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 OptionalUnNammedAddr
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 if (ParseToken(lltok::rbrace, "expected end of metadata node"))
573 /// ParseStandaloneMetadata:
575 bool LLParser::ParseStandaloneMetadata() {
576 assert(Lex.getKind() == lltok::exclaim);
578 unsigned MetadataID = 0;
581 if (ParseUInt32(MetadataID) ||
582 ParseToken(lltok::equal, "expected '=' here"))
585 // Detect common error, from old metadata syntax.
586 if (Lex.getKind() == lltok::Type)
587 return TokError("unexpected type in metadata definition");
589 bool IsDistinct = EatIfPresent(lltok::kw_distinct);
590 if (Lex.getKind() == lltok::MetadataVar) {
591 if (ParseSpecializedMDNode(Init, IsDistinct))
593 } else if (ParseToken(lltok::exclaim, "Expected '!' here") ||
594 ParseMDTuple(Init, IsDistinct))
597 // See if this was forward referenced, if so, handle it.
598 auto FI = ForwardRefMDNodes.find(MetadataID);
599 if (FI != ForwardRefMDNodes.end()) {
600 FI->second.first->replaceAllUsesWith(Init);
601 ForwardRefMDNodes.erase(FI);
603 assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work");
605 if (NumberedMetadata.count(MetadataID))
606 return TokError("Metadata id is already used");
607 NumberedMetadata[MetadataID].reset(Init);
613 static bool isValidVisibilityForLinkage(unsigned V, unsigned L) {
614 return !GlobalValue::isLocalLinkage((GlobalValue::LinkageTypes)L) ||
615 (GlobalValue::VisibilityTypes)V == GlobalValue::DefaultVisibility;
619 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility
620 /// OptionalDLLStorageClass OptionalThreadLocal
621 /// OptionalUnNammedAddr 'alias' Aliasee
626 /// Everything through OptionalUnNammedAddr has already been parsed.
628 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc, unsigned L,
629 unsigned Visibility, unsigned DLLStorageClass,
630 GlobalVariable::ThreadLocalMode TLM,
632 assert(Lex.getKind() == lltok::kw_alias);
635 GlobalValue::LinkageTypes Linkage = (GlobalValue::LinkageTypes) L;
637 if(!GlobalAlias::isValidLinkage(Linkage))
638 return Error(NameLoc, "invalid linkage type for alias");
640 if (!isValidVisibilityForLinkage(Visibility, L))
641 return Error(NameLoc,
642 "symbol with local linkage must have default visibility");
645 LocTy AliaseeLoc = Lex.getLoc();
646 if (Lex.getKind() != lltok::kw_bitcast &&
647 Lex.getKind() != lltok::kw_getelementptr &&
648 Lex.getKind() != lltok::kw_addrspacecast &&
649 Lex.getKind() != lltok::kw_inttoptr) {
650 if (ParseGlobalTypeAndValue(Aliasee))
653 // The bitcast dest type is not present, it is implied by the dest type.
657 if (ID.Kind != ValID::t_Constant)
658 return Error(AliaseeLoc, "invalid aliasee");
659 Aliasee = ID.ConstantVal;
662 Type *AliaseeType = Aliasee->getType();
663 auto *PTy = dyn_cast<PointerType>(AliaseeType);
665 return Error(AliaseeLoc, "An alias must have pointer type");
667 // Okay, create the alias but do not insert it into the module yet.
668 std::unique_ptr<GlobalAlias> GA(
669 GlobalAlias::create(PTy, (GlobalValue::LinkageTypes)Linkage, Name,
670 Aliasee, /*Parent*/ nullptr));
671 GA->setThreadLocalMode(TLM);
672 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
673 GA->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
674 GA->setUnnamedAddr(UnnamedAddr);
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 OptionalUnNammedAddr OptionalAddrSpace
712 /// OptionalExternallyInitialized GlobalType Type Const
713 /// ::= OptionalLinkage OptionalVisibility OptionalDLLStorageClass
714 /// OptionalThreadLocal OptionalUnNammedAddr OptionalAddrSpace
715 /// OptionalExternallyInitialized GlobalType Type Const
717 /// Everything up to and including OptionalUnNammedAddr 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->getType()->getElementType() != 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_inlinehint: B.addAttribute(Attribute::InlineHint); break;
944 case lltok::kw_jumptable: B.addAttribute(Attribute::JumpTable); break;
945 case lltok::kw_minsize: B.addAttribute(Attribute::MinSize); break;
946 case lltok::kw_naked: B.addAttribute(Attribute::Naked); break;
947 case lltok::kw_nobuiltin: B.addAttribute(Attribute::NoBuiltin); break;
948 case lltok::kw_noduplicate: B.addAttribute(Attribute::NoDuplicate); break;
949 case lltok::kw_noimplicitfloat: B.addAttribute(Attribute::NoImplicitFloat); break;
950 case lltok::kw_noinline: B.addAttribute(Attribute::NoInline); break;
951 case lltok::kw_nonlazybind: B.addAttribute(Attribute::NonLazyBind); break;
952 case lltok::kw_noredzone: B.addAttribute(Attribute::NoRedZone); break;
953 case lltok::kw_noreturn: B.addAttribute(Attribute::NoReturn); break;
954 case lltok::kw_nounwind: B.addAttribute(Attribute::NoUnwind); break;
955 case lltok::kw_optnone: B.addAttribute(Attribute::OptimizeNone); break;
956 case lltok::kw_optsize: B.addAttribute(Attribute::OptimizeForSize); break;
957 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
958 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
959 case lltok::kw_returns_twice: B.addAttribute(Attribute::ReturnsTwice); break;
960 case lltok::kw_ssp: B.addAttribute(Attribute::StackProtect); break;
961 case lltok::kw_sspreq: B.addAttribute(Attribute::StackProtectReq); break;
962 case lltok::kw_sspstrong: B.addAttribute(Attribute::StackProtectStrong); break;
963 case lltok::kw_sanitize_address: B.addAttribute(Attribute::SanitizeAddress); break;
964 case lltok::kw_sanitize_thread: B.addAttribute(Attribute::SanitizeThread); break;
965 case lltok::kw_sanitize_memory: B.addAttribute(Attribute::SanitizeMemory); break;
966 case lltok::kw_uwtable: B.addAttribute(Attribute::UWTable); break;
969 case lltok::kw_inreg:
970 case lltok::kw_signext:
971 case lltok::kw_zeroext:
974 "invalid use of attribute on a function");
976 case lltok::kw_byval:
977 case lltok::kw_dereferenceable:
978 case lltok::kw_dereferenceable_or_null:
979 case lltok::kw_inalloca:
981 case lltok::kw_noalias:
982 case lltok::kw_nocapture:
983 case lltok::kw_nonnull:
984 case lltok::kw_returned:
988 "invalid use of parameter-only attribute on a function");
996 //===----------------------------------------------------------------------===//
997 // GlobalValue Reference/Resolution Routines.
998 //===----------------------------------------------------------------------===//
1000 /// GetGlobalVal - Get a value with the specified name or ID, creating a
1001 /// forward reference record if needed. This can return null if the value
1002 /// exists but does not have the right type.
1003 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
1005 PointerType *PTy = dyn_cast<PointerType>(Ty);
1007 Error(Loc, "global variable reference must have pointer type");
1011 // Look this name up in the normal function symbol table.
1013 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
1015 // If this is a forward reference for the value, see if we already created a
1016 // forward ref record.
1018 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
1019 I = ForwardRefVals.find(Name);
1020 if (I != ForwardRefVals.end())
1021 Val = I->second.first;
1024 // If we have the value in the symbol table or fwd-ref table, return it.
1026 if (Val->getType() == Ty) return Val;
1027 Error(Loc, "'@" + Name + "' defined with type '" +
1028 getTypeString(Val->getType()) + "'");
1032 // Otherwise, create a new forward reference for this value and remember it.
1033 GlobalValue *FwdVal;
1034 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1035 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
1037 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1038 GlobalValue::ExternalWeakLinkage, nullptr, Name,
1039 nullptr, GlobalVariable::NotThreadLocal,
1040 PTy->getAddressSpace());
1042 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1046 GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
1047 PointerType *PTy = dyn_cast<PointerType>(Ty);
1049 Error(Loc, "global variable reference must have pointer type");
1053 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
1055 // If this is a forward reference for the value, see if we already created a
1056 // forward ref record.
1058 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
1059 I = ForwardRefValIDs.find(ID);
1060 if (I != ForwardRefValIDs.end())
1061 Val = I->second.first;
1064 // If we have the value in the symbol table or fwd-ref table, return it.
1066 if (Val->getType() == Ty) return Val;
1067 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
1068 getTypeString(Val->getType()) + "'");
1072 // Otherwise, create a new forward reference for this value and remember it.
1073 GlobalValue *FwdVal;
1074 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1075 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
1077 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1078 GlobalValue::ExternalWeakLinkage, nullptr, "");
1080 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1085 //===----------------------------------------------------------------------===//
1086 // Comdat Reference/Resolution Routines.
1087 //===----------------------------------------------------------------------===//
1089 Comdat *LLParser::getComdat(const std::string &Name, LocTy Loc) {
1090 // Look this name up in the comdat symbol table.
1091 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
1092 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
1093 if (I != ComdatSymTab.end())
1096 // Otherwise, create a new forward reference for this value and remember it.
1097 Comdat *C = M->getOrInsertComdat(Name);
1098 ForwardRefComdats[Name] = Loc;
1103 //===----------------------------------------------------------------------===//
1105 //===----------------------------------------------------------------------===//
1107 /// ParseToken - If the current token has the specified kind, eat it and return
1108 /// success. Otherwise, emit the specified error and return failure.
1109 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
1110 if (Lex.getKind() != T)
1111 return TokError(ErrMsg);
1116 /// ParseStringConstant
1117 /// ::= StringConstant
1118 bool LLParser::ParseStringConstant(std::string &Result) {
1119 if (Lex.getKind() != lltok::StringConstant)
1120 return TokError("expected string constant");
1121 Result = Lex.getStrVal();
1128 bool LLParser::ParseUInt32(unsigned &Val) {
1129 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1130 return TokError("expected integer");
1131 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
1132 if (Val64 != unsigned(Val64))
1133 return TokError("expected 32-bit integer (too large)");
1141 bool LLParser::ParseUInt64(uint64_t &Val) {
1142 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1143 return TokError("expected integer");
1144 Val = Lex.getAPSIntVal().getLimitedValue();
1150 /// := 'localdynamic'
1151 /// := 'initialexec'
1153 bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
1154 switch (Lex.getKind()) {
1156 return TokError("expected localdynamic, initialexec or localexec");
1157 case lltok::kw_localdynamic:
1158 TLM = GlobalVariable::LocalDynamicTLSModel;
1160 case lltok::kw_initialexec:
1161 TLM = GlobalVariable::InitialExecTLSModel;
1163 case lltok::kw_localexec:
1164 TLM = GlobalVariable::LocalExecTLSModel;
1172 /// ParseOptionalThreadLocal
1174 /// := 'thread_local'
1175 /// := 'thread_local' '(' tlsmodel ')'
1176 bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
1177 TLM = GlobalVariable::NotThreadLocal;
1178 if (!EatIfPresent(lltok::kw_thread_local))
1181 TLM = GlobalVariable::GeneralDynamicTLSModel;
1182 if (Lex.getKind() == lltok::lparen) {
1184 return ParseTLSModel(TLM) ||
1185 ParseToken(lltok::rparen, "expected ')' after thread local model");
1190 /// ParseOptionalAddrSpace
1192 /// := 'addrspace' '(' uint32 ')'
1193 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
1195 if (!EatIfPresent(lltok::kw_addrspace))
1197 return ParseToken(lltok::lparen, "expected '(' in address space") ||
1198 ParseUInt32(AddrSpace) ||
1199 ParseToken(lltok::rparen, "expected ')' in address space");
1202 /// ParseOptionalParamAttrs - Parse a potentially empty list of parameter attributes.
1203 bool LLParser::ParseOptionalParamAttrs(AttrBuilder &B) {
1204 bool HaveError = false;
1209 lltok::Kind Token = Lex.getKind();
1211 default: // End of attributes.
1213 case lltok::kw_align: {
1215 if (ParseOptionalAlignment(Alignment))
1217 B.addAlignmentAttr(Alignment);
1220 case lltok::kw_byval: B.addAttribute(Attribute::ByVal); break;
1221 case lltok::kw_dereferenceable: {
1223 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1225 B.addDereferenceableAttr(Bytes);
1228 case lltok::kw_dereferenceable_or_null: {
1230 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1232 B.addDereferenceableOrNullAttr(Bytes);
1235 case lltok::kw_inalloca: B.addAttribute(Attribute::InAlloca); break;
1236 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1237 case lltok::kw_nest: B.addAttribute(Attribute::Nest); break;
1238 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1239 case lltok::kw_nocapture: B.addAttribute(Attribute::NoCapture); break;
1240 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1241 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1242 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1243 case lltok::kw_returned: B.addAttribute(Attribute::Returned); break;
1244 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1245 case lltok::kw_sret: B.addAttribute(Attribute::StructRet); break;
1246 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1248 case lltok::kw_alignstack:
1249 case lltok::kw_alwaysinline:
1250 case lltok::kw_builtin:
1251 case lltok::kw_inlinehint:
1252 case lltok::kw_jumptable:
1253 case lltok::kw_minsize:
1254 case lltok::kw_naked:
1255 case lltok::kw_nobuiltin:
1256 case lltok::kw_noduplicate:
1257 case lltok::kw_noimplicitfloat:
1258 case lltok::kw_noinline:
1259 case lltok::kw_nonlazybind:
1260 case lltok::kw_noredzone:
1261 case lltok::kw_noreturn:
1262 case lltok::kw_nounwind:
1263 case lltok::kw_optnone:
1264 case lltok::kw_optsize:
1265 case lltok::kw_returns_twice:
1266 case lltok::kw_sanitize_address:
1267 case lltok::kw_sanitize_memory:
1268 case lltok::kw_sanitize_thread:
1270 case lltok::kw_sspreq:
1271 case lltok::kw_sspstrong:
1272 case lltok::kw_uwtable:
1273 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1281 /// ParseOptionalReturnAttrs - Parse a potentially empty list of return attributes.
1282 bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
1283 bool HaveError = false;
1288 lltok::Kind Token = Lex.getKind();
1290 default: // End of attributes.
1292 case lltok::kw_dereferenceable: {
1294 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1296 B.addDereferenceableAttr(Bytes);
1299 case lltok::kw_dereferenceable_or_null: {
1301 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1303 B.addDereferenceableOrNullAttr(Bytes);
1306 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1307 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1308 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1309 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1310 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1313 case lltok::kw_align:
1314 case lltok::kw_byval:
1315 case lltok::kw_inalloca:
1316 case lltok::kw_nest:
1317 case lltok::kw_nocapture:
1318 case lltok::kw_returned:
1319 case lltok::kw_sret:
1320 HaveError |= Error(Lex.getLoc(), "invalid use of parameter-only attribute");
1323 case lltok::kw_alignstack:
1324 case lltok::kw_alwaysinline:
1325 case lltok::kw_builtin:
1326 case lltok::kw_cold:
1327 case lltok::kw_inlinehint:
1328 case lltok::kw_jumptable:
1329 case lltok::kw_minsize:
1330 case lltok::kw_naked:
1331 case lltok::kw_nobuiltin:
1332 case lltok::kw_noduplicate:
1333 case lltok::kw_noimplicitfloat:
1334 case lltok::kw_noinline:
1335 case lltok::kw_nonlazybind:
1336 case lltok::kw_noredzone:
1337 case lltok::kw_noreturn:
1338 case lltok::kw_nounwind:
1339 case lltok::kw_optnone:
1340 case lltok::kw_optsize:
1341 case lltok::kw_returns_twice:
1342 case lltok::kw_sanitize_address:
1343 case lltok::kw_sanitize_memory:
1344 case lltok::kw_sanitize_thread:
1346 case lltok::kw_sspreq:
1347 case lltok::kw_sspstrong:
1348 case lltok::kw_uwtable:
1349 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1352 case lltok::kw_readnone:
1353 case lltok::kw_readonly:
1354 HaveError |= Error(Lex.getLoc(), "invalid use of attribute on return type");
1361 /// ParseOptionalLinkage
1368 /// ::= 'linkonce_odr'
1369 /// ::= 'available_externally'
1372 /// ::= 'extern_weak'
1374 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1376 switch (Lex.getKind()) {
1377 default: Res=GlobalValue::ExternalLinkage; return false;
1378 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1379 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1380 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1381 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1382 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1383 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1384 case lltok::kw_available_externally:
1385 Res = GlobalValue::AvailableExternallyLinkage;
1387 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1388 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1389 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1390 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1397 /// ParseOptionalVisibility
1403 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1404 switch (Lex.getKind()) {
1405 default: Res = GlobalValue::DefaultVisibility; return false;
1406 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1407 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1408 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1414 /// ParseOptionalDLLStorageClass
1419 bool LLParser::ParseOptionalDLLStorageClass(unsigned &Res) {
1420 switch (Lex.getKind()) {
1421 default: Res = GlobalValue::DefaultStorageClass; return false;
1422 case lltok::kw_dllimport: Res = GlobalValue::DLLImportStorageClass; break;
1423 case lltok::kw_dllexport: Res = GlobalValue::DLLExportStorageClass; break;
1429 /// ParseOptionalCallingConv
1433 /// ::= 'intel_ocl_bicc'
1435 /// ::= 'x86_stdcallcc'
1436 /// ::= 'x86_fastcallcc'
1437 /// ::= 'x86_thiscallcc'
1438 /// ::= 'x86_vectorcallcc'
1439 /// ::= 'arm_apcscc'
1440 /// ::= 'arm_aapcscc'
1441 /// ::= 'arm_aapcs_vfpcc'
1442 /// ::= 'msp430_intrcc'
1443 /// ::= 'ptx_kernel'
1444 /// ::= 'ptx_device'
1446 /// ::= 'spir_kernel'
1447 /// ::= 'x86_64_sysvcc'
1448 /// ::= 'x86_64_win64cc'
1449 /// ::= 'webkit_jscc'
1451 /// ::= 'preserve_mostcc'
1452 /// ::= 'preserve_allcc'
1456 bool LLParser::ParseOptionalCallingConv(unsigned &CC) {
1457 switch (Lex.getKind()) {
1458 default: CC = CallingConv::C; return false;
1459 case lltok::kw_ccc: CC = CallingConv::C; break;
1460 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1461 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1462 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1463 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1464 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1465 case lltok::kw_x86_vectorcallcc:CC = CallingConv::X86_VectorCall; break;
1466 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1467 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1468 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1469 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1470 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1471 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1472 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1473 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1474 case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1475 case lltok::kw_x86_64_sysvcc: CC = CallingConv::X86_64_SysV; break;
1476 case lltok::kw_x86_64_win64cc: CC = CallingConv::X86_64_Win64; break;
1477 case lltok::kw_webkit_jscc: CC = CallingConv::WebKit_JS; break;
1478 case lltok::kw_anyregcc: CC = CallingConv::AnyReg; break;
1479 case lltok::kw_preserve_mostcc:CC = CallingConv::PreserveMost; break;
1480 case lltok::kw_preserve_allcc: CC = CallingConv::PreserveAll; break;
1481 case lltok::kw_ghccc: CC = CallingConv::GHC; break;
1482 case lltok::kw_cc: {
1484 return ParseUInt32(CC);
1492 /// ParseMetadataAttachment
1494 bool LLParser::ParseMetadataAttachment(unsigned &Kind, MDNode *&MD) {
1495 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata attachment");
1497 std::string Name = Lex.getStrVal();
1498 Kind = M->getMDKindID(Name);
1501 return ParseMDNode(MD);
1504 /// ParseInstructionMetadata
1505 /// ::= !dbg !42 (',' !dbg !57)*
1506 bool LLParser::ParseInstructionMetadata(Instruction &Inst) {
1508 if (Lex.getKind() != lltok::MetadataVar)
1509 return TokError("expected metadata after comma");
1513 if (ParseMetadataAttachment(MDK, N))
1516 Inst.setMetadata(MDK, N);
1517 if (MDK == LLVMContext::MD_tbaa)
1518 InstsWithTBAATag.push_back(&Inst);
1520 // If this is the end of the list, we're done.
1521 } while (EatIfPresent(lltok::comma));
1525 /// ParseOptionalFunctionMetadata
1527 bool LLParser::ParseOptionalFunctionMetadata(Function &F) {
1528 while (Lex.getKind() == lltok::MetadataVar) {
1531 if (ParseMetadataAttachment(MDK, N))
1534 F.setMetadata(MDK, N);
1539 /// ParseOptionalAlignment
1542 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1544 if (!EatIfPresent(lltok::kw_align))
1546 LocTy AlignLoc = Lex.getLoc();
1547 if (ParseUInt32(Alignment)) return true;
1548 if (!isPowerOf2_32(Alignment))
1549 return Error(AlignLoc, "alignment is not a power of two");
1550 if (Alignment > Value::MaximumAlignment)
1551 return Error(AlignLoc, "huge alignments are not supported yet");
1555 /// ParseOptionalDerefAttrBytes
1557 /// ::= AttrKind '(' 4 ')'
1559 /// where AttrKind is either 'dereferenceable' or 'dereferenceable_or_null'.
1560 bool LLParser::ParseOptionalDerefAttrBytes(lltok::Kind AttrKind,
1562 assert((AttrKind == lltok::kw_dereferenceable ||
1563 AttrKind == lltok::kw_dereferenceable_or_null) &&
1567 if (!EatIfPresent(AttrKind))
1569 LocTy ParenLoc = Lex.getLoc();
1570 if (!EatIfPresent(lltok::lparen))
1571 return Error(ParenLoc, "expected '('");
1572 LocTy DerefLoc = Lex.getLoc();
1573 if (ParseUInt64(Bytes)) return true;
1574 ParenLoc = Lex.getLoc();
1575 if (!EatIfPresent(lltok::rparen))
1576 return Error(ParenLoc, "expected ')'");
1578 return Error(DerefLoc, "dereferenceable bytes must be non-zero");
1582 /// ParseOptionalCommaAlign
1586 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1588 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1589 bool &AteExtraComma) {
1590 AteExtraComma = false;
1591 while (EatIfPresent(lltok::comma)) {
1592 // Metadata at the end is an early exit.
1593 if (Lex.getKind() == lltok::MetadataVar) {
1594 AteExtraComma = true;
1598 if (Lex.getKind() != lltok::kw_align)
1599 return Error(Lex.getLoc(), "expected metadata or 'align'");
1601 if (ParseOptionalAlignment(Alignment)) return true;
1607 /// ParseScopeAndOrdering
1608 /// if isAtomic: ::= 'singlethread'? AtomicOrdering
1611 /// This sets Scope and Ordering to the parsed values.
1612 bool LLParser::ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope,
1613 AtomicOrdering &Ordering) {
1617 Scope = CrossThread;
1618 if (EatIfPresent(lltok::kw_singlethread))
1619 Scope = SingleThread;
1621 return ParseOrdering(Ordering);
1625 /// ::= AtomicOrdering
1627 /// This sets Ordering to the parsed value.
1628 bool LLParser::ParseOrdering(AtomicOrdering &Ordering) {
1629 switch (Lex.getKind()) {
1630 default: return TokError("Expected ordering on atomic instruction");
1631 case lltok::kw_unordered: Ordering = Unordered; break;
1632 case lltok::kw_monotonic: Ordering = Monotonic; break;
1633 case lltok::kw_acquire: Ordering = Acquire; break;
1634 case lltok::kw_release: Ordering = Release; break;
1635 case lltok::kw_acq_rel: Ordering = AcquireRelease; break;
1636 case lltok::kw_seq_cst: Ordering = SequentiallyConsistent; break;
1642 /// ParseOptionalStackAlignment
1644 /// ::= 'alignstack' '(' 4 ')'
1645 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1647 if (!EatIfPresent(lltok::kw_alignstack))
1649 LocTy ParenLoc = Lex.getLoc();
1650 if (!EatIfPresent(lltok::lparen))
1651 return Error(ParenLoc, "expected '('");
1652 LocTy AlignLoc = Lex.getLoc();
1653 if (ParseUInt32(Alignment)) return true;
1654 ParenLoc = Lex.getLoc();
1655 if (!EatIfPresent(lltok::rparen))
1656 return Error(ParenLoc, "expected ')'");
1657 if (!isPowerOf2_32(Alignment))
1658 return Error(AlignLoc, "stack alignment is not a power of two");
1662 /// ParseIndexList - This parses the index list for an insert/extractvalue
1663 /// instruction. This sets AteExtraComma in the case where we eat an extra
1664 /// comma at the end of the line and find that it is followed by metadata.
1665 /// Clients that don't allow metadata can call the version of this function that
1666 /// only takes one argument.
1669 /// ::= (',' uint32)+
1671 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1672 bool &AteExtraComma) {
1673 AteExtraComma = false;
1675 if (Lex.getKind() != lltok::comma)
1676 return TokError("expected ',' as start of index list");
1678 while (EatIfPresent(lltok::comma)) {
1679 if (Lex.getKind() == lltok::MetadataVar) {
1680 if (Indices.empty()) return TokError("expected index");
1681 AteExtraComma = true;
1685 if (ParseUInt32(Idx)) return true;
1686 Indices.push_back(Idx);
1692 //===----------------------------------------------------------------------===//
1694 //===----------------------------------------------------------------------===//
1696 /// ParseType - Parse a type.
1697 bool LLParser::ParseType(Type *&Result, const Twine &Msg, bool AllowVoid) {
1698 SMLoc TypeLoc = Lex.getLoc();
1699 switch (Lex.getKind()) {
1701 return TokError(Msg);
1703 // Type ::= 'float' | 'void' (etc)
1704 Result = Lex.getTyVal();
1708 // Type ::= StructType
1709 if (ParseAnonStructType(Result, false))
1712 case lltok::lsquare:
1713 // Type ::= '[' ... ']'
1714 Lex.Lex(); // eat the lsquare.
1715 if (ParseArrayVectorType(Result, false))
1718 case lltok::less: // Either vector or packed struct.
1719 // Type ::= '<' ... '>'
1721 if (Lex.getKind() == lltok::lbrace) {
1722 if (ParseAnonStructType(Result, true) ||
1723 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1725 } else if (ParseArrayVectorType(Result, true))
1728 case lltok::LocalVar: {
1730 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
1732 // If the type hasn't been defined yet, create a forward definition and
1733 // remember where that forward def'n was seen (in case it never is defined).
1735 Entry.first = StructType::create(Context, Lex.getStrVal());
1736 Entry.second = Lex.getLoc();
1738 Result = Entry.first;
1743 case lltok::LocalVarID: {
1745 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
1747 // If the type hasn't been defined yet, create a forward definition and
1748 // remember where that forward def'n was seen (in case it never is defined).
1750 Entry.first = StructType::create(Context);
1751 Entry.second = Lex.getLoc();
1753 Result = Entry.first;
1759 // Parse the type suffixes.
1761 switch (Lex.getKind()) {
1764 if (!AllowVoid && Result->isVoidTy())
1765 return Error(TypeLoc, "void type only allowed for function results");
1768 // Type ::= Type '*'
1770 if (Result->isLabelTy())
1771 return TokError("basic block pointers are invalid");
1772 if (Result->isVoidTy())
1773 return TokError("pointers to void are invalid - use i8* instead");
1774 if (!PointerType::isValidElementType(Result))
1775 return TokError("pointer to this type is invalid");
1776 Result = PointerType::getUnqual(Result);
1780 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
1781 case lltok::kw_addrspace: {
1782 if (Result->isLabelTy())
1783 return TokError("basic block pointers are invalid");
1784 if (Result->isVoidTy())
1785 return TokError("pointers to void are invalid; use i8* instead");
1786 if (!PointerType::isValidElementType(Result))
1787 return TokError("pointer to this type is invalid");
1789 if (ParseOptionalAddrSpace(AddrSpace) ||
1790 ParseToken(lltok::star, "expected '*' in address space"))
1793 Result = PointerType::get(Result, AddrSpace);
1797 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1799 if (ParseFunctionType(Result))
1806 /// ParseParameterList
1808 /// ::= '(' Arg (',' Arg)* ')'
1810 /// ::= Type OptionalAttributes Value OptionalAttributes
1811 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1812 PerFunctionState &PFS, bool IsMustTailCall,
1813 bool InVarArgsFunc) {
1814 if (ParseToken(lltok::lparen, "expected '(' in call"))
1817 unsigned AttrIndex = 1;
1818 while (Lex.getKind() != lltok::rparen) {
1819 // If this isn't the first argument, we need a comma.
1820 if (!ArgList.empty() &&
1821 ParseToken(lltok::comma, "expected ',' in argument list"))
1824 // Parse an ellipsis if this is a musttail call in a variadic function.
1825 if (Lex.getKind() == lltok::dotdotdot) {
1826 const char *Msg = "unexpected ellipsis in argument list for ";
1827 if (!IsMustTailCall)
1828 return TokError(Twine(Msg) + "non-musttail call");
1830 return TokError(Twine(Msg) + "musttail call in non-varargs function");
1831 Lex.Lex(); // Lex the '...', it is purely for readability.
1832 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1835 // Parse the argument.
1837 Type *ArgTy = nullptr;
1838 AttrBuilder ArgAttrs;
1840 if (ParseType(ArgTy, ArgLoc))
1843 if (ArgTy->isMetadataTy()) {
1844 if (ParseMetadataAsValue(V, PFS))
1847 // Otherwise, handle normal operands.
1848 if (ParseOptionalParamAttrs(ArgAttrs) || ParseValue(ArgTy, V, PFS))
1851 ArgList.push_back(ParamInfo(ArgLoc, V, AttributeSet::get(V->getContext(),
1856 if (IsMustTailCall && InVarArgsFunc)
1857 return TokError("expected '...' at end of argument list for musttail call "
1858 "in varargs function");
1860 Lex.Lex(); // Lex the ')'.
1866 /// ParseArgumentList - Parse the argument list for a function type or function
1868 /// ::= '(' ArgTypeListI ')'
1872 /// ::= ArgTypeList ',' '...'
1873 /// ::= ArgType (',' ArgType)*
1875 bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
1878 assert(Lex.getKind() == lltok::lparen);
1879 Lex.Lex(); // eat the (.
1881 if (Lex.getKind() == lltok::rparen) {
1883 } else if (Lex.getKind() == lltok::dotdotdot) {
1887 LocTy TypeLoc = Lex.getLoc();
1888 Type *ArgTy = nullptr;
1892 if (ParseType(ArgTy) ||
1893 ParseOptionalParamAttrs(Attrs)) return true;
1895 if (ArgTy->isVoidTy())
1896 return Error(TypeLoc, "argument can not have void type");
1898 if (Lex.getKind() == lltok::LocalVar) {
1899 Name = Lex.getStrVal();
1903 if (!FunctionType::isValidArgumentType(ArgTy))
1904 return Error(TypeLoc, "invalid type for function argument");
1906 unsigned AttrIndex = 1;
1907 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1908 AttributeSet::get(ArgTy->getContext(),
1909 AttrIndex++, Attrs), Name));
1911 while (EatIfPresent(lltok::comma)) {
1912 // Handle ... at end of arg list.
1913 if (EatIfPresent(lltok::dotdotdot)) {
1918 // Otherwise must be an argument type.
1919 TypeLoc = Lex.getLoc();
1920 if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
1922 if (ArgTy->isVoidTy())
1923 return Error(TypeLoc, "argument can not have void type");
1925 if (Lex.getKind() == lltok::LocalVar) {
1926 Name = Lex.getStrVal();
1932 if (!ArgTy->isFirstClassType())
1933 return Error(TypeLoc, "invalid type for function argument");
1935 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1936 AttributeSet::get(ArgTy->getContext(),
1937 AttrIndex++, Attrs),
1942 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1945 /// ParseFunctionType
1946 /// ::= Type ArgumentList OptionalAttrs
1947 bool LLParser::ParseFunctionType(Type *&Result) {
1948 assert(Lex.getKind() == lltok::lparen);
1950 if (!FunctionType::isValidReturnType(Result))
1951 return TokError("invalid function return type");
1953 SmallVector<ArgInfo, 8> ArgList;
1955 if (ParseArgumentList(ArgList, isVarArg))
1958 // Reject names on the arguments lists.
1959 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1960 if (!ArgList[i].Name.empty())
1961 return Error(ArgList[i].Loc, "argument name invalid in function type");
1962 if (ArgList[i].Attrs.hasAttributes(i + 1))
1963 return Error(ArgList[i].Loc,
1964 "argument attributes invalid in function type");
1967 SmallVector<Type*, 16> ArgListTy;
1968 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1969 ArgListTy.push_back(ArgList[i].Ty);
1971 Result = FunctionType::get(Result, ArgListTy, isVarArg);
1975 /// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
1977 bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
1978 SmallVector<Type*, 8> Elts;
1979 if (ParseStructBody(Elts)) return true;
1981 Result = StructType::get(Context, Elts, Packed);
1985 /// ParseStructDefinition - Parse a struct in a 'type' definition.
1986 bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
1987 std::pair<Type*, LocTy> &Entry,
1989 // If the type was already defined, diagnose the redefinition.
1990 if (Entry.first && !Entry.second.isValid())
1991 return Error(TypeLoc, "redefinition of type");
1993 // If we have opaque, just return without filling in the definition for the
1994 // struct. This counts as a definition as far as the .ll file goes.
1995 if (EatIfPresent(lltok::kw_opaque)) {
1996 // This type is being defined, so clear the location to indicate this.
1997 Entry.second = SMLoc();
1999 // If this type number has never been uttered, create it.
2001 Entry.first = StructType::create(Context, Name);
2002 ResultTy = Entry.first;
2006 // If the type starts with '<', then it is either a packed struct or a vector.
2007 bool isPacked = EatIfPresent(lltok::less);
2009 // If we don't have a struct, then we have a random type alias, which we
2010 // accept for compatibility with old files. These types are not allowed to be
2011 // forward referenced and not allowed to be recursive.
2012 if (Lex.getKind() != lltok::lbrace) {
2014 return Error(TypeLoc, "forward references to non-struct type");
2018 return ParseArrayVectorType(ResultTy, true);
2019 return ParseType(ResultTy);
2022 // This type is being defined, so clear the location to indicate this.
2023 Entry.second = SMLoc();
2025 // If this type number has never been uttered, create it.
2027 Entry.first = StructType::create(Context, Name);
2029 StructType *STy = cast<StructType>(Entry.first);
2031 SmallVector<Type*, 8> Body;
2032 if (ParseStructBody(Body) ||
2033 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
2036 STy->setBody(Body, isPacked);
2042 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
2045 /// ::= '{' Type (',' Type)* '}'
2046 /// ::= '<' '{' '}' '>'
2047 /// ::= '<' '{' Type (',' Type)* '}' '>'
2048 bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
2049 assert(Lex.getKind() == lltok::lbrace);
2050 Lex.Lex(); // Consume the '{'
2052 // Handle the empty struct.
2053 if (EatIfPresent(lltok::rbrace))
2056 LocTy EltTyLoc = Lex.getLoc();
2058 if (ParseType(Ty)) return true;
2061 if (!StructType::isValidElementType(Ty))
2062 return Error(EltTyLoc, "invalid element type for struct");
2064 while (EatIfPresent(lltok::comma)) {
2065 EltTyLoc = Lex.getLoc();
2066 if (ParseType(Ty)) return true;
2068 if (!StructType::isValidElementType(Ty))
2069 return Error(EltTyLoc, "invalid element type for struct");
2074 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
2077 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
2078 /// token has already been consumed.
2080 /// ::= '[' APSINTVAL 'x' Types ']'
2081 /// ::= '<' APSINTVAL 'x' Types '>'
2082 bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
2083 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
2084 Lex.getAPSIntVal().getBitWidth() > 64)
2085 return TokError("expected number in address space");
2087 LocTy SizeLoc = Lex.getLoc();
2088 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
2091 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
2094 LocTy TypeLoc = Lex.getLoc();
2095 Type *EltTy = nullptr;
2096 if (ParseType(EltTy)) return true;
2098 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
2099 "expected end of sequential type"))
2104 return Error(SizeLoc, "zero element vector is illegal");
2105 if ((unsigned)Size != Size)
2106 return Error(SizeLoc, "size too large for vector");
2107 if (!VectorType::isValidElementType(EltTy))
2108 return Error(TypeLoc, "invalid vector element type");
2109 Result = VectorType::get(EltTy, unsigned(Size));
2111 if (!ArrayType::isValidElementType(EltTy))
2112 return Error(TypeLoc, "invalid array element type");
2113 Result = ArrayType::get(EltTy, Size);
2118 //===----------------------------------------------------------------------===//
2119 // Function Semantic Analysis.
2120 //===----------------------------------------------------------------------===//
2122 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
2124 : P(p), F(f), FunctionNumber(functionNumber) {
2126 // Insert unnamed arguments into the NumberedVals list.
2127 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
2130 NumberedVals.push_back(AI);
2133 LLParser::PerFunctionState::~PerFunctionState() {
2134 // If there were any forward referenced non-basicblock values, delete them.
2135 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
2136 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
2137 if (!isa<BasicBlock>(I->second.first)) {
2138 I->second.first->replaceAllUsesWith(
2139 UndefValue::get(I->second.first->getType()));
2140 delete I->second.first;
2141 I->second.first = nullptr;
2144 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2145 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
2146 if (!isa<BasicBlock>(I->second.first)) {
2147 I->second.first->replaceAllUsesWith(
2148 UndefValue::get(I->second.first->getType()));
2149 delete I->second.first;
2150 I->second.first = nullptr;
2154 bool LLParser::PerFunctionState::FinishFunction() {
2155 if (!ForwardRefVals.empty())
2156 return P.Error(ForwardRefVals.begin()->second.second,
2157 "use of undefined value '%" + ForwardRefVals.begin()->first +
2159 if (!ForwardRefValIDs.empty())
2160 return P.Error(ForwardRefValIDs.begin()->second.second,
2161 "use of undefined value '%" +
2162 Twine(ForwardRefValIDs.begin()->first) + "'");
2167 /// GetVal - Get a value with the specified name or ID, creating a
2168 /// forward reference record if needed. This can return null if the value
2169 /// exists but does not have the right type.
2170 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
2171 Type *Ty, LocTy Loc) {
2172 // Look this name up in the normal function symbol table.
2173 Value *Val = F.getValueSymbolTable().lookup(Name);
2175 // If this is a forward reference for the value, see if we already created a
2176 // forward ref record.
2178 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2179 I = ForwardRefVals.find(Name);
2180 if (I != ForwardRefVals.end())
2181 Val = I->second.first;
2184 // If we have the value in the symbol table or fwd-ref table, return it.
2186 if (Val->getType() == Ty) return Val;
2187 if (Ty->isLabelTy())
2188 P.Error(Loc, "'%" + Name + "' is not a basic block");
2190 P.Error(Loc, "'%" + Name + "' defined with type '" +
2191 getTypeString(Val->getType()) + "'");
2195 // Don't make placeholders with invalid type.
2196 if (!Ty->isFirstClassType()) {
2197 P.Error(Loc, "invalid use of a non-first-class type");
2201 // Otherwise, create a new forward reference for this value and remember it.
2203 if (Ty->isLabelTy())
2204 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2206 FwdVal = new Argument(Ty, Name);
2208 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2212 Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty,
2214 // Look this name up in the normal function symbol table.
2215 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
2217 // If this is a forward reference for the value, see if we already created a
2218 // forward ref record.
2220 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2221 I = ForwardRefValIDs.find(ID);
2222 if (I != ForwardRefValIDs.end())
2223 Val = I->second.first;
2226 // If we have the value in the symbol table or fwd-ref table, return it.
2228 if (Val->getType() == Ty) return Val;
2229 if (Ty->isLabelTy())
2230 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
2232 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
2233 getTypeString(Val->getType()) + "'");
2237 if (!Ty->isFirstClassType()) {
2238 P.Error(Loc, "invalid use of a non-first-class type");
2242 // Otherwise, create a new forward reference for this value and remember it.
2244 if (Ty->isLabelTy())
2245 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2247 FwdVal = new Argument(Ty);
2249 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2253 /// SetInstName - After an instruction is parsed and inserted into its
2254 /// basic block, this installs its name.
2255 bool LLParser::PerFunctionState::SetInstName(int NameID,
2256 const std::string &NameStr,
2257 LocTy NameLoc, Instruction *Inst) {
2258 // If this instruction has void type, it cannot have a name or ID specified.
2259 if (Inst->getType()->isVoidTy()) {
2260 if (NameID != -1 || !NameStr.empty())
2261 return P.Error(NameLoc, "instructions returning void cannot have a name");
2265 // If this was a numbered instruction, verify that the instruction is the
2266 // expected value and resolve any forward references.
2267 if (NameStr.empty()) {
2268 // If neither a name nor an ID was specified, just use the next ID.
2270 NameID = NumberedVals.size();
2272 if (unsigned(NameID) != NumberedVals.size())
2273 return P.Error(NameLoc, "instruction expected to be numbered '%" +
2274 Twine(NumberedVals.size()) + "'");
2276 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
2277 ForwardRefValIDs.find(NameID);
2278 if (FI != ForwardRefValIDs.end()) {
2279 if (FI->second.first->getType() != Inst->getType())
2280 return P.Error(NameLoc, "instruction forward referenced with type '" +
2281 getTypeString(FI->second.first->getType()) + "'");
2282 FI->second.first->replaceAllUsesWith(Inst);
2283 delete FI->second.first;
2284 ForwardRefValIDs.erase(FI);
2287 NumberedVals.push_back(Inst);
2291 // Otherwise, the instruction had a name. Resolve forward refs and set it.
2292 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2293 FI = ForwardRefVals.find(NameStr);
2294 if (FI != ForwardRefVals.end()) {
2295 if (FI->second.first->getType() != Inst->getType())
2296 return P.Error(NameLoc, "instruction forward referenced with type '" +
2297 getTypeString(FI->second.first->getType()) + "'");
2298 FI->second.first->replaceAllUsesWith(Inst);
2299 delete FI->second.first;
2300 ForwardRefVals.erase(FI);
2303 // Set the name on the instruction.
2304 Inst->setName(NameStr);
2306 if (Inst->getName() != NameStr)
2307 return P.Error(NameLoc, "multiple definition of local value named '" +
2312 /// GetBB - Get a basic block with the specified name or ID, creating a
2313 /// forward reference record if needed.
2314 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2316 return dyn_cast_or_null<BasicBlock>(GetVal(Name,
2317 Type::getLabelTy(F.getContext()), Loc));
2320 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2321 return dyn_cast_or_null<BasicBlock>(GetVal(ID,
2322 Type::getLabelTy(F.getContext()), Loc));
2325 /// DefineBB - Define the specified basic block, which is either named or
2326 /// unnamed. If there is an error, this returns null otherwise it returns
2327 /// the block being defined.
2328 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2332 BB = GetBB(NumberedVals.size(), Loc);
2334 BB = GetBB(Name, Loc);
2335 if (!BB) return nullptr; // Already diagnosed error.
2337 // Move the block to the end of the function. Forward ref'd blocks are
2338 // inserted wherever they happen to be referenced.
2339 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2341 // Remove the block from forward ref sets.
2343 ForwardRefValIDs.erase(NumberedVals.size());
2344 NumberedVals.push_back(BB);
2346 // BB forward references are already in the function symbol table.
2347 ForwardRefVals.erase(Name);
2353 //===----------------------------------------------------------------------===//
2355 //===----------------------------------------------------------------------===//
2357 /// ParseValID - Parse an abstract value that doesn't necessarily have a
2358 /// type implied. For example, if we parse "4" we don't know what integer type
2359 /// it has. The value will later be combined with its type and checked for
2360 /// sanity. PFS is used to convert function-local operands of metadata (since
2361 /// metadata operands are not just parsed here but also converted to values).
2362 /// PFS can be null when we are not parsing metadata values inside a function.
2363 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2364 ID.Loc = Lex.getLoc();
2365 switch (Lex.getKind()) {
2366 default: return TokError("expected value token");
2367 case lltok::GlobalID: // @42
2368 ID.UIntVal = Lex.getUIntVal();
2369 ID.Kind = ValID::t_GlobalID;
2371 case lltok::GlobalVar: // @foo
2372 ID.StrVal = Lex.getStrVal();
2373 ID.Kind = ValID::t_GlobalName;
2375 case lltok::LocalVarID: // %42
2376 ID.UIntVal = Lex.getUIntVal();
2377 ID.Kind = ValID::t_LocalID;
2379 case lltok::LocalVar: // %foo
2380 ID.StrVal = Lex.getStrVal();
2381 ID.Kind = ValID::t_LocalName;
2384 ID.APSIntVal = Lex.getAPSIntVal();
2385 ID.Kind = ValID::t_APSInt;
2387 case lltok::APFloat:
2388 ID.APFloatVal = Lex.getAPFloatVal();
2389 ID.Kind = ValID::t_APFloat;
2391 case lltok::kw_true:
2392 ID.ConstantVal = ConstantInt::getTrue(Context);
2393 ID.Kind = ValID::t_Constant;
2395 case lltok::kw_false:
2396 ID.ConstantVal = ConstantInt::getFalse(Context);
2397 ID.Kind = ValID::t_Constant;
2399 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2400 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2401 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2403 case lltok::lbrace: {
2404 // ValID ::= '{' ConstVector '}'
2406 SmallVector<Constant*, 16> Elts;
2407 if (ParseGlobalValueVector(Elts) ||
2408 ParseToken(lltok::rbrace, "expected end of struct constant"))
2411 ID.ConstantStructElts = new Constant*[Elts.size()];
2412 ID.UIntVal = Elts.size();
2413 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2414 ID.Kind = ValID::t_ConstantStruct;
2418 // ValID ::= '<' ConstVector '>' --> Vector.
2419 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2421 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2423 SmallVector<Constant*, 16> Elts;
2424 LocTy FirstEltLoc = Lex.getLoc();
2425 if (ParseGlobalValueVector(Elts) ||
2427 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2428 ParseToken(lltok::greater, "expected end of constant"))
2431 if (isPackedStruct) {
2432 ID.ConstantStructElts = new Constant*[Elts.size()];
2433 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2434 ID.UIntVal = Elts.size();
2435 ID.Kind = ValID::t_PackedConstantStruct;
2440 return Error(ID.Loc, "constant vector must not be empty");
2442 if (!Elts[0]->getType()->isIntegerTy() &&
2443 !Elts[0]->getType()->isFloatingPointTy() &&
2444 !Elts[0]->getType()->isPointerTy())
2445 return Error(FirstEltLoc,
2446 "vector elements must have integer, pointer or floating point type");
2448 // Verify that all the vector elements have the same type.
2449 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2450 if (Elts[i]->getType() != Elts[0]->getType())
2451 return Error(FirstEltLoc,
2452 "vector element #" + Twine(i) +
2453 " is not of type '" + getTypeString(Elts[0]->getType()));
2455 ID.ConstantVal = ConstantVector::get(Elts);
2456 ID.Kind = ValID::t_Constant;
2459 case lltok::lsquare: { // Array Constant
2461 SmallVector<Constant*, 16> Elts;
2462 LocTy FirstEltLoc = Lex.getLoc();
2463 if (ParseGlobalValueVector(Elts) ||
2464 ParseToken(lltok::rsquare, "expected end of array constant"))
2467 // Handle empty element.
2469 // Use undef instead of an array because it's inconvenient to determine
2470 // the element type at this point, there being no elements to examine.
2471 ID.Kind = ValID::t_EmptyArray;
2475 if (!Elts[0]->getType()->isFirstClassType())
2476 return Error(FirstEltLoc, "invalid array element type: " +
2477 getTypeString(Elts[0]->getType()));
2479 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2481 // Verify all elements are correct type!
2482 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2483 if (Elts[i]->getType() != Elts[0]->getType())
2484 return Error(FirstEltLoc,
2485 "array element #" + Twine(i) +
2486 " is not of type '" + getTypeString(Elts[0]->getType()));
2489 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2490 ID.Kind = ValID::t_Constant;
2493 case lltok::kw_c: // c "foo"
2495 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2497 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2498 ID.Kind = ValID::t_Constant;
2501 case lltok::kw_asm: {
2502 // ValID ::= 'asm' SideEffect? AlignStack? IntelDialect? STRINGCONSTANT ','
2504 bool HasSideEffect, AlignStack, AsmDialect;
2506 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2507 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2508 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2509 ParseStringConstant(ID.StrVal) ||
2510 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2511 ParseToken(lltok::StringConstant, "expected constraint string"))
2513 ID.StrVal2 = Lex.getStrVal();
2514 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2515 (unsigned(AsmDialect)<<2);
2516 ID.Kind = ValID::t_InlineAsm;
2520 case lltok::kw_blockaddress: {
2521 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2526 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2528 ParseToken(lltok::comma, "expected comma in block address expression")||
2529 ParseValID(Label) ||
2530 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2533 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2534 return Error(Fn.Loc, "expected function name in blockaddress");
2535 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2536 return Error(Label.Loc, "expected basic block name in blockaddress");
2538 // Try to find the function (but skip it if it's forward-referenced).
2539 GlobalValue *GV = nullptr;
2540 if (Fn.Kind == ValID::t_GlobalID) {
2541 if (Fn.UIntVal < NumberedVals.size())
2542 GV = NumberedVals[Fn.UIntVal];
2543 } else if (!ForwardRefVals.count(Fn.StrVal)) {
2544 GV = M->getNamedValue(Fn.StrVal);
2546 Function *F = nullptr;
2548 // Confirm that it's actually a function with a definition.
2549 if (!isa<Function>(GV))
2550 return Error(Fn.Loc, "expected function name in blockaddress");
2551 F = cast<Function>(GV);
2552 if (F->isDeclaration())
2553 return Error(Fn.Loc, "cannot take blockaddress inside a declaration");
2557 // Make a global variable as a placeholder for this reference.
2558 GlobalValue *&FwdRef =
2559 ForwardRefBlockAddresses.insert(std::make_pair(
2561 std::map<ValID, GlobalValue *>()))
2562 .first->second.insert(std::make_pair(std::move(Label), nullptr))
2565 FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context), false,
2566 GlobalValue::InternalLinkage, nullptr, "");
2567 ID.ConstantVal = FwdRef;
2568 ID.Kind = ValID::t_Constant;
2572 // We found the function; now find the basic block. Don't use PFS, since we
2573 // might be inside a constant expression.
2575 if (BlockAddressPFS && F == &BlockAddressPFS->getFunction()) {
2576 if (Label.Kind == ValID::t_LocalID)
2577 BB = BlockAddressPFS->GetBB(Label.UIntVal, Label.Loc);
2579 BB = BlockAddressPFS->GetBB(Label.StrVal, Label.Loc);
2581 return Error(Label.Loc, "referenced value is not a basic block");
2583 if (Label.Kind == ValID::t_LocalID)
2584 return Error(Label.Loc, "cannot take address of numeric label after "
2585 "the function is defined");
2586 BB = dyn_cast_or_null<BasicBlock>(
2587 F->getValueSymbolTable().lookup(Label.StrVal));
2589 return Error(Label.Loc, "referenced value is not a basic block");
2592 ID.ConstantVal = BlockAddress::get(F, BB);
2593 ID.Kind = ValID::t_Constant;
2597 case lltok::kw_trunc:
2598 case lltok::kw_zext:
2599 case lltok::kw_sext:
2600 case lltok::kw_fptrunc:
2601 case lltok::kw_fpext:
2602 case lltok::kw_bitcast:
2603 case lltok::kw_addrspacecast:
2604 case lltok::kw_uitofp:
2605 case lltok::kw_sitofp:
2606 case lltok::kw_fptoui:
2607 case lltok::kw_fptosi:
2608 case lltok::kw_inttoptr:
2609 case lltok::kw_ptrtoint: {
2610 unsigned Opc = Lex.getUIntVal();
2611 Type *DestTy = nullptr;
2614 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2615 ParseGlobalTypeAndValue(SrcVal) ||
2616 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2617 ParseType(DestTy) ||
2618 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2620 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2621 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2622 getTypeString(SrcVal->getType()) + "' to '" +
2623 getTypeString(DestTy) + "'");
2624 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2626 ID.Kind = ValID::t_Constant;
2629 case lltok::kw_extractvalue: {
2632 SmallVector<unsigned, 4> Indices;
2633 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2634 ParseGlobalTypeAndValue(Val) ||
2635 ParseIndexList(Indices) ||
2636 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2639 if (!Val->getType()->isAggregateType())
2640 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2641 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
2642 return Error(ID.Loc, "invalid indices for extractvalue");
2643 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
2644 ID.Kind = ValID::t_Constant;
2647 case lltok::kw_insertvalue: {
2649 Constant *Val0, *Val1;
2650 SmallVector<unsigned, 4> Indices;
2651 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2652 ParseGlobalTypeAndValue(Val0) ||
2653 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2654 ParseGlobalTypeAndValue(Val1) ||
2655 ParseIndexList(Indices) ||
2656 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2658 if (!Val0->getType()->isAggregateType())
2659 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2661 ExtractValueInst::getIndexedType(Val0->getType(), Indices);
2663 return Error(ID.Loc, "invalid indices for insertvalue");
2664 if (IndexedType != Val1->getType())
2665 return Error(ID.Loc, "insertvalue operand and field disagree in type: '" +
2666 getTypeString(Val1->getType()) +
2667 "' instead of '" + getTypeString(IndexedType) +
2669 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
2670 ID.Kind = ValID::t_Constant;
2673 case lltok::kw_icmp:
2674 case lltok::kw_fcmp: {
2675 unsigned PredVal, Opc = Lex.getUIntVal();
2676 Constant *Val0, *Val1;
2678 if (ParseCmpPredicate(PredVal, Opc) ||
2679 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2680 ParseGlobalTypeAndValue(Val0) ||
2681 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2682 ParseGlobalTypeAndValue(Val1) ||
2683 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2686 if (Val0->getType() != Val1->getType())
2687 return Error(ID.Loc, "compare operands must have the same type");
2689 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2691 if (Opc == Instruction::FCmp) {
2692 if (!Val0->getType()->isFPOrFPVectorTy())
2693 return Error(ID.Loc, "fcmp requires floating point operands");
2694 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2696 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2697 if (!Val0->getType()->isIntOrIntVectorTy() &&
2698 !Val0->getType()->getScalarType()->isPointerTy())
2699 return Error(ID.Loc, "icmp requires pointer or integer operands");
2700 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2702 ID.Kind = ValID::t_Constant;
2706 // Binary Operators.
2708 case lltok::kw_fadd:
2710 case lltok::kw_fsub:
2712 case lltok::kw_fmul:
2713 case lltok::kw_udiv:
2714 case lltok::kw_sdiv:
2715 case lltok::kw_fdiv:
2716 case lltok::kw_urem:
2717 case lltok::kw_srem:
2718 case lltok::kw_frem:
2720 case lltok::kw_lshr:
2721 case lltok::kw_ashr: {
2725 unsigned Opc = Lex.getUIntVal();
2726 Constant *Val0, *Val1;
2728 LocTy ModifierLoc = Lex.getLoc();
2729 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
2730 Opc == Instruction::Mul || Opc == Instruction::Shl) {
2731 if (EatIfPresent(lltok::kw_nuw))
2733 if (EatIfPresent(lltok::kw_nsw)) {
2735 if (EatIfPresent(lltok::kw_nuw))
2738 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
2739 Opc == Instruction::LShr || Opc == Instruction::AShr) {
2740 if (EatIfPresent(lltok::kw_exact))
2743 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2744 ParseGlobalTypeAndValue(Val0) ||
2745 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2746 ParseGlobalTypeAndValue(Val1) ||
2747 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2749 if (Val0->getType() != Val1->getType())
2750 return Error(ID.Loc, "operands of constexpr must have same type");
2751 if (!Val0->getType()->isIntOrIntVectorTy()) {
2753 return Error(ModifierLoc, "nuw only applies to integer operations");
2755 return Error(ModifierLoc, "nsw only applies to integer operations");
2757 // Check that the type is valid for the operator.
2759 case Instruction::Add:
2760 case Instruction::Sub:
2761 case Instruction::Mul:
2762 case Instruction::UDiv:
2763 case Instruction::SDiv:
2764 case Instruction::URem:
2765 case Instruction::SRem:
2766 case Instruction::Shl:
2767 case Instruction::AShr:
2768 case Instruction::LShr:
2769 if (!Val0->getType()->isIntOrIntVectorTy())
2770 return Error(ID.Loc, "constexpr requires integer operands");
2772 case Instruction::FAdd:
2773 case Instruction::FSub:
2774 case Instruction::FMul:
2775 case Instruction::FDiv:
2776 case Instruction::FRem:
2777 if (!Val0->getType()->isFPOrFPVectorTy())
2778 return Error(ID.Loc, "constexpr requires fp operands");
2780 default: llvm_unreachable("Unknown binary operator!");
2783 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2784 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2785 if (Exact) Flags |= PossiblyExactOperator::IsExact;
2786 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2788 ID.Kind = ValID::t_Constant;
2792 // Logical Operations
2795 case lltok::kw_xor: {
2796 unsigned Opc = Lex.getUIntVal();
2797 Constant *Val0, *Val1;
2799 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2800 ParseGlobalTypeAndValue(Val0) ||
2801 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2802 ParseGlobalTypeAndValue(Val1) ||
2803 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2805 if (Val0->getType() != Val1->getType())
2806 return Error(ID.Loc, "operands of constexpr must have same type");
2807 if (!Val0->getType()->isIntOrIntVectorTy())
2808 return Error(ID.Loc,
2809 "constexpr requires integer or integer vector operands");
2810 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2811 ID.Kind = ValID::t_Constant;
2815 case lltok::kw_getelementptr:
2816 case lltok::kw_shufflevector:
2817 case lltok::kw_insertelement:
2818 case lltok::kw_extractelement:
2819 case lltok::kw_select: {
2820 unsigned Opc = Lex.getUIntVal();
2821 SmallVector<Constant*, 16> Elts;
2822 bool InBounds = false;
2826 if (Opc == Instruction::GetElementPtr)
2827 InBounds = EatIfPresent(lltok::kw_inbounds);
2829 if (ParseToken(lltok::lparen, "expected '(' in constantexpr"))
2832 LocTy ExplicitTypeLoc = Lex.getLoc();
2833 if (Opc == Instruction::GetElementPtr) {
2834 if (ParseType(Ty) ||
2835 ParseToken(lltok::comma, "expected comma after getelementptr's type"))
2839 if (ParseGlobalValueVector(Elts) ||
2840 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2843 if (Opc == Instruction::GetElementPtr) {
2844 if (Elts.size() == 0 ||
2845 !Elts[0]->getType()->getScalarType()->isPointerTy())
2846 return Error(ID.Loc, "base of getelementptr must be a pointer");
2848 Type *BaseType = Elts[0]->getType();
2849 auto *BasePointerType = cast<PointerType>(BaseType->getScalarType());
2850 if (Ty != BasePointerType->getElementType())
2853 "explicit pointee type doesn't match operand's pointee type");
2855 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
2856 for (Constant *Val : Indices) {
2857 Type *ValTy = Val->getType();
2858 if (!ValTy->getScalarType()->isIntegerTy())
2859 return Error(ID.Loc, "getelementptr index must be an integer");
2860 if (ValTy->isVectorTy() != BaseType->isVectorTy())
2861 return Error(ID.Loc, "getelementptr index type missmatch");
2862 if (ValTy->isVectorTy()) {
2863 unsigned ValNumEl = cast<VectorType>(ValTy)->getNumElements();
2864 unsigned PtrNumEl = cast<VectorType>(BaseType)->getNumElements();
2865 if (ValNumEl != PtrNumEl)
2868 "getelementptr vector index has a wrong number of elements");
2872 SmallPtrSet<const Type*, 4> Visited;
2873 if (!Indices.empty() && !Ty->isSized(&Visited))
2874 return Error(ID.Loc, "base element of getelementptr must be sized");
2876 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
2877 return Error(ID.Loc, "invalid getelementptr indices");
2879 ConstantExpr::getGetElementPtr(Ty, Elts[0], Indices, InBounds);
2880 } else if (Opc == Instruction::Select) {
2881 if (Elts.size() != 3)
2882 return Error(ID.Loc, "expected three operands to select");
2883 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2885 return Error(ID.Loc, Reason);
2886 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2887 } else if (Opc == Instruction::ShuffleVector) {
2888 if (Elts.size() != 3)
2889 return Error(ID.Loc, "expected three operands to shufflevector");
2890 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2891 return Error(ID.Loc, "invalid operands to shufflevector");
2893 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2894 } else if (Opc == Instruction::ExtractElement) {
2895 if (Elts.size() != 2)
2896 return Error(ID.Loc, "expected two operands to extractelement");
2897 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2898 return Error(ID.Loc, "invalid extractelement operands");
2899 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2901 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2902 if (Elts.size() != 3)
2903 return Error(ID.Loc, "expected three operands to insertelement");
2904 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2905 return Error(ID.Loc, "invalid insertelement operands");
2907 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2910 ID.Kind = ValID::t_Constant;
2919 /// ParseGlobalValue - Parse a global value with the specified type.
2920 bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
2924 bool Parsed = ParseValID(ID) ||
2925 ConvertValIDToValue(Ty, ID, V, nullptr);
2926 if (V && !(C = dyn_cast<Constant>(V)))
2927 return Error(ID.Loc, "global values must be constants");
2931 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2933 return ParseType(Ty) ||
2934 ParseGlobalValue(Ty, V);
2937 bool LLParser::parseOptionalComdat(StringRef GlobalName, Comdat *&C) {
2940 LocTy KwLoc = Lex.getLoc();
2941 if (!EatIfPresent(lltok::kw_comdat))
2944 if (EatIfPresent(lltok::lparen)) {
2945 if (Lex.getKind() != lltok::ComdatVar)
2946 return TokError("expected comdat variable");
2947 C = getComdat(Lex.getStrVal(), Lex.getLoc());
2949 if (ParseToken(lltok::rparen, "expected ')' after comdat var"))
2952 if (GlobalName.empty())
2953 return TokError("comdat cannot be unnamed");
2954 C = getComdat(GlobalName, KwLoc);
2960 /// ParseGlobalValueVector
2962 /// ::= TypeAndValue (',' TypeAndValue)*
2963 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant *> &Elts) {
2965 if (Lex.getKind() == lltok::rbrace ||
2966 Lex.getKind() == lltok::rsquare ||
2967 Lex.getKind() == lltok::greater ||
2968 Lex.getKind() == lltok::rparen)
2972 if (ParseGlobalTypeAndValue(C)) return true;
2975 while (EatIfPresent(lltok::comma)) {
2976 if (ParseGlobalTypeAndValue(C)) return true;
2983 bool LLParser::ParseMDTuple(MDNode *&MD, bool IsDistinct) {
2984 SmallVector<Metadata *, 16> Elts;
2985 if (ParseMDNodeVector(Elts))
2988 MD = (IsDistinct ? MDTuple::getDistinct : MDTuple::get)(Context, Elts);
2995 /// ::= !DILocation(...)
2996 bool LLParser::ParseMDNode(MDNode *&N) {
2997 if (Lex.getKind() == lltok::MetadataVar)
2998 return ParseSpecializedMDNode(N);
3000 return ParseToken(lltok::exclaim, "expected '!' here") ||
3004 bool LLParser::ParseMDNodeTail(MDNode *&N) {
3006 if (Lex.getKind() == lltok::lbrace)
3007 return ParseMDTuple(N);
3010 return ParseMDNodeID(N);
3015 /// Structure to represent an optional metadata field.
3016 template <class FieldTy> struct MDFieldImpl {
3017 typedef MDFieldImpl ImplTy;
3021 void assign(FieldTy Val) {
3023 this->Val = std::move(Val);
3026 explicit MDFieldImpl(FieldTy Default)
3027 : Val(std::move(Default)), Seen(false) {}
3030 struct MDUnsignedField : public MDFieldImpl<uint64_t> {
3033 MDUnsignedField(uint64_t Default = 0, uint64_t Max = UINT64_MAX)
3034 : ImplTy(Default), Max(Max) {}
3036 struct LineField : public MDUnsignedField {
3037 LineField() : MDUnsignedField(0, UINT32_MAX) {}
3039 struct ColumnField : public MDUnsignedField {
3040 ColumnField() : MDUnsignedField(0, UINT16_MAX) {}
3042 struct DwarfTagField : public MDUnsignedField {
3043 DwarfTagField() : MDUnsignedField(0, dwarf::DW_TAG_hi_user) {}
3044 DwarfTagField(dwarf::Tag DefaultTag)
3045 : MDUnsignedField(DefaultTag, dwarf::DW_TAG_hi_user) {}
3047 struct DwarfAttEncodingField : public MDUnsignedField {
3048 DwarfAttEncodingField() : MDUnsignedField(0, dwarf::DW_ATE_hi_user) {}
3050 struct DwarfVirtualityField : public MDUnsignedField {
3051 DwarfVirtualityField() : MDUnsignedField(0, dwarf::DW_VIRTUALITY_max) {}
3053 struct DwarfLangField : public MDUnsignedField {
3054 DwarfLangField() : MDUnsignedField(0, dwarf::DW_LANG_hi_user) {}
3057 struct DIFlagField : public MDUnsignedField {
3058 DIFlagField() : MDUnsignedField(0, UINT32_MAX) {}
3061 struct MDSignedField : public MDFieldImpl<int64_t> {
3065 MDSignedField(int64_t Default = 0)
3066 : ImplTy(Default), Min(INT64_MIN), Max(INT64_MAX) {}
3067 MDSignedField(int64_t Default, int64_t Min, int64_t Max)
3068 : ImplTy(Default), Min(Min), Max(Max) {}
3071 struct MDBoolField : public MDFieldImpl<bool> {
3072 MDBoolField(bool Default = false) : ImplTy(Default) {}
3074 struct MDField : public MDFieldImpl<Metadata *> {
3077 MDField(bool AllowNull = true) : ImplTy(nullptr), AllowNull(AllowNull) {}
3079 struct MDConstant : public MDFieldImpl<ConstantAsMetadata *> {
3080 MDConstant() : ImplTy(nullptr) {}
3082 struct MDStringField : public MDFieldImpl<MDString *> {
3084 MDStringField(bool AllowEmpty = true)
3085 : ImplTy(nullptr), AllowEmpty(AllowEmpty) {}
3087 struct MDFieldList : public MDFieldImpl<SmallVector<Metadata *, 4>> {
3088 MDFieldList() : ImplTy(SmallVector<Metadata *, 4>()) {}
3096 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3097 MDUnsignedField &Result) {
3098 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
3099 return TokError("expected unsigned integer");
3101 auto &U = Lex.getAPSIntVal();
3102 if (U.ugt(Result.Max))
3103 return TokError("value for '" + Name + "' too large, limit is " +
3105 Result.assign(U.getZExtValue());
3106 assert(Result.Val <= Result.Max && "Expected value in range");
3112 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, LineField &Result) {
3113 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3116 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, ColumnField &Result) {
3117 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3121 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfTagField &Result) {
3122 if (Lex.getKind() == lltok::APSInt)
3123 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3125 if (Lex.getKind() != lltok::DwarfTag)
3126 return TokError("expected DWARF tag");
3128 unsigned Tag = dwarf::getTag(Lex.getStrVal());
3129 if (Tag == dwarf::DW_TAG_invalid)
3130 return TokError("invalid DWARF tag" + Twine(" '") + Lex.getStrVal() + "'");
3131 assert(Tag <= Result.Max && "Expected valid DWARF tag");
3139 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3140 DwarfVirtualityField &Result) {
3141 if (Lex.getKind() == lltok::APSInt)
3142 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3144 if (Lex.getKind() != lltok::DwarfVirtuality)
3145 return TokError("expected DWARF virtuality code");
3147 unsigned Virtuality = dwarf::getVirtuality(Lex.getStrVal());
3149 return TokError("invalid DWARF virtuality code" + Twine(" '") +
3150 Lex.getStrVal() + "'");
3151 assert(Virtuality <= Result.Max && "Expected valid DWARF virtuality code");
3152 Result.assign(Virtuality);
3158 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfLangField &Result) {
3159 if (Lex.getKind() == lltok::APSInt)
3160 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3162 if (Lex.getKind() != lltok::DwarfLang)
3163 return TokError("expected DWARF language");
3165 unsigned Lang = dwarf::getLanguage(Lex.getStrVal());
3167 return TokError("invalid DWARF language" + Twine(" '") + Lex.getStrVal() +
3169 assert(Lang <= Result.Max && "Expected valid DWARF language");
3170 Result.assign(Lang);
3176 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3177 DwarfAttEncodingField &Result) {
3178 if (Lex.getKind() == lltok::APSInt)
3179 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3181 if (Lex.getKind() != lltok::DwarfAttEncoding)
3182 return TokError("expected DWARF type attribute encoding");
3184 unsigned Encoding = dwarf::getAttributeEncoding(Lex.getStrVal());
3186 return TokError("invalid DWARF type attribute encoding" + Twine(" '") +
3187 Lex.getStrVal() + "'");
3188 assert(Encoding <= Result.Max && "Expected valid DWARF language");
3189 Result.assign(Encoding);
3196 /// ::= DIFlagVector
3197 /// ::= DIFlagVector '|' DIFlagFwdDecl '|' uint32 '|' DIFlagPublic
3199 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DIFlagField &Result) {
3200 assert(Result.Max == UINT32_MAX && "Expected only 32-bits");
3202 // Parser for a single flag.
3203 auto parseFlag = [&](unsigned &Val) {
3204 if (Lex.getKind() == lltok::APSInt && !Lex.getAPSIntVal().isSigned())
3205 return ParseUInt32(Val);
3207 if (Lex.getKind() != lltok::DIFlag)
3208 return TokError("expected debug info flag");
3210 Val = DINode::getFlag(Lex.getStrVal());
3212 return TokError(Twine("invalid debug info flag flag '") +
3213 Lex.getStrVal() + "'");
3218 // Parse the flags and combine them together.
3219 unsigned Combined = 0;
3225 } while (EatIfPresent(lltok::bar));
3227 Result.assign(Combined);
3232 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3233 MDSignedField &Result) {
3234 if (Lex.getKind() != lltok::APSInt)
3235 return TokError("expected signed integer");
3237 auto &S = Lex.getAPSIntVal();
3239 return TokError("value for '" + Name + "' too small, limit is " +
3242 return TokError("value for '" + Name + "' too large, limit is " +
3244 Result.assign(S.getExtValue());
3245 assert(Result.Val >= Result.Min && "Expected value in range");
3246 assert(Result.Val <= Result.Max && "Expected value in range");
3252 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDBoolField &Result) {
3253 switch (Lex.getKind()) {
3255 return TokError("expected 'true' or 'false'");
3256 case lltok::kw_true:
3257 Result.assign(true);
3259 case lltok::kw_false:
3260 Result.assign(false);
3268 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDField &Result) {
3269 if (Lex.getKind() == lltok::kw_null) {
3270 if (!Result.AllowNull)
3271 return TokError("'" + Name + "' cannot be null");
3273 Result.assign(nullptr);
3278 if (ParseMetadata(MD, nullptr))
3286 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDConstant &Result) {
3288 if (ParseValueAsMetadata(MD, "expected constant", nullptr))
3291 Result.assign(cast<ConstantAsMetadata>(MD));
3296 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDStringField &Result) {
3297 LocTy ValueLoc = Lex.getLoc();
3299 if (ParseStringConstant(S))
3302 if (!Result.AllowEmpty && S.empty())
3303 return Error(ValueLoc, "'" + Name + "' cannot be empty");
3305 Result.assign(S.empty() ? nullptr : MDString::get(Context, S));
3310 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDFieldList &Result) {
3311 SmallVector<Metadata *, 4> MDs;
3312 if (ParseMDNodeVector(MDs))
3315 Result.assign(std::move(MDs));
3319 } // end namespace llvm
3321 template <class ParserTy>
3322 bool LLParser::ParseMDFieldsImplBody(ParserTy parseField) {
3324 if (Lex.getKind() != lltok::LabelStr)
3325 return TokError("expected field label here");
3329 } while (EatIfPresent(lltok::comma));
3334 template <class ParserTy>
3335 bool LLParser::ParseMDFieldsImpl(ParserTy parseField, LocTy &ClosingLoc) {
3336 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3339 if (ParseToken(lltok::lparen, "expected '(' here"))
3341 if (Lex.getKind() != lltok::rparen)
3342 if (ParseMDFieldsImplBody(parseField))
3345 ClosingLoc = Lex.getLoc();
3346 return ParseToken(lltok::rparen, "expected ')' here");
3349 template <class FieldTy>
3350 bool LLParser::ParseMDField(StringRef Name, FieldTy &Result) {
3352 return TokError("field '" + Name + "' cannot be specified more than once");
3354 LocTy Loc = Lex.getLoc();
3356 return ParseMDField(Loc, Name, Result);
3359 bool LLParser::ParseSpecializedMDNode(MDNode *&N, bool IsDistinct) {
3360 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3362 #define HANDLE_SPECIALIZED_MDNODE_LEAF(CLASS) \
3363 if (Lex.getStrVal() == #CLASS) \
3364 return Parse##CLASS(N, IsDistinct);
3365 #include "llvm/IR/Metadata.def"
3367 return TokError("expected metadata type");
3370 #define DECLARE_FIELD(NAME, TYPE, INIT) TYPE NAME INIT
3371 #define NOP_FIELD(NAME, TYPE, INIT)
3372 #define REQUIRE_FIELD(NAME, TYPE, INIT) \
3374 return Error(ClosingLoc, "missing required field '" #NAME "'");
3375 #define PARSE_MD_FIELD(NAME, TYPE, DEFAULT) \
3376 if (Lex.getStrVal() == #NAME) \
3377 return ParseMDField(#NAME, NAME);
3378 #define PARSE_MD_FIELDS() \
3379 VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) \
3382 if (ParseMDFieldsImpl([&]() -> bool { \
3383 VISIT_MD_FIELDS(PARSE_MD_FIELD, PARSE_MD_FIELD) \
3384 return TokError(Twine("invalid field '") + Lex.getStrVal() + "'"); \
3387 VISIT_MD_FIELDS(NOP_FIELD, REQUIRE_FIELD) \
3389 #define GET_OR_DISTINCT(CLASS, ARGS) \
3390 (IsDistinct ? CLASS::getDistinct ARGS : CLASS::get ARGS)
3392 /// ParseDILocationFields:
3393 /// ::= !DILocation(line: 43, column: 8, scope: !5, inlinedAt: !6)
3394 bool LLParser::ParseDILocation(MDNode *&Result, bool IsDistinct) {
3395 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3396 OPTIONAL(line, LineField, ); \
3397 OPTIONAL(column, ColumnField, ); \
3398 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3399 OPTIONAL(inlinedAt, MDField, );
3401 #undef VISIT_MD_FIELDS
3403 Result = GET_OR_DISTINCT(
3404 DILocation, (Context, line.Val, column.Val, scope.Val, inlinedAt.Val));
3408 /// ParseGenericDINode:
3409 /// ::= !GenericDINode(tag: 15, header: "...", operands: {...})
3410 bool LLParser::ParseGenericDINode(MDNode *&Result, bool IsDistinct) {
3411 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3412 REQUIRED(tag, DwarfTagField, ); \
3413 OPTIONAL(header, MDStringField, ); \
3414 OPTIONAL(operands, MDFieldList, );
3416 #undef VISIT_MD_FIELDS
3418 Result = GET_OR_DISTINCT(GenericDINode,
3419 (Context, tag.Val, header.Val, operands.Val));
3423 /// ParseDISubrange:
3424 /// ::= !DISubrange(count: 30, lowerBound: 2)
3425 bool LLParser::ParseDISubrange(MDNode *&Result, bool IsDistinct) {
3426 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3427 REQUIRED(count, MDSignedField, (-1, -1, INT64_MAX)); \
3428 OPTIONAL(lowerBound, MDSignedField, );
3430 #undef VISIT_MD_FIELDS
3432 Result = GET_OR_DISTINCT(DISubrange, (Context, count.Val, lowerBound.Val));
3436 /// ParseDIEnumerator:
3437 /// ::= !DIEnumerator(value: 30, name: "SomeKind")
3438 bool LLParser::ParseDIEnumerator(MDNode *&Result, bool IsDistinct) {
3439 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3440 REQUIRED(name, MDStringField, ); \
3441 REQUIRED(value, MDSignedField, );
3443 #undef VISIT_MD_FIELDS
3445 Result = GET_OR_DISTINCT(DIEnumerator, (Context, value.Val, name.Val));
3449 /// ParseDIBasicType:
3450 /// ::= !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32)
3451 bool LLParser::ParseDIBasicType(MDNode *&Result, bool IsDistinct) {
3452 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3453 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_base_type)); \
3454 OPTIONAL(name, MDStringField, ); \
3455 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3456 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3457 OPTIONAL(encoding, DwarfAttEncodingField, );
3459 #undef VISIT_MD_FIELDS
3461 Result = GET_OR_DISTINCT(DIBasicType, (Context, tag.Val, name.Val, size.Val,
3462 align.Val, encoding.Val));
3466 /// ParseDIDerivedType:
3467 /// ::= !DIDerivedType(tag: DW_TAG_pointer_type, name: "int", file: !0,
3468 /// line: 7, scope: !1, baseType: !2, size: 32,
3469 /// align: 32, offset: 0, flags: 0, extraData: !3)
3470 bool LLParser::ParseDIDerivedType(MDNode *&Result, bool IsDistinct) {
3471 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3472 REQUIRED(tag, DwarfTagField, ); \
3473 OPTIONAL(name, MDStringField, ); \
3474 OPTIONAL(file, MDField, ); \
3475 OPTIONAL(line, LineField, ); \
3476 OPTIONAL(scope, MDField, ); \
3477 REQUIRED(baseType, MDField, ); \
3478 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3479 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3480 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX)); \
3481 OPTIONAL(flags, DIFlagField, ); \
3482 OPTIONAL(extraData, MDField, );
3484 #undef VISIT_MD_FIELDS
3486 Result = GET_OR_DISTINCT(DIDerivedType,
3487 (Context, tag.Val, name.Val, file.Val, line.Val,
3488 scope.Val, baseType.Val, size.Val, align.Val,
3489 offset.Val, flags.Val, extraData.Val));
3493 bool LLParser::ParseDICompositeType(MDNode *&Result, bool IsDistinct) {
3494 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3495 REQUIRED(tag, DwarfTagField, ); \
3496 OPTIONAL(name, MDStringField, ); \
3497 OPTIONAL(file, MDField, ); \
3498 OPTIONAL(line, LineField, ); \
3499 OPTIONAL(scope, MDField, ); \
3500 OPTIONAL(baseType, MDField, ); \
3501 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3502 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3503 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX)); \
3504 OPTIONAL(flags, DIFlagField, ); \
3505 OPTIONAL(elements, MDField, ); \
3506 OPTIONAL(runtimeLang, DwarfLangField, ); \
3507 OPTIONAL(vtableHolder, MDField, ); \
3508 OPTIONAL(templateParams, MDField, ); \
3509 OPTIONAL(identifier, MDStringField, );
3511 #undef VISIT_MD_FIELDS
3513 Result = GET_OR_DISTINCT(
3515 (Context, tag.Val, name.Val, file.Val, line.Val, scope.Val, baseType.Val,
3516 size.Val, align.Val, offset.Val, flags.Val, elements.Val,
3517 runtimeLang.Val, vtableHolder.Val, templateParams.Val, identifier.Val));
3521 bool LLParser::ParseDISubroutineType(MDNode *&Result, bool IsDistinct) {
3522 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3523 OPTIONAL(flags, DIFlagField, ); \
3524 REQUIRED(types, MDField, );
3526 #undef VISIT_MD_FIELDS
3528 Result = GET_OR_DISTINCT(DISubroutineType, (Context, flags.Val, types.Val));
3532 /// ParseDIFileType:
3533 /// ::= !DIFileType(filename: "path/to/file", directory: "/path/to/dir")
3534 bool LLParser::ParseDIFile(MDNode *&Result, bool IsDistinct) {
3535 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3536 REQUIRED(filename, MDStringField, ); \
3537 REQUIRED(directory, MDStringField, );
3539 #undef VISIT_MD_FIELDS
3541 Result = GET_OR_DISTINCT(DIFile, (Context, filename.Val, directory.Val));
3545 /// ParseDICompileUnit:
3546 /// ::= !DICompileUnit(language: DW_LANG_C99, file: !0, producer: "clang",
3547 /// isOptimized: true, flags: "-O2", runtimeVersion: 1,
3548 /// splitDebugFilename: "abc.debug", emissionKind: 1,
3549 /// enums: !1, retainedTypes: !2, subprograms: !3,
3550 /// globals: !4, imports: !5)
3551 bool LLParser::ParseDICompileUnit(MDNode *&Result, bool IsDistinct) {
3552 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3553 REQUIRED(language, DwarfLangField, ); \
3554 REQUIRED(file, MDField, (/* AllowNull */ false)); \
3555 OPTIONAL(producer, MDStringField, ); \
3556 OPTIONAL(isOptimized, MDBoolField, ); \
3557 OPTIONAL(flags, MDStringField, ); \
3558 OPTIONAL(runtimeVersion, MDUnsignedField, (0, UINT32_MAX)); \
3559 OPTIONAL(splitDebugFilename, MDStringField, ); \
3560 OPTIONAL(emissionKind, MDUnsignedField, (0, UINT32_MAX)); \
3561 OPTIONAL(enums, MDField, ); \
3562 OPTIONAL(retainedTypes, MDField, ); \
3563 OPTIONAL(subprograms, MDField, ); \
3564 OPTIONAL(globals, MDField, ); \
3565 OPTIONAL(imports, MDField, );
3567 #undef VISIT_MD_FIELDS
3569 Result = GET_OR_DISTINCT(DICompileUnit,
3570 (Context, language.Val, file.Val, producer.Val,
3571 isOptimized.Val, flags.Val, runtimeVersion.Val,
3572 splitDebugFilename.Val, emissionKind.Val, enums.Val,
3573 retainedTypes.Val, subprograms.Val, globals.Val,
3578 /// ParseDISubprogram:
3579 /// ::= !DISubprogram(scope: !0, name: "foo", linkageName: "_Zfoo",
3580 /// file: !1, line: 7, type: !2, isLocal: false,
3581 /// isDefinition: true, scopeLine: 8, containingType: !3,
3582 /// virtuality: DW_VIRTUALTIY_pure_virtual,
3583 /// virtualIndex: 10, flags: 11,
3584 /// isOptimized: false, function: void ()* @_Z3foov,
3585 /// templateParams: !4, declaration: !5, variables: !6)
3586 bool LLParser::ParseDISubprogram(MDNode *&Result, bool IsDistinct) {
3587 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3588 OPTIONAL(scope, MDField, ); \
3589 OPTIONAL(name, MDStringField, ); \
3590 OPTIONAL(linkageName, MDStringField, ); \
3591 OPTIONAL(file, MDField, ); \
3592 OPTIONAL(line, LineField, ); \
3593 OPTIONAL(type, MDField, ); \
3594 OPTIONAL(isLocal, MDBoolField, ); \
3595 OPTIONAL(isDefinition, MDBoolField, (true)); \
3596 OPTIONAL(scopeLine, LineField, ); \
3597 OPTIONAL(containingType, MDField, ); \
3598 OPTIONAL(virtuality, DwarfVirtualityField, ); \
3599 OPTIONAL(virtualIndex, MDUnsignedField, (0, UINT32_MAX)); \
3600 OPTIONAL(flags, DIFlagField, ); \
3601 OPTIONAL(isOptimized, MDBoolField, ); \
3602 OPTIONAL(function, MDConstant, ); \
3603 OPTIONAL(templateParams, MDField, ); \
3604 OPTIONAL(declaration, MDField, ); \
3605 OPTIONAL(variables, MDField, );
3607 #undef VISIT_MD_FIELDS
3609 Result = GET_OR_DISTINCT(
3610 DISubprogram, (Context, scope.Val, name.Val, linkageName.Val, file.Val,
3611 line.Val, type.Val, isLocal.Val, isDefinition.Val,
3612 scopeLine.Val, containingType.Val, virtuality.Val,
3613 virtualIndex.Val, flags.Val, isOptimized.Val, function.Val,
3614 templateParams.Val, declaration.Val, variables.Val));
3618 /// ParseDILexicalBlock:
3619 /// ::= !DILexicalBlock(scope: !0, file: !2, line: 7, column: 9)
3620 bool LLParser::ParseDILexicalBlock(MDNode *&Result, bool IsDistinct) {
3621 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3622 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3623 OPTIONAL(file, MDField, ); \
3624 OPTIONAL(line, LineField, ); \
3625 OPTIONAL(column, ColumnField, );
3627 #undef VISIT_MD_FIELDS
3629 Result = GET_OR_DISTINCT(
3630 DILexicalBlock, (Context, scope.Val, file.Val, line.Val, column.Val));
3634 /// ParseDILexicalBlockFile:
3635 /// ::= !DILexicalBlockFile(scope: !0, file: !2, discriminator: 9)
3636 bool LLParser::ParseDILexicalBlockFile(MDNode *&Result, bool IsDistinct) {
3637 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3638 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3639 OPTIONAL(file, MDField, ); \
3640 REQUIRED(discriminator, MDUnsignedField, (0, UINT32_MAX));
3642 #undef VISIT_MD_FIELDS
3644 Result = GET_OR_DISTINCT(DILexicalBlockFile,
3645 (Context, scope.Val, file.Val, discriminator.Val));
3649 /// ParseDINamespace:
3650 /// ::= !DINamespace(scope: !0, file: !2, name: "SomeNamespace", line: 9)
3651 bool LLParser::ParseDINamespace(MDNode *&Result, bool IsDistinct) {
3652 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3653 REQUIRED(scope, MDField, ); \
3654 OPTIONAL(file, MDField, ); \
3655 OPTIONAL(name, MDStringField, ); \
3656 OPTIONAL(line, LineField, );
3658 #undef VISIT_MD_FIELDS
3660 Result = GET_OR_DISTINCT(DINamespace,
3661 (Context, scope.Val, file.Val, name.Val, line.Val));
3665 /// ParseDITemplateTypeParameter:
3666 /// ::= !DITemplateTypeParameter(name: "Ty", type: !1)
3667 bool LLParser::ParseDITemplateTypeParameter(MDNode *&Result, bool IsDistinct) {
3668 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3669 OPTIONAL(name, MDStringField, ); \
3670 REQUIRED(type, MDField, );
3672 #undef VISIT_MD_FIELDS
3675 GET_OR_DISTINCT(DITemplateTypeParameter, (Context, name.Val, type.Val));
3679 /// ParseDITemplateValueParameter:
3680 /// ::= !DITemplateValueParameter(tag: DW_TAG_template_value_parameter,
3681 /// name: "V", type: !1, value: i32 7)
3682 bool LLParser::ParseDITemplateValueParameter(MDNode *&Result, bool IsDistinct) {
3683 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3684 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_template_value_parameter)); \
3685 OPTIONAL(name, MDStringField, ); \
3686 OPTIONAL(type, MDField, ); \
3687 REQUIRED(value, MDField, );
3689 #undef VISIT_MD_FIELDS
3691 Result = GET_OR_DISTINCT(DITemplateValueParameter,
3692 (Context, tag.Val, name.Val, type.Val, value.Val));
3696 /// ParseDIGlobalVariable:
3697 /// ::= !DIGlobalVariable(scope: !0, name: "foo", linkageName: "foo",
3698 /// file: !1, line: 7, type: !2, isLocal: false,
3699 /// isDefinition: true, variable: i32* @foo,
3700 /// declaration: !3)
3701 bool LLParser::ParseDIGlobalVariable(MDNode *&Result, bool IsDistinct) {
3702 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3703 REQUIRED(name, MDStringField, (/* AllowEmpty */ false)); \
3704 OPTIONAL(scope, MDField, ); \
3705 OPTIONAL(linkageName, MDStringField, ); \
3706 OPTIONAL(file, MDField, ); \
3707 OPTIONAL(line, LineField, ); \
3708 OPTIONAL(type, MDField, ); \
3709 OPTIONAL(isLocal, MDBoolField, ); \
3710 OPTIONAL(isDefinition, MDBoolField, (true)); \
3711 OPTIONAL(variable, MDConstant, ); \
3712 OPTIONAL(declaration, MDField, );
3714 #undef VISIT_MD_FIELDS
3716 Result = GET_OR_DISTINCT(DIGlobalVariable,
3717 (Context, scope.Val, name.Val, linkageName.Val,
3718 file.Val, line.Val, type.Val, isLocal.Val,
3719 isDefinition.Val, variable.Val, declaration.Val));
3723 /// ParseDILocalVariable:
3724 /// ::= !DILocalVariable(tag: DW_TAG_arg_variable, scope: !0, name: "foo",
3725 /// file: !1, line: 7, type: !2, arg: 2, flags: 7)
3726 bool LLParser::ParseDILocalVariable(MDNode *&Result, bool IsDistinct) {
3727 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3728 REQUIRED(tag, DwarfTagField, ); \
3729 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3730 OPTIONAL(name, MDStringField, ); \
3731 OPTIONAL(file, MDField, ); \
3732 OPTIONAL(line, LineField, ); \
3733 OPTIONAL(type, MDField, ); \
3734 OPTIONAL(arg, MDUnsignedField, (0, UINT8_MAX)); \
3735 OPTIONAL(flags, DIFlagField, );
3737 #undef VISIT_MD_FIELDS
3739 Result = GET_OR_DISTINCT(DILocalVariable,
3740 (Context, tag.Val, scope.Val, name.Val, file.Val,
3741 line.Val, type.Val, arg.Val, flags.Val));
3745 /// ParseDIExpression:
3746 /// ::= !DIExpression(0, 7, -1)
3747 bool LLParser::ParseDIExpression(MDNode *&Result, bool IsDistinct) {
3748 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3751 if (ParseToken(lltok::lparen, "expected '(' here"))
3754 SmallVector<uint64_t, 8> Elements;
3755 if (Lex.getKind() != lltok::rparen)
3757 if (Lex.getKind() == lltok::DwarfOp) {
3758 if (unsigned Op = dwarf::getOperationEncoding(Lex.getStrVal())) {
3760 Elements.push_back(Op);
3763 return TokError(Twine("invalid DWARF op '") + Lex.getStrVal() + "'");
3766 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
3767 return TokError("expected unsigned integer");
3769 auto &U = Lex.getAPSIntVal();
3770 if (U.ugt(UINT64_MAX))
3771 return TokError("element too large, limit is " + Twine(UINT64_MAX));
3772 Elements.push_back(U.getZExtValue());
3774 } while (EatIfPresent(lltok::comma));
3776 if (ParseToken(lltok::rparen, "expected ')' here"))
3779 Result = GET_OR_DISTINCT(DIExpression, (Context, Elements));
3783 /// ParseDIObjCProperty:
3784 /// ::= !DIObjCProperty(name: "foo", file: !1, line: 7, setter: "setFoo",
3785 /// getter: "getFoo", attributes: 7, type: !2)
3786 bool LLParser::ParseDIObjCProperty(MDNode *&Result, bool IsDistinct) {
3787 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3788 OPTIONAL(name, MDStringField, ); \
3789 OPTIONAL(file, MDField, ); \
3790 OPTIONAL(line, LineField, ); \
3791 OPTIONAL(setter, MDStringField, ); \
3792 OPTIONAL(getter, MDStringField, ); \
3793 OPTIONAL(attributes, MDUnsignedField, (0, UINT32_MAX)); \
3794 OPTIONAL(type, MDField, );
3796 #undef VISIT_MD_FIELDS
3798 Result = GET_OR_DISTINCT(DIObjCProperty,
3799 (Context, name.Val, file.Val, line.Val, setter.Val,
3800 getter.Val, attributes.Val, type.Val));
3804 /// ParseDIImportedEntity:
3805 /// ::= !DIImportedEntity(tag: DW_TAG_imported_module, scope: !0, entity: !1,
3806 /// line: 7, name: "foo")
3807 bool LLParser::ParseDIImportedEntity(MDNode *&Result, bool IsDistinct) {
3808 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3809 REQUIRED(tag, DwarfTagField, ); \
3810 REQUIRED(scope, MDField, ); \
3811 OPTIONAL(entity, MDField, ); \
3812 OPTIONAL(line, LineField, ); \
3813 OPTIONAL(name, MDStringField, );
3815 #undef VISIT_MD_FIELDS
3817 Result = GET_OR_DISTINCT(DIImportedEntity, (Context, tag.Val, scope.Val,
3818 entity.Val, line.Val, name.Val));
3822 #undef PARSE_MD_FIELD
3824 #undef REQUIRE_FIELD
3825 #undef DECLARE_FIELD
3827 /// ParseMetadataAsValue
3828 /// ::= metadata i32 %local
3829 /// ::= metadata i32 @global
3830 /// ::= metadata i32 7
3832 /// ::= metadata !{...}
3833 /// ::= metadata !"string"
3834 bool LLParser::ParseMetadataAsValue(Value *&V, PerFunctionState &PFS) {
3835 // Note: the type 'metadata' has already been parsed.
3837 if (ParseMetadata(MD, &PFS))
3840 V = MetadataAsValue::get(Context, MD);
3844 /// ParseValueAsMetadata
3848 bool LLParser::ParseValueAsMetadata(Metadata *&MD, const Twine &TypeMsg,
3849 PerFunctionState *PFS) {
3852 if (ParseType(Ty, TypeMsg, Loc))
3854 if (Ty->isMetadataTy())
3855 return Error(Loc, "invalid metadata-value-metadata roundtrip");
3858 if (ParseValue(Ty, V, PFS))
3861 MD = ValueAsMetadata::get(V);
3872 /// ::= !DILocation(...)
3873 bool LLParser::ParseMetadata(Metadata *&MD, PerFunctionState *PFS) {
3874 if (Lex.getKind() == lltok::MetadataVar) {
3876 if (ParseSpecializedMDNode(N))
3884 if (Lex.getKind() != lltok::exclaim)
3885 return ParseValueAsMetadata(MD, "expected metadata operand", PFS);
3888 assert(Lex.getKind() == lltok::exclaim && "Expected '!' here");
3892 // ::= '!' STRINGCONSTANT
3893 if (Lex.getKind() == lltok::StringConstant) {
3895 if (ParseMDString(S))
3905 if (ParseMDNodeTail(N))
3912 //===----------------------------------------------------------------------===//
3913 // Function Parsing.
3914 //===----------------------------------------------------------------------===//
3916 bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
3917 PerFunctionState *PFS) {
3918 if (Ty->isFunctionTy())
3919 return Error(ID.Loc, "functions are not values, refer to them as pointers");
3922 case ValID::t_LocalID:
3923 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
3924 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
3925 return V == nullptr;
3926 case ValID::t_LocalName:
3927 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
3928 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
3929 return V == nullptr;
3930 case ValID::t_InlineAsm: {
3931 PointerType *PTy = dyn_cast<PointerType>(Ty);
3933 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : nullptr;
3934 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
3935 return Error(ID.Loc, "invalid type for inline asm constraint string");
3936 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1,
3937 (ID.UIntVal>>1)&1, (InlineAsm::AsmDialect(ID.UIntVal>>2)));
3940 case ValID::t_GlobalName:
3941 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
3942 return V == nullptr;
3943 case ValID::t_GlobalID:
3944 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
3945 return V == nullptr;
3946 case ValID::t_APSInt:
3947 if (!Ty->isIntegerTy())
3948 return Error(ID.Loc, "integer constant must have integer type");
3949 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
3950 V = ConstantInt::get(Context, ID.APSIntVal);
3952 case ValID::t_APFloat:
3953 if (!Ty->isFloatingPointTy() ||
3954 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
3955 return Error(ID.Loc, "floating point constant invalid for type");
3957 // The lexer has no type info, so builds all half, float, and double FP
3958 // constants as double. Fix this here. Long double does not need this.
3959 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble) {
3962 ID.APFloatVal.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven,
3964 else if (Ty->isFloatTy())
3965 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
3968 V = ConstantFP::get(Context, ID.APFloatVal);
3970 if (V->getType() != Ty)
3971 return Error(ID.Loc, "floating point constant does not have type '" +
3972 getTypeString(Ty) + "'");
3976 if (!Ty->isPointerTy())
3977 return Error(ID.Loc, "null must be a pointer type");
3978 V = ConstantPointerNull::get(cast<PointerType>(Ty));
3980 case ValID::t_Undef:
3981 // FIXME: LabelTy should not be a first-class type.
3982 if (!Ty->isFirstClassType() || Ty->isLabelTy())
3983 return Error(ID.Loc, "invalid type for undef constant");
3984 V = UndefValue::get(Ty);
3986 case ValID::t_EmptyArray:
3987 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
3988 return Error(ID.Loc, "invalid empty array initializer");
3989 V = UndefValue::get(Ty);
3992 // FIXME: LabelTy should not be a first-class type.
3993 if (!Ty->isFirstClassType() || Ty->isLabelTy())
3994 return Error(ID.Loc, "invalid type for null constant");
3995 V = Constant::getNullValue(Ty);
3997 case ValID::t_Constant:
3998 if (ID.ConstantVal->getType() != Ty)
3999 return Error(ID.Loc, "constant expression type mismatch");
4003 case ValID::t_ConstantStruct:
4004 case ValID::t_PackedConstantStruct:
4005 if (StructType *ST = dyn_cast<StructType>(Ty)) {
4006 if (ST->getNumElements() != ID.UIntVal)
4007 return Error(ID.Loc,
4008 "initializer with struct type has wrong # elements");
4009 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
4010 return Error(ID.Loc, "packed'ness of initializer and type don't match");
4012 // Verify that the elements are compatible with the structtype.
4013 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
4014 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
4015 return Error(ID.Loc, "element " + Twine(i) +
4016 " of struct initializer doesn't match struct element type");
4018 V = ConstantStruct::get(ST, makeArrayRef(ID.ConstantStructElts,
4021 return Error(ID.Loc, "constant expression type mismatch");
4024 llvm_unreachable("Invalid ValID");
4027 bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS) {
4030 return ParseValID(ID, PFS) ||
4031 ConvertValIDToValue(Ty, ID, V, PFS);
4034 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
4036 return ParseType(Ty) ||
4037 ParseValue(Ty, V, PFS);
4040 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
4041 PerFunctionState &PFS) {
4044 if (ParseTypeAndValue(V, PFS)) return true;
4045 if (!isa<BasicBlock>(V))
4046 return Error(Loc, "expected a basic block");
4047 BB = cast<BasicBlock>(V);
4053 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
4054 /// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
4055 /// OptionalAlign OptGC OptionalPrefix OptionalPrologue
4056 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
4057 // Parse the linkage.
4058 LocTy LinkageLoc = Lex.getLoc();
4061 unsigned Visibility;
4062 unsigned DLLStorageClass;
4063 AttrBuilder RetAttrs;
4065 Type *RetType = nullptr;
4066 LocTy RetTypeLoc = Lex.getLoc();
4067 if (ParseOptionalLinkage(Linkage) ||
4068 ParseOptionalVisibility(Visibility) ||
4069 ParseOptionalDLLStorageClass(DLLStorageClass) ||
4070 ParseOptionalCallingConv(CC) ||
4071 ParseOptionalReturnAttrs(RetAttrs) ||
4072 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
4075 // Verify that the linkage is ok.
4076 switch ((GlobalValue::LinkageTypes)Linkage) {
4077 case GlobalValue::ExternalLinkage:
4078 break; // always ok.
4079 case GlobalValue::ExternalWeakLinkage:
4081 return Error(LinkageLoc, "invalid linkage for function definition");
4083 case GlobalValue::PrivateLinkage:
4084 case GlobalValue::InternalLinkage:
4085 case GlobalValue::AvailableExternallyLinkage:
4086 case GlobalValue::LinkOnceAnyLinkage:
4087 case GlobalValue::LinkOnceODRLinkage:
4088 case GlobalValue::WeakAnyLinkage:
4089 case GlobalValue::WeakODRLinkage:
4091 return Error(LinkageLoc, "invalid linkage for function declaration");
4093 case GlobalValue::AppendingLinkage:
4094 case GlobalValue::CommonLinkage:
4095 return Error(LinkageLoc, "invalid function linkage type");
4098 if (!isValidVisibilityForLinkage(Visibility, Linkage))
4099 return Error(LinkageLoc,
4100 "symbol with local linkage must have default visibility");
4102 if (!FunctionType::isValidReturnType(RetType))
4103 return Error(RetTypeLoc, "invalid function return type");
4105 LocTy NameLoc = Lex.getLoc();
4107 std::string FunctionName;
4108 if (Lex.getKind() == lltok::GlobalVar) {
4109 FunctionName = Lex.getStrVal();
4110 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
4111 unsigned NameID = Lex.getUIntVal();
4113 if (NameID != NumberedVals.size())
4114 return TokError("function expected to be numbered '%" +
4115 Twine(NumberedVals.size()) + "'");
4117 return TokError("expected function name");
4122 if (Lex.getKind() != lltok::lparen)
4123 return TokError("expected '(' in function argument list");
4125 SmallVector<ArgInfo, 8> ArgList;
4127 AttrBuilder FuncAttrs;
4128 std::vector<unsigned> FwdRefAttrGrps;
4130 std::string Section;
4134 LocTy UnnamedAddrLoc;
4135 Constant *Prefix = nullptr;
4136 Constant *Prologue = nullptr;
4139 if (ParseArgumentList(ArgList, isVarArg) ||
4140 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
4142 ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false,
4144 (EatIfPresent(lltok::kw_section) &&
4145 ParseStringConstant(Section)) ||
4146 parseOptionalComdat(FunctionName, C) ||
4147 ParseOptionalAlignment(Alignment) ||
4148 (EatIfPresent(lltok::kw_gc) &&
4149 ParseStringConstant(GC)) ||
4150 (EatIfPresent(lltok::kw_prefix) &&
4151 ParseGlobalTypeAndValue(Prefix)) ||
4152 (EatIfPresent(lltok::kw_prologue) &&
4153 ParseGlobalTypeAndValue(Prologue)))
4156 if (FuncAttrs.contains(Attribute::Builtin))
4157 return Error(BuiltinLoc, "'builtin' attribute not valid on function");
4159 // If the alignment was parsed as an attribute, move to the alignment field.
4160 if (FuncAttrs.hasAlignmentAttr()) {
4161 Alignment = FuncAttrs.getAlignment();
4162 FuncAttrs.removeAttribute(Attribute::Alignment);
4165 // Okay, if we got here, the function is syntactically valid. Convert types
4166 // and do semantic checks.
4167 std::vector<Type*> ParamTypeList;
4168 SmallVector<AttributeSet, 8> Attrs;
4170 if (RetAttrs.hasAttributes())
4171 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4172 AttributeSet::ReturnIndex,
4175 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
4176 ParamTypeList.push_back(ArgList[i].Ty);
4177 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
4178 AttrBuilder B(ArgList[i].Attrs, i + 1);
4179 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
4183 if (FuncAttrs.hasAttributes())
4184 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4185 AttributeSet::FunctionIndex,
4188 AttributeSet PAL = AttributeSet::get(Context, Attrs);
4190 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
4191 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
4194 FunctionType::get(RetType, ParamTypeList, isVarArg);
4195 PointerType *PFT = PointerType::getUnqual(FT);
4198 if (!FunctionName.empty()) {
4199 // If this was a definition of a forward reference, remove the definition
4200 // from the forward reference table and fill in the forward ref.
4201 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
4202 ForwardRefVals.find(FunctionName);
4203 if (FRVI != ForwardRefVals.end()) {
4204 Fn = M->getFunction(FunctionName);
4206 return Error(FRVI->second.second, "invalid forward reference to "
4207 "function as global value!");
4208 if (Fn->getType() != PFT)
4209 return Error(FRVI->second.second, "invalid forward reference to "
4210 "function '" + FunctionName + "' with wrong type!");
4212 ForwardRefVals.erase(FRVI);
4213 } else if ((Fn = M->getFunction(FunctionName))) {
4214 // Reject redefinitions.
4215 return Error(NameLoc, "invalid redefinition of function '" +
4216 FunctionName + "'");
4217 } else if (M->getNamedValue(FunctionName)) {
4218 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
4222 // If this is a definition of a forward referenced function, make sure the
4224 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
4225 = ForwardRefValIDs.find(NumberedVals.size());
4226 if (I != ForwardRefValIDs.end()) {
4227 Fn = cast<Function>(I->second.first);
4228 if (Fn->getType() != PFT)
4229 return Error(NameLoc, "type of definition and forward reference of '@" +
4230 Twine(NumberedVals.size()) + "' disagree");
4231 ForwardRefValIDs.erase(I);
4236 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
4237 else // Move the forward-reference to the correct spot in the module.
4238 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
4240 if (FunctionName.empty())
4241 NumberedVals.push_back(Fn);
4243 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
4244 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
4245 Fn->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
4246 Fn->setCallingConv(CC);
4247 Fn->setAttributes(PAL);
4248 Fn->setUnnamedAddr(UnnamedAddr);
4249 Fn->setAlignment(Alignment);
4250 Fn->setSection(Section);
4252 if (!GC.empty()) Fn->setGC(GC.c_str());
4253 Fn->setPrefixData(Prefix);
4254 Fn->setPrologueData(Prologue);
4255 ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
4257 // Add all of the arguments we parsed to the function.
4258 Function::arg_iterator ArgIt = Fn->arg_begin();
4259 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
4260 // If the argument has a name, insert it into the argument symbol table.
4261 if (ArgList[i].Name.empty()) continue;
4263 // Set the name, if it conflicted, it will be auto-renamed.
4264 ArgIt->setName(ArgList[i].Name);
4266 if (ArgIt->getName() != ArgList[i].Name)
4267 return Error(ArgList[i].Loc, "redefinition of argument '%" +
4268 ArgList[i].Name + "'");
4274 // Check the declaration has no block address forward references.
4276 if (FunctionName.empty()) {
4277 ID.Kind = ValID::t_GlobalID;
4278 ID.UIntVal = NumberedVals.size() - 1;
4280 ID.Kind = ValID::t_GlobalName;
4281 ID.StrVal = FunctionName;
4283 auto Blocks = ForwardRefBlockAddresses.find(ID);
4284 if (Blocks != ForwardRefBlockAddresses.end())
4285 return Error(Blocks->first.Loc,
4286 "cannot take blockaddress inside a declaration");
4290 bool LLParser::PerFunctionState::resolveForwardRefBlockAddresses() {
4292 if (FunctionNumber == -1) {
4293 ID.Kind = ValID::t_GlobalName;
4294 ID.StrVal = F.getName();
4296 ID.Kind = ValID::t_GlobalID;
4297 ID.UIntVal = FunctionNumber;
4300 auto Blocks = P.ForwardRefBlockAddresses.find(ID);
4301 if (Blocks == P.ForwardRefBlockAddresses.end())
4304 for (const auto &I : Blocks->second) {
4305 const ValID &BBID = I.first;
4306 GlobalValue *GV = I.second;
4308 assert((BBID.Kind == ValID::t_LocalID || BBID.Kind == ValID::t_LocalName) &&
4309 "Expected local id or name");
4311 if (BBID.Kind == ValID::t_LocalName)
4312 BB = GetBB(BBID.StrVal, BBID.Loc);
4314 BB = GetBB(BBID.UIntVal, BBID.Loc);
4316 return P.Error(BBID.Loc, "referenced value is not a basic block");
4318 GV->replaceAllUsesWith(BlockAddress::get(&F, BB));
4319 GV->eraseFromParent();
4322 P.ForwardRefBlockAddresses.erase(Blocks);
4326 /// ParseFunctionBody
4327 /// ::= '{' BasicBlock+ UseListOrderDirective* '}'
4328 bool LLParser::ParseFunctionBody(Function &Fn) {
4329 if (Lex.getKind() != lltok::lbrace)
4330 return TokError("expected '{' in function body");
4331 Lex.Lex(); // eat the {.
4333 int FunctionNumber = -1;
4334 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
4336 PerFunctionState PFS(*this, Fn, FunctionNumber);
4338 // Resolve block addresses and allow basic blocks to be forward-declared
4339 // within this function.
4340 if (PFS.resolveForwardRefBlockAddresses())
4342 SaveAndRestore<PerFunctionState *> ScopeExit(BlockAddressPFS, &PFS);
4344 // We need at least one basic block.
4345 if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_uselistorder)
4346 return TokError("function body requires at least one basic block");
4348 while (Lex.getKind() != lltok::rbrace &&
4349 Lex.getKind() != lltok::kw_uselistorder)
4350 if (ParseBasicBlock(PFS)) return true;
4352 while (Lex.getKind() != lltok::rbrace)
4353 if (ParseUseListOrder(&PFS))
4359 // Verify function is ok.
4360 return PFS.FinishFunction();
4364 /// ::= LabelStr? Instruction*
4365 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
4366 // If this basic block starts out with a name, remember it.
4368 LocTy NameLoc = Lex.getLoc();
4369 if (Lex.getKind() == lltok::LabelStr) {
4370 Name = Lex.getStrVal();
4374 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
4376 return Error(NameLoc,
4377 "unable to create block named '" + Name + "'");
4379 std::string NameStr;
4381 // Parse the instructions in this block until we get a terminator.
4384 // This instruction may have three possibilities for a name: a) none
4385 // specified, b) name specified "%foo =", c) number specified: "%4 =".
4386 LocTy NameLoc = Lex.getLoc();
4390 if (Lex.getKind() == lltok::LocalVarID) {
4391 NameID = Lex.getUIntVal();
4393 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
4395 } else if (Lex.getKind() == lltok::LocalVar) {
4396 NameStr = Lex.getStrVal();
4398 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
4402 switch (ParseInstruction(Inst, BB, PFS)) {
4403 default: llvm_unreachable("Unknown ParseInstruction result!");
4404 case InstError: return true;
4406 BB->getInstList().push_back(Inst);
4408 // With a normal result, we check to see if the instruction is followed by
4409 // a comma and metadata.
4410 if (EatIfPresent(lltok::comma))
4411 if (ParseInstructionMetadata(*Inst))
4414 case InstExtraComma:
4415 BB->getInstList().push_back(Inst);
4417 // If the instruction parser ate an extra comma at the end of it, it
4418 // *must* be followed by metadata.
4419 if (ParseInstructionMetadata(*Inst))
4424 // Set the name on the instruction.
4425 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
4426 } while (!isa<TerminatorInst>(Inst));
4431 //===----------------------------------------------------------------------===//
4432 // Instruction Parsing.
4433 //===----------------------------------------------------------------------===//
4435 /// ParseInstruction - Parse one of the many different instructions.
4437 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
4438 PerFunctionState &PFS) {
4439 lltok::Kind Token = Lex.getKind();
4440 if (Token == lltok::Eof)
4441 return TokError("found end of file when expecting more instructions");
4442 LocTy Loc = Lex.getLoc();
4443 unsigned KeywordVal = Lex.getUIntVal();
4444 Lex.Lex(); // Eat the keyword.
4447 default: return Error(Loc, "expected instruction opcode");
4448 // Terminator Instructions.
4449 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
4450 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
4451 case lltok::kw_br: return ParseBr(Inst, PFS);
4452 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
4453 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
4454 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
4455 case lltok::kw_resume: return ParseResume(Inst, PFS);
4456 // Binary Operators.
4460 case lltok::kw_shl: {
4461 bool NUW = EatIfPresent(lltok::kw_nuw);
4462 bool NSW = EatIfPresent(lltok::kw_nsw);
4463 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
4465 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
4467 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
4468 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
4471 case lltok::kw_fadd:
4472 case lltok::kw_fsub:
4473 case lltok::kw_fmul:
4474 case lltok::kw_fdiv:
4475 case lltok::kw_frem: {
4476 FastMathFlags FMF = EatFastMathFlagsIfPresent();
4477 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
4481 Inst->setFastMathFlags(FMF);
4485 case lltok::kw_sdiv:
4486 case lltok::kw_udiv:
4487 case lltok::kw_lshr:
4488 case lltok::kw_ashr: {
4489 bool Exact = EatIfPresent(lltok::kw_exact);
4491 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
4492 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
4496 case lltok::kw_urem:
4497 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
4500 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
4501 case lltok::kw_icmp:
4502 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
4504 case lltok::kw_trunc:
4505 case lltok::kw_zext:
4506 case lltok::kw_sext:
4507 case lltok::kw_fptrunc:
4508 case lltok::kw_fpext:
4509 case lltok::kw_bitcast:
4510 case lltok::kw_addrspacecast:
4511 case lltok::kw_uitofp:
4512 case lltok::kw_sitofp:
4513 case lltok::kw_fptoui:
4514 case lltok::kw_fptosi:
4515 case lltok::kw_inttoptr:
4516 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
4518 case lltok::kw_select: return ParseSelect(Inst, PFS);
4519 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
4520 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
4521 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
4522 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
4523 case lltok::kw_phi: return ParsePHI(Inst, PFS);
4524 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
4526 case lltok::kw_call: return ParseCall(Inst, PFS, CallInst::TCK_None);
4527 case lltok::kw_tail: return ParseCall(Inst, PFS, CallInst::TCK_Tail);
4528 case lltok::kw_musttail: return ParseCall(Inst, PFS, CallInst::TCK_MustTail);
4530 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
4531 case lltok::kw_load: return ParseLoad(Inst, PFS);
4532 case lltok::kw_store: return ParseStore(Inst, PFS);
4533 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
4534 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
4535 case lltok::kw_fence: return ParseFence(Inst, PFS);
4536 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
4537 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
4538 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
4542 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
4543 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
4544 if (Opc == Instruction::FCmp) {
4545 switch (Lex.getKind()) {
4546 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
4547 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
4548 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
4549 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
4550 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
4551 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
4552 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
4553 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
4554 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
4555 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
4556 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
4557 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
4558 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
4559 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
4560 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
4561 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
4562 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
4565 switch (Lex.getKind()) {
4566 default: return TokError("expected icmp predicate (e.g. 'eq')");
4567 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
4568 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
4569 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
4570 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
4571 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
4572 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
4573 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
4574 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
4575 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
4576 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
4583 //===----------------------------------------------------------------------===//
4584 // Terminator Instructions.
4585 //===----------------------------------------------------------------------===//
4587 /// ParseRet - Parse a return instruction.
4588 /// ::= 'ret' void (',' !dbg, !1)*
4589 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
4590 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
4591 PerFunctionState &PFS) {
4592 SMLoc TypeLoc = Lex.getLoc();
4594 if (ParseType(Ty, true /*void allowed*/)) return true;
4596 Type *ResType = PFS.getFunction().getReturnType();
4598 if (Ty->isVoidTy()) {
4599 if (!ResType->isVoidTy())
4600 return Error(TypeLoc, "value doesn't match function result type '" +
4601 getTypeString(ResType) + "'");
4603 Inst = ReturnInst::Create(Context);
4608 if (ParseValue(Ty, RV, PFS)) return true;
4610 if (ResType != RV->getType())
4611 return Error(TypeLoc, "value doesn't match function result type '" +
4612 getTypeString(ResType) + "'");
4614 Inst = ReturnInst::Create(Context, RV);
4620 /// ::= 'br' TypeAndValue
4621 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
4622 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
4625 BasicBlock *Op1, *Op2;
4626 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
4628 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
4629 Inst = BranchInst::Create(BB);
4633 if (Op0->getType() != Type::getInt1Ty(Context))
4634 return Error(Loc, "branch condition must have 'i1' type");
4636 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
4637 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
4638 ParseToken(lltok::comma, "expected ',' after true destination") ||
4639 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
4642 Inst = BranchInst::Create(Op1, Op2, Op0);
4648 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
4650 /// ::= (TypeAndValue ',' TypeAndValue)*
4651 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
4652 LocTy CondLoc, BBLoc;
4654 BasicBlock *DefaultBB;
4655 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
4656 ParseToken(lltok::comma, "expected ',' after switch condition") ||
4657 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
4658 ParseToken(lltok::lsquare, "expected '[' with switch table"))
4661 if (!Cond->getType()->isIntegerTy())
4662 return Error(CondLoc, "switch condition must have integer type");
4664 // Parse the jump table pairs.
4665 SmallPtrSet<Value*, 32> SeenCases;
4666 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
4667 while (Lex.getKind() != lltok::rsquare) {
4671 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
4672 ParseToken(lltok::comma, "expected ',' after case value") ||
4673 ParseTypeAndBasicBlock(DestBB, PFS))
4676 if (!SeenCases.insert(Constant).second)
4677 return Error(CondLoc, "duplicate case value in switch");
4678 if (!isa<ConstantInt>(Constant))
4679 return Error(CondLoc, "case value is not a constant integer");
4681 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
4684 Lex.Lex(); // Eat the ']'.
4686 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
4687 for (unsigned i = 0, e = Table.size(); i != e; ++i)
4688 SI->addCase(Table[i].first, Table[i].second);
4695 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
4696 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
4699 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
4700 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
4701 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
4704 if (!Address->getType()->isPointerTy())
4705 return Error(AddrLoc, "indirectbr address must have pointer type");
4707 // Parse the destination list.
4708 SmallVector<BasicBlock*, 16> DestList;
4710 if (Lex.getKind() != lltok::rsquare) {
4712 if (ParseTypeAndBasicBlock(DestBB, PFS))
4714 DestList.push_back(DestBB);
4716 while (EatIfPresent(lltok::comma)) {
4717 if (ParseTypeAndBasicBlock(DestBB, PFS))
4719 DestList.push_back(DestBB);
4723 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
4726 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
4727 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
4728 IBI->addDestination(DestList[i]);
4735 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
4736 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
4737 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
4738 LocTy CallLoc = Lex.getLoc();
4739 AttrBuilder RetAttrs, FnAttrs;
4740 std::vector<unsigned> FwdRefAttrGrps;
4743 Type *RetType = nullptr;
4746 SmallVector<ParamInfo, 16> ArgList;
4748 BasicBlock *NormalBB, *UnwindBB;
4749 if (ParseOptionalCallingConv(CC) ||
4750 ParseOptionalReturnAttrs(RetAttrs) ||
4751 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
4752 ParseValID(CalleeID) ||
4753 ParseParameterList(ArgList, PFS) ||
4754 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
4756 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
4757 ParseTypeAndBasicBlock(NormalBB, PFS) ||
4758 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
4759 ParseTypeAndBasicBlock(UnwindBB, PFS))
4762 // If RetType is a non-function pointer type, then this is the short syntax
4763 // for the call, which means that RetType is just the return type. Infer the
4764 // rest of the function argument types from the arguments that are present.
4765 FunctionType *Ty = dyn_cast<FunctionType>(RetType);
4767 // Pull out the types of all of the arguments...
4768 std::vector<Type*> ParamTypes;
4769 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
4770 ParamTypes.push_back(ArgList[i].V->getType());
4772 if (!FunctionType::isValidReturnType(RetType))
4773 return Error(RetTypeLoc, "Invalid result type for LLVM function");
4775 Ty = FunctionType::get(RetType, ParamTypes, false);
4778 // Look up the callee.
4780 if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS))
4783 // Set up the Attribute for the function.
4784 SmallVector<AttributeSet, 8> Attrs;
4785 if (RetAttrs.hasAttributes())
4786 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4787 AttributeSet::ReturnIndex,
4790 SmallVector<Value*, 8> Args;
4792 // Loop through FunctionType's arguments and ensure they are specified
4793 // correctly. Also, gather any parameter attributes.
4794 FunctionType::param_iterator I = Ty->param_begin();
4795 FunctionType::param_iterator E = Ty->param_end();
4796 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
4797 Type *ExpectedTy = nullptr;
4800 } else if (!Ty->isVarArg()) {
4801 return Error(ArgList[i].Loc, "too many arguments specified");
4804 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
4805 return Error(ArgList[i].Loc, "argument is not of expected type '" +
4806 getTypeString(ExpectedTy) + "'");
4807 Args.push_back(ArgList[i].V);
4808 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
4809 AttrBuilder B(ArgList[i].Attrs, i + 1);
4810 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
4815 return Error(CallLoc, "not enough parameters specified for call");
4817 if (FnAttrs.hasAttributes()) {
4818 if (FnAttrs.hasAlignmentAttr())
4819 return Error(CallLoc, "invoke instructions may not have an alignment");
4821 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4822 AttributeSet::FunctionIndex,
4826 // Finish off the Attribute and check them
4827 AttributeSet PAL = AttributeSet::get(Context, Attrs);
4829 InvokeInst *II = InvokeInst::Create(Ty, Callee, NormalBB, UnwindBB, Args);
4830 II->setCallingConv(CC);
4831 II->setAttributes(PAL);
4832 ForwardRefAttrGroups[II] = FwdRefAttrGrps;
4838 /// ::= 'resume' TypeAndValue
4839 bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
4840 Value *Exn; LocTy ExnLoc;
4841 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
4844 ResumeInst *RI = ResumeInst::Create(Exn);
4849 //===----------------------------------------------------------------------===//
4850 // Binary Operators.
4851 //===----------------------------------------------------------------------===//
4854 /// ::= ArithmeticOps TypeAndValue ',' Value
4856 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
4857 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
4858 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
4859 unsigned Opc, unsigned OperandType) {
4860 LocTy Loc; Value *LHS, *RHS;
4861 if (ParseTypeAndValue(LHS, Loc, PFS) ||
4862 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
4863 ParseValue(LHS->getType(), RHS, PFS))
4867 switch (OperandType) {
4868 default: llvm_unreachable("Unknown operand type!");
4869 case 0: // int or FP.
4870 Valid = LHS->getType()->isIntOrIntVectorTy() ||
4871 LHS->getType()->isFPOrFPVectorTy();
4873 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
4874 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
4878 return Error(Loc, "invalid operand type for instruction");
4880 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
4885 /// ::= ArithmeticOps TypeAndValue ',' Value {
4886 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
4888 LocTy Loc; Value *LHS, *RHS;
4889 if (ParseTypeAndValue(LHS, Loc, PFS) ||
4890 ParseToken(lltok::comma, "expected ',' in logical operation") ||
4891 ParseValue(LHS->getType(), RHS, PFS))
4894 if (!LHS->getType()->isIntOrIntVectorTy())
4895 return Error(Loc,"instruction requires integer or integer vector operands");
4897 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
4903 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
4904 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
4905 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
4907 // Parse the integer/fp comparison predicate.
4911 if (ParseCmpPredicate(Pred, Opc) ||
4912 ParseTypeAndValue(LHS, Loc, PFS) ||
4913 ParseToken(lltok::comma, "expected ',' after compare value") ||
4914 ParseValue(LHS->getType(), RHS, PFS))
4917 if (Opc == Instruction::FCmp) {
4918 if (!LHS->getType()->isFPOrFPVectorTy())
4919 return Error(Loc, "fcmp requires floating point operands");
4920 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
4922 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
4923 if (!LHS->getType()->isIntOrIntVectorTy() &&
4924 !LHS->getType()->getScalarType()->isPointerTy())
4925 return Error(Loc, "icmp requires integer operands");
4926 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
4931 //===----------------------------------------------------------------------===//
4932 // Other Instructions.
4933 //===----------------------------------------------------------------------===//
4937 /// ::= CastOpc TypeAndValue 'to' Type
4938 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
4942 Type *DestTy = nullptr;
4943 if (ParseTypeAndValue(Op, Loc, PFS) ||
4944 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
4948 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
4949 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
4950 return Error(Loc, "invalid cast opcode for cast from '" +
4951 getTypeString(Op->getType()) + "' to '" +
4952 getTypeString(DestTy) + "'");
4954 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
4959 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
4960 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
4962 Value *Op0, *Op1, *Op2;
4963 if (ParseTypeAndValue(Op0, Loc, PFS) ||
4964 ParseToken(lltok::comma, "expected ',' after select condition") ||
4965 ParseTypeAndValue(Op1, PFS) ||
4966 ParseToken(lltok::comma, "expected ',' after select value") ||
4967 ParseTypeAndValue(Op2, PFS))
4970 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
4971 return Error(Loc, Reason);
4973 Inst = SelectInst::Create(Op0, Op1, Op2);
4978 /// ::= 'va_arg' TypeAndValue ',' Type
4979 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
4981 Type *EltTy = nullptr;
4983 if (ParseTypeAndValue(Op, PFS) ||
4984 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
4985 ParseType(EltTy, TypeLoc))
4988 if (!EltTy->isFirstClassType())
4989 return Error(TypeLoc, "va_arg requires operand with first class type");
4991 Inst = new VAArgInst(Op, EltTy);
4995 /// ParseExtractElement
4996 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
4997 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
5000 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5001 ParseToken(lltok::comma, "expected ',' after extract value") ||
5002 ParseTypeAndValue(Op1, PFS))
5005 if (!ExtractElementInst::isValidOperands(Op0, Op1))
5006 return Error(Loc, "invalid extractelement operands");
5008 Inst = ExtractElementInst::Create(Op0, Op1);
5012 /// ParseInsertElement
5013 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5014 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
5016 Value *Op0, *Op1, *Op2;
5017 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5018 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5019 ParseTypeAndValue(Op1, PFS) ||
5020 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5021 ParseTypeAndValue(Op2, PFS))
5024 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
5025 return Error(Loc, "invalid insertelement operands");
5027 Inst = InsertElementInst::Create(Op0, Op1, Op2);
5031 /// ParseShuffleVector
5032 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5033 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
5035 Value *Op0, *Op1, *Op2;
5036 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5037 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
5038 ParseTypeAndValue(Op1, PFS) ||
5039 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
5040 ParseTypeAndValue(Op2, PFS))
5043 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
5044 return Error(Loc, "invalid shufflevector operands");
5046 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
5051 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
5052 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
5053 Type *Ty = nullptr; LocTy TypeLoc;
5056 if (ParseType(Ty, TypeLoc) ||
5057 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
5058 ParseValue(Ty, Op0, PFS) ||
5059 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5060 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
5061 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
5064 bool AteExtraComma = false;
5065 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
5067 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
5069 if (!EatIfPresent(lltok::comma))
5072 if (Lex.getKind() == lltok::MetadataVar) {
5073 AteExtraComma = true;
5077 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
5078 ParseValue(Ty, Op0, PFS) ||
5079 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5080 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
5081 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
5085 if (!Ty->isFirstClassType())
5086 return Error(TypeLoc, "phi node must have first class type");
5088 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
5089 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
5090 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
5092 return AteExtraComma ? InstExtraComma : InstNormal;
5096 /// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
5098 /// ::= 'catch' TypeAndValue
5100 /// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
5101 bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
5102 Type *Ty = nullptr; LocTy TyLoc;
5103 Value *PersFn; LocTy PersFnLoc;
5105 if (ParseType(Ty, TyLoc) ||
5106 ParseToken(lltok::kw_personality, "expected 'personality'") ||
5107 ParseTypeAndValue(PersFn, PersFnLoc, PFS))
5110 std::unique_ptr<LandingPadInst> LP(LandingPadInst::Create(Ty, PersFn, 0));
5111 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
5113 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
5114 LandingPadInst::ClauseType CT;
5115 if (EatIfPresent(lltok::kw_catch))
5116 CT = LandingPadInst::Catch;
5117 else if (EatIfPresent(lltok::kw_filter))
5118 CT = LandingPadInst::Filter;
5120 return TokError("expected 'catch' or 'filter' clause type");
5124 if (ParseTypeAndValue(V, VLoc, PFS))
5127 // A 'catch' type expects a non-array constant. A filter clause expects an
5129 if (CT == LandingPadInst::Catch) {
5130 if (isa<ArrayType>(V->getType()))
5131 Error(VLoc, "'catch' clause has an invalid type");
5133 if (!isa<ArrayType>(V->getType()))
5134 Error(VLoc, "'filter' clause has an invalid type");
5137 Constant *CV = dyn_cast<Constant>(V);
5139 return Error(VLoc, "clause argument must be a constant");
5143 Inst = LP.release();
5148 /// ::= 'call' OptionalCallingConv OptionalAttrs Type Value
5149 /// ParameterList OptionalAttrs
5150 /// ::= 'tail' 'call' OptionalCallingConv OptionalAttrs Type Value
5151 /// ParameterList OptionalAttrs
5152 /// ::= 'musttail' 'call' OptionalCallingConv OptionalAttrs Type Value
5153 /// ParameterList OptionalAttrs
5154 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
5155 CallInst::TailCallKind TCK) {
5156 AttrBuilder RetAttrs, FnAttrs;
5157 std::vector<unsigned> FwdRefAttrGrps;
5160 Type *RetType = nullptr;
5163 SmallVector<ParamInfo, 16> ArgList;
5164 LocTy CallLoc = Lex.getLoc();
5166 if ((TCK != CallInst::TCK_None &&
5167 ParseToken(lltok::kw_call, "expected 'tail call'")) ||
5168 ParseOptionalCallingConv(CC) ||
5169 ParseOptionalReturnAttrs(RetAttrs) ||
5170 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
5171 ParseValID(CalleeID) ||
5172 ParseParameterList(ArgList, PFS, TCK == CallInst::TCK_MustTail,
5173 PFS.getFunction().isVarArg()) ||
5174 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
5178 // If RetType is a non-function pointer type, then this is the short syntax
5179 // for the call, which means that RetType is just the return type. Infer the
5180 // rest of the function argument types from the arguments that are present.
5181 FunctionType *Ty = dyn_cast<FunctionType>(RetType);
5183 // Pull out the types of all of the arguments...
5184 std::vector<Type*> ParamTypes;
5185 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
5186 ParamTypes.push_back(ArgList[i].V->getType());
5188 if (!FunctionType::isValidReturnType(RetType))
5189 return Error(RetTypeLoc, "Invalid result type for LLVM function");
5191 Ty = FunctionType::get(RetType, ParamTypes, false);
5194 // Look up the callee.
5196 if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS))
5199 // Set up the Attribute for the function.
5200 SmallVector<AttributeSet, 8> Attrs;
5201 if (RetAttrs.hasAttributes())
5202 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5203 AttributeSet::ReturnIndex,
5206 SmallVector<Value*, 8> Args;
5208 // Loop through FunctionType's arguments and ensure they are specified
5209 // correctly. Also, gather any parameter attributes.
5210 FunctionType::param_iterator I = Ty->param_begin();
5211 FunctionType::param_iterator E = Ty->param_end();
5212 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
5213 Type *ExpectedTy = nullptr;
5216 } else if (!Ty->isVarArg()) {
5217 return Error(ArgList[i].Loc, "too many arguments specified");
5220 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
5221 return Error(ArgList[i].Loc, "argument is not of expected type '" +
5222 getTypeString(ExpectedTy) + "'");
5223 Args.push_back(ArgList[i].V);
5224 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
5225 AttrBuilder B(ArgList[i].Attrs, i + 1);
5226 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
5231 return Error(CallLoc, "not enough parameters specified for call");
5233 if (FnAttrs.hasAttributes()) {
5234 if (FnAttrs.hasAlignmentAttr())
5235 return Error(CallLoc, "call instructions may not have an alignment");
5237 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5238 AttributeSet::FunctionIndex,
5242 // Finish off the Attribute and check them
5243 AttributeSet PAL = AttributeSet::get(Context, Attrs);
5245 CallInst *CI = CallInst::Create(Ty, Callee, Args);
5246 CI->setTailCallKind(TCK);
5247 CI->setCallingConv(CC);
5248 CI->setAttributes(PAL);
5249 ForwardRefAttrGroups[CI] = FwdRefAttrGrps;
5254 //===----------------------------------------------------------------------===//
5255 // Memory Instructions.
5256 //===----------------------------------------------------------------------===//
5259 /// ::= 'alloca' 'inalloca'? Type (',' TypeAndValue)? (',' 'align' i32)?
5260 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
5261 Value *Size = nullptr;
5262 LocTy SizeLoc, TyLoc;
5263 unsigned Alignment = 0;
5266 bool IsInAlloca = EatIfPresent(lltok::kw_inalloca);
5268 if (ParseType(Ty, TyLoc)) return true;
5270 if (Ty->isFunctionTy() || !PointerType::isValidElementType(Ty))
5271 return Error(TyLoc, "invalid type for alloca");
5273 bool AteExtraComma = false;
5274 if (EatIfPresent(lltok::comma)) {
5275 if (Lex.getKind() == lltok::kw_align) {
5276 if (ParseOptionalAlignment(Alignment)) return true;
5277 } else if (Lex.getKind() == lltok::MetadataVar) {
5278 AteExtraComma = true;
5280 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
5281 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5286 if (Size && !Size->getType()->isIntegerTy())
5287 return Error(SizeLoc, "element count must have integer type");
5289 AllocaInst *AI = new AllocaInst(Ty, Size, Alignment);
5290 AI->setUsedWithInAlloca(IsInAlloca);
5292 return AteExtraComma ? InstExtraComma : InstNormal;
5296 /// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
5297 /// ::= 'load' 'atomic' 'volatile'? TypeAndValue
5298 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
5299 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
5300 Value *Val; LocTy Loc;
5301 unsigned Alignment = 0;
5302 bool AteExtraComma = false;
5303 bool isAtomic = false;
5304 AtomicOrdering Ordering = NotAtomic;
5305 SynchronizationScope Scope = CrossThread;
5307 if (Lex.getKind() == lltok::kw_atomic) {
5312 bool isVolatile = false;
5313 if (Lex.getKind() == lltok::kw_volatile) {
5319 LocTy ExplicitTypeLoc = Lex.getLoc();
5320 if (ParseType(Ty) ||
5321 ParseToken(lltok::comma, "expected comma after load's type") ||
5322 ParseTypeAndValue(Val, Loc, PFS) ||
5323 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
5324 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5327 if (!Val->getType()->isPointerTy() || !Ty->isFirstClassType())
5328 return Error(Loc, "load operand must be a pointer to a first class type");
5329 if (isAtomic && !Alignment)
5330 return Error(Loc, "atomic load must have explicit non-zero alignment");
5331 if (Ordering == Release || Ordering == AcquireRelease)
5332 return Error(Loc, "atomic load cannot use Release ordering");
5334 if (Ty != cast<PointerType>(Val->getType())->getElementType())
5335 return Error(ExplicitTypeLoc,
5336 "explicit pointee type doesn't match operand's pointee type");
5338 Inst = new LoadInst(Ty, Val, "", isVolatile, Alignment, Ordering, Scope);
5339 return AteExtraComma ? InstExtraComma : InstNormal;
5344 /// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
5345 /// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
5346 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
5347 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
5348 Value *Val, *Ptr; LocTy Loc, PtrLoc;
5349 unsigned Alignment = 0;
5350 bool AteExtraComma = false;
5351 bool isAtomic = false;
5352 AtomicOrdering Ordering = NotAtomic;
5353 SynchronizationScope Scope = CrossThread;
5355 if (Lex.getKind() == lltok::kw_atomic) {
5360 bool isVolatile = false;
5361 if (Lex.getKind() == lltok::kw_volatile) {
5366 if (ParseTypeAndValue(Val, Loc, PFS) ||
5367 ParseToken(lltok::comma, "expected ',' after store operand") ||
5368 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5369 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
5370 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5373 if (!Ptr->getType()->isPointerTy())
5374 return Error(PtrLoc, "store operand must be a pointer");
5375 if (!Val->getType()->isFirstClassType())
5376 return Error(Loc, "store operand must be a first class value");
5377 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
5378 return Error(Loc, "stored value and pointer type do not match");
5379 if (isAtomic && !Alignment)
5380 return Error(Loc, "atomic store must have explicit non-zero alignment");
5381 if (Ordering == Acquire || Ordering == AcquireRelease)
5382 return Error(Loc, "atomic store cannot use Acquire ordering");
5384 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, Scope);
5385 return AteExtraComma ? InstExtraComma : InstNormal;
5389 /// ::= 'cmpxchg' 'weak'? 'volatile'? TypeAndValue ',' TypeAndValue ','
5390 /// TypeAndValue 'singlethread'? AtomicOrdering AtomicOrdering
5391 int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
5392 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
5393 bool AteExtraComma = false;
5394 AtomicOrdering SuccessOrdering = NotAtomic;
5395 AtomicOrdering FailureOrdering = NotAtomic;
5396 SynchronizationScope Scope = CrossThread;
5397 bool isVolatile = false;
5398 bool isWeak = false;
5400 if (EatIfPresent(lltok::kw_weak))
5403 if (EatIfPresent(lltok::kw_volatile))
5406 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5407 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
5408 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
5409 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
5410 ParseTypeAndValue(New, NewLoc, PFS) ||
5411 ParseScopeAndOrdering(true /*Always atomic*/, Scope, SuccessOrdering) ||
5412 ParseOrdering(FailureOrdering))
5415 if (SuccessOrdering == Unordered || FailureOrdering == Unordered)
5416 return TokError("cmpxchg cannot be unordered");
5417 if (SuccessOrdering < FailureOrdering)
5418 return TokError("cmpxchg must be at least as ordered on success as failure");
5419 if (FailureOrdering == Release || FailureOrdering == AcquireRelease)
5420 return TokError("cmpxchg failure ordering cannot include release semantics");
5421 if (!Ptr->getType()->isPointerTy())
5422 return Error(PtrLoc, "cmpxchg operand must be a pointer");
5423 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
5424 return Error(CmpLoc, "compare value and pointer type do not match");
5425 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
5426 return Error(NewLoc, "new value and pointer type do not match");
5427 if (!New->getType()->isIntegerTy())
5428 return Error(NewLoc, "cmpxchg operand must be an integer");
5429 unsigned Size = New->getType()->getPrimitiveSizeInBits();
5430 if (Size < 8 || (Size & (Size - 1)))
5431 return Error(NewLoc, "cmpxchg operand must be power-of-two byte-sized"
5434 AtomicCmpXchgInst *CXI = new AtomicCmpXchgInst(
5435 Ptr, Cmp, New, SuccessOrdering, FailureOrdering, Scope);
5436 CXI->setVolatile(isVolatile);
5437 CXI->setWeak(isWeak);
5439 return AteExtraComma ? InstExtraComma : InstNormal;
5443 /// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
5444 /// 'singlethread'? AtomicOrdering
5445 int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
5446 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
5447 bool AteExtraComma = false;
5448 AtomicOrdering Ordering = NotAtomic;
5449 SynchronizationScope Scope = CrossThread;
5450 bool isVolatile = false;
5451 AtomicRMWInst::BinOp Operation;
5453 if (EatIfPresent(lltok::kw_volatile))
5456 switch (Lex.getKind()) {
5457 default: return TokError("expected binary operation in atomicrmw");
5458 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
5459 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
5460 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
5461 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
5462 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
5463 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
5464 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
5465 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
5466 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
5467 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
5468 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
5470 Lex.Lex(); // Eat the operation.
5472 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5473 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
5474 ParseTypeAndValue(Val, ValLoc, PFS) ||
5475 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
5478 if (Ordering == Unordered)
5479 return TokError("atomicrmw cannot be unordered");
5480 if (!Ptr->getType()->isPointerTy())
5481 return Error(PtrLoc, "atomicrmw operand must be a pointer");
5482 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
5483 return Error(ValLoc, "atomicrmw value and pointer type do not match");
5484 if (!Val->getType()->isIntegerTy())
5485 return Error(ValLoc, "atomicrmw operand must be an integer");
5486 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
5487 if (Size < 8 || (Size & (Size - 1)))
5488 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
5491 AtomicRMWInst *RMWI =
5492 new AtomicRMWInst(Operation, Ptr, Val, Ordering, Scope);
5493 RMWI->setVolatile(isVolatile);
5495 return AteExtraComma ? InstExtraComma : InstNormal;
5499 /// ::= 'fence' 'singlethread'? AtomicOrdering
5500 int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
5501 AtomicOrdering Ordering = NotAtomic;
5502 SynchronizationScope Scope = CrossThread;
5503 if (ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
5506 if (Ordering == Unordered)
5507 return TokError("fence cannot be unordered");
5508 if (Ordering == Monotonic)
5509 return TokError("fence cannot be monotonic");
5511 Inst = new FenceInst(Context, Ordering, Scope);
5515 /// ParseGetElementPtr
5516 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
5517 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
5518 Value *Ptr = nullptr;
5519 Value *Val = nullptr;
5522 bool InBounds = EatIfPresent(lltok::kw_inbounds);
5525 LocTy ExplicitTypeLoc = Lex.getLoc();
5526 if (ParseType(Ty) ||
5527 ParseToken(lltok::comma, "expected comma after getelementptr's type") ||
5528 ParseTypeAndValue(Ptr, Loc, PFS))
5531 Type *BaseType = Ptr->getType();
5532 PointerType *BasePointerType = dyn_cast<PointerType>(BaseType->getScalarType());
5533 if (!BasePointerType)
5534 return Error(Loc, "base of getelementptr must be a pointer");
5536 if (Ty != BasePointerType->getElementType())
5537 return Error(ExplicitTypeLoc,
5538 "explicit pointee type doesn't match operand's pointee type");
5540 SmallVector<Value*, 16> Indices;
5541 bool AteExtraComma = false;
5542 while (EatIfPresent(lltok::comma)) {
5543 if (Lex.getKind() == lltok::MetadataVar) {
5544 AteExtraComma = true;
5547 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
5548 if (!Val->getType()->getScalarType()->isIntegerTy())
5549 return Error(EltLoc, "getelementptr index must be an integer");
5550 if (Val->getType()->isVectorTy() != Ptr->getType()->isVectorTy())
5551 return Error(EltLoc, "getelementptr index type missmatch");
5552 if (Val->getType()->isVectorTy()) {
5553 unsigned ValNumEl = cast<VectorType>(Val->getType())->getNumElements();
5554 unsigned PtrNumEl = cast<VectorType>(Ptr->getType())->getNumElements();
5555 if (ValNumEl != PtrNumEl)
5556 return Error(EltLoc,
5557 "getelementptr vector index has a wrong number of elements");
5559 Indices.push_back(Val);
5562 SmallPtrSet<const Type*, 4> Visited;
5563 if (!Indices.empty() && !Ty->isSized(&Visited))
5564 return Error(Loc, "base element of getelementptr must be sized");
5566 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
5567 return Error(Loc, "invalid getelementptr indices");
5568 Inst = GetElementPtrInst::Create(Ty, Ptr, Indices);
5570 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
5571 return AteExtraComma ? InstExtraComma : InstNormal;
5574 /// ParseExtractValue
5575 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
5576 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
5577 Value *Val; LocTy Loc;
5578 SmallVector<unsigned, 4> Indices;
5580 if (ParseTypeAndValue(Val, Loc, PFS) ||
5581 ParseIndexList(Indices, AteExtraComma))
5584 if (!Val->getType()->isAggregateType())
5585 return Error(Loc, "extractvalue operand must be aggregate type");
5587 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
5588 return Error(Loc, "invalid indices for extractvalue");
5589 Inst = ExtractValueInst::Create(Val, Indices);
5590 return AteExtraComma ? InstExtraComma : InstNormal;
5593 /// ParseInsertValue
5594 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
5595 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
5596 Value *Val0, *Val1; LocTy Loc0, Loc1;
5597 SmallVector<unsigned, 4> Indices;
5599 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
5600 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
5601 ParseTypeAndValue(Val1, Loc1, PFS) ||
5602 ParseIndexList(Indices, AteExtraComma))
5605 if (!Val0->getType()->isAggregateType())
5606 return Error(Loc0, "insertvalue operand must be aggregate type");
5608 Type *IndexedType = ExtractValueInst::getIndexedType(Val0->getType(), Indices);
5610 return Error(Loc0, "invalid indices for insertvalue");
5611 if (IndexedType != Val1->getType())
5612 return Error(Loc1, "insertvalue operand and field disagree in type: '" +
5613 getTypeString(Val1->getType()) + "' instead of '" +
5614 getTypeString(IndexedType) + "'");
5615 Inst = InsertValueInst::Create(Val0, Val1, Indices);
5616 return AteExtraComma ? InstExtraComma : InstNormal;
5619 //===----------------------------------------------------------------------===//
5620 // Embedded metadata.
5621 //===----------------------------------------------------------------------===//
5623 /// ParseMDNodeVector
5624 /// ::= { Element (',' Element)* }
5626 /// ::= 'null' | TypeAndValue
5627 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Metadata *> &Elts) {
5628 if (ParseToken(lltok::lbrace, "expected '{' here"))
5631 // Check for an empty list.
5632 if (EatIfPresent(lltok::rbrace))
5636 // Null is a special case since it is typeless.
5637 if (EatIfPresent(lltok::kw_null)) {
5638 Elts.push_back(nullptr);
5643 if (ParseMetadata(MD, nullptr))
5646 } while (EatIfPresent(lltok::comma));
5648 return ParseToken(lltok::rbrace, "expected end of metadata node");
5651 //===----------------------------------------------------------------------===//
5652 // Use-list order directives.
5653 //===----------------------------------------------------------------------===//
5654 bool LLParser::sortUseListOrder(Value *V, ArrayRef<unsigned> Indexes,
5657 return Error(Loc, "value has no uses");
5659 unsigned NumUses = 0;
5660 SmallDenseMap<const Use *, unsigned, 16> Order;
5661 for (const Use &U : V->uses()) {
5662 if (++NumUses > Indexes.size())
5664 Order[&U] = Indexes[NumUses - 1];
5667 return Error(Loc, "value only has one use");
5668 if (Order.size() != Indexes.size() || NumUses > Indexes.size())
5669 return Error(Loc, "wrong number of indexes, expected " +
5670 Twine(std::distance(V->use_begin(), V->use_end())));
5672 V->sortUseList([&](const Use &L, const Use &R) {
5673 return Order.lookup(&L) < Order.lookup(&R);
5678 /// ParseUseListOrderIndexes
5679 /// ::= '{' uint32 (',' uint32)+ '}'
5680 bool LLParser::ParseUseListOrderIndexes(SmallVectorImpl<unsigned> &Indexes) {
5681 SMLoc Loc = Lex.getLoc();
5682 if (ParseToken(lltok::lbrace, "expected '{' here"))
5684 if (Lex.getKind() == lltok::rbrace)
5685 return Lex.Error("expected non-empty list of uselistorder indexes");
5687 // Use Offset, Max, and IsOrdered to check consistency of indexes. The
5688 // indexes should be distinct numbers in the range [0, size-1], and should
5690 unsigned Offset = 0;
5692 bool IsOrdered = true;
5693 assert(Indexes.empty() && "Expected empty order vector");
5696 if (ParseUInt32(Index))
5699 // Update consistency checks.
5700 Offset += Index - Indexes.size();
5701 Max = std::max(Max, Index);
5702 IsOrdered &= Index == Indexes.size();
5704 Indexes.push_back(Index);
5705 } while (EatIfPresent(lltok::comma));
5707 if (ParseToken(lltok::rbrace, "expected '}' here"))
5710 if (Indexes.size() < 2)
5711 return Error(Loc, "expected >= 2 uselistorder indexes");
5712 if (Offset != 0 || Max >= Indexes.size())
5713 return Error(Loc, "expected distinct uselistorder indexes in range [0, size)");
5715 return Error(Loc, "expected uselistorder indexes to change the order");
5720 /// ParseUseListOrder
5721 /// ::= 'uselistorder' Type Value ',' UseListOrderIndexes
5722 bool LLParser::ParseUseListOrder(PerFunctionState *PFS) {
5723 SMLoc Loc = Lex.getLoc();
5724 if (ParseToken(lltok::kw_uselistorder, "expected uselistorder directive"))
5728 SmallVector<unsigned, 16> Indexes;
5729 if (ParseTypeAndValue(V, PFS) ||
5730 ParseToken(lltok::comma, "expected comma in uselistorder directive") ||
5731 ParseUseListOrderIndexes(Indexes))
5734 return sortUseListOrder(V, Indexes, Loc);
5737 /// ParseUseListOrderBB
5738 /// ::= 'uselistorder_bb' @foo ',' %bar ',' UseListOrderIndexes
5739 bool LLParser::ParseUseListOrderBB() {
5740 assert(Lex.getKind() == lltok::kw_uselistorder_bb);
5741 SMLoc Loc = Lex.getLoc();
5745 SmallVector<unsigned, 16> Indexes;
5746 if (ParseValID(Fn) ||
5747 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
5748 ParseValID(Label) ||
5749 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
5750 ParseUseListOrderIndexes(Indexes))
5753 // Check the function.
5755 if (Fn.Kind == ValID::t_GlobalName)
5756 GV = M->getNamedValue(Fn.StrVal);
5757 else if (Fn.Kind == ValID::t_GlobalID)
5758 GV = Fn.UIntVal < NumberedVals.size() ? NumberedVals[Fn.UIntVal] : nullptr;
5760 return Error(Fn.Loc, "expected function name in uselistorder_bb");
5762 return Error(Fn.Loc, "invalid function forward reference in uselistorder_bb");
5763 auto *F = dyn_cast<Function>(GV);
5765 return Error(Fn.Loc, "expected function name in uselistorder_bb");
5766 if (F->isDeclaration())
5767 return Error(Fn.Loc, "invalid declaration in uselistorder_bb");
5769 // Check the basic block.
5770 if (Label.Kind == ValID::t_LocalID)
5771 return Error(Label.Loc, "invalid numeric label in uselistorder_bb");
5772 if (Label.Kind != ValID::t_LocalName)
5773 return Error(Label.Loc, "expected basic block name in uselistorder_bb");
5774 Value *V = F->getValueSymbolTable().lookup(Label.StrVal);
5776 return Error(Label.Loc, "invalid basic block in uselistorder_bb");
5777 if (!isa<BasicBlock>(V))
5778 return Error(Label.Loc, "expected basic block in uselistorder_bb");
5780 return sortUseListOrder(V, Indexes, Loc);