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/DerivedTypes.h"
20 #include "llvm/IR/InlineAsm.h"
21 #include "llvm/IR/Instructions.h"
22 #include "llvm/IR/LLVMContext.h"
23 #include "llvm/IR/Module.h"
24 #include "llvm/IR/Operator.h"
25 #include "llvm/IR/ValueSymbolTable.h"
26 #include "llvm/Support/ErrorHandling.h"
27 #include "llvm/Support/SaveAndRestore.h"
28 #include "llvm/Support/raw_ostream.h"
31 static std::string getTypeString(Type *T) {
33 raw_string_ostream Tmp(Result);
38 /// Run: module ::= toplevelentity*
39 bool LLParser::Run() {
43 return ParseTopLevelEntities() ||
44 ValidateEndOfModule();
47 /// ValidateEndOfModule - Do final validity and sanity checks at the end of the
49 bool LLParser::ValidateEndOfModule() {
50 for (unsigned I = 0, E = InstsWithTBAATag.size(); I < E; I++)
51 UpgradeInstWithTBAATag(InstsWithTBAATag[I]);
53 // Handle any function attribute group forward references.
54 for (std::map<Value*, std::vector<unsigned> >::iterator
55 I = ForwardRefAttrGroups.begin(), E = ForwardRefAttrGroups.end();
58 std::vector<unsigned> &Vec = I->second;
61 for (std::vector<unsigned>::iterator VI = Vec.begin(), VE = Vec.end();
63 B.merge(NumberedAttrBuilders[*VI]);
65 if (Function *Fn = dyn_cast<Function>(V)) {
66 AttributeSet AS = Fn->getAttributes();
67 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
68 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
69 AS.getFnAttributes());
73 // If the alignment was parsed as an attribute, move to the alignment
75 if (FnAttrs.hasAlignmentAttr()) {
76 Fn->setAlignment(FnAttrs.getAlignment());
77 FnAttrs.removeAttribute(Attribute::Alignment);
80 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
81 AttributeSet::get(Context,
82 AttributeSet::FunctionIndex,
84 Fn->setAttributes(AS);
85 } else if (CallInst *CI = dyn_cast<CallInst>(V)) {
86 AttributeSet AS = CI->getAttributes();
87 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
88 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
89 AS.getFnAttributes());
91 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
92 AttributeSet::get(Context,
93 AttributeSet::FunctionIndex,
95 CI->setAttributes(AS);
96 } else if (InvokeInst *II = dyn_cast<InvokeInst>(V)) {
97 AttributeSet AS = II->getAttributes();
98 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
99 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
100 AS.getFnAttributes());
102 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
103 AttributeSet::get(Context,
104 AttributeSet::FunctionIndex,
106 II->setAttributes(AS);
108 llvm_unreachable("invalid object with forward attribute group reference");
112 // If there are entries in ForwardRefBlockAddresses at this point, the
113 // function was never defined.
114 if (!ForwardRefBlockAddresses.empty())
115 return Error(ForwardRefBlockAddresses.begin()->first.Loc,
116 "expected function name in blockaddress");
118 for (unsigned i = 0, e = NumberedTypes.size(); i != e; ++i)
119 if (NumberedTypes[i].second.isValid())
120 return Error(NumberedTypes[i].second,
121 "use of undefined type '%" + Twine(i) + "'");
123 for (StringMap<std::pair<Type*, LocTy> >::iterator I =
124 NamedTypes.begin(), E = NamedTypes.end(); I != E; ++I)
125 if (I->second.second.isValid())
126 return Error(I->second.second,
127 "use of undefined type named '" + I->getKey() + "'");
129 if (!ForwardRefComdats.empty())
130 return Error(ForwardRefComdats.begin()->second,
131 "use of undefined comdat '$" +
132 ForwardRefComdats.begin()->first + "'");
134 if (!ForwardRefVals.empty())
135 return Error(ForwardRefVals.begin()->second.second,
136 "use of undefined value '@" + ForwardRefVals.begin()->first +
139 if (!ForwardRefValIDs.empty())
140 return Error(ForwardRefValIDs.begin()->second.second,
141 "use of undefined value '@" +
142 Twine(ForwardRefValIDs.begin()->first) + "'");
144 if (!ForwardRefMDNodes.empty())
145 return Error(ForwardRefMDNodes.begin()->second.second,
146 "use of undefined metadata '!" +
147 Twine(ForwardRefMDNodes.begin()->first) + "'");
149 // Resolve metadata cycles.
150 for (auto &N : NumberedMetadata)
151 if (auto *U = cast_or_null<UniquableMDNode>(N))
154 // Look for intrinsic functions and CallInst that need to be upgraded
155 for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; )
156 UpgradeCallsToIntrinsic(FI++); // must be post-increment, as we remove
158 UpgradeDebugInfo(*M);
163 //===----------------------------------------------------------------------===//
164 // Top-Level Entities
165 //===----------------------------------------------------------------------===//
167 bool LLParser::ParseTopLevelEntities() {
169 switch (Lex.getKind()) {
170 default: return TokError("expected top-level entity");
171 case lltok::Eof: return false;
172 case lltok::kw_declare: if (ParseDeclare()) return true; break;
173 case lltok::kw_define: if (ParseDefine()) return true; break;
174 case lltok::kw_module: if (ParseModuleAsm()) return true; break;
175 case lltok::kw_target: if (ParseTargetDefinition()) return true; break;
176 case lltok::kw_deplibs: if (ParseDepLibs()) return true; break;
177 case lltok::LocalVarID: if (ParseUnnamedType()) return true; break;
178 case lltok::LocalVar: if (ParseNamedType()) return true; break;
179 case lltok::GlobalID: if (ParseUnnamedGlobal()) return true; break;
180 case lltok::GlobalVar: if (ParseNamedGlobal()) return true; break;
181 case lltok::ComdatVar: if (parseComdat()) return true; break;
182 case lltok::exclaim: if (ParseStandaloneMetadata()) return true; break;
183 case lltok::MetadataVar:if (ParseNamedMetadata()) return true; break;
185 // The Global variable production with no name can have many different
186 // optional leading prefixes, the production is:
187 // GlobalVar ::= OptionalLinkage OptionalVisibility OptionalDLLStorageClass
188 // OptionalThreadLocal OptionalAddrSpace OptionalUnNammedAddr
189 // ('constant'|'global') ...
190 case lltok::kw_private: // OptionalLinkage
191 case lltok::kw_internal: // OptionalLinkage
192 case lltok::kw_weak: // OptionalLinkage
193 case lltok::kw_weak_odr: // OptionalLinkage
194 case lltok::kw_linkonce: // OptionalLinkage
195 case lltok::kw_linkonce_odr: // OptionalLinkage
196 case lltok::kw_appending: // OptionalLinkage
197 case lltok::kw_common: // OptionalLinkage
198 case lltok::kw_extern_weak: // OptionalLinkage
199 case lltok::kw_external: // OptionalLinkage
200 case lltok::kw_default: // OptionalVisibility
201 case lltok::kw_hidden: // OptionalVisibility
202 case lltok::kw_protected: // OptionalVisibility
203 case lltok::kw_dllimport: // OptionalDLLStorageClass
204 case lltok::kw_dllexport: // OptionalDLLStorageClass
205 case lltok::kw_thread_local: // OptionalThreadLocal
206 case lltok::kw_addrspace: // OptionalAddrSpace
207 case lltok::kw_constant: // GlobalType
208 case lltok::kw_global: { // GlobalType
209 unsigned Linkage, Visibility, DLLStorageClass;
211 GlobalVariable::ThreadLocalMode TLM;
213 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
214 ParseOptionalVisibility(Visibility) ||
215 ParseOptionalDLLStorageClass(DLLStorageClass) ||
216 ParseOptionalThreadLocal(TLM) ||
217 parseOptionalUnnamedAddr(UnnamedAddr) ||
218 ParseGlobal("", SMLoc(), Linkage, HasLinkage, Visibility,
219 DLLStorageClass, TLM, UnnamedAddr))
224 case lltok::kw_attributes: if (ParseUnnamedAttrGrp()) return true; break;
225 case lltok::kw_uselistorder: if (ParseUseListOrder()) return true; break;
226 case lltok::kw_uselistorder_bb:
227 if (ParseUseListOrderBB()) return true; break;
234 /// ::= 'module' 'asm' STRINGCONSTANT
235 bool LLParser::ParseModuleAsm() {
236 assert(Lex.getKind() == lltok::kw_module);
240 if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
241 ParseStringConstant(AsmStr)) return true;
243 M->appendModuleInlineAsm(AsmStr);
248 /// ::= 'target' 'triple' '=' STRINGCONSTANT
249 /// ::= 'target' 'datalayout' '=' STRINGCONSTANT
250 bool LLParser::ParseTargetDefinition() {
251 assert(Lex.getKind() == lltok::kw_target);
254 default: return TokError("unknown target property");
255 case lltok::kw_triple:
257 if (ParseToken(lltok::equal, "expected '=' after target triple") ||
258 ParseStringConstant(Str))
260 M->setTargetTriple(Str);
262 case lltok::kw_datalayout:
264 if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
265 ParseStringConstant(Str))
267 M->setDataLayout(Str);
273 /// ::= 'deplibs' '=' '[' ']'
274 /// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
275 /// FIXME: Remove in 4.0. Currently parse, but ignore.
276 bool LLParser::ParseDepLibs() {
277 assert(Lex.getKind() == lltok::kw_deplibs);
279 if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
280 ParseToken(lltok::lsquare, "expected '=' after deplibs"))
283 if (EatIfPresent(lltok::rsquare))
288 if (ParseStringConstant(Str)) return true;
289 } while (EatIfPresent(lltok::comma));
291 return ParseToken(lltok::rsquare, "expected ']' at end of list");
294 /// ParseUnnamedType:
295 /// ::= LocalVarID '=' 'type' type
296 bool LLParser::ParseUnnamedType() {
297 LocTy TypeLoc = Lex.getLoc();
298 unsigned TypeID = Lex.getUIntVal();
299 Lex.Lex(); // eat LocalVarID;
301 if (ParseToken(lltok::equal, "expected '=' after name") ||
302 ParseToken(lltok::kw_type, "expected 'type' after '='"))
305 if (TypeID >= NumberedTypes.size())
306 NumberedTypes.resize(TypeID+1);
308 Type *Result = nullptr;
309 if (ParseStructDefinition(TypeLoc, "",
310 NumberedTypes[TypeID], Result)) return true;
312 if (!isa<StructType>(Result)) {
313 std::pair<Type*, LocTy> &Entry = NumberedTypes[TypeID];
315 return Error(TypeLoc, "non-struct types may not be recursive");
316 Entry.first = Result;
317 Entry.second = SMLoc();
325 /// ::= LocalVar '=' 'type' type
326 bool LLParser::ParseNamedType() {
327 std::string Name = Lex.getStrVal();
328 LocTy NameLoc = Lex.getLoc();
329 Lex.Lex(); // eat LocalVar.
331 if (ParseToken(lltok::equal, "expected '=' after name") ||
332 ParseToken(lltok::kw_type, "expected 'type' after name"))
335 Type *Result = nullptr;
336 if (ParseStructDefinition(NameLoc, Name,
337 NamedTypes[Name], Result)) return true;
339 if (!isa<StructType>(Result)) {
340 std::pair<Type*, LocTy> &Entry = NamedTypes[Name];
342 return Error(NameLoc, "non-struct types may not be recursive");
343 Entry.first = Result;
344 Entry.second = SMLoc();
352 /// ::= 'declare' FunctionHeader
353 bool LLParser::ParseDeclare() {
354 assert(Lex.getKind() == lltok::kw_declare);
358 return ParseFunctionHeader(F, false);
362 /// ::= 'define' FunctionHeader '{' ...
363 bool LLParser::ParseDefine() {
364 assert(Lex.getKind() == lltok::kw_define);
368 return ParseFunctionHeader(F, true) ||
369 ParseFunctionBody(*F);
375 bool LLParser::ParseGlobalType(bool &IsConstant) {
376 if (Lex.getKind() == lltok::kw_constant)
378 else if (Lex.getKind() == lltok::kw_global)
382 return TokError("expected 'global' or 'constant'");
388 /// ParseUnnamedGlobal:
389 /// OptionalVisibility ALIAS ...
390 /// OptionalLinkage OptionalVisibility OptionalDLLStorageClass
391 /// ... -> global variable
392 /// GlobalID '=' OptionalVisibility ALIAS ...
393 /// GlobalID '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
394 /// ... -> global variable
395 bool LLParser::ParseUnnamedGlobal() {
396 unsigned VarID = NumberedVals.size();
398 LocTy NameLoc = Lex.getLoc();
400 // Handle the GlobalID form.
401 if (Lex.getKind() == lltok::GlobalID) {
402 if (Lex.getUIntVal() != VarID)
403 return Error(Lex.getLoc(), "variable expected to be numbered '%" +
405 Lex.Lex(); // eat GlobalID;
407 if (ParseToken(lltok::equal, "expected '=' after name"))
412 unsigned Linkage, Visibility, DLLStorageClass;
413 GlobalVariable::ThreadLocalMode TLM;
415 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
416 ParseOptionalVisibility(Visibility) ||
417 ParseOptionalDLLStorageClass(DLLStorageClass) ||
418 ParseOptionalThreadLocal(TLM) ||
419 parseOptionalUnnamedAddr(UnnamedAddr))
422 if (Lex.getKind() != lltok::kw_alias)
423 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility,
424 DLLStorageClass, TLM, UnnamedAddr);
425 return ParseAlias(Name, NameLoc, Linkage, Visibility, DLLStorageClass, TLM,
429 /// ParseNamedGlobal:
430 /// GlobalVar '=' OptionalVisibility ALIAS ...
431 /// GlobalVar '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
432 /// ... -> global variable
433 bool LLParser::ParseNamedGlobal() {
434 assert(Lex.getKind() == lltok::GlobalVar);
435 LocTy NameLoc = Lex.getLoc();
436 std::string Name = Lex.getStrVal();
440 unsigned Linkage, Visibility, DLLStorageClass;
441 GlobalVariable::ThreadLocalMode TLM;
443 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
444 ParseOptionalLinkage(Linkage, HasLinkage) ||
445 ParseOptionalVisibility(Visibility) ||
446 ParseOptionalDLLStorageClass(DLLStorageClass) ||
447 ParseOptionalThreadLocal(TLM) ||
448 parseOptionalUnnamedAddr(UnnamedAddr))
451 if (Lex.getKind() != lltok::kw_alias)
452 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility,
453 DLLStorageClass, TLM, UnnamedAddr);
455 return ParseAlias(Name, NameLoc, Linkage, Visibility, DLLStorageClass, TLM,
459 bool LLParser::parseComdat() {
460 assert(Lex.getKind() == lltok::ComdatVar);
461 std::string Name = Lex.getStrVal();
462 LocTy NameLoc = Lex.getLoc();
465 if (ParseToken(lltok::equal, "expected '=' here"))
468 if (ParseToken(lltok::kw_comdat, "expected comdat keyword"))
469 return TokError("expected comdat type");
471 Comdat::SelectionKind SK;
472 switch (Lex.getKind()) {
474 return TokError("unknown selection kind");
478 case lltok::kw_exactmatch:
479 SK = Comdat::ExactMatch;
481 case lltok::kw_largest:
482 SK = Comdat::Largest;
484 case lltok::kw_noduplicates:
485 SK = Comdat::NoDuplicates;
487 case lltok::kw_samesize:
488 SK = Comdat::SameSize;
493 // See if the comdat was forward referenced, if so, use the comdat.
494 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
495 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
496 if (I != ComdatSymTab.end() && !ForwardRefComdats.erase(Name))
497 return Error(NameLoc, "redefinition of comdat '$" + Name + "'");
500 if (I != ComdatSymTab.end())
503 C = M->getOrInsertComdat(Name);
504 C->setSelectionKind(SK);
510 // ::= '!' STRINGCONSTANT
511 bool LLParser::ParseMDString(MDString *&Result) {
513 if (ParseStringConstant(Str)) return true;
514 llvm::UpgradeMDStringConstant(Str);
515 Result = MDString::get(Context, Str);
520 // ::= '!' MDNodeNumber
521 bool LLParser::ParseMDNodeID(MDNode *&Result) {
522 // !{ ..., !42, ... }
524 if (ParseUInt32(MID))
527 // If not a forward reference, just return it now.
528 if (MID < NumberedMetadata.size() && NumberedMetadata[MID] != nullptr) {
529 Result = NumberedMetadata[MID];
533 // Otherwise, create MDNode forward reference.
534 MDNodeFwdDecl *FwdNode = MDNode::getTemporary(Context, None);
535 ForwardRefMDNodes[MID] = std::make_pair(FwdNode, Lex.getLoc());
537 if (NumberedMetadata.size() <= MID)
538 NumberedMetadata.resize(MID+1);
539 NumberedMetadata[MID].reset(FwdNode);
544 /// ParseNamedMetadata:
545 /// !foo = !{ !1, !2 }
546 bool LLParser::ParseNamedMetadata() {
547 assert(Lex.getKind() == lltok::MetadataVar);
548 std::string Name = Lex.getStrVal();
551 if (ParseToken(lltok::equal, "expected '=' here") ||
552 ParseToken(lltok::exclaim, "Expected '!' here") ||
553 ParseToken(lltok::lbrace, "Expected '{' here"))
556 NamedMDNode *NMD = M->getOrInsertNamedMetadata(Name);
557 if (Lex.getKind() != lltok::rbrace)
559 if (ParseToken(lltok::exclaim, "Expected '!' here"))
563 if (ParseMDNodeID(N)) return true;
565 } while (EatIfPresent(lltok::comma));
567 if (ParseToken(lltok::rbrace, "expected end of metadata node"))
573 /// ParseStandaloneMetadata:
575 bool LLParser::ParseStandaloneMetadata() {
576 assert(Lex.getKind() == lltok::exclaim);
578 unsigned MetadataID = 0;
581 if (ParseUInt32(MetadataID) ||
582 ParseToken(lltok::equal, "expected '=' here"))
585 // Detect common error, from old metadata syntax.
586 if (Lex.getKind() == lltok::Type)
587 return TokError("unexpected type in metadata definition");
589 bool IsDistinct = EatIfPresent(lltok::kw_distinct);
590 if (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 auto *Temp = FI->second.first;
598 Temp->replaceAllUsesWith(Init);
599 MDNode::deleteTemporary(Temp);
600 ForwardRefMDNodes.erase(FI);
602 assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work");
604 if (MetadataID >= NumberedMetadata.size())
605 NumberedMetadata.resize(MetadataID+1);
607 if (NumberedMetadata[MetadataID] != nullptr)
608 return TokError("Metadata id is already used");
609 NumberedMetadata[MetadataID].reset(Init);
615 static bool isValidVisibilityForLinkage(unsigned V, unsigned L) {
616 return !GlobalValue::isLocalLinkage((GlobalValue::LinkageTypes)L) ||
617 (GlobalValue::VisibilityTypes)V == GlobalValue::DefaultVisibility;
621 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility
622 /// OptionalDLLStorageClass OptionalThreadLocal
623 /// OptionalUnNammedAddr 'alias' Aliasee
628 /// Everything through OptionalUnNammedAddr has already been parsed.
630 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc, unsigned L,
631 unsigned Visibility, unsigned DLLStorageClass,
632 GlobalVariable::ThreadLocalMode TLM,
634 assert(Lex.getKind() == lltok::kw_alias);
637 GlobalValue::LinkageTypes Linkage = (GlobalValue::LinkageTypes) L;
639 if(!GlobalAlias::isValidLinkage(Linkage))
640 return Error(NameLoc, "invalid linkage type for alias");
642 if (!isValidVisibilityForLinkage(Visibility, L))
643 return Error(NameLoc,
644 "symbol with local linkage must have default visibility");
647 LocTy AliaseeLoc = Lex.getLoc();
648 if (Lex.getKind() != lltok::kw_bitcast &&
649 Lex.getKind() != lltok::kw_getelementptr &&
650 Lex.getKind() != lltok::kw_addrspacecast &&
651 Lex.getKind() != lltok::kw_inttoptr) {
652 if (ParseGlobalTypeAndValue(Aliasee))
655 // The bitcast dest type is not present, it is implied by the dest type.
659 if (ID.Kind != ValID::t_Constant)
660 return Error(AliaseeLoc, "invalid aliasee");
661 Aliasee = ID.ConstantVal;
664 Type *AliaseeType = Aliasee->getType();
665 auto *PTy = dyn_cast<PointerType>(AliaseeType);
667 return Error(AliaseeLoc, "An alias must have pointer type");
668 Type *Ty = PTy->getElementType();
669 unsigned AddrSpace = PTy->getAddressSpace();
671 // Okay, create the alias but do not insert it into the module yet.
672 std::unique_ptr<GlobalAlias> GA(
673 GlobalAlias::create(Ty, AddrSpace, (GlobalValue::LinkageTypes)Linkage,
674 Name, Aliasee, /*Parent*/ nullptr));
675 GA->setThreadLocalMode(TLM);
676 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
677 GA->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
678 GA->setUnnamedAddr(UnnamedAddr);
680 // See if this value already exists in the symbol table. If so, it is either
681 // a redefinition or a definition of a forward reference.
682 if (GlobalValue *Val = M->getNamedValue(Name)) {
683 // See if this was a redefinition. If so, there is no entry in
685 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
686 I = ForwardRefVals.find(Name);
687 if (I == ForwardRefVals.end())
688 return Error(NameLoc, "redefinition of global named '@" + Name + "'");
690 // Otherwise, this was a definition of forward ref. Verify that types
692 if (Val->getType() != GA->getType())
693 return Error(NameLoc,
694 "forward reference and definition of alias have different types");
696 // If they agree, just RAUW the old value with the alias and remove the
698 Val->replaceAllUsesWith(GA.get());
699 Val->eraseFromParent();
700 ForwardRefVals.erase(I);
703 // Insert into the module, we know its name won't collide now.
704 M->getAliasList().push_back(GA.get());
705 assert(GA->getName() == Name && "Should not be a name conflict!");
707 // The module owns this now
714 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
715 /// OptionalThreadLocal OptionalUnNammedAddr OptionalAddrSpace
716 /// OptionalExternallyInitialized GlobalType Type Const
717 /// ::= OptionalLinkage OptionalVisibility OptionalDLLStorageClass
718 /// OptionalThreadLocal OptionalUnNammedAddr OptionalAddrSpace
719 /// OptionalExternallyInitialized GlobalType Type Const
721 /// Everything up to and including OptionalUnNammedAddr has been parsed
724 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
725 unsigned Linkage, bool HasLinkage,
726 unsigned Visibility, unsigned DLLStorageClass,
727 GlobalVariable::ThreadLocalMode TLM,
729 if (!isValidVisibilityForLinkage(Visibility, Linkage))
730 return Error(NameLoc,
731 "symbol with local linkage must have default visibility");
734 bool IsConstant, IsExternallyInitialized;
735 LocTy IsExternallyInitializedLoc;
739 if (ParseOptionalAddrSpace(AddrSpace) ||
740 ParseOptionalToken(lltok::kw_externally_initialized,
741 IsExternallyInitialized,
742 &IsExternallyInitializedLoc) ||
743 ParseGlobalType(IsConstant) ||
744 ParseType(Ty, TyLoc))
747 // If the linkage is specified and is external, then no initializer is
749 Constant *Init = nullptr;
750 if (!HasLinkage || (Linkage != GlobalValue::ExternalWeakLinkage &&
751 Linkage != GlobalValue::ExternalLinkage)) {
752 if (ParseGlobalValue(Ty, Init))
756 if (Ty->isFunctionTy() || Ty->isLabelTy())
757 return Error(TyLoc, "invalid type for global variable");
759 GlobalValue *GVal = nullptr;
761 // See if the global was forward referenced, if so, use the global.
763 GVal = M->getNamedValue(Name);
765 if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
766 return Error(NameLoc, "redefinition of global '@" + Name + "'");
769 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
770 I = ForwardRefValIDs.find(NumberedVals.size());
771 if (I != ForwardRefValIDs.end()) {
772 GVal = I->second.first;
773 ForwardRefValIDs.erase(I);
779 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, nullptr,
780 Name, nullptr, GlobalVariable::NotThreadLocal,
783 if (GVal->getType()->getElementType() != Ty)
785 "forward reference and definition of global have different types");
787 GV = cast<GlobalVariable>(GVal);
789 // Move the forward-reference to the correct spot in the module.
790 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
794 NumberedVals.push_back(GV);
796 // Set the parsed properties on the global.
798 GV->setInitializer(Init);
799 GV->setConstant(IsConstant);
800 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
801 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
802 GV->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
803 GV->setExternallyInitialized(IsExternallyInitialized);
804 GV->setThreadLocalMode(TLM);
805 GV->setUnnamedAddr(UnnamedAddr);
807 // Parse attributes on the global.
808 while (Lex.getKind() == lltok::comma) {
811 if (Lex.getKind() == lltok::kw_section) {
813 GV->setSection(Lex.getStrVal());
814 if (ParseToken(lltok::StringConstant, "expected global section string"))
816 } else if (Lex.getKind() == lltok::kw_align) {
818 if (ParseOptionalAlignment(Alignment)) return true;
819 GV->setAlignment(Alignment);
822 if (parseOptionalComdat(Name, C))
827 return TokError("unknown global variable property!");
834 /// ParseUnnamedAttrGrp
835 /// ::= 'attributes' AttrGrpID '=' '{' AttrValPair+ '}'
836 bool LLParser::ParseUnnamedAttrGrp() {
837 assert(Lex.getKind() == lltok::kw_attributes);
838 LocTy AttrGrpLoc = Lex.getLoc();
841 if (Lex.getKind() != lltok::AttrGrpID)
842 return TokError("expected attribute group id");
844 unsigned VarID = Lex.getUIntVal();
845 std::vector<unsigned> unused;
849 if (ParseToken(lltok::equal, "expected '=' here") ||
850 ParseToken(lltok::lbrace, "expected '{' here") ||
851 ParseFnAttributeValuePairs(NumberedAttrBuilders[VarID], unused, true,
853 ParseToken(lltok::rbrace, "expected end of attribute group"))
856 if (!NumberedAttrBuilders[VarID].hasAttributes())
857 return Error(AttrGrpLoc, "attribute group has no attributes");
862 /// ParseFnAttributeValuePairs
863 /// ::= <attr> | <attr> '=' <value>
864 bool LLParser::ParseFnAttributeValuePairs(AttrBuilder &B,
865 std::vector<unsigned> &FwdRefAttrGrps,
866 bool inAttrGrp, LocTy &BuiltinLoc) {
867 bool HaveError = false;
872 lltok::Kind Token = Lex.getKind();
873 if (Token == lltok::kw_builtin)
874 BuiltinLoc = Lex.getLoc();
877 if (!inAttrGrp) return HaveError;
878 return Error(Lex.getLoc(), "unterminated attribute group");
883 case lltok::AttrGrpID: {
884 // Allow a function to reference an attribute group:
886 // define void @foo() #1 { ... }
890 "cannot have an attribute group reference in an attribute group");
892 unsigned AttrGrpNum = Lex.getUIntVal();
893 if (inAttrGrp) break;
895 // Save the reference to the attribute group. We'll fill it in later.
896 FwdRefAttrGrps.push_back(AttrGrpNum);
899 // Target-dependent attributes:
900 case lltok::StringConstant: {
901 std::string Attr = Lex.getStrVal();
904 if (EatIfPresent(lltok::equal) &&
905 ParseStringConstant(Val))
908 B.addAttribute(Attr, Val);
912 // Target-independent attributes:
913 case lltok::kw_align: {
914 // As a hack, we allow function alignment to be initially parsed as an
915 // attribute on a function declaration/definition or added to an attribute
916 // group and later moved to the alignment field.
920 if (ParseToken(lltok::equal, "expected '=' here") ||
921 ParseUInt32(Alignment))
924 if (ParseOptionalAlignment(Alignment))
927 B.addAlignmentAttr(Alignment);
930 case lltok::kw_alignstack: {
934 if (ParseToken(lltok::equal, "expected '=' here") ||
935 ParseUInt32(Alignment))
938 if (ParseOptionalStackAlignment(Alignment))
941 B.addStackAlignmentAttr(Alignment);
944 case lltok::kw_alwaysinline: B.addAttribute(Attribute::AlwaysInline); break;
945 case lltok::kw_builtin: B.addAttribute(Attribute::Builtin); break;
946 case lltok::kw_cold: B.addAttribute(Attribute::Cold); break;
947 case lltok::kw_inlinehint: B.addAttribute(Attribute::InlineHint); break;
948 case lltok::kw_jumptable: B.addAttribute(Attribute::JumpTable); break;
949 case lltok::kw_minsize: B.addAttribute(Attribute::MinSize); break;
950 case lltok::kw_naked: B.addAttribute(Attribute::Naked); break;
951 case lltok::kw_nobuiltin: B.addAttribute(Attribute::NoBuiltin); break;
952 case lltok::kw_noduplicate: B.addAttribute(Attribute::NoDuplicate); break;
953 case lltok::kw_noimplicitfloat: B.addAttribute(Attribute::NoImplicitFloat); break;
954 case lltok::kw_noinline: B.addAttribute(Attribute::NoInline); break;
955 case lltok::kw_nonlazybind: B.addAttribute(Attribute::NonLazyBind); break;
956 case lltok::kw_noredzone: B.addAttribute(Attribute::NoRedZone); break;
957 case lltok::kw_noreturn: B.addAttribute(Attribute::NoReturn); break;
958 case lltok::kw_nounwind: B.addAttribute(Attribute::NoUnwind); break;
959 case lltok::kw_optnone: B.addAttribute(Attribute::OptimizeNone); break;
960 case lltok::kw_optsize: B.addAttribute(Attribute::OptimizeForSize); break;
961 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
962 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
963 case lltok::kw_returns_twice: B.addAttribute(Attribute::ReturnsTwice); break;
964 case lltok::kw_ssp: B.addAttribute(Attribute::StackProtect); break;
965 case lltok::kw_sspreq: B.addAttribute(Attribute::StackProtectReq); break;
966 case lltok::kw_sspstrong: B.addAttribute(Attribute::StackProtectStrong); break;
967 case lltok::kw_sanitize_address: B.addAttribute(Attribute::SanitizeAddress); break;
968 case lltok::kw_sanitize_thread: B.addAttribute(Attribute::SanitizeThread); break;
969 case lltok::kw_sanitize_memory: B.addAttribute(Attribute::SanitizeMemory); break;
970 case lltok::kw_uwtable: B.addAttribute(Attribute::UWTable); break;
973 case lltok::kw_inreg:
974 case lltok::kw_signext:
975 case lltok::kw_zeroext:
978 "invalid use of attribute on a function");
980 case lltok::kw_byval:
981 case lltok::kw_dereferenceable:
982 case lltok::kw_inalloca:
984 case lltok::kw_noalias:
985 case lltok::kw_nocapture:
986 case lltok::kw_nonnull:
987 case lltok::kw_returned:
991 "invalid use of parameter-only attribute on a function");
999 //===----------------------------------------------------------------------===//
1000 // GlobalValue Reference/Resolution Routines.
1001 //===----------------------------------------------------------------------===//
1003 /// GetGlobalVal - Get a value with the specified name or ID, creating a
1004 /// forward reference record if needed. This can return null if the value
1005 /// exists but does not have the right type.
1006 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
1008 PointerType *PTy = dyn_cast<PointerType>(Ty);
1010 Error(Loc, "global variable reference must have pointer type");
1014 // Look this name up in the normal function symbol table.
1016 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
1018 // If this is a forward reference for the value, see if we already created a
1019 // forward ref record.
1021 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
1022 I = ForwardRefVals.find(Name);
1023 if (I != ForwardRefVals.end())
1024 Val = I->second.first;
1027 // If we have the value in the symbol table or fwd-ref table, return it.
1029 if (Val->getType() == Ty) return Val;
1030 Error(Loc, "'@" + Name + "' defined with type '" +
1031 getTypeString(Val->getType()) + "'");
1035 // Otherwise, create a new forward reference for this value and remember it.
1036 GlobalValue *FwdVal;
1037 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1038 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
1040 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1041 GlobalValue::ExternalWeakLinkage, nullptr, Name,
1042 nullptr, GlobalVariable::NotThreadLocal,
1043 PTy->getAddressSpace());
1045 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1049 GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
1050 PointerType *PTy = dyn_cast<PointerType>(Ty);
1052 Error(Loc, "global variable reference must have pointer type");
1056 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
1058 // If this is a forward reference for the value, see if we already created a
1059 // forward ref record.
1061 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
1062 I = ForwardRefValIDs.find(ID);
1063 if (I != ForwardRefValIDs.end())
1064 Val = I->second.first;
1067 // If we have the value in the symbol table or fwd-ref table, return it.
1069 if (Val->getType() == Ty) return Val;
1070 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
1071 getTypeString(Val->getType()) + "'");
1075 // Otherwise, create a new forward reference for this value and remember it.
1076 GlobalValue *FwdVal;
1077 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1078 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
1080 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1081 GlobalValue::ExternalWeakLinkage, nullptr, "");
1083 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1088 //===----------------------------------------------------------------------===//
1089 // Comdat Reference/Resolution Routines.
1090 //===----------------------------------------------------------------------===//
1092 Comdat *LLParser::getComdat(const std::string &Name, LocTy Loc) {
1093 // Look this name up in the comdat symbol table.
1094 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
1095 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
1096 if (I != ComdatSymTab.end())
1099 // Otherwise, create a new forward reference for this value and remember it.
1100 Comdat *C = M->getOrInsertComdat(Name);
1101 ForwardRefComdats[Name] = Loc;
1106 //===----------------------------------------------------------------------===//
1108 //===----------------------------------------------------------------------===//
1110 /// ParseToken - If the current token has the specified kind, eat it and return
1111 /// success. Otherwise, emit the specified error and return failure.
1112 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
1113 if (Lex.getKind() != T)
1114 return TokError(ErrMsg);
1119 /// ParseStringConstant
1120 /// ::= StringConstant
1121 bool LLParser::ParseStringConstant(std::string &Result) {
1122 if (Lex.getKind() != lltok::StringConstant)
1123 return TokError("expected string constant");
1124 Result = Lex.getStrVal();
1131 bool LLParser::ParseUInt32(unsigned &Val) {
1132 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1133 return TokError("expected integer");
1134 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
1135 if (Val64 != unsigned(Val64))
1136 return TokError("expected 32-bit integer (too large)");
1144 bool LLParser::ParseUInt64(uint64_t &Val) {
1145 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1146 return TokError("expected integer");
1147 Val = Lex.getAPSIntVal().getLimitedValue();
1153 /// := 'localdynamic'
1154 /// := 'initialexec'
1156 bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
1157 switch (Lex.getKind()) {
1159 return TokError("expected localdynamic, initialexec or localexec");
1160 case lltok::kw_localdynamic:
1161 TLM = GlobalVariable::LocalDynamicTLSModel;
1163 case lltok::kw_initialexec:
1164 TLM = GlobalVariable::InitialExecTLSModel;
1166 case lltok::kw_localexec:
1167 TLM = GlobalVariable::LocalExecTLSModel;
1175 /// ParseOptionalThreadLocal
1177 /// := 'thread_local'
1178 /// := 'thread_local' '(' tlsmodel ')'
1179 bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
1180 TLM = GlobalVariable::NotThreadLocal;
1181 if (!EatIfPresent(lltok::kw_thread_local))
1184 TLM = GlobalVariable::GeneralDynamicTLSModel;
1185 if (Lex.getKind() == lltok::lparen) {
1187 return ParseTLSModel(TLM) ||
1188 ParseToken(lltok::rparen, "expected ')' after thread local model");
1193 /// ParseOptionalAddrSpace
1195 /// := 'addrspace' '(' uint32 ')'
1196 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
1198 if (!EatIfPresent(lltok::kw_addrspace))
1200 return ParseToken(lltok::lparen, "expected '(' in address space") ||
1201 ParseUInt32(AddrSpace) ||
1202 ParseToken(lltok::rparen, "expected ')' in address space");
1205 /// ParseOptionalParamAttrs - Parse a potentially empty list of parameter attributes.
1206 bool LLParser::ParseOptionalParamAttrs(AttrBuilder &B) {
1207 bool HaveError = false;
1212 lltok::Kind Token = Lex.getKind();
1214 default: // End of attributes.
1216 case lltok::kw_align: {
1218 if (ParseOptionalAlignment(Alignment))
1220 B.addAlignmentAttr(Alignment);
1223 case lltok::kw_byval: B.addAttribute(Attribute::ByVal); break;
1224 case lltok::kw_dereferenceable: {
1226 if (ParseOptionalDereferenceableBytes(Bytes))
1228 B.addDereferenceableAttr(Bytes);
1231 case lltok::kw_inalloca: B.addAttribute(Attribute::InAlloca); break;
1232 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1233 case lltok::kw_nest: B.addAttribute(Attribute::Nest); break;
1234 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1235 case lltok::kw_nocapture: B.addAttribute(Attribute::NoCapture); break;
1236 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1237 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1238 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1239 case lltok::kw_returned: B.addAttribute(Attribute::Returned); break;
1240 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1241 case lltok::kw_sret: B.addAttribute(Attribute::StructRet); break;
1242 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1244 case lltok::kw_alignstack:
1245 case lltok::kw_alwaysinline:
1246 case lltok::kw_builtin:
1247 case lltok::kw_inlinehint:
1248 case lltok::kw_jumptable:
1249 case lltok::kw_minsize:
1250 case lltok::kw_naked:
1251 case lltok::kw_nobuiltin:
1252 case lltok::kw_noduplicate:
1253 case lltok::kw_noimplicitfloat:
1254 case lltok::kw_noinline:
1255 case lltok::kw_nonlazybind:
1256 case lltok::kw_noredzone:
1257 case lltok::kw_noreturn:
1258 case lltok::kw_nounwind:
1259 case lltok::kw_optnone:
1260 case lltok::kw_optsize:
1261 case lltok::kw_returns_twice:
1262 case lltok::kw_sanitize_address:
1263 case lltok::kw_sanitize_memory:
1264 case lltok::kw_sanitize_thread:
1266 case lltok::kw_sspreq:
1267 case lltok::kw_sspstrong:
1268 case lltok::kw_uwtable:
1269 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1277 /// ParseOptionalReturnAttrs - Parse a potentially empty list of return attributes.
1278 bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
1279 bool HaveError = false;
1284 lltok::Kind Token = Lex.getKind();
1286 default: // End of attributes.
1288 case lltok::kw_dereferenceable: {
1290 if (ParseOptionalDereferenceableBytes(Bytes))
1292 B.addDereferenceableAttr(Bytes);
1295 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1296 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1297 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1298 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1299 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1302 case lltok::kw_align:
1303 case lltok::kw_byval:
1304 case lltok::kw_inalloca:
1305 case lltok::kw_nest:
1306 case lltok::kw_nocapture:
1307 case lltok::kw_returned:
1308 case lltok::kw_sret:
1309 HaveError |= Error(Lex.getLoc(), "invalid use of parameter-only attribute");
1312 case lltok::kw_alignstack:
1313 case lltok::kw_alwaysinline:
1314 case lltok::kw_builtin:
1315 case lltok::kw_cold:
1316 case lltok::kw_inlinehint:
1317 case lltok::kw_jumptable:
1318 case lltok::kw_minsize:
1319 case lltok::kw_naked:
1320 case lltok::kw_nobuiltin:
1321 case lltok::kw_noduplicate:
1322 case lltok::kw_noimplicitfloat:
1323 case lltok::kw_noinline:
1324 case lltok::kw_nonlazybind:
1325 case lltok::kw_noredzone:
1326 case lltok::kw_noreturn:
1327 case lltok::kw_nounwind:
1328 case lltok::kw_optnone:
1329 case lltok::kw_optsize:
1330 case lltok::kw_returns_twice:
1331 case lltok::kw_sanitize_address:
1332 case lltok::kw_sanitize_memory:
1333 case lltok::kw_sanitize_thread:
1335 case lltok::kw_sspreq:
1336 case lltok::kw_sspstrong:
1337 case lltok::kw_uwtable:
1338 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1341 case lltok::kw_readnone:
1342 case lltok::kw_readonly:
1343 HaveError |= Error(Lex.getLoc(), "invalid use of attribute on return type");
1350 /// ParseOptionalLinkage
1357 /// ::= 'linkonce_odr'
1358 /// ::= 'available_externally'
1361 /// ::= 'extern_weak'
1363 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1365 switch (Lex.getKind()) {
1366 default: Res=GlobalValue::ExternalLinkage; return false;
1367 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1368 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1369 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1370 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1371 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1372 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1373 case lltok::kw_available_externally:
1374 Res = GlobalValue::AvailableExternallyLinkage;
1376 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1377 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1378 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1379 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1386 /// ParseOptionalVisibility
1392 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1393 switch (Lex.getKind()) {
1394 default: Res = GlobalValue::DefaultVisibility; return false;
1395 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1396 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1397 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1403 /// ParseOptionalDLLStorageClass
1408 bool LLParser::ParseOptionalDLLStorageClass(unsigned &Res) {
1409 switch (Lex.getKind()) {
1410 default: Res = GlobalValue::DefaultStorageClass; return false;
1411 case lltok::kw_dllimport: Res = GlobalValue::DLLImportStorageClass; break;
1412 case lltok::kw_dllexport: Res = GlobalValue::DLLExportStorageClass; break;
1418 /// ParseOptionalCallingConv
1422 /// ::= 'intel_ocl_bicc'
1424 /// ::= 'x86_stdcallcc'
1425 /// ::= 'x86_fastcallcc'
1426 /// ::= 'x86_thiscallcc'
1427 /// ::= 'x86_vectorcallcc'
1428 /// ::= 'arm_apcscc'
1429 /// ::= 'arm_aapcscc'
1430 /// ::= 'arm_aapcs_vfpcc'
1431 /// ::= 'msp430_intrcc'
1432 /// ::= 'ptx_kernel'
1433 /// ::= 'ptx_device'
1435 /// ::= 'spir_kernel'
1436 /// ::= 'x86_64_sysvcc'
1437 /// ::= 'x86_64_win64cc'
1438 /// ::= 'webkit_jscc'
1440 /// ::= 'preserve_mostcc'
1441 /// ::= 'preserve_allcc'
1445 bool LLParser::ParseOptionalCallingConv(unsigned &CC) {
1446 switch (Lex.getKind()) {
1447 default: CC = CallingConv::C; return false;
1448 case lltok::kw_ccc: CC = CallingConv::C; break;
1449 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1450 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1451 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1452 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1453 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1454 case lltok::kw_x86_vectorcallcc:CC = CallingConv::X86_VectorCall; break;
1455 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1456 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1457 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1458 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1459 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1460 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1461 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1462 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1463 case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1464 case lltok::kw_x86_64_sysvcc: CC = CallingConv::X86_64_SysV; break;
1465 case lltok::kw_x86_64_win64cc: CC = CallingConv::X86_64_Win64; break;
1466 case lltok::kw_webkit_jscc: CC = CallingConv::WebKit_JS; break;
1467 case lltok::kw_anyregcc: CC = CallingConv::AnyReg; break;
1468 case lltok::kw_preserve_mostcc:CC = CallingConv::PreserveMost; break;
1469 case lltok::kw_preserve_allcc: CC = CallingConv::PreserveAll; break;
1470 case lltok::kw_ghccc: CC = CallingConv::GHC; break;
1471 case lltok::kw_cc: {
1473 return ParseUInt32(CC);
1481 /// ParseInstructionMetadata
1482 /// ::= !dbg !42 (',' !dbg !57)*
1483 bool LLParser::ParseInstructionMetadata(Instruction *Inst,
1484 PerFunctionState *PFS) {
1486 if (Lex.getKind() != lltok::MetadataVar)
1487 return TokError("expected metadata after comma");
1489 std::string Name = Lex.getStrVal();
1490 unsigned MDK = M->getMDKindID(Name);
1497 Inst->setMetadata(MDK, N);
1498 if (MDK == LLVMContext::MD_tbaa)
1499 InstsWithTBAATag.push_back(Inst);
1501 // If this is the end of the list, we're done.
1502 } while (EatIfPresent(lltok::comma));
1506 /// ParseOptionalAlignment
1509 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1511 if (!EatIfPresent(lltok::kw_align))
1513 LocTy AlignLoc = Lex.getLoc();
1514 if (ParseUInt32(Alignment)) return true;
1515 if (!isPowerOf2_32(Alignment))
1516 return Error(AlignLoc, "alignment is not a power of two");
1517 if (Alignment > Value::MaximumAlignment)
1518 return Error(AlignLoc, "huge alignments are not supported yet");
1522 /// ParseOptionalDereferenceableBytes
1524 /// ::= 'dereferenceable' '(' 4 ')'
1525 bool LLParser::ParseOptionalDereferenceableBytes(uint64_t &Bytes) {
1527 if (!EatIfPresent(lltok::kw_dereferenceable))
1529 LocTy ParenLoc = Lex.getLoc();
1530 if (!EatIfPresent(lltok::lparen))
1531 return Error(ParenLoc, "expected '('");
1532 LocTy DerefLoc = Lex.getLoc();
1533 if (ParseUInt64(Bytes)) return true;
1534 ParenLoc = Lex.getLoc();
1535 if (!EatIfPresent(lltok::rparen))
1536 return Error(ParenLoc, "expected ')'");
1538 return Error(DerefLoc, "dereferenceable bytes must be non-zero");
1542 /// ParseOptionalCommaAlign
1546 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1548 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1549 bool &AteExtraComma) {
1550 AteExtraComma = false;
1551 while (EatIfPresent(lltok::comma)) {
1552 // Metadata at the end is an early exit.
1553 if (Lex.getKind() == lltok::MetadataVar) {
1554 AteExtraComma = true;
1558 if (Lex.getKind() != lltok::kw_align)
1559 return Error(Lex.getLoc(), "expected metadata or 'align'");
1561 if (ParseOptionalAlignment(Alignment)) return true;
1567 /// ParseScopeAndOrdering
1568 /// if isAtomic: ::= 'singlethread'? AtomicOrdering
1571 /// This sets Scope and Ordering to the parsed values.
1572 bool LLParser::ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope,
1573 AtomicOrdering &Ordering) {
1577 Scope = CrossThread;
1578 if (EatIfPresent(lltok::kw_singlethread))
1579 Scope = SingleThread;
1581 return ParseOrdering(Ordering);
1585 /// ::= AtomicOrdering
1587 /// This sets Ordering to the parsed value.
1588 bool LLParser::ParseOrdering(AtomicOrdering &Ordering) {
1589 switch (Lex.getKind()) {
1590 default: return TokError("Expected ordering on atomic instruction");
1591 case lltok::kw_unordered: Ordering = Unordered; break;
1592 case lltok::kw_monotonic: Ordering = Monotonic; break;
1593 case lltok::kw_acquire: Ordering = Acquire; break;
1594 case lltok::kw_release: Ordering = Release; break;
1595 case lltok::kw_acq_rel: Ordering = AcquireRelease; break;
1596 case lltok::kw_seq_cst: Ordering = SequentiallyConsistent; break;
1602 /// ParseOptionalStackAlignment
1604 /// ::= 'alignstack' '(' 4 ')'
1605 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1607 if (!EatIfPresent(lltok::kw_alignstack))
1609 LocTy ParenLoc = Lex.getLoc();
1610 if (!EatIfPresent(lltok::lparen))
1611 return Error(ParenLoc, "expected '('");
1612 LocTy AlignLoc = Lex.getLoc();
1613 if (ParseUInt32(Alignment)) return true;
1614 ParenLoc = Lex.getLoc();
1615 if (!EatIfPresent(lltok::rparen))
1616 return Error(ParenLoc, "expected ')'");
1617 if (!isPowerOf2_32(Alignment))
1618 return Error(AlignLoc, "stack alignment is not a power of two");
1622 /// ParseIndexList - This parses the index list for an insert/extractvalue
1623 /// instruction. This sets AteExtraComma in the case where we eat an extra
1624 /// comma at the end of the line and find that it is followed by metadata.
1625 /// Clients that don't allow metadata can call the version of this function that
1626 /// only takes one argument.
1629 /// ::= (',' uint32)+
1631 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1632 bool &AteExtraComma) {
1633 AteExtraComma = false;
1635 if (Lex.getKind() != lltok::comma)
1636 return TokError("expected ',' as start of index list");
1638 while (EatIfPresent(lltok::comma)) {
1639 if (Lex.getKind() == lltok::MetadataVar) {
1640 AteExtraComma = true;
1644 if (ParseUInt32(Idx)) return true;
1645 Indices.push_back(Idx);
1651 //===----------------------------------------------------------------------===//
1653 //===----------------------------------------------------------------------===//
1655 /// ParseType - Parse a type.
1656 bool LLParser::ParseType(Type *&Result, const Twine &Msg, bool AllowVoid) {
1657 SMLoc TypeLoc = Lex.getLoc();
1658 switch (Lex.getKind()) {
1660 return TokError(Msg);
1662 // Type ::= 'float' | 'void' (etc)
1663 Result = Lex.getTyVal();
1667 // Type ::= StructType
1668 if (ParseAnonStructType(Result, false))
1671 case lltok::lsquare:
1672 // Type ::= '[' ... ']'
1673 Lex.Lex(); // eat the lsquare.
1674 if (ParseArrayVectorType(Result, false))
1677 case lltok::less: // Either vector or packed struct.
1678 // Type ::= '<' ... '>'
1680 if (Lex.getKind() == lltok::lbrace) {
1681 if (ParseAnonStructType(Result, true) ||
1682 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1684 } else if (ParseArrayVectorType(Result, true))
1687 case lltok::LocalVar: {
1689 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
1691 // If the type hasn't been defined yet, create a forward definition and
1692 // remember where that forward def'n was seen (in case it never is defined).
1694 Entry.first = StructType::create(Context, Lex.getStrVal());
1695 Entry.second = Lex.getLoc();
1697 Result = Entry.first;
1702 case lltok::LocalVarID: {
1704 if (Lex.getUIntVal() >= NumberedTypes.size())
1705 NumberedTypes.resize(Lex.getUIntVal()+1);
1706 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
1708 // If the type hasn't been defined yet, create a forward definition and
1709 // remember where that forward def'n was seen (in case it never is defined).
1711 Entry.first = StructType::create(Context);
1712 Entry.second = Lex.getLoc();
1714 Result = Entry.first;
1720 // Parse the type suffixes.
1722 switch (Lex.getKind()) {
1725 if (!AllowVoid && Result->isVoidTy())
1726 return Error(TypeLoc, "void type only allowed for function results");
1729 // Type ::= Type '*'
1731 if (Result->isLabelTy())
1732 return TokError("basic block pointers are invalid");
1733 if (Result->isVoidTy())
1734 return TokError("pointers to void are invalid - use i8* instead");
1735 if (!PointerType::isValidElementType(Result))
1736 return TokError("pointer to this type is invalid");
1737 Result = PointerType::getUnqual(Result);
1741 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
1742 case lltok::kw_addrspace: {
1743 if (Result->isLabelTy())
1744 return TokError("basic block pointers are invalid");
1745 if (Result->isVoidTy())
1746 return TokError("pointers to void are invalid; use i8* instead");
1747 if (!PointerType::isValidElementType(Result))
1748 return TokError("pointer to this type is invalid");
1750 if (ParseOptionalAddrSpace(AddrSpace) ||
1751 ParseToken(lltok::star, "expected '*' in address space"))
1754 Result = PointerType::get(Result, AddrSpace);
1758 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1760 if (ParseFunctionType(Result))
1767 /// ParseParameterList
1769 /// ::= '(' Arg (',' Arg)* ')'
1771 /// ::= Type OptionalAttributes Value OptionalAttributes
1772 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1773 PerFunctionState &PFS, bool IsMustTailCall,
1774 bool InVarArgsFunc) {
1775 if (ParseToken(lltok::lparen, "expected '(' in call"))
1778 unsigned AttrIndex = 1;
1779 while (Lex.getKind() != lltok::rparen) {
1780 // If this isn't the first argument, we need a comma.
1781 if (!ArgList.empty() &&
1782 ParseToken(lltok::comma, "expected ',' in argument list"))
1785 // Parse an ellipsis if this is a musttail call in a variadic function.
1786 if (Lex.getKind() == lltok::dotdotdot) {
1787 const char *Msg = "unexpected ellipsis in argument list for ";
1788 if (!IsMustTailCall)
1789 return TokError(Twine(Msg) + "non-musttail call");
1791 return TokError(Twine(Msg) + "musttail call in non-varargs function");
1792 Lex.Lex(); // Lex the '...', it is purely for readability.
1793 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1796 // Parse the argument.
1798 Type *ArgTy = nullptr;
1799 AttrBuilder ArgAttrs;
1801 if (ParseType(ArgTy, ArgLoc))
1804 if (ArgTy->isMetadataTy()) {
1805 if (ParseMetadataAsValue(V, PFS))
1808 // Otherwise, handle normal operands.
1809 if (ParseOptionalParamAttrs(ArgAttrs) || ParseValue(ArgTy, V, PFS))
1812 ArgList.push_back(ParamInfo(ArgLoc, V, AttributeSet::get(V->getContext(),
1817 if (IsMustTailCall && InVarArgsFunc)
1818 return TokError("expected '...' at end of argument list for musttail call "
1819 "in varargs function");
1821 Lex.Lex(); // Lex the ')'.
1827 /// ParseArgumentList - Parse the argument list for a function type or function
1829 /// ::= '(' ArgTypeListI ')'
1833 /// ::= ArgTypeList ',' '...'
1834 /// ::= ArgType (',' ArgType)*
1836 bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
1839 assert(Lex.getKind() == lltok::lparen);
1840 Lex.Lex(); // eat the (.
1842 if (Lex.getKind() == lltok::rparen) {
1844 } else if (Lex.getKind() == lltok::dotdotdot) {
1848 LocTy TypeLoc = Lex.getLoc();
1849 Type *ArgTy = nullptr;
1853 if (ParseType(ArgTy) ||
1854 ParseOptionalParamAttrs(Attrs)) return true;
1856 if (ArgTy->isVoidTy())
1857 return Error(TypeLoc, "argument can not have void type");
1859 if (Lex.getKind() == lltok::LocalVar) {
1860 Name = Lex.getStrVal();
1864 if (!FunctionType::isValidArgumentType(ArgTy))
1865 return Error(TypeLoc, "invalid type for function argument");
1867 unsigned AttrIndex = 1;
1868 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1869 AttributeSet::get(ArgTy->getContext(),
1870 AttrIndex++, Attrs), Name));
1872 while (EatIfPresent(lltok::comma)) {
1873 // Handle ... at end of arg list.
1874 if (EatIfPresent(lltok::dotdotdot)) {
1879 // Otherwise must be an argument type.
1880 TypeLoc = Lex.getLoc();
1881 if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
1883 if (ArgTy->isVoidTy())
1884 return Error(TypeLoc, "argument can not have void type");
1886 if (Lex.getKind() == lltok::LocalVar) {
1887 Name = Lex.getStrVal();
1893 if (!ArgTy->isFirstClassType())
1894 return Error(TypeLoc, "invalid type for function argument");
1896 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1897 AttributeSet::get(ArgTy->getContext(),
1898 AttrIndex++, Attrs),
1903 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1906 /// ParseFunctionType
1907 /// ::= Type ArgumentList OptionalAttrs
1908 bool LLParser::ParseFunctionType(Type *&Result) {
1909 assert(Lex.getKind() == lltok::lparen);
1911 if (!FunctionType::isValidReturnType(Result))
1912 return TokError("invalid function return type");
1914 SmallVector<ArgInfo, 8> ArgList;
1916 if (ParseArgumentList(ArgList, isVarArg))
1919 // Reject names on the arguments lists.
1920 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1921 if (!ArgList[i].Name.empty())
1922 return Error(ArgList[i].Loc, "argument name invalid in function type");
1923 if (ArgList[i].Attrs.hasAttributes(i + 1))
1924 return Error(ArgList[i].Loc,
1925 "argument attributes invalid in function type");
1928 SmallVector<Type*, 16> ArgListTy;
1929 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1930 ArgListTy.push_back(ArgList[i].Ty);
1932 Result = FunctionType::get(Result, ArgListTy, isVarArg);
1936 /// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
1938 bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
1939 SmallVector<Type*, 8> Elts;
1940 if (ParseStructBody(Elts)) return true;
1942 Result = StructType::get(Context, Elts, Packed);
1946 /// ParseStructDefinition - Parse a struct in a 'type' definition.
1947 bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
1948 std::pair<Type*, LocTy> &Entry,
1950 // If the type was already defined, diagnose the redefinition.
1951 if (Entry.first && !Entry.second.isValid())
1952 return Error(TypeLoc, "redefinition of type");
1954 // If we have opaque, just return without filling in the definition for the
1955 // struct. This counts as a definition as far as the .ll file goes.
1956 if (EatIfPresent(lltok::kw_opaque)) {
1957 // This type is being defined, so clear the location to indicate this.
1958 Entry.second = SMLoc();
1960 // If this type number has never been uttered, create it.
1962 Entry.first = StructType::create(Context, Name);
1963 ResultTy = Entry.first;
1967 // If the type starts with '<', then it is either a packed struct or a vector.
1968 bool isPacked = EatIfPresent(lltok::less);
1970 // If we don't have a struct, then we have a random type alias, which we
1971 // accept for compatibility with old files. These types are not allowed to be
1972 // forward referenced and not allowed to be recursive.
1973 if (Lex.getKind() != lltok::lbrace) {
1975 return Error(TypeLoc, "forward references to non-struct type");
1979 return ParseArrayVectorType(ResultTy, true);
1980 return ParseType(ResultTy);
1983 // This type is being defined, so clear the location to indicate this.
1984 Entry.second = SMLoc();
1986 // If this type number has never been uttered, create it.
1988 Entry.first = StructType::create(Context, Name);
1990 StructType *STy = cast<StructType>(Entry.first);
1992 SmallVector<Type*, 8> Body;
1993 if (ParseStructBody(Body) ||
1994 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
1997 STy->setBody(Body, isPacked);
2003 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
2006 /// ::= '{' Type (',' Type)* '}'
2007 /// ::= '<' '{' '}' '>'
2008 /// ::= '<' '{' Type (',' Type)* '}' '>'
2009 bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
2010 assert(Lex.getKind() == lltok::lbrace);
2011 Lex.Lex(); // Consume the '{'
2013 // Handle the empty struct.
2014 if (EatIfPresent(lltok::rbrace))
2017 LocTy EltTyLoc = Lex.getLoc();
2019 if (ParseType(Ty)) return true;
2022 if (!StructType::isValidElementType(Ty))
2023 return Error(EltTyLoc, "invalid element type for struct");
2025 while (EatIfPresent(lltok::comma)) {
2026 EltTyLoc = Lex.getLoc();
2027 if (ParseType(Ty)) return true;
2029 if (!StructType::isValidElementType(Ty))
2030 return Error(EltTyLoc, "invalid element type for struct");
2035 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
2038 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
2039 /// token has already been consumed.
2041 /// ::= '[' APSINTVAL 'x' Types ']'
2042 /// ::= '<' APSINTVAL 'x' Types '>'
2043 bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
2044 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
2045 Lex.getAPSIntVal().getBitWidth() > 64)
2046 return TokError("expected number in address space");
2048 LocTy SizeLoc = Lex.getLoc();
2049 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
2052 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
2055 LocTy TypeLoc = Lex.getLoc();
2056 Type *EltTy = nullptr;
2057 if (ParseType(EltTy)) return true;
2059 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
2060 "expected end of sequential type"))
2065 return Error(SizeLoc, "zero element vector is illegal");
2066 if ((unsigned)Size != Size)
2067 return Error(SizeLoc, "size too large for vector");
2068 if (!VectorType::isValidElementType(EltTy))
2069 return Error(TypeLoc, "invalid vector element type");
2070 Result = VectorType::get(EltTy, unsigned(Size));
2072 if (!ArrayType::isValidElementType(EltTy))
2073 return Error(TypeLoc, "invalid array element type");
2074 Result = ArrayType::get(EltTy, Size);
2079 //===----------------------------------------------------------------------===//
2080 // Function Semantic Analysis.
2081 //===----------------------------------------------------------------------===//
2083 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
2085 : P(p), F(f), FunctionNumber(functionNumber) {
2087 // Insert unnamed arguments into the NumberedVals list.
2088 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
2091 NumberedVals.push_back(AI);
2094 LLParser::PerFunctionState::~PerFunctionState() {
2095 // If there were any forward referenced non-basicblock values, delete them.
2096 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
2097 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
2098 if (!isa<BasicBlock>(I->second.first)) {
2099 I->second.first->replaceAllUsesWith(
2100 UndefValue::get(I->second.first->getType()));
2101 delete I->second.first;
2102 I->second.first = nullptr;
2105 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2106 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
2107 if (!isa<BasicBlock>(I->second.first)) {
2108 I->second.first->replaceAllUsesWith(
2109 UndefValue::get(I->second.first->getType()));
2110 delete I->second.first;
2111 I->second.first = nullptr;
2115 bool LLParser::PerFunctionState::FinishFunction() {
2116 if (!ForwardRefVals.empty())
2117 return P.Error(ForwardRefVals.begin()->second.second,
2118 "use of undefined value '%" + ForwardRefVals.begin()->first +
2120 if (!ForwardRefValIDs.empty())
2121 return P.Error(ForwardRefValIDs.begin()->second.second,
2122 "use of undefined value '%" +
2123 Twine(ForwardRefValIDs.begin()->first) + "'");
2128 /// GetVal - Get a value with the specified name or ID, creating a
2129 /// forward reference record if needed. This can return null if the value
2130 /// exists but does not have the right type.
2131 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
2132 Type *Ty, LocTy Loc) {
2133 // Look this name up in the normal function symbol table.
2134 Value *Val = F.getValueSymbolTable().lookup(Name);
2136 // If this is a forward reference for the value, see if we already created a
2137 // forward ref record.
2139 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2140 I = ForwardRefVals.find(Name);
2141 if (I != ForwardRefVals.end())
2142 Val = I->second.first;
2145 // If we have the value in the symbol table or fwd-ref table, return it.
2147 if (Val->getType() == Ty) return Val;
2148 if (Ty->isLabelTy())
2149 P.Error(Loc, "'%" + Name + "' is not a basic block");
2151 P.Error(Loc, "'%" + Name + "' defined with type '" +
2152 getTypeString(Val->getType()) + "'");
2156 // Don't make placeholders with invalid type.
2157 if (!Ty->isFirstClassType()) {
2158 P.Error(Loc, "invalid use of a non-first-class type");
2162 // Otherwise, create a new forward reference for this value and remember it.
2164 if (Ty->isLabelTy())
2165 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2167 FwdVal = new Argument(Ty, Name);
2169 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2173 Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty,
2175 // Look this name up in the normal function symbol table.
2176 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
2178 // If this is a forward reference for the value, see if we already created a
2179 // forward ref record.
2181 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2182 I = ForwardRefValIDs.find(ID);
2183 if (I != ForwardRefValIDs.end())
2184 Val = I->second.first;
2187 // If we have the value in the symbol table or fwd-ref table, return it.
2189 if (Val->getType() == Ty) return Val;
2190 if (Ty->isLabelTy())
2191 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
2193 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
2194 getTypeString(Val->getType()) + "'");
2198 if (!Ty->isFirstClassType()) {
2199 P.Error(Loc, "invalid use of a non-first-class type");
2203 // Otherwise, create a new forward reference for this value and remember it.
2205 if (Ty->isLabelTy())
2206 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2208 FwdVal = new Argument(Ty);
2210 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2214 /// SetInstName - After an instruction is parsed and inserted into its
2215 /// basic block, this installs its name.
2216 bool LLParser::PerFunctionState::SetInstName(int NameID,
2217 const std::string &NameStr,
2218 LocTy NameLoc, Instruction *Inst) {
2219 // If this instruction has void type, it cannot have a name or ID specified.
2220 if (Inst->getType()->isVoidTy()) {
2221 if (NameID != -1 || !NameStr.empty())
2222 return P.Error(NameLoc, "instructions returning void cannot have a name");
2226 // If this was a numbered instruction, verify that the instruction is the
2227 // expected value and resolve any forward references.
2228 if (NameStr.empty()) {
2229 // If neither a name nor an ID was specified, just use the next ID.
2231 NameID = NumberedVals.size();
2233 if (unsigned(NameID) != NumberedVals.size())
2234 return P.Error(NameLoc, "instruction expected to be numbered '%" +
2235 Twine(NumberedVals.size()) + "'");
2237 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
2238 ForwardRefValIDs.find(NameID);
2239 if (FI != ForwardRefValIDs.end()) {
2240 if (FI->second.first->getType() != Inst->getType())
2241 return P.Error(NameLoc, "instruction forward referenced with type '" +
2242 getTypeString(FI->second.first->getType()) + "'");
2243 FI->second.first->replaceAllUsesWith(Inst);
2244 delete FI->second.first;
2245 ForwardRefValIDs.erase(FI);
2248 NumberedVals.push_back(Inst);
2252 // Otherwise, the instruction had a name. Resolve forward refs and set it.
2253 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2254 FI = ForwardRefVals.find(NameStr);
2255 if (FI != ForwardRefVals.end()) {
2256 if (FI->second.first->getType() != Inst->getType())
2257 return P.Error(NameLoc, "instruction forward referenced with type '" +
2258 getTypeString(FI->second.first->getType()) + "'");
2259 FI->second.first->replaceAllUsesWith(Inst);
2260 delete FI->second.first;
2261 ForwardRefVals.erase(FI);
2264 // Set the name on the instruction.
2265 Inst->setName(NameStr);
2267 if (Inst->getName() != NameStr)
2268 return P.Error(NameLoc, "multiple definition of local value named '" +
2273 /// GetBB - Get a basic block with the specified name or ID, creating a
2274 /// forward reference record if needed.
2275 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2277 return cast_or_null<BasicBlock>(GetVal(Name,
2278 Type::getLabelTy(F.getContext()), Loc));
2281 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2282 return cast_or_null<BasicBlock>(GetVal(ID,
2283 Type::getLabelTy(F.getContext()), Loc));
2286 /// DefineBB - Define the specified basic block, which is either named or
2287 /// unnamed. If there is an error, this returns null otherwise it returns
2288 /// the block being defined.
2289 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2293 BB = GetBB(NumberedVals.size(), Loc);
2295 BB = GetBB(Name, Loc);
2296 if (!BB) return nullptr; // Already diagnosed error.
2298 // Move the block to the end of the function. Forward ref'd blocks are
2299 // inserted wherever they happen to be referenced.
2300 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2302 // Remove the block from forward ref sets.
2304 ForwardRefValIDs.erase(NumberedVals.size());
2305 NumberedVals.push_back(BB);
2307 // BB forward references are already in the function symbol table.
2308 ForwardRefVals.erase(Name);
2314 //===----------------------------------------------------------------------===//
2316 //===----------------------------------------------------------------------===//
2318 /// ParseValID - Parse an abstract value that doesn't necessarily have a
2319 /// type implied. For example, if we parse "4" we don't know what integer type
2320 /// it has. The value will later be combined with its type and checked for
2321 /// sanity. PFS is used to convert function-local operands of metadata (since
2322 /// metadata operands are not just parsed here but also converted to values).
2323 /// PFS can be null when we are not parsing metadata values inside a function.
2324 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2325 ID.Loc = Lex.getLoc();
2326 switch (Lex.getKind()) {
2327 default: return TokError("expected value token");
2328 case lltok::GlobalID: // @42
2329 ID.UIntVal = Lex.getUIntVal();
2330 ID.Kind = ValID::t_GlobalID;
2332 case lltok::GlobalVar: // @foo
2333 ID.StrVal = Lex.getStrVal();
2334 ID.Kind = ValID::t_GlobalName;
2336 case lltok::LocalVarID: // %42
2337 ID.UIntVal = Lex.getUIntVal();
2338 ID.Kind = ValID::t_LocalID;
2340 case lltok::LocalVar: // %foo
2341 ID.StrVal = Lex.getStrVal();
2342 ID.Kind = ValID::t_LocalName;
2345 ID.APSIntVal = Lex.getAPSIntVal();
2346 ID.Kind = ValID::t_APSInt;
2348 case lltok::APFloat:
2349 ID.APFloatVal = Lex.getAPFloatVal();
2350 ID.Kind = ValID::t_APFloat;
2352 case lltok::kw_true:
2353 ID.ConstantVal = ConstantInt::getTrue(Context);
2354 ID.Kind = ValID::t_Constant;
2356 case lltok::kw_false:
2357 ID.ConstantVal = ConstantInt::getFalse(Context);
2358 ID.Kind = ValID::t_Constant;
2360 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2361 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2362 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2364 case lltok::lbrace: {
2365 // ValID ::= '{' ConstVector '}'
2367 SmallVector<Constant*, 16> Elts;
2368 if (ParseGlobalValueVector(Elts) ||
2369 ParseToken(lltok::rbrace, "expected end of struct constant"))
2372 ID.ConstantStructElts = new Constant*[Elts.size()];
2373 ID.UIntVal = Elts.size();
2374 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2375 ID.Kind = ValID::t_ConstantStruct;
2379 // ValID ::= '<' ConstVector '>' --> Vector.
2380 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2382 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2384 SmallVector<Constant*, 16> Elts;
2385 LocTy FirstEltLoc = Lex.getLoc();
2386 if (ParseGlobalValueVector(Elts) ||
2388 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2389 ParseToken(lltok::greater, "expected end of constant"))
2392 if (isPackedStruct) {
2393 ID.ConstantStructElts = new Constant*[Elts.size()];
2394 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2395 ID.UIntVal = Elts.size();
2396 ID.Kind = ValID::t_PackedConstantStruct;
2401 return Error(ID.Loc, "constant vector must not be empty");
2403 if (!Elts[0]->getType()->isIntegerTy() &&
2404 !Elts[0]->getType()->isFloatingPointTy() &&
2405 !Elts[0]->getType()->isPointerTy())
2406 return Error(FirstEltLoc,
2407 "vector elements must have integer, pointer or floating point type");
2409 // Verify that all the vector elements have the same type.
2410 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2411 if (Elts[i]->getType() != Elts[0]->getType())
2412 return Error(FirstEltLoc,
2413 "vector element #" + Twine(i) +
2414 " is not of type '" + getTypeString(Elts[0]->getType()));
2416 ID.ConstantVal = ConstantVector::get(Elts);
2417 ID.Kind = ValID::t_Constant;
2420 case lltok::lsquare: { // Array Constant
2422 SmallVector<Constant*, 16> Elts;
2423 LocTy FirstEltLoc = Lex.getLoc();
2424 if (ParseGlobalValueVector(Elts) ||
2425 ParseToken(lltok::rsquare, "expected end of array constant"))
2428 // Handle empty element.
2430 // Use undef instead of an array because it's inconvenient to determine
2431 // the element type at this point, there being no elements to examine.
2432 ID.Kind = ValID::t_EmptyArray;
2436 if (!Elts[0]->getType()->isFirstClassType())
2437 return Error(FirstEltLoc, "invalid array element type: " +
2438 getTypeString(Elts[0]->getType()));
2440 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2442 // Verify all elements are correct type!
2443 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2444 if (Elts[i]->getType() != Elts[0]->getType())
2445 return Error(FirstEltLoc,
2446 "array element #" + Twine(i) +
2447 " is not of type '" + getTypeString(Elts[0]->getType()));
2450 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2451 ID.Kind = ValID::t_Constant;
2454 case lltok::kw_c: // c "foo"
2456 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2458 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2459 ID.Kind = ValID::t_Constant;
2462 case lltok::kw_asm: {
2463 // ValID ::= 'asm' SideEffect? AlignStack? IntelDialect? STRINGCONSTANT ','
2465 bool HasSideEffect, AlignStack, AsmDialect;
2467 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2468 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2469 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2470 ParseStringConstant(ID.StrVal) ||
2471 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2472 ParseToken(lltok::StringConstant, "expected constraint string"))
2474 ID.StrVal2 = Lex.getStrVal();
2475 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2476 (unsigned(AsmDialect)<<2);
2477 ID.Kind = ValID::t_InlineAsm;
2481 case lltok::kw_blockaddress: {
2482 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2487 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2489 ParseToken(lltok::comma, "expected comma in block address expression")||
2490 ParseValID(Label) ||
2491 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2494 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2495 return Error(Fn.Loc, "expected function name in blockaddress");
2496 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2497 return Error(Label.Loc, "expected basic block name in blockaddress");
2499 // Try to find the function (but skip it if it's forward-referenced).
2500 GlobalValue *GV = nullptr;
2501 if (Fn.Kind == ValID::t_GlobalID) {
2502 if (Fn.UIntVal < NumberedVals.size())
2503 GV = NumberedVals[Fn.UIntVal];
2504 } else if (!ForwardRefVals.count(Fn.StrVal)) {
2505 GV = M->getNamedValue(Fn.StrVal);
2507 Function *F = nullptr;
2509 // Confirm that it's actually a function with a definition.
2510 if (!isa<Function>(GV))
2511 return Error(Fn.Loc, "expected function name in blockaddress");
2512 F = cast<Function>(GV);
2513 if (F->isDeclaration())
2514 return Error(Fn.Loc, "cannot take blockaddress inside a declaration");
2518 // Make a global variable as a placeholder for this reference.
2519 GlobalValue *&FwdRef = ForwardRefBlockAddresses[Fn][Label];
2521 FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context), false,
2522 GlobalValue::InternalLinkage, nullptr, "");
2523 ID.ConstantVal = FwdRef;
2524 ID.Kind = ValID::t_Constant;
2528 // We found the function; now find the basic block. Don't use PFS, since we
2529 // might be inside a constant expression.
2531 if (BlockAddressPFS && F == &BlockAddressPFS->getFunction()) {
2532 if (Label.Kind == ValID::t_LocalID)
2533 BB = BlockAddressPFS->GetBB(Label.UIntVal, Label.Loc);
2535 BB = BlockAddressPFS->GetBB(Label.StrVal, Label.Loc);
2537 return Error(Label.Loc, "referenced value is not a basic block");
2539 if (Label.Kind == ValID::t_LocalID)
2540 return Error(Label.Loc, "cannot take address of numeric label after "
2541 "the function is defined");
2542 BB = dyn_cast_or_null<BasicBlock>(
2543 F->getValueSymbolTable().lookup(Label.StrVal));
2545 return Error(Label.Loc, "referenced value is not a basic block");
2548 ID.ConstantVal = BlockAddress::get(F, BB);
2549 ID.Kind = ValID::t_Constant;
2553 case lltok::kw_trunc:
2554 case lltok::kw_zext:
2555 case lltok::kw_sext:
2556 case lltok::kw_fptrunc:
2557 case lltok::kw_fpext:
2558 case lltok::kw_bitcast:
2559 case lltok::kw_addrspacecast:
2560 case lltok::kw_uitofp:
2561 case lltok::kw_sitofp:
2562 case lltok::kw_fptoui:
2563 case lltok::kw_fptosi:
2564 case lltok::kw_inttoptr:
2565 case lltok::kw_ptrtoint: {
2566 unsigned Opc = Lex.getUIntVal();
2567 Type *DestTy = nullptr;
2570 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2571 ParseGlobalTypeAndValue(SrcVal) ||
2572 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2573 ParseType(DestTy) ||
2574 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2576 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2577 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2578 getTypeString(SrcVal->getType()) + "' to '" +
2579 getTypeString(DestTy) + "'");
2580 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2582 ID.Kind = ValID::t_Constant;
2585 case lltok::kw_extractvalue: {
2588 SmallVector<unsigned, 4> Indices;
2589 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2590 ParseGlobalTypeAndValue(Val) ||
2591 ParseIndexList(Indices) ||
2592 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2595 if (!Val->getType()->isAggregateType())
2596 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2597 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
2598 return Error(ID.Loc, "invalid indices for extractvalue");
2599 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
2600 ID.Kind = ValID::t_Constant;
2603 case lltok::kw_insertvalue: {
2605 Constant *Val0, *Val1;
2606 SmallVector<unsigned, 4> Indices;
2607 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2608 ParseGlobalTypeAndValue(Val0) ||
2609 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2610 ParseGlobalTypeAndValue(Val1) ||
2611 ParseIndexList(Indices) ||
2612 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2614 if (!Val0->getType()->isAggregateType())
2615 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2616 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
2617 return Error(ID.Loc, "invalid indices for insertvalue");
2618 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
2619 ID.Kind = ValID::t_Constant;
2622 case lltok::kw_icmp:
2623 case lltok::kw_fcmp: {
2624 unsigned PredVal, Opc = Lex.getUIntVal();
2625 Constant *Val0, *Val1;
2627 if (ParseCmpPredicate(PredVal, Opc) ||
2628 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2629 ParseGlobalTypeAndValue(Val0) ||
2630 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2631 ParseGlobalTypeAndValue(Val1) ||
2632 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2635 if (Val0->getType() != Val1->getType())
2636 return Error(ID.Loc, "compare operands must have the same type");
2638 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2640 if (Opc == Instruction::FCmp) {
2641 if (!Val0->getType()->isFPOrFPVectorTy())
2642 return Error(ID.Loc, "fcmp requires floating point operands");
2643 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2645 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2646 if (!Val0->getType()->isIntOrIntVectorTy() &&
2647 !Val0->getType()->getScalarType()->isPointerTy())
2648 return Error(ID.Loc, "icmp requires pointer or integer operands");
2649 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2651 ID.Kind = ValID::t_Constant;
2655 // Binary Operators.
2657 case lltok::kw_fadd:
2659 case lltok::kw_fsub:
2661 case lltok::kw_fmul:
2662 case lltok::kw_udiv:
2663 case lltok::kw_sdiv:
2664 case lltok::kw_fdiv:
2665 case lltok::kw_urem:
2666 case lltok::kw_srem:
2667 case lltok::kw_frem:
2669 case lltok::kw_lshr:
2670 case lltok::kw_ashr: {
2674 unsigned Opc = Lex.getUIntVal();
2675 Constant *Val0, *Val1;
2677 LocTy ModifierLoc = Lex.getLoc();
2678 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
2679 Opc == Instruction::Mul || Opc == Instruction::Shl) {
2680 if (EatIfPresent(lltok::kw_nuw))
2682 if (EatIfPresent(lltok::kw_nsw)) {
2684 if (EatIfPresent(lltok::kw_nuw))
2687 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
2688 Opc == Instruction::LShr || Opc == Instruction::AShr) {
2689 if (EatIfPresent(lltok::kw_exact))
2692 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2693 ParseGlobalTypeAndValue(Val0) ||
2694 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2695 ParseGlobalTypeAndValue(Val1) ||
2696 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2698 if (Val0->getType() != Val1->getType())
2699 return Error(ID.Loc, "operands of constexpr must have same type");
2700 if (!Val0->getType()->isIntOrIntVectorTy()) {
2702 return Error(ModifierLoc, "nuw only applies to integer operations");
2704 return Error(ModifierLoc, "nsw only applies to integer operations");
2706 // Check that the type is valid for the operator.
2708 case Instruction::Add:
2709 case Instruction::Sub:
2710 case Instruction::Mul:
2711 case Instruction::UDiv:
2712 case Instruction::SDiv:
2713 case Instruction::URem:
2714 case Instruction::SRem:
2715 case Instruction::Shl:
2716 case Instruction::AShr:
2717 case Instruction::LShr:
2718 if (!Val0->getType()->isIntOrIntVectorTy())
2719 return Error(ID.Loc, "constexpr requires integer operands");
2721 case Instruction::FAdd:
2722 case Instruction::FSub:
2723 case Instruction::FMul:
2724 case Instruction::FDiv:
2725 case Instruction::FRem:
2726 if (!Val0->getType()->isFPOrFPVectorTy())
2727 return Error(ID.Loc, "constexpr requires fp operands");
2729 default: llvm_unreachable("Unknown binary operator!");
2732 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2733 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2734 if (Exact) Flags |= PossiblyExactOperator::IsExact;
2735 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2737 ID.Kind = ValID::t_Constant;
2741 // Logical Operations
2744 case lltok::kw_xor: {
2745 unsigned Opc = Lex.getUIntVal();
2746 Constant *Val0, *Val1;
2748 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2749 ParseGlobalTypeAndValue(Val0) ||
2750 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2751 ParseGlobalTypeAndValue(Val1) ||
2752 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2754 if (Val0->getType() != Val1->getType())
2755 return Error(ID.Loc, "operands of constexpr must have same type");
2756 if (!Val0->getType()->isIntOrIntVectorTy())
2757 return Error(ID.Loc,
2758 "constexpr requires integer or integer vector operands");
2759 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2760 ID.Kind = ValID::t_Constant;
2764 case lltok::kw_getelementptr:
2765 case lltok::kw_shufflevector:
2766 case lltok::kw_insertelement:
2767 case lltok::kw_extractelement:
2768 case lltok::kw_select: {
2769 unsigned Opc = Lex.getUIntVal();
2770 SmallVector<Constant*, 16> Elts;
2771 bool InBounds = false;
2773 if (Opc == Instruction::GetElementPtr)
2774 InBounds = EatIfPresent(lltok::kw_inbounds);
2775 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2776 ParseGlobalValueVector(Elts) ||
2777 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2780 if (Opc == Instruction::GetElementPtr) {
2781 if (Elts.size() == 0 ||
2782 !Elts[0]->getType()->getScalarType()->isPointerTy())
2783 return Error(ID.Loc, "getelementptr requires pointer operand");
2785 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
2786 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(), Indices))
2787 return Error(ID.Loc, "invalid indices for getelementptr");
2788 ID.ConstantVal = ConstantExpr::getGetElementPtr(Elts[0], Indices,
2790 } else if (Opc == Instruction::Select) {
2791 if (Elts.size() != 3)
2792 return Error(ID.Loc, "expected three operands to select");
2793 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2795 return Error(ID.Loc, Reason);
2796 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2797 } else if (Opc == Instruction::ShuffleVector) {
2798 if (Elts.size() != 3)
2799 return Error(ID.Loc, "expected three operands to shufflevector");
2800 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2801 return Error(ID.Loc, "invalid operands to shufflevector");
2803 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2804 } else if (Opc == Instruction::ExtractElement) {
2805 if (Elts.size() != 2)
2806 return Error(ID.Loc, "expected two operands to extractelement");
2807 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2808 return Error(ID.Loc, "invalid extractelement operands");
2809 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2811 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2812 if (Elts.size() != 3)
2813 return Error(ID.Loc, "expected three operands to insertelement");
2814 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2815 return Error(ID.Loc, "invalid insertelement operands");
2817 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2820 ID.Kind = ValID::t_Constant;
2829 /// ParseGlobalValue - Parse a global value with the specified type.
2830 bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
2834 bool Parsed = ParseValID(ID) ||
2835 ConvertValIDToValue(Ty, ID, V, nullptr);
2836 if (V && !(C = dyn_cast<Constant>(V)))
2837 return Error(ID.Loc, "global values must be constants");
2841 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2843 return ParseType(Ty) ||
2844 ParseGlobalValue(Ty, V);
2847 bool LLParser::parseOptionalComdat(StringRef GlobalName, Comdat *&C) {
2850 LocTy KwLoc = Lex.getLoc();
2851 if (!EatIfPresent(lltok::kw_comdat))
2854 if (EatIfPresent(lltok::lparen)) {
2855 if (Lex.getKind() != lltok::ComdatVar)
2856 return TokError("expected comdat variable");
2857 C = getComdat(Lex.getStrVal(), Lex.getLoc());
2859 if (ParseToken(lltok::rparen, "expected ')' after comdat var"))
2862 if (GlobalName.empty())
2863 return TokError("comdat cannot be unnamed");
2864 C = getComdat(GlobalName, KwLoc);
2870 /// ParseGlobalValueVector
2872 /// ::= TypeAndValue (',' TypeAndValue)*
2873 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant *> &Elts) {
2875 if (Lex.getKind() == lltok::rbrace ||
2876 Lex.getKind() == lltok::rsquare ||
2877 Lex.getKind() == lltok::greater ||
2878 Lex.getKind() == lltok::rparen)
2882 if (ParseGlobalTypeAndValue(C)) return true;
2885 while (EatIfPresent(lltok::comma)) {
2886 if (ParseGlobalTypeAndValue(C)) return true;
2893 bool LLParser::ParseMDTuple(MDNode *&MD, bool IsDistinct) {
2894 SmallVector<Metadata *, 16> Elts;
2895 if (ParseMDNodeVector(Elts))
2898 MD = (IsDistinct ? MDNode::getDistinct : MDNode::get)(Context, Elts);
2905 bool LLParser::ParseMDNode(MDNode *&N) {
2906 return ParseToken(lltok::exclaim, "expected '!' here") ||
2910 bool LLParser::ParseMDNodeTail(MDNode *&N) {
2912 if (Lex.getKind() == lltok::lbrace)
2913 return ParseMDTuple(N);
2916 return ParseMDNodeID(N);
2919 /// ParseMetadataAsValue
2920 /// ::= metadata i32 %local
2921 /// ::= metadata i32 @global
2922 /// ::= metadata i32 7
2924 /// ::= metadata !{...}
2925 /// ::= metadata !"string"
2926 bool LLParser::ParseMetadataAsValue(Value *&V, PerFunctionState &PFS) {
2927 // Note: the type 'metadata' has already been parsed.
2929 if (ParseMetadata(MD, &PFS))
2932 V = MetadataAsValue::get(Context, MD);
2936 /// ParseValueAsMetadata
2940 bool LLParser::ParseValueAsMetadata(Metadata *&MD, PerFunctionState *PFS) {
2943 if (ParseType(Ty, "expected metadata operand", Loc))
2945 if (Ty->isMetadataTy())
2946 return Error(Loc, "invalid metadata-value-metadata roundtrip");
2949 if (ParseValue(Ty, V, PFS))
2952 MD = ValueAsMetadata::get(V);
2963 bool LLParser::ParseMetadata(Metadata *&MD, PerFunctionState *PFS) {
2966 if (Lex.getKind() != lltok::exclaim)
2967 return ParseValueAsMetadata(MD, PFS);
2970 assert(Lex.getKind() == lltok::exclaim && "Expected '!' here");
2974 // ::= '!' STRINGCONSTANT
2975 if (Lex.getKind() == lltok::StringConstant) {
2977 if (ParseMDString(S))
2987 if (ParseMDNodeTail(N))
2994 //===----------------------------------------------------------------------===//
2995 // Function Parsing.
2996 //===----------------------------------------------------------------------===//
2998 bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
2999 PerFunctionState *PFS) {
3000 if (Ty->isFunctionTy())
3001 return Error(ID.Loc, "functions are not values, refer to them as pointers");
3004 case ValID::t_LocalID:
3005 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
3006 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
3007 return V == nullptr;
3008 case ValID::t_LocalName:
3009 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
3010 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
3011 return V == nullptr;
3012 case ValID::t_InlineAsm: {
3013 PointerType *PTy = dyn_cast<PointerType>(Ty);
3015 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : nullptr;
3016 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
3017 return Error(ID.Loc, "invalid type for inline asm constraint string");
3018 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1,
3019 (ID.UIntVal>>1)&1, (InlineAsm::AsmDialect(ID.UIntVal>>2)));
3022 case ValID::t_GlobalName:
3023 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
3024 return V == nullptr;
3025 case ValID::t_GlobalID:
3026 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
3027 return V == nullptr;
3028 case ValID::t_APSInt:
3029 if (!Ty->isIntegerTy())
3030 return Error(ID.Loc, "integer constant must have integer type");
3031 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
3032 V = ConstantInt::get(Context, ID.APSIntVal);
3034 case ValID::t_APFloat:
3035 if (!Ty->isFloatingPointTy() ||
3036 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
3037 return Error(ID.Loc, "floating point constant invalid for type");
3039 // The lexer has no type info, so builds all half, float, and double FP
3040 // constants as double. Fix this here. Long double does not need this.
3041 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble) {
3044 ID.APFloatVal.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven,
3046 else if (Ty->isFloatTy())
3047 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
3050 V = ConstantFP::get(Context, ID.APFloatVal);
3052 if (V->getType() != Ty)
3053 return Error(ID.Loc, "floating point constant does not have type '" +
3054 getTypeString(Ty) + "'");
3058 if (!Ty->isPointerTy())
3059 return Error(ID.Loc, "null must be a pointer type");
3060 V = ConstantPointerNull::get(cast<PointerType>(Ty));
3062 case ValID::t_Undef:
3063 // FIXME: LabelTy should not be a first-class type.
3064 if (!Ty->isFirstClassType() || Ty->isLabelTy())
3065 return Error(ID.Loc, "invalid type for undef constant");
3066 V = UndefValue::get(Ty);
3068 case ValID::t_EmptyArray:
3069 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
3070 return Error(ID.Loc, "invalid empty array initializer");
3071 V = UndefValue::get(Ty);
3074 // FIXME: LabelTy should not be a first-class type.
3075 if (!Ty->isFirstClassType() || Ty->isLabelTy())
3076 return Error(ID.Loc, "invalid type for null constant");
3077 V = Constant::getNullValue(Ty);
3079 case ValID::t_Constant:
3080 if (ID.ConstantVal->getType() != Ty)
3081 return Error(ID.Loc, "constant expression type mismatch");
3085 case ValID::t_ConstantStruct:
3086 case ValID::t_PackedConstantStruct:
3087 if (StructType *ST = dyn_cast<StructType>(Ty)) {
3088 if (ST->getNumElements() != ID.UIntVal)
3089 return Error(ID.Loc,
3090 "initializer with struct type has wrong # elements");
3091 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
3092 return Error(ID.Loc, "packed'ness of initializer and type don't match");
3094 // Verify that the elements are compatible with the structtype.
3095 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
3096 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
3097 return Error(ID.Loc, "element " + Twine(i) +
3098 " of struct initializer doesn't match struct element type");
3100 V = ConstantStruct::get(ST, makeArrayRef(ID.ConstantStructElts,
3103 return Error(ID.Loc, "constant expression type mismatch");
3106 llvm_unreachable("Invalid ValID");
3109 bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS) {
3112 return ParseValID(ID, PFS) ||
3113 ConvertValIDToValue(Ty, ID, V, PFS);
3116 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
3118 return ParseType(Ty) ||
3119 ParseValue(Ty, V, PFS);
3122 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
3123 PerFunctionState &PFS) {
3126 if (ParseTypeAndValue(V, PFS)) return true;
3127 if (!isa<BasicBlock>(V))
3128 return Error(Loc, "expected a basic block");
3129 BB = cast<BasicBlock>(V);
3135 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
3136 /// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
3137 /// OptionalAlign OptGC OptionalPrefix OptionalPrologue
3138 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
3139 // Parse the linkage.
3140 LocTy LinkageLoc = Lex.getLoc();
3143 unsigned Visibility;
3144 unsigned DLLStorageClass;
3145 AttrBuilder RetAttrs;
3147 Type *RetType = nullptr;
3148 LocTy RetTypeLoc = Lex.getLoc();
3149 if (ParseOptionalLinkage(Linkage) ||
3150 ParseOptionalVisibility(Visibility) ||
3151 ParseOptionalDLLStorageClass(DLLStorageClass) ||
3152 ParseOptionalCallingConv(CC) ||
3153 ParseOptionalReturnAttrs(RetAttrs) ||
3154 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
3157 // Verify that the linkage is ok.
3158 switch ((GlobalValue::LinkageTypes)Linkage) {
3159 case GlobalValue::ExternalLinkage:
3160 break; // always ok.
3161 case GlobalValue::ExternalWeakLinkage:
3163 return Error(LinkageLoc, "invalid linkage for function definition");
3165 case GlobalValue::PrivateLinkage:
3166 case GlobalValue::InternalLinkage:
3167 case GlobalValue::AvailableExternallyLinkage:
3168 case GlobalValue::LinkOnceAnyLinkage:
3169 case GlobalValue::LinkOnceODRLinkage:
3170 case GlobalValue::WeakAnyLinkage:
3171 case GlobalValue::WeakODRLinkage:
3173 return Error(LinkageLoc, "invalid linkage for function declaration");
3175 case GlobalValue::AppendingLinkage:
3176 case GlobalValue::CommonLinkage:
3177 return Error(LinkageLoc, "invalid function linkage type");
3180 if (!isValidVisibilityForLinkage(Visibility, Linkage))
3181 return Error(LinkageLoc,
3182 "symbol with local linkage must have default visibility");
3184 if (!FunctionType::isValidReturnType(RetType))
3185 return Error(RetTypeLoc, "invalid function return type");
3187 LocTy NameLoc = Lex.getLoc();
3189 std::string FunctionName;
3190 if (Lex.getKind() == lltok::GlobalVar) {
3191 FunctionName = Lex.getStrVal();
3192 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
3193 unsigned NameID = Lex.getUIntVal();
3195 if (NameID != NumberedVals.size())
3196 return TokError("function expected to be numbered '%" +
3197 Twine(NumberedVals.size()) + "'");
3199 return TokError("expected function name");
3204 if (Lex.getKind() != lltok::lparen)
3205 return TokError("expected '(' in function argument list");
3207 SmallVector<ArgInfo, 8> ArgList;
3209 AttrBuilder FuncAttrs;
3210 std::vector<unsigned> FwdRefAttrGrps;
3212 std::string Section;
3216 LocTy UnnamedAddrLoc;
3217 Constant *Prefix = nullptr;
3218 Constant *Prologue = nullptr;
3221 if (ParseArgumentList(ArgList, isVarArg) ||
3222 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
3224 ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false,
3226 (EatIfPresent(lltok::kw_section) &&
3227 ParseStringConstant(Section)) ||
3228 parseOptionalComdat(FunctionName, C) ||
3229 ParseOptionalAlignment(Alignment) ||
3230 (EatIfPresent(lltok::kw_gc) &&
3231 ParseStringConstant(GC)) ||
3232 (EatIfPresent(lltok::kw_prefix) &&
3233 ParseGlobalTypeAndValue(Prefix)) ||
3234 (EatIfPresent(lltok::kw_prologue) &&
3235 ParseGlobalTypeAndValue(Prologue)))
3238 if (FuncAttrs.contains(Attribute::Builtin))
3239 return Error(BuiltinLoc, "'builtin' attribute not valid on function");
3241 // If the alignment was parsed as an attribute, move to the alignment field.
3242 if (FuncAttrs.hasAlignmentAttr()) {
3243 Alignment = FuncAttrs.getAlignment();
3244 FuncAttrs.removeAttribute(Attribute::Alignment);
3247 // Okay, if we got here, the function is syntactically valid. Convert types
3248 // and do semantic checks.
3249 std::vector<Type*> ParamTypeList;
3250 SmallVector<AttributeSet, 8> Attrs;
3252 if (RetAttrs.hasAttributes())
3253 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3254 AttributeSet::ReturnIndex,
3257 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3258 ParamTypeList.push_back(ArgList[i].Ty);
3259 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
3260 AttrBuilder B(ArgList[i].Attrs, i + 1);
3261 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
3265 if (FuncAttrs.hasAttributes())
3266 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3267 AttributeSet::FunctionIndex,
3270 AttributeSet PAL = AttributeSet::get(Context, Attrs);
3272 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
3273 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
3276 FunctionType::get(RetType, ParamTypeList, isVarArg);
3277 PointerType *PFT = PointerType::getUnqual(FT);
3280 if (!FunctionName.empty()) {
3281 // If this was a definition of a forward reference, remove the definition
3282 // from the forward reference table and fill in the forward ref.
3283 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
3284 ForwardRefVals.find(FunctionName);
3285 if (FRVI != ForwardRefVals.end()) {
3286 Fn = M->getFunction(FunctionName);
3288 return Error(FRVI->second.second, "invalid forward reference to "
3289 "function as global value!");
3290 if (Fn->getType() != PFT)
3291 return Error(FRVI->second.second, "invalid forward reference to "
3292 "function '" + FunctionName + "' with wrong type!");
3294 ForwardRefVals.erase(FRVI);
3295 } else if ((Fn = M->getFunction(FunctionName))) {
3296 // Reject redefinitions.
3297 return Error(NameLoc, "invalid redefinition of function '" +
3298 FunctionName + "'");
3299 } else if (M->getNamedValue(FunctionName)) {
3300 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
3304 // If this is a definition of a forward referenced function, make sure the
3306 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
3307 = ForwardRefValIDs.find(NumberedVals.size());
3308 if (I != ForwardRefValIDs.end()) {
3309 Fn = cast<Function>(I->second.first);
3310 if (Fn->getType() != PFT)
3311 return Error(NameLoc, "type of definition and forward reference of '@" +
3312 Twine(NumberedVals.size()) + "' disagree");
3313 ForwardRefValIDs.erase(I);
3318 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
3319 else // Move the forward-reference to the correct spot in the module.
3320 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
3322 if (FunctionName.empty())
3323 NumberedVals.push_back(Fn);
3325 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
3326 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
3327 Fn->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
3328 Fn->setCallingConv(CC);
3329 Fn->setAttributes(PAL);
3330 Fn->setUnnamedAddr(UnnamedAddr);
3331 Fn->setAlignment(Alignment);
3332 Fn->setSection(Section);
3334 if (!GC.empty()) Fn->setGC(GC.c_str());
3335 Fn->setPrefixData(Prefix);
3336 Fn->setPrologueData(Prologue);
3337 ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
3339 // Add all of the arguments we parsed to the function.
3340 Function::arg_iterator ArgIt = Fn->arg_begin();
3341 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
3342 // If the argument has a name, insert it into the argument symbol table.
3343 if (ArgList[i].Name.empty()) continue;
3345 // Set the name, if it conflicted, it will be auto-renamed.
3346 ArgIt->setName(ArgList[i].Name);
3348 if (ArgIt->getName() != ArgList[i].Name)
3349 return Error(ArgList[i].Loc, "redefinition of argument '%" +
3350 ArgList[i].Name + "'");
3356 // Check the declaration has no block address forward references.
3358 if (FunctionName.empty()) {
3359 ID.Kind = ValID::t_GlobalID;
3360 ID.UIntVal = NumberedVals.size() - 1;
3362 ID.Kind = ValID::t_GlobalName;
3363 ID.StrVal = FunctionName;
3365 auto Blocks = ForwardRefBlockAddresses.find(ID);
3366 if (Blocks != ForwardRefBlockAddresses.end())
3367 return Error(Blocks->first.Loc,
3368 "cannot take blockaddress inside a declaration");
3372 bool LLParser::PerFunctionState::resolveForwardRefBlockAddresses() {
3374 if (FunctionNumber == -1) {
3375 ID.Kind = ValID::t_GlobalName;
3376 ID.StrVal = F.getName();
3378 ID.Kind = ValID::t_GlobalID;
3379 ID.UIntVal = FunctionNumber;
3382 auto Blocks = P.ForwardRefBlockAddresses.find(ID);
3383 if (Blocks == P.ForwardRefBlockAddresses.end())
3386 for (const auto &I : Blocks->second) {
3387 const ValID &BBID = I.first;
3388 GlobalValue *GV = I.second;
3390 assert((BBID.Kind == ValID::t_LocalID || BBID.Kind == ValID::t_LocalName) &&
3391 "Expected local id or name");
3393 if (BBID.Kind == ValID::t_LocalName)
3394 BB = GetBB(BBID.StrVal, BBID.Loc);
3396 BB = GetBB(BBID.UIntVal, BBID.Loc);
3398 return P.Error(BBID.Loc, "referenced value is not a basic block");
3400 GV->replaceAllUsesWith(BlockAddress::get(&F, BB));
3401 GV->eraseFromParent();
3404 P.ForwardRefBlockAddresses.erase(Blocks);
3408 /// ParseFunctionBody
3409 /// ::= '{' BasicBlock+ UseListOrderDirective* '}'
3410 bool LLParser::ParseFunctionBody(Function &Fn) {
3411 if (Lex.getKind() != lltok::lbrace)
3412 return TokError("expected '{' in function body");
3413 Lex.Lex(); // eat the {.
3415 int FunctionNumber = -1;
3416 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
3418 PerFunctionState PFS(*this, Fn, FunctionNumber);
3420 // Resolve block addresses and allow basic blocks to be forward-declared
3421 // within this function.
3422 if (PFS.resolveForwardRefBlockAddresses())
3424 SaveAndRestore<PerFunctionState *> ScopeExit(BlockAddressPFS, &PFS);
3426 // We need at least one basic block.
3427 if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_uselistorder)
3428 return TokError("function body requires at least one basic block");
3430 while (Lex.getKind() != lltok::rbrace &&
3431 Lex.getKind() != lltok::kw_uselistorder)
3432 if (ParseBasicBlock(PFS)) return true;
3434 while (Lex.getKind() != lltok::rbrace)
3435 if (ParseUseListOrder(&PFS))
3441 // Verify function is ok.
3442 return PFS.FinishFunction();
3446 /// ::= LabelStr? Instruction*
3447 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
3448 // If this basic block starts out with a name, remember it.
3450 LocTy NameLoc = Lex.getLoc();
3451 if (Lex.getKind() == lltok::LabelStr) {
3452 Name = Lex.getStrVal();
3456 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
3457 if (!BB) return true;
3459 std::string NameStr;
3461 // Parse the instructions in this block until we get a terminator.
3464 // This instruction may have three possibilities for a name: a) none
3465 // specified, b) name specified "%foo =", c) number specified: "%4 =".
3466 LocTy NameLoc = Lex.getLoc();
3470 if (Lex.getKind() == lltok::LocalVarID) {
3471 NameID = Lex.getUIntVal();
3473 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
3475 } else if (Lex.getKind() == lltok::LocalVar) {
3476 NameStr = Lex.getStrVal();
3478 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
3482 switch (ParseInstruction(Inst, BB, PFS)) {
3483 default: llvm_unreachable("Unknown ParseInstruction result!");
3484 case InstError: return true;
3486 BB->getInstList().push_back(Inst);
3488 // With a normal result, we check to see if the instruction is followed by
3489 // a comma and metadata.
3490 if (EatIfPresent(lltok::comma))
3491 if (ParseInstructionMetadata(Inst, &PFS))
3494 case InstExtraComma:
3495 BB->getInstList().push_back(Inst);
3497 // If the instruction parser ate an extra comma at the end of it, it
3498 // *must* be followed by metadata.
3499 if (ParseInstructionMetadata(Inst, &PFS))
3504 // Set the name on the instruction.
3505 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
3506 } while (!isa<TerminatorInst>(Inst));
3511 //===----------------------------------------------------------------------===//
3512 // Instruction Parsing.
3513 //===----------------------------------------------------------------------===//
3515 /// ParseInstruction - Parse one of the many different instructions.
3517 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
3518 PerFunctionState &PFS) {
3519 lltok::Kind Token = Lex.getKind();
3520 if (Token == lltok::Eof)
3521 return TokError("found end of file when expecting more instructions");
3522 LocTy Loc = Lex.getLoc();
3523 unsigned KeywordVal = Lex.getUIntVal();
3524 Lex.Lex(); // Eat the keyword.
3527 default: return Error(Loc, "expected instruction opcode");
3528 // Terminator Instructions.
3529 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
3530 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
3531 case lltok::kw_br: return ParseBr(Inst, PFS);
3532 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
3533 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
3534 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
3535 case lltok::kw_resume: return ParseResume(Inst, PFS);
3536 // Binary Operators.
3540 case lltok::kw_shl: {
3541 bool NUW = EatIfPresent(lltok::kw_nuw);
3542 bool NSW = EatIfPresent(lltok::kw_nsw);
3543 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
3545 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3547 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
3548 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
3551 case lltok::kw_fadd:
3552 case lltok::kw_fsub:
3553 case lltok::kw_fmul:
3554 case lltok::kw_fdiv:
3555 case lltok::kw_frem: {
3556 FastMathFlags FMF = EatFastMathFlagsIfPresent();
3557 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
3561 Inst->setFastMathFlags(FMF);
3565 case lltok::kw_sdiv:
3566 case lltok::kw_udiv:
3567 case lltok::kw_lshr:
3568 case lltok::kw_ashr: {
3569 bool Exact = EatIfPresent(lltok::kw_exact);
3571 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3572 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
3576 case lltok::kw_urem:
3577 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
3580 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
3581 case lltok::kw_icmp:
3582 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
3584 case lltok::kw_trunc:
3585 case lltok::kw_zext:
3586 case lltok::kw_sext:
3587 case lltok::kw_fptrunc:
3588 case lltok::kw_fpext:
3589 case lltok::kw_bitcast:
3590 case lltok::kw_addrspacecast:
3591 case lltok::kw_uitofp:
3592 case lltok::kw_sitofp:
3593 case lltok::kw_fptoui:
3594 case lltok::kw_fptosi:
3595 case lltok::kw_inttoptr:
3596 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
3598 case lltok::kw_select: return ParseSelect(Inst, PFS);
3599 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
3600 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
3601 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
3602 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
3603 case lltok::kw_phi: return ParsePHI(Inst, PFS);
3604 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
3606 case lltok::kw_call: return ParseCall(Inst, PFS, CallInst::TCK_None);
3607 case lltok::kw_tail: return ParseCall(Inst, PFS, CallInst::TCK_Tail);
3608 case lltok::kw_musttail: return ParseCall(Inst, PFS, CallInst::TCK_MustTail);
3610 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
3611 case lltok::kw_load: return ParseLoad(Inst, PFS);
3612 case lltok::kw_store: return ParseStore(Inst, PFS);
3613 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
3614 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
3615 case lltok::kw_fence: return ParseFence(Inst, PFS);
3616 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
3617 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
3618 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
3622 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
3623 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
3624 if (Opc == Instruction::FCmp) {
3625 switch (Lex.getKind()) {
3626 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
3627 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
3628 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
3629 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
3630 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
3631 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
3632 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
3633 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
3634 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
3635 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
3636 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
3637 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
3638 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
3639 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
3640 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
3641 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
3642 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
3645 switch (Lex.getKind()) {
3646 default: return TokError("expected icmp predicate (e.g. 'eq')");
3647 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
3648 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
3649 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
3650 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
3651 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
3652 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
3653 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
3654 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
3655 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
3656 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3663 //===----------------------------------------------------------------------===//
3664 // Terminator Instructions.
3665 //===----------------------------------------------------------------------===//
3667 /// ParseRet - Parse a return instruction.
3668 /// ::= 'ret' void (',' !dbg, !1)*
3669 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
3670 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3671 PerFunctionState &PFS) {
3672 SMLoc TypeLoc = Lex.getLoc();
3674 if (ParseType(Ty, true /*void allowed*/)) return true;
3676 Type *ResType = PFS.getFunction().getReturnType();
3678 if (Ty->isVoidTy()) {
3679 if (!ResType->isVoidTy())
3680 return Error(TypeLoc, "value doesn't match function result type '" +
3681 getTypeString(ResType) + "'");
3683 Inst = ReturnInst::Create(Context);
3688 if (ParseValue(Ty, RV, PFS)) return true;
3690 if (ResType != RV->getType())
3691 return Error(TypeLoc, "value doesn't match function result type '" +
3692 getTypeString(ResType) + "'");
3694 Inst = ReturnInst::Create(Context, RV);
3700 /// ::= 'br' TypeAndValue
3701 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3702 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
3705 BasicBlock *Op1, *Op2;
3706 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
3708 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
3709 Inst = BranchInst::Create(BB);
3713 if (Op0->getType() != Type::getInt1Ty(Context))
3714 return Error(Loc, "branch condition must have 'i1' type");
3716 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
3717 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
3718 ParseToken(lltok::comma, "expected ',' after true destination") ||
3719 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
3722 Inst = BranchInst::Create(Op1, Op2, Op0);
3728 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
3730 /// ::= (TypeAndValue ',' TypeAndValue)*
3731 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
3732 LocTy CondLoc, BBLoc;
3734 BasicBlock *DefaultBB;
3735 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
3736 ParseToken(lltok::comma, "expected ',' after switch condition") ||
3737 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
3738 ParseToken(lltok::lsquare, "expected '[' with switch table"))
3741 if (!Cond->getType()->isIntegerTy())
3742 return Error(CondLoc, "switch condition must have integer type");
3744 // Parse the jump table pairs.
3745 SmallPtrSet<Value*, 32> SeenCases;
3746 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
3747 while (Lex.getKind() != lltok::rsquare) {
3751 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
3752 ParseToken(lltok::comma, "expected ',' after case value") ||
3753 ParseTypeAndBasicBlock(DestBB, PFS))
3756 if (!SeenCases.insert(Constant).second)
3757 return Error(CondLoc, "duplicate case value in switch");
3758 if (!isa<ConstantInt>(Constant))
3759 return Error(CondLoc, "case value is not a constant integer");
3761 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
3764 Lex.Lex(); // Eat the ']'.
3766 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
3767 for (unsigned i = 0, e = Table.size(); i != e; ++i)
3768 SI->addCase(Table[i].first, Table[i].second);
3775 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
3776 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
3779 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
3780 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
3781 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
3784 if (!Address->getType()->isPointerTy())
3785 return Error(AddrLoc, "indirectbr address must have pointer type");
3787 // Parse the destination list.
3788 SmallVector<BasicBlock*, 16> DestList;
3790 if (Lex.getKind() != lltok::rsquare) {
3792 if (ParseTypeAndBasicBlock(DestBB, PFS))
3794 DestList.push_back(DestBB);
3796 while (EatIfPresent(lltok::comma)) {
3797 if (ParseTypeAndBasicBlock(DestBB, PFS))
3799 DestList.push_back(DestBB);
3803 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
3806 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
3807 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
3808 IBI->addDestination(DestList[i]);
3815 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3816 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3817 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3818 LocTy CallLoc = Lex.getLoc();
3819 AttrBuilder RetAttrs, FnAttrs;
3820 std::vector<unsigned> FwdRefAttrGrps;
3823 Type *RetType = nullptr;
3826 SmallVector<ParamInfo, 16> ArgList;
3828 BasicBlock *NormalBB, *UnwindBB;
3829 if (ParseOptionalCallingConv(CC) ||
3830 ParseOptionalReturnAttrs(RetAttrs) ||
3831 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3832 ParseValID(CalleeID) ||
3833 ParseParameterList(ArgList, PFS) ||
3834 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
3836 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3837 ParseTypeAndBasicBlock(NormalBB, PFS) ||
3838 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3839 ParseTypeAndBasicBlock(UnwindBB, PFS))
3842 // If RetType is a non-function pointer type, then this is the short syntax
3843 // for the call, which means that RetType is just the return type. Infer the
3844 // rest of the function argument types from the arguments that are present.
3845 PointerType *PFTy = nullptr;
3846 FunctionType *Ty = nullptr;
3847 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3848 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3849 // Pull out the types of all of the arguments...
3850 std::vector<Type*> ParamTypes;
3851 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3852 ParamTypes.push_back(ArgList[i].V->getType());
3854 if (!FunctionType::isValidReturnType(RetType))
3855 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3857 Ty = FunctionType::get(RetType, ParamTypes, false);
3858 PFTy = PointerType::getUnqual(Ty);
3861 // Look up the callee.
3863 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3865 // Set up the Attribute for the function.
3866 SmallVector<AttributeSet, 8> Attrs;
3867 if (RetAttrs.hasAttributes())
3868 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3869 AttributeSet::ReturnIndex,
3872 SmallVector<Value*, 8> Args;
3874 // Loop through FunctionType's arguments and ensure they are specified
3875 // correctly. Also, gather any parameter attributes.
3876 FunctionType::param_iterator I = Ty->param_begin();
3877 FunctionType::param_iterator E = Ty->param_end();
3878 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3879 Type *ExpectedTy = nullptr;
3882 } else if (!Ty->isVarArg()) {
3883 return Error(ArgList[i].Loc, "too many arguments specified");
3886 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3887 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3888 getTypeString(ExpectedTy) + "'");
3889 Args.push_back(ArgList[i].V);
3890 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
3891 AttrBuilder B(ArgList[i].Attrs, i + 1);
3892 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
3897 return Error(CallLoc, "not enough parameters specified for call");
3899 if (FnAttrs.hasAttributes())
3900 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3901 AttributeSet::FunctionIndex,
3904 // Finish off the Attribute and check them
3905 AttributeSet PAL = AttributeSet::get(Context, Attrs);
3907 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB, Args);
3908 II->setCallingConv(CC);
3909 II->setAttributes(PAL);
3910 ForwardRefAttrGroups[II] = FwdRefAttrGrps;
3916 /// ::= 'resume' TypeAndValue
3917 bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
3918 Value *Exn; LocTy ExnLoc;
3919 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
3922 ResumeInst *RI = ResumeInst::Create(Exn);
3927 //===----------------------------------------------------------------------===//
3928 // Binary Operators.
3929 //===----------------------------------------------------------------------===//
3932 /// ::= ArithmeticOps TypeAndValue ',' Value
3934 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3935 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3936 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3937 unsigned Opc, unsigned OperandType) {
3938 LocTy Loc; Value *LHS, *RHS;
3939 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3940 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3941 ParseValue(LHS->getType(), RHS, PFS))
3945 switch (OperandType) {
3946 default: llvm_unreachable("Unknown operand type!");
3947 case 0: // int or FP.
3948 Valid = LHS->getType()->isIntOrIntVectorTy() ||
3949 LHS->getType()->isFPOrFPVectorTy();
3951 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
3952 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
3956 return Error(Loc, "invalid operand type for instruction");
3958 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3963 /// ::= ArithmeticOps TypeAndValue ',' Value {
3964 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3966 LocTy Loc; Value *LHS, *RHS;
3967 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3968 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3969 ParseValue(LHS->getType(), RHS, PFS))
3972 if (!LHS->getType()->isIntOrIntVectorTy())
3973 return Error(Loc,"instruction requires integer or integer vector operands");
3975 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3981 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3982 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3983 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3985 // Parse the integer/fp comparison predicate.
3989 if (ParseCmpPredicate(Pred, Opc) ||
3990 ParseTypeAndValue(LHS, Loc, PFS) ||
3991 ParseToken(lltok::comma, "expected ',' after compare value") ||
3992 ParseValue(LHS->getType(), RHS, PFS))
3995 if (Opc == Instruction::FCmp) {
3996 if (!LHS->getType()->isFPOrFPVectorTy())
3997 return Error(Loc, "fcmp requires floating point operands");
3998 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
4000 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
4001 if (!LHS->getType()->isIntOrIntVectorTy() &&
4002 !LHS->getType()->getScalarType()->isPointerTy())
4003 return Error(Loc, "icmp requires integer operands");
4004 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
4009 //===----------------------------------------------------------------------===//
4010 // Other Instructions.
4011 //===----------------------------------------------------------------------===//
4015 /// ::= CastOpc TypeAndValue 'to' Type
4016 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
4020 Type *DestTy = nullptr;
4021 if (ParseTypeAndValue(Op, Loc, PFS) ||
4022 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
4026 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
4027 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
4028 return Error(Loc, "invalid cast opcode for cast from '" +
4029 getTypeString(Op->getType()) + "' to '" +
4030 getTypeString(DestTy) + "'");
4032 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
4037 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
4038 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
4040 Value *Op0, *Op1, *Op2;
4041 if (ParseTypeAndValue(Op0, Loc, PFS) ||
4042 ParseToken(lltok::comma, "expected ',' after select condition") ||
4043 ParseTypeAndValue(Op1, PFS) ||
4044 ParseToken(lltok::comma, "expected ',' after select value") ||
4045 ParseTypeAndValue(Op2, PFS))
4048 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
4049 return Error(Loc, Reason);
4051 Inst = SelectInst::Create(Op0, Op1, Op2);
4056 /// ::= 'va_arg' TypeAndValue ',' Type
4057 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
4059 Type *EltTy = nullptr;
4061 if (ParseTypeAndValue(Op, PFS) ||
4062 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
4063 ParseType(EltTy, TypeLoc))
4066 if (!EltTy->isFirstClassType())
4067 return Error(TypeLoc, "va_arg requires operand with first class type");
4069 Inst = new VAArgInst(Op, EltTy);
4073 /// ParseExtractElement
4074 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
4075 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
4078 if (ParseTypeAndValue(Op0, Loc, PFS) ||
4079 ParseToken(lltok::comma, "expected ',' after extract value") ||
4080 ParseTypeAndValue(Op1, PFS))
4083 if (!ExtractElementInst::isValidOperands(Op0, Op1))
4084 return Error(Loc, "invalid extractelement operands");
4086 Inst = ExtractElementInst::Create(Op0, Op1);
4090 /// ParseInsertElement
4091 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
4092 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
4094 Value *Op0, *Op1, *Op2;
4095 if (ParseTypeAndValue(Op0, Loc, PFS) ||
4096 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
4097 ParseTypeAndValue(Op1, PFS) ||
4098 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
4099 ParseTypeAndValue(Op2, PFS))
4102 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
4103 return Error(Loc, "invalid insertelement operands");
4105 Inst = InsertElementInst::Create(Op0, Op1, Op2);
4109 /// ParseShuffleVector
4110 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
4111 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
4113 Value *Op0, *Op1, *Op2;
4114 if (ParseTypeAndValue(Op0, Loc, PFS) ||
4115 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
4116 ParseTypeAndValue(Op1, PFS) ||
4117 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
4118 ParseTypeAndValue(Op2, PFS))
4121 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
4122 return Error(Loc, "invalid shufflevector operands");
4124 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
4129 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
4130 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
4131 Type *Ty = nullptr; LocTy TypeLoc;
4134 if (ParseType(Ty, TypeLoc) ||
4135 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
4136 ParseValue(Ty, Op0, PFS) ||
4137 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
4138 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
4139 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
4142 bool AteExtraComma = false;
4143 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
4145 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
4147 if (!EatIfPresent(lltok::comma))
4150 if (Lex.getKind() == lltok::MetadataVar) {
4151 AteExtraComma = true;
4155 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
4156 ParseValue(Ty, Op0, PFS) ||
4157 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
4158 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
4159 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
4163 if (!Ty->isFirstClassType())
4164 return Error(TypeLoc, "phi node must have first class type");
4166 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
4167 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
4168 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
4170 return AteExtraComma ? InstExtraComma : InstNormal;
4174 /// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
4176 /// ::= 'catch' TypeAndValue
4178 /// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
4179 bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
4180 Type *Ty = nullptr; LocTy TyLoc;
4181 Value *PersFn; LocTy PersFnLoc;
4183 if (ParseType(Ty, TyLoc) ||
4184 ParseToken(lltok::kw_personality, "expected 'personality'") ||
4185 ParseTypeAndValue(PersFn, PersFnLoc, PFS))
4188 LandingPadInst *LP = LandingPadInst::Create(Ty, PersFn, 0);
4189 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
4191 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
4192 LandingPadInst::ClauseType CT;
4193 if (EatIfPresent(lltok::kw_catch))
4194 CT = LandingPadInst::Catch;
4195 else if (EatIfPresent(lltok::kw_filter))
4196 CT = LandingPadInst::Filter;
4198 return TokError("expected 'catch' or 'filter' clause type");
4202 if (ParseTypeAndValue(V, VLoc, PFS)) {
4207 // A 'catch' type expects a non-array constant. A filter clause expects an
4209 if (CT == LandingPadInst::Catch) {
4210 if (isa<ArrayType>(V->getType()))
4211 Error(VLoc, "'catch' clause has an invalid type");
4213 if (!isa<ArrayType>(V->getType()))
4214 Error(VLoc, "'filter' clause has an invalid type");
4217 LP->addClause(cast<Constant>(V));
4225 /// ::= 'call' OptionalCallingConv OptionalAttrs Type Value
4226 /// ParameterList OptionalAttrs
4227 /// ::= 'tail' 'call' OptionalCallingConv OptionalAttrs Type Value
4228 /// ParameterList OptionalAttrs
4229 /// ::= 'musttail' 'call' OptionalCallingConv OptionalAttrs Type Value
4230 /// ParameterList OptionalAttrs
4231 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
4232 CallInst::TailCallKind TCK) {
4233 AttrBuilder RetAttrs, FnAttrs;
4234 std::vector<unsigned> FwdRefAttrGrps;
4237 Type *RetType = nullptr;
4240 SmallVector<ParamInfo, 16> ArgList;
4241 LocTy CallLoc = Lex.getLoc();
4243 if ((TCK != CallInst::TCK_None &&
4244 ParseToken(lltok::kw_call, "expected 'tail call'")) ||
4245 ParseOptionalCallingConv(CC) ||
4246 ParseOptionalReturnAttrs(RetAttrs) ||
4247 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
4248 ParseValID(CalleeID) ||
4249 ParseParameterList(ArgList, PFS, TCK == CallInst::TCK_MustTail,
4250 PFS.getFunction().isVarArg()) ||
4251 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
4255 // If RetType is a non-function pointer type, then this is the short syntax
4256 // for the call, which means that RetType is just the return type. Infer the
4257 // rest of the function argument types from the arguments that are present.
4258 PointerType *PFTy = nullptr;
4259 FunctionType *Ty = nullptr;
4260 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
4261 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
4262 // Pull out the types of all of the arguments...
4263 std::vector<Type*> ParamTypes;
4264 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
4265 ParamTypes.push_back(ArgList[i].V->getType());
4267 if (!FunctionType::isValidReturnType(RetType))
4268 return Error(RetTypeLoc, "Invalid result type for LLVM function");
4270 Ty = FunctionType::get(RetType, ParamTypes, false);
4271 PFTy = PointerType::getUnqual(Ty);
4274 // Look up the callee.
4276 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
4278 // Set up the Attribute for the function.
4279 SmallVector<AttributeSet, 8> Attrs;
4280 if (RetAttrs.hasAttributes())
4281 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4282 AttributeSet::ReturnIndex,
4285 SmallVector<Value*, 8> Args;
4287 // Loop through FunctionType's arguments and ensure they are specified
4288 // correctly. Also, gather any parameter attributes.
4289 FunctionType::param_iterator I = Ty->param_begin();
4290 FunctionType::param_iterator E = Ty->param_end();
4291 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
4292 Type *ExpectedTy = nullptr;
4295 } else if (!Ty->isVarArg()) {
4296 return Error(ArgList[i].Loc, "too many arguments specified");
4299 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
4300 return Error(ArgList[i].Loc, "argument is not of expected type '" +
4301 getTypeString(ExpectedTy) + "'");
4302 Args.push_back(ArgList[i].V);
4303 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
4304 AttrBuilder B(ArgList[i].Attrs, i + 1);
4305 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
4310 return Error(CallLoc, "not enough parameters specified for call");
4312 if (FnAttrs.hasAttributes())
4313 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4314 AttributeSet::FunctionIndex,
4317 // Finish off the Attribute and check them
4318 AttributeSet PAL = AttributeSet::get(Context, Attrs);
4320 CallInst *CI = CallInst::Create(Callee, Args);
4321 CI->setTailCallKind(TCK);
4322 CI->setCallingConv(CC);
4323 CI->setAttributes(PAL);
4324 ForwardRefAttrGroups[CI] = FwdRefAttrGrps;
4329 //===----------------------------------------------------------------------===//
4330 // Memory Instructions.
4331 //===----------------------------------------------------------------------===//
4334 /// ::= 'alloca' 'inalloca'? Type (',' TypeAndValue)? (',' 'align' i32)?
4335 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
4336 Value *Size = nullptr;
4338 unsigned Alignment = 0;
4341 bool IsInAlloca = EatIfPresent(lltok::kw_inalloca);
4343 if (ParseType(Ty)) return true;
4345 bool AteExtraComma = false;
4346 if (EatIfPresent(lltok::comma)) {
4347 if (Lex.getKind() == lltok::kw_align) {
4348 if (ParseOptionalAlignment(Alignment)) return true;
4349 } else if (Lex.getKind() == lltok::MetadataVar) {
4350 AteExtraComma = true;
4352 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
4353 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4358 if (Size && !Size->getType()->isIntegerTy())
4359 return Error(SizeLoc, "element count must have integer type");
4361 AllocaInst *AI = new AllocaInst(Ty, Size, Alignment);
4362 AI->setUsedWithInAlloca(IsInAlloca);
4364 return AteExtraComma ? InstExtraComma : InstNormal;
4368 /// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
4369 /// ::= 'load' 'atomic' 'volatile'? TypeAndValue
4370 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
4371 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
4372 Value *Val; LocTy Loc;
4373 unsigned Alignment = 0;
4374 bool AteExtraComma = false;
4375 bool isAtomic = false;
4376 AtomicOrdering Ordering = NotAtomic;
4377 SynchronizationScope Scope = CrossThread;
4379 if (Lex.getKind() == lltok::kw_atomic) {
4384 bool isVolatile = false;
4385 if (Lex.getKind() == lltok::kw_volatile) {
4390 if (ParseTypeAndValue(Val, Loc, PFS) ||
4391 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
4392 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4395 if (!Val->getType()->isPointerTy() ||
4396 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
4397 return Error(Loc, "load operand must be a pointer to a first class type");
4398 if (isAtomic && !Alignment)
4399 return Error(Loc, "atomic load must have explicit non-zero alignment");
4400 if (Ordering == Release || Ordering == AcquireRelease)
4401 return Error(Loc, "atomic load cannot use Release ordering");
4403 Inst = new LoadInst(Val, "", isVolatile, Alignment, Ordering, Scope);
4404 return AteExtraComma ? InstExtraComma : InstNormal;
4409 /// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
4410 /// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
4411 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
4412 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
4413 Value *Val, *Ptr; LocTy Loc, PtrLoc;
4414 unsigned Alignment = 0;
4415 bool AteExtraComma = false;
4416 bool isAtomic = false;
4417 AtomicOrdering Ordering = NotAtomic;
4418 SynchronizationScope Scope = CrossThread;
4420 if (Lex.getKind() == lltok::kw_atomic) {
4425 bool isVolatile = false;
4426 if (Lex.getKind() == lltok::kw_volatile) {
4431 if (ParseTypeAndValue(Val, Loc, PFS) ||
4432 ParseToken(lltok::comma, "expected ',' after store operand") ||
4433 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4434 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
4435 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4438 if (!Ptr->getType()->isPointerTy())
4439 return Error(PtrLoc, "store operand must be a pointer");
4440 if (!Val->getType()->isFirstClassType())
4441 return Error(Loc, "store operand must be a first class value");
4442 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
4443 return Error(Loc, "stored value and pointer type do not match");
4444 if (isAtomic && !Alignment)
4445 return Error(Loc, "atomic store must have explicit non-zero alignment");
4446 if (Ordering == Acquire || Ordering == AcquireRelease)
4447 return Error(Loc, "atomic store cannot use Acquire ordering");
4449 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, Scope);
4450 return AteExtraComma ? InstExtraComma : InstNormal;
4454 /// ::= 'cmpxchg' 'weak'? 'volatile'? TypeAndValue ',' TypeAndValue ','
4455 /// TypeAndValue 'singlethread'? AtomicOrdering AtomicOrdering
4456 int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
4457 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
4458 bool AteExtraComma = false;
4459 AtomicOrdering SuccessOrdering = NotAtomic;
4460 AtomicOrdering FailureOrdering = NotAtomic;
4461 SynchronizationScope Scope = CrossThread;
4462 bool isVolatile = false;
4463 bool isWeak = false;
4465 if (EatIfPresent(lltok::kw_weak))
4468 if (EatIfPresent(lltok::kw_volatile))
4471 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4472 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
4473 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
4474 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
4475 ParseTypeAndValue(New, NewLoc, PFS) ||
4476 ParseScopeAndOrdering(true /*Always atomic*/, Scope, SuccessOrdering) ||
4477 ParseOrdering(FailureOrdering))
4480 if (SuccessOrdering == Unordered || FailureOrdering == Unordered)
4481 return TokError("cmpxchg cannot be unordered");
4482 if (SuccessOrdering < FailureOrdering)
4483 return TokError("cmpxchg must be at least as ordered on success as failure");
4484 if (FailureOrdering == Release || FailureOrdering == AcquireRelease)
4485 return TokError("cmpxchg failure ordering cannot include release semantics");
4486 if (!Ptr->getType()->isPointerTy())
4487 return Error(PtrLoc, "cmpxchg operand must be a pointer");
4488 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
4489 return Error(CmpLoc, "compare value and pointer type do not match");
4490 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
4491 return Error(NewLoc, "new value and pointer type do not match");
4492 if (!New->getType()->isIntegerTy())
4493 return Error(NewLoc, "cmpxchg operand must be an integer");
4494 unsigned Size = New->getType()->getPrimitiveSizeInBits();
4495 if (Size < 8 || (Size & (Size - 1)))
4496 return Error(NewLoc, "cmpxchg operand must be power-of-two byte-sized"
4499 AtomicCmpXchgInst *CXI = new AtomicCmpXchgInst(
4500 Ptr, Cmp, New, SuccessOrdering, FailureOrdering, Scope);
4501 CXI->setVolatile(isVolatile);
4502 CXI->setWeak(isWeak);
4504 return AteExtraComma ? InstExtraComma : InstNormal;
4508 /// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
4509 /// 'singlethread'? AtomicOrdering
4510 int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
4511 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
4512 bool AteExtraComma = false;
4513 AtomicOrdering Ordering = NotAtomic;
4514 SynchronizationScope Scope = CrossThread;
4515 bool isVolatile = false;
4516 AtomicRMWInst::BinOp Operation;
4518 if (EatIfPresent(lltok::kw_volatile))
4521 switch (Lex.getKind()) {
4522 default: return TokError("expected binary operation in atomicrmw");
4523 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
4524 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
4525 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
4526 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
4527 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
4528 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
4529 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
4530 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
4531 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
4532 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
4533 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
4535 Lex.Lex(); // Eat the operation.
4537 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4538 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
4539 ParseTypeAndValue(Val, ValLoc, PFS) ||
4540 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4543 if (Ordering == Unordered)
4544 return TokError("atomicrmw cannot be unordered");
4545 if (!Ptr->getType()->isPointerTy())
4546 return Error(PtrLoc, "atomicrmw operand must be a pointer");
4547 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
4548 return Error(ValLoc, "atomicrmw value and pointer type do not match");
4549 if (!Val->getType()->isIntegerTy())
4550 return Error(ValLoc, "atomicrmw operand must be an integer");
4551 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
4552 if (Size < 8 || (Size & (Size - 1)))
4553 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
4556 AtomicRMWInst *RMWI =
4557 new AtomicRMWInst(Operation, Ptr, Val, Ordering, Scope);
4558 RMWI->setVolatile(isVolatile);
4560 return AteExtraComma ? InstExtraComma : InstNormal;
4564 /// ::= 'fence' 'singlethread'? AtomicOrdering
4565 int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
4566 AtomicOrdering Ordering = NotAtomic;
4567 SynchronizationScope Scope = CrossThread;
4568 if (ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4571 if (Ordering == Unordered)
4572 return TokError("fence cannot be unordered");
4573 if (Ordering == Monotonic)
4574 return TokError("fence cannot be monotonic");
4576 Inst = new FenceInst(Context, Ordering, Scope);
4580 /// ParseGetElementPtr
4581 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
4582 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
4583 Value *Ptr = nullptr;
4584 Value *Val = nullptr;
4587 bool InBounds = EatIfPresent(lltok::kw_inbounds);
4589 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
4591 Type *BaseType = Ptr->getType();
4592 PointerType *BasePointerType = dyn_cast<PointerType>(BaseType->getScalarType());
4593 if (!BasePointerType)
4594 return Error(Loc, "base of getelementptr must be a pointer");
4596 SmallVector<Value*, 16> Indices;
4597 bool AteExtraComma = false;
4598 while (EatIfPresent(lltok::comma)) {
4599 if (Lex.getKind() == lltok::MetadataVar) {
4600 AteExtraComma = true;
4603 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
4604 if (!Val->getType()->getScalarType()->isIntegerTy())
4605 return Error(EltLoc, "getelementptr index must be an integer");
4606 if (Val->getType()->isVectorTy() != Ptr->getType()->isVectorTy())
4607 return Error(EltLoc, "getelementptr index type missmatch");
4608 if (Val->getType()->isVectorTy()) {
4609 unsigned ValNumEl = cast<VectorType>(Val->getType())->getNumElements();
4610 unsigned PtrNumEl = cast<VectorType>(Ptr->getType())->getNumElements();
4611 if (ValNumEl != PtrNumEl)
4612 return Error(EltLoc,
4613 "getelementptr vector index has a wrong number of elements");
4615 Indices.push_back(Val);
4618 if (!Indices.empty() && !BasePointerType->getElementType()->isSized())
4619 return Error(Loc, "base element of getelementptr must be sized");
4621 if (!GetElementPtrInst::getIndexedType(BaseType, Indices))
4622 return Error(Loc, "invalid getelementptr indices");
4623 Inst = GetElementPtrInst::Create(Ptr, Indices);
4625 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
4626 return AteExtraComma ? InstExtraComma : InstNormal;
4629 /// ParseExtractValue
4630 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
4631 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
4632 Value *Val; LocTy Loc;
4633 SmallVector<unsigned, 4> Indices;
4635 if (ParseTypeAndValue(Val, Loc, PFS) ||
4636 ParseIndexList(Indices, AteExtraComma))
4639 if (!Val->getType()->isAggregateType())
4640 return Error(Loc, "extractvalue operand must be aggregate type");
4642 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
4643 return Error(Loc, "invalid indices for extractvalue");
4644 Inst = ExtractValueInst::Create(Val, Indices);
4645 return AteExtraComma ? InstExtraComma : InstNormal;
4648 /// ParseInsertValue
4649 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
4650 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
4651 Value *Val0, *Val1; LocTy Loc0, Loc1;
4652 SmallVector<unsigned, 4> Indices;
4654 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
4655 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
4656 ParseTypeAndValue(Val1, Loc1, PFS) ||
4657 ParseIndexList(Indices, AteExtraComma))
4660 if (!Val0->getType()->isAggregateType())
4661 return Error(Loc0, "insertvalue operand must be aggregate type");
4663 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
4664 return Error(Loc0, "invalid indices for insertvalue");
4665 Inst = InsertValueInst::Create(Val0, Val1, Indices);
4666 return AteExtraComma ? InstExtraComma : InstNormal;
4669 //===----------------------------------------------------------------------===//
4670 // Embedded metadata.
4671 //===----------------------------------------------------------------------===//
4673 /// ParseMDNodeVector
4674 /// ::= { Element (',' Element)* }
4676 /// ::= 'null' | TypeAndValue
4677 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Metadata *> &Elts) {
4678 if (ParseToken(lltok::lbrace, "expected '{' here"))
4681 // Check for an empty list.
4682 if (EatIfPresent(lltok::rbrace))
4686 // Null is a special case since it is typeless.
4687 if (EatIfPresent(lltok::kw_null)) {
4688 Elts.push_back(nullptr);
4693 if (ParseMetadata(MD, nullptr))
4696 } while (EatIfPresent(lltok::comma));
4698 return ParseToken(lltok::rbrace, "expected end of metadata node");
4701 //===----------------------------------------------------------------------===//
4702 // Use-list order directives.
4703 //===----------------------------------------------------------------------===//
4704 bool LLParser::sortUseListOrder(Value *V, ArrayRef<unsigned> Indexes,
4707 return Error(Loc, "value has no uses");
4709 unsigned NumUses = 0;
4710 SmallDenseMap<const Use *, unsigned, 16> Order;
4711 for (const Use &U : V->uses()) {
4712 if (++NumUses > Indexes.size())
4714 Order[&U] = Indexes[NumUses - 1];
4717 return Error(Loc, "value only has one use");
4718 if (Order.size() != Indexes.size() || NumUses > Indexes.size())
4719 return Error(Loc, "wrong number of indexes, expected " +
4720 Twine(std::distance(V->use_begin(), V->use_end())));
4722 V->sortUseList([&](const Use &L, const Use &R) {
4723 return Order.lookup(&L) < Order.lookup(&R);
4728 /// ParseUseListOrderIndexes
4729 /// ::= '{' uint32 (',' uint32)+ '}'
4730 bool LLParser::ParseUseListOrderIndexes(SmallVectorImpl<unsigned> &Indexes) {
4731 SMLoc Loc = Lex.getLoc();
4732 if (ParseToken(lltok::lbrace, "expected '{' here"))
4734 if (Lex.getKind() == lltok::rbrace)
4735 return Lex.Error("expected non-empty list of uselistorder indexes");
4737 // Use Offset, Max, and IsOrdered to check consistency of indexes. The
4738 // indexes should be distinct numbers in the range [0, size-1], and should
4740 unsigned Offset = 0;
4742 bool IsOrdered = true;
4743 assert(Indexes.empty() && "Expected empty order vector");
4746 if (ParseUInt32(Index))
4749 // Update consistency checks.
4750 Offset += Index - Indexes.size();
4751 Max = std::max(Max, Index);
4752 IsOrdered &= Index == Indexes.size();
4754 Indexes.push_back(Index);
4755 } while (EatIfPresent(lltok::comma));
4757 if (ParseToken(lltok::rbrace, "expected '}' here"))
4760 if (Indexes.size() < 2)
4761 return Error(Loc, "expected >= 2 uselistorder indexes");
4762 if (Offset != 0 || Max >= Indexes.size())
4763 return Error(Loc, "expected distinct uselistorder indexes in range [0, size)");
4765 return Error(Loc, "expected uselistorder indexes to change the order");
4770 /// ParseUseListOrder
4771 /// ::= 'uselistorder' Type Value ',' UseListOrderIndexes
4772 bool LLParser::ParseUseListOrder(PerFunctionState *PFS) {
4773 SMLoc Loc = Lex.getLoc();
4774 if (ParseToken(lltok::kw_uselistorder, "expected uselistorder directive"))
4778 SmallVector<unsigned, 16> Indexes;
4779 if (ParseTypeAndValue(V, PFS) ||
4780 ParseToken(lltok::comma, "expected comma in uselistorder directive") ||
4781 ParseUseListOrderIndexes(Indexes))
4784 return sortUseListOrder(V, Indexes, Loc);
4787 /// ParseUseListOrderBB
4788 /// ::= 'uselistorder_bb' @foo ',' %bar ',' UseListOrderIndexes
4789 bool LLParser::ParseUseListOrderBB() {
4790 assert(Lex.getKind() == lltok::kw_uselistorder_bb);
4791 SMLoc Loc = Lex.getLoc();
4795 SmallVector<unsigned, 16> Indexes;
4796 if (ParseValID(Fn) ||
4797 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
4798 ParseValID(Label) ||
4799 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
4800 ParseUseListOrderIndexes(Indexes))
4803 // Check the function.
4805 if (Fn.Kind == ValID::t_GlobalName)
4806 GV = M->getNamedValue(Fn.StrVal);
4807 else if (Fn.Kind == ValID::t_GlobalID)
4808 GV = Fn.UIntVal < NumberedVals.size() ? NumberedVals[Fn.UIntVal] : nullptr;
4810 return Error(Fn.Loc, "expected function name in uselistorder_bb");
4812 return Error(Fn.Loc, "invalid function forward reference in uselistorder_bb");
4813 auto *F = dyn_cast<Function>(GV);
4815 return Error(Fn.Loc, "expected function name in uselistorder_bb");
4816 if (F->isDeclaration())
4817 return Error(Fn.Loc, "invalid declaration in uselistorder_bb");
4819 // Check the basic block.
4820 if (Label.Kind == ValID::t_LocalID)
4821 return Error(Label.Loc, "invalid numeric label in uselistorder_bb");
4822 if (Label.Kind != ValID::t_LocalName)
4823 return Error(Label.Loc, "expected basic block name in uselistorder_bb");
4824 Value *V = F->getValueSymbolTable().lookup(Label.StrVal);
4826 return Error(Label.Loc, "invalid basic block in uselistorder_bb");
4827 if (!isa<BasicBlock>(V))
4828 return Error(Label.Loc, "expected basic block in uselistorder_bb");
4830 return sortUseListOrder(V, Indexes, Loc);