1 //===-- LLParser.cpp - Parser Class ---------------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines the parser class for .ll files.
12 //===----------------------------------------------------------------------===//
15 #include "llvm/ADT/SmallPtrSet.h"
16 #include "llvm/IR/AutoUpgrade.h"
17 #include "llvm/IR/CallingConv.h"
18 #include "llvm/IR/Constants.h"
19 #include "llvm/IR/DebugInfo.h"
20 #include "llvm/IR/DebugInfoMetadata.h"
21 #include "llvm/IR/DerivedTypes.h"
22 #include "llvm/IR/InlineAsm.h"
23 #include "llvm/IR/Instructions.h"
24 #include "llvm/IR/LLVMContext.h"
25 #include "llvm/IR/Module.h"
26 #include "llvm/IR/Operator.h"
27 #include "llvm/IR/ValueSymbolTable.h"
28 #include "llvm/Support/Dwarf.h"
29 #include "llvm/Support/ErrorHandling.h"
30 #include "llvm/Support/SaveAndRestore.h"
31 #include "llvm/Support/raw_ostream.h"
34 static std::string getTypeString(Type *T) {
36 raw_string_ostream Tmp(Result);
41 /// Run: module ::= toplevelentity*
42 bool LLParser::Run() {
46 return ParseTopLevelEntities() ||
47 ValidateEndOfModule();
50 /// ValidateEndOfModule - Do final validity and sanity checks at the end of the
52 bool LLParser::ValidateEndOfModule() {
53 for (unsigned I = 0, E = InstsWithTBAATag.size(); I < E; I++)
54 UpgradeInstWithTBAATag(InstsWithTBAATag[I]);
56 // Handle any function attribute group forward references.
57 for (std::map<Value*, std::vector<unsigned> >::iterator
58 I = ForwardRefAttrGroups.begin(), E = ForwardRefAttrGroups.end();
61 std::vector<unsigned> &Vec = I->second;
64 for (std::vector<unsigned>::iterator VI = Vec.begin(), VE = Vec.end();
66 B.merge(NumberedAttrBuilders[*VI]);
68 if (Function *Fn = dyn_cast<Function>(V)) {
69 AttributeSet AS = Fn->getAttributes();
70 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
71 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
72 AS.getFnAttributes());
76 // If the alignment was parsed as an attribute, move to the alignment
78 if (FnAttrs.hasAlignmentAttr()) {
79 Fn->setAlignment(FnAttrs.getAlignment());
80 FnAttrs.removeAttribute(Attribute::Alignment);
83 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
84 AttributeSet::get(Context,
85 AttributeSet::FunctionIndex,
87 Fn->setAttributes(AS);
88 } else if (CallInst *CI = dyn_cast<CallInst>(V)) {
89 AttributeSet AS = CI->getAttributes();
90 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
91 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
92 AS.getFnAttributes());
94 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
95 AttributeSet::get(Context,
96 AttributeSet::FunctionIndex,
98 CI->setAttributes(AS);
99 } else if (InvokeInst *II = dyn_cast<InvokeInst>(V)) {
100 AttributeSet AS = II->getAttributes();
101 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
102 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
103 AS.getFnAttributes());
105 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
106 AttributeSet::get(Context,
107 AttributeSet::FunctionIndex,
109 II->setAttributes(AS);
111 llvm_unreachable("invalid object with forward attribute group reference");
115 // If there are entries in ForwardRefBlockAddresses at this point, the
116 // function was never defined.
117 if (!ForwardRefBlockAddresses.empty())
118 return Error(ForwardRefBlockAddresses.begin()->first.Loc,
119 "expected function name in blockaddress");
121 for (const auto &NT : NumberedTypes)
122 if (NT.second.second.isValid())
123 return Error(NT.second.second,
124 "use of undefined type '%" + Twine(NT.first) + "'");
126 for (StringMap<std::pair<Type*, LocTy> >::iterator I =
127 NamedTypes.begin(), E = NamedTypes.end(); I != E; ++I)
128 if (I->second.second.isValid())
129 return Error(I->second.second,
130 "use of undefined type named '" + I->getKey() + "'");
132 if (!ForwardRefComdats.empty())
133 return Error(ForwardRefComdats.begin()->second,
134 "use of undefined comdat '$" +
135 ForwardRefComdats.begin()->first + "'");
137 if (!ForwardRefVals.empty())
138 return Error(ForwardRefVals.begin()->second.second,
139 "use of undefined value '@" + ForwardRefVals.begin()->first +
142 if (!ForwardRefValIDs.empty())
143 return Error(ForwardRefValIDs.begin()->second.second,
144 "use of undefined value '@" +
145 Twine(ForwardRefValIDs.begin()->first) + "'");
147 if (!ForwardRefMDNodes.empty())
148 return Error(ForwardRefMDNodes.begin()->second.second,
149 "use of undefined metadata '!" +
150 Twine(ForwardRefMDNodes.begin()->first) + "'");
152 // Resolve metadata cycles.
153 for (auto &N : NumberedMetadata) {
154 if (N.second && !N.second->isResolved())
155 N.second->resolveCycles();
158 // Look for intrinsic functions and CallInst that need to be upgraded
159 for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; )
160 UpgradeCallsToIntrinsic(FI++); // must be post-increment, as we remove
162 UpgradeDebugInfo(*M);
167 //===----------------------------------------------------------------------===//
168 // Top-Level Entities
169 //===----------------------------------------------------------------------===//
171 bool LLParser::ParseTopLevelEntities() {
173 switch (Lex.getKind()) {
174 default: return TokError("expected top-level entity");
175 case lltok::Eof: return false;
176 case lltok::kw_declare: if (ParseDeclare()) return true; break;
177 case lltok::kw_define: if (ParseDefine()) return true; break;
178 case lltok::kw_module: if (ParseModuleAsm()) return true; break;
179 case lltok::kw_target: if (ParseTargetDefinition()) return true; break;
180 case lltok::kw_deplibs: if (ParseDepLibs()) return true; break;
181 case lltok::LocalVarID: if (ParseUnnamedType()) return true; break;
182 case lltok::LocalVar: if (ParseNamedType()) return true; break;
183 case lltok::GlobalID: if (ParseUnnamedGlobal()) return true; break;
184 case lltok::GlobalVar: if (ParseNamedGlobal()) return true; break;
185 case lltok::ComdatVar: if (parseComdat()) return true; break;
186 case lltok::exclaim: if (ParseStandaloneMetadata()) return true; break;
187 case lltok::MetadataVar:if (ParseNamedMetadata()) return true; break;
189 // The Global variable production with no name can have many different
190 // optional leading prefixes, the production is:
191 // GlobalVar ::= OptionalLinkage OptionalVisibility OptionalDLLStorageClass
192 // OptionalThreadLocal OptionalAddrSpace OptionalUnNammedAddr
193 // ('constant'|'global') ...
194 case lltok::kw_private: // OptionalLinkage
195 case lltok::kw_internal: // OptionalLinkage
196 case lltok::kw_weak: // OptionalLinkage
197 case lltok::kw_weak_odr: // OptionalLinkage
198 case lltok::kw_linkonce: // OptionalLinkage
199 case lltok::kw_linkonce_odr: // OptionalLinkage
200 case lltok::kw_appending: // OptionalLinkage
201 case lltok::kw_common: // OptionalLinkage
202 case lltok::kw_extern_weak: // OptionalLinkage
203 case lltok::kw_external: // OptionalLinkage
204 case lltok::kw_default: // OptionalVisibility
205 case lltok::kw_hidden: // OptionalVisibility
206 case lltok::kw_protected: // OptionalVisibility
207 case lltok::kw_dllimport: // OptionalDLLStorageClass
208 case lltok::kw_dllexport: // OptionalDLLStorageClass
209 case lltok::kw_thread_local: // OptionalThreadLocal
210 case lltok::kw_addrspace: // OptionalAddrSpace
211 case lltok::kw_constant: // GlobalType
212 case lltok::kw_global: { // GlobalType
213 unsigned Linkage, Visibility, DLLStorageClass;
215 GlobalVariable::ThreadLocalMode TLM;
217 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
218 ParseOptionalVisibility(Visibility) ||
219 ParseOptionalDLLStorageClass(DLLStorageClass) ||
220 ParseOptionalThreadLocal(TLM) ||
221 parseOptionalUnnamedAddr(UnnamedAddr) ||
222 ParseGlobal("", SMLoc(), Linkage, HasLinkage, Visibility,
223 DLLStorageClass, TLM, UnnamedAddr))
228 case lltok::kw_attributes: if (ParseUnnamedAttrGrp()) return true; break;
229 case lltok::kw_uselistorder: if (ParseUseListOrder()) return true; break;
230 case lltok::kw_uselistorder_bb:
231 if (ParseUseListOrderBB()) return true; break;
238 /// ::= 'module' 'asm' STRINGCONSTANT
239 bool LLParser::ParseModuleAsm() {
240 assert(Lex.getKind() == lltok::kw_module);
244 if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
245 ParseStringConstant(AsmStr)) return true;
247 M->appendModuleInlineAsm(AsmStr);
252 /// ::= 'target' 'triple' '=' STRINGCONSTANT
253 /// ::= 'target' 'datalayout' '=' STRINGCONSTANT
254 bool LLParser::ParseTargetDefinition() {
255 assert(Lex.getKind() == lltok::kw_target);
258 default: return TokError("unknown target property");
259 case lltok::kw_triple:
261 if (ParseToken(lltok::equal, "expected '=' after target triple") ||
262 ParseStringConstant(Str))
264 M->setTargetTriple(Str);
266 case lltok::kw_datalayout:
268 if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
269 ParseStringConstant(Str))
271 M->setDataLayout(Str);
277 /// ::= 'deplibs' '=' '[' ']'
278 /// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
279 /// FIXME: Remove in 4.0. Currently parse, but ignore.
280 bool LLParser::ParseDepLibs() {
281 assert(Lex.getKind() == lltok::kw_deplibs);
283 if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
284 ParseToken(lltok::lsquare, "expected '=' after deplibs"))
287 if (EatIfPresent(lltok::rsquare))
292 if (ParseStringConstant(Str)) return true;
293 } while (EatIfPresent(lltok::comma));
295 return ParseToken(lltok::rsquare, "expected ']' at end of list");
298 /// ParseUnnamedType:
299 /// ::= LocalVarID '=' 'type' type
300 bool LLParser::ParseUnnamedType() {
301 LocTy TypeLoc = Lex.getLoc();
302 unsigned TypeID = Lex.getUIntVal();
303 Lex.Lex(); // eat LocalVarID;
305 if (ParseToken(lltok::equal, "expected '=' after name") ||
306 ParseToken(lltok::kw_type, "expected 'type' after '='"))
309 Type *Result = nullptr;
310 if (ParseStructDefinition(TypeLoc, "",
311 NumberedTypes[TypeID], Result)) return true;
313 if (!isa<StructType>(Result)) {
314 std::pair<Type*, LocTy> &Entry = NumberedTypes[TypeID];
316 return Error(TypeLoc, "non-struct types may not be recursive");
317 Entry.first = Result;
318 Entry.second = SMLoc();
326 /// ::= LocalVar '=' 'type' type
327 bool LLParser::ParseNamedType() {
328 std::string Name = Lex.getStrVal();
329 LocTy NameLoc = Lex.getLoc();
330 Lex.Lex(); // eat LocalVar.
332 if (ParseToken(lltok::equal, "expected '=' after name") ||
333 ParseToken(lltok::kw_type, "expected 'type' after name"))
336 Type *Result = nullptr;
337 if (ParseStructDefinition(NameLoc, Name,
338 NamedTypes[Name], Result)) return true;
340 if (!isa<StructType>(Result)) {
341 std::pair<Type*, LocTy> &Entry = NamedTypes[Name];
343 return Error(NameLoc, "non-struct types may not be recursive");
344 Entry.first = Result;
345 Entry.second = SMLoc();
353 /// ::= 'declare' FunctionHeader
354 bool LLParser::ParseDeclare() {
355 assert(Lex.getKind() == lltok::kw_declare);
359 return ParseFunctionHeader(F, false);
363 /// ::= 'define' FunctionHeader (!dbg !56)* '{' ...
364 bool LLParser::ParseDefine() {
365 assert(Lex.getKind() == lltok::kw_define);
369 return ParseFunctionHeader(F, true) ||
370 ParseOptionalFunctionMetadata(*F) ||
371 ParseFunctionBody(*F);
377 bool LLParser::ParseGlobalType(bool &IsConstant) {
378 if (Lex.getKind() == lltok::kw_constant)
380 else if (Lex.getKind() == lltok::kw_global)
384 return TokError("expected 'global' or 'constant'");
390 /// ParseUnnamedGlobal:
391 /// OptionalVisibility ALIAS ...
392 /// OptionalLinkage OptionalVisibility OptionalDLLStorageClass
393 /// ... -> global variable
394 /// GlobalID '=' OptionalVisibility ALIAS ...
395 /// GlobalID '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
396 /// ... -> global variable
397 bool LLParser::ParseUnnamedGlobal() {
398 unsigned VarID = NumberedVals.size();
400 LocTy NameLoc = Lex.getLoc();
402 // Handle the GlobalID form.
403 if (Lex.getKind() == lltok::GlobalID) {
404 if (Lex.getUIntVal() != VarID)
405 return Error(Lex.getLoc(), "variable expected to be numbered '%" +
407 Lex.Lex(); // eat GlobalID;
409 if (ParseToken(lltok::equal, "expected '=' after name"))
414 unsigned Linkage, Visibility, DLLStorageClass;
415 GlobalVariable::ThreadLocalMode TLM;
417 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
418 ParseOptionalVisibility(Visibility) ||
419 ParseOptionalDLLStorageClass(DLLStorageClass) ||
420 ParseOptionalThreadLocal(TLM) ||
421 parseOptionalUnnamedAddr(UnnamedAddr))
424 if (Lex.getKind() != lltok::kw_alias)
425 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility,
426 DLLStorageClass, TLM, UnnamedAddr);
427 return ParseAlias(Name, NameLoc, Linkage, Visibility, DLLStorageClass, TLM,
431 /// ParseNamedGlobal:
432 /// GlobalVar '=' OptionalVisibility ALIAS ...
433 /// GlobalVar '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
434 /// ... -> global variable
435 bool LLParser::ParseNamedGlobal() {
436 assert(Lex.getKind() == lltok::GlobalVar);
437 LocTy NameLoc = Lex.getLoc();
438 std::string Name = Lex.getStrVal();
442 unsigned Linkage, Visibility, DLLStorageClass;
443 GlobalVariable::ThreadLocalMode TLM;
445 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
446 ParseOptionalLinkage(Linkage, HasLinkage) ||
447 ParseOptionalVisibility(Visibility) ||
448 ParseOptionalDLLStorageClass(DLLStorageClass) ||
449 ParseOptionalThreadLocal(TLM) ||
450 parseOptionalUnnamedAddr(UnnamedAddr))
453 if (Lex.getKind() != lltok::kw_alias)
454 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility,
455 DLLStorageClass, TLM, UnnamedAddr);
457 return ParseAlias(Name, NameLoc, Linkage, Visibility, DLLStorageClass, TLM,
461 bool LLParser::parseComdat() {
462 assert(Lex.getKind() == lltok::ComdatVar);
463 std::string Name = Lex.getStrVal();
464 LocTy NameLoc = Lex.getLoc();
467 if (ParseToken(lltok::equal, "expected '=' here"))
470 if (ParseToken(lltok::kw_comdat, "expected comdat keyword"))
471 return TokError("expected comdat type");
473 Comdat::SelectionKind SK;
474 switch (Lex.getKind()) {
476 return TokError("unknown selection kind");
480 case lltok::kw_exactmatch:
481 SK = Comdat::ExactMatch;
483 case lltok::kw_largest:
484 SK = Comdat::Largest;
486 case lltok::kw_noduplicates:
487 SK = Comdat::NoDuplicates;
489 case lltok::kw_samesize:
490 SK = Comdat::SameSize;
495 // See if the comdat was forward referenced, if so, use the comdat.
496 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
497 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
498 if (I != ComdatSymTab.end() && !ForwardRefComdats.erase(Name))
499 return Error(NameLoc, "redefinition of comdat '$" + Name + "'");
502 if (I != ComdatSymTab.end())
505 C = M->getOrInsertComdat(Name);
506 C->setSelectionKind(SK);
512 // ::= '!' STRINGCONSTANT
513 bool LLParser::ParseMDString(MDString *&Result) {
515 if (ParseStringConstant(Str)) return true;
516 llvm::UpgradeMDStringConstant(Str);
517 Result = MDString::get(Context, Str);
522 // ::= '!' MDNodeNumber
523 bool LLParser::ParseMDNodeID(MDNode *&Result) {
524 // !{ ..., !42, ... }
526 if (ParseUInt32(MID))
529 // If not a forward reference, just return it now.
530 if (NumberedMetadata.count(MID)) {
531 Result = NumberedMetadata[MID];
535 // Otherwise, create MDNode forward reference.
536 auto &FwdRef = ForwardRefMDNodes[MID];
537 FwdRef = std::make_pair(MDTuple::getTemporary(Context, None), Lex.getLoc());
539 Result = FwdRef.first.get();
540 NumberedMetadata[MID].reset(Result);
544 /// ParseNamedMetadata:
545 /// !foo = !{ !1, !2 }
546 bool LLParser::ParseNamedMetadata() {
547 assert(Lex.getKind() == lltok::MetadataVar);
548 std::string Name = Lex.getStrVal();
551 if (ParseToken(lltok::equal, "expected '=' here") ||
552 ParseToken(lltok::exclaim, "Expected '!' here") ||
553 ParseToken(lltok::lbrace, "Expected '{' here"))
556 NamedMDNode *NMD = M->getOrInsertNamedMetadata(Name);
557 if (Lex.getKind() != lltok::rbrace)
559 if (ParseToken(lltok::exclaim, "Expected '!' here"))
563 if (ParseMDNodeID(N)) return true;
565 } while (EatIfPresent(lltok::comma));
567 if (ParseToken(lltok::rbrace, "expected end of metadata node"))
573 /// ParseStandaloneMetadata:
575 bool LLParser::ParseStandaloneMetadata() {
576 assert(Lex.getKind() == lltok::exclaim);
578 unsigned MetadataID = 0;
581 if (ParseUInt32(MetadataID) ||
582 ParseToken(lltok::equal, "expected '=' here"))
585 // Detect common error, from old metadata syntax.
586 if (Lex.getKind() == lltok::Type)
587 return TokError("unexpected type in metadata definition");
589 bool IsDistinct = EatIfPresent(lltok::kw_distinct);
590 if (Lex.getKind() == lltok::MetadataVar) {
591 if (ParseSpecializedMDNode(Init, IsDistinct))
593 } else if (ParseToken(lltok::exclaim, "Expected '!' here") ||
594 ParseMDTuple(Init, IsDistinct))
597 // See if this was forward referenced, if so, handle it.
598 auto FI = ForwardRefMDNodes.find(MetadataID);
599 if (FI != ForwardRefMDNodes.end()) {
600 FI->second.first->replaceAllUsesWith(Init);
601 ForwardRefMDNodes.erase(FI);
603 assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work");
605 if (NumberedMetadata.count(MetadataID))
606 return TokError("Metadata id is already used");
607 NumberedMetadata[MetadataID].reset(Init);
613 static bool isValidVisibilityForLinkage(unsigned V, unsigned L) {
614 return !GlobalValue::isLocalLinkage((GlobalValue::LinkageTypes)L) ||
615 (GlobalValue::VisibilityTypes)V == GlobalValue::DefaultVisibility;
619 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility
620 /// OptionalDLLStorageClass OptionalThreadLocal
621 /// OptionalUnNammedAddr 'alias' Aliasee
626 /// Everything through OptionalUnNammedAddr has already been parsed.
628 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc, unsigned L,
629 unsigned Visibility, unsigned DLLStorageClass,
630 GlobalVariable::ThreadLocalMode TLM,
632 assert(Lex.getKind() == lltok::kw_alias);
635 GlobalValue::LinkageTypes Linkage = (GlobalValue::LinkageTypes) L;
637 if(!GlobalAlias::isValidLinkage(Linkage))
638 return Error(NameLoc, "invalid linkage type for alias");
640 if (!isValidVisibilityForLinkage(Visibility, L))
641 return Error(NameLoc,
642 "symbol with local linkage must have default visibility");
645 LocTy AliaseeLoc = Lex.getLoc();
646 if (Lex.getKind() != lltok::kw_bitcast &&
647 Lex.getKind() != lltok::kw_getelementptr &&
648 Lex.getKind() != lltok::kw_addrspacecast &&
649 Lex.getKind() != lltok::kw_inttoptr) {
650 if (ParseGlobalTypeAndValue(Aliasee))
653 // The bitcast dest type is not present, it is implied by the dest type.
657 if (ID.Kind != ValID::t_Constant)
658 return Error(AliaseeLoc, "invalid aliasee");
659 Aliasee = ID.ConstantVal;
662 Type *AliaseeType = Aliasee->getType();
663 auto *PTy = dyn_cast<PointerType>(AliaseeType);
665 return Error(AliaseeLoc, "An alias must have pointer type");
666 Type *Ty = PTy->getElementType();
667 unsigned AddrSpace = PTy->getAddressSpace();
669 // Okay, create the alias but do not insert it into the module yet.
670 std::unique_ptr<GlobalAlias> GA(
671 GlobalAlias::create(Ty, AddrSpace, (GlobalValue::LinkageTypes)Linkage,
672 Name, Aliasee, /*Parent*/ nullptr));
673 GA->setThreadLocalMode(TLM);
674 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
675 GA->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
676 GA->setUnnamedAddr(UnnamedAddr);
678 // See if this value already exists in the symbol table. If so, it is either
679 // a redefinition or a definition of a forward reference.
680 if (GlobalValue *Val = M->getNamedValue(Name)) {
681 // See if this was a redefinition. If so, there is no entry in
683 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
684 I = ForwardRefVals.find(Name);
685 if (I == ForwardRefVals.end())
686 return Error(NameLoc, "redefinition of global named '@" + Name + "'");
688 // Otherwise, this was a definition of forward ref. Verify that types
690 if (Val->getType() != GA->getType())
691 return Error(NameLoc,
692 "forward reference and definition of alias have different types");
694 // If they agree, just RAUW the old value with the alias and remove the
696 Val->replaceAllUsesWith(GA.get());
697 Val->eraseFromParent();
698 ForwardRefVals.erase(I);
701 // Insert into the module, we know its name won't collide now.
702 M->getAliasList().push_back(GA.get());
703 assert(GA->getName() == Name && "Should not be a name conflict!");
705 // The module owns this now
712 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
713 /// OptionalThreadLocal OptionalUnNammedAddr OptionalAddrSpace
714 /// OptionalExternallyInitialized GlobalType Type Const
715 /// ::= OptionalLinkage OptionalVisibility OptionalDLLStorageClass
716 /// OptionalThreadLocal OptionalUnNammedAddr OptionalAddrSpace
717 /// OptionalExternallyInitialized GlobalType Type Const
719 /// Everything up to and including OptionalUnNammedAddr has been parsed
722 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
723 unsigned Linkage, bool HasLinkage,
724 unsigned Visibility, unsigned DLLStorageClass,
725 GlobalVariable::ThreadLocalMode TLM,
727 if (!isValidVisibilityForLinkage(Visibility, Linkage))
728 return Error(NameLoc,
729 "symbol with local linkage must have default visibility");
732 bool IsConstant, IsExternallyInitialized;
733 LocTy IsExternallyInitializedLoc;
737 if (ParseOptionalAddrSpace(AddrSpace) ||
738 ParseOptionalToken(lltok::kw_externally_initialized,
739 IsExternallyInitialized,
740 &IsExternallyInitializedLoc) ||
741 ParseGlobalType(IsConstant) ||
742 ParseType(Ty, TyLoc))
745 // If the linkage is specified and is external, then no initializer is
747 Constant *Init = nullptr;
748 if (!HasLinkage || (Linkage != GlobalValue::ExternalWeakLinkage &&
749 Linkage != GlobalValue::ExternalLinkage)) {
750 if (ParseGlobalValue(Ty, Init))
754 if (Ty->isFunctionTy() || !PointerType::isValidElementType(Ty))
755 return Error(TyLoc, "invalid type for global variable");
757 GlobalValue *GVal = nullptr;
759 // See if the global was forward referenced, if so, use the global.
761 GVal = M->getNamedValue(Name);
763 if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
764 return Error(NameLoc, "redefinition of global '@" + Name + "'");
767 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
768 I = ForwardRefValIDs.find(NumberedVals.size());
769 if (I != ForwardRefValIDs.end()) {
770 GVal = I->second.first;
771 ForwardRefValIDs.erase(I);
777 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, nullptr,
778 Name, nullptr, GlobalVariable::NotThreadLocal,
781 if (GVal->getType()->getElementType() != Ty)
783 "forward reference and definition of global have different types");
785 GV = cast<GlobalVariable>(GVal);
787 // Move the forward-reference to the correct spot in the module.
788 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
792 NumberedVals.push_back(GV);
794 // Set the parsed properties on the global.
796 GV->setInitializer(Init);
797 GV->setConstant(IsConstant);
798 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
799 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
800 GV->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
801 GV->setExternallyInitialized(IsExternallyInitialized);
802 GV->setThreadLocalMode(TLM);
803 GV->setUnnamedAddr(UnnamedAddr);
805 // Parse attributes on the global.
806 while (Lex.getKind() == lltok::comma) {
809 if (Lex.getKind() == lltok::kw_section) {
811 GV->setSection(Lex.getStrVal());
812 if (ParseToken(lltok::StringConstant, "expected global section string"))
814 } else if (Lex.getKind() == lltok::kw_align) {
816 if (ParseOptionalAlignment(Alignment)) return true;
817 GV->setAlignment(Alignment);
820 if (parseOptionalComdat(Name, C))
825 return TokError("unknown global variable property!");
832 /// ParseUnnamedAttrGrp
833 /// ::= 'attributes' AttrGrpID '=' '{' AttrValPair+ '}'
834 bool LLParser::ParseUnnamedAttrGrp() {
835 assert(Lex.getKind() == lltok::kw_attributes);
836 LocTy AttrGrpLoc = Lex.getLoc();
839 if (Lex.getKind() != lltok::AttrGrpID)
840 return TokError("expected attribute group id");
842 unsigned VarID = Lex.getUIntVal();
843 std::vector<unsigned> unused;
847 if (ParseToken(lltok::equal, "expected '=' here") ||
848 ParseToken(lltok::lbrace, "expected '{' here") ||
849 ParseFnAttributeValuePairs(NumberedAttrBuilders[VarID], unused, true,
851 ParseToken(lltok::rbrace, "expected end of attribute group"))
854 if (!NumberedAttrBuilders[VarID].hasAttributes())
855 return Error(AttrGrpLoc, "attribute group has no attributes");
860 /// ParseFnAttributeValuePairs
861 /// ::= <attr> | <attr> '=' <value>
862 bool LLParser::ParseFnAttributeValuePairs(AttrBuilder &B,
863 std::vector<unsigned> &FwdRefAttrGrps,
864 bool inAttrGrp, LocTy &BuiltinLoc) {
865 bool HaveError = false;
870 lltok::Kind Token = Lex.getKind();
871 if (Token == lltok::kw_builtin)
872 BuiltinLoc = Lex.getLoc();
875 if (!inAttrGrp) return HaveError;
876 return Error(Lex.getLoc(), "unterminated attribute group");
881 case lltok::AttrGrpID: {
882 // Allow a function to reference an attribute group:
884 // define void @foo() #1 { ... }
888 "cannot have an attribute group reference in an attribute group");
890 unsigned AttrGrpNum = Lex.getUIntVal();
891 if (inAttrGrp) break;
893 // Save the reference to the attribute group. We'll fill it in later.
894 FwdRefAttrGrps.push_back(AttrGrpNum);
897 // Target-dependent attributes:
898 case lltok::StringConstant: {
899 std::string Attr = Lex.getStrVal();
902 if (EatIfPresent(lltok::equal) &&
903 ParseStringConstant(Val))
906 B.addAttribute(Attr, Val);
910 // Target-independent attributes:
911 case lltok::kw_align: {
912 // As a hack, we allow function alignment to be initially parsed as an
913 // attribute on a function declaration/definition or added to an attribute
914 // group and later moved to the alignment field.
918 if (ParseToken(lltok::equal, "expected '=' here") ||
919 ParseUInt32(Alignment))
922 if (ParseOptionalAlignment(Alignment))
925 B.addAlignmentAttr(Alignment);
928 case lltok::kw_alignstack: {
932 if (ParseToken(lltok::equal, "expected '=' here") ||
933 ParseUInt32(Alignment))
936 if (ParseOptionalStackAlignment(Alignment))
939 B.addStackAlignmentAttr(Alignment);
942 case lltok::kw_alwaysinline: B.addAttribute(Attribute::AlwaysInline); break;
943 case lltok::kw_builtin: B.addAttribute(Attribute::Builtin); break;
944 case lltok::kw_cold: B.addAttribute(Attribute::Cold); break;
945 case lltok::kw_inlinehint: B.addAttribute(Attribute::InlineHint); break;
946 case lltok::kw_jumptable: B.addAttribute(Attribute::JumpTable); break;
947 case lltok::kw_minsize: B.addAttribute(Attribute::MinSize); break;
948 case lltok::kw_naked: B.addAttribute(Attribute::Naked); break;
949 case lltok::kw_nobuiltin: B.addAttribute(Attribute::NoBuiltin); break;
950 case lltok::kw_noduplicate: B.addAttribute(Attribute::NoDuplicate); break;
951 case lltok::kw_noimplicitfloat: B.addAttribute(Attribute::NoImplicitFloat); break;
952 case lltok::kw_noinline: B.addAttribute(Attribute::NoInline); break;
953 case lltok::kw_nonlazybind: B.addAttribute(Attribute::NonLazyBind); break;
954 case lltok::kw_noredzone: B.addAttribute(Attribute::NoRedZone); break;
955 case lltok::kw_noreturn: B.addAttribute(Attribute::NoReturn); break;
956 case lltok::kw_nounwind: B.addAttribute(Attribute::NoUnwind); break;
957 case lltok::kw_optnone: B.addAttribute(Attribute::OptimizeNone); break;
958 case lltok::kw_optsize: B.addAttribute(Attribute::OptimizeForSize); break;
959 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
960 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
961 case lltok::kw_returns_twice: B.addAttribute(Attribute::ReturnsTwice); break;
962 case lltok::kw_ssp: B.addAttribute(Attribute::StackProtect); break;
963 case lltok::kw_sspreq: B.addAttribute(Attribute::StackProtectReq); break;
964 case lltok::kw_sspstrong: B.addAttribute(Attribute::StackProtectStrong); break;
965 case lltok::kw_sanitize_address: B.addAttribute(Attribute::SanitizeAddress); break;
966 case lltok::kw_sanitize_thread: B.addAttribute(Attribute::SanitizeThread); break;
967 case lltok::kw_sanitize_memory: B.addAttribute(Attribute::SanitizeMemory); break;
968 case lltok::kw_uwtable: B.addAttribute(Attribute::UWTable); break;
971 case lltok::kw_inreg:
972 case lltok::kw_signext:
973 case lltok::kw_zeroext:
976 "invalid use of attribute on a function");
978 case lltok::kw_byval:
979 case lltok::kw_dereferenceable:
980 case lltok::kw_dereferenceable_or_null:
981 case lltok::kw_inalloca:
983 case lltok::kw_noalias:
984 case lltok::kw_nocapture:
985 case lltok::kw_nonnull:
986 case lltok::kw_returned:
990 "invalid use of parameter-only attribute on a function");
998 //===----------------------------------------------------------------------===//
999 // GlobalValue Reference/Resolution Routines.
1000 //===----------------------------------------------------------------------===//
1002 /// GetGlobalVal - Get a value with the specified name or ID, creating a
1003 /// forward reference record if needed. This can return null if the value
1004 /// exists but does not have the right type.
1005 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
1007 PointerType *PTy = dyn_cast<PointerType>(Ty);
1009 Error(Loc, "global variable reference must have pointer type");
1013 // Look this name up in the normal function symbol table.
1015 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
1017 // If this is a forward reference for the value, see if we already created a
1018 // forward ref record.
1020 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
1021 I = ForwardRefVals.find(Name);
1022 if (I != ForwardRefVals.end())
1023 Val = I->second.first;
1026 // If we have the value in the symbol table or fwd-ref table, return it.
1028 if (Val->getType() == Ty) return Val;
1029 Error(Loc, "'@" + Name + "' defined with type '" +
1030 getTypeString(Val->getType()) + "'");
1034 // Otherwise, create a new forward reference for this value and remember it.
1035 GlobalValue *FwdVal;
1036 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1037 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
1039 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1040 GlobalValue::ExternalWeakLinkage, nullptr, Name,
1041 nullptr, GlobalVariable::NotThreadLocal,
1042 PTy->getAddressSpace());
1044 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1048 GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
1049 PointerType *PTy = dyn_cast<PointerType>(Ty);
1051 Error(Loc, "global variable reference must have pointer type");
1055 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
1057 // If this is a forward reference for the value, see if we already created a
1058 // forward ref record.
1060 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
1061 I = ForwardRefValIDs.find(ID);
1062 if (I != ForwardRefValIDs.end())
1063 Val = I->second.first;
1066 // If we have the value in the symbol table or fwd-ref table, return it.
1068 if (Val->getType() == Ty) return Val;
1069 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
1070 getTypeString(Val->getType()) + "'");
1074 // Otherwise, create a new forward reference for this value and remember it.
1075 GlobalValue *FwdVal;
1076 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1077 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
1079 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1080 GlobalValue::ExternalWeakLinkage, nullptr, "");
1082 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1087 //===----------------------------------------------------------------------===//
1088 // Comdat Reference/Resolution Routines.
1089 //===----------------------------------------------------------------------===//
1091 Comdat *LLParser::getComdat(const std::string &Name, LocTy Loc) {
1092 // Look this name up in the comdat symbol table.
1093 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
1094 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
1095 if (I != ComdatSymTab.end())
1098 // Otherwise, create a new forward reference for this value and remember it.
1099 Comdat *C = M->getOrInsertComdat(Name);
1100 ForwardRefComdats[Name] = Loc;
1105 //===----------------------------------------------------------------------===//
1107 //===----------------------------------------------------------------------===//
1109 /// ParseToken - If the current token has the specified kind, eat it and return
1110 /// success. Otherwise, emit the specified error and return failure.
1111 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
1112 if (Lex.getKind() != T)
1113 return TokError(ErrMsg);
1118 /// ParseStringConstant
1119 /// ::= StringConstant
1120 bool LLParser::ParseStringConstant(std::string &Result) {
1121 if (Lex.getKind() != lltok::StringConstant)
1122 return TokError("expected string constant");
1123 Result = Lex.getStrVal();
1130 bool LLParser::ParseUInt32(unsigned &Val) {
1131 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1132 return TokError("expected integer");
1133 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
1134 if (Val64 != unsigned(Val64))
1135 return TokError("expected 32-bit integer (too large)");
1143 bool LLParser::ParseUInt64(uint64_t &Val) {
1144 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1145 return TokError("expected integer");
1146 Val = Lex.getAPSIntVal().getLimitedValue();
1152 /// := 'localdynamic'
1153 /// := 'initialexec'
1155 bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
1156 switch (Lex.getKind()) {
1158 return TokError("expected localdynamic, initialexec or localexec");
1159 case lltok::kw_localdynamic:
1160 TLM = GlobalVariable::LocalDynamicTLSModel;
1162 case lltok::kw_initialexec:
1163 TLM = GlobalVariable::InitialExecTLSModel;
1165 case lltok::kw_localexec:
1166 TLM = GlobalVariable::LocalExecTLSModel;
1174 /// ParseOptionalThreadLocal
1176 /// := 'thread_local'
1177 /// := 'thread_local' '(' tlsmodel ')'
1178 bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
1179 TLM = GlobalVariable::NotThreadLocal;
1180 if (!EatIfPresent(lltok::kw_thread_local))
1183 TLM = GlobalVariable::GeneralDynamicTLSModel;
1184 if (Lex.getKind() == lltok::lparen) {
1186 return ParseTLSModel(TLM) ||
1187 ParseToken(lltok::rparen, "expected ')' after thread local model");
1192 /// ParseOptionalAddrSpace
1194 /// := 'addrspace' '(' uint32 ')'
1195 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
1197 if (!EatIfPresent(lltok::kw_addrspace))
1199 return ParseToken(lltok::lparen, "expected '(' in address space") ||
1200 ParseUInt32(AddrSpace) ||
1201 ParseToken(lltok::rparen, "expected ')' in address space");
1204 /// ParseOptionalParamAttrs - Parse a potentially empty list of parameter attributes.
1205 bool LLParser::ParseOptionalParamAttrs(AttrBuilder &B) {
1206 bool HaveError = false;
1211 lltok::Kind Token = Lex.getKind();
1213 default: // End of attributes.
1215 case lltok::kw_align: {
1217 if (ParseOptionalAlignment(Alignment))
1219 B.addAlignmentAttr(Alignment);
1222 case lltok::kw_byval: B.addAttribute(Attribute::ByVal); break;
1223 case lltok::kw_dereferenceable: {
1225 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1227 B.addDereferenceableAttr(Bytes);
1230 case lltok::kw_dereferenceable_or_null: {
1232 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1234 B.addDereferenceableOrNullAttr(Bytes);
1237 case lltok::kw_inalloca: B.addAttribute(Attribute::InAlloca); break;
1238 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1239 case lltok::kw_nest: B.addAttribute(Attribute::Nest); break;
1240 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1241 case lltok::kw_nocapture: B.addAttribute(Attribute::NoCapture); break;
1242 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1243 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1244 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1245 case lltok::kw_returned: B.addAttribute(Attribute::Returned); break;
1246 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1247 case lltok::kw_sret: B.addAttribute(Attribute::StructRet); break;
1248 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1250 case lltok::kw_alignstack:
1251 case lltok::kw_alwaysinline:
1252 case lltok::kw_builtin:
1253 case lltok::kw_inlinehint:
1254 case lltok::kw_jumptable:
1255 case lltok::kw_minsize:
1256 case lltok::kw_naked:
1257 case lltok::kw_nobuiltin:
1258 case lltok::kw_noduplicate:
1259 case lltok::kw_noimplicitfloat:
1260 case lltok::kw_noinline:
1261 case lltok::kw_nonlazybind:
1262 case lltok::kw_noredzone:
1263 case lltok::kw_noreturn:
1264 case lltok::kw_nounwind:
1265 case lltok::kw_optnone:
1266 case lltok::kw_optsize:
1267 case lltok::kw_returns_twice:
1268 case lltok::kw_sanitize_address:
1269 case lltok::kw_sanitize_memory:
1270 case lltok::kw_sanitize_thread:
1272 case lltok::kw_sspreq:
1273 case lltok::kw_sspstrong:
1274 case lltok::kw_uwtable:
1275 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1283 /// ParseOptionalReturnAttrs - Parse a potentially empty list of return attributes.
1284 bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
1285 bool HaveError = false;
1290 lltok::Kind Token = Lex.getKind();
1292 default: // End of attributes.
1294 case lltok::kw_dereferenceable: {
1296 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1298 B.addDereferenceableAttr(Bytes);
1301 case lltok::kw_dereferenceable_or_null: {
1303 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1305 B.addDereferenceableOrNullAttr(Bytes);
1308 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1309 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1310 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1311 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1312 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1315 case lltok::kw_align:
1316 case lltok::kw_byval:
1317 case lltok::kw_inalloca:
1318 case lltok::kw_nest:
1319 case lltok::kw_nocapture:
1320 case lltok::kw_returned:
1321 case lltok::kw_sret:
1322 HaveError |= Error(Lex.getLoc(), "invalid use of parameter-only attribute");
1325 case lltok::kw_alignstack:
1326 case lltok::kw_alwaysinline:
1327 case lltok::kw_builtin:
1328 case lltok::kw_cold:
1329 case lltok::kw_inlinehint:
1330 case lltok::kw_jumptable:
1331 case lltok::kw_minsize:
1332 case lltok::kw_naked:
1333 case lltok::kw_nobuiltin:
1334 case lltok::kw_noduplicate:
1335 case lltok::kw_noimplicitfloat:
1336 case lltok::kw_noinline:
1337 case lltok::kw_nonlazybind:
1338 case lltok::kw_noredzone:
1339 case lltok::kw_noreturn:
1340 case lltok::kw_nounwind:
1341 case lltok::kw_optnone:
1342 case lltok::kw_optsize:
1343 case lltok::kw_returns_twice:
1344 case lltok::kw_sanitize_address:
1345 case lltok::kw_sanitize_memory:
1346 case lltok::kw_sanitize_thread:
1348 case lltok::kw_sspreq:
1349 case lltok::kw_sspstrong:
1350 case lltok::kw_uwtable:
1351 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1354 case lltok::kw_readnone:
1355 case lltok::kw_readonly:
1356 HaveError |= Error(Lex.getLoc(), "invalid use of attribute on return type");
1363 /// ParseOptionalLinkage
1370 /// ::= 'linkonce_odr'
1371 /// ::= 'available_externally'
1374 /// ::= 'extern_weak'
1376 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1378 switch (Lex.getKind()) {
1379 default: Res=GlobalValue::ExternalLinkage; return false;
1380 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1381 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1382 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1383 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1384 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1385 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1386 case lltok::kw_available_externally:
1387 Res = GlobalValue::AvailableExternallyLinkage;
1389 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1390 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1391 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1392 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1399 /// ParseOptionalVisibility
1405 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1406 switch (Lex.getKind()) {
1407 default: Res = GlobalValue::DefaultVisibility; return false;
1408 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1409 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1410 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1416 /// ParseOptionalDLLStorageClass
1421 bool LLParser::ParseOptionalDLLStorageClass(unsigned &Res) {
1422 switch (Lex.getKind()) {
1423 default: Res = GlobalValue::DefaultStorageClass; return false;
1424 case lltok::kw_dllimport: Res = GlobalValue::DLLImportStorageClass; break;
1425 case lltok::kw_dllexport: Res = GlobalValue::DLLExportStorageClass; break;
1431 /// ParseOptionalCallingConv
1435 /// ::= 'intel_ocl_bicc'
1437 /// ::= 'x86_stdcallcc'
1438 /// ::= 'x86_fastcallcc'
1439 /// ::= 'x86_thiscallcc'
1440 /// ::= 'x86_vectorcallcc'
1441 /// ::= 'arm_apcscc'
1442 /// ::= 'arm_aapcscc'
1443 /// ::= 'arm_aapcs_vfpcc'
1444 /// ::= 'msp430_intrcc'
1445 /// ::= 'ptx_kernel'
1446 /// ::= 'ptx_device'
1448 /// ::= 'spir_kernel'
1449 /// ::= 'x86_64_sysvcc'
1450 /// ::= 'x86_64_win64cc'
1451 /// ::= 'webkit_jscc'
1453 /// ::= 'preserve_mostcc'
1454 /// ::= 'preserve_allcc'
1458 bool LLParser::ParseOptionalCallingConv(unsigned &CC) {
1459 switch (Lex.getKind()) {
1460 default: CC = CallingConv::C; return false;
1461 case lltok::kw_ccc: CC = CallingConv::C; break;
1462 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1463 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1464 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1465 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1466 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1467 case lltok::kw_x86_vectorcallcc:CC = CallingConv::X86_VectorCall; break;
1468 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1469 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1470 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1471 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1472 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1473 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1474 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1475 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1476 case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1477 case lltok::kw_x86_64_sysvcc: CC = CallingConv::X86_64_SysV; break;
1478 case lltok::kw_x86_64_win64cc: CC = CallingConv::X86_64_Win64; break;
1479 case lltok::kw_webkit_jscc: CC = CallingConv::WebKit_JS; break;
1480 case lltok::kw_anyregcc: CC = CallingConv::AnyReg; break;
1481 case lltok::kw_preserve_mostcc:CC = CallingConv::PreserveMost; break;
1482 case lltok::kw_preserve_allcc: CC = CallingConv::PreserveAll; break;
1483 case lltok::kw_ghccc: CC = CallingConv::GHC; break;
1484 case lltok::kw_cc: {
1486 return ParseUInt32(CC);
1494 /// ParseMetadataAttachment
1496 bool LLParser::ParseMetadataAttachment(unsigned &Kind, MDNode *&MD) {
1497 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata attachment");
1499 std::string Name = Lex.getStrVal();
1500 Kind = M->getMDKindID(Name);
1503 return ParseMDNode(MD);
1506 /// ParseInstructionMetadata
1507 /// ::= !dbg !42 (',' !dbg !57)*
1508 bool LLParser::ParseInstructionMetadata(Instruction &Inst) {
1510 if (Lex.getKind() != lltok::MetadataVar)
1511 return TokError("expected metadata after comma");
1515 if (ParseMetadataAttachment(MDK, N))
1518 Inst.setMetadata(MDK, N);
1519 if (MDK == LLVMContext::MD_tbaa)
1520 InstsWithTBAATag.push_back(&Inst);
1522 // If this is the end of the list, we're done.
1523 } while (EatIfPresent(lltok::comma));
1527 /// ParseOptionalFunctionMetadata
1529 bool LLParser::ParseOptionalFunctionMetadata(Function &F) {
1530 while (Lex.getKind() == lltok::MetadataVar) {
1533 if (ParseMetadataAttachment(MDK, N))
1536 F.setMetadata(MDK, N);
1541 /// ParseOptionalAlignment
1544 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1546 if (!EatIfPresent(lltok::kw_align))
1548 LocTy AlignLoc = Lex.getLoc();
1549 if (ParseUInt32(Alignment)) return true;
1550 if (!isPowerOf2_32(Alignment))
1551 return Error(AlignLoc, "alignment is not a power of two");
1552 if (Alignment > Value::MaximumAlignment)
1553 return Error(AlignLoc, "huge alignments are not supported yet");
1557 /// ParseOptionalDerefAttrBytes
1559 /// ::= AttrKind '(' 4 ')'
1561 /// where AttrKind is either 'dereferenceable' or 'dereferenceable_or_null'.
1562 bool LLParser::ParseOptionalDerefAttrBytes(lltok::Kind AttrKind,
1564 assert((AttrKind == lltok::kw_dereferenceable ||
1565 AttrKind == lltok::kw_dereferenceable_or_null) &&
1569 if (!EatIfPresent(AttrKind))
1571 LocTy ParenLoc = Lex.getLoc();
1572 if (!EatIfPresent(lltok::lparen))
1573 return Error(ParenLoc, "expected '('");
1574 LocTy DerefLoc = Lex.getLoc();
1575 if (ParseUInt64(Bytes)) return true;
1576 ParenLoc = Lex.getLoc();
1577 if (!EatIfPresent(lltok::rparen))
1578 return Error(ParenLoc, "expected ')'");
1580 return Error(DerefLoc, "dereferenceable bytes must be non-zero");
1584 /// ParseOptionalCommaAlign
1588 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1590 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1591 bool &AteExtraComma) {
1592 AteExtraComma = false;
1593 while (EatIfPresent(lltok::comma)) {
1594 // Metadata at the end is an early exit.
1595 if (Lex.getKind() == lltok::MetadataVar) {
1596 AteExtraComma = true;
1600 if (Lex.getKind() != lltok::kw_align)
1601 return Error(Lex.getLoc(), "expected metadata or 'align'");
1603 if (ParseOptionalAlignment(Alignment)) return true;
1609 /// ParseScopeAndOrdering
1610 /// if isAtomic: ::= 'singlethread'? AtomicOrdering
1613 /// This sets Scope and Ordering to the parsed values.
1614 bool LLParser::ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope,
1615 AtomicOrdering &Ordering) {
1619 Scope = CrossThread;
1620 if (EatIfPresent(lltok::kw_singlethread))
1621 Scope = SingleThread;
1623 return ParseOrdering(Ordering);
1627 /// ::= AtomicOrdering
1629 /// This sets Ordering to the parsed value.
1630 bool LLParser::ParseOrdering(AtomicOrdering &Ordering) {
1631 switch (Lex.getKind()) {
1632 default: return TokError("Expected ordering on atomic instruction");
1633 case lltok::kw_unordered: Ordering = Unordered; break;
1634 case lltok::kw_monotonic: Ordering = Monotonic; break;
1635 case lltok::kw_acquire: Ordering = Acquire; break;
1636 case lltok::kw_release: Ordering = Release; break;
1637 case lltok::kw_acq_rel: Ordering = AcquireRelease; break;
1638 case lltok::kw_seq_cst: Ordering = SequentiallyConsistent; break;
1644 /// ParseOptionalStackAlignment
1646 /// ::= 'alignstack' '(' 4 ')'
1647 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1649 if (!EatIfPresent(lltok::kw_alignstack))
1651 LocTy ParenLoc = Lex.getLoc();
1652 if (!EatIfPresent(lltok::lparen))
1653 return Error(ParenLoc, "expected '('");
1654 LocTy AlignLoc = Lex.getLoc();
1655 if (ParseUInt32(Alignment)) return true;
1656 ParenLoc = Lex.getLoc();
1657 if (!EatIfPresent(lltok::rparen))
1658 return Error(ParenLoc, "expected ')'");
1659 if (!isPowerOf2_32(Alignment))
1660 return Error(AlignLoc, "stack alignment is not a power of two");
1664 /// ParseIndexList - This parses the index list for an insert/extractvalue
1665 /// instruction. This sets AteExtraComma in the case where we eat an extra
1666 /// comma at the end of the line and find that it is followed by metadata.
1667 /// Clients that don't allow metadata can call the version of this function that
1668 /// only takes one argument.
1671 /// ::= (',' uint32)+
1673 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1674 bool &AteExtraComma) {
1675 AteExtraComma = false;
1677 if (Lex.getKind() != lltok::comma)
1678 return TokError("expected ',' as start of index list");
1680 while (EatIfPresent(lltok::comma)) {
1681 if (Lex.getKind() == lltok::MetadataVar) {
1682 if (Indices.empty()) return TokError("expected index");
1683 AteExtraComma = true;
1687 if (ParseUInt32(Idx)) return true;
1688 Indices.push_back(Idx);
1694 //===----------------------------------------------------------------------===//
1696 //===----------------------------------------------------------------------===//
1698 /// ParseType - Parse a type.
1699 bool LLParser::ParseType(Type *&Result, const Twine &Msg, bool AllowVoid) {
1700 SMLoc TypeLoc = Lex.getLoc();
1701 switch (Lex.getKind()) {
1703 return TokError(Msg);
1705 // Type ::= 'float' | 'void' (etc)
1706 Result = Lex.getTyVal();
1710 // Type ::= StructType
1711 if (ParseAnonStructType(Result, false))
1714 case lltok::lsquare:
1715 // Type ::= '[' ... ']'
1716 Lex.Lex(); // eat the lsquare.
1717 if (ParseArrayVectorType(Result, false))
1720 case lltok::less: // Either vector or packed struct.
1721 // Type ::= '<' ... '>'
1723 if (Lex.getKind() == lltok::lbrace) {
1724 if (ParseAnonStructType(Result, true) ||
1725 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1727 } else if (ParseArrayVectorType(Result, true))
1730 case lltok::LocalVar: {
1732 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
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, Lex.getStrVal());
1738 Entry.second = Lex.getLoc();
1740 Result = Entry.first;
1745 case lltok::LocalVarID: {
1747 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
1749 // If the type hasn't been defined yet, create a forward definition and
1750 // remember where that forward def'n was seen (in case it never is defined).
1752 Entry.first = StructType::create(Context);
1753 Entry.second = Lex.getLoc();
1755 Result = Entry.first;
1761 // Parse the type suffixes.
1763 switch (Lex.getKind()) {
1766 if (!AllowVoid && Result->isVoidTy())
1767 return Error(TypeLoc, "void type only allowed for function results");
1770 // Type ::= Type '*'
1772 if (Result->isLabelTy())
1773 return TokError("basic block pointers are invalid");
1774 if (Result->isVoidTy())
1775 return TokError("pointers to void are invalid - use i8* instead");
1776 if (!PointerType::isValidElementType(Result))
1777 return TokError("pointer to this type is invalid");
1778 Result = PointerType::getUnqual(Result);
1782 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
1783 case lltok::kw_addrspace: {
1784 if (Result->isLabelTy())
1785 return TokError("basic block pointers are invalid");
1786 if (Result->isVoidTy())
1787 return TokError("pointers to void are invalid; use i8* instead");
1788 if (!PointerType::isValidElementType(Result))
1789 return TokError("pointer to this type is invalid");
1791 if (ParseOptionalAddrSpace(AddrSpace) ||
1792 ParseToken(lltok::star, "expected '*' in address space"))
1795 Result = PointerType::get(Result, AddrSpace);
1799 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1801 if (ParseFunctionType(Result))
1808 /// ParseParameterList
1810 /// ::= '(' Arg (',' Arg)* ')'
1812 /// ::= Type OptionalAttributes Value OptionalAttributes
1813 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1814 PerFunctionState &PFS, bool IsMustTailCall,
1815 bool InVarArgsFunc) {
1816 if (ParseToken(lltok::lparen, "expected '(' in call"))
1819 unsigned AttrIndex = 1;
1820 while (Lex.getKind() != lltok::rparen) {
1821 // If this isn't the first argument, we need a comma.
1822 if (!ArgList.empty() &&
1823 ParseToken(lltok::comma, "expected ',' in argument list"))
1826 // Parse an ellipsis if this is a musttail call in a variadic function.
1827 if (Lex.getKind() == lltok::dotdotdot) {
1828 const char *Msg = "unexpected ellipsis in argument list for ";
1829 if (!IsMustTailCall)
1830 return TokError(Twine(Msg) + "non-musttail call");
1832 return TokError(Twine(Msg) + "musttail call in non-varargs function");
1833 Lex.Lex(); // Lex the '...', it is purely for readability.
1834 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1837 // Parse the argument.
1839 Type *ArgTy = nullptr;
1840 AttrBuilder ArgAttrs;
1842 if (ParseType(ArgTy, ArgLoc))
1845 if (ArgTy->isMetadataTy()) {
1846 if (ParseMetadataAsValue(V, PFS))
1849 // Otherwise, handle normal operands.
1850 if (ParseOptionalParamAttrs(ArgAttrs) || ParseValue(ArgTy, V, PFS))
1853 ArgList.push_back(ParamInfo(ArgLoc, V, AttributeSet::get(V->getContext(),
1858 if (IsMustTailCall && InVarArgsFunc)
1859 return TokError("expected '...' at end of argument list for musttail call "
1860 "in varargs function");
1862 Lex.Lex(); // Lex the ')'.
1868 /// ParseArgumentList - Parse the argument list for a function type or function
1870 /// ::= '(' ArgTypeListI ')'
1874 /// ::= ArgTypeList ',' '...'
1875 /// ::= ArgType (',' ArgType)*
1877 bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
1880 assert(Lex.getKind() == lltok::lparen);
1881 Lex.Lex(); // eat the (.
1883 if (Lex.getKind() == lltok::rparen) {
1885 } else if (Lex.getKind() == lltok::dotdotdot) {
1889 LocTy TypeLoc = Lex.getLoc();
1890 Type *ArgTy = nullptr;
1894 if (ParseType(ArgTy) ||
1895 ParseOptionalParamAttrs(Attrs)) return true;
1897 if (ArgTy->isVoidTy())
1898 return Error(TypeLoc, "argument can not have void type");
1900 if (Lex.getKind() == lltok::LocalVar) {
1901 Name = Lex.getStrVal();
1905 if (!FunctionType::isValidArgumentType(ArgTy))
1906 return Error(TypeLoc, "invalid type for function argument");
1908 unsigned AttrIndex = 1;
1909 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1910 AttributeSet::get(ArgTy->getContext(),
1911 AttrIndex++, Attrs), Name));
1913 while (EatIfPresent(lltok::comma)) {
1914 // Handle ... at end of arg list.
1915 if (EatIfPresent(lltok::dotdotdot)) {
1920 // Otherwise must be an argument type.
1921 TypeLoc = Lex.getLoc();
1922 if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
1924 if (ArgTy->isVoidTy())
1925 return Error(TypeLoc, "argument can not have void type");
1927 if (Lex.getKind() == lltok::LocalVar) {
1928 Name = Lex.getStrVal();
1934 if (!ArgTy->isFirstClassType())
1935 return Error(TypeLoc, "invalid type for function argument");
1937 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1938 AttributeSet::get(ArgTy->getContext(),
1939 AttrIndex++, Attrs),
1944 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1947 /// ParseFunctionType
1948 /// ::= Type ArgumentList OptionalAttrs
1949 bool LLParser::ParseFunctionType(Type *&Result) {
1950 assert(Lex.getKind() == lltok::lparen);
1952 if (!FunctionType::isValidReturnType(Result))
1953 return TokError("invalid function return type");
1955 SmallVector<ArgInfo, 8> ArgList;
1957 if (ParseArgumentList(ArgList, isVarArg))
1960 // Reject names on the arguments lists.
1961 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1962 if (!ArgList[i].Name.empty())
1963 return Error(ArgList[i].Loc, "argument name invalid in function type");
1964 if (ArgList[i].Attrs.hasAttributes(i + 1))
1965 return Error(ArgList[i].Loc,
1966 "argument attributes invalid in function type");
1969 SmallVector<Type*, 16> ArgListTy;
1970 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1971 ArgListTy.push_back(ArgList[i].Ty);
1973 Result = FunctionType::get(Result, ArgListTy, isVarArg);
1977 /// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
1979 bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
1980 SmallVector<Type*, 8> Elts;
1981 if (ParseStructBody(Elts)) return true;
1983 Result = StructType::get(Context, Elts, Packed);
1987 /// ParseStructDefinition - Parse a struct in a 'type' definition.
1988 bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
1989 std::pair<Type*, LocTy> &Entry,
1991 // If the type was already defined, diagnose the redefinition.
1992 if (Entry.first && !Entry.second.isValid())
1993 return Error(TypeLoc, "redefinition of type");
1995 // If we have opaque, just return without filling in the definition for the
1996 // struct. This counts as a definition as far as the .ll file goes.
1997 if (EatIfPresent(lltok::kw_opaque)) {
1998 // This type is being defined, so clear the location to indicate this.
1999 Entry.second = SMLoc();
2001 // If this type number has never been uttered, create it.
2003 Entry.first = StructType::create(Context, Name);
2004 ResultTy = Entry.first;
2008 // If the type starts with '<', then it is either a packed struct or a vector.
2009 bool isPacked = EatIfPresent(lltok::less);
2011 // If we don't have a struct, then we have a random type alias, which we
2012 // accept for compatibility with old files. These types are not allowed to be
2013 // forward referenced and not allowed to be recursive.
2014 if (Lex.getKind() != lltok::lbrace) {
2016 return Error(TypeLoc, "forward references to non-struct type");
2020 return ParseArrayVectorType(ResultTy, true);
2021 return ParseType(ResultTy);
2024 // This type is being defined, so clear the location to indicate this.
2025 Entry.second = SMLoc();
2027 // If this type number has never been uttered, create it.
2029 Entry.first = StructType::create(Context, Name);
2031 StructType *STy = cast<StructType>(Entry.first);
2033 SmallVector<Type*, 8> Body;
2034 if (ParseStructBody(Body) ||
2035 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
2038 STy->setBody(Body, isPacked);
2044 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
2047 /// ::= '{' Type (',' Type)* '}'
2048 /// ::= '<' '{' '}' '>'
2049 /// ::= '<' '{' Type (',' Type)* '}' '>'
2050 bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
2051 assert(Lex.getKind() == lltok::lbrace);
2052 Lex.Lex(); // Consume the '{'
2054 // Handle the empty struct.
2055 if (EatIfPresent(lltok::rbrace))
2058 LocTy EltTyLoc = Lex.getLoc();
2060 if (ParseType(Ty)) return true;
2063 if (!StructType::isValidElementType(Ty))
2064 return Error(EltTyLoc, "invalid element type for struct");
2066 while (EatIfPresent(lltok::comma)) {
2067 EltTyLoc = Lex.getLoc();
2068 if (ParseType(Ty)) return true;
2070 if (!StructType::isValidElementType(Ty))
2071 return Error(EltTyLoc, "invalid element type for struct");
2076 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
2079 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
2080 /// token has already been consumed.
2082 /// ::= '[' APSINTVAL 'x' Types ']'
2083 /// ::= '<' APSINTVAL 'x' Types '>'
2084 bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
2085 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
2086 Lex.getAPSIntVal().getBitWidth() > 64)
2087 return TokError("expected number in address space");
2089 LocTy SizeLoc = Lex.getLoc();
2090 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
2093 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
2096 LocTy TypeLoc = Lex.getLoc();
2097 Type *EltTy = nullptr;
2098 if (ParseType(EltTy)) return true;
2100 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
2101 "expected end of sequential type"))
2106 return Error(SizeLoc, "zero element vector is illegal");
2107 if ((unsigned)Size != Size)
2108 return Error(SizeLoc, "size too large for vector");
2109 if (!VectorType::isValidElementType(EltTy))
2110 return Error(TypeLoc, "invalid vector element type");
2111 Result = VectorType::get(EltTy, unsigned(Size));
2113 if (!ArrayType::isValidElementType(EltTy))
2114 return Error(TypeLoc, "invalid array element type");
2115 Result = ArrayType::get(EltTy, Size);
2120 //===----------------------------------------------------------------------===//
2121 // Function Semantic Analysis.
2122 //===----------------------------------------------------------------------===//
2124 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
2126 : P(p), F(f), FunctionNumber(functionNumber) {
2128 // Insert unnamed arguments into the NumberedVals list.
2129 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
2132 NumberedVals.push_back(AI);
2135 LLParser::PerFunctionState::~PerFunctionState() {
2136 // If there were any forward referenced non-basicblock values, delete them.
2137 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
2138 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
2139 if (!isa<BasicBlock>(I->second.first)) {
2140 I->second.first->replaceAllUsesWith(
2141 UndefValue::get(I->second.first->getType()));
2142 delete I->second.first;
2143 I->second.first = nullptr;
2146 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2147 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
2148 if (!isa<BasicBlock>(I->second.first)) {
2149 I->second.first->replaceAllUsesWith(
2150 UndefValue::get(I->second.first->getType()));
2151 delete I->second.first;
2152 I->second.first = nullptr;
2156 bool LLParser::PerFunctionState::FinishFunction() {
2157 if (!ForwardRefVals.empty())
2158 return P.Error(ForwardRefVals.begin()->second.second,
2159 "use of undefined value '%" + ForwardRefVals.begin()->first +
2161 if (!ForwardRefValIDs.empty())
2162 return P.Error(ForwardRefValIDs.begin()->second.second,
2163 "use of undefined value '%" +
2164 Twine(ForwardRefValIDs.begin()->first) + "'");
2169 /// GetVal - Get a value with the specified name or ID, creating a
2170 /// forward reference record if needed. This can return null if the value
2171 /// exists but does not have the right type.
2172 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
2173 Type *Ty, LocTy Loc) {
2174 // Look this name up in the normal function symbol table.
2175 Value *Val = F.getValueSymbolTable().lookup(Name);
2177 // If this is a forward reference for the value, see if we already created a
2178 // forward ref record.
2180 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2181 I = ForwardRefVals.find(Name);
2182 if (I != ForwardRefVals.end())
2183 Val = I->second.first;
2186 // If we have the value in the symbol table or fwd-ref table, return it.
2188 if (Val->getType() == Ty) return Val;
2189 if (Ty->isLabelTy())
2190 P.Error(Loc, "'%" + Name + "' is not a basic block");
2192 P.Error(Loc, "'%" + Name + "' defined with type '" +
2193 getTypeString(Val->getType()) + "'");
2197 // Don't make placeholders with invalid type.
2198 if (!Ty->isFirstClassType()) {
2199 P.Error(Loc, "invalid use of a non-first-class type");
2203 // Otherwise, create a new forward reference for this value and remember it.
2205 if (Ty->isLabelTy())
2206 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2208 FwdVal = new Argument(Ty, Name);
2210 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2214 Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty,
2216 // Look this name up in the normal function symbol table.
2217 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
2219 // If this is a forward reference for the value, see if we already created a
2220 // forward ref record.
2222 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2223 I = ForwardRefValIDs.find(ID);
2224 if (I != ForwardRefValIDs.end())
2225 Val = I->second.first;
2228 // If we have the value in the symbol table or fwd-ref table, return it.
2230 if (Val->getType() == Ty) return Val;
2231 if (Ty->isLabelTy())
2232 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
2234 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
2235 getTypeString(Val->getType()) + "'");
2239 if (!Ty->isFirstClassType()) {
2240 P.Error(Loc, "invalid use of a non-first-class type");
2244 // Otherwise, create a new forward reference for this value and remember it.
2246 if (Ty->isLabelTy())
2247 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2249 FwdVal = new Argument(Ty);
2251 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2255 /// SetInstName - After an instruction is parsed and inserted into its
2256 /// basic block, this installs its name.
2257 bool LLParser::PerFunctionState::SetInstName(int NameID,
2258 const std::string &NameStr,
2259 LocTy NameLoc, Instruction *Inst) {
2260 // If this instruction has void type, it cannot have a name or ID specified.
2261 if (Inst->getType()->isVoidTy()) {
2262 if (NameID != -1 || !NameStr.empty())
2263 return P.Error(NameLoc, "instructions returning void cannot have a name");
2267 // If this was a numbered instruction, verify that the instruction is the
2268 // expected value and resolve any forward references.
2269 if (NameStr.empty()) {
2270 // If neither a name nor an ID was specified, just use the next ID.
2272 NameID = NumberedVals.size();
2274 if (unsigned(NameID) != NumberedVals.size())
2275 return P.Error(NameLoc, "instruction expected to be numbered '%" +
2276 Twine(NumberedVals.size()) + "'");
2278 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
2279 ForwardRefValIDs.find(NameID);
2280 if (FI != ForwardRefValIDs.end()) {
2281 if (FI->second.first->getType() != Inst->getType())
2282 return P.Error(NameLoc, "instruction forward referenced with type '" +
2283 getTypeString(FI->second.first->getType()) + "'");
2284 FI->second.first->replaceAllUsesWith(Inst);
2285 delete FI->second.first;
2286 ForwardRefValIDs.erase(FI);
2289 NumberedVals.push_back(Inst);
2293 // Otherwise, the instruction had a name. Resolve forward refs and set it.
2294 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2295 FI = ForwardRefVals.find(NameStr);
2296 if (FI != ForwardRefVals.end()) {
2297 if (FI->second.first->getType() != Inst->getType())
2298 return P.Error(NameLoc, "instruction forward referenced with type '" +
2299 getTypeString(FI->second.first->getType()) + "'");
2300 FI->second.first->replaceAllUsesWith(Inst);
2301 delete FI->second.first;
2302 ForwardRefVals.erase(FI);
2305 // Set the name on the instruction.
2306 Inst->setName(NameStr);
2308 if (Inst->getName() != NameStr)
2309 return P.Error(NameLoc, "multiple definition of local value named '" +
2314 /// GetBB - Get a basic block with the specified name or ID, creating a
2315 /// forward reference record if needed.
2316 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2318 return dyn_cast_or_null<BasicBlock>(GetVal(Name,
2319 Type::getLabelTy(F.getContext()), Loc));
2322 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2323 return dyn_cast_or_null<BasicBlock>(GetVal(ID,
2324 Type::getLabelTy(F.getContext()), Loc));
2327 /// DefineBB - Define the specified basic block, which is either named or
2328 /// unnamed. If there is an error, this returns null otherwise it returns
2329 /// the block being defined.
2330 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2334 BB = GetBB(NumberedVals.size(), Loc);
2336 BB = GetBB(Name, Loc);
2337 if (!BB) return nullptr; // Already diagnosed error.
2339 // Move the block to the end of the function. Forward ref'd blocks are
2340 // inserted wherever they happen to be referenced.
2341 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2343 // Remove the block from forward ref sets.
2345 ForwardRefValIDs.erase(NumberedVals.size());
2346 NumberedVals.push_back(BB);
2348 // BB forward references are already in the function symbol table.
2349 ForwardRefVals.erase(Name);
2355 //===----------------------------------------------------------------------===//
2357 //===----------------------------------------------------------------------===//
2359 /// ParseValID - Parse an abstract value that doesn't necessarily have a
2360 /// type implied. For example, if we parse "4" we don't know what integer type
2361 /// it has. The value will later be combined with its type and checked for
2362 /// sanity. PFS is used to convert function-local operands of metadata (since
2363 /// metadata operands are not just parsed here but also converted to values).
2364 /// PFS can be null when we are not parsing metadata values inside a function.
2365 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2366 ID.Loc = Lex.getLoc();
2367 switch (Lex.getKind()) {
2368 default: return TokError("expected value token");
2369 case lltok::GlobalID: // @42
2370 ID.UIntVal = Lex.getUIntVal();
2371 ID.Kind = ValID::t_GlobalID;
2373 case lltok::GlobalVar: // @foo
2374 ID.StrVal = Lex.getStrVal();
2375 ID.Kind = ValID::t_GlobalName;
2377 case lltok::LocalVarID: // %42
2378 ID.UIntVal = Lex.getUIntVal();
2379 ID.Kind = ValID::t_LocalID;
2381 case lltok::LocalVar: // %foo
2382 ID.StrVal = Lex.getStrVal();
2383 ID.Kind = ValID::t_LocalName;
2386 ID.APSIntVal = Lex.getAPSIntVal();
2387 ID.Kind = ValID::t_APSInt;
2389 case lltok::APFloat:
2390 ID.APFloatVal = Lex.getAPFloatVal();
2391 ID.Kind = ValID::t_APFloat;
2393 case lltok::kw_true:
2394 ID.ConstantVal = ConstantInt::getTrue(Context);
2395 ID.Kind = ValID::t_Constant;
2397 case lltok::kw_false:
2398 ID.ConstantVal = ConstantInt::getFalse(Context);
2399 ID.Kind = ValID::t_Constant;
2401 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2402 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2403 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2405 case lltok::lbrace: {
2406 // ValID ::= '{' ConstVector '}'
2408 SmallVector<Constant*, 16> Elts;
2409 if (ParseGlobalValueVector(Elts) ||
2410 ParseToken(lltok::rbrace, "expected end of struct constant"))
2413 ID.ConstantStructElts = new Constant*[Elts.size()];
2414 ID.UIntVal = Elts.size();
2415 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2416 ID.Kind = ValID::t_ConstantStruct;
2420 // ValID ::= '<' ConstVector '>' --> Vector.
2421 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2423 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2425 SmallVector<Constant*, 16> Elts;
2426 LocTy FirstEltLoc = Lex.getLoc();
2427 if (ParseGlobalValueVector(Elts) ||
2429 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2430 ParseToken(lltok::greater, "expected end of constant"))
2433 if (isPackedStruct) {
2434 ID.ConstantStructElts = new Constant*[Elts.size()];
2435 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2436 ID.UIntVal = Elts.size();
2437 ID.Kind = ValID::t_PackedConstantStruct;
2442 return Error(ID.Loc, "constant vector must not be empty");
2444 if (!Elts[0]->getType()->isIntegerTy() &&
2445 !Elts[0]->getType()->isFloatingPointTy() &&
2446 !Elts[0]->getType()->isPointerTy())
2447 return Error(FirstEltLoc,
2448 "vector elements must have integer, pointer or floating point type");
2450 // Verify that all the vector elements have the same type.
2451 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2452 if (Elts[i]->getType() != Elts[0]->getType())
2453 return Error(FirstEltLoc,
2454 "vector element #" + Twine(i) +
2455 " is not of type '" + getTypeString(Elts[0]->getType()));
2457 ID.ConstantVal = ConstantVector::get(Elts);
2458 ID.Kind = ValID::t_Constant;
2461 case lltok::lsquare: { // Array Constant
2463 SmallVector<Constant*, 16> Elts;
2464 LocTy FirstEltLoc = Lex.getLoc();
2465 if (ParseGlobalValueVector(Elts) ||
2466 ParseToken(lltok::rsquare, "expected end of array constant"))
2469 // Handle empty element.
2471 // Use undef instead of an array because it's inconvenient to determine
2472 // the element type at this point, there being no elements to examine.
2473 ID.Kind = ValID::t_EmptyArray;
2477 if (!Elts[0]->getType()->isFirstClassType())
2478 return Error(FirstEltLoc, "invalid array element type: " +
2479 getTypeString(Elts[0]->getType()));
2481 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2483 // Verify all elements are correct type!
2484 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2485 if (Elts[i]->getType() != Elts[0]->getType())
2486 return Error(FirstEltLoc,
2487 "array element #" + Twine(i) +
2488 " is not of type '" + getTypeString(Elts[0]->getType()));
2491 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2492 ID.Kind = ValID::t_Constant;
2495 case lltok::kw_c: // c "foo"
2497 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2499 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2500 ID.Kind = ValID::t_Constant;
2503 case lltok::kw_asm: {
2504 // ValID ::= 'asm' SideEffect? AlignStack? IntelDialect? STRINGCONSTANT ','
2506 bool HasSideEffect, AlignStack, AsmDialect;
2508 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2509 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2510 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2511 ParseStringConstant(ID.StrVal) ||
2512 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2513 ParseToken(lltok::StringConstant, "expected constraint string"))
2515 ID.StrVal2 = Lex.getStrVal();
2516 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2517 (unsigned(AsmDialect)<<2);
2518 ID.Kind = ValID::t_InlineAsm;
2522 case lltok::kw_blockaddress: {
2523 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2528 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2530 ParseToken(lltok::comma, "expected comma in block address expression")||
2531 ParseValID(Label) ||
2532 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2535 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2536 return Error(Fn.Loc, "expected function name in blockaddress");
2537 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2538 return Error(Label.Loc, "expected basic block name in blockaddress");
2540 // Try to find the function (but skip it if it's forward-referenced).
2541 GlobalValue *GV = nullptr;
2542 if (Fn.Kind == ValID::t_GlobalID) {
2543 if (Fn.UIntVal < NumberedVals.size())
2544 GV = NumberedVals[Fn.UIntVal];
2545 } else if (!ForwardRefVals.count(Fn.StrVal)) {
2546 GV = M->getNamedValue(Fn.StrVal);
2548 Function *F = nullptr;
2550 // Confirm that it's actually a function with a definition.
2551 if (!isa<Function>(GV))
2552 return Error(Fn.Loc, "expected function name in blockaddress");
2553 F = cast<Function>(GV);
2554 if (F->isDeclaration())
2555 return Error(Fn.Loc, "cannot take blockaddress inside a declaration");
2559 // Make a global variable as a placeholder for this reference.
2560 GlobalValue *&FwdRef =
2561 ForwardRefBlockAddresses.insert(std::make_pair(
2563 std::map<ValID, GlobalValue *>()))
2564 .first->second.insert(std::make_pair(std::move(Label), nullptr))
2567 FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context), false,
2568 GlobalValue::InternalLinkage, nullptr, "");
2569 ID.ConstantVal = FwdRef;
2570 ID.Kind = ValID::t_Constant;
2574 // We found the function; now find the basic block. Don't use PFS, since we
2575 // might be inside a constant expression.
2577 if (BlockAddressPFS && F == &BlockAddressPFS->getFunction()) {
2578 if (Label.Kind == ValID::t_LocalID)
2579 BB = BlockAddressPFS->GetBB(Label.UIntVal, Label.Loc);
2581 BB = BlockAddressPFS->GetBB(Label.StrVal, Label.Loc);
2583 return Error(Label.Loc, "referenced value is not a basic block");
2585 if (Label.Kind == ValID::t_LocalID)
2586 return Error(Label.Loc, "cannot take address of numeric label after "
2587 "the function is defined");
2588 BB = dyn_cast_or_null<BasicBlock>(
2589 F->getValueSymbolTable().lookup(Label.StrVal));
2591 return Error(Label.Loc, "referenced value is not a basic block");
2594 ID.ConstantVal = BlockAddress::get(F, BB);
2595 ID.Kind = ValID::t_Constant;
2599 case lltok::kw_trunc:
2600 case lltok::kw_zext:
2601 case lltok::kw_sext:
2602 case lltok::kw_fptrunc:
2603 case lltok::kw_fpext:
2604 case lltok::kw_bitcast:
2605 case lltok::kw_addrspacecast:
2606 case lltok::kw_uitofp:
2607 case lltok::kw_sitofp:
2608 case lltok::kw_fptoui:
2609 case lltok::kw_fptosi:
2610 case lltok::kw_inttoptr:
2611 case lltok::kw_ptrtoint: {
2612 unsigned Opc = Lex.getUIntVal();
2613 Type *DestTy = nullptr;
2616 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2617 ParseGlobalTypeAndValue(SrcVal) ||
2618 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2619 ParseType(DestTy) ||
2620 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2622 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2623 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2624 getTypeString(SrcVal->getType()) + "' to '" +
2625 getTypeString(DestTy) + "'");
2626 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2628 ID.Kind = ValID::t_Constant;
2631 case lltok::kw_extractvalue: {
2634 SmallVector<unsigned, 4> Indices;
2635 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2636 ParseGlobalTypeAndValue(Val) ||
2637 ParseIndexList(Indices) ||
2638 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2641 if (!Val->getType()->isAggregateType())
2642 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2643 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
2644 return Error(ID.Loc, "invalid indices for extractvalue");
2645 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
2646 ID.Kind = ValID::t_Constant;
2649 case lltok::kw_insertvalue: {
2651 Constant *Val0, *Val1;
2652 SmallVector<unsigned, 4> Indices;
2653 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2654 ParseGlobalTypeAndValue(Val0) ||
2655 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2656 ParseGlobalTypeAndValue(Val1) ||
2657 ParseIndexList(Indices) ||
2658 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2660 if (!Val0->getType()->isAggregateType())
2661 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2663 ExtractValueInst::getIndexedType(Val0->getType(), Indices);
2665 return Error(ID.Loc, "invalid indices for insertvalue");
2666 if (IndexedType != Val1->getType())
2667 return Error(ID.Loc, "insertvalue operand and field disagree in type: '" +
2668 getTypeString(Val1->getType()) +
2669 "' instead of '" + getTypeString(IndexedType) +
2671 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
2672 ID.Kind = ValID::t_Constant;
2675 case lltok::kw_icmp:
2676 case lltok::kw_fcmp: {
2677 unsigned PredVal, Opc = Lex.getUIntVal();
2678 Constant *Val0, *Val1;
2680 if (ParseCmpPredicate(PredVal, Opc) ||
2681 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2682 ParseGlobalTypeAndValue(Val0) ||
2683 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2684 ParseGlobalTypeAndValue(Val1) ||
2685 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2688 if (Val0->getType() != Val1->getType())
2689 return Error(ID.Loc, "compare operands must have the same type");
2691 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2693 if (Opc == Instruction::FCmp) {
2694 if (!Val0->getType()->isFPOrFPVectorTy())
2695 return Error(ID.Loc, "fcmp requires floating point operands");
2696 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2698 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2699 if (!Val0->getType()->isIntOrIntVectorTy() &&
2700 !Val0->getType()->getScalarType()->isPointerTy())
2701 return Error(ID.Loc, "icmp requires pointer or integer operands");
2702 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2704 ID.Kind = ValID::t_Constant;
2708 // Binary Operators.
2710 case lltok::kw_fadd:
2712 case lltok::kw_fsub:
2714 case lltok::kw_fmul:
2715 case lltok::kw_udiv:
2716 case lltok::kw_sdiv:
2717 case lltok::kw_fdiv:
2718 case lltok::kw_urem:
2719 case lltok::kw_srem:
2720 case lltok::kw_frem:
2722 case lltok::kw_lshr:
2723 case lltok::kw_ashr: {
2727 unsigned Opc = Lex.getUIntVal();
2728 Constant *Val0, *Val1;
2730 LocTy ModifierLoc = Lex.getLoc();
2731 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
2732 Opc == Instruction::Mul || Opc == Instruction::Shl) {
2733 if (EatIfPresent(lltok::kw_nuw))
2735 if (EatIfPresent(lltok::kw_nsw)) {
2737 if (EatIfPresent(lltok::kw_nuw))
2740 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
2741 Opc == Instruction::LShr || Opc == Instruction::AShr) {
2742 if (EatIfPresent(lltok::kw_exact))
2745 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2746 ParseGlobalTypeAndValue(Val0) ||
2747 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2748 ParseGlobalTypeAndValue(Val1) ||
2749 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2751 if (Val0->getType() != Val1->getType())
2752 return Error(ID.Loc, "operands of constexpr must have same type");
2753 if (!Val0->getType()->isIntOrIntVectorTy()) {
2755 return Error(ModifierLoc, "nuw only applies to integer operations");
2757 return Error(ModifierLoc, "nsw only applies to integer operations");
2759 // Check that the type is valid for the operator.
2761 case Instruction::Add:
2762 case Instruction::Sub:
2763 case Instruction::Mul:
2764 case Instruction::UDiv:
2765 case Instruction::SDiv:
2766 case Instruction::URem:
2767 case Instruction::SRem:
2768 case Instruction::Shl:
2769 case Instruction::AShr:
2770 case Instruction::LShr:
2771 if (!Val0->getType()->isIntOrIntVectorTy())
2772 return Error(ID.Loc, "constexpr requires integer operands");
2774 case Instruction::FAdd:
2775 case Instruction::FSub:
2776 case Instruction::FMul:
2777 case Instruction::FDiv:
2778 case Instruction::FRem:
2779 if (!Val0->getType()->isFPOrFPVectorTy())
2780 return Error(ID.Loc, "constexpr requires fp operands");
2782 default: llvm_unreachable("Unknown binary operator!");
2785 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2786 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2787 if (Exact) Flags |= PossiblyExactOperator::IsExact;
2788 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2790 ID.Kind = ValID::t_Constant;
2794 // Logical Operations
2797 case lltok::kw_xor: {
2798 unsigned Opc = Lex.getUIntVal();
2799 Constant *Val0, *Val1;
2801 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2802 ParseGlobalTypeAndValue(Val0) ||
2803 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2804 ParseGlobalTypeAndValue(Val1) ||
2805 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2807 if (Val0->getType() != Val1->getType())
2808 return Error(ID.Loc, "operands of constexpr must have same type");
2809 if (!Val0->getType()->isIntOrIntVectorTy())
2810 return Error(ID.Loc,
2811 "constexpr requires integer or integer vector operands");
2812 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2813 ID.Kind = ValID::t_Constant;
2817 case lltok::kw_getelementptr:
2818 case lltok::kw_shufflevector:
2819 case lltok::kw_insertelement:
2820 case lltok::kw_extractelement:
2821 case lltok::kw_select: {
2822 unsigned Opc = Lex.getUIntVal();
2823 SmallVector<Constant*, 16> Elts;
2824 bool InBounds = false;
2828 if (Opc == Instruction::GetElementPtr)
2829 InBounds = EatIfPresent(lltok::kw_inbounds);
2831 if (ParseToken(lltok::lparen, "expected '(' in constantexpr"))
2834 LocTy ExplicitTypeLoc = Lex.getLoc();
2835 if (Opc == Instruction::GetElementPtr) {
2836 if (ParseType(Ty) ||
2837 ParseToken(lltok::comma, "expected comma after getelementptr's type"))
2841 if (ParseGlobalValueVector(Elts) ||
2842 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2845 if (Opc == Instruction::GetElementPtr) {
2846 if (Elts.size() == 0 ||
2847 !Elts[0]->getType()->getScalarType()->isPointerTy())
2848 return Error(ID.Loc, "base of getelementptr must be a pointer");
2850 Type *BaseType = Elts[0]->getType();
2851 auto *BasePointerType = cast<PointerType>(BaseType->getScalarType());
2852 if (Ty != BasePointerType->getElementType())
2855 "explicit pointee type doesn't match operand's pointee type");
2857 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
2858 for (Constant *Val : Indices) {
2859 Type *ValTy = Val->getType();
2860 if (!ValTy->getScalarType()->isIntegerTy())
2861 return Error(ID.Loc, "getelementptr index must be an integer");
2862 if (ValTy->isVectorTy() != BaseType->isVectorTy())
2863 return Error(ID.Loc, "getelementptr index type missmatch");
2864 if (ValTy->isVectorTy()) {
2865 unsigned ValNumEl = cast<VectorType>(ValTy)->getNumElements();
2866 unsigned PtrNumEl = cast<VectorType>(BaseType)->getNumElements();
2867 if (ValNumEl != PtrNumEl)
2870 "getelementptr vector index has a wrong number of elements");
2874 SmallPtrSet<const Type*, 4> Visited;
2875 if (!Indices.empty() && !Ty->isSized(&Visited))
2876 return Error(ID.Loc, "base element of getelementptr must be sized");
2878 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
2879 return Error(ID.Loc, "invalid getelementptr indices");
2881 ConstantExpr::getGetElementPtr(Ty, Elts[0], Indices, InBounds);
2882 } else if (Opc == Instruction::Select) {
2883 if (Elts.size() != 3)
2884 return Error(ID.Loc, "expected three operands to select");
2885 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2887 return Error(ID.Loc, Reason);
2888 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2889 } else if (Opc == Instruction::ShuffleVector) {
2890 if (Elts.size() != 3)
2891 return Error(ID.Loc, "expected three operands to shufflevector");
2892 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2893 return Error(ID.Loc, "invalid operands to shufflevector");
2895 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2896 } else if (Opc == Instruction::ExtractElement) {
2897 if (Elts.size() != 2)
2898 return Error(ID.Loc, "expected two operands to extractelement");
2899 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2900 return Error(ID.Loc, "invalid extractelement operands");
2901 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2903 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2904 if (Elts.size() != 3)
2905 return Error(ID.Loc, "expected three operands to insertelement");
2906 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2907 return Error(ID.Loc, "invalid insertelement operands");
2909 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2912 ID.Kind = ValID::t_Constant;
2921 /// ParseGlobalValue - Parse a global value with the specified type.
2922 bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
2926 bool Parsed = ParseValID(ID) ||
2927 ConvertValIDToValue(Ty, ID, V, nullptr);
2928 if (V && !(C = dyn_cast<Constant>(V)))
2929 return Error(ID.Loc, "global values must be constants");
2933 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2935 return ParseType(Ty) ||
2936 ParseGlobalValue(Ty, V);
2939 bool LLParser::parseOptionalComdat(StringRef GlobalName, Comdat *&C) {
2942 LocTy KwLoc = Lex.getLoc();
2943 if (!EatIfPresent(lltok::kw_comdat))
2946 if (EatIfPresent(lltok::lparen)) {
2947 if (Lex.getKind() != lltok::ComdatVar)
2948 return TokError("expected comdat variable");
2949 C = getComdat(Lex.getStrVal(), Lex.getLoc());
2951 if (ParseToken(lltok::rparen, "expected ')' after comdat var"))
2954 if (GlobalName.empty())
2955 return TokError("comdat cannot be unnamed");
2956 C = getComdat(GlobalName, KwLoc);
2962 /// ParseGlobalValueVector
2964 /// ::= TypeAndValue (',' TypeAndValue)*
2965 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant *> &Elts) {
2967 if (Lex.getKind() == lltok::rbrace ||
2968 Lex.getKind() == lltok::rsquare ||
2969 Lex.getKind() == lltok::greater ||
2970 Lex.getKind() == lltok::rparen)
2974 if (ParseGlobalTypeAndValue(C)) return true;
2977 while (EatIfPresent(lltok::comma)) {
2978 if (ParseGlobalTypeAndValue(C)) return true;
2985 bool LLParser::ParseMDTuple(MDNode *&MD, bool IsDistinct) {
2986 SmallVector<Metadata *, 16> Elts;
2987 if (ParseMDNodeVector(Elts))
2990 MD = (IsDistinct ? MDTuple::getDistinct : MDTuple::get)(Context, Elts);
2997 /// ::= !DILocation(...)
2998 bool LLParser::ParseMDNode(MDNode *&N) {
2999 if (Lex.getKind() == lltok::MetadataVar)
3000 return ParseSpecializedMDNode(N);
3002 return ParseToken(lltok::exclaim, "expected '!' here") ||
3006 bool LLParser::ParseMDNodeTail(MDNode *&N) {
3008 if (Lex.getKind() == lltok::lbrace)
3009 return ParseMDTuple(N);
3012 return ParseMDNodeID(N);
3017 /// Structure to represent an optional metadata field.
3018 template <class FieldTy> struct MDFieldImpl {
3019 typedef MDFieldImpl ImplTy;
3023 void assign(FieldTy Val) {
3025 this->Val = std::move(Val);
3028 explicit MDFieldImpl(FieldTy Default)
3029 : Val(std::move(Default)), Seen(false) {}
3032 struct MDUnsignedField : public MDFieldImpl<uint64_t> {
3035 MDUnsignedField(uint64_t Default = 0, uint64_t Max = UINT64_MAX)
3036 : ImplTy(Default), Max(Max) {}
3038 struct LineField : public MDUnsignedField {
3039 LineField() : MDUnsignedField(0, UINT32_MAX) {}
3041 struct ColumnField : public MDUnsignedField {
3042 ColumnField() : MDUnsignedField(0, UINT16_MAX) {}
3044 struct DwarfTagField : public MDUnsignedField {
3045 DwarfTagField() : MDUnsignedField(0, dwarf::DW_TAG_hi_user) {}
3046 DwarfTagField(dwarf::Tag DefaultTag)
3047 : MDUnsignedField(DefaultTag, dwarf::DW_TAG_hi_user) {}
3049 struct DwarfAttEncodingField : public MDUnsignedField {
3050 DwarfAttEncodingField() : MDUnsignedField(0, dwarf::DW_ATE_hi_user) {}
3052 struct DwarfVirtualityField : public MDUnsignedField {
3053 DwarfVirtualityField() : MDUnsignedField(0, dwarf::DW_VIRTUALITY_max) {}
3055 struct DwarfLangField : public MDUnsignedField {
3056 DwarfLangField() : MDUnsignedField(0, dwarf::DW_LANG_hi_user) {}
3059 struct DIFlagField : public MDUnsignedField {
3060 DIFlagField() : MDUnsignedField(0, UINT32_MAX) {}
3063 struct MDSignedField : public MDFieldImpl<int64_t> {
3067 MDSignedField(int64_t Default = 0)
3068 : ImplTy(Default), Min(INT64_MIN), Max(INT64_MAX) {}
3069 MDSignedField(int64_t Default, int64_t Min, int64_t Max)
3070 : ImplTy(Default), Min(Min), Max(Max) {}
3073 struct MDBoolField : public MDFieldImpl<bool> {
3074 MDBoolField(bool Default = false) : ImplTy(Default) {}
3076 struct MDField : public MDFieldImpl<Metadata *> {
3079 MDField(bool AllowNull = true) : ImplTy(nullptr), AllowNull(AllowNull) {}
3081 struct MDConstant : public MDFieldImpl<ConstantAsMetadata *> {
3082 MDConstant() : ImplTy(nullptr) {}
3084 struct MDStringField : public MDFieldImpl<MDString *> {
3086 MDStringField(bool AllowEmpty = true)
3087 : ImplTy(nullptr), AllowEmpty(AllowEmpty) {}
3089 struct MDFieldList : public MDFieldImpl<SmallVector<Metadata *, 4>> {
3090 MDFieldList() : ImplTy(SmallVector<Metadata *, 4>()) {}
3098 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3099 MDUnsignedField &Result) {
3100 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
3101 return TokError("expected unsigned integer");
3103 auto &U = Lex.getAPSIntVal();
3104 if (U.ugt(Result.Max))
3105 return TokError("value for '" + Name + "' too large, limit is " +
3107 Result.assign(U.getZExtValue());
3108 assert(Result.Val <= Result.Max && "Expected value in range");
3114 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, LineField &Result) {
3115 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3118 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, ColumnField &Result) {
3119 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3123 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfTagField &Result) {
3124 if (Lex.getKind() == lltok::APSInt)
3125 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3127 if (Lex.getKind() != lltok::DwarfTag)
3128 return TokError("expected DWARF tag");
3130 unsigned Tag = dwarf::getTag(Lex.getStrVal());
3131 if (Tag == dwarf::DW_TAG_invalid)
3132 return TokError("invalid DWARF tag" + Twine(" '") + Lex.getStrVal() + "'");
3133 assert(Tag <= Result.Max && "Expected valid DWARF tag");
3141 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3142 DwarfVirtualityField &Result) {
3143 if (Lex.getKind() == lltok::APSInt)
3144 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3146 if (Lex.getKind() != lltok::DwarfVirtuality)
3147 return TokError("expected DWARF virtuality code");
3149 unsigned Virtuality = dwarf::getVirtuality(Lex.getStrVal());
3151 return TokError("invalid DWARF virtuality code" + Twine(" '") +
3152 Lex.getStrVal() + "'");
3153 assert(Virtuality <= Result.Max && "Expected valid DWARF virtuality code");
3154 Result.assign(Virtuality);
3160 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfLangField &Result) {
3161 if (Lex.getKind() == lltok::APSInt)
3162 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3164 if (Lex.getKind() != lltok::DwarfLang)
3165 return TokError("expected DWARF language");
3167 unsigned Lang = dwarf::getLanguage(Lex.getStrVal());
3169 return TokError("invalid DWARF language" + Twine(" '") + Lex.getStrVal() +
3171 assert(Lang <= Result.Max && "Expected valid DWARF language");
3172 Result.assign(Lang);
3178 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3179 DwarfAttEncodingField &Result) {
3180 if (Lex.getKind() == lltok::APSInt)
3181 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3183 if (Lex.getKind() != lltok::DwarfAttEncoding)
3184 return TokError("expected DWARF type attribute encoding");
3186 unsigned Encoding = dwarf::getAttributeEncoding(Lex.getStrVal());
3188 return TokError("invalid DWARF type attribute encoding" + Twine(" '") +
3189 Lex.getStrVal() + "'");
3190 assert(Encoding <= Result.Max && "Expected valid DWARF language");
3191 Result.assign(Encoding);
3198 /// ::= DIFlagVector
3199 /// ::= DIFlagVector '|' DIFlagFwdDecl '|' uint32 '|' DIFlagPublic
3201 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DIFlagField &Result) {
3202 assert(Result.Max == UINT32_MAX && "Expected only 32-bits");
3204 // Parser for a single flag.
3205 auto parseFlag = [&](unsigned &Val) {
3206 if (Lex.getKind() == lltok::APSInt && !Lex.getAPSIntVal().isSigned())
3207 return ParseUInt32(Val);
3209 if (Lex.getKind() != lltok::DIFlag)
3210 return TokError("expected debug info flag");
3212 Val = DINode::getFlag(Lex.getStrVal());
3214 return TokError(Twine("invalid debug info flag flag '") +
3215 Lex.getStrVal() + "'");
3220 // Parse the flags and combine them together.
3221 unsigned Combined = 0;
3227 } while (EatIfPresent(lltok::bar));
3229 Result.assign(Combined);
3234 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3235 MDSignedField &Result) {
3236 if (Lex.getKind() != lltok::APSInt)
3237 return TokError("expected signed integer");
3239 auto &S = Lex.getAPSIntVal();
3241 return TokError("value for '" + Name + "' too small, limit is " +
3244 return TokError("value for '" + Name + "' too large, limit is " +
3246 Result.assign(S.getExtValue());
3247 assert(Result.Val >= Result.Min && "Expected value in range");
3248 assert(Result.Val <= Result.Max && "Expected value in range");
3254 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDBoolField &Result) {
3255 switch (Lex.getKind()) {
3257 return TokError("expected 'true' or 'false'");
3258 case lltok::kw_true:
3259 Result.assign(true);
3261 case lltok::kw_false:
3262 Result.assign(false);
3270 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDField &Result) {
3271 if (Lex.getKind() == lltok::kw_null) {
3272 if (!Result.AllowNull)
3273 return TokError("'" + Name + "' cannot be null");
3275 Result.assign(nullptr);
3280 if (ParseMetadata(MD, nullptr))
3288 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDConstant &Result) {
3290 if (ParseValueAsMetadata(MD, "expected constant", nullptr))
3293 Result.assign(cast<ConstantAsMetadata>(MD));
3298 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDStringField &Result) {
3299 LocTy ValueLoc = Lex.getLoc();
3301 if (ParseStringConstant(S))
3304 if (!Result.AllowEmpty && S.empty())
3305 return Error(ValueLoc, "'" + Name + "' cannot be empty");
3307 Result.assign(S.empty() ? nullptr : MDString::get(Context, S));
3312 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDFieldList &Result) {
3313 SmallVector<Metadata *, 4> MDs;
3314 if (ParseMDNodeVector(MDs))
3317 Result.assign(std::move(MDs));
3321 } // end namespace llvm
3323 template <class ParserTy>
3324 bool LLParser::ParseMDFieldsImplBody(ParserTy parseField) {
3326 if (Lex.getKind() != lltok::LabelStr)
3327 return TokError("expected field label here");
3331 } while (EatIfPresent(lltok::comma));
3336 template <class ParserTy>
3337 bool LLParser::ParseMDFieldsImpl(ParserTy parseField, LocTy &ClosingLoc) {
3338 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3341 if (ParseToken(lltok::lparen, "expected '(' here"))
3343 if (Lex.getKind() != lltok::rparen)
3344 if (ParseMDFieldsImplBody(parseField))
3347 ClosingLoc = Lex.getLoc();
3348 return ParseToken(lltok::rparen, "expected ')' here");
3351 template <class FieldTy>
3352 bool LLParser::ParseMDField(StringRef Name, FieldTy &Result) {
3354 return TokError("field '" + Name + "' cannot be specified more than once");
3356 LocTy Loc = Lex.getLoc();
3358 return ParseMDField(Loc, Name, Result);
3361 bool LLParser::ParseSpecializedMDNode(MDNode *&N, bool IsDistinct) {
3362 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3364 #define HANDLE_SPECIALIZED_MDNODE_LEAF(CLASS) \
3365 if (Lex.getStrVal() == #CLASS) \
3366 return Parse##CLASS(N, IsDistinct);
3367 #include "llvm/IR/Metadata.def"
3369 return TokError("expected metadata type");
3372 #define DECLARE_FIELD(NAME, TYPE, INIT) TYPE NAME INIT
3373 #define NOP_FIELD(NAME, TYPE, INIT)
3374 #define REQUIRE_FIELD(NAME, TYPE, INIT) \
3376 return Error(ClosingLoc, "missing required field '" #NAME "'");
3377 #define PARSE_MD_FIELD(NAME, TYPE, DEFAULT) \
3378 if (Lex.getStrVal() == #NAME) \
3379 return ParseMDField(#NAME, NAME);
3380 #define PARSE_MD_FIELDS() \
3381 VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) \
3384 if (ParseMDFieldsImpl([&]() -> bool { \
3385 VISIT_MD_FIELDS(PARSE_MD_FIELD, PARSE_MD_FIELD) \
3386 return TokError(Twine("invalid field '") + Lex.getStrVal() + "'"); \
3389 VISIT_MD_FIELDS(NOP_FIELD, REQUIRE_FIELD) \
3391 #define GET_OR_DISTINCT(CLASS, ARGS) \
3392 (IsDistinct ? CLASS::getDistinct ARGS : CLASS::get ARGS)
3394 /// ParseDILocationFields:
3395 /// ::= !DILocation(line: 43, column: 8, scope: !5, inlinedAt: !6)
3396 bool LLParser::ParseDILocation(MDNode *&Result, bool IsDistinct) {
3397 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3398 OPTIONAL(line, LineField, ); \
3399 OPTIONAL(column, ColumnField, ); \
3400 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3401 OPTIONAL(inlinedAt, MDField, );
3403 #undef VISIT_MD_FIELDS
3405 Result = GET_OR_DISTINCT(
3406 DILocation, (Context, line.Val, column.Val, scope.Val, inlinedAt.Val));
3410 /// ParseGenericDINode:
3411 /// ::= !GenericDINode(tag: 15, header: "...", operands: {...})
3412 bool LLParser::ParseGenericDINode(MDNode *&Result, bool IsDistinct) {
3413 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3414 REQUIRED(tag, DwarfTagField, ); \
3415 OPTIONAL(header, MDStringField, ); \
3416 OPTIONAL(operands, MDFieldList, );
3418 #undef VISIT_MD_FIELDS
3420 Result = GET_OR_DISTINCT(GenericDINode,
3421 (Context, tag.Val, header.Val, operands.Val));
3425 /// ParseDISubrange:
3426 /// ::= !DISubrange(count: 30, lowerBound: 2)
3427 bool LLParser::ParseDISubrange(MDNode *&Result, bool IsDistinct) {
3428 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3429 REQUIRED(count, MDSignedField, (-1, -1, INT64_MAX)); \
3430 OPTIONAL(lowerBound, MDSignedField, );
3432 #undef VISIT_MD_FIELDS
3434 Result = GET_OR_DISTINCT(DISubrange, (Context, count.Val, lowerBound.Val));
3438 /// ParseDIEnumerator:
3439 /// ::= !DIEnumerator(value: 30, name: "SomeKind")
3440 bool LLParser::ParseDIEnumerator(MDNode *&Result, bool IsDistinct) {
3441 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3442 REQUIRED(name, MDStringField, ); \
3443 REQUIRED(value, MDSignedField, );
3445 #undef VISIT_MD_FIELDS
3447 Result = GET_OR_DISTINCT(DIEnumerator, (Context, value.Val, name.Val));
3451 /// ParseDIBasicType:
3452 /// ::= !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32)
3453 bool LLParser::ParseDIBasicType(MDNode *&Result, bool IsDistinct) {
3454 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3455 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_base_type)); \
3456 OPTIONAL(name, MDStringField, ); \
3457 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3458 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3459 OPTIONAL(encoding, DwarfAttEncodingField, );
3461 #undef VISIT_MD_FIELDS
3463 Result = GET_OR_DISTINCT(DIBasicType, (Context, tag.Val, name.Val, size.Val,
3464 align.Val, encoding.Val));
3468 /// ParseDIDerivedType:
3469 /// ::= !DIDerivedType(tag: DW_TAG_pointer_type, name: "int", file: !0,
3470 /// line: 7, scope: !1, baseType: !2, size: 32,
3471 /// align: 32, offset: 0, flags: 0, extraData: !3)
3472 bool LLParser::ParseDIDerivedType(MDNode *&Result, bool IsDistinct) {
3473 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3474 REQUIRED(tag, DwarfTagField, ); \
3475 OPTIONAL(name, MDStringField, ); \
3476 OPTIONAL(file, MDField, ); \
3477 OPTIONAL(line, LineField, ); \
3478 OPTIONAL(scope, MDField, ); \
3479 REQUIRED(baseType, MDField, ); \
3480 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3481 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3482 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX)); \
3483 OPTIONAL(flags, DIFlagField, ); \
3484 OPTIONAL(extraData, MDField, );
3486 #undef VISIT_MD_FIELDS
3488 Result = GET_OR_DISTINCT(DIDerivedType,
3489 (Context, tag.Val, name.Val, file.Val, line.Val,
3490 scope.Val, baseType.Val, size.Val, align.Val,
3491 offset.Val, flags.Val, extraData.Val));
3495 bool LLParser::ParseDICompositeType(MDNode *&Result, bool IsDistinct) {
3496 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3497 REQUIRED(tag, DwarfTagField, ); \
3498 OPTIONAL(name, MDStringField, ); \
3499 OPTIONAL(file, MDField, ); \
3500 OPTIONAL(line, LineField, ); \
3501 OPTIONAL(scope, MDField, ); \
3502 OPTIONAL(baseType, MDField, ); \
3503 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3504 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3505 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX)); \
3506 OPTIONAL(flags, DIFlagField, ); \
3507 OPTIONAL(elements, MDField, ); \
3508 OPTIONAL(runtimeLang, DwarfLangField, ); \
3509 OPTIONAL(vtableHolder, MDField, ); \
3510 OPTIONAL(templateParams, MDField, ); \
3511 OPTIONAL(identifier, MDStringField, );
3513 #undef VISIT_MD_FIELDS
3515 Result = GET_OR_DISTINCT(
3517 (Context, tag.Val, name.Val, file.Val, line.Val, scope.Val, baseType.Val,
3518 size.Val, align.Val, offset.Val, flags.Val, elements.Val,
3519 runtimeLang.Val, vtableHolder.Val, templateParams.Val, identifier.Val));
3523 bool LLParser::ParseDISubroutineType(MDNode *&Result, bool IsDistinct) {
3524 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3525 OPTIONAL(flags, DIFlagField, ); \
3526 REQUIRED(types, MDField, );
3528 #undef VISIT_MD_FIELDS
3530 Result = GET_OR_DISTINCT(DISubroutineType, (Context, flags.Val, types.Val));
3534 /// ParseDIFileType:
3535 /// ::= !DIFileType(filename: "path/to/file", directory: "/path/to/dir")
3536 bool LLParser::ParseDIFile(MDNode *&Result, bool IsDistinct) {
3537 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3538 REQUIRED(filename, MDStringField, ); \
3539 REQUIRED(directory, MDStringField, );
3541 #undef VISIT_MD_FIELDS
3543 Result = GET_OR_DISTINCT(DIFile, (Context, filename.Val, directory.Val));
3547 /// ParseDICompileUnit:
3548 /// ::= !DICompileUnit(language: DW_LANG_C99, file: !0, producer: "clang",
3549 /// isOptimized: true, flags: "-O2", runtimeVersion: 1,
3550 /// splitDebugFilename: "abc.debug", emissionKind: 1,
3551 /// enums: !1, retainedTypes: !2, subprograms: !3,
3552 /// globals: !4, imports: !5)
3553 bool LLParser::ParseDICompileUnit(MDNode *&Result, bool IsDistinct) {
3554 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3555 REQUIRED(language, DwarfLangField, ); \
3556 REQUIRED(file, MDField, (/* AllowNull */ false)); \
3557 OPTIONAL(producer, MDStringField, ); \
3558 OPTIONAL(isOptimized, MDBoolField, ); \
3559 OPTIONAL(flags, MDStringField, ); \
3560 OPTIONAL(runtimeVersion, MDUnsignedField, (0, UINT32_MAX)); \
3561 OPTIONAL(splitDebugFilename, MDStringField, ); \
3562 OPTIONAL(emissionKind, MDUnsignedField, (0, UINT32_MAX)); \
3563 OPTIONAL(enums, MDField, ); \
3564 OPTIONAL(retainedTypes, MDField, ); \
3565 OPTIONAL(subprograms, MDField, ); \
3566 OPTIONAL(globals, MDField, ); \
3567 OPTIONAL(imports, MDField, );
3569 #undef VISIT_MD_FIELDS
3571 Result = GET_OR_DISTINCT(DICompileUnit,
3572 (Context, language.Val, file.Val, producer.Val,
3573 isOptimized.Val, flags.Val, runtimeVersion.Val,
3574 splitDebugFilename.Val, emissionKind.Val, enums.Val,
3575 retainedTypes.Val, subprograms.Val, globals.Val,
3580 /// ParseDISubprogram:
3581 /// ::= !DISubprogram(scope: !0, name: "foo", linkageName: "_Zfoo",
3582 /// file: !1, line: 7, type: !2, isLocal: false,
3583 /// isDefinition: true, scopeLine: 8, containingType: !3,
3584 /// virtuality: DW_VIRTUALTIY_pure_virtual,
3585 /// virtualIndex: 10, flags: 11,
3586 /// isOptimized: false, function: void ()* @_Z3foov,
3587 /// templateParams: !4, declaration: !5, variables: !6)
3588 bool LLParser::ParseDISubprogram(MDNode *&Result, bool IsDistinct) {
3589 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3590 OPTIONAL(scope, MDField, ); \
3591 OPTIONAL(name, MDStringField, ); \
3592 OPTIONAL(linkageName, MDStringField, ); \
3593 OPTIONAL(file, MDField, ); \
3594 OPTIONAL(line, LineField, ); \
3595 OPTIONAL(type, MDField, ); \
3596 OPTIONAL(isLocal, MDBoolField, ); \
3597 OPTIONAL(isDefinition, MDBoolField, (true)); \
3598 OPTIONAL(scopeLine, LineField, ); \
3599 OPTIONAL(containingType, MDField, ); \
3600 OPTIONAL(virtuality, DwarfVirtualityField, ); \
3601 OPTIONAL(virtualIndex, MDUnsignedField, (0, UINT32_MAX)); \
3602 OPTIONAL(flags, DIFlagField, ); \
3603 OPTIONAL(isOptimized, MDBoolField, ); \
3604 OPTIONAL(function, MDConstant, ); \
3605 OPTIONAL(templateParams, MDField, ); \
3606 OPTIONAL(declaration, MDField, ); \
3607 OPTIONAL(variables, MDField, );
3609 #undef VISIT_MD_FIELDS
3611 Result = GET_OR_DISTINCT(
3612 DISubprogram, (Context, scope.Val, name.Val, linkageName.Val, file.Val,
3613 line.Val, type.Val, isLocal.Val, isDefinition.Val,
3614 scopeLine.Val, containingType.Val, virtuality.Val,
3615 virtualIndex.Val, flags.Val, isOptimized.Val, function.Val,
3616 templateParams.Val, declaration.Val, variables.Val));
3620 /// ParseDILexicalBlock:
3621 /// ::= !DILexicalBlock(scope: !0, file: !2, line: 7, column: 9)
3622 bool LLParser::ParseDILexicalBlock(MDNode *&Result, bool IsDistinct) {
3623 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3624 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3625 OPTIONAL(file, MDField, ); \
3626 OPTIONAL(line, LineField, ); \
3627 OPTIONAL(column, ColumnField, );
3629 #undef VISIT_MD_FIELDS
3631 Result = GET_OR_DISTINCT(
3632 DILexicalBlock, (Context, scope.Val, file.Val, line.Val, column.Val));
3636 /// ParseDILexicalBlockFile:
3637 /// ::= !DILexicalBlockFile(scope: !0, file: !2, discriminator: 9)
3638 bool LLParser::ParseDILexicalBlockFile(MDNode *&Result, bool IsDistinct) {
3639 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3640 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3641 OPTIONAL(file, MDField, ); \
3642 REQUIRED(discriminator, MDUnsignedField, (0, UINT32_MAX));
3644 #undef VISIT_MD_FIELDS
3646 Result = GET_OR_DISTINCT(DILexicalBlockFile,
3647 (Context, scope.Val, file.Val, discriminator.Val));
3651 /// ParseDINamespace:
3652 /// ::= !DINamespace(scope: !0, file: !2, name: "SomeNamespace", line: 9)
3653 bool LLParser::ParseDINamespace(MDNode *&Result, bool IsDistinct) {
3654 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3655 REQUIRED(scope, MDField, ); \
3656 OPTIONAL(file, MDField, ); \
3657 OPTIONAL(name, MDStringField, ); \
3658 OPTIONAL(line, LineField, );
3660 #undef VISIT_MD_FIELDS
3662 Result = GET_OR_DISTINCT(DINamespace,
3663 (Context, scope.Val, file.Val, name.Val, line.Val));
3667 /// ParseDITemplateTypeParameter:
3668 /// ::= !DITemplateTypeParameter(name: "Ty", type: !1)
3669 bool LLParser::ParseDITemplateTypeParameter(MDNode *&Result, bool IsDistinct) {
3670 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3671 OPTIONAL(name, MDStringField, ); \
3672 REQUIRED(type, MDField, );
3674 #undef VISIT_MD_FIELDS
3677 GET_OR_DISTINCT(DITemplateTypeParameter, (Context, name.Val, type.Val));
3681 /// ParseDITemplateValueParameter:
3682 /// ::= !DITemplateValueParameter(tag: DW_TAG_template_value_parameter,
3683 /// name: "V", type: !1, value: i32 7)
3684 bool LLParser::ParseDITemplateValueParameter(MDNode *&Result, bool IsDistinct) {
3685 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3686 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_template_value_parameter)); \
3687 OPTIONAL(name, MDStringField, ); \
3688 OPTIONAL(type, MDField, ); \
3689 REQUIRED(value, MDField, );
3691 #undef VISIT_MD_FIELDS
3693 Result = GET_OR_DISTINCT(DITemplateValueParameter,
3694 (Context, tag.Val, name.Val, type.Val, value.Val));
3698 /// ParseDIGlobalVariable:
3699 /// ::= !DIGlobalVariable(scope: !0, name: "foo", linkageName: "foo",
3700 /// file: !1, line: 7, type: !2, isLocal: false,
3701 /// isDefinition: true, variable: i32* @foo,
3702 /// declaration: !3)
3703 bool LLParser::ParseDIGlobalVariable(MDNode *&Result, bool IsDistinct) {
3704 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3705 REQUIRED(name, MDStringField, (/* AllowEmpty */ false)); \
3706 OPTIONAL(scope, MDField, ); \
3707 OPTIONAL(linkageName, MDStringField, ); \
3708 OPTIONAL(file, MDField, ); \
3709 OPTIONAL(line, LineField, ); \
3710 OPTIONAL(type, MDField, ); \
3711 OPTIONAL(isLocal, MDBoolField, ); \
3712 OPTIONAL(isDefinition, MDBoolField, (true)); \
3713 OPTIONAL(variable, MDConstant, ); \
3714 OPTIONAL(declaration, MDField, );
3716 #undef VISIT_MD_FIELDS
3718 Result = GET_OR_DISTINCT(DIGlobalVariable,
3719 (Context, scope.Val, name.Val, linkageName.Val,
3720 file.Val, line.Val, type.Val, isLocal.Val,
3721 isDefinition.Val, variable.Val, declaration.Val));
3725 /// ParseDILocalVariable:
3726 /// ::= !DILocalVariable(tag: DW_TAG_arg_variable, scope: !0, name: "foo",
3727 /// file: !1, line: 7, type: !2, arg: 2, flags: 7)
3728 bool LLParser::ParseDILocalVariable(MDNode *&Result, bool IsDistinct) {
3729 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3730 REQUIRED(tag, DwarfTagField, ); \
3731 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3732 OPTIONAL(name, MDStringField, ); \
3733 OPTIONAL(file, MDField, ); \
3734 OPTIONAL(line, LineField, ); \
3735 OPTIONAL(type, MDField, ); \
3736 OPTIONAL(arg, MDUnsignedField, (0, UINT8_MAX)); \
3737 OPTIONAL(flags, DIFlagField, );
3739 #undef VISIT_MD_FIELDS
3741 Result = GET_OR_DISTINCT(DILocalVariable,
3742 (Context, tag.Val, scope.Val, name.Val, file.Val,
3743 line.Val, type.Val, arg.Val, flags.Val));
3747 /// ParseDIExpression:
3748 /// ::= !DIExpression(0, 7, -1)
3749 bool LLParser::ParseDIExpression(MDNode *&Result, bool IsDistinct) {
3750 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3753 if (ParseToken(lltok::lparen, "expected '(' here"))
3756 SmallVector<uint64_t, 8> Elements;
3757 if (Lex.getKind() != lltok::rparen)
3759 if (Lex.getKind() == lltok::DwarfOp) {
3760 if (unsigned Op = dwarf::getOperationEncoding(Lex.getStrVal())) {
3762 Elements.push_back(Op);
3765 return TokError(Twine("invalid DWARF op '") + Lex.getStrVal() + "'");
3768 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
3769 return TokError("expected unsigned integer");
3771 auto &U = Lex.getAPSIntVal();
3772 if (U.ugt(UINT64_MAX))
3773 return TokError("element too large, limit is " + Twine(UINT64_MAX));
3774 Elements.push_back(U.getZExtValue());
3776 } while (EatIfPresent(lltok::comma));
3778 if (ParseToken(lltok::rparen, "expected ')' here"))
3781 Result = GET_OR_DISTINCT(DIExpression, (Context, Elements));
3785 /// ParseDIObjCProperty:
3786 /// ::= !DIObjCProperty(name: "foo", file: !1, line: 7, setter: "setFoo",
3787 /// getter: "getFoo", attributes: 7, type: !2)
3788 bool LLParser::ParseDIObjCProperty(MDNode *&Result, bool IsDistinct) {
3789 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3790 OPTIONAL(name, MDStringField, ); \
3791 OPTIONAL(file, MDField, ); \
3792 OPTIONAL(line, LineField, ); \
3793 OPTIONAL(setter, MDStringField, ); \
3794 OPTIONAL(getter, MDStringField, ); \
3795 OPTIONAL(attributes, MDUnsignedField, (0, UINT32_MAX)); \
3796 OPTIONAL(type, MDField, );
3798 #undef VISIT_MD_FIELDS
3800 Result = GET_OR_DISTINCT(DIObjCProperty,
3801 (Context, name.Val, file.Val, line.Val, setter.Val,
3802 getter.Val, attributes.Val, type.Val));
3806 /// ParseDIImportedEntity:
3807 /// ::= !DIImportedEntity(tag: DW_TAG_imported_module, scope: !0, entity: !1,
3808 /// line: 7, name: "foo")
3809 bool LLParser::ParseDIImportedEntity(MDNode *&Result, bool IsDistinct) {
3810 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3811 REQUIRED(tag, DwarfTagField, ); \
3812 REQUIRED(scope, MDField, ); \
3813 OPTIONAL(entity, MDField, ); \
3814 OPTIONAL(line, LineField, ); \
3815 OPTIONAL(name, MDStringField, );
3817 #undef VISIT_MD_FIELDS
3819 Result = GET_OR_DISTINCT(DIImportedEntity, (Context, tag.Val, scope.Val,
3820 entity.Val, line.Val, name.Val));
3824 #undef PARSE_MD_FIELD
3826 #undef REQUIRE_FIELD
3827 #undef DECLARE_FIELD
3829 /// ParseMetadataAsValue
3830 /// ::= metadata i32 %local
3831 /// ::= metadata i32 @global
3832 /// ::= metadata i32 7
3834 /// ::= metadata !{...}
3835 /// ::= metadata !"string"
3836 bool LLParser::ParseMetadataAsValue(Value *&V, PerFunctionState &PFS) {
3837 // Note: the type 'metadata' has already been parsed.
3839 if (ParseMetadata(MD, &PFS))
3842 V = MetadataAsValue::get(Context, MD);
3846 /// ParseValueAsMetadata
3850 bool LLParser::ParseValueAsMetadata(Metadata *&MD, const Twine &TypeMsg,
3851 PerFunctionState *PFS) {
3854 if (ParseType(Ty, TypeMsg, Loc))
3856 if (Ty->isMetadataTy())
3857 return Error(Loc, "invalid metadata-value-metadata roundtrip");
3860 if (ParseValue(Ty, V, PFS))
3863 MD = ValueAsMetadata::get(V);
3874 /// ::= !DILocation(...)
3875 bool LLParser::ParseMetadata(Metadata *&MD, PerFunctionState *PFS) {
3876 if (Lex.getKind() == lltok::MetadataVar) {
3878 if (ParseSpecializedMDNode(N))
3886 if (Lex.getKind() != lltok::exclaim)
3887 return ParseValueAsMetadata(MD, "expected metadata operand", PFS);
3890 assert(Lex.getKind() == lltok::exclaim && "Expected '!' here");
3894 // ::= '!' STRINGCONSTANT
3895 if (Lex.getKind() == lltok::StringConstant) {
3897 if (ParseMDString(S))
3907 if (ParseMDNodeTail(N))
3914 //===----------------------------------------------------------------------===//
3915 // Function Parsing.
3916 //===----------------------------------------------------------------------===//
3918 bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
3919 PerFunctionState *PFS) {
3920 if (Ty->isFunctionTy())
3921 return Error(ID.Loc, "functions are not values, refer to them as pointers");
3924 case ValID::t_LocalID:
3925 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
3926 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
3927 return V == nullptr;
3928 case ValID::t_LocalName:
3929 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
3930 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
3931 return V == nullptr;
3932 case ValID::t_InlineAsm: {
3933 PointerType *PTy = dyn_cast<PointerType>(Ty);
3935 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : nullptr;
3936 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
3937 return Error(ID.Loc, "invalid type for inline asm constraint string");
3938 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1,
3939 (ID.UIntVal>>1)&1, (InlineAsm::AsmDialect(ID.UIntVal>>2)));
3942 case ValID::t_GlobalName:
3943 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
3944 return V == nullptr;
3945 case ValID::t_GlobalID:
3946 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
3947 return V == nullptr;
3948 case ValID::t_APSInt:
3949 if (!Ty->isIntegerTy())
3950 return Error(ID.Loc, "integer constant must have integer type");
3951 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
3952 V = ConstantInt::get(Context, ID.APSIntVal);
3954 case ValID::t_APFloat:
3955 if (!Ty->isFloatingPointTy() ||
3956 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
3957 return Error(ID.Loc, "floating point constant invalid for type");
3959 // The lexer has no type info, so builds all half, float, and double FP
3960 // constants as double. Fix this here. Long double does not need this.
3961 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble) {
3964 ID.APFloatVal.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven,
3966 else if (Ty->isFloatTy())
3967 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
3970 V = ConstantFP::get(Context, ID.APFloatVal);
3972 if (V->getType() != Ty)
3973 return Error(ID.Loc, "floating point constant does not have type '" +
3974 getTypeString(Ty) + "'");
3978 if (!Ty->isPointerTy())
3979 return Error(ID.Loc, "null must be a pointer type");
3980 V = ConstantPointerNull::get(cast<PointerType>(Ty));
3982 case ValID::t_Undef:
3983 // FIXME: LabelTy should not be a first-class type.
3984 if (!Ty->isFirstClassType() || Ty->isLabelTy())
3985 return Error(ID.Loc, "invalid type for undef constant");
3986 V = UndefValue::get(Ty);
3988 case ValID::t_EmptyArray:
3989 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
3990 return Error(ID.Loc, "invalid empty array initializer");
3991 V = UndefValue::get(Ty);
3994 // FIXME: LabelTy should not be a first-class type.
3995 if (!Ty->isFirstClassType() || Ty->isLabelTy())
3996 return Error(ID.Loc, "invalid type for null constant");
3997 V = Constant::getNullValue(Ty);
3999 case ValID::t_Constant:
4000 if (ID.ConstantVal->getType() != Ty)
4001 return Error(ID.Loc, "constant expression type mismatch");
4005 case ValID::t_ConstantStruct:
4006 case ValID::t_PackedConstantStruct:
4007 if (StructType *ST = dyn_cast<StructType>(Ty)) {
4008 if (ST->getNumElements() != ID.UIntVal)
4009 return Error(ID.Loc,
4010 "initializer with struct type has wrong # elements");
4011 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
4012 return Error(ID.Loc, "packed'ness of initializer and type don't match");
4014 // Verify that the elements are compatible with the structtype.
4015 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
4016 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
4017 return Error(ID.Loc, "element " + Twine(i) +
4018 " of struct initializer doesn't match struct element type");
4020 V = ConstantStruct::get(ST, makeArrayRef(ID.ConstantStructElts,
4023 return Error(ID.Loc, "constant expression type mismatch");
4026 llvm_unreachable("Invalid ValID");
4029 bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS) {
4032 return ParseValID(ID, PFS) ||
4033 ConvertValIDToValue(Ty, ID, V, PFS);
4036 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
4038 return ParseType(Ty) ||
4039 ParseValue(Ty, V, PFS);
4042 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
4043 PerFunctionState &PFS) {
4046 if (ParseTypeAndValue(V, PFS)) return true;
4047 if (!isa<BasicBlock>(V))
4048 return Error(Loc, "expected a basic block");
4049 BB = cast<BasicBlock>(V);
4055 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
4056 /// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
4057 /// OptionalAlign OptGC OptionalPrefix OptionalPrologue
4058 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
4059 // Parse the linkage.
4060 LocTy LinkageLoc = Lex.getLoc();
4063 unsigned Visibility;
4064 unsigned DLLStorageClass;
4065 AttrBuilder RetAttrs;
4067 Type *RetType = nullptr;
4068 LocTy RetTypeLoc = Lex.getLoc();
4069 if (ParseOptionalLinkage(Linkage) ||
4070 ParseOptionalVisibility(Visibility) ||
4071 ParseOptionalDLLStorageClass(DLLStorageClass) ||
4072 ParseOptionalCallingConv(CC) ||
4073 ParseOptionalReturnAttrs(RetAttrs) ||
4074 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
4077 // Verify that the linkage is ok.
4078 switch ((GlobalValue::LinkageTypes)Linkage) {
4079 case GlobalValue::ExternalLinkage:
4080 break; // always ok.
4081 case GlobalValue::ExternalWeakLinkage:
4083 return Error(LinkageLoc, "invalid linkage for function definition");
4085 case GlobalValue::PrivateLinkage:
4086 case GlobalValue::InternalLinkage:
4087 case GlobalValue::AvailableExternallyLinkage:
4088 case GlobalValue::LinkOnceAnyLinkage:
4089 case GlobalValue::LinkOnceODRLinkage:
4090 case GlobalValue::WeakAnyLinkage:
4091 case GlobalValue::WeakODRLinkage:
4093 return Error(LinkageLoc, "invalid linkage for function declaration");
4095 case GlobalValue::AppendingLinkage:
4096 case GlobalValue::CommonLinkage:
4097 return Error(LinkageLoc, "invalid function linkage type");
4100 if (!isValidVisibilityForLinkage(Visibility, Linkage))
4101 return Error(LinkageLoc,
4102 "symbol with local linkage must have default visibility");
4104 if (!FunctionType::isValidReturnType(RetType))
4105 return Error(RetTypeLoc, "invalid function return type");
4107 LocTy NameLoc = Lex.getLoc();
4109 std::string FunctionName;
4110 if (Lex.getKind() == lltok::GlobalVar) {
4111 FunctionName = Lex.getStrVal();
4112 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
4113 unsigned NameID = Lex.getUIntVal();
4115 if (NameID != NumberedVals.size())
4116 return TokError("function expected to be numbered '%" +
4117 Twine(NumberedVals.size()) + "'");
4119 return TokError("expected function name");
4124 if (Lex.getKind() != lltok::lparen)
4125 return TokError("expected '(' in function argument list");
4127 SmallVector<ArgInfo, 8> ArgList;
4129 AttrBuilder FuncAttrs;
4130 std::vector<unsigned> FwdRefAttrGrps;
4132 std::string Section;
4136 LocTy UnnamedAddrLoc;
4137 Constant *Prefix = nullptr;
4138 Constant *Prologue = nullptr;
4141 if (ParseArgumentList(ArgList, isVarArg) ||
4142 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
4144 ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false,
4146 (EatIfPresent(lltok::kw_section) &&
4147 ParseStringConstant(Section)) ||
4148 parseOptionalComdat(FunctionName, C) ||
4149 ParseOptionalAlignment(Alignment) ||
4150 (EatIfPresent(lltok::kw_gc) &&
4151 ParseStringConstant(GC)) ||
4152 (EatIfPresent(lltok::kw_prefix) &&
4153 ParseGlobalTypeAndValue(Prefix)) ||
4154 (EatIfPresent(lltok::kw_prologue) &&
4155 ParseGlobalTypeAndValue(Prologue)))
4158 if (FuncAttrs.contains(Attribute::Builtin))
4159 return Error(BuiltinLoc, "'builtin' attribute not valid on function");
4161 // If the alignment was parsed as an attribute, move to the alignment field.
4162 if (FuncAttrs.hasAlignmentAttr()) {
4163 Alignment = FuncAttrs.getAlignment();
4164 FuncAttrs.removeAttribute(Attribute::Alignment);
4167 // Okay, if we got here, the function is syntactically valid. Convert types
4168 // and do semantic checks.
4169 std::vector<Type*> ParamTypeList;
4170 SmallVector<AttributeSet, 8> Attrs;
4172 if (RetAttrs.hasAttributes())
4173 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4174 AttributeSet::ReturnIndex,
4177 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
4178 ParamTypeList.push_back(ArgList[i].Ty);
4179 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
4180 AttrBuilder B(ArgList[i].Attrs, i + 1);
4181 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
4185 if (FuncAttrs.hasAttributes())
4186 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4187 AttributeSet::FunctionIndex,
4190 AttributeSet PAL = AttributeSet::get(Context, Attrs);
4192 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
4193 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
4196 FunctionType::get(RetType, ParamTypeList, isVarArg);
4197 PointerType *PFT = PointerType::getUnqual(FT);
4200 if (!FunctionName.empty()) {
4201 // If this was a definition of a forward reference, remove the definition
4202 // from the forward reference table and fill in the forward ref.
4203 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
4204 ForwardRefVals.find(FunctionName);
4205 if (FRVI != ForwardRefVals.end()) {
4206 Fn = M->getFunction(FunctionName);
4208 return Error(FRVI->second.second, "invalid forward reference to "
4209 "function as global value!");
4210 if (Fn->getType() != PFT)
4211 return Error(FRVI->second.second, "invalid forward reference to "
4212 "function '" + FunctionName + "' with wrong type!");
4214 ForwardRefVals.erase(FRVI);
4215 } else if ((Fn = M->getFunction(FunctionName))) {
4216 // Reject redefinitions.
4217 return Error(NameLoc, "invalid redefinition of function '" +
4218 FunctionName + "'");
4219 } else if (M->getNamedValue(FunctionName)) {
4220 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
4224 // If this is a definition of a forward referenced function, make sure the
4226 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
4227 = ForwardRefValIDs.find(NumberedVals.size());
4228 if (I != ForwardRefValIDs.end()) {
4229 Fn = cast<Function>(I->second.first);
4230 if (Fn->getType() != PFT)
4231 return Error(NameLoc, "type of definition and forward reference of '@" +
4232 Twine(NumberedVals.size()) + "' disagree");
4233 ForwardRefValIDs.erase(I);
4238 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
4239 else // Move the forward-reference to the correct spot in the module.
4240 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
4242 if (FunctionName.empty())
4243 NumberedVals.push_back(Fn);
4245 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
4246 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
4247 Fn->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
4248 Fn->setCallingConv(CC);
4249 Fn->setAttributes(PAL);
4250 Fn->setUnnamedAddr(UnnamedAddr);
4251 Fn->setAlignment(Alignment);
4252 Fn->setSection(Section);
4254 if (!GC.empty()) Fn->setGC(GC.c_str());
4255 Fn->setPrefixData(Prefix);
4256 Fn->setPrologueData(Prologue);
4257 ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
4259 // Add all of the arguments we parsed to the function.
4260 Function::arg_iterator ArgIt = Fn->arg_begin();
4261 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
4262 // If the argument has a name, insert it into the argument symbol table.
4263 if (ArgList[i].Name.empty()) continue;
4265 // Set the name, if it conflicted, it will be auto-renamed.
4266 ArgIt->setName(ArgList[i].Name);
4268 if (ArgIt->getName() != ArgList[i].Name)
4269 return Error(ArgList[i].Loc, "redefinition of argument '%" +
4270 ArgList[i].Name + "'");
4276 // Check the declaration has no block address forward references.
4278 if (FunctionName.empty()) {
4279 ID.Kind = ValID::t_GlobalID;
4280 ID.UIntVal = NumberedVals.size() - 1;
4282 ID.Kind = ValID::t_GlobalName;
4283 ID.StrVal = FunctionName;
4285 auto Blocks = ForwardRefBlockAddresses.find(ID);
4286 if (Blocks != ForwardRefBlockAddresses.end())
4287 return Error(Blocks->first.Loc,
4288 "cannot take blockaddress inside a declaration");
4292 bool LLParser::PerFunctionState::resolveForwardRefBlockAddresses() {
4294 if (FunctionNumber == -1) {
4295 ID.Kind = ValID::t_GlobalName;
4296 ID.StrVal = F.getName();
4298 ID.Kind = ValID::t_GlobalID;
4299 ID.UIntVal = FunctionNumber;
4302 auto Blocks = P.ForwardRefBlockAddresses.find(ID);
4303 if (Blocks == P.ForwardRefBlockAddresses.end())
4306 for (const auto &I : Blocks->second) {
4307 const ValID &BBID = I.first;
4308 GlobalValue *GV = I.second;
4310 assert((BBID.Kind == ValID::t_LocalID || BBID.Kind == ValID::t_LocalName) &&
4311 "Expected local id or name");
4313 if (BBID.Kind == ValID::t_LocalName)
4314 BB = GetBB(BBID.StrVal, BBID.Loc);
4316 BB = GetBB(BBID.UIntVal, BBID.Loc);
4318 return P.Error(BBID.Loc, "referenced value is not a basic block");
4320 GV->replaceAllUsesWith(BlockAddress::get(&F, BB));
4321 GV->eraseFromParent();
4324 P.ForwardRefBlockAddresses.erase(Blocks);
4328 /// ParseFunctionBody
4329 /// ::= '{' BasicBlock+ UseListOrderDirective* '}'
4330 bool LLParser::ParseFunctionBody(Function &Fn) {
4331 if (Lex.getKind() != lltok::lbrace)
4332 return TokError("expected '{' in function body");
4333 Lex.Lex(); // eat the {.
4335 int FunctionNumber = -1;
4336 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
4338 PerFunctionState PFS(*this, Fn, FunctionNumber);
4340 // Resolve block addresses and allow basic blocks to be forward-declared
4341 // within this function.
4342 if (PFS.resolveForwardRefBlockAddresses())
4344 SaveAndRestore<PerFunctionState *> ScopeExit(BlockAddressPFS, &PFS);
4346 // We need at least one basic block.
4347 if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_uselistorder)
4348 return TokError("function body requires at least one basic block");
4350 while (Lex.getKind() != lltok::rbrace &&
4351 Lex.getKind() != lltok::kw_uselistorder)
4352 if (ParseBasicBlock(PFS)) return true;
4354 while (Lex.getKind() != lltok::rbrace)
4355 if (ParseUseListOrder(&PFS))
4361 // Verify function is ok.
4362 return PFS.FinishFunction();
4366 /// ::= LabelStr? Instruction*
4367 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
4368 // If this basic block starts out with a name, remember it.
4370 LocTy NameLoc = Lex.getLoc();
4371 if (Lex.getKind() == lltok::LabelStr) {
4372 Name = Lex.getStrVal();
4376 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
4378 return Error(NameLoc,
4379 "unable to create block named '" + Name + "'");
4381 std::string NameStr;
4383 // Parse the instructions in this block until we get a terminator.
4386 // This instruction may have three possibilities for a name: a) none
4387 // specified, b) name specified "%foo =", c) number specified: "%4 =".
4388 LocTy NameLoc = Lex.getLoc();
4392 if (Lex.getKind() == lltok::LocalVarID) {
4393 NameID = Lex.getUIntVal();
4395 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
4397 } else if (Lex.getKind() == lltok::LocalVar) {
4398 NameStr = Lex.getStrVal();
4400 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
4404 switch (ParseInstruction(Inst, BB, PFS)) {
4405 default: llvm_unreachable("Unknown ParseInstruction result!");
4406 case InstError: return true;
4408 BB->getInstList().push_back(Inst);
4410 // With a normal result, we check to see if the instruction is followed by
4411 // a comma and metadata.
4412 if (EatIfPresent(lltok::comma))
4413 if (ParseInstructionMetadata(*Inst))
4416 case InstExtraComma:
4417 BB->getInstList().push_back(Inst);
4419 // If the instruction parser ate an extra comma at the end of it, it
4420 // *must* be followed by metadata.
4421 if (ParseInstructionMetadata(*Inst))
4426 // Set the name on the instruction.
4427 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
4428 } while (!isa<TerminatorInst>(Inst));
4433 //===----------------------------------------------------------------------===//
4434 // Instruction Parsing.
4435 //===----------------------------------------------------------------------===//
4437 /// ParseInstruction - Parse one of the many different instructions.
4439 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
4440 PerFunctionState &PFS) {
4441 lltok::Kind Token = Lex.getKind();
4442 if (Token == lltok::Eof)
4443 return TokError("found end of file when expecting more instructions");
4444 LocTy Loc = Lex.getLoc();
4445 unsigned KeywordVal = Lex.getUIntVal();
4446 Lex.Lex(); // Eat the keyword.
4449 default: return Error(Loc, "expected instruction opcode");
4450 // Terminator Instructions.
4451 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
4452 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
4453 case lltok::kw_br: return ParseBr(Inst, PFS);
4454 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
4455 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
4456 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
4457 case lltok::kw_resume: return ParseResume(Inst, PFS);
4458 // Binary Operators.
4462 case lltok::kw_shl: {
4463 bool NUW = EatIfPresent(lltok::kw_nuw);
4464 bool NSW = EatIfPresent(lltok::kw_nsw);
4465 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
4467 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
4469 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
4470 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
4473 case lltok::kw_fadd:
4474 case lltok::kw_fsub:
4475 case lltok::kw_fmul:
4476 case lltok::kw_fdiv:
4477 case lltok::kw_frem: {
4478 FastMathFlags FMF = EatFastMathFlagsIfPresent();
4479 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
4483 Inst->setFastMathFlags(FMF);
4487 case lltok::kw_sdiv:
4488 case lltok::kw_udiv:
4489 case lltok::kw_lshr:
4490 case lltok::kw_ashr: {
4491 bool Exact = EatIfPresent(lltok::kw_exact);
4493 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
4494 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
4498 case lltok::kw_urem:
4499 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
4502 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
4503 case lltok::kw_icmp:
4504 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
4506 case lltok::kw_trunc:
4507 case lltok::kw_zext:
4508 case lltok::kw_sext:
4509 case lltok::kw_fptrunc:
4510 case lltok::kw_fpext:
4511 case lltok::kw_bitcast:
4512 case lltok::kw_addrspacecast:
4513 case lltok::kw_uitofp:
4514 case lltok::kw_sitofp:
4515 case lltok::kw_fptoui:
4516 case lltok::kw_fptosi:
4517 case lltok::kw_inttoptr:
4518 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
4520 case lltok::kw_select: return ParseSelect(Inst, PFS);
4521 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
4522 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
4523 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
4524 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
4525 case lltok::kw_phi: return ParsePHI(Inst, PFS);
4526 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
4528 case lltok::kw_call: return ParseCall(Inst, PFS, CallInst::TCK_None);
4529 case lltok::kw_tail: return ParseCall(Inst, PFS, CallInst::TCK_Tail);
4530 case lltok::kw_musttail: return ParseCall(Inst, PFS, CallInst::TCK_MustTail);
4532 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
4533 case lltok::kw_load: return ParseLoad(Inst, PFS);
4534 case lltok::kw_store: return ParseStore(Inst, PFS);
4535 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
4536 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
4537 case lltok::kw_fence: return ParseFence(Inst, PFS);
4538 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
4539 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
4540 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
4544 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
4545 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
4546 if (Opc == Instruction::FCmp) {
4547 switch (Lex.getKind()) {
4548 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
4549 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
4550 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
4551 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
4552 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
4553 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
4554 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
4555 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
4556 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
4557 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
4558 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
4559 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
4560 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
4561 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
4562 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
4563 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
4564 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
4567 switch (Lex.getKind()) {
4568 default: return TokError("expected icmp predicate (e.g. 'eq')");
4569 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
4570 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
4571 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
4572 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
4573 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
4574 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
4575 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
4576 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
4577 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
4578 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
4585 //===----------------------------------------------------------------------===//
4586 // Terminator Instructions.
4587 //===----------------------------------------------------------------------===//
4589 /// ParseRet - Parse a return instruction.
4590 /// ::= 'ret' void (',' !dbg, !1)*
4591 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
4592 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
4593 PerFunctionState &PFS) {
4594 SMLoc TypeLoc = Lex.getLoc();
4596 if (ParseType(Ty, true /*void allowed*/)) return true;
4598 Type *ResType = PFS.getFunction().getReturnType();
4600 if (Ty->isVoidTy()) {
4601 if (!ResType->isVoidTy())
4602 return Error(TypeLoc, "value doesn't match function result type '" +
4603 getTypeString(ResType) + "'");
4605 Inst = ReturnInst::Create(Context);
4610 if (ParseValue(Ty, RV, PFS)) return true;
4612 if (ResType != RV->getType())
4613 return Error(TypeLoc, "value doesn't match function result type '" +
4614 getTypeString(ResType) + "'");
4616 Inst = ReturnInst::Create(Context, RV);
4622 /// ::= 'br' TypeAndValue
4623 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
4624 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
4627 BasicBlock *Op1, *Op2;
4628 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
4630 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
4631 Inst = BranchInst::Create(BB);
4635 if (Op0->getType() != Type::getInt1Ty(Context))
4636 return Error(Loc, "branch condition must have 'i1' type");
4638 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
4639 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
4640 ParseToken(lltok::comma, "expected ',' after true destination") ||
4641 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
4644 Inst = BranchInst::Create(Op1, Op2, Op0);
4650 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
4652 /// ::= (TypeAndValue ',' TypeAndValue)*
4653 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
4654 LocTy CondLoc, BBLoc;
4656 BasicBlock *DefaultBB;
4657 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
4658 ParseToken(lltok::comma, "expected ',' after switch condition") ||
4659 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
4660 ParseToken(lltok::lsquare, "expected '[' with switch table"))
4663 if (!Cond->getType()->isIntegerTy())
4664 return Error(CondLoc, "switch condition must have integer type");
4666 // Parse the jump table pairs.
4667 SmallPtrSet<Value*, 32> SeenCases;
4668 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
4669 while (Lex.getKind() != lltok::rsquare) {
4673 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
4674 ParseToken(lltok::comma, "expected ',' after case value") ||
4675 ParseTypeAndBasicBlock(DestBB, PFS))
4678 if (!SeenCases.insert(Constant).second)
4679 return Error(CondLoc, "duplicate case value in switch");
4680 if (!isa<ConstantInt>(Constant))
4681 return Error(CondLoc, "case value is not a constant integer");
4683 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
4686 Lex.Lex(); // Eat the ']'.
4688 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
4689 for (unsigned i = 0, e = Table.size(); i != e; ++i)
4690 SI->addCase(Table[i].first, Table[i].second);
4697 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
4698 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
4701 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
4702 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
4703 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
4706 if (!Address->getType()->isPointerTy())
4707 return Error(AddrLoc, "indirectbr address must have pointer type");
4709 // Parse the destination list.
4710 SmallVector<BasicBlock*, 16> DestList;
4712 if (Lex.getKind() != lltok::rsquare) {
4714 if (ParseTypeAndBasicBlock(DestBB, PFS))
4716 DestList.push_back(DestBB);
4718 while (EatIfPresent(lltok::comma)) {
4719 if (ParseTypeAndBasicBlock(DestBB, PFS))
4721 DestList.push_back(DestBB);
4725 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
4728 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
4729 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
4730 IBI->addDestination(DestList[i]);
4737 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
4738 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
4739 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
4740 LocTy CallLoc = Lex.getLoc();
4741 AttrBuilder RetAttrs, FnAttrs;
4742 std::vector<unsigned> FwdRefAttrGrps;
4745 Type *RetType = nullptr;
4748 SmallVector<ParamInfo, 16> ArgList;
4750 BasicBlock *NormalBB, *UnwindBB;
4751 if (ParseOptionalCallingConv(CC) ||
4752 ParseOptionalReturnAttrs(RetAttrs) ||
4753 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
4754 ParseValID(CalleeID) ||
4755 ParseParameterList(ArgList, PFS) ||
4756 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
4758 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
4759 ParseTypeAndBasicBlock(NormalBB, PFS) ||
4760 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
4761 ParseTypeAndBasicBlock(UnwindBB, PFS))
4764 // If RetType is a non-function pointer type, then this is the short syntax
4765 // for the call, which means that RetType is just the return type. Infer the
4766 // rest of the function argument types from the arguments that are present.
4767 FunctionType *Ty = dyn_cast<FunctionType>(RetType);
4769 // Pull out the types of all of the arguments...
4770 std::vector<Type*> ParamTypes;
4771 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
4772 ParamTypes.push_back(ArgList[i].V->getType());
4774 if (!FunctionType::isValidReturnType(RetType))
4775 return Error(RetTypeLoc, "Invalid result type for LLVM function");
4777 Ty = FunctionType::get(RetType, ParamTypes, false);
4780 // Look up the callee.
4782 if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS))
4785 // Set up the Attribute for the function.
4786 SmallVector<AttributeSet, 8> Attrs;
4787 if (RetAttrs.hasAttributes())
4788 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4789 AttributeSet::ReturnIndex,
4792 SmallVector<Value*, 8> Args;
4794 // Loop through FunctionType's arguments and ensure they are specified
4795 // correctly. Also, gather any parameter attributes.
4796 FunctionType::param_iterator I = Ty->param_begin();
4797 FunctionType::param_iterator E = Ty->param_end();
4798 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
4799 Type *ExpectedTy = nullptr;
4802 } else if (!Ty->isVarArg()) {
4803 return Error(ArgList[i].Loc, "too many arguments specified");
4806 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
4807 return Error(ArgList[i].Loc, "argument is not of expected type '" +
4808 getTypeString(ExpectedTy) + "'");
4809 Args.push_back(ArgList[i].V);
4810 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
4811 AttrBuilder B(ArgList[i].Attrs, i + 1);
4812 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
4817 return Error(CallLoc, "not enough parameters specified for call");
4819 if (FnAttrs.hasAttributes()) {
4820 if (FnAttrs.hasAlignmentAttr())
4821 return Error(CallLoc, "invoke instructions may not have an alignment");
4823 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4824 AttributeSet::FunctionIndex,
4828 // Finish off the Attribute and check them
4829 AttributeSet PAL = AttributeSet::get(Context, Attrs);
4831 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB, Args);
4832 II->setCallingConv(CC);
4833 II->setAttributes(PAL);
4834 ForwardRefAttrGroups[II] = FwdRefAttrGrps;
4840 /// ::= 'resume' TypeAndValue
4841 bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
4842 Value *Exn; LocTy ExnLoc;
4843 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
4846 ResumeInst *RI = ResumeInst::Create(Exn);
4851 //===----------------------------------------------------------------------===//
4852 // Binary Operators.
4853 //===----------------------------------------------------------------------===//
4856 /// ::= ArithmeticOps TypeAndValue ',' Value
4858 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
4859 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
4860 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
4861 unsigned Opc, unsigned OperandType) {
4862 LocTy Loc; Value *LHS, *RHS;
4863 if (ParseTypeAndValue(LHS, Loc, PFS) ||
4864 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
4865 ParseValue(LHS->getType(), RHS, PFS))
4869 switch (OperandType) {
4870 default: llvm_unreachable("Unknown operand type!");
4871 case 0: // int or FP.
4872 Valid = LHS->getType()->isIntOrIntVectorTy() ||
4873 LHS->getType()->isFPOrFPVectorTy();
4875 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
4876 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
4880 return Error(Loc, "invalid operand type for instruction");
4882 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
4887 /// ::= ArithmeticOps TypeAndValue ',' Value {
4888 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
4890 LocTy Loc; Value *LHS, *RHS;
4891 if (ParseTypeAndValue(LHS, Loc, PFS) ||
4892 ParseToken(lltok::comma, "expected ',' in logical operation") ||
4893 ParseValue(LHS->getType(), RHS, PFS))
4896 if (!LHS->getType()->isIntOrIntVectorTy())
4897 return Error(Loc,"instruction requires integer or integer vector operands");
4899 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
4905 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
4906 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
4907 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
4909 // Parse the integer/fp comparison predicate.
4913 if (ParseCmpPredicate(Pred, Opc) ||
4914 ParseTypeAndValue(LHS, Loc, PFS) ||
4915 ParseToken(lltok::comma, "expected ',' after compare value") ||
4916 ParseValue(LHS->getType(), RHS, PFS))
4919 if (Opc == Instruction::FCmp) {
4920 if (!LHS->getType()->isFPOrFPVectorTy())
4921 return Error(Loc, "fcmp requires floating point operands");
4922 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
4924 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
4925 if (!LHS->getType()->isIntOrIntVectorTy() &&
4926 !LHS->getType()->getScalarType()->isPointerTy())
4927 return Error(Loc, "icmp requires integer operands");
4928 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
4933 //===----------------------------------------------------------------------===//
4934 // Other Instructions.
4935 //===----------------------------------------------------------------------===//
4939 /// ::= CastOpc TypeAndValue 'to' Type
4940 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
4944 Type *DestTy = nullptr;
4945 if (ParseTypeAndValue(Op, Loc, PFS) ||
4946 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
4950 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
4951 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
4952 return Error(Loc, "invalid cast opcode for cast from '" +
4953 getTypeString(Op->getType()) + "' to '" +
4954 getTypeString(DestTy) + "'");
4956 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
4961 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
4962 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
4964 Value *Op0, *Op1, *Op2;
4965 if (ParseTypeAndValue(Op0, Loc, PFS) ||
4966 ParseToken(lltok::comma, "expected ',' after select condition") ||
4967 ParseTypeAndValue(Op1, PFS) ||
4968 ParseToken(lltok::comma, "expected ',' after select value") ||
4969 ParseTypeAndValue(Op2, PFS))
4972 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
4973 return Error(Loc, Reason);
4975 Inst = SelectInst::Create(Op0, Op1, Op2);
4980 /// ::= 'va_arg' TypeAndValue ',' Type
4981 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
4983 Type *EltTy = nullptr;
4985 if (ParseTypeAndValue(Op, PFS) ||
4986 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
4987 ParseType(EltTy, TypeLoc))
4990 if (!EltTy->isFirstClassType())
4991 return Error(TypeLoc, "va_arg requires operand with first class type");
4993 Inst = new VAArgInst(Op, EltTy);
4997 /// ParseExtractElement
4998 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
4999 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
5002 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5003 ParseToken(lltok::comma, "expected ',' after extract value") ||
5004 ParseTypeAndValue(Op1, PFS))
5007 if (!ExtractElementInst::isValidOperands(Op0, Op1))
5008 return Error(Loc, "invalid extractelement operands");
5010 Inst = ExtractElementInst::Create(Op0, Op1);
5014 /// ParseInsertElement
5015 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5016 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
5018 Value *Op0, *Op1, *Op2;
5019 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5020 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5021 ParseTypeAndValue(Op1, PFS) ||
5022 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5023 ParseTypeAndValue(Op2, PFS))
5026 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
5027 return Error(Loc, "invalid insertelement operands");
5029 Inst = InsertElementInst::Create(Op0, Op1, Op2);
5033 /// ParseShuffleVector
5034 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5035 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
5037 Value *Op0, *Op1, *Op2;
5038 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5039 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
5040 ParseTypeAndValue(Op1, PFS) ||
5041 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
5042 ParseTypeAndValue(Op2, PFS))
5045 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
5046 return Error(Loc, "invalid shufflevector operands");
5048 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
5053 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
5054 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
5055 Type *Ty = nullptr; LocTy TypeLoc;
5058 if (ParseType(Ty, TypeLoc) ||
5059 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
5060 ParseValue(Ty, Op0, PFS) ||
5061 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5062 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
5063 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
5066 bool AteExtraComma = false;
5067 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
5069 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
5071 if (!EatIfPresent(lltok::comma))
5074 if (Lex.getKind() == lltok::MetadataVar) {
5075 AteExtraComma = true;
5079 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
5080 ParseValue(Ty, Op0, PFS) ||
5081 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5082 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
5083 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
5087 if (!Ty->isFirstClassType())
5088 return Error(TypeLoc, "phi node must have first class type");
5090 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
5091 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
5092 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
5094 return AteExtraComma ? InstExtraComma : InstNormal;
5098 /// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
5100 /// ::= 'catch' TypeAndValue
5102 /// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
5103 bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
5104 Type *Ty = nullptr; LocTy TyLoc;
5105 Value *PersFn; LocTy PersFnLoc;
5107 if (ParseType(Ty, TyLoc) ||
5108 ParseToken(lltok::kw_personality, "expected 'personality'") ||
5109 ParseTypeAndValue(PersFn, PersFnLoc, PFS))
5112 std::unique_ptr<LandingPadInst> LP(LandingPadInst::Create(Ty, PersFn, 0));
5113 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
5115 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
5116 LandingPadInst::ClauseType CT;
5117 if (EatIfPresent(lltok::kw_catch))
5118 CT = LandingPadInst::Catch;
5119 else if (EatIfPresent(lltok::kw_filter))
5120 CT = LandingPadInst::Filter;
5122 return TokError("expected 'catch' or 'filter' clause type");
5126 if (ParseTypeAndValue(V, VLoc, PFS))
5129 // A 'catch' type expects a non-array constant. A filter clause expects an
5131 if (CT == LandingPadInst::Catch) {
5132 if (isa<ArrayType>(V->getType()))
5133 Error(VLoc, "'catch' clause has an invalid type");
5135 if (!isa<ArrayType>(V->getType()))
5136 Error(VLoc, "'filter' clause has an invalid type");
5139 Constant *CV = dyn_cast<Constant>(V);
5141 return Error(VLoc, "clause argument must be a constant");
5145 Inst = LP.release();
5150 /// ::= 'call' OptionalCallingConv OptionalAttrs Type Value
5151 /// ParameterList OptionalAttrs
5152 /// ::= 'tail' 'call' OptionalCallingConv OptionalAttrs Type Value
5153 /// ParameterList OptionalAttrs
5154 /// ::= 'musttail' 'call' OptionalCallingConv OptionalAttrs Type Value
5155 /// ParameterList OptionalAttrs
5156 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
5157 CallInst::TailCallKind TCK) {
5158 AttrBuilder RetAttrs, FnAttrs;
5159 std::vector<unsigned> FwdRefAttrGrps;
5162 Type *RetType = nullptr;
5165 SmallVector<ParamInfo, 16> ArgList;
5166 LocTy CallLoc = Lex.getLoc();
5168 if ((TCK != CallInst::TCK_None &&
5169 ParseToken(lltok::kw_call, "expected 'tail call'")) ||
5170 ParseOptionalCallingConv(CC) ||
5171 ParseOptionalReturnAttrs(RetAttrs) ||
5172 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
5173 ParseValID(CalleeID) ||
5174 ParseParameterList(ArgList, PFS, TCK == CallInst::TCK_MustTail,
5175 PFS.getFunction().isVarArg()) ||
5176 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
5180 // If RetType is a non-function pointer type, then this is the short syntax
5181 // for the call, which means that RetType is just the return type. Infer the
5182 // rest of the function argument types from the arguments that are present.
5183 FunctionType *Ty = dyn_cast<FunctionType>(RetType);
5185 // Pull out the types of all of the arguments...
5186 std::vector<Type*> ParamTypes;
5187 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
5188 ParamTypes.push_back(ArgList[i].V->getType());
5190 if (!FunctionType::isValidReturnType(RetType))
5191 return Error(RetTypeLoc, "Invalid result type for LLVM function");
5193 Ty = FunctionType::get(RetType, ParamTypes, false);
5196 // Look up the callee.
5198 if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS))
5201 // Set up the Attribute for the function.
5202 SmallVector<AttributeSet, 8> Attrs;
5203 if (RetAttrs.hasAttributes())
5204 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5205 AttributeSet::ReturnIndex,
5208 SmallVector<Value*, 8> Args;
5210 // Loop through FunctionType's arguments and ensure they are specified
5211 // correctly. Also, gather any parameter attributes.
5212 FunctionType::param_iterator I = Ty->param_begin();
5213 FunctionType::param_iterator E = Ty->param_end();
5214 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
5215 Type *ExpectedTy = nullptr;
5218 } else if (!Ty->isVarArg()) {
5219 return Error(ArgList[i].Loc, "too many arguments specified");
5222 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
5223 return Error(ArgList[i].Loc, "argument is not of expected type '" +
5224 getTypeString(ExpectedTy) + "'");
5225 Args.push_back(ArgList[i].V);
5226 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
5227 AttrBuilder B(ArgList[i].Attrs, i + 1);
5228 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
5233 return Error(CallLoc, "not enough parameters specified for call");
5235 if (FnAttrs.hasAttributes()) {
5236 if (FnAttrs.hasAlignmentAttr())
5237 return Error(CallLoc, "call instructions may not have an alignment");
5239 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5240 AttributeSet::FunctionIndex,
5244 // Finish off the Attribute and check them
5245 AttributeSet PAL = AttributeSet::get(Context, Attrs);
5247 CallInst *CI = CallInst::Create(Ty, Callee, Args);
5248 CI->setTailCallKind(TCK);
5249 CI->setCallingConv(CC);
5250 CI->setAttributes(PAL);
5251 ForwardRefAttrGroups[CI] = FwdRefAttrGrps;
5256 //===----------------------------------------------------------------------===//
5257 // Memory Instructions.
5258 //===----------------------------------------------------------------------===//
5261 /// ::= 'alloca' 'inalloca'? Type (',' TypeAndValue)? (',' 'align' i32)?
5262 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
5263 Value *Size = nullptr;
5264 LocTy SizeLoc, TyLoc;
5265 unsigned Alignment = 0;
5268 bool IsInAlloca = EatIfPresent(lltok::kw_inalloca);
5270 if (ParseType(Ty, TyLoc)) return true;
5272 if (Ty->isFunctionTy() || !PointerType::isValidElementType(Ty))
5273 return Error(TyLoc, "invalid type for alloca");
5275 bool AteExtraComma = false;
5276 if (EatIfPresent(lltok::comma)) {
5277 if (Lex.getKind() == lltok::kw_align) {
5278 if (ParseOptionalAlignment(Alignment)) return true;
5279 } else if (Lex.getKind() == lltok::MetadataVar) {
5280 AteExtraComma = true;
5282 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
5283 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5288 if (Size && !Size->getType()->isIntegerTy())
5289 return Error(SizeLoc, "element count must have integer type");
5291 AllocaInst *AI = new AllocaInst(Ty, Size, Alignment);
5292 AI->setUsedWithInAlloca(IsInAlloca);
5294 return AteExtraComma ? InstExtraComma : InstNormal;
5298 /// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
5299 /// ::= 'load' 'atomic' 'volatile'? TypeAndValue
5300 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
5301 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
5302 Value *Val; LocTy Loc;
5303 unsigned Alignment = 0;
5304 bool AteExtraComma = false;
5305 bool isAtomic = false;
5306 AtomicOrdering Ordering = NotAtomic;
5307 SynchronizationScope Scope = CrossThread;
5309 if (Lex.getKind() == lltok::kw_atomic) {
5314 bool isVolatile = false;
5315 if (Lex.getKind() == lltok::kw_volatile) {
5321 LocTy ExplicitTypeLoc = Lex.getLoc();
5322 if (ParseType(Ty) ||
5323 ParseToken(lltok::comma, "expected comma after load's type") ||
5324 ParseTypeAndValue(Val, Loc, PFS) ||
5325 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
5326 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5329 if (!Val->getType()->isPointerTy() || !Ty->isFirstClassType())
5330 return Error(Loc, "load operand must be a pointer to a first class type");
5331 if (isAtomic && !Alignment)
5332 return Error(Loc, "atomic load must have explicit non-zero alignment");
5333 if (Ordering == Release || Ordering == AcquireRelease)
5334 return Error(Loc, "atomic load cannot use Release ordering");
5336 if (Ty != cast<PointerType>(Val->getType())->getElementType())
5337 return Error(ExplicitTypeLoc,
5338 "explicit pointee type doesn't match operand's pointee type");
5340 Inst = new LoadInst(Ty, Val, "", isVolatile, Alignment, Ordering, Scope);
5341 return AteExtraComma ? InstExtraComma : InstNormal;
5346 /// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
5347 /// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
5348 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
5349 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
5350 Value *Val, *Ptr; LocTy Loc, PtrLoc;
5351 unsigned Alignment = 0;
5352 bool AteExtraComma = false;
5353 bool isAtomic = false;
5354 AtomicOrdering Ordering = NotAtomic;
5355 SynchronizationScope Scope = CrossThread;
5357 if (Lex.getKind() == lltok::kw_atomic) {
5362 bool isVolatile = false;
5363 if (Lex.getKind() == lltok::kw_volatile) {
5368 if (ParseTypeAndValue(Val, Loc, PFS) ||
5369 ParseToken(lltok::comma, "expected ',' after store operand") ||
5370 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5371 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
5372 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5375 if (!Ptr->getType()->isPointerTy())
5376 return Error(PtrLoc, "store operand must be a pointer");
5377 if (!Val->getType()->isFirstClassType())
5378 return Error(Loc, "store operand must be a first class value");
5379 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
5380 return Error(Loc, "stored value and pointer type do not match");
5381 if (isAtomic && !Alignment)
5382 return Error(Loc, "atomic store must have explicit non-zero alignment");
5383 if (Ordering == Acquire || Ordering == AcquireRelease)
5384 return Error(Loc, "atomic store cannot use Acquire ordering");
5386 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, Scope);
5387 return AteExtraComma ? InstExtraComma : InstNormal;
5391 /// ::= 'cmpxchg' 'weak'? 'volatile'? TypeAndValue ',' TypeAndValue ','
5392 /// TypeAndValue 'singlethread'? AtomicOrdering AtomicOrdering
5393 int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
5394 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
5395 bool AteExtraComma = false;
5396 AtomicOrdering SuccessOrdering = NotAtomic;
5397 AtomicOrdering FailureOrdering = NotAtomic;
5398 SynchronizationScope Scope = CrossThread;
5399 bool isVolatile = false;
5400 bool isWeak = false;
5402 if (EatIfPresent(lltok::kw_weak))
5405 if (EatIfPresent(lltok::kw_volatile))
5408 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5409 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
5410 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
5411 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
5412 ParseTypeAndValue(New, NewLoc, PFS) ||
5413 ParseScopeAndOrdering(true /*Always atomic*/, Scope, SuccessOrdering) ||
5414 ParseOrdering(FailureOrdering))
5417 if (SuccessOrdering == Unordered || FailureOrdering == Unordered)
5418 return TokError("cmpxchg cannot be unordered");
5419 if (SuccessOrdering < FailureOrdering)
5420 return TokError("cmpxchg must be at least as ordered on success as failure");
5421 if (FailureOrdering == Release || FailureOrdering == AcquireRelease)
5422 return TokError("cmpxchg failure ordering cannot include release semantics");
5423 if (!Ptr->getType()->isPointerTy())
5424 return Error(PtrLoc, "cmpxchg operand must be a pointer");
5425 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
5426 return Error(CmpLoc, "compare value and pointer type do not match");
5427 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
5428 return Error(NewLoc, "new value and pointer type do not match");
5429 if (!New->getType()->isIntegerTy())
5430 return Error(NewLoc, "cmpxchg operand must be an integer");
5431 unsigned Size = New->getType()->getPrimitiveSizeInBits();
5432 if (Size < 8 || (Size & (Size - 1)))
5433 return Error(NewLoc, "cmpxchg operand must be power-of-two byte-sized"
5436 AtomicCmpXchgInst *CXI = new AtomicCmpXchgInst(
5437 Ptr, Cmp, New, SuccessOrdering, FailureOrdering, Scope);
5438 CXI->setVolatile(isVolatile);
5439 CXI->setWeak(isWeak);
5441 return AteExtraComma ? InstExtraComma : InstNormal;
5445 /// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
5446 /// 'singlethread'? AtomicOrdering
5447 int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
5448 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
5449 bool AteExtraComma = false;
5450 AtomicOrdering Ordering = NotAtomic;
5451 SynchronizationScope Scope = CrossThread;
5452 bool isVolatile = false;
5453 AtomicRMWInst::BinOp Operation;
5455 if (EatIfPresent(lltok::kw_volatile))
5458 switch (Lex.getKind()) {
5459 default: return TokError("expected binary operation in atomicrmw");
5460 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
5461 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
5462 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
5463 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
5464 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
5465 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
5466 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
5467 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
5468 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
5469 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
5470 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
5472 Lex.Lex(); // Eat the operation.
5474 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5475 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
5476 ParseTypeAndValue(Val, ValLoc, PFS) ||
5477 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
5480 if (Ordering == Unordered)
5481 return TokError("atomicrmw cannot be unordered");
5482 if (!Ptr->getType()->isPointerTy())
5483 return Error(PtrLoc, "atomicrmw operand must be a pointer");
5484 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
5485 return Error(ValLoc, "atomicrmw value and pointer type do not match");
5486 if (!Val->getType()->isIntegerTy())
5487 return Error(ValLoc, "atomicrmw operand must be an integer");
5488 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
5489 if (Size < 8 || (Size & (Size - 1)))
5490 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
5493 AtomicRMWInst *RMWI =
5494 new AtomicRMWInst(Operation, Ptr, Val, Ordering, Scope);
5495 RMWI->setVolatile(isVolatile);
5497 return AteExtraComma ? InstExtraComma : InstNormal;
5501 /// ::= 'fence' 'singlethread'? AtomicOrdering
5502 int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
5503 AtomicOrdering Ordering = NotAtomic;
5504 SynchronizationScope Scope = CrossThread;
5505 if (ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
5508 if (Ordering == Unordered)
5509 return TokError("fence cannot be unordered");
5510 if (Ordering == Monotonic)
5511 return TokError("fence cannot be monotonic");
5513 Inst = new FenceInst(Context, Ordering, Scope);
5517 /// ParseGetElementPtr
5518 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
5519 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
5520 Value *Ptr = nullptr;
5521 Value *Val = nullptr;
5524 bool InBounds = EatIfPresent(lltok::kw_inbounds);
5527 LocTy ExplicitTypeLoc = Lex.getLoc();
5528 if (ParseType(Ty) ||
5529 ParseToken(lltok::comma, "expected comma after getelementptr's type") ||
5530 ParseTypeAndValue(Ptr, Loc, PFS))
5533 Type *BaseType = Ptr->getType();
5534 PointerType *BasePointerType = dyn_cast<PointerType>(BaseType->getScalarType());
5535 if (!BasePointerType)
5536 return Error(Loc, "base of getelementptr must be a pointer");
5538 if (Ty != BasePointerType->getElementType())
5539 return Error(ExplicitTypeLoc,
5540 "explicit pointee type doesn't match operand's pointee type");
5542 SmallVector<Value*, 16> Indices;
5543 bool AteExtraComma = false;
5544 while (EatIfPresent(lltok::comma)) {
5545 if (Lex.getKind() == lltok::MetadataVar) {
5546 AteExtraComma = true;
5549 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
5550 if (!Val->getType()->getScalarType()->isIntegerTy())
5551 return Error(EltLoc, "getelementptr index must be an integer");
5552 if (Val->getType()->isVectorTy() != Ptr->getType()->isVectorTy())
5553 return Error(EltLoc, "getelementptr index type missmatch");
5554 if (Val->getType()->isVectorTy()) {
5555 unsigned ValNumEl = cast<VectorType>(Val->getType())->getNumElements();
5556 unsigned PtrNumEl = cast<VectorType>(Ptr->getType())->getNumElements();
5557 if (ValNumEl != PtrNumEl)
5558 return Error(EltLoc,
5559 "getelementptr vector index has a wrong number of elements");
5561 Indices.push_back(Val);
5564 SmallPtrSet<const Type*, 4> Visited;
5565 if (!Indices.empty() && !Ty->isSized(&Visited))
5566 return Error(Loc, "base element of getelementptr must be sized");
5568 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
5569 return Error(Loc, "invalid getelementptr indices");
5570 Inst = GetElementPtrInst::Create(Ty, Ptr, Indices);
5572 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
5573 return AteExtraComma ? InstExtraComma : InstNormal;
5576 /// ParseExtractValue
5577 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
5578 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
5579 Value *Val; LocTy Loc;
5580 SmallVector<unsigned, 4> Indices;
5582 if (ParseTypeAndValue(Val, Loc, PFS) ||
5583 ParseIndexList(Indices, AteExtraComma))
5586 if (!Val->getType()->isAggregateType())
5587 return Error(Loc, "extractvalue operand must be aggregate type");
5589 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
5590 return Error(Loc, "invalid indices for extractvalue");
5591 Inst = ExtractValueInst::Create(Val, Indices);
5592 return AteExtraComma ? InstExtraComma : InstNormal;
5595 /// ParseInsertValue
5596 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
5597 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
5598 Value *Val0, *Val1; LocTy Loc0, Loc1;
5599 SmallVector<unsigned, 4> Indices;
5601 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
5602 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
5603 ParseTypeAndValue(Val1, Loc1, PFS) ||
5604 ParseIndexList(Indices, AteExtraComma))
5607 if (!Val0->getType()->isAggregateType())
5608 return Error(Loc0, "insertvalue operand must be aggregate type");
5610 Type *IndexedType = ExtractValueInst::getIndexedType(Val0->getType(), Indices);
5612 return Error(Loc0, "invalid indices for insertvalue");
5613 if (IndexedType != Val1->getType())
5614 return Error(Loc1, "insertvalue operand and field disagree in type: '" +
5615 getTypeString(Val1->getType()) + "' instead of '" +
5616 getTypeString(IndexedType) + "'");
5617 Inst = InsertValueInst::Create(Val0, Val1, Indices);
5618 return AteExtraComma ? InstExtraComma : InstNormal;
5621 //===----------------------------------------------------------------------===//
5622 // Embedded metadata.
5623 //===----------------------------------------------------------------------===//
5625 /// ParseMDNodeVector
5626 /// ::= { Element (',' Element)* }
5628 /// ::= 'null' | TypeAndValue
5629 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Metadata *> &Elts) {
5630 if (ParseToken(lltok::lbrace, "expected '{' here"))
5633 // Check for an empty list.
5634 if (EatIfPresent(lltok::rbrace))
5638 // Null is a special case since it is typeless.
5639 if (EatIfPresent(lltok::kw_null)) {
5640 Elts.push_back(nullptr);
5645 if (ParseMetadata(MD, nullptr))
5648 } while (EatIfPresent(lltok::comma));
5650 return ParseToken(lltok::rbrace, "expected end of metadata node");
5653 //===----------------------------------------------------------------------===//
5654 // Use-list order directives.
5655 //===----------------------------------------------------------------------===//
5656 bool LLParser::sortUseListOrder(Value *V, ArrayRef<unsigned> Indexes,
5659 return Error(Loc, "value has no uses");
5661 unsigned NumUses = 0;
5662 SmallDenseMap<const Use *, unsigned, 16> Order;
5663 for (const Use &U : V->uses()) {
5664 if (++NumUses > Indexes.size())
5666 Order[&U] = Indexes[NumUses - 1];
5669 return Error(Loc, "value only has one use");
5670 if (Order.size() != Indexes.size() || NumUses > Indexes.size())
5671 return Error(Loc, "wrong number of indexes, expected " +
5672 Twine(std::distance(V->use_begin(), V->use_end())));
5674 V->sortUseList([&](const Use &L, const Use &R) {
5675 return Order.lookup(&L) < Order.lookup(&R);
5680 /// ParseUseListOrderIndexes
5681 /// ::= '{' uint32 (',' uint32)+ '}'
5682 bool LLParser::ParseUseListOrderIndexes(SmallVectorImpl<unsigned> &Indexes) {
5683 SMLoc Loc = Lex.getLoc();
5684 if (ParseToken(lltok::lbrace, "expected '{' here"))
5686 if (Lex.getKind() == lltok::rbrace)
5687 return Lex.Error("expected non-empty list of uselistorder indexes");
5689 // Use Offset, Max, and IsOrdered to check consistency of indexes. The
5690 // indexes should be distinct numbers in the range [0, size-1], and should
5692 unsigned Offset = 0;
5694 bool IsOrdered = true;
5695 assert(Indexes.empty() && "Expected empty order vector");
5698 if (ParseUInt32(Index))
5701 // Update consistency checks.
5702 Offset += Index - Indexes.size();
5703 Max = std::max(Max, Index);
5704 IsOrdered &= Index == Indexes.size();
5706 Indexes.push_back(Index);
5707 } while (EatIfPresent(lltok::comma));
5709 if (ParseToken(lltok::rbrace, "expected '}' here"))
5712 if (Indexes.size() < 2)
5713 return Error(Loc, "expected >= 2 uselistorder indexes");
5714 if (Offset != 0 || Max >= Indexes.size())
5715 return Error(Loc, "expected distinct uselistorder indexes in range [0, size)");
5717 return Error(Loc, "expected uselistorder indexes to change the order");
5722 /// ParseUseListOrder
5723 /// ::= 'uselistorder' Type Value ',' UseListOrderIndexes
5724 bool LLParser::ParseUseListOrder(PerFunctionState *PFS) {
5725 SMLoc Loc = Lex.getLoc();
5726 if (ParseToken(lltok::kw_uselistorder, "expected uselistorder directive"))
5730 SmallVector<unsigned, 16> Indexes;
5731 if (ParseTypeAndValue(V, PFS) ||
5732 ParseToken(lltok::comma, "expected comma in uselistorder directive") ||
5733 ParseUseListOrderIndexes(Indexes))
5736 return sortUseListOrder(V, Indexes, Loc);
5739 /// ParseUseListOrderBB
5740 /// ::= 'uselistorder_bb' @foo ',' %bar ',' UseListOrderIndexes
5741 bool LLParser::ParseUseListOrderBB() {
5742 assert(Lex.getKind() == lltok::kw_uselistorder_bb);
5743 SMLoc Loc = Lex.getLoc();
5747 SmallVector<unsigned, 16> Indexes;
5748 if (ParseValID(Fn) ||
5749 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
5750 ParseValID(Label) ||
5751 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
5752 ParseUseListOrderIndexes(Indexes))
5755 // Check the function.
5757 if (Fn.Kind == ValID::t_GlobalName)
5758 GV = M->getNamedValue(Fn.StrVal);
5759 else if (Fn.Kind == ValID::t_GlobalID)
5760 GV = Fn.UIntVal < NumberedVals.size() ? NumberedVals[Fn.UIntVal] : nullptr;
5762 return Error(Fn.Loc, "expected function name in uselistorder_bb");
5764 return Error(Fn.Loc, "invalid function forward reference in uselistorder_bb");
5765 auto *F = dyn_cast<Function>(GV);
5767 return Error(Fn.Loc, "expected function name in uselistorder_bb");
5768 if (F->isDeclaration())
5769 return Error(Fn.Loc, "invalid declaration in uselistorder_bb");
5771 // Check the basic block.
5772 if (Label.Kind == ValID::t_LocalID)
5773 return Error(Label.Loc, "invalid numeric label in uselistorder_bb");
5774 if (Label.Kind != ValID::t_LocalName)
5775 return Error(Label.Loc, "expected basic block name in uselistorder_bb");
5776 Value *V = F->getValueSymbolTable().lookup(Label.StrVal);
5778 return Error(Label.Loc, "invalid basic block in uselistorder_bb");
5779 if (!isa<BasicBlock>(V))
5780 return Error(Label.Loc, "expected basic block in uselistorder_bb");
5782 return sortUseListOrder(V, Indexes, Loc);