardRefValIDs.end()) {
795 GVal = I->second.first;
796 ForwardRefValIDs.erase(I);
800 // Okay, create the alias but do not insert it into the module yet.
801 std::unique_ptr<GlobalIndirectSymbol> GA;
803 GA.reset(GlobalAlias::create(Ty, AddrSpace,
804 (GlobalValue::LinkageTypes)Linkage, Name,
805 Aliasee, /*Parent*/ nullptr));
807 GA.reset(GlobalIFunc::create(Ty, AddrSpace,
808 (GlobalValue::LinkageTypes)Linkage, Name,
809 Aliasee, /*Parent*/ nullptr));
810 GA->setThreadLocalMode(TLM);
811 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
812 GA->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
813 GA->setUnnamedAddr(UnnamedAddr);
816 NumberedVals.push_back(GA.get());
819 // Verify that types agree.
820 if (GVal->getType() != GA->getType())
823 "forward reference and definition of alias have different types");
825 // If they agree, just RAUW the old value with the alias and remove the
827 GVal->replaceAllUsesWith(GA.get());
828 GVal->eraseFromParent();
831 // Insert into the module, we know its name won't collide now.
833 M->getAliasList().push_back(cast<GlobalAlias>(GA.get()));
835 M->getIFuncList().push_back(cast<GlobalIFunc>(GA.get()));
836 assert(GA->getName() == Name && "Should not be a name conflict!");
838 // The module owns this now
845 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
846 /// OptionalThreadLocal OptionalUnnamedAddr OptionalAddrSpace
847 /// OptionalExternallyInitialized GlobalType Type Const
848 /// ::= OptionalLinkage OptionalVisibility OptionalDLLStorageClass
849 /// OptionalThreadLocal OptionalUnnamedAddr OptionalAddrSpace
850 /// OptionalExternallyInitialized GlobalType Type Const
852 /// Everything up to and including OptionalUnnamedAddr has been parsed
855 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
856 unsigned Linkage, bool HasLinkage,
857 unsigned Visibility, unsigned DLLStorageClass,
858 GlobalVariable::ThreadLocalMode TLM,
859 GlobalVariable::UnnamedAddr UnnamedAddr) {
860 if (!isValidVisibilityForLinkage(Visibility, Linkage))
861 return Error(NameLoc,
862 "symbol with local linkage must have default visibility");
865 bool IsConstant, IsExternallyInitialized;
866 LocTy IsExternallyInitializedLoc;
870 if (ParseOptionalAddrSpace(AddrSpace) ||
871 ParseOptionalToken(lltok::kw_externally_initialized,
872 IsExternallyInitialized,
873 &IsExternallyInitializedLoc) ||
874 ParseGlobalType(IsConstant) ||
875 ParseType(Ty, TyLoc))
878 // If the linkage is specified and is external, then no initializer is
880 Constant *Init = nullptr;
882 !GlobalValue::isValidDeclarationLinkage(
883 (GlobalValue::LinkageTypes)Linkage)) {
884 if (ParseGlobalValue(Ty, Init))
888 if (Ty->isFunctionTy() || !PointerType::isValidElementType(Ty))
889 return Error(TyLoc, "invalid type for global variable");
891 GlobalValue *GVal = nullptr;
893 // See if the global was forward referenced, if so, use the global.
895 GVal = M->getNamedValue(Name);
897 if (!ForwardRefVals.erase(Name))
898 return Error(NameLoc, "redefinition of global '@" + Name + "'");
901 auto I = ForwardRefValIDs.find(NumberedVals.size());
902 if (I != ForwardRefValIDs.end()) {
903 GVal = I->second.first;
904 ForwardRefValIDs.erase(I);
910 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, nullptr,
911 Name, nullptr, GlobalVariable::NotThreadLocal,
914 if (GVal->getValueType() != Ty)
916 "forward reference and definition of global have different types");
918 GV = cast<GlobalVariable>(GVal);
920 // Move the forward-reference to the correct spot in the module.
921 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
925 NumberedVals.push_back(GV);
927 // Set the parsed properties on the global.
929 GV->setInitializer(Init);
930 GV->setConstant(IsConstant);
931 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
932 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
933 GV->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
934 GV->setExternallyInitialized(IsExternallyInitialized);
935 GV->setThreadLocalMode(TLM);
936 GV->setUnnamedAddr(UnnamedAddr);
938 // Parse attributes on the global.
939 while (Lex.getKind() == lltok::comma) {
942 if (Lex.getKind() == lltok::kw_section) {
944 GV->setSection(Lex.getStrVal());
945 if (ParseToken(lltok::StringConstant, "expected global section string"))
947 } else if (Lex.getKind() == lltok::kw_align) {
949 if (ParseOptionalAlignment(Alignment)) return true;
950 GV->setAlignment(Alignment);
951 } else if (Lex.getKind() == lltok::MetadataVar) {
952 if (ParseGlobalObjectMetadataAttachment(*GV))
956 if (parseOptionalComdat(Name, C))
961 return TokError("unknown global variable property!");
968 /// ParseUnnamedAttrGrp
969 /// ::= 'attributes' AttrGrpID '=' '{' AttrValPair+ '}'
970 bool LLParser::ParseUnnamedAttrGrp() {
971 assert(Lex.getKind() == lltok::kw_attributes);
972 LocTy AttrGrpLoc = Lex.getLoc();
975 if (Lex.getKind() != lltok::AttrGrpID)
976 return TokError("expected attribute group id");
978 unsigned VarID = Lex.getUIntVal();
979 std::vector<unsigned> unused;
983 if (ParseToken(lltok::equal, "expected '=' here") ||
984 ParseToken(lltok::lbrace, "expected '{' here") ||
985 ParseFnAttributeValuePairs(NumberedAttrBuilders[VarID], unused, true,
987 ParseToken(lltok::rbrace, "expected end of attribute group"))
990 if (!NumberedAttrBuilders[VarID].hasAttributes())
991 return Error(AttrGrpLoc, "attribute group has no attributes");
996 /// ParseFnAttributeValuePairs
997 /// ::= <attr> | <attr> '=' <value>
998 bool LLParser::ParseFnAttributeValuePairs(AttrBuilder &B,
999 std::vector<unsigned> &FwdRefAttrGrps,
1000 bool inAttrGrp, LocTy &BuiltinLoc) {
1001 bool HaveError = false;
1006 lltok::Kind Token = Lex.getKind();
1007 if (Token == lltok::kw_builtin)
1008 BuiltinLoc = Lex.getLoc();
1011 if (!inAttrGrp) return HaveError;
1012 return Error(Lex.getLoc(), "unterminated attribute group");
1017 case lltok::AttrGrpID: {
1018 // Allow a function to reference an attribute group:
1020 // define void @foo() #1 { ... }
1024 "cannot have an attribute group reference in an attribute group");
1026 unsigned AttrGrpNum = Lex.getUIntVal();
1027 if (inAttrGrp) break;
1029 // Save the reference to the attribute group. We'll fill it in later.
1030 FwdRefAttrGrps.push_back(AttrGrpNum);
1033 // Target-dependent attributes:
1034 case lltok::StringConstant: {
1035 if (ParseStringAttribute(B))
1040 // Target-independent attributes:
1041 case lltok::kw_align: {
1042 // As a hack, we allow function alignment to be initially parsed as an
1043 // attribute on a function declaration/definition or added to an attribute
1044 // group and later moved to the alignment field.
1048 if (ParseToken(lltok::equal, "expected '=' here") ||
1049 ParseUInt32(Alignment))
1052 if (ParseOptionalAlignment(Alignment))
1055 B.addAlignmentAttr(Alignment);
1058 case lltok::kw_alignstack: {
1062 if (ParseToken(lltok::equal, "expected '=' here") ||
1063 ParseUInt32(Alignment))
1066 if (ParseOptionalStackAlignment(Alignment))
1069 B.addStackAlignmentAttr(Alignment);
1072 case lltok::kw_allocsize: {
1073 unsigned ElemSizeArg;
1074 Optional<unsigned> NumElemsArg;
1075 // inAttrGrp doesn't matter; we only support allocsize(a[, b])
1076 if (parseAllocSizeArguments(ElemSizeArg, NumElemsArg))
1078 B.addAllocSizeAttr(ElemSizeArg, NumElemsArg);
1081 case lltok::kw_alwaysinline: B.addAttribute(Attribute::AlwaysInline); break;
1082 case lltok::kw_argmemonly: B.addAttribute(Attribute::ArgMemOnly); break;
1083 case lltok::kw_builtin: B.addAttribute(Attribute::Builtin); break;
1084 case lltok::kw_cold: B.addAttribute(Attribute::Cold); break;
1085 case lltok::kw_convergent: B.addAttribute(Attribute::Convergent); break;
1086 case lltok::kw_inaccessiblememonly:
1087 B.addAttribute(Attribute::InaccessibleMemOnly); break;
1088 case lltok::kw_inaccessiblemem_or_argmemonly:
1089 B.addAttribute(Attribute::InaccessibleMemOrArgMemOnly); break;
1090 case lltok::kw_inlinehint: B.addAttribute(Attribute::InlineHint); break;
1091 case lltok::kw_jumptable: B.addAttribute(Attribute::JumpTable); break;
1092 case lltok::kw_minsize: B.addAttribute(Attribute::MinSize); break;
1093 case lltok::kw_naked: B.addAttribute(Attribute::Naked); break;
1094 case lltok::kw_nobuiltin: B.addAttribute(Attribute::NoBuiltin); break;
1095 case lltok::kw_noduplicate: B.addAttribute(Attribute::NoDuplicate); break;
1096 case lltok::kw_noimplicitfloat:
1097 B.addAttribute(Attribute::NoImplicitFloat); break;
1098 case lltok::kw_noinline: B.addAttribute(Attribute::NoInline); break;
1099 case lltok::kw_nonlazybind: B.addAttribute(Attribute::NonLazyBind); break;
1100 case lltok::kw_noredzone: B.addAttribute(Attribute::NoRedZone); break;
1101 case lltok::kw_noreturn: B.addAttribute(Attribute::NoReturn); break;
1102 case lltok::kw_norecurse: B.addAttribute(Attribute::NoRecurse); break;
1103 case lltok::kw_nounwind: B.addAttribute(Attribute::NoUnwind); break;
1104 case lltok::kw_optnone: B.addAttribute(Attribute::OptimizeNone); break;
1105 case lltok::kw_optsize: B.addAttribute(Attribute::OptimizeForSize); break;
1106 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1107 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1108 case lltok::kw_returns_twice:
1109 B.addAttribute(Attribute::ReturnsTwice); break;
1110 case lltok::kw_ssp: B.addAttribute(Attribute::StackProtect); break;
1111 case lltok::kw_sspreq: B.addAttribute(Attribute::StackProtectReq); break;
1112 case lltok::kw_sspstrong:
1113 B.addAttribute(Attribute::StackProtectStrong); break;
1114 case lltok::kw_safestack: B.addAttribute(Attribute::SafeStack); break;
1115 case lltok::kw_sanitize_address:
1116 B.addAttribute(Attribute::SanitizeAddress); break;
1117 case lltok::kw_sanitize_thread:
1118 B.addAttribute(Attribute::SanitizeThread); break;
1119 case lltok::kw_sanitize_memory:
1120 B.addAttribute(Attribute::SanitizeMemory); break;
1121 case lltok::kw_uwtable: B.addAttribute(Attribute::UWTable); break;
1122 case lltok::kw_writeonly: B.addAttribute(Attribute::WriteOnly); break;
1125 case lltok::kw_inreg:
1126 case lltok::kw_signext:
1127 case lltok::kw_zeroext:
1130 "invalid use of attribute on a function");
1132 case lltok::kw_byval:
1133 case lltok::kw_dereferenceable:
1134 case lltok::kw_dereferenceable_or_null:
1135 case lltok::kw_inalloca:
1136 case lltok::kw_nest:
1137 case lltok::kw_noalias:
1138 case lltok::kw_nocapture:
1139 case lltok::kw_nonnull:
1140 case lltok::kw_returned:
1141 case lltok::kw_sret:
1142 case lltok::kw_swifterror:
1143 case lltok::kw_swiftself:
1146 "invalid use of parameter-only attribute on a function");
1154 //===----------------------------------------------------------------------===//
1155 // GlobalValue Reference/Resolution Routines.
1156 //===----------------------------------------------------------------------===//
1158 static inline GlobalValue *createGlobalFwdRef(Module *M, PointerType *PTy,
1159 const std::string &Name) {
1160 if (auto *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1161 return Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
1163 return new GlobalVariable(*M, PTy->getElementType(), false,
1164 GlobalValue::ExternalWeakLinkage, nullptr, Name,
1165 nullptr, GlobalVariable::NotThreadLocal,
1166 PTy->getAddressSpace());
1169 /// GetGlobalVal - Get a value with the specified name or ID, creating a
1170 /// forward reference record if needed. This can return null if the value
1171 /// exists but does not have the right type.
1172 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
1174 PointerType *PTy = dyn_cast<PointerType>(Ty);
1176 Error(Loc, "global variable reference must have pointer type");
1180 // Look this name up in the normal function symbol table.
1182 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
1184 // If this is a forward reference for the value, see if we already created a
1185 // forward ref record.
1187 auto I = ForwardRefVals.find(Name);
1188 if (I != ForwardRefVals.end())
1189 Val = I->second.first;
1192 // If we have the value in the symbol table or fwd-ref table, return it.
1194 if (Val->getType() == Ty) return Val;
1195 Error(Loc, "'@" + Name + "' defined with type '" +
1196 getTypeString(Val->getType()) + "'");
1200 // Otherwise, create a new forward reference for this value and remember it.
1201 GlobalValue *FwdVal = createGlobalFwdRef(M, PTy, Name);
1202 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1206 GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
1207 PointerType *PTy = dyn_cast<PointerType>(Ty);
1209 Error(Loc, "global variable reference must have pointer type");
1213 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
1215 // If this is a forward reference for the value, see if we already created a
1216 // forward ref record.
1218 auto I = ForwardRefValIDs.find(ID);
1219 if (I != ForwardRefValIDs.end())
1220 Val = I->second.first;
1223 // If we have the value in the symbol table or fwd-ref table, return it.
1225 if (Val->getType() == Ty) return Val;
1226 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
1227 getTypeString(Val->getType()) + "'");
1231 // Otherwise, create a new forward reference for this value and remember it.
1232 GlobalValue *FwdVal = createGlobalFwdRef(M, PTy, "");
1233 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1237 //===----------------------------------------------------------------------===//
1238 // Comdat Reference/Resolution Routines.
1239 //===----------------------------------------------------------------------===//
1241 Comdat *LLParser::getComdat(const std::string &Name, LocTy Loc) {
1242 // Look this name up in the comdat symbol table.
1243 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
1244 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
1245 if (I != ComdatSymTab.end())
1248 // Otherwise, create a new forward reference for this value and remember it.
1249 Comdat *C = M->getOrInsertComdat(Name);
1250 ForwardRefComdats[Name] = Loc;
1254 //===----------------------------------------------------------------------===//
1256 //===----------------------------------------------------------------------===//
1258 /// ParseToken - If the current token has the specified kind, eat it and return
1259 /// success. Otherwise, emit the specified error and return failure.
1260 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
1261 if (Lex.getKind() != T)
1262 return TokError(ErrMsg);
1267 /// ParseStringConstant
1268 /// ::= StringConstant
1269 bool LLParser::ParseStringConstant(std::string &Result) {
1270 if (Lex.getKind() != lltok::StringConstant)
1271 return TokError("expected string constant");
1272 Result = Lex.getStrVal();
1279 bool LLParser::ParseUInt32(uint32_t &Val) {
1280 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1281 return TokError("expected integer");
1282 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
1283 if (Val64 != unsigned(Val64))
1284 return TokError("expected 32-bit integer (too large)");
1292 bool LLParser::ParseUInt64(uint64_t &Val) {
1293 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1294 return TokError("expected integer");
1295 Val = Lex.getAPSIntVal().getLimitedValue();
1301 /// := 'localdynamic'
1302 /// := 'initialexec'
1304 bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
1305 switch (Lex.getKind()) {
1307 return TokError("expected localdynamic, initialexec or localexec");
1308 case lltok::kw_localdynamic:
1309 TLM = GlobalVariable::LocalDynamicTLSModel;
1311 case lltok::kw_initialexec:
1312 TLM = GlobalVariable::InitialExecTLSModel;
1314 case lltok::kw_localexec:
1315 TLM = GlobalVariable::LocalExecTLSModel;
1323 /// ParseOptionalThreadLocal
1325 /// := 'thread_local'
1326 /// := 'thread_local' '(' tlsmodel ')'
1327 bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
1328 TLM = GlobalVariable::NotThreadLocal;
1329 if (!EatIfPresent(lltok::kw_thread_local))
1332 TLM = GlobalVariable::GeneralDynamicTLSModel;
1333 if (Lex.getKind() == lltok::lparen) {
1335 return ParseTLSModel(TLM) ||
1336 ParseToken(lltok::rparen, "expected ')' after thread local model");
1341 /// ParseOptionalAddrSpace
1343 /// := 'addrspace' '(' uint32 ')'
1344 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
1346 if (!EatIfPresent(lltok::kw_addrspace))
1348 return ParseToken(lltok::lparen, "expected '(' in address space") ||
1349 ParseUInt32(AddrSpace) ||
1350 ParseToken(lltok::rparen, "expected ')' in address space");
1353 /// ParseStringAttribute
1354 /// := StringConstant
1355 /// := StringConstant '=' StringConstant
1356 bool LLParser::ParseStringAttribute(AttrBuilder &B) {
1357 std::string Attr = Lex.getStrVal();
1360 if (EatIfPresent(lltok::equal) && ParseStringConstant(Val))
1362 B.addAttribute(Attr, Val);
1366 /// ParseOptionalParamAttrs - Parse a potentially empty list of parameter attributes.
1367 bool LLParser::ParseOptionalParamAttrs(AttrBuilder &B) {
1368 bool HaveError = false;
1373 lltok::Kind Token = Lex.getKind();
1375 default: // End of attributes.
1377 case lltok::StringConstant: {
1378 if (ParseStringAttribute(B))
1382 case lltok::kw_align: {
1384 if (ParseOptionalAlignment(Alignment))
1386 B.addAlignmentAttr(Alignment);
1389 case lltok::kw_byval: B.addAttribute(Attribute::ByVal); break;
1390 case lltok::kw_dereferenceable: {
1392 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1394 B.addDereferenceableAttr(Bytes);
1397 case lltok::kw_dereferenceable_or_null: {
1399 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1401 B.addDereferenceableOrNullAttr(Bytes);
1404 case lltok::kw_inalloca: B.addAttribute(Attribute::InAlloca); break;
1405 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1406 case lltok::kw_nest: B.addAttribute(Attribute::Nest); break;
1407 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1408 case lltok::kw_nocapture: B.addAttribute(Attribute::NoCapture); break;
1409 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1410 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1411 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1412 case lltok::kw_returned: B.addAttribute(Attribute::Returned); break;
1413 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1414 case lltok::kw_sret: B.addAttribute(Attribute::StructRet); break;
1415 case lltok::kw_swifterror: B.addAttribute(Attribute::SwiftError); break;
1416 case lltok::kw_swiftself: B.addAttribute(Attribute::SwiftSelf); break;
1417 case lltok::kw_writeonly: B.addAttribute(Attribute::WriteOnly); break;
1418 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1420 case lltok::kw_alignstack:
1421 case lltok::kw_alwaysinline:
1422 case lltok::kw_argmemonly:
1423 case lltok::kw_builtin:
1424 case lltok::kw_inlinehint:
1425 case lltok::kw_jumptable:
1426 case lltok::kw_minsize:
1427 case lltok::kw_naked:
1428 case lltok::kw_nobuiltin:
1429 case lltok::kw_noduplicate:
1430 case lltok::kw_noimplicitfloat:
1431 case lltok::kw_noinline:
1432 case lltok::kw_nonlazybind:
1433 case lltok::kw_noredzone:
1434 case lltok::kw_noreturn:
1435 case lltok::kw_nounwind:
1436 case lltok::kw_optnone:
1437 case lltok::kw_optsize:
1438 case lltok::kw_returns_twice:
1439 case lltok::kw_sanitize_address:
1440 case lltok::kw_sanitize_memory:
1441 case lltok::kw_sanitize_thread:
1443 case lltok::kw_sspreq:
1444 case lltok::kw_sspstrong:
1445 case lltok::kw_safestack:
1446 case lltok::kw_uwtable:
1447 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1455 /// ParseOptionalReturnAttrs - Parse a potentially empty list of return attributes.
1456 bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
1457 bool HaveError = false;
1462 lltok::Kind Token = Lex.getKind();
1464 default: // End of attributes.
1466 case lltok::StringConstant: {
1467 if (ParseStringAttribute(B))
1471 case lltok::kw_dereferenceable: {
1473 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1475 B.addDereferenceableAttr(Bytes);
1478 case lltok::kw_dereferenceable_or_null: {
1480 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1482 B.addDereferenceableOrNullAttr(Bytes);
1485 case lltok::kw_align: {
1487 if (ParseOptionalAlignment(Alignment))
1489 B.addAlignmentAttr(Alignment);
1492 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1493 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1494 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1495 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1496 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1499 case lltok::kw_byval:
1500 case lltok::kw_inalloca:
1501 case lltok::kw_nest:
1502 case lltok::kw_nocapture:
1503 case lltok::kw_returned:
1504 case lltok::kw_sret:
1505 case lltok::kw_swifterror:
1506 case lltok::kw_swiftself:
1507 HaveError |= Error(Lex.getLoc(), "invalid use of parameter-only attribute");
1510 case lltok::kw_alignstack:
1511 case lltok::kw_alwaysinline:
1512 case lltok::kw_argmemonly:
1513 case lltok::kw_builtin:
1514 case lltok::kw_cold:
1515 case lltok::kw_inlinehint:
1516 case lltok::kw_jumptable:
1517 case lltok::kw_minsize:
1518 case lltok::kw_naked:
1519 case lltok::kw_nobuiltin:
1520 case lltok::kw_noduplicate:
1521 case lltok::kw_noimplicitfloat:
1522 case lltok::kw_noinline:
1523 case lltok::kw_nonlazybind:
1524 case lltok::kw_noredzone:
1525 case lltok::kw_noreturn:
1526 case lltok::kw_nounwind:
1527 case lltok::kw_optnone:
1528 case lltok::kw_optsize:
1529 case lltok::kw_returns_twice:
1530 case lltok::kw_sanitize_address:
1531 case lltok::kw_sanitize_memory:
1532 case lltok::kw_sanitize_thread:
1534 case lltok::kw_sspreq:
1535 case lltok::kw_sspstrong:
1536 case lltok::kw_safestack:
1537 case lltok::kw_uwtable:
1538 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1541 case lltok::kw_readnone:
1542 case lltok::kw_readonly:
1543 HaveError |= Error(Lex.getLoc(), "invalid use of attribute on return type");
1550 static unsigned parseOptionalLinkageAux(lltok::Kind Kind, bool &HasLinkage) {
1555 return GlobalValue::ExternalLinkage;
1556 case lltok::kw_private:
1557 return GlobalValue::PrivateLinkage;
1558 case lltok::kw_internal:
1559 return GlobalValue::InternalLinkage;
1560 case lltok::kw_weak:
1561 return GlobalValue::WeakAnyLinkage;
1562 case lltok::kw_weak_odr:
1563 return GlobalValue::WeakODRLinkage;
1564 case lltok::kw_linkonce:
1565 return GlobalValue::LinkOnceAnyLinkage;
1566 case lltok::kw_linkonce_odr:
1567 return GlobalValue::LinkOnceODRLinkage;
1568 case lltok::kw_available_externally:
1569 return GlobalValue::AvailableExternallyLinkage;
1570 case lltok::kw_appending:
1571 return GlobalValue::AppendingLinkage;
1572 case lltok::kw_common:
1573 return GlobalValue::CommonLinkage;
1574 case lltok::kw_extern_weak:
1575 return GlobalValue::ExternalWeakLinkage;
1576 case lltok::kw_external:
1577 return GlobalValue::ExternalLinkage;
1581 /// ParseOptionalLinkage
1588 /// ::= 'linkonce_odr'
1589 /// ::= 'available_externally'
1592 /// ::= 'extern_weak'
1594 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage,
1595 unsigned &Visibility,
1596 unsigned &DLLStorageClass) {
1597 Res = parseOptionalLinkageAux(Lex.getKind(), HasLinkage);
1600 ParseOptionalVisibility(Visibility);
1601 ParseOptionalDLLStorageClass(DLLStorageClass);
1605 /// ParseOptionalVisibility
1611 void LLParser::ParseOptionalVisibility(unsigned &Res) {
1612 switch (Lex.getKind()) {
1614 Res = GlobalValue::DefaultVisibility;
1616 case lltok::kw_default:
1617 Res = GlobalValue::DefaultVisibility;
1619 case lltok::kw_hidden:
1620 Res = GlobalValue::HiddenVisibility;
1622 case lltok::kw_protected:
1623 Res = GlobalValue::ProtectedVisibility;
1629 /// ParseOptionalDLLStorageClass
1634 void LLParser::ParseOptionalDLLStorageClass(unsigned &Res) {
1635 switch (Lex.getKind()) {
1637 Res = GlobalValue::DefaultStorageClass;
1639 case lltok::kw_dllimport:
1640 Res = GlobalValue::DLLImportStorageClass;
1642 case lltok::kw_dllexport:
1643 Res = GlobalValue::DLLExportStorageClass;
1649 /// ParseOptionalCallingConv
1653 /// ::= 'intel_ocl_bicc'
1655 /// ::= 'x86_stdcallcc'
1656 /// ::= 'x86_fastcallcc'
1657 /// ::= 'x86_thiscallcc'
1658 /// ::= 'x86_vectorcallcc'
1659 /// ::= 'arm_apcscc'
1660 /// ::= 'arm_aapcscc'
1661 /// ::= 'arm_aapcs_vfpcc'
1662 /// ::= 'msp430_intrcc'
1663 /// ::= 'avr_intrcc'
1664 /// ::= 'avr_signalcc'
1665 /// ::= 'ptx_kernel'
1666 /// ::= 'ptx_device'
1668 /// ::= 'spir_kernel'
1669 /// ::= 'x86_64_sysvcc'
1670 /// ::= 'x86_64_win64cc'
1671 /// ::= 'webkit_jscc'
1673 /// ::= 'preserve_mostcc'
1674 /// ::= 'preserve_allcc'
1677 /// ::= 'x86_intrcc'
1680 /// ::= 'cxx_fast_tlscc'
1682 /// ::= 'amdgpu_tcs'
1683 /// ::= 'amdgpu_tes'
1687 /// ::= 'amdgpu_kernel'
1690 bool LLParser::ParseOptionalCallingConv(unsigned &CC) {
1691 switch (Lex.getKind()) {
1692 default: CC = CallingConv::C; return false;
1693 case lltok::kw_ccc: CC = CallingConv::C; break;
1694 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1695 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1696 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1697 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1698 case lltok::kw_x86_regcallcc: CC = CallingConv::X86_RegCall; break;
1699 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1700 case lltok::kw_x86_vectorcallcc:CC = CallingConv::X86_VectorCall; break;
1701 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1702 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1703 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1704 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1705 case lltok::kw_avr_intrcc: CC = CallingConv::AVR_INTR; break;
1706 case lltok::kw_avr_signalcc: CC = CallingConv::AVR_SIGNAL; break;
1707 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1708 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1709 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1710 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1711 case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1712 case lltok::kw_x86_64_sysvcc: CC = CallingConv::X86_64_SysV; break;
1713 case lltok::kw_x86_64_win64cc: CC = CallingConv::X86_64_Win64; break;
1714 case lltok::kw_webkit_jscc: CC = CallingConv::WebKit_JS; break;
1715 case lltok::kw_anyregcc: CC = CallingConv::AnyReg; break;
1716 case lltok::kw_preserve_mostcc:CC = CallingConv::PreserveMost; break;
1717 case lltok::kw_preserve_allcc: CC = CallingConv::PreserveAll; break;
1718 case lltok::kw_ghccc: CC = CallingConv::GHC; break;
1719 case lltok::kw_swiftcc: CC = CallingConv::Swift; break;
1720 case lltok::kw_x86_intrcc: CC = CallingConv::X86_INTR; break;
1721 case lltok::kw_hhvmcc: CC = CallingConv::HHVM; break;
1722 case lltok::kw_hhvm_ccc: CC = CallingConv::HHVM_C; break;
1723 case lltok::kw_cxx_fast_tlscc: CC = CallingConv::CXX_FAST_TLS; break;
1724 case lltok::kw_amdgpu_vs: CC = CallingConv::AMDGPU_VS; break;
1725 case lltok::kw_amdgpu_gs: CC = CallingConv::AMDGPU_GS; break;
1726 case lltok::kw_amdgpu_ps: CC = CallingConv::AMDGPU_PS; break;
1727 case lltok::kw_amdgpu_cs: CC = CallingConv::AMDGPU_CS; break;
1728 case lltok::kw_amdgpu_kernel: CC = CallingConv::AMDGPU_KERNEL; break;
1729 case lltok::kw_cc: {
1731 return ParseUInt32(CC);
1739 /// ParseMetadataAttachment
1741 bool LLParser::ParseMetadataAttachment(unsigned &Kind, MDNode *&MD) {
1742 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata attachment");
1744 std::string Name = Lex.getStrVal();
1745 Kind = M->getMDKindID(Name);
1748 return ParseMDNode(MD);
1751 /// ParseInstructionMetadata
1752 /// ::= !dbg !42 (',' !dbg !57)*
1753 bool LLParser::ParseInstructionMetadata(Instruction &Inst) {
1755 if (Lex.getKind() != lltok::MetadataVar)
1756 return TokError("expected metadata after comma");
1760 if (ParseMetadataAttachment(MDK, N))
1763 Inst.setMetadata(MDK, N);
1764 if (MDK == LLVMContext::MD_tbaa)
1765 InstsWithTBAATag.push_back(&Inst);
1767 // If this is the end of the list, we're done.
1768 } while (EatIfPresent(lltok::comma));
1772 /// ParseGlobalObjectMetadataAttachment
1774 bool LLParser::ParseGlobalObjectMetadataAttachment(GlobalObject &GO) {
1777 if (ParseMetadataAttachment(MDK, N))
1780 GO.addMetadata(MDK, *N);
1784 /// ParseOptionalFunctionMetadata
1786 bool LLParser::ParseOptionalFunctionMetadata(Function &F) {
1787 while (Lex.getKind() == lltok::MetadataVar)
1788 if (ParseGlobalObjectMetadataAttachment(F))
1793 /// ParseOptionalAlignment
1796 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1798 if (!EatIfPresent(lltok::kw_align))
1800 LocTy AlignLoc = Lex.getLoc();
1801 if (ParseUInt32(Alignment)) return true;
1802 if (!isPowerOf2_32(Alignment))
1803 return Error(AlignLoc, "alignment is not a power of two");
1804 if (Alignment > Value::MaximumAlignment)
1805 return Error(AlignLoc, "huge alignments are not supported yet");
1809 /// ParseOptionalDerefAttrBytes
1811 /// ::= AttrKind '(' 4 ')'
1813 /// where AttrKind is either 'dereferenceable' or 'dereferenceable_or_null'.
1814 bool LLParser::ParseOptionalDerefAttrBytes(lltok::Kind AttrKind,
1816 assert((AttrKind == lltok::kw_dereferenceable ||
1817 AttrKind == lltok::kw_dereferenceable_or_null) &&
1821 if (!EatIfPresent(AttrKind))
1823 LocTy ParenLoc = Lex.getLoc();
1824 if (!EatIfPresent(lltok::lparen))
1825 return Error(ParenLoc, "expected '('");
1826 LocTy DerefLoc = Lex.getLoc();
1827 if (ParseUInt64(Bytes)) return true;
1828 ParenLoc = Lex.getLoc();
1829 if (!EatIfPresent(lltok::rparen))
1830 return Error(ParenLoc, "expected ')'");
1832 return Error(DerefLoc, "dereferenceable bytes must be non-zero");
1836 /// ParseOptionalCommaAlign
1840 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1842 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1843 bool &AteExtraComma) {
1844 AteExtraComma = false;
1845 while (EatIfPresent(lltok::comma)) {
1846 // Metadata at the end is an early exit.
1847 if (Lex.getKind() == lltok::MetadataVar) {
1848 AteExtraComma = true;
1852 if (Lex.getKind() != lltok::kw_align)
1853 return Error(Lex.getLoc(), "expected metadata or 'align'");
1855 if (ParseOptionalAlignment(Alignment)) return true;
1861 bool LLParser::parseAllocSizeArguments(unsigned &BaseSizeArg,
1862 Optional<unsigned> &HowManyArg) {
1865 auto StartParen = Lex.getLoc();
1866 if (!EatIfPresent(lltok::lparen))
1867 return Error(StartParen, "expected '('");
1869 if (ParseUInt32(BaseSizeArg))
1872 if (EatIfPresent(lltok::comma)) {
1873 auto HowManyAt = Lex.getLoc();
1875 if (ParseUInt32(HowMany))
1877 if (HowMany == BaseSizeArg)
1878 return Error(HowManyAt,
1879 "'allocsize' indices can't refer to the same parameter");
1880 HowManyArg = HowMany;
1884 auto EndParen = Lex.getLoc();
1885 if (!EatIfPresent(lltok::rparen))
1886 return Error(EndParen, "expected ')'");
1890 /// ParseScopeAndOrdering
1891 /// if isAtomic: ::= 'singlethread'? AtomicOrdering
1894 /// This sets Scope and Ordering to the parsed values.
1895 bool LLParser::ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope,
1896 AtomicOrdering &Ordering) {
1900 Scope = CrossThread;
1901 if (EatIfPresent(lltok::kw_singlethread))
1902 Scope = SingleThread;
1904 return ParseOrdering(Ordering);
1908 /// ::= AtomicOrdering
1910 /// This sets Ordering to the parsed value.
1911 bool LLParser::ParseOrdering(AtomicOrdering &Ordering) {
1912 switch (Lex.getKind()) {
1913 default: return TokError("Expected ordering on atomic instruction");
1914 case lltok::kw_unordered: Ordering = AtomicOrdering::Unordered; break;
1915 case lltok::kw_monotonic: Ordering = AtomicOrdering::Monotonic; break;
1916 // Not specified yet:
1917 // case lltok::kw_consume: Ordering = AtomicOrdering::Consume; break;
1918 case lltok::kw_acquire: Ordering = AtomicOrdering::Acquire; break;
1919 case lltok::kw_release: Ordering = AtomicOrdering::Release; break;
1920 case lltok::kw_acq_rel: Ordering = AtomicOrdering::AcquireRelease; break;
1921 case lltok::kw_seq_cst:
1922 Ordering = AtomicOrdering::SequentiallyConsistent;
1929 /// ParseOptionalStackAlignment
1931 /// ::= 'alignstack' '(' 4 ')'
1932 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1934 if (!EatIfPresent(lltok::kw_alignstack))
1936 LocTy ParenLoc = Lex.getLoc();
1937 if (!EatIfPresent(lltok::lparen))
1938 return Error(ParenLoc, "expected '('");
1939 LocTy AlignLoc = Lex.getLoc();
1940 if (ParseUInt32(Alignment)) return true;
1941 ParenLoc = Lex.getLoc();
1942 if (!EatIfPresent(lltok::rparen))
1943 return Error(ParenLoc, "expected ')'");
1944 if (!isPowerOf2_32(Alignment))
1945 return Error(AlignLoc, "stack alignment is not a power of two");
1949 /// ParseIndexList - This parses the index list for an insert/extractvalue
1950 /// instruction. This sets AteExtraComma in the case where we eat an extra
1951 /// comma at the end of the line and find that it is followed by metadata.
1952 /// Clients that don't allow metadata can call the version of this function that
1953 /// only takes one argument.
1956 /// ::= (',' uint32)+
1958 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1959 bool &AteExtraComma) {
1960 AteExtraComma = false;
1962 if (Lex.getKind() != lltok::comma)
1963 return TokError("expected ',' as start of index list");
1965 while (EatIfPresent(lltok::comma)) {
1966 if (Lex.getKind() == lltok::MetadataVar) {
1967 if (Indices.empty()) return TokError("expected index");
1968 AteExtraComma = true;
1972 if (ParseUInt32(Idx)) return true;
1973 Indices.push_back(Idx);
1979 //===----------------------------------------------------------------------===//
1981 //===----------------------------------------------------------------------===//
1983 /// ParseType - Parse a type.
1984 bool LLParser::ParseType(Type *&Result, const Twine &Msg, bool AllowVoid) {
1985 SMLoc TypeLoc = Lex.getLoc();
1986 switch (Lex.getKind()) {
1988 return TokError(Msg);
1990 // Type ::= 'float' | 'void' (etc)
1991 Result = Lex.getTyVal();
1995 // Type ::= StructType
1996 if (ParseAnonStructType(Result, false))
1999 case lltok::lsquare:
2000 // Type ::= '[' ... ']'
2001 Lex.Lex(); // eat the lsquare.
2002 if (ParseArrayVectorType(Result, false))
2005 case lltok::less: // Either vector or packed struct.
2006 // Type ::= '<' ... '>'
2008 if (Lex.getKind() == lltok::lbrace) {
2009 if (ParseAnonStructType(Result, true) ||
2010 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
2012 } else if (ParseArrayVectorType(Result, true))
2015 case lltok::LocalVar: {
2017 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
2019 // If the type hasn't been defined yet, create a forward definition and
2020 // remember where that forward def'n was seen (in case it never is defined).
2022 Entry.first = StructType::create(Context, Lex.getStrVal());
2023 Entry.second = Lex.getLoc();
2025 Result = Entry.first;
2030 case lltok::LocalVarID: {
2032 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
2034 // If the type hasn't been defined yet, create a forward definition and
2035 // remember where that forward def'n was seen (in case it never is defined).
2037 Entry.first = StructType::create(Context);
2038 Entry.second = Lex.getLoc();
2040 Result = Entry.first;
2046 // Parse the type suffixes.
2048 switch (Lex.getKind()) {
2051 if (!AllowVoid && Result->isVoidTy())
2052 return Error(TypeLoc, "void type only allowed for function results");
2055 // Type ::= Type '*'
2057 if (Result->isLabelTy())
2058 return TokError("basic block pointers are invalid");
2059 if (Result->isVoidTy())
2060 return TokError("pointers to void are invalid - use i8* instead");
2061 if (!PointerType::isValidElementType(Result))
2062 return TokError("pointer to this type is invalid");
2063 Result = PointerType::getUnqual(Result);
2067 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
2068 case lltok::kw_addrspace: {
2069 if (Result->isLabelTy())
2070 return TokError("basic block pointers are invalid");
2071 if (Result->isVoidTy())
2072 return TokError("pointers to void are invalid; use i8* instead");
2073 if (!PointerType::isValidElementType(Result))
2074 return TokError("pointer to this type is invalid");
2076 if (ParseOptionalAddrSpace(AddrSpace) ||
2077 ParseToken(lltok::star, "expected '*' in address space"))
2080 Result = PointerType::get(Result, AddrSpace);
2084 /// Types '(' ArgTypeListI ')' OptFuncAttrs
2086 if (ParseFunctionType(Result))
2093 /// ParseParameterList
2095 /// ::= '(' Arg (',' Arg)* ')'
2097 /// ::= Type OptionalAttributes Value OptionalAttributes
2098 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
2099 PerFunctionState &PFS, bool IsMustTailCall,
2100 bool InVarArgsFunc) {
2101 if (ParseToken(lltok::lparen, "expected '(' in call"))
2104 unsigned AttrIndex = 1;
2105 while (Lex.getKind() != lltok::rparen) {
2106 // If this isn't the first argument, we need a comma.
2107 if (!ArgList.empty() &&
2108 ParseToken(lltok::comma, "expected ',' in argument list"))
2111 // Parse an ellipsis if this is a musttail call in a variadic function.
2112 if (Lex.getKind() == lltok::dotdotdot) {
2113 const char *Msg = "unexpected ellipsis in argument list for ";
2114 if (!IsMustTailCall)
2115 return TokError(Twine(Msg) + "non-musttail call");
2117 return TokError(Twine(Msg) + "musttail call in non-varargs function");
2118 Lex.Lex(); // Lex the '...', it is purely for readability.
2119 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
2122 // Parse the argument.
2124 Type *ArgTy = nullptr;
2125 AttrBuilder ArgAttrs;
2127 if (ParseType(ArgTy, ArgLoc))
2130 if (ArgTy->isMetadataTy()) {
2131 if (ParseMetadataAsValue(V, PFS))
2134 // Otherwise, handle normal operands.
2135 if (ParseOptionalParamAttrs(ArgAttrs) || ParseValue(ArgTy, V, PFS))
2138 ArgList.push_back(ParamInfo(ArgLoc, V, AttributeSet::get(V->getContext(),
2143 if (IsMustTailCall && InVarArgsFunc)
2144 return TokError("expected '...' at end of argument list for musttail call "
2145 "in varargs function");
2147 Lex.Lex(); // Lex the ')'.
2151 /// ParseOptionalOperandBundles
2153 /// ::= '[' OperandBundle [, OperandBundle ]* ']'
2156 /// ::= bundle-tag '(' ')'
2157 /// ::= bundle-tag '(' Type Value [, Type Value ]* ')'
2159 /// bundle-tag ::= String Constant
2160 bool LLParser::ParseOptionalOperandBundles(
2161 SmallVectorImpl<OperandBundleDef> &BundleList, PerFunctionState &PFS) {
2162 LocTy BeginLoc = Lex.getLoc();
2163 if (!EatIfPresent(lltok::lsquare))
2166 while (Lex.getKind() != lltok::rsquare) {
2167 // If this isn't the first operand bundle, we need a comma.
2168 if (!BundleList.empty() &&
2169 ParseToken(lltok::comma, "expected ',' in input list"))
2173 if (ParseStringConstant(Tag))
2176 if (ParseToken(lltok::lparen, "expected '(' in operand bundle"))
2179 std::vector<Value *> Inputs;
2180 while (Lex.getKind() != lltok::rparen) {
2181 // If this isn't the first input, we need a comma.
2182 if (!Inputs.empty() &&
2183 ParseToken(lltok::comma, "expected ',' in input list"))
2187 Value *Input = nullptr;
2188 if (ParseType(Ty) || ParseValue(Ty, Input, PFS))
2190 Inputs.push_back(Input);
2193 BundleList.emplace_back(std::move(Tag), std::move(Inputs));
2195 Lex.Lex(); // Lex the ')'.
2198 if (BundleList.empty())
2199 return Error(BeginLoc, "operand bundle set must not be empty");
2201 Lex.Lex(); // Lex the ']'.
2205 /// ParseArgumentList - Parse the argument list for a function type or function
2207 /// ::= '(' ArgTypeListI ')'
2211 /// ::= ArgTypeList ',' '...'
2212 /// ::= ArgType (',' ArgType)*
2214 bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
2217 assert(Lex.getKind() == lltok::lparen);
2218 Lex.Lex(); // eat the (.
2220 if (Lex.getKind() == lltok::rparen) {
2222 } else if (Lex.getKind() == lltok::dotdotdot) {
2226 LocTy TypeLoc = Lex.getLoc();
2227 Type *ArgTy = nullptr;
2231 if (ParseType(ArgTy) ||
2232 ParseOptionalParamAttrs(Attrs)) return true;
2234 if (ArgTy->isVoidTy())
2235 return Error(TypeLoc, "argument can not have void type");
2237 if (Lex.getKind() == lltok::LocalVar) {
2238 Name = Lex.getStrVal();
2242 if (!FunctionType::isValidArgumentType(ArgTy))
2243 return Error(TypeLoc, "invalid type for function argument");
2245 unsigned AttrIndex = 1;
2246 ArgList.emplace_back(TypeLoc, ArgTy, AttributeSet::get(ArgTy->getContext(),
2247 AttrIndex++, Attrs),
2250 while (EatIfPresent(lltok::comma)) {
2251 // Handle ... at end of arg list.
2252 if (EatIfPresent(lltok::dotdotdot)) {
2257 // Otherwise must be an argument type.
2258 TypeLoc = Lex.getLoc();
2259 if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
2261 if (ArgTy->isVoidTy())
2262 return Error(TypeLoc, "argument can not have void type");
2264 if (Lex.getKind() == lltok::LocalVar) {
2265 Name = Lex.getStrVal();
2271 if (!ArgTy->isFirstClassType())
2272 return Error(TypeLoc, "invalid type for function argument");
2274 ArgList.emplace_back(
2276 AttributeSet::get(ArgTy->getContext(), AttrIndex++, Attrs),
2281 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
2284 /// ParseFunctionType
2285 /// ::= Type ArgumentList OptionalAttrs
2286 bool LLParser::ParseFunctionType(Type *&Result) {
2287 assert(Lex.getKind() == lltok::lparen);
2289 if (!FunctionType::isValidReturnType(Result))
2290 return TokError("invalid function return type");
2292 SmallVector<ArgInfo, 8> ArgList;
2294 if (ParseArgumentList(ArgList, isVarArg))
2297 // Reject names on the arguments lists.
2298 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2299 if (!ArgList[i].Name.empty())
2300 return Error(ArgList[i].Loc, "argument name invalid in function type");
2301 if (ArgList[i].Attrs.hasAttributes(i + 1))
2302 return Error(ArgList[i].Loc,
2303 "argument attributes invalid in function type");
2306 SmallVector<Type*, 16> ArgListTy;
2307 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
2308 ArgListTy.push_back(ArgList[i].Ty);
2310 Result = FunctionType::get(Result, ArgListTy, isVarArg);
2314 /// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
2316 bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
2317 SmallVector<Type*, 8> Elts;
2318 if (ParseStructBody(Elts)) return true;
2320 Result = StructType::get(Context, Elts, Packed);
2324 /// ParseStructDefinition - Parse a struct in a 'type' definition.
2325 bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
2326 std::pair<Type*, LocTy> &Entry,
2328 // If the type was already defined, diagnose the redefinition.
2329 if (Entry.first && !Entry.second.isValid())
2330 return Error(TypeLoc, "redefinition of type");
2332 // If we have opaque, just return without filling in the definition for the
2333 // struct. This counts as a definition as far as the .ll file goes.
2334 if (EatIfPresent(lltok::kw_opaque)) {
2335 // This type is being defined, so clear the location to indicate this.
2336 Entry.second = SMLoc();
2338 // If this type number has never been uttered, create it.
2340 Entry.first = StructType::create(Context, Name);
2341 ResultTy = Entry.first;
2345 // If the type starts with '<', then it is either a packed struct or a vector.
2346 bool isPacked = EatIfPresent(lltok::less);
2348 // If we don't have a struct, then we have a random type alias, which we
2349 // accept for compatibility with old files. These types are not allowed to be
2350 // forward referenced and not allowed to be recursive.
2351 if (Lex.getKind() != lltok::lbrace) {
2353 return Error(TypeLoc, "forward references to non-struct type");
2357 return ParseArrayVectorType(ResultTy, true);
2358 return ParseType(ResultTy);
2361 // This type is being defined, so clear the location to indicate this.
2362 Entry.second = SMLoc();
2364 // If this type number has never been uttered, create it.
2366 Entry.first = StructType::create(Context, Name);
2368 StructType *STy = cast<StructType>(Entry.first);
2370 SmallVector<Type*, 8> Body;
2371 if (ParseStructBody(Body) ||
2372 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
2375 STy->setBody(Body, isPacked);
2380 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
2383 /// ::= '{' Type (',' Type)* '}'
2384 /// ::= '<' '{' '}' '>'
2385 /// ::= '<' '{' Type (',' Type)* '}' '>'
2386 bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
2387 assert(Lex.getKind() == lltok::lbrace);
2388 Lex.Lex(); // Consume the '{'
2390 // Handle the empty struct.
2391 if (EatIfPresent(lltok::rbrace))
2394 LocTy EltTyLoc = Lex.getLoc();
2396 if (ParseType(Ty)) return true;
2399 if (!StructType::isValidElementType(Ty))
2400 return Error(EltTyLoc, "invalid element type for struct");
2402 while (EatIfPresent(lltok::comma)) {
2403 EltTyLoc = Lex.getLoc();
2404 if (ParseType(Ty)) return true;
2406 if (!StructType::isValidElementType(Ty))
2407 return Error(EltTyLoc, "invalid element type for struct");
2412 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
2415 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
2416 /// token has already been consumed.
2418 /// ::= '[' APSINTVAL 'x' Types ']'
2419 /// ::= '<' APSINTVAL 'x' Types '>'
2420 bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
2421 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
2422 Lex.getAPSIntVal().getBitWidth() > 64)
2423 return TokError("expected number in address space");
2425 LocTy SizeLoc = Lex.getLoc();
2426 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
2429 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
2432 LocTy TypeLoc = Lex.getLoc();
2433 Type *EltTy = nullptr;
2434 if (ParseType(EltTy)) return true;
2436 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
2437 "expected end of sequential type"))
2442 return Error(SizeLoc, "zero element vector is illegal");
2443 if ((unsigned)Size != Size)
2444 return Error(SizeLoc, "size too large for vector");
2445 if (!VectorType::isValidElementType(EltTy))
2446 return Error(TypeLoc, "invalid vector element type");
2447 Result = VectorType::get(EltTy, unsigned(Size));
2449 if (!ArrayType::isValidElementType(EltTy))
2450 return Error(TypeLoc, "invalid array element type");
2451 Result = ArrayType::get(EltTy, Size);
2456 //===----------------------------------------------------------------------===//
2457 // Function Semantic Analysis.
2458 //===----------------------------------------------------------------------===//
2460 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
2462 : P(p), F(f), FunctionNumber(functionNumber) {
2464 // Insert unnamed arguments into the NumberedVals list.
2465 for (Argument &A : F.args())
2467 NumberedVals.push_back(&A);
2470 LLParser::PerFunctionState::~PerFunctionState() {
2471 // If there were any forward referenced non-basicblock values, delete them.
2473 for (const auto &P : ForwardRefVals) {
2474 if (isa<BasicBlock>(P.second.first))
2476 P.second.first->replaceAllUsesWith(
2477 UndefValue::get(P.second.first->getType()));
2478 delete P.second.first;
2481 for (const auto &P : ForwardRefValIDs) {
2482 if (isa<BasicBlock>(P.second.first))
2484 P.second.first->replaceAllUsesWith(
2485 UndefValue::get(P.second.first->getType()));
2486 delete P.second.first;
2490 bool LLParser::PerFunctionState::FinishFunction() {
2491 if (!ForwardRefVals.empty())
2492 return P.Error(ForwardRefVals.begin()->second.second,
2493 "use of undefined value '%" + ForwardRefVals.begin()->first +
2495 if (!ForwardRefValIDs.empty())
2496 return P.Error(ForwardRefValIDs.begin()->second.second,
2497 "use of undefined value '%" +
2498 Twine(ForwardRefValIDs.begin()->first) + "'");
2502 /// GetVal - Get a value with the specified name or ID, creating a
2503 /// forward reference record if needed. This can return null if the value
2504 /// exists but does not have the right type.
2505 Value *LLParser::PerFunctionState::GetVal(const std::string &Name, Type *Ty,
2507 // Look this name up in the normal function symbol table.
2508 Value *Val = F.getValueSymbolTable()->lookup(Name);
2510 // If this is a forward reference for the value, see if we already created a
2511 // forward ref record.
2513 auto I = ForwardRefVals.find(Name);
2514 if (I != ForwardRefVals.end())
2515 Val = I->second.first;
2518 // If we have the value in the symbol table or fwd-ref table, return it.
2520 if (Val->getType() == Ty) return Val;
2521 if (Ty->isLabelTy())
2522 P.Error(Loc, "'%" + Name + "' is not a basic block");
2524 P.Error(Loc, "'%" + Name + "' defined with type '" +
2525 getTypeString(Val->getType()) + "'");
2529 // Don't make placeholders with invalid type.
2530 if (!Ty->isFirstClassType()) {
2531 P.Error(Loc, "invalid use of a non-first-class type");
2535 // Otherwise, create a new forward reference for this value and remember it.
2537 if (Ty->isLabelTy()) {
2538 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2540 FwdVal = new Argument(Ty, Name);
2543 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2547 Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty, LocTy Loc) {
2548 // Look this name up in the normal function symbol table.
2549 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
2551 // If this is a forward reference for the value, see if we already created a
2552 // forward ref record.
2554 auto I = ForwardRefValIDs.find(ID);
2555 if (I != ForwardRefValIDs.end())
2556 Val = I->second.first;
2559 // If we have the value in the symbol table or fwd-ref table, return it.
2561 if (Val->getType() == Ty) return Val;
2562 if (Ty->isLabelTy())
2563 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
2565 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
2566 getTypeString(Val->getType()) + "'");
2570 if (!Ty->isFirstClassType()) {
2571 P.Error(Loc, "invalid use of a non-first-class type");
2575 // Otherwise, create a new forward reference for this value and remember it.
2577 if (Ty->isLabelTy()) {
2578 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2580 FwdVal = new Argument(Ty);
2583 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2587 /// SetInstName - After an instruction is parsed and inserted into its
2588 /// basic block, this installs its name.
2589 bool LLParser::PerFunctionState::SetInstName(int NameID,
2590 const std::string &NameStr,
2591 LocTy NameLoc, Instruction *Inst) {
2592 // If this instruction has void type, it cannot have a name or ID specified.
2593 if (Inst->getType()->isVoidTy()) {
2594 if (NameID != -1 || !NameStr.empty())
2595 return P.Error(NameLoc, "instructions returning void cannot have a name");
2599 // If this was a numbered instruction, verify that the instruction is the
2600 // expected value and resolve any forward references.
2601 if (NameStr.empty()) {
2602 // If neither a name nor an ID was specified, just use the next ID.
2604 NameID = NumberedVals.size();
2606 if (unsigned(NameID) != NumberedVals.size())
2607 return P.Error(NameLoc, "instruction expected to be numbered '%" +
2608 Twine(NumberedVals.size()) + "'");
2610 auto FI = ForwardRefValIDs.find(NameID);
2611 if (FI != ForwardRefValIDs.end()) {
2612 Value *Sentinel = FI->second.first;
2613 if (Sentinel->getType() != Inst->getType())
2614 return P.Error(NameLoc, "instruction forward referenced with type '" +
2615 getTypeString(FI->second.first->getType()) + "'");
2617 Sentinel->replaceAllUsesWith(Inst);
2619 ForwardRefValIDs.erase(FI);
2622 NumberedVals.push_back(Inst);
2626 // Otherwise, the instruction had a name. Resolve forward refs and set it.
2627 auto FI = ForwardRefVals.find(NameStr);
2628 if (FI != ForwardRefVals.end()) {
2629 Value *Sentinel = FI->second.first;
2630 if (Sentinel->getType() != Inst->getType())
2631 return P.Error(NameLoc, "instruction forward referenced with type '" +
2632 getTypeString(FI->second.first->getType()) + "'");
2634 Sentinel->replaceAllUsesWith(Inst);
2636 ForwardRefVals.erase(FI);
2639 // Set the name on the instruction.
2640 Inst->setName(NameStr);
2642 if (Inst->getName() != NameStr)
2643 return P.Error(NameLoc, "multiple definition of local value named '" +
2648 /// GetBB - Get a basic block with the specified name or ID, creating a
2649 /// forward reference record if needed.
2650 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2652 return dyn_cast_or_null<BasicBlock>(GetVal(Name,
2653 Type::getLabelTy(F.getContext()), Loc));
2656 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2657 return dyn_cast_or_null<BasicBlock>(GetVal(ID,
2658 Type::getLabelTy(F.getContext()), Loc));
2661 /// DefineBB - Define the specified basic block, which is either named or
2662 /// unnamed. If there is an error, this returns null otherwise it returns
2663 /// the block being defined.
2664 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2668 BB = GetBB(NumberedVals.size(), Loc);
2670 BB = GetBB(Name, Loc);
2671 if (!BB) return nullptr; // Already diagnosed error.
2673 // Move the block to the end of the function. Forward ref'd blocks are
2674 // inserted wherever they happen to be referenced.
2675 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2677 // Remove the block from forward ref sets.
2679 ForwardRefValIDs.erase(NumberedVals.size());
2680 NumberedVals.push_back(BB);
2682 // BB forward references are already in the function symbol table.
2683 ForwardRefVals.erase(Name);
2689 //===----------------------------------------------------------------------===//
2691 //===----------------------------------------------------------------------===//
2693 /// ParseValID - Parse an abstract value that doesn't necessarily have a
2694 /// type implied. For example, if we parse "4" we don't know what integer type
2695 /// it has. The value will later be combined with its type and checked for
2696 /// sanity. PFS is used to convert function-local operands of metadata (since
2697 /// metadata operands are not just parsed here but also converted to values).
2698 /// PFS can be null when we are not parsing metadata values inside a function.
2699 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2700 ID.Loc = Lex.getLoc();
2701 switch (Lex.getKind()) {
2702 default: return TokError("expected value token");
2703 case lltok::GlobalID: // @42
2704 ID.UIntVal = Lex.getUIntVal();
2705 ID.Kind = ValID::t_GlobalID;
2707 case lltok::GlobalVar: // @foo
2708 ID.StrVal = Lex.getStrVal();
2709 ID.Kind = ValID::t_GlobalName;
2711 case lltok::LocalVarID: // %42
2712 ID.UIntVal = Lex.getUIntVal();
2713 ID.Kind = ValID::t_LocalID;
2715 case lltok::LocalVar: // %foo
2716 ID.StrVal = Lex.getStrVal();
2717 ID.Kind = ValID::t_LocalName;
2720 ID.APSIntVal = Lex.getAPSIntVal();
2721 ID.Kind = ValID::t_APSInt;
2723 case lltok::APFloat:
2724 ID.APFloatVal = Lex.getAPFloatVal();
2725 ID.Kind = ValID::t_APFloat;
2727 case lltok::kw_true:
2728 ID.ConstantVal = ConstantInt::getTrue(Context);
2729 ID.Kind = ValID::t_Constant;
2731 case lltok::kw_false:
2732 ID.ConstantVal = ConstantInt::getFalse(Context);
2733 ID.Kind = ValID::t_Constant;
2735 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2736 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2737 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2738 case lltok::kw_none: ID.Kind = ValID::t_None; break;
2740 case lltok::lbrace: {
2741 // ValID ::= '{' ConstVector '}'
2743 SmallVector<Constant*, 16> Elts;
2744 if (ParseGlobalValueVector(Elts) ||
2745 ParseToken(lltok::rbrace, "expected end of struct constant"))
2748 ID.ConstantStructElts = make_unique<Constant *[]>(Elts.size());
2749 ID.UIntVal = Elts.size();
2750 memcpy(ID.ConstantStructElts.get(), Elts.data(),
2751 Elts.size() * sizeof(Elts[0]));
2752 ID.Kind = ValID::t_ConstantStruct;
2756 // ValID ::= '<' ConstVector '>' --> Vector.
2757 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2759 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2761 SmallVector<Constant*, 16> Elts;
2762 LocTy FirstEltLoc = Lex.getLoc();
2763 if (ParseGlobalValueVector(Elts) ||
2765 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2766 ParseToken(lltok::greater, "expected end of constant"))
2769 if (isPackedStruct) {
2770 ID.ConstantStructElts = make_unique<Constant *[]>(Elts.size());
2771 memcpy(ID.ConstantStructElts.get(), Elts.data(),
2772 Elts.size() * sizeof(Elts[0]));
2773 ID.UIntVal = Elts.size();
2774 ID.Kind = ValID::t_PackedConstantStruct;
2779 return Error(ID.Loc, "constant vector must not be empty");
2781 if (!Elts[0]->getType()->isIntegerTy() &&
2782 !Elts[0]->getType()->isFloatingPointTy() &&
2783 !Elts[0]->getType()->isPointerTy())
2784 return Error(FirstEltLoc,
2785 "vector elements must have integer, pointer or floating point type");
2787 // Verify that all the vector elements have the same type.
2788 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2789 if (Elts[i]->getType() != Elts[0]->getType())
2790 return Error(FirstEltLoc,
2791 "vector element #" + Twine(i) +
2792 " is not of type '" + getTypeString(Elts[0]->getType()));
2794 ID.ConstantVal = ConstantVector::get(Elts);
2795 ID.Kind = ValID::t_Constant;
2798 case lltok::lsquare: { // Array Constant
2800 SmallVector<Constant*, 16> Elts;
2801 LocTy FirstEltLoc = Lex.getLoc();
2802 if (ParseGlobalValueVector(Elts) ||
2803 ParseToken(lltok::rsquare, "expected end of array constant"))
2806 // Handle empty element.
2808 // Use undef instead of an array because it's inconvenient to determine
2809 // the element type at this point, there being no elements to examine.
2810 ID.Kind = ValID::t_EmptyArray;
2814 if (!Elts[0]->getType()->isFirstClassType())
2815 return Error(FirstEltLoc, "invalid array element type: " +
2816 getTypeString(Elts[0]->getType()));
2818 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2820 // Verify all elements are correct type!
2821 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2822 if (Elts[i]->getType() != Elts[0]->getType())
2823 return Error(FirstEltLoc,
2824 "array element #" + Twine(i) +
2825 " is not of type '" + getTypeString(Elts[0]->getType()));
2828 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2829 ID.Kind = ValID::t_Constant;
2832 case lltok::kw_c: // c "foo"
2834 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2836 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2837 ID.Kind = ValID::t_Constant;
2840 case lltok::kw_asm: {
2841 // ValID ::= 'asm' SideEffect? AlignStack? IntelDialect? STRINGCONSTANT ','
2843 bool HasSideEffect, AlignStack, AsmDialect;
2845 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2846 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2847 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2848 ParseStringConstant(ID.StrVal) ||
2849 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2850 ParseToken(lltok::StringConstant, "expected constraint string"))
2852 ID.StrVal2 = Lex.getStrVal();
2853 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2854 (unsigned(AsmDialect)<<2);
2855 ID.Kind = ValID::t_InlineAsm;
2859 case lltok::kw_blockaddress: {
2860 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2865 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2867 ParseToken(lltok::comma, "expected comma in block address expression")||
2868 ParseValID(Label) ||
2869 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2872 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2873 return Error(Fn.Loc, "expected function name in blockaddress");
2874 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2875 return Error(Label.Loc, "expected basic block name in blockaddress");
2877 // Try to find the function (but skip it if it's forward-referenced).
2878 GlobalValue *GV = nullptr;
2879 if (Fn.Kind == ValID::t_GlobalID) {
2880 if (Fn.UIntVal < NumberedVals.size())
2881 GV = NumberedVals[Fn.UIntVal];
2882 } else if (!ForwardRefVals.count(Fn.StrVal)) {
2883 GV = M->getNamedValue(Fn.StrVal);
2885 Function *F = nullptr;
2887 // Confirm that it's actually a function with a definition.
2888 if (!isa<Function>(GV))
2889 return Error(Fn.Loc, "expected function name in blockaddress");
2890 F = cast<Function>(GV);
2891 if (F->isDeclaration())
2892 return Error(Fn.Loc, "cannot take blockaddress inside a declaration");
2896 // Make a global variable as a placeholder for this reference.
2897 GlobalValue *&FwdRef =
2898 ForwardRefBlockAddresses.insert(std::make_pair(
2900 std::map<ValID, GlobalValue *>()))
2901 .first->second.insert(std::make_pair(std::move(Label), nullptr))
2904 FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context), false,
2905 GlobalValue::InternalLinkage, nullptr, "");
2906 ID.ConstantVal = FwdRef;
2907 ID.Kind = ValID::t_Constant;
2911 // We found the function; now find the basic block. Don't use PFS, since we
2912 // might be inside a constant expression.
2914 if (BlockAddressPFS && F == &BlockAddressPFS->getFunction()) {
2915 if (Label.Kind == ValID::t_LocalID)
2916 BB = BlockAddressPFS->GetBB(Label.UIntVal, Label.Loc);
2918 BB = BlockAddressPFS->GetBB(Label.StrVal, Label.Loc);
2920 return Error(Label.Loc, "referenced value is not a basic block");
2922 if (Label.Kind == ValID::t_LocalID)
2923 return Error(Label.Loc, "cannot take address of numeric label after "
2924 "the function is defined");
2925 BB = dyn_cast_or_null<BasicBlock>(
2926 F->getValueSymbolTable()->lookup(Label.StrVal));
2928 return Error(Label.Loc, "referenced value is not a basic block");
2931 ID.ConstantVal = BlockAddress::get(F, BB);
2932 ID.Kind = ValID::t_Constant;
2936 case lltok::kw_trunc:
2937 case lltok::kw_zext:
2938 case lltok::kw_sext:
2939 case lltok::kw_fptrunc:
2940 case lltok::kw_fpext:
2941 case lltok::kw_bitcast:
2942 case lltok::kw_addrspacecast:
2943 case lltok::kw_uitofp:
2944 case lltok::kw_sitofp:
2945 case lltok::kw_fptoui:
2946 case lltok::kw_fptosi:
2947 case lltok::kw_inttoptr:
2948 case lltok::kw_ptrtoint: {
2949 unsigned Opc = Lex.getUIntVal();
2950 Type *DestTy = nullptr;
2953 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2954 ParseGlobalTypeAndValue(SrcVal) ||
2955 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2956 ParseType(DestTy) ||
2957 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2959 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2960 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2961 getTypeString(SrcVal->getType()) + "' to '" +
2962 getTypeString(DestTy) + "'");
2963 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2965 ID.Kind = ValID::t_Constant;
2968 case lltok::kw_extractvalue: {
2971 SmallVector<unsigned, 4> Indices;
2972 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2973 ParseGlobalTypeAndValue(Val) ||
2974 ParseIndexList(Indices) ||
2975 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2978 if (!Val->getType()->isAggregateType())
2979 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2980 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
2981 return Error(ID.Loc, "invalid indices for extractvalue");
2982 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
2983 ID.Kind = ValID::t_Constant;
2986 case lltok::kw_insertvalue: {
2988 Constant *Val0, *Val1;
2989 SmallVector<unsigned, 4> Indices;
2990 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2991 ParseGlobalTypeAndValue(Val0) ||
2992 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2993 ParseGlobalTypeAndValue(Val1) ||
2994 ParseIndexList(Indices) ||
2995 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2997 if (!Val0->getType()->isAggregateType())
2998 return Error(ID.Loc, "insertvalue operand must be aggregate type");
3000 ExtractValueInst::getIndexedType(Val0->getType(), Indices);
3002 return Error(ID.Loc, "invalid indices for insertvalue");
3003 if (IndexedType != Val1->getType())
3004 return Error(ID.Loc, "insertvalue operand and field disagree in type: '" +
3005 getTypeString(Val1->getType()) +
3006 "' instead of '" + getTypeString(IndexedType) +
3008 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
3009 ID.Kind = ValID::t_Constant;
3012 case lltok::kw_icmp:
3013 case lltok::kw_fcmp: {
3014 unsigned PredVal, Opc = Lex.getUIntVal();
3015 Constant *Val0, *Val1;
3017 if (ParseCmpPredicate(PredVal, Opc) ||
3018 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
3019 ParseGlobalTypeAndValue(Val0) ||
3020 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
3021 ParseGlobalTypeAndValue(Val1) ||
3022 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
3025 if (Val0->getType() != Val1->getType())
3026 return Error(ID.Loc, "compare operands must have the same type");
3028 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
3030 if (Opc == Instruction::FCmp) {
3031 if (!Val0->getType()->isFPOrFPVectorTy())
3032 return Error(ID.Loc, "fcmp requires floating point operands");
3033 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
3035 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
3036 if (!Val0->getType()->isIntOrIntVectorTy() &&
3037 !Val0->getType()->getScalarType()->isPointerTy())
3038 return Error(ID.Loc, "icmp requires pointer or integer operands");
3039 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
3041 ID.Kind = ValID::t_Constant;
3045 // Binary Operators.
3047 case lltok::kw_fadd:
3049 case lltok::kw_fsub:
3051 case lltok::kw_fmul:
3052 case lltok::kw_udiv:
3053 case lltok::kw_sdiv:
3054 case lltok::kw_fdiv:
3055 case lltok::kw_urem:
3056 case lltok::kw_srem:
3057 case lltok::kw_frem:
3059 case lltok::kw_lshr:
3060 case lltok::kw_ashr: {
3064 unsigned Opc = Lex.getUIntVal();
3065 Constant *Val0, *Val1;
3067 LocTy ModifierLoc = Lex.getLoc();
3068 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
3069 Opc == Instruction::Mul || Opc == Instruction::Shl) {
3070 if (EatIfPresent(lltok::kw_nuw))
3072 if (EatIfPresent(lltok::kw_nsw)) {
3074 if (EatIfPresent(lltok::kw_nuw))
3077 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
3078 Opc == Instruction::LShr || Opc == Instruction::AShr) {
3079 if (EatIfPresent(lltok::kw_exact))
3082 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
3083 ParseGlobalTypeAndValue(Val0) ||
3084 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
3085 ParseGlobalTypeAndValue(Val1) ||
3086 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
3088 if (Val0->getType() != Val1->getType())
3089 return Error(ID.Loc, "operands of constexpr must have same type");
3090 if (!Val0->getType()->isIntOrIntVectorTy()) {
3092 return Error(ModifierLoc, "nuw only applies to integer operations");
3094 return Error(ModifierLoc, "nsw only applies to integer operations");
3096 // Check that the type is valid for the operator.
3098 case Instruction::Add:
3099 case Instruction::Sub:
3100 case Instruction::Mul:
3101 case Instruction::UDiv:
3102 case Instruction::SDiv:
3103 case Instruction::URem:
3104 case Instruction::SRem:
3105 case Instruction::Shl:
3106 case Instruction::AShr:
3107 case Instruction::LShr:
3108 if (!Val0->getType()->isIntOrIntVectorTy())
3109 return Error(ID.Loc, "constexpr requires integer operands");
3111 case Instruction::FAdd:
3112 case Instruction::FSub:
3113 case Instruction::FMul:
3114 case Instruction::FDiv:
3115 case Instruction::FRem:
3116 if (!Val0->getType()->isFPOrFPVectorTy())
3117 return Error(ID.Loc, "constexpr requires fp operands");
3119 default: llvm_unreachable("Unknown binary operator!");
3122 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
3123 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
3124 if (Exact) Flags |= PossiblyExactOperator::IsExact;
3125 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
3127 ID.Kind = ValID::t_Constant;
3131 // Logical Operations
3134 case lltok::kw_xor: {
3135 unsigned Opc = Lex.getUIntVal();
3136 Constant *Val0, *Val1;
3138 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
3139 ParseGlobalTypeAndValue(Val0) ||
3140 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
3141 ParseGlobalTypeAndValue(Val1) ||
3142 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
3144 if (Val0->getType() != Val1->getType())
3145 return Error(ID.Loc, "operands of constexpr must have same type");
3146 if (!Val0->getType()->isIntOrIntVectorTy())
3147 return Error(ID.Loc,
3148 "constexpr requires integer or integer vector operands");
3149 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
3150 ID.Kind = ValID::t_Constant;
3154 case lltok::kw_getelementptr:
3155 case lltok::kw_shufflevector:
3156 case lltok::kw_insertelement:
3157 case lltok::kw_extractelement:
3158 case lltok::kw_select: {
3159 unsigned Opc = Lex.getUIntVal();
3160 SmallVector<Constant*, 16> Elts;
3161 bool InBounds = false;
3165 if (Opc == Instruction::GetElementPtr)
3166 InBounds = EatIfPresent(lltok::kw_inbounds);
3168 if (ParseToken(lltok::lparen, "expected '(' in constantexpr"))
3171 LocTy ExplicitTypeLoc = Lex.getLoc();
3172 if (Opc == Instruction::GetElementPtr) {
3173 if (ParseType(Ty) ||
3174 ParseToken(lltok::comma, "expected comma after getelementptr's type"))
3178 if (ParseGlobalValueVector(Elts) ||
3179 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
3182 if (Opc == Instruction::GetElementPtr) {
3183 if (Elts.size() == 0 ||
3184 !Elts[0]->getType()->getScalarType()->isPointerTy())
3185 return Error(ID.Loc, "base of getelementptr must be a pointer");
3187 Type *BaseType = Elts[0]->getType();
3188 auto *BasePointerType = cast<PointerType>(BaseType->getScalarType());
3189 if (Ty != BasePointerType->getElementType())
3192 "explicit pointee type doesn't match operand's pointee type");
3194 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
3195 for (Constant *Val : Indices) {
3196 Type *ValTy = Val->getType();
3197 if (!ValTy->getScalarType()->isIntegerTy())
3198 return Error(ID.Loc, "getelementptr index must be an integer");
3199 if (ValTy->isVectorTy() != BaseType->isVectorTy())
3200 return Error(ID.Loc, "getelementptr index type missmatch");
3201 if (ValTy->isVectorTy()) {
3202 unsigned ValNumEl = ValTy->getVectorNumElements();
3203 unsigned PtrNumEl = BaseType->getVectorNumElements();
3204 if (ValNumEl != PtrNumEl)
3207 "getelementptr vector index has a wrong number of elements");
3211 SmallPtrSet<Type*, 4> Visited;
3212 if (!Indices.empty() && !Ty->isSized(&Visited))
3213 return Error(ID.Loc, "base element of getelementptr must be sized");
3215 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
3216 return Error(ID.Loc, "invalid getelementptr indices");
3218 ConstantExpr::getGetElementPtr(Ty, Elts[0], Indices, InBounds);
3219 } else if (Opc == Instruction::Select) {
3220 if (Elts.size() != 3)
3221 return Error(ID.Loc, "expected three operands to select");
3222 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
3224 return Error(ID.Loc, Reason);
3225 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
3226 } else if (Opc == Instruction::ShuffleVector) {
3227 if (Elts.size() != 3)
3228 return Error(ID.Loc, "expected three operands to shufflevector");
3229 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
3230 return Error(ID.Loc, "invalid operands to shufflevector");
3232 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
3233 } else if (Opc == Instruction::ExtractElement) {
3234 if (Elts.size() != 2)
3235 return Error(ID.Loc, "expected two operands to extractelement");
3236 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
3237 return Error(ID.Loc, "invalid extractelement operands");
3238 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
3240 assert(Opc == Instruction::InsertElement && "Unknown opcode");
3241 if (Elts.size() != 3)
3242 return Error(ID.Loc, "expected three operands to insertelement");
3243 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
3244 return Error(ID.Loc, "invalid insertelement operands");
3246 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
3249 ID.Kind = ValID::t_Constant;
3258 /// ParseGlobalValue - Parse a global value with the specified type.
3259 bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
3263 bool Parsed = ParseValID(ID) ||
3264 ConvertValIDToValue(Ty, ID, V, nullptr);
3265 if (V && !(C = dyn_cast<Constant>(V)))
3266 return Error(ID.Loc, "global values must be constants");
3270 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
3272 return ParseType(Ty) ||
3273 ParseGlobalValue(Ty, V);
3276 bool LLParser::parseOptionalComdat(StringRef GlobalName, Comdat *&C) {
3279 LocTy KwLoc = Lex.getLoc();
3280 if (!EatIfPresent(lltok::kw_comdat))
3283 if (EatIfPresent(lltok::lparen)) {
3284 if (Lex.getKind() != lltok::ComdatVar)
3285 return TokError("expected comdat variable");
3286 C = getComdat(Lex.getStrVal(), Lex.getLoc());
3288 if (ParseToken(lltok::rparen, "expected ')' after comdat var"))
3291 if (GlobalName.empty())
3292 return TokError("comdat cannot be unnamed");
3293 C = getComdat(GlobalName, KwLoc);
3299 /// ParseGlobalValueVector
3301 /// ::= TypeAndValue (',' TypeAndValue)*
3302 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant *> &Elts) {
3304 if (Lex.getKind() == lltok::rbrace ||
3305 Lex.getKind() == lltok::rsquare ||
3306 Lex.getKind() == lltok::greater ||
3307 Lex.getKind() == lltok::rparen)
3311 if (ParseGlobalTypeAndValue(C)) return true;
3314 while (EatIfPresent(lltok::comma)) {
3315 if (ParseGlobalTypeAndValue(C)) return true;
3322 bool LLParser::ParseMDTuple(MDNode *&MD, bool IsDistinct) {
3323 SmallVector<Metadata *, 16> Elts;
3324 if (ParseMDNodeVector(Elts))
3327 MD = (IsDistinct ? MDTuple::getDistinct : MDTuple::get)(Context, Elts);
3334 /// ::= !DILocation(...)
3335 bool LLParser::ParseMDNode(MDNode *&N) {
3336 if (Lex.getKind() == lltok::MetadataVar)
3337 return ParseSpecializedMDNode(N);
3339 return ParseToken(lltok::exclaim, "expected '!' here") ||
3343 bool LLParser::ParseMDNodeTail(MDNode *&N) {
3345 if (Lex.getKind() == lltok::lbrace)
3346 return ParseMDTuple(N);
3349 return ParseMDNodeID(N);
3354 /// Structure to represent an optional metadata field.
3355 template <class FieldTy> struct MDFieldImpl {
3356 typedef MDFieldImpl ImplTy;
3360 void assign(FieldTy Val) {
3362 this->Val = std::move(Val);
3365 explicit MDFieldImpl(FieldTy Default)
3366 : Val(std::move(Default)), Seen(false) {}
3369 struct MDUnsignedField : public MDFieldImpl<uint64_t> {
3372 MDUnsignedField(uint64_t Default = 0, uint64_t Max = UINT64_MAX)
3373 : ImplTy(Default), Max(Max) {}
3376 struct LineField : public MDUnsignedField {
3377 LineField() : MDUnsignedField(0, UINT32_MAX) {}
3380 struct ColumnField : public MDUnsignedField {
3381 ColumnField() : MDUnsignedField(0, UINT16_MAX) {}
3384 struct DwarfTagField : public MDUnsignedField {
3385 DwarfTagField() : MDUnsignedField(0, dwarf::DW_TAG_hi_user) {}
3386 DwarfTagField(dwarf::Tag DefaultTag)
3387 : MDUnsignedField(DefaultTag, dwarf::DW_TAG_hi_user) {}
3390 struct DwarfMacinfoTypeField : public MDUnsignedField {
3391 DwarfMacinfoTypeField() : MDUnsignedField(0, dwarf::DW_MACINFO_vendor_ext) {}
3392 DwarfMacinfoTypeField(dwarf::MacinfoRecordType DefaultType)
3393 : MDUnsignedField(DefaultType, dwarf::DW_MACINFO_vendor_ext) {}
3396 struct DwarfAttEncodingField : public MDUnsignedField {
3397 DwarfAttEncodingField() : MDUnsignedField(0, dwarf::DW_ATE_hi_user) {}
3400 struct DwarfVirtualityField : public MDUnsignedField {
3401 DwarfVirtualityField() : MDUnsignedField(0, dwarf::DW_VIRTUALITY_max) {}
3404 struct DwarfLangField : public MDUnsignedField {
3405 DwarfLangField() : MDUnsignedField(0, dwarf::DW_LANG_hi_user) {}
3408 struct DwarfCCField : public MDUnsignedField {
3409 DwarfCCField() : MDUnsignedField(0, dwarf::DW_CC_hi_user) {}
3412 struct EmissionKindField : public MDUnsignedField {
3413 EmissionKindField() : MDUnsignedField(0, DICompileUnit::LastEmissionKind) {}
3416 struct DIFlagField : public MDFieldImpl<DINode::DIFlags> {
3417 DIFlagField() : MDFieldImpl(DINode::FlagZero) {}
3420 struct MDSignedField : public MDFieldImpl<int64_t> {
3424 MDSignedField(int64_t Default = 0)
3425 : ImplTy(Default), Min(INT64_MIN), Max(INT64_MAX) {}
3426 MDSignedField(int64_t Default, int64_t Min, int64_t Max)
3427 : ImplTy(Default), Min(Min), Max(Max) {}
3430 struct MDBoolField : public MDFieldImpl<bool> {
3431 MDBoolField(bool Default = false) : ImplTy(Default) {}
3434 struct MDField : public MDFieldImpl<Metadata *> {
3437 MDField(bool AllowNull = true) : ImplTy(nullptr), AllowNull(AllowNull) {}
3440 struct MDConstant : public MDFieldImpl<ConstantAsMetadata *> {
3441 MDConstant() : ImplTy(nullptr) {}
3444 struct MDStringField : public MDFieldImpl<MDString *> {
3446 MDStringField(bool AllowEmpty = true)
3447 : ImplTy(nullptr), AllowEmpty(AllowEmpty) {}
3450 struct MDFieldList : public MDFieldImpl<SmallVector<Metadata *, 4>> {
3451 MDFieldList() : ImplTy(SmallVector<Metadata *, 4>()) {}
3454 } // end anonymous namespace
3459 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3460 MDUnsignedField &Result) {
3461 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
3462 return TokError("expected unsigned integer");
3464 auto &U = Lex.getAPSIntVal();
3465 if (U.ugt(Result.Max))
3466 return TokError("value for '" + Name + "' too large, limit is " +
3468 Result.assign(U.getZExtValue());
3469 assert(Result.Val <= Result.Max && "Expected value in range");
3475 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, LineField &Result) {
3476 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3479 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, ColumnField &Result) {
3480 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3484 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfTagField &Result) {
3485 if (Lex.getKind() == lltok::APSInt)
3486 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3488 if (Lex.getKind() != lltok::DwarfTag)
3489 return TokError("expected DWARF tag");
3491 unsigned Tag = dwarf::getTag(Lex.getStrVal());
3492 if (Tag == dwarf::DW_TAG_invalid)
3493 return TokError("invalid DWARF tag" + Twine(" '") + Lex.getStrVal() + "'");
3494 assert(Tag <= Result.Max && "Expected valid DWARF tag");
3502 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3503 DwarfMacinfoTypeField &Result) {
3504 if (Lex.getKind() == lltok::APSInt)
3505 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3507 if (Lex.getKind() != lltok::DwarfMacinfo)
3508 return TokError("expected DWARF macinfo type");
3510 unsigned Macinfo = dwarf::getMacinfo(Lex.getStrVal());
3511 if (Macinfo == dwarf::DW_MACINFO_invalid)
3513 "invalid DWARF macinfo type" + Twine(" '") + Lex.getStrVal() + "'");
3514 assert(Macinfo <= Result.Max && "Expected valid DWARF macinfo type");
3516 Result.assign(Macinfo);
3522 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3523 DwarfVirtualityField &Result) {
3524 if (Lex.getKind() == lltok::APSInt)
3525 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3527 if (Lex.getKind() != lltok::DwarfVirtuality)
3528 return TokError("expected DWARF virtuality code");
3530 unsigned Virtuality = dwarf::getVirtuality(Lex.getStrVal());
3531 if (Virtuality == dwarf::DW_VIRTUALITY_invalid)
3532 return TokError("invalid DWARF virtuality code" + Twine(" '") +
3533 Lex.getStrVal() + "'");
3534 assert(Virtuality <= Result.Max && "Expected valid DWARF virtuality code");
3535 Result.assign(Virtuality);
3541 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfLangField &Result) {
3542 if (Lex.getKind() == lltok::APSInt)
3543 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3545 if (Lex.getKind() != lltok::DwarfLang)
3546 return TokError("expected DWARF language");
3548 unsigned Lang = dwarf::getLanguage(Lex.getStrVal());
3550 return TokError("invalid DWARF language" + Twine(" '") + Lex.getStrVal() +
3552 assert(Lang <= Result.Max && "Expected valid DWARF language");
3553 Result.assign(Lang);
3559 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfCCField &Result) {
3560 if (Lex.getKind() == lltok::APSInt)
3561 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3563 if (Lex.getKind() != lltok::DwarfCC)
3564 return TokError("expected DWARF calling convention");
3566 unsigned CC = dwarf::getCallingConvention(Lex.getStrVal());
3568 return TokError("invalid DWARF calling convention" + Twine(" '") + Lex.getStrVal() +
3570 assert(CC <= Result.Max && "Expected valid DWARF calling convention");
3577 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, EmissionKindField &Result) {
3578 if (Lex.getKind() == lltok::APSInt)
3579 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3581 if (Lex.getKind() != lltok::EmissionKind)
3582 return TokError("expected emission kind");
3584 auto Kind = DICompileUnit::getEmissionKind(Lex.getStrVal());
3586 return TokError("invalid emission kind" + Twine(" '") + Lex.getStrVal() +
3588 assert(*Kind <= Result.Max && "Expected valid emission kind");
3589 Result.assign(*Kind);
3595 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3596 DwarfAttEncodingField &Result) {
3597 if (Lex.getKind() == lltok::APSInt)
3598 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3600 if (Lex.getKind() != lltok::DwarfAttEncoding)
3601 return TokError("expected DWARF type attribute encoding");
3603 unsigned Encoding = dwarf::getAttributeEncoding(Lex.getStrVal());
3605 return TokError("invalid DWARF type attribute encoding" + Twine(" '") +
3606 Lex.getStrVal() + "'");
3607 assert(Encoding <= Result.Max && "Expected valid DWARF language");
3608 Result.assign(Encoding);
3615 /// ::= DIFlagVector
3616 /// ::= DIFlagVector '|' DIFlagFwdDecl '|' uint32 '|' DIFlagPublic
3618 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DIFlagField &Result) {
3620 // Parser for a single flag.
3621 auto parseFlag = [&](DINode::DIFlags &Val) {
3622 if (Lex.getKind() == lltok::APSInt && !Lex.getAPSIntVal().isSigned()) {
3623 uint32_t TempVal = static_cast<uint32_t>(Val);
3624 bool Res = ParseUInt32(TempVal);
3625 Val = static_cast<DINode::DIFlags>(TempVal);
3629 if (Lex.getKind() != lltok::DIFlag)
3630 return TokError("expected debug info flag");
3632 Val = DINode::getFlag(Lex.getStrVal());
3634 return TokError(Twine("invalid debug info flag flag '") +
3635 Lex.getStrVal() + "'");
3640 // Parse the flags and combine them together.
3641 DINode::DIFlags Combined = DINode::FlagZero;
3643 DINode::DIFlags Val;
3647 } while (EatIfPresent(lltok::bar));
3649 Result.assign(Combined);
3654 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3655 MDSignedField &Result) {
3656 if (Lex.getKind() != lltok::APSInt)
3657 return TokError("expected signed integer");
3659 auto &S = Lex.getAPSIntVal();
3661 return TokError("value for '" + Name + "' too small, limit is " +
3664 return TokError("value for '" + Name + "' too large, limit is " +
3666 Result.assign(S.getExtValue());
3667 assert(Result.Val >= Result.Min && "Expected value in range");
3668 assert(Result.Val <= Result.Max && "Expected value in range");
3674 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDBoolField &Result) {
3675 switch (Lex.getKind()) {
3677 return TokError("expected 'true' or 'false'");
3678 case lltok::kw_true:
3679 Result.assign(true);
3681 case lltok::kw_false:
3682 Result.assign(false);
3690 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDField &Result) {
3691 if (Lex.getKind() == lltok::kw_null) {
3692 if (!Result.AllowNull)
3693 return TokError("'" + Name + "' cannot be null");
3695 Result.assign(nullptr);
3700 if (ParseMetadata(MD, nullptr))
3708 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDStringField &Result) {
3709 LocTy ValueLoc = Lex.getLoc();
3711 if (ParseStringConstant(S))
3714 if (!Result.AllowEmpty && S.empty())
3715 return Error(ValueLoc, "'" + Name + "' cannot be empty");
3717 Result.assign(S.empty() ? nullptr : MDString::get(Context, S));
3722 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDFieldList &Result) {
3723 SmallVector<Metadata *, 4> MDs;
3724 if (ParseMDNodeVector(MDs))
3727 Result.assign(std::move(MDs));
3731 } // end namespace llvm
3733 template <class ParserTy>
3734 bool LLParser::ParseMDFieldsImplBody(ParserTy parseField) {
3736 if (Lex.getKind() != lltok::LabelStr)
3737 return TokError("expected field label here");
3741 } while (EatIfPresent(lltok::comma));
3746 template <class ParserTy>
3747 bool LLParser::ParseMDFieldsImpl(ParserTy parseField, LocTy &ClosingLoc) {
3748 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3751 if (ParseToken(lltok::lparen, "expected '(' here"))
3753 if (Lex.getKind() != lltok::rparen)
3754 if (ParseMDFieldsImplBody(parseField))
3757 ClosingLoc = Lex.getLoc();
3758 return ParseToken(lltok::rparen, "expected ')' here");
3761 template <class FieldTy>
3762 bool LLParser::ParseMDField(StringRef Name, FieldTy &Result) {
3764 return TokError("field '" + Name + "' cannot be specified more than once");
3766 LocTy Loc = Lex.getLoc();
3768 return ParseMDField(Loc, Name, Result);
3771 bool LLParser::ParseSpecializedMDNode(MDNode *&N, bool IsDistinct) {
3772 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3774 #define HANDLE_SPECIALIZED_MDNODE_LEAF(CLASS) \
3775 if (Lex.getStrVal() == #CLASS) \
3776 return Parse##CLASS(N, IsDistinct);
3777 #include "llvm/IR/Metadata.def"
3779 return TokError("expected metadata type");
3782 #define DECLARE_FIELD(NAME, TYPE, INIT) TYPE NAME INIT
3783 #define NOP_FIELD(NAME, TYPE, INIT)
3784 #define REQUIRE_FIELD(NAME, TYPE, INIT) \
3786 return Error(ClosingLoc, "missing required field '" #NAME "'");
3787 #define PARSE_MD_FIELD(NAME, TYPE, DEFAULT) \
3788 if (Lex.getStrVal() == #NAME) \
3789 return ParseMDField(#NAME, NAME);
3790 #define PARSE_MD_FIELDS() \
3791 VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) \
3794 if (ParseMDFieldsImpl([&]() -> bool { \
3795 VISIT_MD_FIELDS(PARSE_MD_FIELD, PARSE_MD_FIELD) \
3796 return TokError(Twine("invalid field '") + Lex.getStrVal() + "'"); \
3799 VISIT_MD_FIELDS(NOP_FIELD, REQUIRE_FIELD) \
3801 #define GET_OR_DISTINCT(CLASS, ARGS) \
3802 (IsDistinct ? CLASS::getDistinct ARGS : CLASS::get ARGS)
3804 /// ParseDILocationFields:
3805 /// ::= !DILocation(line: 43, column: 8, scope: !5, inlinedAt: !6)
3806 bool LLParser::ParseDILocation(MDNode *&Result, bool IsDistinct) {
3807 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3808 OPTIONAL(line, LineField, ); \
3809 OPTIONAL(column, ColumnField, ); \
3810 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3811 OPTIONAL(inlinedAt, MDField, );
3813 #undef VISIT_MD_FIELDS
3815 Result = GET_OR_DISTINCT(
3816 DILocation, (Context, line.Val, column.Val, scope.Val, inlinedAt.Val));
3820 /// ParseGenericDINode:
3821 /// ::= !GenericDINode(tag: 15, header: "...", operands: {...})
3822 bool LLParser::ParseGenericDINode(MDNode *&Result, bool IsDistinct) {
3823 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3824 REQUIRED(tag, DwarfTagField, ); \
3825 OPTIONAL(header, MDStringField, ); \
3826 OPTIONAL(operands, MDFieldList, );
3828 #undef VISIT_MD_FIELDS
3830 Result = GET_OR_DISTINCT(GenericDINode,
3831 (Context, tag.Val, header.Val, operands.Val));
3835 /// ParseDISubrange:
3836 /// ::= !DISubrange(count: 30, lowerBound: 2)
3837 bool LLParser::ParseDISubrange(MDNode *&Result, bool IsDistinct) {
3838 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3839 REQUIRED(count, MDSignedField, (-1, -1, INT64_MAX)); \
3840 OPTIONAL(lowerBound, MDSignedField, );
3842 #undef VISIT_MD_FIELDS
3844 Result = GET_OR_DISTINCT(DISubrange, (Context, count.Val, lowerBound.Val));
3848 /// ParseDIEnumerator:
3849 /// ::= !DIEnumerator(value: 30, name: "SomeKind")
3850 bool LLParser::ParseDIEnumerator(MDNode *&Result, bool IsDistinct) {
3851 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3852 REQUIRED(name, MDStringField, ); \
3853 REQUIRED(value, MDSignedField, );
3855 #undef VISIT_MD_FIELDS
3857 Result = GET_OR_DISTINCT(DIEnumerator, (Context, value.Val, name.Val));
3861 /// ParseDIBasicType:
3862 /// ::= !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32)
3863 bool LLParser::ParseDIBasicType(MDNode *&Result, bool IsDistinct) {
3864 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3865 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_base_type)); \
3866 OPTIONAL(name, MDStringField, ); \
3867 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3868 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX)); \
3869 OPTIONAL(encoding, DwarfAttEncodingField, );
3871 #undef VISIT_MD_FIELDS
3873 Result = GET_OR_DISTINCT(DIBasicType, (Context, tag.Val, name.Val, size.Val,
3874 align.Val, encoding.Val));
3878 /// ParseDIDerivedType:
3879 /// ::= !DIDerivedType(tag: DW_TAG_pointer_type, name: "int", file: !0,
3880 /// line: 7, scope: !1, baseType: !2, size: 32,
3881 /// align: 32, offset: 0, flags: 0, extraData: !3)
3882 bool LLParser::ParseDIDerivedType(MDNode *&Result, bool IsDistinct) {
3883 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3884 REQUIRED(tag, DwarfTagField, ); \
3885 OPTIONAL(name, MDStringField, ); \
3886 OPTIONAL(file, MDField, ); \
3887 OPTIONAL(line, LineField, ); \
3888 OPTIONAL(scope, MDField, ); \
3889 REQUIRED(baseType, MDField, ); \
3890 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3891 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX)); \
3892 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX)); \
3893 OPTIONAL(flags, DIFlagField, ); \
3894 OPTIONAL(extraData, MDField, );
3896 #undef VISIT_MD_FIELDS
3898 Result = GET_OR_DISTINCT(DIDerivedType,
3899 (Context, tag.Val, name.Val, file.Val, line.Val,
3900 scope.Val, baseType.Val, size.Val, align.Val,
3901 offset.Val, flags.Val, extraData.Val));
3905 bool LLParser::ParseDICompositeType(MDNode *&Result, bool IsDistinct) {
3906 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3907 REQUIRED(tag, DwarfTagField, ); \
3908 OPTIONAL(name, MDStringField, ); \
3909 OPTIONAL(file, MDField, ); \
3910 OPTIONAL(line, LineField, ); \
3911 OPTIONAL(scope, MDField, ); \
3912 OPTIONAL(baseType, MDField, ); \
3913 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3914 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX)); \
3915 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX)); \
3916 OPTIONAL(flags, DIFlagField, ); \
3917 OPTIONAL(elements, MDField, ); \
3918 OPTIONAL(runtimeLang, DwarfLangField, ); \
3919 OPTIONAL(vtableHolder, MDField, ); \
3920 OPTIONAL(templateParams, MDField, ); \
3921 OPTIONAL(identifier, MDStringField, );
3923 #undef VISIT_MD_FIELDS
3925 // If this has an identifier try to build an ODR type.
3927 if (auto *CT = DICompositeType::buildODRType(
3928 Context, *identifier.Val, tag.Val, name.Val, file.Val, line.Val,
3929 scope.Val, baseType.Val, size.Val, align.Val, offset.Val, flags.Val,
3930 elements.Val, runtimeLang.Val, vtableHolder.Val,
3931 templateParams.Val)) {
3936 // Create a new node, and save it in the context if it belongs in the type
3938 Result = GET_OR_DISTINCT(
3940 (Context, tag.Val, name.Val, file.Val, line.Val, scope.Val, baseType.Val,
3941 size.Val, align.Val, offset.Val, flags.Val, elements.Val,
3942 runtimeLang.Val, vtableHolder.Val, templateParams.Val, identifier.Val));
3946 bool LLParser::ParseDISubroutineType(MDNode *&Result, bool IsDistinct) {
3947 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3948 OPTIONAL(flags, DIFlagField, ); \
3949 OPTIONAL(cc, DwarfCCField, ); \
3950 REQUIRED(types, MDField, );
3952 #undef VISIT_MD_FIELDS
3954 Result = GET_OR_DISTINCT(DISubroutineType,
3955 (Context, flags.Val, cc.Val, types.Val));
3959 /// ParseDIFileType:
3960 /// ::= !DIFileType(filename: "path/to/file", directory: "/path/to/dir")
3961 bool LLParser::ParseDIFile(MDNode *&Result, bool IsDistinct) {
3962 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3963 REQUIRED(filename, MDStringField, ); \
3964 REQUIRED(directory, MDStringField, );
3966 #undef VISIT_MD_FIELDS
3968 Result = GET_OR_DISTINCT(DIFile, (Context, filename.Val, directory.Val));
3972 /// ParseDICompileUnit:
3973 /// ::= !DICompileUnit(language: DW_LANG_C99, file: !0, producer: "clang",
3974 /// isOptimized: true, flags: "-O2", runtimeVersion: 1,
3975 /// splitDebugFilename: "abc.debug",
3976 /// emissionKind: FullDebug, enums: !1, retainedTypes: !2,
3977 /// globals: !4, imports: !5, macros: !6, dwoId: 0x0abcd)
3978 bool LLParser::ParseDICompileUnit(MDNode *&Result, bool IsDistinct) {
3980 return Lex.Error("missing 'distinct', required for !DICompileUnit");
3982 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3983 REQUIRED(language, DwarfLangField, ); \
3984 REQUIRED(file, MDField, (/* AllowNull */ false)); \
3985 OPTIONAL(producer, MDStringField, ); \
3986 OPTIONAL(isOptimized, MDBoolField, ); \
3987 OPTIONAL(flags, MDStringField, ); \
3988 OPTIONAL(runtimeVersion, MDUnsignedField, (0, UINT32_MAX)); \
3989 OPTIONAL(splitDebugFilename, MDStringField, ); \
3990 OPTIONAL(emissionKind, EmissionKindField, ); \
3991 OPTIONAL(enums, MDField, ); \
3992 OPTIONAL(retainedTypes, MDField, ); \
3993 OPTIONAL(globals, MDField, ); \
3994 OPTIONAL(imports, MDField, ); \
3995 OPTIONAL(macros, MDField, ); \
3996 OPTIONAL(dwoId, MDUnsignedField, ); \
3997 OPTIONAL(splitDebugInlining, MDBoolField, = true);
3999 #undef VISIT_MD_FIELDS
4001 Result = DICompileUnit::getDistinct(
4002 Context, language.Val, file.Val, producer.Val, isOptimized.Val, flags.Val,
4003 runtimeVersion.Val, splitDebugFilename.Val, emissionKind.Val, enums.Val,
4004 retainedTypes.Val, globals.Val, imports.Val, macros.Val, dwoId.Val,
4005 splitDebugInlining.Val);
4009 /// ParseDISubprogram:
4010 /// ::= !DISubprogram(scope: !0, name: "foo", linkageName: "_Zfoo",
4011 /// file: !1, line: 7, type: !2, isLocal: false,
4012 /// isDefinition: true, scopeLine: 8, containingType: !3,
4013 /// virtuality: DW_VIRTUALTIY_pure_virtual,
4014 /// virtualIndex: 10, thisAdjustment: 4, flags: 11,
4015 /// isOptimized: false, templateParams: !4, declaration: !5,
4017 bool LLParser::ParseDISubprogram(MDNode *&Result, bool IsDistinct) {
4018 auto Loc = Lex.getLoc();
4019 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4020 OPTIONAL(scope, MDField, ); \
4021 OPTIONAL(name, MDStringField, ); \
4022 OPTIONAL(linkageName, MDStringField, ); \
4023 OPTIONAL(file, MDField, ); \
4024 OPTIONAL(line, LineField, ); \
4025 OPTIONAL(type, MDField, ); \
4026 OPTIONAL(isLocal, MDBoolField, ); \
4027 OPTIONAL(isDefinition, MDBoolField, (true)); \
4028 OPTIONAL(scopeLine, LineField, ); \
4029 OPTIONAL(containingType, MDField, ); \
4030 OPTIONAL(virtuality, DwarfVirtualityField, ); \
4031 OPTIONAL(virtualIndex, MDUnsignedField, (0, UINT32_MAX)); \
4032 OPTIONAL(thisAdjustment, MDSignedField, (0, INT32_MIN, INT32_MAX)); \
4033 OPTIONAL(flags, DIFlagField, ); \
4034 OPTIONAL(isOptimized, MDBoolField, ); \
4035 OPTIONAL(unit, MDField, ); \
4036 OPTIONAL(templateParams, MDField, ); \
4037 OPTIONAL(declaration, MDField, ); \
4038 OPTIONAL(variables, MDField, );
4040 #undef VISIT_MD_FIELDS
4042 if (isDefinition.Val && !IsDistinct)
4045 "missing 'distinct', required for !DISubprogram when 'isDefinition'");
4047 Result = GET_OR_DISTINCT(
4048 DISubprogram, (Context, scope.Val, name.Val, linkageName.Val, file.Val,
4049 line.Val, type.Val, isLocal.Val, isDefinition.Val,
4050 scopeLine.Val, containingType.Val, virtuality.Val,
4051 virtualIndex.Val, thisAdjustment.Val, flags.Val,
4052 isOptimized.Val, unit.Val, templateParams.Val,
4053 declaration.Val, variables.Val));
4057 /// ParseDILexicalBlock:
4058 /// ::= !DILexicalBlock(scope: !0, file: !2, line: 7, column: 9)
4059 bool LLParser::ParseDILexicalBlock(MDNode *&Result, bool IsDistinct) {
4060 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4061 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
4062 OPTIONAL(file, MDField, ); \
4063 OPTIONAL(line, LineField, ); \
4064 OPTIONAL(column, ColumnField, );
4066 #undef VISIT_MD_FIELDS
4068 Result = GET_OR_DISTINCT(
4069 DILexicalBlock, (Context, scope.Val, file.Val, line.Val, column.Val));
4073 /// ParseDILexicalBlockFile:
4074 /// ::= !DILexicalBlockFile(scope: !0, file: !2, discriminator: 9)
4075 bool LLParser::ParseDILexicalBlockFile(MDNode *&Result, bool IsDistinct) {
4076 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4077 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
4078 OPTIONAL(file, MDField, ); \
4079 REQUIRED(discriminator, MDUnsignedField, (0, UINT32_MAX));
4081 #undef VISIT_MD_FIELDS
4083 Result = GET_OR_DISTINCT(DILexicalBlockFile,
4084 (Context, scope.Val, file.Val, discriminator.Val));
4088 /// ParseDINamespace:
4089 /// ::= !DINamespace(scope: !0, file: !2, name: "SomeNamespace", line: 9)
4090 bool LLParser::ParseDINamespace(MDNode *&Result, bool IsDistinct) {
4091 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4092 REQUIRED(scope, MDField, ); \
4093 OPTIONAL(file, MDField, ); \
4094 OPTIONAL(name, MDStringField, ); \
4095 OPTIONAL(line, LineField, );
4097 #undef VISIT_MD_FIELDS
4099 Result = GET_OR_DISTINCT(DINamespace,
4100 (Context, scope.Val, file.Val, name.Val, line.Val));
4105 /// ::= !DIMacro(macinfo: type, line: 9, name: "SomeMacro", value: "SomeValue")
4106 bool LLParser::ParseDIMacro(MDNode *&Result, bool IsDistinct) {
4107 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4108 REQUIRED(type, DwarfMacinfoTypeField, ); \
4109 REQUIRED(line, LineField, ); \
4110 REQUIRED(name, MDStringField, ); \
4111 OPTIONAL(value, MDStringField, );
4113 #undef VISIT_MD_FIELDS
4115 Result = GET_OR_DISTINCT(DIMacro,
4116 (Context, type.Val, line.Val, name.Val, value.Val));
4120 /// ParseDIMacroFile:
4121 /// ::= !DIMacroFile(line: 9, file: !2, nodes: !3)
4122 bool LLParser::ParseDIMacroFile(MDNode *&Result, bool IsDistinct) {
4123 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4124 OPTIONAL(type, DwarfMacinfoTypeField, (dwarf::DW_MACINFO_start_file)); \
4125 REQUIRED(line, LineField, ); \
4126 REQUIRED(file, MDField, ); \
4127 OPTIONAL(nodes, MDField, );
4129 #undef VISIT_MD_FIELDS
4131 Result = GET_OR_DISTINCT(DIMacroFile,
4132 (Context, type.Val, line.Val, file.Val, nodes.Val));
4137 /// ::= !DIModule(scope: !0, name: "SomeModule", configMacros: "-DNDEBUG",
4138 /// includePath: "/usr/include", isysroot: "/")
4139 bool LLParser::ParseDIModule(MDNode *&Result, bool IsDistinct) {
4140 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4141 REQUIRED(scope, MDField, ); \
4142 REQUIRED(name, MDStringField, ); \
4143 OPTIONAL(configMacros, MDStringField, ); \
4144 OPTIONAL(includePath, MDStringField, ); \
4145 OPTIONAL(isysroot, MDStringField, );
4147 #undef VISIT_MD_FIELDS
4149 Result = GET_OR_DISTINCT(DIModule, (Context, scope.Val, name.Val,
4150 configMacros.Val, includePath.Val, isysroot.Val));
4154 /// ParseDITemplateTypeParameter:
4155 /// ::= !DITemplateTypeParameter(name: "Ty", type: !1)
4156 bool LLParser::ParseDITemplateTypeParameter(MDNode *&Result, bool IsDistinct) {
4157 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4158 OPTIONAL(name, MDStringField, ); \
4159 REQUIRED(type, MDField, );
4161 #undef VISIT_MD_FIELDS
4164 GET_OR_DISTINCT(DITemplateTypeParameter, (Context, name.Val, type.Val));
4168 /// ParseDITemplateValueParameter:
4169 /// ::= !DITemplateValueParameter(tag: DW_TAG_template_value_parameter,
4170 /// name: "V", type: !1, value: i32 7)
4171 bool LLParser::ParseDITemplateValueParameter(MDNode *&Result, bool IsDistinct) {
4172 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4173 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_template_value_parameter)); \
4174 OPTIONAL(name, MDStringField, ); \
4175 OPTIONAL(type, MDField, ); \
4176 REQUIRED(value, MDField, );
4178 #undef VISIT_MD_FIELDS
4180 Result = GET_OR_DISTINCT(DITemplateValueParameter,
4181 (Context, tag.Val, name.Val, type.Val, value.Val));
4185 /// ParseDIGlobalVariable:
4186 /// ::= !DIGlobalVariable(scope: !0, name: "foo", linkageName: "foo",
4187 /// file: !1, line: 7, type: !2, isLocal: false,
4188 /// isDefinition: true, variable: i32* @foo,
4189 /// declaration: !3, align: 8)
4190 bool LLParser::ParseDIGlobalVariable(MDNode *&Result, bool IsDistinct) {
4191 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4192 REQUIRED(name, MDStringField, (/* AllowEmpty */ false)); \
4193 OPTIONAL(scope, MDField, ); \
4194 OPTIONAL(linkageName, MDStringField, ); \
4195 OPTIONAL(file, MDField, ); \
4196 OPTIONAL(line, LineField, ); \
4197 OPTIONAL(type, MDField, ); \
4198 OPTIONAL(isLocal, MDBoolField, ); \
4199 OPTIONAL(isDefinition, MDBoolField, (true)); \
4200 OPTIONAL(expr, MDField, ); \
4201 OPTIONAL(declaration, MDField, ); \
4202 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX));
4204 #undef VISIT_MD_FIELDS
4206 Result = GET_OR_DISTINCT(DIGlobalVariable,
4207 (Context, scope.Val, name.Val, linkageName.Val,
4208 file.Val, line.Val, type.Val, isLocal.Val,
4209 isDefinition.Val, expr.Val, declaration.Val,
4214 /// ParseDILocalVariable:
4215 /// ::= !DILocalVariable(arg: 7, scope: !0, name: "foo",
4216 /// file: !1, line: 7, type: !2, arg: 2, flags: 7,
4218 /// ::= !DILocalVariable(scope: !0, name: "foo",
4219 /// file: !1, line: 7, type: !2, arg: 2, flags: 7,
4221 bool LLParser::ParseDILocalVariable(MDNode *&Result, bool IsDistinct) {
4222 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4223 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
4224 OPTIONAL(name, MDStringField, ); \
4225 OPTIONAL(arg, MDUnsignedField, (0, UINT16_MAX)); \
4226 OPTIONAL(file, MDField, ); \
4227 OPTIONAL(line, LineField, ); \
4228 OPTIONAL(type, MDField, ); \
4229 OPTIONAL(flags, DIFlagField, ); \
4230 OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX));
4232 #undef VISIT_MD_FIELDS
4234 Result = GET_OR_DISTINCT(DILocalVariable,
4235 (Context, scope.Val, name.Val, file.Val, line.Val,
4236 type.Val, arg.Val, flags.Val, align.Val));
4240 /// ParseDIExpression:
4241 /// ::= !DIExpression(0, 7, -1)
4242 bool LLParser::ParseDIExpression(MDNode *&Result, bool IsDistinct) {
4243 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
4246 if (ParseToken(lltok::lparen, "expected '(' here"))
4249 SmallVector<uint64_t, 8> Elements;
4250 if (Lex.getKind() != lltok::rparen)
4252 if (Lex.getKind() == lltok::DwarfOp) {
4253 if (unsigned Op = dwarf::getOperationEncoding(Lex.getStrVal())) {
4255 Elements.push_back(Op);
4258 return TokError(Twine("invalid DWARF op '") + Lex.getStrVal() + "'");
4261 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
4262 return TokError("expected unsigned integer");
4264 auto &U = Lex.getAPSIntVal();
4265 if (U.ugt(UINT64_MAX))
4266 return TokError("element too large, limit is " + Twine(UINT64_MAX));
4267 Elements.push_back(U.getZExtValue());
4269 } while (EatIfPresent(lltok::comma));
4271 if (ParseToken(lltok::rparen, "expected ')' here"))
4274 Result = GET_OR_DISTINCT(DIExpression, (Context, Elements));
4278 /// ParseDIObjCProperty:
4279 /// ::= !DIObjCProperty(name: "foo", file: !1, line: 7, setter: "setFoo",
4280 /// getter: "getFoo", attributes: 7, type: !2)
4281 bool LLParser::ParseDIObjCProperty(MDNode *&Result, bool IsDistinct) {
4282 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4283 OPTIONAL(name, MDStringField, ); \
4284 OPTIONAL(file, MDField, ); \
4285 OPTIONAL(line, LineField, ); \
4286 OPTIONAL(setter, MDStringField, ); \
4287 OPTIONAL(getter, MDStringField, ); \
4288 OPTIONAL(attributes, MDUnsignedField, (0, UINT32_MAX)); \
4289 OPTIONAL(type, MDField, );
4291 #undef VISIT_MD_FIELDS
4293 Result = GET_OR_DISTINCT(DIObjCProperty,
4294 (Context, name.Val, file.Val, line.Val, setter.Val,
4295 getter.Val, attributes.Val, type.Val));
4299 /// ParseDIImportedEntity:
4300 /// ::= !DIImportedEntity(tag: DW_TAG_imported_module, scope: !0, entity: !1,
4301 /// line: 7, name: "foo")
4302 bool LLParser::ParseDIImportedEntity(MDNode *&Result, bool IsDistinct) {
4303 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
4304 REQUIRED(tag, DwarfTagField, ); \
4305 REQUIRED(scope, MDField, ); \
4306 OPTIONAL(entity, MDField, ); \
4307 OPTIONAL(line, LineField, ); \
4308 OPTIONAL(name, MDStringField, );
4310 #undef VISIT_MD_FIELDS
4312 Result = GET_OR_DISTINCT(DIImportedEntity, (Context, tag.Val, scope.Val,
4313 entity.Val, line.Val, name.Val));
4317 #undef PARSE_MD_FIELD
4319 #undef REQUIRE_FIELD
4320 #undef DECLARE_FIELD
4322 /// ParseMetadataAsValue
4323 /// ::= metadata i32 %local
4324 /// ::= metadata i32 @global
4325 /// ::= metadata i32 7
4327 /// ::= metadata !{...}
4328 /// ::= metadata !"string"
4329 bool LLParser::ParseMetadataAsValue(Value *&V, PerFunctionState &PFS) {
4330 // Note: the type 'metadata' has already been parsed.
4332 if (ParseMetadata(MD, &PFS))
4335 V = MetadataAsValue::get(Context, MD);
4339 /// ParseValueAsMetadata
4343 bool LLParser::ParseValueAsMetadata(Metadata *&MD, const Twine &TypeMsg,
4344 PerFunctionState *PFS) {
4347 if (ParseType(Ty, TypeMsg, Loc))
4349 if (Ty->isMetadataTy())
4350 return Error(Loc, "invalid metadata-value-metadata roundtrip");
4353 if (ParseValue(Ty, V, PFS))
4356 MD = ValueAsMetadata::get(V);
4367 /// ::= !DILocation(...)
4368 bool LLParser::ParseMetadata(Metadata *&MD, PerFunctionState *PFS) {
4369 if (Lex.getKind() == lltok::MetadataVar) {
4371 if (ParseSpecializedMDNode(N))
4379 if (Lex.getKind() != lltok::exclaim)
4380 return ParseValueAsMetadata(MD, "expected metadata operand", PFS);
4383 assert(Lex.getKind() == lltok::exclaim && "Expected '!' here");
4387 // ::= '!' STRINGCONSTANT
4388 if (Lex.getKind() == lltok::StringConstant) {
4390 if (ParseMDString(S))
4400 if (ParseMDNodeTail(N))
4406 //===----------------------------------------------------------------------===//
4407 // Function Parsing.
4408 //===----------------------------------------------------------------------===//
4410 bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
4411 PerFunctionState *PFS) {
4412 if (Ty->isFunctionTy())
4413 return Error(ID.Loc, "functions are not values, refer to them as pointers");
4416 case ValID::t_LocalID:
4417 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
4418 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
4419 return V == nullptr;
4420 case ValID::t_LocalName:
4421 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
4422 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
4423 return V == nullptr;
4424 case ValID::t_InlineAsm: {
4425 if (!ID.FTy || !InlineAsm::Verify(ID.FTy, ID.StrVal2))
4426 return Error(ID.Loc, "invalid type for inline asm constraint string");
4427 V = InlineAsm::get(ID.FTy, ID.StrVal, ID.StrVal2, ID.UIntVal & 1,
4428 (ID.UIntVal >> 1) & 1,
4429 (InlineAsm::AsmDialect(ID.UIntVal >> 2)));
4432 case ValID::t_GlobalName:
4433 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
4434 return V == nullptr;
4435 case ValID::t_GlobalID:
4436 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
4437 return V == nullptr;
4438 case ValID::t_APSInt:
4439 if (!Ty->isIntegerTy())
4440 return Error(ID.Loc, "integer constant must have integer type");
4441 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
4442 V = ConstantInt::get(Context, ID.APSIntVal);
4444 case ValID::t_APFloat:
4445 if (!Ty->isFloatingPointTy() ||
4446 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
4447 return Error(ID.Loc, "floating point constant invalid for type");
4449 // The lexer has no type info, so builds all half, float, and double FP
4450 // constants as double. Fix this here. Long double does not need this.
4451 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble) {
4454 ID.APFloatVal.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven,
4456 else if (Ty->isFloatTy())
4457 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
4460 V = ConstantFP::get(Context, ID.APFloatVal);
4462 if (V->getType() != Ty)
4463 return Error(ID.Loc, "floating point constant does not have type '" +
4464 getTypeString(Ty) + "'");
4468 if (!Ty->isPointerTy())
4469 return Error(ID.Loc, "null must be a pointer type");
4470 V = ConstantPointerNull::get(cast<PointerType>(Ty));
4472 case ValID::t_Undef:
4473 // FIXME: LabelTy should not be a first-class type.
4474 if (!Ty->isFirstClassType() || Ty->isLabelTy())
4475 return Error(ID.Loc, "invalid type for undef constant");
4476 V = UndefValue::get(Ty);
4478 case ValID::t_EmptyArray:
4479 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
4480 return Error(ID.Loc, "invalid empty array initializer");
4481 V = UndefValue::get(Ty);
4484 // FIXME: LabelTy should not be a first-class type.
4485 if (!Ty->isFirstClassType() || Ty->isLabelTy())
4486 return Error(ID.Loc, "invalid type for null constant");
4487 V = Constant::getNullValue(Ty);
4490 if (!Ty->isTokenTy())
4491 return Error(ID.Loc, "invalid type for none constant");
4492 V = Constant::getNullValue(Ty);
4494 case ValID::t_Constant:
4495 if (ID.ConstantVal->getType() != Ty)
4496 return Error(ID.Loc, "constant expression type mismatch");
4500 case ValID::t_ConstantStruct:
4501 case ValID::t_PackedConstantStruct:
4502 if (StructType *ST = dyn_cast<StructType>(Ty)) {
4503 if (ST->getNumElements() != ID.UIntVal)
4504 return Error(ID.Loc,
4505 "initializer with struct type has wrong # elements");
4506 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
4507 return Error(ID.Loc, "packed'ness of initializer and type don't match");
4509 // Verify that the elements are compatible with the structtype.
4510 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
4511 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
4512 return Error(ID.Loc, "element " + Twine(i) +
4513 " of struct initializer doesn't match struct element type");
4515 V = ConstantStruct::get(
4516 ST, makeArrayRef(ID.ConstantStructElts.get(), ID.UIntVal));
4518 return Error(ID.Loc, "constant expression type mismatch");
4521 llvm_unreachable("Invalid ValID");
4524 bool LLParser::parseConstantValue(Type *Ty, Constant *&C) {
4527 auto Loc = Lex.getLoc();
4528 if (ParseValID(ID, /*PFS=*/nullptr))
4531 case ValID::t_APSInt:
4532 case ValID::t_APFloat:
4533 case ValID::t_Undef:
4534 case ValID::t_Constant:
4535 case ValID::t_ConstantStruct:
4536 case ValID::t_PackedConstantStruct: {
4538 if (ConvertValIDToValue(Ty, ID, V, /*PFS=*/nullptr))
4540 assert(isa<Constant>(V) && "Expected a constant value");
4541 C = cast<Constant>(V);
4545 return Error(Loc, "expected a constant value");
4549 bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS) {
4552 return ParseValID(ID, PFS) || ConvertValIDToValue(Ty, ID, V, PFS);
4555 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
4557 return ParseType(Ty) ||
4558 ParseValue(Ty, V, PFS);
4561 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
4562 PerFunctionState &PFS) {
4565 if (ParseTypeAndValue(V, PFS)) return true;
4566 if (!isa<BasicBlock>(V))
4567 return Error(Loc, "expected a basic block");
4568 BB = cast<BasicBlock>(V);
4573 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
4574 /// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
4575 /// OptionalAlign OptGC OptionalPrefix OptionalPrologue OptPersonalityFn
4576 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
4577 // Parse the linkage.
4578 LocTy LinkageLoc = Lex.getLoc();
4581 unsigned Visibility;
4582 unsigned DLLStorageClass;
4583 AttrBuilder RetAttrs;
4586 Type *RetType = nullptr;
4587 LocTy RetTypeLoc = Lex.getLoc();
4588 if (ParseOptionalLinkage(Linkage, HasLinkage, Visibility, DLLStorageClass) ||
4589 ParseOptionalCallingConv(CC) || ParseOptionalReturnAttrs(RetAttrs) ||
4590 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
4593 // Verify that the linkage is ok.
4594 switch ((GlobalValue::LinkageTypes)Linkage) {
4595 case GlobalValue::ExternalLinkage:
4596 break; // always ok.
4597 case GlobalValue::ExternalWeakLinkage:
4599 return Error(LinkageLoc, "invalid linkage for function definition");
4601 case GlobalValue::PrivateLinkage:
4602 case GlobalValue::InternalLinkage:
4603 case GlobalValue::AvailableExternallyLinkage:
4604 case GlobalValue::LinkOnceAnyLinkage:
4605 case GlobalValue::LinkOnceODRLinkage:
4606 case GlobalValue::WeakAnyLinkage:
4607 case GlobalValue::WeakODRLinkage:
4609 return Error(LinkageLoc, "invalid linkage for function declaration");
4611 case GlobalValue::AppendingLinkage:
4612 case GlobalValue::CommonLinkage:
4613 return Error(LinkageLoc, "invalid function linkage type");
4616 if (!isValidVisibilityForLinkage(Visibility, Linkage))
4617 return Error(LinkageLoc,
4618 "symbol with local linkage must have default visibility");
4620 if (!FunctionType::isValidReturnType(RetType))
4621 return Error(RetTypeLoc, "invalid function return type");
4623 LocTy NameLoc = Lex.getLoc();
4625 std::string FunctionName;
4626 if (Lex.getKind() == lltok::GlobalVar) {
4627 FunctionName = Lex.getStrVal();
4628 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
4629 unsigned NameID = Lex.getUIntVal();
4631 if (NameID != NumberedVals.size())
4632 return TokError("function expected to be numbered '%" +
4633 Twine(NumberedVals.size()) + "'");
4635 return TokError("expected function name");
4640 if (Lex.getKind() != lltok::lparen)
4641 return TokError("expected '(' in function argument list");
4643 SmallVector<ArgInfo, 8> ArgList;
4645 AttrBuilder FuncAttrs;
4646 std::vector<unsigned> FwdRefAttrGrps;
4648 std::string Section;
4651 GlobalValue::UnnamedAddr UnnamedAddr = GlobalValue::UnnamedAddr::None;
4652 LocTy UnnamedAddrLoc;
4653 Constant *Prefix = nullptr;
4654 Constant *Prologue = nullptr;
4655 Constant *PersonalityFn = nullptr;
4658 if (ParseArgumentList(ArgList, isVarArg) ||
4659 ParseOptionalUnnamedAddr(UnnamedAddr) ||
4660 ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false,
4662 (EatIfPresent(lltok::kw_section) &&
4663 ParseStringConstant(Section)) ||
4664 parseOptionalComdat(FunctionName, C) ||
4665 ParseOptionalAlignment(Alignment) ||
4666 (EatIfPresent(lltok::kw_gc) &&
4667 ParseStringConstant(GC)) ||
4668 (EatIfPresent(lltok::kw_prefix) &&
4669 ParseGlobalTypeAndValue(Prefix)) ||
4670 (EatIfPresent(lltok::kw_prologue) &&
4671 ParseGlobalTypeAndValue(Prologue)) ||
4672 (EatIfPresent(lltok::kw_personality) &&
4673 ParseGlobalTypeAndValue(PersonalityFn)))
4676 if (FuncAttrs.contains(Attribute::Builtin))
4677 return Error(BuiltinLoc, "'builtin' attribute not valid on function");
4679 // If the alignment was parsed as an attribute, move to the alignment field.
4680 if (FuncAttrs.hasAlignmentAttr()) {
4681 Alignment = FuncAttrs.getAlignment();
4682 FuncAttrs.removeAttribute(Attribute::Alignment);
4685 // Okay, if we got here, the function is syntactically valid. Convert types
4686 // and do semantic checks.
4687 std::vector<Type*> ParamTypeList;
4688 SmallVector<AttributeSet, 8> Attrs;
4690 if (RetAttrs.hasAttributes())
4691 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4692 AttributeSet::ReturnIndex,
4695 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
4696 ParamTypeList.push_back(ArgList[i].Ty);
4697 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
4698 AttrBuilder B(ArgList[i].Attrs, i + 1);
4699 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
4703 if (FuncAttrs.hasAttributes())
4704 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4705 AttributeSet::FunctionIndex,
4708 AttributeSet PAL = AttributeSet::get(Context, Attrs);
4710 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
4711 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
4714 FunctionType::get(RetType, ParamTypeList, isVarArg);
4715 PointerType *PFT = PointerType::getUnqual(FT);
4718 if (!FunctionName.empty()) {
4719 // If this was a definition of a forward reference, remove the definition
4720 // from the forward reference table and fill in the forward ref.
4721 auto FRVI = ForwardRefVals.find(FunctionName);
4722 if (FRVI != ForwardRefVals.end()) {
4723 Fn = M->getFunction(FunctionName);
4725 return Error(FRVI->second.second, "invalid forward reference to "
4726 "function as global value!");
4727 if (Fn->getType() != PFT)
4728 return Error(FRVI->second.second, "invalid forward reference to "
4729 "function '" + FunctionName + "' with wrong type!");
4731 ForwardRefVals.erase(FRVI);
4732 } else if ((Fn = M->getFunction(FunctionName))) {
4733 // Reject redefinitions.
4734 return Error(NameLoc, "invalid redefinition of function '" +
4735 FunctionName + "'");
4736 } else if (M->getNamedValue(FunctionName)) {
4737 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
4741 // If this is a definition of a forward referenced function, make sure the
4743 auto I = ForwardRefValIDs.find(NumberedVals.size());
4744 if (I != ForwardRefValIDs.end()) {
4745 Fn = cast<Function>(I->second.first);
4746 if (Fn->getType() != PFT)
4747 return Error(NameLoc, "type of definition and forward reference of '@" +
4748 Twine(NumberedVals.size()) + "' disagree");
4749 ForwardRefValIDs.erase(I);
4754 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
4755 else // Move the forward-reference to the correct spot in the module.
4756 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
4758 if (FunctionName.empty())
4759 NumberedVals.push_back(Fn);
4761 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
4762 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
4763 Fn->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
4764 Fn->setCallingConv(CC);
4765 Fn->setAttributes(PAL);
4766 Fn->setUnnamedAddr(UnnamedAddr);
4767 Fn->setAlignment(Alignment);
4768 Fn->setSection(Section);
4770 Fn->setPersonalityFn(PersonalityFn);
4771 if (!GC.empty()) Fn->setGC(GC);
4772 Fn->setPrefixData(Prefix);
4773 Fn->setPrologueData(Prologue);
4774 ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
4776 // Add all of the arguments we parsed to the function.
4777 Function::arg_iterator ArgIt = Fn->arg_begin();
4778 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
4779 // If the argument has a name, insert it into the argument symbol table.
4780 if (ArgList[i].Name.empty()) continue;
4782 // Set the name, if it conflicted, it will be auto-renamed.
4783 ArgIt->setName(ArgList[i].Name);
4785 if (ArgIt->getName() != ArgList[i].Name)
4786 return Error(ArgList[i].Loc, "redefinition of argument '%" +
4787 ArgList[i].Name + "'");
4793 // Check the declaration has no block address forward references.
4795 if (FunctionName.empty()) {
4796 ID.Kind = ValID::t_GlobalID;
4797 ID.UIntVal = NumberedVals.size() - 1;
4799 ID.Kind = ValID::t_GlobalName;
4800 ID.StrVal = FunctionName;
4802 auto Blocks = ForwardRefBlockAddresses.find(ID);
4803 if (Blocks != ForwardRefBlockAddresses.end())
4804 return Error(Blocks->first.Loc,
4805 "cannot take blockaddress inside a declaration");
4809 bool LLParser::PerFunctionState::resolveForwardRefBlockAddresses() {
4811 if (FunctionNumber == -1) {
4812 ID.Kind = ValID::t_GlobalName;
4813 ID.StrVal = F.getName();
4815 ID.Kind = ValID::t_GlobalID;
4816 ID.UIntVal = FunctionNumber;
4819 auto Blocks = P.ForwardRefBlockAddresses.find(ID);
4820 if (Blocks == P.ForwardRefBlockAddresses.end())
4823 for (const auto &I : Blocks->second) {
4824 const ValID &BBID = I.first;
4825 GlobalValue *GV = I.second;
4827 assert((BBID.Kind == ValID::t_LocalID || BBID.Kind == ValID::t_LocalName) &&
4828 "Expected local id or name");
4830 if (BBID.Kind == ValID::t_LocalName)
4831 BB = GetBB(BBID.StrVal, BBID.Loc);
4833 BB = GetBB(BBID.UIntVal, BBID.Loc);
4835 return P.Error(BBID.Loc, "referenced value is not a basic block");
4837 GV->replaceAllUsesWith(BlockAddress::get(&F, BB));
4838 GV->eraseFromParent();
4841 P.ForwardRefBlockAddresses.erase(Blocks);
4845 /// ParseFunctionBody
4846 /// ::= '{' BasicBlock+ UseListOrderDirective* '}'
4847 bool LLParser::ParseFunctionBody(Function &Fn) {
4848 if (Lex.getKind() != lltok::lbrace)
4849 return TokError("expected '{' in function body");
4850 Lex.Lex(); // eat the {.
4852 int FunctionNumber = -1;
4853 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
4855 PerFunctionState PFS(*this, Fn, FunctionNumber);
4857 // Resolve block addresses and allow basic blocks to be forward-declared
4858 // within this function.
4859 if (PFS.resolveForwardRefBlockAddresses())
4861 SaveAndRestore<PerFunctionState *> ScopeExit(BlockAddressPFS, &PFS);
4863 // We need at least one basic block.
4864 if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_uselistorder)
4865 return TokError("function body requires at least one basic block");
4867 while (Lex.getKind() != lltok::rbrace &&
4868 Lex.getKind() != lltok::kw_uselistorder)
4869 if (ParseBasicBlock(PFS)) return true;
4871 while (Lex.getKind() != lltok::rbrace)
4872 if (ParseUseListOrder(&PFS))
4878 // Verify function is ok.
4879 return PFS.FinishFunction();
4883 /// ::= LabelStr? Instruction*
4884 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
4885 // If this basic block starts out with a name, remember it.
4887 LocTy NameLoc = Lex.getLoc();
4888 if (Lex.getKind() == lltok::LabelStr) {
4889 Name = Lex.getStrVal();
4893 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
4895 return Error(NameLoc,
4896 "unable to create block named '" + Name + "'");
4898 std::string NameStr;
4900 // Parse the instructions in this block until we get a terminator.
4903 // This instruction may have three possibilities for a name: a) none
4904 // specified, b) name specified "%foo =", c) number specified: "%4 =".
4905 LocTy NameLoc = Lex.getLoc();
4909 if (Lex.getKind() == lltok::LocalVarID) {
4910 NameID = Lex.getUIntVal();
4912 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
4914 } else if (Lex.getKind() == lltok::LocalVar) {
4915 NameStr = Lex.getStrVal();
4917 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
4921 switch (ParseInstruction(Inst, BB, PFS)) {
4922 default: llvm_unreachable("Unknown ParseInstruction result!");
4923 case InstError: return true;
4925 BB->getInstList().push_back(Inst);
4927 // With a normal result, we check to see if the instruction is followed by
4928 // a comma and metadata.
4929 if (EatIfPresent(lltok::comma))
4930 if (ParseInstructionMetadata(*Inst))
4933 case InstExtraComma:
4934 BB->getInstList().push_back(Inst);
4936 // If the instruction parser ate an extra comma at the end of it, it
4937 // *must* be followed by metadata.
4938 if (ParseInstructionMetadata(*Inst))
4943 // Set the name on the instruction.
4944 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
4945 } while (!isa<TerminatorInst>(Inst));
4950 //===----------------------------------------------------------------------===//
4951 // Instruction Parsing.
4952 //===----------------------------------------------------------------------===//
4954 /// ParseInstruction - Parse one of the many different instructions.
4956 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
4957 PerFunctionState &PFS) {
4958 lltok::Kind Token = Lex.getKind();
4959 if (Token == lltok::Eof)
4960 return TokError("found end of file when expecting more instructions");
4961 LocTy Loc = Lex.getLoc();
4962 unsigned KeywordVal = Lex.getUIntVal();
4963 Lex.Lex(); // Eat the keyword.
4966 default: return Error(Loc, "expected instruction opcode");
4967 // Terminator Instructions.
4968 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
4969 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
4970 case lltok::kw_br: return ParseBr(Inst, PFS);
4971 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
4972 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
4973 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
4974 case lltok::kw_resume: return ParseResume(Inst, PFS);
4975 case lltok::kw_cleanupret: return ParseCleanupRet(Inst, PFS);
4976 case lltok::kw_catchret: return ParseCatchRet(Inst, PFS);
4977 case lltok::kw_catchswitch: return ParseCatchSwitch(Inst, PFS);
4978 case lltok::kw_catchpad: return ParseCatchPad(Inst, PFS);
4979 case lltok::kw_cleanuppad: return ParseCleanupPad(Inst, PFS);
4980 // Binary Operators.
4984 case lltok::kw_shl: {
4985 bool NUW = EatIfPresent(lltok::kw_nuw);
4986 bool NSW = EatIfPresent(lltok::kw_nsw);
4987 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
4989 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
4991 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
4992 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
4995 case lltok::kw_fadd:
4996 case lltok::kw_fsub:
4997 case lltok::kw_fmul:
4998 case lltok::kw_fdiv:
4999 case lltok::kw_frem: {
5000 FastMathFlags FMF = EatFastMathFlagsIfPresent();
5001 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
5005 Inst->setFastMathFlags(FMF);
5009 case lltok::kw_sdiv:
5010 case lltok::kw_udiv:
5011 case lltok::kw_lshr:
5012 case lltok::kw_ashr: {
5013 bool Exact = EatIfPresent(lltok::kw_exact);
5015 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
5016 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
5020 case lltok::kw_urem:
5021 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
5024 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
5025 case lltok::kw_icmp: return ParseCompare(Inst, PFS, KeywordVal);
5026 case lltok::kw_fcmp: {
5027 FastMathFlags FMF = EatFastMathFlagsIfPresent();
5028 int Res = ParseCompare(Inst, PFS, KeywordVal);
5032 Inst->setFastMathFlags(FMF);
5037 case lltok::kw_trunc:
5038 case lltok::kw_zext:
5039 case lltok::kw_sext:
5040 case lltok::kw_fptrunc:
5041 case lltok::kw_fpext:
5042 case lltok::kw_bitcast:
5043 case lltok::kw_addrspacecast:
5044 case lltok::kw_uitofp:
5045 case lltok::kw_sitofp:
5046 case lltok::kw_fptoui:
5047 case lltok::kw_fptosi:
5048 case lltok::kw_inttoptr:
5049 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
5051 case lltok::kw_select: return ParseSelect(Inst, PFS);
5052 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
5053 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
5054 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
5055 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
5056 case lltok::kw_phi: return ParsePHI(Inst, PFS);
5057 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
5059 case lltok::kw_call: return ParseCall(Inst, PFS, CallInst::TCK_None);
5060 case lltok::kw_tail: return ParseCall(Inst, PFS, CallInst::TCK_Tail);
5061 case lltok::kw_musttail: return ParseCall(Inst, PFS, CallInst::TCK_MustTail);
5062 case lltok::kw_notail: return ParseCall(Inst, PFS, CallInst::TCK_NoTail);
5064 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
5065 case lltok::kw_load: return ParseLoad(Inst, PFS);
5066 case lltok::kw_store: return ParseStore(Inst, PFS);
5067 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
5068 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
5069 case lltok::kw_fence: return ParseFence(Inst, PFS);
5070 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
5071 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
5072 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
5076 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
5077 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
5078 if (Opc == Instruction::FCmp) {
5079 switch (Lex.getKind()) {
5080 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
5081 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
5082 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
5083 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
5084 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
5085 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
5086 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
5087 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
5088 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
5089 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
5090 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
5091 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
5092 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
5093 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
5094 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
5095 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
5096 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
5099 switch (Lex.getKind()) {
5100 default: return TokError("expected icmp predicate (e.g. 'eq')");
5101 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
5102 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
5103 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
5104 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
5105 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
5106 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
5107 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
5108 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
5109 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
5110 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
5117 //===----------------------------------------------------------------------===//
5118 // Terminator Instructions.
5119 //===----------------------------------------------------------------------===//
5121 /// ParseRet - Parse a return instruction.
5122 /// ::= 'ret' void (',' !dbg, !1)*
5123 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
5124 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
5125 PerFunctionState &PFS) {
5126 SMLoc TypeLoc = Lex.getLoc();
5128 if (ParseType(Ty, true /*void allowed*/)) return true;
5130 Type *ResType = PFS.getFunction().getReturnType();
5132 if (Ty->isVoidTy()) {
5133 if (!ResType->isVoidTy())
5134 return Error(TypeLoc, "value doesn't match function result type '" +
5135 getTypeString(ResType) + "'");
5137 Inst = ReturnInst::Create(Context);
5142 if (ParseValue(Ty, RV, PFS)) return true;
5144 if (ResType != RV->getType())
5145 return Error(TypeLoc, "value doesn't match function result type '" +
5146 getTypeString(ResType) + "'");
5148 Inst = ReturnInst::Create(Context, RV);
5153 /// ::= 'br' TypeAndValue
5154 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5155 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
5158 BasicBlock *Op1, *Op2;
5159 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
5161 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
5162 Inst = BranchInst::Create(BB);
5166 if (Op0->getType() != Type::getInt1Ty(Context))
5167 return Error(Loc, "branch condition must have 'i1' type");
5169 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
5170 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
5171 ParseToken(lltok::comma, "expected ',' after true destination") ||
5172 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
5175 Inst = BranchInst::Create(Op1, Op2, Op0);
5181 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
5183 /// ::= (TypeAndValue ',' TypeAndValue)*
5184 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
5185 LocTy CondLoc, BBLoc;
5187 BasicBlock *DefaultBB;
5188 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
5189 ParseToken(lltok::comma, "expected ',' after switch condition") ||
5190 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
5191 ParseToken(lltok::lsquare, "expected '[' with switch table"))
5194 if (!Cond->getType()->isIntegerTy())
5195 return Error(CondLoc, "switch condition must have integer type");
5197 // Parse the jump table pairs.
5198 SmallPtrSet<Value*, 32> SeenCases;
5199 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
5200 while (Lex.getKind() != lltok::rsquare) {
5204 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
5205 ParseToken(lltok::comma, "expected ',' after case value") ||
5206 ParseTypeAndBasicBlock(DestBB, PFS))
5209 if (!SeenCases.insert(Constant).second)
5210 return Error(CondLoc, "duplicate case value in switch");
5211 if (!isa<ConstantInt>(Constant))
5212 return Error(CondLoc, "case value is not a constant integer");
5214 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
5217 Lex.Lex(); // Eat the ']'.
5219 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
5220 for (unsigned i = 0, e = Table.size(); i != e; ++i)
5221 SI->addCase(Table[i].first, Table[i].second);
5228 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
5229 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
5232 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
5233 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
5234 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
5237 if (!Address->getType()->isPointerTy())
5238 return Error(AddrLoc, "indirectbr address must have pointer type");
5240 // Parse the destination list.
5241 SmallVector<BasicBlock*, 16> DestList;
5243 if (Lex.getKind() != lltok::rsquare) {
5245 if (ParseTypeAndBasicBlock(DestBB, PFS))
5247 DestList.push_back(DestBB);
5249 while (EatIfPresent(lltok::comma)) {
5250 if (ParseTypeAndBasicBlock(DestBB, PFS))
5252 DestList.push_back(DestBB);
5256 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
5259 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
5260 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
5261 IBI->addDestination(DestList[i]);
5267 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
5268 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
5269 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
5270 LocTy CallLoc = Lex.getLoc();
5271 AttrBuilder RetAttrs, FnAttrs;
5272 std::vector<unsigned> FwdRefAttrGrps;
5275 Type *RetType = nullptr;
5278 SmallVector<ParamInfo, 16> ArgList;
5279 SmallVector<OperandBundleDef, 2> BundleList;
5281 BasicBlock *NormalBB, *UnwindBB;
5282 if (ParseOptionalCallingConv(CC) || ParseOptionalReturnAttrs(RetAttrs) ||
5283 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
5284 ParseValID(CalleeID) || ParseParameterList(ArgList, PFS) ||
5285 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
5287 ParseOptionalOperandBundles(BundleList, PFS) ||
5288 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
5289 ParseTypeAndBasicBlock(NormalBB, PFS) ||
5290 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
5291 ParseTypeAndBasicBlock(UnwindBB, PFS))
5294 // If RetType is a non-function pointer type, then this is the short syntax
5295 // for the call, which means that RetType is just the return type. Infer the
5296 // rest of the function argument types from the arguments that are present.
5297 FunctionType *Ty = dyn_cast<FunctionType>(RetType);
5299 // Pull out the types of all of the arguments...
5300 std::vector<Type*> ParamTypes;
5301 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
5302 ParamTypes.push_back(ArgList[i].V->getType());
5304 if (!FunctionType::isValidReturnType(RetType))
5305 return Error(RetTypeLoc, "Invalid result type for LLVM function");
5307 Ty = FunctionType::get(RetType, ParamTypes, false);
5312 // Look up the callee.
5314 if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS))
5317 // Set up the Attribute for the function.
5318 SmallVector<AttributeSet, 8> Attrs;
5319 if (RetAttrs.hasAttributes())
5320 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5321 AttributeSet::ReturnIndex,
5324 SmallVector<Value*, 8> Args;
5326 // Loop through FunctionType's arguments and ensure they are specified
5327 // correctly. Also, gather any parameter attributes.
5328 FunctionType::param_iterator I = Ty->param_begin();
5329 FunctionType::param_iterator E = Ty->param_end();
5330 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
5331 Type *ExpectedTy = nullptr;
5334 } else if (!Ty->isVarArg()) {
5335 return Error(ArgList[i].Loc, "too many arguments specified");
5338 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
5339 return Error(ArgList[i].Loc, "argument is not of expected type '" +
5340 getTypeString(ExpectedTy) + "'");
5341 Args.push_back(ArgList[i].V);
5342 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
5343 AttrBuilder B(ArgList[i].Attrs, i + 1);
5344 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
5349 return Error(CallLoc, "not enough parameters specified for call");
5351 if (FnAttrs.hasAttributes()) {
5352 if (FnAttrs.hasAlignmentAttr())
5353 return Error(CallLoc, "invoke instructions may not have an alignment");
5355 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5356 AttributeSet::FunctionIndex,
5360 // Finish off the Attribute and check them
5361 AttributeSet PAL = AttributeSet::get(Context, Attrs);
5364 InvokeInst::Create(Ty, Callee, NormalBB, UnwindBB, Args, BundleList);
5365 II->setCallingConv(CC);
5366 II->setAttributes(PAL);
5367 ForwardRefAttrGroups[II] = FwdRefAttrGrps;
5373 /// ::= 'resume' TypeAndValue
5374 bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
5375 Value *Exn; LocTy ExnLoc;
5376 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
5379 ResumeInst *RI = ResumeInst::Create(Exn);
5384 bool LLParser::ParseExceptionArgs(SmallVectorImpl<Value *> &Args,
5385 PerFunctionState &PFS) {
5386 if (ParseToken(lltok::lsquare, "expected '[' in catchpad/cleanuppad"))
5389 while (Lex.getKind() != lltok::rsquare) {
5390 // If this isn't the first argument, we need a comma.
5391 if (!Args.empty() &&
5392 ParseToken(lltok::comma, "expected ',' in argument list"))
5395 // Parse the argument.
5397 Type *ArgTy = nullptr;
5398 if (ParseType(ArgTy, ArgLoc))
5402 if (ArgTy->isMetadataTy()) {
5403 if (ParseMetadataAsValue(V, PFS))
5406 if (ParseValue(ArgTy, V, PFS))
5412 Lex.Lex(); // Lex the ']'.
5417 /// ::= 'cleanupret' from Value unwind ('to' 'caller' | TypeAndValue)
5418 bool LLParser::ParseCleanupRet(Instruction *&Inst, PerFunctionState &PFS) {
5419 Value *CleanupPad = nullptr;
5421 if (ParseToken(lltok::kw_from, "expected 'from' after cleanupret"))
5424 if (ParseValue(Type::getTokenTy(Context), CleanupPad, PFS))
5427 if (ParseToken(lltok::kw_unwind, "expected 'unwind' in cleanupret"))
5430 BasicBlock *UnwindBB = nullptr;
5431 if (Lex.getKind() == lltok::kw_to) {
5433 if (ParseToken(lltok::kw_caller, "expected 'caller' in cleanupret"))
5436 if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
5441 Inst = CleanupReturnInst::Create(CleanupPad, UnwindBB);
5446 /// ::= 'catchret' from Parent Value 'to' TypeAndValue
5447 bool LLParser::ParseCatchRet(Instruction *&Inst, PerFunctionState &PFS) {
5448 Value *CatchPad = nullptr;
5450 if (ParseToken(lltok::kw_from, "expected 'from' after catchret"))
5453 if (ParseValue(Type::getTokenTy(Context), CatchPad, PFS))
5457 if (ParseToken(lltok::kw_to, "expected 'to' in catchret") ||
5458 ParseTypeAndBasicBlock(BB, PFS))
5461 Inst = CatchReturnInst::Create(CatchPad, BB);
5465 /// ParseCatchSwitch
5466 /// ::= 'catchswitch' within Parent
5467 bool LLParser::ParseCatchSwitch(Instruction *&Inst, PerFunctionState &PFS) {
5471 if (ParseToken(lltok::kw_within, "expected 'within' after catchswitch"))
5474 if (Lex.getKind() != lltok::kw_none && Lex.getKind() != lltok::LocalVar &&
5475 Lex.getKind() != lltok::LocalVarID)
5476 return TokError("expected scope value for catchswitch");
5478 if (ParseValue(Type::getTokenTy(Context), ParentPad, PFS))
5481 if (ParseToken(lltok::lsquare, "expected '[' with catchswitch labels"))
5484 SmallVector<BasicBlock *, 32> Table;
5487 if (ParseTypeAndBasicBlock(DestBB, PFS))
5489 Table.push_back(DestBB);
5490 } while (EatIfPresent(lltok::comma));
5492 if (ParseToken(lltok::rsquare, "expected ']' after catchswitch labels"))
5495 if (ParseToken(lltok::kw_unwind,
5496 "expected 'unwind' after catchswitch scope"))
5499 BasicBlock *UnwindBB = nullptr;
5500 if (EatIfPresent(lltok::kw_to)) {
5501 if (ParseToken(lltok::kw_caller, "expected 'caller' in catchswitch"))
5504 if (ParseTypeAndBasicBlock(UnwindBB, PFS))
5509 CatchSwitchInst::Create(ParentPad, UnwindBB, Table.size());
5510 for (BasicBlock *DestBB : Table)
5511 CatchSwitch->addHandler(DestBB);
5517 /// ::= 'catchpad' ParamList 'to' TypeAndValue 'unwind' TypeAndValue
5518 bool LLParser::ParseCatchPad(Instruction *&Inst, PerFunctionState &PFS) {
5519 Value *CatchSwitch = nullptr;
5521 if (ParseToken(lltok::kw_within, "expected 'within' after catchpad"))
5524 if (Lex.getKind() != lltok::LocalVar && Lex.getKind() != lltok::LocalVarID)
5525 return TokError("expected scope value for catchpad");
5527 if (ParseValue(Type::getTokenTy(Context), CatchSwitch, PFS))
5530 SmallVector<Value *, 8> Args;
5531 if (ParseExceptionArgs(Args, PFS))
5534 Inst = CatchPadInst::Create(CatchSwitch, Args);
5539 /// ::= 'cleanuppad' within Parent ParamList
5540 bool LLParser::ParseCleanupPad(Instruction *&Inst, PerFunctionState &PFS) {
5541 Value *ParentPad = nullptr;
5543 if (ParseToken(lltok::kw_within, "expected 'within' after cleanuppad"))
5546 if (Lex.getKind() != lltok::kw_none && Lex.getKind() != lltok::LocalVar &&
5547 Lex.getKind() != lltok::LocalVarID)
5548 return TokError("expected scope value for cleanuppad");
5550 if (ParseValue(Type::getTokenTy(Context), ParentPad, PFS))
5553 SmallVector<Value *, 8> Args;
5554 if (ParseExceptionArgs(Args, PFS))
5557 Inst = CleanupPadInst::Create(ParentPad, Args);
5561 //===----------------------------------------------------------------------===//
5562 // Binary Operators.
5563 //===----------------------------------------------------------------------===//
5566 /// ::= ArithmeticOps TypeAndValue ',' Value
5568 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
5569 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
5570 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
5571 unsigned Opc, unsigned OperandType) {
5572 LocTy Loc; Value *LHS, *RHS;
5573 if (ParseTypeAndValue(LHS, Loc, PFS) ||
5574 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
5575 ParseValue(LHS->getType(), RHS, PFS))
5579 switch (OperandType) {
5580 default: llvm_unreachable("Unknown operand type!");
5581 case 0: // int or FP.
5582 Valid = LHS->getType()->isIntOrIntVectorTy() ||
5583 LHS->getType()->isFPOrFPVectorTy();
5585 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
5586 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
5590 return Error(Loc, "invalid operand type for instruction");
5592 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
5597 /// ::= ArithmeticOps TypeAndValue ',' Value {
5598 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
5600 LocTy Loc; Value *LHS, *RHS;
5601 if (ParseTypeAndValue(LHS, Loc, PFS) ||
5602 ParseToken(lltok::comma, "expected ',' in logical operation") ||
5603 ParseValue(LHS->getType(), RHS, PFS))
5606 if (!LHS->getType()->isIntOrIntVectorTy())
5607 return Error(Loc,"instruction requires integer or integer vector operands");
5609 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
5614 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
5615 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
5616 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
5618 // Parse the integer/fp comparison predicate.
5622 if (ParseCmpPredicate(Pred, Opc) ||
5623 ParseTypeAndValue(LHS, Loc, PFS) ||
5624 ParseToken(lltok::comma, "expected ',' after compare value") ||
5625 ParseValue(LHS->getType(), RHS, PFS))
5628 if (Opc == Instruction::FCmp) {
5629 if (!LHS->getType()->isFPOrFPVectorTy())
5630 return Error(Loc, "fcmp requires floating point operands");
5631 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
5633 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
5634 if (!LHS->getType()->isIntOrIntVectorTy() &&
5635 !LHS->getType()->getScalarType()->isPointerTy())
5636 return Error(Loc, "icmp requires integer operands");
5637 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
5642 //===----------------------------------------------------------------------===//
5643 // Other Instructions.
5644 //===----------------------------------------------------------------------===//
5648 /// ::= CastOpc TypeAndValue 'to' Type
5649 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
5653 Type *DestTy = nullptr;
5654 if (ParseTypeAndValue(Op, Loc, PFS) ||
5655 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
5659 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
5660 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
5661 return Error(Loc, "invalid cast opcode for cast from '" +
5662 getTypeString(Op->getType()) + "' to '" +
5663 getTypeString(DestTy) + "'");
5665 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
5670 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5671 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
5673 Value *Op0, *Op1, *Op2;
5674 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5675 ParseToken(lltok::comma, "expected ',' after select condition") ||
5676 ParseTypeAndValue(Op1, PFS) ||
5677 ParseToken(lltok::comma, "expected ',' after select value") ||
5678 ParseTypeAndValue(Op2, PFS))
5681 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
5682 return Error(Loc, Reason);
5684 Inst = SelectInst::Create(Op0, Op1, Op2);
5689 /// ::= 'va_arg' TypeAndValue ',' Type
5690 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
5692 Type *EltTy = nullptr;
5694 if (ParseTypeAndValue(Op, PFS) ||
5695 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
5696 ParseType(EltTy, TypeLoc))
5699 if (!EltTy->isFirstClassType())
5700 return Error(TypeLoc, "va_arg requires operand with first class type");
5702 Inst = new VAArgInst(Op, EltTy);
5706 /// ParseExtractElement
5707 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
5708 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
5711 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5712 ParseToken(lltok::comma, "expected ',' after extract value") ||
5713 ParseTypeAndValue(Op1, PFS))
5716 if (!ExtractElementInst::isValidOperands(Op0, Op1))
5717 return Error(Loc, "invalid extractelement operands");
5719 Inst = ExtractElementInst::Create(Op0, Op1);
5723 /// ParseInsertElement
5724 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5725 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
5727 Value *Op0, *Op1, *Op2;
5728 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5729 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5730 ParseTypeAndValue(Op1, PFS) ||
5731 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5732 ParseTypeAndValue(Op2, PFS))
5735 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
5736 return Error(Loc, "invalid insertelement operands");
5738 Inst = InsertElementInst::Create(Op0, Op1, Op2);
5742 /// ParseShuffleVector
5743 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5744 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
5746 Value *Op0, *Op1, *Op2;
5747 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5748 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
5749 ParseTypeAndValue(Op1, PFS) ||
5750 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
5751 ParseTypeAndValue(Op2, PFS))
5754 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
5755 return Error(Loc, "invalid shufflevector operands");
5757 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
5762 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
5763 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
5764 Type *Ty = nullptr; LocTy TypeLoc;
5767 if (ParseType(Ty, TypeLoc) ||
5768 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
5769 ParseValue(Ty, Op0, PFS) ||
5770 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5771 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
5772 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
5775 bool AteExtraComma = false;
5776 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
5779 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
5781 if (!EatIfPresent(lltok::comma))
5784 if (Lex.getKind() == lltok::MetadataVar) {
5785 AteExtraComma = true;
5789 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
5790 ParseValue(Ty, Op0, PFS) ||
5791 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5792 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
5793 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
5797 if (!Ty->isFirstClassType())
5798 return Error(TypeLoc, "phi node must have first class type");
5800 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
5801 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
5802 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
5804 return AteExtraComma ? InstExtraComma : InstNormal;
5808 /// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
5810 /// ::= 'catch' TypeAndValue
5812 /// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
5813 bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
5814 Type *Ty = nullptr; LocTy TyLoc;
5816 if (ParseType(Ty, TyLoc))
5819 std::unique_ptr<LandingPadInst> LP(LandingPadInst::Create(Ty, 0));
5820 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
5822 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
5823 LandingPadInst::ClauseType CT;
5824 if (EatIfPresent(lltok::kw_catch))
5825 CT = LandingPadInst::Catch;
5826 else if (EatIfPresent(lltok::kw_filter))
5827 CT = LandingPadInst::Filter;
5829 return TokError("expected 'catch' or 'filter' clause type");
5833 if (ParseTypeAndValue(V, VLoc, PFS))
5836 // A 'catch' type expects a non-array constant. A filter clause expects an
5838 if (CT == LandingPadInst::Catch) {
5839 if (isa<ArrayType>(V->getType()))
5840 Error(VLoc, "'catch' clause has an invalid type");
5842 if (!isa<ArrayType>(V->getType()))
5843 Error(VLoc, "'filter' clause has an invalid type");
5846 Constant *CV = dyn_cast<Constant>(V);
5848 return Error(VLoc, "clause argument must be a constant");
5852 Inst = LP.release();
5857 /// ::= 'call' OptionalFastMathFlags OptionalCallingConv
5858 /// OptionalAttrs Type Value ParameterList OptionalAttrs
5859 /// ::= 'tail' 'call' OptionalFastMathFlags OptionalCallingConv
5860 /// OptionalAttrs Type Value ParameterList OptionalAttrs
5861 /// ::= 'musttail' 'call' OptionalFastMathFlags OptionalCallingConv
5862 /// OptionalAttrs Type Value ParameterList OptionalAttrs
5863 /// ::= 'notail' 'call' OptionalFastMathFlags OptionalCallingConv
5864 /// OptionalAttrs Type Value ParameterList OptionalAttrs
5865 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
5866 CallInst::TailCallKind TCK) {
5867 AttrBuilder RetAttrs, FnAttrs;
5868 std::vector<unsigned> FwdRefAttrGrps;
5871 Type *RetType = nullptr;
5874 SmallVector<ParamInfo, 16> ArgList;
5875 SmallVector<OperandBundleDef, 2> BundleList;
5876 LocTy CallLoc = Lex.getLoc();
5878 if (TCK != CallInst::TCK_None &&
5879 ParseToken(lltok::kw_call,
5880 "expected 'tail call', 'musttail call', or 'notail call'"))
5883 FastMathFlags FMF = EatFastMathFlagsIfPresent();
5885 if (ParseOptionalCallingConv(CC) || ParseOptionalReturnAttrs(RetAttrs) ||
5886 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
5887 ParseValID(CalleeID) ||
5888 ParseParameterList(ArgList, PFS, TCK == CallInst::TCK_MustTail,
5889 PFS.getFunction().isVarArg()) ||
5890 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false, BuiltinLoc) ||
5891 ParseOptionalOperandBundles(BundleList, PFS))
5894 if (FMF.any() && !RetType->isFPOrFPVectorTy())
5895 return Error(CallLoc, "fast-math-flags specified for call without "
5896 "floating-point scalar or vector return type");
5898 // If RetType is a non-function pointer type, then this is the short syntax
5899 // for the call, which means that RetType is just the return type. Infer the
5900 // rest of the function argument types from the arguments that are present.
5901 FunctionType *Ty = dyn_cast<FunctionType>(RetType);
5903 // Pull out the types of all of the arguments...
5904 std::vector<Type*> ParamTypes;
5905 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
5906 ParamTypes.push_back(ArgList[i].V->getType());
5908 if (!FunctionType::isValidReturnType(RetType))
5909 return Error(RetTypeLoc, "Invalid result type for LLVM function");
5911 Ty = FunctionType::get(RetType, ParamTypes, false);
5916 // Look up the callee.
5918 if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS))
5921 // Set up the Attribute for the function.
5922 SmallVector<AttributeSet, 8> Attrs;
5923 if (RetAttrs.hasAttributes())
5924 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5925 AttributeSet::ReturnIndex,
5928 SmallVector<Value*, 8> Args;
5930 // Loop through FunctionType's arguments and ensure they are specified
5931 // correctly. Also, gather any parameter attributes.
5932 FunctionType::param_iterator I = Ty->param_begin();
5933 FunctionType::param_iterator E = Ty->param_end();
5934 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
5935 Type *ExpectedTy = nullptr;
5938 } else if (!Ty->isVarArg()) {
5939 return Error(ArgList[i].Loc, "too many arguments specified");
5942 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
5943 return Error(ArgList[i].Loc, "argument is not of expected type '" +
5944 getTypeString(ExpectedTy) + "'");
5945 Args.push_back(ArgList[i].V);
5946 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
5947 AttrBuilder B(ArgList[i].Attrs, i + 1);
5948 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
5953 return Error(CallLoc, "not enough parameters specified for call");
5955 if (FnAttrs.hasAttributes()) {
5956 if (FnAttrs.hasAlignmentAttr())
5957 return Error(CallLoc, "call instructions may not have an alignment");
5959 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5960 AttributeSet::FunctionIndex,
5964 // Finish off the Attribute and check them
5965 AttributeSet PAL = AttributeSet::get(Context, Attrs);
5967 CallInst *CI = CallInst::Create(Ty, Callee, Args, BundleList);
5968 CI->setTailCallKind(TCK);
5969 CI->setCallingConv(CC);
5971 CI->setFastMathFlags(FMF);
5972 CI->setAttributes(PAL);
5973 ForwardRefAttrGroups[CI] = FwdRefAttrGrps;
5978 //===----------------------------------------------------------------------===//
5979 // Memory Instructions.
5980 //===----------------------------------------------------------------------===//
5983 /// ::= 'alloca' 'inalloca'? 'swifterror'? Type (',' TypeAndValue)?
5984 /// (',' 'align' i32)?
5985 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
5986 Value *Size = nullptr;
5987 LocTy SizeLoc, TyLoc;
5988 unsigned Alignment = 0;
5991 bool IsInAlloca = EatIfPresent(lltok::kw_inalloca);
5992 bool IsSwiftError = EatIfPresent(lltok::kw_swifterror);
5994 if (ParseType(Ty, TyLoc)) return true;
5996 if (Ty->isFunctionTy() || !PointerType::isValidElementType(Ty))
5997 return Error(TyLoc, "invalid type for alloca");
5999 bool AteExtraComma = false;
6000 if (EatIfPresent(lltok::comma)) {
6001 if (Lex.getKind() == lltok::kw_align) {
6002 if (ParseOptionalAlignment(Alignment)) return true;
6003 } else if (Lex.getKind() == lltok::MetadataVar) {
6004 AteExtraComma = true;
6006 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
6007 ParseOptionalCommaAlign(Alignment, AteExtraComma))
6012 if (Size && !Size->getType()->isIntegerTy())
6013 return Error(SizeLoc, "element count must have integer type");
6015 AllocaInst *AI = new AllocaInst(Ty, Size, Alignment);
6016 AI->setUsedWithInAlloca(IsInAlloca);
6017 AI->setSwiftError(IsSwiftError);
6019 return AteExtraComma ? InstExtraComma : InstNormal;
6023 /// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
6024 /// ::= 'load' 'atomic' 'volatile'? TypeAndValue
6025 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
6026 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
6027 Value *Val; LocTy Loc;
6028 unsigned Alignment = 0;
6029 bool AteExtraComma = false;
6030 bool isAtomic = false;
6031 AtomicOrdering Ordering = AtomicOrdering::NotAtomic;
6032 SynchronizationScope Scope = CrossThread;
6034 if (Lex.getKind() == lltok::kw_atomic) {
6039 bool isVolatile = false;
6040 if (Lex.getKind() == lltok::kw_volatile) {
6046 LocTy ExplicitTypeLoc = Lex.getLoc();
6047 if (ParseType(Ty) ||
6048 ParseToken(lltok::comma, "expected comma after load's type") ||
6049 ParseTypeAndValue(Val, Loc, PFS) ||
6050 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
6051 ParseOptionalCommaAlign(Alignment, AteExtraComma))
6054 if (!Val->getType()->isPointerTy() || !Ty->isFirstClassType())
6055 return Error(Loc, "load operand must be a pointer to a first class type");
6056 if (isAtomic && !Alignment)
6057 return Error(Loc, "atomic load must have explicit non-zero alignment");
6058 if (Ordering == AtomicOrdering::Release ||
6059 Ordering == AtomicOrdering::AcquireRelease)
6060 return Error(Loc, "atomic load cannot use Release ordering");
6062 if (Ty != cast<PointerType>(Val->getType())->getElementType())
6063 return Error(ExplicitTypeLoc,
6064 "explicit pointee type doesn't match operand's pointee type");
6066 Inst = new LoadInst(Ty, Val, "", isVolatile, Alignment, Ordering, Scope);
6067 return AteExtraComma ? InstExtraComma : InstNormal;
6072 /// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
6073 /// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
6074 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
6075 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
6076 Value *Val, *Ptr; LocTy Loc, PtrLoc;
6077 unsigned Alignment = 0;
6078 bool AteExtraComma = false;
6079 bool isAtomic = false;
6080 AtomicOrdering Ordering = AtomicOrdering::NotAtomic;
6081 SynchronizationScope Scope = CrossThread;
6083 if (Lex.getKind() == lltok::kw_atomic) {
6088 bool isVolatile = false;
6089 if (Lex.getKind() == lltok::kw_volatile) {
6094 if (ParseTypeAndValue(Val, Loc, PFS) ||
6095 ParseToken(lltok::comma, "expected ',' after store operand") ||
6096 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
6097 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
6098 ParseOptionalCommaAlign(Alignment, AteExtraComma))
6101 if (!Ptr->getType()->isPointerTy())
6102 return Error(PtrLoc, "store operand must be a pointer");
6103 if (!Val->getType()->isFirstClassType())
6104 return Error(Loc, "store operand must be a first class value");
6105 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
6106 return Error(Loc, "stored value and pointer type do not match");
6107 if (isAtomic && !Alignment)
6108 return Error(Loc, "atomic store must have explicit non-zero alignment");
6109 if (Ordering == AtomicOrdering::Acquire ||
6110 Ordering == AtomicOrdering::AcquireRelease)
6111 return Error(Loc, "atomic store cannot use Acquire ordering");
6113 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, Scope);
6114 return AteExtraComma ? InstExtraComma : InstNormal;
6118 /// ::= 'cmpxchg' 'weak'? 'volatile'? TypeAndValue ',' TypeAndValue ','
6119 /// TypeAndValue 'singlethread'? AtomicOrdering AtomicOrdering
6120 int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
6121 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
6122 bool AteExtraComma = false;
6123 AtomicOrdering SuccessOrdering = AtomicOrdering::NotAtomic;
6124 AtomicOrdering FailureOrdering = AtomicOrdering::NotAtomic;
6125 SynchronizationScope Scope = CrossThread;
6126 bool isVolatile = false;
6127 bool isWeak = false;
6129 if (EatIfPresent(lltok::kw_weak))
6132 if (EatIfPresent(lltok::kw_volatile))
6135 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
6136 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
6137 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
6138 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
6139 ParseTypeAndValue(New, NewLoc, PFS) ||
6140 ParseScopeAndOrdering(true /*Always atomic*/, Scope, SuccessOrdering) ||
6141 ParseOrdering(FailureOrdering))
6144 if (SuccessOrdering == AtomicOrdering::Unordered ||
6145 FailureOrdering == AtomicOrdering::Unordered)
6146 return TokError("cmpxchg cannot be unordered");
6147 if (isStrongerThan(FailureOrdering, SuccessOrdering))
6148 return TokError("cmpxchg failure argument shall be no stronger than the "
6149 "success argument");
6150 if (FailureOrdering == AtomicOrdering::Release ||
6151 FailureOrdering == AtomicOrdering::AcquireRelease)
6153 "cmpxchg failure ordering cannot include release semantics");
6154 if (!Ptr->getType()->isPointerTy())
6155 return Error(PtrLoc, "cmpxchg operand must be a pointer");
6156 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
6157 return Error(CmpLoc, "compare value and pointer type do not match");
6158 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
6159 return Error(NewLoc, "new value and pointer type do not match");
6160 if (!New->getType()->isFirstClassType())
6161 return Error(NewLoc, "cmpxchg operand must be a first class value");
6162 AtomicCmpXchgInst *CXI = new AtomicCmpXchgInst(
6163 Ptr, Cmp, New, SuccessOrdering, FailureOrdering, Scope);
6164 CXI->setVolatile(isVolatile);
6165 CXI->setWeak(isWeak);
6167 return AteExtraComma ? InstExtraComma : InstNormal;
6171 /// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
6172 /// 'singlethread'? AtomicOrdering
6173 int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
6174 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
6175 bool AteExtraComma = false;
6176 AtomicOrdering Ordering = AtomicOrdering::NotAtomic;
6177 SynchronizationScope Scope = CrossThread;
6178 bool isVolatile = false;
6179 AtomicRMWInst::BinOp Operation;
6181 if (EatIfPresent(lltok::kw_volatile))
6184 switch (Lex.getKind()) {
6185 default: return TokError("expected binary operation in atomicrmw");
6186 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
6187 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
6188 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
6189 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
6190 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
6191 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
6192 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
6193 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
6194 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
6195 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
6196 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
6198 Lex.Lex(); // Eat the operation.
6200 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
6201 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
6202 ParseTypeAndValue(Val, ValLoc, PFS) ||
6203 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
6206 if (Ordering == AtomicOrdering::Unordered)
6207 return TokError("atomicrmw cannot be unordered");
6208 if (!Ptr->getType()->isPointerTy())
6209 return Error(PtrLoc, "atomicrmw operand must be a pointer");
6210 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
6211 return Error(ValLoc, "atomicrmw value and pointer type do not match");
6212 if (!Val->getType()->isIntegerTy())
6213 return Error(ValLoc, "atomicrmw operand must be an integer");
6214 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
6215 if (Size < 8 || (Size & (Size - 1)))
6216 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
6219 AtomicRMWInst *RMWI =
6220 new AtomicRMWInst(Operation, Ptr, Val, Ordering, Scope);
6221 RMWI->setVolatile(isVolatile);
6223 return AteExtraComma ? InstExtraComma : InstNormal;
6227 /// ::= 'fence' 'singlethread'? AtomicOrdering
6228 int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
6229 AtomicOrdering Ordering = AtomicOrdering::NotAtomic;
6230 SynchronizationScope Scope = CrossThread;
6231 if (ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
6234 if (Ordering == AtomicOrdering::Unordered)
6235 return TokError("fence cannot be unordered");
6236 if (Ordering == AtomicOrdering::Monotonic)
6237 return TokError("fence cannot be monotonic");
6239 Inst = new FenceInst(Context, Ordering, Scope);
6243 /// ParseGetElementPtr
6244 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
6245 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
6246 Value *Ptr = nullptr;
6247 Value *Val = nullptr;
6250 bool InBounds = EatIfPresent(lltok::kw_inbounds);
6253 LocTy ExplicitTypeLoc = Lex.getLoc();
6254 if (ParseType(Ty) ||
6255 ParseToken(lltok::comma, "expected comma after getelementptr's type") ||
6256 ParseTypeAndValue(Ptr, Loc, PFS))
6259 Type *BaseType = Ptr->getType();
6260 PointerType *BasePointerType = dyn_cast<PointerType>(BaseType->getScalarType());
6261 if (!BasePointerType)
6262 return Error(Loc, "base of getelementptr must be a pointer");
6264 if (Ty != BasePointerType->getElementType())
6265 return Error(ExplicitTypeLoc,
6266 "explicit pointee type doesn't match operand's pointee type");
6268 SmallVector<Value*, 16> Indices;
6269 bool AteExtraComma = false;
6270 // GEP returns a vector of pointers if at least one of parameters is a vector.
6271 // All vector parameters should have the same vector width.
6272 unsigned GEPWidth = BaseType->isVectorTy() ?
6273 BaseType->getVectorNumElements() : 0;
6275 while (EatIfPresent(lltok::comma)) {
6276 if (Lex.getKind() == lltok::MetadataVar) {
6277 AteExtraComma = true;
6280 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
6281 if (!Val->getType()->getScalarType()->isIntegerTy())
6282 return Error(EltLoc, "getelementptr index must be an integer");
6284 if (Val->getType()->isVectorTy()) {
6285 unsigned ValNumEl = Val->getType()->getVectorNumElements();
6286 if (GEPWidth && GEPWidth != ValNumEl)
6287 return Error(EltLoc,
6288 "getelementptr vector index has a wrong number of elements");
6289 GEPWidth = ValNumEl;
6291 Indices.push_back(Val);
6294 SmallPtrSet<Type*, 4> Visited;
6295 if (!Indices.empty() && !Ty->isSized(&Visited))
6296 return Error(Loc, "base element of getelementptr must be sized");
6298 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
6299 return Error(Loc, "invalid getelementptr indices");
6300 Inst = GetElementPtrInst::Create(Ty, Ptr, Indices);
6302 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
6303 return AteExtraComma ? InstExtraComma : InstNormal;
6306 /// ParseExtractValue
6307 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
6308 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
6309 Value *Val; LocTy Loc;
6310 SmallVector<unsigned, 4> Indices;
6312 if (ParseTypeAndValue(Val, Loc, PFS) ||
6313 ParseIndexList(Indices, AteExtraComma))
6316 if (!Val->getType()->isAggregateType())
6317 return Error(Loc, "extractvalue operand must be aggregate type");
6319 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
6320 return Error(Loc, "invalid indices for extractvalue");
6321 Inst = ExtractValueInst::Create(Val, Indices);
6322 return AteExtraComma ? InstExtraComma : InstNormal;
6325 /// ParseInsertValue
6326 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
6327 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
6328 Value *Val0, *Val1; LocTy Loc0, Loc1;
6329 SmallVector<unsigned, 4> Indices;
6331 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
6332 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
6333 ParseTypeAndValue(Val1, Loc1, PFS) ||
6334 ParseIndexList(Indices, AteExtraComma))
6337 if (!Val0->getType()->isAggregateType())
6338 return Error(Loc0, "insertvalue operand must be aggregate type");
6340 Type *IndexedType = ExtractValueInst::getIndexedType(Val0->getType(), Indices);
6342 return Error(Loc0, "invalid indices for insertvalue");
6343 if (IndexedType != Val1->getType())
6344 return Error(Loc1, "insertvalue operand and field disagree in type: '" +
6345 getTypeString(Val1->getType()) + "' instead of '" +
6346 getTypeString(IndexedType) + "'");
6347 Inst = InsertValueInst::Create(Val0, Val1, Indices);
6348 return AteExtraComma ? InstExtraComma : InstNormal;
6351 //===----------------------------------------------------------------------===//
6352 // Embedded metadata.
6353 //===----------------------------------------------------------------------===//
6355 /// ParseMDNodeVector
6356 /// ::= { Element (',' Element)* }
6358 /// ::= 'null' | TypeAndValue
6359 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Metadata *> &Elts) {
6360 if (ParseToken(lltok::lbrace, "expected '{' here"))
6363 // Check for an empty list.
6364 if (EatIfPresent(lltok::rbrace))
6368 // Null is a special case since it is typeless.
6369 if (EatIfPresent(lltok::kw_null)) {
6370 Elts.push_back(nullptr);
6375 if (ParseMetadata(MD, nullptr))
6378 } while (EatIfPresent(lltok::comma));
6380 return ParseToken(lltok::rbrace, "expected end of metadata node");
6383 //===----------------------------------------------------------------------===//
6384 // Use-list order directives.
6385 //===----------------------------------------------------------------------===//
6386 bool LLParser::sortUseListOrder(Value *V, ArrayRef<unsigned> Indexes,
6389 return Error(Loc, "value has no uses");
6391 unsigned NumUses = 0;
6392 SmallDenseMap<const Use *, unsigned, 16> Order;
6393 for (const Use &U : V->uses()) {
6394 if (++NumUses > Indexes.size())
6396 Order[&U] = Indexes[NumUses - 1];
6399 return Error(Loc, "value only has one use");
6400 if (Order.size() != Indexes.size() || NumUses > Indexes.size())
6401 return Error(Loc, "wrong number of indexes, expected " +
6402 Twine(std::distance(V->use_begin(), V->use_end())));
6404 V->sortUseList([&](const Use &L, const Use &R) {
6405 return Order.lookup(&L) < Order.lookup(&R);
6410 /// ParseUseListOrderIndexes
6411 /// ::= '{' uint32 (',' uint32)+ '}'
6412 bool LLParser::ParseUseListOrderIndexes(SmallVectorImpl<unsigned> &Indexes) {
6413 SMLoc Loc = Lex.getLoc();
6414 if (ParseToken(lltok::lbrace, "expected '{' here"))
6416 if (Lex.getKind() == lltok::rbrace)
6417 return Lex.Error("expected non-empty list of uselistorder indexes");
6419 // Use Offset, Max, and IsOrdered to check consistency of indexes. The
6420 // indexes should be distinct numbers in the range [0, size-1], and should
6422 unsigned Offset = 0;
6424 bool IsOrdered = true;
6425 assert(Indexes.empty() && "Expected empty order vector");
6428 if (ParseUInt32(Index))
6431 // Update consistency checks.
6432 Offset += Index - Indexes.size();
6433 Max = std::max(Max, Index);
6434 IsOrdered &= Index == Indexes.size();
6436 Indexes.push_back(Index);
6437 } while (EatIfPresent(lltok::comma));
6439 if (ParseToken(lltok::rbrace, "expected '}' here"))
6442 if (Indexes.size() < 2)
6443 return Error(Loc, "expected >= 2 uselistorder indexes");
6444 if (Offset != 0 || Max >= Indexes.size())
6445 return Error(Loc, "expected distinct uselistorder indexes in range [0, size)");
6447 return Error(Loc, "expected uselistorder indexes to change the order");
6452 /// ParseUseListOrder
6453 /// ::= 'uselistorder' Type Value ',' UseListOrderIndexes
6454 bool LLParser::ParseUseListOrder(PerFunctionState *PFS) {
6455 SMLoc Loc = Lex.getLoc();
6456 if (ParseToken(lltok::kw_uselistorder, "expected uselistorder directive"))
6460 SmallVector<unsigned, 16> Indexes;
6461 if (ParseTypeAndValue(V, PFS) ||
6462 ParseToken(lltok::comma, "expected comma in uselistorder directive") ||
6463 ParseUseListOrderIndexes(Indexes))
6466 return sortUseListOrder(V, Indexes, Loc);
6469 /// ParseUseListOrderBB
6470 /// ::= 'uselistorder_bb' @foo ',' %bar ',' UseListOrderIndexes
6471 bool LLParser::ParseUseListOrderBB() {
6472 assert(Lex.getKind() == lltok::kw_uselistorder_bb);
6473 SMLoc Loc = Lex.getLoc();
6477 SmallVector<unsigned, 16> Indexes;
6478 if (ParseValID(Fn) ||
6479 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
6480 ParseValID(Label) ||
6481 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
6482 ParseUseListOrderIndexes(Indexes))
6485 // Check the function.
6487 if (Fn.Kind == ValID::t_GlobalName)
6488 GV = M->getNamedValue(Fn.StrVal);
6489 else if (Fn.Kind == ValID::t_GlobalID)
6490 GV = Fn.UIntVal < NumberedVals.size() ? NumberedVals[Fn.UIntVal] : nullptr;
6492 return Error(Fn.Loc, "expected function name in uselistorder_bb");
6494 return Error(Fn.Loc, "invalid function forward reference in uselistorder_bb");
6495 auto *F = dyn_cast<Function>(GV);
6497 return Error(Fn.Loc, "expected function name in uselistorder_bb");
6498 if (F->isDeclaration())
6499 return Error(Fn.Loc, "invalid declaration in uselistorder_bb");
6501 // Check the basic block.
6502 if (Label.Kind == ValID::t_LocalID)
6503 return Error(Label.Loc, "invalid numeric label in uselistorder_bb");
6504 if (Label.Kind != ValID::t_LocalName)
6505 return Error(Label.Loc, "expected basic block name in uselistorder_bb");
6506 Value *V = F->getValueSymbolTable()->lookup(Label.StrVal);
6508 return Error(Label.Loc, "invalid basic block in uselistorder_bb");
6509 if (!isa<BasicBlock>(V))
6510 return Error(Label.Loc, "expected basic block in uselistorder_bb");
6512 return sortUseListOrder(V, Indexes, Loc);