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 '{' ...
364 bool LLParser::ParseDefine() {
365 assert(Lex.getKind() == lltok::kw_define);
369 return ParseFunctionHeader(F, true) ||
370 ParseFunctionBody(*F);
376 bool LLParser::ParseGlobalType(bool &IsConstant) {
377 if (Lex.getKind() == lltok::kw_constant)
379 else if (Lex.getKind() == lltok::kw_global)
383 return TokError("expected 'global' or 'constant'");
389 /// ParseUnnamedGlobal:
390 /// OptionalVisibility ALIAS ...
391 /// OptionalLinkage OptionalVisibility OptionalDLLStorageClass
392 /// ... -> global variable
393 /// GlobalID '=' OptionalVisibility ALIAS ...
394 /// GlobalID '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
395 /// ... -> global variable
396 bool LLParser::ParseUnnamedGlobal() {
397 unsigned VarID = NumberedVals.size();
399 LocTy NameLoc = Lex.getLoc();
401 // Handle the GlobalID form.
402 if (Lex.getKind() == lltok::GlobalID) {
403 if (Lex.getUIntVal() != VarID)
404 return Error(Lex.getLoc(), "variable expected to be numbered '%" +
406 Lex.Lex(); // eat GlobalID;
408 if (ParseToken(lltok::equal, "expected '=' after name"))
413 unsigned Linkage, Visibility, DLLStorageClass;
414 GlobalVariable::ThreadLocalMode TLM;
416 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
417 ParseOptionalVisibility(Visibility) ||
418 ParseOptionalDLLStorageClass(DLLStorageClass) ||
419 ParseOptionalThreadLocal(TLM) ||
420 parseOptionalUnnamedAddr(UnnamedAddr))
423 if (Lex.getKind() != lltok::kw_alias)
424 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility,
425 DLLStorageClass, TLM, UnnamedAddr);
426 return ParseAlias(Name, NameLoc, Linkage, Visibility, DLLStorageClass, TLM,
430 /// ParseNamedGlobal:
431 /// GlobalVar '=' OptionalVisibility ALIAS ...
432 /// GlobalVar '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
433 /// ... -> global variable
434 bool LLParser::ParseNamedGlobal() {
435 assert(Lex.getKind() == lltok::GlobalVar);
436 LocTy NameLoc = Lex.getLoc();
437 std::string Name = Lex.getStrVal();
441 unsigned Linkage, Visibility, DLLStorageClass;
442 GlobalVariable::ThreadLocalMode TLM;
444 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
445 ParseOptionalLinkage(Linkage, HasLinkage) ||
446 ParseOptionalVisibility(Visibility) ||
447 ParseOptionalDLLStorageClass(DLLStorageClass) ||
448 ParseOptionalThreadLocal(TLM) ||
449 parseOptionalUnnamedAddr(UnnamedAddr))
452 if (Lex.getKind() != lltok::kw_alias)
453 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility,
454 DLLStorageClass, TLM, UnnamedAddr);
456 return ParseAlias(Name, NameLoc, Linkage, Visibility, DLLStorageClass, TLM,
460 bool LLParser::parseComdat() {
461 assert(Lex.getKind() == lltok::ComdatVar);
462 std::string Name = Lex.getStrVal();
463 LocTy NameLoc = Lex.getLoc();
466 if (ParseToken(lltok::equal, "expected '=' here"))
469 if (ParseToken(lltok::kw_comdat, "expected comdat keyword"))
470 return TokError("expected comdat type");
472 Comdat::SelectionKind SK;
473 switch (Lex.getKind()) {
475 return TokError("unknown selection kind");
479 case lltok::kw_exactmatch:
480 SK = Comdat::ExactMatch;
482 case lltok::kw_largest:
483 SK = Comdat::Largest;
485 case lltok::kw_noduplicates:
486 SK = Comdat::NoDuplicates;
488 case lltok::kw_samesize:
489 SK = Comdat::SameSize;
494 // See if the comdat was forward referenced, if so, use the comdat.
495 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
496 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
497 if (I != ComdatSymTab.end() && !ForwardRefComdats.erase(Name))
498 return Error(NameLoc, "redefinition of comdat '$" + Name + "'");
501 if (I != ComdatSymTab.end())
504 C = M->getOrInsertComdat(Name);
505 C->setSelectionKind(SK);
511 // ::= '!' STRINGCONSTANT
512 bool LLParser::ParseMDString(MDString *&Result) {
514 if (ParseStringConstant(Str)) return true;
515 llvm::UpgradeMDStringConstant(Str);
516 Result = MDString::get(Context, Str);
521 // ::= '!' MDNodeNumber
522 bool LLParser::ParseMDNodeID(MDNode *&Result) {
523 // !{ ..., !42, ... }
525 if (ParseUInt32(MID))
528 // If not a forward reference, just return it now.
529 if (NumberedMetadata.count(MID)) {
530 Result = NumberedMetadata[MID];
534 // Otherwise, create MDNode forward reference.
535 auto &FwdRef = ForwardRefMDNodes[MID];
536 FwdRef = std::make_pair(MDTuple::getTemporary(Context, None), Lex.getLoc());
538 Result = FwdRef.first.get();
539 NumberedMetadata[MID].reset(Result);
543 /// ParseNamedMetadata:
544 /// !foo = !{ !1, !2 }
545 bool LLParser::ParseNamedMetadata() {
546 assert(Lex.getKind() == lltok::MetadataVar);
547 std::string Name = Lex.getStrVal();
550 if (ParseToken(lltok::equal, "expected '=' here") ||
551 ParseToken(lltok::exclaim, "Expected '!' here") ||
552 ParseToken(lltok::lbrace, "Expected '{' here"))
555 NamedMDNode *NMD = M->getOrInsertNamedMetadata(Name);
556 if (Lex.getKind() != lltok::rbrace)
558 if (ParseToken(lltok::exclaim, "Expected '!' here"))
562 if (ParseMDNodeID(N)) return true;
564 } while (EatIfPresent(lltok::comma));
566 if (ParseToken(lltok::rbrace, "expected end of metadata node"))
572 /// ParseStandaloneMetadata:
574 bool LLParser::ParseStandaloneMetadata() {
575 assert(Lex.getKind() == lltok::exclaim);
577 unsigned MetadataID = 0;
580 if (ParseUInt32(MetadataID) ||
581 ParseToken(lltok::equal, "expected '=' here"))
584 // Detect common error, from old metadata syntax.
585 if (Lex.getKind() == lltok::Type)
586 return TokError("unexpected type in metadata definition");
588 bool IsDistinct = EatIfPresent(lltok::kw_distinct);
589 if (Lex.getKind() == lltok::MetadataVar) {
590 if (ParseSpecializedMDNode(Init, IsDistinct))
592 } else if (ParseToken(lltok::exclaim, "Expected '!' here") ||
593 ParseMDTuple(Init, IsDistinct))
596 // See if this was forward referenced, if so, handle it.
597 auto FI = ForwardRefMDNodes.find(MetadataID);
598 if (FI != ForwardRefMDNodes.end()) {
599 FI->second.first->replaceAllUsesWith(Init);
600 ForwardRefMDNodes.erase(FI);
602 assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work");
604 if (NumberedMetadata.count(MetadataID))
605 return TokError("Metadata id is already used");
606 NumberedMetadata[MetadataID].reset(Init);
612 static bool isValidVisibilityForLinkage(unsigned V, unsigned L) {
613 return !GlobalValue::isLocalLinkage((GlobalValue::LinkageTypes)L) ||
614 (GlobalValue::VisibilityTypes)V == GlobalValue::DefaultVisibility;
618 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility
619 /// OptionalDLLStorageClass OptionalThreadLocal
620 /// OptionalUnNammedAddr 'alias' Aliasee
625 /// Everything through OptionalUnNammedAddr has already been parsed.
627 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc, unsigned L,
628 unsigned Visibility, unsigned DLLStorageClass,
629 GlobalVariable::ThreadLocalMode TLM,
631 assert(Lex.getKind() == lltok::kw_alias);
634 GlobalValue::LinkageTypes Linkage = (GlobalValue::LinkageTypes) L;
636 if(!GlobalAlias::isValidLinkage(Linkage))
637 return Error(NameLoc, "invalid linkage type for alias");
639 if (!isValidVisibilityForLinkage(Visibility, L))
640 return Error(NameLoc,
641 "symbol with local linkage must have default visibility");
644 LocTy AliaseeLoc = Lex.getLoc();
645 if (Lex.getKind() != lltok::kw_bitcast &&
646 Lex.getKind() != lltok::kw_getelementptr &&
647 Lex.getKind() != lltok::kw_addrspacecast &&
648 Lex.getKind() != lltok::kw_inttoptr) {
649 if (ParseGlobalTypeAndValue(Aliasee))
652 // The bitcast dest type is not present, it is implied by the dest type.
656 if (ID.Kind != ValID::t_Constant)
657 return Error(AliaseeLoc, "invalid aliasee");
658 Aliasee = ID.ConstantVal;
661 Type *AliaseeType = Aliasee->getType();
662 auto *PTy = dyn_cast<PointerType>(AliaseeType);
664 return Error(AliaseeLoc, "An alias must have pointer type");
665 Type *Ty = PTy->getElementType();
666 unsigned AddrSpace = PTy->getAddressSpace();
668 // Okay, create the alias but do not insert it into the module yet.
669 std::unique_ptr<GlobalAlias> GA(
670 GlobalAlias::create(Ty, AddrSpace, (GlobalValue::LinkageTypes)Linkage,
671 Name, Aliasee, /*Parent*/ nullptr));
672 GA->setThreadLocalMode(TLM);
673 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
674 GA->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
675 GA->setUnnamedAddr(UnnamedAddr);
677 // See if this value already exists in the symbol table. If so, it is either
678 // a redefinition or a definition of a forward reference.
679 if (GlobalValue *Val = M->getNamedValue(Name)) {
680 // See if this was a redefinition. If so, there is no entry in
682 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
683 I = ForwardRefVals.find(Name);
684 if (I == ForwardRefVals.end())
685 return Error(NameLoc, "redefinition of global named '@" + Name + "'");
687 // Otherwise, this was a definition of forward ref. Verify that types
689 if (Val->getType() != GA->getType())
690 return Error(NameLoc,
691 "forward reference and definition of alias have different types");
693 // If they agree, just RAUW the old value with the alias and remove the
695 Val->replaceAllUsesWith(GA.get());
696 Val->eraseFromParent();
697 ForwardRefVals.erase(I);
700 // Insert into the module, we know its name won't collide now.
701 M->getAliasList().push_back(GA.get());
702 assert(GA->getName() == Name && "Should not be a name conflict!");
704 // The module owns this now
711 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
712 /// OptionalThreadLocal OptionalUnNammedAddr OptionalAddrSpace
713 /// OptionalExternallyInitialized GlobalType Type Const
714 /// ::= OptionalLinkage OptionalVisibility OptionalDLLStorageClass
715 /// OptionalThreadLocal OptionalUnNammedAddr OptionalAddrSpace
716 /// OptionalExternallyInitialized GlobalType Type Const
718 /// Everything up to and including OptionalUnNammedAddr has been parsed
721 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
722 unsigned Linkage, bool HasLinkage,
723 unsigned Visibility, unsigned DLLStorageClass,
724 GlobalVariable::ThreadLocalMode TLM,
726 if (!isValidVisibilityForLinkage(Visibility, Linkage))
727 return Error(NameLoc,
728 "symbol with local linkage must have default visibility");
731 bool IsConstant, IsExternallyInitialized;
732 LocTy IsExternallyInitializedLoc;
736 if (ParseOptionalAddrSpace(AddrSpace) ||
737 ParseOptionalToken(lltok::kw_externally_initialized,
738 IsExternallyInitialized,
739 &IsExternallyInitializedLoc) ||
740 ParseGlobalType(IsConstant) ||
741 ParseType(Ty, TyLoc))
744 // If the linkage is specified and is external, then no initializer is
746 Constant *Init = nullptr;
747 if (!HasLinkage || (Linkage != GlobalValue::ExternalWeakLinkage &&
748 Linkage != GlobalValue::ExternalLinkage)) {
749 if (ParseGlobalValue(Ty, Init))
753 if (Ty->isFunctionTy() || !PointerType::isValidElementType(Ty))
754 return Error(TyLoc, "invalid type for global variable");
756 GlobalValue *GVal = nullptr;
758 // See if the global was forward referenced, if so, use the global.
760 GVal = M->getNamedValue(Name);
762 if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
763 return Error(NameLoc, "redefinition of global '@" + Name + "'");
766 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
767 I = ForwardRefValIDs.find(NumberedVals.size());
768 if (I != ForwardRefValIDs.end()) {
769 GVal = I->second.first;
770 ForwardRefValIDs.erase(I);
776 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, nullptr,
777 Name, nullptr, GlobalVariable::NotThreadLocal,
780 if (GVal->getType()->getElementType() != Ty)
782 "forward reference and definition of global have different types");
784 GV = cast<GlobalVariable>(GVal);
786 // Move the forward-reference to the correct spot in the module.
787 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
791 NumberedVals.push_back(GV);
793 // Set the parsed properties on the global.
795 GV->setInitializer(Init);
796 GV->setConstant(IsConstant);
797 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
798 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
799 GV->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
800 GV->setExternallyInitialized(IsExternallyInitialized);
801 GV->setThreadLocalMode(TLM);
802 GV->setUnnamedAddr(UnnamedAddr);
804 // Parse attributes on the global.
805 while (Lex.getKind() == lltok::comma) {
808 if (Lex.getKind() == lltok::kw_section) {
810 GV->setSection(Lex.getStrVal());
811 if (ParseToken(lltok::StringConstant, "expected global section string"))
813 } else if (Lex.getKind() == lltok::kw_align) {
815 if (ParseOptionalAlignment(Alignment)) return true;
816 GV->setAlignment(Alignment);
819 if (parseOptionalComdat(Name, C))
824 return TokError("unknown global variable property!");
831 /// ParseUnnamedAttrGrp
832 /// ::= 'attributes' AttrGrpID '=' '{' AttrValPair+ '}'
833 bool LLParser::ParseUnnamedAttrGrp() {
834 assert(Lex.getKind() == lltok::kw_attributes);
835 LocTy AttrGrpLoc = Lex.getLoc();
838 if (Lex.getKind() != lltok::AttrGrpID)
839 return TokError("expected attribute group id");
841 unsigned VarID = Lex.getUIntVal();
842 std::vector<unsigned> unused;
846 if (ParseToken(lltok::equal, "expected '=' here") ||
847 ParseToken(lltok::lbrace, "expected '{' here") ||
848 ParseFnAttributeValuePairs(NumberedAttrBuilders[VarID], unused, true,
850 ParseToken(lltok::rbrace, "expected end of attribute group"))
853 if (!NumberedAttrBuilders[VarID].hasAttributes())
854 return Error(AttrGrpLoc, "attribute group has no attributes");
859 /// ParseFnAttributeValuePairs
860 /// ::= <attr> | <attr> '=' <value>
861 bool LLParser::ParseFnAttributeValuePairs(AttrBuilder &B,
862 std::vector<unsigned> &FwdRefAttrGrps,
863 bool inAttrGrp, LocTy &BuiltinLoc) {
864 bool HaveError = false;
869 lltok::Kind Token = Lex.getKind();
870 if (Token == lltok::kw_builtin)
871 BuiltinLoc = Lex.getLoc();
874 if (!inAttrGrp) return HaveError;
875 return Error(Lex.getLoc(), "unterminated attribute group");
880 case lltok::AttrGrpID: {
881 // Allow a function to reference an attribute group:
883 // define void @foo() #1 { ... }
887 "cannot have an attribute group reference in an attribute group");
889 unsigned AttrGrpNum = Lex.getUIntVal();
890 if (inAttrGrp) break;
892 // Save the reference to the attribute group. We'll fill it in later.
893 FwdRefAttrGrps.push_back(AttrGrpNum);
896 // Target-dependent attributes:
897 case lltok::StringConstant: {
898 std::string Attr = Lex.getStrVal();
901 if (EatIfPresent(lltok::equal) &&
902 ParseStringConstant(Val))
905 B.addAttribute(Attr, Val);
909 // Target-independent attributes:
910 case lltok::kw_align: {
911 // As a hack, we allow function alignment to be initially parsed as an
912 // attribute on a function declaration/definition or added to an attribute
913 // group and later moved to the alignment field.
917 if (ParseToken(lltok::equal, "expected '=' here") ||
918 ParseUInt32(Alignment))
921 if (ParseOptionalAlignment(Alignment))
924 B.addAlignmentAttr(Alignment);
927 case lltok::kw_alignstack: {
931 if (ParseToken(lltok::equal, "expected '=' here") ||
932 ParseUInt32(Alignment))
935 if (ParseOptionalStackAlignment(Alignment))
938 B.addStackAlignmentAttr(Alignment);
941 case lltok::kw_alwaysinline: B.addAttribute(Attribute::AlwaysInline); break;
942 case lltok::kw_builtin: B.addAttribute(Attribute::Builtin); break;
943 case lltok::kw_cold: B.addAttribute(Attribute::Cold); break;
944 case lltok::kw_inlinehint: B.addAttribute(Attribute::InlineHint); break;
945 case lltok::kw_jumptable: B.addAttribute(Attribute::JumpTable); break;
946 case lltok::kw_minsize: B.addAttribute(Attribute::MinSize); break;
947 case lltok::kw_naked: B.addAttribute(Attribute::Naked); break;
948 case lltok::kw_nobuiltin: B.addAttribute(Attribute::NoBuiltin); break;
949 case lltok::kw_noduplicate: B.addAttribute(Attribute::NoDuplicate); break;
950 case lltok::kw_noimplicitfloat: B.addAttribute(Attribute::NoImplicitFloat); break;
951 case lltok::kw_noinline: B.addAttribute(Attribute::NoInline); break;
952 case lltok::kw_nonlazybind: B.addAttribute(Attribute::NonLazyBind); break;
953 case lltok::kw_noredzone: B.addAttribute(Attribute::NoRedZone); break;
954 case lltok::kw_noreturn: B.addAttribute(Attribute::NoReturn); break;
955 case lltok::kw_nounwind: B.addAttribute(Attribute::NoUnwind); break;
956 case lltok::kw_optnone: B.addAttribute(Attribute::OptimizeNone); break;
957 case lltok::kw_optsize: B.addAttribute(Attribute::OptimizeForSize); break;
958 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
959 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
960 case lltok::kw_returns_twice: B.addAttribute(Attribute::ReturnsTwice); break;
961 case lltok::kw_ssp: B.addAttribute(Attribute::StackProtect); break;
962 case lltok::kw_sspreq: B.addAttribute(Attribute::StackProtectReq); break;
963 case lltok::kw_sspstrong: B.addAttribute(Attribute::StackProtectStrong); break;
964 case lltok::kw_sanitize_address: B.addAttribute(Attribute::SanitizeAddress); break;
965 case lltok::kw_sanitize_thread: B.addAttribute(Attribute::SanitizeThread); break;
966 case lltok::kw_sanitize_memory: B.addAttribute(Attribute::SanitizeMemory); break;
967 case lltok::kw_uwtable: B.addAttribute(Attribute::UWTable); break;
970 case lltok::kw_inreg:
971 case lltok::kw_signext:
972 case lltok::kw_zeroext:
975 "invalid use of attribute on a function");
977 case lltok::kw_byval:
978 case lltok::kw_dereferenceable:
979 case lltok::kw_dereferenceable_or_null:
980 case lltok::kw_inalloca:
982 case lltok::kw_noalias:
983 case lltok::kw_nocapture:
984 case lltok::kw_nonnull:
985 case lltok::kw_returned:
989 "invalid use of parameter-only attribute on a function");
997 //===----------------------------------------------------------------------===//
998 // GlobalValue Reference/Resolution Routines.
999 //===----------------------------------------------------------------------===//
1001 /// GetGlobalVal - Get a value with the specified name or ID, creating a
1002 /// forward reference record if needed. This can return null if the value
1003 /// exists but does not have the right type.
1004 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
1006 PointerType *PTy = dyn_cast<PointerType>(Ty);
1008 Error(Loc, "global variable reference must have pointer type");
1012 // Look this name up in the normal function symbol table.
1014 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
1016 // If this is a forward reference for the value, see if we already created a
1017 // forward ref record.
1019 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
1020 I = ForwardRefVals.find(Name);
1021 if (I != ForwardRefVals.end())
1022 Val = I->second.first;
1025 // If we have the value in the symbol table or fwd-ref table, return it.
1027 if (Val->getType() == Ty) return Val;
1028 Error(Loc, "'@" + Name + "' defined with type '" +
1029 getTypeString(Val->getType()) + "'");
1033 // Otherwise, create a new forward reference for this value and remember it.
1034 GlobalValue *FwdVal;
1035 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1036 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
1038 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1039 GlobalValue::ExternalWeakLinkage, nullptr, Name,
1040 nullptr, GlobalVariable::NotThreadLocal,
1041 PTy->getAddressSpace());
1043 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1047 GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
1048 PointerType *PTy = dyn_cast<PointerType>(Ty);
1050 Error(Loc, "global variable reference must have pointer type");
1054 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
1056 // If this is a forward reference for the value, see if we already created a
1057 // forward ref record.
1059 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
1060 I = ForwardRefValIDs.find(ID);
1061 if (I != ForwardRefValIDs.end())
1062 Val = I->second.first;
1065 // If we have the value in the symbol table or fwd-ref table, return it.
1067 if (Val->getType() == Ty) return Val;
1068 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
1069 getTypeString(Val->getType()) + "'");
1073 // Otherwise, create a new forward reference for this value and remember it.
1074 GlobalValue *FwdVal;
1075 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1076 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
1078 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1079 GlobalValue::ExternalWeakLinkage, nullptr, "");
1081 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1086 //===----------------------------------------------------------------------===//
1087 // Comdat Reference/Resolution Routines.
1088 //===----------------------------------------------------------------------===//
1090 Comdat *LLParser::getComdat(const std::string &Name, LocTy Loc) {
1091 // Look this name up in the comdat symbol table.
1092 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
1093 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
1094 if (I != ComdatSymTab.end())
1097 // Otherwise, create a new forward reference for this value and remember it.
1098 Comdat *C = M->getOrInsertComdat(Name);
1099 ForwardRefComdats[Name] = Loc;
1104 //===----------------------------------------------------------------------===//
1106 //===----------------------------------------------------------------------===//
1108 /// ParseToken - If the current token has the specified kind, eat it and return
1109 /// success. Otherwise, emit the specified error and return failure.
1110 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
1111 if (Lex.getKind() != T)
1112 return TokError(ErrMsg);
1117 /// ParseStringConstant
1118 /// ::= StringConstant
1119 bool LLParser::ParseStringConstant(std::string &Result) {
1120 if (Lex.getKind() != lltok::StringConstant)
1121 return TokError("expected string constant");
1122 Result = Lex.getStrVal();
1129 bool LLParser::ParseUInt32(unsigned &Val) {
1130 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1131 return TokError("expected integer");
1132 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
1133 if (Val64 != unsigned(Val64))
1134 return TokError("expected 32-bit integer (too large)");
1142 bool LLParser::ParseUInt64(uint64_t &Val) {
1143 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1144 return TokError("expected integer");
1145 Val = Lex.getAPSIntVal().getLimitedValue();
1151 /// := 'localdynamic'
1152 /// := 'initialexec'
1154 bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
1155 switch (Lex.getKind()) {
1157 return TokError("expected localdynamic, initialexec or localexec");
1158 case lltok::kw_localdynamic:
1159 TLM = GlobalVariable::LocalDynamicTLSModel;
1161 case lltok::kw_initialexec:
1162 TLM = GlobalVariable::InitialExecTLSModel;
1164 case lltok::kw_localexec:
1165 TLM = GlobalVariable::LocalExecTLSModel;
1173 /// ParseOptionalThreadLocal
1175 /// := 'thread_local'
1176 /// := 'thread_local' '(' tlsmodel ')'
1177 bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
1178 TLM = GlobalVariable::NotThreadLocal;
1179 if (!EatIfPresent(lltok::kw_thread_local))
1182 TLM = GlobalVariable::GeneralDynamicTLSModel;
1183 if (Lex.getKind() == lltok::lparen) {
1185 return ParseTLSModel(TLM) ||
1186 ParseToken(lltok::rparen, "expected ')' after thread local model");
1191 /// ParseOptionalAddrSpace
1193 /// := 'addrspace' '(' uint32 ')'
1194 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
1196 if (!EatIfPresent(lltok::kw_addrspace))
1198 return ParseToken(lltok::lparen, "expected '(' in address space") ||
1199 ParseUInt32(AddrSpace) ||
1200 ParseToken(lltok::rparen, "expected ')' in address space");
1203 /// ParseOptionalParamAttrs - Parse a potentially empty list of parameter attributes.
1204 bool LLParser::ParseOptionalParamAttrs(AttrBuilder &B) {
1205 bool HaveError = false;
1210 lltok::Kind Token = Lex.getKind();
1212 default: // End of attributes.
1214 case lltok::kw_align: {
1216 if (ParseOptionalAlignment(Alignment))
1218 B.addAlignmentAttr(Alignment);
1221 case lltok::kw_byval: B.addAttribute(Attribute::ByVal); break;
1222 case lltok::kw_dereferenceable: {
1224 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1226 B.addDereferenceableAttr(Bytes);
1229 case lltok::kw_dereferenceable_or_null: {
1231 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1233 B.addDereferenceableOrNullAttr(Bytes);
1236 case lltok::kw_inalloca: B.addAttribute(Attribute::InAlloca); break;
1237 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1238 case lltok::kw_nest: B.addAttribute(Attribute::Nest); break;
1239 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1240 case lltok::kw_nocapture: B.addAttribute(Attribute::NoCapture); break;
1241 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1242 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1243 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1244 case lltok::kw_returned: B.addAttribute(Attribute::Returned); break;
1245 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1246 case lltok::kw_sret: B.addAttribute(Attribute::StructRet); break;
1247 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1249 case lltok::kw_alignstack:
1250 case lltok::kw_alwaysinline:
1251 case lltok::kw_builtin:
1252 case lltok::kw_inlinehint:
1253 case lltok::kw_jumptable:
1254 case lltok::kw_minsize:
1255 case lltok::kw_naked:
1256 case lltok::kw_nobuiltin:
1257 case lltok::kw_noduplicate:
1258 case lltok::kw_noimplicitfloat:
1259 case lltok::kw_noinline:
1260 case lltok::kw_nonlazybind:
1261 case lltok::kw_noredzone:
1262 case lltok::kw_noreturn:
1263 case lltok::kw_nounwind:
1264 case lltok::kw_optnone:
1265 case lltok::kw_optsize:
1266 case lltok::kw_returns_twice:
1267 case lltok::kw_sanitize_address:
1268 case lltok::kw_sanitize_memory:
1269 case lltok::kw_sanitize_thread:
1271 case lltok::kw_sspreq:
1272 case lltok::kw_sspstrong:
1273 case lltok::kw_uwtable:
1274 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1282 /// ParseOptionalReturnAttrs - Parse a potentially empty list of return attributes.
1283 bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
1284 bool HaveError = false;
1289 lltok::Kind Token = Lex.getKind();
1291 default: // End of attributes.
1293 case lltok::kw_dereferenceable: {
1295 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1297 B.addDereferenceableAttr(Bytes);
1300 case lltok::kw_dereferenceable_or_null: {
1302 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1304 B.addDereferenceableOrNullAttr(Bytes);
1307 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1308 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1309 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1310 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1311 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1314 case lltok::kw_align:
1315 case lltok::kw_byval:
1316 case lltok::kw_inalloca:
1317 case lltok::kw_nest:
1318 case lltok::kw_nocapture:
1319 case lltok::kw_returned:
1320 case lltok::kw_sret:
1321 HaveError |= Error(Lex.getLoc(), "invalid use of parameter-only attribute");
1324 case lltok::kw_alignstack:
1325 case lltok::kw_alwaysinline:
1326 case lltok::kw_builtin:
1327 case lltok::kw_cold:
1328 case lltok::kw_inlinehint:
1329 case lltok::kw_jumptable:
1330 case lltok::kw_minsize:
1331 case lltok::kw_naked:
1332 case lltok::kw_nobuiltin:
1333 case lltok::kw_noduplicate:
1334 case lltok::kw_noimplicitfloat:
1335 case lltok::kw_noinline:
1336 case lltok::kw_nonlazybind:
1337 case lltok::kw_noredzone:
1338 case lltok::kw_noreturn:
1339 case lltok::kw_nounwind:
1340 case lltok::kw_optnone:
1341 case lltok::kw_optsize:
1342 case lltok::kw_returns_twice:
1343 case lltok::kw_sanitize_address:
1344 case lltok::kw_sanitize_memory:
1345 case lltok::kw_sanitize_thread:
1347 case lltok::kw_sspreq:
1348 case lltok::kw_sspstrong:
1349 case lltok::kw_uwtable:
1350 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1353 case lltok::kw_readnone:
1354 case lltok::kw_readonly:
1355 HaveError |= Error(Lex.getLoc(), "invalid use of attribute on return type");
1362 /// ParseOptionalLinkage
1369 /// ::= 'linkonce_odr'
1370 /// ::= 'available_externally'
1373 /// ::= 'extern_weak'
1375 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1377 switch (Lex.getKind()) {
1378 default: Res=GlobalValue::ExternalLinkage; return false;
1379 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1380 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1381 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1382 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1383 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1384 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1385 case lltok::kw_available_externally:
1386 Res = GlobalValue::AvailableExternallyLinkage;
1388 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1389 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1390 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1391 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1398 /// ParseOptionalVisibility
1404 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1405 switch (Lex.getKind()) {
1406 default: Res = GlobalValue::DefaultVisibility; return false;
1407 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1408 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1409 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1415 /// ParseOptionalDLLStorageClass
1420 bool LLParser::ParseOptionalDLLStorageClass(unsigned &Res) {
1421 switch (Lex.getKind()) {
1422 default: Res = GlobalValue::DefaultStorageClass; return false;
1423 case lltok::kw_dllimport: Res = GlobalValue::DLLImportStorageClass; break;
1424 case lltok::kw_dllexport: Res = GlobalValue::DLLExportStorageClass; break;
1430 /// ParseOptionalCallingConv
1434 /// ::= 'intel_ocl_bicc'
1436 /// ::= 'x86_stdcallcc'
1437 /// ::= 'x86_fastcallcc'
1438 /// ::= 'x86_thiscallcc'
1439 /// ::= 'x86_vectorcallcc'
1440 /// ::= 'arm_apcscc'
1441 /// ::= 'arm_aapcscc'
1442 /// ::= 'arm_aapcs_vfpcc'
1443 /// ::= 'msp430_intrcc'
1444 /// ::= 'ptx_kernel'
1445 /// ::= 'ptx_device'
1447 /// ::= 'spir_kernel'
1448 /// ::= 'x86_64_sysvcc'
1449 /// ::= 'x86_64_win64cc'
1450 /// ::= 'webkit_jscc'
1452 /// ::= 'preserve_mostcc'
1453 /// ::= 'preserve_allcc'
1457 bool LLParser::ParseOptionalCallingConv(unsigned &CC) {
1458 switch (Lex.getKind()) {
1459 default: CC = CallingConv::C; return false;
1460 case lltok::kw_ccc: CC = CallingConv::C; break;
1461 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1462 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1463 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1464 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1465 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1466 case lltok::kw_x86_vectorcallcc:CC = CallingConv::X86_VectorCall; break;
1467 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1468 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1469 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1470 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1471 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1472 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1473 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1474 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1475 case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1476 case lltok::kw_x86_64_sysvcc: CC = CallingConv::X86_64_SysV; break;
1477 case lltok::kw_x86_64_win64cc: CC = CallingConv::X86_64_Win64; break;
1478 case lltok::kw_webkit_jscc: CC = CallingConv::WebKit_JS; break;
1479 case lltok::kw_anyregcc: CC = CallingConv::AnyReg; break;
1480 case lltok::kw_preserve_mostcc:CC = CallingConv::PreserveMost; break;
1481 case lltok::kw_preserve_allcc: CC = CallingConv::PreserveAll; break;
1482 case lltok::kw_ghccc: CC = CallingConv::GHC; break;
1483 case lltok::kw_cc: {
1485 return ParseUInt32(CC);
1493 /// ParseMetadataAttachment
1495 bool LLParser::ParseMetadataAttachment(unsigned &Kind, MDNode *&MD) {
1496 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata attachment");
1498 std::string Name = Lex.getStrVal();
1499 Kind = M->getMDKindID(Name);
1502 return ParseMDNode(MD);
1505 /// ParseInstructionMetadata
1506 /// ::= !dbg !42 (',' !dbg !57)*
1507 bool LLParser::ParseInstructionMetadata(Instruction &Inst) {
1509 if (Lex.getKind() != lltok::MetadataVar)
1510 return TokError("expected metadata after comma");
1514 if (ParseMetadataAttachment(MDK, N))
1517 Inst.setMetadata(MDK, N);
1518 if (MDK == LLVMContext::MD_tbaa)
1519 InstsWithTBAATag.push_back(&Inst);
1521 // If this is the end of the list, we're done.
1522 } while (EatIfPresent(lltok::comma));
1526 /// ParseOptionalAlignment
1529 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1531 if (!EatIfPresent(lltok::kw_align))
1533 LocTy AlignLoc = Lex.getLoc();
1534 if (ParseUInt32(Alignment)) return true;
1535 if (!isPowerOf2_32(Alignment))
1536 return Error(AlignLoc, "alignment is not a power of two");
1537 if (Alignment > Value::MaximumAlignment)
1538 return Error(AlignLoc, "huge alignments are not supported yet");
1542 /// ParseOptionalDerefAttrBytes
1544 /// ::= AttrKind '(' 4 ')'
1546 /// where AttrKind is either 'dereferenceable' or 'dereferenceable_or_null'.
1547 bool LLParser::ParseOptionalDerefAttrBytes(lltok::Kind AttrKind,
1549 assert((AttrKind == lltok::kw_dereferenceable ||
1550 AttrKind == lltok::kw_dereferenceable_or_null) &&
1554 if (!EatIfPresent(AttrKind))
1556 LocTy ParenLoc = Lex.getLoc();
1557 if (!EatIfPresent(lltok::lparen))
1558 return Error(ParenLoc, "expected '('");
1559 LocTy DerefLoc = Lex.getLoc();
1560 if (ParseUInt64(Bytes)) return true;
1561 ParenLoc = Lex.getLoc();
1562 if (!EatIfPresent(lltok::rparen))
1563 return Error(ParenLoc, "expected ')'");
1565 return Error(DerefLoc, "dereferenceable bytes must be non-zero");
1569 /// ParseOptionalCommaAlign
1573 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1575 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1576 bool &AteExtraComma) {
1577 AteExtraComma = false;
1578 while (EatIfPresent(lltok::comma)) {
1579 // Metadata at the end is an early exit.
1580 if (Lex.getKind() == lltok::MetadataVar) {
1581 AteExtraComma = true;
1585 if (Lex.getKind() != lltok::kw_align)
1586 return Error(Lex.getLoc(), "expected metadata or 'align'");
1588 if (ParseOptionalAlignment(Alignment)) return true;
1594 /// ParseScopeAndOrdering
1595 /// if isAtomic: ::= 'singlethread'? AtomicOrdering
1598 /// This sets Scope and Ordering to the parsed values.
1599 bool LLParser::ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope,
1600 AtomicOrdering &Ordering) {
1604 Scope = CrossThread;
1605 if (EatIfPresent(lltok::kw_singlethread))
1606 Scope = SingleThread;
1608 return ParseOrdering(Ordering);
1612 /// ::= AtomicOrdering
1614 /// This sets Ordering to the parsed value.
1615 bool LLParser::ParseOrdering(AtomicOrdering &Ordering) {
1616 switch (Lex.getKind()) {
1617 default: return TokError("Expected ordering on atomic instruction");
1618 case lltok::kw_unordered: Ordering = Unordered; break;
1619 case lltok::kw_monotonic: Ordering = Monotonic; break;
1620 case lltok::kw_acquire: Ordering = Acquire; break;
1621 case lltok::kw_release: Ordering = Release; break;
1622 case lltok::kw_acq_rel: Ordering = AcquireRelease; break;
1623 case lltok::kw_seq_cst: Ordering = SequentiallyConsistent; break;
1629 /// ParseOptionalStackAlignment
1631 /// ::= 'alignstack' '(' 4 ')'
1632 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1634 if (!EatIfPresent(lltok::kw_alignstack))
1636 LocTy ParenLoc = Lex.getLoc();
1637 if (!EatIfPresent(lltok::lparen))
1638 return Error(ParenLoc, "expected '('");
1639 LocTy AlignLoc = Lex.getLoc();
1640 if (ParseUInt32(Alignment)) return true;
1641 ParenLoc = Lex.getLoc();
1642 if (!EatIfPresent(lltok::rparen))
1643 return Error(ParenLoc, "expected ')'");
1644 if (!isPowerOf2_32(Alignment))
1645 return Error(AlignLoc, "stack alignment is not a power of two");
1649 /// ParseIndexList - This parses the index list for an insert/extractvalue
1650 /// instruction. This sets AteExtraComma in the case where we eat an extra
1651 /// comma at the end of the line and find that it is followed by metadata.
1652 /// Clients that don't allow metadata can call the version of this function that
1653 /// only takes one argument.
1656 /// ::= (',' uint32)+
1658 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1659 bool &AteExtraComma) {
1660 AteExtraComma = false;
1662 if (Lex.getKind() != lltok::comma)
1663 return TokError("expected ',' as start of index list");
1665 while (EatIfPresent(lltok::comma)) {
1666 if (Lex.getKind() == lltok::MetadataVar) {
1667 if (Indices.empty()) return TokError("expected index");
1668 AteExtraComma = true;
1672 if (ParseUInt32(Idx)) return true;
1673 Indices.push_back(Idx);
1679 //===----------------------------------------------------------------------===//
1681 //===----------------------------------------------------------------------===//
1683 /// ParseType - Parse a type.
1684 bool LLParser::ParseType(Type *&Result, const Twine &Msg, bool AllowVoid) {
1685 SMLoc TypeLoc = Lex.getLoc();
1686 switch (Lex.getKind()) {
1688 return TokError(Msg);
1690 // Type ::= 'float' | 'void' (etc)
1691 Result = Lex.getTyVal();
1695 // Type ::= StructType
1696 if (ParseAnonStructType(Result, false))
1699 case lltok::lsquare:
1700 // Type ::= '[' ... ']'
1701 Lex.Lex(); // eat the lsquare.
1702 if (ParseArrayVectorType(Result, false))
1705 case lltok::less: // Either vector or packed struct.
1706 // Type ::= '<' ... '>'
1708 if (Lex.getKind() == lltok::lbrace) {
1709 if (ParseAnonStructType(Result, true) ||
1710 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1712 } else if (ParseArrayVectorType(Result, true))
1715 case lltok::LocalVar: {
1717 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
1719 // If the type hasn't been defined yet, create a forward definition and
1720 // remember where that forward def'n was seen (in case it never is defined).
1722 Entry.first = StructType::create(Context, Lex.getStrVal());
1723 Entry.second = Lex.getLoc();
1725 Result = Entry.first;
1730 case lltok::LocalVarID: {
1732 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
1734 // If the type hasn't been defined yet, create a forward definition and
1735 // remember where that forward def'n was seen (in case it never is defined).
1737 Entry.first = StructType::create(Context);
1738 Entry.second = Lex.getLoc();
1740 Result = Entry.first;
1746 // Parse the type suffixes.
1748 switch (Lex.getKind()) {
1751 if (!AllowVoid && Result->isVoidTy())
1752 return Error(TypeLoc, "void type only allowed for function results");
1755 // Type ::= Type '*'
1757 if (Result->isLabelTy())
1758 return TokError("basic block pointers are invalid");
1759 if (Result->isVoidTy())
1760 return TokError("pointers to void are invalid - use i8* instead");
1761 if (!PointerType::isValidElementType(Result))
1762 return TokError("pointer to this type is invalid");
1763 Result = PointerType::getUnqual(Result);
1767 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
1768 case lltok::kw_addrspace: {
1769 if (Result->isLabelTy())
1770 return TokError("basic block pointers are invalid");
1771 if (Result->isVoidTy())
1772 return TokError("pointers to void are invalid; use i8* instead");
1773 if (!PointerType::isValidElementType(Result))
1774 return TokError("pointer to this type is invalid");
1776 if (ParseOptionalAddrSpace(AddrSpace) ||
1777 ParseToken(lltok::star, "expected '*' in address space"))
1780 Result = PointerType::get(Result, AddrSpace);
1784 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1786 if (ParseFunctionType(Result))
1793 /// ParseParameterList
1795 /// ::= '(' Arg (',' Arg)* ')'
1797 /// ::= Type OptionalAttributes Value OptionalAttributes
1798 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1799 PerFunctionState &PFS, bool IsMustTailCall,
1800 bool InVarArgsFunc) {
1801 if (ParseToken(lltok::lparen, "expected '(' in call"))
1804 unsigned AttrIndex = 1;
1805 while (Lex.getKind() != lltok::rparen) {
1806 // If this isn't the first argument, we need a comma.
1807 if (!ArgList.empty() &&
1808 ParseToken(lltok::comma, "expected ',' in argument list"))
1811 // Parse an ellipsis if this is a musttail call in a variadic function.
1812 if (Lex.getKind() == lltok::dotdotdot) {
1813 const char *Msg = "unexpected ellipsis in argument list for ";
1814 if (!IsMustTailCall)
1815 return TokError(Twine(Msg) + "non-musttail call");
1817 return TokError(Twine(Msg) + "musttail call in non-varargs function");
1818 Lex.Lex(); // Lex the '...', it is purely for readability.
1819 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1822 // Parse the argument.
1824 Type *ArgTy = nullptr;
1825 AttrBuilder ArgAttrs;
1827 if (ParseType(ArgTy, ArgLoc))
1830 if (ArgTy->isMetadataTy()) {
1831 if (ParseMetadataAsValue(V, PFS))
1834 // Otherwise, handle normal operands.
1835 if (ParseOptionalParamAttrs(ArgAttrs) || ParseValue(ArgTy, V, PFS))
1838 ArgList.push_back(ParamInfo(ArgLoc, V, AttributeSet::get(V->getContext(),
1843 if (IsMustTailCall && InVarArgsFunc)
1844 return TokError("expected '...' at end of argument list for musttail call "
1845 "in varargs function");
1847 Lex.Lex(); // Lex the ')'.
1853 /// ParseArgumentList - Parse the argument list for a function type or function
1855 /// ::= '(' ArgTypeListI ')'
1859 /// ::= ArgTypeList ',' '...'
1860 /// ::= ArgType (',' ArgType)*
1862 bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
1865 assert(Lex.getKind() == lltok::lparen);
1866 Lex.Lex(); // eat the (.
1868 if (Lex.getKind() == lltok::rparen) {
1870 } else if (Lex.getKind() == lltok::dotdotdot) {
1874 LocTy TypeLoc = Lex.getLoc();
1875 Type *ArgTy = nullptr;
1879 if (ParseType(ArgTy) ||
1880 ParseOptionalParamAttrs(Attrs)) return true;
1882 if (ArgTy->isVoidTy())
1883 return Error(TypeLoc, "argument can not have void type");
1885 if (Lex.getKind() == lltok::LocalVar) {
1886 Name = Lex.getStrVal();
1890 if (!FunctionType::isValidArgumentType(ArgTy))
1891 return Error(TypeLoc, "invalid type for function argument");
1893 unsigned AttrIndex = 1;
1894 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1895 AttributeSet::get(ArgTy->getContext(),
1896 AttrIndex++, Attrs), Name));
1898 while (EatIfPresent(lltok::comma)) {
1899 // Handle ... at end of arg list.
1900 if (EatIfPresent(lltok::dotdotdot)) {
1905 // Otherwise must be an argument type.
1906 TypeLoc = Lex.getLoc();
1907 if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
1909 if (ArgTy->isVoidTy())
1910 return Error(TypeLoc, "argument can not have void type");
1912 if (Lex.getKind() == lltok::LocalVar) {
1913 Name = Lex.getStrVal();
1919 if (!ArgTy->isFirstClassType())
1920 return Error(TypeLoc, "invalid type for function argument");
1922 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1923 AttributeSet::get(ArgTy->getContext(),
1924 AttrIndex++, Attrs),
1929 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1932 /// ParseFunctionType
1933 /// ::= Type ArgumentList OptionalAttrs
1934 bool LLParser::ParseFunctionType(Type *&Result) {
1935 assert(Lex.getKind() == lltok::lparen);
1937 if (!FunctionType::isValidReturnType(Result))
1938 return TokError("invalid function return type");
1940 SmallVector<ArgInfo, 8> ArgList;
1942 if (ParseArgumentList(ArgList, isVarArg))
1945 // Reject names on the arguments lists.
1946 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1947 if (!ArgList[i].Name.empty())
1948 return Error(ArgList[i].Loc, "argument name invalid in function type");
1949 if (ArgList[i].Attrs.hasAttributes(i + 1))
1950 return Error(ArgList[i].Loc,
1951 "argument attributes invalid in function type");
1954 SmallVector<Type*, 16> ArgListTy;
1955 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1956 ArgListTy.push_back(ArgList[i].Ty);
1958 Result = FunctionType::get(Result, ArgListTy, isVarArg);
1962 /// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
1964 bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
1965 SmallVector<Type*, 8> Elts;
1966 if (ParseStructBody(Elts)) return true;
1968 Result = StructType::get(Context, Elts, Packed);
1972 /// ParseStructDefinition - Parse a struct in a 'type' definition.
1973 bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
1974 std::pair<Type*, LocTy> &Entry,
1976 // If the type was already defined, diagnose the redefinition.
1977 if (Entry.first && !Entry.second.isValid())
1978 return Error(TypeLoc, "redefinition of type");
1980 // If we have opaque, just return without filling in the definition for the
1981 // struct. This counts as a definition as far as the .ll file goes.
1982 if (EatIfPresent(lltok::kw_opaque)) {
1983 // This type is being defined, so clear the location to indicate this.
1984 Entry.second = SMLoc();
1986 // If this type number has never been uttered, create it.
1988 Entry.first = StructType::create(Context, Name);
1989 ResultTy = Entry.first;
1993 // If the type starts with '<', then it is either a packed struct or a vector.
1994 bool isPacked = EatIfPresent(lltok::less);
1996 // If we don't have a struct, then we have a random type alias, which we
1997 // accept for compatibility with old files. These types are not allowed to be
1998 // forward referenced and not allowed to be recursive.
1999 if (Lex.getKind() != lltok::lbrace) {
2001 return Error(TypeLoc, "forward references to non-struct type");
2005 return ParseArrayVectorType(ResultTy, true);
2006 return ParseType(ResultTy);
2009 // This type is being defined, so clear the location to indicate this.
2010 Entry.second = SMLoc();
2012 // If this type number has never been uttered, create it.
2014 Entry.first = StructType::create(Context, Name);
2016 StructType *STy = cast<StructType>(Entry.first);
2018 SmallVector<Type*, 8> Body;
2019 if (ParseStructBody(Body) ||
2020 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
2023 STy->setBody(Body, isPacked);
2029 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
2032 /// ::= '{' Type (',' Type)* '}'
2033 /// ::= '<' '{' '}' '>'
2034 /// ::= '<' '{' Type (',' Type)* '}' '>'
2035 bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
2036 assert(Lex.getKind() == lltok::lbrace);
2037 Lex.Lex(); // Consume the '{'
2039 // Handle the empty struct.
2040 if (EatIfPresent(lltok::rbrace))
2043 LocTy EltTyLoc = Lex.getLoc();
2045 if (ParseType(Ty)) return true;
2048 if (!StructType::isValidElementType(Ty))
2049 return Error(EltTyLoc, "invalid element type for struct");
2051 while (EatIfPresent(lltok::comma)) {
2052 EltTyLoc = Lex.getLoc();
2053 if (ParseType(Ty)) return true;
2055 if (!StructType::isValidElementType(Ty))
2056 return Error(EltTyLoc, "invalid element type for struct");
2061 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
2064 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
2065 /// token has already been consumed.
2067 /// ::= '[' APSINTVAL 'x' Types ']'
2068 /// ::= '<' APSINTVAL 'x' Types '>'
2069 bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
2070 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
2071 Lex.getAPSIntVal().getBitWidth() > 64)
2072 return TokError("expected number in address space");
2074 LocTy SizeLoc = Lex.getLoc();
2075 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
2078 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
2081 LocTy TypeLoc = Lex.getLoc();
2082 Type *EltTy = nullptr;
2083 if (ParseType(EltTy)) return true;
2085 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
2086 "expected end of sequential type"))
2091 return Error(SizeLoc, "zero element vector is illegal");
2092 if ((unsigned)Size != Size)
2093 return Error(SizeLoc, "size too large for vector");
2094 if (!VectorType::isValidElementType(EltTy))
2095 return Error(TypeLoc, "invalid vector element type");
2096 Result = VectorType::get(EltTy, unsigned(Size));
2098 if (!ArrayType::isValidElementType(EltTy))
2099 return Error(TypeLoc, "invalid array element type");
2100 Result = ArrayType::get(EltTy, Size);
2105 //===----------------------------------------------------------------------===//
2106 // Function Semantic Analysis.
2107 //===----------------------------------------------------------------------===//
2109 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
2111 : P(p), F(f), FunctionNumber(functionNumber) {
2113 // Insert unnamed arguments into the NumberedVals list.
2114 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
2117 NumberedVals.push_back(AI);
2120 LLParser::PerFunctionState::~PerFunctionState() {
2121 // If there were any forward referenced non-basicblock values, delete them.
2122 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
2123 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
2124 if (!isa<BasicBlock>(I->second.first)) {
2125 I->second.first->replaceAllUsesWith(
2126 UndefValue::get(I->second.first->getType()));
2127 delete I->second.first;
2128 I->second.first = nullptr;
2131 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2132 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
2133 if (!isa<BasicBlock>(I->second.first)) {
2134 I->second.first->replaceAllUsesWith(
2135 UndefValue::get(I->second.first->getType()));
2136 delete I->second.first;
2137 I->second.first = nullptr;
2141 bool LLParser::PerFunctionState::FinishFunction() {
2142 if (!ForwardRefVals.empty())
2143 return P.Error(ForwardRefVals.begin()->second.second,
2144 "use of undefined value '%" + ForwardRefVals.begin()->first +
2146 if (!ForwardRefValIDs.empty())
2147 return P.Error(ForwardRefValIDs.begin()->second.second,
2148 "use of undefined value '%" +
2149 Twine(ForwardRefValIDs.begin()->first) + "'");
2154 /// GetVal - Get a value with the specified name or ID, creating a
2155 /// forward reference record if needed. This can return null if the value
2156 /// exists but does not have the right type.
2157 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
2158 Type *Ty, LocTy Loc) {
2159 // Look this name up in the normal function symbol table.
2160 Value *Val = F.getValueSymbolTable().lookup(Name);
2162 // If this is a forward reference for the value, see if we already created a
2163 // forward ref record.
2165 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2166 I = ForwardRefVals.find(Name);
2167 if (I != ForwardRefVals.end())
2168 Val = I->second.first;
2171 // If we have the value in the symbol table or fwd-ref table, return it.
2173 if (Val->getType() == Ty) return Val;
2174 if (Ty->isLabelTy())
2175 P.Error(Loc, "'%" + Name + "' is not a basic block");
2177 P.Error(Loc, "'%" + Name + "' defined with type '" +
2178 getTypeString(Val->getType()) + "'");
2182 // Don't make placeholders with invalid type.
2183 if (!Ty->isFirstClassType()) {
2184 P.Error(Loc, "invalid use of a non-first-class type");
2188 // Otherwise, create a new forward reference for this value and remember it.
2190 if (Ty->isLabelTy())
2191 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2193 FwdVal = new Argument(Ty, Name);
2195 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2199 Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty,
2201 // Look this name up in the normal function symbol table.
2202 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
2204 // If this is a forward reference for the value, see if we already created a
2205 // forward ref record.
2207 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2208 I = ForwardRefValIDs.find(ID);
2209 if (I != ForwardRefValIDs.end())
2210 Val = I->second.first;
2213 // If we have the value in the symbol table or fwd-ref table, return it.
2215 if (Val->getType() == Ty) return Val;
2216 if (Ty->isLabelTy())
2217 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
2219 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
2220 getTypeString(Val->getType()) + "'");
2224 if (!Ty->isFirstClassType()) {
2225 P.Error(Loc, "invalid use of a non-first-class type");
2229 // Otherwise, create a new forward reference for this value and remember it.
2231 if (Ty->isLabelTy())
2232 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2234 FwdVal = new Argument(Ty);
2236 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2240 /// SetInstName - After an instruction is parsed and inserted into its
2241 /// basic block, this installs its name.
2242 bool LLParser::PerFunctionState::SetInstName(int NameID,
2243 const std::string &NameStr,
2244 LocTy NameLoc, Instruction *Inst) {
2245 // If this instruction has void type, it cannot have a name or ID specified.
2246 if (Inst->getType()->isVoidTy()) {
2247 if (NameID != -1 || !NameStr.empty())
2248 return P.Error(NameLoc, "instructions returning void cannot have a name");
2252 // If this was a numbered instruction, verify that the instruction is the
2253 // expected value and resolve any forward references.
2254 if (NameStr.empty()) {
2255 // If neither a name nor an ID was specified, just use the next ID.
2257 NameID = NumberedVals.size();
2259 if (unsigned(NameID) != NumberedVals.size())
2260 return P.Error(NameLoc, "instruction expected to be numbered '%" +
2261 Twine(NumberedVals.size()) + "'");
2263 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
2264 ForwardRefValIDs.find(NameID);
2265 if (FI != ForwardRefValIDs.end()) {
2266 if (FI->second.first->getType() != Inst->getType())
2267 return P.Error(NameLoc, "instruction forward referenced with type '" +
2268 getTypeString(FI->second.first->getType()) + "'");
2269 FI->second.first->replaceAllUsesWith(Inst);
2270 delete FI->second.first;
2271 ForwardRefValIDs.erase(FI);
2274 NumberedVals.push_back(Inst);
2278 // Otherwise, the instruction had a name. Resolve forward refs and set it.
2279 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2280 FI = ForwardRefVals.find(NameStr);
2281 if (FI != ForwardRefVals.end()) {
2282 if (FI->second.first->getType() != Inst->getType())
2283 return P.Error(NameLoc, "instruction forward referenced with type '" +
2284 getTypeString(FI->second.first->getType()) + "'");
2285 FI->second.first->replaceAllUsesWith(Inst);
2286 delete FI->second.first;
2287 ForwardRefVals.erase(FI);
2290 // Set the name on the instruction.
2291 Inst->setName(NameStr);
2293 if (Inst->getName() != NameStr)
2294 return P.Error(NameLoc, "multiple definition of local value named '" +
2299 /// GetBB - Get a basic block with the specified name or ID, creating a
2300 /// forward reference record if needed.
2301 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2303 return dyn_cast_or_null<BasicBlock>(GetVal(Name,
2304 Type::getLabelTy(F.getContext()), Loc));
2307 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2308 return dyn_cast_or_null<BasicBlock>(GetVal(ID,
2309 Type::getLabelTy(F.getContext()), Loc));
2312 /// DefineBB - Define the specified basic block, which is either named or
2313 /// unnamed. If there is an error, this returns null otherwise it returns
2314 /// the block being defined.
2315 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2319 BB = GetBB(NumberedVals.size(), Loc);
2321 BB = GetBB(Name, Loc);
2322 if (!BB) return nullptr; // Already diagnosed error.
2324 // Move the block to the end of the function. Forward ref'd blocks are
2325 // inserted wherever they happen to be referenced.
2326 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2328 // Remove the block from forward ref sets.
2330 ForwardRefValIDs.erase(NumberedVals.size());
2331 NumberedVals.push_back(BB);
2333 // BB forward references are already in the function symbol table.
2334 ForwardRefVals.erase(Name);
2340 //===----------------------------------------------------------------------===//
2342 //===----------------------------------------------------------------------===//
2344 /// ParseValID - Parse an abstract value that doesn't necessarily have a
2345 /// type implied. For example, if we parse "4" we don't know what integer type
2346 /// it has. The value will later be combined with its type and checked for
2347 /// sanity. PFS is used to convert function-local operands of metadata (since
2348 /// metadata operands are not just parsed here but also converted to values).
2349 /// PFS can be null when we are not parsing metadata values inside a function.
2350 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2351 ID.Loc = Lex.getLoc();
2352 switch (Lex.getKind()) {
2353 default: return TokError("expected value token");
2354 case lltok::GlobalID: // @42
2355 ID.UIntVal = Lex.getUIntVal();
2356 ID.Kind = ValID::t_GlobalID;
2358 case lltok::GlobalVar: // @foo
2359 ID.StrVal = Lex.getStrVal();
2360 ID.Kind = ValID::t_GlobalName;
2362 case lltok::LocalVarID: // %42
2363 ID.UIntVal = Lex.getUIntVal();
2364 ID.Kind = ValID::t_LocalID;
2366 case lltok::LocalVar: // %foo
2367 ID.StrVal = Lex.getStrVal();
2368 ID.Kind = ValID::t_LocalName;
2371 ID.APSIntVal = Lex.getAPSIntVal();
2372 ID.Kind = ValID::t_APSInt;
2374 case lltok::APFloat:
2375 ID.APFloatVal = Lex.getAPFloatVal();
2376 ID.Kind = ValID::t_APFloat;
2378 case lltok::kw_true:
2379 ID.ConstantVal = ConstantInt::getTrue(Context);
2380 ID.Kind = ValID::t_Constant;
2382 case lltok::kw_false:
2383 ID.ConstantVal = ConstantInt::getFalse(Context);
2384 ID.Kind = ValID::t_Constant;
2386 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2387 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2388 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2390 case lltok::lbrace: {
2391 // ValID ::= '{' ConstVector '}'
2393 SmallVector<Constant*, 16> Elts;
2394 if (ParseGlobalValueVector(Elts) ||
2395 ParseToken(lltok::rbrace, "expected end of struct constant"))
2398 ID.ConstantStructElts = new Constant*[Elts.size()];
2399 ID.UIntVal = Elts.size();
2400 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2401 ID.Kind = ValID::t_ConstantStruct;
2405 // ValID ::= '<' ConstVector '>' --> Vector.
2406 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2408 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2410 SmallVector<Constant*, 16> Elts;
2411 LocTy FirstEltLoc = Lex.getLoc();
2412 if (ParseGlobalValueVector(Elts) ||
2414 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2415 ParseToken(lltok::greater, "expected end of constant"))
2418 if (isPackedStruct) {
2419 ID.ConstantStructElts = new Constant*[Elts.size()];
2420 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2421 ID.UIntVal = Elts.size();
2422 ID.Kind = ValID::t_PackedConstantStruct;
2427 return Error(ID.Loc, "constant vector must not be empty");
2429 if (!Elts[0]->getType()->isIntegerTy() &&
2430 !Elts[0]->getType()->isFloatingPointTy() &&
2431 !Elts[0]->getType()->isPointerTy())
2432 return Error(FirstEltLoc,
2433 "vector elements must have integer, pointer or floating point type");
2435 // Verify that all the vector elements have the same type.
2436 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2437 if (Elts[i]->getType() != Elts[0]->getType())
2438 return Error(FirstEltLoc,
2439 "vector element #" + Twine(i) +
2440 " is not of type '" + getTypeString(Elts[0]->getType()));
2442 ID.ConstantVal = ConstantVector::get(Elts);
2443 ID.Kind = ValID::t_Constant;
2446 case lltok::lsquare: { // Array Constant
2448 SmallVector<Constant*, 16> Elts;
2449 LocTy FirstEltLoc = Lex.getLoc();
2450 if (ParseGlobalValueVector(Elts) ||
2451 ParseToken(lltok::rsquare, "expected end of array constant"))
2454 // Handle empty element.
2456 // Use undef instead of an array because it's inconvenient to determine
2457 // the element type at this point, there being no elements to examine.
2458 ID.Kind = ValID::t_EmptyArray;
2462 if (!Elts[0]->getType()->isFirstClassType())
2463 return Error(FirstEltLoc, "invalid array element type: " +
2464 getTypeString(Elts[0]->getType()));
2466 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2468 // Verify all elements are correct type!
2469 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2470 if (Elts[i]->getType() != Elts[0]->getType())
2471 return Error(FirstEltLoc,
2472 "array element #" + Twine(i) +
2473 " is not of type '" + getTypeString(Elts[0]->getType()));
2476 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2477 ID.Kind = ValID::t_Constant;
2480 case lltok::kw_c: // c "foo"
2482 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2484 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2485 ID.Kind = ValID::t_Constant;
2488 case lltok::kw_asm: {
2489 // ValID ::= 'asm' SideEffect? AlignStack? IntelDialect? STRINGCONSTANT ','
2491 bool HasSideEffect, AlignStack, AsmDialect;
2493 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2494 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2495 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2496 ParseStringConstant(ID.StrVal) ||
2497 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2498 ParseToken(lltok::StringConstant, "expected constraint string"))
2500 ID.StrVal2 = Lex.getStrVal();
2501 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2502 (unsigned(AsmDialect)<<2);
2503 ID.Kind = ValID::t_InlineAsm;
2507 case lltok::kw_blockaddress: {
2508 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2513 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2515 ParseToken(lltok::comma, "expected comma in block address expression")||
2516 ParseValID(Label) ||
2517 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2520 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2521 return Error(Fn.Loc, "expected function name in blockaddress");
2522 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2523 return Error(Label.Loc, "expected basic block name in blockaddress");
2525 // Try to find the function (but skip it if it's forward-referenced).
2526 GlobalValue *GV = nullptr;
2527 if (Fn.Kind == ValID::t_GlobalID) {
2528 if (Fn.UIntVal < NumberedVals.size())
2529 GV = NumberedVals[Fn.UIntVal];
2530 } else if (!ForwardRefVals.count(Fn.StrVal)) {
2531 GV = M->getNamedValue(Fn.StrVal);
2533 Function *F = nullptr;
2535 // Confirm that it's actually a function with a definition.
2536 if (!isa<Function>(GV))
2537 return Error(Fn.Loc, "expected function name in blockaddress");
2538 F = cast<Function>(GV);
2539 if (F->isDeclaration())
2540 return Error(Fn.Loc, "cannot take blockaddress inside a declaration");
2544 // Make a global variable as a placeholder for this reference.
2545 GlobalValue *&FwdRef =
2546 ForwardRefBlockAddresses.insert(std::make_pair(
2548 std::map<ValID, GlobalValue *>()))
2549 .first->second.insert(std::make_pair(std::move(Label), nullptr))
2552 FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context), false,
2553 GlobalValue::InternalLinkage, nullptr, "");
2554 ID.ConstantVal = FwdRef;
2555 ID.Kind = ValID::t_Constant;
2559 // We found the function; now find the basic block. Don't use PFS, since we
2560 // might be inside a constant expression.
2562 if (BlockAddressPFS && F == &BlockAddressPFS->getFunction()) {
2563 if (Label.Kind == ValID::t_LocalID)
2564 BB = BlockAddressPFS->GetBB(Label.UIntVal, Label.Loc);
2566 BB = BlockAddressPFS->GetBB(Label.StrVal, Label.Loc);
2568 return Error(Label.Loc, "referenced value is not a basic block");
2570 if (Label.Kind == ValID::t_LocalID)
2571 return Error(Label.Loc, "cannot take address of numeric label after "
2572 "the function is defined");
2573 BB = dyn_cast_or_null<BasicBlock>(
2574 F->getValueSymbolTable().lookup(Label.StrVal));
2576 return Error(Label.Loc, "referenced value is not a basic block");
2579 ID.ConstantVal = BlockAddress::get(F, BB);
2580 ID.Kind = ValID::t_Constant;
2584 case lltok::kw_trunc:
2585 case lltok::kw_zext:
2586 case lltok::kw_sext:
2587 case lltok::kw_fptrunc:
2588 case lltok::kw_fpext:
2589 case lltok::kw_bitcast:
2590 case lltok::kw_addrspacecast:
2591 case lltok::kw_uitofp:
2592 case lltok::kw_sitofp:
2593 case lltok::kw_fptoui:
2594 case lltok::kw_fptosi:
2595 case lltok::kw_inttoptr:
2596 case lltok::kw_ptrtoint: {
2597 unsigned Opc = Lex.getUIntVal();
2598 Type *DestTy = nullptr;
2601 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2602 ParseGlobalTypeAndValue(SrcVal) ||
2603 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2604 ParseType(DestTy) ||
2605 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2607 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2608 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2609 getTypeString(SrcVal->getType()) + "' to '" +
2610 getTypeString(DestTy) + "'");
2611 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2613 ID.Kind = ValID::t_Constant;
2616 case lltok::kw_extractvalue: {
2619 SmallVector<unsigned, 4> Indices;
2620 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2621 ParseGlobalTypeAndValue(Val) ||
2622 ParseIndexList(Indices) ||
2623 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2626 if (!Val->getType()->isAggregateType())
2627 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2628 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
2629 return Error(ID.Loc, "invalid indices for extractvalue");
2630 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
2631 ID.Kind = ValID::t_Constant;
2634 case lltok::kw_insertvalue: {
2636 Constant *Val0, *Val1;
2637 SmallVector<unsigned, 4> Indices;
2638 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2639 ParseGlobalTypeAndValue(Val0) ||
2640 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2641 ParseGlobalTypeAndValue(Val1) ||
2642 ParseIndexList(Indices) ||
2643 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2645 if (!Val0->getType()->isAggregateType())
2646 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2648 ExtractValueInst::getIndexedType(Val0->getType(), Indices);
2650 return Error(ID.Loc, "invalid indices for insertvalue");
2651 if (IndexedType != Val1->getType())
2652 return Error(ID.Loc, "insertvalue operand and field disagree in type: '" +
2653 getTypeString(Val1->getType()) +
2654 "' instead of '" + getTypeString(IndexedType) +
2656 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
2657 ID.Kind = ValID::t_Constant;
2660 case lltok::kw_icmp:
2661 case lltok::kw_fcmp: {
2662 unsigned PredVal, Opc = Lex.getUIntVal();
2663 Constant *Val0, *Val1;
2665 if (ParseCmpPredicate(PredVal, Opc) ||
2666 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2667 ParseGlobalTypeAndValue(Val0) ||
2668 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2669 ParseGlobalTypeAndValue(Val1) ||
2670 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2673 if (Val0->getType() != Val1->getType())
2674 return Error(ID.Loc, "compare operands must have the same type");
2676 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2678 if (Opc == Instruction::FCmp) {
2679 if (!Val0->getType()->isFPOrFPVectorTy())
2680 return Error(ID.Loc, "fcmp requires floating point operands");
2681 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2683 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2684 if (!Val0->getType()->isIntOrIntVectorTy() &&
2685 !Val0->getType()->getScalarType()->isPointerTy())
2686 return Error(ID.Loc, "icmp requires pointer or integer operands");
2687 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2689 ID.Kind = ValID::t_Constant;
2693 // Binary Operators.
2695 case lltok::kw_fadd:
2697 case lltok::kw_fsub:
2699 case lltok::kw_fmul:
2700 case lltok::kw_udiv:
2701 case lltok::kw_sdiv:
2702 case lltok::kw_fdiv:
2703 case lltok::kw_urem:
2704 case lltok::kw_srem:
2705 case lltok::kw_frem:
2707 case lltok::kw_lshr:
2708 case lltok::kw_ashr: {
2712 unsigned Opc = Lex.getUIntVal();
2713 Constant *Val0, *Val1;
2715 LocTy ModifierLoc = Lex.getLoc();
2716 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
2717 Opc == Instruction::Mul || Opc == Instruction::Shl) {
2718 if (EatIfPresent(lltok::kw_nuw))
2720 if (EatIfPresent(lltok::kw_nsw)) {
2722 if (EatIfPresent(lltok::kw_nuw))
2725 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
2726 Opc == Instruction::LShr || Opc == Instruction::AShr) {
2727 if (EatIfPresent(lltok::kw_exact))
2730 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2731 ParseGlobalTypeAndValue(Val0) ||
2732 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2733 ParseGlobalTypeAndValue(Val1) ||
2734 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2736 if (Val0->getType() != Val1->getType())
2737 return Error(ID.Loc, "operands of constexpr must have same type");
2738 if (!Val0->getType()->isIntOrIntVectorTy()) {
2740 return Error(ModifierLoc, "nuw only applies to integer operations");
2742 return Error(ModifierLoc, "nsw only applies to integer operations");
2744 // Check that the type is valid for the operator.
2746 case Instruction::Add:
2747 case Instruction::Sub:
2748 case Instruction::Mul:
2749 case Instruction::UDiv:
2750 case Instruction::SDiv:
2751 case Instruction::URem:
2752 case Instruction::SRem:
2753 case Instruction::Shl:
2754 case Instruction::AShr:
2755 case Instruction::LShr:
2756 if (!Val0->getType()->isIntOrIntVectorTy())
2757 return Error(ID.Loc, "constexpr requires integer operands");
2759 case Instruction::FAdd:
2760 case Instruction::FSub:
2761 case Instruction::FMul:
2762 case Instruction::FDiv:
2763 case Instruction::FRem:
2764 if (!Val0->getType()->isFPOrFPVectorTy())
2765 return Error(ID.Loc, "constexpr requires fp operands");
2767 default: llvm_unreachable("Unknown binary operator!");
2770 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2771 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2772 if (Exact) Flags |= PossiblyExactOperator::IsExact;
2773 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2775 ID.Kind = ValID::t_Constant;
2779 // Logical Operations
2782 case lltok::kw_xor: {
2783 unsigned Opc = Lex.getUIntVal();
2784 Constant *Val0, *Val1;
2786 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2787 ParseGlobalTypeAndValue(Val0) ||
2788 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2789 ParseGlobalTypeAndValue(Val1) ||
2790 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2792 if (Val0->getType() != Val1->getType())
2793 return Error(ID.Loc, "operands of constexpr must have same type");
2794 if (!Val0->getType()->isIntOrIntVectorTy())
2795 return Error(ID.Loc,
2796 "constexpr requires integer or integer vector operands");
2797 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2798 ID.Kind = ValID::t_Constant;
2802 case lltok::kw_getelementptr:
2803 case lltok::kw_shufflevector:
2804 case lltok::kw_insertelement:
2805 case lltok::kw_extractelement:
2806 case lltok::kw_select: {
2807 unsigned Opc = Lex.getUIntVal();
2808 SmallVector<Constant*, 16> Elts;
2809 bool InBounds = false;
2813 if (Opc == Instruction::GetElementPtr)
2814 InBounds = EatIfPresent(lltok::kw_inbounds);
2816 if (ParseToken(lltok::lparen, "expected '(' in constantexpr"))
2819 LocTy ExplicitTypeLoc = Lex.getLoc();
2820 if (Opc == Instruction::GetElementPtr) {
2821 if (ParseType(Ty) ||
2822 ParseToken(lltok::comma, "expected comma after getelementptr's type"))
2826 if (ParseGlobalValueVector(Elts) ||
2827 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2830 if (Opc == Instruction::GetElementPtr) {
2831 if (Elts.size() == 0 ||
2832 !Elts[0]->getType()->getScalarType()->isPointerTy())
2833 return Error(ID.Loc, "base of getelementptr must be a pointer");
2835 Type *BaseType = Elts[0]->getType();
2836 auto *BasePointerType = cast<PointerType>(BaseType->getScalarType());
2837 if (Ty != BasePointerType->getElementType())
2840 "explicit pointee type doesn't match operand's pointee type");
2842 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
2843 for (Constant *Val : Indices) {
2844 Type *ValTy = Val->getType();
2845 if (!ValTy->getScalarType()->isIntegerTy())
2846 return Error(ID.Loc, "getelementptr index must be an integer");
2847 if (ValTy->isVectorTy() != BaseType->isVectorTy())
2848 return Error(ID.Loc, "getelementptr index type missmatch");
2849 if (ValTy->isVectorTy()) {
2850 unsigned ValNumEl = cast<VectorType>(ValTy)->getNumElements();
2851 unsigned PtrNumEl = cast<VectorType>(BaseType)->getNumElements();
2852 if (ValNumEl != PtrNumEl)
2855 "getelementptr vector index has a wrong number of elements");
2859 SmallPtrSet<const Type*, 4> Visited;
2860 if (!Indices.empty() && !Ty->isSized(&Visited))
2861 return Error(ID.Loc, "base element of getelementptr must be sized");
2863 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
2864 return Error(ID.Loc, "invalid getelementptr indices");
2866 ConstantExpr::getGetElementPtr(Ty, Elts[0], Indices, InBounds);
2867 } else if (Opc == Instruction::Select) {
2868 if (Elts.size() != 3)
2869 return Error(ID.Loc, "expected three operands to select");
2870 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2872 return Error(ID.Loc, Reason);
2873 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2874 } else if (Opc == Instruction::ShuffleVector) {
2875 if (Elts.size() != 3)
2876 return Error(ID.Loc, "expected three operands to shufflevector");
2877 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2878 return Error(ID.Loc, "invalid operands to shufflevector");
2880 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2881 } else if (Opc == Instruction::ExtractElement) {
2882 if (Elts.size() != 2)
2883 return Error(ID.Loc, "expected two operands to extractelement");
2884 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2885 return Error(ID.Loc, "invalid extractelement operands");
2886 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2888 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2889 if (Elts.size() != 3)
2890 return Error(ID.Loc, "expected three operands to insertelement");
2891 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2892 return Error(ID.Loc, "invalid insertelement operands");
2894 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2897 ID.Kind = ValID::t_Constant;
2906 /// ParseGlobalValue - Parse a global value with the specified type.
2907 bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
2911 bool Parsed = ParseValID(ID) ||
2912 ConvertValIDToValue(Ty, ID, V, nullptr);
2913 if (V && !(C = dyn_cast<Constant>(V)))
2914 return Error(ID.Loc, "global values must be constants");
2918 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2920 return ParseType(Ty) ||
2921 ParseGlobalValue(Ty, V);
2924 bool LLParser::parseOptionalComdat(StringRef GlobalName, Comdat *&C) {
2927 LocTy KwLoc = Lex.getLoc();
2928 if (!EatIfPresent(lltok::kw_comdat))
2931 if (EatIfPresent(lltok::lparen)) {
2932 if (Lex.getKind() != lltok::ComdatVar)
2933 return TokError("expected comdat variable");
2934 C = getComdat(Lex.getStrVal(), Lex.getLoc());
2936 if (ParseToken(lltok::rparen, "expected ')' after comdat var"))
2939 if (GlobalName.empty())
2940 return TokError("comdat cannot be unnamed");
2941 C = getComdat(GlobalName, KwLoc);
2947 /// ParseGlobalValueVector
2949 /// ::= TypeAndValue (',' TypeAndValue)*
2950 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant *> &Elts) {
2952 if (Lex.getKind() == lltok::rbrace ||
2953 Lex.getKind() == lltok::rsquare ||
2954 Lex.getKind() == lltok::greater ||
2955 Lex.getKind() == lltok::rparen)
2959 if (ParseGlobalTypeAndValue(C)) return true;
2962 while (EatIfPresent(lltok::comma)) {
2963 if (ParseGlobalTypeAndValue(C)) return true;
2970 bool LLParser::ParseMDTuple(MDNode *&MD, bool IsDistinct) {
2971 SmallVector<Metadata *, 16> Elts;
2972 if (ParseMDNodeVector(Elts))
2975 MD = (IsDistinct ? MDTuple::getDistinct : MDTuple::get)(Context, Elts);
2982 /// ::= !MDLocation(...)
2983 bool LLParser::ParseMDNode(MDNode *&N) {
2984 if (Lex.getKind() == lltok::MetadataVar)
2985 return ParseSpecializedMDNode(N);
2987 return ParseToken(lltok::exclaim, "expected '!' here") ||
2991 bool LLParser::ParseMDNodeTail(MDNode *&N) {
2993 if (Lex.getKind() == lltok::lbrace)
2994 return ParseMDTuple(N);
2997 return ParseMDNodeID(N);
3002 /// Structure to represent an optional metadata field.
3003 template <class FieldTy> struct MDFieldImpl {
3004 typedef MDFieldImpl ImplTy;
3008 void assign(FieldTy Val) {
3010 this->Val = std::move(Val);
3013 explicit MDFieldImpl(FieldTy Default)
3014 : Val(std::move(Default)), Seen(false) {}
3017 struct MDUnsignedField : public MDFieldImpl<uint64_t> {
3020 MDUnsignedField(uint64_t Default = 0, uint64_t Max = UINT64_MAX)
3021 : ImplTy(Default), Max(Max) {}
3023 struct LineField : public MDUnsignedField {
3024 LineField() : MDUnsignedField(0, UINT32_MAX) {}
3026 struct ColumnField : public MDUnsignedField {
3027 ColumnField() : MDUnsignedField(0, UINT16_MAX) {}
3029 struct DwarfTagField : public MDUnsignedField {
3030 DwarfTagField() : MDUnsignedField(0, dwarf::DW_TAG_hi_user) {}
3031 DwarfTagField(dwarf::Tag DefaultTag)
3032 : MDUnsignedField(DefaultTag, dwarf::DW_TAG_hi_user) {}
3034 struct DwarfAttEncodingField : public MDUnsignedField {
3035 DwarfAttEncodingField() : MDUnsignedField(0, dwarf::DW_ATE_hi_user) {}
3037 struct DwarfVirtualityField : public MDUnsignedField {
3038 DwarfVirtualityField() : MDUnsignedField(0, dwarf::DW_VIRTUALITY_max) {}
3040 struct DwarfLangField : public MDUnsignedField {
3041 DwarfLangField() : MDUnsignedField(0, dwarf::DW_LANG_hi_user) {}
3044 struct DIFlagField : public MDUnsignedField {
3045 DIFlagField() : MDUnsignedField(0, UINT32_MAX) {}
3048 struct MDSignedField : public MDFieldImpl<int64_t> {
3052 MDSignedField(int64_t Default = 0)
3053 : ImplTy(Default), Min(INT64_MIN), Max(INT64_MAX) {}
3054 MDSignedField(int64_t Default, int64_t Min, int64_t Max)
3055 : ImplTy(Default), Min(Min), Max(Max) {}
3058 struct MDBoolField : public MDFieldImpl<bool> {
3059 MDBoolField(bool Default = false) : ImplTy(Default) {}
3061 struct MDField : public MDFieldImpl<Metadata *> {
3064 MDField(bool AllowNull = true) : ImplTy(nullptr), AllowNull(AllowNull) {}
3066 struct MDConstant : public MDFieldImpl<ConstantAsMetadata *> {
3067 MDConstant() : ImplTy(nullptr) {}
3069 struct MDStringField : public MDFieldImpl<MDString *> {
3071 MDStringField(bool AllowEmpty = true)
3072 : ImplTy(nullptr), AllowEmpty(AllowEmpty) {}
3074 struct MDFieldList : public MDFieldImpl<SmallVector<Metadata *, 4>> {
3075 MDFieldList() : ImplTy(SmallVector<Metadata *, 4>()) {}
3083 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3084 MDUnsignedField &Result) {
3085 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
3086 return TokError("expected unsigned integer");
3088 auto &U = Lex.getAPSIntVal();
3089 if (U.ugt(Result.Max))
3090 return TokError("value for '" + Name + "' too large, limit is " +
3092 Result.assign(U.getZExtValue());
3093 assert(Result.Val <= Result.Max && "Expected value in range");
3099 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, LineField &Result) {
3100 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3103 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, ColumnField &Result) {
3104 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3108 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfTagField &Result) {
3109 if (Lex.getKind() == lltok::APSInt)
3110 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3112 if (Lex.getKind() != lltok::DwarfTag)
3113 return TokError("expected DWARF tag");
3115 unsigned Tag = dwarf::getTag(Lex.getStrVal());
3116 if (Tag == dwarf::DW_TAG_invalid)
3117 return TokError("invalid DWARF tag" + Twine(" '") + Lex.getStrVal() + "'");
3118 assert(Tag <= Result.Max && "Expected valid DWARF tag");
3126 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3127 DwarfVirtualityField &Result) {
3128 if (Lex.getKind() == lltok::APSInt)
3129 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3131 if (Lex.getKind() != lltok::DwarfVirtuality)
3132 return TokError("expected DWARF virtuality code");
3134 unsigned Virtuality = dwarf::getVirtuality(Lex.getStrVal());
3136 return TokError("invalid DWARF virtuality code" + Twine(" '") +
3137 Lex.getStrVal() + "'");
3138 assert(Virtuality <= Result.Max && "Expected valid DWARF virtuality code");
3139 Result.assign(Virtuality);
3145 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfLangField &Result) {
3146 if (Lex.getKind() == lltok::APSInt)
3147 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3149 if (Lex.getKind() != lltok::DwarfLang)
3150 return TokError("expected DWARF language");
3152 unsigned Lang = dwarf::getLanguage(Lex.getStrVal());
3154 return TokError("invalid DWARF language" + Twine(" '") + Lex.getStrVal() +
3156 assert(Lang <= Result.Max && "Expected valid DWARF language");
3157 Result.assign(Lang);
3163 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3164 DwarfAttEncodingField &Result) {
3165 if (Lex.getKind() == lltok::APSInt)
3166 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3168 if (Lex.getKind() != lltok::DwarfAttEncoding)
3169 return TokError("expected DWARF type attribute encoding");
3171 unsigned Encoding = dwarf::getAttributeEncoding(Lex.getStrVal());
3173 return TokError("invalid DWARF type attribute encoding" + Twine(" '") +
3174 Lex.getStrVal() + "'");
3175 assert(Encoding <= Result.Max && "Expected valid DWARF language");
3176 Result.assign(Encoding);
3183 /// ::= DIFlagVector
3184 /// ::= DIFlagVector '|' DIFlagFwdDecl '|' uint32 '|' DIFlagPublic
3186 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DIFlagField &Result) {
3187 assert(Result.Max == UINT32_MAX && "Expected only 32-bits");
3189 // Parser for a single flag.
3190 auto parseFlag = [&](unsigned &Val) {
3191 if (Lex.getKind() == lltok::APSInt && !Lex.getAPSIntVal().isSigned())
3192 return ParseUInt32(Val);
3194 if (Lex.getKind() != lltok::DIFlag)
3195 return TokError("expected debug info flag");
3197 Val = DebugNode::getFlag(Lex.getStrVal());
3199 return TokError(Twine("invalid debug info flag flag '") +
3200 Lex.getStrVal() + "'");
3205 // Parse the flags and combine them together.
3206 unsigned Combined = 0;
3212 } while (EatIfPresent(lltok::bar));
3214 Result.assign(Combined);
3219 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3220 MDSignedField &Result) {
3221 if (Lex.getKind() != lltok::APSInt)
3222 return TokError("expected signed integer");
3224 auto &S = Lex.getAPSIntVal();
3226 return TokError("value for '" + Name + "' too small, limit is " +
3229 return TokError("value for '" + Name + "' too large, limit is " +
3231 Result.assign(S.getExtValue());
3232 assert(Result.Val >= Result.Min && "Expected value in range");
3233 assert(Result.Val <= Result.Max && "Expected value in range");
3239 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDBoolField &Result) {
3240 switch (Lex.getKind()) {
3242 return TokError("expected 'true' or 'false'");
3243 case lltok::kw_true:
3244 Result.assign(true);
3246 case lltok::kw_false:
3247 Result.assign(false);
3255 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDField &Result) {
3256 if (Lex.getKind() == lltok::kw_null) {
3257 if (!Result.AllowNull)
3258 return TokError("'" + Name + "' cannot be null");
3260 Result.assign(nullptr);
3265 if (ParseMetadata(MD, nullptr))
3273 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDConstant &Result) {
3275 if (ParseValueAsMetadata(MD, "expected constant", nullptr))
3278 Result.assign(cast<ConstantAsMetadata>(MD));
3283 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDStringField &Result) {
3284 LocTy ValueLoc = Lex.getLoc();
3286 if (ParseStringConstant(S))
3289 if (!Result.AllowEmpty && S.empty())
3290 return Error(ValueLoc, "'" + Name + "' cannot be empty");
3292 Result.assign(S.empty() ? nullptr : MDString::get(Context, S));
3297 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDFieldList &Result) {
3298 SmallVector<Metadata *, 4> MDs;
3299 if (ParseMDNodeVector(MDs))
3302 Result.assign(std::move(MDs));
3306 } // end namespace llvm
3308 template <class ParserTy>
3309 bool LLParser::ParseMDFieldsImplBody(ParserTy parseField) {
3311 if (Lex.getKind() != lltok::LabelStr)
3312 return TokError("expected field label here");
3316 } while (EatIfPresent(lltok::comma));
3321 template <class ParserTy>
3322 bool LLParser::ParseMDFieldsImpl(ParserTy parseField, LocTy &ClosingLoc) {
3323 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3326 if (ParseToken(lltok::lparen, "expected '(' here"))
3328 if (Lex.getKind() != lltok::rparen)
3329 if (ParseMDFieldsImplBody(parseField))
3332 ClosingLoc = Lex.getLoc();
3333 return ParseToken(lltok::rparen, "expected ')' here");
3336 template <class FieldTy>
3337 bool LLParser::ParseMDField(StringRef Name, FieldTy &Result) {
3339 return TokError("field '" + Name + "' cannot be specified more than once");
3341 LocTy Loc = Lex.getLoc();
3343 return ParseMDField(Loc, Name, Result);
3346 bool LLParser::ParseSpecializedMDNode(MDNode *&N, bool IsDistinct) {
3347 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3349 #define HANDLE_SPECIALIZED_MDNODE_LEAF(CLASS) \
3350 if (Lex.getStrVal() == #CLASS) \
3351 return Parse##CLASS(N, IsDistinct);
3352 #include "llvm/IR/Metadata.def"
3354 return TokError("expected metadata type");
3357 #define DECLARE_FIELD(NAME, TYPE, INIT) TYPE NAME INIT
3358 #define NOP_FIELD(NAME, TYPE, INIT)
3359 #define REQUIRE_FIELD(NAME, TYPE, INIT) \
3361 return Error(ClosingLoc, "missing required field '" #NAME "'");
3362 #define PARSE_MD_FIELD(NAME, TYPE, DEFAULT) \
3363 if (Lex.getStrVal() == #NAME) \
3364 return ParseMDField(#NAME, NAME);
3365 #define PARSE_MD_FIELDS() \
3366 VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) \
3369 if (ParseMDFieldsImpl([&]() -> bool { \
3370 VISIT_MD_FIELDS(PARSE_MD_FIELD, PARSE_MD_FIELD) \
3371 return TokError(Twine("invalid field '") + Lex.getStrVal() + "'"); \
3374 VISIT_MD_FIELDS(NOP_FIELD, REQUIRE_FIELD) \
3376 #define GET_OR_DISTINCT(CLASS, ARGS) \
3377 (IsDistinct ? CLASS::getDistinct ARGS : CLASS::get ARGS)
3379 /// ParseMDLocationFields:
3380 /// ::= !MDLocation(line: 43, column: 8, scope: !5, inlinedAt: !6)
3381 bool LLParser::ParseMDLocation(MDNode *&Result, bool IsDistinct) {
3382 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3383 OPTIONAL(line, LineField, ); \
3384 OPTIONAL(column, ColumnField, ); \
3385 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3386 OPTIONAL(inlinedAt, MDField, );
3388 #undef VISIT_MD_FIELDS
3390 Result = GET_OR_DISTINCT(
3391 MDLocation, (Context, line.Val, column.Val, scope.Val, inlinedAt.Val));
3395 /// ParseGenericDebugNode:
3396 /// ::= !GenericDebugNode(tag: 15, header: "...", operands: {...})
3397 bool LLParser::ParseGenericDebugNode(MDNode *&Result, bool IsDistinct) {
3398 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3399 REQUIRED(tag, DwarfTagField, ); \
3400 OPTIONAL(header, MDStringField, ); \
3401 OPTIONAL(operands, MDFieldList, );
3403 #undef VISIT_MD_FIELDS
3405 Result = GET_OR_DISTINCT(GenericDebugNode,
3406 (Context, tag.Val, header.Val, operands.Val));
3410 /// ParseMDSubrange:
3411 /// ::= !MDSubrange(count: 30, lowerBound: 2)
3412 bool LLParser::ParseMDSubrange(MDNode *&Result, bool IsDistinct) {
3413 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3414 REQUIRED(count, MDSignedField, (-1, -1, INT64_MAX)); \
3415 OPTIONAL(lowerBound, MDSignedField, );
3417 #undef VISIT_MD_FIELDS
3419 Result = GET_OR_DISTINCT(MDSubrange, (Context, count.Val, lowerBound.Val));
3423 /// ParseMDEnumerator:
3424 /// ::= !MDEnumerator(value: 30, name: "SomeKind")
3425 bool LLParser::ParseMDEnumerator(MDNode *&Result, bool IsDistinct) {
3426 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3427 REQUIRED(name, MDStringField, ); \
3428 REQUIRED(value, MDSignedField, );
3430 #undef VISIT_MD_FIELDS
3432 Result = GET_OR_DISTINCT(MDEnumerator, (Context, value.Val, name.Val));
3436 /// ParseMDBasicType:
3437 /// ::= !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32)
3438 bool LLParser::ParseMDBasicType(MDNode *&Result, bool IsDistinct) {
3439 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3440 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_base_type)); \
3441 OPTIONAL(name, MDStringField, ); \
3442 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3443 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3444 OPTIONAL(encoding, DwarfAttEncodingField, );
3446 #undef VISIT_MD_FIELDS
3448 Result = GET_OR_DISTINCT(MDBasicType, (Context, tag.Val, name.Val, size.Val,
3449 align.Val, encoding.Val));
3453 /// ParseMDDerivedType:
3454 /// ::= !MDDerivedType(tag: DW_TAG_pointer_type, name: "int", file: !0,
3455 /// line: 7, scope: !1, baseType: !2, size: 32,
3456 /// align: 32, offset: 0, flags: 0, extraData: !3)
3457 bool LLParser::ParseMDDerivedType(MDNode *&Result, bool IsDistinct) {
3458 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3459 REQUIRED(tag, DwarfTagField, ); \
3460 OPTIONAL(name, MDStringField, ); \
3461 OPTIONAL(file, MDField, ); \
3462 OPTIONAL(line, LineField, ); \
3463 OPTIONAL(scope, MDField, ); \
3464 REQUIRED(baseType, MDField, ); \
3465 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3466 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3467 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX)); \
3468 OPTIONAL(flags, DIFlagField, ); \
3469 OPTIONAL(extraData, MDField, );
3471 #undef VISIT_MD_FIELDS
3473 Result = GET_OR_DISTINCT(MDDerivedType,
3474 (Context, tag.Val, name.Val, file.Val, line.Val,
3475 scope.Val, baseType.Val, size.Val, align.Val,
3476 offset.Val, flags.Val, extraData.Val));
3480 bool LLParser::ParseMDCompositeType(MDNode *&Result, bool IsDistinct) {
3481 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3482 REQUIRED(tag, DwarfTagField, ); \
3483 OPTIONAL(name, MDStringField, ); \
3484 OPTIONAL(file, MDField, ); \
3485 OPTIONAL(line, LineField, ); \
3486 OPTIONAL(scope, MDField, ); \
3487 OPTIONAL(baseType, MDField, ); \
3488 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3489 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3490 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX)); \
3491 OPTIONAL(flags, DIFlagField, ); \
3492 OPTIONAL(elements, MDField, ); \
3493 OPTIONAL(runtimeLang, DwarfLangField, ); \
3494 OPTIONAL(vtableHolder, MDField, ); \
3495 OPTIONAL(templateParams, MDField, ); \
3496 OPTIONAL(identifier, MDStringField, );
3498 #undef VISIT_MD_FIELDS
3500 Result = GET_OR_DISTINCT(
3502 (Context, tag.Val, name.Val, file.Val, line.Val, scope.Val, baseType.Val,
3503 size.Val, align.Val, offset.Val, flags.Val, elements.Val,
3504 runtimeLang.Val, vtableHolder.Val, templateParams.Val, identifier.Val));
3508 bool LLParser::ParseMDSubroutineType(MDNode *&Result, bool IsDistinct) {
3509 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3510 OPTIONAL(flags, DIFlagField, ); \
3511 REQUIRED(types, MDField, );
3513 #undef VISIT_MD_FIELDS
3515 Result = GET_OR_DISTINCT(MDSubroutineType, (Context, flags.Val, types.Val));
3519 /// ParseMDFileType:
3520 /// ::= !MDFileType(filename: "path/to/file", directory: "/path/to/dir")
3521 bool LLParser::ParseMDFile(MDNode *&Result, bool IsDistinct) {
3522 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3523 REQUIRED(filename, MDStringField, ); \
3524 REQUIRED(directory, MDStringField, );
3526 #undef VISIT_MD_FIELDS
3528 Result = GET_OR_DISTINCT(MDFile, (Context, filename.Val, directory.Val));
3532 /// ParseMDCompileUnit:
3533 /// ::= !MDCompileUnit(language: DW_LANG_C99, file: !0, producer: "clang",
3534 /// isOptimized: true, flags: "-O2", runtimeVersion: 1,
3535 /// splitDebugFilename: "abc.debug", emissionKind: 1,
3536 /// enums: !1, retainedTypes: !2, subprograms: !3,
3537 /// globals: !4, imports: !5)
3538 bool LLParser::ParseMDCompileUnit(MDNode *&Result, bool IsDistinct) {
3539 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3540 REQUIRED(language, DwarfLangField, ); \
3541 REQUIRED(file, MDField, (/* AllowNull */ false)); \
3542 OPTIONAL(producer, MDStringField, ); \
3543 OPTIONAL(isOptimized, MDBoolField, ); \
3544 OPTIONAL(flags, MDStringField, ); \
3545 OPTIONAL(runtimeVersion, MDUnsignedField, (0, UINT32_MAX)); \
3546 OPTIONAL(splitDebugFilename, MDStringField, ); \
3547 OPTIONAL(emissionKind, MDUnsignedField, (0, UINT32_MAX)); \
3548 OPTIONAL(enums, MDField, ); \
3549 OPTIONAL(retainedTypes, MDField, ); \
3550 OPTIONAL(subprograms, MDField, ); \
3551 OPTIONAL(globals, MDField, ); \
3552 OPTIONAL(imports, MDField, );
3554 #undef VISIT_MD_FIELDS
3556 Result = GET_OR_DISTINCT(MDCompileUnit,
3557 (Context, language.Val, file.Val, producer.Val,
3558 isOptimized.Val, flags.Val, runtimeVersion.Val,
3559 splitDebugFilename.Val, emissionKind.Val, enums.Val,
3560 retainedTypes.Val, subprograms.Val, globals.Val,
3565 /// ParseMDSubprogram:
3566 /// ::= !MDSubprogram(scope: !0, name: "foo", linkageName: "_Zfoo",
3567 /// file: !1, line: 7, type: !2, isLocal: false,
3568 /// isDefinition: true, scopeLine: 8, containingType: !3,
3569 /// virtuality: DW_VIRTUALTIY_pure_virtual,
3570 /// virtualIndex: 10, flags: 11,
3571 /// isOptimized: false, function: void ()* @_Z3foov,
3572 /// templateParams: !4, declaration: !5, variables: !6)
3573 bool LLParser::ParseMDSubprogram(MDNode *&Result, bool IsDistinct) {
3574 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3575 OPTIONAL(scope, MDField, ); \
3576 OPTIONAL(name, MDStringField, ); \
3577 OPTIONAL(linkageName, MDStringField, ); \
3578 OPTIONAL(file, MDField, ); \
3579 OPTIONAL(line, LineField, ); \
3580 OPTIONAL(type, MDField, ); \
3581 OPTIONAL(isLocal, MDBoolField, ); \
3582 OPTIONAL(isDefinition, MDBoolField, (true)); \
3583 OPTIONAL(scopeLine, LineField, ); \
3584 OPTIONAL(containingType, MDField, ); \
3585 OPTIONAL(virtuality, DwarfVirtualityField, ); \
3586 OPTIONAL(virtualIndex, MDUnsignedField, (0, UINT32_MAX)); \
3587 OPTIONAL(flags, DIFlagField, ); \
3588 OPTIONAL(isOptimized, MDBoolField, ); \
3589 OPTIONAL(function, MDConstant, ); \
3590 OPTIONAL(templateParams, MDField, ); \
3591 OPTIONAL(declaration, MDField, ); \
3592 OPTIONAL(variables, MDField, );
3594 #undef VISIT_MD_FIELDS
3596 Result = GET_OR_DISTINCT(
3597 MDSubprogram, (Context, scope.Val, name.Val, linkageName.Val, file.Val,
3598 line.Val, type.Val, isLocal.Val, isDefinition.Val,
3599 scopeLine.Val, containingType.Val, virtuality.Val,
3600 virtualIndex.Val, flags.Val, isOptimized.Val, function.Val,
3601 templateParams.Val, declaration.Val, variables.Val));
3605 /// ParseMDLexicalBlock:
3606 /// ::= !MDLexicalBlock(scope: !0, file: !2, line: 7, column: 9)
3607 bool LLParser::ParseMDLexicalBlock(MDNode *&Result, bool IsDistinct) {
3608 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3609 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3610 OPTIONAL(file, MDField, ); \
3611 OPTIONAL(line, LineField, ); \
3612 OPTIONAL(column, ColumnField, );
3614 #undef VISIT_MD_FIELDS
3616 Result = GET_OR_DISTINCT(
3617 MDLexicalBlock, (Context, scope.Val, file.Val, line.Val, column.Val));
3621 /// ParseMDLexicalBlockFile:
3622 /// ::= !MDLexicalBlockFile(scope: !0, file: !2, discriminator: 9)
3623 bool LLParser::ParseMDLexicalBlockFile(MDNode *&Result, bool IsDistinct) {
3624 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3625 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3626 OPTIONAL(file, MDField, ); \
3627 REQUIRED(discriminator, MDUnsignedField, (0, UINT32_MAX));
3629 #undef VISIT_MD_FIELDS
3631 Result = GET_OR_DISTINCT(MDLexicalBlockFile,
3632 (Context, scope.Val, file.Val, discriminator.Val));
3636 /// ParseMDNamespace:
3637 /// ::= !MDNamespace(scope: !0, file: !2, name: "SomeNamespace", line: 9)
3638 bool LLParser::ParseMDNamespace(MDNode *&Result, bool IsDistinct) {
3639 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3640 REQUIRED(scope, MDField, ); \
3641 OPTIONAL(file, MDField, ); \
3642 OPTIONAL(name, MDStringField, ); \
3643 OPTIONAL(line, LineField, );
3645 #undef VISIT_MD_FIELDS
3647 Result = GET_OR_DISTINCT(MDNamespace,
3648 (Context, scope.Val, file.Val, name.Val, line.Val));
3652 /// ParseMDTemplateTypeParameter:
3653 /// ::= !MDTemplateTypeParameter(name: "Ty", type: !1)
3654 bool LLParser::ParseMDTemplateTypeParameter(MDNode *&Result, bool IsDistinct) {
3655 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3656 OPTIONAL(name, MDStringField, ); \
3657 REQUIRED(type, MDField, );
3659 #undef VISIT_MD_FIELDS
3662 GET_OR_DISTINCT(MDTemplateTypeParameter, (Context, name.Val, type.Val));
3666 /// ParseMDTemplateValueParameter:
3667 /// ::= !MDTemplateValueParameter(tag: DW_TAG_template_value_parameter,
3668 /// name: "V", type: !1, value: i32 7)
3669 bool LLParser::ParseMDTemplateValueParameter(MDNode *&Result, bool IsDistinct) {
3670 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3671 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_template_value_parameter)); \
3672 OPTIONAL(name, MDStringField, ); \
3673 OPTIONAL(type, MDField, ); \
3674 REQUIRED(value, MDField, );
3676 #undef VISIT_MD_FIELDS
3678 Result = GET_OR_DISTINCT(MDTemplateValueParameter,
3679 (Context, tag.Val, name.Val, type.Val, value.Val));
3683 /// ParseMDGlobalVariable:
3684 /// ::= !MDGlobalVariable(scope: !0, name: "foo", linkageName: "foo",
3685 /// file: !1, line: 7, type: !2, isLocal: false,
3686 /// isDefinition: true, variable: i32* @foo,
3687 /// declaration: !3)
3688 bool LLParser::ParseMDGlobalVariable(MDNode *&Result, bool IsDistinct) {
3689 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3690 REQUIRED(name, MDStringField, (/* AllowEmpty */ false)); \
3691 OPTIONAL(scope, MDField, ); \
3692 OPTIONAL(linkageName, MDStringField, ); \
3693 OPTIONAL(file, MDField, ); \
3694 OPTIONAL(line, LineField, ); \
3695 OPTIONAL(type, MDField, ); \
3696 OPTIONAL(isLocal, MDBoolField, ); \
3697 OPTIONAL(isDefinition, MDBoolField, (true)); \
3698 OPTIONAL(variable, MDConstant, ); \
3699 OPTIONAL(declaration, MDField, );
3701 #undef VISIT_MD_FIELDS
3703 Result = GET_OR_DISTINCT(MDGlobalVariable,
3704 (Context, scope.Val, name.Val, linkageName.Val,
3705 file.Val, line.Val, type.Val, isLocal.Val,
3706 isDefinition.Val, variable.Val, declaration.Val));
3710 /// ParseMDLocalVariable:
3711 /// ::= !MDLocalVariable(tag: DW_TAG_arg_variable, scope: !0, name: "foo",
3712 /// file: !1, line: 7, type: !2, arg: 2, flags: 7)
3713 bool LLParser::ParseMDLocalVariable(MDNode *&Result, bool IsDistinct) {
3714 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3715 REQUIRED(tag, DwarfTagField, ); \
3716 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3717 OPTIONAL(name, MDStringField, ); \
3718 OPTIONAL(file, MDField, ); \
3719 OPTIONAL(line, LineField, ); \
3720 OPTIONAL(type, MDField, ); \
3721 OPTIONAL(arg, MDUnsignedField, (0, UINT8_MAX)); \
3722 OPTIONAL(flags, DIFlagField, );
3724 #undef VISIT_MD_FIELDS
3726 Result = GET_OR_DISTINCT(MDLocalVariable,
3727 (Context, tag.Val, scope.Val, name.Val, file.Val,
3728 line.Val, type.Val, arg.Val, flags.Val));
3732 /// ParseMDExpression:
3733 /// ::= !MDExpression(0, 7, -1)
3734 bool LLParser::ParseMDExpression(MDNode *&Result, bool IsDistinct) {
3735 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3738 if (ParseToken(lltok::lparen, "expected '(' here"))
3741 SmallVector<uint64_t, 8> Elements;
3742 if (Lex.getKind() != lltok::rparen)
3744 if (Lex.getKind() == lltok::DwarfOp) {
3745 if (unsigned Op = dwarf::getOperationEncoding(Lex.getStrVal())) {
3747 Elements.push_back(Op);
3750 return TokError(Twine("invalid DWARF op '") + Lex.getStrVal() + "'");
3753 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
3754 return TokError("expected unsigned integer");
3756 auto &U = Lex.getAPSIntVal();
3757 if (U.ugt(UINT64_MAX))
3758 return TokError("element too large, limit is " + Twine(UINT64_MAX));
3759 Elements.push_back(U.getZExtValue());
3761 } while (EatIfPresent(lltok::comma));
3763 if (ParseToken(lltok::rparen, "expected ')' here"))
3766 Result = GET_OR_DISTINCT(MDExpression, (Context, Elements));
3770 /// ParseMDObjCProperty:
3771 /// ::= !MDObjCProperty(name: "foo", file: !1, line: 7, setter: "setFoo",
3772 /// getter: "getFoo", attributes: 7, type: !2)
3773 bool LLParser::ParseMDObjCProperty(MDNode *&Result, bool IsDistinct) {
3774 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3775 OPTIONAL(name, MDStringField, ); \
3776 OPTIONAL(file, MDField, ); \
3777 OPTIONAL(line, LineField, ); \
3778 OPTIONAL(setter, MDStringField, ); \
3779 OPTIONAL(getter, MDStringField, ); \
3780 OPTIONAL(attributes, MDUnsignedField, (0, UINT32_MAX)); \
3781 OPTIONAL(type, MDField, );
3783 #undef VISIT_MD_FIELDS
3785 Result = GET_OR_DISTINCT(MDObjCProperty,
3786 (Context, name.Val, file.Val, line.Val, setter.Val,
3787 getter.Val, attributes.Val, type.Val));
3791 /// ParseMDImportedEntity:
3792 /// ::= !MDImportedEntity(tag: DW_TAG_imported_module, scope: !0, entity: !1,
3793 /// line: 7, name: "foo")
3794 bool LLParser::ParseMDImportedEntity(MDNode *&Result, bool IsDistinct) {
3795 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3796 REQUIRED(tag, DwarfTagField, ); \
3797 REQUIRED(scope, MDField, ); \
3798 OPTIONAL(entity, MDField, ); \
3799 OPTIONAL(line, LineField, ); \
3800 OPTIONAL(name, MDStringField, );
3802 #undef VISIT_MD_FIELDS
3804 Result = GET_OR_DISTINCT(MDImportedEntity, (Context, tag.Val, scope.Val,
3805 entity.Val, line.Val, name.Val));
3809 #undef PARSE_MD_FIELD
3811 #undef REQUIRE_FIELD
3812 #undef DECLARE_FIELD
3814 /// ParseMetadataAsValue
3815 /// ::= metadata i32 %local
3816 /// ::= metadata i32 @global
3817 /// ::= metadata i32 7
3819 /// ::= metadata !{...}
3820 /// ::= metadata !"string"
3821 bool LLParser::ParseMetadataAsValue(Value *&V, PerFunctionState &PFS) {
3822 // Note: the type 'metadata' has already been parsed.
3824 if (ParseMetadata(MD, &PFS))
3827 V = MetadataAsValue::get(Context, MD);
3831 /// ParseValueAsMetadata
3835 bool LLParser::ParseValueAsMetadata(Metadata *&MD, const Twine &TypeMsg,
3836 PerFunctionState *PFS) {
3839 if (ParseType(Ty, TypeMsg, Loc))
3841 if (Ty->isMetadataTy())
3842 return Error(Loc, "invalid metadata-value-metadata roundtrip");
3845 if (ParseValue(Ty, V, PFS))
3848 MD = ValueAsMetadata::get(V);
3859 /// ::= !MDLocation(...)
3860 bool LLParser::ParseMetadata(Metadata *&MD, PerFunctionState *PFS) {
3861 if (Lex.getKind() == lltok::MetadataVar) {
3863 if (ParseSpecializedMDNode(N))
3871 if (Lex.getKind() != lltok::exclaim)
3872 return ParseValueAsMetadata(MD, "expected metadata operand", PFS);
3875 assert(Lex.getKind() == lltok::exclaim && "Expected '!' here");
3879 // ::= '!' STRINGCONSTANT
3880 if (Lex.getKind() == lltok::StringConstant) {
3882 if (ParseMDString(S))
3892 if (ParseMDNodeTail(N))
3899 //===----------------------------------------------------------------------===//
3900 // Function Parsing.
3901 //===----------------------------------------------------------------------===//
3903 bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
3904 PerFunctionState *PFS) {
3905 if (Ty->isFunctionTy())
3906 return Error(ID.Loc, "functions are not values, refer to them as pointers");
3909 case ValID::t_LocalID:
3910 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
3911 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
3912 return V == nullptr;
3913 case ValID::t_LocalName:
3914 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
3915 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
3916 return V == nullptr;
3917 case ValID::t_InlineAsm: {
3918 PointerType *PTy = dyn_cast<PointerType>(Ty);
3920 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : nullptr;
3921 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
3922 return Error(ID.Loc, "invalid type for inline asm constraint string");
3923 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1,
3924 (ID.UIntVal>>1)&1, (InlineAsm::AsmDialect(ID.UIntVal>>2)));
3927 case ValID::t_GlobalName:
3928 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
3929 return V == nullptr;
3930 case ValID::t_GlobalID:
3931 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
3932 return V == nullptr;
3933 case ValID::t_APSInt:
3934 if (!Ty->isIntegerTy())
3935 return Error(ID.Loc, "integer constant must have integer type");
3936 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
3937 V = ConstantInt::get(Context, ID.APSIntVal);
3939 case ValID::t_APFloat:
3940 if (!Ty->isFloatingPointTy() ||
3941 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
3942 return Error(ID.Loc, "floating point constant invalid for type");
3944 // The lexer has no type info, so builds all half, float, and double FP
3945 // constants as double. Fix this here. Long double does not need this.
3946 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble) {
3949 ID.APFloatVal.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven,
3951 else if (Ty->isFloatTy())
3952 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
3955 V = ConstantFP::get(Context, ID.APFloatVal);
3957 if (V->getType() != Ty)
3958 return Error(ID.Loc, "floating point constant does not have type '" +
3959 getTypeString(Ty) + "'");
3963 if (!Ty->isPointerTy())
3964 return Error(ID.Loc, "null must be a pointer type");
3965 V = ConstantPointerNull::get(cast<PointerType>(Ty));
3967 case ValID::t_Undef:
3968 // FIXME: LabelTy should not be a first-class type.
3969 if (!Ty->isFirstClassType() || Ty->isLabelTy())
3970 return Error(ID.Loc, "invalid type for undef constant");
3971 V = UndefValue::get(Ty);
3973 case ValID::t_EmptyArray:
3974 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
3975 return Error(ID.Loc, "invalid empty array initializer");
3976 V = UndefValue::get(Ty);
3979 // FIXME: LabelTy should not be a first-class type.
3980 if (!Ty->isFirstClassType() || Ty->isLabelTy())
3981 return Error(ID.Loc, "invalid type for null constant");
3982 V = Constant::getNullValue(Ty);
3984 case ValID::t_Constant:
3985 if (ID.ConstantVal->getType() != Ty)
3986 return Error(ID.Loc, "constant expression type mismatch");
3990 case ValID::t_ConstantStruct:
3991 case ValID::t_PackedConstantStruct:
3992 if (StructType *ST = dyn_cast<StructType>(Ty)) {
3993 if (ST->getNumElements() != ID.UIntVal)
3994 return Error(ID.Loc,
3995 "initializer with struct type has wrong # elements");
3996 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
3997 return Error(ID.Loc, "packed'ness of initializer and type don't match");
3999 // Verify that the elements are compatible with the structtype.
4000 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
4001 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
4002 return Error(ID.Loc, "element " + Twine(i) +
4003 " of struct initializer doesn't match struct element type");
4005 V = ConstantStruct::get(ST, makeArrayRef(ID.ConstantStructElts,
4008 return Error(ID.Loc, "constant expression type mismatch");
4011 llvm_unreachable("Invalid ValID");
4014 bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS) {
4017 return ParseValID(ID, PFS) ||
4018 ConvertValIDToValue(Ty, ID, V, PFS);
4021 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
4023 return ParseType(Ty) ||
4024 ParseValue(Ty, V, PFS);
4027 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
4028 PerFunctionState &PFS) {
4031 if (ParseTypeAndValue(V, PFS)) return true;
4032 if (!isa<BasicBlock>(V))
4033 return Error(Loc, "expected a basic block");
4034 BB = cast<BasicBlock>(V);
4040 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
4041 /// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
4042 /// OptionalAlign OptGC OptionalPrefix OptionalPrologue
4043 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
4044 // Parse the linkage.
4045 LocTy LinkageLoc = Lex.getLoc();
4048 unsigned Visibility;
4049 unsigned DLLStorageClass;
4050 AttrBuilder RetAttrs;
4052 Type *RetType = nullptr;
4053 LocTy RetTypeLoc = Lex.getLoc();
4054 if (ParseOptionalLinkage(Linkage) ||
4055 ParseOptionalVisibility(Visibility) ||
4056 ParseOptionalDLLStorageClass(DLLStorageClass) ||
4057 ParseOptionalCallingConv(CC) ||
4058 ParseOptionalReturnAttrs(RetAttrs) ||
4059 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
4062 // Verify that the linkage is ok.
4063 switch ((GlobalValue::LinkageTypes)Linkage) {
4064 case GlobalValue::ExternalLinkage:
4065 break; // always ok.
4066 case GlobalValue::ExternalWeakLinkage:
4068 return Error(LinkageLoc, "invalid linkage for function definition");
4070 case GlobalValue::PrivateLinkage:
4071 case GlobalValue::InternalLinkage:
4072 case GlobalValue::AvailableExternallyLinkage:
4073 case GlobalValue::LinkOnceAnyLinkage:
4074 case GlobalValue::LinkOnceODRLinkage:
4075 case GlobalValue::WeakAnyLinkage:
4076 case GlobalValue::WeakODRLinkage:
4078 return Error(LinkageLoc, "invalid linkage for function declaration");
4080 case GlobalValue::AppendingLinkage:
4081 case GlobalValue::CommonLinkage:
4082 return Error(LinkageLoc, "invalid function linkage type");
4085 if (!isValidVisibilityForLinkage(Visibility, Linkage))
4086 return Error(LinkageLoc,
4087 "symbol with local linkage must have default visibility");
4089 if (!FunctionType::isValidReturnType(RetType))
4090 return Error(RetTypeLoc, "invalid function return type");
4092 LocTy NameLoc = Lex.getLoc();
4094 std::string FunctionName;
4095 if (Lex.getKind() == lltok::GlobalVar) {
4096 FunctionName = Lex.getStrVal();
4097 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
4098 unsigned NameID = Lex.getUIntVal();
4100 if (NameID != NumberedVals.size())
4101 return TokError("function expected to be numbered '%" +
4102 Twine(NumberedVals.size()) + "'");
4104 return TokError("expected function name");
4109 if (Lex.getKind() != lltok::lparen)
4110 return TokError("expected '(' in function argument list");
4112 SmallVector<ArgInfo, 8> ArgList;
4114 AttrBuilder FuncAttrs;
4115 std::vector<unsigned> FwdRefAttrGrps;
4117 std::string Section;
4121 LocTy UnnamedAddrLoc;
4122 Constant *Prefix = nullptr;
4123 Constant *Prologue = nullptr;
4126 if (ParseArgumentList(ArgList, isVarArg) ||
4127 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
4129 ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false,
4131 (EatIfPresent(lltok::kw_section) &&
4132 ParseStringConstant(Section)) ||
4133 parseOptionalComdat(FunctionName, C) ||
4134 ParseOptionalAlignment(Alignment) ||
4135 (EatIfPresent(lltok::kw_gc) &&
4136 ParseStringConstant(GC)) ||
4137 (EatIfPresent(lltok::kw_prefix) &&
4138 ParseGlobalTypeAndValue(Prefix)) ||
4139 (EatIfPresent(lltok::kw_prologue) &&
4140 ParseGlobalTypeAndValue(Prologue)))
4143 if (FuncAttrs.contains(Attribute::Builtin))
4144 return Error(BuiltinLoc, "'builtin' attribute not valid on function");
4146 // If the alignment was parsed as an attribute, move to the alignment field.
4147 if (FuncAttrs.hasAlignmentAttr()) {
4148 Alignment = FuncAttrs.getAlignment();
4149 FuncAttrs.removeAttribute(Attribute::Alignment);
4152 // Okay, if we got here, the function is syntactically valid. Convert types
4153 // and do semantic checks.
4154 std::vector<Type*> ParamTypeList;
4155 SmallVector<AttributeSet, 8> Attrs;
4157 if (RetAttrs.hasAttributes())
4158 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4159 AttributeSet::ReturnIndex,
4162 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
4163 ParamTypeList.push_back(ArgList[i].Ty);
4164 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
4165 AttrBuilder B(ArgList[i].Attrs, i + 1);
4166 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
4170 if (FuncAttrs.hasAttributes())
4171 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4172 AttributeSet::FunctionIndex,
4175 AttributeSet PAL = AttributeSet::get(Context, Attrs);
4177 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
4178 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
4181 FunctionType::get(RetType, ParamTypeList, isVarArg);
4182 PointerType *PFT = PointerType::getUnqual(FT);
4185 if (!FunctionName.empty()) {
4186 // If this was a definition of a forward reference, remove the definition
4187 // from the forward reference table and fill in the forward ref.
4188 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
4189 ForwardRefVals.find(FunctionName);
4190 if (FRVI != ForwardRefVals.end()) {
4191 Fn = M->getFunction(FunctionName);
4193 return Error(FRVI->second.second, "invalid forward reference to "
4194 "function as global value!");
4195 if (Fn->getType() != PFT)
4196 return Error(FRVI->second.second, "invalid forward reference to "
4197 "function '" + FunctionName + "' with wrong type!");
4199 ForwardRefVals.erase(FRVI);
4200 } else if ((Fn = M->getFunction(FunctionName))) {
4201 // Reject redefinitions.
4202 return Error(NameLoc, "invalid redefinition of function '" +
4203 FunctionName + "'");
4204 } else if (M->getNamedValue(FunctionName)) {
4205 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
4209 // If this is a definition of a forward referenced function, make sure the
4211 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
4212 = ForwardRefValIDs.find(NumberedVals.size());
4213 if (I != ForwardRefValIDs.end()) {
4214 Fn = cast<Function>(I->second.first);
4215 if (Fn->getType() != PFT)
4216 return Error(NameLoc, "type of definition and forward reference of '@" +
4217 Twine(NumberedVals.size()) + "' disagree");
4218 ForwardRefValIDs.erase(I);
4223 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
4224 else // Move the forward-reference to the correct spot in the module.
4225 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
4227 if (FunctionName.empty())
4228 NumberedVals.push_back(Fn);
4230 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
4231 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
4232 Fn->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
4233 Fn->setCallingConv(CC);
4234 Fn->setAttributes(PAL);
4235 Fn->setUnnamedAddr(UnnamedAddr);
4236 Fn->setAlignment(Alignment);
4237 Fn->setSection(Section);
4239 if (!GC.empty()) Fn->setGC(GC.c_str());
4240 Fn->setPrefixData(Prefix);
4241 Fn->setPrologueData(Prologue);
4242 ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
4244 // Add all of the arguments we parsed to the function.
4245 Function::arg_iterator ArgIt = Fn->arg_begin();
4246 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
4247 // If the argument has a name, insert it into the argument symbol table.
4248 if (ArgList[i].Name.empty()) continue;
4250 // Set the name, if it conflicted, it will be auto-renamed.
4251 ArgIt->setName(ArgList[i].Name);
4253 if (ArgIt->getName() != ArgList[i].Name)
4254 return Error(ArgList[i].Loc, "redefinition of argument '%" +
4255 ArgList[i].Name + "'");
4261 // Check the declaration has no block address forward references.
4263 if (FunctionName.empty()) {
4264 ID.Kind = ValID::t_GlobalID;
4265 ID.UIntVal = NumberedVals.size() - 1;
4267 ID.Kind = ValID::t_GlobalName;
4268 ID.StrVal = FunctionName;
4270 auto Blocks = ForwardRefBlockAddresses.find(ID);
4271 if (Blocks != ForwardRefBlockAddresses.end())
4272 return Error(Blocks->first.Loc,
4273 "cannot take blockaddress inside a declaration");
4277 bool LLParser::PerFunctionState::resolveForwardRefBlockAddresses() {
4279 if (FunctionNumber == -1) {
4280 ID.Kind = ValID::t_GlobalName;
4281 ID.StrVal = F.getName();
4283 ID.Kind = ValID::t_GlobalID;
4284 ID.UIntVal = FunctionNumber;
4287 auto Blocks = P.ForwardRefBlockAddresses.find(ID);
4288 if (Blocks == P.ForwardRefBlockAddresses.end())
4291 for (const auto &I : Blocks->second) {
4292 const ValID &BBID = I.first;
4293 GlobalValue *GV = I.second;
4295 assert((BBID.Kind == ValID::t_LocalID || BBID.Kind == ValID::t_LocalName) &&
4296 "Expected local id or name");
4298 if (BBID.Kind == ValID::t_LocalName)
4299 BB = GetBB(BBID.StrVal, BBID.Loc);
4301 BB = GetBB(BBID.UIntVal, BBID.Loc);
4303 return P.Error(BBID.Loc, "referenced value is not a basic block");
4305 GV->replaceAllUsesWith(BlockAddress::get(&F, BB));
4306 GV->eraseFromParent();
4309 P.ForwardRefBlockAddresses.erase(Blocks);
4313 /// ParseFunctionBody
4314 /// ::= '{' BasicBlock+ UseListOrderDirective* '}'
4315 bool LLParser::ParseFunctionBody(Function &Fn) {
4316 if (Lex.getKind() != lltok::lbrace)
4317 return TokError("expected '{' in function body");
4318 Lex.Lex(); // eat the {.
4320 int FunctionNumber = -1;
4321 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
4323 PerFunctionState PFS(*this, Fn, FunctionNumber);
4325 // Resolve block addresses and allow basic blocks to be forward-declared
4326 // within this function.
4327 if (PFS.resolveForwardRefBlockAddresses())
4329 SaveAndRestore<PerFunctionState *> ScopeExit(BlockAddressPFS, &PFS);
4331 // We need at least one basic block.
4332 if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_uselistorder)
4333 return TokError("function body requires at least one basic block");
4335 while (Lex.getKind() != lltok::rbrace &&
4336 Lex.getKind() != lltok::kw_uselistorder)
4337 if (ParseBasicBlock(PFS)) return true;
4339 while (Lex.getKind() != lltok::rbrace)
4340 if (ParseUseListOrder(&PFS))
4346 // Verify function is ok.
4347 return PFS.FinishFunction();
4351 /// ::= LabelStr? Instruction*
4352 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
4353 // If this basic block starts out with a name, remember it.
4355 LocTy NameLoc = Lex.getLoc();
4356 if (Lex.getKind() == lltok::LabelStr) {
4357 Name = Lex.getStrVal();
4361 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
4363 return Error(NameLoc,
4364 "unable to create block named '" + Name + "'");
4366 std::string NameStr;
4368 // Parse the instructions in this block until we get a terminator.
4371 // This instruction may have three possibilities for a name: a) none
4372 // specified, b) name specified "%foo =", c) number specified: "%4 =".
4373 LocTy NameLoc = Lex.getLoc();
4377 if (Lex.getKind() == lltok::LocalVarID) {
4378 NameID = Lex.getUIntVal();
4380 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
4382 } else if (Lex.getKind() == lltok::LocalVar) {
4383 NameStr = Lex.getStrVal();
4385 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
4389 switch (ParseInstruction(Inst, BB, PFS)) {
4390 default: llvm_unreachable("Unknown ParseInstruction result!");
4391 case InstError: return true;
4393 BB->getInstList().push_back(Inst);
4395 // With a normal result, we check to see if the instruction is followed by
4396 // a comma and metadata.
4397 if (EatIfPresent(lltok::comma))
4398 if (ParseInstructionMetadata(*Inst))
4401 case InstExtraComma:
4402 BB->getInstList().push_back(Inst);
4404 // If the instruction parser ate an extra comma at the end of it, it
4405 // *must* be followed by metadata.
4406 if (ParseInstructionMetadata(*Inst))
4411 // Set the name on the instruction.
4412 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
4413 } while (!isa<TerminatorInst>(Inst));
4418 //===----------------------------------------------------------------------===//
4419 // Instruction Parsing.
4420 //===----------------------------------------------------------------------===//
4422 /// ParseInstruction - Parse one of the many different instructions.
4424 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
4425 PerFunctionState &PFS) {
4426 lltok::Kind Token = Lex.getKind();
4427 if (Token == lltok::Eof)
4428 return TokError("found end of file when expecting more instructions");
4429 LocTy Loc = Lex.getLoc();
4430 unsigned KeywordVal = Lex.getUIntVal();
4431 Lex.Lex(); // Eat the keyword.
4434 default: return Error(Loc, "expected instruction opcode");
4435 // Terminator Instructions.
4436 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
4437 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
4438 case lltok::kw_br: return ParseBr(Inst, PFS);
4439 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
4440 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
4441 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
4442 case lltok::kw_resume: return ParseResume(Inst, PFS);
4443 // Binary Operators.
4447 case lltok::kw_shl: {
4448 bool NUW = EatIfPresent(lltok::kw_nuw);
4449 bool NSW = EatIfPresent(lltok::kw_nsw);
4450 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
4452 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
4454 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
4455 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
4458 case lltok::kw_fadd:
4459 case lltok::kw_fsub:
4460 case lltok::kw_fmul:
4461 case lltok::kw_fdiv:
4462 case lltok::kw_frem: {
4463 FastMathFlags FMF = EatFastMathFlagsIfPresent();
4464 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
4468 Inst->setFastMathFlags(FMF);
4472 case lltok::kw_sdiv:
4473 case lltok::kw_udiv:
4474 case lltok::kw_lshr:
4475 case lltok::kw_ashr: {
4476 bool Exact = EatIfPresent(lltok::kw_exact);
4478 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
4479 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
4483 case lltok::kw_urem:
4484 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
4487 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
4488 case lltok::kw_icmp:
4489 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
4491 case lltok::kw_trunc:
4492 case lltok::kw_zext:
4493 case lltok::kw_sext:
4494 case lltok::kw_fptrunc:
4495 case lltok::kw_fpext:
4496 case lltok::kw_bitcast:
4497 case lltok::kw_addrspacecast:
4498 case lltok::kw_uitofp:
4499 case lltok::kw_sitofp:
4500 case lltok::kw_fptoui:
4501 case lltok::kw_fptosi:
4502 case lltok::kw_inttoptr:
4503 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
4505 case lltok::kw_select: return ParseSelect(Inst, PFS);
4506 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
4507 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
4508 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
4509 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
4510 case lltok::kw_phi: return ParsePHI(Inst, PFS);
4511 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
4513 case lltok::kw_call: return ParseCall(Inst, PFS, CallInst::TCK_None);
4514 case lltok::kw_tail: return ParseCall(Inst, PFS, CallInst::TCK_Tail);
4515 case lltok::kw_musttail: return ParseCall(Inst, PFS, CallInst::TCK_MustTail);
4517 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
4518 case lltok::kw_load: return ParseLoad(Inst, PFS);
4519 case lltok::kw_store: return ParseStore(Inst, PFS);
4520 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
4521 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
4522 case lltok::kw_fence: return ParseFence(Inst, PFS);
4523 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
4524 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
4525 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
4529 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
4530 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
4531 if (Opc == Instruction::FCmp) {
4532 switch (Lex.getKind()) {
4533 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
4534 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
4535 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
4536 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
4537 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
4538 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
4539 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
4540 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
4541 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
4542 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
4543 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
4544 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
4545 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
4546 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
4547 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
4548 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
4549 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
4552 switch (Lex.getKind()) {
4553 default: return TokError("expected icmp predicate (e.g. 'eq')");
4554 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
4555 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
4556 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
4557 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
4558 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
4559 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
4560 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
4561 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
4562 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
4563 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
4570 //===----------------------------------------------------------------------===//
4571 // Terminator Instructions.
4572 //===----------------------------------------------------------------------===//
4574 /// ParseRet - Parse a return instruction.
4575 /// ::= 'ret' void (',' !dbg, !1)*
4576 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
4577 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
4578 PerFunctionState &PFS) {
4579 SMLoc TypeLoc = Lex.getLoc();
4581 if (ParseType(Ty, true /*void allowed*/)) return true;
4583 Type *ResType = PFS.getFunction().getReturnType();
4585 if (Ty->isVoidTy()) {
4586 if (!ResType->isVoidTy())
4587 return Error(TypeLoc, "value doesn't match function result type '" +
4588 getTypeString(ResType) + "'");
4590 Inst = ReturnInst::Create(Context);
4595 if (ParseValue(Ty, RV, PFS)) return true;
4597 if (ResType != RV->getType())
4598 return Error(TypeLoc, "value doesn't match function result type '" +
4599 getTypeString(ResType) + "'");
4601 Inst = ReturnInst::Create(Context, RV);
4607 /// ::= 'br' TypeAndValue
4608 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
4609 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
4612 BasicBlock *Op1, *Op2;
4613 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
4615 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
4616 Inst = BranchInst::Create(BB);
4620 if (Op0->getType() != Type::getInt1Ty(Context))
4621 return Error(Loc, "branch condition must have 'i1' type");
4623 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
4624 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
4625 ParseToken(lltok::comma, "expected ',' after true destination") ||
4626 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
4629 Inst = BranchInst::Create(Op1, Op2, Op0);
4635 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
4637 /// ::= (TypeAndValue ',' TypeAndValue)*
4638 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
4639 LocTy CondLoc, BBLoc;
4641 BasicBlock *DefaultBB;
4642 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
4643 ParseToken(lltok::comma, "expected ',' after switch condition") ||
4644 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
4645 ParseToken(lltok::lsquare, "expected '[' with switch table"))
4648 if (!Cond->getType()->isIntegerTy())
4649 return Error(CondLoc, "switch condition must have integer type");
4651 // Parse the jump table pairs.
4652 SmallPtrSet<Value*, 32> SeenCases;
4653 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
4654 while (Lex.getKind() != lltok::rsquare) {
4658 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
4659 ParseToken(lltok::comma, "expected ',' after case value") ||
4660 ParseTypeAndBasicBlock(DestBB, PFS))
4663 if (!SeenCases.insert(Constant).second)
4664 return Error(CondLoc, "duplicate case value in switch");
4665 if (!isa<ConstantInt>(Constant))
4666 return Error(CondLoc, "case value is not a constant integer");
4668 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
4671 Lex.Lex(); // Eat the ']'.
4673 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
4674 for (unsigned i = 0, e = Table.size(); i != e; ++i)
4675 SI->addCase(Table[i].first, Table[i].second);
4682 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
4683 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
4686 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
4687 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
4688 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
4691 if (!Address->getType()->isPointerTy())
4692 return Error(AddrLoc, "indirectbr address must have pointer type");
4694 // Parse the destination list.
4695 SmallVector<BasicBlock*, 16> DestList;
4697 if (Lex.getKind() != lltok::rsquare) {
4699 if (ParseTypeAndBasicBlock(DestBB, PFS))
4701 DestList.push_back(DestBB);
4703 while (EatIfPresent(lltok::comma)) {
4704 if (ParseTypeAndBasicBlock(DestBB, PFS))
4706 DestList.push_back(DestBB);
4710 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
4713 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
4714 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
4715 IBI->addDestination(DestList[i]);
4722 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
4723 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
4724 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
4725 LocTy CallLoc = Lex.getLoc();
4726 AttrBuilder RetAttrs, FnAttrs;
4727 std::vector<unsigned> FwdRefAttrGrps;
4730 Type *RetType = nullptr;
4733 SmallVector<ParamInfo, 16> ArgList;
4735 BasicBlock *NormalBB, *UnwindBB;
4736 if (ParseOptionalCallingConv(CC) ||
4737 ParseOptionalReturnAttrs(RetAttrs) ||
4738 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
4739 ParseValID(CalleeID) ||
4740 ParseParameterList(ArgList, PFS) ||
4741 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
4743 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
4744 ParseTypeAndBasicBlock(NormalBB, PFS) ||
4745 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
4746 ParseTypeAndBasicBlock(UnwindBB, PFS))
4749 // If RetType is a non-function pointer type, then this is the short syntax
4750 // for the call, which means that RetType is just the return type. Infer the
4751 // rest of the function argument types from the arguments that are present.
4752 FunctionType *Ty = dyn_cast<FunctionType>(RetType);
4754 // Pull out the types of all of the arguments...
4755 std::vector<Type*> ParamTypes;
4756 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
4757 ParamTypes.push_back(ArgList[i].V->getType());
4759 if (!FunctionType::isValidReturnType(RetType))
4760 return Error(RetTypeLoc, "Invalid result type for LLVM function");
4762 Ty = FunctionType::get(RetType, ParamTypes, false);
4765 // Look up the callee.
4767 if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS))
4770 // Set up the Attribute for the function.
4771 SmallVector<AttributeSet, 8> Attrs;
4772 if (RetAttrs.hasAttributes())
4773 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4774 AttributeSet::ReturnIndex,
4777 SmallVector<Value*, 8> Args;
4779 // Loop through FunctionType's arguments and ensure they are specified
4780 // correctly. Also, gather any parameter attributes.
4781 FunctionType::param_iterator I = Ty->param_begin();
4782 FunctionType::param_iterator E = Ty->param_end();
4783 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
4784 Type *ExpectedTy = nullptr;
4787 } else if (!Ty->isVarArg()) {
4788 return Error(ArgList[i].Loc, "too many arguments specified");
4791 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
4792 return Error(ArgList[i].Loc, "argument is not of expected type '" +
4793 getTypeString(ExpectedTy) + "'");
4794 Args.push_back(ArgList[i].V);
4795 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
4796 AttrBuilder B(ArgList[i].Attrs, i + 1);
4797 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
4802 return Error(CallLoc, "not enough parameters specified for call");
4804 if (FnAttrs.hasAttributes()) {
4805 if (FnAttrs.hasAlignmentAttr())
4806 return Error(CallLoc, "invoke instructions may not have an alignment");
4808 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4809 AttributeSet::FunctionIndex,
4813 // Finish off the Attribute and check them
4814 AttributeSet PAL = AttributeSet::get(Context, Attrs);
4816 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB, Args);
4817 II->setCallingConv(CC);
4818 II->setAttributes(PAL);
4819 ForwardRefAttrGroups[II] = FwdRefAttrGrps;
4825 /// ::= 'resume' TypeAndValue
4826 bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
4827 Value *Exn; LocTy ExnLoc;
4828 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
4831 ResumeInst *RI = ResumeInst::Create(Exn);
4836 //===----------------------------------------------------------------------===//
4837 // Binary Operators.
4838 //===----------------------------------------------------------------------===//
4841 /// ::= ArithmeticOps TypeAndValue ',' Value
4843 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
4844 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
4845 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
4846 unsigned Opc, unsigned OperandType) {
4847 LocTy Loc; Value *LHS, *RHS;
4848 if (ParseTypeAndValue(LHS, Loc, PFS) ||
4849 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
4850 ParseValue(LHS->getType(), RHS, PFS))
4854 switch (OperandType) {
4855 default: llvm_unreachable("Unknown operand type!");
4856 case 0: // int or FP.
4857 Valid = LHS->getType()->isIntOrIntVectorTy() ||
4858 LHS->getType()->isFPOrFPVectorTy();
4860 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
4861 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
4865 return Error(Loc, "invalid operand type for instruction");
4867 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
4872 /// ::= ArithmeticOps TypeAndValue ',' Value {
4873 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
4875 LocTy Loc; Value *LHS, *RHS;
4876 if (ParseTypeAndValue(LHS, Loc, PFS) ||
4877 ParseToken(lltok::comma, "expected ',' in logical operation") ||
4878 ParseValue(LHS->getType(), RHS, PFS))
4881 if (!LHS->getType()->isIntOrIntVectorTy())
4882 return Error(Loc,"instruction requires integer or integer vector operands");
4884 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
4890 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
4891 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
4892 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
4894 // Parse the integer/fp comparison predicate.
4898 if (ParseCmpPredicate(Pred, Opc) ||
4899 ParseTypeAndValue(LHS, Loc, PFS) ||
4900 ParseToken(lltok::comma, "expected ',' after compare value") ||
4901 ParseValue(LHS->getType(), RHS, PFS))
4904 if (Opc == Instruction::FCmp) {
4905 if (!LHS->getType()->isFPOrFPVectorTy())
4906 return Error(Loc, "fcmp requires floating point operands");
4907 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
4909 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
4910 if (!LHS->getType()->isIntOrIntVectorTy() &&
4911 !LHS->getType()->getScalarType()->isPointerTy())
4912 return Error(Loc, "icmp requires integer operands");
4913 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
4918 //===----------------------------------------------------------------------===//
4919 // Other Instructions.
4920 //===----------------------------------------------------------------------===//
4924 /// ::= CastOpc TypeAndValue 'to' Type
4925 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
4929 Type *DestTy = nullptr;
4930 if (ParseTypeAndValue(Op, Loc, PFS) ||
4931 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
4935 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
4936 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
4937 return Error(Loc, "invalid cast opcode for cast from '" +
4938 getTypeString(Op->getType()) + "' to '" +
4939 getTypeString(DestTy) + "'");
4941 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
4946 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
4947 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
4949 Value *Op0, *Op1, *Op2;
4950 if (ParseTypeAndValue(Op0, Loc, PFS) ||
4951 ParseToken(lltok::comma, "expected ',' after select condition") ||
4952 ParseTypeAndValue(Op1, PFS) ||
4953 ParseToken(lltok::comma, "expected ',' after select value") ||
4954 ParseTypeAndValue(Op2, PFS))
4957 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
4958 return Error(Loc, Reason);
4960 Inst = SelectInst::Create(Op0, Op1, Op2);
4965 /// ::= 'va_arg' TypeAndValue ',' Type
4966 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
4968 Type *EltTy = nullptr;
4970 if (ParseTypeAndValue(Op, PFS) ||
4971 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
4972 ParseType(EltTy, TypeLoc))
4975 if (!EltTy->isFirstClassType())
4976 return Error(TypeLoc, "va_arg requires operand with first class type");
4978 Inst = new VAArgInst(Op, EltTy);
4982 /// ParseExtractElement
4983 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
4984 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
4987 if (ParseTypeAndValue(Op0, Loc, PFS) ||
4988 ParseToken(lltok::comma, "expected ',' after extract value") ||
4989 ParseTypeAndValue(Op1, PFS))
4992 if (!ExtractElementInst::isValidOperands(Op0, Op1))
4993 return Error(Loc, "invalid extractelement operands");
4995 Inst = ExtractElementInst::Create(Op0, Op1);
4999 /// ParseInsertElement
5000 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5001 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
5003 Value *Op0, *Op1, *Op2;
5004 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5005 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5006 ParseTypeAndValue(Op1, PFS) ||
5007 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5008 ParseTypeAndValue(Op2, PFS))
5011 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
5012 return Error(Loc, "invalid insertelement operands");
5014 Inst = InsertElementInst::Create(Op0, Op1, Op2);
5018 /// ParseShuffleVector
5019 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5020 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
5022 Value *Op0, *Op1, *Op2;
5023 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5024 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
5025 ParseTypeAndValue(Op1, PFS) ||
5026 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
5027 ParseTypeAndValue(Op2, PFS))
5030 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
5031 return Error(Loc, "invalid shufflevector operands");
5033 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
5038 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
5039 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
5040 Type *Ty = nullptr; LocTy TypeLoc;
5043 if (ParseType(Ty, TypeLoc) ||
5044 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
5045 ParseValue(Ty, Op0, PFS) ||
5046 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5047 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
5048 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
5051 bool AteExtraComma = false;
5052 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
5054 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
5056 if (!EatIfPresent(lltok::comma))
5059 if (Lex.getKind() == lltok::MetadataVar) {
5060 AteExtraComma = true;
5064 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
5065 ParseValue(Ty, Op0, PFS) ||
5066 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5067 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
5068 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
5072 if (!Ty->isFirstClassType())
5073 return Error(TypeLoc, "phi node must have first class type");
5075 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
5076 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
5077 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
5079 return AteExtraComma ? InstExtraComma : InstNormal;
5083 /// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
5085 /// ::= 'catch' TypeAndValue
5087 /// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
5088 bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
5089 Type *Ty = nullptr; LocTy TyLoc;
5090 Value *PersFn; LocTy PersFnLoc;
5092 if (ParseType(Ty, TyLoc) ||
5093 ParseToken(lltok::kw_personality, "expected 'personality'") ||
5094 ParseTypeAndValue(PersFn, PersFnLoc, PFS))
5097 std::unique_ptr<LandingPadInst> LP(LandingPadInst::Create(Ty, PersFn, 0));
5098 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
5100 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
5101 LandingPadInst::ClauseType CT;
5102 if (EatIfPresent(lltok::kw_catch))
5103 CT = LandingPadInst::Catch;
5104 else if (EatIfPresent(lltok::kw_filter))
5105 CT = LandingPadInst::Filter;
5107 return TokError("expected 'catch' or 'filter' clause type");
5111 if (ParseTypeAndValue(V, VLoc, PFS))
5114 // A 'catch' type expects a non-array constant. A filter clause expects an
5116 if (CT == LandingPadInst::Catch) {
5117 if (isa<ArrayType>(V->getType()))
5118 Error(VLoc, "'catch' clause has an invalid type");
5120 if (!isa<ArrayType>(V->getType()))
5121 Error(VLoc, "'filter' clause has an invalid type");
5124 Constant *CV = dyn_cast<Constant>(V);
5126 return Error(VLoc, "clause argument must be a constant");
5130 Inst = LP.release();
5135 /// ::= 'call' OptionalCallingConv OptionalAttrs Type Value
5136 /// ParameterList OptionalAttrs
5137 /// ::= 'tail' 'call' OptionalCallingConv OptionalAttrs Type Value
5138 /// ParameterList OptionalAttrs
5139 /// ::= 'musttail' 'call' OptionalCallingConv OptionalAttrs Type Value
5140 /// ParameterList OptionalAttrs
5141 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
5142 CallInst::TailCallKind TCK) {
5143 AttrBuilder RetAttrs, FnAttrs;
5144 std::vector<unsigned> FwdRefAttrGrps;
5147 Type *RetType = nullptr;
5150 SmallVector<ParamInfo, 16> ArgList;
5151 LocTy CallLoc = Lex.getLoc();
5153 if ((TCK != CallInst::TCK_None &&
5154 ParseToken(lltok::kw_call, "expected 'tail call'")) ||
5155 ParseOptionalCallingConv(CC) ||
5156 ParseOptionalReturnAttrs(RetAttrs) ||
5157 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
5158 ParseValID(CalleeID) ||
5159 ParseParameterList(ArgList, PFS, TCK == CallInst::TCK_MustTail,
5160 PFS.getFunction().isVarArg()) ||
5161 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
5165 // If RetType is a non-function pointer type, then this is the short syntax
5166 // for the call, which means that RetType is just the return type. Infer the
5167 // rest of the function argument types from the arguments that are present.
5168 FunctionType *Ty = dyn_cast<FunctionType>(RetType);
5170 // Pull out the types of all of the arguments...
5171 std::vector<Type*> ParamTypes;
5172 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
5173 ParamTypes.push_back(ArgList[i].V->getType());
5175 if (!FunctionType::isValidReturnType(RetType))
5176 return Error(RetTypeLoc, "Invalid result type for LLVM function");
5178 Ty = FunctionType::get(RetType, ParamTypes, false);
5181 // Look up the callee.
5183 if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS))
5186 // Set up the Attribute for the function.
5187 SmallVector<AttributeSet, 8> Attrs;
5188 if (RetAttrs.hasAttributes())
5189 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5190 AttributeSet::ReturnIndex,
5193 SmallVector<Value*, 8> Args;
5195 // Loop through FunctionType's arguments and ensure they are specified
5196 // correctly. Also, gather any parameter attributes.
5197 FunctionType::param_iterator I = Ty->param_begin();
5198 FunctionType::param_iterator E = Ty->param_end();
5199 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
5200 Type *ExpectedTy = nullptr;
5203 } else if (!Ty->isVarArg()) {
5204 return Error(ArgList[i].Loc, "too many arguments specified");
5207 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
5208 return Error(ArgList[i].Loc, "argument is not of expected type '" +
5209 getTypeString(ExpectedTy) + "'");
5210 Args.push_back(ArgList[i].V);
5211 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
5212 AttrBuilder B(ArgList[i].Attrs, i + 1);
5213 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
5218 return Error(CallLoc, "not enough parameters specified for call");
5220 if (FnAttrs.hasAttributes()) {
5221 if (FnAttrs.hasAlignmentAttr())
5222 return Error(CallLoc, "call instructions may not have an alignment");
5224 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5225 AttributeSet::FunctionIndex,
5229 // Finish off the Attribute and check them
5230 AttributeSet PAL = AttributeSet::get(Context, Attrs);
5232 CallInst *CI = CallInst::Create(Ty, Callee, Args);
5233 CI->setTailCallKind(TCK);
5234 CI->setCallingConv(CC);
5235 CI->setAttributes(PAL);
5236 ForwardRefAttrGroups[CI] = FwdRefAttrGrps;
5241 //===----------------------------------------------------------------------===//
5242 // Memory Instructions.
5243 //===----------------------------------------------------------------------===//
5246 /// ::= 'alloca' 'inalloca'? Type (',' TypeAndValue)? (',' 'align' i32)?
5247 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
5248 Value *Size = nullptr;
5249 LocTy SizeLoc, TyLoc;
5250 unsigned Alignment = 0;
5253 bool IsInAlloca = EatIfPresent(lltok::kw_inalloca);
5255 if (ParseType(Ty, TyLoc)) return true;
5257 if (Ty->isFunctionTy() || !PointerType::isValidElementType(Ty))
5258 return Error(TyLoc, "invalid type for alloca");
5260 bool AteExtraComma = false;
5261 if (EatIfPresent(lltok::comma)) {
5262 if (Lex.getKind() == lltok::kw_align) {
5263 if (ParseOptionalAlignment(Alignment)) return true;
5264 } else if (Lex.getKind() == lltok::MetadataVar) {
5265 AteExtraComma = true;
5267 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
5268 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5273 if (Size && !Size->getType()->isIntegerTy())
5274 return Error(SizeLoc, "element count must have integer type");
5276 AllocaInst *AI = new AllocaInst(Ty, Size, Alignment);
5277 AI->setUsedWithInAlloca(IsInAlloca);
5279 return AteExtraComma ? InstExtraComma : InstNormal;
5283 /// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
5284 /// ::= 'load' 'atomic' 'volatile'? TypeAndValue
5285 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
5286 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
5287 Value *Val; LocTy Loc;
5288 unsigned Alignment = 0;
5289 bool AteExtraComma = false;
5290 bool isAtomic = false;
5291 AtomicOrdering Ordering = NotAtomic;
5292 SynchronizationScope Scope = CrossThread;
5294 if (Lex.getKind() == lltok::kw_atomic) {
5299 bool isVolatile = false;
5300 if (Lex.getKind() == lltok::kw_volatile) {
5306 LocTy ExplicitTypeLoc = Lex.getLoc();
5307 if (ParseType(Ty) ||
5308 ParseToken(lltok::comma, "expected comma after load's type") ||
5309 ParseTypeAndValue(Val, Loc, PFS) ||
5310 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
5311 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5314 if (!Val->getType()->isPointerTy() || !Ty->isFirstClassType())
5315 return Error(Loc, "load operand must be a pointer to a first class type");
5316 if (isAtomic && !Alignment)
5317 return Error(Loc, "atomic load must have explicit non-zero alignment");
5318 if (Ordering == Release || Ordering == AcquireRelease)
5319 return Error(Loc, "atomic load cannot use Release ordering");
5321 if (Ty != cast<PointerType>(Val->getType())->getElementType())
5322 return Error(ExplicitTypeLoc,
5323 "explicit pointee type doesn't match operand's pointee type");
5325 Inst = new LoadInst(Ty, Val, "", isVolatile, Alignment, Ordering, Scope);
5326 return AteExtraComma ? InstExtraComma : InstNormal;
5331 /// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
5332 /// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
5333 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
5334 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
5335 Value *Val, *Ptr; LocTy Loc, PtrLoc;
5336 unsigned Alignment = 0;
5337 bool AteExtraComma = false;
5338 bool isAtomic = false;
5339 AtomicOrdering Ordering = NotAtomic;
5340 SynchronizationScope Scope = CrossThread;
5342 if (Lex.getKind() == lltok::kw_atomic) {
5347 bool isVolatile = false;
5348 if (Lex.getKind() == lltok::kw_volatile) {
5353 if (ParseTypeAndValue(Val, Loc, PFS) ||
5354 ParseToken(lltok::comma, "expected ',' after store operand") ||
5355 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5356 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
5357 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5360 if (!Ptr->getType()->isPointerTy())
5361 return Error(PtrLoc, "store operand must be a pointer");
5362 if (!Val->getType()->isFirstClassType())
5363 return Error(Loc, "store operand must be a first class value");
5364 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
5365 return Error(Loc, "stored value and pointer type do not match");
5366 if (isAtomic && !Alignment)
5367 return Error(Loc, "atomic store must have explicit non-zero alignment");
5368 if (Ordering == Acquire || Ordering == AcquireRelease)
5369 return Error(Loc, "atomic store cannot use Acquire ordering");
5371 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, Scope);
5372 return AteExtraComma ? InstExtraComma : InstNormal;
5376 /// ::= 'cmpxchg' 'weak'? 'volatile'? TypeAndValue ',' TypeAndValue ','
5377 /// TypeAndValue 'singlethread'? AtomicOrdering AtomicOrdering
5378 int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
5379 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
5380 bool AteExtraComma = false;
5381 AtomicOrdering SuccessOrdering = NotAtomic;
5382 AtomicOrdering FailureOrdering = NotAtomic;
5383 SynchronizationScope Scope = CrossThread;
5384 bool isVolatile = false;
5385 bool isWeak = false;
5387 if (EatIfPresent(lltok::kw_weak))
5390 if (EatIfPresent(lltok::kw_volatile))
5393 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5394 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
5395 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
5396 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
5397 ParseTypeAndValue(New, NewLoc, PFS) ||
5398 ParseScopeAndOrdering(true /*Always atomic*/, Scope, SuccessOrdering) ||
5399 ParseOrdering(FailureOrdering))
5402 if (SuccessOrdering == Unordered || FailureOrdering == Unordered)
5403 return TokError("cmpxchg cannot be unordered");
5404 if (SuccessOrdering < FailureOrdering)
5405 return TokError("cmpxchg must be at least as ordered on success as failure");
5406 if (FailureOrdering == Release || FailureOrdering == AcquireRelease)
5407 return TokError("cmpxchg failure ordering cannot include release semantics");
5408 if (!Ptr->getType()->isPointerTy())
5409 return Error(PtrLoc, "cmpxchg operand must be a pointer");
5410 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
5411 return Error(CmpLoc, "compare value and pointer type do not match");
5412 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
5413 return Error(NewLoc, "new value and pointer type do not match");
5414 if (!New->getType()->isIntegerTy())
5415 return Error(NewLoc, "cmpxchg operand must be an integer");
5416 unsigned Size = New->getType()->getPrimitiveSizeInBits();
5417 if (Size < 8 || (Size & (Size - 1)))
5418 return Error(NewLoc, "cmpxchg operand must be power-of-two byte-sized"
5421 AtomicCmpXchgInst *CXI = new AtomicCmpXchgInst(
5422 Ptr, Cmp, New, SuccessOrdering, FailureOrdering, Scope);
5423 CXI->setVolatile(isVolatile);
5424 CXI->setWeak(isWeak);
5426 return AteExtraComma ? InstExtraComma : InstNormal;
5430 /// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
5431 /// 'singlethread'? AtomicOrdering
5432 int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
5433 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
5434 bool AteExtraComma = false;
5435 AtomicOrdering Ordering = NotAtomic;
5436 SynchronizationScope Scope = CrossThread;
5437 bool isVolatile = false;
5438 AtomicRMWInst::BinOp Operation;
5440 if (EatIfPresent(lltok::kw_volatile))
5443 switch (Lex.getKind()) {
5444 default: return TokError("expected binary operation in atomicrmw");
5445 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
5446 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
5447 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
5448 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
5449 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
5450 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
5451 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
5452 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
5453 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
5454 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
5455 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
5457 Lex.Lex(); // Eat the operation.
5459 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5460 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
5461 ParseTypeAndValue(Val, ValLoc, PFS) ||
5462 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
5465 if (Ordering == Unordered)
5466 return TokError("atomicrmw cannot be unordered");
5467 if (!Ptr->getType()->isPointerTy())
5468 return Error(PtrLoc, "atomicrmw operand must be a pointer");
5469 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
5470 return Error(ValLoc, "atomicrmw value and pointer type do not match");
5471 if (!Val->getType()->isIntegerTy())
5472 return Error(ValLoc, "atomicrmw operand must be an integer");
5473 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
5474 if (Size < 8 || (Size & (Size - 1)))
5475 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
5478 AtomicRMWInst *RMWI =
5479 new AtomicRMWInst(Operation, Ptr, Val, Ordering, Scope);
5480 RMWI->setVolatile(isVolatile);
5482 return AteExtraComma ? InstExtraComma : InstNormal;
5486 /// ::= 'fence' 'singlethread'? AtomicOrdering
5487 int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
5488 AtomicOrdering Ordering = NotAtomic;
5489 SynchronizationScope Scope = CrossThread;
5490 if (ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
5493 if (Ordering == Unordered)
5494 return TokError("fence cannot be unordered");
5495 if (Ordering == Monotonic)
5496 return TokError("fence cannot be monotonic");
5498 Inst = new FenceInst(Context, Ordering, Scope);
5502 /// ParseGetElementPtr
5503 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
5504 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
5505 Value *Ptr = nullptr;
5506 Value *Val = nullptr;
5509 bool InBounds = EatIfPresent(lltok::kw_inbounds);
5512 LocTy ExplicitTypeLoc = Lex.getLoc();
5513 if (ParseType(Ty) ||
5514 ParseToken(lltok::comma, "expected comma after getelementptr's type") ||
5515 ParseTypeAndValue(Ptr, Loc, PFS))
5518 Type *BaseType = Ptr->getType();
5519 PointerType *BasePointerType = dyn_cast<PointerType>(BaseType->getScalarType());
5520 if (!BasePointerType)
5521 return Error(Loc, "base of getelementptr must be a pointer");
5523 if (Ty != BasePointerType->getElementType())
5524 return Error(ExplicitTypeLoc,
5525 "explicit pointee type doesn't match operand's pointee type");
5527 SmallVector<Value*, 16> Indices;
5528 bool AteExtraComma = false;
5529 while (EatIfPresent(lltok::comma)) {
5530 if (Lex.getKind() == lltok::MetadataVar) {
5531 AteExtraComma = true;
5534 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
5535 if (!Val->getType()->getScalarType()->isIntegerTy())
5536 return Error(EltLoc, "getelementptr index must be an integer");
5537 if (Val->getType()->isVectorTy() != Ptr->getType()->isVectorTy())
5538 return Error(EltLoc, "getelementptr index type missmatch");
5539 if (Val->getType()->isVectorTy()) {
5540 unsigned ValNumEl = cast<VectorType>(Val->getType())->getNumElements();
5541 unsigned PtrNumEl = cast<VectorType>(Ptr->getType())->getNumElements();
5542 if (ValNumEl != PtrNumEl)
5543 return Error(EltLoc,
5544 "getelementptr vector index has a wrong number of elements");
5546 Indices.push_back(Val);
5549 SmallPtrSet<const Type*, 4> Visited;
5550 if (!Indices.empty() && !Ty->isSized(&Visited))
5551 return Error(Loc, "base element of getelementptr must be sized");
5553 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
5554 return Error(Loc, "invalid getelementptr indices");
5555 Inst = GetElementPtrInst::Create(Ty, Ptr, Indices);
5557 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
5558 return AteExtraComma ? InstExtraComma : InstNormal;
5561 /// ParseExtractValue
5562 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
5563 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
5564 Value *Val; LocTy Loc;
5565 SmallVector<unsigned, 4> Indices;
5567 if (ParseTypeAndValue(Val, Loc, PFS) ||
5568 ParseIndexList(Indices, AteExtraComma))
5571 if (!Val->getType()->isAggregateType())
5572 return Error(Loc, "extractvalue operand must be aggregate type");
5574 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
5575 return Error(Loc, "invalid indices for extractvalue");
5576 Inst = ExtractValueInst::Create(Val, Indices);
5577 return AteExtraComma ? InstExtraComma : InstNormal;
5580 /// ParseInsertValue
5581 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
5582 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
5583 Value *Val0, *Val1; LocTy Loc0, Loc1;
5584 SmallVector<unsigned, 4> Indices;
5586 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
5587 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
5588 ParseTypeAndValue(Val1, Loc1, PFS) ||
5589 ParseIndexList(Indices, AteExtraComma))
5592 if (!Val0->getType()->isAggregateType())
5593 return Error(Loc0, "insertvalue operand must be aggregate type");
5595 Type *IndexedType = ExtractValueInst::getIndexedType(Val0->getType(), Indices);
5597 return Error(Loc0, "invalid indices for insertvalue");
5598 if (IndexedType != Val1->getType())
5599 return Error(Loc1, "insertvalue operand and field disagree in type: '" +
5600 getTypeString(Val1->getType()) + "' instead of '" +
5601 getTypeString(IndexedType) + "'");
5602 Inst = InsertValueInst::Create(Val0, Val1, Indices);
5603 return AteExtraComma ? InstExtraComma : InstNormal;
5606 //===----------------------------------------------------------------------===//
5607 // Embedded metadata.
5608 //===----------------------------------------------------------------------===//
5610 /// ParseMDNodeVector
5611 /// ::= { Element (',' Element)* }
5613 /// ::= 'null' | TypeAndValue
5614 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Metadata *> &Elts) {
5615 if (ParseToken(lltok::lbrace, "expected '{' here"))
5618 // Check for an empty list.
5619 if (EatIfPresent(lltok::rbrace))
5623 // Null is a special case since it is typeless.
5624 if (EatIfPresent(lltok::kw_null)) {
5625 Elts.push_back(nullptr);
5630 if (ParseMetadata(MD, nullptr))
5633 } while (EatIfPresent(lltok::comma));
5635 return ParseToken(lltok::rbrace, "expected end of metadata node");
5638 //===----------------------------------------------------------------------===//
5639 // Use-list order directives.
5640 //===----------------------------------------------------------------------===//
5641 bool LLParser::sortUseListOrder(Value *V, ArrayRef<unsigned> Indexes,
5644 return Error(Loc, "value has no uses");
5646 unsigned NumUses = 0;
5647 SmallDenseMap<const Use *, unsigned, 16> Order;
5648 for (const Use &U : V->uses()) {
5649 if (++NumUses > Indexes.size())
5651 Order[&U] = Indexes[NumUses - 1];
5654 return Error(Loc, "value only has one use");
5655 if (Order.size() != Indexes.size() || NumUses > Indexes.size())
5656 return Error(Loc, "wrong number of indexes, expected " +
5657 Twine(std::distance(V->use_begin(), V->use_end())));
5659 V->sortUseList([&](const Use &L, const Use &R) {
5660 return Order.lookup(&L) < Order.lookup(&R);
5665 /// ParseUseListOrderIndexes
5666 /// ::= '{' uint32 (',' uint32)+ '}'
5667 bool LLParser::ParseUseListOrderIndexes(SmallVectorImpl<unsigned> &Indexes) {
5668 SMLoc Loc = Lex.getLoc();
5669 if (ParseToken(lltok::lbrace, "expected '{' here"))
5671 if (Lex.getKind() == lltok::rbrace)
5672 return Lex.Error("expected non-empty list of uselistorder indexes");
5674 // Use Offset, Max, and IsOrdered to check consistency of indexes. The
5675 // indexes should be distinct numbers in the range [0, size-1], and should
5677 unsigned Offset = 0;
5679 bool IsOrdered = true;
5680 assert(Indexes.empty() && "Expected empty order vector");
5683 if (ParseUInt32(Index))
5686 // Update consistency checks.
5687 Offset += Index - Indexes.size();
5688 Max = std::max(Max, Index);
5689 IsOrdered &= Index == Indexes.size();
5691 Indexes.push_back(Index);
5692 } while (EatIfPresent(lltok::comma));
5694 if (ParseToken(lltok::rbrace, "expected '}' here"))
5697 if (Indexes.size() < 2)
5698 return Error(Loc, "expected >= 2 uselistorder indexes");
5699 if (Offset != 0 || Max >= Indexes.size())
5700 return Error(Loc, "expected distinct uselistorder indexes in range [0, size)");
5702 return Error(Loc, "expected uselistorder indexes to change the order");
5707 /// ParseUseListOrder
5708 /// ::= 'uselistorder' Type Value ',' UseListOrderIndexes
5709 bool LLParser::ParseUseListOrder(PerFunctionState *PFS) {
5710 SMLoc Loc = Lex.getLoc();
5711 if (ParseToken(lltok::kw_uselistorder, "expected uselistorder directive"))
5715 SmallVector<unsigned, 16> Indexes;
5716 if (ParseTypeAndValue(V, PFS) ||
5717 ParseToken(lltok::comma, "expected comma in uselistorder directive") ||
5718 ParseUseListOrderIndexes(Indexes))
5721 return sortUseListOrder(V, Indexes, Loc);
5724 /// ParseUseListOrderBB
5725 /// ::= 'uselistorder_bb' @foo ',' %bar ',' UseListOrderIndexes
5726 bool LLParser::ParseUseListOrderBB() {
5727 assert(Lex.getKind() == lltok::kw_uselistorder_bb);
5728 SMLoc Loc = Lex.getLoc();
5732 SmallVector<unsigned, 16> Indexes;
5733 if (ParseValID(Fn) ||
5734 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
5735 ParseValID(Label) ||
5736 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
5737 ParseUseListOrderIndexes(Indexes))
5740 // Check the function.
5742 if (Fn.Kind == ValID::t_GlobalName)
5743 GV = M->getNamedValue(Fn.StrVal);
5744 else if (Fn.Kind == ValID::t_GlobalID)
5745 GV = Fn.UIntVal < NumberedVals.size() ? NumberedVals[Fn.UIntVal] : nullptr;
5747 return Error(Fn.Loc, "expected function name in uselistorder_bb");
5749 return Error(Fn.Loc, "invalid function forward reference in uselistorder_bb");
5750 auto *F = dyn_cast<Function>(GV);
5752 return Error(Fn.Loc, "expected function name in uselistorder_bb");
5753 if (F->isDeclaration())
5754 return Error(Fn.Loc, "invalid declaration in uselistorder_bb");
5756 // Check the basic block.
5757 if (Label.Kind == ValID::t_LocalID)
5758 return Error(Label.Loc, "invalid numeric label in uselistorder_bb");
5759 if (Label.Kind != ValID::t_LocalName)
5760 return Error(Label.Loc, "expected basic block name in uselistorder_bb");
5761 Value *V = F->getValueSymbolTable().lookup(Label.StrVal);
5763 return Error(Label.Loc, "invalid basic block in uselistorder_bb");
5764 if (!isa<BasicBlock>(V))
5765 return Error(Label.Loc, "expected basic block in uselistorder_bb");
5767 return sortUseListOrder(V, Indexes, Loc);