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) + "'");
170 // Resolve metadata cycles.
171 for (auto &N : NumberedMetadata)
172 if (auto *G = cast_or_null<GenericMDNode>(N))
175 // Look for intrinsic functions and CallInst that need to be upgraded
176 for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; )
177 UpgradeCallsToIntrinsic(FI++); // must be post-increment, as we remove
179 UpgradeDebugInfo(*M);
184 //===----------------------------------------------------------------------===//
185 // Top-Level Entities
186 //===----------------------------------------------------------------------===//
188 bool LLParser::ParseTopLevelEntities() {
190 switch (Lex.getKind()) {
191 default: return TokError("expected top-level entity");
192 case lltok::Eof: return false;
193 case lltok::kw_declare: if (ParseDeclare()) return true; break;
194 case lltok::kw_define: if (ParseDefine()) return true; break;
195 case lltok::kw_module: if (ParseModuleAsm()) return true; break;
196 case lltok::kw_target: if (ParseTargetDefinition()) return true; break;
197 case lltok::kw_deplibs: if (ParseDepLibs()) return true; break;
198 case lltok::LocalVarID: if (ParseUnnamedType()) return true; break;
199 case lltok::LocalVar: if (ParseNamedType()) return true; break;
200 case lltok::GlobalID: if (ParseUnnamedGlobal()) return true; break;
201 case lltok::GlobalVar: if (ParseNamedGlobal()) return true; break;
202 case lltok::ComdatVar: if (parseComdat()) return true; break;
203 case lltok::exclaim: if (ParseStandaloneMetadata()) return true; break;
204 case lltok::MetadataVar:if (ParseNamedMetadata()) return true; break;
206 // The Global variable production with no name can have many different
207 // optional leading prefixes, the production is:
208 // GlobalVar ::= OptionalLinkage OptionalVisibility OptionalDLLStorageClass
209 // OptionalThreadLocal OptionalAddrSpace OptionalUnNammedAddr
210 // ('constant'|'global') ...
211 case lltok::kw_private: // OptionalLinkage
212 case lltok::kw_internal: // OptionalLinkage
213 case lltok::kw_weak: // OptionalLinkage
214 case lltok::kw_weak_odr: // OptionalLinkage
215 case lltok::kw_linkonce: // OptionalLinkage
216 case lltok::kw_linkonce_odr: // OptionalLinkage
217 case lltok::kw_appending: // OptionalLinkage
218 case lltok::kw_common: // OptionalLinkage
219 case lltok::kw_extern_weak: // OptionalLinkage
220 case lltok::kw_external: // OptionalLinkage
221 case lltok::kw_default: // OptionalVisibility
222 case lltok::kw_hidden: // OptionalVisibility
223 case lltok::kw_protected: // OptionalVisibility
224 case lltok::kw_dllimport: // OptionalDLLStorageClass
225 case lltok::kw_dllexport: // OptionalDLLStorageClass
226 case lltok::kw_thread_local: // OptionalThreadLocal
227 case lltok::kw_addrspace: // OptionalAddrSpace
228 case lltok::kw_constant: // GlobalType
229 case lltok::kw_global: { // GlobalType
230 unsigned Linkage, Visibility, DLLStorageClass;
232 GlobalVariable::ThreadLocalMode TLM;
234 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
235 ParseOptionalVisibility(Visibility) ||
236 ParseOptionalDLLStorageClass(DLLStorageClass) ||
237 ParseOptionalThreadLocal(TLM) ||
238 parseOptionalUnnamedAddr(UnnamedAddr) ||
239 ParseGlobal("", SMLoc(), Linkage, HasLinkage, Visibility,
240 DLLStorageClass, TLM, UnnamedAddr))
245 case lltok::kw_attributes: if (ParseUnnamedAttrGrp()) return true; break;
246 case lltok::kw_uselistorder: if (ParseUseListOrder()) return true; break;
247 case lltok::kw_uselistorder_bb:
248 if (ParseUseListOrderBB()) return true; break;
255 /// ::= 'module' 'asm' STRINGCONSTANT
256 bool LLParser::ParseModuleAsm() {
257 assert(Lex.getKind() == lltok::kw_module);
261 if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
262 ParseStringConstant(AsmStr)) return true;
264 M->appendModuleInlineAsm(AsmStr);
269 /// ::= 'target' 'triple' '=' STRINGCONSTANT
270 /// ::= 'target' 'datalayout' '=' STRINGCONSTANT
271 bool LLParser::ParseTargetDefinition() {
272 assert(Lex.getKind() == lltok::kw_target);
275 default: return TokError("unknown target property");
276 case lltok::kw_triple:
278 if (ParseToken(lltok::equal, "expected '=' after target triple") ||
279 ParseStringConstant(Str))
281 M->setTargetTriple(Str);
283 case lltok::kw_datalayout:
285 if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
286 ParseStringConstant(Str))
288 M->setDataLayout(Str);
294 /// ::= 'deplibs' '=' '[' ']'
295 /// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
296 /// FIXME: Remove in 4.0. Currently parse, but ignore.
297 bool LLParser::ParseDepLibs() {
298 assert(Lex.getKind() == lltok::kw_deplibs);
300 if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
301 ParseToken(lltok::lsquare, "expected '=' after deplibs"))
304 if (EatIfPresent(lltok::rsquare))
309 if (ParseStringConstant(Str)) return true;
310 } while (EatIfPresent(lltok::comma));
312 return ParseToken(lltok::rsquare, "expected ']' at end of list");
315 /// ParseUnnamedType:
316 /// ::= LocalVarID '=' 'type' type
317 bool LLParser::ParseUnnamedType() {
318 LocTy TypeLoc = Lex.getLoc();
319 unsigned TypeID = Lex.getUIntVal();
320 Lex.Lex(); // eat LocalVarID;
322 if (ParseToken(lltok::equal, "expected '=' after name") ||
323 ParseToken(lltok::kw_type, "expected 'type' after '='"))
326 if (TypeID >= NumberedTypes.size())
327 NumberedTypes.resize(TypeID+1);
329 Type *Result = nullptr;
330 if (ParseStructDefinition(TypeLoc, "",
331 NumberedTypes[TypeID], Result)) return true;
333 if (!isa<StructType>(Result)) {
334 std::pair<Type*, LocTy> &Entry = NumberedTypes[TypeID];
336 return Error(TypeLoc, "non-struct types may not be recursive");
337 Entry.first = Result;
338 Entry.second = SMLoc();
346 /// ::= LocalVar '=' 'type' type
347 bool LLParser::ParseNamedType() {
348 std::string Name = Lex.getStrVal();
349 LocTy NameLoc = Lex.getLoc();
350 Lex.Lex(); // eat LocalVar.
352 if (ParseToken(lltok::equal, "expected '=' after name") ||
353 ParseToken(lltok::kw_type, "expected 'type' after name"))
356 Type *Result = nullptr;
357 if (ParseStructDefinition(NameLoc, Name,
358 NamedTypes[Name], Result)) return true;
360 if (!isa<StructType>(Result)) {
361 std::pair<Type*, LocTy> &Entry = NamedTypes[Name];
363 return Error(NameLoc, "non-struct types may not be recursive");
364 Entry.first = Result;
365 Entry.second = SMLoc();
373 /// ::= 'declare' FunctionHeader
374 bool LLParser::ParseDeclare() {
375 assert(Lex.getKind() == lltok::kw_declare);
379 return ParseFunctionHeader(F, false);
383 /// ::= 'define' FunctionHeader '{' ...
384 bool LLParser::ParseDefine() {
385 assert(Lex.getKind() == lltok::kw_define);
389 return ParseFunctionHeader(F, true) ||
390 ParseFunctionBody(*F);
396 bool LLParser::ParseGlobalType(bool &IsConstant) {
397 if (Lex.getKind() == lltok::kw_constant)
399 else if (Lex.getKind() == lltok::kw_global)
403 return TokError("expected 'global' or 'constant'");
409 /// ParseUnnamedGlobal:
410 /// OptionalVisibility ALIAS ...
411 /// OptionalLinkage OptionalVisibility OptionalDLLStorageClass
412 /// ... -> global variable
413 /// GlobalID '=' OptionalVisibility ALIAS ...
414 /// GlobalID '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
415 /// ... -> global variable
416 bool LLParser::ParseUnnamedGlobal() {
417 unsigned VarID = NumberedVals.size();
419 LocTy NameLoc = Lex.getLoc();
421 // Handle the GlobalID form.
422 if (Lex.getKind() == lltok::GlobalID) {
423 if (Lex.getUIntVal() != VarID)
424 return Error(Lex.getLoc(), "variable expected to be numbered '%" +
426 Lex.Lex(); // eat GlobalID;
428 if (ParseToken(lltok::equal, "expected '=' after name"))
433 unsigned Linkage, Visibility, DLLStorageClass;
434 GlobalVariable::ThreadLocalMode TLM;
436 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
437 ParseOptionalVisibility(Visibility) ||
438 ParseOptionalDLLStorageClass(DLLStorageClass) ||
439 ParseOptionalThreadLocal(TLM) ||
440 parseOptionalUnnamedAddr(UnnamedAddr))
443 if (Lex.getKind() != lltok::kw_alias)
444 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility,
445 DLLStorageClass, TLM, UnnamedAddr);
446 return ParseAlias(Name, NameLoc, Linkage, Visibility, DLLStorageClass, TLM,
450 /// ParseNamedGlobal:
451 /// GlobalVar '=' OptionalVisibility ALIAS ...
452 /// GlobalVar '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
453 /// ... -> global variable
454 bool LLParser::ParseNamedGlobal() {
455 assert(Lex.getKind() == lltok::GlobalVar);
456 LocTy NameLoc = Lex.getLoc();
457 std::string Name = Lex.getStrVal();
461 unsigned Linkage, Visibility, DLLStorageClass;
462 GlobalVariable::ThreadLocalMode TLM;
464 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
465 ParseOptionalLinkage(Linkage, HasLinkage) ||
466 ParseOptionalVisibility(Visibility) ||
467 ParseOptionalDLLStorageClass(DLLStorageClass) ||
468 ParseOptionalThreadLocal(TLM) ||
469 parseOptionalUnnamedAddr(UnnamedAddr))
472 if (Lex.getKind() != lltok::kw_alias)
473 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility,
474 DLLStorageClass, TLM, UnnamedAddr);
476 return ParseAlias(Name, NameLoc, Linkage, Visibility, DLLStorageClass, TLM,
480 bool LLParser::parseComdat() {
481 assert(Lex.getKind() == lltok::ComdatVar);
482 std::string Name = Lex.getStrVal();
483 LocTy NameLoc = Lex.getLoc();
486 if (ParseToken(lltok::equal, "expected '=' here"))
489 if (ParseToken(lltok::kw_comdat, "expected comdat keyword"))
490 return TokError("expected comdat type");
492 Comdat::SelectionKind SK;
493 switch (Lex.getKind()) {
495 return TokError("unknown selection kind");
499 case lltok::kw_exactmatch:
500 SK = Comdat::ExactMatch;
502 case lltok::kw_largest:
503 SK = Comdat::Largest;
505 case lltok::kw_noduplicates:
506 SK = Comdat::NoDuplicates;
508 case lltok::kw_samesize:
509 SK = Comdat::SameSize;
514 // See if the comdat was forward referenced, if so, use the comdat.
515 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
516 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
517 if (I != ComdatSymTab.end() && !ForwardRefComdats.erase(Name))
518 return Error(NameLoc, "redefinition of comdat '$" + Name + "'");
521 if (I != ComdatSymTab.end())
524 C = M->getOrInsertComdat(Name);
525 C->setSelectionKind(SK);
531 // ::= '!' STRINGCONSTANT
532 bool LLParser::ParseMDString(MDString *&Result) {
534 if (ParseStringConstant(Str)) return true;
535 llvm::UpgradeMDStringConstant(Str);
536 Result = MDString::get(Context, Str);
541 // ::= '!' MDNodeNumber
543 /// This version of ParseMDNodeID returns the slot number and null in the case
544 /// of a forward reference.
545 bool LLParser::ParseMDNodeID(MDNode *&Result, unsigned &SlotNo) {
546 // !{ ..., !42, ... }
547 if (ParseUInt32(SlotNo)) return true;
549 // Check existing MDNode.
550 if (SlotNo < NumberedMetadata.size() && NumberedMetadata[SlotNo] != nullptr)
551 Result = NumberedMetadata[SlotNo];
557 bool LLParser::ParseMDNodeID(MDNode *&Result) {
558 // !{ ..., !42, ... }
560 if (ParseMDNodeID(Result, MID)) return true;
562 // If not a forward reference, just return it now.
563 if (Result) return false;
565 // Otherwise, create MDNode forward reference.
566 MDNodeFwdDecl *FwdNode = MDNode::getTemporary(Context, None);
567 ForwardRefMDNodes[MID] = std::make_pair(FwdNode, Lex.getLoc());
569 if (NumberedMetadata.size() <= MID)
570 NumberedMetadata.resize(MID+1);
571 NumberedMetadata[MID].reset(FwdNode);
576 /// ParseNamedMetadata:
577 /// !foo = !{ !1, !2 }
578 bool LLParser::ParseNamedMetadata() {
579 assert(Lex.getKind() == lltok::MetadataVar);
580 std::string Name = Lex.getStrVal();
583 if (ParseToken(lltok::equal, "expected '=' here") ||
584 ParseToken(lltok::exclaim, "Expected '!' here") ||
585 ParseToken(lltok::lbrace, "Expected '{' here"))
588 NamedMDNode *NMD = M->getOrInsertNamedMetadata(Name);
589 if (Lex.getKind() != lltok::rbrace)
591 if (ParseToken(lltok::exclaim, "Expected '!' here"))
595 if (ParseMDNodeID(N)) return true;
597 } while (EatIfPresent(lltok::comma));
599 if (ParseToken(lltok::rbrace, "expected end of metadata node"))
605 /// ParseStandaloneMetadata:
607 bool LLParser::ParseStandaloneMetadata() {
608 assert(Lex.getKind() == lltok::exclaim);
610 unsigned MetadataID = 0;
615 if (ParseUInt32(MetadataID) ||
616 ParseToken(lltok::equal, "expected '=' here") ||
617 ParseType(Ty, TyLoc) ||
618 ParseToken(lltok::exclaim, "Expected '!' here") ||
622 // See if this was forward referenced, if so, handle it.
623 auto FI = ForwardRefMDNodes.find(MetadataID);
624 if (FI != ForwardRefMDNodes.end()) {
625 auto *Temp = FI->second.first;
626 Temp->replaceAllUsesWith(Init);
627 MDNode::deleteTemporary(Temp);
628 ForwardRefMDNodes.erase(FI);
630 assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work");
632 if (MetadataID >= NumberedMetadata.size())
633 NumberedMetadata.resize(MetadataID+1);
635 if (NumberedMetadata[MetadataID] != nullptr)
636 return TokError("Metadata id is already used");
637 NumberedMetadata[MetadataID].reset(Init);
643 static bool isValidVisibilityForLinkage(unsigned V, unsigned L) {
644 return !GlobalValue::isLocalLinkage((GlobalValue::LinkageTypes)L) ||
645 (GlobalValue::VisibilityTypes)V == GlobalValue::DefaultVisibility;
649 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility
650 /// OptionalDLLStorageClass OptionalThreadLocal
651 /// OptionalUnNammedAddr 'alias' Aliasee
656 /// Everything through OptionalUnNammedAddr has already been parsed.
658 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc, unsigned L,
659 unsigned Visibility, unsigned DLLStorageClass,
660 GlobalVariable::ThreadLocalMode TLM,
662 assert(Lex.getKind() == lltok::kw_alias);
665 GlobalValue::LinkageTypes Linkage = (GlobalValue::LinkageTypes) L;
667 if(!GlobalAlias::isValidLinkage(Linkage))
668 return Error(NameLoc, "invalid linkage type for alias");
670 if (!isValidVisibilityForLinkage(Visibility, L))
671 return Error(NameLoc,
672 "symbol with local linkage must have default visibility");
675 LocTy AliaseeLoc = Lex.getLoc();
676 if (Lex.getKind() != lltok::kw_bitcast &&
677 Lex.getKind() != lltok::kw_getelementptr &&
678 Lex.getKind() != lltok::kw_addrspacecast &&
679 Lex.getKind() != lltok::kw_inttoptr) {
680 if (ParseGlobalTypeAndValue(Aliasee))
683 // The bitcast dest type is not present, it is implied by the dest type.
687 if (ID.Kind != ValID::t_Constant)
688 return Error(AliaseeLoc, "invalid aliasee");
689 Aliasee = ID.ConstantVal;
692 Type *AliaseeType = Aliasee->getType();
693 auto *PTy = dyn_cast<PointerType>(AliaseeType);
695 return Error(AliaseeLoc, "An alias must have pointer type");
696 Type *Ty = PTy->getElementType();
697 unsigned AddrSpace = PTy->getAddressSpace();
699 // Okay, create the alias but do not insert it into the module yet.
700 std::unique_ptr<GlobalAlias> GA(
701 GlobalAlias::create(Ty, AddrSpace, (GlobalValue::LinkageTypes)Linkage,
702 Name, Aliasee, /*Parent*/ nullptr));
703 GA->setThreadLocalMode(TLM);
704 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
705 GA->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
706 GA->setUnnamedAddr(UnnamedAddr);
708 // See if this value already exists in the symbol table. If so, it is either
709 // a redefinition or a definition of a forward reference.
710 if (GlobalValue *Val = M->getNamedValue(Name)) {
711 // See if this was a redefinition. If so, there is no entry in
713 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
714 I = ForwardRefVals.find(Name);
715 if (I == ForwardRefVals.end())
716 return Error(NameLoc, "redefinition of global named '@" + Name + "'");
718 // Otherwise, this was a definition of forward ref. Verify that types
720 if (Val->getType() != GA->getType())
721 return Error(NameLoc,
722 "forward reference and definition of alias have different types");
724 // If they agree, just RAUW the old value with the alias and remove the
726 Val->replaceAllUsesWith(GA.get());
727 Val->eraseFromParent();
728 ForwardRefVals.erase(I);
731 // Insert into the module, we know its name won't collide now.
732 M->getAliasList().push_back(GA.get());
733 assert(GA->getName() == Name && "Should not be a name conflict!");
735 // The module owns this now
742 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
743 /// OptionalThreadLocal OptionalUnNammedAddr OptionalAddrSpace
744 /// OptionalExternallyInitialized GlobalType Type Const
745 /// ::= OptionalLinkage OptionalVisibility OptionalDLLStorageClass
746 /// OptionalThreadLocal OptionalUnNammedAddr OptionalAddrSpace
747 /// OptionalExternallyInitialized GlobalType Type Const
749 /// Everything up to and including OptionalUnNammedAddr has been parsed
752 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
753 unsigned Linkage, bool HasLinkage,
754 unsigned Visibility, unsigned DLLStorageClass,
755 GlobalVariable::ThreadLocalMode TLM,
757 if (!isValidVisibilityForLinkage(Visibility, Linkage))
758 return Error(NameLoc,
759 "symbol with local linkage must have default visibility");
762 bool IsConstant, IsExternallyInitialized;
763 LocTy IsExternallyInitializedLoc;
767 if (ParseOptionalAddrSpace(AddrSpace) ||
768 ParseOptionalToken(lltok::kw_externally_initialized,
769 IsExternallyInitialized,
770 &IsExternallyInitializedLoc) ||
771 ParseGlobalType(IsConstant) ||
772 ParseType(Ty, TyLoc))
775 // If the linkage is specified and is external, then no initializer is
777 Constant *Init = nullptr;
778 if (!HasLinkage || (Linkage != GlobalValue::ExternalWeakLinkage &&
779 Linkage != GlobalValue::ExternalLinkage)) {
780 if (ParseGlobalValue(Ty, Init))
784 if (Ty->isFunctionTy() || Ty->isLabelTy())
785 return Error(TyLoc, "invalid type for global variable");
787 GlobalValue *GVal = nullptr;
789 // See if the global was forward referenced, if so, use the global.
791 GVal = M->getNamedValue(Name);
793 if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
794 return Error(NameLoc, "redefinition of global '@" + Name + "'");
797 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
798 I = ForwardRefValIDs.find(NumberedVals.size());
799 if (I != ForwardRefValIDs.end()) {
800 GVal = I->second.first;
801 ForwardRefValIDs.erase(I);
807 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, nullptr,
808 Name, nullptr, GlobalVariable::NotThreadLocal,
811 if (GVal->getType()->getElementType() != Ty)
813 "forward reference and definition of global have different types");
815 GV = cast<GlobalVariable>(GVal);
817 // Move the forward-reference to the correct spot in the module.
818 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
822 NumberedVals.push_back(GV);
824 // Set the parsed properties on the global.
826 GV->setInitializer(Init);
827 GV->setConstant(IsConstant);
828 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
829 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
830 GV->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
831 GV->setExternallyInitialized(IsExternallyInitialized);
832 GV->setThreadLocalMode(TLM);
833 GV->setUnnamedAddr(UnnamedAddr);
835 // Parse attributes on the global.
836 while (Lex.getKind() == lltok::comma) {
839 if (Lex.getKind() == lltok::kw_section) {
841 GV->setSection(Lex.getStrVal());
842 if (ParseToken(lltok::StringConstant, "expected global section string"))
844 } else if (Lex.getKind() == lltok::kw_align) {
846 if (ParseOptionalAlignment(Alignment)) return true;
847 GV->setAlignment(Alignment);
850 if (parseOptionalComdat(C))
855 return TokError("unknown global variable property!");
862 /// ParseUnnamedAttrGrp
863 /// ::= 'attributes' AttrGrpID '=' '{' AttrValPair+ '}'
864 bool LLParser::ParseUnnamedAttrGrp() {
865 assert(Lex.getKind() == lltok::kw_attributes);
866 LocTy AttrGrpLoc = Lex.getLoc();
869 if (Lex.getKind() != lltok::AttrGrpID)
870 return TokError("expected attribute group id");
872 unsigned VarID = Lex.getUIntVal();
873 std::vector<unsigned> unused;
877 if (ParseToken(lltok::equal, "expected '=' here") ||
878 ParseToken(lltok::lbrace, "expected '{' here") ||
879 ParseFnAttributeValuePairs(NumberedAttrBuilders[VarID], unused, true,
881 ParseToken(lltok::rbrace, "expected end of attribute group"))
884 if (!NumberedAttrBuilders[VarID].hasAttributes())
885 return Error(AttrGrpLoc, "attribute group has no attributes");
890 /// ParseFnAttributeValuePairs
891 /// ::= <attr> | <attr> '=' <value>
892 bool LLParser::ParseFnAttributeValuePairs(AttrBuilder &B,
893 std::vector<unsigned> &FwdRefAttrGrps,
894 bool inAttrGrp, LocTy &BuiltinLoc) {
895 bool HaveError = false;
900 lltok::Kind Token = Lex.getKind();
901 if (Token == lltok::kw_builtin)
902 BuiltinLoc = Lex.getLoc();
905 if (!inAttrGrp) return HaveError;
906 return Error(Lex.getLoc(), "unterminated attribute group");
911 case lltok::AttrGrpID: {
912 // Allow a function to reference an attribute group:
914 // define void @foo() #1 { ... }
918 "cannot have an attribute group reference in an attribute group");
920 unsigned AttrGrpNum = Lex.getUIntVal();
921 if (inAttrGrp) break;
923 // Save the reference to the attribute group. We'll fill it in later.
924 FwdRefAttrGrps.push_back(AttrGrpNum);
927 // Target-dependent attributes:
928 case lltok::StringConstant: {
929 std::string Attr = Lex.getStrVal();
932 if (EatIfPresent(lltok::equal) &&
933 ParseStringConstant(Val))
936 B.addAttribute(Attr, Val);
940 // Target-independent attributes:
941 case lltok::kw_align: {
942 // As a hack, we allow function alignment to be initially parsed as an
943 // attribute on a function declaration/definition or added to an attribute
944 // group and later moved to the alignment field.
948 if (ParseToken(lltok::equal, "expected '=' here") ||
949 ParseUInt32(Alignment))
952 if (ParseOptionalAlignment(Alignment))
955 B.addAlignmentAttr(Alignment);
958 case lltok::kw_alignstack: {
962 if (ParseToken(lltok::equal, "expected '=' here") ||
963 ParseUInt32(Alignment))
966 if (ParseOptionalStackAlignment(Alignment))
969 B.addStackAlignmentAttr(Alignment);
972 case lltok::kw_alwaysinline: B.addAttribute(Attribute::AlwaysInline); break;
973 case lltok::kw_builtin: B.addAttribute(Attribute::Builtin); break;
974 case lltok::kw_cold: B.addAttribute(Attribute::Cold); break;
975 case lltok::kw_inlinehint: B.addAttribute(Attribute::InlineHint); break;
976 case lltok::kw_jumptable: B.addAttribute(Attribute::JumpTable); break;
977 case lltok::kw_minsize: B.addAttribute(Attribute::MinSize); break;
978 case lltok::kw_naked: B.addAttribute(Attribute::Naked); break;
979 case lltok::kw_nobuiltin: B.addAttribute(Attribute::NoBuiltin); break;
980 case lltok::kw_noduplicate: B.addAttribute(Attribute::NoDuplicate); break;
981 case lltok::kw_noimplicitfloat: B.addAttribute(Attribute::NoImplicitFloat); break;
982 case lltok::kw_noinline: B.addAttribute(Attribute::NoInline); break;
983 case lltok::kw_nonlazybind: B.addAttribute(Attribute::NonLazyBind); break;
984 case lltok::kw_noredzone: B.addAttribute(Attribute::NoRedZone); break;
985 case lltok::kw_noreturn: B.addAttribute(Attribute::NoReturn); break;
986 case lltok::kw_nounwind: B.addAttribute(Attribute::NoUnwind); break;
987 case lltok::kw_optnone: B.addAttribute(Attribute::OptimizeNone); break;
988 case lltok::kw_optsize: B.addAttribute(Attribute::OptimizeForSize); break;
989 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
990 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
991 case lltok::kw_returns_twice: B.addAttribute(Attribute::ReturnsTwice); break;
992 case lltok::kw_ssp: B.addAttribute(Attribute::StackProtect); break;
993 case lltok::kw_sspreq: B.addAttribute(Attribute::StackProtectReq); break;
994 case lltok::kw_sspstrong: B.addAttribute(Attribute::StackProtectStrong); break;
995 case lltok::kw_sanitize_address: B.addAttribute(Attribute::SanitizeAddress); break;
996 case lltok::kw_sanitize_thread: B.addAttribute(Attribute::SanitizeThread); break;
997 case lltok::kw_sanitize_memory: B.addAttribute(Attribute::SanitizeMemory); break;
998 case lltok::kw_uwtable: B.addAttribute(Attribute::UWTable); break;
1001 case lltok::kw_inreg:
1002 case lltok::kw_signext:
1003 case lltok::kw_zeroext:
1006 "invalid use of attribute on a function");
1008 case lltok::kw_byval:
1009 case lltok::kw_dereferenceable:
1010 case lltok::kw_inalloca:
1011 case lltok::kw_nest:
1012 case lltok::kw_noalias:
1013 case lltok::kw_nocapture:
1014 case lltok::kw_nonnull:
1015 case lltok::kw_returned:
1016 case lltok::kw_sret:
1019 "invalid use of parameter-only attribute on a function");
1027 //===----------------------------------------------------------------------===//
1028 // GlobalValue Reference/Resolution Routines.
1029 //===----------------------------------------------------------------------===//
1031 /// GetGlobalVal - Get a value with the specified name or ID, creating a
1032 /// forward reference record if needed. This can return null if the value
1033 /// exists but does not have the right type.
1034 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
1036 PointerType *PTy = dyn_cast<PointerType>(Ty);
1038 Error(Loc, "global variable reference must have pointer type");
1042 // Look this name up in the normal function symbol table.
1044 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
1046 // If this is a forward reference for the value, see if we already created a
1047 // forward ref record.
1049 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
1050 I = ForwardRefVals.find(Name);
1051 if (I != ForwardRefVals.end())
1052 Val = I->second.first;
1055 // If we have the value in the symbol table or fwd-ref table, return it.
1057 if (Val->getType() == Ty) return Val;
1058 Error(Loc, "'@" + Name + "' defined with type '" +
1059 getTypeString(Val->getType()) + "'");
1063 // Otherwise, create a new forward reference for this value and remember it.
1064 GlobalValue *FwdVal;
1065 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1066 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
1068 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1069 GlobalValue::ExternalWeakLinkage, nullptr, Name,
1070 nullptr, GlobalVariable::NotThreadLocal,
1071 PTy->getAddressSpace());
1073 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1077 GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
1078 PointerType *PTy = dyn_cast<PointerType>(Ty);
1080 Error(Loc, "global variable reference must have pointer type");
1084 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
1086 // If this is a forward reference for the value, see if we already created a
1087 // forward ref record.
1089 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
1090 I = ForwardRefValIDs.find(ID);
1091 if (I != ForwardRefValIDs.end())
1092 Val = I->second.first;
1095 // If we have the value in the symbol table or fwd-ref table, return it.
1097 if (Val->getType() == Ty) return Val;
1098 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
1099 getTypeString(Val->getType()) + "'");
1103 // Otherwise, create a new forward reference for this value and remember it.
1104 GlobalValue *FwdVal;
1105 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1106 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
1108 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1109 GlobalValue::ExternalWeakLinkage, nullptr, "");
1111 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1116 //===----------------------------------------------------------------------===//
1117 // Comdat Reference/Resolution Routines.
1118 //===----------------------------------------------------------------------===//
1120 Comdat *LLParser::getComdat(const std::string &Name, LocTy Loc) {
1121 // Look this name up in the comdat symbol table.
1122 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
1123 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
1124 if (I != ComdatSymTab.end())
1127 // Otherwise, create a new forward reference for this value and remember it.
1128 Comdat *C = M->getOrInsertComdat(Name);
1129 ForwardRefComdats[Name] = Loc;
1134 //===----------------------------------------------------------------------===//
1136 //===----------------------------------------------------------------------===//
1138 /// ParseToken - If the current token has the specified kind, eat it and return
1139 /// success. Otherwise, emit the specified error and return failure.
1140 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
1141 if (Lex.getKind() != T)
1142 return TokError(ErrMsg);
1147 /// ParseStringConstant
1148 /// ::= StringConstant
1149 bool LLParser::ParseStringConstant(std::string &Result) {
1150 if (Lex.getKind() != lltok::StringConstant)
1151 return TokError("expected string constant");
1152 Result = Lex.getStrVal();
1159 bool LLParser::ParseUInt32(unsigned &Val) {
1160 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1161 return TokError("expected integer");
1162 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
1163 if (Val64 != unsigned(Val64))
1164 return TokError("expected 32-bit integer (too large)");
1172 bool LLParser::ParseUInt64(uint64_t &Val) {
1173 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1174 return TokError("expected integer");
1175 Val = Lex.getAPSIntVal().getLimitedValue();
1181 /// := 'localdynamic'
1182 /// := 'initialexec'
1184 bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
1185 switch (Lex.getKind()) {
1187 return TokError("expected localdynamic, initialexec or localexec");
1188 case lltok::kw_localdynamic:
1189 TLM = GlobalVariable::LocalDynamicTLSModel;
1191 case lltok::kw_initialexec:
1192 TLM = GlobalVariable::InitialExecTLSModel;
1194 case lltok::kw_localexec:
1195 TLM = GlobalVariable::LocalExecTLSModel;
1203 /// ParseOptionalThreadLocal
1205 /// := 'thread_local'
1206 /// := 'thread_local' '(' tlsmodel ')'
1207 bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
1208 TLM = GlobalVariable::NotThreadLocal;
1209 if (!EatIfPresent(lltok::kw_thread_local))
1212 TLM = GlobalVariable::GeneralDynamicTLSModel;
1213 if (Lex.getKind() == lltok::lparen) {
1215 return ParseTLSModel(TLM) ||
1216 ParseToken(lltok::rparen, "expected ')' after thread local model");
1221 /// ParseOptionalAddrSpace
1223 /// := 'addrspace' '(' uint32 ')'
1224 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
1226 if (!EatIfPresent(lltok::kw_addrspace))
1228 return ParseToken(lltok::lparen, "expected '(' in address space") ||
1229 ParseUInt32(AddrSpace) ||
1230 ParseToken(lltok::rparen, "expected ')' in address space");
1233 /// ParseOptionalParamAttrs - Parse a potentially empty list of parameter attributes.
1234 bool LLParser::ParseOptionalParamAttrs(AttrBuilder &B) {
1235 bool HaveError = false;
1240 lltok::Kind Token = Lex.getKind();
1242 default: // End of attributes.
1244 case lltok::kw_align: {
1246 if (ParseOptionalAlignment(Alignment))
1248 B.addAlignmentAttr(Alignment);
1251 case lltok::kw_byval: B.addAttribute(Attribute::ByVal); break;
1252 case lltok::kw_dereferenceable: {
1254 if (ParseOptionalDereferenceableBytes(Bytes))
1256 B.addDereferenceableAttr(Bytes);
1259 case lltok::kw_inalloca: B.addAttribute(Attribute::InAlloca); break;
1260 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1261 case lltok::kw_nest: B.addAttribute(Attribute::Nest); break;
1262 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1263 case lltok::kw_nocapture: B.addAttribute(Attribute::NoCapture); break;
1264 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1265 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1266 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1267 case lltok::kw_returned: B.addAttribute(Attribute::Returned); break;
1268 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1269 case lltok::kw_sret: B.addAttribute(Attribute::StructRet); break;
1270 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1272 case lltok::kw_alignstack:
1273 case lltok::kw_alwaysinline:
1274 case lltok::kw_builtin:
1275 case lltok::kw_inlinehint:
1276 case lltok::kw_jumptable:
1277 case lltok::kw_minsize:
1278 case lltok::kw_naked:
1279 case lltok::kw_nobuiltin:
1280 case lltok::kw_noduplicate:
1281 case lltok::kw_noimplicitfloat:
1282 case lltok::kw_noinline:
1283 case lltok::kw_nonlazybind:
1284 case lltok::kw_noredzone:
1285 case lltok::kw_noreturn:
1286 case lltok::kw_nounwind:
1287 case lltok::kw_optnone:
1288 case lltok::kw_optsize:
1289 case lltok::kw_returns_twice:
1290 case lltok::kw_sanitize_address:
1291 case lltok::kw_sanitize_memory:
1292 case lltok::kw_sanitize_thread:
1294 case lltok::kw_sspreq:
1295 case lltok::kw_sspstrong:
1296 case lltok::kw_uwtable:
1297 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1305 /// ParseOptionalReturnAttrs - Parse a potentially empty list of return attributes.
1306 bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
1307 bool HaveError = false;
1312 lltok::Kind Token = Lex.getKind();
1314 default: // End of attributes.
1316 case lltok::kw_dereferenceable: {
1318 if (ParseOptionalDereferenceableBytes(Bytes))
1320 B.addDereferenceableAttr(Bytes);
1323 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1324 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1325 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1326 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1327 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1330 case lltok::kw_align:
1331 case lltok::kw_byval:
1332 case lltok::kw_inalloca:
1333 case lltok::kw_nest:
1334 case lltok::kw_nocapture:
1335 case lltok::kw_returned:
1336 case lltok::kw_sret:
1337 HaveError |= Error(Lex.getLoc(), "invalid use of parameter-only attribute");
1340 case lltok::kw_alignstack:
1341 case lltok::kw_alwaysinline:
1342 case lltok::kw_builtin:
1343 case lltok::kw_cold:
1344 case lltok::kw_inlinehint:
1345 case lltok::kw_jumptable:
1346 case lltok::kw_minsize:
1347 case lltok::kw_naked:
1348 case lltok::kw_nobuiltin:
1349 case lltok::kw_noduplicate:
1350 case lltok::kw_noimplicitfloat:
1351 case lltok::kw_noinline:
1352 case lltok::kw_nonlazybind:
1353 case lltok::kw_noredzone:
1354 case lltok::kw_noreturn:
1355 case lltok::kw_nounwind:
1356 case lltok::kw_optnone:
1357 case lltok::kw_optsize:
1358 case lltok::kw_returns_twice:
1359 case lltok::kw_sanitize_address:
1360 case lltok::kw_sanitize_memory:
1361 case lltok::kw_sanitize_thread:
1363 case lltok::kw_sspreq:
1364 case lltok::kw_sspstrong:
1365 case lltok::kw_uwtable:
1366 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1369 case lltok::kw_readnone:
1370 case lltok::kw_readonly:
1371 HaveError |= Error(Lex.getLoc(), "invalid use of attribute on return type");
1378 /// ParseOptionalLinkage
1385 /// ::= 'linkonce_odr'
1386 /// ::= 'available_externally'
1389 /// ::= 'extern_weak'
1391 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1393 switch (Lex.getKind()) {
1394 default: Res=GlobalValue::ExternalLinkage; return false;
1395 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1396 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1397 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1398 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1399 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1400 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1401 case lltok::kw_available_externally:
1402 Res = GlobalValue::AvailableExternallyLinkage;
1404 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1405 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1406 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1407 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1414 /// ParseOptionalVisibility
1420 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1421 switch (Lex.getKind()) {
1422 default: Res = GlobalValue::DefaultVisibility; return false;
1423 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1424 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1425 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1431 /// ParseOptionalDLLStorageClass
1436 bool LLParser::ParseOptionalDLLStorageClass(unsigned &Res) {
1437 switch (Lex.getKind()) {
1438 default: Res = GlobalValue::DefaultStorageClass; return false;
1439 case lltok::kw_dllimport: Res = GlobalValue::DLLImportStorageClass; break;
1440 case lltok::kw_dllexport: Res = GlobalValue::DLLExportStorageClass; break;
1446 /// ParseOptionalCallingConv
1450 /// ::= 'intel_ocl_bicc'
1452 /// ::= 'x86_stdcallcc'
1453 /// ::= 'x86_fastcallcc'
1454 /// ::= 'x86_thiscallcc'
1455 /// ::= 'x86_vectorcallcc'
1456 /// ::= 'arm_apcscc'
1457 /// ::= 'arm_aapcscc'
1458 /// ::= 'arm_aapcs_vfpcc'
1459 /// ::= 'msp430_intrcc'
1460 /// ::= 'ptx_kernel'
1461 /// ::= 'ptx_device'
1463 /// ::= 'spir_kernel'
1464 /// ::= 'x86_64_sysvcc'
1465 /// ::= 'x86_64_win64cc'
1466 /// ::= 'webkit_jscc'
1468 /// ::= 'preserve_mostcc'
1469 /// ::= 'preserve_allcc'
1473 bool LLParser::ParseOptionalCallingConv(unsigned &CC) {
1474 switch (Lex.getKind()) {
1475 default: CC = CallingConv::C; return false;
1476 case lltok::kw_ccc: CC = CallingConv::C; break;
1477 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1478 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1479 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1480 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1481 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1482 case lltok::kw_x86_vectorcallcc:CC = CallingConv::X86_VectorCall; break;
1483 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1484 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1485 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1486 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1487 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1488 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1489 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1490 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1491 case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1492 case lltok::kw_x86_64_sysvcc: CC = CallingConv::X86_64_SysV; break;
1493 case lltok::kw_x86_64_win64cc: CC = CallingConv::X86_64_Win64; break;
1494 case lltok::kw_webkit_jscc: CC = CallingConv::WebKit_JS; break;
1495 case lltok::kw_anyregcc: CC = CallingConv::AnyReg; break;
1496 case lltok::kw_preserve_mostcc:CC = CallingConv::PreserveMost; break;
1497 case lltok::kw_preserve_allcc: CC = CallingConv::PreserveAll; break;
1498 case lltok::kw_ghccc: CC = CallingConv::GHC; break;
1499 case lltok::kw_cc: {
1501 return ParseUInt32(CC);
1509 /// ParseInstructionMetadata
1510 /// ::= !dbg !42 (',' !dbg !57)*
1511 bool LLParser::ParseInstructionMetadata(Instruction *Inst,
1512 PerFunctionState *PFS) {
1514 if (Lex.getKind() != lltok::MetadataVar)
1515 return TokError("expected metadata after comma");
1517 std::string Name = Lex.getStrVal();
1518 unsigned MDK = M->getMDKindID(Name);
1522 SMLoc Loc = Lex.getLoc();
1524 if (ParseToken(lltok::exclaim, "expected '!' here"))
1527 // This code is similar to that of ParseMetadata, however it needs to
1528 // have special-case code for a forward reference; see the comments on
1529 // ForwardRefInstMetadata for details. Also, MDStrings are not supported
1530 // at the top level here.
1531 if (Lex.getKind() == lltok::lbrace) {
1535 Inst->setMetadata(MDK, N);
1537 unsigned NodeID = 0;
1538 if (ParseMDNodeID(Node, NodeID))
1541 // If we got the node, add it to the instruction.
1542 Inst->setMetadata(MDK, Node);
1544 MDRef R = { Loc, MDK, NodeID };
1545 // Otherwise, remember that this should be resolved later.
1546 ForwardRefInstMetadata[Inst].push_back(R);
1550 if (MDK == LLVMContext::MD_tbaa)
1551 InstsWithTBAATag.push_back(Inst);
1553 // If this is the end of the list, we're done.
1554 } while (EatIfPresent(lltok::comma));
1558 /// ParseOptionalAlignment
1561 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1563 if (!EatIfPresent(lltok::kw_align))
1565 LocTy AlignLoc = Lex.getLoc();
1566 if (ParseUInt32(Alignment)) return true;
1567 if (!isPowerOf2_32(Alignment))
1568 return Error(AlignLoc, "alignment is not a power of two");
1569 if (Alignment > Value::MaximumAlignment)
1570 return Error(AlignLoc, "huge alignments are not supported yet");
1574 /// ParseOptionalDereferenceableBytes
1576 /// ::= 'dereferenceable' '(' 4 ')'
1577 bool LLParser::ParseOptionalDereferenceableBytes(uint64_t &Bytes) {
1579 if (!EatIfPresent(lltok::kw_dereferenceable))
1581 LocTy ParenLoc = Lex.getLoc();
1582 if (!EatIfPresent(lltok::lparen))
1583 return Error(ParenLoc, "expected '('");
1584 LocTy DerefLoc = Lex.getLoc();
1585 if (ParseUInt64(Bytes)) return true;
1586 ParenLoc = Lex.getLoc();
1587 if (!EatIfPresent(lltok::rparen))
1588 return Error(ParenLoc, "expected ')'");
1590 return Error(DerefLoc, "dereferenceable bytes must be non-zero");
1594 /// ParseOptionalCommaAlign
1598 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1600 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1601 bool &AteExtraComma) {
1602 AteExtraComma = false;
1603 while (EatIfPresent(lltok::comma)) {
1604 // Metadata at the end is an early exit.
1605 if (Lex.getKind() == lltok::MetadataVar) {
1606 AteExtraComma = true;
1610 if (Lex.getKind() != lltok::kw_align)
1611 return Error(Lex.getLoc(), "expected metadata or 'align'");
1613 if (ParseOptionalAlignment(Alignment)) return true;
1619 /// ParseScopeAndOrdering
1620 /// if isAtomic: ::= 'singlethread'? AtomicOrdering
1623 /// This sets Scope and Ordering to the parsed values.
1624 bool LLParser::ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope,
1625 AtomicOrdering &Ordering) {
1629 Scope = CrossThread;
1630 if (EatIfPresent(lltok::kw_singlethread))
1631 Scope = SingleThread;
1633 return ParseOrdering(Ordering);
1637 /// ::= AtomicOrdering
1639 /// This sets Ordering to the parsed value.
1640 bool LLParser::ParseOrdering(AtomicOrdering &Ordering) {
1641 switch (Lex.getKind()) {
1642 default: return TokError("Expected ordering on atomic instruction");
1643 case lltok::kw_unordered: Ordering = Unordered; break;
1644 case lltok::kw_monotonic: Ordering = Monotonic; break;
1645 case lltok::kw_acquire: Ordering = Acquire; break;
1646 case lltok::kw_release: Ordering = Release; break;
1647 case lltok::kw_acq_rel: Ordering = AcquireRelease; break;
1648 case lltok::kw_seq_cst: Ordering = SequentiallyConsistent; break;
1654 /// ParseOptionalStackAlignment
1656 /// ::= 'alignstack' '(' 4 ')'
1657 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1659 if (!EatIfPresent(lltok::kw_alignstack))
1661 LocTy ParenLoc = Lex.getLoc();
1662 if (!EatIfPresent(lltok::lparen))
1663 return Error(ParenLoc, "expected '('");
1664 LocTy AlignLoc = Lex.getLoc();
1665 if (ParseUInt32(Alignment)) return true;
1666 ParenLoc = Lex.getLoc();
1667 if (!EatIfPresent(lltok::rparen))
1668 return Error(ParenLoc, "expected ')'");
1669 if (!isPowerOf2_32(Alignment))
1670 return Error(AlignLoc, "stack alignment is not a power of two");
1674 /// ParseIndexList - This parses the index list for an insert/extractvalue
1675 /// instruction. This sets AteExtraComma in the case where we eat an extra
1676 /// comma at the end of the line and find that it is followed by metadata.
1677 /// Clients that don't allow metadata can call the version of this function that
1678 /// only takes one argument.
1681 /// ::= (',' uint32)+
1683 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1684 bool &AteExtraComma) {
1685 AteExtraComma = false;
1687 if (Lex.getKind() != lltok::comma)
1688 return TokError("expected ',' as start of index list");
1690 while (EatIfPresent(lltok::comma)) {
1691 if (Lex.getKind() == lltok::MetadataVar) {
1692 AteExtraComma = true;
1696 if (ParseUInt32(Idx)) return true;
1697 Indices.push_back(Idx);
1703 //===----------------------------------------------------------------------===//
1705 //===----------------------------------------------------------------------===//
1707 /// ParseType - Parse a type.
1708 bool LLParser::ParseType(Type *&Result, bool AllowVoid) {
1709 SMLoc TypeLoc = Lex.getLoc();
1710 switch (Lex.getKind()) {
1712 return TokError("expected type");
1714 // Type ::= 'float' | 'void' (etc)
1715 Result = Lex.getTyVal();
1719 // Type ::= StructType
1720 if (ParseAnonStructType(Result, false))
1723 case lltok::lsquare:
1724 // Type ::= '[' ... ']'
1725 Lex.Lex(); // eat the lsquare.
1726 if (ParseArrayVectorType(Result, false))
1729 case lltok::less: // Either vector or packed struct.
1730 // Type ::= '<' ... '>'
1732 if (Lex.getKind() == lltok::lbrace) {
1733 if (ParseAnonStructType(Result, true) ||
1734 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1736 } else if (ParseArrayVectorType(Result, true))
1739 case lltok::LocalVar: {
1741 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
1743 // If the type hasn't been defined yet, create a forward definition and
1744 // remember where that forward def'n was seen (in case it never is defined).
1746 Entry.first = StructType::create(Context, Lex.getStrVal());
1747 Entry.second = Lex.getLoc();
1749 Result = Entry.first;
1754 case lltok::LocalVarID: {
1756 if (Lex.getUIntVal() >= NumberedTypes.size())
1757 NumberedTypes.resize(Lex.getUIntVal()+1);
1758 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
1760 // If the type hasn't been defined yet, create a forward definition and
1761 // remember where that forward def'n was seen (in case it never is defined).
1763 Entry.first = StructType::create(Context);
1764 Entry.second = Lex.getLoc();
1766 Result = Entry.first;
1772 // Parse the type suffixes.
1774 switch (Lex.getKind()) {
1777 if (!AllowVoid && Result->isVoidTy())
1778 return Error(TypeLoc, "void type only allowed for function results");
1781 // Type ::= Type '*'
1783 if (Result->isLabelTy())
1784 return TokError("basic block pointers are invalid");
1785 if (Result->isVoidTy())
1786 return TokError("pointers to void are invalid - use i8* instead");
1787 if (!PointerType::isValidElementType(Result))
1788 return TokError("pointer to this type is invalid");
1789 Result = PointerType::getUnqual(Result);
1793 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
1794 case lltok::kw_addrspace: {
1795 if (Result->isLabelTy())
1796 return TokError("basic block pointers are invalid");
1797 if (Result->isVoidTy())
1798 return TokError("pointers to void are invalid; use i8* instead");
1799 if (!PointerType::isValidElementType(Result))
1800 return TokError("pointer to this type is invalid");
1802 if (ParseOptionalAddrSpace(AddrSpace) ||
1803 ParseToken(lltok::star, "expected '*' in address space"))
1806 Result = PointerType::get(Result, AddrSpace);
1810 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1812 if (ParseFunctionType(Result))
1819 /// ParseParameterList
1821 /// ::= '(' Arg (',' Arg)* ')'
1823 /// ::= Type OptionalAttributes Value OptionalAttributes
1824 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1825 PerFunctionState &PFS, bool IsMustTailCall,
1826 bool InVarArgsFunc) {
1827 if (ParseToken(lltok::lparen, "expected '(' in call"))
1830 unsigned AttrIndex = 1;
1831 while (Lex.getKind() != lltok::rparen) {
1832 // If this isn't the first argument, we need a comma.
1833 if (!ArgList.empty() &&
1834 ParseToken(lltok::comma, "expected ',' in argument list"))
1837 // Parse an ellipsis if this is a musttail call in a variadic function.
1838 if (Lex.getKind() == lltok::dotdotdot) {
1839 const char *Msg = "unexpected ellipsis in argument list for ";
1840 if (!IsMustTailCall)
1841 return TokError(Twine(Msg) + "non-musttail call");
1843 return TokError(Twine(Msg) + "musttail call in non-varargs function");
1844 Lex.Lex(); // Lex the '...', it is purely for readability.
1845 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1848 // Parse the argument.
1850 Type *ArgTy = nullptr;
1851 AttrBuilder ArgAttrs;
1853 if (ParseType(ArgTy, ArgLoc))
1856 // Otherwise, handle normal operands.
1857 if (ParseOptionalParamAttrs(ArgAttrs) || ParseValue(ArgTy, V, PFS))
1859 ArgList.push_back(ParamInfo(ArgLoc, V, AttributeSet::get(V->getContext(),
1864 if (IsMustTailCall && InVarArgsFunc)
1865 return TokError("expected '...' at end of argument list for musttail call "
1866 "in varargs function");
1868 Lex.Lex(); // Lex the ')'.
1874 /// ParseArgumentList - Parse the argument list for a function type or function
1876 /// ::= '(' ArgTypeListI ')'
1880 /// ::= ArgTypeList ',' '...'
1881 /// ::= ArgType (',' ArgType)*
1883 bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
1886 assert(Lex.getKind() == lltok::lparen);
1887 Lex.Lex(); // eat the (.
1889 if (Lex.getKind() == lltok::rparen) {
1891 } else if (Lex.getKind() == lltok::dotdotdot) {
1895 LocTy TypeLoc = Lex.getLoc();
1896 Type *ArgTy = nullptr;
1900 if (ParseType(ArgTy) ||
1901 ParseOptionalParamAttrs(Attrs)) return true;
1903 if (ArgTy->isVoidTy())
1904 return Error(TypeLoc, "argument can not have void type");
1906 if (Lex.getKind() == lltok::LocalVar) {
1907 Name = Lex.getStrVal();
1911 if (!FunctionType::isValidArgumentType(ArgTy))
1912 return Error(TypeLoc, "invalid type for function argument");
1914 unsigned AttrIndex = 1;
1915 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1916 AttributeSet::get(ArgTy->getContext(),
1917 AttrIndex++, Attrs), Name));
1919 while (EatIfPresent(lltok::comma)) {
1920 // Handle ... at end of arg list.
1921 if (EatIfPresent(lltok::dotdotdot)) {
1926 // Otherwise must be an argument type.
1927 TypeLoc = Lex.getLoc();
1928 if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
1930 if (ArgTy->isVoidTy())
1931 return Error(TypeLoc, "argument can not have void type");
1933 if (Lex.getKind() == lltok::LocalVar) {
1934 Name = Lex.getStrVal();
1940 if (!ArgTy->isFirstClassType())
1941 return Error(TypeLoc, "invalid type for function argument");
1943 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1944 AttributeSet::get(ArgTy->getContext(),
1945 AttrIndex++, Attrs),
1950 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1953 /// ParseFunctionType
1954 /// ::= Type ArgumentList OptionalAttrs
1955 bool LLParser::ParseFunctionType(Type *&Result) {
1956 assert(Lex.getKind() == lltok::lparen);
1958 if (!FunctionType::isValidReturnType(Result))
1959 return TokError("invalid function return type");
1961 SmallVector<ArgInfo, 8> ArgList;
1963 if (ParseArgumentList(ArgList, isVarArg))
1966 // Reject names on the arguments lists.
1967 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1968 if (!ArgList[i].Name.empty())
1969 return Error(ArgList[i].Loc, "argument name invalid in function type");
1970 if (ArgList[i].Attrs.hasAttributes(i + 1))
1971 return Error(ArgList[i].Loc,
1972 "argument attributes invalid in function type");
1975 SmallVector<Type*, 16> ArgListTy;
1976 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1977 ArgListTy.push_back(ArgList[i].Ty);
1979 Result = FunctionType::get(Result, ArgListTy, isVarArg);
1983 /// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
1985 bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
1986 SmallVector<Type*, 8> Elts;
1987 if (ParseStructBody(Elts)) return true;
1989 Result = StructType::get(Context, Elts, Packed);
1993 /// ParseStructDefinition - Parse a struct in a 'type' definition.
1994 bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
1995 std::pair<Type*, LocTy> &Entry,
1997 // If the type was already defined, diagnose the redefinition.
1998 if (Entry.first && !Entry.second.isValid())
1999 return Error(TypeLoc, "redefinition of type");
2001 // If we have opaque, just return without filling in the definition for the
2002 // struct. This counts as a definition as far as the .ll file goes.
2003 if (EatIfPresent(lltok::kw_opaque)) {
2004 // This type is being defined, so clear the location to indicate this.
2005 Entry.second = SMLoc();
2007 // If this type number has never been uttered, create it.
2009 Entry.first = StructType::create(Context, Name);
2010 ResultTy = Entry.first;
2014 // If the type starts with '<', then it is either a packed struct or a vector.
2015 bool isPacked = EatIfPresent(lltok::less);
2017 // If we don't have a struct, then we have a random type alias, which we
2018 // accept for compatibility with old files. These types are not allowed to be
2019 // forward referenced and not allowed to be recursive.
2020 if (Lex.getKind() != lltok::lbrace) {
2022 return Error(TypeLoc, "forward references to non-struct type");
2026 return ParseArrayVectorType(ResultTy, true);
2027 return ParseType(ResultTy);
2030 // This type is being defined, so clear the location to indicate this.
2031 Entry.second = SMLoc();
2033 // If this type number has never been uttered, create it.
2035 Entry.first = StructType::create(Context, Name);
2037 StructType *STy = cast<StructType>(Entry.first);
2039 SmallVector<Type*, 8> Body;
2040 if (ParseStructBody(Body) ||
2041 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
2044 STy->setBody(Body, isPacked);
2050 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
2053 /// ::= '{' Type (',' Type)* '}'
2054 /// ::= '<' '{' '}' '>'
2055 /// ::= '<' '{' Type (',' Type)* '}' '>'
2056 bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
2057 assert(Lex.getKind() == lltok::lbrace);
2058 Lex.Lex(); // Consume the '{'
2060 // Handle the empty struct.
2061 if (EatIfPresent(lltok::rbrace))
2064 LocTy EltTyLoc = Lex.getLoc();
2066 if (ParseType(Ty)) return true;
2069 if (!StructType::isValidElementType(Ty))
2070 return Error(EltTyLoc, "invalid element type for struct");
2072 while (EatIfPresent(lltok::comma)) {
2073 EltTyLoc = Lex.getLoc();
2074 if (ParseType(Ty)) return true;
2076 if (!StructType::isValidElementType(Ty))
2077 return Error(EltTyLoc, "invalid element type for struct");
2082 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
2085 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
2086 /// token has already been consumed.
2088 /// ::= '[' APSINTVAL 'x' Types ']'
2089 /// ::= '<' APSINTVAL 'x' Types '>'
2090 bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
2091 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
2092 Lex.getAPSIntVal().getBitWidth() > 64)
2093 return TokError("expected number in address space");
2095 LocTy SizeLoc = Lex.getLoc();
2096 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
2099 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
2102 LocTy TypeLoc = Lex.getLoc();
2103 Type *EltTy = nullptr;
2104 if (ParseType(EltTy)) return true;
2106 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
2107 "expected end of sequential type"))
2112 return Error(SizeLoc, "zero element vector is illegal");
2113 if ((unsigned)Size != Size)
2114 return Error(SizeLoc, "size too large for vector");
2115 if (!VectorType::isValidElementType(EltTy))
2116 return Error(TypeLoc, "invalid vector element type");
2117 Result = VectorType::get(EltTy, unsigned(Size));
2119 if (!ArrayType::isValidElementType(EltTy))
2120 return Error(TypeLoc, "invalid array element type");
2121 Result = ArrayType::get(EltTy, Size);
2126 //===----------------------------------------------------------------------===//
2127 // Function Semantic Analysis.
2128 //===----------------------------------------------------------------------===//
2130 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
2132 : P(p), F(f), FunctionNumber(functionNumber) {
2134 // Insert unnamed arguments into the NumberedVals list.
2135 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
2138 NumberedVals.push_back(AI);
2141 LLParser::PerFunctionState::~PerFunctionState() {
2142 // If there were any forward referenced non-basicblock values, delete them.
2143 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
2144 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
2145 if (!isa<BasicBlock>(I->second.first)) {
2146 I->second.first->replaceAllUsesWith(
2147 UndefValue::get(I->second.first->getType()));
2148 delete I->second.first;
2149 I->second.first = nullptr;
2152 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2153 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
2154 if (!isa<BasicBlock>(I->second.first)) {
2155 I->second.first->replaceAllUsesWith(
2156 UndefValue::get(I->second.first->getType()));
2157 delete I->second.first;
2158 I->second.first = nullptr;
2162 bool LLParser::PerFunctionState::FinishFunction() {
2163 if (!ForwardRefVals.empty())
2164 return P.Error(ForwardRefVals.begin()->second.second,
2165 "use of undefined value '%" + ForwardRefVals.begin()->first +
2167 if (!ForwardRefValIDs.empty())
2168 return P.Error(ForwardRefValIDs.begin()->second.second,
2169 "use of undefined value '%" +
2170 Twine(ForwardRefValIDs.begin()->first) + "'");
2175 /// GetVal - Get a value with the specified name or ID, creating a
2176 /// forward reference record if needed. This can return null if the value
2177 /// exists but does not have the right type.
2178 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
2179 Type *Ty, LocTy Loc) {
2180 // Look this name up in the normal function symbol table.
2181 Value *Val = F.getValueSymbolTable().lookup(Name);
2183 // If this is a forward reference for the value, see if we already created a
2184 // forward ref record.
2186 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2187 I = ForwardRefVals.find(Name);
2188 if (I != ForwardRefVals.end())
2189 Val = I->second.first;
2192 // If we have the value in the symbol table or fwd-ref table, return it.
2194 if (Val->getType() == Ty) return Val;
2195 if (Ty->isLabelTy())
2196 P.Error(Loc, "'%" + Name + "' is not a basic block");
2198 P.Error(Loc, "'%" + Name + "' defined with type '" +
2199 getTypeString(Val->getType()) + "'");
2203 // Don't make placeholders with invalid type.
2204 if (!Ty->isFirstClassType()) {
2205 P.Error(Loc, "invalid use of a non-first-class type");
2209 // Otherwise, create a new forward reference for this value and remember it.
2211 if (Ty->isLabelTy())
2212 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2214 FwdVal = new Argument(Ty, Name);
2216 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2220 Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty,
2222 // Look this name up in the normal function symbol table.
2223 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
2225 // If this is a forward reference for the value, see if we already created a
2226 // forward ref record.
2228 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2229 I = ForwardRefValIDs.find(ID);
2230 if (I != ForwardRefValIDs.end())
2231 Val = I->second.first;
2234 // If we have the value in the symbol table or fwd-ref table, return it.
2236 if (Val->getType() == Ty) return Val;
2237 if (Ty->isLabelTy())
2238 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
2240 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
2241 getTypeString(Val->getType()) + "'");
2245 if (!Ty->isFirstClassType()) {
2246 P.Error(Loc, "invalid use of a non-first-class type");
2250 // Otherwise, create a new forward reference for this value and remember it.
2252 if (Ty->isLabelTy())
2253 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2255 FwdVal = new Argument(Ty);
2257 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2261 /// SetInstName - After an instruction is parsed and inserted into its
2262 /// basic block, this installs its name.
2263 bool LLParser::PerFunctionState::SetInstName(int NameID,
2264 const std::string &NameStr,
2265 LocTy NameLoc, Instruction *Inst) {
2266 // If this instruction has void type, it cannot have a name or ID specified.
2267 if (Inst->getType()->isVoidTy()) {
2268 if (NameID != -1 || !NameStr.empty())
2269 return P.Error(NameLoc, "instructions returning void cannot have a name");
2273 // If this was a numbered instruction, verify that the instruction is the
2274 // expected value and resolve any forward references.
2275 if (NameStr.empty()) {
2276 // If neither a name nor an ID was specified, just use the next ID.
2278 NameID = NumberedVals.size();
2280 if (unsigned(NameID) != NumberedVals.size())
2281 return P.Error(NameLoc, "instruction expected to be numbered '%" +
2282 Twine(NumberedVals.size()) + "'");
2284 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
2285 ForwardRefValIDs.find(NameID);
2286 if (FI != ForwardRefValIDs.end()) {
2287 if (FI->second.first->getType() != Inst->getType())
2288 return P.Error(NameLoc, "instruction forward referenced with type '" +
2289 getTypeString(FI->second.first->getType()) + "'");
2290 FI->second.first->replaceAllUsesWith(Inst);
2291 delete FI->second.first;
2292 ForwardRefValIDs.erase(FI);
2295 NumberedVals.push_back(Inst);
2299 // Otherwise, the instruction had a name. Resolve forward refs and set it.
2300 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2301 FI = ForwardRefVals.find(NameStr);
2302 if (FI != ForwardRefVals.end()) {
2303 if (FI->second.first->getType() != Inst->getType())
2304 return P.Error(NameLoc, "instruction forward referenced with type '" +
2305 getTypeString(FI->second.first->getType()) + "'");
2306 FI->second.first->replaceAllUsesWith(Inst);
2307 delete FI->second.first;
2308 ForwardRefVals.erase(FI);
2311 // Set the name on the instruction.
2312 Inst->setName(NameStr);
2314 if (Inst->getName() != NameStr)
2315 return P.Error(NameLoc, "multiple definition of local value named '" +
2320 /// GetBB - Get a basic block with the specified name or ID, creating a
2321 /// forward reference record if needed.
2322 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2324 return cast_or_null<BasicBlock>(GetVal(Name,
2325 Type::getLabelTy(F.getContext()), Loc));
2328 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2329 return cast_or_null<BasicBlock>(GetVal(ID,
2330 Type::getLabelTy(F.getContext()), Loc));
2333 /// DefineBB - Define the specified basic block, which is either named or
2334 /// unnamed. If there is an error, this returns null otherwise it returns
2335 /// the block being defined.
2336 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2340 BB = GetBB(NumberedVals.size(), Loc);
2342 BB = GetBB(Name, Loc);
2343 if (!BB) return nullptr; // Already diagnosed error.
2345 // Move the block to the end of the function. Forward ref'd blocks are
2346 // inserted wherever they happen to be referenced.
2347 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2349 // Remove the block from forward ref sets.
2351 ForwardRefValIDs.erase(NumberedVals.size());
2352 NumberedVals.push_back(BB);
2354 // BB forward references are already in the function symbol table.
2355 ForwardRefVals.erase(Name);
2361 //===----------------------------------------------------------------------===//
2363 //===----------------------------------------------------------------------===//
2365 /// ParseValID - Parse an abstract value that doesn't necessarily have a
2366 /// type implied. For example, if we parse "4" we don't know what integer type
2367 /// it has. The value will later be combined with its type and checked for
2368 /// sanity. PFS is used to convert function-local operands of metadata (since
2369 /// metadata operands are not just parsed here but also converted to values).
2370 /// PFS can be null when we are not parsing metadata values inside a function.
2371 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2372 ID.Loc = Lex.getLoc();
2373 switch (Lex.getKind()) {
2374 default: return TokError("expected value token");
2375 case lltok::GlobalID: // @42
2376 ID.UIntVal = Lex.getUIntVal();
2377 ID.Kind = ValID::t_GlobalID;
2379 case lltok::GlobalVar: // @foo
2380 ID.StrVal = Lex.getStrVal();
2381 ID.Kind = ValID::t_GlobalName;
2383 case lltok::LocalVarID: // %42
2384 ID.UIntVal = Lex.getUIntVal();
2385 ID.Kind = ValID::t_LocalID;
2387 case lltok::LocalVar: // %foo
2388 ID.StrVal = Lex.getStrVal();
2389 ID.Kind = ValID::t_LocalName;
2391 case lltok::exclaim: // !42, !{...}, or !"foo"
2392 return ParseMetadataAsValue(ID, PFS);
2394 ID.APSIntVal = Lex.getAPSIntVal();
2395 ID.Kind = ValID::t_APSInt;
2397 case lltok::APFloat:
2398 ID.APFloatVal = Lex.getAPFloatVal();
2399 ID.Kind = ValID::t_APFloat;
2401 case lltok::kw_true:
2402 ID.ConstantVal = ConstantInt::getTrue(Context);
2403 ID.Kind = ValID::t_Constant;
2405 case lltok::kw_false:
2406 ID.ConstantVal = ConstantInt::getFalse(Context);
2407 ID.Kind = ValID::t_Constant;
2409 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2410 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2411 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2413 case lltok::lbrace: {
2414 // ValID ::= '{' ConstVector '}'
2416 SmallVector<Constant*, 16> Elts;
2417 if (ParseGlobalValueVector(Elts) ||
2418 ParseToken(lltok::rbrace, "expected end of struct constant"))
2421 ID.ConstantStructElts = new Constant*[Elts.size()];
2422 ID.UIntVal = Elts.size();
2423 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2424 ID.Kind = ValID::t_ConstantStruct;
2428 // ValID ::= '<' ConstVector '>' --> Vector.
2429 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2431 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2433 SmallVector<Constant*, 16> Elts;
2434 LocTy FirstEltLoc = Lex.getLoc();
2435 if (ParseGlobalValueVector(Elts) ||
2437 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2438 ParseToken(lltok::greater, "expected end of constant"))
2441 if (isPackedStruct) {
2442 ID.ConstantStructElts = new Constant*[Elts.size()];
2443 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2444 ID.UIntVal = Elts.size();
2445 ID.Kind = ValID::t_PackedConstantStruct;
2450 return Error(ID.Loc, "constant vector must not be empty");
2452 if (!Elts[0]->getType()->isIntegerTy() &&
2453 !Elts[0]->getType()->isFloatingPointTy() &&
2454 !Elts[0]->getType()->isPointerTy())
2455 return Error(FirstEltLoc,
2456 "vector elements must have integer, pointer or floating point type");
2458 // Verify that all the vector elements have the same type.
2459 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2460 if (Elts[i]->getType() != Elts[0]->getType())
2461 return Error(FirstEltLoc,
2462 "vector element #" + Twine(i) +
2463 " is not of type '" + getTypeString(Elts[0]->getType()));
2465 ID.ConstantVal = ConstantVector::get(Elts);
2466 ID.Kind = ValID::t_Constant;
2469 case lltok::lsquare: { // Array Constant
2471 SmallVector<Constant*, 16> Elts;
2472 LocTy FirstEltLoc = Lex.getLoc();
2473 if (ParseGlobalValueVector(Elts) ||
2474 ParseToken(lltok::rsquare, "expected end of array constant"))
2477 // Handle empty element.
2479 // Use undef instead of an array because it's inconvenient to determine
2480 // the element type at this point, there being no elements to examine.
2481 ID.Kind = ValID::t_EmptyArray;
2485 if (!Elts[0]->getType()->isFirstClassType())
2486 return Error(FirstEltLoc, "invalid array element type: " +
2487 getTypeString(Elts[0]->getType()));
2489 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2491 // Verify all elements are correct type!
2492 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2493 if (Elts[i]->getType() != Elts[0]->getType())
2494 return Error(FirstEltLoc,
2495 "array element #" + Twine(i) +
2496 " is not of type '" + getTypeString(Elts[0]->getType()));
2499 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2500 ID.Kind = ValID::t_Constant;
2503 case lltok::kw_c: // c "foo"
2505 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2507 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2508 ID.Kind = ValID::t_Constant;
2511 case lltok::kw_asm: {
2512 // ValID ::= 'asm' SideEffect? AlignStack? IntelDialect? STRINGCONSTANT ','
2514 bool HasSideEffect, AlignStack, AsmDialect;
2516 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2517 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2518 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2519 ParseStringConstant(ID.StrVal) ||
2520 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2521 ParseToken(lltok::StringConstant, "expected constraint string"))
2523 ID.StrVal2 = Lex.getStrVal();
2524 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2525 (unsigned(AsmDialect)<<2);
2526 ID.Kind = ValID::t_InlineAsm;
2530 case lltok::kw_blockaddress: {
2531 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2536 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2538 ParseToken(lltok::comma, "expected comma in block address expression")||
2539 ParseValID(Label) ||
2540 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2543 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2544 return Error(Fn.Loc, "expected function name in blockaddress");
2545 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2546 return Error(Label.Loc, "expected basic block name in blockaddress");
2548 // Try to find the function (but skip it if it's forward-referenced).
2549 GlobalValue *GV = nullptr;
2550 if (Fn.Kind == ValID::t_GlobalID) {
2551 if (Fn.UIntVal < NumberedVals.size())
2552 GV = NumberedVals[Fn.UIntVal];
2553 } else if (!ForwardRefVals.count(Fn.StrVal)) {
2554 GV = M->getNamedValue(Fn.StrVal);
2556 Function *F = nullptr;
2558 // Confirm that it's actually a function with a definition.
2559 if (!isa<Function>(GV))
2560 return Error(Fn.Loc, "expected function name in blockaddress");
2561 F = cast<Function>(GV);
2562 if (F->isDeclaration())
2563 return Error(Fn.Loc, "cannot take blockaddress inside a declaration");
2567 // Make a global variable as a placeholder for this reference.
2568 GlobalValue *&FwdRef = ForwardRefBlockAddresses[Fn][Label];
2570 FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context), false,
2571 GlobalValue::InternalLinkage, nullptr, "");
2572 ID.ConstantVal = FwdRef;
2573 ID.Kind = ValID::t_Constant;
2577 // We found the function; now find the basic block. Don't use PFS, since we
2578 // might be inside a constant expression.
2580 if (BlockAddressPFS && F == &BlockAddressPFS->getFunction()) {
2581 if (Label.Kind == ValID::t_LocalID)
2582 BB = BlockAddressPFS->GetBB(Label.UIntVal, Label.Loc);
2584 BB = BlockAddressPFS->GetBB(Label.StrVal, Label.Loc);
2586 return Error(Label.Loc, "referenced value is not a basic block");
2588 if (Label.Kind == ValID::t_LocalID)
2589 return Error(Label.Loc, "cannot take address of numeric label after "
2590 "the function is defined");
2591 BB = dyn_cast_or_null<BasicBlock>(
2592 F->getValueSymbolTable().lookup(Label.StrVal));
2594 return Error(Label.Loc, "referenced value is not a basic block");
2597 ID.ConstantVal = BlockAddress::get(F, BB);
2598 ID.Kind = ValID::t_Constant;
2602 case lltok::kw_trunc:
2603 case lltok::kw_zext:
2604 case lltok::kw_sext:
2605 case lltok::kw_fptrunc:
2606 case lltok::kw_fpext:
2607 case lltok::kw_bitcast:
2608 case lltok::kw_addrspacecast:
2609 case lltok::kw_uitofp:
2610 case lltok::kw_sitofp:
2611 case lltok::kw_fptoui:
2612 case lltok::kw_fptosi:
2613 case lltok::kw_inttoptr:
2614 case lltok::kw_ptrtoint: {
2615 unsigned Opc = Lex.getUIntVal();
2616 Type *DestTy = nullptr;
2619 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2620 ParseGlobalTypeAndValue(SrcVal) ||
2621 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2622 ParseType(DestTy) ||
2623 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2625 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2626 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2627 getTypeString(SrcVal->getType()) + "' to '" +
2628 getTypeString(DestTy) + "'");
2629 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2631 ID.Kind = ValID::t_Constant;
2634 case lltok::kw_extractvalue: {
2637 SmallVector<unsigned, 4> Indices;
2638 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2639 ParseGlobalTypeAndValue(Val) ||
2640 ParseIndexList(Indices) ||
2641 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2644 if (!Val->getType()->isAggregateType())
2645 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2646 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
2647 return Error(ID.Loc, "invalid indices for extractvalue");
2648 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
2649 ID.Kind = ValID::t_Constant;
2652 case lltok::kw_insertvalue: {
2654 Constant *Val0, *Val1;
2655 SmallVector<unsigned, 4> Indices;
2656 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2657 ParseGlobalTypeAndValue(Val0) ||
2658 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2659 ParseGlobalTypeAndValue(Val1) ||
2660 ParseIndexList(Indices) ||
2661 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2663 if (!Val0->getType()->isAggregateType())
2664 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2665 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
2666 return Error(ID.Loc, "invalid indices for insertvalue");
2667 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
2668 ID.Kind = ValID::t_Constant;
2671 case lltok::kw_icmp:
2672 case lltok::kw_fcmp: {
2673 unsigned PredVal, Opc = Lex.getUIntVal();
2674 Constant *Val0, *Val1;
2676 if (ParseCmpPredicate(PredVal, Opc) ||
2677 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2678 ParseGlobalTypeAndValue(Val0) ||
2679 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2680 ParseGlobalTypeAndValue(Val1) ||
2681 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2684 if (Val0->getType() != Val1->getType())
2685 return Error(ID.Loc, "compare operands must have the same type");
2687 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2689 if (Opc == Instruction::FCmp) {
2690 if (!Val0->getType()->isFPOrFPVectorTy())
2691 return Error(ID.Loc, "fcmp requires floating point operands");
2692 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2694 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2695 if (!Val0->getType()->isIntOrIntVectorTy() &&
2696 !Val0->getType()->getScalarType()->isPointerTy())
2697 return Error(ID.Loc, "icmp requires pointer or integer operands");
2698 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2700 ID.Kind = ValID::t_Constant;
2704 // Binary Operators.
2706 case lltok::kw_fadd:
2708 case lltok::kw_fsub:
2710 case lltok::kw_fmul:
2711 case lltok::kw_udiv:
2712 case lltok::kw_sdiv:
2713 case lltok::kw_fdiv:
2714 case lltok::kw_urem:
2715 case lltok::kw_srem:
2716 case lltok::kw_frem:
2718 case lltok::kw_lshr:
2719 case lltok::kw_ashr: {
2723 unsigned Opc = Lex.getUIntVal();
2724 Constant *Val0, *Val1;
2726 LocTy ModifierLoc = Lex.getLoc();
2727 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
2728 Opc == Instruction::Mul || Opc == Instruction::Shl) {
2729 if (EatIfPresent(lltok::kw_nuw))
2731 if (EatIfPresent(lltok::kw_nsw)) {
2733 if (EatIfPresent(lltok::kw_nuw))
2736 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
2737 Opc == Instruction::LShr || Opc == Instruction::AShr) {
2738 if (EatIfPresent(lltok::kw_exact))
2741 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2742 ParseGlobalTypeAndValue(Val0) ||
2743 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2744 ParseGlobalTypeAndValue(Val1) ||
2745 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2747 if (Val0->getType() != Val1->getType())
2748 return Error(ID.Loc, "operands of constexpr must have same type");
2749 if (!Val0->getType()->isIntOrIntVectorTy()) {
2751 return Error(ModifierLoc, "nuw only applies to integer operations");
2753 return Error(ModifierLoc, "nsw only applies to integer operations");
2755 // Check that the type is valid for the operator.
2757 case Instruction::Add:
2758 case Instruction::Sub:
2759 case Instruction::Mul:
2760 case Instruction::UDiv:
2761 case Instruction::SDiv:
2762 case Instruction::URem:
2763 case Instruction::SRem:
2764 case Instruction::Shl:
2765 case Instruction::AShr:
2766 case Instruction::LShr:
2767 if (!Val0->getType()->isIntOrIntVectorTy())
2768 return Error(ID.Loc, "constexpr requires integer operands");
2770 case Instruction::FAdd:
2771 case Instruction::FSub:
2772 case Instruction::FMul:
2773 case Instruction::FDiv:
2774 case Instruction::FRem:
2775 if (!Val0->getType()->isFPOrFPVectorTy())
2776 return Error(ID.Loc, "constexpr requires fp operands");
2778 default: llvm_unreachable("Unknown binary operator!");
2781 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2782 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2783 if (Exact) Flags |= PossiblyExactOperator::IsExact;
2784 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2786 ID.Kind = ValID::t_Constant;
2790 // Logical Operations
2793 case lltok::kw_xor: {
2794 unsigned Opc = Lex.getUIntVal();
2795 Constant *Val0, *Val1;
2797 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2798 ParseGlobalTypeAndValue(Val0) ||
2799 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2800 ParseGlobalTypeAndValue(Val1) ||
2801 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2803 if (Val0->getType() != Val1->getType())
2804 return Error(ID.Loc, "operands of constexpr must have same type");
2805 if (!Val0->getType()->isIntOrIntVectorTy())
2806 return Error(ID.Loc,
2807 "constexpr requires integer or integer vector operands");
2808 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2809 ID.Kind = ValID::t_Constant;
2813 case lltok::kw_getelementptr:
2814 case lltok::kw_shufflevector:
2815 case lltok::kw_insertelement:
2816 case lltok::kw_extractelement:
2817 case lltok::kw_select: {
2818 unsigned Opc = Lex.getUIntVal();
2819 SmallVector<Constant*, 16> Elts;
2820 bool InBounds = false;
2822 if (Opc == Instruction::GetElementPtr)
2823 InBounds = EatIfPresent(lltok::kw_inbounds);
2824 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2825 ParseGlobalValueVector(Elts) ||
2826 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2829 if (Opc == Instruction::GetElementPtr) {
2830 if (Elts.size() == 0 ||
2831 !Elts[0]->getType()->getScalarType()->isPointerTy())
2832 return Error(ID.Loc, "getelementptr requires pointer operand");
2834 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
2835 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(), Indices))
2836 return Error(ID.Loc, "invalid indices for getelementptr");
2837 ID.ConstantVal = ConstantExpr::getGetElementPtr(Elts[0], Indices,
2839 } else if (Opc == Instruction::Select) {
2840 if (Elts.size() != 3)
2841 return Error(ID.Loc, "expected three operands to select");
2842 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2844 return Error(ID.Loc, Reason);
2845 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2846 } else if (Opc == Instruction::ShuffleVector) {
2847 if (Elts.size() != 3)
2848 return Error(ID.Loc, "expected three operands to shufflevector");
2849 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2850 return Error(ID.Loc, "invalid operands to shufflevector");
2852 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2853 } else if (Opc == Instruction::ExtractElement) {
2854 if (Elts.size() != 2)
2855 return Error(ID.Loc, "expected two operands to extractelement");
2856 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2857 return Error(ID.Loc, "invalid extractelement operands");
2858 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2860 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2861 if (Elts.size() != 3)
2862 return Error(ID.Loc, "expected three operands to insertelement");
2863 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2864 return Error(ID.Loc, "invalid insertelement operands");
2866 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2869 ID.Kind = ValID::t_Constant;
2878 /// ParseGlobalValue - Parse a global value with the specified type.
2879 bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
2883 bool Parsed = ParseValID(ID) ||
2884 ConvertValIDToValue(Ty, ID, V, nullptr);
2885 if (V && !(C = dyn_cast<Constant>(V)))
2886 return Error(ID.Loc, "global values must be constants");
2890 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2892 return ParseType(Ty) ||
2893 ParseGlobalValue(Ty, V);
2896 bool LLParser::parseOptionalComdat(Comdat *&C) {
2898 if (!EatIfPresent(lltok::kw_comdat))
2900 if (Lex.getKind() != lltok::ComdatVar)
2901 return TokError("expected comdat variable");
2902 LocTy Loc = Lex.getLoc();
2903 StringRef Name = Lex.getStrVal();
2904 C = getComdat(Name, Loc);
2909 /// ParseGlobalValueVector
2911 /// ::= TypeAndValue (',' TypeAndValue)*
2912 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant *> &Elts) {
2914 if (Lex.getKind() == lltok::rbrace ||
2915 Lex.getKind() == lltok::rsquare ||
2916 Lex.getKind() == lltok::greater ||
2917 Lex.getKind() == lltok::rparen)
2921 if (ParseGlobalTypeAndValue(C)) return true;
2924 while (EatIfPresent(lltok::comma)) {
2925 if (ParseGlobalTypeAndValue(C)) return true;
2932 bool LLParser::ParseMDNode(MDNode *&MD) {
2933 SmallVector<Metadata *, 16> Elts;
2934 if (ParseMDNodeVector(Elts, nullptr))
2937 MD = MDNode::get(Context, Elts);
2941 bool LLParser::ParseMDNodeOrLocal(Metadata *&MD, PerFunctionState *PFS) {
2942 SmallVector<Metadata *, 16> Elts;
2943 if (ParseMDNodeVector(Elts, PFS))
2946 // Check for function-local metadata masquerading as an MDNode.
2947 if (PFS && Elts.size() == 1 && Elts[0] && isa<LocalAsMetadata>(Elts[0])) {
2952 MD = MDNode::get(Context, Elts);
2956 bool LLParser::ParseMetadataAsValue(ValID &ID, PerFunctionState *PFS) {
2958 if (ParseMetadata(MD, PFS))
2961 ID.Kind = ValID::t_Metadata;
2962 ID.MetadataVal = MetadataAsValue::get(Context, MD);
2970 bool LLParser::ParseMetadata(Metadata *&MD, PerFunctionState *PFS) {
2971 if (ParseToken(lltok::exclaim, "expected '!' here"))
2976 if (Lex.getKind() == lltok::lbrace)
2977 return ParseMDNodeOrLocal(MD, PFS);
2979 // Standalone metadata reference
2981 if (Lex.getKind() == lltok::APSInt) {
2983 if (ParseMDNodeID(N))
2990 // ::= '!' STRINGCONSTANT
2992 if (ParseMDString(S))
2999 //===----------------------------------------------------------------------===//
3000 // Function Parsing.
3001 //===----------------------------------------------------------------------===//
3003 bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
3004 PerFunctionState *PFS) {
3005 if (Ty->isFunctionTy())
3006 return Error(ID.Loc, "functions are not values, refer to them as pointers");
3009 case ValID::t_LocalID:
3010 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
3011 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
3012 return V == nullptr;
3013 case ValID::t_LocalName:
3014 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
3015 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
3016 return V == nullptr;
3017 case ValID::t_InlineAsm: {
3018 PointerType *PTy = dyn_cast<PointerType>(Ty);
3020 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : nullptr;
3021 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
3022 return Error(ID.Loc, "invalid type for inline asm constraint string");
3023 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1,
3024 (ID.UIntVal>>1)&1, (InlineAsm::AsmDialect(ID.UIntVal>>2)));
3027 case ValID::t_Metadata:
3028 if (!Ty->isMetadataTy())
3029 return Error(ID.Loc, "metadata value must have metadata type");
3032 case ValID::t_GlobalName:
3033 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
3034 return V == nullptr;
3035 case ValID::t_GlobalID:
3036 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
3037 return V == nullptr;
3038 case ValID::t_APSInt:
3039 if (!Ty->isIntegerTy())
3040 return Error(ID.Loc, "integer constant must have integer type");
3041 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
3042 V = ConstantInt::get(Context, ID.APSIntVal);
3044 case ValID::t_APFloat:
3045 if (!Ty->isFloatingPointTy() ||
3046 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
3047 return Error(ID.Loc, "floating point constant invalid for type");
3049 // The lexer has no type info, so builds all half, float, and double FP
3050 // constants as double. Fix this here. Long double does not need this.
3051 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble) {
3054 ID.APFloatVal.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven,
3056 else if (Ty->isFloatTy())
3057 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
3060 V = ConstantFP::get(Context, ID.APFloatVal);
3062 if (V->getType() != Ty)
3063 return Error(ID.Loc, "floating point constant does not have type '" +
3064 getTypeString(Ty) + "'");
3068 if (!Ty->isPointerTy())
3069 return Error(ID.Loc, "null must be a pointer type");
3070 V = ConstantPointerNull::get(cast<PointerType>(Ty));
3072 case ValID::t_Undef:
3073 // FIXME: LabelTy should not be a first-class type.
3074 if (!Ty->isFirstClassType() || Ty->isLabelTy())
3075 return Error(ID.Loc, "invalid type for undef constant");
3076 V = UndefValue::get(Ty);
3078 case ValID::t_EmptyArray:
3079 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
3080 return Error(ID.Loc, "invalid empty array initializer");
3081 V = UndefValue::get(Ty);
3084 // FIXME: LabelTy should not be a first-class type.
3085 if (!Ty->isFirstClassType() || Ty->isLabelTy())
3086 return Error(ID.Loc, "invalid type for null constant");
3087 V = Constant::getNullValue(Ty);
3089 case ValID::t_Constant:
3090 if (ID.ConstantVal->getType() != Ty)
3091 return Error(ID.Loc, "constant expression type mismatch");
3095 case ValID::t_ConstantStruct:
3096 case ValID::t_PackedConstantStruct:
3097 if (StructType *ST = dyn_cast<StructType>(Ty)) {
3098 if (ST->getNumElements() != ID.UIntVal)
3099 return Error(ID.Loc,
3100 "initializer with struct type has wrong # elements");
3101 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
3102 return Error(ID.Loc, "packed'ness of initializer and type don't match");
3104 // Verify that the elements are compatible with the structtype.
3105 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
3106 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
3107 return Error(ID.Loc, "element " + Twine(i) +
3108 " of struct initializer doesn't match struct element type");
3110 V = ConstantStruct::get(ST, makeArrayRef(ID.ConstantStructElts,
3113 return Error(ID.Loc, "constant expression type mismatch");
3116 llvm_unreachable("Invalid ValID");
3119 bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS) {
3122 return ParseValID(ID, PFS) ||
3123 ConvertValIDToValue(Ty, ID, V, PFS);
3126 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
3128 return ParseType(Ty) ||
3129 ParseValue(Ty, V, PFS);
3132 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
3133 PerFunctionState &PFS) {
3136 if (ParseTypeAndValue(V, PFS)) return true;
3137 if (!isa<BasicBlock>(V))
3138 return Error(Loc, "expected a basic block");
3139 BB = cast<BasicBlock>(V);
3145 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
3146 /// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
3147 /// OptionalAlign OptGC OptionalPrefix OptionalPrologue
3148 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
3149 // Parse the linkage.
3150 LocTy LinkageLoc = Lex.getLoc();
3153 unsigned Visibility;
3154 unsigned DLLStorageClass;
3155 AttrBuilder RetAttrs;
3157 Type *RetType = nullptr;
3158 LocTy RetTypeLoc = Lex.getLoc();
3159 if (ParseOptionalLinkage(Linkage) ||
3160 ParseOptionalVisibility(Visibility) ||
3161 ParseOptionalDLLStorageClass(DLLStorageClass) ||
3162 ParseOptionalCallingConv(CC) ||
3163 ParseOptionalReturnAttrs(RetAttrs) ||
3164 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
3167 // Verify that the linkage is ok.
3168 switch ((GlobalValue::LinkageTypes)Linkage) {
3169 case GlobalValue::ExternalLinkage:
3170 break; // always ok.
3171 case GlobalValue::ExternalWeakLinkage:
3173 return Error(LinkageLoc, "invalid linkage for function definition");
3175 case GlobalValue::PrivateLinkage:
3176 case GlobalValue::InternalLinkage:
3177 case GlobalValue::AvailableExternallyLinkage:
3178 case GlobalValue::LinkOnceAnyLinkage:
3179 case GlobalValue::LinkOnceODRLinkage:
3180 case GlobalValue::WeakAnyLinkage:
3181 case GlobalValue::WeakODRLinkage:
3183 return Error(LinkageLoc, "invalid linkage for function declaration");
3185 case GlobalValue::AppendingLinkage:
3186 case GlobalValue::CommonLinkage:
3187 return Error(LinkageLoc, "invalid function linkage type");
3190 if (!isValidVisibilityForLinkage(Visibility, Linkage))
3191 return Error(LinkageLoc,
3192 "symbol with local linkage must have default visibility");
3194 if (!FunctionType::isValidReturnType(RetType))
3195 return Error(RetTypeLoc, "invalid function return type");
3197 LocTy NameLoc = Lex.getLoc();
3199 std::string FunctionName;
3200 if (Lex.getKind() == lltok::GlobalVar) {
3201 FunctionName = Lex.getStrVal();
3202 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
3203 unsigned NameID = Lex.getUIntVal();
3205 if (NameID != NumberedVals.size())
3206 return TokError("function expected to be numbered '%" +
3207 Twine(NumberedVals.size()) + "'");
3209 return TokError("expected function name");
3214 if (Lex.getKind() != lltok::lparen)
3215 return TokError("expected '(' in function argument list");
3217 SmallVector<ArgInfo, 8> ArgList;
3219 AttrBuilder FuncAttrs;
3220 std::vector<unsigned> FwdRefAttrGrps;
3222 std::string Section;
3226 LocTy UnnamedAddrLoc;
3227 Constant *Prefix = nullptr;
3228 Constant *Prologue = nullptr;
3231 if (ParseArgumentList(ArgList, isVarArg) ||
3232 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
3234 ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false,
3236 (EatIfPresent(lltok::kw_section) &&
3237 ParseStringConstant(Section)) ||
3238 parseOptionalComdat(C) ||
3239 ParseOptionalAlignment(Alignment) ||
3240 (EatIfPresent(lltok::kw_gc) &&
3241 ParseStringConstant(GC)) ||
3242 (EatIfPresent(lltok::kw_prefix) &&
3243 ParseGlobalTypeAndValue(Prefix)) ||
3244 (EatIfPresent(lltok::kw_prologue) &&
3245 ParseGlobalTypeAndValue(Prologue)))
3248 if (FuncAttrs.contains(Attribute::Builtin))
3249 return Error(BuiltinLoc, "'builtin' attribute not valid on function");
3251 // If the alignment was parsed as an attribute, move to the alignment field.
3252 if (FuncAttrs.hasAlignmentAttr()) {
3253 Alignment = FuncAttrs.getAlignment();
3254 FuncAttrs.removeAttribute(Attribute::Alignment);
3257 // Okay, if we got here, the function is syntactically valid. Convert types
3258 // and do semantic checks.
3259 std::vector<Type*> ParamTypeList;
3260 SmallVector<AttributeSet, 8> Attrs;
3262 if (RetAttrs.hasAttributes())
3263 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3264 AttributeSet::ReturnIndex,
3267 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3268 ParamTypeList.push_back(ArgList[i].Ty);
3269 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
3270 AttrBuilder B(ArgList[i].Attrs, i + 1);
3271 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
3275 if (FuncAttrs.hasAttributes())
3276 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3277 AttributeSet::FunctionIndex,
3280 AttributeSet PAL = AttributeSet::get(Context, Attrs);
3282 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
3283 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
3286 FunctionType::get(RetType, ParamTypeList, isVarArg);
3287 PointerType *PFT = PointerType::getUnqual(FT);
3290 if (!FunctionName.empty()) {
3291 // If this was a definition of a forward reference, remove the definition
3292 // from the forward reference table and fill in the forward ref.
3293 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
3294 ForwardRefVals.find(FunctionName);
3295 if (FRVI != ForwardRefVals.end()) {
3296 Fn = M->getFunction(FunctionName);
3298 return Error(FRVI->second.second, "invalid forward reference to "
3299 "function as global value!");
3300 if (Fn->getType() != PFT)
3301 return Error(FRVI->second.second, "invalid forward reference to "
3302 "function '" + FunctionName + "' with wrong type!");
3304 ForwardRefVals.erase(FRVI);
3305 } else if ((Fn = M->getFunction(FunctionName))) {
3306 // Reject redefinitions.
3307 return Error(NameLoc, "invalid redefinition of function '" +
3308 FunctionName + "'");
3309 } else if (M->getNamedValue(FunctionName)) {
3310 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
3314 // If this is a definition of a forward referenced function, make sure the
3316 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
3317 = ForwardRefValIDs.find(NumberedVals.size());
3318 if (I != ForwardRefValIDs.end()) {
3319 Fn = cast<Function>(I->second.first);
3320 if (Fn->getType() != PFT)
3321 return Error(NameLoc, "type of definition and forward reference of '@" +
3322 Twine(NumberedVals.size()) + "' disagree");
3323 ForwardRefValIDs.erase(I);
3328 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
3329 else // Move the forward-reference to the correct spot in the module.
3330 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
3332 if (FunctionName.empty())
3333 NumberedVals.push_back(Fn);
3335 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
3336 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
3337 Fn->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
3338 Fn->setCallingConv(CC);
3339 Fn->setAttributes(PAL);
3340 Fn->setUnnamedAddr(UnnamedAddr);
3341 Fn->setAlignment(Alignment);
3342 Fn->setSection(Section);
3344 if (!GC.empty()) Fn->setGC(GC.c_str());
3345 Fn->setPrefixData(Prefix);
3346 Fn->setPrologueData(Prologue);
3347 ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
3349 // Add all of the arguments we parsed to the function.
3350 Function::arg_iterator ArgIt = Fn->arg_begin();
3351 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
3352 // If the argument has a name, insert it into the argument symbol table.
3353 if (ArgList[i].Name.empty()) continue;
3355 // Set the name, if it conflicted, it will be auto-renamed.
3356 ArgIt->setName(ArgList[i].Name);
3358 if (ArgIt->getName() != ArgList[i].Name)
3359 return Error(ArgList[i].Loc, "redefinition of argument '%" +
3360 ArgList[i].Name + "'");
3366 // Check the declaration has no block address forward references.
3368 if (FunctionName.empty()) {
3369 ID.Kind = ValID::t_GlobalID;
3370 ID.UIntVal = NumberedVals.size() - 1;
3372 ID.Kind = ValID::t_GlobalName;
3373 ID.StrVal = FunctionName;
3375 auto Blocks = ForwardRefBlockAddresses.find(ID);
3376 if (Blocks != ForwardRefBlockAddresses.end())
3377 return Error(Blocks->first.Loc,
3378 "cannot take blockaddress inside a declaration");
3382 bool LLParser::PerFunctionState::resolveForwardRefBlockAddresses() {
3384 if (FunctionNumber == -1) {
3385 ID.Kind = ValID::t_GlobalName;
3386 ID.StrVal = F.getName();
3388 ID.Kind = ValID::t_GlobalID;
3389 ID.UIntVal = FunctionNumber;
3392 auto Blocks = P.ForwardRefBlockAddresses.find(ID);
3393 if (Blocks == P.ForwardRefBlockAddresses.end())
3396 for (const auto &I : Blocks->second) {
3397 const ValID &BBID = I.first;
3398 GlobalValue *GV = I.second;
3400 assert((BBID.Kind == ValID::t_LocalID || BBID.Kind == ValID::t_LocalName) &&
3401 "Expected local id or name");
3403 if (BBID.Kind == ValID::t_LocalName)
3404 BB = GetBB(BBID.StrVal, BBID.Loc);
3406 BB = GetBB(BBID.UIntVal, BBID.Loc);
3408 return P.Error(BBID.Loc, "referenced value is not a basic block");
3410 GV->replaceAllUsesWith(BlockAddress::get(&F, BB));
3411 GV->eraseFromParent();
3414 P.ForwardRefBlockAddresses.erase(Blocks);
3418 /// ParseFunctionBody
3419 /// ::= '{' BasicBlock+ UseListOrderDirective* '}'
3420 bool LLParser::ParseFunctionBody(Function &Fn) {
3421 if (Lex.getKind() != lltok::lbrace)
3422 return TokError("expected '{' in function body");
3423 Lex.Lex(); // eat the {.
3425 int FunctionNumber = -1;
3426 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
3428 PerFunctionState PFS(*this, Fn, FunctionNumber);
3430 // Resolve block addresses and allow basic blocks to be forward-declared
3431 // within this function.
3432 if (PFS.resolveForwardRefBlockAddresses())
3434 SaveAndRestore<PerFunctionState *> ScopeExit(BlockAddressPFS, &PFS);
3436 // We need at least one basic block.
3437 if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_uselistorder)
3438 return TokError("function body requires at least one basic block");
3440 while (Lex.getKind() != lltok::rbrace &&
3441 Lex.getKind() != lltok::kw_uselistorder)
3442 if (ParseBasicBlock(PFS)) return true;
3444 while (Lex.getKind() != lltok::rbrace)
3445 if (ParseUseListOrder(&PFS))
3451 // Verify function is ok.
3452 return PFS.FinishFunction();
3456 /// ::= LabelStr? Instruction*
3457 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
3458 // If this basic block starts out with a name, remember it.
3460 LocTy NameLoc = Lex.getLoc();
3461 if (Lex.getKind() == lltok::LabelStr) {
3462 Name = Lex.getStrVal();
3466 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
3467 if (!BB) return true;
3469 std::string NameStr;
3471 // Parse the instructions in this block until we get a terminator.
3474 // This instruction may have three possibilities for a name: a) none
3475 // specified, b) name specified "%foo =", c) number specified: "%4 =".
3476 LocTy NameLoc = Lex.getLoc();
3480 if (Lex.getKind() == lltok::LocalVarID) {
3481 NameID = Lex.getUIntVal();
3483 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
3485 } else if (Lex.getKind() == lltok::LocalVar) {
3486 NameStr = Lex.getStrVal();
3488 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
3492 switch (ParseInstruction(Inst, BB, PFS)) {
3493 default: llvm_unreachable("Unknown ParseInstruction result!");
3494 case InstError: return true;
3496 BB->getInstList().push_back(Inst);
3498 // With a normal result, we check to see if the instruction is followed by
3499 // a comma and metadata.
3500 if (EatIfPresent(lltok::comma))
3501 if (ParseInstructionMetadata(Inst, &PFS))
3504 case InstExtraComma:
3505 BB->getInstList().push_back(Inst);
3507 // If the instruction parser ate an extra comma at the end of it, it
3508 // *must* be followed by metadata.
3509 if (ParseInstructionMetadata(Inst, &PFS))
3514 // Set the name on the instruction.
3515 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
3516 } while (!isa<TerminatorInst>(Inst));
3521 //===----------------------------------------------------------------------===//
3522 // Instruction Parsing.
3523 //===----------------------------------------------------------------------===//
3525 /// ParseInstruction - Parse one of the many different instructions.
3527 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
3528 PerFunctionState &PFS) {
3529 lltok::Kind Token = Lex.getKind();
3530 if (Token == lltok::Eof)
3531 return TokError("found end of file when expecting more instructions");
3532 LocTy Loc = Lex.getLoc();
3533 unsigned KeywordVal = Lex.getUIntVal();
3534 Lex.Lex(); // Eat the keyword.
3537 default: return Error(Loc, "expected instruction opcode");
3538 // Terminator Instructions.
3539 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
3540 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
3541 case lltok::kw_br: return ParseBr(Inst, PFS);
3542 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
3543 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
3544 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
3545 case lltok::kw_resume: return ParseResume(Inst, PFS);
3546 // Binary Operators.
3550 case lltok::kw_shl: {
3551 bool NUW = EatIfPresent(lltok::kw_nuw);
3552 bool NSW = EatIfPresent(lltok::kw_nsw);
3553 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
3555 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3557 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
3558 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
3561 case lltok::kw_fadd:
3562 case lltok::kw_fsub:
3563 case lltok::kw_fmul:
3564 case lltok::kw_fdiv:
3565 case lltok::kw_frem: {
3566 FastMathFlags FMF = EatFastMathFlagsIfPresent();
3567 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
3571 Inst->setFastMathFlags(FMF);
3575 case lltok::kw_sdiv:
3576 case lltok::kw_udiv:
3577 case lltok::kw_lshr:
3578 case lltok::kw_ashr: {
3579 bool Exact = EatIfPresent(lltok::kw_exact);
3581 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3582 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
3586 case lltok::kw_urem:
3587 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
3590 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
3591 case lltok::kw_icmp:
3592 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
3594 case lltok::kw_trunc:
3595 case lltok::kw_zext:
3596 case lltok::kw_sext:
3597 case lltok::kw_fptrunc:
3598 case lltok::kw_fpext:
3599 case lltok::kw_bitcast:
3600 case lltok::kw_addrspacecast:
3601 case lltok::kw_uitofp:
3602 case lltok::kw_sitofp:
3603 case lltok::kw_fptoui:
3604 case lltok::kw_fptosi:
3605 case lltok::kw_inttoptr:
3606 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
3608 case lltok::kw_select: return ParseSelect(Inst, PFS);
3609 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
3610 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
3611 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
3612 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
3613 case lltok::kw_phi: return ParsePHI(Inst, PFS);
3614 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
3616 case lltok::kw_call: return ParseCall(Inst, PFS, CallInst::TCK_None);
3617 case lltok::kw_tail: return ParseCall(Inst, PFS, CallInst::TCK_Tail);
3618 case lltok::kw_musttail: return ParseCall(Inst, PFS, CallInst::TCK_MustTail);
3620 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
3621 case lltok::kw_load: return ParseLoad(Inst, PFS);
3622 case lltok::kw_store: return ParseStore(Inst, PFS);
3623 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
3624 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
3625 case lltok::kw_fence: return ParseFence(Inst, PFS);
3626 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
3627 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
3628 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
3632 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
3633 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
3634 if (Opc == Instruction::FCmp) {
3635 switch (Lex.getKind()) {
3636 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
3637 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
3638 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
3639 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
3640 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
3641 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
3642 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
3643 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
3644 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
3645 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
3646 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
3647 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
3648 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
3649 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
3650 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
3651 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
3652 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
3655 switch (Lex.getKind()) {
3656 default: return TokError("expected icmp predicate (e.g. 'eq')");
3657 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
3658 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
3659 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
3660 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
3661 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
3662 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
3663 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
3664 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
3665 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
3666 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3673 //===----------------------------------------------------------------------===//
3674 // Terminator Instructions.
3675 //===----------------------------------------------------------------------===//
3677 /// ParseRet - Parse a return instruction.
3678 /// ::= 'ret' void (',' !dbg, !1)*
3679 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
3680 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3681 PerFunctionState &PFS) {
3682 SMLoc TypeLoc = Lex.getLoc();
3684 if (ParseType(Ty, true /*void allowed*/)) return true;
3686 Type *ResType = PFS.getFunction().getReturnType();
3688 if (Ty->isVoidTy()) {
3689 if (!ResType->isVoidTy())
3690 return Error(TypeLoc, "value doesn't match function result type '" +
3691 getTypeString(ResType) + "'");
3693 Inst = ReturnInst::Create(Context);
3698 if (ParseValue(Ty, RV, PFS)) return true;
3700 if (ResType != RV->getType())
3701 return Error(TypeLoc, "value doesn't match function result type '" +
3702 getTypeString(ResType) + "'");
3704 Inst = ReturnInst::Create(Context, RV);
3710 /// ::= 'br' TypeAndValue
3711 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3712 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
3715 BasicBlock *Op1, *Op2;
3716 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
3718 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
3719 Inst = BranchInst::Create(BB);
3723 if (Op0->getType() != Type::getInt1Ty(Context))
3724 return Error(Loc, "branch condition must have 'i1' type");
3726 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
3727 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
3728 ParseToken(lltok::comma, "expected ',' after true destination") ||
3729 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
3732 Inst = BranchInst::Create(Op1, Op2, Op0);
3738 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
3740 /// ::= (TypeAndValue ',' TypeAndValue)*
3741 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
3742 LocTy CondLoc, BBLoc;
3744 BasicBlock *DefaultBB;
3745 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
3746 ParseToken(lltok::comma, "expected ',' after switch condition") ||
3747 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
3748 ParseToken(lltok::lsquare, "expected '[' with switch table"))
3751 if (!Cond->getType()->isIntegerTy())
3752 return Error(CondLoc, "switch condition must have integer type");
3754 // Parse the jump table pairs.
3755 SmallPtrSet<Value*, 32> SeenCases;
3756 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
3757 while (Lex.getKind() != lltok::rsquare) {
3761 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
3762 ParseToken(lltok::comma, "expected ',' after case value") ||
3763 ParseTypeAndBasicBlock(DestBB, PFS))
3766 if (!SeenCases.insert(Constant).second)
3767 return Error(CondLoc, "duplicate case value in switch");
3768 if (!isa<ConstantInt>(Constant))
3769 return Error(CondLoc, "case value is not a constant integer");
3771 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
3774 Lex.Lex(); // Eat the ']'.
3776 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
3777 for (unsigned i = 0, e = Table.size(); i != e; ++i)
3778 SI->addCase(Table[i].first, Table[i].second);
3785 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
3786 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
3789 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
3790 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
3791 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
3794 if (!Address->getType()->isPointerTy())
3795 return Error(AddrLoc, "indirectbr address must have pointer type");
3797 // Parse the destination list.
3798 SmallVector<BasicBlock*, 16> DestList;
3800 if (Lex.getKind() != lltok::rsquare) {
3802 if (ParseTypeAndBasicBlock(DestBB, PFS))
3804 DestList.push_back(DestBB);
3806 while (EatIfPresent(lltok::comma)) {
3807 if (ParseTypeAndBasicBlock(DestBB, PFS))
3809 DestList.push_back(DestBB);
3813 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
3816 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
3817 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
3818 IBI->addDestination(DestList[i]);
3825 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3826 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3827 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3828 LocTy CallLoc = Lex.getLoc();
3829 AttrBuilder RetAttrs, FnAttrs;
3830 std::vector<unsigned> FwdRefAttrGrps;
3833 Type *RetType = nullptr;
3836 SmallVector<ParamInfo, 16> ArgList;
3838 BasicBlock *NormalBB, *UnwindBB;
3839 if (ParseOptionalCallingConv(CC) ||
3840 ParseOptionalReturnAttrs(RetAttrs) ||
3841 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3842 ParseValID(CalleeID) ||
3843 ParseParameterList(ArgList, PFS) ||
3844 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
3846 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3847 ParseTypeAndBasicBlock(NormalBB, PFS) ||
3848 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3849 ParseTypeAndBasicBlock(UnwindBB, PFS))
3852 // If RetType is a non-function pointer type, then this is the short syntax
3853 // for the call, which means that RetType is just the return type. Infer the
3854 // rest of the function argument types from the arguments that are present.
3855 PointerType *PFTy = nullptr;
3856 FunctionType *Ty = nullptr;
3857 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3858 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3859 // Pull out the types of all of the arguments...
3860 std::vector<Type*> ParamTypes;
3861 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3862 ParamTypes.push_back(ArgList[i].V->getType());
3864 if (!FunctionType::isValidReturnType(RetType))
3865 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3867 Ty = FunctionType::get(RetType, ParamTypes, false);
3868 PFTy = PointerType::getUnqual(Ty);
3871 // Look up the callee.
3873 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3875 // Set up the Attribute for the function.
3876 SmallVector<AttributeSet, 8> Attrs;
3877 if (RetAttrs.hasAttributes())
3878 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3879 AttributeSet::ReturnIndex,
3882 SmallVector<Value*, 8> Args;
3884 // Loop through FunctionType's arguments and ensure they are specified
3885 // correctly. Also, gather any parameter attributes.
3886 FunctionType::param_iterator I = Ty->param_begin();
3887 FunctionType::param_iterator E = Ty->param_end();
3888 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3889 Type *ExpectedTy = nullptr;
3892 } else if (!Ty->isVarArg()) {
3893 return Error(ArgList[i].Loc, "too many arguments specified");
3896 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3897 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3898 getTypeString(ExpectedTy) + "'");
3899 Args.push_back(ArgList[i].V);
3900 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
3901 AttrBuilder B(ArgList[i].Attrs, i + 1);
3902 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
3907 return Error(CallLoc, "not enough parameters specified for call");
3909 if (FnAttrs.hasAttributes())
3910 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3911 AttributeSet::FunctionIndex,
3914 // Finish off the Attribute and check them
3915 AttributeSet PAL = AttributeSet::get(Context, Attrs);
3917 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB, Args);
3918 II->setCallingConv(CC);
3919 II->setAttributes(PAL);
3920 ForwardRefAttrGroups[II] = FwdRefAttrGrps;
3926 /// ::= 'resume' TypeAndValue
3927 bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
3928 Value *Exn; LocTy ExnLoc;
3929 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
3932 ResumeInst *RI = ResumeInst::Create(Exn);
3937 //===----------------------------------------------------------------------===//
3938 // Binary Operators.
3939 //===----------------------------------------------------------------------===//
3942 /// ::= ArithmeticOps TypeAndValue ',' Value
3944 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3945 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3946 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3947 unsigned Opc, unsigned OperandType) {
3948 LocTy Loc; Value *LHS, *RHS;
3949 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3950 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3951 ParseValue(LHS->getType(), RHS, PFS))
3955 switch (OperandType) {
3956 default: llvm_unreachable("Unknown operand type!");
3957 case 0: // int or FP.
3958 Valid = LHS->getType()->isIntOrIntVectorTy() ||
3959 LHS->getType()->isFPOrFPVectorTy();
3961 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
3962 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
3966 return Error(Loc, "invalid operand type for instruction");
3968 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3973 /// ::= ArithmeticOps TypeAndValue ',' Value {
3974 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3976 LocTy Loc; Value *LHS, *RHS;
3977 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3978 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3979 ParseValue(LHS->getType(), RHS, PFS))
3982 if (!LHS->getType()->isIntOrIntVectorTy())
3983 return Error(Loc,"instruction requires integer or integer vector operands");
3985 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3991 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3992 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3993 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3995 // Parse the integer/fp comparison predicate.
3999 if (ParseCmpPredicate(Pred, Opc) ||
4000 ParseTypeAndValue(LHS, Loc, PFS) ||
4001 ParseToken(lltok::comma, "expected ',' after compare value") ||
4002 ParseValue(LHS->getType(), RHS, PFS))
4005 if (Opc == Instruction::FCmp) {
4006 if (!LHS->getType()->isFPOrFPVectorTy())
4007 return Error(Loc, "fcmp requires floating point operands");
4008 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
4010 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
4011 if (!LHS->getType()->isIntOrIntVectorTy() &&
4012 !LHS->getType()->getScalarType()->isPointerTy())
4013 return Error(Loc, "icmp requires integer operands");
4014 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
4019 //===----------------------------------------------------------------------===//
4020 // Other Instructions.
4021 //===----------------------------------------------------------------------===//
4025 /// ::= CastOpc TypeAndValue 'to' Type
4026 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
4030 Type *DestTy = nullptr;
4031 if (ParseTypeAndValue(Op, Loc, PFS) ||
4032 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
4036 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
4037 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
4038 return Error(Loc, "invalid cast opcode for cast from '" +
4039 getTypeString(Op->getType()) + "' to '" +
4040 getTypeString(DestTy) + "'");
4042 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
4047 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
4048 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
4050 Value *Op0, *Op1, *Op2;
4051 if (ParseTypeAndValue(Op0, Loc, PFS) ||
4052 ParseToken(lltok::comma, "expected ',' after select condition") ||
4053 ParseTypeAndValue(Op1, PFS) ||
4054 ParseToken(lltok::comma, "expected ',' after select value") ||
4055 ParseTypeAndValue(Op2, PFS))
4058 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
4059 return Error(Loc, Reason);
4061 Inst = SelectInst::Create(Op0, Op1, Op2);
4066 /// ::= 'va_arg' TypeAndValue ',' Type
4067 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
4069 Type *EltTy = nullptr;
4071 if (ParseTypeAndValue(Op, PFS) ||
4072 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
4073 ParseType(EltTy, TypeLoc))
4076 if (!EltTy->isFirstClassType())
4077 return Error(TypeLoc, "va_arg requires operand with first class type");
4079 Inst = new VAArgInst(Op, EltTy);
4083 /// ParseExtractElement
4084 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
4085 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
4088 if (ParseTypeAndValue(Op0, Loc, PFS) ||
4089 ParseToken(lltok::comma, "expected ',' after extract value") ||
4090 ParseTypeAndValue(Op1, PFS))
4093 if (!ExtractElementInst::isValidOperands(Op0, Op1))
4094 return Error(Loc, "invalid extractelement operands");
4096 Inst = ExtractElementInst::Create(Op0, Op1);
4100 /// ParseInsertElement
4101 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
4102 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
4104 Value *Op0, *Op1, *Op2;
4105 if (ParseTypeAndValue(Op0, Loc, PFS) ||
4106 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
4107 ParseTypeAndValue(Op1, PFS) ||
4108 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
4109 ParseTypeAndValue(Op2, PFS))
4112 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
4113 return Error(Loc, "invalid insertelement operands");
4115 Inst = InsertElementInst::Create(Op0, Op1, Op2);
4119 /// ParseShuffleVector
4120 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
4121 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
4123 Value *Op0, *Op1, *Op2;
4124 if (ParseTypeAndValue(Op0, Loc, PFS) ||
4125 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
4126 ParseTypeAndValue(Op1, PFS) ||
4127 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
4128 ParseTypeAndValue(Op2, PFS))
4131 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
4132 return Error(Loc, "invalid shufflevector operands");
4134 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
4139 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
4140 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
4141 Type *Ty = nullptr; LocTy TypeLoc;
4144 if (ParseType(Ty, TypeLoc) ||
4145 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
4146 ParseValue(Ty, Op0, PFS) ||
4147 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
4148 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
4149 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
4152 bool AteExtraComma = false;
4153 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
4155 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
4157 if (!EatIfPresent(lltok::comma))
4160 if (Lex.getKind() == lltok::MetadataVar) {
4161 AteExtraComma = true;
4165 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
4166 ParseValue(Ty, Op0, PFS) ||
4167 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
4168 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
4169 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
4173 if (!Ty->isFirstClassType())
4174 return Error(TypeLoc, "phi node must have first class type");
4176 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
4177 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
4178 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
4180 return AteExtraComma ? InstExtraComma : InstNormal;
4184 /// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
4186 /// ::= 'catch' TypeAndValue
4188 /// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
4189 bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
4190 Type *Ty = nullptr; LocTy TyLoc;
4191 Value *PersFn; LocTy PersFnLoc;
4193 if (ParseType(Ty, TyLoc) ||
4194 ParseToken(lltok::kw_personality, "expected 'personality'") ||
4195 ParseTypeAndValue(PersFn, PersFnLoc, PFS))
4198 LandingPadInst *LP = LandingPadInst::Create(Ty, PersFn, 0);
4199 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
4201 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
4202 LandingPadInst::ClauseType CT;
4203 if (EatIfPresent(lltok::kw_catch))
4204 CT = LandingPadInst::Catch;
4205 else if (EatIfPresent(lltok::kw_filter))
4206 CT = LandingPadInst::Filter;
4208 return TokError("expected 'catch' or 'filter' clause type");
4212 if (ParseTypeAndValue(V, VLoc, PFS)) {
4217 // A 'catch' type expects a non-array constant. A filter clause expects an
4219 if (CT == LandingPadInst::Catch) {
4220 if (isa<ArrayType>(V->getType()))
4221 Error(VLoc, "'catch' clause has an invalid type");
4223 if (!isa<ArrayType>(V->getType()))
4224 Error(VLoc, "'filter' clause has an invalid type");
4227 LP->addClause(cast<Constant>(V));
4235 /// ::= 'call' OptionalCallingConv OptionalAttrs Type Value
4236 /// ParameterList OptionalAttrs
4237 /// ::= 'tail' 'call' OptionalCallingConv OptionalAttrs Type Value
4238 /// ParameterList OptionalAttrs
4239 /// ::= 'musttail' 'call' OptionalCallingConv OptionalAttrs Type Value
4240 /// ParameterList OptionalAttrs
4241 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
4242 CallInst::TailCallKind TCK) {
4243 AttrBuilder RetAttrs, FnAttrs;
4244 std::vector<unsigned> FwdRefAttrGrps;
4247 Type *RetType = nullptr;
4250 SmallVector<ParamInfo, 16> ArgList;
4251 LocTy CallLoc = Lex.getLoc();
4253 if ((TCK != CallInst::TCK_None &&
4254 ParseToken(lltok::kw_call, "expected 'tail call'")) ||
4255 ParseOptionalCallingConv(CC) ||
4256 ParseOptionalReturnAttrs(RetAttrs) ||
4257 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
4258 ParseValID(CalleeID) ||
4259 ParseParameterList(ArgList, PFS, TCK == CallInst::TCK_MustTail,
4260 PFS.getFunction().isVarArg()) ||
4261 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
4265 // If RetType is a non-function pointer type, then this is the short syntax
4266 // for the call, which means that RetType is just the return type. Infer the
4267 // rest of the function argument types from the arguments that are present.
4268 PointerType *PFTy = nullptr;
4269 FunctionType *Ty = nullptr;
4270 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
4271 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
4272 // Pull out the types of all of the arguments...
4273 std::vector<Type*> ParamTypes;
4274 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
4275 ParamTypes.push_back(ArgList[i].V->getType());
4277 if (!FunctionType::isValidReturnType(RetType))
4278 return Error(RetTypeLoc, "Invalid result type for LLVM function");
4280 Ty = FunctionType::get(RetType, ParamTypes, false);
4281 PFTy = PointerType::getUnqual(Ty);
4284 // Look up the callee.
4286 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
4288 // Set up the Attribute for the function.
4289 SmallVector<AttributeSet, 8> Attrs;
4290 if (RetAttrs.hasAttributes())
4291 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4292 AttributeSet::ReturnIndex,
4295 SmallVector<Value*, 8> Args;
4297 // Loop through FunctionType's arguments and ensure they are specified
4298 // correctly. Also, gather any parameter attributes.
4299 FunctionType::param_iterator I = Ty->param_begin();
4300 FunctionType::param_iterator E = Ty->param_end();
4301 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
4302 Type *ExpectedTy = nullptr;
4305 } else if (!Ty->isVarArg()) {
4306 return Error(ArgList[i].Loc, "too many arguments specified");
4309 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
4310 return Error(ArgList[i].Loc, "argument is not of expected type '" +
4311 getTypeString(ExpectedTy) + "'");
4312 Args.push_back(ArgList[i].V);
4313 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
4314 AttrBuilder B(ArgList[i].Attrs, i + 1);
4315 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
4320 return Error(CallLoc, "not enough parameters specified for call");
4322 if (FnAttrs.hasAttributes())
4323 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4324 AttributeSet::FunctionIndex,
4327 // Finish off the Attribute and check them
4328 AttributeSet PAL = AttributeSet::get(Context, Attrs);
4330 CallInst *CI = CallInst::Create(Callee, Args);
4331 CI->setTailCallKind(TCK);
4332 CI->setCallingConv(CC);
4333 CI->setAttributes(PAL);
4334 ForwardRefAttrGroups[CI] = FwdRefAttrGrps;
4339 //===----------------------------------------------------------------------===//
4340 // Memory Instructions.
4341 //===----------------------------------------------------------------------===//
4344 /// ::= 'alloca' 'inalloca'? Type (',' TypeAndValue)? (',' 'align' i32)?
4345 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
4346 Value *Size = nullptr;
4348 unsigned Alignment = 0;
4351 bool IsInAlloca = EatIfPresent(lltok::kw_inalloca);
4353 if (ParseType(Ty)) return true;
4355 bool AteExtraComma = false;
4356 if (EatIfPresent(lltok::comma)) {
4357 if (Lex.getKind() == lltok::kw_align) {
4358 if (ParseOptionalAlignment(Alignment)) return true;
4359 } else if (Lex.getKind() == lltok::MetadataVar) {
4360 AteExtraComma = true;
4362 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
4363 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4368 if (Size && !Size->getType()->isIntegerTy())
4369 return Error(SizeLoc, "element count must have integer type");
4371 AllocaInst *AI = new AllocaInst(Ty, Size, Alignment);
4372 AI->setUsedWithInAlloca(IsInAlloca);
4374 return AteExtraComma ? InstExtraComma : InstNormal;
4378 /// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
4379 /// ::= 'load' 'atomic' 'volatile'? TypeAndValue
4380 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
4381 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
4382 Value *Val; LocTy Loc;
4383 unsigned Alignment = 0;
4384 bool AteExtraComma = false;
4385 bool isAtomic = false;
4386 AtomicOrdering Ordering = NotAtomic;
4387 SynchronizationScope Scope = CrossThread;
4389 if (Lex.getKind() == lltok::kw_atomic) {
4394 bool isVolatile = false;
4395 if (Lex.getKind() == lltok::kw_volatile) {
4400 if (ParseTypeAndValue(Val, Loc, PFS) ||
4401 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
4402 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4405 if (!Val->getType()->isPointerTy() ||
4406 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
4407 return Error(Loc, "load operand must be a pointer to a first class type");
4408 if (isAtomic && !Alignment)
4409 return Error(Loc, "atomic load must have explicit non-zero alignment");
4410 if (Ordering == Release || Ordering == AcquireRelease)
4411 return Error(Loc, "atomic load cannot use Release ordering");
4413 Inst = new LoadInst(Val, "", isVolatile, Alignment, Ordering, Scope);
4414 return AteExtraComma ? InstExtraComma : InstNormal;
4419 /// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
4420 /// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
4421 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
4422 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
4423 Value *Val, *Ptr; LocTy Loc, PtrLoc;
4424 unsigned Alignment = 0;
4425 bool AteExtraComma = false;
4426 bool isAtomic = false;
4427 AtomicOrdering Ordering = NotAtomic;
4428 SynchronizationScope Scope = CrossThread;
4430 if (Lex.getKind() == lltok::kw_atomic) {
4435 bool isVolatile = false;
4436 if (Lex.getKind() == lltok::kw_volatile) {
4441 if (ParseTypeAndValue(Val, Loc, PFS) ||
4442 ParseToken(lltok::comma, "expected ',' after store operand") ||
4443 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4444 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
4445 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4448 if (!Ptr->getType()->isPointerTy())
4449 return Error(PtrLoc, "store operand must be a pointer");
4450 if (!Val->getType()->isFirstClassType())
4451 return Error(Loc, "store operand must be a first class value");
4452 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
4453 return Error(Loc, "stored value and pointer type do not match");
4454 if (isAtomic && !Alignment)
4455 return Error(Loc, "atomic store must have explicit non-zero alignment");
4456 if (Ordering == Acquire || Ordering == AcquireRelease)
4457 return Error(Loc, "atomic store cannot use Acquire ordering");
4459 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, Scope);
4460 return AteExtraComma ? InstExtraComma : InstNormal;
4464 /// ::= 'cmpxchg' 'weak'? 'volatile'? TypeAndValue ',' TypeAndValue ','
4465 /// TypeAndValue 'singlethread'? AtomicOrdering AtomicOrdering
4466 int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
4467 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
4468 bool AteExtraComma = false;
4469 AtomicOrdering SuccessOrdering = NotAtomic;
4470 AtomicOrdering FailureOrdering = NotAtomic;
4471 SynchronizationScope Scope = CrossThread;
4472 bool isVolatile = false;
4473 bool isWeak = false;
4475 if (EatIfPresent(lltok::kw_weak))
4478 if (EatIfPresent(lltok::kw_volatile))
4481 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4482 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
4483 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
4484 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
4485 ParseTypeAndValue(New, NewLoc, PFS) ||
4486 ParseScopeAndOrdering(true /*Always atomic*/, Scope, SuccessOrdering) ||
4487 ParseOrdering(FailureOrdering))
4490 if (SuccessOrdering == Unordered || FailureOrdering == Unordered)
4491 return TokError("cmpxchg cannot be unordered");
4492 if (SuccessOrdering < FailureOrdering)
4493 return TokError("cmpxchg must be at least as ordered on success as failure");
4494 if (FailureOrdering == Release || FailureOrdering == AcquireRelease)
4495 return TokError("cmpxchg failure ordering cannot include release semantics");
4496 if (!Ptr->getType()->isPointerTy())
4497 return Error(PtrLoc, "cmpxchg operand must be a pointer");
4498 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
4499 return Error(CmpLoc, "compare value and pointer type do not match");
4500 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
4501 return Error(NewLoc, "new value and pointer type do not match");
4502 if (!New->getType()->isIntegerTy())
4503 return Error(NewLoc, "cmpxchg operand must be an integer");
4504 unsigned Size = New->getType()->getPrimitiveSizeInBits();
4505 if (Size < 8 || (Size & (Size - 1)))
4506 return Error(NewLoc, "cmpxchg operand must be power-of-two byte-sized"
4509 AtomicCmpXchgInst *CXI = new AtomicCmpXchgInst(
4510 Ptr, Cmp, New, SuccessOrdering, FailureOrdering, Scope);
4511 CXI->setVolatile(isVolatile);
4512 CXI->setWeak(isWeak);
4514 return AteExtraComma ? InstExtraComma : InstNormal;
4518 /// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
4519 /// 'singlethread'? AtomicOrdering
4520 int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
4521 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
4522 bool AteExtraComma = false;
4523 AtomicOrdering Ordering = NotAtomic;
4524 SynchronizationScope Scope = CrossThread;
4525 bool isVolatile = false;
4526 AtomicRMWInst::BinOp Operation;
4528 if (EatIfPresent(lltok::kw_volatile))
4531 switch (Lex.getKind()) {
4532 default: return TokError("expected binary operation in atomicrmw");
4533 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
4534 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
4535 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
4536 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
4537 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
4538 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
4539 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
4540 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
4541 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
4542 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
4543 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
4545 Lex.Lex(); // Eat the operation.
4547 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4548 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
4549 ParseTypeAndValue(Val, ValLoc, PFS) ||
4550 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4553 if (Ordering == Unordered)
4554 return TokError("atomicrmw cannot be unordered");
4555 if (!Ptr->getType()->isPointerTy())
4556 return Error(PtrLoc, "atomicrmw operand must be a pointer");
4557 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
4558 return Error(ValLoc, "atomicrmw value and pointer type do not match");
4559 if (!Val->getType()->isIntegerTy())
4560 return Error(ValLoc, "atomicrmw operand must be an integer");
4561 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
4562 if (Size < 8 || (Size & (Size - 1)))
4563 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
4566 AtomicRMWInst *RMWI =
4567 new AtomicRMWInst(Operation, Ptr, Val, Ordering, Scope);
4568 RMWI->setVolatile(isVolatile);
4570 return AteExtraComma ? InstExtraComma : InstNormal;
4574 /// ::= 'fence' 'singlethread'? AtomicOrdering
4575 int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
4576 AtomicOrdering Ordering = NotAtomic;
4577 SynchronizationScope Scope = CrossThread;
4578 if (ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4581 if (Ordering == Unordered)
4582 return TokError("fence cannot be unordered");
4583 if (Ordering == Monotonic)
4584 return TokError("fence cannot be monotonic");
4586 Inst = new FenceInst(Context, Ordering, Scope);
4590 /// ParseGetElementPtr
4591 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
4592 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
4593 Value *Ptr = nullptr;
4594 Value *Val = nullptr;
4597 bool InBounds = EatIfPresent(lltok::kw_inbounds);
4599 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
4601 Type *BaseType = Ptr->getType();
4602 PointerType *BasePointerType = dyn_cast<PointerType>(BaseType->getScalarType());
4603 if (!BasePointerType)
4604 return Error(Loc, "base of getelementptr must be a pointer");
4606 SmallVector<Value*, 16> Indices;
4607 bool AteExtraComma = false;
4608 while (EatIfPresent(lltok::comma)) {
4609 if (Lex.getKind() == lltok::MetadataVar) {
4610 AteExtraComma = true;
4613 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
4614 if (!Val->getType()->getScalarType()->isIntegerTy())
4615 return Error(EltLoc, "getelementptr index must be an integer");
4616 if (Val->getType()->isVectorTy() != Ptr->getType()->isVectorTy())
4617 return Error(EltLoc, "getelementptr index type missmatch");
4618 if (Val->getType()->isVectorTy()) {
4619 unsigned ValNumEl = cast<VectorType>(Val->getType())->getNumElements();
4620 unsigned PtrNumEl = cast<VectorType>(Ptr->getType())->getNumElements();
4621 if (ValNumEl != PtrNumEl)
4622 return Error(EltLoc,
4623 "getelementptr vector index has a wrong number of elements");
4625 Indices.push_back(Val);
4628 if (!Indices.empty() && !BasePointerType->getElementType()->isSized())
4629 return Error(Loc, "base element of getelementptr must be sized");
4631 if (!GetElementPtrInst::getIndexedType(BaseType, Indices))
4632 return Error(Loc, "invalid getelementptr indices");
4633 Inst = GetElementPtrInst::Create(Ptr, Indices);
4635 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
4636 return AteExtraComma ? InstExtraComma : InstNormal;
4639 /// ParseExtractValue
4640 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
4641 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
4642 Value *Val; LocTy Loc;
4643 SmallVector<unsigned, 4> Indices;
4645 if (ParseTypeAndValue(Val, Loc, PFS) ||
4646 ParseIndexList(Indices, AteExtraComma))
4649 if (!Val->getType()->isAggregateType())
4650 return Error(Loc, "extractvalue operand must be aggregate type");
4652 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
4653 return Error(Loc, "invalid indices for extractvalue");
4654 Inst = ExtractValueInst::Create(Val, Indices);
4655 return AteExtraComma ? InstExtraComma : InstNormal;
4658 /// ParseInsertValue
4659 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
4660 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
4661 Value *Val0, *Val1; LocTy Loc0, Loc1;
4662 SmallVector<unsigned, 4> Indices;
4664 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
4665 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
4666 ParseTypeAndValue(Val1, Loc1, PFS) ||
4667 ParseIndexList(Indices, AteExtraComma))
4670 if (!Val0->getType()->isAggregateType())
4671 return Error(Loc0, "insertvalue operand must be aggregate type");
4673 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
4674 return Error(Loc0, "invalid indices for insertvalue");
4675 Inst = InsertValueInst::Create(Val0, Val1, Indices);
4676 return AteExtraComma ? InstExtraComma : InstNormal;
4679 //===----------------------------------------------------------------------===//
4680 // Embedded metadata.
4681 //===----------------------------------------------------------------------===//
4683 /// ParseMDNodeVector
4684 /// ::= { Element (',' Element)* }
4686 /// ::= 'null' | TypeAndValue
4687 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Metadata *> &Elts,
4688 PerFunctionState *PFS) {
4689 if (ParseToken(lltok::lbrace, "expected '{' here"))
4692 // Check for an empty list.
4693 if (EatIfPresent(lltok::rbrace))
4696 bool IsLocal = false;
4699 return TokError("unexpected operand after function-local metadata");
4701 // Null is a special case since it is typeless.
4702 if (EatIfPresent(lltok::kw_null)) {
4703 Elts.push_back(nullptr);
4711 if (Ty->isMetadataTy()) {
4712 // No function-local metadata here.
4713 Metadata *MD = nullptr;
4714 if (ParseMetadata(MD, nullptr))
4721 if (ParseValue(Ty, V, PFS))
4723 assert(V && "Expected valid value");
4724 Elts.push_back(ValueAsMetadata::get(V));
4726 if (isa<LocalAsMetadata>(Elts.back())) {
4727 assert(PFS && "Unexpected function-local metadata without PFS");
4728 if (Elts.size() > 1)
4729 return TokError("unexpected function-local metadata");
4732 } while (EatIfPresent(lltok::comma));
4734 return ParseToken(lltok::rbrace, "expected end of metadata node");
4737 //===----------------------------------------------------------------------===//
4738 // Use-list order directives.
4739 //===----------------------------------------------------------------------===//
4740 bool LLParser::sortUseListOrder(Value *V, ArrayRef<unsigned> Indexes,
4743 return Error(Loc, "value has no uses");
4745 unsigned NumUses = 0;
4746 SmallDenseMap<const Use *, unsigned, 16> Order;
4747 for (const Use &U : V->uses()) {
4748 if (++NumUses > Indexes.size())
4750 Order[&U] = Indexes[NumUses - 1];
4753 return Error(Loc, "value only has one use");
4754 if (Order.size() != Indexes.size() || NumUses > Indexes.size())
4755 return Error(Loc, "wrong number of indexes, expected " +
4756 Twine(std::distance(V->use_begin(), V->use_end())));
4758 V->sortUseList([&](const Use &L, const Use &R) {
4759 return Order.lookup(&L) < Order.lookup(&R);
4764 /// ParseUseListOrderIndexes
4765 /// ::= '{' uint32 (',' uint32)+ '}'
4766 bool LLParser::ParseUseListOrderIndexes(SmallVectorImpl<unsigned> &Indexes) {
4767 SMLoc Loc = Lex.getLoc();
4768 if (ParseToken(lltok::lbrace, "expected '{' here"))
4770 if (Lex.getKind() == lltok::rbrace)
4771 return Lex.Error("expected non-empty list of uselistorder indexes");
4773 // Use Offset, Max, and IsOrdered to check consistency of indexes. The
4774 // indexes should be distinct numbers in the range [0, size-1], and should
4776 unsigned Offset = 0;
4778 bool IsOrdered = true;
4779 assert(Indexes.empty() && "Expected empty order vector");
4782 if (ParseUInt32(Index))
4785 // Update consistency checks.
4786 Offset += Index - Indexes.size();
4787 Max = std::max(Max, Index);
4788 IsOrdered &= Index == Indexes.size();
4790 Indexes.push_back(Index);
4791 } while (EatIfPresent(lltok::comma));
4793 if (ParseToken(lltok::rbrace, "expected '}' here"))
4796 if (Indexes.size() < 2)
4797 return Error(Loc, "expected >= 2 uselistorder indexes");
4798 if (Offset != 0 || Max >= Indexes.size())
4799 return Error(Loc, "expected distinct uselistorder indexes in range [0, size)");
4801 return Error(Loc, "expected uselistorder indexes to change the order");
4806 /// ParseUseListOrder
4807 /// ::= 'uselistorder' Type Value ',' UseListOrderIndexes
4808 bool LLParser::ParseUseListOrder(PerFunctionState *PFS) {
4809 SMLoc Loc = Lex.getLoc();
4810 if (ParseToken(lltok::kw_uselistorder, "expected uselistorder directive"))
4814 SmallVector<unsigned, 16> Indexes;
4815 if (ParseTypeAndValue(V, PFS) ||
4816 ParseToken(lltok::comma, "expected comma in uselistorder directive") ||
4817 ParseUseListOrderIndexes(Indexes))
4820 return sortUseListOrder(V, Indexes, Loc);
4823 /// ParseUseListOrderBB
4824 /// ::= 'uselistorder_bb' @foo ',' %bar ',' UseListOrderIndexes
4825 bool LLParser::ParseUseListOrderBB() {
4826 assert(Lex.getKind() == lltok::kw_uselistorder_bb);
4827 SMLoc Loc = Lex.getLoc();
4831 SmallVector<unsigned, 16> Indexes;
4832 if (ParseValID(Fn) ||
4833 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
4834 ParseValID(Label) ||
4835 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
4836 ParseUseListOrderIndexes(Indexes))
4839 // Check the function.
4841 if (Fn.Kind == ValID::t_GlobalName)
4842 GV = M->getNamedValue(Fn.StrVal);
4843 else if (Fn.Kind == ValID::t_GlobalID)
4844 GV = Fn.UIntVal < NumberedVals.size() ? NumberedVals[Fn.UIntVal] : nullptr;
4846 return Error(Fn.Loc, "expected function name in uselistorder_bb");
4848 return Error(Fn.Loc, "invalid function forward reference in uselistorder_bb");
4849 auto *F = dyn_cast<Function>(GV);
4851 return Error(Fn.Loc, "expected function name in uselistorder_bb");
4852 if (F->isDeclaration())
4853 return Error(Fn.Loc, "invalid declaration in uselistorder_bb");
4855 // Check the basic block.
4856 if (Label.Kind == ValID::t_LocalID)
4857 return Error(Label.Loc, "invalid numeric label in uselistorder_bb");
4858 if (Label.Kind != ValID::t_LocalName)
4859 return Error(Label.Loc, "expected basic block name in uselistorder_bb");
4860 Value *V = F->getValueSymbolTable().lookup(Label.StrVal);
4862 return Error(Label.Loc, "invalid basic block in uselistorder_bb");
4863 if (!isa<BasicBlock>(V))
4864 return Error(Label.Loc, "expected basic block in uselistorder_bb");
4866 return sortUseListOrder(V, Indexes, Loc);