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 // Handle any instruction metadata forward references.
51 if (!ForwardRefInstMetadata.empty()) {
52 for (DenseMap<Instruction*, std::vector<MDRef> >::iterator
53 I = ForwardRefInstMetadata.begin(), E = ForwardRefInstMetadata.end();
55 Instruction *Inst = I->first;
56 const std::vector<MDRef> &MDList = I->second;
58 for (unsigned i = 0, e = MDList.size(); i != e; ++i) {
59 unsigned SlotNo = MDList[i].MDSlot;
61 if (SlotNo >= NumberedMetadata.size() ||
62 NumberedMetadata[SlotNo] == nullptr)
63 return Error(MDList[i].Loc, "use of undefined metadata '!" +
65 Inst->setMetadata(MDList[i].MDKind, NumberedMetadata[SlotNo]);
68 ForwardRefInstMetadata.clear();
71 for (unsigned I = 0, E = InstsWithTBAATag.size(); I < E; I++)
72 UpgradeInstWithTBAATag(InstsWithTBAATag[I]);
74 // Handle any function attribute group forward references.
75 for (std::map<Value*, std::vector<unsigned> >::iterator
76 I = ForwardRefAttrGroups.begin(), E = ForwardRefAttrGroups.end();
79 std::vector<unsigned> &Vec = I->second;
82 for (std::vector<unsigned>::iterator VI = Vec.begin(), VE = Vec.end();
84 B.merge(NumberedAttrBuilders[*VI]);
86 if (Function *Fn = dyn_cast<Function>(V)) {
87 AttributeSet AS = Fn->getAttributes();
88 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
89 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
90 AS.getFnAttributes());
94 // If the alignment was parsed as an attribute, move to the alignment
96 if (FnAttrs.hasAlignmentAttr()) {
97 Fn->setAlignment(FnAttrs.getAlignment());
98 FnAttrs.removeAttribute(Attribute::Alignment);
101 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
102 AttributeSet::get(Context,
103 AttributeSet::FunctionIndex,
105 Fn->setAttributes(AS);
106 } else if (CallInst *CI = dyn_cast<CallInst>(V)) {
107 AttributeSet AS = CI->getAttributes();
108 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
109 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
110 AS.getFnAttributes());
112 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
113 AttributeSet::get(Context,
114 AttributeSet::FunctionIndex,
116 CI->setAttributes(AS);
117 } else if (InvokeInst *II = dyn_cast<InvokeInst>(V)) {
118 AttributeSet AS = II->getAttributes();
119 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
120 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
121 AS.getFnAttributes());
123 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
124 AttributeSet::get(Context,
125 AttributeSet::FunctionIndex,
127 II->setAttributes(AS);
129 llvm_unreachable("invalid object with forward attribute group reference");
133 // If there are entries in ForwardRefBlockAddresses at this point, the
134 // function was never defined.
135 if (!ForwardRefBlockAddresses.empty())
136 return Error(ForwardRefBlockAddresses.begin()->first.Loc,
137 "expected function name in blockaddress");
139 for (unsigned i = 0, e = NumberedTypes.size(); i != e; ++i)
140 if (NumberedTypes[i].second.isValid())
141 return Error(NumberedTypes[i].second,
142 "use of undefined type '%" + Twine(i) + "'");
144 for (StringMap<std::pair<Type*, LocTy> >::iterator I =
145 NamedTypes.begin(), E = NamedTypes.end(); I != E; ++I)
146 if (I->second.second.isValid())
147 return Error(I->second.second,
148 "use of undefined type named '" + I->getKey() + "'");
150 if (!ForwardRefComdats.empty())
151 return Error(ForwardRefComdats.begin()->second,
152 "use of undefined comdat '$" +
153 ForwardRefComdats.begin()->first + "'");
155 if (!ForwardRefVals.empty())
156 return Error(ForwardRefVals.begin()->second.second,
157 "use of undefined value '@" + ForwardRefVals.begin()->first +
160 if (!ForwardRefValIDs.empty())
161 return Error(ForwardRefValIDs.begin()->second.second,
162 "use of undefined value '@" +
163 Twine(ForwardRefValIDs.begin()->first) + "'");
165 if (!ForwardRefMDNodes.empty())
166 return Error(ForwardRefMDNodes.begin()->second.second,
167 "use of undefined metadata '!" +
168 Twine(ForwardRefMDNodes.begin()->first) + "'");
171 // Look for intrinsic functions and CallInst that need to be upgraded
172 for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; )
173 UpgradeCallsToIntrinsic(FI++); // must be post-increment, as we remove
175 UpgradeDebugInfo(*M);
180 //===----------------------------------------------------------------------===//
181 // Top-Level Entities
182 //===----------------------------------------------------------------------===//
184 bool LLParser::ParseTopLevelEntities() {
186 switch (Lex.getKind()) {
187 default: return TokError("expected top-level entity");
188 case lltok::Eof: return false;
189 case lltok::kw_declare: if (ParseDeclare()) return true; break;
190 case lltok::kw_define: if (ParseDefine()) return true; break;
191 case lltok::kw_module: if (ParseModuleAsm()) return true; break;
192 case lltok::kw_target: if (ParseTargetDefinition()) return true; break;
193 case lltok::kw_deplibs: if (ParseDepLibs()) return true; break;
194 case lltok::LocalVarID: if (ParseUnnamedType()) return true; break;
195 case lltok::LocalVar: if (ParseNamedType()) return true; break;
196 case lltok::GlobalID: if (ParseUnnamedGlobal()) return true; break;
197 case lltok::GlobalVar: if (ParseNamedGlobal()) return true; break;
198 case lltok::ComdatVar: if (parseComdat()) return true; break;
199 case lltok::exclaim: if (ParseStandaloneMetadata()) return true; break;
200 case lltok::MetadataVar:if (ParseNamedMetadata()) return true; break;
202 // The Global variable production with no name can have many different
203 // optional leading prefixes, the production is:
204 // GlobalVar ::= OptionalLinkage OptionalVisibility OptionalDLLStorageClass
205 // OptionalThreadLocal OptionalAddrSpace OptionalUnNammedAddr
206 // ('constant'|'global') ...
207 case lltok::kw_private: // OptionalLinkage
208 case lltok::kw_internal: // OptionalLinkage
209 case lltok::kw_weak: // OptionalLinkage
210 case lltok::kw_weak_odr: // OptionalLinkage
211 case lltok::kw_linkonce: // OptionalLinkage
212 case lltok::kw_linkonce_odr: // OptionalLinkage
213 case lltok::kw_appending: // OptionalLinkage
214 case lltok::kw_common: // OptionalLinkage
215 case lltok::kw_extern_weak: // OptionalLinkage
216 case lltok::kw_external: // OptionalLinkage
217 case lltok::kw_default: // OptionalVisibility
218 case lltok::kw_hidden: // OptionalVisibility
219 case lltok::kw_protected: // OptionalVisibility
220 case lltok::kw_dllimport: // OptionalDLLStorageClass
221 case lltok::kw_dllexport: // OptionalDLLStorageClass
222 case lltok::kw_thread_local: // OptionalThreadLocal
223 case lltok::kw_addrspace: // OptionalAddrSpace
224 case lltok::kw_constant: // GlobalType
225 case lltok::kw_global: { // GlobalType
226 unsigned Linkage, Visibility, DLLStorageClass;
228 GlobalVariable::ThreadLocalMode TLM;
230 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
231 ParseOptionalVisibility(Visibility) ||
232 ParseOptionalDLLStorageClass(DLLStorageClass) ||
233 ParseOptionalThreadLocal(TLM) ||
234 parseOptionalUnnamedAddr(UnnamedAddr) ||
235 ParseGlobal("", SMLoc(), Linkage, HasLinkage, Visibility,
236 DLLStorageClass, TLM, UnnamedAddr))
241 case lltok::kw_attributes: if (ParseUnnamedAttrGrp()) return true; break;
242 case lltok::kw_uselistorder: if (ParseUseListOrder()) return true; break;
243 case lltok::kw_uselistorder_bb:
244 if (ParseUseListOrderBB()) return true; break;
251 /// ::= 'module' 'asm' STRINGCONSTANT
252 bool LLParser::ParseModuleAsm() {
253 assert(Lex.getKind() == lltok::kw_module);
257 if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
258 ParseStringConstant(AsmStr)) return true;
260 M->appendModuleInlineAsm(AsmStr);
265 /// ::= 'target' 'triple' '=' STRINGCONSTANT
266 /// ::= 'target' 'datalayout' '=' STRINGCONSTANT
267 bool LLParser::ParseTargetDefinition() {
268 assert(Lex.getKind() == lltok::kw_target);
271 default: return TokError("unknown target property");
272 case lltok::kw_triple:
274 if (ParseToken(lltok::equal, "expected '=' after target triple") ||
275 ParseStringConstant(Str))
277 M->setTargetTriple(Str);
279 case lltok::kw_datalayout:
281 if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
282 ParseStringConstant(Str))
284 M->setDataLayout(Str);
290 /// ::= 'deplibs' '=' '[' ']'
291 /// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
292 /// FIXME: Remove in 4.0. Currently parse, but ignore.
293 bool LLParser::ParseDepLibs() {
294 assert(Lex.getKind() == lltok::kw_deplibs);
296 if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
297 ParseToken(lltok::lsquare, "expected '=' after deplibs"))
300 if (EatIfPresent(lltok::rsquare))
305 if (ParseStringConstant(Str)) return true;
306 } while (EatIfPresent(lltok::comma));
308 return ParseToken(lltok::rsquare, "expected ']' at end of list");
311 /// ParseUnnamedType:
312 /// ::= LocalVarID '=' 'type' type
313 bool LLParser::ParseUnnamedType() {
314 LocTy TypeLoc = Lex.getLoc();
315 unsigned TypeID = Lex.getUIntVal();
316 Lex.Lex(); // eat LocalVarID;
318 if (ParseToken(lltok::equal, "expected '=' after name") ||
319 ParseToken(lltok::kw_type, "expected 'type' after '='"))
322 if (TypeID >= NumberedTypes.size())
323 NumberedTypes.resize(TypeID+1);
325 Type *Result = nullptr;
326 if (ParseStructDefinition(TypeLoc, "",
327 NumberedTypes[TypeID], Result)) return true;
329 if (!isa<StructType>(Result)) {
330 std::pair<Type*, LocTy> &Entry = NumberedTypes[TypeID];
332 return Error(TypeLoc, "non-struct types may not be recursive");
333 Entry.first = Result;
334 Entry.second = SMLoc();
342 /// ::= LocalVar '=' 'type' type
343 bool LLParser::ParseNamedType() {
344 std::string Name = Lex.getStrVal();
345 LocTy NameLoc = Lex.getLoc();
346 Lex.Lex(); // eat LocalVar.
348 if (ParseToken(lltok::equal, "expected '=' after name") ||
349 ParseToken(lltok::kw_type, "expected 'type' after name"))
352 Type *Result = nullptr;
353 if (ParseStructDefinition(NameLoc, Name,
354 NamedTypes[Name], Result)) return true;
356 if (!isa<StructType>(Result)) {
357 std::pair<Type*, LocTy> &Entry = NamedTypes[Name];
359 return Error(NameLoc, "non-struct types may not be recursive");
360 Entry.first = Result;
361 Entry.second = SMLoc();
369 /// ::= 'declare' FunctionHeader
370 bool LLParser::ParseDeclare() {
371 assert(Lex.getKind() == lltok::kw_declare);
375 return ParseFunctionHeader(F, false);
379 /// ::= 'define' FunctionHeader '{' ...
380 bool LLParser::ParseDefine() {
381 assert(Lex.getKind() == lltok::kw_define);
385 return ParseFunctionHeader(F, true) ||
386 ParseFunctionBody(*F);
392 bool LLParser::ParseGlobalType(bool &IsConstant) {
393 if (Lex.getKind() == lltok::kw_constant)
395 else if (Lex.getKind() == lltok::kw_global)
399 return TokError("expected 'global' or 'constant'");
405 /// ParseUnnamedGlobal:
406 /// OptionalVisibility ALIAS ...
407 /// OptionalLinkage OptionalVisibility OptionalDLLStorageClass
408 /// ... -> global variable
409 /// GlobalID '=' OptionalVisibility ALIAS ...
410 /// GlobalID '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
411 /// ... -> global variable
412 bool LLParser::ParseUnnamedGlobal() {
413 unsigned VarID = NumberedVals.size();
415 LocTy NameLoc = Lex.getLoc();
417 // Handle the GlobalID form.
418 if (Lex.getKind() == lltok::GlobalID) {
419 if (Lex.getUIntVal() != VarID)
420 return Error(Lex.getLoc(), "variable expected to be numbered '%" +
422 Lex.Lex(); // eat GlobalID;
424 if (ParseToken(lltok::equal, "expected '=' after name"))
429 unsigned Linkage, Visibility, DLLStorageClass;
430 GlobalVariable::ThreadLocalMode TLM;
432 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
433 ParseOptionalVisibility(Visibility) ||
434 ParseOptionalDLLStorageClass(DLLStorageClass) ||
435 ParseOptionalThreadLocal(TLM) ||
436 parseOptionalUnnamedAddr(UnnamedAddr))
439 if (Lex.getKind() != lltok::kw_alias)
440 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility,
441 DLLStorageClass, TLM, UnnamedAddr);
442 return ParseAlias(Name, NameLoc, Linkage, Visibility, DLLStorageClass, TLM,
446 /// ParseNamedGlobal:
447 /// GlobalVar '=' OptionalVisibility ALIAS ...
448 /// GlobalVar '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
449 /// ... -> global variable
450 bool LLParser::ParseNamedGlobal() {
451 assert(Lex.getKind() == lltok::GlobalVar);
452 LocTy NameLoc = Lex.getLoc();
453 std::string Name = Lex.getStrVal();
457 unsigned Linkage, Visibility, DLLStorageClass;
458 GlobalVariable::ThreadLocalMode TLM;
460 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
461 ParseOptionalLinkage(Linkage, HasLinkage) ||
462 ParseOptionalVisibility(Visibility) ||
463 ParseOptionalDLLStorageClass(DLLStorageClass) ||
464 ParseOptionalThreadLocal(TLM) ||
465 parseOptionalUnnamedAddr(UnnamedAddr))
468 if (Lex.getKind() != lltok::kw_alias)
469 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility,
470 DLLStorageClass, TLM, UnnamedAddr);
472 return ParseAlias(Name, NameLoc, Linkage, Visibility, DLLStorageClass, TLM,
476 bool LLParser::parseComdat() {
477 assert(Lex.getKind() == lltok::ComdatVar);
478 std::string Name = Lex.getStrVal();
479 LocTy NameLoc = Lex.getLoc();
482 if (ParseToken(lltok::equal, "expected '=' here"))
485 if (ParseToken(lltok::kw_comdat, "expected comdat keyword"))
486 return TokError("expected comdat type");
488 Comdat::SelectionKind SK;
489 switch (Lex.getKind()) {
491 return TokError("unknown selection kind");
495 case lltok::kw_exactmatch:
496 SK = Comdat::ExactMatch;
498 case lltok::kw_largest:
499 SK = Comdat::Largest;
501 case lltok::kw_noduplicates:
502 SK = Comdat::NoDuplicates;
504 case lltok::kw_samesize:
505 SK = Comdat::SameSize;
510 // See if the comdat was forward referenced, if so, use the comdat.
511 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
512 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
513 if (I != ComdatSymTab.end() && !ForwardRefComdats.erase(Name))
514 return Error(NameLoc, "redefinition of comdat '$" + Name + "'");
517 if (I != ComdatSymTab.end())
520 C = M->getOrInsertComdat(Name);
521 C->setSelectionKind(SK);
527 // ::= '!' STRINGCONSTANT
528 bool LLParser::ParseMDString(MDString *&Result) {
530 if (ParseStringConstant(Str)) return true;
531 llvm::UpgradeMDStringConstant(Str);
532 Result = MDString::get(Context, Str);
537 // ::= '!' MDNodeNumber
539 /// This version of ParseMDNodeID returns the slot number and null in the case
540 /// of a forward reference.
541 bool LLParser::ParseMDNodeID(MDNode *&Result, unsigned &SlotNo) {
542 // !{ ..., !42, ... }
543 if (ParseUInt32(SlotNo)) return true;
545 // Check existing MDNode.
546 if (SlotNo < NumberedMetadata.size() && NumberedMetadata[SlotNo] != nullptr)
547 Result = NumberedMetadata[SlotNo];
553 bool LLParser::ParseMDNodeID(MDNode *&Result) {
554 // !{ ..., !42, ... }
556 if (ParseMDNodeID(Result, MID)) return true;
558 // If not a forward reference, just return it now.
559 if (Result) return false;
561 // Otherwise, create MDNode forward reference.
562 MDNode *FwdNode = MDNode::getTemporary(Context, None);
563 ForwardRefMDNodes[MID] = std::make_pair(FwdNode, Lex.getLoc());
565 if (NumberedMetadata.size() <= MID)
566 NumberedMetadata.resize(MID+1);
567 NumberedMetadata[MID] = FwdNode;
572 /// ParseNamedMetadata:
573 /// !foo = !{ !1, !2 }
574 bool LLParser::ParseNamedMetadata() {
575 assert(Lex.getKind() == lltok::MetadataVar);
576 std::string Name = Lex.getStrVal();
579 if (ParseToken(lltok::equal, "expected '=' here") ||
580 ParseToken(lltok::exclaim, "Expected '!' here") ||
581 ParseToken(lltok::lbrace, "Expected '{' here"))
584 NamedMDNode *NMD = M->getOrInsertNamedMetadata(Name);
585 if (Lex.getKind() != lltok::rbrace)
587 if (ParseToken(lltok::exclaim, "Expected '!' here"))
591 if (ParseMDNodeID(N)) return true;
593 } while (EatIfPresent(lltok::comma));
595 if (ParseToken(lltok::rbrace, "expected end of metadata node"))
601 /// ParseStandaloneMetadata:
603 bool LLParser::ParseStandaloneMetadata() {
604 assert(Lex.getKind() == lltok::exclaim);
606 unsigned MetadataID = 0;
610 SmallVector<Value *, 16> Elts;
611 if (ParseUInt32(MetadataID) ||
612 ParseToken(lltok::equal, "expected '=' here") ||
613 ParseType(Ty, TyLoc) ||
614 ParseToken(lltok::exclaim, "Expected '!' here") ||
615 ParseToken(lltok::lbrace, "Expected '{' here") ||
616 ParseMDNodeVector(Elts, nullptr) ||
617 ParseToken(lltok::rbrace, "expected end of metadata node"))
620 MDNode *Init = MDNode::get(Context, Elts);
622 // See if this was forward referenced, if so, handle it.
623 std::map<unsigned, std::pair<TrackingVH<MDNode>, LocTy> >::iterator
624 FI = ForwardRefMDNodes.find(MetadataID);
625 if (FI != ForwardRefMDNodes.end()) {
626 MDNode *Temp = FI->second.first;
627 Temp->replaceAllUsesWith(Init);
628 MDNode::deleteTemporary(Temp);
629 ForwardRefMDNodes.erase(FI);
631 assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work");
633 if (MetadataID >= NumberedMetadata.size())
634 NumberedMetadata.resize(MetadataID+1);
636 if (NumberedMetadata[MetadataID] != nullptr)
637 return TokError("Metadata id is already used");
638 NumberedMetadata[MetadataID] = Init;
644 static bool isValidVisibilityForLinkage(unsigned V, unsigned L) {
645 return !GlobalValue::isLocalLinkage((GlobalValue::LinkageTypes)L) ||
646 (GlobalValue::VisibilityTypes)V == GlobalValue::DefaultVisibility;
650 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility
651 /// OptionalDLLStorageClass OptionalThreadLocal
652 /// OptionalUnNammedAddr 'alias' Aliasee
657 /// Everything through OptionalUnNammedAddr has already been parsed.
659 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc, unsigned L,
660 unsigned Visibility, unsigned DLLStorageClass,
661 GlobalVariable::ThreadLocalMode TLM,
663 assert(Lex.getKind() == lltok::kw_alias);
666 GlobalValue::LinkageTypes Linkage = (GlobalValue::LinkageTypes) L;
668 if(!GlobalAlias::isValidLinkage(Linkage))
669 return Error(NameLoc, "invalid linkage type for alias");
671 if (!isValidVisibilityForLinkage(Visibility, L))
672 return Error(NameLoc,
673 "symbol with local linkage must have default visibility");
676 LocTy AliaseeLoc = Lex.getLoc();
677 if (Lex.getKind() != lltok::kw_bitcast &&
678 Lex.getKind() != lltok::kw_getelementptr &&
679 Lex.getKind() != lltok::kw_addrspacecast &&
680 Lex.getKind() != lltok::kw_inttoptr) {
681 if (ParseGlobalTypeAndValue(Aliasee))
684 // The bitcast dest type is not present, it is implied by the dest type.
688 if (ID.Kind != ValID::t_Constant)
689 return Error(AliaseeLoc, "invalid aliasee");
690 Aliasee = ID.ConstantVal;
693 Type *AliaseeType = Aliasee->getType();
694 auto *PTy = dyn_cast<PointerType>(AliaseeType);
696 return Error(AliaseeLoc, "An alias must have pointer type");
697 Type *Ty = PTy->getElementType();
698 unsigned AddrSpace = PTy->getAddressSpace();
700 // Okay, create the alias but do not insert it into the module yet.
701 std::unique_ptr<GlobalAlias> GA(
702 GlobalAlias::create(Ty, AddrSpace, (GlobalValue::LinkageTypes)Linkage,
703 Name, Aliasee, /*Parent*/ nullptr));
704 GA->setThreadLocalMode(TLM);
705 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
706 GA->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
707 GA->setUnnamedAddr(UnnamedAddr);
709 // See if this value already exists in the symbol table. If so, it is either
710 // a redefinition or a definition of a forward reference.
711 if (GlobalValue *Val = M->getNamedValue(Name)) {
712 // See if this was a redefinition. If so, there is no entry in
714 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
715 I = ForwardRefVals.find(Name);
716 if (I == ForwardRefVals.end())
717 return Error(NameLoc, "redefinition of global named '@" + Name + "'");
719 // Otherwise, this was a definition of forward ref. Verify that types
721 if (Val->getType() != GA->getType())
722 return Error(NameLoc,
723 "forward reference and definition of alias have different types");
725 // If they agree, just RAUW the old value with the alias and remove the
727 Val->replaceAllUsesWith(GA.get());
728 Val->eraseFromParent();
729 ForwardRefVals.erase(I);
732 // Insert into the module, we know its name won't collide now.
733 M->getAliasList().push_back(GA.get());
734 assert(GA->getName() == Name && "Should not be a name conflict!");
736 // The module owns this now
743 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
744 /// OptionalThreadLocal OptionalUnNammedAddr OptionalAddrSpace
745 /// OptionalExternallyInitialized GlobalType Type Const
746 /// ::= OptionalLinkage OptionalVisibility OptionalDLLStorageClass
747 /// OptionalThreadLocal OptionalUnNammedAddr OptionalAddrSpace
748 /// OptionalExternallyInitialized GlobalType Type Const
750 /// Everything up to and including OptionalUnNammedAddr has been parsed
753 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
754 unsigned Linkage, bool HasLinkage,
755 unsigned Visibility, unsigned DLLStorageClass,
756 GlobalVariable::ThreadLocalMode TLM,
758 if (!isValidVisibilityForLinkage(Visibility, Linkage))
759 return Error(NameLoc,
760 "symbol with local linkage must have default visibility");
763 bool IsConstant, IsExternallyInitialized;
764 LocTy IsExternallyInitializedLoc;
768 if (ParseOptionalAddrSpace(AddrSpace) ||
769 ParseOptionalToken(lltok::kw_externally_initialized,
770 IsExternallyInitialized,
771 &IsExternallyInitializedLoc) ||
772 ParseGlobalType(IsConstant) ||
773 ParseType(Ty, TyLoc))
776 // If the linkage is specified and is external, then no initializer is
778 Constant *Init = nullptr;
779 if (!HasLinkage || (Linkage != GlobalValue::ExternalWeakLinkage &&
780 Linkage != GlobalValue::ExternalLinkage)) {
781 if (ParseGlobalValue(Ty, Init))
785 if (Ty->isFunctionTy() || Ty->isLabelTy())
786 return Error(TyLoc, "invalid type for global variable");
788 GlobalVariable *GV = nullptr;
790 // See if the global was forward referenced, if so, use the global.
792 if (GlobalValue *GVal = M->getNamedValue(Name)) {
793 if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
794 return Error(NameLoc, "redefinition of global '@" + Name + "'");
795 GV = cast<GlobalVariable>(GVal);
798 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
799 I = ForwardRefValIDs.find(NumberedVals.size());
800 if (I != ForwardRefValIDs.end()) {
801 GV = cast<GlobalVariable>(I->second.first);
802 ForwardRefValIDs.erase(I);
807 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, nullptr,
808 Name, nullptr, GlobalVariable::NotThreadLocal,
811 if (GV->getType()->getElementType() != Ty)
813 "forward reference and definition of global have different types");
815 // Move the forward-reference to the correct spot in the module.
816 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
820 NumberedVals.push_back(GV);
822 // Set the parsed properties on the global.
824 GV->setInitializer(Init);
825 GV->setConstant(IsConstant);
826 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
827 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
828 GV->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
829 GV->setExternallyInitialized(IsExternallyInitialized);
830 GV->setThreadLocalMode(TLM);
831 GV->setUnnamedAddr(UnnamedAddr);
833 // Parse attributes on the global.
834 while (Lex.getKind() == lltok::comma) {
837 if (Lex.getKind() == lltok::kw_section) {
839 GV->setSection(Lex.getStrVal());
840 if (ParseToken(lltok::StringConstant, "expected global section string"))
842 } else if (Lex.getKind() == lltok::kw_align) {
844 if (ParseOptionalAlignment(Alignment)) return true;
845 GV->setAlignment(Alignment);
848 if (parseOptionalComdat(C))
853 return TokError("unknown global variable property!");
860 /// ParseUnnamedAttrGrp
861 /// ::= 'attributes' AttrGrpID '=' '{' AttrValPair+ '}'
862 bool LLParser::ParseUnnamedAttrGrp() {
863 assert(Lex.getKind() == lltok::kw_attributes);
864 LocTy AttrGrpLoc = Lex.getLoc();
867 assert(Lex.getKind() == lltok::AttrGrpID);
868 unsigned VarID = Lex.getUIntVal();
869 std::vector<unsigned> unused;
873 if (ParseToken(lltok::equal, "expected '=' here") ||
874 ParseToken(lltok::lbrace, "expected '{' here") ||
875 ParseFnAttributeValuePairs(NumberedAttrBuilders[VarID], unused, true,
877 ParseToken(lltok::rbrace, "expected end of attribute group"))
880 if (!NumberedAttrBuilders[VarID].hasAttributes())
881 return Error(AttrGrpLoc, "attribute group has no attributes");
886 /// ParseFnAttributeValuePairs
887 /// ::= <attr> | <attr> '=' <value>
888 bool LLParser::ParseFnAttributeValuePairs(AttrBuilder &B,
889 std::vector<unsigned> &FwdRefAttrGrps,
890 bool inAttrGrp, LocTy &BuiltinLoc) {
891 bool HaveError = false;
896 lltok::Kind Token = Lex.getKind();
897 if (Token == lltok::kw_builtin)
898 BuiltinLoc = Lex.getLoc();
901 if (!inAttrGrp) return HaveError;
902 return Error(Lex.getLoc(), "unterminated attribute group");
907 case lltok::AttrGrpID: {
908 // Allow a function to reference an attribute group:
910 // define void @foo() #1 { ... }
914 "cannot have an attribute group reference in an attribute group");
916 unsigned AttrGrpNum = Lex.getUIntVal();
917 if (inAttrGrp) break;
919 // Save the reference to the attribute group. We'll fill it in later.
920 FwdRefAttrGrps.push_back(AttrGrpNum);
923 // Target-dependent attributes:
924 case lltok::StringConstant: {
925 std::string Attr = Lex.getStrVal();
928 if (EatIfPresent(lltok::equal) &&
929 ParseStringConstant(Val))
932 B.addAttribute(Attr, Val);
936 // Target-independent attributes:
937 case lltok::kw_align: {
938 // As a hack, we allow function alignment to be initially parsed as an
939 // attribute on a function declaration/definition or added to an attribute
940 // group and later moved to the alignment field.
944 if (ParseToken(lltok::equal, "expected '=' here") ||
945 ParseUInt32(Alignment))
948 if (ParseOptionalAlignment(Alignment))
951 B.addAlignmentAttr(Alignment);
954 case lltok::kw_alignstack: {
958 if (ParseToken(lltok::equal, "expected '=' here") ||
959 ParseUInt32(Alignment))
962 if (ParseOptionalStackAlignment(Alignment))
965 B.addStackAlignmentAttr(Alignment);
968 case lltok::kw_alwaysinline: B.addAttribute(Attribute::AlwaysInline); break;
969 case lltok::kw_builtin: B.addAttribute(Attribute::Builtin); break;
970 case lltok::kw_cold: B.addAttribute(Attribute::Cold); break;
971 case lltok::kw_inlinehint: B.addAttribute(Attribute::InlineHint); break;
972 case lltok::kw_jumptable: B.addAttribute(Attribute::JumpTable); break;
973 case lltok::kw_minsize: B.addAttribute(Attribute::MinSize); break;
974 case lltok::kw_naked: B.addAttribute(Attribute::Naked); break;
975 case lltok::kw_nobuiltin: B.addAttribute(Attribute::NoBuiltin); break;
976 case lltok::kw_noduplicate: B.addAttribute(Attribute::NoDuplicate); break;
977 case lltok::kw_noimplicitfloat: B.addAttribute(Attribute::NoImplicitFloat); break;
978 case lltok::kw_noinline: B.addAttribute(Attribute::NoInline); break;
979 case lltok::kw_nonlazybind: B.addAttribute(Attribute::NonLazyBind); break;
980 case lltok::kw_noredzone: B.addAttribute(Attribute::NoRedZone); break;
981 case lltok::kw_noreturn: B.addAttribute(Attribute::NoReturn); break;
982 case lltok::kw_nounwind: B.addAttribute(Attribute::NoUnwind); break;
983 case lltok::kw_optnone: B.addAttribute(Attribute::OptimizeNone); break;
984 case lltok::kw_optsize: B.addAttribute(Attribute::OptimizeForSize); break;
985 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
986 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
987 case lltok::kw_returns_twice: B.addAttribute(Attribute::ReturnsTwice); break;
988 case lltok::kw_ssp: B.addAttribute(Attribute::StackProtect); break;
989 case lltok::kw_sspreq: B.addAttribute(Attribute::StackProtectReq); break;
990 case lltok::kw_sspstrong: B.addAttribute(Attribute::StackProtectStrong); break;
991 case lltok::kw_sanitize_address: B.addAttribute(Attribute::SanitizeAddress); break;
992 case lltok::kw_sanitize_thread: B.addAttribute(Attribute::SanitizeThread); break;
993 case lltok::kw_sanitize_memory: B.addAttribute(Attribute::SanitizeMemory); break;
994 case lltok::kw_uwtable: B.addAttribute(Attribute::UWTable); break;
997 case lltok::kw_inreg:
998 case lltok::kw_signext:
999 case lltok::kw_zeroext:
1002 "invalid use of attribute on a function");
1004 case lltok::kw_byval:
1005 case lltok::kw_dereferenceable:
1006 case lltok::kw_inalloca:
1007 case lltok::kw_nest:
1008 case lltok::kw_noalias:
1009 case lltok::kw_nocapture:
1010 case lltok::kw_nonnull:
1011 case lltok::kw_returned:
1012 case lltok::kw_sret:
1015 "invalid use of parameter-only attribute on a function");
1023 //===----------------------------------------------------------------------===//
1024 // GlobalValue Reference/Resolution Routines.
1025 //===----------------------------------------------------------------------===//
1027 /// GetGlobalVal - Get a value with the specified name or ID, creating a
1028 /// forward reference record if needed. This can return null if the value
1029 /// exists but does not have the right type.
1030 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
1032 PointerType *PTy = dyn_cast<PointerType>(Ty);
1034 Error(Loc, "global variable reference must have pointer type");
1038 // Look this name up in the normal function symbol table.
1040 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
1042 // If this is a forward reference for the value, see if we already created a
1043 // forward ref record.
1045 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
1046 I = ForwardRefVals.find(Name);
1047 if (I != ForwardRefVals.end())
1048 Val = I->second.first;
1051 // If we have the value in the symbol table or fwd-ref table, return it.
1053 if (Val->getType() == Ty) return Val;
1054 Error(Loc, "'@" + Name + "' defined with type '" +
1055 getTypeString(Val->getType()) + "'");
1059 // Otherwise, create a new forward reference for this value and remember it.
1060 GlobalValue *FwdVal;
1061 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1062 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
1064 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1065 GlobalValue::ExternalWeakLinkage, nullptr, Name,
1066 nullptr, GlobalVariable::NotThreadLocal,
1067 PTy->getAddressSpace());
1069 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1073 GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
1074 PointerType *PTy = dyn_cast<PointerType>(Ty);
1076 Error(Loc, "global variable reference must have pointer type");
1080 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
1082 // If this is a forward reference for the value, see if we already created a
1083 // forward ref record.
1085 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
1086 I = ForwardRefValIDs.find(ID);
1087 if (I != ForwardRefValIDs.end())
1088 Val = I->second.first;
1091 // If we have the value in the symbol table or fwd-ref table, return it.
1093 if (Val->getType() == Ty) return Val;
1094 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
1095 getTypeString(Val->getType()) + "'");
1099 // Otherwise, create a new forward reference for this value and remember it.
1100 GlobalValue *FwdVal;
1101 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1102 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
1104 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1105 GlobalValue::ExternalWeakLinkage, nullptr, "");
1107 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1112 //===----------------------------------------------------------------------===//
1113 // Comdat Reference/Resolution Routines.
1114 //===----------------------------------------------------------------------===//
1116 Comdat *LLParser::getComdat(const std::string &Name, LocTy Loc) {
1117 // Look this name up in the comdat symbol table.
1118 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
1119 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
1120 if (I != ComdatSymTab.end())
1123 // Otherwise, create a new forward reference for this value and remember it.
1124 Comdat *C = M->getOrInsertComdat(Name);
1125 ForwardRefComdats[Name] = Loc;
1130 //===----------------------------------------------------------------------===//
1132 //===----------------------------------------------------------------------===//
1134 /// ParseToken - If the current token has the specified kind, eat it and return
1135 /// success. Otherwise, emit the specified error and return failure.
1136 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
1137 if (Lex.getKind() != T)
1138 return TokError(ErrMsg);
1143 /// ParseStringConstant
1144 /// ::= StringConstant
1145 bool LLParser::ParseStringConstant(std::string &Result) {
1146 if (Lex.getKind() != lltok::StringConstant)
1147 return TokError("expected string constant");
1148 Result = Lex.getStrVal();
1155 bool LLParser::ParseUInt32(unsigned &Val) {
1156 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1157 return TokError("expected integer");
1158 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
1159 if (Val64 != unsigned(Val64))
1160 return TokError("expected 32-bit integer (too large)");
1168 bool LLParser::ParseUInt64(uint64_t &Val) {
1169 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1170 return TokError("expected integer");
1171 Val = Lex.getAPSIntVal().getLimitedValue();
1177 /// := 'localdynamic'
1178 /// := 'initialexec'
1180 bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
1181 switch (Lex.getKind()) {
1183 return TokError("expected localdynamic, initialexec or localexec");
1184 case lltok::kw_localdynamic:
1185 TLM = GlobalVariable::LocalDynamicTLSModel;
1187 case lltok::kw_initialexec:
1188 TLM = GlobalVariable::InitialExecTLSModel;
1190 case lltok::kw_localexec:
1191 TLM = GlobalVariable::LocalExecTLSModel;
1199 /// ParseOptionalThreadLocal
1201 /// := 'thread_local'
1202 /// := 'thread_local' '(' tlsmodel ')'
1203 bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
1204 TLM = GlobalVariable::NotThreadLocal;
1205 if (!EatIfPresent(lltok::kw_thread_local))
1208 TLM = GlobalVariable::GeneralDynamicTLSModel;
1209 if (Lex.getKind() == lltok::lparen) {
1211 return ParseTLSModel(TLM) ||
1212 ParseToken(lltok::rparen, "expected ')' after thread local model");
1217 /// ParseOptionalAddrSpace
1219 /// := 'addrspace' '(' uint32 ')'
1220 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
1222 if (!EatIfPresent(lltok::kw_addrspace))
1224 return ParseToken(lltok::lparen, "expected '(' in address space") ||
1225 ParseUInt32(AddrSpace) ||
1226 ParseToken(lltok::rparen, "expected ')' in address space");
1229 /// ParseOptionalParamAttrs - Parse a potentially empty list of parameter attributes.
1230 bool LLParser::ParseOptionalParamAttrs(AttrBuilder &B) {
1231 bool HaveError = false;
1236 lltok::Kind Token = Lex.getKind();
1238 default: // End of attributes.
1240 case lltok::kw_align: {
1242 if (ParseOptionalAlignment(Alignment))
1244 B.addAlignmentAttr(Alignment);
1247 case lltok::kw_byval: B.addAttribute(Attribute::ByVal); break;
1248 case lltok::kw_dereferenceable: {
1250 if (ParseOptionalDereferenceableBytes(Bytes))
1252 B.addDereferenceableAttr(Bytes);
1255 case lltok::kw_inalloca: B.addAttribute(Attribute::InAlloca); break;
1256 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1257 case lltok::kw_nest: B.addAttribute(Attribute::Nest); break;
1258 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1259 case lltok::kw_nocapture: B.addAttribute(Attribute::NoCapture); break;
1260 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1261 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1262 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1263 case lltok::kw_returned: B.addAttribute(Attribute::Returned); break;
1264 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1265 case lltok::kw_sret: B.addAttribute(Attribute::StructRet); break;
1266 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1268 case lltok::kw_alignstack:
1269 case lltok::kw_alwaysinline:
1270 case lltok::kw_builtin:
1271 case lltok::kw_inlinehint:
1272 case lltok::kw_jumptable:
1273 case lltok::kw_minsize:
1274 case lltok::kw_naked:
1275 case lltok::kw_nobuiltin:
1276 case lltok::kw_noduplicate:
1277 case lltok::kw_noimplicitfloat:
1278 case lltok::kw_noinline:
1279 case lltok::kw_nonlazybind:
1280 case lltok::kw_noredzone:
1281 case lltok::kw_noreturn:
1282 case lltok::kw_nounwind:
1283 case lltok::kw_optnone:
1284 case lltok::kw_optsize:
1285 case lltok::kw_returns_twice:
1286 case lltok::kw_sanitize_address:
1287 case lltok::kw_sanitize_memory:
1288 case lltok::kw_sanitize_thread:
1290 case lltok::kw_sspreq:
1291 case lltok::kw_sspstrong:
1292 case lltok::kw_uwtable:
1293 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1301 /// ParseOptionalReturnAttrs - Parse a potentially empty list of return attributes.
1302 bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
1303 bool HaveError = false;
1308 lltok::Kind Token = Lex.getKind();
1310 default: // End of attributes.
1312 case lltok::kw_dereferenceable: {
1314 if (ParseOptionalDereferenceableBytes(Bytes))
1316 B.addDereferenceableAttr(Bytes);
1319 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1320 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1321 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1322 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1323 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1326 case lltok::kw_align:
1327 case lltok::kw_byval:
1328 case lltok::kw_inalloca:
1329 case lltok::kw_nest:
1330 case lltok::kw_nocapture:
1331 case lltok::kw_returned:
1332 case lltok::kw_sret:
1333 HaveError |= Error(Lex.getLoc(), "invalid use of parameter-only attribute");
1336 case lltok::kw_alignstack:
1337 case lltok::kw_alwaysinline:
1338 case lltok::kw_builtin:
1339 case lltok::kw_cold:
1340 case lltok::kw_inlinehint:
1341 case lltok::kw_jumptable:
1342 case lltok::kw_minsize:
1343 case lltok::kw_naked:
1344 case lltok::kw_nobuiltin:
1345 case lltok::kw_noduplicate:
1346 case lltok::kw_noimplicitfloat:
1347 case lltok::kw_noinline:
1348 case lltok::kw_nonlazybind:
1349 case lltok::kw_noredzone:
1350 case lltok::kw_noreturn:
1351 case lltok::kw_nounwind:
1352 case lltok::kw_optnone:
1353 case lltok::kw_optsize:
1354 case lltok::kw_returns_twice:
1355 case lltok::kw_sanitize_address:
1356 case lltok::kw_sanitize_memory:
1357 case lltok::kw_sanitize_thread:
1359 case lltok::kw_sspreq:
1360 case lltok::kw_sspstrong:
1361 case lltok::kw_uwtable:
1362 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1365 case lltok::kw_readnone:
1366 case lltok::kw_readonly:
1367 HaveError |= Error(Lex.getLoc(), "invalid use of attribute on return type");
1374 /// ParseOptionalLinkage
1381 /// ::= 'linkonce_odr'
1382 /// ::= 'available_externally'
1385 /// ::= 'extern_weak'
1387 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1389 switch (Lex.getKind()) {
1390 default: Res=GlobalValue::ExternalLinkage; return false;
1391 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1392 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1393 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1394 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1395 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1396 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1397 case lltok::kw_available_externally:
1398 Res = GlobalValue::AvailableExternallyLinkage;
1400 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1401 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1402 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1403 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1410 /// ParseOptionalVisibility
1416 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1417 switch (Lex.getKind()) {
1418 default: Res = GlobalValue::DefaultVisibility; return false;
1419 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1420 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1421 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1427 /// ParseOptionalDLLStorageClass
1432 bool LLParser::ParseOptionalDLLStorageClass(unsigned &Res) {
1433 switch (Lex.getKind()) {
1434 default: Res = GlobalValue::DefaultStorageClass; return false;
1435 case lltok::kw_dllimport: Res = GlobalValue::DLLImportStorageClass; break;
1436 case lltok::kw_dllexport: Res = GlobalValue::DLLExportStorageClass; break;
1442 /// ParseOptionalCallingConv
1446 /// ::= 'intel_ocl_bicc'
1448 /// ::= 'x86_stdcallcc'
1449 /// ::= 'x86_fastcallcc'
1450 /// ::= 'x86_thiscallcc'
1451 /// ::= 'x86_vectorcallcc'
1452 /// ::= 'arm_apcscc'
1453 /// ::= 'arm_aapcscc'
1454 /// ::= 'arm_aapcs_vfpcc'
1455 /// ::= 'msp430_intrcc'
1456 /// ::= 'ptx_kernel'
1457 /// ::= 'ptx_device'
1459 /// ::= 'spir_kernel'
1460 /// ::= 'x86_64_sysvcc'
1461 /// ::= 'x86_64_win64cc'
1462 /// ::= 'webkit_jscc'
1464 /// ::= 'preserve_mostcc'
1465 /// ::= 'preserve_allcc'
1469 bool LLParser::ParseOptionalCallingConv(unsigned &CC) {
1470 switch (Lex.getKind()) {
1471 default: CC = CallingConv::C; return false;
1472 case lltok::kw_ccc: CC = CallingConv::C; break;
1473 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1474 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1475 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1476 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1477 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1478 case lltok::kw_x86_vectorcallcc:CC = CallingConv::X86_VectorCall; break;
1479 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1480 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1481 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1482 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1483 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1484 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1485 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1486 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1487 case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1488 case lltok::kw_x86_64_sysvcc: CC = CallingConv::X86_64_SysV; break;
1489 case lltok::kw_x86_64_win64cc: CC = CallingConv::X86_64_Win64; break;
1490 case lltok::kw_webkit_jscc: CC = CallingConv::WebKit_JS; break;
1491 case lltok::kw_anyregcc: CC = CallingConv::AnyReg; break;
1492 case lltok::kw_preserve_mostcc:CC = CallingConv::PreserveMost; break;
1493 case lltok::kw_preserve_allcc: CC = CallingConv::PreserveAll; break;
1494 case lltok::kw_ghccc: CC = CallingConv::GHC; break;
1495 case lltok::kw_cc: {
1497 return ParseUInt32(CC);
1505 /// ParseInstructionMetadata
1506 /// ::= !dbg !42 (',' !dbg !57)*
1507 bool LLParser::ParseInstructionMetadata(Instruction *Inst,
1508 PerFunctionState *PFS) {
1510 if (Lex.getKind() != lltok::MetadataVar)
1511 return TokError("expected metadata after comma");
1513 std::string Name = Lex.getStrVal();
1514 unsigned MDK = M->getMDKindID(Name);
1518 SMLoc Loc = Lex.getLoc();
1520 if (ParseToken(lltok::exclaim, "expected '!' here"))
1523 // This code is similar to that of ParseMetadataValue, however it needs to
1524 // have special-case code for a forward reference; see the comments on
1525 // ForwardRefInstMetadata for details. Also, MDStrings are not supported
1526 // at the top level here.
1527 if (Lex.getKind() == lltok::lbrace) {
1529 if (ParseMetadataListValue(ID, PFS))
1531 assert(ID.Kind == ValID::t_MDNode);
1532 Inst->setMetadata(MDK, ID.MDNodeVal);
1534 unsigned NodeID = 0;
1535 if (ParseMDNodeID(Node, NodeID))
1538 // If we got the node, add it to the instruction.
1539 Inst->setMetadata(MDK, Node);
1541 MDRef R = { Loc, MDK, NodeID };
1542 // Otherwise, remember that this should be resolved later.
1543 ForwardRefInstMetadata[Inst].push_back(R);
1547 if (MDK == LLVMContext::MD_tbaa)
1548 InstsWithTBAATag.push_back(Inst);
1550 // If this is the end of the list, we're done.
1551 } while (EatIfPresent(lltok::comma));
1555 /// ParseOptionalAlignment
1558 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1560 if (!EatIfPresent(lltok::kw_align))
1562 LocTy AlignLoc = Lex.getLoc();
1563 if (ParseUInt32(Alignment)) return true;
1564 if (!isPowerOf2_32(Alignment))
1565 return Error(AlignLoc, "alignment is not a power of two");
1566 if (Alignment > Value::MaximumAlignment)
1567 return Error(AlignLoc, "huge alignments are not supported yet");
1571 /// ParseOptionalDereferenceableBytes
1573 /// ::= 'dereferenceable' '(' 4 ')'
1574 bool LLParser::ParseOptionalDereferenceableBytes(uint64_t &Bytes) {
1576 if (!EatIfPresent(lltok::kw_dereferenceable))
1578 LocTy ParenLoc = Lex.getLoc();
1579 if (!EatIfPresent(lltok::lparen))
1580 return Error(ParenLoc, "expected '('");
1581 LocTy DerefLoc = Lex.getLoc();
1582 if (ParseUInt64(Bytes)) return true;
1583 ParenLoc = Lex.getLoc();
1584 if (!EatIfPresent(lltok::rparen))
1585 return Error(ParenLoc, "expected ')'");
1587 return Error(DerefLoc, "dereferenceable bytes must be non-zero");
1591 /// ParseOptionalCommaAlign
1595 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1597 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1598 bool &AteExtraComma) {
1599 AteExtraComma = false;
1600 while (EatIfPresent(lltok::comma)) {
1601 // Metadata at the end is an early exit.
1602 if (Lex.getKind() == lltok::MetadataVar) {
1603 AteExtraComma = true;
1607 if (Lex.getKind() != lltok::kw_align)
1608 return Error(Lex.getLoc(), "expected metadata or 'align'");
1610 if (ParseOptionalAlignment(Alignment)) return true;
1616 /// ParseScopeAndOrdering
1617 /// if isAtomic: ::= 'singlethread'? AtomicOrdering
1620 /// This sets Scope and Ordering to the parsed values.
1621 bool LLParser::ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope,
1622 AtomicOrdering &Ordering) {
1626 Scope = CrossThread;
1627 if (EatIfPresent(lltok::kw_singlethread))
1628 Scope = SingleThread;
1630 return ParseOrdering(Ordering);
1634 /// ::= AtomicOrdering
1636 /// This sets Ordering to the parsed value.
1637 bool LLParser::ParseOrdering(AtomicOrdering &Ordering) {
1638 switch (Lex.getKind()) {
1639 default: return TokError("Expected ordering on atomic instruction");
1640 case lltok::kw_unordered: Ordering = Unordered; break;
1641 case lltok::kw_monotonic: Ordering = Monotonic; break;
1642 case lltok::kw_acquire: Ordering = Acquire; break;
1643 case lltok::kw_release: Ordering = Release; break;
1644 case lltok::kw_acq_rel: Ordering = AcquireRelease; break;
1645 case lltok::kw_seq_cst: Ordering = SequentiallyConsistent; break;
1651 /// ParseOptionalStackAlignment
1653 /// ::= 'alignstack' '(' 4 ')'
1654 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1656 if (!EatIfPresent(lltok::kw_alignstack))
1658 LocTy ParenLoc = Lex.getLoc();
1659 if (!EatIfPresent(lltok::lparen))
1660 return Error(ParenLoc, "expected '('");
1661 LocTy AlignLoc = Lex.getLoc();
1662 if (ParseUInt32(Alignment)) return true;
1663 ParenLoc = Lex.getLoc();
1664 if (!EatIfPresent(lltok::rparen))
1665 return Error(ParenLoc, "expected ')'");
1666 if (!isPowerOf2_32(Alignment))
1667 return Error(AlignLoc, "stack alignment is not a power of two");
1671 /// ParseIndexList - This parses the index list for an insert/extractvalue
1672 /// instruction. This sets AteExtraComma in the case where we eat an extra
1673 /// comma at the end of the line and find that it is followed by metadata.
1674 /// Clients that don't allow metadata can call the version of this function that
1675 /// only takes one argument.
1678 /// ::= (',' uint32)+
1680 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1681 bool &AteExtraComma) {
1682 AteExtraComma = false;
1684 if (Lex.getKind() != lltok::comma)
1685 return TokError("expected ',' as start of index list");
1687 while (EatIfPresent(lltok::comma)) {
1688 if (Lex.getKind() == lltok::MetadataVar) {
1689 AteExtraComma = true;
1693 if (ParseUInt32(Idx)) return true;
1694 Indices.push_back(Idx);
1700 //===----------------------------------------------------------------------===//
1702 //===----------------------------------------------------------------------===//
1704 /// ParseType - Parse a type.
1705 bool LLParser::ParseType(Type *&Result, bool AllowVoid) {
1706 SMLoc TypeLoc = Lex.getLoc();
1707 switch (Lex.getKind()) {
1709 return TokError("expected type");
1711 // Type ::= 'float' | 'void' (etc)
1712 Result = Lex.getTyVal();
1716 // Type ::= StructType
1717 if (ParseAnonStructType(Result, false))
1720 case lltok::lsquare:
1721 // Type ::= '[' ... ']'
1722 Lex.Lex(); // eat the lsquare.
1723 if (ParseArrayVectorType(Result, false))
1726 case lltok::less: // Either vector or packed struct.
1727 // Type ::= '<' ... '>'
1729 if (Lex.getKind() == lltok::lbrace) {
1730 if (ParseAnonStructType(Result, true) ||
1731 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1733 } else if (ParseArrayVectorType(Result, true))
1736 case lltok::LocalVar: {
1738 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
1740 // If the type hasn't been defined yet, create a forward definition and
1741 // remember where that forward def'n was seen (in case it never is defined).
1743 Entry.first = StructType::create(Context, Lex.getStrVal());
1744 Entry.second = Lex.getLoc();
1746 Result = Entry.first;
1751 case lltok::LocalVarID: {
1753 if (Lex.getUIntVal() >= NumberedTypes.size())
1754 NumberedTypes.resize(Lex.getUIntVal()+1);
1755 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
1757 // If the type hasn't been defined yet, create a forward definition and
1758 // remember where that forward def'n was seen (in case it never is defined).
1760 Entry.first = StructType::create(Context);
1761 Entry.second = Lex.getLoc();
1763 Result = Entry.first;
1769 // Parse the type suffixes.
1771 switch (Lex.getKind()) {
1774 if (!AllowVoid && Result->isVoidTy())
1775 return Error(TypeLoc, "void type only allowed for function results");
1778 // Type ::= Type '*'
1780 if (Result->isLabelTy())
1781 return TokError("basic block pointers are invalid");
1782 if (Result->isVoidTy())
1783 return TokError("pointers to void are invalid - use i8* instead");
1784 if (!PointerType::isValidElementType(Result))
1785 return TokError("pointer to this type is invalid");
1786 Result = PointerType::getUnqual(Result);
1790 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
1791 case lltok::kw_addrspace: {
1792 if (Result->isLabelTy())
1793 return TokError("basic block pointers are invalid");
1794 if (Result->isVoidTy())
1795 return TokError("pointers to void are invalid; use i8* instead");
1796 if (!PointerType::isValidElementType(Result))
1797 return TokError("pointer to this type is invalid");
1799 if (ParseOptionalAddrSpace(AddrSpace) ||
1800 ParseToken(lltok::star, "expected '*' in address space"))
1803 Result = PointerType::get(Result, AddrSpace);
1807 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1809 if (ParseFunctionType(Result))
1816 /// ParseParameterList
1818 /// ::= '(' Arg (',' Arg)* ')'
1820 /// ::= Type OptionalAttributes Value OptionalAttributes
1821 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1822 PerFunctionState &PFS, bool IsMustTailCall,
1823 bool InVarArgsFunc) {
1824 if (ParseToken(lltok::lparen, "expected '(' in call"))
1827 unsigned AttrIndex = 1;
1828 while (Lex.getKind() != lltok::rparen) {
1829 // If this isn't the first argument, we need a comma.
1830 if (!ArgList.empty() &&
1831 ParseToken(lltok::comma, "expected ',' in argument list"))
1834 // Parse an ellipsis if this is a musttail call in a variadic function.
1835 if (Lex.getKind() == lltok::dotdotdot) {
1836 const char *Msg = "unexpected ellipsis in argument list for ";
1837 if (!IsMustTailCall)
1838 return TokError(Twine(Msg) + "non-musttail call");
1840 return TokError(Twine(Msg) + "musttail call in non-varargs function");
1841 Lex.Lex(); // Lex the '...', it is purely for readability.
1842 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1845 // Parse the argument.
1847 Type *ArgTy = nullptr;
1848 AttrBuilder ArgAttrs;
1850 if (ParseType(ArgTy, ArgLoc))
1853 // Otherwise, handle normal operands.
1854 if (ParseOptionalParamAttrs(ArgAttrs) || ParseValue(ArgTy, V, PFS))
1856 ArgList.push_back(ParamInfo(ArgLoc, V, AttributeSet::get(V->getContext(),
1861 if (IsMustTailCall && InVarArgsFunc)
1862 return TokError("expected '...' at end of argument list for musttail call "
1863 "in varargs function");
1865 Lex.Lex(); // Lex the ')'.
1871 /// ParseArgumentList - Parse the argument list for a function type or function
1873 /// ::= '(' ArgTypeListI ')'
1877 /// ::= ArgTypeList ',' '...'
1878 /// ::= ArgType (',' ArgType)*
1880 bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
1883 assert(Lex.getKind() == lltok::lparen);
1884 Lex.Lex(); // eat the (.
1886 if (Lex.getKind() == lltok::rparen) {
1888 } else if (Lex.getKind() == lltok::dotdotdot) {
1892 LocTy TypeLoc = Lex.getLoc();
1893 Type *ArgTy = nullptr;
1897 if (ParseType(ArgTy) ||
1898 ParseOptionalParamAttrs(Attrs)) return true;
1900 if (ArgTy->isVoidTy())
1901 return Error(TypeLoc, "argument can not have void type");
1903 if (Lex.getKind() == lltok::LocalVar) {
1904 Name = Lex.getStrVal();
1908 if (!FunctionType::isValidArgumentType(ArgTy))
1909 return Error(TypeLoc, "invalid type for function argument");
1911 unsigned AttrIndex = 1;
1912 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1913 AttributeSet::get(ArgTy->getContext(),
1914 AttrIndex++, Attrs), Name));
1916 while (EatIfPresent(lltok::comma)) {
1917 // Handle ... at end of arg list.
1918 if (EatIfPresent(lltok::dotdotdot)) {
1923 // Otherwise must be an argument type.
1924 TypeLoc = Lex.getLoc();
1925 if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
1927 if (ArgTy->isVoidTy())
1928 return Error(TypeLoc, "argument can not have void type");
1930 if (Lex.getKind() == lltok::LocalVar) {
1931 Name = Lex.getStrVal();
1937 if (!ArgTy->isFirstClassType())
1938 return Error(TypeLoc, "invalid type for function argument");
1940 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1941 AttributeSet::get(ArgTy->getContext(),
1942 AttrIndex++, Attrs),
1947 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1950 /// ParseFunctionType
1951 /// ::= Type ArgumentList OptionalAttrs
1952 bool LLParser::ParseFunctionType(Type *&Result) {
1953 assert(Lex.getKind() == lltok::lparen);
1955 if (!FunctionType::isValidReturnType(Result))
1956 return TokError("invalid function return type");
1958 SmallVector<ArgInfo, 8> ArgList;
1960 if (ParseArgumentList(ArgList, isVarArg))
1963 // Reject names on the arguments lists.
1964 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1965 if (!ArgList[i].Name.empty())
1966 return Error(ArgList[i].Loc, "argument name invalid in function type");
1967 if (ArgList[i].Attrs.hasAttributes(i + 1))
1968 return Error(ArgList[i].Loc,
1969 "argument attributes invalid in function type");
1972 SmallVector<Type*, 16> ArgListTy;
1973 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1974 ArgListTy.push_back(ArgList[i].Ty);
1976 Result = FunctionType::get(Result, ArgListTy, isVarArg);
1980 /// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
1982 bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
1983 SmallVector<Type*, 8> Elts;
1984 if (ParseStructBody(Elts)) return true;
1986 Result = StructType::get(Context, Elts, Packed);
1990 /// ParseStructDefinition - Parse a struct in a 'type' definition.
1991 bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
1992 std::pair<Type*, LocTy> &Entry,
1994 // If the type was already defined, diagnose the redefinition.
1995 if (Entry.first && !Entry.second.isValid())
1996 return Error(TypeLoc, "redefinition of type");
1998 // If we have opaque, just return without filling in the definition for the
1999 // struct. This counts as a definition as far as the .ll file goes.
2000 if (EatIfPresent(lltok::kw_opaque)) {
2001 // This type is being defined, so clear the location to indicate this.
2002 Entry.second = SMLoc();
2004 // If this type number has never been uttered, create it.
2006 Entry.first = StructType::create(Context, Name);
2007 ResultTy = Entry.first;
2011 // If the type starts with '<', then it is either a packed struct or a vector.
2012 bool isPacked = EatIfPresent(lltok::less);
2014 // If we don't have a struct, then we have a random type alias, which we
2015 // accept for compatibility with old files. These types are not allowed to be
2016 // forward referenced and not allowed to be recursive.
2017 if (Lex.getKind() != lltok::lbrace) {
2019 return Error(TypeLoc, "forward references to non-struct type");
2023 return ParseArrayVectorType(ResultTy, true);
2024 return ParseType(ResultTy);
2027 // This type is being defined, so clear the location to indicate this.
2028 Entry.second = SMLoc();
2030 // If this type number has never been uttered, create it.
2032 Entry.first = StructType::create(Context, Name);
2034 StructType *STy = cast<StructType>(Entry.first);
2036 SmallVector<Type*, 8> Body;
2037 if (ParseStructBody(Body) ||
2038 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
2041 STy->setBody(Body, isPacked);
2047 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
2050 /// ::= '{' Type (',' Type)* '}'
2051 /// ::= '<' '{' '}' '>'
2052 /// ::= '<' '{' Type (',' Type)* '}' '>'
2053 bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
2054 assert(Lex.getKind() == lltok::lbrace);
2055 Lex.Lex(); // Consume the '{'
2057 // Handle the empty struct.
2058 if (EatIfPresent(lltok::rbrace))
2061 LocTy EltTyLoc = Lex.getLoc();
2063 if (ParseType(Ty)) return true;
2066 if (!StructType::isValidElementType(Ty))
2067 return Error(EltTyLoc, "invalid element type for struct");
2069 while (EatIfPresent(lltok::comma)) {
2070 EltTyLoc = Lex.getLoc();
2071 if (ParseType(Ty)) return true;
2073 if (!StructType::isValidElementType(Ty))
2074 return Error(EltTyLoc, "invalid element type for struct");
2079 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
2082 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
2083 /// token has already been consumed.
2085 /// ::= '[' APSINTVAL 'x' Types ']'
2086 /// ::= '<' APSINTVAL 'x' Types '>'
2087 bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
2088 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
2089 Lex.getAPSIntVal().getBitWidth() > 64)
2090 return TokError("expected number in address space");
2092 LocTy SizeLoc = Lex.getLoc();
2093 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
2096 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
2099 LocTy TypeLoc = Lex.getLoc();
2100 Type *EltTy = nullptr;
2101 if (ParseType(EltTy)) return true;
2103 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
2104 "expected end of sequential type"))
2109 return Error(SizeLoc, "zero element vector is illegal");
2110 if ((unsigned)Size != Size)
2111 return Error(SizeLoc, "size too large for vector");
2112 if (!VectorType::isValidElementType(EltTy))
2113 return Error(TypeLoc, "invalid vector element type");
2114 Result = VectorType::get(EltTy, unsigned(Size));
2116 if (!ArrayType::isValidElementType(EltTy))
2117 return Error(TypeLoc, "invalid array element type");
2118 Result = ArrayType::get(EltTy, Size);
2123 //===----------------------------------------------------------------------===//
2124 // Function Semantic Analysis.
2125 //===----------------------------------------------------------------------===//
2127 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
2129 : P(p), F(f), FunctionNumber(functionNumber) {
2131 // Insert unnamed arguments into the NumberedVals list.
2132 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
2135 NumberedVals.push_back(AI);
2138 LLParser::PerFunctionState::~PerFunctionState() {
2139 // If there were any forward referenced non-basicblock values, delete them.
2140 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
2141 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
2142 if (!isa<BasicBlock>(I->second.first)) {
2143 I->second.first->replaceAllUsesWith(
2144 UndefValue::get(I->second.first->getType()));
2145 delete I->second.first;
2146 I->second.first = nullptr;
2149 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2150 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
2151 if (!isa<BasicBlock>(I->second.first)) {
2152 I->second.first->replaceAllUsesWith(
2153 UndefValue::get(I->second.first->getType()));
2154 delete I->second.first;
2155 I->second.first = nullptr;
2159 bool LLParser::PerFunctionState::FinishFunction() {
2160 if (!ForwardRefVals.empty())
2161 return P.Error(ForwardRefVals.begin()->second.second,
2162 "use of undefined value '%" + ForwardRefVals.begin()->first +
2164 if (!ForwardRefValIDs.empty())
2165 return P.Error(ForwardRefValIDs.begin()->second.second,
2166 "use of undefined value '%" +
2167 Twine(ForwardRefValIDs.begin()->first) + "'");
2172 /// GetVal - Get a value with the specified name or ID, creating a
2173 /// forward reference record if needed. This can return null if the value
2174 /// exists but does not have the right type.
2175 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
2176 Type *Ty, LocTy Loc) {
2177 // Look this name up in the normal function symbol table.
2178 Value *Val = F.getValueSymbolTable().lookup(Name);
2180 // If this is a forward reference for the value, see if we already created a
2181 // forward ref record.
2183 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2184 I = ForwardRefVals.find(Name);
2185 if (I != ForwardRefVals.end())
2186 Val = I->second.first;
2189 // If we have the value in the symbol table or fwd-ref table, return it.
2191 if (Val->getType() == Ty) return Val;
2192 if (Ty->isLabelTy())
2193 P.Error(Loc, "'%" + Name + "' is not a basic block");
2195 P.Error(Loc, "'%" + Name + "' defined with type '" +
2196 getTypeString(Val->getType()) + "'");
2200 // Don't make placeholders with invalid type.
2201 if (!Ty->isFirstClassType()) {
2202 P.Error(Loc, "invalid use of a non-first-class type");
2206 // Otherwise, create a new forward reference for this value and remember it.
2208 if (Ty->isLabelTy())
2209 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2211 FwdVal = new Argument(Ty, Name);
2213 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2217 Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty,
2219 // Look this name up in the normal function symbol table.
2220 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
2222 // If this is a forward reference for the value, see if we already created a
2223 // forward ref record.
2225 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2226 I = ForwardRefValIDs.find(ID);
2227 if (I != ForwardRefValIDs.end())
2228 Val = I->second.first;
2231 // If we have the value in the symbol table or fwd-ref table, return it.
2233 if (Val->getType() == Ty) return Val;
2234 if (Ty->isLabelTy())
2235 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
2237 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
2238 getTypeString(Val->getType()) + "'");
2242 if (!Ty->isFirstClassType()) {
2243 P.Error(Loc, "invalid use of a non-first-class type");
2247 // Otherwise, create a new forward reference for this value and remember it.
2249 if (Ty->isLabelTy())
2250 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2252 FwdVal = new Argument(Ty);
2254 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2258 /// SetInstName - After an instruction is parsed and inserted into its
2259 /// basic block, this installs its name.
2260 bool LLParser::PerFunctionState::SetInstName(int NameID,
2261 const std::string &NameStr,
2262 LocTy NameLoc, Instruction *Inst) {
2263 // If this instruction has void type, it cannot have a name or ID specified.
2264 if (Inst->getType()->isVoidTy()) {
2265 if (NameID != -1 || !NameStr.empty())
2266 return P.Error(NameLoc, "instructions returning void cannot have a name");
2270 // If this was a numbered instruction, verify that the instruction is the
2271 // expected value and resolve any forward references.
2272 if (NameStr.empty()) {
2273 // If neither a name nor an ID was specified, just use the next ID.
2275 NameID = NumberedVals.size();
2277 if (unsigned(NameID) != NumberedVals.size())
2278 return P.Error(NameLoc, "instruction expected to be numbered '%" +
2279 Twine(NumberedVals.size()) + "'");
2281 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
2282 ForwardRefValIDs.find(NameID);
2283 if (FI != ForwardRefValIDs.end()) {
2284 if (FI->second.first->getType() != Inst->getType())
2285 return P.Error(NameLoc, "instruction forward referenced with type '" +
2286 getTypeString(FI->second.first->getType()) + "'");
2287 FI->second.first->replaceAllUsesWith(Inst);
2288 delete FI->second.first;
2289 ForwardRefValIDs.erase(FI);
2292 NumberedVals.push_back(Inst);
2296 // Otherwise, the instruction had a name. Resolve forward refs and set it.
2297 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2298 FI = ForwardRefVals.find(NameStr);
2299 if (FI != ForwardRefVals.end()) {
2300 if (FI->second.first->getType() != Inst->getType())
2301 return P.Error(NameLoc, "instruction forward referenced with type '" +
2302 getTypeString(FI->second.first->getType()) + "'");
2303 FI->second.first->replaceAllUsesWith(Inst);
2304 delete FI->second.first;
2305 ForwardRefVals.erase(FI);
2308 // Set the name on the instruction.
2309 Inst->setName(NameStr);
2311 if (Inst->getName() != NameStr)
2312 return P.Error(NameLoc, "multiple definition of local value named '" +
2317 /// GetBB - Get a basic block with the specified name or ID, creating a
2318 /// forward reference record if needed.
2319 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2321 return cast_or_null<BasicBlock>(GetVal(Name,
2322 Type::getLabelTy(F.getContext()), Loc));
2325 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2326 return cast_or_null<BasicBlock>(GetVal(ID,
2327 Type::getLabelTy(F.getContext()), Loc));
2330 /// DefineBB - Define the specified basic block, which is either named or
2331 /// unnamed. If there is an error, this returns null otherwise it returns
2332 /// the block being defined.
2333 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2337 BB = GetBB(NumberedVals.size(), Loc);
2339 BB = GetBB(Name, Loc);
2340 if (!BB) return nullptr; // Already diagnosed error.
2342 // Move the block to the end of the function. Forward ref'd blocks are
2343 // inserted wherever they happen to be referenced.
2344 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2346 // Remove the block from forward ref sets.
2348 ForwardRefValIDs.erase(NumberedVals.size());
2349 NumberedVals.push_back(BB);
2351 // BB forward references are already in the function symbol table.
2352 ForwardRefVals.erase(Name);
2358 //===----------------------------------------------------------------------===//
2360 //===----------------------------------------------------------------------===//
2362 /// ParseValID - Parse an abstract value that doesn't necessarily have a
2363 /// type implied. For example, if we parse "4" we don't know what integer type
2364 /// it has. The value will later be combined with its type and checked for
2365 /// sanity. PFS is used to convert function-local operands of metadata (since
2366 /// metadata operands are not just parsed here but also converted to values).
2367 /// PFS can be null when we are not parsing metadata values inside a function.
2368 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2369 ID.Loc = Lex.getLoc();
2370 switch (Lex.getKind()) {
2371 default: return TokError("expected value token");
2372 case lltok::GlobalID: // @42
2373 ID.UIntVal = Lex.getUIntVal();
2374 ID.Kind = ValID::t_GlobalID;
2376 case lltok::GlobalVar: // @foo
2377 ID.StrVal = Lex.getStrVal();
2378 ID.Kind = ValID::t_GlobalName;
2380 case lltok::LocalVarID: // %42
2381 ID.UIntVal = Lex.getUIntVal();
2382 ID.Kind = ValID::t_LocalID;
2384 case lltok::LocalVar: // %foo
2385 ID.StrVal = Lex.getStrVal();
2386 ID.Kind = ValID::t_LocalName;
2388 case lltok::exclaim: // !42, !{...}, or !"foo"
2389 return ParseMetadataValue(ID, PFS);
2391 ID.APSIntVal = Lex.getAPSIntVal();
2392 ID.Kind = ValID::t_APSInt;
2394 case lltok::APFloat:
2395 ID.APFloatVal = Lex.getAPFloatVal();
2396 ID.Kind = ValID::t_APFloat;
2398 case lltok::kw_true:
2399 ID.ConstantVal = ConstantInt::getTrue(Context);
2400 ID.Kind = ValID::t_Constant;
2402 case lltok::kw_false:
2403 ID.ConstantVal = ConstantInt::getFalse(Context);
2404 ID.Kind = ValID::t_Constant;
2406 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2407 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2408 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2410 case lltok::lbrace: {
2411 // ValID ::= '{' ConstVector '}'
2413 SmallVector<Constant*, 16> Elts;
2414 if (ParseGlobalValueVector(Elts) ||
2415 ParseToken(lltok::rbrace, "expected end of struct constant"))
2418 ID.ConstantStructElts = new Constant*[Elts.size()];
2419 ID.UIntVal = Elts.size();
2420 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2421 ID.Kind = ValID::t_ConstantStruct;
2425 // ValID ::= '<' ConstVector '>' --> Vector.
2426 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2428 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2430 SmallVector<Constant*, 16> Elts;
2431 LocTy FirstEltLoc = Lex.getLoc();
2432 if (ParseGlobalValueVector(Elts) ||
2434 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2435 ParseToken(lltok::greater, "expected end of constant"))
2438 if (isPackedStruct) {
2439 ID.ConstantStructElts = new Constant*[Elts.size()];
2440 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2441 ID.UIntVal = Elts.size();
2442 ID.Kind = ValID::t_PackedConstantStruct;
2447 return Error(ID.Loc, "constant vector must not be empty");
2449 if (!Elts[0]->getType()->isIntegerTy() &&
2450 !Elts[0]->getType()->isFloatingPointTy() &&
2451 !Elts[0]->getType()->isPointerTy())
2452 return Error(FirstEltLoc,
2453 "vector elements must have integer, pointer or floating point type");
2455 // Verify that all the vector elements have the same type.
2456 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2457 if (Elts[i]->getType() != Elts[0]->getType())
2458 return Error(FirstEltLoc,
2459 "vector element #" + Twine(i) +
2460 " is not of type '" + getTypeString(Elts[0]->getType()));
2462 ID.ConstantVal = ConstantVector::get(Elts);
2463 ID.Kind = ValID::t_Constant;
2466 case lltok::lsquare: { // Array Constant
2468 SmallVector<Constant*, 16> Elts;
2469 LocTy FirstEltLoc = Lex.getLoc();
2470 if (ParseGlobalValueVector(Elts) ||
2471 ParseToken(lltok::rsquare, "expected end of array constant"))
2474 // Handle empty element.
2476 // Use undef instead of an array because it's inconvenient to determine
2477 // the element type at this point, there being no elements to examine.
2478 ID.Kind = ValID::t_EmptyArray;
2482 if (!Elts[0]->getType()->isFirstClassType())
2483 return Error(FirstEltLoc, "invalid array element type: " +
2484 getTypeString(Elts[0]->getType()));
2486 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2488 // Verify all elements are correct type!
2489 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2490 if (Elts[i]->getType() != Elts[0]->getType())
2491 return Error(FirstEltLoc,
2492 "array element #" + Twine(i) +
2493 " is not of type '" + getTypeString(Elts[0]->getType()));
2496 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2497 ID.Kind = ValID::t_Constant;
2500 case lltok::kw_c: // c "foo"
2502 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2504 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2505 ID.Kind = ValID::t_Constant;
2508 case lltok::kw_asm: {
2509 // ValID ::= 'asm' SideEffect? AlignStack? IntelDialect? STRINGCONSTANT ','
2511 bool HasSideEffect, AlignStack, AsmDialect;
2513 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2514 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2515 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2516 ParseStringConstant(ID.StrVal) ||
2517 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2518 ParseToken(lltok::StringConstant, "expected constraint string"))
2520 ID.StrVal2 = Lex.getStrVal();
2521 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2522 (unsigned(AsmDialect)<<2);
2523 ID.Kind = ValID::t_InlineAsm;
2527 case lltok::kw_blockaddress: {
2528 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2533 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2535 ParseToken(lltok::comma, "expected comma in block address expression")||
2536 ParseValID(Label) ||
2537 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2540 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2541 return Error(Fn.Loc, "expected function name in blockaddress");
2542 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2543 return Error(Label.Loc, "expected basic block name in blockaddress");
2545 // Try to find the function (but skip it if it's forward-referenced).
2546 GlobalValue *GV = nullptr;
2547 if (Fn.Kind == ValID::t_GlobalID) {
2548 if (Fn.UIntVal < NumberedVals.size())
2549 GV = NumberedVals[Fn.UIntVal];
2550 } else if (!ForwardRefVals.count(Fn.StrVal)) {
2551 GV = M->getNamedValue(Fn.StrVal);
2553 Function *F = nullptr;
2555 // Confirm that it's actually a function with a definition.
2556 if (!isa<Function>(GV))
2557 return Error(Fn.Loc, "expected function name in blockaddress");
2558 F = cast<Function>(GV);
2559 if (F->isDeclaration())
2560 return Error(Fn.Loc, "cannot take blockaddress inside a declaration");
2564 // Make a global variable as a placeholder for this reference.
2565 GlobalValue *&FwdRef = ForwardRefBlockAddresses[Fn][Label];
2567 FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context), false,
2568 GlobalValue::InternalLinkage, nullptr, "");
2569 ID.ConstantVal = FwdRef;
2570 ID.Kind = ValID::t_Constant;
2574 // We found the function; now find the basic block. Don't use PFS, since we
2575 // might be inside a constant expression.
2577 if (BlockAddressPFS && F == &BlockAddressPFS->getFunction()) {
2578 if (Label.Kind == ValID::t_LocalID)
2579 BB = BlockAddressPFS->GetBB(Label.UIntVal, Label.Loc);
2581 BB = BlockAddressPFS->GetBB(Label.StrVal, Label.Loc);
2583 return Error(Label.Loc, "referenced value is not a basic block");
2585 if (Label.Kind == ValID::t_LocalID)
2586 return Error(Label.Loc, "cannot take address of numeric label after "
2587 "the function is defined");
2588 BB = dyn_cast_or_null<BasicBlock>(
2589 F->getValueSymbolTable().lookup(Label.StrVal));
2591 return Error(Label.Loc, "referenced value is not a basic block");
2594 ID.ConstantVal = BlockAddress::get(F, BB);
2595 ID.Kind = ValID::t_Constant;
2599 case lltok::kw_trunc:
2600 case lltok::kw_zext:
2601 case lltok::kw_sext:
2602 case lltok::kw_fptrunc:
2603 case lltok::kw_fpext:
2604 case lltok::kw_bitcast:
2605 case lltok::kw_addrspacecast:
2606 case lltok::kw_uitofp:
2607 case lltok::kw_sitofp:
2608 case lltok::kw_fptoui:
2609 case lltok::kw_fptosi:
2610 case lltok::kw_inttoptr:
2611 case lltok::kw_ptrtoint: {
2612 unsigned Opc = Lex.getUIntVal();
2613 Type *DestTy = nullptr;
2616 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2617 ParseGlobalTypeAndValue(SrcVal) ||
2618 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2619 ParseType(DestTy) ||
2620 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2622 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2623 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2624 getTypeString(SrcVal->getType()) + "' to '" +
2625 getTypeString(DestTy) + "'");
2626 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2628 ID.Kind = ValID::t_Constant;
2631 case lltok::kw_extractvalue: {
2634 SmallVector<unsigned, 4> Indices;
2635 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2636 ParseGlobalTypeAndValue(Val) ||
2637 ParseIndexList(Indices) ||
2638 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2641 if (!Val->getType()->isAggregateType())
2642 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2643 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
2644 return Error(ID.Loc, "invalid indices for extractvalue");
2645 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
2646 ID.Kind = ValID::t_Constant;
2649 case lltok::kw_insertvalue: {
2651 Constant *Val0, *Val1;
2652 SmallVector<unsigned, 4> Indices;
2653 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2654 ParseGlobalTypeAndValue(Val0) ||
2655 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2656 ParseGlobalTypeAndValue(Val1) ||
2657 ParseIndexList(Indices) ||
2658 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2660 if (!Val0->getType()->isAggregateType())
2661 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2662 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
2663 return Error(ID.Loc, "invalid indices for insertvalue");
2664 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
2665 ID.Kind = ValID::t_Constant;
2668 case lltok::kw_icmp:
2669 case lltok::kw_fcmp: {
2670 unsigned PredVal, Opc = Lex.getUIntVal();
2671 Constant *Val0, *Val1;
2673 if (ParseCmpPredicate(PredVal, Opc) ||
2674 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2675 ParseGlobalTypeAndValue(Val0) ||
2676 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2677 ParseGlobalTypeAndValue(Val1) ||
2678 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2681 if (Val0->getType() != Val1->getType())
2682 return Error(ID.Loc, "compare operands must have the same type");
2684 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2686 if (Opc == Instruction::FCmp) {
2687 if (!Val0->getType()->isFPOrFPVectorTy())
2688 return Error(ID.Loc, "fcmp requires floating point operands");
2689 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2691 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2692 if (!Val0->getType()->isIntOrIntVectorTy() &&
2693 !Val0->getType()->getScalarType()->isPointerTy())
2694 return Error(ID.Loc, "icmp requires pointer or integer operands");
2695 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2697 ID.Kind = ValID::t_Constant;
2701 // Binary Operators.
2703 case lltok::kw_fadd:
2705 case lltok::kw_fsub:
2707 case lltok::kw_fmul:
2708 case lltok::kw_udiv:
2709 case lltok::kw_sdiv:
2710 case lltok::kw_fdiv:
2711 case lltok::kw_urem:
2712 case lltok::kw_srem:
2713 case lltok::kw_frem:
2715 case lltok::kw_lshr:
2716 case lltok::kw_ashr: {
2720 unsigned Opc = Lex.getUIntVal();
2721 Constant *Val0, *Val1;
2723 LocTy ModifierLoc = Lex.getLoc();
2724 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
2725 Opc == Instruction::Mul || Opc == Instruction::Shl) {
2726 if (EatIfPresent(lltok::kw_nuw))
2728 if (EatIfPresent(lltok::kw_nsw)) {
2730 if (EatIfPresent(lltok::kw_nuw))
2733 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
2734 Opc == Instruction::LShr || Opc == Instruction::AShr) {
2735 if (EatIfPresent(lltok::kw_exact))
2738 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2739 ParseGlobalTypeAndValue(Val0) ||
2740 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2741 ParseGlobalTypeAndValue(Val1) ||
2742 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2744 if (Val0->getType() != Val1->getType())
2745 return Error(ID.Loc, "operands of constexpr must have same type");
2746 if (!Val0->getType()->isIntOrIntVectorTy()) {
2748 return Error(ModifierLoc, "nuw only applies to integer operations");
2750 return Error(ModifierLoc, "nsw only applies to integer operations");
2752 // Check that the type is valid for the operator.
2754 case Instruction::Add:
2755 case Instruction::Sub:
2756 case Instruction::Mul:
2757 case Instruction::UDiv:
2758 case Instruction::SDiv:
2759 case Instruction::URem:
2760 case Instruction::SRem:
2761 case Instruction::Shl:
2762 case Instruction::AShr:
2763 case Instruction::LShr:
2764 if (!Val0->getType()->isIntOrIntVectorTy())
2765 return Error(ID.Loc, "constexpr requires integer operands");
2767 case Instruction::FAdd:
2768 case Instruction::FSub:
2769 case Instruction::FMul:
2770 case Instruction::FDiv:
2771 case Instruction::FRem:
2772 if (!Val0->getType()->isFPOrFPVectorTy())
2773 return Error(ID.Loc, "constexpr requires fp operands");
2775 default: llvm_unreachable("Unknown binary operator!");
2778 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2779 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2780 if (Exact) Flags |= PossiblyExactOperator::IsExact;
2781 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2783 ID.Kind = ValID::t_Constant;
2787 // Logical Operations
2790 case lltok::kw_xor: {
2791 unsigned Opc = Lex.getUIntVal();
2792 Constant *Val0, *Val1;
2794 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2795 ParseGlobalTypeAndValue(Val0) ||
2796 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2797 ParseGlobalTypeAndValue(Val1) ||
2798 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2800 if (Val0->getType() != Val1->getType())
2801 return Error(ID.Loc, "operands of constexpr must have same type");
2802 if (!Val0->getType()->isIntOrIntVectorTy())
2803 return Error(ID.Loc,
2804 "constexpr requires integer or integer vector operands");
2805 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2806 ID.Kind = ValID::t_Constant;
2810 case lltok::kw_getelementptr:
2811 case lltok::kw_shufflevector:
2812 case lltok::kw_insertelement:
2813 case lltok::kw_extractelement:
2814 case lltok::kw_select: {
2815 unsigned Opc = Lex.getUIntVal();
2816 SmallVector<Constant*, 16> Elts;
2817 bool InBounds = false;
2819 if (Opc == Instruction::GetElementPtr)
2820 InBounds = EatIfPresent(lltok::kw_inbounds);
2821 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2822 ParseGlobalValueVector(Elts) ||
2823 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2826 if (Opc == Instruction::GetElementPtr) {
2827 if (Elts.size() == 0 ||
2828 !Elts[0]->getType()->getScalarType()->isPointerTy())
2829 return Error(ID.Loc, "getelementptr requires pointer operand");
2831 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
2832 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(), Indices))
2833 return Error(ID.Loc, "invalid indices for getelementptr");
2834 ID.ConstantVal = ConstantExpr::getGetElementPtr(Elts[0], Indices,
2836 } else if (Opc == Instruction::Select) {
2837 if (Elts.size() != 3)
2838 return Error(ID.Loc, "expected three operands to select");
2839 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2841 return Error(ID.Loc, Reason);
2842 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2843 } else if (Opc == Instruction::ShuffleVector) {
2844 if (Elts.size() != 3)
2845 return Error(ID.Loc, "expected three operands to shufflevector");
2846 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2847 return Error(ID.Loc, "invalid operands to shufflevector");
2849 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2850 } else if (Opc == Instruction::ExtractElement) {
2851 if (Elts.size() != 2)
2852 return Error(ID.Loc, "expected two operands to extractelement");
2853 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2854 return Error(ID.Loc, "invalid extractelement operands");
2855 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2857 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2858 if (Elts.size() != 3)
2859 return Error(ID.Loc, "expected three operands to insertelement");
2860 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2861 return Error(ID.Loc, "invalid insertelement operands");
2863 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2866 ID.Kind = ValID::t_Constant;
2875 /// ParseGlobalValue - Parse a global value with the specified type.
2876 bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
2880 bool Parsed = ParseValID(ID) ||
2881 ConvertValIDToValue(Ty, ID, V, nullptr);
2882 if (V && !(C = dyn_cast<Constant>(V)))
2883 return Error(ID.Loc, "global values must be constants");
2887 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2889 return ParseType(Ty) ||
2890 ParseGlobalValue(Ty, V);
2893 bool LLParser::parseOptionalComdat(Comdat *&C) {
2895 if (!EatIfPresent(lltok::kw_comdat))
2897 if (Lex.getKind() != lltok::ComdatVar)
2898 return TokError("expected comdat variable");
2899 LocTy Loc = Lex.getLoc();
2900 StringRef Name = Lex.getStrVal();
2901 C = getComdat(Name, Loc);
2906 /// ParseGlobalValueVector
2908 /// ::= TypeAndValue (',' TypeAndValue)*
2909 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant *> &Elts) {
2911 if (Lex.getKind() == lltok::rbrace ||
2912 Lex.getKind() == lltok::rsquare ||
2913 Lex.getKind() == lltok::greater ||
2914 Lex.getKind() == lltok::rparen)
2918 if (ParseGlobalTypeAndValue(C)) return true;
2921 while (EatIfPresent(lltok::comma)) {
2922 if (ParseGlobalTypeAndValue(C)) return true;
2929 bool LLParser::ParseMetadataListValue(ValID &ID, PerFunctionState *PFS) {
2930 assert(Lex.getKind() == lltok::lbrace);
2933 SmallVector<Value*, 16> Elts;
2934 if (ParseMDNodeVector(Elts, PFS) ||
2935 ParseToken(lltok::rbrace, "expected end of metadata node"))
2938 ID.MDNodeVal = MDNode::get(Context, Elts);
2939 ID.Kind = ValID::t_MDNode;
2943 /// ParseMetadataValue
2947 bool LLParser::ParseMetadataValue(ValID &ID, PerFunctionState *PFS) {
2948 assert(Lex.getKind() == lltok::exclaim);
2953 if (Lex.getKind() == lltok::lbrace)
2954 return ParseMetadataListValue(ID, PFS);
2956 // Standalone metadata reference
2958 if (Lex.getKind() == lltok::APSInt) {
2959 if (ParseMDNodeID(ID.MDNodeVal)) return true;
2960 ID.Kind = ValID::t_MDNode;
2965 // ::= '!' STRINGCONSTANT
2966 if (ParseMDString(ID.MDStringVal)) return true;
2967 ID.Kind = ValID::t_MDString;
2972 //===----------------------------------------------------------------------===//
2973 // Function Parsing.
2974 //===----------------------------------------------------------------------===//
2976 bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
2977 PerFunctionState *PFS) {
2978 if (Ty->isFunctionTy())
2979 return Error(ID.Loc, "functions are not values, refer to them as pointers");
2982 case ValID::t_LocalID:
2983 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2984 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
2985 return V == nullptr;
2986 case ValID::t_LocalName:
2987 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2988 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
2989 return V == nullptr;
2990 case ValID::t_InlineAsm: {
2991 PointerType *PTy = dyn_cast<PointerType>(Ty);
2993 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : nullptr;
2994 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
2995 return Error(ID.Loc, "invalid type for inline asm constraint string");
2996 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1,
2997 (ID.UIntVal>>1)&1, (InlineAsm::AsmDialect(ID.UIntVal>>2)));
3000 case ValID::t_MDNode:
3001 if (!Ty->isMetadataTy())
3002 return Error(ID.Loc, "metadata value must have metadata type");
3005 case ValID::t_MDString:
3006 if (!Ty->isMetadataTy())
3007 return Error(ID.Loc, "metadata value must have metadata type");
3010 case ValID::t_GlobalName:
3011 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
3012 return V == nullptr;
3013 case ValID::t_GlobalID:
3014 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
3015 return V == nullptr;
3016 case ValID::t_APSInt:
3017 if (!Ty->isIntegerTy())
3018 return Error(ID.Loc, "integer constant must have integer type");
3019 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
3020 V = ConstantInt::get(Context, ID.APSIntVal);
3022 case ValID::t_APFloat:
3023 if (!Ty->isFloatingPointTy() ||
3024 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
3025 return Error(ID.Loc, "floating point constant invalid for type");
3027 // The lexer has no type info, so builds all half, float, and double FP
3028 // constants as double. Fix this here. Long double does not need this.
3029 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble) {
3032 ID.APFloatVal.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven,
3034 else if (Ty->isFloatTy())
3035 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
3038 V = ConstantFP::get(Context, ID.APFloatVal);
3040 if (V->getType() != Ty)
3041 return Error(ID.Loc, "floating point constant does not have type '" +
3042 getTypeString(Ty) + "'");
3046 if (!Ty->isPointerTy())
3047 return Error(ID.Loc, "null must be a pointer type");
3048 V = ConstantPointerNull::get(cast<PointerType>(Ty));
3050 case ValID::t_Undef:
3051 // FIXME: LabelTy should not be a first-class type.
3052 if (!Ty->isFirstClassType() || Ty->isLabelTy())
3053 return Error(ID.Loc, "invalid type for undef constant");
3054 V = UndefValue::get(Ty);
3056 case ValID::t_EmptyArray:
3057 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
3058 return Error(ID.Loc, "invalid empty array initializer");
3059 V = UndefValue::get(Ty);
3062 // FIXME: LabelTy should not be a first-class type.
3063 if (!Ty->isFirstClassType() || Ty->isLabelTy())
3064 return Error(ID.Loc, "invalid type for null constant");
3065 V = Constant::getNullValue(Ty);
3067 case ValID::t_Constant:
3068 if (ID.ConstantVal->getType() != Ty)
3069 return Error(ID.Loc, "constant expression type mismatch");
3073 case ValID::t_ConstantStruct:
3074 case ValID::t_PackedConstantStruct:
3075 if (StructType *ST = dyn_cast<StructType>(Ty)) {
3076 if (ST->getNumElements() != ID.UIntVal)
3077 return Error(ID.Loc,
3078 "initializer with struct type has wrong # elements");
3079 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
3080 return Error(ID.Loc, "packed'ness of initializer and type don't match");
3082 // Verify that the elements are compatible with the structtype.
3083 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
3084 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
3085 return Error(ID.Loc, "element " + Twine(i) +
3086 " of struct initializer doesn't match struct element type");
3088 V = ConstantStruct::get(ST, makeArrayRef(ID.ConstantStructElts,
3091 return Error(ID.Loc, "constant expression type mismatch");
3094 llvm_unreachable("Invalid ValID");
3097 bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS) {
3100 return ParseValID(ID, PFS) ||
3101 ConvertValIDToValue(Ty, ID, V, PFS);
3104 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
3106 return ParseType(Ty) ||
3107 ParseValue(Ty, V, PFS);
3110 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
3111 PerFunctionState &PFS) {
3114 if (ParseTypeAndValue(V, PFS)) return true;
3115 if (!isa<BasicBlock>(V))
3116 return Error(Loc, "expected a basic block");
3117 BB = cast<BasicBlock>(V);
3123 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
3124 /// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
3125 /// OptionalAlign OptGC OptionalPrefix OptionalPrologue
3126 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
3127 // Parse the linkage.
3128 LocTy LinkageLoc = Lex.getLoc();
3131 unsigned Visibility;
3132 unsigned DLLStorageClass;
3133 AttrBuilder RetAttrs;
3135 Type *RetType = nullptr;
3136 LocTy RetTypeLoc = Lex.getLoc();
3137 if (ParseOptionalLinkage(Linkage) ||
3138 ParseOptionalVisibility(Visibility) ||
3139 ParseOptionalDLLStorageClass(DLLStorageClass) ||
3140 ParseOptionalCallingConv(CC) ||
3141 ParseOptionalReturnAttrs(RetAttrs) ||
3142 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
3145 // Verify that the linkage is ok.
3146 switch ((GlobalValue::LinkageTypes)Linkage) {
3147 case GlobalValue::ExternalLinkage:
3148 break; // always ok.
3149 case GlobalValue::ExternalWeakLinkage:
3151 return Error(LinkageLoc, "invalid linkage for function definition");
3153 case GlobalValue::PrivateLinkage:
3154 case GlobalValue::InternalLinkage:
3155 case GlobalValue::AvailableExternallyLinkage:
3156 case GlobalValue::LinkOnceAnyLinkage:
3157 case GlobalValue::LinkOnceODRLinkage:
3158 case GlobalValue::WeakAnyLinkage:
3159 case GlobalValue::WeakODRLinkage:
3161 return Error(LinkageLoc, "invalid linkage for function declaration");
3163 case GlobalValue::AppendingLinkage:
3164 case GlobalValue::CommonLinkage:
3165 return Error(LinkageLoc, "invalid function linkage type");
3168 if (!isValidVisibilityForLinkage(Visibility, Linkage))
3169 return Error(LinkageLoc,
3170 "symbol with local linkage must have default visibility");
3172 if (!FunctionType::isValidReturnType(RetType))
3173 return Error(RetTypeLoc, "invalid function return type");
3175 LocTy NameLoc = Lex.getLoc();
3177 std::string FunctionName;
3178 if (Lex.getKind() == lltok::GlobalVar) {
3179 FunctionName = Lex.getStrVal();
3180 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
3181 unsigned NameID = Lex.getUIntVal();
3183 if (NameID != NumberedVals.size())
3184 return TokError("function expected to be numbered '%" +
3185 Twine(NumberedVals.size()) + "'");
3187 return TokError("expected function name");
3192 if (Lex.getKind() != lltok::lparen)
3193 return TokError("expected '(' in function argument list");
3195 SmallVector<ArgInfo, 8> ArgList;
3197 AttrBuilder FuncAttrs;
3198 std::vector<unsigned> FwdRefAttrGrps;
3200 std::string Section;
3204 LocTy UnnamedAddrLoc;
3205 Constant *Prefix = nullptr;
3206 Constant *Prologue = nullptr;
3209 if (ParseArgumentList(ArgList, isVarArg) ||
3210 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
3212 ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false,
3214 (EatIfPresent(lltok::kw_section) &&
3215 ParseStringConstant(Section)) ||
3216 parseOptionalComdat(C) ||
3217 ParseOptionalAlignment(Alignment) ||
3218 (EatIfPresent(lltok::kw_gc) &&
3219 ParseStringConstant(GC)) ||
3220 (EatIfPresent(lltok::kw_prefix) &&
3221 ParseGlobalTypeAndValue(Prefix)) ||
3222 (EatIfPresent(lltok::kw_prologue) &&
3223 ParseGlobalTypeAndValue(Prologue)))
3226 if (FuncAttrs.contains(Attribute::Builtin))
3227 return Error(BuiltinLoc, "'builtin' attribute not valid on function");
3229 // If the alignment was parsed as an attribute, move to the alignment field.
3230 if (FuncAttrs.hasAlignmentAttr()) {
3231 Alignment = FuncAttrs.getAlignment();
3232 FuncAttrs.removeAttribute(Attribute::Alignment);
3235 // Okay, if we got here, the function is syntactically valid. Convert types
3236 // and do semantic checks.
3237 std::vector<Type*> ParamTypeList;
3238 SmallVector<AttributeSet, 8> Attrs;
3240 if (RetAttrs.hasAttributes())
3241 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3242 AttributeSet::ReturnIndex,
3245 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3246 ParamTypeList.push_back(ArgList[i].Ty);
3247 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
3248 AttrBuilder B(ArgList[i].Attrs, i + 1);
3249 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
3253 if (FuncAttrs.hasAttributes())
3254 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3255 AttributeSet::FunctionIndex,
3258 AttributeSet PAL = AttributeSet::get(Context, Attrs);
3260 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
3261 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
3264 FunctionType::get(RetType, ParamTypeList, isVarArg);
3265 PointerType *PFT = PointerType::getUnqual(FT);
3268 if (!FunctionName.empty()) {
3269 // If this was a definition of a forward reference, remove the definition
3270 // from the forward reference table and fill in the forward ref.
3271 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
3272 ForwardRefVals.find(FunctionName);
3273 if (FRVI != ForwardRefVals.end()) {
3274 Fn = M->getFunction(FunctionName);
3276 return Error(FRVI->second.second, "invalid forward reference to "
3277 "function as global value!");
3278 if (Fn->getType() != PFT)
3279 return Error(FRVI->second.second, "invalid forward reference to "
3280 "function '" + FunctionName + "' with wrong type!");
3282 ForwardRefVals.erase(FRVI);
3283 } else if ((Fn = M->getFunction(FunctionName))) {
3284 // Reject redefinitions.
3285 return Error(NameLoc, "invalid redefinition of function '" +
3286 FunctionName + "'");
3287 } else if (M->getNamedValue(FunctionName)) {
3288 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
3292 // If this is a definition of a forward referenced function, make sure the
3294 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
3295 = ForwardRefValIDs.find(NumberedVals.size());
3296 if (I != ForwardRefValIDs.end()) {
3297 Fn = cast<Function>(I->second.first);
3298 if (Fn->getType() != PFT)
3299 return Error(NameLoc, "type of definition and forward reference of '@" +
3300 Twine(NumberedVals.size()) + "' disagree");
3301 ForwardRefValIDs.erase(I);
3306 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
3307 else // Move the forward-reference to the correct spot in the module.
3308 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
3310 if (FunctionName.empty())
3311 NumberedVals.push_back(Fn);
3313 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
3314 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
3315 Fn->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
3316 Fn->setCallingConv(CC);
3317 Fn->setAttributes(PAL);
3318 Fn->setUnnamedAddr(UnnamedAddr);
3319 Fn->setAlignment(Alignment);
3320 Fn->setSection(Section);
3322 if (!GC.empty()) Fn->setGC(GC.c_str());
3323 Fn->setPrefixData(Prefix);
3324 Fn->setPrologueData(Prologue);
3325 ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
3327 // Add all of the arguments we parsed to the function.
3328 Function::arg_iterator ArgIt = Fn->arg_begin();
3329 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
3330 // If the argument has a name, insert it into the argument symbol table.
3331 if (ArgList[i].Name.empty()) continue;
3333 // Set the name, if it conflicted, it will be auto-renamed.
3334 ArgIt->setName(ArgList[i].Name);
3336 if (ArgIt->getName() != ArgList[i].Name)
3337 return Error(ArgList[i].Loc, "redefinition of argument '%" +
3338 ArgList[i].Name + "'");
3344 // Check the declaration has no block address forward references.
3346 if (FunctionName.empty()) {
3347 ID.Kind = ValID::t_GlobalID;
3348 ID.UIntVal = NumberedVals.size() - 1;
3350 ID.Kind = ValID::t_GlobalName;
3351 ID.StrVal = FunctionName;
3353 auto Blocks = ForwardRefBlockAddresses.find(ID);
3354 if (Blocks != ForwardRefBlockAddresses.end())
3355 return Error(Blocks->first.Loc,
3356 "cannot take blockaddress inside a declaration");
3360 bool LLParser::PerFunctionState::resolveForwardRefBlockAddresses() {
3362 if (FunctionNumber == -1) {
3363 ID.Kind = ValID::t_GlobalName;
3364 ID.StrVal = F.getName();
3366 ID.Kind = ValID::t_GlobalID;
3367 ID.UIntVal = FunctionNumber;
3370 auto Blocks = P.ForwardRefBlockAddresses.find(ID);
3371 if (Blocks == P.ForwardRefBlockAddresses.end())
3374 for (const auto &I : Blocks->second) {
3375 const ValID &BBID = I.first;
3376 GlobalValue *GV = I.second;
3378 assert((BBID.Kind == ValID::t_LocalID || BBID.Kind == ValID::t_LocalName) &&
3379 "Expected local id or name");
3381 if (BBID.Kind == ValID::t_LocalName)
3382 BB = GetBB(BBID.StrVal, BBID.Loc);
3384 BB = GetBB(BBID.UIntVal, BBID.Loc);
3386 return P.Error(BBID.Loc, "referenced value is not a basic block");
3388 GV->replaceAllUsesWith(BlockAddress::get(&F, BB));
3389 GV->eraseFromParent();
3392 P.ForwardRefBlockAddresses.erase(Blocks);
3396 /// ParseFunctionBody
3397 /// ::= '{' BasicBlock+ UseListOrderDirective* '}'
3398 bool LLParser::ParseFunctionBody(Function &Fn) {
3399 if (Lex.getKind() != lltok::lbrace)
3400 return TokError("expected '{' in function body");
3401 Lex.Lex(); // eat the {.
3403 int FunctionNumber = -1;
3404 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
3406 PerFunctionState PFS(*this, Fn, FunctionNumber);
3408 // Resolve block addresses and allow basic blocks to be forward-declared
3409 // within this function.
3410 if (PFS.resolveForwardRefBlockAddresses())
3412 SaveAndRestore<PerFunctionState *> ScopeExit(BlockAddressPFS, &PFS);
3414 // We need at least one basic block.
3415 if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_uselistorder)
3416 return TokError("function body requires at least one basic block");
3418 while (Lex.getKind() != lltok::rbrace &&
3419 Lex.getKind() != lltok::kw_uselistorder)
3420 if (ParseBasicBlock(PFS)) return true;
3422 while (Lex.getKind() != lltok::rbrace)
3423 if (ParseUseListOrder(&PFS))
3429 // Verify function is ok.
3430 return PFS.FinishFunction();
3434 /// ::= LabelStr? Instruction*
3435 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
3436 // If this basic block starts out with a name, remember it.
3438 LocTy NameLoc = Lex.getLoc();
3439 if (Lex.getKind() == lltok::LabelStr) {
3440 Name = Lex.getStrVal();
3444 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
3445 if (!BB) return true;
3447 std::string NameStr;
3449 // Parse the instructions in this block until we get a terminator.
3452 // This instruction may have three possibilities for a name: a) none
3453 // specified, b) name specified "%foo =", c) number specified: "%4 =".
3454 LocTy NameLoc = Lex.getLoc();
3458 if (Lex.getKind() == lltok::LocalVarID) {
3459 NameID = Lex.getUIntVal();
3461 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
3463 } else if (Lex.getKind() == lltok::LocalVar) {
3464 NameStr = Lex.getStrVal();
3466 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
3470 switch (ParseInstruction(Inst, BB, PFS)) {
3471 default: llvm_unreachable("Unknown ParseInstruction result!");
3472 case InstError: return true;
3474 BB->getInstList().push_back(Inst);
3476 // With a normal result, we check to see if the instruction is followed by
3477 // a comma and metadata.
3478 if (EatIfPresent(lltok::comma))
3479 if (ParseInstructionMetadata(Inst, &PFS))
3482 case InstExtraComma:
3483 BB->getInstList().push_back(Inst);
3485 // If the instruction parser ate an extra comma at the end of it, it
3486 // *must* be followed by metadata.
3487 if (ParseInstructionMetadata(Inst, &PFS))
3492 // Set the name on the instruction.
3493 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
3494 } while (!isa<TerminatorInst>(Inst));
3499 //===----------------------------------------------------------------------===//
3500 // Instruction Parsing.
3501 //===----------------------------------------------------------------------===//
3503 /// ParseInstruction - Parse one of the many different instructions.
3505 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
3506 PerFunctionState &PFS) {
3507 lltok::Kind Token = Lex.getKind();
3508 if (Token == lltok::Eof)
3509 return TokError("found end of file when expecting more instructions");
3510 LocTy Loc = Lex.getLoc();
3511 unsigned KeywordVal = Lex.getUIntVal();
3512 Lex.Lex(); // Eat the keyword.
3515 default: return Error(Loc, "expected instruction opcode");
3516 // Terminator Instructions.
3517 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
3518 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
3519 case lltok::kw_br: return ParseBr(Inst, PFS);
3520 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
3521 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
3522 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
3523 case lltok::kw_resume: return ParseResume(Inst, PFS);
3524 // Binary Operators.
3528 case lltok::kw_shl: {
3529 bool NUW = EatIfPresent(lltok::kw_nuw);
3530 bool NSW = EatIfPresent(lltok::kw_nsw);
3531 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
3533 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3535 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
3536 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
3539 case lltok::kw_fadd:
3540 case lltok::kw_fsub:
3541 case lltok::kw_fmul:
3542 case lltok::kw_fdiv:
3543 case lltok::kw_frem: {
3544 FastMathFlags FMF = EatFastMathFlagsIfPresent();
3545 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
3549 Inst->setFastMathFlags(FMF);
3553 case lltok::kw_sdiv:
3554 case lltok::kw_udiv:
3555 case lltok::kw_lshr:
3556 case lltok::kw_ashr: {
3557 bool Exact = EatIfPresent(lltok::kw_exact);
3559 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3560 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
3564 case lltok::kw_urem:
3565 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
3568 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
3569 case lltok::kw_icmp:
3570 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
3572 case lltok::kw_trunc:
3573 case lltok::kw_zext:
3574 case lltok::kw_sext:
3575 case lltok::kw_fptrunc:
3576 case lltok::kw_fpext:
3577 case lltok::kw_bitcast:
3578 case lltok::kw_addrspacecast:
3579 case lltok::kw_uitofp:
3580 case lltok::kw_sitofp:
3581 case lltok::kw_fptoui:
3582 case lltok::kw_fptosi:
3583 case lltok::kw_inttoptr:
3584 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
3586 case lltok::kw_select: return ParseSelect(Inst, PFS);
3587 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
3588 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
3589 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
3590 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
3591 case lltok::kw_phi: return ParsePHI(Inst, PFS);
3592 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
3594 case lltok::kw_call: return ParseCall(Inst, PFS, CallInst::TCK_None);
3595 case lltok::kw_tail: return ParseCall(Inst, PFS, CallInst::TCK_Tail);
3596 case lltok::kw_musttail: return ParseCall(Inst, PFS, CallInst::TCK_MustTail);
3598 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
3599 case lltok::kw_load: return ParseLoad(Inst, PFS);
3600 case lltok::kw_store: return ParseStore(Inst, PFS);
3601 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
3602 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
3603 case lltok::kw_fence: return ParseFence(Inst, PFS);
3604 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
3605 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
3606 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
3610 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
3611 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
3612 if (Opc == Instruction::FCmp) {
3613 switch (Lex.getKind()) {
3614 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
3615 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
3616 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
3617 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
3618 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
3619 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
3620 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
3621 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
3622 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
3623 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
3624 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
3625 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
3626 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
3627 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
3628 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
3629 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
3630 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
3633 switch (Lex.getKind()) {
3634 default: return TokError("expected icmp predicate (e.g. 'eq')");
3635 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
3636 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
3637 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
3638 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
3639 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
3640 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
3641 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
3642 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
3643 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
3644 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3651 //===----------------------------------------------------------------------===//
3652 // Terminator Instructions.
3653 //===----------------------------------------------------------------------===//
3655 /// ParseRet - Parse a return instruction.
3656 /// ::= 'ret' void (',' !dbg, !1)*
3657 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
3658 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3659 PerFunctionState &PFS) {
3660 SMLoc TypeLoc = Lex.getLoc();
3662 if (ParseType(Ty, true /*void allowed*/)) return true;
3664 Type *ResType = PFS.getFunction().getReturnType();
3666 if (Ty->isVoidTy()) {
3667 if (!ResType->isVoidTy())
3668 return Error(TypeLoc, "value doesn't match function result type '" +
3669 getTypeString(ResType) + "'");
3671 Inst = ReturnInst::Create(Context);
3676 if (ParseValue(Ty, RV, PFS)) return true;
3678 if (ResType != RV->getType())
3679 return Error(TypeLoc, "value doesn't match function result type '" +
3680 getTypeString(ResType) + "'");
3682 Inst = ReturnInst::Create(Context, RV);
3688 /// ::= 'br' TypeAndValue
3689 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3690 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
3693 BasicBlock *Op1, *Op2;
3694 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
3696 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
3697 Inst = BranchInst::Create(BB);
3701 if (Op0->getType() != Type::getInt1Ty(Context))
3702 return Error(Loc, "branch condition must have 'i1' type");
3704 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
3705 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
3706 ParseToken(lltok::comma, "expected ',' after true destination") ||
3707 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
3710 Inst = BranchInst::Create(Op1, Op2, Op0);
3716 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
3718 /// ::= (TypeAndValue ',' TypeAndValue)*
3719 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
3720 LocTy CondLoc, BBLoc;
3722 BasicBlock *DefaultBB;
3723 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
3724 ParseToken(lltok::comma, "expected ',' after switch condition") ||
3725 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
3726 ParseToken(lltok::lsquare, "expected '[' with switch table"))
3729 if (!Cond->getType()->isIntegerTy())
3730 return Error(CondLoc, "switch condition must have integer type");
3732 // Parse the jump table pairs.
3733 SmallPtrSet<Value*, 32> SeenCases;
3734 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
3735 while (Lex.getKind() != lltok::rsquare) {
3739 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
3740 ParseToken(lltok::comma, "expected ',' after case value") ||
3741 ParseTypeAndBasicBlock(DestBB, PFS))
3744 if (!SeenCases.insert(Constant).second)
3745 return Error(CondLoc, "duplicate case value in switch");
3746 if (!isa<ConstantInt>(Constant))
3747 return Error(CondLoc, "case value is not a constant integer");
3749 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
3752 Lex.Lex(); // Eat the ']'.
3754 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
3755 for (unsigned i = 0, e = Table.size(); i != e; ++i)
3756 SI->addCase(Table[i].first, Table[i].second);
3763 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
3764 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
3767 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
3768 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
3769 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
3772 if (!Address->getType()->isPointerTy())
3773 return Error(AddrLoc, "indirectbr address must have pointer type");
3775 // Parse the destination list.
3776 SmallVector<BasicBlock*, 16> DestList;
3778 if (Lex.getKind() != lltok::rsquare) {
3780 if (ParseTypeAndBasicBlock(DestBB, PFS))
3782 DestList.push_back(DestBB);
3784 while (EatIfPresent(lltok::comma)) {
3785 if (ParseTypeAndBasicBlock(DestBB, PFS))
3787 DestList.push_back(DestBB);
3791 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
3794 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
3795 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
3796 IBI->addDestination(DestList[i]);
3803 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3804 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3805 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3806 LocTy CallLoc = Lex.getLoc();
3807 AttrBuilder RetAttrs, FnAttrs;
3808 std::vector<unsigned> FwdRefAttrGrps;
3811 Type *RetType = nullptr;
3814 SmallVector<ParamInfo, 16> ArgList;
3816 BasicBlock *NormalBB, *UnwindBB;
3817 if (ParseOptionalCallingConv(CC) ||
3818 ParseOptionalReturnAttrs(RetAttrs) ||
3819 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3820 ParseValID(CalleeID) ||
3821 ParseParameterList(ArgList, PFS) ||
3822 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
3824 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3825 ParseTypeAndBasicBlock(NormalBB, PFS) ||
3826 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3827 ParseTypeAndBasicBlock(UnwindBB, PFS))
3830 // If RetType is a non-function pointer type, then this is the short syntax
3831 // for the call, which means that RetType is just the return type. Infer the
3832 // rest of the function argument types from the arguments that are present.
3833 PointerType *PFTy = nullptr;
3834 FunctionType *Ty = nullptr;
3835 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3836 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3837 // Pull out the types of all of the arguments...
3838 std::vector<Type*> ParamTypes;
3839 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3840 ParamTypes.push_back(ArgList[i].V->getType());
3842 if (!FunctionType::isValidReturnType(RetType))
3843 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3845 Ty = FunctionType::get(RetType, ParamTypes, false);
3846 PFTy = PointerType::getUnqual(Ty);
3849 // Look up the callee.
3851 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3853 // Set up the Attribute for the function.
3854 SmallVector<AttributeSet, 8> Attrs;
3855 if (RetAttrs.hasAttributes())
3856 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3857 AttributeSet::ReturnIndex,
3860 SmallVector<Value*, 8> Args;
3862 // Loop through FunctionType's arguments and ensure they are specified
3863 // correctly. Also, gather any parameter attributes.
3864 FunctionType::param_iterator I = Ty->param_begin();
3865 FunctionType::param_iterator E = Ty->param_end();
3866 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3867 Type *ExpectedTy = nullptr;
3870 } else if (!Ty->isVarArg()) {
3871 return Error(ArgList[i].Loc, "too many arguments specified");
3874 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3875 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3876 getTypeString(ExpectedTy) + "'");
3877 Args.push_back(ArgList[i].V);
3878 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
3879 AttrBuilder B(ArgList[i].Attrs, i + 1);
3880 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
3885 return Error(CallLoc, "not enough parameters specified for call");
3887 if (FnAttrs.hasAttributes())
3888 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3889 AttributeSet::FunctionIndex,
3892 // Finish off the Attribute and check them
3893 AttributeSet PAL = AttributeSet::get(Context, Attrs);
3895 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB, Args);
3896 II->setCallingConv(CC);
3897 II->setAttributes(PAL);
3898 ForwardRefAttrGroups[II] = FwdRefAttrGrps;
3904 /// ::= 'resume' TypeAndValue
3905 bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
3906 Value *Exn; LocTy ExnLoc;
3907 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
3910 ResumeInst *RI = ResumeInst::Create(Exn);
3915 //===----------------------------------------------------------------------===//
3916 // Binary Operators.
3917 //===----------------------------------------------------------------------===//
3920 /// ::= ArithmeticOps TypeAndValue ',' Value
3922 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3923 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3924 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3925 unsigned Opc, unsigned OperandType) {
3926 LocTy Loc; Value *LHS, *RHS;
3927 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3928 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3929 ParseValue(LHS->getType(), RHS, PFS))
3933 switch (OperandType) {
3934 default: llvm_unreachable("Unknown operand type!");
3935 case 0: // int or FP.
3936 Valid = LHS->getType()->isIntOrIntVectorTy() ||
3937 LHS->getType()->isFPOrFPVectorTy();
3939 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
3940 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
3944 return Error(Loc, "invalid operand type for instruction");
3946 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3951 /// ::= ArithmeticOps TypeAndValue ',' Value {
3952 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3954 LocTy Loc; Value *LHS, *RHS;
3955 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3956 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3957 ParseValue(LHS->getType(), RHS, PFS))
3960 if (!LHS->getType()->isIntOrIntVectorTy())
3961 return Error(Loc,"instruction requires integer or integer vector operands");
3963 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3969 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3970 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3971 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3973 // Parse the integer/fp comparison predicate.
3977 if (ParseCmpPredicate(Pred, Opc) ||
3978 ParseTypeAndValue(LHS, Loc, PFS) ||
3979 ParseToken(lltok::comma, "expected ',' after compare value") ||
3980 ParseValue(LHS->getType(), RHS, PFS))
3983 if (Opc == Instruction::FCmp) {
3984 if (!LHS->getType()->isFPOrFPVectorTy())
3985 return Error(Loc, "fcmp requires floating point operands");
3986 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3988 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
3989 if (!LHS->getType()->isIntOrIntVectorTy() &&
3990 !LHS->getType()->getScalarType()->isPointerTy())
3991 return Error(Loc, "icmp requires integer operands");
3992 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3997 //===----------------------------------------------------------------------===//
3998 // Other Instructions.
3999 //===----------------------------------------------------------------------===//
4003 /// ::= CastOpc TypeAndValue 'to' Type
4004 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
4008 Type *DestTy = nullptr;
4009 if (ParseTypeAndValue(Op, Loc, PFS) ||
4010 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
4014 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
4015 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
4016 return Error(Loc, "invalid cast opcode for cast from '" +
4017 getTypeString(Op->getType()) + "' to '" +
4018 getTypeString(DestTy) + "'");
4020 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
4025 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
4026 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
4028 Value *Op0, *Op1, *Op2;
4029 if (ParseTypeAndValue(Op0, Loc, PFS) ||
4030 ParseToken(lltok::comma, "expected ',' after select condition") ||
4031 ParseTypeAndValue(Op1, PFS) ||
4032 ParseToken(lltok::comma, "expected ',' after select value") ||
4033 ParseTypeAndValue(Op2, PFS))
4036 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
4037 return Error(Loc, Reason);
4039 Inst = SelectInst::Create(Op0, Op1, Op2);
4044 /// ::= 'va_arg' TypeAndValue ',' Type
4045 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
4047 Type *EltTy = nullptr;
4049 if (ParseTypeAndValue(Op, PFS) ||
4050 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
4051 ParseType(EltTy, TypeLoc))
4054 if (!EltTy->isFirstClassType())
4055 return Error(TypeLoc, "va_arg requires operand with first class type");
4057 Inst = new VAArgInst(Op, EltTy);
4061 /// ParseExtractElement
4062 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
4063 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
4066 if (ParseTypeAndValue(Op0, Loc, PFS) ||
4067 ParseToken(lltok::comma, "expected ',' after extract value") ||
4068 ParseTypeAndValue(Op1, PFS))
4071 if (!ExtractElementInst::isValidOperands(Op0, Op1))
4072 return Error(Loc, "invalid extractelement operands");
4074 Inst = ExtractElementInst::Create(Op0, Op1);
4078 /// ParseInsertElement
4079 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
4080 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
4082 Value *Op0, *Op1, *Op2;
4083 if (ParseTypeAndValue(Op0, Loc, PFS) ||
4084 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
4085 ParseTypeAndValue(Op1, PFS) ||
4086 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
4087 ParseTypeAndValue(Op2, PFS))
4090 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
4091 return Error(Loc, "invalid insertelement operands");
4093 Inst = InsertElementInst::Create(Op0, Op1, Op2);
4097 /// ParseShuffleVector
4098 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
4099 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
4101 Value *Op0, *Op1, *Op2;
4102 if (ParseTypeAndValue(Op0, Loc, PFS) ||
4103 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
4104 ParseTypeAndValue(Op1, PFS) ||
4105 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
4106 ParseTypeAndValue(Op2, PFS))
4109 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
4110 return Error(Loc, "invalid shufflevector operands");
4112 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
4117 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
4118 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
4119 Type *Ty = nullptr; LocTy TypeLoc;
4122 if (ParseType(Ty, TypeLoc) ||
4123 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
4124 ParseValue(Ty, Op0, PFS) ||
4125 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
4126 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
4127 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
4130 bool AteExtraComma = false;
4131 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
4133 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
4135 if (!EatIfPresent(lltok::comma))
4138 if (Lex.getKind() == lltok::MetadataVar) {
4139 AteExtraComma = true;
4143 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
4144 ParseValue(Ty, Op0, PFS) ||
4145 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
4146 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
4147 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
4151 if (!Ty->isFirstClassType())
4152 return Error(TypeLoc, "phi node must have first class type");
4154 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
4155 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
4156 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
4158 return AteExtraComma ? InstExtraComma : InstNormal;
4162 /// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
4164 /// ::= 'catch' TypeAndValue
4166 /// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
4167 bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
4168 Type *Ty = nullptr; LocTy TyLoc;
4169 Value *PersFn; LocTy PersFnLoc;
4171 if (ParseType(Ty, TyLoc) ||
4172 ParseToken(lltok::kw_personality, "expected 'personality'") ||
4173 ParseTypeAndValue(PersFn, PersFnLoc, PFS))
4176 LandingPadInst *LP = LandingPadInst::Create(Ty, PersFn, 0);
4177 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
4179 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
4180 LandingPadInst::ClauseType CT;
4181 if (EatIfPresent(lltok::kw_catch))
4182 CT = LandingPadInst::Catch;
4183 else if (EatIfPresent(lltok::kw_filter))
4184 CT = LandingPadInst::Filter;
4186 return TokError("expected 'catch' or 'filter' clause type");
4190 if (ParseTypeAndValue(V, VLoc, PFS)) {
4195 // A 'catch' type expects a non-array constant. A filter clause expects an
4197 if (CT == LandingPadInst::Catch) {
4198 if (isa<ArrayType>(V->getType()))
4199 Error(VLoc, "'catch' clause has an invalid type");
4201 if (!isa<ArrayType>(V->getType()))
4202 Error(VLoc, "'filter' clause has an invalid type");
4205 LP->addClause(cast<Constant>(V));
4213 /// ::= 'call' OptionalCallingConv OptionalAttrs Type Value
4214 /// ParameterList OptionalAttrs
4215 /// ::= 'tail' 'call' OptionalCallingConv OptionalAttrs Type Value
4216 /// ParameterList OptionalAttrs
4217 /// ::= 'musttail' 'call' OptionalCallingConv OptionalAttrs Type Value
4218 /// ParameterList OptionalAttrs
4219 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
4220 CallInst::TailCallKind TCK) {
4221 AttrBuilder RetAttrs, FnAttrs;
4222 std::vector<unsigned> FwdRefAttrGrps;
4225 Type *RetType = nullptr;
4228 SmallVector<ParamInfo, 16> ArgList;
4229 LocTy CallLoc = Lex.getLoc();
4231 if ((TCK != CallInst::TCK_None &&
4232 ParseToken(lltok::kw_call, "expected 'tail call'")) ||
4233 ParseOptionalCallingConv(CC) ||
4234 ParseOptionalReturnAttrs(RetAttrs) ||
4235 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
4236 ParseValID(CalleeID) ||
4237 ParseParameterList(ArgList, PFS, TCK == CallInst::TCK_MustTail,
4238 PFS.getFunction().isVarArg()) ||
4239 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
4243 // If RetType is a non-function pointer type, then this is the short syntax
4244 // for the call, which means that RetType is just the return type. Infer the
4245 // rest of the function argument types from the arguments that are present.
4246 PointerType *PFTy = nullptr;
4247 FunctionType *Ty = nullptr;
4248 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
4249 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
4250 // Pull out the types of all of the arguments...
4251 std::vector<Type*> ParamTypes;
4252 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
4253 ParamTypes.push_back(ArgList[i].V->getType());
4255 if (!FunctionType::isValidReturnType(RetType))
4256 return Error(RetTypeLoc, "Invalid result type for LLVM function");
4258 Ty = FunctionType::get(RetType, ParamTypes, false);
4259 PFTy = PointerType::getUnqual(Ty);
4262 // Look up the callee.
4264 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
4266 // Set up the Attribute for the function.
4267 SmallVector<AttributeSet, 8> Attrs;
4268 if (RetAttrs.hasAttributes())
4269 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4270 AttributeSet::ReturnIndex,
4273 SmallVector<Value*, 8> Args;
4275 // Loop through FunctionType's arguments and ensure they are specified
4276 // correctly. Also, gather any parameter attributes.
4277 FunctionType::param_iterator I = Ty->param_begin();
4278 FunctionType::param_iterator E = Ty->param_end();
4279 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
4280 Type *ExpectedTy = nullptr;
4283 } else if (!Ty->isVarArg()) {
4284 return Error(ArgList[i].Loc, "too many arguments specified");
4287 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
4288 return Error(ArgList[i].Loc, "argument is not of expected type '" +
4289 getTypeString(ExpectedTy) + "'");
4290 Args.push_back(ArgList[i].V);
4291 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
4292 AttrBuilder B(ArgList[i].Attrs, i + 1);
4293 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
4298 return Error(CallLoc, "not enough parameters specified for call");
4300 if (FnAttrs.hasAttributes())
4301 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4302 AttributeSet::FunctionIndex,
4305 // Finish off the Attribute and check them
4306 AttributeSet PAL = AttributeSet::get(Context, Attrs);
4308 CallInst *CI = CallInst::Create(Callee, Args);
4309 CI->setTailCallKind(TCK);
4310 CI->setCallingConv(CC);
4311 CI->setAttributes(PAL);
4312 ForwardRefAttrGroups[CI] = FwdRefAttrGrps;
4317 //===----------------------------------------------------------------------===//
4318 // Memory Instructions.
4319 //===----------------------------------------------------------------------===//
4322 /// ::= 'alloca' 'inalloca'? Type (',' TypeAndValue)? (',' 'align' i32)?
4323 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
4324 Value *Size = nullptr;
4326 unsigned Alignment = 0;
4329 bool IsInAlloca = EatIfPresent(lltok::kw_inalloca);
4331 if (ParseType(Ty)) return true;
4333 bool AteExtraComma = false;
4334 if (EatIfPresent(lltok::comma)) {
4335 if (Lex.getKind() == lltok::kw_align) {
4336 if (ParseOptionalAlignment(Alignment)) return true;
4337 } else if (Lex.getKind() == lltok::MetadataVar) {
4338 AteExtraComma = true;
4340 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
4341 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4346 if (Size && !Size->getType()->isIntegerTy())
4347 return Error(SizeLoc, "element count must have integer type");
4349 AllocaInst *AI = new AllocaInst(Ty, Size, Alignment);
4350 AI->setUsedWithInAlloca(IsInAlloca);
4352 return AteExtraComma ? InstExtraComma : InstNormal;
4356 /// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
4357 /// ::= 'load' 'atomic' 'volatile'? TypeAndValue
4358 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
4359 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
4360 Value *Val; LocTy Loc;
4361 unsigned Alignment = 0;
4362 bool AteExtraComma = false;
4363 bool isAtomic = false;
4364 AtomicOrdering Ordering = NotAtomic;
4365 SynchronizationScope Scope = CrossThread;
4367 if (Lex.getKind() == lltok::kw_atomic) {
4372 bool isVolatile = false;
4373 if (Lex.getKind() == lltok::kw_volatile) {
4378 if (ParseTypeAndValue(Val, Loc, PFS) ||
4379 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
4380 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4383 if (!Val->getType()->isPointerTy() ||
4384 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
4385 return Error(Loc, "load operand must be a pointer to a first class type");
4386 if (isAtomic && !Alignment)
4387 return Error(Loc, "atomic load must have explicit non-zero alignment");
4388 if (Ordering == Release || Ordering == AcquireRelease)
4389 return Error(Loc, "atomic load cannot use Release ordering");
4391 Inst = new LoadInst(Val, "", isVolatile, Alignment, Ordering, Scope);
4392 return AteExtraComma ? InstExtraComma : InstNormal;
4397 /// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
4398 /// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
4399 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
4400 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
4401 Value *Val, *Ptr; LocTy Loc, PtrLoc;
4402 unsigned Alignment = 0;
4403 bool AteExtraComma = false;
4404 bool isAtomic = false;
4405 AtomicOrdering Ordering = NotAtomic;
4406 SynchronizationScope Scope = CrossThread;
4408 if (Lex.getKind() == lltok::kw_atomic) {
4413 bool isVolatile = false;
4414 if (Lex.getKind() == lltok::kw_volatile) {
4419 if (ParseTypeAndValue(Val, Loc, PFS) ||
4420 ParseToken(lltok::comma, "expected ',' after store operand") ||
4421 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4422 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
4423 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4426 if (!Ptr->getType()->isPointerTy())
4427 return Error(PtrLoc, "store operand must be a pointer");
4428 if (!Val->getType()->isFirstClassType())
4429 return Error(Loc, "store operand must be a first class value");
4430 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
4431 return Error(Loc, "stored value and pointer type do not match");
4432 if (isAtomic && !Alignment)
4433 return Error(Loc, "atomic store must have explicit non-zero alignment");
4434 if (Ordering == Acquire || Ordering == AcquireRelease)
4435 return Error(Loc, "atomic store cannot use Acquire ordering");
4437 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, Scope);
4438 return AteExtraComma ? InstExtraComma : InstNormal;
4442 /// ::= 'cmpxchg' 'weak'? 'volatile'? TypeAndValue ',' TypeAndValue ','
4443 /// TypeAndValue 'singlethread'? AtomicOrdering AtomicOrdering
4444 int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
4445 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
4446 bool AteExtraComma = false;
4447 AtomicOrdering SuccessOrdering = NotAtomic;
4448 AtomicOrdering FailureOrdering = NotAtomic;
4449 SynchronizationScope Scope = CrossThread;
4450 bool isVolatile = false;
4451 bool isWeak = false;
4453 if (EatIfPresent(lltok::kw_weak))
4456 if (EatIfPresent(lltok::kw_volatile))
4459 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4460 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
4461 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
4462 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
4463 ParseTypeAndValue(New, NewLoc, PFS) ||
4464 ParseScopeAndOrdering(true /*Always atomic*/, Scope, SuccessOrdering) ||
4465 ParseOrdering(FailureOrdering))
4468 if (SuccessOrdering == Unordered || FailureOrdering == Unordered)
4469 return TokError("cmpxchg cannot be unordered");
4470 if (SuccessOrdering < FailureOrdering)
4471 return TokError("cmpxchg must be at least as ordered on success as failure");
4472 if (FailureOrdering == Release || FailureOrdering == AcquireRelease)
4473 return TokError("cmpxchg failure ordering cannot include release semantics");
4474 if (!Ptr->getType()->isPointerTy())
4475 return Error(PtrLoc, "cmpxchg operand must be a pointer");
4476 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
4477 return Error(CmpLoc, "compare value and pointer type do not match");
4478 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
4479 return Error(NewLoc, "new value and pointer type do not match");
4480 if (!New->getType()->isIntegerTy())
4481 return Error(NewLoc, "cmpxchg operand must be an integer");
4482 unsigned Size = New->getType()->getPrimitiveSizeInBits();
4483 if (Size < 8 || (Size & (Size - 1)))
4484 return Error(NewLoc, "cmpxchg operand must be power-of-two byte-sized"
4487 AtomicCmpXchgInst *CXI = new AtomicCmpXchgInst(
4488 Ptr, Cmp, New, SuccessOrdering, FailureOrdering, Scope);
4489 CXI->setVolatile(isVolatile);
4490 CXI->setWeak(isWeak);
4492 return AteExtraComma ? InstExtraComma : InstNormal;
4496 /// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
4497 /// 'singlethread'? AtomicOrdering
4498 int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
4499 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
4500 bool AteExtraComma = false;
4501 AtomicOrdering Ordering = NotAtomic;
4502 SynchronizationScope Scope = CrossThread;
4503 bool isVolatile = false;
4504 AtomicRMWInst::BinOp Operation;
4506 if (EatIfPresent(lltok::kw_volatile))
4509 switch (Lex.getKind()) {
4510 default: return TokError("expected binary operation in atomicrmw");
4511 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
4512 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
4513 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
4514 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
4515 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
4516 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
4517 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
4518 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
4519 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
4520 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
4521 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
4523 Lex.Lex(); // Eat the operation.
4525 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4526 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
4527 ParseTypeAndValue(Val, ValLoc, PFS) ||
4528 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4531 if (Ordering == Unordered)
4532 return TokError("atomicrmw cannot be unordered");
4533 if (!Ptr->getType()->isPointerTy())
4534 return Error(PtrLoc, "atomicrmw operand must be a pointer");
4535 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
4536 return Error(ValLoc, "atomicrmw value and pointer type do not match");
4537 if (!Val->getType()->isIntegerTy())
4538 return Error(ValLoc, "atomicrmw operand must be an integer");
4539 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
4540 if (Size < 8 || (Size & (Size - 1)))
4541 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
4544 AtomicRMWInst *RMWI =
4545 new AtomicRMWInst(Operation, Ptr, Val, Ordering, Scope);
4546 RMWI->setVolatile(isVolatile);
4548 return AteExtraComma ? InstExtraComma : InstNormal;
4552 /// ::= 'fence' 'singlethread'? AtomicOrdering
4553 int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
4554 AtomicOrdering Ordering = NotAtomic;
4555 SynchronizationScope Scope = CrossThread;
4556 if (ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4559 if (Ordering == Unordered)
4560 return TokError("fence cannot be unordered");
4561 if (Ordering == Monotonic)
4562 return TokError("fence cannot be monotonic");
4564 Inst = new FenceInst(Context, Ordering, Scope);
4568 /// ParseGetElementPtr
4569 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
4570 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
4571 Value *Ptr = nullptr;
4572 Value *Val = nullptr;
4575 bool InBounds = EatIfPresent(lltok::kw_inbounds);
4577 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
4579 Type *BaseType = Ptr->getType();
4580 PointerType *BasePointerType = dyn_cast<PointerType>(BaseType->getScalarType());
4581 if (!BasePointerType)
4582 return Error(Loc, "base of getelementptr must be a pointer");
4584 SmallVector<Value*, 16> Indices;
4585 bool AteExtraComma = false;
4586 while (EatIfPresent(lltok::comma)) {
4587 if (Lex.getKind() == lltok::MetadataVar) {
4588 AteExtraComma = true;
4591 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
4592 if (!Val->getType()->getScalarType()->isIntegerTy())
4593 return Error(EltLoc, "getelementptr index must be an integer");
4594 if (Val->getType()->isVectorTy() != Ptr->getType()->isVectorTy())
4595 return Error(EltLoc, "getelementptr index type missmatch");
4596 if (Val->getType()->isVectorTy()) {
4597 unsigned ValNumEl = cast<VectorType>(Val->getType())->getNumElements();
4598 unsigned PtrNumEl = cast<VectorType>(Ptr->getType())->getNumElements();
4599 if (ValNumEl != PtrNumEl)
4600 return Error(EltLoc,
4601 "getelementptr vector index has a wrong number of elements");
4603 Indices.push_back(Val);
4606 if (!Indices.empty() && !BasePointerType->getElementType()->isSized())
4607 return Error(Loc, "base element of getelementptr must be sized");
4609 if (!GetElementPtrInst::getIndexedType(BaseType, Indices))
4610 return Error(Loc, "invalid getelementptr indices");
4611 Inst = GetElementPtrInst::Create(Ptr, Indices);
4613 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
4614 return AteExtraComma ? InstExtraComma : InstNormal;
4617 /// ParseExtractValue
4618 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
4619 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
4620 Value *Val; LocTy Loc;
4621 SmallVector<unsigned, 4> Indices;
4623 if (ParseTypeAndValue(Val, Loc, PFS) ||
4624 ParseIndexList(Indices, AteExtraComma))
4627 if (!Val->getType()->isAggregateType())
4628 return Error(Loc, "extractvalue operand must be aggregate type");
4630 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
4631 return Error(Loc, "invalid indices for extractvalue");
4632 Inst = ExtractValueInst::Create(Val, Indices);
4633 return AteExtraComma ? InstExtraComma : InstNormal;
4636 /// ParseInsertValue
4637 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
4638 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
4639 Value *Val0, *Val1; LocTy Loc0, Loc1;
4640 SmallVector<unsigned, 4> Indices;
4642 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
4643 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
4644 ParseTypeAndValue(Val1, Loc1, PFS) ||
4645 ParseIndexList(Indices, AteExtraComma))
4648 if (!Val0->getType()->isAggregateType())
4649 return Error(Loc0, "insertvalue operand must be aggregate type");
4651 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
4652 return Error(Loc0, "invalid indices for insertvalue");
4653 Inst = InsertValueInst::Create(Val0, Val1, Indices);
4654 return AteExtraComma ? InstExtraComma : InstNormal;
4657 //===----------------------------------------------------------------------===//
4658 // Embedded metadata.
4659 //===----------------------------------------------------------------------===//
4661 /// ParseMDNodeVector
4662 /// ::= Element (',' Element)*
4664 /// ::= 'null' | TypeAndValue
4665 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts,
4666 PerFunctionState *PFS) {
4667 // Check for an empty list.
4668 if (Lex.getKind() == lltok::rbrace)
4672 // Null is a special case since it is typeless.
4673 if (EatIfPresent(lltok::kw_null)) {
4674 Elts.push_back(nullptr);
4679 if (ParseTypeAndValue(V, PFS)) return true;
4681 } while (EatIfPresent(lltok::comma));
4686 //===----------------------------------------------------------------------===//
4687 // Use-list order directives.
4688 //===----------------------------------------------------------------------===//
4689 bool LLParser::sortUseListOrder(Value *V, ArrayRef<unsigned> Indexes,
4692 return Error(Loc, "value has no uses");
4694 unsigned NumUses = 0;
4695 SmallDenseMap<const Use *, unsigned, 16> Order;
4696 for (const Use &U : V->uses()) {
4697 if (++NumUses > Indexes.size())
4699 Order[&U] = Indexes[NumUses - 1];
4702 return Error(Loc, "value only has one use");
4703 if (Order.size() != Indexes.size() || NumUses > Indexes.size())
4704 return Error(Loc, "wrong number of indexes, expected " +
4705 Twine(std::distance(V->use_begin(), V->use_end())));
4707 V->sortUseList([&](const Use &L, const Use &R) {
4708 return Order.lookup(&L) < Order.lookup(&R);
4713 /// ParseUseListOrderIndexes
4714 /// ::= '{' uint32 (',' uint32)+ '}'
4715 bool LLParser::ParseUseListOrderIndexes(SmallVectorImpl<unsigned> &Indexes) {
4716 SMLoc Loc = Lex.getLoc();
4717 if (ParseToken(lltok::lbrace, "expected '{' here"))
4719 if (Lex.getKind() == lltok::rbrace)
4720 return Lex.Error("expected non-empty list of uselistorder indexes");
4722 // Use Offset, Max, and IsOrdered to check consistency of indexes. The
4723 // indexes should be distinct numbers in the range [0, size-1], and should
4725 unsigned Offset = 0;
4727 bool IsOrdered = true;
4728 assert(Indexes.empty() && "Expected empty order vector");
4731 if (ParseUInt32(Index))
4734 // Update consistency checks.
4735 Offset += Index - Indexes.size();
4736 Max = std::max(Max, Index);
4737 IsOrdered &= Index == Indexes.size();
4739 Indexes.push_back(Index);
4740 } while (EatIfPresent(lltok::comma));
4742 if (ParseToken(lltok::rbrace, "expected '}' here"))
4745 if (Indexes.size() < 2)
4746 return Error(Loc, "expected >= 2 uselistorder indexes");
4747 if (Offset != 0 || Max >= Indexes.size())
4748 return Error(Loc, "expected distinct uselistorder indexes in range [0, size)");
4750 return Error(Loc, "expected uselistorder indexes to change the order");
4755 /// ParseUseListOrder
4756 /// ::= 'uselistorder' Type Value ',' UseListOrderIndexes
4757 bool LLParser::ParseUseListOrder(PerFunctionState *PFS) {
4758 SMLoc Loc = Lex.getLoc();
4759 if (ParseToken(lltok::kw_uselistorder, "expected uselistorder directive"))
4763 SmallVector<unsigned, 16> Indexes;
4764 if (ParseTypeAndValue(V, PFS) ||
4765 ParseToken(lltok::comma, "expected comma in uselistorder directive") ||
4766 ParseUseListOrderIndexes(Indexes))
4769 return sortUseListOrder(V, Indexes, Loc);
4772 /// ParseUseListOrderBB
4773 /// ::= 'uselistorder_bb' @foo ',' %bar ',' UseListOrderIndexes
4774 bool LLParser::ParseUseListOrderBB() {
4775 assert(Lex.getKind() == lltok::kw_uselistorder_bb);
4776 SMLoc Loc = Lex.getLoc();
4780 SmallVector<unsigned, 16> Indexes;
4781 if (ParseValID(Fn) ||
4782 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
4783 ParseValID(Label) ||
4784 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
4785 ParseUseListOrderIndexes(Indexes))
4788 // Check the function.
4790 if (Fn.Kind == ValID::t_GlobalName)
4791 GV = M->getNamedValue(Fn.StrVal);
4792 else if (Fn.Kind == ValID::t_GlobalID)
4793 GV = Fn.UIntVal < NumberedVals.size() ? NumberedVals[Fn.UIntVal] : nullptr;
4795 return Error(Fn.Loc, "expected function name in uselistorder_bb");
4797 return Error(Fn.Loc, "invalid function forward reference in uselistorder_bb");
4798 auto *F = dyn_cast<Function>(GV);
4800 return Error(Fn.Loc, "expected function name in uselistorder_bb");
4801 if (F->isDeclaration())
4802 return Error(Fn.Loc, "invalid declaration in uselistorder_bb");
4804 // Check the basic block.
4805 if (Label.Kind == ValID::t_LocalID)
4806 return Error(Label.Loc, "invalid numeric label in uselistorder_bb");
4807 if (Label.Kind != ValID::t_LocalName)
4808 return Error(Label.Loc, "expected basic block name in uselistorder_bb");
4809 Value *V = F->getValueSymbolTable().lookup(Label.StrVal);
4811 return Error(Label.Loc, "invalid basic block in uselistorder_bb");
4812 if (!isa<BasicBlock>(V))
4813 return Error(Label.Loc, "expected basic block in uselistorder_bb");
4815 return sortUseListOrder(V, Indexes, Loc);