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/SmallPtrSet.h"
16 #include "llvm/IR/AutoUpgrade.h"
17 #include "llvm/IR/CallingConv.h"
18 #include "llvm/IR/Constants.h"
19 #include "llvm/IR/DebugInfo.h"
20 #include "llvm/IR/DebugInfoMetadata.h"
21 #include "llvm/IR/DerivedTypes.h"
22 #include "llvm/IR/InlineAsm.h"
23 #include "llvm/IR/Instructions.h"
24 #include "llvm/IR/LLVMContext.h"
25 #include "llvm/IR/Module.h"
26 #include "llvm/IR/Operator.h"
27 #include "llvm/IR/ValueSymbolTable.h"
28 #include "llvm/Support/Dwarf.h"
29 #include "llvm/Support/ErrorHandling.h"
30 #include "llvm/Support/SaveAndRestore.h"
31 #include "llvm/Support/raw_ostream.h"
34 static std::string getTypeString(Type *T) {
36 raw_string_ostream Tmp(Result);
41 /// Run: module ::= toplevelentity*
42 bool LLParser::Run() {
46 return ParseTopLevelEntities() ||
47 ValidateEndOfModule();
50 /// ValidateEndOfModule - Do final validity and sanity checks at the end of the
52 bool LLParser::ValidateEndOfModule() {
53 for (unsigned I = 0, E = InstsWithTBAATag.size(); I < E; I++)
54 UpgradeInstWithTBAATag(InstsWithTBAATag[I]);
56 // Handle any function attribute group forward references.
57 for (std::map<Value*, std::vector<unsigned> >::iterator
58 I = ForwardRefAttrGroups.begin(), E = ForwardRefAttrGroups.end();
61 std::vector<unsigned> &Vec = I->second;
64 for (std::vector<unsigned>::iterator VI = Vec.begin(), VE = Vec.end();
66 B.merge(NumberedAttrBuilders[*VI]);
68 if (Function *Fn = dyn_cast<Function>(V)) {
69 AttributeSet AS = Fn->getAttributes();
70 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
71 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
72 AS.getFnAttributes());
76 // If the alignment was parsed as an attribute, move to the alignment
78 if (FnAttrs.hasAlignmentAttr()) {
79 Fn->setAlignment(FnAttrs.getAlignment());
80 FnAttrs.removeAttribute(Attribute::Alignment);
83 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
84 AttributeSet::get(Context,
85 AttributeSet::FunctionIndex,
87 Fn->setAttributes(AS);
88 } else if (CallInst *CI = dyn_cast<CallInst>(V)) {
89 AttributeSet AS = CI->getAttributes();
90 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
91 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
92 AS.getFnAttributes());
94 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
95 AttributeSet::get(Context,
96 AttributeSet::FunctionIndex,
98 CI->setAttributes(AS);
99 } else if (InvokeInst *II = dyn_cast<InvokeInst>(V)) {
100 AttributeSet AS = II->getAttributes();
101 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
102 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
103 AS.getFnAttributes());
105 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
106 AttributeSet::get(Context,
107 AttributeSet::FunctionIndex,
109 II->setAttributes(AS);
111 llvm_unreachable("invalid object with forward attribute group reference");
115 // If there are entries in ForwardRefBlockAddresses at this point, the
116 // function was never defined.
117 if (!ForwardRefBlockAddresses.empty())
118 return Error(ForwardRefBlockAddresses.begin()->first.Loc,
119 "expected function name in blockaddress");
121 for (const auto &NT : NumberedTypes)
122 if (NT.second.second.isValid())
123 return Error(NT.second.second,
124 "use of undefined type '%" + Twine(NT.first) + "'");
126 for (StringMap<std::pair<Type*, LocTy> >::iterator I =
127 NamedTypes.begin(), E = NamedTypes.end(); I != E; ++I)
128 if (I->second.second.isValid())
129 return Error(I->second.second,
130 "use of undefined type named '" + I->getKey() + "'");
132 if (!ForwardRefComdats.empty())
133 return Error(ForwardRefComdats.begin()->second,
134 "use of undefined comdat '$" +
135 ForwardRefComdats.begin()->first + "'");
137 if (!ForwardRefVals.empty())
138 return Error(ForwardRefVals.begin()->second.second,
139 "use of undefined value '@" + ForwardRefVals.begin()->first +
142 if (!ForwardRefValIDs.empty())
143 return Error(ForwardRefValIDs.begin()->second.second,
144 "use of undefined value '@" +
145 Twine(ForwardRefValIDs.begin()->first) + "'");
147 if (!ForwardRefMDNodes.empty())
148 return Error(ForwardRefMDNodes.begin()->second.second,
149 "use of undefined metadata '!" +
150 Twine(ForwardRefMDNodes.begin()->first) + "'");
152 // Resolve metadata cycles.
153 for (auto &N : NumberedMetadata) {
154 if (N.second && !N.second->isResolved())
155 N.second->resolveCycles();
158 // Look for intrinsic functions and CallInst that need to be upgraded
159 for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; )
160 UpgradeCallsToIntrinsic(FI++); // must be post-increment, as we remove
162 UpgradeDebugInfo(*M);
167 //===----------------------------------------------------------------------===//
168 // Top-Level Entities
169 //===----------------------------------------------------------------------===//
171 bool LLParser::ParseTopLevelEntities() {
173 switch (Lex.getKind()) {
174 default: return TokError("expected top-level entity");
175 case lltok::Eof: return false;
176 case lltok::kw_declare: if (ParseDeclare()) return true; break;
177 case lltok::kw_define: if (ParseDefine()) return true; break;
178 case lltok::kw_module: if (ParseModuleAsm()) return true; break;
179 case lltok::kw_target: if (ParseTargetDefinition()) return true; break;
180 case lltok::kw_deplibs: if (ParseDepLibs()) return true; break;
181 case lltok::LocalVarID: if (ParseUnnamedType()) return true; break;
182 case lltok::LocalVar: if (ParseNamedType()) return true; break;
183 case lltok::GlobalID: if (ParseUnnamedGlobal()) return true; break;
184 case lltok::GlobalVar: if (ParseNamedGlobal()) return true; break;
185 case lltok::ComdatVar: if (parseComdat()) return true; break;
186 case lltok::exclaim: if (ParseStandaloneMetadata()) return true; break;
187 case lltok::MetadataVar:if (ParseNamedMetadata()) return true; break;
189 // The Global variable production with no name can have many different
190 // optional leading prefixes, the production is:
191 // GlobalVar ::= OptionalLinkage OptionalVisibility OptionalDLLStorageClass
192 // OptionalThreadLocal OptionalAddrSpace OptionalUnnamedAddr
193 // ('constant'|'global') ...
194 case lltok::kw_private: // OptionalLinkage
195 case lltok::kw_internal: // OptionalLinkage
196 case lltok::kw_weak: // OptionalLinkage
197 case lltok::kw_weak_odr: // OptionalLinkage
198 case lltok::kw_linkonce: // OptionalLinkage
199 case lltok::kw_linkonce_odr: // OptionalLinkage
200 case lltok::kw_appending: // OptionalLinkage
201 case lltok::kw_common: // OptionalLinkage
202 case lltok::kw_extern_weak: // OptionalLinkage
203 case lltok::kw_external: // OptionalLinkage
204 case lltok::kw_default: // OptionalVisibility
205 case lltok::kw_hidden: // OptionalVisibility
206 case lltok::kw_protected: // OptionalVisibility
207 case lltok::kw_dllimport: // OptionalDLLStorageClass
208 case lltok::kw_dllexport: // OptionalDLLStorageClass
209 case lltok::kw_thread_local: // OptionalThreadLocal
210 case lltok::kw_addrspace: // OptionalAddrSpace
211 case lltok::kw_constant: // GlobalType
212 case lltok::kw_global: { // GlobalType
213 unsigned Linkage, Visibility, DLLStorageClass;
215 GlobalVariable::ThreadLocalMode TLM;
217 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
218 ParseOptionalVisibility(Visibility) ||
219 ParseOptionalDLLStorageClass(DLLStorageClass) ||
220 ParseOptionalThreadLocal(TLM) ||
221 parseOptionalUnnamedAddr(UnnamedAddr) ||
222 ParseGlobal("", SMLoc(), Linkage, HasLinkage, Visibility,
223 DLLStorageClass, TLM, UnnamedAddr))
228 case lltok::kw_attributes: if (ParseUnnamedAttrGrp()) return true; break;
229 case lltok::kw_uselistorder: if (ParseUseListOrder()) return true; break;
230 case lltok::kw_uselistorder_bb:
231 if (ParseUseListOrderBB()) return true; break;
238 /// ::= 'module' 'asm' STRINGCONSTANT
239 bool LLParser::ParseModuleAsm() {
240 assert(Lex.getKind() == lltok::kw_module);
244 if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
245 ParseStringConstant(AsmStr)) return true;
247 M->appendModuleInlineAsm(AsmStr);
252 /// ::= 'target' 'triple' '=' STRINGCONSTANT
253 /// ::= 'target' 'datalayout' '=' STRINGCONSTANT
254 bool LLParser::ParseTargetDefinition() {
255 assert(Lex.getKind() == lltok::kw_target);
258 default: return TokError("unknown target property");
259 case lltok::kw_triple:
261 if (ParseToken(lltok::equal, "expected '=' after target triple") ||
262 ParseStringConstant(Str))
264 M->setTargetTriple(Str);
266 case lltok::kw_datalayout:
268 if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
269 ParseStringConstant(Str))
271 M->setDataLayout(Str);
277 /// ::= 'deplibs' '=' '[' ']'
278 /// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
279 /// FIXME: Remove in 4.0. Currently parse, but ignore.
280 bool LLParser::ParseDepLibs() {
281 assert(Lex.getKind() == lltok::kw_deplibs);
283 if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
284 ParseToken(lltok::lsquare, "expected '=' after deplibs"))
287 if (EatIfPresent(lltok::rsquare))
292 if (ParseStringConstant(Str)) return true;
293 } while (EatIfPresent(lltok::comma));
295 return ParseToken(lltok::rsquare, "expected ']' at end of list");
298 /// ParseUnnamedType:
299 /// ::= LocalVarID '=' 'type' type
300 bool LLParser::ParseUnnamedType() {
301 LocTy TypeLoc = Lex.getLoc();
302 unsigned TypeID = Lex.getUIntVal();
303 Lex.Lex(); // eat LocalVarID;
305 if (ParseToken(lltok::equal, "expected '=' after name") ||
306 ParseToken(lltok::kw_type, "expected 'type' after '='"))
309 Type *Result = nullptr;
310 if (ParseStructDefinition(TypeLoc, "",
311 NumberedTypes[TypeID], Result)) return true;
313 if (!isa<StructType>(Result)) {
314 std::pair<Type*, LocTy> &Entry = NumberedTypes[TypeID];
316 return Error(TypeLoc, "non-struct types may not be recursive");
317 Entry.first = Result;
318 Entry.second = SMLoc();
326 /// ::= LocalVar '=' 'type' type
327 bool LLParser::ParseNamedType() {
328 std::string Name = Lex.getStrVal();
329 LocTy NameLoc = Lex.getLoc();
330 Lex.Lex(); // eat LocalVar.
332 if (ParseToken(lltok::equal, "expected '=' after name") ||
333 ParseToken(lltok::kw_type, "expected 'type' after name"))
336 Type *Result = nullptr;
337 if (ParseStructDefinition(NameLoc, Name,
338 NamedTypes[Name], Result)) return true;
340 if (!isa<StructType>(Result)) {
341 std::pair<Type*, LocTy> &Entry = NamedTypes[Name];
343 return Error(NameLoc, "non-struct types may not be recursive");
344 Entry.first = Result;
345 Entry.second = SMLoc();
353 /// ::= 'declare' FunctionHeader
354 bool LLParser::ParseDeclare() {
355 assert(Lex.getKind() == lltok::kw_declare);
359 return ParseFunctionHeader(F, false);
363 /// ::= 'define' FunctionHeader (!dbg !56)* '{' ...
364 bool LLParser::ParseDefine() {
365 assert(Lex.getKind() == lltok::kw_define);
369 return ParseFunctionHeader(F, true) ||
370 ParseOptionalFunctionMetadata(*F) ||
371 ParseFunctionBody(*F);
377 bool LLParser::ParseGlobalType(bool &IsConstant) {
378 if (Lex.getKind() == lltok::kw_constant)
380 else if (Lex.getKind() == lltok::kw_global)
384 return TokError("expected 'global' or 'constant'");
390 /// ParseUnnamedGlobal:
391 /// OptionalVisibility ALIAS ...
392 /// OptionalLinkage OptionalVisibility OptionalDLLStorageClass
393 /// ... -> global variable
394 /// GlobalID '=' OptionalVisibility ALIAS ...
395 /// GlobalID '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
396 /// ... -> global variable
397 bool LLParser::ParseUnnamedGlobal() {
398 unsigned VarID = NumberedVals.size();
400 LocTy NameLoc = Lex.getLoc();
402 // Handle the GlobalID form.
403 if (Lex.getKind() == lltok::GlobalID) {
404 if (Lex.getUIntVal() != VarID)
405 return Error(Lex.getLoc(), "variable expected to be numbered '%" +
407 Lex.Lex(); // eat GlobalID;
409 if (ParseToken(lltok::equal, "expected '=' after name"))
414 unsigned Linkage, Visibility, DLLStorageClass;
415 GlobalVariable::ThreadLocalMode TLM;
417 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
418 ParseOptionalVisibility(Visibility) ||
419 ParseOptionalDLLStorageClass(DLLStorageClass) ||
420 ParseOptionalThreadLocal(TLM) ||
421 parseOptionalUnnamedAddr(UnnamedAddr))
424 if (Lex.getKind() != lltok::kw_alias)
425 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility,
426 DLLStorageClass, TLM, UnnamedAddr);
427 return ParseAlias(Name, NameLoc, Linkage, Visibility, DLLStorageClass, TLM,
431 /// ParseNamedGlobal:
432 /// GlobalVar '=' OptionalVisibility ALIAS ...
433 /// GlobalVar '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
434 /// ... -> global variable
435 bool LLParser::ParseNamedGlobal() {
436 assert(Lex.getKind() == lltok::GlobalVar);
437 LocTy NameLoc = Lex.getLoc();
438 std::string Name = Lex.getStrVal();
442 unsigned Linkage, Visibility, DLLStorageClass;
443 GlobalVariable::ThreadLocalMode TLM;
445 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
446 ParseOptionalLinkage(Linkage, HasLinkage) ||
447 ParseOptionalVisibility(Visibility) ||
448 ParseOptionalDLLStorageClass(DLLStorageClass) ||
449 ParseOptionalThreadLocal(TLM) ||
450 parseOptionalUnnamedAddr(UnnamedAddr))
453 if (Lex.getKind() != lltok::kw_alias)
454 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility,
455 DLLStorageClass, TLM, UnnamedAddr);
457 return ParseAlias(Name, NameLoc, Linkage, Visibility, DLLStorageClass, TLM,
461 bool LLParser::parseComdat() {
462 assert(Lex.getKind() == lltok::ComdatVar);
463 std::string Name = Lex.getStrVal();
464 LocTy NameLoc = Lex.getLoc();
467 if (ParseToken(lltok::equal, "expected '=' here"))
470 if (ParseToken(lltok::kw_comdat, "expected comdat keyword"))
471 return TokError("expected comdat type");
473 Comdat::SelectionKind SK;
474 switch (Lex.getKind()) {
476 return TokError("unknown selection kind");
480 case lltok::kw_exactmatch:
481 SK = Comdat::ExactMatch;
483 case lltok::kw_largest:
484 SK = Comdat::Largest;
486 case lltok::kw_noduplicates:
487 SK = Comdat::NoDuplicates;
489 case lltok::kw_samesize:
490 SK = Comdat::SameSize;
495 // See if the comdat was forward referenced, if so, use the comdat.
496 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
497 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
498 if (I != ComdatSymTab.end() && !ForwardRefComdats.erase(Name))
499 return Error(NameLoc, "redefinition of comdat '$" + Name + "'");
502 if (I != ComdatSymTab.end())
505 C = M->getOrInsertComdat(Name);
506 C->setSelectionKind(SK);
512 // ::= '!' STRINGCONSTANT
513 bool LLParser::ParseMDString(MDString *&Result) {
515 if (ParseStringConstant(Str)) return true;
516 llvm::UpgradeMDStringConstant(Str);
517 Result = MDString::get(Context, Str);
522 // ::= '!' MDNodeNumber
523 bool LLParser::ParseMDNodeID(MDNode *&Result) {
524 // !{ ..., !42, ... }
526 if (ParseUInt32(MID))
529 // If not a forward reference, just return it now.
530 if (NumberedMetadata.count(MID)) {
531 Result = NumberedMetadata[MID];
535 // Otherwise, create MDNode forward reference.
536 auto &FwdRef = ForwardRefMDNodes[MID];
537 FwdRef = std::make_pair(MDTuple::getTemporary(Context, None), Lex.getLoc());
539 Result = FwdRef.first.get();
540 NumberedMetadata[MID].reset(Result);
544 /// ParseNamedMetadata:
545 /// !foo = !{ !1, !2 }
546 bool LLParser::ParseNamedMetadata() {
547 assert(Lex.getKind() == lltok::MetadataVar);
548 std::string Name = Lex.getStrVal();
551 if (ParseToken(lltok::equal, "expected '=' here") ||
552 ParseToken(lltok::exclaim, "Expected '!' here") ||
553 ParseToken(lltok::lbrace, "Expected '{' here"))
556 NamedMDNode *NMD = M->getOrInsertNamedMetadata(Name);
557 if (Lex.getKind() != lltok::rbrace)
559 if (ParseToken(lltok::exclaim, "Expected '!' here"))
563 if (ParseMDNodeID(N)) return true;
565 } while (EatIfPresent(lltok::comma));
567 return ParseToken(lltok::rbrace, "expected end of metadata node");
570 /// ParseStandaloneMetadata:
572 bool LLParser::ParseStandaloneMetadata() {
573 assert(Lex.getKind() == lltok::exclaim);
575 unsigned MetadataID = 0;
578 if (ParseUInt32(MetadataID) ||
579 ParseToken(lltok::equal, "expected '=' here"))
582 // Detect common error, from old metadata syntax.
583 if (Lex.getKind() == lltok::Type)
584 return TokError("unexpected type in metadata definition");
586 bool IsDistinct = EatIfPresent(lltok::kw_distinct);
587 if (Lex.getKind() == lltok::MetadataVar) {
588 if (ParseSpecializedMDNode(Init, IsDistinct))
590 } else if (ParseToken(lltok::exclaim, "Expected '!' here") ||
591 ParseMDTuple(Init, IsDistinct))
594 // See if this was forward referenced, if so, handle it.
595 auto FI = ForwardRefMDNodes.find(MetadataID);
596 if (FI != ForwardRefMDNodes.end()) {
597 FI->second.first->replaceAllUsesWith(Init);
598 ForwardRefMDNodes.erase(FI);
600 assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work");
602 if (NumberedMetadata.count(MetadataID))
603 return TokError("Metadata id is already used");
604 NumberedMetadata[MetadataID].reset(Init);
610 static bool isValidVisibilityForLinkage(unsigned V, unsigned L) {
611 return !GlobalValue::isLocalLinkage((GlobalValue::LinkageTypes)L) ||
612 (GlobalValue::VisibilityTypes)V == GlobalValue::DefaultVisibility;
616 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility
617 /// OptionalDLLStorageClass OptionalThreadLocal
618 /// OptionalUnnamedAddr 'alias' Aliasee
623 /// Everything through OptionalUnnamedAddr has already been parsed.
625 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc, unsigned L,
626 unsigned Visibility, unsigned DLLStorageClass,
627 GlobalVariable::ThreadLocalMode TLM,
629 assert(Lex.getKind() == lltok::kw_alias);
632 GlobalValue::LinkageTypes Linkage = (GlobalValue::LinkageTypes) L;
634 if(!GlobalAlias::isValidLinkage(Linkage))
635 return Error(NameLoc, "invalid linkage type for alias");
637 if (!isValidVisibilityForLinkage(Visibility, L))
638 return Error(NameLoc,
639 "symbol with local linkage must have default visibility");
642 LocTy AliaseeLoc = Lex.getLoc();
643 if (Lex.getKind() != lltok::kw_bitcast &&
644 Lex.getKind() != lltok::kw_getelementptr &&
645 Lex.getKind() != lltok::kw_addrspacecast &&
646 Lex.getKind() != lltok::kw_inttoptr) {
647 if (ParseGlobalTypeAndValue(Aliasee))
650 // The bitcast dest type is not present, it is implied by the dest type.
654 if (ID.Kind != ValID::t_Constant)
655 return Error(AliaseeLoc, "invalid aliasee");
656 Aliasee = ID.ConstantVal;
659 Type *AliaseeType = Aliasee->getType();
660 auto *PTy = dyn_cast<PointerType>(AliaseeType);
662 return Error(AliaseeLoc, "An alias must have pointer type");
664 // Okay, create the alias but do not insert it into the module yet.
665 std::unique_ptr<GlobalAlias> GA(
666 GlobalAlias::create(PTy, (GlobalValue::LinkageTypes)Linkage, Name,
667 Aliasee, /*Parent*/ nullptr));
668 GA->setThreadLocalMode(TLM);
669 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
670 GA->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
671 GA->setUnnamedAddr(UnnamedAddr);
674 NumberedVals.push_back(GA.get());
676 // See if this value already exists in the symbol table. If so, it is either
677 // a redefinition or a definition of a forward reference.
678 if (GlobalValue *Val = M->getNamedValue(Name)) {
679 // See if this was a redefinition. If so, there is no entry in
681 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
682 I = ForwardRefVals.find(Name);
683 if (I == ForwardRefVals.end())
684 return Error(NameLoc, "redefinition of global named '@" + Name + "'");
686 // Otherwise, this was a definition of forward ref. Verify that types
688 if (Val->getType() != GA->getType())
689 return Error(NameLoc,
690 "forward reference and definition of alias have different types");
692 // If they agree, just RAUW the old value with the alias and remove the
694 Val->replaceAllUsesWith(GA.get());
695 Val->eraseFromParent();
696 ForwardRefVals.erase(I);
699 // Insert into the module, we know its name won't collide now.
700 M->getAliasList().push_back(GA.get());
701 assert(GA->getName() == Name && "Should not be a name conflict!");
703 // The module owns this now
710 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
711 /// OptionalThreadLocal OptionalUnnamedAddr OptionalAddrSpace
712 /// OptionalExternallyInitialized GlobalType Type Const
713 /// ::= OptionalLinkage OptionalVisibility OptionalDLLStorageClass
714 /// OptionalThreadLocal OptionalUnnamedAddr OptionalAddrSpace
715 /// OptionalExternallyInitialized GlobalType Type Const
717 /// Everything up to and including OptionalUnnamedAddr has been parsed
720 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
721 unsigned Linkage, bool HasLinkage,
722 unsigned Visibility, unsigned DLLStorageClass,
723 GlobalVariable::ThreadLocalMode TLM,
725 if (!isValidVisibilityForLinkage(Visibility, Linkage))
726 return Error(NameLoc,
727 "symbol with local linkage must have default visibility");
730 bool IsConstant, IsExternallyInitialized;
731 LocTy IsExternallyInitializedLoc;
735 if (ParseOptionalAddrSpace(AddrSpace) ||
736 ParseOptionalToken(lltok::kw_externally_initialized,
737 IsExternallyInitialized,
738 &IsExternallyInitializedLoc) ||
739 ParseGlobalType(IsConstant) ||
740 ParseType(Ty, TyLoc))
743 // If the linkage is specified and is external, then no initializer is
745 Constant *Init = nullptr;
746 if (!HasLinkage || (Linkage != GlobalValue::ExternalWeakLinkage &&
747 Linkage != GlobalValue::ExternalLinkage)) {
748 if (ParseGlobalValue(Ty, Init))
752 if (Ty->isFunctionTy() || !PointerType::isValidElementType(Ty))
753 return Error(TyLoc, "invalid type for global variable");
755 GlobalValue *GVal = nullptr;
757 // See if the global was forward referenced, if so, use the global.
759 GVal = M->getNamedValue(Name);
761 if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
762 return Error(NameLoc, "redefinition of global '@" + Name + "'");
765 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
766 I = ForwardRefValIDs.find(NumberedVals.size());
767 if (I != ForwardRefValIDs.end()) {
768 GVal = I->second.first;
769 ForwardRefValIDs.erase(I);
775 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, nullptr,
776 Name, nullptr, GlobalVariable::NotThreadLocal,
779 if (GVal->getValueType() != Ty)
781 "forward reference and definition of global have different types");
783 GV = cast<GlobalVariable>(GVal);
785 // Move the forward-reference to the correct spot in the module.
786 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
790 NumberedVals.push_back(GV);
792 // Set the parsed properties on the global.
794 GV->setInitializer(Init);
795 GV->setConstant(IsConstant);
796 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
797 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
798 GV->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
799 GV->setExternallyInitialized(IsExternallyInitialized);
800 GV->setThreadLocalMode(TLM);
801 GV->setUnnamedAddr(UnnamedAddr);
803 // Parse attributes on the global.
804 while (Lex.getKind() == lltok::comma) {
807 if (Lex.getKind() == lltok::kw_section) {
809 GV->setSection(Lex.getStrVal());
810 if (ParseToken(lltok::StringConstant, "expected global section string"))
812 } else if (Lex.getKind() == lltok::kw_align) {
814 if (ParseOptionalAlignment(Alignment)) return true;
815 GV->setAlignment(Alignment);
818 if (parseOptionalComdat(Name, C))
823 return TokError("unknown global variable property!");
830 /// ParseUnnamedAttrGrp
831 /// ::= 'attributes' AttrGrpID '=' '{' AttrValPair+ '}'
832 bool LLParser::ParseUnnamedAttrGrp() {
833 assert(Lex.getKind() == lltok::kw_attributes);
834 LocTy AttrGrpLoc = Lex.getLoc();
837 if (Lex.getKind() != lltok::AttrGrpID)
838 return TokError("expected attribute group id");
840 unsigned VarID = Lex.getUIntVal();
841 std::vector<unsigned> unused;
845 if (ParseToken(lltok::equal, "expected '=' here") ||
846 ParseToken(lltok::lbrace, "expected '{' here") ||
847 ParseFnAttributeValuePairs(NumberedAttrBuilders[VarID], unused, true,
849 ParseToken(lltok::rbrace, "expected end of attribute group"))
852 if (!NumberedAttrBuilders[VarID].hasAttributes())
853 return Error(AttrGrpLoc, "attribute group has no attributes");
858 /// ParseFnAttributeValuePairs
859 /// ::= <attr> | <attr> '=' <value>
860 bool LLParser::ParseFnAttributeValuePairs(AttrBuilder &B,
861 std::vector<unsigned> &FwdRefAttrGrps,
862 bool inAttrGrp, LocTy &BuiltinLoc) {
863 bool HaveError = false;
868 lltok::Kind Token = Lex.getKind();
869 if (Token == lltok::kw_builtin)
870 BuiltinLoc = Lex.getLoc();
873 if (!inAttrGrp) return HaveError;
874 return Error(Lex.getLoc(), "unterminated attribute group");
879 case lltok::AttrGrpID: {
880 // Allow a function to reference an attribute group:
882 // define void @foo() #1 { ... }
886 "cannot have an attribute group reference in an attribute group");
888 unsigned AttrGrpNum = Lex.getUIntVal();
889 if (inAttrGrp) break;
891 // Save the reference to the attribute group. We'll fill it in later.
892 FwdRefAttrGrps.push_back(AttrGrpNum);
895 // Target-dependent attributes:
896 case lltok::StringConstant: {
897 std::string Attr = Lex.getStrVal();
900 if (EatIfPresent(lltok::equal) &&
901 ParseStringConstant(Val))
904 B.addAttribute(Attr, Val);
908 // Target-independent attributes:
909 case lltok::kw_align: {
910 // As a hack, we allow function alignment to be initially parsed as an
911 // attribute on a function declaration/definition or added to an attribute
912 // group and later moved to the alignment field.
916 if (ParseToken(lltok::equal, "expected '=' here") ||
917 ParseUInt32(Alignment))
920 if (ParseOptionalAlignment(Alignment))
923 B.addAlignmentAttr(Alignment);
926 case lltok::kw_alignstack: {
930 if (ParseToken(lltok::equal, "expected '=' here") ||
931 ParseUInt32(Alignment))
934 if (ParseOptionalStackAlignment(Alignment))
937 B.addStackAlignmentAttr(Alignment);
940 case lltok::kw_alwaysinline: B.addAttribute(Attribute::AlwaysInline); break;
941 case lltok::kw_builtin: B.addAttribute(Attribute::Builtin); break;
942 case lltok::kw_cold: B.addAttribute(Attribute::Cold); break;
943 case lltok::kw_convergent: B.addAttribute(Attribute::Convergent); break;
944 case lltok::kw_inlinehint: B.addAttribute(Attribute::InlineHint); break;
945 case lltok::kw_jumptable: B.addAttribute(Attribute::JumpTable); break;
946 case lltok::kw_minsize: B.addAttribute(Attribute::MinSize); break;
947 case lltok::kw_naked: B.addAttribute(Attribute::Naked); break;
948 case lltok::kw_nobuiltin: B.addAttribute(Attribute::NoBuiltin); break;
949 case lltok::kw_noduplicate: B.addAttribute(Attribute::NoDuplicate); break;
950 case lltok::kw_noimplicitfloat: B.addAttribute(Attribute::NoImplicitFloat); break;
951 case lltok::kw_noinline: B.addAttribute(Attribute::NoInline); break;
952 case lltok::kw_nonlazybind: B.addAttribute(Attribute::NonLazyBind); break;
953 case lltok::kw_noredzone: B.addAttribute(Attribute::NoRedZone); break;
954 case lltok::kw_noreturn: B.addAttribute(Attribute::NoReturn); break;
955 case lltok::kw_nounwind: B.addAttribute(Attribute::NoUnwind); break;
956 case lltok::kw_optnone: B.addAttribute(Attribute::OptimizeNone); break;
957 case lltok::kw_optsize: B.addAttribute(Attribute::OptimizeForSize); break;
958 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
959 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
960 case lltok::kw_returns_twice: B.addAttribute(Attribute::ReturnsTwice); break;
961 case lltok::kw_ssp: B.addAttribute(Attribute::StackProtect); break;
962 case lltok::kw_sspreq: B.addAttribute(Attribute::StackProtectReq); break;
963 case lltok::kw_sspstrong: B.addAttribute(Attribute::StackProtectStrong); break;
964 case lltok::kw_safestack: B.addAttribute(Attribute::SafeStack); break;
965 case lltok::kw_sanitize_address: B.addAttribute(Attribute::SanitizeAddress); break;
966 case lltok::kw_sanitize_thread: B.addAttribute(Attribute::SanitizeThread); break;
967 case lltok::kw_sanitize_memory: B.addAttribute(Attribute::SanitizeMemory); break;
968 case lltok::kw_uwtable: B.addAttribute(Attribute::UWTable); break;
971 case lltok::kw_inreg:
972 case lltok::kw_signext:
973 case lltok::kw_zeroext:
976 "invalid use of attribute on a function");
978 case lltok::kw_byval:
979 case lltok::kw_dereferenceable:
980 case lltok::kw_dereferenceable_or_null:
981 case lltok::kw_inalloca:
983 case lltok::kw_noalias:
984 case lltok::kw_nocapture:
985 case lltok::kw_nonnull:
986 case lltok::kw_returned:
990 "invalid use of parameter-only attribute on a function");
998 //===----------------------------------------------------------------------===//
999 // GlobalValue Reference/Resolution Routines.
1000 //===----------------------------------------------------------------------===//
1002 /// GetGlobalVal - Get a value with the specified name or ID, creating a
1003 /// forward reference record if needed. This can return null if the value
1004 /// exists but does not have the right type.
1005 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
1007 PointerType *PTy = dyn_cast<PointerType>(Ty);
1009 Error(Loc, "global variable reference must have pointer type");
1013 // Look this name up in the normal function symbol table.
1015 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
1017 // If this is a forward reference for the value, see if we already created a
1018 // forward ref record.
1020 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
1021 I = ForwardRefVals.find(Name);
1022 if (I != ForwardRefVals.end())
1023 Val = I->second.first;
1026 // If we have the value in the symbol table or fwd-ref table, return it.
1028 if (Val->getType() == Ty) return Val;
1029 Error(Loc, "'@" + Name + "' defined with type '" +
1030 getTypeString(Val->getType()) + "'");
1034 // Otherwise, create a new forward reference for this value and remember it.
1035 GlobalValue *FwdVal;
1036 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1037 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
1039 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1040 GlobalValue::ExternalWeakLinkage, nullptr, Name,
1041 nullptr, GlobalVariable::NotThreadLocal,
1042 PTy->getAddressSpace());
1044 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1048 GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
1049 PointerType *PTy = dyn_cast<PointerType>(Ty);
1051 Error(Loc, "global variable reference must have pointer type");
1055 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
1057 // If this is a forward reference for the value, see if we already created a
1058 // forward ref record.
1060 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
1061 I = ForwardRefValIDs.find(ID);
1062 if (I != ForwardRefValIDs.end())
1063 Val = I->second.first;
1066 // If we have the value in the symbol table or fwd-ref table, return it.
1068 if (Val->getType() == Ty) return Val;
1069 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
1070 getTypeString(Val->getType()) + "'");
1074 // Otherwise, create a new forward reference for this value and remember it.
1075 GlobalValue *FwdVal;
1076 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1077 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
1079 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1080 GlobalValue::ExternalWeakLinkage, nullptr, "");
1082 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1087 //===----------------------------------------------------------------------===//
1088 // Comdat Reference/Resolution Routines.
1089 //===----------------------------------------------------------------------===//
1091 Comdat *LLParser::getComdat(const std::string &Name, LocTy Loc) {
1092 // Look this name up in the comdat symbol table.
1093 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
1094 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
1095 if (I != ComdatSymTab.end())
1098 // Otherwise, create a new forward reference for this value and remember it.
1099 Comdat *C = M->getOrInsertComdat(Name);
1100 ForwardRefComdats[Name] = Loc;
1105 //===----------------------------------------------------------------------===//
1107 //===----------------------------------------------------------------------===//
1109 /// ParseToken - If the current token has the specified kind, eat it and return
1110 /// success. Otherwise, emit the specified error and return failure.
1111 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
1112 if (Lex.getKind() != T)
1113 return TokError(ErrMsg);
1118 /// ParseStringConstant
1119 /// ::= StringConstant
1120 bool LLParser::ParseStringConstant(std::string &Result) {
1121 if (Lex.getKind() != lltok::StringConstant)
1122 return TokError("expected string constant");
1123 Result = Lex.getStrVal();
1130 bool LLParser::ParseUInt32(unsigned &Val) {
1131 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1132 return TokError("expected integer");
1133 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
1134 if (Val64 != unsigned(Val64))
1135 return TokError("expected 32-bit integer (too large)");
1143 bool LLParser::ParseUInt64(uint64_t &Val) {
1144 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1145 return TokError("expected integer");
1146 Val = Lex.getAPSIntVal().getLimitedValue();
1152 /// := 'localdynamic'
1153 /// := 'initialexec'
1155 bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
1156 switch (Lex.getKind()) {
1158 return TokError("expected localdynamic, initialexec or localexec");
1159 case lltok::kw_localdynamic:
1160 TLM = GlobalVariable::LocalDynamicTLSModel;
1162 case lltok::kw_initialexec:
1163 TLM = GlobalVariable::InitialExecTLSModel;
1165 case lltok::kw_localexec:
1166 TLM = GlobalVariable::LocalExecTLSModel;
1174 /// ParseOptionalThreadLocal
1176 /// := 'thread_local'
1177 /// := 'thread_local' '(' tlsmodel ')'
1178 bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
1179 TLM = GlobalVariable::NotThreadLocal;
1180 if (!EatIfPresent(lltok::kw_thread_local))
1183 TLM = GlobalVariable::GeneralDynamicTLSModel;
1184 if (Lex.getKind() == lltok::lparen) {
1186 return ParseTLSModel(TLM) ||
1187 ParseToken(lltok::rparen, "expected ')' after thread local model");
1192 /// ParseOptionalAddrSpace
1194 /// := 'addrspace' '(' uint32 ')'
1195 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
1197 if (!EatIfPresent(lltok::kw_addrspace))
1199 return ParseToken(lltok::lparen, "expected '(' in address space") ||
1200 ParseUInt32(AddrSpace) ||
1201 ParseToken(lltok::rparen, "expected ')' in address space");
1204 /// ParseOptionalParamAttrs - Parse a potentially empty list of parameter attributes.
1205 bool LLParser::ParseOptionalParamAttrs(AttrBuilder &B) {
1206 bool HaveError = false;
1211 lltok::Kind Token = Lex.getKind();
1213 default: // End of attributes.
1215 case lltok::kw_align: {
1217 if (ParseOptionalAlignment(Alignment))
1219 B.addAlignmentAttr(Alignment);
1222 case lltok::kw_byval: B.addAttribute(Attribute::ByVal); break;
1223 case lltok::kw_dereferenceable: {
1225 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1227 B.addDereferenceableAttr(Bytes);
1230 case lltok::kw_dereferenceable_or_null: {
1232 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1234 B.addDereferenceableOrNullAttr(Bytes);
1237 case lltok::kw_inalloca: B.addAttribute(Attribute::InAlloca); break;
1238 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1239 case lltok::kw_nest: B.addAttribute(Attribute::Nest); break;
1240 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1241 case lltok::kw_nocapture: B.addAttribute(Attribute::NoCapture); break;
1242 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1243 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1244 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1245 case lltok::kw_returned: B.addAttribute(Attribute::Returned); break;
1246 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1247 case lltok::kw_sret: B.addAttribute(Attribute::StructRet); break;
1248 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1250 case lltok::kw_alignstack:
1251 case lltok::kw_alwaysinline:
1252 case lltok::kw_builtin:
1253 case lltok::kw_inlinehint:
1254 case lltok::kw_jumptable:
1255 case lltok::kw_minsize:
1256 case lltok::kw_naked:
1257 case lltok::kw_nobuiltin:
1258 case lltok::kw_noduplicate:
1259 case lltok::kw_noimplicitfloat:
1260 case lltok::kw_noinline:
1261 case lltok::kw_nonlazybind:
1262 case lltok::kw_noredzone:
1263 case lltok::kw_noreturn:
1264 case lltok::kw_nounwind:
1265 case lltok::kw_optnone:
1266 case lltok::kw_optsize:
1267 case lltok::kw_returns_twice:
1268 case lltok::kw_sanitize_address:
1269 case lltok::kw_sanitize_memory:
1270 case lltok::kw_sanitize_thread:
1272 case lltok::kw_sspreq:
1273 case lltok::kw_sspstrong:
1274 case lltok::kw_safestack:
1275 case lltok::kw_uwtable:
1276 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1284 /// ParseOptionalReturnAttrs - Parse a potentially empty list of return attributes.
1285 bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
1286 bool HaveError = false;
1291 lltok::Kind Token = Lex.getKind();
1293 default: // End of attributes.
1295 case lltok::kw_dereferenceable: {
1297 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1299 B.addDereferenceableAttr(Bytes);
1302 case lltok::kw_dereferenceable_or_null: {
1304 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1306 B.addDereferenceableOrNullAttr(Bytes);
1309 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1310 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1311 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1312 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1313 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1316 case lltok::kw_align:
1317 case lltok::kw_byval:
1318 case lltok::kw_inalloca:
1319 case lltok::kw_nest:
1320 case lltok::kw_nocapture:
1321 case lltok::kw_returned:
1322 case lltok::kw_sret:
1323 HaveError |= Error(Lex.getLoc(), "invalid use of parameter-only attribute");
1326 case lltok::kw_alignstack:
1327 case lltok::kw_alwaysinline:
1328 case lltok::kw_builtin:
1329 case lltok::kw_cold:
1330 case lltok::kw_inlinehint:
1331 case lltok::kw_jumptable:
1332 case lltok::kw_minsize:
1333 case lltok::kw_naked:
1334 case lltok::kw_nobuiltin:
1335 case lltok::kw_noduplicate:
1336 case lltok::kw_noimplicitfloat:
1337 case lltok::kw_noinline:
1338 case lltok::kw_nonlazybind:
1339 case lltok::kw_noredzone:
1340 case lltok::kw_noreturn:
1341 case lltok::kw_nounwind:
1342 case lltok::kw_optnone:
1343 case lltok::kw_optsize:
1344 case lltok::kw_returns_twice:
1345 case lltok::kw_sanitize_address:
1346 case lltok::kw_sanitize_memory:
1347 case lltok::kw_sanitize_thread:
1349 case lltok::kw_sspreq:
1350 case lltok::kw_sspstrong:
1351 case lltok::kw_safestack:
1352 case lltok::kw_uwtable:
1353 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1356 case lltok::kw_readnone:
1357 case lltok::kw_readonly:
1358 HaveError |= Error(Lex.getLoc(), "invalid use of attribute on return type");
1365 /// ParseOptionalLinkage
1372 /// ::= 'linkonce_odr'
1373 /// ::= 'available_externally'
1376 /// ::= 'extern_weak'
1378 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1380 switch (Lex.getKind()) {
1381 default: Res=GlobalValue::ExternalLinkage; return false;
1382 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1383 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1384 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1385 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1386 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1387 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1388 case lltok::kw_available_externally:
1389 Res = GlobalValue::AvailableExternallyLinkage;
1391 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1392 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1393 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1394 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1401 /// ParseOptionalVisibility
1407 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1408 switch (Lex.getKind()) {
1409 default: Res = GlobalValue::DefaultVisibility; return false;
1410 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1411 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1412 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1418 /// ParseOptionalDLLStorageClass
1423 bool LLParser::ParseOptionalDLLStorageClass(unsigned &Res) {
1424 switch (Lex.getKind()) {
1425 default: Res = GlobalValue::DefaultStorageClass; return false;
1426 case lltok::kw_dllimport: Res = GlobalValue::DLLImportStorageClass; break;
1427 case lltok::kw_dllexport: Res = GlobalValue::DLLExportStorageClass; break;
1433 /// ParseOptionalCallingConv
1437 /// ::= 'intel_ocl_bicc'
1439 /// ::= 'x86_stdcallcc'
1440 /// ::= 'x86_fastcallcc'
1441 /// ::= 'x86_thiscallcc'
1442 /// ::= 'x86_vectorcallcc'
1443 /// ::= 'arm_apcscc'
1444 /// ::= 'arm_aapcscc'
1445 /// ::= 'arm_aapcs_vfpcc'
1446 /// ::= 'msp430_intrcc'
1447 /// ::= 'ptx_kernel'
1448 /// ::= 'ptx_device'
1450 /// ::= 'spir_kernel'
1451 /// ::= 'x86_64_sysvcc'
1452 /// ::= 'x86_64_win64cc'
1453 /// ::= 'webkit_jscc'
1455 /// ::= 'preserve_mostcc'
1456 /// ::= 'preserve_allcc'
1460 bool LLParser::ParseOptionalCallingConv(unsigned &CC) {
1461 switch (Lex.getKind()) {
1462 default: CC = CallingConv::C; return false;
1463 case lltok::kw_ccc: CC = CallingConv::C; break;
1464 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1465 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1466 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1467 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1468 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1469 case lltok::kw_x86_vectorcallcc:CC = CallingConv::X86_VectorCall; break;
1470 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1471 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1472 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1473 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1474 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1475 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1476 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1477 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1478 case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1479 case lltok::kw_x86_64_sysvcc: CC = CallingConv::X86_64_SysV; break;
1480 case lltok::kw_x86_64_win64cc: CC = CallingConv::X86_64_Win64; break;
1481 case lltok::kw_webkit_jscc: CC = CallingConv::WebKit_JS; break;
1482 case lltok::kw_anyregcc: CC = CallingConv::AnyReg; break;
1483 case lltok::kw_preserve_mostcc:CC = CallingConv::PreserveMost; break;
1484 case lltok::kw_preserve_allcc: CC = CallingConv::PreserveAll; break;
1485 case lltok::kw_ghccc: CC = CallingConv::GHC; break;
1486 case lltok::kw_cc: {
1488 return ParseUInt32(CC);
1496 /// ParseMetadataAttachment
1498 bool LLParser::ParseMetadataAttachment(unsigned &Kind, MDNode *&MD) {
1499 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata attachment");
1501 std::string Name = Lex.getStrVal();
1502 Kind = M->getMDKindID(Name);
1505 return ParseMDNode(MD);
1508 /// ParseInstructionMetadata
1509 /// ::= !dbg !42 (',' !dbg !57)*
1510 bool LLParser::ParseInstructionMetadata(Instruction &Inst) {
1512 if (Lex.getKind() != lltok::MetadataVar)
1513 return TokError("expected metadata after comma");
1517 if (ParseMetadataAttachment(MDK, N))
1520 Inst.setMetadata(MDK, N);
1521 if (MDK == LLVMContext::MD_tbaa)
1522 InstsWithTBAATag.push_back(&Inst);
1524 // If this is the end of the list, we're done.
1525 } while (EatIfPresent(lltok::comma));
1529 /// ParseOptionalFunctionMetadata
1531 bool LLParser::ParseOptionalFunctionMetadata(Function &F) {
1532 while (Lex.getKind() == lltok::MetadataVar) {
1535 if (ParseMetadataAttachment(MDK, N))
1538 F.setMetadata(MDK, N);
1543 /// ParseOptionalAlignment
1546 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1548 if (!EatIfPresent(lltok::kw_align))
1550 LocTy AlignLoc = Lex.getLoc();
1551 if (ParseUInt32(Alignment)) return true;
1552 if (!isPowerOf2_32(Alignment))
1553 return Error(AlignLoc, "alignment is not a power of two");
1554 if (Alignment > Value::MaximumAlignment)
1555 return Error(AlignLoc, "huge alignments are not supported yet");
1559 /// ParseOptionalDerefAttrBytes
1561 /// ::= AttrKind '(' 4 ')'
1563 /// where AttrKind is either 'dereferenceable' or 'dereferenceable_or_null'.
1564 bool LLParser::ParseOptionalDerefAttrBytes(lltok::Kind AttrKind,
1566 assert((AttrKind == lltok::kw_dereferenceable ||
1567 AttrKind == lltok::kw_dereferenceable_or_null) &&
1571 if (!EatIfPresent(AttrKind))
1573 LocTy ParenLoc = Lex.getLoc();
1574 if (!EatIfPresent(lltok::lparen))
1575 return Error(ParenLoc, "expected '('");
1576 LocTy DerefLoc = Lex.getLoc();
1577 if (ParseUInt64(Bytes)) return true;
1578 ParenLoc = Lex.getLoc();
1579 if (!EatIfPresent(lltok::rparen))
1580 return Error(ParenLoc, "expected ')'");
1582 return Error(DerefLoc, "dereferenceable bytes must be non-zero");
1586 /// ParseOptionalCommaAlign
1590 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1592 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1593 bool &AteExtraComma) {
1594 AteExtraComma = false;
1595 while (EatIfPresent(lltok::comma)) {
1596 // Metadata at the end is an early exit.
1597 if (Lex.getKind() == lltok::MetadataVar) {
1598 AteExtraComma = true;
1602 if (Lex.getKind() != lltok::kw_align)
1603 return Error(Lex.getLoc(), "expected metadata or 'align'");
1605 if (ParseOptionalAlignment(Alignment)) return true;
1611 /// ParseScopeAndOrdering
1612 /// if isAtomic: ::= 'singlethread'? AtomicOrdering
1615 /// This sets Scope and Ordering to the parsed values.
1616 bool LLParser::ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope,
1617 AtomicOrdering &Ordering) {
1621 Scope = CrossThread;
1622 if (EatIfPresent(lltok::kw_singlethread))
1623 Scope = SingleThread;
1625 return ParseOrdering(Ordering);
1629 /// ::= AtomicOrdering
1631 /// This sets Ordering to the parsed value.
1632 bool LLParser::ParseOrdering(AtomicOrdering &Ordering) {
1633 switch (Lex.getKind()) {
1634 default: return TokError("Expected ordering on atomic instruction");
1635 case lltok::kw_unordered: Ordering = Unordered; break;
1636 case lltok::kw_monotonic: Ordering = Monotonic; break;
1637 case lltok::kw_acquire: Ordering = Acquire; break;
1638 case lltok::kw_release: Ordering = Release; break;
1639 case lltok::kw_acq_rel: Ordering = AcquireRelease; break;
1640 case lltok::kw_seq_cst: Ordering = SequentiallyConsistent; break;
1646 /// ParseOptionalStackAlignment
1648 /// ::= 'alignstack' '(' 4 ')'
1649 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1651 if (!EatIfPresent(lltok::kw_alignstack))
1653 LocTy ParenLoc = Lex.getLoc();
1654 if (!EatIfPresent(lltok::lparen))
1655 return Error(ParenLoc, "expected '('");
1656 LocTy AlignLoc = Lex.getLoc();
1657 if (ParseUInt32(Alignment)) return true;
1658 ParenLoc = Lex.getLoc();
1659 if (!EatIfPresent(lltok::rparen))
1660 return Error(ParenLoc, "expected ')'");
1661 if (!isPowerOf2_32(Alignment))
1662 return Error(AlignLoc, "stack alignment is not a power of two");
1666 /// ParseIndexList - This parses the index list for an insert/extractvalue
1667 /// instruction. This sets AteExtraComma in the case where we eat an extra
1668 /// comma at the end of the line and find that it is followed by metadata.
1669 /// Clients that don't allow metadata can call the version of this function that
1670 /// only takes one argument.
1673 /// ::= (',' uint32)+
1675 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1676 bool &AteExtraComma) {
1677 AteExtraComma = false;
1679 if (Lex.getKind() != lltok::comma)
1680 return TokError("expected ',' as start of index list");
1682 while (EatIfPresent(lltok::comma)) {
1683 if (Lex.getKind() == lltok::MetadataVar) {
1684 if (Indices.empty()) return TokError("expected index");
1685 AteExtraComma = true;
1689 if (ParseUInt32(Idx)) return true;
1690 Indices.push_back(Idx);
1696 //===----------------------------------------------------------------------===//
1698 //===----------------------------------------------------------------------===//
1700 /// ParseType - Parse a type.
1701 bool LLParser::ParseType(Type *&Result, const Twine &Msg, bool AllowVoid) {
1702 SMLoc TypeLoc = Lex.getLoc();
1703 switch (Lex.getKind()) {
1705 return TokError(Msg);
1707 // Type ::= 'float' | 'void' (etc)
1708 Result = Lex.getTyVal();
1712 // Type ::= StructType
1713 if (ParseAnonStructType(Result, false))
1716 case lltok::lsquare:
1717 // Type ::= '[' ... ']'
1718 Lex.Lex(); // eat the lsquare.
1719 if (ParseArrayVectorType(Result, false))
1722 case lltok::less: // Either vector or packed struct.
1723 // Type ::= '<' ... '>'
1725 if (Lex.getKind() == lltok::lbrace) {
1726 if (ParseAnonStructType(Result, true) ||
1727 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1729 } else if (ParseArrayVectorType(Result, true))
1732 case lltok::LocalVar: {
1734 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
1736 // If the type hasn't been defined yet, create a forward definition and
1737 // remember where that forward def'n was seen (in case it never is defined).
1739 Entry.first = StructType::create(Context, Lex.getStrVal());
1740 Entry.second = Lex.getLoc();
1742 Result = Entry.first;
1747 case lltok::LocalVarID: {
1749 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
1751 // If the type hasn't been defined yet, create a forward definition and
1752 // remember where that forward def'n was seen (in case it never is defined).
1754 Entry.first = StructType::create(Context);
1755 Entry.second = Lex.getLoc();
1757 Result = Entry.first;
1763 // Parse the type suffixes.
1765 switch (Lex.getKind()) {
1768 if (!AllowVoid && Result->isVoidTy())
1769 return Error(TypeLoc, "void type only allowed for function results");
1772 // Type ::= Type '*'
1774 if (Result->isLabelTy())
1775 return TokError("basic block pointers are invalid");
1776 if (Result->isVoidTy())
1777 return TokError("pointers to void are invalid - use i8* instead");
1778 if (!PointerType::isValidElementType(Result))
1779 return TokError("pointer to this type is invalid");
1780 Result = PointerType::getUnqual(Result);
1784 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
1785 case lltok::kw_addrspace: {
1786 if (Result->isLabelTy())
1787 return TokError("basic block pointers are invalid");
1788 if (Result->isVoidTy())
1789 return TokError("pointers to void are invalid; use i8* instead");
1790 if (!PointerType::isValidElementType(Result))
1791 return TokError("pointer to this type is invalid");
1793 if (ParseOptionalAddrSpace(AddrSpace) ||
1794 ParseToken(lltok::star, "expected '*' in address space"))
1797 Result = PointerType::get(Result, AddrSpace);
1801 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1803 if (ParseFunctionType(Result))
1810 /// ParseParameterList
1812 /// ::= '(' Arg (',' Arg)* ')'
1814 /// ::= Type OptionalAttributes Value OptionalAttributes
1815 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1816 PerFunctionState &PFS, bool IsMustTailCall,
1817 bool InVarArgsFunc) {
1818 if (ParseToken(lltok::lparen, "expected '(' in call"))
1821 unsigned AttrIndex = 1;
1822 while (Lex.getKind() != lltok::rparen) {
1823 // If this isn't the first argument, we need a comma.
1824 if (!ArgList.empty() &&
1825 ParseToken(lltok::comma, "expected ',' in argument list"))
1828 // Parse an ellipsis if this is a musttail call in a variadic function.
1829 if (Lex.getKind() == lltok::dotdotdot) {
1830 const char *Msg = "unexpected ellipsis in argument list for ";
1831 if (!IsMustTailCall)
1832 return TokError(Twine(Msg) + "non-musttail call");
1834 return TokError(Twine(Msg) + "musttail call in non-varargs function");
1835 Lex.Lex(); // Lex the '...', it is purely for readability.
1836 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1839 // Parse the argument.
1841 Type *ArgTy = nullptr;
1842 AttrBuilder ArgAttrs;
1844 if (ParseType(ArgTy, ArgLoc))
1847 if (ArgTy->isMetadataTy()) {
1848 if (ParseMetadataAsValue(V, PFS))
1851 // Otherwise, handle normal operands.
1852 if (ParseOptionalParamAttrs(ArgAttrs) || ParseValue(ArgTy, V, PFS))
1855 ArgList.push_back(ParamInfo(ArgLoc, V, AttributeSet::get(V->getContext(),
1860 if (IsMustTailCall && InVarArgsFunc)
1861 return TokError("expected '...' at end of argument list for musttail call "
1862 "in varargs function");
1864 Lex.Lex(); // Lex the ')'.
1870 /// ParseArgumentList - Parse the argument list for a function type or function
1872 /// ::= '(' ArgTypeListI ')'
1876 /// ::= ArgTypeList ',' '...'
1877 /// ::= ArgType (',' ArgType)*
1879 bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
1882 assert(Lex.getKind() == lltok::lparen);
1883 Lex.Lex(); // eat the (.
1885 if (Lex.getKind() == lltok::rparen) {
1887 } else if (Lex.getKind() == lltok::dotdotdot) {
1891 LocTy TypeLoc = Lex.getLoc();
1892 Type *ArgTy = nullptr;
1896 if (ParseType(ArgTy) ||
1897 ParseOptionalParamAttrs(Attrs)) return true;
1899 if (ArgTy->isVoidTy())
1900 return Error(TypeLoc, "argument can not have void type");
1902 if (Lex.getKind() == lltok::LocalVar) {
1903 Name = Lex.getStrVal();
1907 if (!FunctionType::isValidArgumentType(ArgTy))
1908 return Error(TypeLoc, "invalid type for function argument");
1910 unsigned AttrIndex = 1;
1911 ArgList.emplace_back(TypeLoc, ArgTy, AttributeSet::get(ArgTy->getContext(),
1912 AttrIndex++, Attrs),
1915 while (EatIfPresent(lltok::comma)) {
1916 // Handle ... at end of arg list.
1917 if (EatIfPresent(lltok::dotdotdot)) {
1922 // Otherwise must be an argument type.
1923 TypeLoc = Lex.getLoc();
1924 if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
1926 if (ArgTy->isVoidTy())
1927 return Error(TypeLoc, "argument can not have void type");
1929 if (Lex.getKind() == lltok::LocalVar) {
1930 Name = Lex.getStrVal();
1936 if (!ArgTy->isFirstClassType())
1937 return Error(TypeLoc, "invalid type for function argument");
1939 ArgList.emplace_back(
1941 AttributeSet::get(ArgTy->getContext(), AttrIndex++, Attrs),
1946 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1949 /// ParseFunctionType
1950 /// ::= Type ArgumentList OptionalAttrs
1951 bool LLParser::ParseFunctionType(Type *&Result) {
1952 assert(Lex.getKind() == lltok::lparen);
1954 if (!FunctionType::isValidReturnType(Result))
1955 return TokError("invalid function return type");
1957 SmallVector<ArgInfo, 8> ArgList;
1959 if (ParseArgumentList(ArgList, isVarArg))
1962 // Reject names on the arguments lists.
1963 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1964 if (!ArgList[i].Name.empty())
1965 return Error(ArgList[i].Loc, "argument name invalid in function type");
1966 if (ArgList[i].Attrs.hasAttributes(i + 1))
1967 return Error(ArgList[i].Loc,
1968 "argument attributes invalid in function type");
1971 SmallVector<Type*, 16> ArgListTy;
1972 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1973 ArgListTy.push_back(ArgList[i].Ty);
1975 Result = FunctionType::get(Result, ArgListTy, isVarArg);
1979 /// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
1981 bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
1982 SmallVector<Type*, 8> Elts;
1983 if (ParseStructBody(Elts)) return true;
1985 Result = StructType::get(Context, Elts, Packed);
1989 /// ParseStructDefinition - Parse a struct in a 'type' definition.
1990 bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
1991 std::pair<Type*, LocTy> &Entry,
1993 // If the type was already defined, diagnose the redefinition.
1994 if (Entry.first && !Entry.second.isValid())
1995 return Error(TypeLoc, "redefinition of type");
1997 // If we have opaque, just return without filling in the definition for the
1998 // struct. This counts as a definition as far as the .ll file goes.
1999 if (EatIfPresent(lltok::kw_opaque)) {
2000 // This type is being defined, so clear the location to indicate this.
2001 Entry.second = SMLoc();
2003 // If this type number has never been uttered, create it.
2005 Entry.first = StructType::create(Context, Name);
2006 ResultTy = Entry.first;
2010 // If the type starts with '<', then it is either a packed struct or a vector.
2011 bool isPacked = EatIfPresent(lltok::less);
2013 // If we don't have a struct, then we have a random type alias, which we
2014 // accept for compatibility with old files. These types are not allowed to be
2015 // forward referenced and not allowed to be recursive.
2016 if (Lex.getKind() != lltok::lbrace) {
2018 return Error(TypeLoc, "forward references to non-struct type");
2022 return ParseArrayVectorType(ResultTy, true);
2023 return ParseType(ResultTy);
2026 // This type is being defined, so clear the location to indicate this.
2027 Entry.second = SMLoc();
2029 // If this type number has never been uttered, create it.
2031 Entry.first = StructType::create(Context, Name);
2033 StructType *STy = cast<StructType>(Entry.first);
2035 SmallVector<Type*, 8> Body;
2036 if (ParseStructBody(Body) ||
2037 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
2040 STy->setBody(Body, isPacked);
2046 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
2049 /// ::= '{' Type (',' Type)* '}'
2050 /// ::= '<' '{' '}' '>'
2051 /// ::= '<' '{' Type (',' Type)* '}' '>'
2052 bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
2053 assert(Lex.getKind() == lltok::lbrace);
2054 Lex.Lex(); // Consume the '{'
2056 // Handle the empty struct.
2057 if (EatIfPresent(lltok::rbrace))
2060 LocTy EltTyLoc = Lex.getLoc();
2062 if (ParseType(Ty)) return true;
2065 if (!StructType::isValidElementType(Ty))
2066 return Error(EltTyLoc, "invalid element type for struct");
2068 while (EatIfPresent(lltok::comma)) {
2069 EltTyLoc = Lex.getLoc();
2070 if (ParseType(Ty)) return true;
2072 if (!StructType::isValidElementType(Ty))
2073 return Error(EltTyLoc, "invalid element type for struct");
2078 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
2081 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
2082 /// token has already been consumed.
2084 /// ::= '[' APSINTVAL 'x' Types ']'
2085 /// ::= '<' APSINTVAL 'x' Types '>'
2086 bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
2087 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
2088 Lex.getAPSIntVal().getBitWidth() > 64)
2089 return TokError("expected number in address space");
2091 LocTy SizeLoc = Lex.getLoc();
2092 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
2095 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
2098 LocTy TypeLoc = Lex.getLoc();
2099 Type *EltTy = nullptr;
2100 if (ParseType(EltTy)) return true;
2102 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
2103 "expected end of sequential type"))
2108 return Error(SizeLoc, "zero element vector is illegal");
2109 if ((unsigned)Size != Size)
2110 return Error(SizeLoc, "size too large for vector");
2111 if (!VectorType::isValidElementType(EltTy))
2112 return Error(TypeLoc, "invalid vector element type");
2113 Result = VectorType::get(EltTy, unsigned(Size));
2115 if (!ArrayType::isValidElementType(EltTy))
2116 return Error(TypeLoc, "invalid array element type");
2117 Result = ArrayType::get(EltTy, Size);
2122 //===----------------------------------------------------------------------===//
2123 // Function Semantic Analysis.
2124 //===----------------------------------------------------------------------===//
2126 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
2128 : P(p), F(f), FunctionNumber(functionNumber) {
2130 // Insert unnamed arguments into the NumberedVals list.
2131 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
2134 NumberedVals.push_back(AI);
2137 LLParser::PerFunctionState::~PerFunctionState() {
2138 // If there were any forward referenced non-basicblock values, delete them.
2139 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
2140 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
2141 if (!isa<BasicBlock>(I->second.first)) {
2142 I->second.first->replaceAllUsesWith(
2143 UndefValue::get(I->second.first->getType()));
2144 delete I->second.first;
2145 I->second.first = nullptr;
2148 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2149 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
2150 if (!isa<BasicBlock>(I->second.first)) {
2151 I->second.first->replaceAllUsesWith(
2152 UndefValue::get(I->second.first->getType()));
2153 delete I->second.first;
2154 I->second.first = nullptr;
2158 bool LLParser::PerFunctionState::FinishFunction() {
2159 if (!ForwardRefVals.empty())
2160 return P.Error(ForwardRefVals.begin()->second.second,
2161 "use of undefined value '%" + ForwardRefVals.begin()->first +
2163 if (!ForwardRefValIDs.empty())
2164 return P.Error(ForwardRefValIDs.begin()->second.second,
2165 "use of undefined value '%" +
2166 Twine(ForwardRefValIDs.begin()->first) + "'");
2171 /// GetVal - Get a value with the specified name or ID, creating a
2172 /// forward reference record if needed. This can return null if the value
2173 /// exists but does not have the right type.
2174 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
2175 Type *Ty, LocTy Loc) {
2176 // Look this name up in the normal function symbol table.
2177 Value *Val = F.getValueSymbolTable().lookup(Name);
2179 // If this is a forward reference for the value, see if we already created a
2180 // forward ref record.
2182 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2183 I = ForwardRefVals.find(Name);
2184 if (I != ForwardRefVals.end())
2185 Val = I->second.first;
2188 // If we have the value in the symbol table or fwd-ref table, return it.
2190 if (Val->getType() == Ty) return Val;
2191 if (Ty->isLabelTy())
2192 P.Error(Loc, "'%" + Name + "' is not a basic block");
2194 P.Error(Loc, "'%" + Name + "' defined with type '" +
2195 getTypeString(Val->getType()) + "'");
2199 // Don't make placeholders with invalid type.
2200 if (!Ty->isFirstClassType()) {
2201 P.Error(Loc, "invalid use of a non-first-class type");
2205 // Otherwise, create a new forward reference for this value and remember it.
2207 if (Ty->isLabelTy())
2208 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2210 FwdVal = new Argument(Ty, Name);
2212 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2216 Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty,
2218 // Look this name up in the normal function symbol table.
2219 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
2221 // If this is a forward reference for the value, see if we already created a
2222 // forward ref record.
2224 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2225 I = ForwardRefValIDs.find(ID);
2226 if (I != ForwardRefValIDs.end())
2227 Val = I->second.first;
2230 // If we have the value in the symbol table or fwd-ref table, return it.
2232 if (Val->getType() == Ty) return Val;
2233 if (Ty->isLabelTy())
2234 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
2236 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
2237 getTypeString(Val->getType()) + "'");
2241 if (!Ty->isFirstClassType()) {
2242 P.Error(Loc, "invalid use of a non-first-class type");
2246 // Otherwise, create a new forward reference for this value and remember it.
2248 if (Ty->isLabelTy())
2249 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2251 FwdVal = new Argument(Ty);
2253 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2257 /// SetInstName - After an instruction is parsed and inserted into its
2258 /// basic block, this installs its name.
2259 bool LLParser::PerFunctionState::SetInstName(int NameID,
2260 const std::string &NameStr,
2261 LocTy NameLoc, Instruction *Inst) {
2262 // If this instruction has void type, it cannot have a name or ID specified.
2263 if (Inst->getType()->isVoidTy()) {
2264 if (NameID != -1 || !NameStr.empty())
2265 return P.Error(NameLoc, "instructions returning void cannot have a name");
2269 // If this was a numbered instruction, verify that the instruction is the
2270 // expected value and resolve any forward references.
2271 if (NameStr.empty()) {
2272 // If neither a name nor an ID was specified, just use the next ID.
2274 NameID = NumberedVals.size();
2276 if (unsigned(NameID) != NumberedVals.size())
2277 return P.Error(NameLoc, "instruction expected to be numbered '%" +
2278 Twine(NumberedVals.size()) + "'");
2280 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
2281 ForwardRefValIDs.find(NameID);
2282 if (FI != ForwardRefValIDs.end()) {
2283 if (FI->second.first->getType() != Inst->getType())
2284 return P.Error(NameLoc, "instruction forward referenced with type '" +
2285 getTypeString(FI->second.first->getType()) + "'");
2286 FI->second.first->replaceAllUsesWith(Inst);
2287 delete FI->second.first;
2288 ForwardRefValIDs.erase(FI);
2291 NumberedVals.push_back(Inst);
2295 // Otherwise, the instruction had a name. Resolve forward refs and set it.
2296 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2297 FI = ForwardRefVals.find(NameStr);
2298 if (FI != ForwardRefVals.end()) {
2299 if (FI->second.first->getType() != Inst->getType())
2300 return P.Error(NameLoc, "instruction forward referenced with type '" +
2301 getTypeString(FI->second.first->getType()) + "'");
2302 FI->second.first->replaceAllUsesWith(Inst);
2303 delete FI->second.first;
2304 ForwardRefVals.erase(FI);
2307 // Set the name on the instruction.
2308 Inst->setName(NameStr);
2310 if (Inst->getName() != NameStr)
2311 return P.Error(NameLoc, "multiple definition of local value named '" +
2316 /// GetBB - Get a basic block with the specified name or ID, creating a
2317 /// forward reference record if needed.
2318 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2320 return dyn_cast_or_null<BasicBlock>(GetVal(Name,
2321 Type::getLabelTy(F.getContext()), Loc));
2324 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2325 return dyn_cast_or_null<BasicBlock>(GetVal(ID,
2326 Type::getLabelTy(F.getContext()), Loc));
2329 /// DefineBB - Define the specified basic block, which is either named or
2330 /// unnamed. If there is an error, this returns null otherwise it returns
2331 /// the block being defined.
2332 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2336 BB = GetBB(NumberedVals.size(), Loc);
2338 BB = GetBB(Name, Loc);
2339 if (!BB) return nullptr; // Already diagnosed error.
2341 // Move the block to the end of the function. Forward ref'd blocks are
2342 // inserted wherever they happen to be referenced.
2343 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2345 // Remove the block from forward ref sets.
2347 ForwardRefValIDs.erase(NumberedVals.size());
2348 NumberedVals.push_back(BB);
2350 // BB forward references are already in the function symbol table.
2351 ForwardRefVals.erase(Name);
2357 //===----------------------------------------------------------------------===//
2359 //===----------------------------------------------------------------------===//
2361 /// ParseValID - Parse an abstract value that doesn't necessarily have a
2362 /// type implied. For example, if we parse "4" we don't know what integer type
2363 /// it has. The value will later be combined with its type and checked for
2364 /// sanity. PFS is used to convert function-local operands of metadata (since
2365 /// metadata operands are not just parsed here but also converted to values).
2366 /// PFS can be null when we are not parsing metadata values inside a function.
2367 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2368 ID.Loc = Lex.getLoc();
2369 switch (Lex.getKind()) {
2370 default: return TokError("expected value token");
2371 case lltok::GlobalID: // @42
2372 ID.UIntVal = Lex.getUIntVal();
2373 ID.Kind = ValID::t_GlobalID;
2375 case lltok::GlobalVar: // @foo
2376 ID.StrVal = Lex.getStrVal();
2377 ID.Kind = ValID::t_GlobalName;
2379 case lltok::LocalVarID: // %42
2380 ID.UIntVal = Lex.getUIntVal();
2381 ID.Kind = ValID::t_LocalID;
2383 case lltok::LocalVar: // %foo
2384 ID.StrVal = Lex.getStrVal();
2385 ID.Kind = ValID::t_LocalName;
2388 ID.APSIntVal = Lex.getAPSIntVal();
2389 ID.Kind = ValID::t_APSInt;
2391 case lltok::APFloat:
2392 ID.APFloatVal = Lex.getAPFloatVal();
2393 ID.Kind = ValID::t_APFloat;
2395 case lltok::kw_true:
2396 ID.ConstantVal = ConstantInt::getTrue(Context);
2397 ID.Kind = ValID::t_Constant;
2399 case lltok::kw_false:
2400 ID.ConstantVal = ConstantInt::getFalse(Context);
2401 ID.Kind = ValID::t_Constant;
2403 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2404 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2405 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2407 case lltok::lbrace: {
2408 // ValID ::= '{' ConstVector '}'
2410 SmallVector<Constant*, 16> Elts;
2411 if (ParseGlobalValueVector(Elts) ||
2412 ParseToken(lltok::rbrace, "expected end of struct constant"))
2415 ID.ConstantStructElts = new Constant*[Elts.size()];
2416 ID.UIntVal = Elts.size();
2417 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2418 ID.Kind = ValID::t_ConstantStruct;
2422 // ValID ::= '<' ConstVector '>' --> Vector.
2423 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2425 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2427 SmallVector<Constant*, 16> Elts;
2428 LocTy FirstEltLoc = Lex.getLoc();
2429 if (ParseGlobalValueVector(Elts) ||
2431 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2432 ParseToken(lltok::greater, "expected end of constant"))
2435 if (isPackedStruct) {
2436 ID.ConstantStructElts = new Constant*[Elts.size()];
2437 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2438 ID.UIntVal = Elts.size();
2439 ID.Kind = ValID::t_PackedConstantStruct;
2444 return Error(ID.Loc, "constant vector must not be empty");
2446 if (!Elts[0]->getType()->isIntegerTy() &&
2447 !Elts[0]->getType()->isFloatingPointTy() &&
2448 !Elts[0]->getType()->isPointerTy())
2449 return Error(FirstEltLoc,
2450 "vector elements must have integer, pointer or floating point type");
2452 // Verify that all the vector elements have the same type.
2453 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2454 if (Elts[i]->getType() != Elts[0]->getType())
2455 return Error(FirstEltLoc,
2456 "vector element #" + Twine(i) +
2457 " is not of type '" + getTypeString(Elts[0]->getType()));
2459 ID.ConstantVal = ConstantVector::get(Elts);
2460 ID.Kind = ValID::t_Constant;
2463 case lltok::lsquare: { // Array Constant
2465 SmallVector<Constant*, 16> Elts;
2466 LocTy FirstEltLoc = Lex.getLoc();
2467 if (ParseGlobalValueVector(Elts) ||
2468 ParseToken(lltok::rsquare, "expected end of array constant"))
2471 // Handle empty element.
2473 // Use undef instead of an array because it's inconvenient to determine
2474 // the element type at this point, there being no elements to examine.
2475 ID.Kind = ValID::t_EmptyArray;
2479 if (!Elts[0]->getType()->isFirstClassType())
2480 return Error(FirstEltLoc, "invalid array element type: " +
2481 getTypeString(Elts[0]->getType()));
2483 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2485 // Verify all elements are correct type!
2486 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2487 if (Elts[i]->getType() != Elts[0]->getType())
2488 return Error(FirstEltLoc,
2489 "array element #" + Twine(i) +
2490 " is not of type '" + getTypeString(Elts[0]->getType()));
2493 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2494 ID.Kind = ValID::t_Constant;
2497 case lltok::kw_c: // c "foo"
2499 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2501 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2502 ID.Kind = ValID::t_Constant;
2505 case lltok::kw_asm: {
2506 // ValID ::= 'asm' SideEffect? AlignStack? IntelDialect? STRINGCONSTANT ','
2508 bool HasSideEffect, AlignStack, AsmDialect;
2510 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2511 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2512 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2513 ParseStringConstant(ID.StrVal) ||
2514 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2515 ParseToken(lltok::StringConstant, "expected constraint string"))
2517 ID.StrVal2 = Lex.getStrVal();
2518 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2519 (unsigned(AsmDialect)<<2);
2520 ID.Kind = ValID::t_InlineAsm;
2524 case lltok::kw_blockaddress: {
2525 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2530 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2532 ParseToken(lltok::comma, "expected comma in block address expression")||
2533 ParseValID(Label) ||
2534 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2537 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2538 return Error(Fn.Loc, "expected function name in blockaddress");
2539 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2540 return Error(Label.Loc, "expected basic block name in blockaddress");
2542 // Try to find the function (but skip it if it's forward-referenced).
2543 GlobalValue *GV = nullptr;
2544 if (Fn.Kind == ValID::t_GlobalID) {
2545 if (Fn.UIntVal < NumberedVals.size())
2546 GV = NumberedVals[Fn.UIntVal];
2547 } else if (!ForwardRefVals.count(Fn.StrVal)) {
2548 GV = M->getNamedValue(Fn.StrVal);
2550 Function *F = nullptr;
2552 // Confirm that it's actually a function with a definition.
2553 if (!isa<Function>(GV))
2554 return Error(Fn.Loc, "expected function name in blockaddress");
2555 F = cast<Function>(GV);
2556 if (F->isDeclaration())
2557 return Error(Fn.Loc, "cannot take blockaddress inside a declaration");
2561 // Make a global variable as a placeholder for this reference.
2562 GlobalValue *&FwdRef =
2563 ForwardRefBlockAddresses.insert(std::make_pair(
2565 std::map<ValID, GlobalValue *>()))
2566 .first->second.insert(std::make_pair(std::move(Label), nullptr))
2569 FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context), false,
2570 GlobalValue::InternalLinkage, nullptr, "");
2571 ID.ConstantVal = FwdRef;
2572 ID.Kind = ValID::t_Constant;
2576 // We found the function; now find the basic block. Don't use PFS, since we
2577 // might be inside a constant expression.
2579 if (BlockAddressPFS && F == &BlockAddressPFS->getFunction()) {
2580 if (Label.Kind == ValID::t_LocalID)
2581 BB = BlockAddressPFS->GetBB(Label.UIntVal, Label.Loc);
2583 BB = BlockAddressPFS->GetBB(Label.StrVal, Label.Loc);
2585 return Error(Label.Loc, "referenced value is not a basic block");
2587 if (Label.Kind == ValID::t_LocalID)
2588 return Error(Label.Loc, "cannot take address of numeric label after "
2589 "the function is defined");
2590 BB = dyn_cast_or_null<BasicBlock>(
2591 F->getValueSymbolTable().lookup(Label.StrVal));
2593 return Error(Label.Loc, "referenced value is not a basic block");
2596 ID.ConstantVal = BlockAddress::get(F, BB);
2597 ID.Kind = ValID::t_Constant;
2601 case lltok::kw_trunc:
2602 case lltok::kw_zext:
2603 case lltok::kw_sext:
2604 case lltok::kw_fptrunc:
2605 case lltok::kw_fpext:
2606 case lltok::kw_bitcast:
2607 case lltok::kw_addrspacecast:
2608 case lltok::kw_uitofp:
2609 case lltok::kw_sitofp:
2610 case lltok::kw_fptoui:
2611 case lltok::kw_fptosi:
2612 case lltok::kw_inttoptr:
2613 case lltok::kw_ptrtoint: {
2614 unsigned Opc = Lex.getUIntVal();
2615 Type *DestTy = nullptr;
2618 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2619 ParseGlobalTypeAndValue(SrcVal) ||
2620 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2621 ParseType(DestTy) ||
2622 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2624 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2625 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2626 getTypeString(SrcVal->getType()) + "' to '" +
2627 getTypeString(DestTy) + "'");
2628 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2630 ID.Kind = ValID::t_Constant;
2633 case lltok::kw_extractvalue: {
2636 SmallVector<unsigned, 4> Indices;
2637 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2638 ParseGlobalTypeAndValue(Val) ||
2639 ParseIndexList(Indices) ||
2640 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2643 if (!Val->getType()->isAggregateType())
2644 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2645 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
2646 return Error(ID.Loc, "invalid indices for extractvalue");
2647 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
2648 ID.Kind = ValID::t_Constant;
2651 case lltok::kw_insertvalue: {
2653 Constant *Val0, *Val1;
2654 SmallVector<unsigned, 4> Indices;
2655 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2656 ParseGlobalTypeAndValue(Val0) ||
2657 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2658 ParseGlobalTypeAndValue(Val1) ||
2659 ParseIndexList(Indices) ||
2660 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2662 if (!Val0->getType()->isAggregateType())
2663 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2665 ExtractValueInst::getIndexedType(Val0->getType(), Indices);
2667 return Error(ID.Loc, "invalid indices for insertvalue");
2668 if (IndexedType != Val1->getType())
2669 return Error(ID.Loc, "insertvalue operand and field disagree in type: '" +
2670 getTypeString(Val1->getType()) +
2671 "' instead of '" + getTypeString(IndexedType) +
2673 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
2674 ID.Kind = ValID::t_Constant;
2677 case lltok::kw_icmp:
2678 case lltok::kw_fcmp: {
2679 unsigned PredVal, Opc = Lex.getUIntVal();
2680 Constant *Val0, *Val1;
2682 if (ParseCmpPredicate(PredVal, Opc) ||
2683 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2684 ParseGlobalTypeAndValue(Val0) ||
2685 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2686 ParseGlobalTypeAndValue(Val1) ||
2687 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2690 if (Val0->getType() != Val1->getType())
2691 return Error(ID.Loc, "compare operands must have the same type");
2693 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2695 if (Opc == Instruction::FCmp) {
2696 if (!Val0->getType()->isFPOrFPVectorTy())
2697 return Error(ID.Loc, "fcmp requires floating point operands");
2698 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2700 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2701 if (!Val0->getType()->isIntOrIntVectorTy() &&
2702 !Val0->getType()->getScalarType()->isPointerTy())
2703 return Error(ID.Loc, "icmp requires pointer or integer operands");
2704 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2706 ID.Kind = ValID::t_Constant;
2710 // Binary Operators.
2712 case lltok::kw_fadd:
2714 case lltok::kw_fsub:
2716 case lltok::kw_fmul:
2717 case lltok::kw_udiv:
2718 case lltok::kw_sdiv:
2719 case lltok::kw_fdiv:
2720 case lltok::kw_urem:
2721 case lltok::kw_srem:
2722 case lltok::kw_frem:
2724 case lltok::kw_lshr:
2725 case lltok::kw_ashr: {
2729 unsigned Opc = Lex.getUIntVal();
2730 Constant *Val0, *Val1;
2732 LocTy ModifierLoc = Lex.getLoc();
2733 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
2734 Opc == Instruction::Mul || Opc == Instruction::Shl) {
2735 if (EatIfPresent(lltok::kw_nuw))
2737 if (EatIfPresent(lltok::kw_nsw)) {
2739 if (EatIfPresent(lltok::kw_nuw))
2742 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
2743 Opc == Instruction::LShr || Opc == Instruction::AShr) {
2744 if (EatIfPresent(lltok::kw_exact))
2747 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2748 ParseGlobalTypeAndValue(Val0) ||
2749 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2750 ParseGlobalTypeAndValue(Val1) ||
2751 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2753 if (Val0->getType() != Val1->getType())
2754 return Error(ID.Loc, "operands of constexpr must have same type");
2755 if (!Val0->getType()->isIntOrIntVectorTy()) {
2757 return Error(ModifierLoc, "nuw only applies to integer operations");
2759 return Error(ModifierLoc, "nsw only applies to integer operations");
2761 // Check that the type is valid for the operator.
2763 case Instruction::Add:
2764 case Instruction::Sub:
2765 case Instruction::Mul:
2766 case Instruction::UDiv:
2767 case Instruction::SDiv:
2768 case Instruction::URem:
2769 case Instruction::SRem:
2770 case Instruction::Shl:
2771 case Instruction::AShr:
2772 case Instruction::LShr:
2773 if (!Val0->getType()->isIntOrIntVectorTy())
2774 return Error(ID.Loc, "constexpr requires integer operands");
2776 case Instruction::FAdd:
2777 case Instruction::FSub:
2778 case Instruction::FMul:
2779 case Instruction::FDiv:
2780 case Instruction::FRem:
2781 if (!Val0->getType()->isFPOrFPVectorTy())
2782 return Error(ID.Loc, "constexpr requires fp operands");
2784 default: llvm_unreachable("Unknown binary operator!");
2787 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2788 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2789 if (Exact) Flags |= PossiblyExactOperator::IsExact;
2790 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2792 ID.Kind = ValID::t_Constant;
2796 // Logical Operations
2799 case lltok::kw_xor: {
2800 unsigned Opc = Lex.getUIntVal();
2801 Constant *Val0, *Val1;
2803 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2804 ParseGlobalTypeAndValue(Val0) ||
2805 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2806 ParseGlobalTypeAndValue(Val1) ||
2807 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2809 if (Val0->getType() != Val1->getType())
2810 return Error(ID.Loc, "operands of constexpr must have same type");
2811 if (!Val0->getType()->isIntOrIntVectorTy())
2812 return Error(ID.Loc,
2813 "constexpr requires integer or integer vector operands");
2814 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2815 ID.Kind = ValID::t_Constant;
2819 case lltok::kw_getelementptr:
2820 case lltok::kw_shufflevector:
2821 case lltok::kw_insertelement:
2822 case lltok::kw_extractelement:
2823 case lltok::kw_select: {
2824 unsigned Opc = Lex.getUIntVal();
2825 SmallVector<Constant*, 16> Elts;
2826 bool InBounds = false;
2830 if (Opc == Instruction::GetElementPtr)
2831 InBounds = EatIfPresent(lltok::kw_inbounds);
2833 if (ParseToken(lltok::lparen, "expected '(' in constantexpr"))
2836 LocTy ExplicitTypeLoc = Lex.getLoc();
2837 if (Opc == Instruction::GetElementPtr) {
2838 if (ParseType(Ty) ||
2839 ParseToken(lltok::comma, "expected comma after getelementptr's type"))
2843 if (ParseGlobalValueVector(Elts) ||
2844 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2847 if (Opc == Instruction::GetElementPtr) {
2848 if (Elts.size() == 0 ||
2849 !Elts[0]->getType()->getScalarType()->isPointerTy())
2850 return Error(ID.Loc, "base of getelementptr must be a pointer");
2852 Type *BaseType = Elts[0]->getType();
2853 auto *BasePointerType = cast<PointerType>(BaseType->getScalarType());
2854 if (Ty != BasePointerType->getElementType())
2857 "explicit pointee type doesn't match operand's pointee type");
2859 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
2860 for (Constant *Val : Indices) {
2861 Type *ValTy = Val->getType();
2862 if (!ValTy->getScalarType()->isIntegerTy())
2863 return Error(ID.Loc, "getelementptr index must be an integer");
2864 if (ValTy->isVectorTy() != BaseType->isVectorTy())
2865 return Error(ID.Loc, "getelementptr index type missmatch");
2866 if (ValTy->isVectorTy()) {
2867 unsigned ValNumEl = cast<VectorType>(ValTy)->getNumElements();
2868 unsigned PtrNumEl = cast<VectorType>(BaseType)->getNumElements();
2869 if (ValNumEl != PtrNumEl)
2872 "getelementptr vector index has a wrong number of elements");
2876 SmallPtrSet<const Type*, 4> Visited;
2877 if (!Indices.empty() && !Ty->isSized(&Visited))
2878 return Error(ID.Loc, "base element of getelementptr must be sized");
2880 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
2881 return Error(ID.Loc, "invalid getelementptr indices");
2883 ConstantExpr::getGetElementPtr(Ty, Elts[0], Indices, InBounds);
2884 } else if (Opc == Instruction::Select) {
2885 if (Elts.size() != 3)
2886 return Error(ID.Loc, "expected three operands to select");
2887 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2889 return Error(ID.Loc, Reason);
2890 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2891 } else if (Opc == Instruction::ShuffleVector) {
2892 if (Elts.size() != 3)
2893 return Error(ID.Loc, "expected three operands to shufflevector");
2894 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2895 return Error(ID.Loc, "invalid operands to shufflevector");
2897 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2898 } else if (Opc == Instruction::ExtractElement) {
2899 if (Elts.size() != 2)
2900 return Error(ID.Loc, "expected two operands to extractelement");
2901 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2902 return Error(ID.Loc, "invalid extractelement operands");
2903 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2905 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2906 if (Elts.size() != 3)
2907 return Error(ID.Loc, "expected three operands to insertelement");
2908 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2909 return Error(ID.Loc, "invalid insertelement operands");
2911 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2914 ID.Kind = ValID::t_Constant;
2923 /// ParseGlobalValue - Parse a global value with the specified type.
2924 bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
2928 bool Parsed = ParseValID(ID) ||
2929 ConvertValIDToValue(Ty, ID, V, nullptr);
2930 if (V && !(C = dyn_cast<Constant>(V)))
2931 return Error(ID.Loc, "global values must be constants");
2935 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2937 return ParseType(Ty) ||
2938 ParseGlobalValue(Ty, V);
2941 bool LLParser::parseOptionalComdat(StringRef GlobalName, Comdat *&C) {
2944 LocTy KwLoc = Lex.getLoc();
2945 if (!EatIfPresent(lltok::kw_comdat))
2948 if (EatIfPresent(lltok::lparen)) {
2949 if (Lex.getKind() != lltok::ComdatVar)
2950 return TokError("expected comdat variable");
2951 C = getComdat(Lex.getStrVal(), Lex.getLoc());
2953 if (ParseToken(lltok::rparen, "expected ')' after comdat var"))
2956 if (GlobalName.empty())
2957 return TokError("comdat cannot be unnamed");
2958 C = getComdat(GlobalName, KwLoc);
2964 /// ParseGlobalValueVector
2966 /// ::= TypeAndValue (',' TypeAndValue)*
2967 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant *> &Elts) {
2969 if (Lex.getKind() == lltok::rbrace ||
2970 Lex.getKind() == lltok::rsquare ||
2971 Lex.getKind() == lltok::greater ||
2972 Lex.getKind() == lltok::rparen)
2976 if (ParseGlobalTypeAndValue(C)) return true;
2979 while (EatIfPresent(lltok::comma)) {
2980 if (ParseGlobalTypeAndValue(C)) return true;
2987 bool LLParser::ParseMDTuple(MDNode *&MD, bool IsDistinct) {
2988 SmallVector<Metadata *, 16> Elts;
2989 if (ParseMDNodeVector(Elts))
2992 MD = (IsDistinct ? MDTuple::getDistinct : MDTuple::get)(Context, Elts);
2999 /// ::= !DILocation(...)
3000 bool LLParser::ParseMDNode(MDNode *&N) {
3001 if (Lex.getKind() == lltok::MetadataVar)
3002 return ParseSpecializedMDNode(N);
3004 return ParseToken(lltok::exclaim, "expected '!' here") ||
3008 bool LLParser::ParseMDNodeTail(MDNode *&N) {
3010 if (Lex.getKind() == lltok::lbrace)
3011 return ParseMDTuple(N);
3014 return ParseMDNodeID(N);
3019 /// Structure to represent an optional metadata field.
3020 template <class FieldTy> struct MDFieldImpl {
3021 typedef MDFieldImpl ImplTy;
3025 void assign(FieldTy Val) {
3027 this->Val = std::move(Val);
3030 explicit MDFieldImpl(FieldTy Default)
3031 : Val(std::move(Default)), Seen(false) {}
3034 struct MDUnsignedField : public MDFieldImpl<uint64_t> {
3037 MDUnsignedField(uint64_t Default = 0, uint64_t Max = UINT64_MAX)
3038 : ImplTy(Default), Max(Max) {}
3040 struct LineField : public MDUnsignedField {
3041 LineField() : MDUnsignedField(0, UINT32_MAX) {}
3043 struct ColumnField : public MDUnsignedField {
3044 ColumnField() : MDUnsignedField(0, UINT16_MAX) {}
3046 struct DwarfTagField : public MDUnsignedField {
3047 DwarfTagField() : MDUnsignedField(0, dwarf::DW_TAG_hi_user) {}
3048 DwarfTagField(dwarf::Tag DefaultTag)
3049 : MDUnsignedField(DefaultTag, dwarf::DW_TAG_hi_user) {}
3051 struct DwarfAttEncodingField : public MDUnsignedField {
3052 DwarfAttEncodingField() : MDUnsignedField(0, dwarf::DW_ATE_hi_user) {}
3054 struct DwarfVirtualityField : public MDUnsignedField {
3055 DwarfVirtualityField() : MDUnsignedField(0, dwarf::DW_VIRTUALITY_max) {}
3057 struct DwarfLangField : public MDUnsignedField {
3058 DwarfLangField() : MDUnsignedField(0, dwarf::DW_LANG_hi_user) {}
3061 struct DIFlagField : public MDUnsignedField {
3062 DIFlagField() : MDUnsignedField(0, UINT32_MAX) {}
3065 struct MDSignedField : public MDFieldImpl<int64_t> {
3069 MDSignedField(int64_t Default = 0)
3070 : ImplTy(Default), Min(INT64_MIN), Max(INT64_MAX) {}
3071 MDSignedField(int64_t Default, int64_t Min, int64_t Max)
3072 : ImplTy(Default), Min(Min), Max(Max) {}
3075 struct MDBoolField : public MDFieldImpl<bool> {
3076 MDBoolField(bool Default = false) : ImplTy(Default) {}
3078 struct MDField : public MDFieldImpl<Metadata *> {
3081 MDField(bool AllowNull = true) : ImplTy(nullptr), AllowNull(AllowNull) {}
3083 struct MDConstant : public MDFieldImpl<ConstantAsMetadata *> {
3084 MDConstant() : ImplTy(nullptr) {}
3086 struct MDStringField : public MDFieldImpl<MDString *> {
3088 MDStringField(bool AllowEmpty = true)
3089 : ImplTy(nullptr), AllowEmpty(AllowEmpty) {}
3091 struct MDFieldList : public MDFieldImpl<SmallVector<Metadata *, 4>> {
3092 MDFieldList() : ImplTy(SmallVector<Metadata *, 4>()) {}
3100 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3101 MDUnsignedField &Result) {
3102 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
3103 return TokError("expected unsigned integer");
3105 auto &U = Lex.getAPSIntVal();
3106 if (U.ugt(Result.Max))
3107 return TokError("value for '" + Name + "' too large, limit is " +
3109 Result.assign(U.getZExtValue());
3110 assert(Result.Val <= Result.Max && "Expected value in range");
3116 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, LineField &Result) {
3117 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3120 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, ColumnField &Result) {
3121 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3125 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfTagField &Result) {
3126 if (Lex.getKind() == lltok::APSInt)
3127 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3129 if (Lex.getKind() != lltok::DwarfTag)
3130 return TokError("expected DWARF tag");
3132 unsigned Tag = dwarf::getTag(Lex.getStrVal());
3133 if (Tag == dwarf::DW_TAG_invalid)
3134 return TokError("invalid DWARF tag" + Twine(" '") + Lex.getStrVal() + "'");
3135 assert(Tag <= Result.Max && "Expected valid DWARF tag");
3143 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3144 DwarfVirtualityField &Result) {
3145 if (Lex.getKind() == lltok::APSInt)
3146 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3148 if (Lex.getKind() != lltok::DwarfVirtuality)
3149 return TokError("expected DWARF virtuality code");
3151 unsigned Virtuality = dwarf::getVirtuality(Lex.getStrVal());
3153 return TokError("invalid DWARF virtuality code" + Twine(" '") +
3154 Lex.getStrVal() + "'");
3155 assert(Virtuality <= Result.Max && "Expected valid DWARF virtuality code");
3156 Result.assign(Virtuality);
3162 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfLangField &Result) {
3163 if (Lex.getKind() == lltok::APSInt)
3164 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3166 if (Lex.getKind() != lltok::DwarfLang)
3167 return TokError("expected DWARF language");
3169 unsigned Lang = dwarf::getLanguage(Lex.getStrVal());
3171 return TokError("invalid DWARF language" + Twine(" '") + Lex.getStrVal() +
3173 assert(Lang <= Result.Max && "Expected valid DWARF language");
3174 Result.assign(Lang);
3180 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3181 DwarfAttEncodingField &Result) {
3182 if (Lex.getKind() == lltok::APSInt)
3183 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3185 if (Lex.getKind() != lltok::DwarfAttEncoding)
3186 return TokError("expected DWARF type attribute encoding");
3188 unsigned Encoding = dwarf::getAttributeEncoding(Lex.getStrVal());
3190 return TokError("invalid DWARF type attribute encoding" + Twine(" '") +
3191 Lex.getStrVal() + "'");
3192 assert(Encoding <= Result.Max && "Expected valid DWARF language");
3193 Result.assign(Encoding);
3200 /// ::= DIFlagVector
3201 /// ::= DIFlagVector '|' DIFlagFwdDecl '|' uint32 '|' DIFlagPublic
3203 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DIFlagField &Result) {
3204 assert(Result.Max == UINT32_MAX && "Expected only 32-bits");
3206 // Parser for a single flag.
3207 auto parseFlag = [&](unsigned &Val) {
3208 if (Lex.getKind() == lltok::APSInt && !Lex.getAPSIntVal().isSigned())
3209 return ParseUInt32(Val);
3211 if (Lex.getKind() != lltok::DIFlag)
3212 return TokError("expected debug info flag");
3214 Val = DINode::getFlag(Lex.getStrVal());
3216 return TokError(Twine("invalid debug info flag flag '") +
3217 Lex.getStrVal() + "'");
3222 // Parse the flags and combine them together.
3223 unsigned Combined = 0;
3229 } while (EatIfPresent(lltok::bar));
3231 Result.assign(Combined);
3236 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3237 MDSignedField &Result) {
3238 if (Lex.getKind() != lltok::APSInt)
3239 return TokError("expected signed integer");
3241 auto &S = Lex.getAPSIntVal();
3243 return TokError("value for '" + Name + "' too small, limit is " +
3246 return TokError("value for '" + Name + "' too large, limit is " +
3248 Result.assign(S.getExtValue());
3249 assert(Result.Val >= Result.Min && "Expected value in range");
3250 assert(Result.Val <= Result.Max && "Expected value in range");
3256 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDBoolField &Result) {
3257 switch (Lex.getKind()) {
3259 return TokError("expected 'true' or 'false'");
3260 case lltok::kw_true:
3261 Result.assign(true);
3263 case lltok::kw_false:
3264 Result.assign(false);
3272 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDField &Result) {
3273 if (Lex.getKind() == lltok::kw_null) {
3274 if (!Result.AllowNull)
3275 return TokError("'" + Name + "' cannot be null");
3277 Result.assign(nullptr);
3282 if (ParseMetadata(MD, nullptr))
3290 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDConstant &Result) {
3292 if (ParseValueAsMetadata(MD, "expected constant", nullptr))
3295 Result.assign(cast<ConstantAsMetadata>(MD));
3300 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDStringField &Result) {
3301 LocTy ValueLoc = Lex.getLoc();
3303 if (ParseStringConstant(S))
3306 if (!Result.AllowEmpty && S.empty())
3307 return Error(ValueLoc, "'" + Name + "' cannot be empty");
3309 Result.assign(S.empty() ? nullptr : MDString::get(Context, S));
3314 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDFieldList &Result) {
3315 SmallVector<Metadata *, 4> MDs;
3316 if (ParseMDNodeVector(MDs))
3319 Result.assign(std::move(MDs));
3323 } // end namespace llvm
3325 template <class ParserTy>
3326 bool LLParser::ParseMDFieldsImplBody(ParserTy parseField) {
3328 if (Lex.getKind() != lltok::LabelStr)
3329 return TokError("expected field label here");
3333 } while (EatIfPresent(lltok::comma));
3338 template <class ParserTy>
3339 bool LLParser::ParseMDFieldsImpl(ParserTy parseField, LocTy &ClosingLoc) {
3340 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3343 if (ParseToken(lltok::lparen, "expected '(' here"))
3345 if (Lex.getKind() != lltok::rparen)
3346 if (ParseMDFieldsImplBody(parseField))
3349 ClosingLoc = Lex.getLoc();
3350 return ParseToken(lltok::rparen, "expected ')' here");
3353 template <class FieldTy>
3354 bool LLParser::ParseMDField(StringRef Name, FieldTy &Result) {
3356 return TokError("field '" + Name + "' cannot be specified more than once");
3358 LocTy Loc = Lex.getLoc();
3360 return ParseMDField(Loc, Name, Result);
3363 bool LLParser::ParseSpecializedMDNode(MDNode *&N, bool IsDistinct) {
3364 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3366 #define HANDLE_SPECIALIZED_MDNODE_LEAF(CLASS) \
3367 if (Lex.getStrVal() == #CLASS) \
3368 return Parse##CLASS(N, IsDistinct);
3369 #include "llvm/IR/Metadata.def"
3371 return TokError("expected metadata type");
3374 #define DECLARE_FIELD(NAME, TYPE, INIT) TYPE NAME INIT
3375 #define NOP_FIELD(NAME, TYPE, INIT)
3376 #define REQUIRE_FIELD(NAME, TYPE, INIT) \
3378 return Error(ClosingLoc, "missing required field '" #NAME "'");
3379 #define PARSE_MD_FIELD(NAME, TYPE, DEFAULT) \
3380 if (Lex.getStrVal() == #NAME) \
3381 return ParseMDField(#NAME, NAME);
3382 #define PARSE_MD_FIELDS() \
3383 VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) \
3386 if (ParseMDFieldsImpl([&]() -> bool { \
3387 VISIT_MD_FIELDS(PARSE_MD_FIELD, PARSE_MD_FIELD) \
3388 return TokError(Twine("invalid field '") + Lex.getStrVal() + "'"); \
3391 VISIT_MD_FIELDS(NOP_FIELD, REQUIRE_FIELD) \
3393 #define GET_OR_DISTINCT(CLASS, ARGS) \
3394 (IsDistinct ? CLASS::getDistinct ARGS : CLASS::get ARGS)
3396 /// ParseDILocationFields:
3397 /// ::= !DILocation(line: 43, column: 8, scope: !5, inlinedAt: !6)
3398 bool LLParser::ParseDILocation(MDNode *&Result, bool IsDistinct) {
3399 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3400 OPTIONAL(line, LineField, ); \
3401 OPTIONAL(column, ColumnField, ); \
3402 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3403 OPTIONAL(inlinedAt, MDField, );
3405 #undef VISIT_MD_FIELDS
3407 Result = GET_OR_DISTINCT(
3408 DILocation, (Context, line.Val, column.Val, scope.Val, inlinedAt.Val));
3412 /// ParseGenericDINode:
3413 /// ::= !GenericDINode(tag: 15, header: "...", operands: {...})
3414 bool LLParser::ParseGenericDINode(MDNode *&Result, bool IsDistinct) {
3415 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3416 REQUIRED(tag, DwarfTagField, ); \
3417 OPTIONAL(header, MDStringField, ); \
3418 OPTIONAL(operands, MDFieldList, );
3420 #undef VISIT_MD_FIELDS
3422 Result = GET_OR_DISTINCT(GenericDINode,
3423 (Context, tag.Val, header.Val, operands.Val));
3427 /// ParseDISubrange:
3428 /// ::= !DISubrange(count: 30, lowerBound: 2)
3429 bool LLParser::ParseDISubrange(MDNode *&Result, bool IsDistinct) {
3430 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3431 REQUIRED(count, MDSignedField, (-1, -1, INT64_MAX)); \
3432 OPTIONAL(lowerBound, MDSignedField, );
3434 #undef VISIT_MD_FIELDS
3436 Result = GET_OR_DISTINCT(DISubrange, (Context, count.Val, lowerBound.Val));
3440 /// ParseDIEnumerator:
3441 /// ::= !DIEnumerator(value: 30, name: "SomeKind")
3442 bool LLParser::ParseDIEnumerator(MDNode *&Result, bool IsDistinct) {
3443 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3444 REQUIRED(name, MDStringField, ); \
3445 REQUIRED(value, MDSignedField, );
3447 #undef VISIT_MD_FIELDS
3449 Result = GET_OR_DISTINCT(DIEnumerator, (Context, value.Val, name.Val));
3453 /// ParseDIBasicType:
3454 /// ::= !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32)
3455 bool LLParser::ParseDIBasicType(MDNode *&Result, bool IsDistinct) {
3456 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3457 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_base_type)); \
3458 OPTIONAL(name, MDStringField, ); \
3459 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3460 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3461 OPTIONAL(encoding, DwarfAttEncodingField, );
3463 #undef VISIT_MD_FIELDS
3465 Result = GET_OR_DISTINCT(DIBasicType, (Context, tag.Val, name.Val, size.Val,
3466 align.Val, encoding.Val));
3470 /// ParseDIDerivedType:
3471 /// ::= !DIDerivedType(tag: DW_TAG_pointer_type, name: "int", file: !0,
3472 /// line: 7, scope: !1, baseType: !2, size: 32,
3473 /// align: 32, offset: 0, flags: 0, extraData: !3)
3474 bool LLParser::ParseDIDerivedType(MDNode *&Result, bool IsDistinct) {
3475 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3476 REQUIRED(tag, DwarfTagField, ); \
3477 OPTIONAL(name, MDStringField, ); \
3478 OPTIONAL(file, MDField, ); \
3479 OPTIONAL(line, LineField, ); \
3480 OPTIONAL(scope, MDField, ); \
3481 REQUIRED(baseType, MDField, ); \
3482 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3483 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3484 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX)); \
3485 OPTIONAL(flags, DIFlagField, ); \
3486 OPTIONAL(extraData, MDField, );
3488 #undef VISIT_MD_FIELDS
3490 Result = GET_OR_DISTINCT(DIDerivedType,
3491 (Context, tag.Val, name.Val, file.Val, line.Val,
3492 scope.Val, baseType.Val, size.Val, align.Val,
3493 offset.Val, flags.Val, extraData.Val));
3497 bool LLParser::ParseDICompositeType(MDNode *&Result, bool IsDistinct) {
3498 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3499 REQUIRED(tag, DwarfTagField, ); \
3500 OPTIONAL(name, MDStringField, ); \
3501 OPTIONAL(file, MDField, ); \
3502 OPTIONAL(line, LineField, ); \
3503 OPTIONAL(scope, MDField, ); \
3504 OPTIONAL(baseType, MDField, ); \
3505 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3506 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3507 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX)); \
3508 OPTIONAL(flags, DIFlagField, ); \
3509 OPTIONAL(elements, MDField, ); \
3510 OPTIONAL(runtimeLang, DwarfLangField, ); \
3511 OPTIONAL(vtableHolder, MDField, ); \
3512 OPTIONAL(templateParams, MDField, ); \
3513 OPTIONAL(identifier, MDStringField, );
3515 #undef VISIT_MD_FIELDS
3517 Result = GET_OR_DISTINCT(
3519 (Context, tag.Val, name.Val, file.Val, line.Val, scope.Val, baseType.Val,
3520 size.Val, align.Val, offset.Val, flags.Val, elements.Val,
3521 runtimeLang.Val, vtableHolder.Val, templateParams.Val, identifier.Val));
3525 bool LLParser::ParseDISubroutineType(MDNode *&Result, bool IsDistinct) {
3526 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3527 OPTIONAL(flags, DIFlagField, ); \
3528 REQUIRED(types, MDField, );
3530 #undef VISIT_MD_FIELDS
3532 Result = GET_OR_DISTINCT(DISubroutineType, (Context, flags.Val, types.Val));
3536 /// ParseDIFileType:
3537 /// ::= !DIFileType(filename: "path/to/file", directory: "/path/to/dir")
3538 bool LLParser::ParseDIFile(MDNode *&Result, bool IsDistinct) {
3539 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3540 REQUIRED(filename, MDStringField, ); \
3541 REQUIRED(directory, MDStringField, );
3543 #undef VISIT_MD_FIELDS
3545 Result = GET_OR_DISTINCT(DIFile, (Context, filename.Val, directory.Val));
3549 /// ParseDICompileUnit:
3550 /// ::= !DICompileUnit(language: DW_LANG_C99, file: !0, producer: "clang",
3551 /// isOptimized: true, flags: "-O2", runtimeVersion: 1,
3552 /// splitDebugFilename: "abc.debug", emissionKind: 1,
3553 /// enums: !1, retainedTypes: !2, subprograms: !3,
3554 /// globals: !4, imports: !5, dwoId: 0x0abcd)
3555 bool LLParser::ParseDICompileUnit(MDNode *&Result, bool IsDistinct) {
3556 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3557 REQUIRED(language, DwarfLangField, ); \
3558 REQUIRED(file, MDField, (/* AllowNull */ false)); \
3559 OPTIONAL(producer, MDStringField, ); \
3560 OPTIONAL(isOptimized, MDBoolField, ); \
3561 OPTIONAL(flags, MDStringField, ); \
3562 OPTIONAL(runtimeVersion, MDUnsignedField, (0, UINT32_MAX)); \
3563 OPTIONAL(splitDebugFilename, MDStringField, ); \
3564 OPTIONAL(emissionKind, MDUnsignedField, (0, UINT32_MAX)); \
3565 OPTIONAL(enums, MDField, ); \
3566 OPTIONAL(retainedTypes, MDField, ); \
3567 OPTIONAL(subprograms, MDField, ); \
3568 OPTIONAL(globals, MDField, ); \
3569 OPTIONAL(imports, MDField, ); \
3570 OPTIONAL(dwoId, MDUnsignedField, );
3572 #undef VISIT_MD_FIELDS
3574 Result = GET_OR_DISTINCT(DICompileUnit,
3575 (Context, language.Val, file.Val, producer.Val,
3576 isOptimized.Val, flags.Val, runtimeVersion.Val,
3577 splitDebugFilename.Val, emissionKind.Val, enums.Val,
3578 retainedTypes.Val, subprograms.Val, globals.Val,
3579 imports.Val, dwoId.Val));
3583 /// ParseDISubprogram:
3584 /// ::= !DISubprogram(scope: !0, name: "foo", linkageName: "_Zfoo",
3585 /// file: !1, line: 7, type: !2, isLocal: false,
3586 /// isDefinition: true, scopeLine: 8, containingType: !3,
3587 /// virtuality: DW_VIRTUALTIY_pure_virtual,
3588 /// virtualIndex: 10, flags: 11,
3589 /// isOptimized: false, function: void ()* @_Z3foov,
3590 /// templateParams: !4, declaration: !5, variables: !6)
3591 bool LLParser::ParseDISubprogram(MDNode *&Result, bool IsDistinct) {
3592 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3593 OPTIONAL(scope, MDField, ); \
3594 OPTIONAL(name, MDStringField, ); \
3595 OPTIONAL(linkageName, MDStringField, ); \
3596 OPTIONAL(file, MDField, ); \
3597 OPTIONAL(line, LineField, ); \
3598 OPTIONAL(type, MDField, ); \
3599 OPTIONAL(isLocal, MDBoolField, ); \
3600 OPTIONAL(isDefinition, MDBoolField, (true)); \
3601 OPTIONAL(scopeLine, LineField, ); \
3602 OPTIONAL(containingType, MDField, ); \
3603 OPTIONAL(virtuality, DwarfVirtualityField, ); \
3604 OPTIONAL(virtualIndex, MDUnsignedField, (0, UINT32_MAX)); \
3605 OPTIONAL(flags, DIFlagField, ); \
3606 OPTIONAL(isOptimized, MDBoolField, ); \
3607 OPTIONAL(function, MDConstant, ); \
3608 OPTIONAL(templateParams, MDField, ); \
3609 OPTIONAL(declaration, MDField, ); \
3610 OPTIONAL(variables, MDField, );
3612 #undef VISIT_MD_FIELDS
3614 Result = GET_OR_DISTINCT(
3615 DISubprogram, (Context, scope.Val, name.Val, linkageName.Val, file.Val,
3616 line.Val, type.Val, isLocal.Val, isDefinition.Val,
3617 scopeLine.Val, containingType.Val, virtuality.Val,
3618 virtualIndex.Val, flags.Val, isOptimized.Val, function.Val,
3619 templateParams.Val, declaration.Val, variables.Val));
3623 /// ParseDILexicalBlock:
3624 /// ::= !DILexicalBlock(scope: !0, file: !2, line: 7, column: 9)
3625 bool LLParser::ParseDILexicalBlock(MDNode *&Result, bool IsDistinct) {
3626 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3627 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3628 OPTIONAL(file, MDField, ); \
3629 OPTIONAL(line, LineField, ); \
3630 OPTIONAL(column, ColumnField, );
3632 #undef VISIT_MD_FIELDS
3634 Result = GET_OR_DISTINCT(
3635 DILexicalBlock, (Context, scope.Val, file.Val, line.Val, column.Val));
3639 /// ParseDILexicalBlockFile:
3640 /// ::= !DILexicalBlockFile(scope: !0, file: !2, discriminator: 9)
3641 bool LLParser::ParseDILexicalBlockFile(MDNode *&Result, bool IsDistinct) {
3642 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3643 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3644 OPTIONAL(file, MDField, ); \
3645 REQUIRED(discriminator, MDUnsignedField, (0, UINT32_MAX));
3647 #undef VISIT_MD_FIELDS
3649 Result = GET_OR_DISTINCT(DILexicalBlockFile,
3650 (Context, scope.Val, file.Val, discriminator.Val));
3654 /// ParseDINamespace:
3655 /// ::= !DINamespace(scope: !0, file: !2, name: "SomeNamespace", line: 9)
3656 bool LLParser::ParseDINamespace(MDNode *&Result, bool IsDistinct) {
3657 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3658 REQUIRED(scope, MDField, ); \
3659 OPTIONAL(file, MDField, ); \
3660 OPTIONAL(name, MDStringField, ); \
3661 OPTIONAL(line, LineField, );
3663 #undef VISIT_MD_FIELDS
3665 Result = GET_OR_DISTINCT(DINamespace,
3666 (Context, scope.Val, file.Val, name.Val, line.Val));
3670 /// ParseDITemplateTypeParameter:
3671 /// ::= !DITemplateTypeParameter(name: "Ty", type: !1)
3672 bool LLParser::ParseDITemplateTypeParameter(MDNode *&Result, bool IsDistinct) {
3673 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3674 OPTIONAL(name, MDStringField, ); \
3675 REQUIRED(type, MDField, );
3677 #undef VISIT_MD_FIELDS
3680 GET_OR_DISTINCT(DITemplateTypeParameter, (Context, name.Val, type.Val));
3684 /// ParseDITemplateValueParameter:
3685 /// ::= !DITemplateValueParameter(tag: DW_TAG_template_value_parameter,
3686 /// name: "V", type: !1, value: i32 7)
3687 bool LLParser::ParseDITemplateValueParameter(MDNode *&Result, bool IsDistinct) {
3688 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3689 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_template_value_parameter)); \
3690 OPTIONAL(name, MDStringField, ); \
3691 OPTIONAL(type, MDField, ); \
3692 REQUIRED(value, MDField, );
3694 #undef VISIT_MD_FIELDS
3696 Result = GET_OR_DISTINCT(DITemplateValueParameter,
3697 (Context, tag.Val, name.Val, type.Val, value.Val));
3701 /// ParseDIGlobalVariable:
3702 /// ::= !DIGlobalVariable(scope: !0, name: "foo", linkageName: "foo",
3703 /// file: !1, line: 7, type: !2, isLocal: false,
3704 /// isDefinition: true, variable: i32* @foo,
3705 /// declaration: !3)
3706 bool LLParser::ParseDIGlobalVariable(MDNode *&Result, bool IsDistinct) {
3707 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3708 REQUIRED(name, MDStringField, (/* AllowEmpty */ false)); \
3709 OPTIONAL(scope, MDField, ); \
3710 OPTIONAL(linkageName, MDStringField, ); \
3711 OPTIONAL(file, MDField, ); \
3712 OPTIONAL(line, LineField, ); \
3713 OPTIONAL(type, MDField, ); \
3714 OPTIONAL(isLocal, MDBoolField, ); \
3715 OPTIONAL(isDefinition, MDBoolField, (true)); \
3716 OPTIONAL(variable, MDConstant, ); \
3717 OPTIONAL(declaration, MDField, );
3719 #undef VISIT_MD_FIELDS
3721 Result = GET_OR_DISTINCT(DIGlobalVariable,
3722 (Context, scope.Val, name.Val, linkageName.Val,
3723 file.Val, line.Val, type.Val, isLocal.Val,
3724 isDefinition.Val, variable.Val, declaration.Val));
3728 /// ParseDILocalVariable:
3729 /// ::= !DILocalVariable(tag: DW_TAG_arg_variable, scope: !0, name: "foo",
3730 /// file: !1, line: 7, type: !2, arg: 2, flags: 7)
3731 bool LLParser::ParseDILocalVariable(MDNode *&Result, bool IsDistinct) {
3732 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3733 REQUIRED(tag, DwarfTagField, ); \
3734 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3735 OPTIONAL(name, MDStringField, ); \
3736 OPTIONAL(file, MDField, ); \
3737 OPTIONAL(line, LineField, ); \
3738 OPTIONAL(type, MDField, ); \
3739 OPTIONAL(arg, MDUnsignedField, (0, UINT16_MAX)); \
3740 OPTIONAL(flags, DIFlagField, );
3742 #undef VISIT_MD_FIELDS
3744 Result = GET_OR_DISTINCT(DILocalVariable,
3745 (Context, tag.Val, scope.Val, name.Val, file.Val,
3746 line.Val, type.Val, arg.Val, flags.Val));
3750 /// ParseDIExpression:
3751 /// ::= !DIExpression(0, 7, -1)
3752 bool LLParser::ParseDIExpression(MDNode *&Result, bool IsDistinct) {
3753 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3756 if (ParseToken(lltok::lparen, "expected '(' here"))
3759 SmallVector<uint64_t, 8> Elements;
3760 if (Lex.getKind() != lltok::rparen)
3762 if (Lex.getKind() == lltok::DwarfOp) {
3763 if (unsigned Op = dwarf::getOperationEncoding(Lex.getStrVal())) {
3765 Elements.push_back(Op);
3768 return TokError(Twine("invalid DWARF op '") + Lex.getStrVal() + "'");
3771 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
3772 return TokError("expected unsigned integer");
3774 auto &U = Lex.getAPSIntVal();
3775 if (U.ugt(UINT64_MAX))
3776 return TokError("element too large, limit is " + Twine(UINT64_MAX));
3777 Elements.push_back(U.getZExtValue());
3779 } while (EatIfPresent(lltok::comma));
3781 if (ParseToken(lltok::rparen, "expected ')' here"))
3784 Result = GET_OR_DISTINCT(DIExpression, (Context, Elements));
3788 /// ParseDIObjCProperty:
3789 /// ::= !DIObjCProperty(name: "foo", file: !1, line: 7, setter: "setFoo",
3790 /// getter: "getFoo", attributes: 7, type: !2)
3791 bool LLParser::ParseDIObjCProperty(MDNode *&Result, bool IsDistinct) {
3792 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3793 OPTIONAL(name, MDStringField, ); \
3794 OPTIONAL(file, MDField, ); \
3795 OPTIONAL(line, LineField, ); \
3796 OPTIONAL(setter, MDStringField, ); \
3797 OPTIONAL(getter, MDStringField, ); \
3798 OPTIONAL(attributes, MDUnsignedField, (0, UINT32_MAX)); \
3799 OPTIONAL(type, MDField, );
3801 #undef VISIT_MD_FIELDS
3803 Result = GET_OR_DISTINCT(DIObjCProperty,
3804 (Context, name.Val, file.Val, line.Val, setter.Val,
3805 getter.Val, attributes.Val, type.Val));
3809 /// ParseDIImportedEntity:
3810 /// ::= !DIImportedEntity(tag: DW_TAG_imported_module, scope: !0, entity: !1,
3811 /// line: 7, name: "foo")
3812 bool LLParser::ParseDIImportedEntity(MDNode *&Result, bool IsDistinct) {
3813 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3814 REQUIRED(tag, DwarfTagField, ); \
3815 REQUIRED(scope, MDField, ); \
3816 OPTIONAL(entity, MDField, ); \
3817 OPTIONAL(line, LineField, ); \
3818 OPTIONAL(name, MDStringField, );
3820 #undef VISIT_MD_FIELDS
3822 Result = GET_OR_DISTINCT(DIImportedEntity, (Context, tag.Val, scope.Val,
3823 entity.Val, line.Val, name.Val));
3827 #undef PARSE_MD_FIELD
3829 #undef REQUIRE_FIELD
3830 #undef DECLARE_FIELD
3832 /// ParseMetadataAsValue
3833 /// ::= metadata i32 %local
3834 /// ::= metadata i32 @global
3835 /// ::= metadata i32 7
3837 /// ::= metadata !{...}
3838 /// ::= metadata !"string"
3839 bool LLParser::ParseMetadataAsValue(Value *&V, PerFunctionState &PFS) {
3840 // Note: the type 'metadata' has already been parsed.
3842 if (ParseMetadata(MD, &PFS))
3845 V = MetadataAsValue::get(Context, MD);
3849 /// ParseValueAsMetadata
3853 bool LLParser::ParseValueAsMetadata(Metadata *&MD, const Twine &TypeMsg,
3854 PerFunctionState *PFS) {
3857 if (ParseType(Ty, TypeMsg, Loc))
3859 if (Ty->isMetadataTy())
3860 return Error(Loc, "invalid metadata-value-metadata roundtrip");
3863 if (ParseValue(Ty, V, PFS))
3866 MD = ValueAsMetadata::get(V);
3877 /// ::= !DILocation(...)
3878 bool LLParser::ParseMetadata(Metadata *&MD, PerFunctionState *PFS) {
3879 if (Lex.getKind() == lltok::MetadataVar) {
3881 if (ParseSpecializedMDNode(N))
3889 if (Lex.getKind() != lltok::exclaim)
3890 return ParseValueAsMetadata(MD, "expected metadata operand", PFS);
3893 assert(Lex.getKind() == lltok::exclaim && "Expected '!' here");
3897 // ::= '!' STRINGCONSTANT
3898 if (Lex.getKind() == lltok::StringConstant) {
3900 if (ParseMDString(S))
3910 if (ParseMDNodeTail(N))
3917 //===----------------------------------------------------------------------===//
3918 // Function Parsing.
3919 //===----------------------------------------------------------------------===//
3921 bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
3922 PerFunctionState *PFS) {
3923 if (Ty->isFunctionTy())
3924 return Error(ID.Loc, "functions are not values, refer to them as pointers");
3927 case ValID::t_LocalID:
3928 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
3929 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
3930 return V == nullptr;
3931 case ValID::t_LocalName:
3932 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
3933 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
3934 return V == nullptr;
3935 case ValID::t_InlineAsm: {
3936 PointerType *PTy = dyn_cast<PointerType>(Ty);
3938 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : nullptr;
3939 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
3940 return Error(ID.Loc, "invalid type for inline asm constraint string");
3941 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1,
3942 (ID.UIntVal>>1)&1, (InlineAsm::AsmDialect(ID.UIntVal>>2)));
3945 case ValID::t_GlobalName:
3946 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
3947 return V == nullptr;
3948 case ValID::t_GlobalID:
3949 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
3950 return V == nullptr;
3951 case ValID::t_APSInt:
3952 if (!Ty->isIntegerTy())
3953 return Error(ID.Loc, "integer constant must have integer type");
3954 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
3955 V = ConstantInt::get(Context, ID.APSIntVal);
3957 case ValID::t_APFloat:
3958 if (!Ty->isFloatingPointTy() ||
3959 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
3960 return Error(ID.Loc, "floating point constant invalid for type");
3962 // The lexer has no type info, so builds all half, float, and double FP
3963 // constants as double. Fix this here. Long double does not need this.
3964 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble) {
3967 ID.APFloatVal.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven,
3969 else if (Ty->isFloatTy())
3970 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
3973 V = ConstantFP::get(Context, ID.APFloatVal);
3975 if (V->getType() != Ty)
3976 return Error(ID.Loc, "floating point constant does not have type '" +
3977 getTypeString(Ty) + "'");
3981 if (!Ty->isPointerTy())
3982 return Error(ID.Loc, "null must be a pointer type");
3983 V = ConstantPointerNull::get(cast<PointerType>(Ty));
3985 case ValID::t_Undef:
3986 // FIXME: LabelTy should not be a first-class type.
3987 if (!Ty->isFirstClassType() || Ty->isLabelTy())
3988 return Error(ID.Loc, "invalid type for undef constant");
3989 V = UndefValue::get(Ty);
3991 case ValID::t_EmptyArray:
3992 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
3993 return Error(ID.Loc, "invalid empty array initializer");
3994 V = UndefValue::get(Ty);
3997 // FIXME: LabelTy should not be a first-class type.
3998 if (!Ty->isFirstClassType() || Ty->isLabelTy())
3999 return Error(ID.Loc, "invalid type for null constant");
4000 V = Constant::getNullValue(Ty);
4002 case ValID::t_Constant:
4003 if (ID.ConstantVal->getType() != Ty)
4004 return Error(ID.Loc, "constant expression type mismatch");
4008 case ValID::t_ConstantStruct:
4009 case ValID::t_PackedConstantStruct:
4010 if (StructType *ST = dyn_cast<StructType>(Ty)) {
4011 if (ST->getNumElements() != ID.UIntVal)
4012 return Error(ID.Loc,
4013 "initializer with struct type has wrong # elements");
4014 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
4015 return Error(ID.Loc, "packed'ness of initializer and type don't match");
4017 // Verify that the elements are compatible with the structtype.
4018 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
4019 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
4020 return Error(ID.Loc, "element " + Twine(i) +
4021 " of struct initializer doesn't match struct element type");
4023 V = ConstantStruct::get(ST, makeArrayRef(ID.ConstantStructElts,
4026 return Error(ID.Loc, "constant expression type mismatch");
4029 llvm_unreachable("Invalid ValID");
4032 bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS) {
4035 return ParseValID(ID, PFS) ||
4036 ConvertValIDToValue(Ty, ID, V, PFS);
4039 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
4041 return ParseType(Ty) ||
4042 ParseValue(Ty, V, PFS);
4045 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
4046 PerFunctionState &PFS) {
4049 if (ParseTypeAndValue(V, PFS)) return true;
4050 if (!isa<BasicBlock>(V))
4051 return Error(Loc, "expected a basic block");
4052 BB = cast<BasicBlock>(V);
4058 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
4059 /// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
4060 /// OptionalAlign OptGC OptionalPrefix OptionalPrologue
4061 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
4062 // Parse the linkage.
4063 LocTy LinkageLoc = Lex.getLoc();
4066 unsigned Visibility;
4067 unsigned DLLStorageClass;
4068 AttrBuilder RetAttrs;
4070 Type *RetType = nullptr;
4071 LocTy RetTypeLoc = Lex.getLoc();
4072 if (ParseOptionalLinkage(Linkage) ||
4073 ParseOptionalVisibility(Visibility) ||
4074 ParseOptionalDLLStorageClass(DLLStorageClass) ||
4075 ParseOptionalCallingConv(CC) ||
4076 ParseOptionalReturnAttrs(RetAttrs) ||
4077 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
4080 // Verify that the linkage is ok.
4081 switch ((GlobalValue::LinkageTypes)Linkage) {
4082 case GlobalValue::ExternalLinkage:
4083 break; // always ok.
4084 case GlobalValue::ExternalWeakLinkage:
4086 return Error(LinkageLoc, "invalid linkage for function definition");
4088 case GlobalValue::PrivateLinkage:
4089 case GlobalValue::InternalLinkage:
4090 case GlobalValue::AvailableExternallyLinkage:
4091 case GlobalValue::LinkOnceAnyLinkage:
4092 case GlobalValue::LinkOnceODRLinkage:
4093 case GlobalValue::WeakAnyLinkage:
4094 case GlobalValue::WeakODRLinkage:
4096 return Error(LinkageLoc, "invalid linkage for function declaration");
4098 case GlobalValue::AppendingLinkage:
4099 case GlobalValue::CommonLinkage:
4100 return Error(LinkageLoc, "invalid function linkage type");
4103 if (!isValidVisibilityForLinkage(Visibility, Linkage))
4104 return Error(LinkageLoc,
4105 "symbol with local linkage must have default visibility");
4107 if (!FunctionType::isValidReturnType(RetType))
4108 return Error(RetTypeLoc, "invalid function return type");
4110 LocTy NameLoc = Lex.getLoc();
4112 std::string FunctionName;
4113 if (Lex.getKind() == lltok::GlobalVar) {
4114 FunctionName = Lex.getStrVal();
4115 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
4116 unsigned NameID = Lex.getUIntVal();
4118 if (NameID != NumberedVals.size())
4119 return TokError("function expected to be numbered '%" +
4120 Twine(NumberedVals.size()) + "'");
4122 return TokError("expected function name");
4127 if (Lex.getKind() != lltok::lparen)
4128 return TokError("expected '(' in function argument list");
4130 SmallVector<ArgInfo, 8> ArgList;
4132 AttrBuilder FuncAttrs;
4133 std::vector<unsigned> FwdRefAttrGrps;
4135 std::string Section;
4139 LocTy UnnamedAddrLoc;
4140 Constant *Prefix = nullptr;
4141 Constant *Prologue = nullptr;
4144 if (ParseArgumentList(ArgList, isVarArg) ||
4145 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
4147 ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false,
4149 (EatIfPresent(lltok::kw_section) &&
4150 ParseStringConstant(Section)) ||
4151 parseOptionalComdat(FunctionName, C) ||
4152 ParseOptionalAlignment(Alignment) ||
4153 (EatIfPresent(lltok::kw_gc) &&
4154 ParseStringConstant(GC)) ||
4155 (EatIfPresent(lltok::kw_prefix) &&
4156 ParseGlobalTypeAndValue(Prefix)) ||
4157 (EatIfPresent(lltok::kw_prologue) &&
4158 ParseGlobalTypeAndValue(Prologue)))
4161 if (FuncAttrs.contains(Attribute::Builtin))
4162 return Error(BuiltinLoc, "'builtin' attribute not valid on function");
4164 // If the alignment was parsed as an attribute, move to the alignment field.
4165 if (FuncAttrs.hasAlignmentAttr()) {
4166 Alignment = FuncAttrs.getAlignment();
4167 FuncAttrs.removeAttribute(Attribute::Alignment);
4170 // Okay, if we got here, the function is syntactically valid. Convert types
4171 // and do semantic checks.
4172 std::vector<Type*> ParamTypeList;
4173 SmallVector<AttributeSet, 8> Attrs;
4175 if (RetAttrs.hasAttributes())
4176 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4177 AttributeSet::ReturnIndex,
4180 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
4181 ParamTypeList.push_back(ArgList[i].Ty);
4182 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
4183 AttrBuilder B(ArgList[i].Attrs, i + 1);
4184 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
4188 if (FuncAttrs.hasAttributes())
4189 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4190 AttributeSet::FunctionIndex,
4193 AttributeSet PAL = AttributeSet::get(Context, Attrs);
4195 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
4196 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
4199 FunctionType::get(RetType, ParamTypeList, isVarArg);
4200 PointerType *PFT = PointerType::getUnqual(FT);
4203 if (!FunctionName.empty()) {
4204 // If this was a definition of a forward reference, remove the definition
4205 // from the forward reference table and fill in the forward ref.
4206 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
4207 ForwardRefVals.find(FunctionName);
4208 if (FRVI != ForwardRefVals.end()) {
4209 Fn = M->getFunction(FunctionName);
4211 return Error(FRVI->second.second, "invalid forward reference to "
4212 "function as global value!");
4213 if (Fn->getType() != PFT)
4214 return Error(FRVI->second.second, "invalid forward reference to "
4215 "function '" + FunctionName + "' with wrong type!");
4217 ForwardRefVals.erase(FRVI);
4218 } else if ((Fn = M->getFunction(FunctionName))) {
4219 // Reject redefinitions.
4220 return Error(NameLoc, "invalid redefinition of function '" +
4221 FunctionName + "'");
4222 } else if (M->getNamedValue(FunctionName)) {
4223 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
4227 // If this is a definition of a forward referenced function, make sure the
4229 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
4230 = ForwardRefValIDs.find(NumberedVals.size());
4231 if (I != ForwardRefValIDs.end()) {
4232 Fn = cast<Function>(I->second.first);
4233 if (Fn->getType() != PFT)
4234 return Error(NameLoc, "type of definition and forward reference of '@" +
4235 Twine(NumberedVals.size()) + "' disagree");
4236 ForwardRefValIDs.erase(I);
4241 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
4242 else // Move the forward-reference to the correct spot in the module.
4243 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
4245 if (FunctionName.empty())
4246 NumberedVals.push_back(Fn);
4248 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
4249 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
4250 Fn->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
4251 Fn->setCallingConv(CC);
4252 Fn->setAttributes(PAL);
4253 Fn->setUnnamedAddr(UnnamedAddr);
4254 Fn->setAlignment(Alignment);
4255 Fn->setSection(Section);
4257 if (!GC.empty()) Fn->setGC(GC.c_str());
4258 Fn->setPrefixData(Prefix);
4259 Fn->setPrologueData(Prologue);
4260 ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
4262 // Add all of the arguments we parsed to the function.
4263 Function::arg_iterator ArgIt = Fn->arg_begin();
4264 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
4265 // If the argument has a name, insert it into the argument symbol table.
4266 if (ArgList[i].Name.empty()) continue;
4268 // Set the name, if it conflicted, it will be auto-renamed.
4269 ArgIt->setName(ArgList[i].Name);
4271 if (ArgIt->getName() != ArgList[i].Name)
4272 return Error(ArgList[i].Loc, "redefinition of argument '%" +
4273 ArgList[i].Name + "'");
4279 // Check the declaration has no block address forward references.
4281 if (FunctionName.empty()) {
4282 ID.Kind = ValID::t_GlobalID;
4283 ID.UIntVal = NumberedVals.size() - 1;
4285 ID.Kind = ValID::t_GlobalName;
4286 ID.StrVal = FunctionName;
4288 auto Blocks = ForwardRefBlockAddresses.find(ID);
4289 if (Blocks != ForwardRefBlockAddresses.end())
4290 return Error(Blocks->first.Loc,
4291 "cannot take blockaddress inside a declaration");
4295 bool LLParser::PerFunctionState::resolveForwardRefBlockAddresses() {
4297 if (FunctionNumber == -1) {
4298 ID.Kind = ValID::t_GlobalName;
4299 ID.StrVal = F.getName();
4301 ID.Kind = ValID::t_GlobalID;
4302 ID.UIntVal = FunctionNumber;
4305 auto Blocks = P.ForwardRefBlockAddresses.find(ID);
4306 if (Blocks == P.ForwardRefBlockAddresses.end())
4309 for (const auto &I : Blocks->second) {
4310 const ValID &BBID = I.first;
4311 GlobalValue *GV = I.second;
4313 assert((BBID.Kind == ValID::t_LocalID || BBID.Kind == ValID::t_LocalName) &&
4314 "Expected local id or name");
4316 if (BBID.Kind == ValID::t_LocalName)
4317 BB = GetBB(BBID.StrVal, BBID.Loc);
4319 BB = GetBB(BBID.UIntVal, BBID.Loc);
4321 return P.Error(BBID.Loc, "referenced value is not a basic block");
4323 GV->replaceAllUsesWith(BlockAddress::get(&F, BB));
4324 GV->eraseFromParent();
4327 P.ForwardRefBlockAddresses.erase(Blocks);
4331 /// ParseFunctionBody
4332 /// ::= '{' BasicBlock+ UseListOrderDirective* '}'
4333 bool LLParser::ParseFunctionBody(Function &Fn) {
4334 if (Lex.getKind() != lltok::lbrace)
4335 return TokError("expected '{' in function body");
4336 Lex.Lex(); // eat the {.
4338 int FunctionNumber = -1;
4339 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
4341 PerFunctionState PFS(*this, Fn, FunctionNumber);
4343 // Resolve block addresses and allow basic blocks to be forward-declared
4344 // within this function.
4345 if (PFS.resolveForwardRefBlockAddresses())
4347 SaveAndRestore<PerFunctionState *> ScopeExit(BlockAddressPFS, &PFS);
4349 // We need at least one basic block.
4350 if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_uselistorder)
4351 return TokError("function body requires at least one basic block");
4353 while (Lex.getKind() != lltok::rbrace &&
4354 Lex.getKind() != lltok::kw_uselistorder)
4355 if (ParseBasicBlock(PFS)) return true;
4357 while (Lex.getKind() != lltok::rbrace)
4358 if (ParseUseListOrder(&PFS))
4364 // Verify function is ok.
4365 return PFS.FinishFunction();
4369 /// ::= LabelStr? Instruction*
4370 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
4371 // If this basic block starts out with a name, remember it.
4373 LocTy NameLoc = Lex.getLoc();
4374 if (Lex.getKind() == lltok::LabelStr) {
4375 Name = Lex.getStrVal();
4379 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
4381 return Error(NameLoc,
4382 "unable to create block named '" + Name + "'");
4384 std::string NameStr;
4386 // Parse the instructions in this block until we get a terminator.
4389 // This instruction may have three possibilities for a name: a) none
4390 // specified, b) name specified "%foo =", c) number specified: "%4 =".
4391 LocTy NameLoc = Lex.getLoc();
4395 if (Lex.getKind() == lltok::LocalVarID) {
4396 NameID = Lex.getUIntVal();
4398 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
4400 } else if (Lex.getKind() == lltok::LocalVar) {
4401 NameStr = Lex.getStrVal();
4403 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
4407 switch (ParseInstruction(Inst, BB, PFS)) {
4408 default: llvm_unreachable("Unknown ParseInstruction result!");
4409 case InstError: return true;
4411 BB->getInstList().push_back(Inst);
4413 // With a normal result, we check to see if the instruction is followed by
4414 // a comma and metadata.
4415 if (EatIfPresent(lltok::comma))
4416 if (ParseInstructionMetadata(*Inst))
4419 case InstExtraComma:
4420 BB->getInstList().push_back(Inst);
4422 // If the instruction parser ate an extra comma at the end of it, it
4423 // *must* be followed by metadata.
4424 if (ParseInstructionMetadata(*Inst))
4429 // Set the name on the instruction.
4430 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
4431 } while (!isa<TerminatorInst>(Inst));
4436 //===----------------------------------------------------------------------===//
4437 // Instruction Parsing.
4438 //===----------------------------------------------------------------------===//
4440 /// ParseInstruction - Parse one of the many different instructions.
4442 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
4443 PerFunctionState &PFS) {
4444 lltok::Kind Token = Lex.getKind();
4445 if (Token == lltok::Eof)
4446 return TokError("found end of file when expecting more instructions");
4447 LocTy Loc = Lex.getLoc();
4448 unsigned KeywordVal = Lex.getUIntVal();
4449 Lex.Lex(); // Eat the keyword.
4452 default: return Error(Loc, "expected instruction opcode");
4453 // Terminator Instructions.
4454 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
4455 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
4456 case lltok::kw_br: return ParseBr(Inst, PFS);
4457 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
4458 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
4459 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
4460 case lltok::kw_resume: return ParseResume(Inst, PFS);
4461 // Binary Operators.
4465 case lltok::kw_shl: {
4466 bool NUW = EatIfPresent(lltok::kw_nuw);
4467 bool NSW = EatIfPresent(lltok::kw_nsw);
4468 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
4470 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
4472 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
4473 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
4476 case lltok::kw_fadd:
4477 case lltok::kw_fsub:
4478 case lltok::kw_fmul:
4479 case lltok::kw_fdiv:
4480 case lltok::kw_frem: {
4481 FastMathFlags FMF = EatFastMathFlagsIfPresent();
4482 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
4486 Inst->setFastMathFlags(FMF);
4490 case lltok::kw_sdiv:
4491 case lltok::kw_udiv:
4492 case lltok::kw_lshr:
4493 case lltok::kw_ashr: {
4494 bool Exact = EatIfPresent(lltok::kw_exact);
4496 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
4497 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
4501 case lltok::kw_urem:
4502 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
4505 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
4506 case lltok::kw_icmp:
4507 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
4509 case lltok::kw_trunc:
4510 case lltok::kw_zext:
4511 case lltok::kw_sext:
4512 case lltok::kw_fptrunc:
4513 case lltok::kw_fpext:
4514 case lltok::kw_bitcast:
4515 case lltok::kw_addrspacecast:
4516 case lltok::kw_uitofp:
4517 case lltok::kw_sitofp:
4518 case lltok::kw_fptoui:
4519 case lltok::kw_fptosi:
4520 case lltok::kw_inttoptr:
4521 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
4523 case lltok::kw_select: return ParseSelect(Inst, PFS);
4524 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
4525 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
4526 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
4527 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
4528 case lltok::kw_phi: return ParsePHI(Inst, PFS);
4529 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
4531 case lltok::kw_call: return ParseCall(Inst, PFS, CallInst::TCK_None);
4532 case lltok::kw_tail: return ParseCall(Inst, PFS, CallInst::TCK_Tail);
4533 case lltok::kw_musttail: return ParseCall(Inst, PFS, CallInst::TCK_MustTail);
4535 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
4536 case lltok::kw_load: return ParseLoad(Inst, PFS);
4537 case lltok::kw_store: return ParseStore(Inst, PFS);
4538 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
4539 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
4540 case lltok::kw_fence: return ParseFence(Inst, PFS);
4541 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
4542 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
4543 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
4547 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
4548 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
4549 if (Opc == Instruction::FCmp) {
4550 switch (Lex.getKind()) {
4551 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
4552 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
4553 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
4554 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
4555 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
4556 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
4557 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
4558 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
4559 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
4560 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
4561 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
4562 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
4563 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
4564 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
4565 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
4566 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
4567 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
4570 switch (Lex.getKind()) {
4571 default: return TokError("expected icmp predicate (e.g. 'eq')");
4572 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
4573 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
4574 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
4575 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
4576 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
4577 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
4578 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
4579 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
4580 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
4581 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
4588 //===----------------------------------------------------------------------===//
4589 // Terminator Instructions.
4590 //===----------------------------------------------------------------------===//
4592 /// ParseRet - Parse a return instruction.
4593 /// ::= 'ret' void (',' !dbg, !1)*
4594 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
4595 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
4596 PerFunctionState &PFS) {
4597 SMLoc TypeLoc = Lex.getLoc();
4599 if (ParseType(Ty, true /*void allowed*/)) return true;
4601 Type *ResType = PFS.getFunction().getReturnType();
4603 if (Ty->isVoidTy()) {
4604 if (!ResType->isVoidTy())
4605 return Error(TypeLoc, "value doesn't match function result type '" +
4606 getTypeString(ResType) + "'");
4608 Inst = ReturnInst::Create(Context);
4613 if (ParseValue(Ty, RV, PFS)) return true;
4615 if (ResType != RV->getType())
4616 return Error(TypeLoc, "value doesn't match function result type '" +
4617 getTypeString(ResType) + "'");
4619 Inst = ReturnInst::Create(Context, RV);
4625 /// ::= 'br' TypeAndValue
4626 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
4627 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
4630 BasicBlock *Op1, *Op2;
4631 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
4633 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
4634 Inst = BranchInst::Create(BB);
4638 if (Op0->getType() != Type::getInt1Ty(Context))
4639 return Error(Loc, "branch condition must have 'i1' type");
4641 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
4642 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
4643 ParseToken(lltok::comma, "expected ',' after true destination") ||
4644 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
4647 Inst = BranchInst::Create(Op1, Op2, Op0);
4653 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
4655 /// ::= (TypeAndValue ',' TypeAndValue)*
4656 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
4657 LocTy CondLoc, BBLoc;
4659 BasicBlock *DefaultBB;
4660 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
4661 ParseToken(lltok::comma, "expected ',' after switch condition") ||
4662 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
4663 ParseToken(lltok::lsquare, "expected '[' with switch table"))
4666 if (!Cond->getType()->isIntegerTy())
4667 return Error(CondLoc, "switch condition must have integer type");
4669 // Parse the jump table pairs.
4670 SmallPtrSet<Value*, 32> SeenCases;
4671 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
4672 while (Lex.getKind() != lltok::rsquare) {
4676 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
4677 ParseToken(lltok::comma, "expected ',' after case value") ||
4678 ParseTypeAndBasicBlock(DestBB, PFS))
4681 if (!SeenCases.insert(Constant).second)
4682 return Error(CondLoc, "duplicate case value in switch");
4683 if (!isa<ConstantInt>(Constant))
4684 return Error(CondLoc, "case value is not a constant integer");
4686 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
4689 Lex.Lex(); // Eat the ']'.
4691 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
4692 for (unsigned i = 0, e = Table.size(); i != e; ++i)
4693 SI->addCase(Table[i].first, Table[i].second);
4700 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
4701 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
4704 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
4705 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
4706 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
4709 if (!Address->getType()->isPointerTy())
4710 return Error(AddrLoc, "indirectbr address must have pointer type");
4712 // Parse the destination list.
4713 SmallVector<BasicBlock*, 16> DestList;
4715 if (Lex.getKind() != lltok::rsquare) {
4717 if (ParseTypeAndBasicBlock(DestBB, PFS))
4719 DestList.push_back(DestBB);
4721 while (EatIfPresent(lltok::comma)) {
4722 if (ParseTypeAndBasicBlock(DestBB, PFS))
4724 DestList.push_back(DestBB);
4728 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
4731 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
4732 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
4733 IBI->addDestination(DestList[i]);
4740 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
4741 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
4742 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
4743 LocTy CallLoc = Lex.getLoc();
4744 AttrBuilder RetAttrs, FnAttrs;
4745 std::vector<unsigned> FwdRefAttrGrps;
4748 Type *RetType = nullptr;
4751 SmallVector<ParamInfo, 16> ArgList;
4753 BasicBlock *NormalBB, *UnwindBB;
4754 if (ParseOptionalCallingConv(CC) ||
4755 ParseOptionalReturnAttrs(RetAttrs) ||
4756 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
4757 ParseValID(CalleeID) ||
4758 ParseParameterList(ArgList, PFS) ||
4759 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
4761 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
4762 ParseTypeAndBasicBlock(NormalBB, PFS) ||
4763 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
4764 ParseTypeAndBasicBlock(UnwindBB, PFS))
4767 // If RetType is a non-function pointer type, then this is the short syntax
4768 // for the call, which means that RetType is just the return type. Infer the
4769 // rest of the function argument types from the arguments that are present.
4770 FunctionType *Ty = dyn_cast<FunctionType>(RetType);
4772 // Pull out the types of all of the arguments...
4773 std::vector<Type*> ParamTypes;
4774 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
4775 ParamTypes.push_back(ArgList[i].V->getType());
4777 if (!FunctionType::isValidReturnType(RetType))
4778 return Error(RetTypeLoc, "Invalid result type for LLVM function");
4780 Ty = FunctionType::get(RetType, ParamTypes, false);
4783 // Look up the callee.
4785 if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS))
4788 // Set up the Attribute for the function.
4789 SmallVector<AttributeSet, 8> Attrs;
4790 if (RetAttrs.hasAttributes())
4791 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4792 AttributeSet::ReturnIndex,
4795 SmallVector<Value*, 8> Args;
4797 // Loop through FunctionType's arguments and ensure they are specified
4798 // correctly. Also, gather any parameter attributes.
4799 FunctionType::param_iterator I = Ty->param_begin();
4800 FunctionType::param_iterator E = Ty->param_end();
4801 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
4802 Type *ExpectedTy = nullptr;
4805 } else if (!Ty->isVarArg()) {
4806 return Error(ArgList[i].Loc, "too many arguments specified");
4809 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
4810 return Error(ArgList[i].Loc, "argument is not of expected type '" +
4811 getTypeString(ExpectedTy) + "'");
4812 Args.push_back(ArgList[i].V);
4813 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
4814 AttrBuilder B(ArgList[i].Attrs, i + 1);
4815 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
4820 return Error(CallLoc, "not enough parameters specified for call");
4822 if (FnAttrs.hasAttributes()) {
4823 if (FnAttrs.hasAlignmentAttr())
4824 return Error(CallLoc, "invoke instructions may not have an alignment");
4826 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4827 AttributeSet::FunctionIndex,
4831 // Finish off the Attribute and check them
4832 AttributeSet PAL = AttributeSet::get(Context, Attrs);
4834 InvokeInst *II = InvokeInst::Create(Ty, Callee, NormalBB, UnwindBB, Args);
4835 II->setCallingConv(CC);
4836 II->setAttributes(PAL);
4837 ForwardRefAttrGroups[II] = FwdRefAttrGrps;
4843 /// ::= 'resume' TypeAndValue
4844 bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
4845 Value *Exn; LocTy ExnLoc;
4846 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
4849 ResumeInst *RI = ResumeInst::Create(Exn);
4854 //===----------------------------------------------------------------------===//
4855 // Binary Operators.
4856 //===----------------------------------------------------------------------===//
4859 /// ::= ArithmeticOps TypeAndValue ',' Value
4861 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
4862 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
4863 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
4864 unsigned Opc, unsigned OperandType) {
4865 LocTy Loc; Value *LHS, *RHS;
4866 if (ParseTypeAndValue(LHS, Loc, PFS) ||
4867 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
4868 ParseValue(LHS->getType(), RHS, PFS))
4872 switch (OperandType) {
4873 default: llvm_unreachable("Unknown operand type!");
4874 case 0: // int or FP.
4875 Valid = LHS->getType()->isIntOrIntVectorTy() ||
4876 LHS->getType()->isFPOrFPVectorTy();
4878 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
4879 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
4883 return Error(Loc, "invalid operand type for instruction");
4885 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
4890 /// ::= ArithmeticOps TypeAndValue ',' Value {
4891 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
4893 LocTy Loc; Value *LHS, *RHS;
4894 if (ParseTypeAndValue(LHS, Loc, PFS) ||
4895 ParseToken(lltok::comma, "expected ',' in logical operation") ||
4896 ParseValue(LHS->getType(), RHS, PFS))
4899 if (!LHS->getType()->isIntOrIntVectorTy())
4900 return Error(Loc,"instruction requires integer or integer vector operands");
4902 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
4908 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
4909 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
4910 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
4912 // Parse the integer/fp comparison predicate.
4916 if (ParseCmpPredicate(Pred, Opc) ||
4917 ParseTypeAndValue(LHS, Loc, PFS) ||
4918 ParseToken(lltok::comma, "expected ',' after compare value") ||
4919 ParseValue(LHS->getType(), RHS, PFS))
4922 if (Opc == Instruction::FCmp) {
4923 if (!LHS->getType()->isFPOrFPVectorTy())
4924 return Error(Loc, "fcmp requires floating point operands");
4925 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
4927 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
4928 if (!LHS->getType()->isIntOrIntVectorTy() &&
4929 !LHS->getType()->getScalarType()->isPointerTy())
4930 return Error(Loc, "icmp requires integer operands");
4931 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
4936 //===----------------------------------------------------------------------===//
4937 // Other Instructions.
4938 //===----------------------------------------------------------------------===//
4942 /// ::= CastOpc TypeAndValue 'to' Type
4943 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
4947 Type *DestTy = nullptr;
4948 if (ParseTypeAndValue(Op, Loc, PFS) ||
4949 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
4953 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
4954 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
4955 return Error(Loc, "invalid cast opcode for cast from '" +
4956 getTypeString(Op->getType()) + "' to '" +
4957 getTypeString(DestTy) + "'");
4959 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
4964 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
4965 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
4967 Value *Op0, *Op1, *Op2;
4968 if (ParseTypeAndValue(Op0, Loc, PFS) ||
4969 ParseToken(lltok::comma, "expected ',' after select condition") ||
4970 ParseTypeAndValue(Op1, PFS) ||
4971 ParseToken(lltok::comma, "expected ',' after select value") ||
4972 ParseTypeAndValue(Op2, PFS))
4975 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
4976 return Error(Loc, Reason);
4978 Inst = SelectInst::Create(Op0, Op1, Op2);
4983 /// ::= 'va_arg' TypeAndValue ',' Type
4984 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
4986 Type *EltTy = nullptr;
4988 if (ParseTypeAndValue(Op, PFS) ||
4989 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
4990 ParseType(EltTy, TypeLoc))
4993 if (!EltTy->isFirstClassType())
4994 return Error(TypeLoc, "va_arg requires operand with first class type");
4996 Inst = new VAArgInst(Op, EltTy);
5000 /// ParseExtractElement
5001 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
5002 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
5005 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5006 ParseToken(lltok::comma, "expected ',' after extract value") ||
5007 ParseTypeAndValue(Op1, PFS))
5010 if (!ExtractElementInst::isValidOperands(Op0, Op1))
5011 return Error(Loc, "invalid extractelement operands");
5013 Inst = ExtractElementInst::Create(Op0, Op1);
5017 /// ParseInsertElement
5018 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5019 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
5021 Value *Op0, *Op1, *Op2;
5022 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5023 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5024 ParseTypeAndValue(Op1, PFS) ||
5025 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5026 ParseTypeAndValue(Op2, PFS))
5029 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
5030 return Error(Loc, "invalid insertelement operands");
5032 Inst = InsertElementInst::Create(Op0, Op1, Op2);
5036 /// ParseShuffleVector
5037 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5038 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
5040 Value *Op0, *Op1, *Op2;
5041 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5042 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
5043 ParseTypeAndValue(Op1, PFS) ||
5044 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
5045 ParseTypeAndValue(Op2, PFS))
5048 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
5049 return Error(Loc, "invalid shufflevector operands");
5051 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
5056 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
5057 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
5058 Type *Ty = nullptr; LocTy TypeLoc;
5061 if (ParseType(Ty, TypeLoc) ||
5062 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
5063 ParseValue(Ty, Op0, PFS) ||
5064 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5065 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
5066 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
5069 bool AteExtraComma = false;
5070 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
5072 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
5074 if (!EatIfPresent(lltok::comma))
5077 if (Lex.getKind() == lltok::MetadataVar) {
5078 AteExtraComma = true;
5082 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
5083 ParseValue(Ty, Op0, PFS) ||
5084 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5085 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
5086 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
5090 if (!Ty->isFirstClassType())
5091 return Error(TypeLoc, "phi node must have first class type");
5093 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
5094 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
5095 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
5097 return AteExtraComma ? InstExtraComma : InstNormal;
5101 /// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
5103 /// ::= 'catch' TypeAndValue
5105 /// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
5106 bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
5107 Type *Ty = nullptr; LocTy TyLoc;
5108 Value *PersFn; LocTy PersFnLoc;
5110 if (ParseType(Ty, TyLoc) ||
5111 ParseToken(lltok::kw_personality, "expected 'personality'") ||
5112 ParseTypeAndValue(PersFn, PersFnLoc, PFS))
5115 std::unique_ptr<LandingPadInst> LP(LandingPadInst::Create(Ty, PersFn, 0));
5116 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
5118 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
5119 LandingPadInst::ClauseType CT;
5120 if (EatIfPresent(lltok::kw_catch))
5121 CT = LandingPadInst::Catch;
5122 else if (EatIfPresent(lltok::kw_filter))
5123 CT = LandingPadInst::Filter;
5125 return TokError("expected 'catch' or 'filter' clause type");
5129 if (ParseTypeAndValue(V, VLoc, PFS))
5132 // A 'catch' type expects a non-array constant. A filter clause expects an
5134 if (CT == LandingPadInst::Catch) {
5135 if (isa<ArrayType>(V->getType()))
5136 Error(VLoc, "'catch' clause has an invalid type");
5138 if (!isa<ArrayType>(V->getType()))
5139 Error(VLoc, "'filter' clause has an invalid type");
5142 Constant *CV = dyn_cast<Constant>(V);
5144 return Error(VLoc, "clause argument must be a constant");
5148 Inst = LP.release();
5153 /// ::= 'call' OptionalCallingConv OptionalAttrs Type Value
5154 /// ParameterList OptionalAttrs
5155 /// ::= 'tail' 'call' OptionalCallingConv OptionalAttrs Type Value
5156 /// ParameterList OptionalAttrs
5157 /// ::= 'musttail' 'call' OptionalCallingConv OptionalAttrs Type Value
5158 /// ParameterList OptionalAttrs
5159 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
5160 CallInst::TailCallKind TCK) {
5161 AttrBuilder RetAttrs, FnAttrs;
5162 std::vector<unsigned> FwdRefAttrGrps;
5165 Type *RetType = nullptr;
5168 SmallVector<ParamInfo, 16> ArgList;
5169 LocTy CallLoc = Lex.getLoc();
5171 if ((TCK != CallInst::TCK_None &&
5172 ParseToken(lltok::kw_call, "expected 'tail call'")) ||
5173 ParseOptionalCallingConv(CC) ||
5174 ParseOptionalReturnAttrs(RetAttrs) ||
5175 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
5176 ParseValID(CalleeID) ||
5177 ParseParameterList(ArgList, PFS, TCK == CallInst::TCK_MustTail,
5178 PFS.getFunction().isVarArg()) ||
5179 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
5183 // If RetType is a non-function pointer type, then this is the short syntax
5184 // for the call, which means that RetType is just the return type. Infer the
5185 // rest of the function argument types from the arguments that are present.
5186 FunctionType *Ty = dyn_cast<FunctionType>(RetType);
5188 // Pull out the types of all of the arguments...
5189 std::vector<Type*> ParamTypes;
5190 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
5191 ParamTypes.push_back(ArgList[i].V->getType());
5193 if (!FunctionType::isValidReturnType(RetType))
5194 return Error(RetTypeLoc, "Invalid result type for LLVM function");
5196 Ty = FunctionType::get(RetType, ParamTypes, false);
5199 // Look up the callee.
5201 if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS))
5204 // Set up the Attribute for the function.
5205 SmallVector<AttributeSet, 8> Attrs;
5206 if (RetAttrs.hasAttributes())
5207 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5208 AttributeSet::ReturnIndex,
5211 SmallVector<Value*, 8> Args;
5213 // Loop through FunctionType's arguments and ensure they are specified
5214 // correctly. Also, gather any parameter attributes.
5215 FunctionType::param_iterator I = Ty->param_begin();
5216 FunctionType::param_iterator E = Ty->param_end();
5217 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
5218 Type *ExpectedTy = nullptr;
5221 } else if (!Ty->isVarArg()) {
5222 return Error(ArgList[i].Loc, "too many arguments specified");
5225 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
5226 return Error(ArgList[i].Loc, "argument is not of expected type '" +
5227 getTypeString(ExpectedTy) + "'");
5228 Args.push_back(ArgList[i].V);
5229 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
5230 AttrBuilder B(ArgList[i].Attrs, i + 1);
5231 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
5236 return Error(CallLoc, "not enough parameters specified for call");
5238 if (FnAttrs.hasAttributes()) {
5239 if (FnAttrs.hasAlignmentAttr())
5240 return Error(CallLoc, "call instructions may not have an alignment");
5242 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5243 AttributeSet::FunctionIndex,
5247 // Finish off the Attribute and check them
5248 AttributeSet PAL = AttributeSet::get(Context, Attrs);
5250 CallInst *CI = CallInst::Create(Ty, Callee, Args);
5251 CI->setTailCallKind(TCK);
5252 CI->setCallingConv(CC);
5253 CI->setAttributes(PAL);
5254 ForwardRefAttrGroups[CI] = FwdRefAttrGrps;
5259 //===----------------------------------------------------------------------===//
5260 // Memory Instructions.
5261 //===----------------------------------------------------------------------===//
5264 /// ::= 'alloca' 'inalloca'? Type (',' TypeAndValue)? (',' 'align' i32)?
5265 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
5266 Value *Size = nullptr;
5267 LocTy SizeLoc, TyLoc;
5268 unsigned Alignment = 0;
5271 bool IsInAlloca = EatIfPresent(lltok::kw_inalloca);
5273 if (ParseType(Ty, TyLoc)) return true;
5275 if (Ty->isFunctionTy() || !PointerType::isValidElementType(Ty))
5276 return Error(TyLoc, "invalid type for alloca");
5278 bool AteExtraComma = false;
5279 if (EatIfPresent(lltok::comma)) {
5280 if (Lex.getKind() == lltok::kw_align) {
5281 if (ParseOptionalAlignment(Alignment)) return true;
5282 } else if (Lex.getKind() == lltok::MetadataVar) {
5283 AteExtraComma = true;
5285 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
5286 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5291 if (Size && !Size->getType()->isIntegerTy())
5292 return Error(SizeLoc, "element count must have integer type");
5294 AllocaInst *AI = new AllocaInst(Ty, Size, Alignment);
5295 AI->setUsedWithInAlloca(IsInAlloca);
5297 return AteExtraComma ? InstExtraComma : InstNormal;
5301 /// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
5302 /// ::= 'load' 'atomic' 'volatile'? TypeAndValue
5303 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
5304 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
5305 Value *Val; LocTy Loc;
5306 unsigned Alignment = 0;
5307 bool AteExtraComma = false;
5308 bool isAtomic = false;
5309 AtomicOrdering Ordering = NotAtomic;
5310 SynchronizationScope Scope = CrossThread;
5312 if (Lex.getKind() == lltok::kw_atomic) {
5317 bool isVolatile = false;
5318 if (Lex.getKind() == lltok::kw_volatile) {
5324 LocTy ExplicitTypeLoc = Lex.getLoc();
5325 if (ParseType(Ty) ||
5326 ParseToken(lltok::comma, "expected comma after load's type") ||
5327 ParseTypeAndValue(Val, Loc, PFS) ||
5328 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
5329 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5332 if (!Val->getType()->isPointerTy() || !Ty->isFirstClassType())
5333 return Error(Loc, "load operand must be a pointer to a first class type");
5334 if (isAtomic && !Alignment)
5335 return Error(Loc, "atomic load must have explicit non-zero alignment");
5336 if (Ordering == Release || Ordering == AcquireRelease)
5337 return Error(Loc, "atomic load cannot use Release ordering");
5339 if (Ty != cast<PointerType>(Val->getType())->getElementType())
5340 return Error(ExplicitTypeLoc,
5341 "explicit pointee type doesn't match operand's pointee type");
5343 Inst = new LoadInst(Ty, Val, "", isVolatile, Alignment, Ordering, Scope);
5344 return AteExtraComma ? InstExtraComma : InstNormal;
5349 /// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
5350 /// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
5351 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
5352 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
5353 Value *Val, *Ptr; LocTy Loc, PtrLoc;
5354 unsigned Alignment = 0;
5355 bool AteExtraComma = false;
5356 bool isAtomic = false;
5357 AtomicOrdering Ordering = NotAtomic;
5358 SynchronizationScope Scope = CrossThread;
5360 if (Lex.getKind() == lltok::kw_atomic) {
5365 bool isVolatile = false;
5366 if (Lex.getKind() == lltok::kw_volatile) {
5371 if (ParseTypeAndValue(Val, Loc, PFS) ||
5372 ParseToken(lltok::comma, "expected ',' after store operand") ||
5373 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5374 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
5375 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5378 if (!Ptr->getType()->isPointerTy())
5379 return Error(PtrLoc, "store operand must be a pointer");
5380 if (!Val->getType()->isFirstClassType())
5381 return Error(Loc, "store operand must be a first class value");
5382 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
5383 return Error(Loc, "stored value and pointer type do not match");
5384 if (isAtomic && !Alignment)
5385 return Error(Loc, "atomic store must have explicit non-zero alignment");
5386 if (Ordering == Acquire || Ordering == AcquireRelease)
5387 return Error(Loc, "atomic store cannot use Acquire ordering");
5389 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, Scope);
5390 return AteExtraComma ? InstExtraComma : InstNormal;
5394 /// ::= 'cmpxchg' 'weak'? 'volatile'? TypeAndValue ',' TypeAndValue ','
5395 /// TypeAndValue 'singlethread'? AtomicOrdering AtomicOrdering
5396 int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
5397 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
5398 bool AteExtraComma = false;
5399 AtomicOrdering SuccessOrdering = NotAtomic;
5400 AtomicOrdering FailureOrdering = NotAtomic;
5401 SynchronizationScope Scope = CrossThread;
5402 bool isVolatile = false;
5403 bool isWeak = false;
5405 if (EatIfPresent(lltok::kw_weak))
5408 if (EatIfPresent(lltok::kw_volatile))
5411 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5412 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
5413 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
5414 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
5415 ParseTypeAndValue(New, NewLoc, PFS) ||
5416 ParseScopeAndOrdering(true /*Always atomic*/, Scope, SuccessOrdering) ||
5417 ParseOrdering(FailureOrdering))
5420 if (SuccessOrdering == Unordered || FailureOrdering == Unordered)
5421 return TokError("cmpxchg cannot be unordered");
5422 if (SuccessOrdering < FailureOrdering)
5423 return TokError("cmpxchg must be at least as ordered on success as failure");
5424 if (FailureOrdering == Release || FailureOrdering == AcquireRelease)
5425 return TokError("cmpxchg failure ordering cannot include release semantics");
5426 if (!Ptr->getType()->isPointerTy())
5427 return Error(PtrLoc, "cmpxchg operand must be a pointer");
5428 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
5429 return Error(CmpLoc, "compare value and pointer type do not match");
5430 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
5431 return Error(NewLoc, "new value and pointer type do not match");
5432 if (!New->getType()->isIntegerTy())
5433 return Error(NewLoc, "cmpxchg operand must be an integer");
5434 unsigned Size = New->getType()->getPrimitiveSizeInBits();
5435 if (Size < 8 || (Size & (Size - 1)))
5436 return Error(NewLoc, "cmpxchg operand must be power-of-two byte-sized"
5439 AtomicCmpXchgInst *CXI = new AtomicCmpXchgInst(
5440 Ptr, Cmp, New, SuccessOrdering, FailureOrdering, Scope);
5441 CXI->setVolatile(isVolatile);
5442 CXI->setWeak(isWeak);
5444 return AteExtraComma ? InstExtraComma : InstNormal;
5448 /// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
5449 /// 'singlethread'? AtomicOrdering
5450 int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
5451 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
5452 bool AteExtraComma = false;
5453 AtomicOrdering Ordering = NotAtomic;
5454 SynchronizationScope Scope = CrossThread;
5455 bool isVolatile = false;
5456 AtomicRMWInst::BinOp Operation;
5458 if (EatIfPresent(lltok::kw_volatile))
5461 switch (Lex.getKind()) {
5462 default: return TokError("expected binary operation in atomicrmw");
5463 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
5464 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
5465 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
5466 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
5467 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
5468 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
5469 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
5470 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
5471 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
5472 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
5473 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
5475 Lex.Lex(); // Eat the operation.
5477 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5478 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
5479 ParseTypeAndValue(Val, ValLoc, PFS) ||
5480 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
5483 if (Ordering == Unordered)
5484 return TokError("atomicrmw cannot be unordered");
5485 if (!Ptr->getType()->isPointerTy())
5486 return Error(PtrLoc, "atomicrmw operand must be a pointer");
5487 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
5488 return Error(ValLoc, "atomicrmw value and pointer type do not match");
5489 if (!Val->getType()->isIntegerTy())
5490 return Error(ValLoc, "atomicrmw operand must be an integer");
5491 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
5492 if (Size < 8 || (Size & (Size - 1)))
5493 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
5496 AtomicRMWInst *RMWI =
5497 new AtomicRMWInst(Operation, Ptr, Val, Ordering, Scope);
5498 RMWI->setVolatile(isVolatile);
5500 return AteExtraComma ? InstExtraComma : InstNormal;
5504 /// ::= 'fence' 'singlethread'? AtomicOrdering
5505 int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
5506 AtomicOrdering Ordering = NotAtomic;
5507 SynchronizationScope Scope = CrossThread;
5508 if (ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
5511 if (Ordering == Unordered)
5512 return TokError("fence cannot be unordered");
5513 if (Ordering == Monotonic)
5514 return TokError("fence cannot be monotonic");
5516 Inst = new FenceInst(Context, Ordering, Scope);
5520 /// ParseGetElementPtr
5521 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
5522 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
5523 Value *Ptr = nullptr;
5524 Value *Val = nullptr;
5527 bool InBounds = EatIfPresent(lltok::kw_inbounds);
5530 LocTy ExplicitTypeLoc = Lex.getLoc();
5531 if (ParseType(Ty) ||
5532 ParseToken(lltok::comma, "expected comma after getelementptr's type") ||
5533 ParseTypeAndValue(Ptr, Loc, PFS))
5536 Type *BaseType = Ptr->getType();
5537 PointerType *BasePointerType = dyn_cast<PointerType>(BaseType->getScalarType());
5538 if (!BasePointerType)
5539 return Error(Loc, "base of getelementptr must be a pointer");
5541 if (Ty != BasePointerType->getElementType())
5542 return Error(ExplicitTypeLoc,
5543 "explicit pointee type doesn't match operand's pointee type");
5545 SmallVector<Value*, 16> Indices;
5546 bool AteExtraComma = false;
5547 while (EatIfPresent(lltok::comma)) {
5548 if (Lex.getKind() == lltok::MetadataVar) {
5549 AteExtraComma = true;
5552 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
5553 if (!Val->getType()->getScalarType()->isIntegerTy())
5554 return Error(EltLoc, "getelementptr index must be an integer");
5555 if (Val->getType()->isVectorTy() != Ptr->getType()->isVectorTy())
5556 return Error(EltLoc, "getelementptr index type missmatch");
5557 if (Val->getType()->isVectorTy()) {
5558 unsigned ValNumEl = cast<VectorType>(Val->getType())->getNumElements();
5559 unsigned PtrNumEl = cast<VectorType>(Ptr->getType())->getNumElements();
5560 if (ValNumEl != PtrNumEl)
5561 return Error(EltLoc,
5562 "getelementptr vector index has a wrong number of elements");
5564 Indices.push_back(Val);
5567 SmallPtrSet<const Type*, 4> Visited;
5568 if (!Indices.empty() && !Ty->isSized(&Visited))
5569 return Error(Loc, "base element of getelementptr must be sized");
5571 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
5572 return Error(Loc, "invalid getelementptr indices");
5573 Inst = GetElementPtrInst::Create(Ty, Ptr, Indices);
5575 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
5576 return AteExtraComma ? InstExtraComma : InstNormal;
5579 /// ParseExtractValue
5580 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
5581 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
5582 Value *Val; LocTy Loc;
5583 SmallVector<unsigned, 4> Indices;
5585 if (ParseTypeAndValue(Val, Loc, PFS) ||
5586 ParseIndexList(Indices, AteExtraComma))
5589 if (!Val->getType()->isAggregateType())
5590 return Error(Loc, "extractvalue operand must be aggregate type");
5592 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
5593 return Error(Loc, "invalid indices for extractvalue");
5594 Inst = ExtractValueInst::Create(Val, Indices);
5595 return AteExtraComma ? InstExtraComma : InstNormal;
5598 /// ParseInsertValue
5599 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
5600 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
5601 Value *Val0, *Val1; LocTy Loc0, Loc1;
5602 SmallVector<unsigned, 4> Indices;
5604 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
5605 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
5606 ParseTypeAndValue(Val1, Loc1, PFS) ||
5607 ParseIndexList(Indices, AteExtraComma))
5610 if (!Val0->getType()->isAggregateType())
5611 return Error(Loc0, "insertvalue operand must be aggregate type");
5613 Type *IndexedType = ExtractValueInst::getIndexedType(Val0->getType(), Indices);
5615 return Error(Loc0, "invalid indices for insertvalue");
5616 if (IndexedType != Val1->getType())
5617 return Error(Loc1, "insertvalue operand and field disagree in type: '" +
5618 getTypeString(Val1->getType()) + "' instead of '" +
5619 getTypeString(IndexedType) + "'");
5620 Inst = InsertValueInst::Create(Val0, Val1, Indices);
5621 return AteExtraComma ? InstExtraComma : InstNormal;
5624 //===----------------------------------------------------------------------===//
5625 // Embedded metadata.
5626 //===----------------------------------------------------------------------===//
5628 /// ParseMDNodeVector
5629 /// ::= { Element (',' Element)* }
5631 /// ::= 'null' | TypeAndValue
5632 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Metadata *> &Elts) {
5633 if (ParseToken(lltok::lbrace, "expected '{' here"))
5636 // Check for an empty list.
5637 if (EatIfPresent(lltok::rbrace))
5641 // Null is a special case since it is typeless.
5642 if (EatIfPresent(lltok::kw_null)) {
5643 Elts.push_back(nullptr);
5648 if (ParseMetadata(MD, nullptr))
5651 } while (EatIfPresent(lltok::comma));
5653 return ParseToken(lltok::rbrace, "expected end of metadata node");
5656 //===----------------------------------------------------------------------===//
5657 // Use-list order directives.
5658 //===----------------------------------------------------------------------===//
5659 bool LLParser::sortUseListOrder(Value *V, ArrayRef<unsigned> Indexes,
5662 return Error(Loc, "value has no uses");
5664 unsigned NumUses = 0;
5665 SmallDenseMap<const Use *, unsigned, 16> Order;
5666 for (const Use &U : V->uses()) {
5667 if (++NumUses > Indexes.size())
5669 Order[&U] = Indexes[NumUses - 1];
5672 return Error(Loc, "value only has one use");
5673 if (Order.size() != Indexes.size() || NumUses > Indexes.size())
5674 return Error(Loc, "wrong number of indexes, expected " +
5675 Twine(std::distance(V->use_begin(), V->use_end())));
5677 V->sortUseList([&](const Use &L, const Use &R) {
5678 return Order.lookup(&L) < Order.lookup(&R);
5683 /// ParseUseListOrderIndexes
5684 /// ::= '{' uint32 (',' uint32)+ '}'
5685 bool LLParser::ParseUseListOrderIndexes(SmallVectorImpl<unsigned> &Indexes) {
5686 SMLoc Loc = Lex.getLoc();
5687 if (ParseToken(lltok::lbrace, "expected '{' here"))
5689 if (Lex.getKind() == lltok::rbrace)
5690 return Lex.Error("expected non-empty list of uselistorder indexes");
5692 // Use Offset, Max, and IsOrdered to check consistency of indexes. The
5693 // indexes should be distinct numbers in the range [0, size-1], and should
5695 unsigned Offset = 0;
5697 bool IsOrdered = true;
5698 assert(Indexes.empty() && "Expected empty order vector");
5701 if (ParseUInt32(Index))
5704 // Update consistency checks.
5705 Offset += Index - Indexes.size();
5706 Max = std::max(Max, Index);
5707 IsOrdered &= Index == Indexes.size();
5709 Indexes.push_back(Index);
5710 } while (EatIfPresent(lltok::comma));
5712 if (ParseToken(lltok::rbrace, "expected '}' here"))
5715 if (Indexes.size() < 2)
5716 return Error(Loc, "expected >= 2 uselistorder indexes");
5717 if (Offset != 0 || Max >= Indexes.size())
5718 return Error(Loc, "expected distinct uselistorder indexes in range [0, size)");
5720 return Error(Loc, "expected uselistorder indexes to change the order");
5725 /// ParseUseListOrder
5726 /// ::= 'uselistorder' Type Value ',' UseListOrderIndexes
5727 bool LLParser::ParseUseListOrder(PerFunctionState *PFS) {
5728 SMLoc Loc = Lex.getLoc();
5729 if (ParseToken(lltok::kw_uselistorder, "expected uselistorder directive"))
5733 SmallVector<unsigned, 16> Indexes;
5734 if (ParseTypeAndValue(V, PFS) ||
5735 ParseToken(lltok::comma, "expected comma in uselistorder directive") ||
5736 ParseUseListOrderIndexes(Indexes))
5739 return sortUseListOrder(V, Indexes, Loc);
5742 /// ParseUseListOrderBB
5743 /// ::= 'uselistorder_bb' @foo ',' %bar ',' UseListOrderIndexes
5744 bool LLParser::ParseUseListOrderBB() {
5745 assert(Lex.getKind() == lltok::kw_uselistorder_bb);
5746 SMLoc Loc = Lex.getLoc();
5750 SmallVector<unsigned, 16> Indexes;
5751 if (ParseValID(Fn) ||
5752 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
5753 ParseValID(Label) ||
5754 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
5755 ParseUseListOrderIndexes(Indexes))
5758 // Check the function.
5760 if (Fn.Kind == ValID::t_GlobalName)
5761 GV = M->getNamedValue(Fn.StrVal);
5762 else if (Fn.Kind == ValID::t_GlobalID)
5763 GV = Fn.UIntVal < NumberedVals.size() ? NumberedVals[Fn.UIntVal] : nullptr;
5765 return Error(Fn.Loc, "expected function name in uselistorder_bb");
5767 return Error(Fn.Loc, "invalid function forward reference in uselistorder_bb");
5768 auto *F = dyn_cast<Function>(GV);
5770 return Error(Fn.Loc, "expected function name in uselistorder_bb");
5771 if (F->isDeclaration())
5772 return Error(Fn.Loc, "invalid declaration in uselistorder_bb");
5774 // Check the basic block.
5775 if (Label.Kind == ValID::t_LocalID)
5776 return Error(Label.Loc, "invalid numeric label in uselistorder_bb");
5777 if (Label.Kind != ValID::t_LocalName)
5778 return Error(Label.Loc, "expected basic block name in uselistorder_bb");
5779 Value *V = F->getValueSymbolTable().lookup(Label.StrVal);
5781 return Error(Label.Loc, "invalid basic block in uselistorder_bb");
5782 if (!isa<BasicBlock>(V))
5783 return Error(Label.Loc, "expected basic block in uselistorder_bb");
5785 return sortUseListOrder(V, Indexes, Loc);