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 return ParseToken(lltok::rbrace, "expected end of metadata node");
570 /// ParseStandaloneMetadata:
572 bool LLParser::ParseStandaloneMetadata() {
573 assert(Lex.getKind() == lltok::exclaim);
575 unsigned MetadataID = 0;
578 if (ParseUInt32(MetadataID) ||
579 ParseToken(lltok::equal, "expected '=' here"))
582 // Detect common error, from old metadata syntax.
583 if (Lex.getKind() == lltok::Type)
584 return TokError("unexpected type in metadata definition");
586 bool IsDistinct = EatIfPresent(lltok::kw_distinct);
587 if (Lex.getKind() == lltok::MetadataVar) {
588 if (ParseSpecializedMDNode(Init, IsDistinct))
590 } else if (ParseToken(lltok::exclaim, "Expected '!' here") ||
591 ParseMDTuple(Init, IsDistinct))
594 // See if this was forward referenced, if so, handle it.
595 auto FI = ForwardRefMDNodes.find(MetadataID);
596 if (FI != ForwardRefMDNodes.end()) {
597 FI->second.first->replaceAllUsesWith(Init);
598 ForwardRefMDNodes.erase(FI);
600 assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work");
602 if (NumberedMetadata.count(MetadataID))
603 return TokError("Metadata id is already used");
604 NumberedMetadata[MetadataID].reset(Init);
610 static bool isValidVisibilityForLinkage(unsigned V, unsigned L) {
611 return !GlobalValue::isLocalLinkage((GlobalValue::LinkageTypes)L) ||
612 (GlobalValue::VisibilityTypes)V == GlobalValue::DefaultVisibility;
616 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility
617 /// OptionalDLLStorageClass OptionalThreadLocal
618 /// OptionalUnNammedAddr 'alias' Aliasee
623 /// Everything through OptionalUnNammedAddr has already been parsed.
625 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc, unsigned L,
626 unsigned Visibility, unsigned DLLStorageClass,
627 GlobalVariable::ThreadLocalMode TLM,
629 assert(Lex.getKind() == lltok::kw_alias);
632 GlobalValue::LinkageTypes Linkage = (GlobalValue::LinkageTypes) L;
634 if(!GlobalAlias::isValidLinkage(Linkage))
635 return Error(NameLoc, "invalid linkage type for alias");
637 if (!isValidVisibilityForLinkage(Visibility, L))
638 return Error(NameLoc,
639 "symbol with local linkage must have default visibility");
642 LocTy AliaseeLoc = Lex.getLoc();
643 if (Lex.getKind() != lltok::kw_bitcast &&
644 Lex.getKind() != lltok::kw_getelementptr &&
645 Lex.getKind() != lltok::kw_addrspacecast &&
646 Lex.getKind() != lltok::kw_inttoptr) {
647 if (ParseGlobalTypeAndValue(Aliasee))
650 // The bitcast dest type is not present, it is implied by the dest type.
654 if (ID.Kind != ValID::t_Constant)
655 return Error(AliaseeLoc, "invalid aliasee");
656 Aliasee = ID.ConstantVal;
659 Type *AliaseeType = Aliasee->getType();
660 auto *PTy = dyn_cast<PointerType>(AliaseeType);
662 return Error(AliaseeLoc, "An alias must have pointer type");
664 // Okay, create the alias but do not insert it into the module yet.
665 std::unique_ptr<GlobalAlias> GA(
666 GlobalAlias::create(PTy, (GlobalValue::LinkageTypes)Linkage, Name,
667 Aliasee, /*Parent*/ nullptr));
668 GA->setThreadLocalMode(TLM);
669 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
670 GA->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
671 GA->setUnnamedAddr(UnnamedAddr);
673 // See if this value already exists in the symbol table. If so, it is either
674 // a redefinition or a definition of a forward reference.
675 if (GlobalValue *Val = M->getNamedValue(Name)) {
676 // See if this was a redefinition. If so, there is no entry in
678 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
679 I = ForwardRefVals.find(Name);
680 if (I == ForwardRefVals.end())
681 return Error(NameLoc, "redefinition of global named '@" + Name + "'");
683 // Otherwise, this was a definition of forward ref. Verify that types
685 if (Val->getType() != GA->getType())
686 return Error(NameLoc,
687 "forward reference and definition of alias have different types");
689 // If they agree, just RAUW the old value with the alias and remove the
691 Val->replaceAllUsesWith(GA.get());
692 Val->eraseFromParent();
693 ForwardRefVals.erase(I);
696 // Insert into the module, we know its name won't collide now.
697 M->getAliasList().push_back(GA.get());
698 assert(GA->getName() == Name && "Should not be a name conflict!");
700 // The module owns this now
707 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
708 /// OptionalThreadLocal OptionalUnNammedAddr OptionalAddrSpace
709 /// OptionalExternallyInitialized GlobalType Type Const
710 /// ::= OptionalLinkage OptionalVisibility OptionalDLLStorageClass
711 /// OptionalThreadLocal OptionalUnNammedAddr OptionalAddrSpace
712 /// OptionalExternallyInitialized GlobalType Type Const
714 /// Everything up to and including OptionalUnNammedAddr has been parsed
717 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
718 unsigned Linkage, bool HasLinkage,
719 unsigned Visibility, unsigned DLLStorageClass,
720 GlobalVariable::ThreadLocalMode TLM,
722 if (!isValidVisibilityForLinkage(Visibility, Linkage))
723 return Error(NameLoc,
724 "symbol with local linkage must have default visibility");
727 bool IsConstant, IsExternallyInitialized;
728 LocTy IsExternallyInitializedLoc;
732 if (ParseOptionalAddrSpace(AddrSpace) ||
733 ParseOptionalToken(lltok::kw_externally_initialized,
734 IsExternallyInitialized,
735 &IsExternallyInitializedLoc) ||
736 ParseGlobalType(IsConstant) ||
737 ParseType(Ty, TyLoc))
740 // If the linkage is specified and is external, then no initializer is
742 Constant *Init = nullptr;
743 if (!HasLinkage || (Linkage != GlobalValue::ExternalWeakLinkage &&
744 Linkage != GlobalValue::ExternalLinkage)) {
745 if (ParseGlobalValue(Ty, Init))
749 if (Ty->isFunctionTy() || !PointerType::isValidElementType(Ty))
750 return Error(TyLoc, "invalid type for global variable");
752 GlobalValue *GVal = nullptr;
754 // See if the global was forward referenced, if so, use the global.
756 GVal = M->getNamedValue(Name);
758 if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
759 return Error(NameLoc, "redefinition of global '@" + Name + "'");
762 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
763 I = ForwardRefValIDs.find(NumberedVals.size());
764 if (I != ForwardRefValIDs.end()) {
765 GVal = I->second.first;
766 ForwardRefValIDs.erase(I);
772 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, nullptr,
773 Name, nullptr, GlobalVariable::NotThreadLocal,
776 if (GVal->getValueType() != Ty)
778 "forward reference and definition of global have different types");
780 GV = cast<GlobalVariable>(GVal);
782 // Move the forward-reference to the correct spot in the module.
783 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
787 NumberedVals.push_back(GV);
789 // Set the parsed properties on the global.
791 GV->setInitializer(Init);
792 GV->setConstant(IsConstant);
793 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
794 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
795 GV->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
796 GV->setExternallyInitialized(IsExternallyInitialized);
797 GV->setThreadLocalMode(TLM);
798 GV->setUnnamedAddr(UnnamedAddr);
800 // Parse attributes on the global.
801 while (Lex.getKind() == lltok::comma) {
804 if (Lex.getKind() == lltok::kw_section) {
806 GV->setSection(Lex.getStrVal());
807 if (ParseToken(lltok::StringConstant, "expected global section string"))
809 } else if (Lex.getKind() == lltok::kw_align) {
811 if (ParseOptionalAlignment(Alignment)) return true;
812 GV->setAlignment(Alignment);
815 if (parseOptionalComdat(Name, C))
820 return TokError("unknown global variable property!");
827 /// ParseUnnamedAttrGrp
828 /// ::= 'attributes' AttrGrpID '=' '{' AttrValPair+ '}'
829 bool LLParser::ParseUnnamedAttrGrp() {
830 assert(Lex.getKind() == lltok::kw_attributes);
831 LocTy AttrGrpLoc = Lex.getLoc();
834 if (Lex.getKind() != lltok::AttrGrpID)
835 return TokError("expected attribute group id");
837 unsigned VarID = Lex.getUIntVal();
838 std::vector<unsigned> unused;
842 if (ParseToken(lltok::equal, "expected '=' here") ||
843 ParseToken(lltok::lbrace, "expected '{' here") ||
844 ParseFnAttributeValuePairs(NumberedAttrBuilders[VarID], unused, true,
846 ParseToken(lltok::rbrace, "expected end of attribute group"))
849 if (!NumberedAttrBuilders[VarID].hasAttributes())
850 return Error(AttrGrpLoc, "attribute group has no attributes");
855 /// ParseFnAttributeValuePairs
856 /// ::= <attr> | <attr> '=' <value>
857 bool LLParser::ParseFnAttributeValuePairs(AttrBuilder &B,
858 std::vector<unsigned> &FwdRefAttrGrps,
859 bool inAttrGrp, LocTy &BuiltinLoc) {
860 bool HaveError = false;
865 lltok::Kind Token = Lex.getKind();
866 if (Token == lltok::kw_builtin)
867 BuiltinLoc = Lex.getLoc();
870 if (!inAttrGrp) return HaveError;
871 return Error(Lex.getLoc(), "unterminated attribute group");
876 case lltok::AttrGrpID: {
877 // Allow a function to reference an attribute group:
879 // define void @foo() #1 { ... }
883 "cannot have an attribute group reference in an attribute group");
885 unsigned AttrGrpNum = Lex.getUIntVal();
886 if (inAttrGrp) break;
888 // Save the reference to the attribute group. We'll fill it in later.
889 FwdRefAttrGrps.push_back(AttrGrpNum);
892 // Target-dependent attributes:
893 case lltok::StringConstant: {
894 std::string Attr = Lex.getStrVal();
897 if (EatIfPresent(lltok::equal) &&
898 ParseStringConstant(Val))
901 B.addAttribute(Attr, Val);
905 // Target-independent attributes:
906 case lltok::kw_align: {
907 // As a hack, we allow function alignment to be initially parsed as an
908 // attribute on a function declaration/definition or added to an attribute
909 // group and later moved to the alignment field.
913 if (ParseToken(lltok::equal, "expected '=' here") ||
914 ParseUInt32(Alignment))
917 if (ParseOptionalAlignment(Alignment))
920 B.addAlignmentAttr(Alignment);
923 case lltok::kw_alignstack: {
927 if (ParseToken(lltok::equal, "expected '=' here") ||
928 ParseUInt32(Alignment))
931 if (ParseOptionalStackAlignment(Alignment))
934 B.addStackAlignmentAttr(Alignment);
937 case lltok::kw_alwaysinline: B.addAttribute(Attribute::AlwaysInline); break;
938 case lltok::kw_builtin: B.addAttribute(Attribute::Builtin); break;
939 case lltok::kw_cold: B.addAttribute(Attribute::Cold); break;
940 case lltok::kw_inlinehint: B.addAttribute(Attribute::InlineHint); break;
941 case lltok::kw_jumptable: B.addAttribute(Attribute::JumpTable); break;
942 case lltok::kw_minsize: B.addAttribute(Attribute::MinSize); break;
943 case lltok::kw_naked: B.addAttribute(Attribute::Naked); break;
944 case lltok::kw_nobuiltin: B.addAttribute(Attribute::NoBuiltin); break;
945 case lltok::kw_noduplicate: B.addAttribute(Attribute::NoDuplicate); break;
946 case lltok::kw_noimplicitfloat: B.addAttribute(Attribute::NoImplicitFloat); break;
947 case lltok::kw_noinline: B.addAttribute(Attribute::NoInline); break;
948 case lltok::kw_nonlazybind: B.addAttribute(Attribute::NonLazyBind); break;
949 case lltok::kw_noredzone: B.addAttribute(Attribute::NoRedZone); break;
950 case lltok::kw_noreturn: B.addAttribute(Attribute::NoReturn); break;
951 case lltok::kw_nounwind: B.addAttribute(Attribute::NoUnwind); break;
952 case lltok::kw_optnone: B.addAttribute(Attribute::OptimizeNone); break;
953 case lltok::kw_optsize: B.addAttribute(Attribute::OptimizeForSize); break;
954 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
955 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
956 case lltok::kw_returns_twice: B.addAttribute(Attribute::ReturnsTwice); break;
957 case lltok::kw_ssp: B.addAttribute(Attribute::StackProtect); break;
958 case lltok::kw_sspreq: B.addAttribute(Attribute::StackProtectReq); break;
959 case lltok::kw_sspstrong: B.addAttribute(Attribute::StackProtectStrong); break;
960 case lltok::kw_sanitize_address: B.addAttribute(Attribute::SanitizeAddress); break;
961 case lltok::kw_sanitize_thread: B.addAttribute(Attribute::SanitizeThread); break;
962 case lltok::kw_sanitize_memory: B.addAttribute(Attribute::SanitizeMemory); break;
963 case lltok::kw_uwtable: B.addAttribute(Attribute::UWTable); break;
966 case lltok::kw_inreg:
967 case lltok::kw_signext:
968 case lltok::kw_zeroext:
971 "invalid use of attribute on a function");
973 case lltok::kw_byval:
974 case lltok::kw_dereferenceable:
975 case lltok::kw_dereferenceable_or_null:
976 case lltok::kw_inalloca:
978 case lltok::kw_noalias:
979 case lltok::kw_nocapture:
980 case lltok::kw_nonnull:
981 case lltok::kw_returned:
985 "invalid use of parameter-only attribute on a function");
993 //===----------------------------------------------------------------------===//
994 // GlobalValue Reference/Resolution Routines.
995 //===----------------------------------------------------------------------===//
997 /// GetGlobalVal - Get a value with the specified name or ID, creating a
998 /// forward reference record if needed. This can return null if the value
999 /// exists but does not have the right type.
1000 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
1002 PointerType *PTy = dyn_cast<PointerType>(Ty);
1004 Error(Loc, "global variable reference must have pointer type");
1008 // Look this name up in the normal function symbol table.
1010 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
1012 // If this is a forward reference for the value, see if we already created a
1013 // forward ref record.
1015 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
1016 I = ForwardRefVals.find(Name);
1017 if (I != ForwardRefVals.end())
1018 Val = I->second.first;
1021 // If we have the value in the symbol table or fwd-ref table, return it.
1023 if (Val->getType() == Ty) return Val;
1024 Error(Loc, "'@" + Name + "' defined with type '" +
1025 getTypeString(Val->getType()) + "'");
1029 // Otherwise, create a new forward reference for this value and remember it.
1030 GlobalValue *FwdVal;
1031 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1032 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
1034 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1035 GlobalValue::ExternalWeakLinkage, nullptr, Name,
1036 nullptr, GlobalVariable::NotThreadLocal,
1037 PTy->getAddressSpace());
1039 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1043 GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
1044 PointerType *PTy = dyn_cast<PointerType>(Ty);
1046 Error(Loc, "global variable reference must have pointer type");
1050 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
1052 // If this is a forward reference for the value, see if we already created a
1053 // forward ref record.
1055 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
1056 I = ForwardRefValIDs.find(ID);
1057 if (I != ForwardRefValIDs.end())
1058 Val = I->second.first;
1061 // If we have the value in the symbol table or fwd-ref table, return it.
1063 if (Val->getType() == Ty) return Val;
1064 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
1065 getTypeString(Val->getType()) + "'");
1069 // Otherwise, create a new forward reference for this value and remember it.
1070 GlobalValue *FwdVal;
1071 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1072 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
1074 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1075 GlobalValue::ExternalWeakLinkage, nullptr, "");
1077 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1082 //===----------------------------------------------------------------------===//
1083 // Comdat Reference/Resolution Routines.
1084 //===----------------------------------------------------------------------===//
1086 Comdat *LLParser::getComdat(const std::string &Name, LocTy Loc) {
1087 // Look this name up in the comdat symbol table.
1088 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
1089 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
1090 if (I != ComdatSymTab.end())
1093 // Otherwise, create a new forward reference for this value and remember it.
1094 Comdat *C = M->getOrInsertComdat(Name);
1095 ForwardRefComdats[Name] = Loc;
1100 //===----------------------------------------------------------------------===//
1102 //===----------------------------------------------------------------------===//
1104 /// ParseToken - If the current token has the specified kind, eat it and return
1105 /// success. Otherwise, emit the specified error and return failure.
1106 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
1107 if (Lex.getKind() != T)
1108 return TokError(ErrMsg);
1113 /// ParseStringConstant
1114 /// ::= StringConstant
1115 bool LLParser::ParseStringConstant(std::string &Result) {
1116 if (Lex.getKind() != lltok::StringConstant)
1117 return TokError("expected string constant");
1118 Result = Lex.getStrVal();
1125 bool LLParser::ParseUInt32(unsigned &Val) {
1126 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1127 return TokError("expected integer");
1128 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
1129 if (Val64 != unsigned(Val64))
1130 return TokError("expected 32-bit integer (too large)");
1138 bool LLParser::ParseUInt64(uint64_t &Val) {
1139 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1140 return TokError("expected integer");
1141 Val = Lex.getAPSIntVal().getLimitedValue();
1147 /// := 'localdynamic'
1148 /// := 'initialexec'
1150 bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
1151 switch (Lex.getKind()) {
1153 return TokError("expected localdynamic, initialexec or localexec");
1154 case lltok::kw_localdynamic:
1155 TLM = GlobalVariable::LocalDynamicTLSModel;
1157 case lltok::kw_initialexec:
1158 TLM = GlobalVariable::InitialExecTLSModel;
1160 case lltok::kw_localexec:
1161 TLM = GlobalVariable::LocalExecTLSModel;
1169 /// ParseOptionalThreadLocal
1171 /// := 'thread_local'
1172 /// := 'thread_local' '(' tlsmodel ')'
1173 bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
1174 TLM = GlobalVariable::NotThreadLocal;
1175 if (!EatIfPresent(lltok::kw_thread_local))
1178 TLM = GlobalVariable::GeneralDynamicTLSModel;
1179 if (Lex.getKind() == lltok::lparen) {
1181 return ParseTLSModel(TLM) ||
1182 ParseToken(lltok::rparen, "expected ')' after thread local model");
1187 /// ParseOptionalAddrSpace
1189 /// := 'addrspace' '(' uint32 ')'
1190 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
1192 if (!EatIfPresent(lltok::kw_addrspace))
1194 return ParseToken(lltok::lparen, "expected '(' in address space") ||
1195 ParseUInt32(AddrSpace) ||
1196 ParseToken(lltok::rparen, "expected ')' in address space");
1199 /// ParseOptionalParamAttrs - Parse a potentially empty list of parameter attributes.
1200 bool LLParser::ParseOptionalParamAttrs(AttrBuilder &B) {
1201 bool HaveError = false;
1206 lltok::Kind Token = Lex.getKind();
1208 default: // End of attributes.
1210 case lltok::kw_align: {
1212 if (ParseOptionalAlignment(Alignment))
1214 B.addAlignmentAttr(Alignment);
1217 case lltok::kw_byval: B.addAttribute(Attribute::ByVal); break;
1218 case lltok::kw_dereferenceable: {
1220 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1222 B.addDereferenceableAttr(Bytes);
1225 case lltok::kw_dereferenceable_or_null: {
1227 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1229 B.addDereferenceableOrNullAttr(Bytes);
1232 case lltok::kw_inalloca: B.addAttribute(Attribute::InAlloca); break;
1233 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1234 case lltok::kw_nest: B.addAttribute(Attribute::Nest); break;
1235 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1236 case lltok::kw_nocapture: B.addAttribute(Attribute::NoCapture); break;
1237 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1238 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1239 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1240 case lltok::kw_returned: B.addAttribute(Attribute::Returned); break;
1241 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1242 case lltok::kw_sret: B.addAttribute(Attribute::StructRet); break;
1243 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1245 case lltok::kw_alignstack:
1246 case lltok::kw_alwaysinline:
1247 case lltok::kw_builtin:
1248 case lltok::kw_inlinehint:
1249 case lltok::kw_jumptable:
1250 case lltok::kw_minsize:
1251 case lltok::kw_naked:
1252 case lltok::kw_nobuiltin:
1253 case lltok::kw_noduplicate:
1254 case lltok::kw_noimplicitfloat:
1255 case lltok::kw_noinline:
1256 case lltok::kw_nonlazybind:
1257 case lltok::kw_noredzone:
1258 case lltok::kw_noreturn:
1259 case lltok::kw_nounwind:
1260 case lltok::kw_optnone:
1261 case lltok::kw_optsize:
1262 case lltok::kw_returns_twice:
1263 case lltok::kw_sanitize_address:
1264 case lltok::kw_sanitize_memory:
1265 case lltok::kw_sanitize_thread:
1267 case lltok::kw_sspreq:
1268 case lltok::kw_sspstrong:
1269 case lltok::kw_uwtable:
1270 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1278 /// ParseOptionalReturnAttrs - Parse a potentially empty list of return attributes.
1279 bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
1280 bool HaveError = false;
1285 lltok::Kind Token = Lex.getKind();
1287 default: // End of attributes.
1289 case lltok::kw_dereferenceable: {
1291 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1293 B.addDereferenceableAttr(Bytes);
1296 case lltok::kw_dereferenceable_or_null: {
1298 if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1300 B.addDereferenceableOrNullAttr(Bytes);
1303 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1304 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1305 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1306 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1307 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1310 case lltok::kw_align:
1311 case lltok::kw_byval:
1312 case lltok::kw_inalloca:
1313 case lltok::kw_nest:
1314 case lltok::kw_nocapture:
1315 case lltok::kw_returned:
1316 case lltok::kw_sret:
1317 HaveError |= Error(Lex.getLoc(), "invalid use of parameter-only attribute");
1320 case lltok::kw_alignstack:
1321 case lltok::kw_alwaysinline:
1322 case lltok::kw_builtin:
1323 case lltok::kw_cold:
1324 case lltok::kw_inlinehint:
1325 case lltok::kw_jumptable:
1326 case lltok::kw_minsize:
1327 case lltok::kw_naked:
1328 case lltok::kw_nobuiltin:
1329 case lltok::kw_noduplicate:
1330 case lltok::kw_noimplicitfloat:
1331 case lltok::kw_noinline:
1332 case lltok::kw_nonlazybind:
1333 case lltok::kw_noredzone:
1334 case lltok::kw_noreturn:
1335 case lltok::kw_nounwind:
1336 case lltok::kw_optnone:
1337 case lltok::kw_optsize:
1338 case lltok::kw_returns_twice:
1339 case lltok::kw_sanitize_address:
1340 case lltok::kw_sanitize_memory:
1341 case lltok::kw_sanitize_thread:
1343 case lltok::kw_sspreq:
1344 case lltok::kw_sspstrong:
1345 case lltok::kw_uwtable:
1346 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1349 case lltok::kw_readnone:
1350 case lltok::kw_readonly:
1351 HaveError |= Error(Lex.getLoc(), "invalid use of attribute on return type");
1358 /// ParseOptionalLinkage
1365 /// ::= 'linkonce_odr'
1366 /// ::= 'available_externally'
1369 /// ::= 'extern_weak'
1371 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1373 switch (Lex.getKind()) {
1374 default: Res=GlobalValue::ExternalLinkage; return false;
1375 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1376 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1377 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1378 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1379 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1380 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1381 case lltok::kw_available_externally:
1382 Res = GlobalValue::AvailableExternallyLinkage;
1384 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1385 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1386 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1387 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1394 /// ParseOptionalVisibility
1400 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1401 switch (Lex.getKind()) {
1402 default: Res = GlobalValue::DefaultVisibility; return false;
1403 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1404 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1405 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1411 /// ParseOptionalDLLStorageClass
1416 bool LLParser::ParseOptionalDLLStorageClass(unsigned &Res) {
1417 switch (Lex.getKind()) {
1418 default: Res = GlobalValue::DefaultStorageClass; return false;
1419 case lltok::kw_dllimport: Res = GlobalValue::DLLImportStorageClass; break;
1420 case lltok::kw_dllexport: Res = GlobalValue::DLLExportStorageClass; break;
1426 /// ParseOptionalCallingConv
1430 /// ::= 'intel_ocl_bicc'
1432 /// ::= 'x86_stdcallcc'
1433 /// ::= 'x86_fastcallcc'
1434 /// ::= 'x86_thiscallcc'
1435 /// ::= 'x86_vectorcallcc'
1436 /// ::= 'arm_apcscc'
1437 /// ::= 'arm_aapcscc'
1438 /// ::= 'arm_aapcs_vfpcc'
1439 /// ::= 'msp430_intrcc'
1440 /// ::= 'ptx_kernel'
1441 /// ::= 'ptx_device'
1443 /// ::= 'spir_kernel'
1444 /// ::= 'x86_64_sysvcc'
1445 /// ::= 'x86_64_win64cc'
1446 /// ::= 'webkit_jscc'
1448 /// ::= 'preserve_mostcc'
1449 /// ::= 'preserve_allcc'
1453 bool LLParser::ParseOptionalCallingConv(unsigned &CC) {
1454 switch (Lex.getKind()) {
1455 default: CC = CallingConv::C; return false;
1456 case lltok::kw_ccc: CC = CallingConv::C; break;
1457 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1458 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1459 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1460 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1461 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1462 case lltok::kw_x86_vectorcallcc:CC = CallingConv::X86_VectorCall; break;
1463 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1464 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1465 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1466 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1467 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1468 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1469 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1470 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1471 case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1472 case lltok::kw_x86_64_sysvcc: CC = CallingConv::X86_64_SysV; break;
1473 case lltok::kw_x86_64_win64cc: CC = CallingConv::X86_64_Win64; break;
1474 case lltok::kw_webkit_jscc: CC = CallingConv::WebKit_JS; break;
1475 case lltok::kw_anyregcc: CC = CallingConv::AnyReg; break;
1476 case lltok::kw_preserve_mostcc:CC = CallingConv::PreserveMost; break;
1477 case lltok::kw_preserve_allcc: CC = CallingConv::PreserveAll; break;
1478 case lltok::kw_ghccc: CC = CallingConv::GHC; break;
1479 case lltok::kw_cc: {
1481 return ParseUInt32(CC);
1489 /// ParseMetadataAttachment
1491 bool LLParser::ParseMetadataAttachment(unsigned &Kind, MDNode *&MD) {
1492 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata attachment");
1494 std::string Name = Lex.getStrVal();
1495 Kind = M->getMDKindID(Name);
1498 return ParseMDNode(MD);
1501 /// ParseInstructionMetadata
1502 /// ::= !dbg !42 (',' !dbg !57)*
1503 bool LLParser::ParseInstructionMetadata(Instruction &Inst) {
1505 if (Lex.getKind() != lltok::MetadataVar)
1506 return TokError("expected metadata after comma");
1510 if (ParseMetadataAttachment(MDK, N))
1513 Inst.setMetadata(MDK, N);
1514 if (MDK == LLVMContext::MD_tbaa)
1515 InstsWithTBAATag.push_back(&Inst);
1517 // If this is the end of the list, we're done.
1518 } while (EatIfPresent(lltok::comma));
1522 /// ParseOptionalFunctionMetadata
1524 bool LLParser::ParseOptionalFunctionMetadata(Function &F) {
1525 while (Lex.getKind() == lltok::MetadataVar) {
1528 if (ParseMetadataAttachment(MDK, N))
1531 F.setMetadata(MDK, N);
1536 /// ParseOptionalAlignment
1539 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1541 if (!EatIfPresent(lltok::kw_align))
1543 LocTy AlignLoc = Lex.getLoc();
1544 if (ParseUInt32(Alignment)) return true;
1545 if (!isPowerOf2_32(Alignment))
1546 return Error(AlignLoc, "alignment is not a power of two");
1547 if (Alignment > Value::MaximumAlignment)
1548 return Error(AlignLoc, "huge alignments are not supported yet");
1552 /// ParseOptionalDerefAttrBytes
1554 /// ::= AttrKind '(' 4 ')'
1556 /// where AttrKind is either 'dereferenceable' or 'dereferenceable_or_null'.
1557 bool LLParser::ParseOptionalDerefAttrBytes(lltok::Kind AttrKind,
1559 assert((AttrKind == lltok::kw_dereferenceable ||
1560 AttrKind == lltok::kw_dereferenceable_or_null) &&
1564 if (!EatIfPresent(AttrKind))
1566 LocTy ParenLoc = Lex.getLoc();
1567 if (!EatIfPresent(lltok::lparen))
1568 return Error(ParenLoc, "expected '('");
1569 LocTy DerefLoc = Lex.getLoc();
1570 if (ParseUInt64(Bytes)) return true;
1571 ParenLoc = Lex.getLoc();
1572 if (!EatIfPresent(lltok::rparen))
1573 return Error(ParenLoc, "expected ')'");
1575 return Error(DerefLoc, "dereferenceable bytes must be non-zero");
1579 /// ParseOptionalCommaAlign
1583 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1585 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1586 bool &AteExtraComma) {
1587 AteExtraComma = false;
1588 while (EatIfPresent(lltok::comma)) {
1589 // Metadata at the end is an early exit.
1590 if (Lex.getKind() == lltok::MetadataVar) {
1591 AteExtraComma = true;
1595 if (Lex.getKind() != lltok::kw_align)
1596 return Error(Lex.getLoc(), "expected metadata or 'align'");
1598 if (ParseOptionalAlignment(Alignment)) return true;
1604 /// ParseScopeAndOrdering
1605 /// if isAtomic: ::= 'singlethread'? AtomicOrdering
1608 /// This sets Scope and Ordering to the parsed values.
1609 bool LLParser::ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope,
1610 AtomicOrdering &Ordering) {
1614 Scope = CrossThread;
1615 if (EatIfPresent(lltok::kw_singlethread))
1616 Scope = SingleThread;
1618 return ParseOrdering(Ordering);
1622 /// ::= AtomicOrdering
1624 /// This sets Ordering to the parsed value.
1625 bool LLParser::ParseOrdering(AtomicOrdering &Ordering) {
1626 switch (Lex.getKind()) {
1627 default: return TokError("Expected ordering on atomic instruction");
1628 case lltok::kw_unordered: Ordering = Unordered; break;
1629 case lltok::kw_monotonic: Ordering = Monotonic; break;
1630 case lltok::kw_acquire: Ordering = Acquire; break;
1631 case lltok::kw_release: Ordering = Release; break;
1632 case lltok::kw_acq_rel: Ordering = AcquireRelease; break;
1633 case lltok::kw_seq_cst: Ordering = SequentiallyConsistent; break;
1639 /// ParseOptionalStackAlignment
1641 /// ::= 'alignstack' '(' 4 ')'
1642 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1644 if (!EatIfPresent(lltok::kw_alignstack))
1646 LocTy ParenLoc = Lex.getLoc();
1647 if (!EatIfPresent(lltok::lparen))
1648 return Error(ParenLoc, "expected '('");
1649 LocTy AlignLoc = Lex.getLoc();
1650 if (ParseUInt32(Alignment)) return true;
1651 ParenLoc = Lex.getLoc();
1652 if (!EatIfPresent(lltok::rparen))
1653 return Error(ParenLoc, "expected ')'");
1654 if (!isPowerOf2_32(Alignment))
1655 return Error(AlignLoc, "stack alignment is not a power of two");
1659 /// ParseIndexList - This parses the index list for an insert/extractvalue
1660 /// instruction. This sets AteExtraComma in the case where we eat an extra
1661 /// comma at the end of the line and find that it is followed by metadata.
1662 /// Clients that don't allow metadata can call the version of this function that
1663 /// only takes one argument.
1666 /// ::= (',' uint32)+
1668 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1669 bool &AteExtraComma) {
1670 AteExtraComma = false;
1672 if (Lex.getKind() != lltok::comma)
1673 return TokError("expected ',' as start of index list");
1675 while (EatIfPresent(lltok::comma)) {
1676 if (Lex.getKind() == lltok::MetadataVar) {
1677 if (Indices.empty()) return TokError("expected index");
1678 AteExtraComma = true;
1682 if (ParseUInt32(Idx)) return true;
1683 Indices.push_back(Idx);
1689 //===----------------------------------------------------------------------===//
1691 //===----------------------------------------------------------------------===//
1693 /// ParseType - Parse a type.
1694 bool LLParser::ParseType(Type *&Result, const Twine &Msg, bool AllowVoid) {
1695 SMLoc TypeLoc = Lex.getLoc();
1696 switch (Lex.getKind()) {
1698 return TokError(Msg);
1700 // Type ::= 'float' | 'void' (etc)
1701 Result = Lex.getTyVal();
1705 // Type ::= StructType
1706 if (ParseAnonStructType(Result, false))
1709 case lltok::lsquare:
1710 // Type ::= '[' ... ']'
1711 Lex.Lex(); // eat the lsquare.
1712 if (ParseArrayVectorType(Result, false))
1715 case lltok::less: // Either vector or packed struct.
1716 // Type ::= '<' ... '>'
1718 if (Lex.getKind() == lltok::lbrace) {
1719 if (ParseAnonStructType(Result, true) ||
1720 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1722 } else if (ParseArrayVectorType(Result, true))
1725 case lltok::LocalVar: {
1727 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
1729 // If the type hasn't been defined yet, create a forward definition and
1730 // remember where that forward def'n was seen (in case it never is defined).
1732 Entry.first = StructType::create(Context, Lex.getStrVal());
1733 Entry.second = Lex.getLoc();
1735 Result = Entry.first;
1740 case lltok::LocalVarID: {
1742 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
1744 // If the type hasn't been defined yet, create a forward definition and
1745 // remember where that forward def'n was seen (in case it never is defined).
1747 Entry.first = StructType::create(Context);
1748 Entry.second = Lex.getLoc();
1750 Result = Entry.first;
1756 // Parse the type suffixes.
1758 switch (Lex.getKind()) {
1761 if (!AllowVoid && Result->isVoidTy())
1762 return Error(TypeLoc, "void type only allowed for function results");
1765 // Type ::= Type '*'
1767 if (Result->isLabelTy())
1768 return TokError("basic block pointers are invalid");
1769 if (Result->isVoidTy())
1770 return TokError("pointers to void are invalid - use i8* instead");
1771 if (!PointerType::isValidElementType(Result))
1772 return TokError("pointer to this type is invalid");
1773 Result = PointerType::getUnqual(Result);
1777 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
1778 case lltok::kw_addrspace: {
1779 if (Result->isLabelTy())
1780 return TokError("basic block pointers are invalid");
1781 if (Result->isVoidTy())
1782 return TokError("pointers to void are invalid; use i8* instead");
1783 if (!PointerType::isValidElementType(Result))
1784 return TokError("pointer to this type is invalid");
1786 if (ParseOptionalAddrSpace(AddrSpace) ||
1787 ParseToken(lltok::star, "expected '*' in address space"))
1790 Result = PointerType::get(Result, AddrSpace);
1794 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1796 if (ParseFunctionType(Result))
1803 /// ParseParameterList
1805 /// ::= '(' Arg (',' Arg)* ')'
1807 /// ::= Type OptionalAttributes Value OptionalAttributes
1808 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1809 PerFunctionState &PFS, bool IsMustTailCall,
1810 bool InVarArgsFunc) {
1811 if (ParseToken(lltok::lparen, "expected '(' in call"))
1814 unsigned AttrIndex = 1;
1815 while (Lex.getKind() != lltok::rparen) {
1816 // If this isn't the first argument, we need a comma.
1817 if (!ArgList.empty() &&
1818 ParseToken(lltok::comma, "expected ',' in argument list"))
1821 // Parse an ellipsis if this is a musttail call in a variadic function.
1822 if (Lex.getKind() == lltok::dotdotdot) {
1823 const char *Msg = "unexpected ellipsis in argument list for ";
1824 if (!IsMustTailCall)
1825 return TokError(Twine(Msg) + "non-musttail call");
1827 return TokError(Twine(Msg) + "musttail call in non-varargs function");
1828 Lex.Lex(); // Lex the '...', it is purely for readability.
1829 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1832 // Parse the argument.
1834 Type *ArgTy = nullptr;
1835 AttrBuilder ArgAttrs;
1837 if (ParseType(ArgTy, ArgLoc))
1840 if (ArgTy->isMetadataTy()) {
1841 if (ParseMetadataAsValue(V, PFS))
1844 // Otherwise, handle normal operands.
1845 if (ParseOptionalParamAttrs(ArgAttrs) || ParseValue(ArgTy, V, PFS))
1848 ArgList.push_back(ParamInfo(ArgLoc, V, AttributeSet::get(V->getContext(),
1853 if (IsMustTailCall && InVarArgsFunc)
1854 return TokError("expected '...' at end of argument list for musttail call "
1855 "in varargs function");
1857 Lex.Lex(); // Lex the ')'.
1863 /// ParseArgumentList - Parse the argument list for a function type or function
1865 /// ::= '(' ArgTypeListI ')'
1869 /// ::= ArgTypeList ',' '...'
1870 /// ::= ArgType (',' ArgType)*
1872 bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
1875 assert(Lex.getKind() == lltok::lparen);
1876 Lex.Lex(); // eat the (.
1878 if (Lex.getKind() == lltok::rparen) {
1880 } else if (Lex.getKind() == lltok::dotdotdot) {
1884 LocTy TypeLoc = Lex.getLoc();
1885 Type *ArgTy = nullptr;
1889 if (ParseType(ArgTy) ||
1890 ParseOptionalParamAttrs(Attrs)) return true;
1892 if (ArgTy->isVoidTy())
1893 return Error(TypeLoc, "argument can not have void type");
1895 if (Lex.getKind() == lltok::LocalVar) {
1896 Name = Lex.getStrVal();
1900 if (!FunctionType::isValidArgumentType(ArgTy))
1901 return Error(TypeLoc, "invalid type for function argument");
1903 unsigned AttrIndex = 1;
1904 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1905 AttributeSet::get(ArgTy->getContext(),
1906 AttrIndex++, Attrs), Name));
1908 while (EatIfPresent(lltok::comma)) {
1909 // Handle ... at end of arg list.
1910 if (EatIfPresent(lltok::dotdotdot)) {
1915 // Otherwise must be an argument type.
1916 TypeLoc = Lex.getLoc();
1917 if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
1919 if (ArgTy->isVoidTy())
1920 return Error(TypeLoc, "argument can not have void type");
1922 if (Lex.getKind() == lltok::LocalVar) {
1923 Name = Lex.getStrVal();
1929 if (!ArgTy->isFirstClassType())
1930 return Error(TypeLoc, "invalid type for function argument");
1932 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1933 AttributeSet::get(ArgTy->getContext(),
1934 AttrIndex++, Attrs),
1939 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1942 /// ParseFunctionType
1943 /// ::= Type ArgumentList OptionalAttrs
1944 bool LLParser::ParseFunctionType(Type *&Result) {
1945 assert(Lex.getKind() == lltok::lparen);
1947 if (!FunctionType::isValidReturnType(Result))
1948 return TokError("invalid function return type");
1950 SmallVector<ArgInfo, 8> ArgList;
1952 if (ParseArgumentList(ArgList, isVarArg))
1955 // Reject names on the arguments lists.
1956 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1957 if (!ArgList[i].Name.empty())
1958 return Error(ArgList[i].Loc, "argument name invalid in function type");
1959 if (ArgList[i].Attrs.hasAttributes(i + 1))
1960 return Error(ArgList[i].Loc,
1961 "argument attributes invalid in function type");
1964 SmallVector<Type*, 16> ArgListTy;
1965 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1966 ArgListTy.push_back(ArgList[i].Ty);
1968 Result = FunctionType::get(Result, ArgListTy, isVarArg);
1972 /// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
1974 bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
1975 SmallVector<Type*, 8> Elts;
1976 if (ParseStructBody(Elts)) return true;
1978 Result = StructType::get(Context, Elts, Packed);
1982 /// ParseStructDefinition - Parse a struct in a 'type' definition.
1983 bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
1984 std::pair<Type*, LocTy> &Entry,
1986 // If the type was already defined, diagnose the redefinition.
1987 if (Entry.first && !Entry.second.isValid())
1988 return Error(TypeLoc, "redefinition of type");
1990 // If we have opaque, just return without filling in the definition for the
1991 // struct. This counts as a definition as far as the .ll file goes.
1992 if (EatIfPresent(lltok::kw_opaque)) {
1993 // This type is being defined, so clear the location to indicate this.
1994 Entry.second = SMLoc();
1996 // If this type number has never been uttered, create it.
1998 Entry.first = StructType::create(Context, Name);
1999 ResultTy = Entry.first;
2003 // If the type starts with '<', then it is either a packed struct or a vector.
2004 bool isPacked = EatIfPresent(lltok::less);
2006 // If we don't have a struct, then we have a random type alias, which we
2007 // accept for compatibility with old files. These types are not allowed to be
2008 // forward referenced and not allowed to be recursive.
2009 if (Lex.getKind() != lltok::lbrace) {
2011 return Error(TypeLoc, "forward references to non-struct type");
2015 return ParseArrayVectorType(ResultTy, true);
2016 return ParseType(ResultTy);
2019 // This type is being defined, so clear the location to indicate this.
2020 Entry.second = SMLoc();
2022 // If this type number has never been uttered, create it.
2024 Entry.first = StructType::create(Context, Name);
2026 StructType *STy = cast<StructType>(Entry.first);
2028 SmallVector<Type*, 8> Body;
2029 if (ParseStructBody(Body) ||
2030 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
2033 STy->setBody(Body, isPacked);
2039 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
2042 /// ::= '{' Type (',' Type)* '}'
2043 /// ::= '<' '{' '}' '>'
2044 /// ::= '<' '{' Type (',' Type)* '}' '>'
2045 bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
2046 assert(Lex.getKind() == lltok::lbrace);
2047 Lex.Lex(); // Consume the '{'
2049 // Handle the empty struct.
2050 if (EatIfPresent(lltok::rbrace))
2053 LocTy EltTyLoc = Lex.getLoc();
2055 if (ParseType(Ty)) return true;
2058 if (!StructType::isValidElementType(Ty))
2059 return Error(EltTyLoc, "invalid element type for struct");
2061 while (EatIfPresent(lltok::comma)) {
2062 EltTyLoc = Lex.getLoc();
2063 if (ParseType(Ty)) return true;
2065 if (!StructType::isValidElementType(Ty))
2066 return Error(EltTyLoc, "invalid element type for struct");
2071 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
2074 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
2075 /// token has already been consumed.
2077 /// ::= '[' APSINTVAL 'x' Types ']'
2078 /// ::= '<' APSINTVAL 'x' Types '>'
2079 bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
2080 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
2081 Lex.getAPSIntVal().getBitWidth() > 64)
2082 return TokError("expected number in address space");
2084 LocTy SizeLoc = Lex.getLoc();
2085 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
2088 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
2091 LocTy TypeLoc = Lex.getLoc();
2092 Type *EltTy = nullptr;
2093 if (ParseType(EltTy)) return true;
2095 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
2096 "expected end of sequential type"))
2101 return Error(SizeLoc, "zero element vector is illegal");
2102 if ((unsigned)Size != Size)
2103 return Error(SizeLoc, "size too large for vector");
2104 if (!VectorType::isValidElementType(EltTy))
2105 return Error(TypeLoc, "invalid vector element type");
2106 Result = VectorType::get(EltTy, unsigned(Size));
2108 if (!ArrayType::isValidElementType(EltTy))
2109 return Error(TypeLoc, "invalid array element type");
2110 Result = ArrayType::get(EltTy, Size);
2115 //===----------------------------------------------------------------------===//
2116 // Function Semantic Analysis.
2117 //===----------------------------------------------------------------------===//
2119 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
2121 : P(p), F(f), FunctionNumber(functionNumber) {
2123 // Insert unnamed arguments into the NumberedVals list.
2124 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
2127 NumberedVals.push_back(AI);
2130 LLParser::PerFunctionState::~PerFunctionState() {
2131 // If there were any forward referenced non-basicblock values, delete them.
2132 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
2133 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
2134 if (!isa<BasicBlock>(I->second.first)) {
2135 I->second.first->replaceAllUsesWith(
2136 UndefValue::get(I->second.first->getType()));
2137 delete I->second.first;
2138 I->second.first = nullptr;
2141 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2142 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
2143 if (!isa<BasicBlock>(I->second.first)) {
2144 I->second.first->replaceAllUsesWith(
2145 UndefValue::get(I->second.first->getType()));
2146 delete I->second.first;
2147 I->second.first = nullptr;
2151 bool LLParser::PerFunctionState::FinishFunction() {
2152 if (!ForwardRefVals.empty())
2153 return P.Error(ForwardRefVals.begin()->second.second,
2154 "use of undefined value '%" + ForwardRefVals.begin()->first +
2156 if (!ForwardRefValIDs.empty())
2157 return P.Error(ForwardRefValIDs.begin()->second.second,
2158 "use of undefined value '%" +
2159 Twine(ForwardRefValIDs.begin()->first) + "'");
2164 /// GetVal - Get a value with the specified name or ID, creating a
2165 /// forward reference record if needed. This can return null if the value
2166 /// exists but does not have the right type.
2167 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
2168 Type *Ty, LocTy Loc) {
2169 // Look this name up in the normal function symbol table.
2170 Value *Val = F.getValueSymbolTable().lookup(Name);
2172 // If this is a forward reference for the value, see if we already created a
2173 // forward ref record.
2175 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2176 I = ForwardRefVals.find(Name);
2177 if (I != ForwardRefVals.end())
2178 Val = I->second.first;
2181 // If we have the value in the symbol table or fwd-ref table, return it.
2183 if (Val->getType() == Ty) return Val;
2184 if (Ty->isLabelTy())
2185 P.Error(Loc, "'%" + Name + "' is not a basic block");
2187 P.Error(Loc, "'%" + Name + "' defined with type '" +
2188 getTypeString(Val->getType()) + "'");
2192 // Don't make placeholders with invalid type.
2193 if (!Ty->isFirstClassType()) {
2194 P.Error(Loc, "invalid use of a non-first-class type");
2198 // Otherwise, create a new forward reference for this value and remember it.
2200 if (Ty->isLabelTy())
2201 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2203 FwdVal = new Argument(Ty, Name);
2205 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2209 Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty,
2211 // Look this name up in the normal function symbol table.
2212 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
2214 // If this is a forward reference for the value, see if we already created a
2215 // forward ref record.
2217 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2218 I = ForwardRefValIDs.find(ID);
2219 if (I != ForwardRefValIDs.end())
2220 Val = I->second.first;
2223 // If we have the value in the symbol table or fwd-ref table, return it.
2225 if (Val->getType() == Ty) return Val;
2226 if (Ty->isLabelTy())
2227 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
2229 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
2230 getTypeString(Val->getType()) + "'");
2234 if (!Ty->isFirstClassType()) {
2235 P.Error(Loc, "invalid use of a non-first-class type");
2239 // Otherwise, create a new forward reference for this value and remember it.
2241 if (Ty->isLabelTy())
2242 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2244 FwdVal = new Argument(Ty);
2246 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2250 /// SetInstName - After an instruction is parsed and inserted into its
2251 /// basic block, this installs its name.
2252 bool LLParser::PerFunctionState::SetInstName(int NameID,
2253 const std::string &NameStr,
2254 LocTy NameLoc, Instruction *Inst) {
2255 // If this instruction has void type, it cannot have a name or ID specified.
2256 if (Inst->getType()->isVoidTy()) {
2257 if (NameID != -1 || !NameStr.empty())
2258 return P.Error(NameLoc, "instructions returning void cannot have a name");
2262 // If this was a numbered instruction, verify that the instruction is the
2263 // expected value and resolve any forward references.
2264 if (NameStr.empty()) {
2265 // If neither a name nor an ID was specified, just use the next ID.
2267 NameID = NumberedVals.size();
2269 if (unsigned(NameID) != NumberedVals.size())
2270 return P.Error(NameLoc, "instruction expected to be numbered '%" +
2271 Twine(NumberedVals.size()) + "'");
2273 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
2274 ForwardRefValIDs.find(NameID);
2275 if (FI != ForwardRefValIDs.end()) {
2276 if (FI->second.first->getType() != Inst->getType())
2277 return P.Error(NameLoc, "instruction forward referenced with type '" +
2278 getTypeString(FI->second.first->getType()) + "'");
2279 FI->second.first->replaceAllUsesWith(Inst);
2280 delete FI->second.first;
2281 ForwardRefValIDs.erase(FI);
2284 NumberedVals.push_back(Inst);
2288 // Otherwise, the instruction had a name. Resolve forward refs and set it.
2289 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2290 FI = ForwardRefVals.find(NameStr);
2291 if (FI != ForwardRefVals.end()) {
2292 if (FI->second.first->getType() != Inst->getType())
2293 return P.Error(NameLoc, "instruction forward referenced with type '" +
2294 getTypeString(FI->second.first->getType()) + "'");
2295 FI->second.first->replaceAllUsesWith(Inst);
2296 delete FI->second.first;
2297 ForwardRefVals.erase(FI);
2300 // Set the name on the instruction.
2301 Inst->setName(NameStr);
2303 if (Inst->getName() != NameStr)
2304 return P.Error(NameLoc, "multiple definition of local value named '" +
2309 /// GetBB - Get a basic block with the specified name or ID, creating a
2310 /// forward reference record if needed.
2311 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2313 return dyn_cast_or_null<BasicBlock>(GetVal(Name,
2314 Type::getLabelTy(F.getContext()), Loc));
2317 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2318 return dyn_cast_or_null<BasicBlock>(GetVal(ID,
2319 Type::getLabelTy(F.getContext()), Loc));
2322 /// DefineBB - Define the specified basic block, which is either named or
2323 /// unnamed. If there is an error, this returns null otherwise it returns
2324 /// the block being defined.
2325 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2329 BB = GetBB(NumberedVals.size(), Loc);
2331 BB = GetBB(Name, Loc);
2332 if (!BB) return nullptr; // Already diagnosed error.
2334 // Move the block to the end of the function. Forward ref'd blocks are
2335 // inserted wherever they happen to be referenced.
2336 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2338 // Remove the block from forward ref sets.
2340 ForwardRefValIDs.erase(NumberedVals.size());
2341 NumberedVals.push_back(BB);
2343 // BB forward references are already in the function symbol table.
2344 ForwardRefVals.erase(Name);
2350 //===----------------------------------------------------------------------===//
2352 //===----------------------------------------------------------------------===//
2354 /// ParseValID - Parse an abstract value that doesn't necessarily have a
2355 /// type implied. For example, if we parse "4" we don't know what integer type
2356 /// it has. The value will later be combined with its type and checked for
2357 /// sanity. PFS is used to convert function-local operands of metadata (since
2358 /// metadata operands are not just parsed here but also converted to values).
2359 /// PFS can be null when we are not parsing metadata values inside a function.
2360 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2361 ID.Loc = Lex.getLoc();
2362 switch (Lex.getKind()) {
2363 default: return TokError("expected value token");
2364 case lltok::GlobalID: // @42
2365 ID.UIntVal = Lex.getUIntVal();
2366 ID.Kind = ValID::t_GlobalID;
2368 case lltok::GlobalVar: // @foo
2369 ID.StrVal = Lex.getStrVal();
2370 ID.Kind = ValID::t_GlobalName;
2372 case lltok::LocalVarID: // %42
2373 ID.UIntVal = Lex.getUIntVal();
2374 ID.Kind = ValID::t_LocalID;
2376 case lltok::LocalVar: // %foo
2377 ID.StrVal = Lex.getStrVal();
2378 ID.Kind = ValID::t_LocalName;
2381 ID.APSIntVal = Lex.getAPSIntVal();
2382 ID.Kind = ValID::t_APSInt;
2384 case lltok::APFloat:
2385 ID.APFloatVal = Lex.getAPFloatVal();
2386 ID.Kind = ValID::t_APFloat;
2388 case lltok::kw_true:
2389 ID.ConstantVal = ConstantInt::getTrue(Context);
2390 ID.Kind = ValID::t_Constant;
2392 case lltok::kw_false:
2393 ID.ConstantVal = ConstantInt::getFalse(Context);
2394 ID.Kind = ValID::t_Constant;
2396 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2397 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2398 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2400 case lltok::lbrace: {
2401 // ValID ::= '{' ConstVector '}'
2403 SmallVector<Constant*, 16> Elts;
2404 if (ParseGlobalValueVector(Elts) ||
2405 ParseToken(lltok::rbrace, "expected end of struct constant"))
2408 ID.ConstantStructElts = new Constant*[Elts.size()];
2409 ID.UIntVal = Elts.size();
2410 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2411 ID.Kind = ValID::t_ConstantStruct;
2415 // ValID ::= '<' ConstVector '>' --> Vector.
2416 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2418 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2420 SmallVector<Constant*, 16> Elts;
2421 LocTy FirstEltLoc = Lex.getLoc();
2422 if (ParseGlobalValueVector(Elts) ||
2424 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2425 ParseToken(lltok::greater, "expected end of constant"))
2428 if (isPackedStruct) {
2429 ID.ConstantStructElts = new Constant*[Elts.size()];
2430 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2431 ID.UIntVal = Elts.size();
2432 ID.Kind = ValID::t_PackedConstantStruct;
2437 return Error(ID.Loc, "constant vector must not be empty");
2439 if (!Elts[0]->getType()->isIntegerTy() &&
2440 !Elts[0]->getType()->isFloatingPointTy() &&
2441 !Elts[0]->getType()->isPointerTy())
2442 return Error(FirstEltLoc,
2443 "vector elements must have integer, pointer or floating point type");
2445 // Verify that all the vector elements have the same type.
2446 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2447 if (Elts[i]->getType() != Elts[0]->getType())
2448 return Error(FirstEltLoc,
2449 "vector element #" + Twine(i) +
2450 " is not of type '" + getTypeString(Elts[0]->getType()));
2452 ID.ConstantVal = ConstantVector::get(Elts);
2453 ID.Kind = ValID::t_Constant;
2456 case lltok::lsquare: { // Array Constant
2458 SmallVector<Constant*, 16> Elts;
2459 LocTy FirstEltLoc = Lex.getLoc();
2460 if (ParseGlobalValueVector(Elts) ||
2461 ParseToken(lltok::rsquare, "expected end of array constant"))
2464 // Handle empty element.
2466 // Use undef instead of an array because it's inconvenient to determine
2467 // the element type at this point, there being no elements to examine.
2468 ID.Kind = ValID::t_EmptyArray;
2472 if (!Elts[0]->getType()->isFirstClassType())
2473 return Error(FirstEltLoc, "invalid array element type: " +
2474 getTypeString(Elts[0]->getType()));
2476 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2478 // Verify all elements are correct type!
2479 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2480 if (Elts[i]->getType() != Elts[0]->getType())
2481 return Error(FirstEltLoc,
2482 "array element #" + Twine(i) +
2483 " is not of type '" + getTypeString(Elts[0]->getType()));
2486 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2487 ID.Kind = ValID::t_Constant;
2490 case lltok::kw_c: // c "foo"
2492 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2494 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2495 ID.Kind = ValID::t_Constant;
2498 case lltok::kw_asm: {
2499 // ValID ::= 'asm' SideEffect? AlignStack? IntelDialect? STRINGCONSTANT ','
2501 bool HasSideEffect, AlignStack, AsmDialect;
2503 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2504 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2505 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2506 ParseStringConstant(ID.StrVal) ||
2507 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2508 ParseToken(lltok::StringConstant, "expected constraint string"))
2510 ID.StrVal2 = Lex.getStrVal();
2511 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2512 (unsigned(AsmDialect)<<2);
2513 ID.Kind = ValID::t_InlineAsm;
2517 case lltok::kw_blockaddress: {
2518 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2523 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2525 ParseToken(lltok::comma, "expected comma in block address expression")||
2526 ParseValID(Label) ||
2527 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2530 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2531 return Error(Fn.Loc, "expected function name in blockaddress");
2532 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2533 return Error(Label.Loc, "expected basic block name in blockaddress");
2535 // Try to find the function (but skip it if it's forward-referenced).
2536 GlobalValue *GV = nullptr;
2537 if (Fn.Kind == ValID::t_GlobalID) {
2538 if (Fn.UIntVal < NumberedVals.size())
2539 GV = NumberedVals[Fn.UIntVal];
2540 } else if (!ForwardRefVals.count(Fn.StrVal)) {
2541 GV = M->getNamedValue(Fn.StrVal);
2543 Function *F = nullptr;
2545 // Confirm that it's actually a function with a definition.
2546 if (!isa<Function>(GV))
2547 return Error(Fn.Loc, "expected function name in blockaddress");
2548 F = cast<Function>(GV);
2549 if (F->isDeclaration())
2550 return Error(Fn.Loc, "cannot take blockaddress inside a declaration");
2554 // Make a global variable as a placeholder for this reference.
2555 GlobalValue *&FwdRef =
2556 ForwardRefBlockAddresses.insert(std::make_pair(
2558 std::map<ValID, GlobalValue *>()))
2559 .first->second.insert(std::make_pair(std::move(Label), nullptr))
2562 FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context), false,
2563 GlobalValue::InternalLinkage, nullptr, "");
2564 ID.ConstantVal = FwdRef;
2565 ID.Kind = ValID::t_Constant;
2569 // We found the function; now find the basic block. Don't use PFS, since we
2570 // might be inside a constant expression.
2572 if (BlockAddressPFS && F == &BlockAddressPFS->getFunction()) {
2573 if (Label.Kind == ValID::t_LocalID)
2574 BB = BlockAddressPFS->GetBB(Label.UIntVal, Label.Loc);
2576 BB = BlockAddressPFS->GetBB(Label.StrVal, Label.Loc);
2578 return Error(Label.Loc, "referenced value is not a basic block");
2580 if (Label.Kind == ValID::t_LocalID)
2581 return Error(Label.Loc, "cannot take address of numeric label after "
2582 "the function is defined");
2583 BB = dyn_cast_or_null<BasicBlock>(
2584 F->getValueSymbolTable().lookup(Label.StrVal));
2586 return Error(Label.Loc, "referenced value is not a basic block");
2589 ID.ConstantVal = BlockAddress::get(F, BB);
2590 ID.Kind = ValID::t_Constant;
2594 case lltok::kw_trunc:
2595 case lltok::kw_zext:
2596 case lltok::kw_sext:
2597 case lltok::kw_fptrunc:
2598 case lltok::kw_fpext:
2599 case lltok::kw_bitcast:
2600 case lltok::kw_addrspacecast:
2601 case lltok::kw_uitofp:
2602 case lltok::kw_sitofp:
2603 case lltok::kw_fptoui:
2604 case lltok::kw_fptosi:
2605 case lltok::kw_inttoptr:
2606 case lltok::kw_ptrtoint: {
2607 unsigned Opc = Lex.getUIntVal();
2608 Type *DestTy = nullptr;
2611 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2612 ParseGlobalTypeAndValue(SrcVal) ||
2613 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2614 ParseType(DestTy) ||
2615 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2617 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2618 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2619 getTypeString(SrcVal->getType()) + "' to '" +
2620 getTypeString(DestTy) + "'");
2621 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2623 ID.Kind = ValID::t_Constant;
2626 case lltok::kw_extractvalue: {
2629 SmallVector<unsigned, 4> Indices;
2630 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2631 ParseGlobalTypeAndValue(Val) ||
2632 ParseIndexList(Indices) ||
2633 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2636 if (!Val->getType()->isAggregateType())
2637 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2638 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
2639 return Error(ID.Loc, "invalid indices for extractvalue");
2640 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
2641 ID.Kind = ValID::t_Constant;
2644 case lltok::kw_insertvalue: {
2646 Constant *Val0, *Val1;
2647 SmallVector<unsigned, 4> Indices;
2648 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2649 ParseGlobalTypeAndValue(Val0) ||
2650 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2651 ParseGlobalTypeAndValue(Val1) ||
2652 ParseIndexList(Indices) ||
2653 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2655 if (!Val0->getType()->isAggregateType())
2656 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2658 ExtractValueInst::getIndexedType(Val0->getType(), Indices);
2660 return Error(ID.Loc, "invalid indices for insertvalue");
2661 if (IndexedType != Val1->getType())
2662 return Error(ID.Loc, "insertvalue operand and field disagree in type: '" +
2663 getTypeString(Val1->getType()) +
2664 "' instead of '" + getTypeString(IndexedType) +
2666 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
2667 ID.Kind = ValID::t_Constant;
2670 case lltok::kw_icmp:
2671 case lltok::kw_fcmp: {
2672 unsigned PredVal, Opc = Lex.getUIntVal();
2673 Constant *Val0, *Val1;
2675 if (ParseCmpPredicate(PredVal, Opc) ||
2676 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2677 ParseGlobalTypeAndValue(Val0) ||
2678 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2679 ParseGlobalTypeAndValue(Val1) ||
2680 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2683 if (Val0->getType() != Val1->getType())
2684 return Error(ID.Loc, "compare operands must have the same type");
2686 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2688 if (Opc == Instruction::FCmp) {
2689 if (!Val0->getType()->isFPOrFPVectorTy())
2690 return Error(ID.Loc, "fcmp requires floating point operands");
2691 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2693 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2694 if (!Val0->getType()->isIntOrIntVectorTy() &&
2695 !Val0->getType()->getScalarType()->isPointerTy())
2696 return Error(ID.Loc, "icmp requires pointer or integer operands");
2697 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2699 ID.Kind = ValID::t_Constant;
2703 // Binary Operators.
2705 case lltok::kw_fadd:
2707 case lltok::kw_fsub:
2709 case lltok::kw_fmul:
2710 case lltok::kw_udiv:
2711 case lltok::kw_sdiv:
2712 case lltok::kw_fdiv:
2713 case lltok::kw_urem:
2714 case lltok::kw_srem:
2715 case lltok::kw_frem:
2717 case lltok::kw_lshr:
2718 case lltok::kw_ashr: {
2722 unsigned Opc = Lex.getUIntVal();
2723 Constant *Val0, *Val1;
2725 LocTy ModifierLoc = Lex.getLoc();
2726 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
2727 Opc == Instruction::Mul || Opc == Instruction::Shl) {
2728 if (EatIfPresent(lltok::kw_nuw))
2730 if (EatIfPresent(lltok::kw_nsw)) {
2732 if (EatIfPresent(lltok::kw_nuw))
2735 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
2736 Opc == Instruction::LShr || Opc == Instruction::AShr) {
2737 if (EatIfPresent(lltok::kw_exact))
2740 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2741 ParseGlobalTypeAndValue(Val0) ||
2742 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2743 ParseGlobalTypeAndValue(Val1) ||
2744 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2746 if (Val0->getType() != Val1->getType())
2747 return Error(ID.Loc, "operands of constexpr must have same type");
2748 if (!Val0->getType()->isIntOrIntVectorTy()) {
2750 return Error(ModifierLoc, "nuw only applies to integer operations");
2752 return Error(ModifierLoc, "nsw only applies to integer operations");
2754 // Check that the type is valid for the operator.
2756 case Instruction::Add:
2757 case Instruction::Sub:
2758 case Instruction::Mul:
2759 case Instruction::UDiv:
2760 case Instruction::SDiv:
2761 case Instruction::URem:
2762 case Instruction::SRem:
2763 case Instruction::Shl:
2764 case Instruction::AShr:
2765 case Instruction::LShr:
2766 if (!Val0->getType()->isIntOrIntVectorTy())
2767 return Error(ID.Loc, "constexpr requires integer operands");
2769 case Instruction::FAdd:
2770 case Instruction::FSub:
2771 case Instruction::FMul:
2772 case Instruction::FDiv:
2773 case Instruction::FRem:
2774 if (!Val0->getType()->isFPOrFPVectorTy())
2775 return Error(ID.Loc, "constexpr requires fp operands");
2777 default: llvm_unreachable("Unknown binary operator!");
2780 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2781 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2782 if (Exact) Flags |= PossiblyExactOperator::IsExact;
2783 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2785 ID.Kind = ValID::t_Constant;
2789 // Logical Operations
2792 case lltok::kw_xor: {
2793 unsigned Opc = Lex.getUIntVal();
2794 Constant *Val0, *Val1;
2796 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2797 ParseGlobalTypeAndValue(Val0) ||
2798 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2799 ParseGlobalTypeAndValue(Val1) ||
2800 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2802 if (Val0->getType() != Val1->getType())
2803 return Error(ID.Loc, "operands of constexpr must have same type");
2804 if (!Val0->getType()->isIntOrIntVectorTy())
2805 return Error(ID.Loc,
2806 "constexpr requires integer or integer vector operands");
2807 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2808 ID.Kind = ValID::t_Constant;
2812 case lltok::kw_getelementptr:
2813 case lltok::kw_shufflevector:
2814 case lltok::kw_insertelement:
2815 case lltok::kw_extractelement:
2816 case lltok::kw_select: {
2817 unsigned Opc = Lex.getUIntVal();
2818 SmallVector<Constant*, 16> Elts;
2819 bool InBounds = false;
2823 if (Opc == Instruction::GetElementPtr)
2824 InBounds = EatIfPresent(lltok::kw_inbounds);
2826 if (ParseToken(lltok::lparen, "expected '(' in constantexpr"))
2829 LocTy ExplicitTypeLoc = Lex.getLoc();
2830 if (Opc == Instruction::GetElementPtr) {
2831 if (ParseType(Ty) ||
2832 ParseToken(lltok::comma, "expected comma after getelementptr's type"))
2836 if (ParseGlobalValueVector(Elts) ||
2837 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2840 if (Opc == Instruction::GetElementPtr) {
2841 if (Elts.size() == 0 ||
2842 !Elts[0]->getType()->getScalarType()->isPointerTy())
2843 return Error(ID.Loc, "base of getelementptr must be a pointer");
2845 Type *BaseType = Elts[0]->getType();
2846 auto *BasePointerType = cast<PointerType>(BaseType->getScalarType());
2847 if (Ty != BasePointerType->getElementType())
2850 "explicit pointee type doesn't match operand's pointee type");
2852 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
2853 for (Constant *Val : Indices) {
2854 Type *ValTy = Val->getType();
2855 if (!ValTy->getScalarType()->isIntegerTy())
2856 return Error(ID.Loc, "getelementptr index must be an integer");
2857 if (ValTy->isVectorTy() != BaseType->isVectorTy())
2858 return Error(ID.Loc, "getelementptr index type missmatch");
2859 if (ValTy->isVectorTy()) {
2860 unsigned ValNumEl = cast<VectorType>(ValTy)->getNumElements();
2861 unsigned PtrNumEl = cast<VectorType>(BaseType)->getNumElements();
2862 if (ValNumEl != PtrNumEl)
2865 "getelementptr vector index has a wrong number of elements");
2869 SmallPtrSet<const Type*, 4> Visited;
2870 if (!Indices.empty() && !Ty->isSized(&Visited))
2871 return Error(ID.Loc, "base element of getelementptr must be sized");
2873 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
2874 return Error(ID.Loc, "invalid getelementptr indices");
2876 ConstantExpr::getGetElementPtr(Ty, Elts[0], Indices, InBounds);
2877 } else if (Opc == Instruction::Select) {
2878 if (Elts.size() != 3)
2879 return Error(ID.Loc, "expected three operands to select");
2880 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2882 return Error(ID.Loc, Reason);
2883 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2884 } else if (Opc == Instruction::ShuffleVector) {
2885 if (Elts.size() != 3)
2886 return Error(ID.Loc, "expected three operands to shufflevector");
2887 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2888 return Error(ID.Loc, "invalid operands to shufflevector");
2890 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2891 } else if (Opc == Instruction::ExtractElement) {
2892 if (Elts.size() != 2)
2893 return Error(ID.Loc, "expected two operands to extractelement");
2894 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2895 return Error(ID.Loc, "invalid extractelement operands");
2896 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2898 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2899 if (Elts.size() != 3)
2900 return Error(ID.Loc, "expected three operands to insertelement");
2901 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2902 return Error(ID.Loc, "invalid insertelement operands");
2904 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2907 ID.Kind = ValID::t_Constant;
2916 /// ParseGlobalValue - Parse a global value with the specified type.
2917 bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
2921 bool Parsed = ParseValID(ID) ||
2922 ConvertValIDToValue(Ty, ID, V, nullptr);
2923 if (V && !(C = dyn_cast<Constant>(V)))
2924 return Error(ID.Loc, "global values must be constants");
2928 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2930 return ParseType(Ty) ||
2931 ParseGlobalValue(Ty, V);
2934 bool LLParser::parseOptionalComdat(StringRef GlobalName, Comdat *&C) {
2937 LocTy KwLoc = Lex.getLoc();
2938 if (!EatIfPresent(lltok::kw_comdat))
2941 if (EatIfPresent(lltok::lparen)) {
2942 if (Lex.getKind() != lltok::ComdatVar)
2943 return TokError("expected comdat variable");
2944 C = getComdat(Lex.getStrVal(), Lex.getLoc());
2946 if (ParseToken(lltok::rparen, "expected ')' after comdat var"))
2949 if (GlobalName.empty())
2950 return TokError("comdat cannot be unnamed");
2951 C = getComdat(GlobalName, KwLoc);
2957 /// ParseGlobalValueVector
2959 /// ::= TypeAndValue (',' TypeAndValue)*
2960 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant *> &Elts) {
2962 if (Lex.getKind() == lltok::rbrace ||
2963 Lex.getKind() == lltok::rsquare ||
2964 Lex.getKind() == lltok::greater ||
2965 Lex.getKind() == lltok::rparen)
2969 if (ParseGlobalTypeAndValue(C)) return true;
2972 while (EatIfPresent(lltok::comma)) {
2973 if (ParseGlobalTypeAndValue(C)) return true;
2980 bool LLParser::ParseMDTuple(MDNode *&MD, bool IsDistinct) {
2981 SmallVector<Metadata *, 16> Elts;
2982 if (ParseMDNodeVector(Elts))
2985 MD = (IsDistinct ? MDTuple::getDistinct : MDTuple::get)(Context, Elts);
2992 /// ::= !DILocation(...)
2993 bool LLParser::ParseMDNode(MDNode *&N) {
2994 if (Lex.getKind() == lltok::MetadataVar)
2995 return ParseSpecializedMDNode(N);
2997 return ParseToken(lltok::exclaim, "expected '!' here") ||
3001 bool LLParser::ParseMDNodeTail(MDNode *&N) {
3003 if (Lex.getKind() == lltok::lbrace)
3004 return ParseMDTuple(N);
3007 return ParseMDNodeID(N);
3012 /// Structure to represent an optional metadata field.
3013 template <class FieldTy> struct MDFieldImpl {
3014 typedef MDFieldImpl ImplTy;
3018 void assign(FieldTy Val) {
3020 this->Val = std::move(Val);
3023 explicit MDFieldImpl(FieldTy Default)
3024 : Val(std::move(Default)), Seen(false) {}
3027 struct MDUnsignedField : public MDFieldImpl<uint64_t> {
3030 MDUnsignedField(uint64_t Default = 0, uint64_t Max = UINT64_MAX)
3031 : ImplTy(Default), Max(Max) {}
3033 struct LineField : public MDUnsignedField {
3034 LineField() : MDUnsignedField(0, UINT32_MAX) {}
3036 struct ColumnField : public MDUnsignedField {
3037 ColumnField() : MDUnsignedField(0, UINT16_MAX) {}
3039 struct DwarfTagField : public MDUnsignedField {
3040 DwarfTagField() : MDUnsignedField(0, dwarf::DW_TAG_hi_user) {}
3041 DwarfTagField(dwarf::Tag DefaultTag)
3042 : MDUnsignedField(DefaultTag, dwarf::DW_TAG_hi_user) {}
3044 struct DwarfAttEncodingField : public MDUnsignedField {
3045 DwarfAttEncodingField() : MDUnsignedField(0, dwarf::DW_ATE_hi_user) {}
3047 struct DwarfVirtualityField : public MDUnsignedField {
3048 DwarfVirtualityField() : MDUnsignedField(0, dwarf::DW_VIRTUALITY_max) {}
3050 struct DwarfLangField : public MDUnsignedField {
3051 DwarfLangField() : MDUnsignedField(0, dwarf::DW_LANG_hi_user) {}
3054 struct DIFlagField : public MDUnsignedField {
3055 DIFlagField() : MDUnsignedField(0, UINT32_MAX) {}
3058 struct MDSignedField : public MDFieldImpl<int64_t> {
3062 MDSignedField(int64_t Default = 0)
3063 : ImplTy(Default), Min(INT64_MIN), Max(INT64_MAX) {}
3064 MDSignedField(int64_t Default, int64_t Min, int64_t Max)
3065 : ImplTy(Default), Min(Min), Max(Max) {}
3068 struct MDBoolField : public MDFieldImpl<bool> {
3069 MDBoolField(bool Default = false) : ImplTy(Default) {}
3071 struct MDField : public MDFieldImpl<Metadata *> {
3074 MDField(bool AllowNull = true) : ImplTy(nullptr), AllowNull(AllowNull) {}
3076 struct MDConstant : public MDFieldImpl<ConstantAsMetadata *> {
3077 MDConstant() : ImplTy(nullptr) {}
3079 struct MDStringField : public MDFieldImpl<MDString *> {
3081 MDStringField(bool AllowEmpty = true)
3082 : ImplTy(nullptr), AllowEmpty(AllowEmpty) {}
3084 struct MDFieldList : public MDFieldImpl<SmallVector<Metadata *, 4>> {
3085 MDFieldList() : ImplTy(SmallVector<Metadata *, 4>()) {}
3093 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3094 MDUnsignedField &Result) {
3095 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
3096 return TokError("expected unsigned integer");
3098 auto &U = Lex.getAPSIntVal();
3099 if (U.ugt(Result.Max))
3100 return TokError("value for '" + Name + "' too large, limit is " +
3102 Result.assign(U.getZExtValue());
3103 assert(Result.Val <= Result.Max && "Expected value in range");
3109 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, LineField &Result) {
3110 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3113 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, ColumnField &Result) {
3114 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3118 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfTagField &Result) {
3119 if (Lex.getKind() == lltok::APSInt)
3120 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3122 if (Lex.getKind() != lltok::DwarfTag)
3123 return TokError("expected DWARF tag");
3125 unsigned Tag = dwarf::getTag(Lex.getStrVal());
3126 if (Tag == dwarf::DW_TAG_invalid)
3127 return TokError("invalid DWARF tag" + Twine(" '") + Lex.getStrVal() + "'");
3128 assert(Tag <= Result.Max && "Expected valid DWARF tag");
3136 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3137 DwarfVirtualityField &Result) {
3138 if (Lex.getKind() == lltok::APSInt)
3139 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3141 if (Lex.getKind() != lltok::DwarfVirtuality)
3142 return TokError("expected DWARF virtuality code");
3144 unsigned Virtuality = dwarf::getVirtuality(Lex.getStrVal());
3146 return TokError("invalid DWARF virtuality code" + Twine(" '") +
3147 Lex.getStrVal() + "'");
3148 assert(Virtuality <= Result.Max && "Expected valid DWARF virtuality code");
3149 Result.assign(Virtuality);
3155 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfLangField &Result) {
3156 if (Lex.getKind() == lltok::APSInt)
3157 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3159 if (Lex.getKind() != lltok::DwarfLang)
3160 return TokError("expected DWARF language");
3162 unsigned Lang = dwarf::getLanguage(Lex.getStrVal());
3164 return TokError("invalid DWARF language" + Twine(" '") + Lex.getStrVal() +
3166 assert(Lang <= Result.Max && "Expected valid DWARF language");
3167 Result.assign(Lang);
3173 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3174 DwarfAttEncodingField &Result) {
3175 if (Lex.getKind() == lltok::APSInt)
3176 return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3178 if (Lex.getKind() != lltok::DwarfAttEncoding)
3179 return TokError("expected DWARF type attribute encoding");
3181 unsigned Encoding = dwarf::getAttributeEncoding(Lex.getStrVal());
3183 return TokError("invalid DWARF type attribute encoding" + Twine(" '") +
3184 Lex.getStrVal() + "'");
3185 assert(Encoding <= Result.Max && "Expected valid DWARF language");
3186 Result.assign(Encoding);
3193 /// ::= DIFlagVector
3194 /// ::= DIFlagVector '|' DIFlagFwdDecl '|' uint32 '|' DIFlagPublic
3196 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DIFlagField &Result) {
3197 assert(Result.Max == UINT32_MAX && "Expected only 32-bits");
3199 // Parser for a single flag.
3200 auto parseFlag = [&](unsigned &Val) {
3201 if (Lex.getKind() == lltok::APSInt && !Lex.getAPSIntVal().isSigned())
3202 return ParseUInt32(Val);
3204 if (Lex.getKind() != lltok::DIFlag)
3205 return TokError("expected debug info flag");
3207 Val = DINode::getFlag(Lex.getStrVal());
3209 return TokError(Twine("invalid debug info flag flag '") +
3210 Lex.getStrVal() + "'");
3215 // Parse the flags and combine them together.
3216 unsigned Combined = 0;
3222 } while (EatIfPresent(lltok::bar));
3224 Result.assign(Combined);
3229 bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3230 MDSignedField &Result) {
3231 if (Lex.getKind() != lltok::APSInt)
3232 return TokError("expected signed integer");
3234 auto &S = Lex.getAPSIntVal();
3236 return TokError("value for '" + Name + "' too small, limit is " +
3239 return TokError("value for '" + Name + "' too large, limit is " +
3241 Result.assign(S.getExtValue());
3242 assert(Result.Val >= Result.Min && "Expected value in range");
3243 assert(Result.Val <= Result.Max && "Expected value in range");
3249 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDBoolField &Result) {
3250 switch (Lex.getKind()) {
3252 return TokError("expected 'true' or 'false'");
3253 case lltok::kw_true:
3254 Result.assign(true);
3256 case lltok::kw_false:
3257 Result.assign(false);
3265 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDField &Result) {
3266 if (Lex.getKind() == lltok::kw_null) {
3267 if (!Result.AllowNull)
3268 return TokError("'" + Name + "' cannot be null");
3270 Result.assign(nullptr);
3275 if (ParseMetadata(MD, nullptr))
3283 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDConstant &Result) {
3285 if (ParseValueAsMetadata(MD, "expected constant", nullptr))
3288 Result.assign(cast<ConstantAsMetadata>(MD));
3293 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDStringField &Result) {
3294 LocTy ValueLoc = Lex.getLoc();
3296 if (ParseStringConstant(S))
3299 if (!Result.AllowEmpty && S.empty())
3300 return Error(ValueLoc, "'" + Name + "' cannot be empty");
3302 Result.assign(S.empty() ? nullptr : MDString::get(Context, S));
3307 bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDFieldList &Result) {
3308 SmallVector<Metadata *, 4> MDs;
3309 if (ParseMDNodeVector(MDs))
3312 Result.assign(std::move(MDs));
3316 } // end namespace llvm
3318 template <class ParserTy>
3319 bool LLParser::ParseMDFieldsImplBody(ParserTy parseField) {
3321 if (Lex.getKind() != lltok::LabelStr)
3322 return TokError("expected field label here");
3326 } while (EatIfPresent(lltok::comma));
3331 template <class ParserTy>
3332 bool LLParser::ParseMDFieldsImpl(ParserTy parseField, LocTy &ClosingLoc) {
3333 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3336 if (ParseToken(lltok::lparen, "expected '(' here"))
3338 if (Lex.getKind() != lltok::rparen)
3339 if (ParseMDFieldsImplBody(parseField))
3342 ClosingLoc = Lex.getLoc();
3343 return ParseToken(lltok::rparen, "expected ')' here");
3346 template <class FieldTy>
3347 bool LLParser::ParseMDField(StringRef Name, FieldTy &Result) {
3349 return TokError("field '" + Name + "' cannot be specified more than once");
3351 LocTy Loc = Lex.getLoc();
3353 return ParseMDField(Loc, Name, Result);
3356 bool LLParser::ParseSpecializedMDNode(MDNode *&N, bool IsDistinct) {
3357 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3359 #define HANDLE_SPECIALIZED_MDNODE_LEAF(CLASS) \
3360 if (Lex.getStrVal() == #CLASS) \
3361 return Parse##CLASS(N, IsDistinct);
3362 #include "llvm/IR/Metadata.def"
3364 return TokError("expected metadata type");
3367 #define DECLARE_FIELD(NAME, TYPE, INIT) TYPE NAME INIT
3368 #define NOP_FIELD(NAME, TYPE, INIT)
3369 #define REQUIRE_FIELD(NAME, TYPE, INIT) \
3371 return Error(ClosingLoc, "missing required field '" #NAME "'");
3372 #define PARSE_MD_FIELD(NAME, TYPE, DEFAULT) \
3373 if (Lex.getStrVal() == #NAME) \
3374 return ParseMDField(#NAME, NAME);
3375 #define PARSE_MD_FIELDS() \
3376 VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) \
3379 if (ParseMDFieldsImpl([&]() -> bool { \
3380 VISIT_MD_FIELDS(PARSE_MD_FIELD, PARSE_MD_FIELD) \
3381 return TokError(Twine("invalid field '") + Lex.getStrVal() + "'"); \
3384 VISIT_MD_FIELDS(NOP_FIELD, REQUIRE_FIELD) \
3386 #define GET_OR_DISTINCT(CLASS, ARGS) \
3387 (IsDistinct ? CLASS::getDistinct ARGS : CLASS::get ARGS)
3389 /// ParseDILocationFields:
3390 /// ::= !DILocation(line: 43, column: 8, scope: !5, inlinedAt: !6)
3391 bool LLParser::ParseDILocation(MDNode *&Result, bool IsDistinct) {
3392 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3393 OPTIONAL(line, LineField, ); \
3394 OPTIONAL(column, ColumnField, ); \
3395 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3396 OPTIONAL(inlinedAt, MDField, );
3398 #undef VISIT_MD_FIELDS
3400 Result = GET_OR_DISTINCT(
3401 DILocation, (Context, line.Val, column.Val, scope.Val, inlinedAt.Val));
3405 /// ParseGenericDINode:
3406 /// ::= !GenericDINode(tag: 15, header: "...", operands: {...})
3407 bool LLParser::ParseGenericDINode(MDNode *&Result, bool IsDistinct) {
3408 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3409 REQUIRED(tag, DwarfTagField, ); \
3410 OPTIONAL(header, MDStringField, ); \
3411 OPTIONAL(operands, MDFieldList, );
3413 #undef VISIT_MD_FIELDS
3415 Result = GET_OR_DISTINCT(GenericDINode,
3416 (Context, tag.Val, header.Val, operands.Val));
3420 /// ParseDISubrange:
3421 /// ::= !DISubrange(count: 30, lowerBound: 2)
3422 bool LLParser::ParseDISubrange(MDNode *&Result, bool IsDistinct) {
3423 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3424 REQUIRED(count, MDSignedField, (-1, -1, INT64_MAX)); \
3425 OPTIONAL(lowerBound, MDSignedField, );
3427 #undef VISIT_MD_FIELDS
3429 Result = GET_OR_DISTINCT(DISubrange, (Context, count.Val, lowerBound.Val));
3433 /// ParseDIEnumerator:
3434 /// ::= !DIEnumerator(value: 30, name: "SomeKind")
3435 bool LLParser::ParseDIEnumerator(MDNode *&Result, bool IsDistinct) {
3436 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3437 REQUIRED(name, MDStringField, ); \
3438 REQUIRED(value, MDSignedField, );
3440 #undef VISIT_MD_FIELDS
3442 Result = GET_OR_DISTINCT(DIEnumerator, (Context, value.Val, name.Val));
3446 /// ParseDIBasicType:
3447 /// ::= !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32)
3448 bool LLParser::ParseDIBasicType(MDNode *&Result, bool IsDistinct) {
3449 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3450 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_base_type)); \
3451 OPTIONAL(name, MDStringField, ); \
3452 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3453 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3454 OPTIONAL(encoding, DwarfAttEncodingField, );
3456 #undef VISIT_MD_FIELDS
3458 Result = GET_OR_DISTINCT(DIBasicType, (Context, tag.Val, name.Val, size.Val,
3459 align.Val, encoding.Val));
3463 /// ParseDIDerivedType:
3464 /// ::= !DIDerivedType(tag: DW_TAG_pointer_type, name: "int", file: !0,
3465 /// line: 7, scope: !1, baseType: !2, size: 32,
3466 /// align: 32, offset: 0, flags: 0, extraData: !3)
3467 bool LLParser::ParseDIDerivedType(MDNode *&Result, bool IsDistinct) {
3468 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3469 REQUIRED(tag, DwarfTagField, ); \
3470 OPTIONAL(name, MDStringField, ); \
3471 OPTIONAL(file, MDField, ); \
3472 OPTIONAL(line, LineField, ); \
3473 OPTIONAL(scope, MDField, ); \
3474 REQUIRED(baseType, MDField, ); \
3475 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3476 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3477 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX)); \
3478 OPTIONAL(flags, DIFlagField, ); \
3479 OPTIONAL(extraData, MDField, );
3481 #undef VISIT_MD_FIELDS
3483 Result = GET_OR_DISTINCT(DIDerivedType,
3484 (Context, tag.Val, name.Val, file.Val, line.Val,
3485 scope.Val, baseType.Val, size.Val, align.Val,
3486 offset.Val, flags.Val, extraData.Val));
3490 bool LLParser::ParseDICompositeType(MDNode *&Result, bool IsDistinct) {
3491 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3492 REQUIRED(tag, DwarfTagField, ); \
3493 OPTIONAL(name, MDStringField, ); \
3494 OPTIONAL(file, MDField, ); \
3495 OPTIONAL(line, LineField, ); \
3496 OPTIONAL(scope, MDField, ); \
3497 OPTIONAL(baseType, MDField, ); \
3498 OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3499 OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3500 OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX)); \
3501 OPTIONAL(flags, DIFlagField, ); \
3502 OPTIONAL(elements, MDField, ); \
3503 OPTIONAL(runtimeLang, DwarfLangField, ); \
3504 OPTIONAL(vtableHolder, MDField, ); \
3505 OPTIONAL(templateParams, MDField, ); \
3506 OPTIONAL(identifier, MDStringField, );
3508 #undef VISIT_MD_FIELDS
3510 Result = GET_OR_DISTINCT(
3512 (Context, tag.Val, name.Val, file.Val, line.Val, scope.Val, baseType.Val,
3513 size.Val, align.Val, offset.Val, flags.Val, elements.Val,
3514 runtimeLang.Val, vtableHolder.Val, templateParams.Val, identifier.Val));
3518 bool LLParser::ParseDISubroutineType(MDNode *&Result, bool IsDistinct) {
3519 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3520 OPTIONAL(flags, DIFlagField, ); \
3521 REQUIRED(types, MDField, );
3523 #undef VISIT_MD_FIELDS
3525 Result = GET_OR_DISTINCT(DISubroutineType, (Context, flags.Val, types.Val));
3529 /// ParseDIFileType:
3530 /// ::= !DIFileType(filename: "path/to/file", directory: "/path/to/dir")
3531 bool LLParser::ParseDIFile(MDNode *&Result, bool IsDistinct) {
3532 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3533 REQUIRED(filename, MDStringField, ); \
3534 REQUIRED(directory, MDStringField, );
3536 #undef VISIT_MD_FIELDS
3538 Result = GET_OR_DISTINCT(DIFile, (Context, filename.Val, directory.Val));
3542 /// ParseDICompileUnit:
3543 /// ::= !DICompileUnit(language: DW_LANG_C99, file: !0, producer: "clang",
3544 /// isOptimized: true, flags: "-O2", runtimeVersion: 1,
3545 /// splitDebugFilename: "abc.debug", emissionKind: 1,
3546 /// enums: !1, retainedTypes: !2, subprograms: !3,
3547 /// globals: !4, imports: !5, dwoId: 0x0abcd)
3548 bool LLParser::ParseDICompileUnit(MDNode *&Result, bool IsDistinct) {
3549 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3550 REQUIRED(language, DwarfLangField, ); \
3551 REQUIRED(file, MDField, (/* AllowNull */ false)); \
3552 OPTIONAL(producer, MDStringField, ); \
3553 OPTIONAL(isOptimized, MDBoolField, ); \
3554 OPTIONAL(flags, MDStringField, ); \
3555 OPTIONAL(runtimeVersion, MDUnsignedField, (0, UINT32_MAX)); \
3556 OPTIONAL(splitDebugFilename, MDStringField, ); \
3557 OPTIONAL(emissionKind, MDUnsignedField, (0, UINT32_MAX)); \
3558 OPTIONAL(enums, MDField, ); \
3559 OPTIONAL(retainedTypes, MDField, ); \
3560 OPTIONAL(subprograms, MDField, ); \
3561 OPTIONAL(globals, MDField, ); \
3562 OPTIONAL(imports, MDField, ); \
3563 OPTIONAL(dwoId, MDUnsignedField, );
3565 #undef VISIT_MD_FIELDS
3567 Result = GET_OR_DISTINCT(DICompileUnit,
3568 (Context, language.Val, file.Val, producer.Val,
3569 isOptimized.Val, flags.Val, runtimeVersion.Val,
3570 splitDebugFilename.Val, emissionKind.Val, enums.Val,
3571 retainedTypes.Val, subprograms.Val, globals.Val,
3572 imports.Val, dwoId.Val));
3576 /// ParseDISubprogram:
3577 /// ::= !DISubprogram(scope: !0, name: "foo", linkageName: "_Zfoo",
3578 /// file: !1, line: 7, type: !2, isLocal: false,
3579 /// isDefinition: true, scopeLine: 8, containingType: !3,
3580 /// virtuality: DW_VIRTUALTIY_pure_virtual,
3581 /// virtualIndex: 10, flags: 11,
3582 /// isOptimized: false, function: void ()* @_Z3foov,
3583 /// templateParams: !4, declaration: !5, variables: !6)
3584 bool LLParser::ParseDISubprogram(MDNode *&Result, bool IsDistinct) {
3585 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3586 OPTIONAL(scope, MDField, ); \
3587 OPTIONAL(name, MDStringField, ); \
3588 OPTIONAL(linkageName, MDStringField, ); \
3589 OPTIONAL(file, MDField, ); \
3590 OPTIONAL(line, LineField, ); \
3591 OPTIONAL(type, MDField, ); \
3592 OPTIONAL(isLocal, MDBoolField, ); \
3593 OPTIONAL(isDefinition, MDBoolField, (true)); \
3594 OPTIONAL(scopeLine, LineField, ); \
3595 OPTIONAL(containingType, MDField, ); \
3596 OPTIONAL(virtuality, DwarfVirtualityField, ); \
3597 OPTIONAL(virtualIndex, MDUnsignedField, (0, UINT32_MAX)); \
3598 OPTIONAL(flags, DIFlagField, ); \
3599 OPTIONAL(isOptimized, MDBoolField, ); \
3600 OPTIONAL(function, MDConstant, ); \
3601 OPTIONAL(templateParams, MDField, ); \
3602 OPTIONAL(declaration, MDField, ); \
3603 OPTIONAL(variables, MDField, );
3605 #undef VISIT_MD_FIELDS
3607 Result = GET_OR_DISTINCT(
3608 DISubprogram, (Context, scope.Val, name.Val, linkageName.Val, file.Val,
3609 line.Val, type.Val, isLocal.Val, isDefinition.Val,
3610 scopeLine.Val, containingType.Val, virtuality.Val,
3611 virtualIndex.Val, flags.Val, isOptimized.Val, function.Val,
3612 templateParams.Val, declaration.Val, variables.Val));
3616 /// ParseDILexicalBlock:
3617 /// ::= !DILexicalBlock(scope: !0, file: !2, line: 7, column: 9)
3618 bool LLParser::ParseDILexicalBlock(MDNode *&Result, bool IsDistinct) {
3619 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3620 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3621 OPTIONAL(file, MDField, ); \
3622 OPTIONAL(line, LineField, ); \
3623 OPTIONAL(column, ColumnField, );
3625 #undef VISIT_MD_FIELDS
3627 Result = GET_OR_DISTINCT(
3628 DILexicalBlock, (Context, scope.Val, file.Val, line.Val, column.Val));
3632 /// ParseDILexicalBlockFile:
3633 /// ::= !DILexicalBlockFile(scope: !0, file: !2, discriminator: 9)
3634 bool LLParser::ParseDILexicalBlockFile(MDNode *&Result, bool IsDistinct) {
3635 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3636 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3637 OPTIONAL(file, MDField, ); \
3638 REQUIRED(discriminator, MDUnsignedField, (0, UINT32_MAX));
3640 #undef VISIT_MD_FIELDS
3642 Result = GET_OR_DISTINCT(DILexicalBlockFile,
3643 (Context, scope.Val, file.Val, discriminator.Val));
3647 /// ParseDINamespace:
3648 /// ::= !DINamespace(scope: !0, file: !2, name: "SomeNamespace", line: 9)
3649 bool LLParser::ParseDINamespace(MDNode *&Result, bool IsDistinct) {
3650 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3651 REQUIRED(scope, MDField, ); \
3652 OPTIONAL(file, MDField, ); \
3653 OPTIONAL(name, MDStringField, ); \
3654 OPTIONAL(line, LineField, );
3656 #undef VISIT_MD_FIELDS
3658 Result = GET_OR_DISTINCT(DINamespace,
3659 (Context, scope.Val, file.Val, name.Val, line.Val));
3663 /// ParseDITemplateTypeParameter:
3664 /// ::= !DITemplateTypeParameter(name: "Ty", type: !1)
3665 bool LLParser::ParseDITemplateTypeParameter(MDNode *&Result, bool IsDistinct) {
3666 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3667 OPTIONAL(name, MDStringField, ); \
3668 REQUIRED(type, MDField, );
3670 #undef VISIT_MD_FIELDS
3673 GET_OR_DISTINCT(DITemplateTypeParameter, (Context, name.Val, type.Val));
3677 /// ParseDITemplateValueParameter:
3678 /// ::= !DITemplateValueParameter(tag: DW_TAG_template_value_parameter,
3679 /// name: "V", type: !1, value: i32 7)
3680 bool LLParser::ParseDITemplateValueParameter(MDNode *&Result, bool IsDistinct) {
3681 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3682 OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_template_value_parameter)); \
3683 OPTIONAL(name, MDStringField, ); \
3684 OPTIONAL(type, MDField, ); \
3685 REQUIRED(value, MDField, );
3687 #undef VISIT_MD_FIELDS
3689 Result = GET_OR_DISTINCT(DITemplateValueParameter,
3690 (Context, tag.Val, name.Val, type.Val, value.Val));
3694 /// ParseDIGlobalVariable:
3695 /// ::= !DIGlobalVariable(scope: !0, name: "foo", linkageName: "foo",
3696 /// file: !1, line: 7, type: !2, isLocal: false,
3697 /// isDefinition: true, variable: i32* @foo,
3698 /// declaration: !3)
3699 bool LLParser::ParseDIGlobalVariable(MDNode *&Result, bool IsDistinct) {
3700 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3701 REQUIRED(name, MDStringField, (/* AllowEmpty */ false)); \
3702 OPTIONAL(scope, MDField, ); \
3703 OPTIONAL(linkageName, MDStringField, ); \
3704 OPTIONAL(file, MDField, ); \
3705 OPTIONAL(line, LineField, ); \
3706 OPTIONAL(type, MDField, ); \
3707 OPTIONAL(isLocal, MDBoolField, ); \
3708 OPTIONAL(isDefinition, MDBoolField, (true)); \
3709 OPTIONAL(variable, MDConstant, ); \
3710 OPTIONAL(declaration, MDField, );
3712 #undef VISIT_MD_FIELDS
3714 Result = GET_OR_DISTINCT(DIGlobalVariable,
3715 (Context, scope.Val, name.Val, linkageName.Val,
3716 file.Val, line.Val, type.Val, isLocal.Val,
3717 isDefinition.Val, variable.Val, declaration.Val));
3721 /// ParseDILocalVariable:
3722 /// ::= !DILocalVariable(tag: DW_TAG_arg_variable, scope: !0, name: "foo",
3723 /// file: !1, line: 7, type: !2, arg: 2, flags: 7)
3724 bool LLParser::ParseDILocalVariable(MDNode *&Result, bool IsDistinct) {
3725 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3726 REQUIRED(tag, DwarfTagField, ); \
3727 REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3728 OPTIONAL(name, MDStringField, ); \
3729 OPTIONAL(file, MDField, ); \
3730 OPTIONAL(line, LineField, ); \
3731 OPTIONAL(type, MDField, ); \
3732 OPTIONAL(arg, MDUnsignedField, (0, UINT8_MAX)); \
3733 OPTIONAL(flags, DIFlagField, );
3735 #undef VISIT_MD_FIELDS
3737 Result = GET_OR_DISTINCT(DILocalVariable,
3738 (Context, tag.Val, scope.Val, name.Val, file.Val,
3739 line.Val, type.Val, arg.Val, flags.Val));
3743 /// ParseDIExpression:
3744 /// ::= !DIExpression(0, 7, -1)
3745 bool LLParser::ParseDIExpression(MDNode *&Result, bool IsDistinct) {
3746 assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3749 if (ParseToken(lltok::lparen, "expected '(' here"))
3752 SmallVector<uint64_t, 8> Elements;
3753 if (Lex.getKind() != lltok::rparen)
3755 if (Lex.getKind() == lltok::DwarfOp) {
3756 if (unsigned Op = dwarf::getOperationEncoding(Lex.getStrVal())) {
3758 Elements.push_back(Op);
3761 return TokError(Twine("invalid DWARF op '") + Lex.getStrVal() + "'");
3764 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
3765 return TokError("expected unsigned integer");
3767 auto &U = Lex.getAPSIntVal();
3768 if (U.ugt(UINT64_MAX))
3769 return TokError("element too large, limit is " + Twine(UINT64_MAX));
3770 Elements.push_back(U.getZExtValue());
3772 } while (EatIfPresent(lltok::comma));
3774 if (ParseToken(lltok::rparen, "expected ')' here"))
3777 Result = GET_OR_DISTINCT(DIExpression, (Context, Elements));
3781 /// ParseDIObjCProperty:
3782 /// ::= !DIObjCProperty(name: "foo", file: !1, line: 7, setter: "setFoo",
3783 /// getter: "getFoo", attributes: 7, type: !2)
3784 bool LLParser::ParseDIObjCProperty(MDNode *&Result, bool IsDistinct) {
3785 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3786 OPTIONAL(name, MDStringField, ); \
3787 OPTIONAL(file, MDField, ); \
3788 OPTIONAL(line, LineField, ); \
3789 OPTIONAL(setter, MDStringField, ); \
3790 OPTIONAL(getter, MDStringField, ); \
3791 OPTIONAL(attributes, MDUnsignedField, (0, UINT32_MAX)); \
3792 OPTIONAL(type, MDField, );
3794 #undef VISIT_MD_FIELDS
3796 Result = GET_OR_DISTINCT(DIObjCProperty,
3797 (Context, name.Val, file.Val, line.Val, setter.Val,
3798 getter.Val, attributes.Val, type.Val));
3802 /// ParseDIImportedEntity:
3803 /// ::= !DIImportedEntity(tag: DW_TAG_imported_module, scope: !0, entity: !1,
3804 /// line: 7, name: "foo")
3805 bool LLParser::ParseDIImportedEntity(MDNode *&Result, bool IsDistinct) {
3806 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3807 REQUIRED(tag, DwarfTagField, ); \
3808 REQUIRED(scope, MDField, ); \
3809 OPTIONAL(entity, MDField, ); \
3810 OPTIONAL(line, LineField, ); \
3811 OPTIONAL(name, MDStringField, );
3813 #undef VISIT_MD_FIELDS
3815 Result = GET_OR_DISTINCT(DIImportedEntity, (Context, tag.Val, scope.Val,
3816 entity.Val, line.Val, name.Val));
3820 #undef PARSE_MD_FIELD
3822 #undef REQUIRE_FIELD
3823 #undef DECLARE_FIELD
3825 /// ParseMetadataAsValue
3826 /// ::= metadata i32 %local
3827 /// ::= metadata i32 @global
3828 /// ::= metadata i32 7
3830 /// ::= metadata !{...}
3831 /// ::= metadata !"string"
3832 bool LLParser::ParseMetadataAsValue(Value *&V, PerFunctionState &PFS) {
3833 // Note: the type 'metadata' has already been parsed.
3835 if (ParseMetadata(MD, &PFS))
3838 V = MetadataAsValue::get(Context, MD);
3842 /// ParseValueAsMetadata
3846 bool LLParser::ParseValueAsMetadata(Metadata *&MD, const Twine &TypeMsg,
3847 PerFunctionState *PFS) {
3850 if (ParseType(Ty, TypeMsg, Loc))
3852 if (Ty->isMetadataTy())
3853 return Error(Loc, "invalid metadata-value-metadata roundtrip");
3856 if (ParseValue(Ty, V, PFS))
3859 MD = ValueAsMetadata::get(V);
3870 /// ::= !DILocation(...)
3871 bool LLParser::ParseMetadata(Metadata *&MD, PerFunctionState *PFS) {
3872 if (Lex.getKind() == lltok::MetadataVar) {
3874 if (ParseSpecializedMDNode(N))
3882 if (Lex.getKind() != lltok::exclaim)
3883 return ParseValueAsMetadata(MD, "expected metadata operand", PFS);
3886 assert(Lex.getKind() == lltok::exclaim && "Expected '!' here");
3890 // ::= '!' STRINGCONSTANT
3891 if (Lex.getKind() == lltok::StringConstant) {
3893 if (ParseMDString(S))
3903 if (ParseMDNodeTail(N))
3910 //===----------------------------------------------------------------------===//
3911 // Function Parsing.
3912 //===----------------------------------------------------------------------===//
3914 bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
3915 PerFunctionState *PFS) {
3916 if (Ty->isFunctionTy())
3917 return Error(ID.Loc, "functions are not values, refer to them as pointers");
3920 case ValID::t_LocalID:
3921 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
3922 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
3923 return V == nullptr;
3924 case ValID::t_LocalName:
3925 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
3926 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
3927 return V == nullptr;
3928 case ValID::t_InlineAsm: {
3929 PointerType *PTy = dyn_cast<PointerType>(Ty);
3931 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : nullptr;
3932 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
3933 return Error(ID.Loc, "invalid type for inline asm constraint string");
3934 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1,
3935 (ID.UIntVal>>1)&1, (InlineAsm::AsmDialect(ID.UIntVal>>2)));
3938 case ValID::t_GlobalName:
3939 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
3940 return V == nullptr;
3941 case ValID::t_GlobalID:
3942 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
3943 return V == nullptr;
3944 case ValID::t_APSInt:
3945 if (!Ty->isIntegerTy())
3946 return Error(ID.Loc, "integer constant must have integer type");
3947 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
3948 V = ConstantInt::get(Context, ID.APSIntVal);
3950 case ValID::t_APFloat:
3951 if (!Ty->isFloatingPointTy() ||
3952 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
3953 return Error(ID.Loc, "floating point constant invalid for type");
3955 // The lexer has no type info, so builds all half, float, and double FP
3956 // constants as double. Fix this here. Long double does not need this.
3957 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble) {
3960 ID.APFloatVal.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven,
3962 else if (Ty->isFloatTy())
3963 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
3966 V = ConstantFP::get(Context, ID.APFloatVal);
3968 if (V->getType() != Ty)
3969 return Error(ID.Loc, "floating point constant does not have type '" +
3970 getTypeString(Ty) + "'");
3974 if (!Ty->isPointerTy())
3975 return Error(ID.Loc, "null must be a pointer type");
3976 V = ConstantPointerNull::get(cast<PointerType>(Ty));
3978 case ValID::t_Undef:
3979 // FIXME: LabelTy should not be a first-class type.
3980 if (!Ty->isFirstClassType() || Ty->isLabelTy())
3981 return Error(ID.Loc, "invalid type for undef constant");
3982 V = UndefValue::get(Ty);
3984 case ValID::t_EmptyArray:
3985 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
3986 return Error(ID.Loc, "invalid empty array initializer");
3987 V = UndefValue::get(Ty);
3990 // FIXME: LabelTy should not be a first-class type.
3991 if (!Ty->isFirstClassType() || Ty->isLabelTy())
3992 return Error(ID.Loc, "invalid type for null constant");
3993 V = Constant::getNullValue(Ty);
3995 case ValID::t_Constant:
3996 if (ID.ConstantVal->getType() != Ty)
3997 return Error(ID.Loc, "constant expression type mismatch");
4001 case ValID::t_ConstantStruct:
4002 case ValID::t_PackedConstantStruct:
4003 if (StructType *ST = dyn_cast<StructType>(Ty)) {
4004 if (ST->getNumElements() != ID.UIntVal)
4005 return Error(ID.Loc,
4006 "initializer with struct type has wrong # elements");
4007 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
4008 return Error(ID.Loc, "packed'ness of initializer and type don't match");
4010 // Verify that the elements are compatible with the structtype.
4011 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
4012 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
4013 return Error(ID.Loc, "element " + Twine(i) +
4014 " of struct initializer doesn't match struct element type");
4016 V = ConstantStruct::get(ST, makeArrayRef(ID.ConstantStructElts,
4019 return Error(ID.Loc, "constant expression type mismatch");
4022 llvm_unreachable("Invalid ValID");
4025 bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS) {
4028 return ParseValID(ID, PFS) ||
4029 ConvertValIDToValue(Ty, ID, V, PFS);
4032 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
4034 return ParseType(Ty) ||
4035 ParseValue(Ty, V, PFS);
4038 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
4039 PerFunctionState &PFS) {
4042 if (ParseTypeAndValue(V, PFS)) return true;
4043 if (!isa<BasicBlock>(V))
4044 return Error(Loc, "expected a basic block");
4045 BB = cast<BasicBlock>(V);
4051 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
4052 /// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
4053 /// OptionalAlign OptGC OptionalPrefix OptionalPrologue
4054 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
4055 // Parse the linkage.
4056 LocTy LinkageLoc = Lex.getLoc();
4059 unsigned Visibility;
4060 unsigned DLLStorageClass;
4061 AttrBuilder RetAttrs;
4063 Type *RetType = nullptr;
4064 LocTy RetTypeLoc = Lex.getLoc();
4065 if (ParseOptionalLinkage(Linkage) ||
4066 ParseOptionalVisibility(Visibility) ||
4067 ParseOptionalDLLStorageClass(DLLStorageClass) ||
4068 ParseOptionalCallingConv(CC) ||
4069 ParseOptionalReturnAttrs(RetAttrs) ||
4070 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
4073 // Verify that the linkage is ok.
4074 switch ((GlobalValue::LinkageTypes)Linkage) {
4075 case GlobalValue::ExternalLinkage:
4076 break; // always ok.
4077 case GlobalValue::ExternalWeakLinkage:
4079 return Error(LinkageLoc, "invalid linkage for function definition");
4081 case GlobalValue::PrivateLinkage:
4082 case GlobalValue::InternalLinkage:
4083 case GlobalValue::AvailableExternallyLinkage:
4084 case GlobalValue::LinkOnceAnyLinkage:
4085 case GlobalValue::LinkOnceODRLinkage:
4086 case GlobalValue::WeakAnyLinkage:
4087 case GlobalValue::WeakODRLinkage:
4089 return Error(LinkageLoc, "invalid linkage for function declaration");
4091 case GlobalValue::AppendingLinkage:
4092 case GlobalValue::CommonLinkage:
4093 return Error(LinkageLoc, "invalid function linkage type");
4096 if (!isValidVisibilityForLinkage(Visibility, Linkage))
4097 return Error(LinkageLoc,
4098 "symbol with local linkage must have default visibility");
4100 if (!FunctionType::isValidReturnType(RetType))
4101 return Error(RetTypeLoc, "invalid function return type");
4103 LocTy NameLoc = Lex.getLoc();
4105 std::string FunctionName;
4106 if (Lex.getKind() == lltok::GlobalVar) {
4107 FunctionName = Lex.getStrVal();
4108 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
4109 unsigned NameID = Lex.getUIntVal();
4111 if (NameID != NumberedVals.size())
4112 return TokError("function expected to be numbered '%" +
4113 Twine(NumberedVals.size()) + "'");
4115 return TokError("expected function name");
4120 if (Lex.getKind() != lltok::lparen)
4121 return TokError("expected '(' in function argument list");
4123 SmallVector<ArgInfo, 8> ArgList;
4125 AttrBuilder FuncAttrs;
4126 std::vector<unsigned> FwdRefAttrGrps;
4128 std::string Section;
4132 LocTy UnnamedAddrLoc;
4133 Constant *Prefix = nullptr;
4134 Constant *Prologue = nullptr;
4137 if (ParseArgumentList(ArgList, isVarArg) ||
4138 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
4140 ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false,
4142 (EatIfPresent(lltok::kw_section) &&
4143 ParseStringConstant(Section)) ||
4144 parseOptionalComdat(FunctionName, C) ||
4145 ParseOptionalAlignment(Alignment) ||
4146 (EatIfPresent(lltok::kw_gc) &&
4147 ParseStringConstant(GC)) ||
4148 (EatIfPresent(lltok::kw_prefix) &&
4149 ParseGlobalTypeAndValue(Prefix)) ||
4150 (EatIfPresent(lltok::kw_prologue) &&
4151 ParseGlobalTypeAndValue(Prologue)))
4154 if (FuncAttrs.contains(Attribute::Builtin))
4155 return Error(BuiltinLoc, "'builtin' attribute not valid on function");
4157 // If the alignment was parsed as an attribute, move to the alignment field.
4158 if (FuncAttrs.hasAlignmentAttr()) {
4159 Alignment = FuncAttrs.getAlignment();
4160 FuncAttrs.removeAttribute(Attribute::Alignment);
4163 // Okay, if we got here, the function is syntactically valid. Convert types
4164 // and do semantic checks.
4165 std::vector<Type*> ParamTypeList;
4166 SmallVector<AttributeSet, 8> Attrs;
4168 if (RetAttrs.hasAttributes())
4169 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4170 AttributeSet::ReturnIndex,
4173 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
4174 ParamTypeList.push_back(ArgList[i].Ty);
4175 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
4176 AttrBuilder B(ArgList[i].Attrs, i + 1);
4177 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
4181 if (FuncAttrs.hasAttributes())
4182 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4183 AttributeSet::FunctionIndex,
4186 AttributeSet PAL = AttributeSet::get(Context, Attrs);
4188 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
4189 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
4192 FunctionType::get(RetType, ParamTypeList, isVarArg);
4193 PointerType *PFT = PointerType::getUnqual(FT);
4196 if (!FunctionName.empty()) {
4197 // If this was a definition of a forward reference, remove the definition
4198 // from the forward reference table and fill in the forward ref.
4199 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
4200 ForwardRefVals.find(FunctionName);
4201 if (FRVI != ForwardRefVals.end()) {
4202 Fn = M->getFunction(FunctionName);
4204 return Error(FRVI->second.second, "invalid forward reference to "
4205 "function as global value!");
4206 if (Fn->getType() != PFT)
4207 return Error(FRVI->second.second, "invalid forward reference to "
4208 "function '" + FunctionName + "' with wrong type!");
4210 ForwardRefVals.erase(FRVI);
4211 } else if ((Fn = M->getFunction(FunctionName))) {
4212 // Reject redefinitions.
4213 return Error(NameLoc, "invalid redefinition of function '" +
4214 FunctionName + "'");
4215 } else if (M->getNamedValue(FunctionName)) {
4216 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
4220 // If this is a definition of a forward referenced function, make sure the
4222 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
4223 = ForwardRefValIDs.find(NumberedVals.size());
4224 if (I != ForwardRefValIDs.end()) {
4225 Fn = cast<Function>(I->second.first);
4226 if (Fn->getType() != PFT)
4227 return Error(NameLoc, "type of definition and forward reference of '@" +
4228 Twine(NumberedVals.size()) + "' disagree");
4229 ForwardRefValIDs.erase(I);
4234 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
4235 else // Move the forward-reference to the correct spot in the module.
4236 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
4238 if (FunctionName.empty())
4239 NumberedVals.push_back(Fn);
4241 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
4242 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
4243 Fn->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
4244 Fn->setCallingConv(CC);
4245 Fn->setAttributes(PAL);
4246 Fn->setUnnamedAddr(UnnamedAddr);
4247 Fn->setAlignment(Alignment);
4248 Fn->setSection(Section);
4250 if (!GC.empty()) Fn->setGC(GC.c_str());
4251 Fn->setPrefixData(Prefix);
4252 Fn->setPrologueData(Prologue);
4253 ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
4255 // Add all of the arguments we parsed to the function.
4256 Function::arg_iterator ArgIt = Fn->arg_begin();
4257 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
4258 // If the argument has a name, insert it into the argument symbol table.
4259 if (ArgList[i].Name.empty()) continue;
4261 // Set the name, if it conflicted, it will be auto-renamed.
4262 ArgIt->setName(ArgList[i].Name);
4264 if (ArgIt->getName() != ArgList[i].Name)
4265 return Error(ArgList[i].Loc, "redefinition of argument '%" +
4266 ArgList[i].Name + "'");
4272 // Check the declaration has no block address forward references.
4274 if (FunctionName.empty()) {
4275 ID.Kind = ValID::t_GlobalID;
4276 ID.UIntVal = NumberedVals.size() - 1;
4278 ID.Kind = ValID::t_GlobalName;
4279 ID.StrVal = FunctionName;
4281 auto Blocks = ForwardRefBlockAddresses.find(ID);
4282 if (Blocks != ForwardRefBlockAddresses.end())
4283 return Error(Blocks->first.Loc,
4284 "cannot take blockaddress inside a declaration");
4288 bool LLParser::PerFunctionState::resolveForwardRefBlockAddresses() {
4290 if (FunctionNumber == -1) {
4291 ID.Kind = ValID::t_GlobalName;
4292 ID.StrVal = F.getName();
4294 ID.Kind = ValID::t_GlobalID;
4295 ID.UIntVal = FunctionNumber;
4298 auto Blocks = P.ForwardRefBlockAddresses.find(ID);
4299 if (Blocks == P.ForwardRefBlockAddresses.end())
4302 for (const auto &I : Blocks->second) {
4303 const ValID &BBID = I.first;
4304 GlobalValue *GV = I.second;
4306 assert((BBID.Kind == ValID::t_LocalID || BBID.Kind == ValID::t_LocalName) &&
4307 "Expected local id or name");
4309 if (BBID.Kind == ValID::t_LocalName)
4310 BB = GetBB(BBID.StrVal, BBID.Loc);
4312 BB = GetBB(BBID.UIntVal, BBID.Loc);
4314 return P.Error(BBID.Loc, "referenced value is not a basic block");
4316 GV->replaceAllUsesWith(BlockAddress::get(&F, BB));
4317 GV->eraseFromParent();
4320 P.ForwardRefBlockAddresses.erase(Blocks);
4324 /// ParseFunctionBody
4325 /// ::= '{' BasicBlock+ UseListOrderDirective* '}'
4326 bool LLParser::ParseFunctionBody(Function &Fn) {
4327 if (Lex.getKind() != lltok::lbrace)
4328 return TokError("expected '{' in function body");
4329 Lex.Lex(); // eat the {.
4331 int FunctionNumber = -1;
4332 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
4334 PerFunctionState PFS(*this, Fn, FunctionNumber);
4336 // Resolve block addresses and allow basic blocks to be forward-declared
4337 // within this function.
4338 if (PFS.resolveForwardRefBlockAddresses())
4340 SaveAndRestore<PerFunctionState *> ScopeExit(BlockAddressPFS, &PFS);
4342 // We need at least one basic block.
4343 if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_uselistorder)
4344 return TokError("function body requires at least one basic block");
4346 while (Lex.getKind() != lltok::rbrace &&
4347 Lex.getKind() != lltok::kw_uselistorder)
4348 if (ParseBasicBlock(PFS)) return true;
4350 while (Lex.getKind() != lltok::rbrace)
4351 if (ParseUseListOrder(&PFS))
4357 // Verify function is ok.
4358 return PFS.FinishFunction();
4362 /// ::= LabelStr? Instruction*
4363 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
4364 // If this basic block starts out with a name, remember it.
4366 LocTy NameLoc = Lex.getLoc();
4367 if (Lex.getKind() == lltok::LabelStr) {
4368 Name = Lex.getStrVal();
4372 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
4374 return Error(NameLoc,
4375 "unable to create block named '" + Name + "'");
4377 std::string NameStr;
4379 // Parse the instructions in this block until we get a terminator.
4382 // This instruction may have three possibilities for a name: a) none
4383 // specified, b) name specified "%foo =", c) number specified: "%4 =".
4384 LocTy NameLoc = Lex.getLoc();
4388 if (Lex.getKind() == lltok::LocalVarID) {
4389 NameID = Lex.getUIntVal();
4391 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
4393 } else if (Lex.getKind() == lltok::LocalVar) {
4394 NameStr = Lex.getStrVal();
4396 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
4400 switch (ParseInstruction(Inst, BB, PFS)) {
4401 default: llvm_unreachable("Unknown ParseInstruction result!");
4402 case InstError: return true;
4404 BB->getInstList().push_back(Inst);
4406 // With a normal result, we check to see if the instruction is followed by
4407 // a comma and metadata.
4408 if (EatIfPresent(lltok::comma))
4409 if (ParseInstructionMetadata(*Inst))
4412 case InstExtraComma:
4413 BB->getInstList().push_back(Inst);
4415 // If the instruction parser ate an extra comma at the end of it, it
4416 // *must* be followed by metadata.
4417 if (ParseInstructionMetadata(*Inst))
4422 // Set the name on the instruction.
4423 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
4424 } while (!isa<TerminatorInst>(Inst));
4429 //===----------------------------------------------------------------------===//
4430 // Instruction Parsing.
4431 //===----------------------------------------------------------------------===//
4433 /// ParseInstruction - Parse one of the many different instructions.
4435 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
4436 PerFunctionState &PFS) {
4437 lltok::Kind Token = Lex.getKind();
4438 if (Token == lltok::Eof)
4439 return TokError("found end of file when expecting more instructions");
4440 LocTy Loc = Lex.getLoc();
4441 unsigned KeywordVal = Lex.getUIntVal();
4442 Lex.Lex(); // Eat the keyword.
4445 default: return Error(Loc, "expected instruction opcode");
4446 // Terminator Instructions.
4447 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
4448 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
4449 case lltok::kw_br: return ParseBr(Inst, PFS);
4450 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
4451 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
4452 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
4453 case lltok::kw_resume: return ParseResume(Inst, PFS);
4454 // Binary Operators.
4458 case lltok::kw_shl: {
4459 bool NUW = EatIfPresent(lltok::kw_nuw);
4460 bool NSW = EatIfPresent(lltok::kw_nsw);
4461 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
4463 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
4465 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
4466 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
4469 case lltok::kw_fadd:
4470 case lltok::kw_fsub:
4471 case lltok::kw_fmul:
4472 case lltok::kw_fdiv:
4473 case lltok::kw_frem: {
4474 FastMathFlags FMF = EatFastMathFlagsIfPresent();
4475 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
4479 Inst->setFastMathFlags(FMF);
4483 case lltok::kw_sdiv:
4484 case lltok::kw_udiv:
4485 case lltok::kw_lshr:
4486 case lltok::kw_ashr: {
4487 bool Exact = EatIfPresent(lltok::kw_exact);
4489 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
4490 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
4494 case lltok::kw_urem:
4495 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
4498 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
4499 case lltok::kw_icmp:
4500 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
4502 case lltok::kw_trunc:
4503 case lltok::kw_zext:
4504 case lltok::kw_sext:
4505 case lltok::kw_fptrunc:
4506 case lltok::kw_fpext:
4507 case lltok::kw_bitcast:
4508 case lltok::kw_addrspacecast:
4509 case lltok::kw_uitofp:
4510 case lltok::kw_sitofp:
4511 case lltok::kw_fptoui:
4512 case lltok::kw_fptosi:
4513 case lltok::kw_inttoptr:
4514 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
4516 case lltok::kw_select: return ParseSelect(Inst, PFS);
4517 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
4518 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
4519 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
4520 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
4521 case lltok::kw_phi: return ParsePHI(Inst, PFS);
4522 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
4524 case lltok::kw_call: return ParseCall(Inst, PFS, CallInst::TCK_None);
4525 case lltok::kw_tail: return ParseCall(Inst, PFS, CallInst::TCK_Tail);
4526 case lltok::kw_musttail: return ParseCall(Inst, PFS, CallInst::TCK_MustTail);
4528 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
4529 case lltok::kw_load: return ParseLoad(Inst, PFS);
4530 case lltok::kw_store: return ParseStore(Inst, PFS);
4531 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
4532 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
4533 case lltok::kw_fence: return ParseFence(Inst, PFS);
4534 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
4535 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
4536 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
4540 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
4541 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
4542 if (Opc == Instruction::FCmp) {
4543 switch (Lex.getKind()) {
4544 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
4545 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
4546 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
4547 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
4548 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
4549 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
4550 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
4551 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
4552 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
4553 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
4554 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
4555 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
4556 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
4557 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
4558 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
4559 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
4560 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
4563 switch (Lex.getKind()) {
4564 default: return TokError("expected icmp predicate (e.g. 'eq')");
4565 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
4566 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
4567 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
4568 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
4569 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
4570 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
4571 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
4572 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
4573 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
4574 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
4581 //===----------------------------------------------------------------------===//
4582 // Terminator Instructions.
4583 //===----------------------------------------------------------------------===//
4585 /// ParseRet - Parse a return instruction.
4586 /// ::= 'ret' void (',' !dbg, !1)*
4587 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
4588 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
4589 PerFunctionState &PFS) {
4590 SMLoc TypeLoc = Lex.getLoc();
4592 if (ParseType(Ty, true /*void allowed*/)) return true;
4594 Type *ResType = PFS.getFunction().getReturnType();
4596 if (Ty->isVoidTy()) {
4597 if (!ResType->isVoidTy())
4598 return Error(TypeLoc, "value doesn't match function result type '" +
4599 getTypeString(ResType) + "'");
4601 Inst = ReturnInst::Create(Context);
4606 if (ParseValue(Ty, RV, PFS)) return true;
4608 if (ResType != RV->getType())
4609 return Error(TypeLoc, "value doesn't match function result type '" +
4610 getTypeString(ResType) + "'");
4612 Inst = ReturnInst::Create(Context, RV);
4618 /// ::= 'br' TypeAndValue
4619 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
4620 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
4623 BasicBlock *Op1, *Op2;
4624 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
4626 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
4627 Inst = BranchInst::Create(BB);
4631 if (Op0->getType() != Type::getInt1Ty(Context))
4632 return Error(Loc, "branch condition must have 'i1' type");
4634 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
4635 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
4636 ParseToken(lltok::comma, "expected ',' after true destination") ||
4637 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
4640 Inst = BranchInst::Create(Op1, Op2, Op0);
4646 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
4648 /// ::= (TypeAndValue ',' TypeAndValue)*
4649 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
4650 LocTy CondLoc, BBLoc;
4652 BasicBlock *DefaultBB;
4653 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
4654 ParseToken(lltok::comma, "expected ',' after switch condition") ||
4655 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
4656 ParseToken(lltok::lsquare, "expected '[' with switch table"))
4659 if (!Cond->getType()->isIntegerTy())
4660 return Error(CondLoc, "switch condition must have integer type");
4662 // Parse the jump table pairs.
4663 SmallPtrSet<Value*, 32> SeenCases;
4664 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
4665 while (Lex.getKind() != lltok::rsquare) {
4669 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
4670 ParseToken(lltok::comma, "expected ',' after case value") ||
4671 ParseTypeAndBasicBlock(DestBB, PFS))
4674 if (!SeenCases.insert(Constant).second)
4675 return Error(CondLoc, "duplicate case value in switch");
4676 if (!isa<ConstantInt>(Constant))
4677 return Error(CondLoc, "case value is not a constant integer");
4679 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
4682 Lex.Lex(); // Eat the ']'.
4684 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
4685 for (unsigned i = 0, e = Table.size(); i != e; ++i)
4686 SI->addCase(Table[i].first, Table[i].second);
4693 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
4694 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
4697 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
4698 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
4699 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
4702 if (!Address->getType()->isPointerTy())
4703 return Error(AddrLoc, "indirectbr address must have pointer type");
4705 // Parse the destination list.
4706 SmallVector<BasicBlock*, 16> DestList;
4708 if (Lex.getKind() != lltok::rsquare) {
4710 if (ParseTypeAndBasicBlock(DestBB, PFS))
4712 DestList.push_back(DestBB);
4714 while (EatIfPresent(lltok::comma)) {
4715 if (ParseTypeAndBasicBlock(DestBB, PFS))
4717 DestList.push_back(DestBB);
4721 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
4724 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
4725 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
4726 IBI->addDestination(DestList[i]);
4733 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
4734 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
4735 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
4736 LocTy CallLoc = Lex.getLoc();
4737 AttrBuilder RetAttrs, FnAttrs;
4738 std::vector<unsigned> FwdRefAttrGrps;
4741 Type *RetType = nullptr;
4744 SmallVector<ParamInfo, 16> ArgList;
4746 BasicBlock *NormalBB, *UnwindBB;
4747 if (ParseOptionalCallingConv(CC) ||
4748 ParseOptionalReturnAttrs(RetAttrs) ||
4749 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
4750 ParseValID(CalleeID) ||
4751 ParseParameterList(ArgList, PFS) ||
4752 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
4754 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
4755 ParseTypeAndBasicBlock(NormalBB, PFS) ||
4756 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
4757 ParseTypeAndBasicBlock(UnwindBB, PFS))
4760 // If RetType is a non-function pointer type, then this is the short syntax
4761 // for the call, which means that RetType is just the return type. Infer the
4762 // rest of the function argument types from the arguments that are present.
4763 FunctionType *Ty = dyn_cast<FunctionType>(RetType);
4765 // Pull out the types of all of the arguments...
4766 std::vector<Type*> ParamTypes;
4767 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
4768 ParamTypes.push_back(ArgList[i].V->getType());
4770 if (!FunctionType::isValidReturnType(RetType))
4771 return Error(RetTypeLoc, "Invalid result type for LLVM function");
4773 Ty = FunctionType::get(RetType, ParamTypes, false);
4776 // Look up the callee.
4778 if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS))
4781 // Set up the Attribute for the function.
4782 SmallVector<AttributeSet, 8> Attrs;
4783 if (RetAttrs.hasAttributes())
4784 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4785 AttributeSet::ReturnIndex,
4788 SmallVector<Value*, 8> Args;
4790 // Loop through FunctionType's arguments and ensure they are specified
4791 // correctly. Also, gather any parameter attributes.
4792 FunctionType::param_iterator I = Ty->param_begin();
4793 FunctionType::param_iterator E = Ty->param_end();
4794 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
4795 Type *ExpectedTy = nullptr;
4798 } else if (!Ty->isVarArg()) {
4799 return Error(ArgList[i].Loc, "too many arguments specified");
4802 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
4803 return Error(ArgList[i].Loc, "argument is not of expected type '" +
4804 getTypeString(ExpectedTy) + "'");
4805 Args.push_back(ArgList[i].V);
4806 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
4807 AttrBuilder B(ArgList[i].Attrs, i + 1);
4808 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
4813 return Error(CallLoc, "not enough parameters specified for call");
4815 if (FnAttrs.hasAttributes()) {
4816 if (FnAttrs.hasAlignmentAttr())
4817 return Error(CallLoc, "invoke instructions may not have an alignment");
4819 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4820 AttributeSet::FunctionIndex,
4824 // Finish off the Attribute and check them
4825 AttributeSet PAL = AttributeSet::get(Context, Attrs);
4827 InvokeInst *II = InvokeInst::Create(Ty, Callee, NormalBB, UnwindBB, Args);
4828 II->setCallingConv(CC);
4829 II->setAttributes(PAL);
4830 ForwardRefAttrGroups[II] = FwdRefAttrGrps;
4836 /// ::= 'resume' TypeAndValue
4837 bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
4838 Value *Exn; LocTy ExnLoc;
4839 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
4842 ResumeInst *RI = ResumeInst::Create(Exn);
4847 //===----------------------------------------------------------------------===//
4848 // Binary Operators.
4849 //===----------------------------------------------------------------------===//
4852 /// ::= ArithmeticOps TypeAndValue ',' Value
4854 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
4855 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
4856 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
4857 unsigned Opc, unsigned OperandType) {
4858 LocTy Loc; Value *LHS, *RHS;
4859 if (ParseTypeAndValue(LHS, Loc, PFS) ||
4860 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
4861 ParseValue(LHS->getType(), RHS, PFS))
4865 switch (OperandType) {
4866 default: llvm_unreachable("Unknown operand type!");
4867 case 0: // int or FP.
4868 Valid = LHS->getType()->isIntOrIntVectorTy() ||
4869 LHS->getType()->isFPOrFPVectorTy();
4871 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
4872 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
4876 return Error(Loc, "invalid operand type for instruction");
4878 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
4883 /// ::= ArithmeticOps TypeAndValue ',' Value {
4884 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
4886 LocTy Loc; Value *LHS, *RHS;
4887 if (ParseTypeAndValue(LHS, Loc, PFS) ||
4888 ParseToken(lltok::comma, "expected ',' in logical operation") ||
4889 ParseValue(LHS->getType(), RHS, PFS))
4892 if (!LHS->getType()->isIntOrIntVectorTy())
4893 return Error(Loc,"instruction requires integer or integer vector operands");
4895 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
4901 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
4902 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
4903 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
4905 // Parse the integer/fp comparison predicate.
4909 if (ParseCmpPredicate(Pred, Opc) ||
4910 ParseTypeAndValue(LHS, Loc, PFS) ||
4911 ParseToken(lltok::comma, "expected ',' after compare value") ||
4912 ParseValue(LHS->getType(), RHS, PFS))
4915 if (Opc == Instruction::FCmp) {
4916 if (!LHS->getType()->isFPOrFPVectorTy())
4917 return Error(Loc, "fcmp requires floating point operands");
4918 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
4920 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
4921 if (!LHS->getType()->isIntOrIntVectorTy() &&
4922 !LHS->getType()->getScalarType()->isPointerTy())
4923 return Error(Loc, "icmp requires integer operands");
4924 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
4929 //===----------------------------------------------------------------------===//
4930 // Other Instructions.
4931 //===----------------------------------------------------------------------===//
4935 /// ::= CastOpc TypeAndValue 'to' Type
4936 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
4940 Type *DestTy = nullptr;
4941 if (ParseTypeAndValue(Op, Loc, PFS) ||
4942 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
4946 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
4947 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
4948 return Error(Loc, "invalid cast opcode for cast from '" +
4949 getTypeString(Op->getType()) + "' to '" +
4950 getTypeString(DestTy) + "'");
4952 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
4957 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
4958 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
4960 Value *Op0, *Op1, *Op2;
4961 if (ParseTypeAndValue(Op0, Loc, PFS) ||
4962 ParseToken(lltok::comma, "expected ',' after select condition") ||
4963 ParseTypeAndValue(Op1, PFS) ||
4964 ParseToken(lltok::comma, "expected ',' after select value") ||
4965 ParseTypeAndValue(Op2, PFS))
4968 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
4969 return Error(Loc, Reason);
4971 Inst = SelectInst::Create(Op0, Op1, Op2);
4976 /// ::= 'va_arg' TypeAndValue ',' Type
4977 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
4979 Type *EltTy = nullptr;
4981 if (ParseTypeAndValue(Op, PFS) ||
4982 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
4983 ParseType(EltTy, TypeLoc))
4986 if (!EltTy->isFirstClassType())
4987 return Error(TypeLoc, "va_arg requires operand with first class type");
4989 Inst = new VAArgInst(Op, EltTy);
4993 /// ParseExtractElement
4994 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
4995 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
4998 if (ParseTypeAndValue(Op0, Loc, PFS) ||
4999 ParseToken(lltok::comma, "expected ',' after extract value") ||
5000 ParseTypeAndValue(Op1, PFS))
5003 if (!ExtractElementInst::isValidOperands(Op0, Op1))
5004 return Error(Loc, "invalid extractelement operands");
5006 Inst = ExtractElementInst::Create(Op0, Op1);
5010 /// ParseInsertElement
5011 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5012 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
5014 Value *Op0, *Op1, *Op2;
5015 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5016 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5017 ParseTypeAndValue(Op1, PFS) ||
5018 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5019 ParseTypeAndValue(Op2, PFS))
5022 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
5023 return Error(Loc, "invalid insertelement operands");
5025 Inst = InsertElementInst::Create(Op0, Op1, Op2);
5029 /// ParseShuffleVector
5030 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5031 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
5033 Value *Op0, *Op1, *Op2;
5034 if (ParseTypeAndValue(Op0, Loc, PFS) ||
5035 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
5036 ParseTypeAndValue(Op1, PFS) ||
5037 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
5038 ParseTypeAndValue(Op2, PFS))
5041 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
5042 return Error(Loc, "invalid shufflevector operands");
5044 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
5049 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
5050 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
5051 Type *Ty = nullptr; LocTy TypeLoc;
5054 if (ParseType(Ty, TypeLoc) ||
5055 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
5056 ParseValue(Ty, Op0, PFS) ||
5057 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5058 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
5059 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
5062 bool AteExtraComma = false;
5063 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
5065 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
5067 if (!EatIfPresent(lltok::comma))
5070 if (Lex.getKind() == lltok::MetadataVar) {
5071 AteExtraComma = true;
5075 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
5076 ParseValue(Ty, Op0, PFS) ||
5077 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5078 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
5079 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
5083 if (!Ty->isFirstClassType())
5084 return Error(TypeLoc, "phi node must have first class type");
5086 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
5087 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
5088 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
5090 return AteExtraComma ? InstExtraComma : InstNormal;
5094 /// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
5096 /// ::= 'catch' TypeAndValue
5098 /// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
5099 bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
5100 Type *Ty = nullptr; LocTy TyLoc;
5101 Value *PersFn; LocTy PersFnLoc;
5103 if (ParseType(Ty, TyLoc) ||
5104 ParseToken(lltok::kw_personality, "expected 'personality'") ||
5105 ParseTypeAndValue(PersFn, PersFnLoc, PFS))
5108 std::unique_ptr<LandingPadInst> LP(LandingPadInst::Create(Ty, PersFn, 0));
5109 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
5111 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
5112 LandingPadInst::ClauseType CT;
5113 if (EatIfPresent(lltok::kw_catch))
5114 CT = LandingPadInst::Catch;
5115 else if (EatIfPresent(lltok::kw_filter))
5116 CT = LandingPadInst::Filter;
5118 return TokError("expected 'catch' or 'filter' clause type");
5122 if (ParseTypeAndValue(V, VLoc, PFS))
5125 // A 'catch' type expects a non-array constant. A filter clause expects an
5127 if (CT == LandingPadInst::Catch) {
5128 if (isa<ArrayType>(V->getType()))
5129 Error(VLoc, "'catch' clause has an invalid type");
5131 if (!isa<ArrayType>(V->getType()))
5132 Error(VLoc, "'filter' clause has an invalid type");
5135 Constant *CV = dyn_cast<Constant>(V);
5137 return Error(VLoc, "clause argument must be a constant");
5141 Inst = LP.release();
5146 /// ::= 'call' OptionalCallingConv OptionalAttrs Type Value
5147 /// ParameterList OptionalAttrs
5148 /// ::= 'tail' 'call' OptionalCallingConv OptionalAttrs Type Value
5149 /// ParameterList OptionalAttrs
5150 /// ::= 'musttail' 'call' OptionalCallingConv OptionalAttrs Type Value
5151 /// ParameterList OptionalAttrs
5152 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
5153 CallInst::TailCallKind TCK) {
5154 AttrBuilder RetAttrs, FnAttrs;
5155 std::vector<unsigned> FwdRefAttrGrps;
5158 Type *RetType = nullptr;
5161 SmallVector<ParamInfo, 16> ArgList;
5162 LocTy CallLoc = Lex.getLoc();
5164 if ((TCK != CallInst::TCK_None &&
5165 ParseToken(lltok::kw_call, "expected 'tail call'")) ||
5166 ParseOptionalCallingConv(CC) ||
5167 ParseOptionalReturnAttrs(RetAttrs) ||
5168 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
5169 ParseValID(CalleeID) ||
5170 ParseParameterList(ArgList, PFS, TCK == CallInst::TCK_MustTail,
5171 PFS.getFunction().isVarArg()) ||
5172 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
5176 // If RetType is a non-function pointer type, then this is the short syntax
5177 // for the call, which means that RetType is just the return type. Infer the
5178 // rest of the function argument types from the arguments that are present.
5179 FunctionType *Ty = dyn_cast<FunctionType>(RetType);
5181 // Pull out the types of all of the arguments...
5182 std::vector<Type*> ParamTypes;
5183 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
5184 ParamTypes.push_back(ArgList[i].V->getType());
5186 if (!FunctionType::isValidReturnType(RetType))
5187 return Error(RetTypeLoc, "Invalid result type for LLVM function");
5189 Ty = FunctionType::get(RetType, ParamTypes, false);
5192 // Look up the callee.
5194 if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS))
5197 // Set up the Attribute for the function.
5198 SmallVector<AttributeSet, 8> Attrs;
5199 if (RetAttrs.hasAttributes())
5200 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5201 AttributeSet::ReturnIndex,
5204 SmallVector<Value*, 8> Args;
5206 // Loop through FunctionType's arguments and ensure they are specified
5207 // correctly. Also, gather any parameter attributes.
5208 FunctionType::param_iterator I = Ty->param_begin();
5209 FunctionType::param_iterator E = Ty->param_end();
5210 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
5211 Type *ExpectedTy = nullptr;
5214 } else if (!Ty->isVarArg()) {
5215 return Error(ArgList[i].Loc, "too many arguments specified");
5218 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
5219 return Error(ArgList[i].Loc, "argument is not of expected type '" +
5220 getTypeString(ExpectedTy) + "'");
5221 Args.push_back(ArgList[i].V);
5222 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
5223 AttrBuilder B(ArgList[i].Attrs, i + 1);
5224 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
5229 return Error(CallLoc, "not enough parameters specified for call");
5231 if (FnAttrs.hasAttributes()) {
5232 if (FnAttrs.hasAlignmentAttr())
5233 return Error(CallLoc, "call instructions may not have an alignment");
5235 Attrs.push_back(AttributeSet::get(RetType->getContext(),
5236 AttributeSet::FunctionIndex,
5240 // Finish off the Attribute and check them
5241 AttributeSet PAL = AttributeSet::get(Context, Attrs);
5243 CallInst *CI = CallInst::Create(Ty, Callee, Args);
5244 CI->setTailCallKind(TCK);
5245 CI->setCallingConv(CC);
5246 CI->setAttributes(PAL);
5247 ForwardRefAttrGroups[CI] = FwdRefAttrGrps;
5252 //===----------------------------------------------------------------------===//
5253 // Memory Instructions.
5254 //===----------------------------------------------------------------------===//
5257 /// ::= 'alloca' 'inalloca'? Type (',' TypeAndValue)? (',' 'align' i32)?
5258 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
5259 Value *Size = nullptr;
5260 LocTy SizeLoc, TyLoc;
5261 unsigned Alignment = 0;
5264 bool IsInAlloca = EatIfPresent(lltok::kw_inalloca);
5266 if (ParseType(Ty, TyLoc)) return true;
5268 if (Ty->isFunctionTy() || !PointerType::isValidElementType(Ty))
5269 return Error(TyLoc, "invalid type for alloca");
5271 bool AteExtraComma = false;
5272 if (EatIfPresent(lltok::comma)) {
5273 if (Lex.getKind() == lltok::kw_align) {
5274 if (ParseOptionalAlignment(Alignment)) return true;
5275 } else if (Lex.getKind() == lltok::MetadataVar) {
5276 AteExtraComma = true;
5278 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
5279 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5284 if (Size && !Size->getType()->isIntegerTy())
5285 return Error(SizeLoc, "element count must have integer type");
5287 AllocaInst *AI = new AllocaInst(Ty, Size, Alignment);
5288 AI->setUsedWithInAlloca(IsInAlloca);
5290 return AteExtraComma ? InstExtraComma : InstNormal;
5294 /// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
5295 /// ::= 'load' 'atomic' 'volatile'? TypeAndValue
5296 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
5297 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
5298 Value *Val; LocTy Loc;
5299 unsigned Alignment = 0;
5300 bool AteExtraComma = false;
5301 bool isAtomic = false;
5302 AtomicOrdering Ordering = NotAtomic;
5303 SynchronizationScope Scope = CrossThread;
5305 if (Lex.getKind() == lltok::kw_atomic) {
5310 bool isVolatile = false;
5311 if (Lex.getKind() == lltok::kw_volatile) {
5317 LocTy ExplicitTypeLoc = Lex.getLoc();
5318 if (ParseType(Ty) ||
5319 ParseToken(lltok::comma, "expected comma after load's type") ||
5320 ParseTypeAndValue(Val, Loc, PFS) ||
5321 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
5322 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5325 if (!Val->getType()->isPointerTy() || !Ty->isFirstClassType())
5326 return Error(Loc, "load operand must be a pointer to a first class type");
5327 if (isAtomic && !Alignment)
5328 return Error(Loc, "atomic load must have explicit non-zero alignment");
5329 if (Ordering == Release || Ordering == AcquireRelease)
5330 return Error(Loc, "atomic load cannot use Release ordering");
5332 if (Ty != cast<PointerType>(Val->getType())->getElementType())
5333 return Error(ExplicitTypeLoc,
5334 "explicit pointee type doesn't match operand's pointee type");
5336 Inst = new LoadInst(Ty, Val, "", isVolatile, Alignment, Ordering, Scope);
5337 return AteExtraComma ? InstExtraComma : InstNormal;
5342 /// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
5343 /// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
5344 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
5345 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
5346 Value *Val, *Ptr; LocTy Loc, PtrLoc;
5347 unsigned Alignment = 0;
5348 bool AteExtraComma = false;
5349 bool isAtomic = false;
5350 AtomicOrdering Ordering = NotAtomic;
5351 SynchronizationScope Scope = CrossThread;
5353 if (Lex.getKind() == lltok::kw_atomic) {
5358 bool isVolatile = false;
5359 if (Lex.getKind() == lltok::kw_volatile) {
5364 if (ParseTypeAndValue(Val, Loc, PFS) ||
5365 ParseToken(lltok::comma, "expected ',' after store operand") ||
5366 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5367 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
5368 ParseOptionalCommaAlign(Alignment, AteExtraComma))
5371 if (!Ptr->getType()->isPointerTy())
5372 return Error(PtrLoc, "store operand must be a pointer");
5373 if (!Val->getType()->isFirstClassType())
5374 return Error(Loc, "store operand must be a first class value");
5375 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
5376 return Error(Loc, "stored value and pointer type do not match");
5377 if (isAtomic && !Alignment)
5378 return Error(Loc, "atomic store must have explicit non-zero alignment");
5379 if (Ordering == Acquire || Ordering == AcquireRelease)
5380 return Error(Loc, "atomic store cannot use Acquire ordering");
5382 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, Scope);
5383 return AteExtraComma ? InstExtraComma : InstNormal;
5387 /// ::= 'cmpxchg' 'weak'? 'volatile'? TypeAndValue ',' TypeAndValue ','
5388 /// TypeAndValue 'singlethread'? AtomicOrdering AtomicOrdering
5389 int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
5390 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
5391 bool AteExtraComma = false;
5392 AtomicOrdering SuccessOrdering = NotAtomic;
5393 AtomicOrdering FailureOrdering = NotAtomic;
5394 SynchronizationScope Scope = CrossThread;
5395 bool isVolatile = false;
5396 bool isWeak = false;
5398 if (EatIfPresent(lltok::kw_weak))
5401 if (EatIfPresent(lltok::kw_volatile))
5404 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5405 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
5406 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
5407 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
5408 ParseTypeAndValue(New, NewLoc, PFS) ||
5409 ParseScopeAndOrdering(true /*Always atomic*/, Scope, SuccessOrdering) ||
5410 ParseOrdering(FailureOrdering))
5413 if (SuccessOrdering == Unordered || FailureOrdering == Unordered)
5414 return TokError("cmpxchg cannot be unordered");
5415 if (SuccessOrdering < FailureOrdering)
5416 return TokError("cmpxchg must be at least as ordered on success as failure");
5417 if (FailureOrdering == Release || FailureOrdering == AcquireRelease)
5418 return TokError("cmpxchg failure ordering cannot include release semantics");
5419 if (!Ptr->getType()->isPointerTy())
5420 return Error(PtrLoc, "cmpxchg operand must be a pointer");
5421 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
5422 return Error(CmpLoc, "compare value and pointer type do not match");
5423 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
5424 return Error(NewLoc, "new value and pointer type do not match");
5425 if (!New->getType()->isIntegerTy())
5426 return Error(NewLoc, "cmpxchg operand must be an integer");
5427 unsigned Size = New->getType()->getPrimitiveSizeInBits();
5428 if (Size < 8 || (Size & (Size - 1)))
5429 return Error(NewLoc, "cmpxchg operand must be power-of-two byte-sized"
5432 AtomicCmpXchgInst *CXI = new AtomicCmpXchgInst(
5433 Ptr, Cmp, New, SuccessOrdering, FailureOrdering, Scope);
5434 CXI->setVolatile(isVolatile);
5435 CXI->setWeak(isWeak);
5437 return AteExtraComma ? InstExtraComma : InstNormal;
5441 /// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
5442 /// 'singlethread'? AtomicOrdering
5443 int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
5444 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
5445 bool AteExtraComma = false;
5446 AtomicOrdering Ordering = NotAtomic;
5447 SynchronizationScope Scope = CrossThread;
5448 bool isVolatile = false;
5449 AtomicRMWInst::BinOp Operation;
5451 if (EatIfPresent(lltok::kw_volatile))
5454 switch (Lex.getKind()) {
5455 default: return TokError("expected binary operation in atomicrmw");
5456 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
5457 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
5458 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
5459 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
5460 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
5461 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
5462 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
5463 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
5464 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
5465 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
5466 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
5468 Lex.Lex(); // Eat the operation.
5470 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5471 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
5472 ParseTypeAndValue(Val, ValLoc, PFS) ||
5473 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
5476 if (Ordering == Unordered)
5477 return TokError("atomicrmw cannot be unordered");
5478 if (!Ptr->getType()->isPointerTy())
5479 return Error(PtrLoc, "atomicrmw operand must be a pointer");
5480 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
5481 return Error(ValLoc, "atomicrmw value and pointer type do not match");
5482 if (!Val->getType()->isIntegerTy())
5483 return Error(ValLoc, "atomicrmw operand must be an integer");
5484 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
5485 if (Size < 8 || (Size & (Size - 1)))
5486 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
5489 AtomicRMWInst *RMWI =
5490 new AtomicRMWInst(Operation, Ptr, Val, Ordering, Scope);
5491 RMWI->setVolatile(isVolatile);
5493 return AteExtraComma ? InstExtraComma : InstNormal;
5497 /// ::= 'fence' 'singlethread'? AtomicOrdering
5498 int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
5499 AtomicOrdering Ordering = NotAtomic;
5500 SynchronizationScope Scope = CrossThread;
5501 if (ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
5504 if (Ordering == Unordered)
5505 return TokError("fence cannot be unordered");
5506 if (Ordering == Monotonic)
5507 return TokError("fence cannot be monotonic");
5509 Inst = new FenceInst(Context, Ordering, Scope);
5513 /// ParseGetElementPtr
5514 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
5515 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
5516 Value *Ptr = nullptr;
5517 Value *Val = nullptr;
5520 bool InBounds = EatIfPresent(lltok::kw_inbounds);
5523 LocTy ExplicitTypeLoc = Lex.getLoc();
5524 if (ParseType(Ty) ||
5525 ParseToken(lltok::comma, "expected comma after getelementptr's type") ||
5526 ParseTypeAndValue(Ptr, Loc, PFS))
5529 Type *BaseType = Ptr->getType();
5530 PointerType *BasePointerType = dyn_cast<PointerType>(BaseType->getScalarType());
5531 if (!BasePointerType)
5532 return Error(Loc, "base of getelementptr must be a pointer");
5534 if (Ty != BasePointerType->getElementType())
5535 return Error(ExplicitTypeLoc,
5536 "explicit pointee type doesn't match operand's pointee type");
5538 SmallVector<Value*, 16> Indices;
5539 bool AteExtraComma = false;
5540 while (EatIfPresent(lltok::comma)) {
5541 if (Lex.getKind() == lltok::MetadataVar) {
5542 AteExtraComma = true;
5545 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
5546 if (!Val->getType()->getScalarType()->isIntegerTy())
5547 return Error(EltLoc, "getelementptr index must be an integer");
5548 if (Val->getType()->isVectorTy() != Ptr->getType()->isVectorTy())
5549 return Error(EltLoc, "getelementptr index type missmatch");
5550 if (Val->getType()->isVectorTy()) {
5551 unsigned ValNumEl = cast<VectorType>(Val->getType())->getNumElements();
5552 unsigned PtrNumEl = cast<VectorType>(Ptr->getType())->getNumElements();
5553 if (ValNumEl != PtrNumEl)
5554 return Error(EltLoc,
5555 "getelementptr vector index has a wrong number of elements");
5557 Indices.push_back(Val);
5560 SmallPtrSet<const Type*, 4> Visited;
5561 if (!Indices.empty() && !Ty->isSized(&Visited))
5562 return Error(Loc, "base element of getelementptr must be sized");
5564 if (!GetElementPtrInst::getIndexedType(Ty, Indices))
5565 return Error(Loc, "invalid getelementptr indices");
5566 Inst = GetElementPtrInst::Create(Ty, Ptr, Indices);
5568 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
5569 return AteExtraComma ? InstExtraComma : InstNormal;
5572 /// ParseExtractValue
5573 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
5574 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
5575 Value *Val; LocTy Loc;
5576 SmallVector<unsigned, 4> Indices;
5578 if (ParseTypeAndValue(Val, Loc, PFS) ||
5579 ParseIndexList(Indices, AteExtraComma))
5582 if (!Val->getType()->isAggregateType())
5583 return Error(Loc, "extractvalue operand must be aggregate type");
5585 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
5586 return Error(Loc, "invalid indices for extractvalue");
5587 Inst = ExtractValueInst::Create(Val, Indices);
5588 return AteExtraComma ? InstExtraComma : InstNormal;
5591 /// ParseInsertValue
5592 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
5593 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
5594 Value *Val0, *Val1; LocTy Loc0, Loc1;
5595 SmallVector<unsigned, 4> Indices;
5597 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
5598 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
5599 ParseTypeAndValue(Val1, Loc1, PFS) ||
5600 ParseIndexList(Indices, AteExtraComma))
5603 if (!Val0->getType()->isAggregateType())
5604 return Error(Loc0, "insertvalue operand must be aggregate type");
5606 Type *IndexedType = ExtractValueInst::getIndexedType(Val0->getType(), Indices);
5608 return Error(Loc0, "invalid indices for insertvalue");
5609 if (IndexedType != Val1->getType())
5610 return Error(Loc1, "insertvalue operand and field disagree in type: '" +
5611 getTypeString(Val1->getType()) + "' instead of '" +
5612 getTypeString(IndexedType) + "'");
5613 Inst = InsertValueInst::Create(Val0, Val1, Indices);
5614 return AteExtraComma ? InstExtraComma : InstNormal;
5617 //===----------------------------------------------------------------------===//
5618 // Embedded metadata.
5619 //===----------------------------------------------------------------------===//
5621 /// ParseMDNodeVector
5622 /// ::= { Element (',' Element)* }
5624 /// ::= 'null' | TypeAndValue
5625 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Metadata *> &Elts) {
5626 if (ParseToken(lltok::lbrace, "expected '{' here"))
5629 // Check for an empty list.
5630 if (EatIfPresent(lltok::rbrace))
5634 // Null is a special case since it is typeless.
5635 if (EatIfPresent(lltok::kw_null)) {
5636 Elts.push_back(nullptr);
5641 if (ParseMetadata(MD, nullptr))
5644 } while (EatIfPresent(lltok::comma));
5646 return ParseToken(lltok::rbrace, "expected end of metadata node");
5649 //===----------------------------------------------------------------------===//
5650 // Use-list order directives.
5651 //===----------------------------------------------------------------------===//
5652 bool LLParser::sortUseListOrder(Value *V, ArrayRef<unsigned> Indexes,
5655 return Error(Loc, "value has no uses");
5657 unsigned NumUses = 0;
5658 SmallDenseMap<const Use *, unsigned, 16> Order;
5659 for (const Use &U : V->uses()) {
5660 if (++NumUses > Indexes.size())
5662 Order[&U] = Indexes[NumUses - 1];
5665 return Error(Loc, "value only has one use");
5666 if (Order.size() != Indexes.size() || NumUses > Indexes.size())
5667 return Error(Loc, "wrong number of indexes, expected " +
5668 Twine(std::distance(V->use_begin(), V->use_end())));
5670 V->sortUseList([&](const Use &L, const Use &R) {
5671 return Order.lookup(&L) < Order.lookup(&R);
5676 /// ParseUseListOrderIndexes
5677 /// ::= '{' uint32 (',' uint32)+ '}'
5678 bool LLParser::ParseUseListOrderIndexes(SmallVectorImpl<unsigned> &Indexes) {
5679 SMLoc Loc = Lex.getLoc();
5680 if (ParseToken(lltok::lbrace, "expected '{' here"))
5682 if (Lex.getKind() == lltok::rbrace)
5683 return Lex.Error("expected non-empty list of uselistorder indexes");
5685 // Use Offset, Max, and IsOrdered to check consistency of indexes. The
5686 // indexes should be distinct numbers in the range [0, size-1], and should
5688 unsigned Offset = 0;
5690 bool IsOrdered = true;
5691 assert(Indexes.empty() && "Expected empty order vector");
5694 if (ParseUInt32(Index))
5697 // Update consistency checks.
5698 Offset += Index - Indexes.size();
5699 Max = std::max(Max, Index);
5700 IsOrdered &= Index == Indexes.size();
5702 Indexes.push_back(Index);
5703 } while (EatIfPresent(lltok::comma));
5705 if (ParseToken(lltok::rbrace, "expected '}' here"))
5708 if (Indexes.size() < 2)
5709 return Error(Loc, "expected >= 2 uselistorder indexes");
5710 if (Offset != 0 || Max >= Indexes.size())
5711 return Error(Loc, "expected distinct uselistorder indexes in range [0, size)");
5713 return Error(Loc, "expected uselistorder indexes to change the order");
5718 /// ParseUseListOrder
5719 /// ::= 'uselistorder' Type Value ',' UseListOrderIndexes
5720 bool LLParser::ParseUseListOrder(PerFunctionState *PFS) {
5721 SMLoc Loc = Lex.getLoc();
5722 if (ParseToken(lltok::kw_uselistorder, "expected uselistorder directive"))
5726 SmallVector<unsigned, 16> Indexes;
5727 if (ParseTypeAndValue(V, PFS) ||
5728 ParseToken(lltok::comma, "expected comma in uselistorder directive") ||
5729 ParseUseListOrderIndexes(Indexes))
5732 return sortUseListOrder(V, Indexes, Loc);
5735 /// ParseUseListOrderBB
5736 /// ::= 'uselistorder_bb' @foo ',' %bar ',' UseListOrderIndexes
5737 bool LLParser::ParseUseListOrderBB() {
5738 assert(Lex.getKind() == lltok::kw_uselistorder_bb);
5739 SMLoc Loc = Lex.getLoc();
5743 SmallVector<unsigned, 16> Indexes;
5744 if (ParseValID(Fn) ||
5745 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
5746 ParseValID(Label) ||
5747 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
5748 ParseUseListOrderIndexes(Indexes))
5751 // Check the function.
5753 if (Fn.Kind == ValID::t_GlobalName)
5754 GV = M->getNamedValue(Fn.StrVal);
5755 else if (Fn.Kind == ValID::t_GlobalID)
5756 GV = Fn.UIntVal < NumberedVals.size() ? NumberedVals[Fn.UIntVal] : nullptr;
5758 return Error(Fn.Loc, "expected function name in uselistorder_bb");
5760 return Error(Fn.Loc, "invalid function forward reference in uselistorder_bb");
5761 auto *F = dyn_cast<Function>(GV);
5763 return Error(Fn.Loc, "expected function name in uselistorder_bb");
5764 if (F->isDeclaration())
5765 return Error(Fn.Loc, "invalid declaration in uselistorder_bb");
5767 // Check the basic block.
5768 if (Label.Kind == ValID::t_LocalID)
5769 return Error(Label.Loc, "invalid numeric label in uselistorder_bb");
5770 if (Label.Kind != ValID::t_LocalName)
5771 return Error(Label.Loc, "expected basic block name in uselistorder_bb");
5772 Value *V = F->getValueSymbolTable().lookup(Label.StrVal);
5774 return Error(Label.Loc, "invalid basic block in uselistorder_bb");
5775 if (!isa<BasicBlock>(V))
5776 return Error(Label.Loc, "expected basic block in uselistorder_bb");
5778 return sortUseListOrder(V, Indexes, Loc);