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 *U = cast_or_null<UniquableMDNode>(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;
613 if (ParseUInt32(MetadataID) ||
614 ParseToken(lltok::equal, "expected '=' here"))
617 // Detect common error, from old metadata syntax.
618 if (Lex.getKind() == lltok::Type)
619 return TokError("unexpected type in metadata definition");
621 bool IsDistinct = EatIfPresent(lltok::kw_distinct);
622 if (ParseToken(lltok::exclaim, "Expected '!' here") ||
623 ParseMDNode(Init, IsDistinct))
626 // See if this was forward referenced, if so, handle it.
627 auto FI = ForwardRefMDNodes.find(MetadataID);
628 if (FI != ForwardRefMDNodes.end()) {
629 auto *Temp = FI->second.first;
630 Temp->replaceAllUsesWith(Init);
631 MDNode::deleteTemporary(Temp);
632 ForwardRefMDNodes.erase(FI);
634 assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work");
636 if (MetadataID >= NumberedMetadata.size())
637 NumberedMetadata.resize(MetadataID+1);
639 if (NumberedMetadata[MetadataID] != nullptr)
640 return TokError("Metadata id is already used");
641 NumberedMetadata[MetadataID].reset(Init);
647 static bool isValidVisibilityForLinkage(unsigned V, unsigned L) {
648 return !GlobalValue::isLocalLinkage((GlobalValue::LinkageTypes)L) ||
649 (GlobalValue::VisibilityTypes)V == GlobalValue::DefaultVisibility;
653 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility
654 /// OptionalDLLStorageClass OptionalThreadLocal
655 /// OptionalUnNammedAddr 'alias' Aliasee
660 /// Everything through OptionalUnNammedAddr has already been parsed.
662 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc, unsigned L,
663 unsigned Visibility, unsigned DLLStorageClass,
664 GlobalVariable::ThreadLocalMode TLM,
666 assert(Lex.getKind() == lltok::kw_alias);
669 GlobalValue::LinkageTypes Linkage = (GlobalValue::LinkageTypes) L;
671 if(!GlobalAlias::isValidLinkage(Linkage))
672 return Error(NameLoc, "invalid linkage type for alias");
674 if (!isValidVisibilityForLinkage(Visibility, L))
675 return Error(NameLoc,
676 "symbol with local linkage must have default visibility");
679 LocTy AliaseeLoc = Lex.getLoc();
680 if (Lex.getKind() != lltok::kw_bitcast &&
681 Lex.getKind() != lltok::kw_getelementptr &&
682 Lex.getKind() != lltok::kw_addrspacecast &&
683 Lex.getKind() != lltok::kw_inttoptr) {
684 if (ParseGlobalTypeAndValue(Aliasee))
687 // The bitcast dest type is not present, it is implied by the dest type.
691 if (ID.Kind != ValID::t_Constant)
692 return Error(AliaseeLoc, "invalid aliasee");
693 Aliasee = ID.ConstantVal;
696 Type *AliaseeType = Aliasee->getType();
697 auto *PTy = dyn_cast<PointerType>(AliaseeType);
699 return Error(AliaseeLoc, "An alias must have pointer type");
700 Type *Ty = PTy->getElementType();
701 unsigned AddrSpace = PTy->getAddressSpace();
703 // Okay, create the alias but do not insert it into the module yet.
704 std::unique_ptr<GlobalAlias> GA(
705 GlobalAlias::create(Ty, AddrSpace, (GlobalValue::LinkageTypes)Linkage,
706 Name, Aliasee, /*Parent*/ nullptr));
707 GA->setThreadLocalMode(TLM);
708 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
709 GA->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
710 GA->setUnnamedAddr(UnnamedAddr);
712 // See if this value already exists in the symbol table. If so, it is either
713 // a redefinition or a definition of a forward reference.
714 if (GlobalValue *Val = M->getNamedValue(Name)) {
715 // See if this was a redefinition. If so, there is no entry in
717 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
718 I = ForwardRefVals.find(Name);
719 if (I == ForwardRefVals.end())
720 return Error(NameLoc, "redefinition of global named '@" + Name + "'");
722 // Otherwise, this was a definition of forward ref. Verify that types
724 if (Val->getType() != GA->getType())
725 return Error(NameLoc,
726 "forward reference and definition of alias have different types");
728 // If they agree, just RAUW the old value with the alias and remove the
730 Val->replaceAllUsesWith(GA.get());
731 Val->eraseFromParent();
732 ForwardRefVals.erase(I);
735 // Insert into the module, we know its name won't collide now.
736 M->getAliasList().push_back(GA.get());
737 assert(GA->getName() == Name && "Should not be a name conflict!");
739 // The module owns this now
746 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
747 /// OptionalThreadLocal OptionalUnNammedAddr OptionalAddrSpace
748 /// OptionalExternallyInitialized GlobalType Type Const
749 /// ::= OptionalLinkage OptionalVisibility OptionalDLLStorageClass
750 /// OptionalThreadLocal OptionalUnNammedAddr OptionalAddrSpace
751 /// OptionalExternallyInitialized GlobalType Type Const
753 /// Everything up to and including OptionalUnNammedAddr has been parsed
756 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
757 unsigned Linkage, bool HasLinkage,
758 unsigned Visibility, unsigned DLLStorageClass,
759 GlobalVariable::ThreadLocalMode TLM,
761 if (!isValidVisibilityForLinkage(Visibility, Linkage))
762 return Error(NameLoc,
763 "symbol with local linkage must have default visibility");
766 bool IsConstant, IsExternallyInitialized;
767 LocTy IsExternallyInitializedLoc;
771 if (ParseOptionalAddrSpace(AddrSpace) ||
772 ParseOptionalToken(lltok::kw_externally_initialized,
773 IsExternallyInitialized,
774 &IsExternallyInitializedLoc) ||
775 ParseGlobalType(IsConstant) ||
776 ParseType(Ty, TyLoc))
779 // If the linkage is specified and is external, then no initializer is
781 Constant *Init = nullptr;
782 if (!HasLinkage || (Linkage != GlobalValue::ExternalWeakLinkage &&
783 Linkage != GlobalValue::ExternalLinkage)) {
784 if (ParseGlobalValue(Ty, Init))
788 if (Ty->isFunctionTy() || Ty->isLabelTy())
789 return Error(TyLoc, "invalid type for global variable");
791 GlobalValue *GVal = nullptr;
793 // See if the global was forward referenced, if so, use the global.
795 GVal = M->getNamedValue(Name);
797 if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
798 return Error(NameLoc, "redefinition of global '@" + Name + "'");
801 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
802 I = ForwardRefValIDs.find(NumberedVals.size());
803 if (I != ForwardRefValIDs.end()) {
804 GVal = I->second.first;
805 ForwardRefValIDs.erase(I);
811 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, nullptr,
812 Name, nullptr, GlobalVariable::NotThreadLocal,
815 if (GVal->getType()->getElementType() != Ty)
817 "forward reference and definition of global have different types");
819 GV = cast<GlobalVariable>(GVal);
821 // Move the forward-reference to the correct spot in the module.
822 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
826 NumberedVals.push_back(GV);
828 // Set the parsed properties on the global.
830 GV->setInitializer(Init);
831 GV->setConstant(IsConstant);
832 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
833 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
834 GV->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
835 GV->setExternallyInitialized(IsExternallyInitialized);
836 GV->setThreadLocalMode(TLM);
837 GV->setUnnamedAddr(UnnamedAddr);
839 // Parse attributes on the global.
840 while (Lex.getKind() == lltok::comma) {
843 if (Lex.getKind() == lltok::kw_section) {
845 GV->setSection(Lex.getStrVal());
846 if (ParseToken(lltok::StringConstant, "expected global section string"))
848 } else if (Lex.getKind() == lltok::kw_align) {
850 if (ParseOptionalAlignment(Alignment)) return true;
851 GV->setAlignment(Alignment);
854 if (parseOptionalComdat(Name, C))
859 return TokError("unknown global variable property!");
866 /// ParseUnnamedAttrGrp
867 /// ::= 'attributes' AttrGrpID '=' '{' AttrValPair+ '}'
868 bool LLParser::ParseUnnamedAttrGrp() {
869 assert(Lex.getKind() == lltok::kw_attributes);
870 LocTy AttrGrpLoc = Lex.getLoc();
873 if (Lex.getKind() != lltok::AttrGrpID)
874 return TokError("expected attribute group id");
876 unsigned VarID = Lex.getUIntVal();
877 std::vector<unsigned> unused;
881 if (ParseToken(lltok::equal, "expected '=' here") ||
882 ParseToken(lltok::lbrace, "expected '{' here") ||
883 ParseFnAttributeValuePairs(NumberedAttrBuilders[VarID], unused, true,
885 ParseToken(lltok::rbrace, "expected end of attribute group"))
888 if (!NumberedAttrBuilders[VarID].hasAttributes())
889 return Error(AttrGrpLoc, "attribute group has no attributes");
894 /// ParseFnAttributeValuePairs
895 /// ::= <attr> | <attr> '=' <value>
896 bool LLParser::ParseFnAttributeValuePairs(AttrBuilder &B,
897 std::vector<unsigned> &FwdRefAttrGrps,
898 bool inAttrGrp, LocTy &BuiltinLoc) {
899 bool HaveError = false;
904 lltok::Kind Token = Lex.getKind();
905 if (Token == lltok::kw_builtin)
906 BuiltinLoc = Lex.getLoc();
909 if (!inAttrGrp) return HaveError;
910 return Error(Lex.getLoc(), "unterminated attribute group");
915 case lltok::AttrGrpID: {
916 // Allow a function to reference an attribute group:
918 // define void @foo() #1 { ... }
922 "cannot have an attribute group reference in an attribute group");
924 unsigned AttrGrpNum = Lex.getUIntVal();
925 if (inAttrGrp) break;
927 // Save the reference to the attribute group. We'll fill it in later.
928 FwdRefAttrGrps.push_back(AttrGrpNum);
931 // Target-dependent attributes:
932 case lltok::StringConstant: {
933 std::string Attr = Lex.getStrVal();
936 if (EatIfPresent(lltok::equal) &&
937 ParseStringConstant(Val))
940 B.addAttribute(Attr, Val);
944 // Target-independent attributes:
945 case lltok::kw_align: {
946 // As a hack, we allow function alignment to be initially parsed as an
947 // attribute on a function declaration/definition or added to an attribute
948 // group and later moved to the alignment field.
952 if (ParseToken(lltok::equal, "expected '=' here") ||
953 ParseUInt32(Alignment))
956 if (ParseOptionalAlignment(Alignment))
959 B.addAlignmentAttr(Alignment);
962 case lltok::kw_alignstack: {
966 if (ParseToken(lltok::equal, "expected '=' here") ||
967 ParseUInt32(Alignment))
970 if (ParseOptionalStackAlignment(Alignment))
973 B.addStackAlignmentAttr(Alignment);
976 case lltok::kw_alwaysinline: B.addAttribute(Attribute::AlwaysInline); break;
977 case lltok::kw_builtin: B.addAttribute(Attribute::Builtin); break;
978 case lltok::kw_cold: B.addAttribute(Attribute::Cold); break;
979 case lltok::kw_inlinehint: B.addAttribute(Attribute::InlineHint); break;
980 case lltok::kw_jumptable: B.addAttribute(Attribute::JumpTable); break;
981 case lltok::kw_minsize: B.addAttribute(Attribute::MinSize); break;
982 case lltok::kw_naked: B.addAttribute(Attribute::Naked); break;
983 case lltok::kw_nobuiltin: B.addAttribute(Attribute::NoBuiltin); break;
984 case lltok::kw_noduplicate: B.addAttribute(Attribute::NoDuplicate); break;
985 case lltok::kw_noimplicitfloat: B.addAttribute(Attribute::NoImplicitFloat); break;
986 case lltok::kw_noinline: B.addAttribute(Attribute::NoInline); break;
987 case lltok::kw_nonlazybind: B.addAttribute(Attribute::NonLazyBind); break;
988 case lltok::kw_noredzone: B.addAttribute(Attribute::NoRedZone); break;
989 case lltok::kw_noreturn: B.addAttribute(Attribute::NoReturn); break;
990 case lltok::kw_nounwind: B.addAttribute(Attribute::NoUnwind); break;
991 case lltok::kw_optnone: B.addAttribute(Attribute::OptimizeNone); break;
992 case lltok::kw_optsize: B.addAttribute(Attribute::OptimizeForSize); break;
993 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
994 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
995 case lltok::kw_returns_twice: B.addAttribute(Attribute::ReturnsTwice); break;
996 case lltok::kw_ssp: B.addAttribute(Attribute::StackProtect); break;
997 case lltok::kw_sspreq: B.addAttribute(Attribute::StackProtectReq); break;
998 case lltok::kw_sspstrong: B.addAttribute(Attribute::StackProtectStrong); break;
999 case lltok::kw_sanitize_address: B.addAttribute(Attribute::SanitizeAddress); break;
1000 case lltok::kw_sanitize_thread: B.addAttribute(Attribute::SanitizeThread); break;
1001 case lltok::kw_sanitize_memory: B.addAttribute(Attribute::SanitizeMemory); break;
1002 case lltok::kw_uwtable: B.addAttribute(Attribute::UWTable); break;
1005 case lltok::kw_inreg:
1006 case lltok::kw_signext:
1007 case lltok::kw_zeroext:
1010 "invalid use of attribute on a function");
1012 case lltok::kw_byval:
1013 case lltok::kw_dereferenceable:
1014 case lltok::kw_inalloca:
1015 case lltok::kw_nest:
1016 case lltok::kw_noalias:
1017 case lltok::kw_nocapture:
1018 case lltok::kw_nonnull:
1019 case lltok::kw_returned:
1020 case lltok::kw_sret:
1023 "invalid use of parameter-only attribute on a function");
1031 //===----------------------------------------------------------------------===//
1032 // GlobalValue Reference/Resolution Routines.
1033 //===----------------------------------------------------------------------===//
1035 /// GetGlobalVal - Get a value with the specified name or ID, creating a
1036 /// forward reference record if needed. This can return null if the value
1037 /// exists but does not have the right type.
1038 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
1040 PointerType *PTy = dyn_cast<PointerType>(Ty);
1042 Error(Loc, "global variable reference must have pointer type");
1046 // Look this name up in the normal function symbol table.
1048 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
1050 // If this is a forward reference for the value, see if we already created a
1051 // forward ref record.
1053 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
1054 I = ForwardRefVals.find(Name);
1055 if (I != ForwardRefVals.end())
1056 Val = I->second.first;
1059 // If we have the value in the symbol table or fwd-ref table, return it.
1061 if (Val->getType() == Ty) return Val;
1062 Error(Loc, "'@" + Name + "' defined with type '" +
1063 getTypeString(Val->getType()) + "'");
1067 // Otherwise, create a new forward reference for this value and remember it.
1068 GlobalValue *FwdVal;
1069 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1070 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
1072 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1073 GlobalValue::ExternalWeakLinkage, nullptr, Name,
1074 nullptr, GlobalVariable::NotThreadLocal,
1075 PTy->getAddressSpace());
1077 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1081 GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
1082 PointerType *PTy = dyn_cast<PointerType>(Ty);
1084 Error(Loc, "global variable reference must have pointer type");
1088 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
1090 // If this is a forward reference for the value, see if we already created a
1091 // forward ref record.
1093 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
1094 I = ForwardRefValIDs.find(ID);
1095 if (I != ForwardRefValIDs.end())
1096 Val = I->second.first;
1099 // If we have the value in the symbol table or fwd-ref table, return it.
1101 if (Val->getType() == Ty) return Val;
1102 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
1103 getTypeString(Val->getType()) + "'");
1107 // Otherwise, create a new forward reference for this value and remember it.
1108 GlobalValue *FwdVal;
1109 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1110 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
1112 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1113 GlobalValue::ExternalWeakLinkage, nullptr, "");
1115 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1120 //===----------------------------------------------------------------------===//
1121 // Comdat Reference/Resolution Routines.
1122 //===----------------------------------------------------------------------===//
1124 Comdat *LLParser::getComdat(const std::string &Name, LocTy Loc) {
1125 // Look this name up in the comdat symbol table.
1126 Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
1127 Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
1128 if (I != ComdatSymTab.end())
1131 // Otherwise, create a new forward reference for this value and remember it.
1132 Comdat *C = M->getOrInsertComdat(Name);
1133 ForwardRefComdats[Name] = Loc;
1138 //===----------------------------------------------------------------------===//
1140 //===----------------------------------------------------------------------===//
1142 /// ParseToken - If the current token has the specified kind, eat it and return
1143 /// success. Otherwise, emit the specified error and return failure.
1144 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
1145 if (Lex.getKind() != T)
1146 return TokError(ErrMsg);
1151 /// ParseStringConstant
1152 /// ::= StringConstant
1153 bool LLParser::ParseStringConstant(std::string &Result) {
1154 if (Lex.getKind() != lltok::StringConstant)
1155 return TokError("expected string constant");
1156 Result = Lex.getStrVal();
1163 bool LLParser::ParseUInt32(unsigned &Val) {
1164 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1165 return TokError("expected integer");
1166 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
1167 if (Val64 != unsigned(Val64))
1168 return TokError("expected 32-bit integer (too large)");
1176 bool LLParser::ParseUInt64(uint64_t &Val) {
1177 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1178 return TokError("expected integer");
1179 Val = Lex.getAPSIntVal().getLimitedValue();
1185 /// := 'localdynamic'
1186 /// := 'initialexec'
1188 bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
1189 switch (Lex.getKind()) {
1191 return TokError("expected localdynamic, initialexec or localexec");
1192 case lltok::kw_localdynamic:
1193 TLM = GlobalVariable::LocalDynamicTLSModel;
1195 case lltok::kw_initialexec:
1196 TLM = GlobalVariable::InitialExecTLSModel;
1198 case lltok::kw_localexec:
1199 TLM = GlobalVariable::LocalExecTLSModel;
1207 /// ParseOptionalThreadLocal
1209 /// := 'thread_local'
1210 /// := 'thread_local' '(' tlsmodel ')'
1211 bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
1212 TLM = GlobalVariable::NotThreadLocal;
1213 if (!EatIfPresent(lltok::kw_thread_local))
1216 TLM = GlobalVariable::GeneralDynamicTLSModel;
1217 if (Lex.getKind() == lltok::lparen) {
1219 return ParseTLSModel(TLM) ||
1220 ParseToken(lltok::rparen, "expected ')' after thread local model");
1225 /// ParseOptionalAddrSpace
1227 /// := 'addrspace' '(' uint32 ')'
1228 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
1230 if (!EatIfPresent(lltok::kw_addrspace))
1232 return ParseToken(lltok::lparen, "expected '(' in address space") ||
1233 ParseUInt32(AddrSpace) ||
1234 ParseToken(lltok::rparen, "expected ')' in address space");
1237 /// ParseOptionalParamAttrs - Parse a potentially empty list of parameter attributes.
1238 bool LLParser::ParseOptionalParamAttrs(AttrBuilder &B) {
1239 bool HaveError = false;
1244 lltok::Kind Token = Lex.getKind();
1246 default: // End of attributes.
1248 case lltok::kw_align: {
1250 if (ParseOptionalAlignment(Alignment))
1252 B.addAlignmentAttr(Alignment);
1255 case lltok::kw_byval: B.addAttribute(Attribute::ByVal); break;
1256 case lltok::kw_dereferenceable: {
1258 if (ParseOptionalDereferenceableBytes(Bytes))
1260 B.addDereferenceableAttr(Bytes);
1263 case lltok::kw_inalloca: B.addAttribute(Attribute::InAlloca); break;
1264 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1265 case lltok::kw_nest: B.addAttribute(Attribute::Nest); break;
1266 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1267 case lltok::kw_nocapture: B.addAttribute(Attribute::NoCapture); break;
1268 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1269 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1270 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1271 case lltok::kw_returned: B.addAttribute(Attribute::Returned); break;
1272 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1273 case lltok::kw_sret: B.addAttribute(Attribute::StructRet); break;
1274 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1276 case lltok::kw_alignstack:
1277 case lltok::kw_alwaysinline:
1278 case lltok::kw_builtin:
1279 case lltok::kw_inlinehint:
1280 case lltok::kw_jumptable:
1281 case lltok::kw_minsize:
1282 case lltok::kw_naked:
1283 case lltok::kw_nobuiltin:
1284 case lltok::kw_noduplicate:
1285 case lltok::kw_noimplicitfloat:
1286 case lltok::kw_noinline:
1287 case lltok::kw_nonlazybind:
1288 case lltok::kw_noredzone:
1289 case lltok::kw_noreturn:
1290 case lltok::kw_nounwind:
1291 case lltok::kw_optnone:
1292 case lltok::kw_optsize:
1293 case lltok::kw_returns_twice:
1294 case lltok::kw_sanitize_address:
1295 case lltok::kw_sanitize_memory:
1296 case lltok::kw_sanitize_thread:
1298 case lltok::kw_sspreq:
1299 case lltok::kw_sspstrong:
1300 case lltok::kw_uwtable:
1301 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1309 /// ParseOptionalReturnAttrs - Parse a potentially empty list of return attributes.
1310 bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
1311 bool HaveError = false;
1316 lltok::Kind Token = Lex.getKind();
1318 default: // End of attributes.
1320 case lltok::kw_dereferenceable: {
1322 if (ParseOptionalDereferenceableBytes(Bytes))
1324 B.addDereferenceableAttr(Bytes);
1327 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1328 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1329 case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1330 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1331 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1334 case lltok::kw_align:
1335 case lltok::kw_byval:
1336 case lltok::kw_inalloca:
1337 case lltok::kw_nest:
1338 case lltok::kw_nocapture:
1339 case lltok::kw_returned:
1340 case lltok::kw_sret:
1341 HaveError |= Error(Lex.getLoc(), "invalid use of parameter-only attribute");
1344 case lltok::kw_alignstack:
1345 case lltok::kw_alwaysinline:
1346 case lltok::kw_builtin:
1347 case lltok::kw_cold:
1348 case lltok::kw_inlinehint:
1349 case lltok::kw_jumptable:
1350 case lltok::kw_minsize:
1351 case lltok::kw_naked:
1352 case lltok::kw_nobuiltin:
1353 case lltok::kw_noduplicate:
1354 case lltok::kw_noimplicitfloat:
1355 case lltok::kw_noinline:
1356 case lltok::kw_nonlazybind:
1357 case lltok::kw_noredzone:
1358 case lltok::kw_noreturn:
1359 case lltok::kw_nounwind:
1360 case lltok::kw_optnone:
1361 case lltok::kw_optsize:
1362 case lltok::kw_returns_twice:
1363 case lltok::kw_sanitize_address:
1364 case lltok::kw_sanitize_memory:
1365 case lltok::kw_sanitize_thread:
1367 case lltok::kw_sspreq:
1368 case lltok::kw_sspstrong:
1369 case lltok::kw_uwtable:
1370 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1373 case lltok::kw_readnone:
1374 case lltok::kw_readonly:
1375 HaveError |= Error(Lex.getLoc(), "invalid use of attribute on return type");
1382 /// ParseOptionalLinkage
1389 /// ::= 'linkonce_odr'
1390 /// ::= 'available_externally'
1393 /// ::= 'extern_weak'
1395 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1397 switch (Lex.getKind()) {
1398 default: Res=GlobalValue::ExternalLinkage; return false;
1399 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1400 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1401 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1402 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1403 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1404 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1405 case lltok::kw_available_externally:
1406 Res = GlobalValue::AvailableExternallyLinkage;
1408 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1409 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1410 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1411 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1418 /// ParseOptionalVisibility
1424 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1425 switch (Lex.getKind()) {
1426 default: Res = GlobalValue::DefaultVisibility; return false;
1427 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1428 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1429 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1435 /// ParseOptionalDLLStorageClass
1440 bool LLParser::ParseOptionalDLLStorageClass(unsigned &Res) {
1441 switch (Lex.getKind()) {
1442 default: Res = GlobalValue::DefaultStorageClass; return false;
1443 case lltok::kw_dllimport: Res = GlobalValue::DLLImportStorageClass; break;
1444 case lltok::kw_dllexport: Res = GlobalValue::DLLExportStorageClass; break;
1450 /// ParseOptionalCallingConv
1454 /// ::= 'intel_ocl_bicc'
1456 /// ::= 'x86_stdcallcc'
1457 /// ::= 'x86_fastcallcc'
1458 /// ::= 'x86_thiscallcc'
1459 /// ::= 'x86_vectorcallcc'
1460 /// ::= 'arm_apcscc'
1461 /// ::= 'arm_aapcscc'
1462 /// ::= 'arm_aapcs_vfpcc'
1463 /// ::= 'msp430_intrcc'
1464 /// ::= 'ptx_kernel'
1465 /// ::= 'ptx_device'
1467 /// ::= 'spir_kernel'
1468 /// ::= 'x86_64_sysvcc'
1469 /// ::= 'x86_64_win64cc'
1470 /// ::= 'webkit_jscc'
1472 /// ::= 'preserve_mostcc'
1473 /// ::= 'preserve_allcc'
1477 bool LLParser::ParseOptionalCallingConv(unsigned &CC) {
1478 switch (Lex.getKind()) {
1479 default: CC = CallingConv::C; return false;
1480 case lltok::kw_ccc: CC = CallingConv::C; break;
1481 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1482 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1483 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1484 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1485 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1486 case lltok::kw_x86_vectorcallcc:CC = CallingConv::X86_VectorCall; break;
1487 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1488 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1489 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1490 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1491 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1492 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1493 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1494 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1495 case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1496 case lltok::kw_x86_64_sysvcc: CC = CallingConv::X86_64_SysV; break;
1497 case lltok::kw_x86_64_win64cc: CC = CallingConv::X86_64_Win64; break;
1498 case lltok::kw_webkit_jscc: CC = CallingConv::WebKit_JS; break;
1499 case lltok::kw_anyregcc: CC = CallingConv::AnyReg; break;
1500 case lltok::kw_preserve_mostcc:CC = CallingConv::PreserveMost; break;
1501 case lltok::kw_preserve_allcc: CC = CallingConv::PreserveAll; break;
1502 case lltok::kw_ghccc: CC = CallingConv::GHC; break;
1503 case lltok::kw_cc: {
1505 return ParseUInt32(CC);
1513 /// ParseInstructionMetadata
1514 /// ::= !dbg !42 (',' !dbg !57)*
1515 bool LLParser::ParseInstructionMetadata(Instruction *Inst,
1516 PerFunctionState *PFS) {
1518 if (Lex.getKind() != lltok::MetadataVar)
1519 return TokError("expected metadata after comma");
1521 std::string Name = Lex.getStrVal();
1522 unsigned MDK = M->getMDKindID(Name);
1526 SMLoc Loc = Lex.getLoc();
1528 if (ParseToken(lltok::exclaim, "expected '!' here"))
1531 // This code is similar to that of ParseMetadata, however it needs to
1532 // have special-case code for a forward reference; see the comments on
1533 // ForwardRefInstMetadata for details. Also, MDStrings are not supported
1534 // at the top level here.
1535 if (Lex.getKind() == lltok::lbrace) {
1539 Inst->setMetadata(MDK, N);
1541 unsigned NodeID = 0;
1542 if (ParseMDNodeID(Node, NodeID))
1545 // If we got the node, add it to the instruction.
1546 Inst->setMetadata(MDK, Node);
1548 MDRef R = { Loc, MDK, NodeID };
1549 // Otherwise, remember that this should be resolved later.
1550 ForwardRefInstMetadata[Inst].push_back(R);
1554 if (MDK == LLVMContext::MD_tbaa)
1555 InstsWithTBAATag.push_back(Inst);
1557 // If this is the end of the list, we're done.
1558 } while (EatIfPresent(lltok::comma));
1562 /// ParseOptionalAlignment
1565 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1567 if (!EatIfPresent(lltok::kw_align))
1569 LocTy AlignLoc = Lex.getLoc();
1570 if (ParseUInt32(Alignment)) return true;
1571 if (!isPowerOf2_32(Alignment))
1572 return Error(AlignLoc, "alignment is not a power of two");
1573 if (Alignment > Value::MaximumAlignment)
1574 return Error(AlignLoc, "huge alignments are not supported yet");
1578 /// ParseOptionalDereferenceableBytes
1580 /// ::= 'dereferenceable' '(' 4 ')'
1581 bool LLParser::ParseOptionalDereferenceableBytes(uint64_t &Bytes) {
1583 if (!EatIfPresent(lltok::kw_dereferenceable))
1585 LocTy ParenLoc = Lex.getLoc();
1586 if (!EatIfPresent(lltok::lparen))
1587 return Error(ParenLoc, "expected '('");
1588 LocTy DerefLoc = Lex.getLoc();
1589 if (ParseUInt64(Bytes)) return true;
1590 ParenLoc = Lex.getLoc();
1591 if (!EatIfPresent(lltok::rparen))
1592 return Error(ParenLoc, "expected ')'");
1594 return Error(DerefLoc, "dereferenceable bytes must be non-zero");
1598 /// ParseOptionalCommaAlign
1602 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1604 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1605 bool &AteExtraComma) {
1606 AteExtraComma = false;
1607 while (EatIfPresent(lltok::comma)) {
1608 // Metadata at the end is an early exit.
1609 if (Lex.getKind() == lltok::MetadataVar) {
1610 AteExtraComma = true;
1614 if (Lex.getKind() != lltok::kw_align)
1615 return Error(Lex.getLoc(), "expected metadata or 'align'");
1617 if (ParseOptionalAlignment(Alignment)) return true;
1623 /// ParseScopeAndOrdering
1624 /// if isAtomic: ::= 'singlethread'? AtomicOrdering
1627 /// This sets Scope and Ordering to the parsed values.
1628 bool LLParser::ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope,
1629 AtomicOrdering &Ordering) {
1633 Scope = CrossThread;
1634 if (EatIfPresent(lltok::kw_singlethread))
1635 Scope = SingleThread;
1637 return ParseOrdering(Ordering);
1641 /// ::= AtomicOrdering
1643 /// This sets Ordering to the parsed value.
1644 bool LLParser::ParseOrdering(AtomicOrdering &Ordering) {
1645 switch (Lex.getKind()) {
1646 default: return TokError("Expected ordering on atomic instruction");
1647 case lltok::kw_unordered: Ordering = Unordered; break;
1648 case lltok::kw_monotonic: Ordering = Monotonic; break;
1649 case lltok::kw_acquire: Ordering = Acquire; break;
1650 case lltok::kw_release: Ordering = Release; break;
1651 case lltok::kw_acq_rel: Ordering = AcquireRelease; break;
1652 case lltok::kw_seq_cst: Ordering = SequentiallyConsistent; break;
1658 /// ParseOptionalStackAlignment
1660 /// ::= 'alignstack' '(' 4 ')'
1661 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1663 if (!EatIfPresent(lltok::kw_alignstack))
1665 LocTy ParenLoc = Lex.getLoc();
1666 if (!EatIfPresent(lltok::lparen))
1667 return Error(ParenLoc, "expected '('");
1668 LocTy AlignLoc = Lex.getLoc();
1669 if (ParseUInt32(Alignment)) return true;
1670 ParenLoc = Lex.getLoc();
1671 if (!EatIfPresent(lltok::rparen))
1672 return Error(ParenLoc, "expected ')'");
1673 if (!isPowerOf2_32(Alignment))
1674 return Error(AlignLoc, "stack alignment is not a power of two");
1678 /// ParseIndexList - This parses the index list for an insert/extractvalue
1679 /// instruction. This sets AteExtraComma in the case where we eat an extra
1680 /// comma at the end of the line and find that it is followed by metadata.
1681 /// Clients that don't allow metadata can call the version of this function that
1682 /// only takes one argument.
1685 /// ::= (',' uint32)+
1687 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1688 bool &AteExtraComma) {
1689 AteExtraComma = false;
1691 if (Lex.getKind() != lltok::comma)
1692 return TokError("expected ',' as start of index list");
1694 while (EatIfPresent(lltok::comma)) {
1695 if (Lex.getKind() == lltok::MetadataVar) {
1696 AteExtraComma = true;
1700 if (ParseUInt32(Idx)) return true;
1701 Indices.push_back(Idx);
1707 //===----------------------------------------------------------------------===//
1709 //===----------------------------------------------------------------------===//
1711 /// ParseType - Parse a type.
1712 bool LLParser::ParseType(Type *&Result, const Twine &Msg, bool AllowVoid) {
1713 SMLoc TypeLoc = Lex.getLoc();
1714 switch (Lex.getKind()) {
1716 return TokError(Msg);
1718 // Type ::= 'float' | 'void' (etc)
1719 Result = Lex.getTyVal();
1723 // Type ::= StructType
1724 if (ParseAnonStructType(Result, false))
1727 case lltok::lsquare:
1728 // Type ::= '[' ... ']'
1729 Lex.Lex(); // eat the lsquare.
1730 if (ParseArrayVectorType(Result, false))
1733 case lltok::less: // Either vector or packed struct.
1734 // Type ::= '<' ... '>'
1736 if (Lex.getKind() == lltok::lbrace) {
1737 if (ParseAnonStructType(Result, true) ||
1738 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1740 } else if (ParseArrayVectorType(Result, true))
1743 case lltok::LocalVar: {
1745 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
1747 // If the type hasn't been defined yet, create a forward definition and
1748 // remember where that forward def'n was seen (in case it never is defined).
1750 Entry.first = StructType::create(Context, Lex.getStrVal());
1751 Entry.second = Lex.getLoc();
1753 Result = Entry.first;
1758 case lltok::LocalVarID: {
1760 if (Lex.getUIntVal() >= NumberedTypes.size())
1761 NumberedTypes.resize(Lex.getUIntVal()+1);
1762 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
1764 // If the type hasn't been defined yet, create a forward definition and
1765 // remember where that forward def'n was seen (in case it never is defined).
1767 Entry.first = StructType::create(Context);
1768 Entry.second = Lex.getLoc();
1770 Result = Entry.first;
1776 // Parse the type suffixes.
1778 switch (Lex.getKind()) {
1781 if (!AllowVoid && Result->isVoidTy())
1782 return Error(TypeLoc, "void type only allowed for function results");
1785 // Type ::= Type '*'
1787 if (Result->isLabelTy())
1788 return TokError("basic block pointers are invalid");
1789 if (Result->isVoidTy())
1790 return TokError("pointers to void are invalid - use i8* instead");
1791 if (!PointerType::isValidElementType(Result))
1792 return TokError("pointer to this type is invalid");
1793 Result = PointerType::getUnqual(Result);
1797 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
1798 case lltok::kw_addrspace: {
1799 if (Result->isLabelTy())
1800 return TokError("basic block pointers are invalid");
1801 if (Result->isVoidTy())
1802 return TokError("pointers to void are invalid; use i8* instead");
1803 if (!PointerType::isValidElementType(Result))
1804 return TokError("pointer to this type is invalid");
1806 if (ParseOptionalAddrSpace(AddrSpace) ||
1807 ParseToken(lltok::star, "expected '*' in address space"))
1810 Result = PointerType::get(Result, AddrSpace);
1814 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1816 if (ParseFunctionType(Result))
1823 /// ParseParameterList
1825 /// ::= '(' Arg (',' Arg)* ')'
1827 /// ::= Type OptionalAttributes Value OptionalAttributes
1828 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1829 PerFunctionState &PFS, bool IsMustTailCall,
1830 bool InVarArgsFunc) {
1831 if (ParseToken(lltok::lparen, "expected '(' in call"))
1834 unsigned AttrIndex = 1;
1835 while (Lex.getKind() != lltok::rparen) {
1836 // If this isn't the first argument, we need a comma.
1837 if (!ArgList.empty() &&
1838 ParseToken(lltok::comma, "expected ',' in argument list"))
1841 // Parse an ellipsis if this is a musttail call in a variadic function.
1842 if (Lex.getKind() == lltok::dotdotdot) {
1843 const char *Msg = "unexpected ellipsis in argument list for ";
1844 if (!IsMustTailCall)
1845 return TokError(Twine(Msg) + "non-musttail call");
1847 return TokError(Twine(Msg) + "musttail call in non-varargs function");
1848 Lex.Lex(); // Lex the '...', it is purely for readability.
1849 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1852 // Parse the argument.
1854 Type *ArgTy = nullptr;
1855 AttrBuilder ArgAttrs;
1857 if (ParseType(ArgTy, ArgLoc))
1860 if (ArgTy->isMetadataTy()) {
1861 if (ParseMetadataAsValue(V, PFS))
1864 // Otherwise, handle normal operands.
1865 if (ParseOptionalParamAttrs(ArgAttrs) || ParseValue(ArgTy, V, PFS))
1868 ArgList.push_back(ParamInfo(ArgLoc, V, AttributeSet::get(V->getContext(),
1873 if (IsMustTailCall && InVarArgsFunc)
1874 return TokError("expected '...' at end of argument list for musttail call "
1875 "in varargs function");
1877 Lex.Lex(); // Lex the ')'.
1883 /// ParseArgumentList - Parse the argument list for a function type or function
1885 /// ::= '(' ArgTypeListI ')'
1889 /// ::= ArgTypeList ',' '...'
1890 /// ::= ArgType (',' ArgType)*
1892 bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
1895 assert(Lex.getKind() == lltok::lparen);
1896 Lex.Lex(); // eat the (.
1898 if (Lex.getKind() == lltok::rparen) {
1900 } else if (Lex.getKind() == lltok::dotdotdot) {
1904 LocTy TypeLoc = Lex.getLoc();
1905 Type *ArgTy = nullptr;
1909 if (ParseType(ArgTy) ||
1910 ParseOptionalParamAttrs(Attrs)) return true;
1912 if (ArgTy->isVoidTy())
1913 return Error(TypeLoc, "argument can not have void type");
1915 if (Lex.getKind() == lltok::LocalVar) {
1916 Name = Lex.getStrVal();
1920 if (!FunctionType::isValidArgumentType(ArgTy))
1921 return Error(TypeLoc, "invalid type for function argument");
1923 unsigned AttrIndex = 1;
1924 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1925 AttributeSet::get(ArgTy->getContext(),
1926 AttrIndex++, Attrs), Name));
1928 while (EatIfPresent(lltok::comma)) {
1929 // Handle ... at end of arg list.
1930 if (EatIfPresent(lltok::dotdotdot)) {
1935 // Otherwise must be an argument type.
1936 TypeLoc = Lex.getLoc();
1937 if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
1939 if (ArgTy->isVoidTy())
1940 return Error(TypeLoc, "argument can not have void type");
1942 if (Lex.getKind() == lltok::LocalVar) {
1943 Name = Lex.getStrVal();
1949 if (!ArgTy->isFirstClassType())
1950 return Error(TypeLoc, "invalid type for function argument");
1952 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1953 AttributeSet::get(ArgTy->getContext(),
1954 AttrIndex++, Attrs),
1959 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1962 /// ParseFunctionType
1963 /// ::= Type ArgumentList OptionalAttrs
1964 bool LLParser::ParseFunctionType(Type *&Result) {
1965 assert(Lex.getKind() == lltok::lparen);
1967 if (!FunctionType::isValidReturnType(Result))
1968 return TokError("invalid function return type");
1970 SmallVector<ArgInfo, 8> ArgList;
1972 if (ParseArgumentList(ArgList, isVarArg))
1975 // Reject names on the arguments lists.
1976 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1977 if (!ArgList[i].Name.empty())
1978 return Error(ArgList[i].Loc, "argument name invalid in function type");
1979 if (ArgList[i].Attrs.hasAttributes(i + 1))
1980 return Error(ArgList[i].Loc,
1981 "argument attributes invalid in function type");
1984 SmallVector<Type*, 16> ArgListTy;
1985 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1986 ArgListTy.push_back(ArgList[i].Ty);
1988 Result = FunctionType::get(Result, ArgListTy, isVarArg);
1992 /// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
1994 bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
1995 SmallVector<Type*, 8> Elts;
1996 if (ParseStructBody(Elts)) return true;
1998 Result = StructType::get(Context, Elts, Packed);
2002 /// ParseStructDefinition - Parse a struct in a 'type' definition.
2003 bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
2004 std::pair<Type*, LocTy> &Entry,
2006 // If the type was already defined, diagnose the redefinition.
2007 if (Entry.first && !Entry.second.isValid())
2008 return Error(TypeLoc, "redefinition of type");
2010 // If we have opaque, just return without filling in the definition for the
2011 // struct. This counts as a definition as far as the .ll file goes.
2012 if (EatIfPresent(lltok::kw_opaque)) {
2013 // This type is being defined, so clear the location to indicate this.
2014 Entry.second = SMLoc();
2016 // If this type number has never been uttered, create it.
2018 Entry.first = StructType::create(Context, Name);
2019 ResultTy = Entry.first;
2023 // If the type starts with '<', then it is either a packed struct or a vector.
2024 bool isPacked = EatIfPresent(lltok::less);
2026 // If we don't have a struct, then we have a random type alias, which we
2027 // accept for compatibility with old files. These types are not allowed to be
2028 // forward referenced and not allowed to be recursive.
2029 if (Lex.getKind() != lltok::lbrace) {
2031 return Error(TypeLoc, "forward references to non-struct type");
2035 return ParseArrayVectorType(ResultTy, true);
2036 return ParseType(ResultTy);
2039 // This type is being defined, so clear the location to indicate this.
2040 Entry.second = SMLoc();
2042 // If this type number has never been uttered, create it.
2044 Entry.first = StructType::create(Context, Name);
2046 StructType *STy = cast<StructType>(Entry.first);
2048 SmallVector<Type*, 8> Body;
2049 if (ParseStructBody(Body) ||
2050 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
2053 STy->setBody(Body, isPacked);
2059 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
2062 /// ::= '{' Type (',' Type)* '}'
2063 /// ::= '<' '{' '}' '>'
2064 /// ::= '<' '{' Type (',' Type)* '}' '>'
2065 bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
2066 assert(Lex.getKind() == lltok::lbrace);
2067 Lex.Lex(); // Consume the '{'
2069 // Handle the empty struct.
2070 if (EatIfPresent(lltok::rbrace))
2073 LocTy EltTyLoc = Lex.getLoc();
2075 if (ParseType(Ty)) return true;
2078 if (!StructType::isValidElementType(Ty))
2079 return Error(EltTyLoc, "invalid element type for struct");
2081 while (EatIfPresent(lltok::comma)) {
2082 EltTyLoc = Lex.getLoc();
2083 if (ParseType(Ty)) return true;
2085 if (!StructType::isValidElementType(Ty))
2086 return Error(EltTyLoc, "invalid element type for struct");
2091 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
2094 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
2095 /// token has already been consumed.
2097 /// ::= '[' APSINTVAL 'x' Types ']'
2098 /// ::= '<' APSINTVAL 'x' Types '>'
2099 bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
2100 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
2101 Lex.getAPSIntVal().getBitWidth() > 64)
2102 return TokError("expected number in address space");
2104 LocTy SizeLoc = Lex.getLoc();
2105 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
2108 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
2111 LocTy TypeLoc = Lex.getLoc();
2112 Type *EltTy = nullptr;
2113 if (ParseType(EltTy)) return true;
2115 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
2116 "expected end of sequential type"))
2121 return Error(SizeLoc, "zero element vector is illegal");
2122 if ((unsigned)Size != Size)
2123 return Error(SizeLoc, "size too large for vector");
2124 if (!VectorType::isValidElementType(EltTy))
2125 return Error(TypeLoc, "invalid vector element type");
2126 Result = VectorType::get(EltTy, unsigned(Size));
2128 if (!ArrayType::isValidElementType(EltTy))
2129 return Error(TypeLoc, "invalid array element type");
2130 Result = ArrayType::get(EltTy, Size);
2135 //===----------------------------------------------------------------------===//
2136 // Function Semantic Analysis.
2137 //===----------------------------------------------------------------------===//
2139 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
2141 : P(p), F(f), FunctionNumber(functionNumber) {
2143 // Insert unnamed arguments into the NumberedVals list.
2144 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
2147 NumberedVals.push_back(AI);
2150 LLParser::PerFunctionState::~PerFunctionState() {
2151 // If there were any forward referenced non-basicblock values, delete them.
2152 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
2153 I = ForwardRefVals.begin(), E = ForwardRefVals.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;
2161 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2162 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
2163 if (!isa<BasicBlock>(I->second.first)) {
2164 I->second.first->replaceAllUsesWith(
2165 UndefValue::get(I->second.first->getType()));
2166 delete I->second.first;
2167 I->second.first = nullptr;
2171 bool LLParser::PerFunctionState::FinishFunction() {
2172 if (!ForwardRefVals.empty())
2173 return P.Error(ForwardRefVals.begin()->second.second,
2174 "use of undefined value '%" + ForwardRefVals.begin()->first +
2176 if (!ForwardRefValIDs.empty())
2177 return P.Error(ForwardRefValIDs.begin()->second.second,
2178 "use of undefined value '%" +
2179 Twine(ForwardRefValIDs.begin()->first) + "'");
2184 /// GetVal - Get a value with the specified name or ID, creating a
2185 /// forward reference record if needed. This can return null if the value
2186 /// exists but does not have the right type.
2187 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
2188 Type *Ty, LocTy Loc) {
2189 // Look this name up in the normal function symbol table.
2190 Value *Val = F.getValueSymbolTable().lookup(Name);
2192 // If this is a forward reference for the value, see if we already created a
2193 // forward ref record.
2195 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2196 I = ForwardRefVals.find(Name);
2197 if (I != ForwardRefVals.end())
2198 Val = I->second.first;
2201 // If we have the value in the symbol table or fwd-ref table, return it.
2203 if (Val->getType() == Ty) return Val;
2204 if (Ty->isLabelTy())
2205 P.Error(Loc, "'%" + Name + "' is not a basic block");
2207 P.Error(Loc, "'%" + Name + "' defined with type '" +
2208 getTypeString(Val->getType()) + "'");
2212 // Don't make placeholders with invalid type.
2213 if (!Ty->isFirstClassType()) {
2214 P.Error(Loc, "invalid use of a non-first-class type");
2218 // Otherwise, create a new forward reference for this value and remember it.
2220 if (Ty->isLabelTy())
2221 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2223 FwdVal = new Argument(Ty, Name);
2225 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2229 Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty,
2231 // Look this name up in the normal function symbol table.
2232 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
2234 // If this is a forward reference for the value, see if we already created a
2235 // forward ref record.
2237 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2238 I = ForwardRefValIDs.find(ID);
2239 if (I != ForwardRefValIDs.end())
2240 Val = I->second.first;
2243 // If we have the value in the symbol table or fwd-ref table, return it.
2245 if (Val->getType() == Ty) return Val;
2246 if (Ty->isLabelTy())
2247 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
2249 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
2250 getTypeString(Val->getType()) + "'");
2254 if (!Ty->isFirstClassType()) {
2255 P.Error(Loc, "invalid use of a non-first-class type");
2259 // Otherwise, create a new forward reference for this value and remember it.
2261 if (Ty->isLabelTy())
2262 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2264 FwdVal = new Argument(Ty);
2266 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2270 /// SetInstName - After an instruction is parsed and inserted into its
2271 /// basic block, this installs its name.
2272 bool LLParser::PerFunctionState::SetInstName(int NameID,
2273 const std::string &NameStr,
2274 LocTy NameLoc, Instruction *Inst) {
2275 // If this instruction has void type, it cannot have a name or ID specified.
2276 if (Inst->getType()->isVoidTy()) {
2277 if (NameID != -1 || !NameStr.empty())
2278 return P.Error(NameLoc, "instructions returning void cannot have a name");
2282 // If this was a numbered instruction, verify that the instruction is the
2283 // expected value and resolve any forward references.
2284 if (NameStr.empty()) {
2285 // If neither a name nor an ID was specified, just use the next ID.
2287 NameID = NumberedVals.size();
2289 if (unsigned(NameID) != NumberedVals.size())
2290 return P.Error(NameLoc, "instruction expected to be numbered '%" +
2291 Twine(NumberedVals.size()) + "'");
2293 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
2294 ForwardRefValIDs.find(NameID);
2295 if (FI != ForwardRefValIDs.end()) {
2296 if (FI->second.first->getType() != Inst->getType())
2297 return P.Error(NameLoc, "instruction forward referenced with type '" +
2298 getTypeString(FI->second.first->getType()) + "'");
2299 FI->second.first->replaceAllUsesWith(Inst);
2300 delete FI->second.first;
2301 ForwardRefValIDs.erase(FI);
2304 NumberedVals.push_back(Inst);
2308 // Otherwise, the instruction had a name. Resolve forward refs and set it.
2309 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2310 FI = ForwardRefVals.find(NameStr);
2311 if (FI != ForwardRefVals.end()) {
2312 if (FI->second.first->getType() != Inst->getType())
2313 return P.Error(NameLoc, "instruction forward referenced with type '" +
2314 getTypeString(FI->second.first->getType()) + "'");
2315 FI->second.first->replaceAllUsesWith(Inst);
2316 delete FI->second.first;
2317 ForwardRefVals.erase(FI);
2320 // Set the name on the instruction.
2321 Inst->setName(NameStr);
2323 if (Inst->getName() != NameStr)
2324 return P.Error(NameLoc, "multiple definition of local value named '" +
2329 /// GetBB - Get a basic block with the specified name or ID, creating a
2330 /// forward reference record if needed.
2331 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2333 return cast_or_null<BasicBlock>(GetVal(Name,
2334 Type::getLabelTy(F.getContext()), Loc));
2337 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2338 return cast_or_null<BasicBlock>(GetVal(ID,
2339 Type::getLabelTy(F.getContext()), Loc));
2342 /// DefineBB - Define the specified basic block, which is either named or
2343 /// unnamed. If there is an error, this returns null otherwise it returns
2344 /// the block being defined.
2345 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2349 BB = GetBB(NumberedVals.size(), Loc);
2351 BB = GetBB(Name, Loc);
2352 if (!BB) return nullptr; // Already diagnosed error.
2354 // Move the block to the end of the function. Forward ref'd blocks are
2355 // inserted wherever they happen to be referenced.
2356 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2358 // Remove the block from forward ref sets.
2360 ForwardRefValIDs.erase(NumberedVals.size());
2361 NumberedVals.push_back(BB);
2363 // BB forward references are already in the function symbol table.
2364 ForwardRefVals.erase(Name);
2370 //===----------------------------------------------------------------------===//
2372 //===----------------------------------------------------------------------===//
2374 /// ParseValID - Parse an abstract value that doesn't necessarily have a
2375 /// type implied. For example, if we parse "4" we don't know what integer type
2376 /// it has. The value will later be combined with its type and checked for
2377 /// sanity. PFS is used to convert function-local operands of metadata (since
2378 /// metadata operands are not just parsed here but also converted to values).
2379 /// PFS can be null when we are not parsing metadata values inside a function.
2380 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2381 ID.Loc = Lex.getLoc();
2382 switch (Lex.getKind()) {
2383 default: return TokError("expected value token");
2384 case lltok::GlobalID: // @42
2385 ID.UIntVal = Lex.getUIntVal();
2386 ID.Kind = ValID::t_GlobalID;
2388 case lltok::GlobalVar: // @foo
2389 ID.StrVal = Lex.getStrVal();
2390 ID.Kind = ValID::t_GlobalName;
2392 case lltok::LocalVarID: // %42
2393 ID.UIntVal = Lex.getUIntVal();
2394 ID.Kind = ValID::t_LocalID;
2396 case lltok::LocalVar: // %foo
2397 ID.StrVal = Lex.getStrVal();
2398 ID.Kind = ValID::t_LocalName;
2401 ID.APSIntVal = Lex.getAPSIntVal();
2402 ID.Kind = ValID::t_APSInt;
2404 case lltok::APFloat:
2405 ID.APFloatVal = Lex.getAPFloatVal();
2406 ID.Kind = ValID::t_APFloat;
2408 case lltok::kw_true:
2409 ID.ConstantVal = ConstantInt::getTrue(Context);
2410 ID.Kind = ValID::t_Constant;
2412 case lltok::kw_false:
2413 ID.ConstantVal = ConstantInt::getFalse(Context);
2414 ID.Kind = ValID::t_Constant;
2416 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2417 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2418 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2420 case lltok::lbrace: {
2421 // ValID ::= '{' ConstVector '}'
2423 SmallVector<Constant*, 16> Elts;
2424 if (ParseGlobalValueVector(Elts) ||
2425 ParseToken(lltok::rbrace, "expected end of struct constant"))
2428 ID.ConstantStructElts = new Constant*[Elts.size()];
2429 ID.UIntVal = Elts.size();
2430 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2431 ID.Kind = ValID::t_ConstantStruct;
2435 // ValID ::= '<' ConstVector '>' --> Vector.
2436 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2438 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2440 SmallVector<Constant*, 16> Elts;
2441 LocTy FirstEltLoc = Lex.getLoc();
2442 if (ParseGlobalValueVector(Elts) ||
2444 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2445 ParseToken(lltok::greater, "expected end of constant"))
2448 if (isPackedStruct) {
2449 ID.ConstantStructElts = new Constant*[Elts.size()];
2450 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2451 ID.UIntVal = Elts.size();
2452 ID.Kind = ValID::t_PackedConstantStruct;
2457 return Error(ID.Loc, "constant vector must not be empty");
2459 if (!Elts[0]->getType()->isIntegerTy() &&
2460 !Elts[0]->getType()->isFloatingPointTy() &&
2461 !Elts[0]->getType()->isPointerTy())
2462 return Error(FirstEltLoc,
2463 "vector elements must have integer, pointer or floating point type");
2465 // Verify that all the vector elements have the same type.
2466 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2467 if (Elts[i]->getType() != Elts[0]->getType())
2468 return Error(FirstEltLoc,
2469 "vector element #" + Twine(i) +
2470 " is not of type '" + getTypeString(Elts[0]->getType()));
2472 ID.ConstantVal = ConstantVector::get(Elts);
2473 ID.Kind = ValID::t_Constant;
2476 case lltok::lsquare: { // Array Constant
2478 SmallVector<Constant*, 16> Elts;
2479 LocTy FirstEltLoc = Lex.getLoc();
2480 if (ParseGlobalValueVector(Elts) ||
2481 ParseToken(lltok::rsquare, "expected end of array constant"))
2484 // Handle empty element.
2486 // Use undef instead of an array because it's inconvenient to determine
2487 // the element type at this point, there being no elements to examine.
2488 ID.Kind = ValID::t_EmptyArray;
2492 if (!Elts[0]->getType()->isFirstClassType())
2493 return Error(FirstEltLoc, "invalid array element type: " +
2494 getTypeString(Elts[0]->getType()));
2496 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2498 // Verify all elements are correct type!
2499 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2500 if (Elts[i]->getType() != Elts[0]->getType())
2501 return Error(FirstEltLoc,
2502 "array element #" + Twine(i) +
2503 " is not of type '" + getTypeString(Elts[0]->getType()));
2506 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2507 ID.Kind = ValID::t_Constant;
2510 case lltok::kw_c: // c "foo"
2512 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2514 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2515 ID.Kind = ValID::t_Constant;
2518 case lltok::kw_asm: {
2519 // ValID ::= 'asm' SideEffect? AlignStack? IntelDialect? STRINGCONSTANT ','
2521 bool HasSideEffect, AlignStack, AsmDialect;
2523 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2524 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2525 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2526 ParseStringConstant(ID.StrVal) ||
2527 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2528 ParseToken(lltok::StringConstant, "expected constraint string"))
2530 ID.StrVal2 = Lex.getStrVal();
2531 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2532 (unsigned(AsmDialect)<<2);
2533 ID.Kind = ValID::t_InlineAsm;
2537 case lltok::kw_blockaddress: {
2538 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2543 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2545 ParseToken(lltok::comma, "expected comma in block address expression")||
2546 ParseValID(Label) ||
2547 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2550 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2551 return Error(Fn.Loc, "expected function name in blockaddress");
2552 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2553 return Error(Label.Loc, "expected basic block name in blockaddress");
2555 // Try to find the function (but skip it if it's forward-referenced).
2556 GlobalValue *GV = nullptr;
2557 if (Fn.Kind == ValID::t_GlobalID) {
2558 if (Fn.UIntVal < NumberedVals.size())
2559 GV = NumberedVals[Fn.UIntVal];
2560 } else if (!ForwardRefVals.count(Fn.StrVal)) {
2561 GV = M->getNamedValue(Fn.StrVal);
2563 Function *F = nullptr;
2565 // Confirm that it's actually a function with a definition.
2566 if (!isa<Function>(GV))
2567 return Error(Fn.Loc, "expected function name in blockaddress");
2568 F = cast<Function>(GV);
2569 if (F->isDeclaration())
2570 return Error(Fn.Loc, "cannot take blockaddress inside a declaration");
2574 // Make a global variable as a placeholder for this reference.
2575 GlobalValue *&FwdRef = ForwardRefBlockAddresses[Fn][Label];
2577 FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context), false,
2578 GlobalValue::InternalLinkage, nullptr, "");
2579 ID.ConstantVal = FwdRef;
2580 ID.Kind = ValID::t_Constant;
2584 // We found the function; now find the basic block. Don't use PFS, since we
2585 // might be inside a constant expression.
2587 if (BlockAddressPFS && F == &BlockAddressPFS->getFunction()) {
2588 if (Label.Kind == ValID::t_LocalID)
2589 BB = BlockAddressPFS->GetBB(Label.UIntVal, Label.Loc);
2591 BB = BlockAddressPFS->GetBB(Label.StrVal, Label.Loc);
2593 return Error(Label.Loc, "referenced value is not a basic block");
2595 if (Label.Kind == ValID::t_LocalID)
2596 return Error(Label.Loc, "cannot take address of numeric label after "
2597 "the function is defined");
2598 BB = dyn_cast_or_null<BasicBlock>(
2599 F->getValueSymbolTable().lookup(Label.StrVal));
2601 return Error(Label.Loc, "referenced value is not a basic block");
2604 ID.ConstantVal = BlockAddress::get(F, BB);
2605 ID.Kind = ValID::t_Constant;
2609 case lltok::kw_trunc:
2610 case lltok::kw_zext:
2611 case lltok::kw_sext:
2612 case lltok::kw_fptrunc:
2613 case lltok::kw_fpext:
2614 case lltok::kw_bitcast:
2615 case lltok::kw_addrspacecast:
2616 case lltok::kw_uitofp:
2617 case lltok::kw_sitofp:
2618 case lltok::kw_fptoui:
2619 case lltok::kw_fptosi:
2620 case lltok::kw_inttoptr:
2621 case lltok::kw_ptrtoint: {
2622 unsigned Opc = Lex.getUIntVal();
2623 Type *DestTy = nullptr;
2626 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2627 ParseGlobalTypeAndValue(SrcVal) ||
2628 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2629 ParseType(DestTy) ||
2630 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2632 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2633 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2634 getTypeString(SrcVal->getType()) + "' to '" +
2635 getTypeString(DestTy) + "'");
2636 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2638 ID.Kind = ValID::t_Constant;
2641 case lltok::kw_extractvalue: {
2644 SmallVector<unsigned, 4> Indices;
2645 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2646 ParseGlobalTypeAndValue(Val) ||
2647 ParseIndexList(Indices) ||
2648 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2651 if (!Val->getType()->isAggregateType())
2652 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2653 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
2654 return Error(ID.Loc, "invalid indices for extractvalue");
2655 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
2656 ID.Kind = ValID::t_Constant;
2659 case lltok::kw_insertvalue: {
2661 Constant *Val0, *Val1;
2662 SmallVector<unsigned, 4> Indices;
2663 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2664 ParseGlobalTypeAndValue(Val0) ||
2665 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2666 ParseGlobalTypeAndValue(Val1) ||
2667 ParseIndexList(Indices) ||
2668 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2670 if (!Val0->getType()->isAggregateType())
2671 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2672 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
2673 return Error(ID.Loc, "invalid indices for insertvalue");
2674 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
2675 ID.Kind = ValID::t_Constant;
2678 case lltok::kw_icmp:
2679 case lltok::kw_fcmp: {
2680 unsigned PredVal, Opc = Lex.getUIntVal();
2681 Constant *Val0, *Val1;
2683 if (ParseCmpPredicate(PredVal, Opc) ||
2684 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2685 ParseGlobalTypeAndValue(Val0) ||
2686 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2687 ParseGlobalTypeAndValue(Val1) ||
2688 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2691 if (Val0->getType() != Val1->getType())
2692 return Error(ID.Loc, "compare operands must have the same type");
2694 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2696 if (Opc == Instruction::FCmp) {
2697 if (!Val0->getType()->isFPOrFPVectorTy())
2698 return Error(ID.Loc, "fcmp requires floating point operands");
2699 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2701 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2702 if (!Val0->getType()->isIntOrIntVectorTy() &&
2703 !Val0->getType()->getScalarType()->isPointerTy())
2704 return Error(ID.Loc, "icmp requires pointer or integer operands");
2705 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2707 ID.Kind = ValID::t_Constant;
2711 // Binary Operators.
2713 case lltok::kw_fadd:
2715 case lltok::kw_fsub:
2717 case lltok::kw_fmul:
2718 case lltok::kw_udiv:
2719 case lltok::kw_sdiv:
2720 case lltok::kw_fdiv:
2721 case lltok::kw_urem:
2722 case lltok::kw_srem:
2723 case lltok::kw_frem:
2725 case lltok::kw_lshr:
2726 case lltok::kw_ashr: {
2730 unsigned Opc = Lex.getUIntVal();
2731 Constant *Val0, *Val1;
2733 LocTy ModifierLoc = Lex.getLoc();
2734 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
2735 Opc == Instruction::Mul || Opc == Instruction::Shl) {
2736 if (EatIfPresent(lltok::kw_nuw))
2738 if (EatIfPresent(lltok::kw_nsw)) {
2740 if (EatIfPresent(lltok::kw_nuw))
2743 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
2744 Opc == Instruction::LShr || Opc == Instruction::AShr) {
2745 if (EatIfPresent(lltok::kw_exact))
2748 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2749 ParseGlobalTypeAndValue(Val0) ||
2750 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2751 ParseGlobalTypeAndValue(Val1) ||
2752 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2754 if (Val0->getType() != Val1->getType())
2755 return Error(ID.Loc, "operands of constexpr must have same type");
2756 if (!Val0->getType()->isIntOrIntVectorTy()) {
2758 return Error(ModifierLoc, "nuw only applies to integer operations");
2760 return Error(ModifierLoc, "nsw only applies to integer operations");
2762 // Check that the type is valid for the operator.
2764 case Instruction::Add:
2765 case Instruction::Sub:
2766 case Instruction::Mul:
2767 case Instruction::UDiv:
2768 case Instruction::SDiv:
2769 case Instruction::URem:
2770 case Instruction::SRem:
2771 case Instruction::Shl:
2772 case Instruction::AShr:
2773 case Instruction::LShr:
2774 if (!Val0->getType()->isIntOrIntVectorTy())
2775 return Error(ID.Loc, "constexpr requires integer operands");
2777 case Instruction::FAdd:
2778 case Instruction::FSub:
2779 case Instruction::FMul:
2780 case Instruction::FDiv:
2781 case Instruction::FRem:
2782 if (!Val0->getType()->isFPOrFPVectorTy())
2783 return Error(ID.Loc, "constexpr requires fp operands");
2785 default: llvm_unreachable("Unknown binary operator!");
2788 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2789 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2790 if (Exact) Flags |= PossiblyExactOperator::IsExact;
2791 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2793 ID.Kind = ValID::t_Constant;
2797 // Logical Operations
2800 case lltok::kw_xor: {
2801 unsigned Opc = Lex.getUIntVal();
2802 Constant *Val0, *Val1;
2804 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2805 ParseGlobalTypeAndValue(Val0) ||
2806 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2807 ParseGlobalTypeAndValue(Val1) ||
2808 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2810 if (Val0->getType() != Val1->getType())
2811 return Error(ID.Loc, "operands of constexpr must have same type");
2812 if (!Val0->getType()->isIntOrIntVectorTy())
2813 return Error(ID.Loc,
2814 "constexpr requires integer or integer vector operands");
2815 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2816 ID.Kind = ValID::t_Constant;
2820 case lltok::kw_getelementptr:
2821 case lltok::kw_shufflevector:
2822 case lltok::kw_insertelement:
2823 case lltok::kw_extractelement:
2824 case lltok::kw_select: {
2825 unsigned Opc = Lex.getUIntVal();
2826 SmallVector<Constant*, 16> Elts;
2827 bool InBounds = false;
2829 if (Opc == Instruction::GetElementPtr)
2830 InBounds = EatIfPresent(lltok::kw_inbounds);
2831 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2832 ParseGlobalValueVector(Elts) ||
2833 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2836 if (Opc == Instruction::GetElementPtr) {
2837 if (Elts.size() == 0 ||
2838 !Elts[0]->getType()->getScalarType()->isPointerTy())
2839 return Error(ID.Loc, "getelementptr requires pointer operand");
2841 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
2842 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(), Indices))
2843 return Error(ID.Loc, "invalid indices for getelementptr");
2844 ID.ConstantVal = ConstantExpr::getGetElementPtr(Elts[0], Indices,
2846 } else if (Opc == Instruction::Select) {
2847 if (Elts.size() != 3)
2848 return Error(ID.Loc, "expected three operands to select");
2849 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2851 return Error(ID.Loc, Reason);
2852 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2853 } else if (Opc == Instruction::ShuffleVector) {
2854 if (Elts.size() != 3)
2855 return Error(ID.Loc, "expected three operands to shufflevector");
2856 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2857 return Error(ID.Loc, "invalid operands to shufflevector");
2859 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2860 } else if (Opc == Instruction::ExtractElement) {
2861 if (Elts.size() != 2)
2862 return Error(ID.Loc, "expected two operands to extractelement");
2863 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2864 return Error(ID.Loc, "invalid extractelement operands");
2865 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2867 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2868 if (Elts.size() != 3)
2869 return Error(ID.Loc, "expected three operands to insertelement");
2870 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2871 return Error(ID.Loc, "invalid insertelement operands");
2873 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2876 ID.Kind = ValID::t_Constant;
2885 /// ParseGlobalValue - Parse a global value with the specified type.
2886 bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
2890 bool Parsed = ParseValID(ID) ||
2891 ConvertValIDToValue(Ty, ID, V, nullptr);
2892 if (V && !(C = dyn_cast<Constant>(V)))
2893 return Error(ID.Loc, "global values must be constants");
2897 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2899 return ParseType(Ty) ||
2900 ParseGlobalValue(Ty, V);
2903 bool LLParser::parseOptionalComdat(StringRef GlobalName, Comdat *&C) {
2906 LocTy KwLoc = Lex.getLoc();
2907 if (!EatIfPresent(lltok::kw_comdat))
2910 if (EatIfPresent(lltok::lparen)) {
2911 if (Lex.getKind() != lltok::ComdatVar)
2912 return TokError("expected comdat variable");
2913 C = getComdat(Lex.getStrVal(), Lex.getLoc());
2915 if (ParseToken(lltok::rparen, "expected ')' after comdat var"))
2918 if (GlobalName.empty())
2919 return TokError("comdat cannot be unnamed");
2920 C = getComdat(GlobalName, KwLoc);
2926 /// ParseGlobalValueVector
2928 /// ::= TypeAndValue (',' TypeAndValue)*
2929 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant *> &Elts) {
2931 if (Lex.getKind() == lltok::rbrace ||
2932 Lex.getKind() == lltok::rsquare ||
2933 Lex.getKind() == lltok::greater ||
2934 Lex.getKind() == lltok::rparen)
2938 if (ParseGlobalTypeAndValue(C)) return true;
2941 while (EatIfPresent(lltok::comma)) {
2942 if (ParseGlobalTypeAndValue(C)) return true;
2949 bool LLParser::ParseMDNode(MDNode *&MD, bool IsDistinct) {
2950 SmallVector<Metadata *, 16> Elts;
2951 if (ParseMDNodeVector(Elts))
2955 MD = MDNode::getDistinct(Context, Elts);
2957 MD = MDNode::get(Context, Elts);
2961 /// ParseMetadataAsValue
2962 /// ::= metadata i32 %local
2963 /// ::= metadata i32 @global
2964 /// ::= metadata i32 7
2966 /// ::= metadata !{...}
2967 /// ::= metadata !"string"
2968 bool LLParser::ParseMetadataAsValue(Value *&V, PerFunctionState &PFS) {
2969 // Note: the type 'metadata' has already been parsed.
2971 if (ParseMetadata(MD, &PFS))
2974 V = MetadataAsValue::get(Context, MD);
2978 /// ParseValueAsMetadata
2982 bool LLParser::ParseValueAsMetadata(Metadata *&MD, PerFunctionState *PFS) {
2985 if (ParseType(Ty, "expected metadata operand", Loc))
2987 if (Ty->isMetadataTy())
2988 return Error(Loc, "invalid metadata-value-metadata roundtrip");
2991 if (ParseValue(Ty, V, PFS))
2994 MD = ValueAsMetadata::get(V);
3005 bool LLParser::ParseMetadata(Metadata *&MD, PerFunctionState *PFS) {
3008 if (Lex.getKind() != lltok::exclaim)
3009 return ParseValueAsMetadata(MD, PFS);
3012 assert(Lex.getKind() == lltok::exclaim && "Expected '!' here");
3017 if (Lex.getKind() == lltok::lbrace) {
3025 // Standalone metadata reference
3027 if (Lex.getKind() == lltok::APSInt) {
3029 if (ParseMDNodeID(N))
3036 // ::= '!' STRINGCONSTANT
3038 if (ParseMDString(S))
3045 //===----------------------------------------------------------------------===//
3046 // Function Parsing.
3047 //===----------------------------------------------------------------------===//
3049 bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
3050 PerFunctionState *PFS) {
3051 if (Ty->isFunctionTy())
3052 return Error(ID.Loc, "functions are not values, refer to them as pointers");
3055 case ValID::t_LocalID:
3056 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
3057 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
3058 return V == nullptr;
3059 case ValID::t_LocalName:
3060 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
3061 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
3062 return V == nullptr;
3063 case ValID::t_InlineAsm: {
3064 PointerType *PTy = dyn_cast<PointerType>(Ty);
3066 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : nullptr;
3067 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
3068 return Error(ID.Loc, "invalid type for inline asm constraint string");
3069 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1,
3070 (ID.UIntVal>>1)&1, (InlineAsm::AsmDialect(ID.UIntVal>>2)));
3073 case ValID::t_GlobalName:
3074 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
3075 return V == nullptr;
3076 case ValID::t_GlobalID:
3077 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
3078 return V == nullptr;
3079 case ValID::t_APSInt:
3080 if (!Ty->isIntegerTy())
3081 return Error(ID.Loc, "integer constant must have integer type");
3082 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
3083 V = ConstantInt::get(Context, ID.APSIntVal);
3085 case ValID::t_APFloat:
3086 if (!Ty->isFloatingPointTy() ||
3087 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
3088 return Error(ID.Loc, "floating point constant invalid for type");
3090 // The lexer has no type info, so builds all half, float, and double FP
3091 // constants as double. Fix this here. Long double does not need this.
3092 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble) {
3095 ID.APFloatVal.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven,
3097 else if (Ty->isFloatTy())
3098 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
3101 V = ConstantFP::get(Context, ID.APFloatVal);
3103 if (V->getType() != Ty)
3104 return Error(ID.Loc, "floating point constant does not have type '" +
3105 getTypeString(Ty) + "'");
3109 if (!Ty->isPointerTy())
3110 return Error(ID.Loc, "null must be a pointer type");
3111 V = ConstantPointerNull::get(cast<PointerType>(Ty));
3113 case ValID::t_Undef:
3114 // FIXME: LabelTy should not be a first-class type.
3115 if (!Ty->isFirstClassType() || Ty->isLabelTy())
3116 return Error(ID.Loc, "invalid type for undef constant");
3117 V = UndefValue::get(Ty);
3119 case ValID::t_EmptyArray:
3120 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
3121 return Error(ID.Loc, "invalid empty array initializer");
3122 V = UndefValue::get(Ty);
3125 // FIXME: LabelTy should not be a first-class type.
3126 if (!Ty->isFirstClassType() || Ty->isLabelTy())
3127 return Error(ID.Loc, "invalid type for null constant");
3128 V = Constant::getNullValue(Ty);
3130 case ValID::t_Constant:
3131 if (ID.ConstantVal->getType() != Ty)
3132 return Error(ID.Loc, "constant expression type mismatch");
3136 case ValID::t_ConstantStruct:
3137 case ValID::t_PackedConstantStruct:
3138 if (StructType *ST = dyn_cast<StructType>(Ty)) {
3139 if (ST->getNumElements() != ID.UIntVal)
3140 return Error(ID.Loc,
3141 "initializer with struct type has wrong # elements");
3142 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
3143 return Error(ID.Loc, "packed'ness of initializer and type don't match");
3145 // Verify that the elements are compatible with the structtype.
3146 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
3147 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
3148 return Error(ID.Loc, "element " + Twine(i) +
3149 " of struct initializer doesn't match struct element type");
3151 V = ConstantStruct::get(ST, makeArrayRef(ID.ConstantStructElts,
3154 return Error(ID.Loc, "constant expression type mismatch");
3157 llvm_unreachable("Invalid ValID");
3160 bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS) {
3163 return ParseValID(ID, PFS) ||
3164 ConvertValIDToValue(Ty, ID, V, PFS);
3167 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
3169 return ParseType(Ty) ||
3170 ParseValue(Ty, V, PFS);
3173 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
3174 PerFunctionState &PFS) {
3177 if (ParseTypeAndValue(V, PFS)) return true;
3178 if (!isa<BasicBlock>(V))
3179 return Error(Loc, "expected a basic block");
3180 BB = cast<BasicBlock>(V);
3186 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
3187 /// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
3188 /// OptionalAlign OptGC OptionalPrefix OptionalPrologue
3189 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
3190 // Parse the linkage.
3191 LocTy LinkageLoc = Lex.getLoc();
3194 unsigned Visibility;
3195 unsigned DLLStorageClass;
3196 AttrBuilder RetAttrs;
3198 Type *RetType = nullptr;
3199 LocTy RetTypeLoc = Lex.getLoc();
3200 if (ParseOptionalLinkage(Linkage) ||
3201 ParseOptionalVisibility(Visibility) ||
3202 ParseOptionalDLLStorageClass(DLLStorageClass) ||
3203 ParseOptionalCallingConv(CC) ||
3204 ParseOptionalReturnAttrs(RetAttrs) ||
3205 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
3208 // Verify that the linkage is ok.
3209 switch ((GlobalValue::LinkageTypes)Linkage) {
3210 case GlobalValue::ExternalLinkage:
3211 break; // always ok.
3212 case GlobalValue::ExternalWeakLinkage:
3214 return Error(LinkageLoc, "invalid linkage for function definition");
3216 case GlobalValue::PrivateLinkage:
3217 case GlobalValue::InternalLinkage:
3218 case GlobalValue::AvailableExternallyLinkage:
3219 case GlobalValue::LinkOnceAnyLinkage:
3220 case GlobalValue::LinkOnceODRLinkage:
3221 case GlobalValue::WeakAnyLinkage:
3222 case GlobalValue::WeakODRLinkage:
3224 return Error(LinkageLoc, "invalid linkage for function declaration");
3226 case GlobalValue::AppendingLinkage:
3227 case GlobalValue::CommonLinkage:
3228 return Error(LinkageLoc, "invalid function linkage type");
3231 if (!isValidVisibilityForLinkage(Visibility, Linkage))
3232 return Error(LinkageLoc,
3233 "symbol with local linkage must have default visibility");
3235 if (!FunctionType::isValidReturnType(RetType))
3236 return Error(RetTypeLoc, "invalid function return type");
3238 LocTy NameLoc = Lex.getLoc();
3240 std::string FunctionName;
3241 if (Lex.getKind() == lltok::GlobalVar) {
3242 FunctionName = Lex.getStrVal();
3243 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
3244 unsigned NameID = Lex.getUIntVal();
3246 if (NameID != NumberedVals.size())
3247 return TokError("function expected to be numbered '%" +
3248 Twine(NumberedVals.size()) + "'");
3250 return TokError("expected function name");
3255 if (Lex.getKind() != lltok::lparen)
3256 return TokError("expected '(' in function argument list");
3258 SmallVector<ArgInfo, 8> ArgList;
3260 AttrBuilder FuncAttrs;
3261 std::vector<unsigned> FwdRefAttrGrps;
3263 std::string Section;
3267 LocTy UnnamedAddrLoc;
3268 Constant *Prefix = nullptr;
3269 Constant *Prologue = nullptr;
3272 if (ParseArgumentList(ArgList, isVarArg) ||
3273 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
3275 ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false,
3277 (EatIfPresent(lltok::kw_section) &&
3278 ParseStringConstant(Section)) ||
3279 parseOptionalComdat(FunctionName, C) ||
3280 ParseOptionalAlignment(Alignment) ||
3281 (EatIfPresent(lltok::kw_gc) &&
3282 ParseStringConstant(GC)) ||
3283 (EatIfPresent(lltok::kw_prefix) &&
3284 ParseGlobalTypeAndValue(Prefix)) ||
3285 (EatIfPresent(lltok::kw_prologue) &&
3286 ParseGlobalTypeAndValue(Prologue)))
3289 if (FuncAttrs.contains(Attribute::Builtin))
3290 return Error(BuiltinLoc, "'builtin' attribute not valid on function");
3292 // If the alignment was parsed as an attribute, move to the alignment field.
3293 if (FuncAttrs.hasAlignmentAttr()) {
3294 Alignment = FuncAttrs.getAlignment();
3295 FuncAttrs.removeAttribute(Attribute::Alignment);
3298 // Okay, if we got here, the function is syntactically valid. Convert types
3299 // and do semantic checks.
3300 std::vector<Type*> ParamTypeList;
3301 SmallVector<AttributeSet, 8> Attrs;
3303 if (RetAttrs.hasAttributes())
3304 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3305 AttributeSet::ReturnIndex,
3308 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3309 ParamTypeList.push_back(ArgList[i].Ty);
3310 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
3311 AttrBuilder B(ArgList[i].Attrs, i + 1);
3312 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
3316 if (FuncAttrs.hasAttributes())
3317 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3318 AttributeSet::FunctionIndex,
3321 AttributeSet PAL = AttributeSet::get(Context, Attrs);
3323 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
3324 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
3327 FunctionType::get(RetType, ParamTypeList, isVarArg);
3328 PointerType *PFT = PointerType::getUnqual(FT);
3331 if (!FunctionName.empty()) {
3332 // If this was a definition of a forward reference, remove the definition
3333 // from the forward reference table and fill in the forward ref.
3334 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
3335 ForwardRefVals.find(FunctionName);
3336 if (FRVI != ForwardRefVals.end()) {
3337 Fn = M->getFunction(FunctionName);
3339 return Error(FRVI->second.second, "invalid forward reference to "
3340 "function as global value!");
3341 if (Fn->getType() != PFT)
3342 return Error(FRVI->second.second, "invalid forward reference to "
3343 "function '" + FunctionName + "' with wrong type!");
3345 ForwardRefVals.erase(FRVI);
3346 } else if ((Fn = M->getFunction(FunctionName))) {
3347 // Reject redefinitions.
3348 return Error(NameLoc, "invalid redefinition of function '" +
3349 FunctionName + "'");
3350 } else if (M->getNamedValue(FunctionName)) {
3351 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
3355 // If this is a definition of a forward referenced function, make sure the
3357 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
3358 = ForwardRefValIDs.find(NumberedVals.size());
3359 if (I != ForwardRefValIDs.end()) {
3360 Fn = cast<Function>(I->second.first);
3361 if (Fn->getType() != PFT)
3362 return Error(NameLoc, "type of definition and forward reference of '@" +
3363 Twine(NumberedVals.size()) + "' disagree");
3364 ForwardRefValIDs.erase(I);
3369 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
3370 else // Move the forward-reference to the correct spot in the module.
3371 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
3373 if (FunctionName.empty())
3374 NumberedVals.push_back(Fn);
3376 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
3377 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
3378 Fn->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
3379 Fn->setCallingConv(CC);
3380 Fn->setAttributes(PAL);
3381 Fn->setUnnamedAddr(UnnamedAddr);
3382 Fn->setAlignment(Alignment);
3383 Fn->setSection(Section);
3385 if (!GC.empty()) Fn->setGC(GC.c_str());
3386 Fn->setPrefixData(Prefix);
3387 Fn->setPrologueData(Prologue);
3388 ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
3390 // Add all of the arguments we parsed to the function.
3391 Function::arg_iterator ArgIt = Fn->arg_begin();
3392 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
3393 // If the argument has a name, insert it into the argument symbol table.
3394 if (ArgList[i].Name.empty()) continue;
3396 // Set the name, if it conflicted, it will be auto-renamed.
3397 ArgIt->setName(ArgList[i].Name);
3399 if (ArgIt->getName() != ArgList[i].Name)
3400 return Error(ArgList[i].Loc, "redefinition of argument '%" +
3401 ArgList[i].Name + "'");
3407 // Check the declaration has no block address forward references.
3409 if (FunctionName.empty()) {
3410 ID.Kind = ValID::t_GlobalID;
3411 ID.UIntVal = NumberedVals.size() - 1;
3413 ID.Kind = ValID::t_GlobalName;
3414 ID.StrVal = FunctionName;
3416 auto Blocks = ForwardRefBlockAddresses.find(ID);
3417 if (Blocks != ForwardRefBlockAddresses.end())
3418 return Error(Blocks->first.Loc,
3419 "cannot take blockaddress inside a declaration");
3423 bool LLParser::PerFunctionState::resolveForwardRefBlockAddresses() {
3425 if (FunctionNumber == -1) {
3426 ID.Kind = ValID::t_GlobalName;
3427 ID.StrVal = F.getName();
3429 ID.Kind = ValID::t_GlobalID;
3430 ID.UIntVal = FunctionNumber;
3433 auto Blocks = P.ForwardRefBlockAddresses.find(ID);
3434 if (Blocks == P.ForwardRefBlockAddresses.end())
3437 for (const auto &I : Blocks->second) {
3438 const ValID &BBID = I.first;
3439 GlobalValue *GV = I.second;
3441 assert((BBID.Kind == ValID::t_LocalID || BBID.Kind == ValID::t_LocalName) &&
3442 "Expected local id or name");
3444 if (BBID.Kind == ValID::t_LocalName)
3445 BB = GetBB(BBID.StrVal, BBID.Loc);
3447 BB = GetBB(BBID.UIntVal, BBID.Loc);
3449 return P.Error(BBID.Loc, "referenced value is not a basic block");
3451 GV->replaceAllUsesWith(BlockAddress::get(&F, BB));
3452 GV->eraseFromParent();
3455 P.ForwardRefBlockAddresses.erase(Blocks);
3459 /// ParseFunctionBody
3460 /// ::= '{' BasicBlock+ UseListOrderDirective* '}'
3461 bool LLParser::ParseFunctionBody(Function &Fn) {
3462 if (Lex.getKind() != lltok::lbrace)
3463 return TokError("expected '{' in function body");
3464 Lex.Lex(); // eat the {.
3466 int FunctionNumber = -1;
3467 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
3469 PerFunctionState PFS(*this, Fn, FunctionNumber);
3471 // Resolve block addresses and allow basic blocks to be forward-declared
3472 // within this function.
3473 if (PFS.resolveForwardRefBlockAddresses())
3475 SaveAndRestore<PerFunctionState *> ScopeExit(BlockAddressPFS, &PFS);
3477 // We need at least one basic block.
3478 if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_uselistorder)
3479 return TokError("function body requires at least one basic block");
3481 while (Lex.getKind() != lltok::rbrace &&
3482 Lex.getKind() != lltok::kw_uselistorder)
3483 if (ParseBasicBlock(PFS)) return true;
3485 while (Lex.getKind() != lltok::rbrace)
3486 if (ParseUseListOrder(&PFS))
3492 // Verify function is ok.
3493 return PFS.FinishFunction();
3497 /// ::= LabelStr? Instruction*
3498 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
3499 // If this basic block starts out with a name, remember it.
3501 LocTy NameLoc = Lex.getLoc();
3502 if (Lex.getKind() == lltok::LabelStr) {
3503 Name = Lex.getStrVal();
3507 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
3508 if (!BB) return true;
3510 std::string NameStr;
3512 // Parse the instructions in this block until we get a terminator.
3515 // This instruction may have three possibilities for a name: a) none
3516 // specified, b) name specified "%foo =", c) number specified: "%4 =".
3517 LocTy NameLoc = Lex.getLoc();
3521 if (Lex.getKind() == lltok::LocalVarID) {
3522 NameID = Lex.getUIntVal();
3524 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
3526 } else if (Lex.getKind() == lltok::LocalVar) {
3527 NameStr = Lex.getStrVal();
3529 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
3533 switch (ParseInstruction(Inst, BB, PFS)) {
3534 default: llvm_unreachable("Unknown ParseInstruction result!");
3535 case InstError: return true;
3537 BB->getInstList().push_back(Inst);
3539 // With a normal result, we check to see if the instruction is followed by
3540 // a comma and metadata.
3541 if (EatIfPresent(lltok::comma))
3542 if (ParseInstructionMetadata(Inst, &PFS))
3545 case InstExtraComma:
3546 BB->getInstList().push_back(Inst);
3548 // If the instruction parser ate an extra comma at the end of it, it
3549 // *must* be followed by metadata.
3550 if (ParseInstructionMetadata(Inst, &PFS))
3555 // Set the name on the instruction.
3556 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
3557 } while (!isa<TerminatorInst>(Inst));
3562 //===----------------------------------------------------------------------===//
3563 // Instruction Parsing.
3564 //===----------------------------------------------------------------------===//
3566 /// ParseInstruction - Parse one of the many different instructions.
3568 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
3569 PerFunctionState &PFS) {
3570 lltok::Kind Token = Lex.getKind();
3571 if (Token == lltok::Eof)
3572 return TokError("found end of file when expecting more instructions");
3573 LocTy Loc = Lex.getLoc();
3574 unsigned KeywordVal = Lex.getUIntVal();
3575 Lex.Lex(); // Eat the keyword.
3578 default: return Error(Loc, "expected instruction opcode");
3579 // Terminator Instructions.
3580 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
3581 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
3582 case lltok::kw_br: return ParseBr(Inst, PFS);
3583 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
3584 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
3585 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
3586 case lltok::kw_resume: return ParseResume(Inst, PFS);
3587 // Binary Operators.
3591 case lltok::kw_shl: {
3592 bool NUW = EatIfPresent(lltok::kw_nuw);
3593 bool NSW = EatIfPresent(lltok::kw_nsw);
3594 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
3596 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3598 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
3599 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
3602 case lltok::kw_fadd:
3603 case lltok::kw_fsub:
3604 case lltok::kw_fmul:
3605 case lltok::kw_fdiv:
3606 case lltok::kw_frem: {
3607 FastMathFlags FMF = EatFastMathFlagsIfPresent();
3608 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
3612 Inst->setFastMathFlags(FMF);
3616 case lltok::kw_sdiv:
3617 case lltok::kw_udiv:
3618 case lltok::kw_lshr:
3619 case lltok::kw_ashr: {
3620 bool Exact = EatIfPresent(lltok::kw_exact);
3622 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3623 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
3627 case lltok::kw_urem:
3628 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
3631 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
3632 case lltok::kw_icmp:
3633 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
3635 case lltok::kw_trunc:
3636 case lltok::kw_zext:
3637 case lltok::kw_sext:
3638 case lltok::kw_fptrunc:
3639 case lltok::kw_fpext:
3640 case lltok::kw_bitcast:
3641 case lltok::kw_addrspacecast:
3642 case lltok::kw_uitofp:
3643 case lltok::kw_sitofp:
3644 case lltok::kw_fptoui:
3645 case lltok::kw_fptosi:
3646 case lltok::kw_inttoptr:
3647 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
3649 case lltok::kw_select: return ParseSelect(Inst, PFS);
3650 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
3651 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
3652 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
3653 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
3654 case lltok::kw_phi: return ParsePHI(Inst, PFS);
3655 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
3657 case lltok::kw_call: return ParseCall(Inst, PFS, CallInst::TCK_None);
3658 case lltok::kw_tail: return ParseCall(Inst, PFS, CallInst::TCK_Tail);
3659 case lltok::kw_musttail: return ParseCall(Inst, PFS, CallInst::TCK_MustTail);
3661 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
3662 case lltok::kw_load: return ParseLoad(Inst, PFS);
3663 case lltok::kw_store: return ParseStore(Inst, PFS);
3664 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
3665 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
3666 case lltok::kw_fence: return ParseFence(Inst, PFS);
3667 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
3668 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
3669 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
3673 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
3674 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
3675 if (Opc == Instruction::FCmp) {
3676 switch (Lex.getKind()) {
3677 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
3678 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
3679 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
3680 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
3681 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
3682 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
3683 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
3684 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
3685 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
3686 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
3687 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
3688 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
3689 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
3690 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
3691 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
3692 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
3693 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
3696 switch (Lex.getKind()) {
3697 default: return TokError("expected icmp predicate (e.g. 'eq')");
3698 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
3699 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
3700 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
3701 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
3702 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
3703 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
3704 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
3705 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
3706 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
3707 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3714 //===----------------------------------------------------------------------===//
3715 // Terminator Instructions.
3716 //===----------------------------------------------------------------------===//
3718 /// ParseRet - Parse a return instruction.
3719 /// ::= 'ret' void (',' !dbg, !1)*
3720 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
3721 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3722 PerFunctionState &PFS) {
3723 SMLoc TypeLoc = Lex.getLoc();
3725 if (ParseType(Ty, true /*void allowed*/)) return true;
3727 Type *ResType = PFS.getFunction().getReturnType();
3729 if (Ty->isVoidTy()) {
3730 if (!ResType->isVoidTy())
3731 return Error(TypeLoc, "value doesn't match function result type '" +
3732 getTypeString(ResType) + "'");
3734 Inst = ReturnInst::Create(Context);
3739 if (ParseValue(Ty, RV, PFS)) return true;
3741 if (ResType != RV->getType())
3742 return Error(TypeLoc, "value doesn't match function result type '" +
3743 getTypeString(ResType) + "'");
3745 Inst = ReturnInst::Create(Context, RV);
3751 /// ::= 'br' TypeAndValue
3752 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3753 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
3756 BasicBlock *Op1, *Op2;
3757 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
3759 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
3760 Inst = BranchInst::Create(BB);
3764 if (Op0->getType() != Type::getInt1Ty(Context))
3765 return Error(Loc, "branch condition must have 'i1' type");
3767 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
3768 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
3769 ParseToken(lltok::comma, "expected ',' after true destination") ||
3770 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
3773 Inst = BranchInst::Create(Op1, Op2, Op0);
3779 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
3781 /// ::= (TypeAndValue ',' TypeAndValue)*
3782 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
3783 LocTy CondLoc, BBLoc;
3785 BasicBlock *DefaultBB;
3786 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
3787 ParseToken(lltok::comma, "expected ',' after switch condition") ||
3788 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
3789 ParseToken(lltok::lsquare, "expected '[' with switch table"))
3792 if (!Cond->getType()->isIntegerTy())
3793 return Error(CondLoc, "switch condition must have integer type");
3795 // Parse the jump table pairs.
3796 SmallPtrSet<Value*, 32> SeenCases;
3797 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
3798 while (Lex.getKind() != lltok::rsquare) {
3802 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
3803 ParseToken(lltok::comma, "expected ',' after case value") ||
3804 ParseTypeAndBasicBlock(DestBB, PFS))
3807 if (!SeenCases.insert(Constant).second)
3808 return Error(CondLoc, "duplicate case value in switch");
3809 if (!isa<ConstantInt>(Constant))
3810 return Error(CondLoc, "case value is not a constant integer");
3812 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
3815 Lex.Lex(); // Eat the ']'.
3817 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
3818 for (unsigned i = 0, e = Table.size(); i != e; ++i)
3819 SI->addCase(Table[i].first, Table[i].second);
3826 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
3827 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
3830 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
3831 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
3832 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
3835 if (!Address->getType()->isPointerTy())
3836 return Error(AddrLoc, "indirectbr address must have pointer type");
3838 // Parse the destination list.
3839 SmallVector<BasicBlock*, 16> DestList;
3841 if (Lex.getKind() != lltok::rsquare) {
3843 if (ParseTypeAndBasicBlock(DestBB, PFS))
3845 DestList.push_back(DestBB);
3847 while (EatIfPresent(lltok::comma)) {
3848 if (ParseTypeAndBasicBlock(DestBB, PFS))
3850 DestList.push_back(DestBB);
3854 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
3857 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
3858 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
3859 IBI->addDestination(DestList[i]);
3866 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3867 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3868 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3869 LocTy CallLoc = Lex.getLoc();
3870 AttrBuilder RetAttrs, FnAttrs;
3871 std::vector<unsigned> FwdRefAttrGrps;
3874 Type *RetType = nullptr;
3877 SmallVector<ParamInfo, 16> ArgList;
3879 BasicBlock *NormalBB, *UnwindBB;
3880 if (ParseOptionalCallingConv(CC) ||
3881 ParseOptionalReturnAttrs(RetAttrs) ||
3882 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3883 ParseValID(CalleeID) ||
3884 ParseParameterList(ArgList, PFS) ||
3885 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
3887 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3888 ParseTypeAndBasicBlock(NormalBB, PFS) ||
3889 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3890 ParseTypeAndBasicBlock(UnwindBB, PFS))
3893 // If RetType is a non-function pointer type, then this is the short syntax
3894 // for the call, which means that RetType is just the return type. Infer the
3895 // rest of the function argument types from the arguments that are present.
3896 PointerType *PFTy = nullptr;
3897 FunctionType *Ty = nullptr;
3898 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3899 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3900 // Pull out the types of all of the arguments...
3901 std::vector<Type*> ParamTypes;
3902 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3903 ParamTypes.push_back(ArgList[i].V->getType());
3905 if (!FunctionType::isValidReturnType(RetType))
3906 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3908 Ty = FunctionType::get(RetType, ParamTypes, false);
3909 PFTy = PointerType::getUnqual(Ty);
3912 // Look up the callee.
3914 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3916 // Set up the Attribute for the function.
3917 SmallVector<AttributeSet, 8> Attrs;
3918 if (RetAttrs.hasAttributes())
3919 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3920 AttributeSet::ReturnIndex,
3923 SmallVector<Value*, 8> Args;
3925 // Loop through FunctionType's arguments and ensure they are specified
3926 // correctly. Also, gather any parameter attributes.
3927 FunctionType::param_iterator I = Ty->param_begin();
3928 FunctionType::param_iterator E = Ty->param_end();
3929 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3930 Type *ExpectedTy = nullptr;
3933 } else if (!Ty->isVarArg()) {
3934 return Error(ArgList[i].Loc, "too many arguments specified");
3937 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3938 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3939 getTypeString(ExpectedTy) + "'");
3940 Args.push_back(ArgList[i].V);
3941 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
3942 AttrBuilder B(ArgList[i].Attrs, i + 1);
3943 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
3948 return Error(CallLoc, "not enough parameters specified for call");
3950 if (FnAttrs.hasAttributes())
3951 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3952 AttributeSet::FunctionIndex,
3955 // Finish off the Attribute and check them
3956 AttributeSet PAL = AttributeSet::get(Context, Attrs);
3958 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB, Args);
3959 II->setCallingConv(CC);
3960 II->setAttributes(PAL);
3961 ForwardRefAttrGroups[II] = FwdRefAttrGrps;
3967 /// ::= 'resume' TypeAndValue
3968 bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
3969 Value *Exn; LocTy ExnLoc;
3970 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
3973 ResumeInst *RI = ResumeInst::Create(Exn);
3978 //===----------------------------------------------------------------------===//
3979 // Binary Operators.
3980 //===----------------------------------------------------------------------===//
3983 /// ::= ArithmeticOps TypeAndValue ',' Value
3985 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3986 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3987 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3988 unsigned Opc, unsigned OperandType) {
3989 LocTy Loc; Value *LHS, *RHS;
3990 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3991 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3992 ParseValue(LHS->getType(), RHS, PFS))
3996 switch (OperandType) {
3997 default: llvm_unreachable("Unknown operand type!");
3998 case 0: // int or FP.
3999 Valid = LHS->getType()->isIntOrIntVectorTy() ||
4000 LHS->getType()->isFPOrFPVectorTy();
4002 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
4003 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
4007 return Error(Loc, "invalid operand type for instruction");
4009 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
4014 /// ::= ArithmeticOps TypeAndValue ',' Value {
4015 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
4017 LocTy Loc; Value *LHS, *RHS;
4018 if (ParseTypeAndValue(LHS, Loc, PFS) ||
4019 ParseToken(lltok::comma, "expected ',' in logical operation") ||
4020 ParseValue(LHS->getType(), RHS, PFS))
4023 if (!LHS->getType()->isIntOrIntVectorTy())
4024 return Error(Loc,"instruction requires integer or integer vector operands");
4026 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
4032 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
4033 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
4034 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
4036 // Parse the integer/fp comparison predicate.
4040 if (ParseCmpPredicate(Pred, Opc) ||
4041 ParseTypeAndValue(LHS, Loc, PFS) ||
4042 ParseToken(lltok::comma, "expected ',' after compare value") ||
4043 ParseValue(LHS->getType(), RHS, PFS))
4046 if (Opc == Instruction::FCmp) {
4047 if (!LHS->getType()->isFPOrFPVectorTy())
4048 return Error(Loc, "fcmp requires floating point operands");
4049 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
4051 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
4052 if (!LHS->getType()->isIntOrIntVectorTy() &&
4053 !LHS->getType()->getScalarType()->isPointerTy())
4054 return Error(Loc, "icmp requires integer operands");
4055 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
4060 //===----------------------------------------------------------------------===//
4061 // Other Instructions.
4062 //===----------------------------------------------------------------------===//
4066 /// ::= CastOpc TypeAndValue 'to' Type
4067 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
4071 Type *DestTy = nullptr;
4072 if (ParseTypeAndValue(Op, Loc, PFS) ||
4073 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
4077 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
4078 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
4079 return Error(Loc, "invalid cast opcode for cast from '" +
4080 getTypeString(Op->getType()) + "' to '" +
4081 getTypeString(DestTy) + "'");
4083 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
4088 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
4089 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
4091 Value *Op0, *Op1, *Op2;
4092 if (ParseTypeAndValue(Op0, Loc, PFS) ||
4093 ParseToken(lltok::comma, "expected ',' after select condition") ||
4094 ParseTypeAndValue(Op1, PFS) ||
4095 ParseToken(lltok::comma, "expected ',' after select value") ||
4096 ParseTypeAndValue(Op2, PFS))
4099 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
4100 return Error(Loc, Reason);
4102 Inst = SelectInst::Create(Op0, Op1, Op2);
4107 /// ::= 'va_arg' TypeAndValue ',' Type
4108 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
4110 Type *EltTy = nullptr;
4112 if (ParseTypeAndValue(Op, PFS) ||
4113 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
4114 ParseType(EltTy, TypeLoc))
4117 if (!EltTy->isFirstClassType())
4118 return Error(TypeLoc, "va_arg requires operand with first class type");
4120 Inst = new VAArgInst(Op, EltTy);
4124 /// ParseExtractElement
4125 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
4126 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
4129 if (ParseTypeAndValue(Op0, Loc, PFS) ||
4130 ParseToken(lltok::comma, "expected ',' after extract value") ||
4131 ParseTypeAndValue(Op1, PFS))
4134 if (!ExtractElementInst::isValidOperands(Op0, Op1))
4135 return Error(Loc, "invalid extractelement operands");
4137 Inst = ExtractElementInst::Create(Op0, Op1);
4141 /// ParseInsertElement
4142 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
4143 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
4145 Value *Op0, *Op1, *Op2;
4146 if (ParseTypeAndValue(Op0, Loc, PFS) ||
4147 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
4148 ParseTypeAndValue(Op1, PFS) ||
4149 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
4150 ParseTypeAndValue(Op2, PFS))
4153 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
4154 return Error(Loc, "invalid insertelement operands");
4156 Inst = InsertElementInst::Create(Op0, Op1, Op2);
4160 /// ParseShuffleVector
4161 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
4162 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
4164 Value *Op0, *Op1, *Op2;
4165 if (ParseTypeAndValue(Op0, Loc, PFS) ||
4166 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
4167 ParseTypeAndValue(Op1, PFS) ||
4168 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
4169 ParseTypeAndValue(Op2, PFS))
4172 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
4173 return Error(Loc, "invalid shufflevector operands");
4175 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
4180 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
4181 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
4182 Type *Ty = nullptr; LocTy TypeLoc;
4185 if (ParseType(Ty, TypeLoc) ||
4186 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
4187 ParseValue(Ty, Op0, PFS) ||
4188 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
4189 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
4190 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
4193 bool AteExtraComma = false;
4194 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
4196 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
4198 if (!EatIfPresent(lltok::comma))
4201 if (Lex.getKind() == lltok::MetadataVar) {
4202 AteExtraComma = true;
4206 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
4207 ParseValue(Ty, Op0, PFS) ||
4208 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
4209 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
4210 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
4214 if (!Ty->isFirstClassType())
4215 return Error(TypeLoc, "phi node must have first class type");
4217 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
4218 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
4219 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
4221 return AteExtraComma ? InstExtraComma : InstNormal;
4225 /// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
4227 /// ::= 'catch' TypeAndValue
4229 /// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
4230 bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
4231 Type *Ty = nullptr; LocTy TyLoc;
4232 Value *PersFn; LocTy PersFnLoc;
4234 if (ParseType(Ty, TyLoc) ||
4235 ParseToken(lltok::kw_personality, "expected 'personality'") ||
4236 ParseTypeAndValue(PersFn, PersFnLoc, PFS))
4239 LandingPadInst *LP = LandingPadInst::Create(Ty, PersFn, 0);
4240 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
4242 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
4243 LandingPadInst::ClauseType CT;
4244 if (EatIfPresent(lltok::kw_catch))
4245 CT = LandingPadInst::Catch;
4246 else if (EatIfPresent(lltok::kw_filter))
4247 CT = LandingPadInst::Filter;
4249 return TokError("expected 'catch' or 'filter' clause type");
4253 if (ParseTypeAndValue(V, VLoc, PFS)) {
4258 // A 'catch' type expects a non-array constant. A filter clause expects an
4260 if (CT == LandingPadInst::Catch) {
4261 if (isa<ArrayType>(V->getType()))
4262 Error(VLoc, "'catch' clause has an invalid type");
4264 if (!isa<ArrayType>(V->getType()))
4265 Error(VLoc, "'filter' clause has an invalid type");
4268 LP->addClause(cast<Constant>(V));
4276 /// ::= 'call' OptionalCallingConv OptionalAttrs Type Value
4277 /// ParameterList OptionalAttrs
4278 /// ::= 'tail' 'call' OptionalCallingConv OptionalAttrs Type Value
4279 /// ParameterList OptionalAttrs
4280 /// ::= 'musttail' 'call' OptionalCallingConv OptionalAttrs Type Value
4281 /// ParameterList OptionalAttrs
4282 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
4283 CallInst::TailCallKind TCK) {
4284 AttrBuilder RetAttrs, FnAttrs;
4285 std::vector<unsigned> FwdRefAttrGrps;
4288 Type *RetType = nullptr;
4291 SmallVector<ParamInfo, 16> ArgList;
4292 LocTy CallLoc = Lex.getLoc();
4294 if ((TCK != CallInst::TCK_None &&
4295 ParseToken(lltok::kw_call, "expected 'tail call'")) ||
4296 ParseOptionalCallingConv(CC) ||
4297 ParseOptionalReturnAttrs(RetAttrs) ||
4298 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
4299 ParseValID(CalleeID) ||
4300 ParseParameterList(ArgList, PFS, TCK == CallInst::TCK_MustTail,
4301 PFS.getFunction().isVarArg()) ||
4302 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
4306 // If RetType is a non-function pointer type, then this is the short syntax
4307 // for the call, which means that RetType is just the return type. Infer the
4308 // rest of the function argument types from the arguments that are present.
4309 PointerType *PFTy = nullptr;
4310 FunctionType *Ty = nullptr;
4311 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
4312 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
4313 // Pull out the types of all of the arguments...
4314 std::vector<Type*> ParamTypes;
4315 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
4316 ParamTypes.push_back(ArgList[i].V->getType());
4318 if (!FunctionType::isValidReturnType(RetType))
4319 return Error(RetTypeLoc, "Invalid result type for LLVM function");
4321 Ty = FunctionType::get(RetType, ParamTypes, false);
4322 PFTy = PointerType::getUnqual(Ty);
4325 // Look up the callee.
4327 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
4329 // Set up the Attribute for the function.
4330 SmallVector<AttributeSet, 8> Attrs;
4331 if (RetAttrs.hasAttributes())
4332 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4333 AttributeSet::ReturnIndex,
4336 SmallVector<Value*, 8> Args;
4338 // Loop through FunctionType's arguments and ensure they are specified
4339 // correctly. Also, gather any parameter attributes.
4340 FunctionType::param_iterator I = Ty->param_begin();
4341 FunctionType::param_iterator E = Ty->param_end();
4342 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
4343 Type *ExpectedTy = nullptr;
4346 } else if (!Ty->isVarArg()) {
4347 return Error(ArgList[i].Loc, "too many arguments specified");
4350 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
4351 return Error(ArgList[i].Loc, "argument is not of expected type '" +
4352 getTypeString(ExpectedTy) + "'");
4353 Args.push_back(ArgList[i].V);
4354 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
4355 AttrBuilder B(ArgList[i].Attrs, i + 1);
4356 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
4361 return Error(CallLoc, "not enough parameters specified for call");
4363 if (FnAttrs.hasAttributes())
4364 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4365 AttributeSet::FunctionIndex,
4368 // Finish off the Attribute and check them
4369 AttributeSet PAL = AttributeSet::get(Context, Attrs);
4371 CallInst *CI = CallInst::Create(Callee, Args);
4372 CI->setTailCallKind(TCK);
4373 CI->setCallingConv(CC);
4374 CI->setAttributes(PAL);
4375 ForwardRefAttrGroups[CI] = FwdRefAttrGrps;
4380 //===----------------------------------------------------------------------===//
4381 // Memory Instructions.
4382 //===----------------------------------------------------------------------===//
4385 /// ::= 'alloca' 'inalloca'? Type (',' TypeAndValue)? (',' 'align' i32)?
4386 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
4387 Value *Size = nullptr;
4389 unsigned Alignment = 0;
4392 bool IsInAlloca = EatIfPresent(lltok::kw_inalloca);
4394 if (ParseType(Ty)) return true;
4396 bool AteExtraComma = false;
4397 if (EatIfPresent(lltok::comma)) {
4398 if (Lex.getKind() == lltok::kw_align) {
4399 if (ParseOptionalAlignment(Alignment)) return true;
4400 } else if (Lex.getKind() == lltok::MetadataVar) {
4401 AteExtraComma = true;
4403 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
4404 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4409 if (Size && !Size->getType()->isIntegerTy())
4410 return Error(SizeLoc, "element count must have integer type");
4412 AllocaInst *AI = new AllocaInst(Ty, Size, Alignment);
4413 AI->setUsedWithInAlloca(IsInAlloca);
4415 return AteExtraComma ? InstExtraComma : InstNormal;
4419 /// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
4420 /// ::= 'load' 'atomic' 'volatile'? TypeAndValue
4421 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
4422 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
4423 Value *Val; LocTy Loc;
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 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
4443 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4446 if (!Val->getType()->isPointerTy() ||
4447 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
4448 return Error(Loc, "load operand must be a pointer to a first class type");
4449 if (isAtomic && !Alignment)
4450 return Error(Loc, "atomic load must have explicit non-zero alignment");
4451 if (Ordering == Release || Ordering == AcquireRelease)
4452 return Error(Loc, "atomic load cannot use Release ordering");
4454 Inst = new LoadInst(Val, "", isVolatile, Alignment, Ordering, Scope);
4455 return AteExtraComma ? InstExtraComma : InstNormal;
4460 /// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
4461 /// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
4462 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
4463 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
4464 Value *Val, *Ptr; LocTy Loc, PtrLoc;
4465 unsigned Alignment = 0;
4466 bool AteExtraComma = false;
4467 bool isAtomic = false;
4468 AtomicOrdering Ordering = NotAtomic;
4469 SynchronizationScope Scope = CrossThread;
4471 if (Lex.getKind() == lltok::kw_atomic) {
4476 bool isVolatile = false;
4477 if (Lex.getKind() == lltok::kw_volatile) {
4482 if (ParseTypeAndValue(Val, Loc, PFS) ||
4483 ParseToken(lltok::comma, "expected ',' after store operand") ||
4484 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4485 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
4486 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4489 if (!Ptr->getType()->isPointerTy())
4490 return Error(PtrLoc, "store operand must be a pointer");
4491 if (!Val->getType()->isFirstClassType())
4492 return Error(Loc, "store operand must be a first class value");
4493 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
4494 return Error(Loc, "stored value and pointer type do not match");
4495 if (isAtomic && !Alignment)
4496 return Error(Loc, "atomic store must have explicit non-zero alignment");
4497 if (Ordering == Acquire || Ordering == AcquireRelease)
4498 return Error(Loc, "atomic store cannot use Acquire ordering");
4500 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, Scope);
4501 return AteExtraComma ? InstExtraComma : InstNormal;
4505 /// ::= 'cmpxchg' 'weak'? 'volatile'? TypeAndValue ',' TypeAndValue ','
4506 /// TypeAndValue 'singlethread'? AtomicOrdering AtomicOrdering
4507 int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
4508 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
4509 bool AteExtraComma = false;
4510 AtomicOrdering SuccessOrdering = NotAtomic;
4511 AtomicOrdering FailureOrdering = NotAtomic;
4512 SynchronizationScope Scope = CrossThread;
4513 bool isVolatile = false;
4514 bool isWeak = false;
4516 if (EatIfPresent(lltok::kw_weak))
4519 if (EatIfPresent(lltok::kw_volatile))
4522 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4523 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
4524 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
4525 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
4526 ParseTypeAndValue(New, NewLoc, PFS) ||
4527 ParseScopeAndOrdering(true /*Always atomic*/, Scope, SuccessOrdering) ||
4528 ParseOrdering(FailureOrdering))
4531 if (SuccessOrdering == Unordered || FailureOrdering == Unordered)
4532 return TokError("cmpxchg cannot be unordered");
4533 if (SuccessOrdering < FailureOrdering)
4534 return TokError("cmpxchg must be at least as ordered on success as failure");
4535 if (FailureOrdering == Release || FailureOrdering == AcquireRelease)
4536 return TokError("cmpxchg failure ordering cannot include release semantics");
4537 if (!Ptr->getType()->isPointerTy())
4538 return Error(PtrLoc, "cmpxchg operand must be a pointer");
4539 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
4540 return Error(CmpLoc, "compare value and pointer type do not match");
4541 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
4542 return Error(NewLoc, "new value and pointer type do not match");
4543 if (!New->getType()->isIntegerTy())
4544 return Error(NewLoc, "cmpxchg operand must be an integer");
4545 unsigned Size = New->getType()->getPrimitiveSizeInBits();
4546 if (Size < 8 || (Size & (Size - 1)))
4547 return Error(NewLoc, "cmpxchg operand must be power-of-two byte-sized"
4550 AtomicCmpXchgInst *CXI = new AtomicCmpXchgInst(
4551 Ptr, Cmp, New, SuccessOrdering, FailureOrdering, Scope);
4552 CXI->setVolatile(isVolatile);
4553 CXI->setWeak(isWeak);
4555 return AteExtraComma ? InstExtraComma : InstNormal;
4559 /// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
4560 /// 'singlethread'? AtomicOrdering
4561 int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
4562 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
4563 bool AteExtraComma = false;
4564 AtomicOrdering Ordering = NotAtomic;
4565 SynchronizationScope Scope = CrossThread;
4566 bool isVolatile = false;
4567 AtomicRMWInst::BinOp Operation;
4569 if (EatIfPresent(lltok::kw_volatile))
4572 switch (Lex.getKind()) {
4573 default: return TokError("expected binary operation in atomicrmw");
4574 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
4575 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
4576 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
4577 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
4578 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
4579 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
4580 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
4581 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
4582 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
4583 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
4584 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
4586 Lex.Lex(); // Eat the operation.
4588 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4589 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
4590 ParseTypeAndValue(Val, ValLoc, PFS) ||
4591 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4594 if (Ordering == Unordered)
4595 return TokError("atomicrmw cannot be unordered");
4596 if (!Ptr->getType()->isPointerTy())
4597 return Error(PtrLoc, "atomicrmw operand must be a pointer");
4598 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
4599 return Error(ValLoc, "atomicrmw value and pointer type do not match");
4600 if (!Val->getType()->isIntegerTy())
4601 return Error(ValLoc, "atomicrmw operand must be an integer");
4602 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
4603 if (Size < 8 || (Size & (Size - 1)))
4604 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
4607 AtomicRMWInst *RMWI =
4608 new AtomicRMWInst(Operation, Ptr, Val, Ordering, Scope);
4609 RMWI->setVolatile(isVolatile);
4611 return AteExtraComma ? InstExtraComma : InstNormal;
4615 /// ::= 'fence' 'singlethread'? AtomicOrdering
4616 int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
4617 AtomicOrdering Ordering = NotAtomic;
4618 SynchronizationScope Scope = CrossThread;
4619 if (ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4622 if (Ordering == Unordered)
4623 return TokError("fence cannot be unordered");
4624 if (Ordering == Monotonic)
4625 return TokError("fence cannot be monotonic");
4627 Inst = new FenceInst(Context, Ordering, Scope);
4631 /// ParseGetElementPtr
4632 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
4633 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
4634 Value *Ptr = nullptr;
4635 Value *Val = nullptr;
4638 bool InBounds = EatIfPresent(lltok::kw_inbounds);
4640 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
4642 Type *BaseType = Ptr->getType();
4643 PointerType *BasePointerType = dyn_cast<PointerType>(BaseType->getScalarType());
4644 if (!BasePointerType)
4645 return Error(Loc, "base of getelementptr must be a pointer");
4647 SmallVector<Value*, 16> Indices;
4648 bool AteExtraComma = false;
4649 while (EatIfPresent(lltok::comma)) {
4650 if (Lex.getKind() == lltok::MetadataVar) {
4651 AteExtraComma = true;
4654 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
4655 if (!Val->getType()->getScalarType()->isIntegerTy())
4656 return Error(EltLoc, "getelementptr index must be an integer");
4657 if (Val->getType()->isVectorTy() != Ptr->getType()->isVectorTy())
4658 return Error(EltLoc, "getelementptr index type missmatch");
4659 if (Val->getType()->isVectorTy()) {
4660 unsigned ValNumEl = cast<VectorType>(Val->getType())->getNumElements();
4661 unsigned PtrNumEl = cast<VectorType>(Ptr->getType())->getNumElements();
4662 if (ValNumEl != PtrNumEl)
4663 return Error(EltLoc,
4664 "getelementptr vector index has a wrong number of elements");
4666 Indices.push_back(Val);
4669 if (!Indices.empty() && !BasePointerType->getElementType()->isSized())
4670 return Error(Loc, "base element of getelementptr must be sized");
4672 if (!GetElementPtrInst::getIndexedType(BaseType, Indices))
4673 return Error(Loc, "invalid getelementptr indices");
4674 Inst = GetElementPtrInst::Create(Ptr, Indices);
4676 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
4677 return AteExtraComma ? InstExtraComma : InstNormal;
4680 /// ParseExtractValue
4681 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
4682 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
4683 Value *Val; LocTy Loc;
4684 SmallVector<unsigned, 4> Indices;
4686 if (ParseTypeAndValue(Val, Loc, PFS) ||
4687 ParseIndexList(Indices, AteExtraComma))
4690 if (!Val->getType()->isAggregateType())
4691 return Error(Loc, "extractvalue operand must be aggregate type");
4693 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
4694 return Error(Loc, "invalid indices for extractvalue");
4695 Inst = ExtractValueInst::Create(Val, Indices);
4696 return AteExtraComma ? InstExtraComma : InstNormal;
4699 /// ParseInsertValue
4700 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
4701 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
4702 Value *Val0, *Val1; LocTy Loc0, Loc1;
4703 SmallVector<unsigned, 4> Indices;
4705 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
4706 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
4707 ParseTypeAndValue(Val1, Loc1, PFS) ||
4708 ParseIndexList(Indices, AteExtraComma))
4711 if (!Val0->getType()->isAggregateType())
4712 return Error(Loc0, "insertvalue operand must be aggregate type");
4714 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
4715 return Error(Loc0, "invalid indices for insertvalue");
4716 Inst = InsertValueInst::Create(Val0, Val1, Indices);
4717 return AteExtraComma ? InstExtraComma : InstNormal;
4720 //===----------------------------------------------------------------------===//
4721 // Embedded metadata.
4722 //===----------------------------------------------------------------------===//
4724 /// ParseMDNodeVector
4725 /// ::= { Element (',' Element)* }
4727 /// ::= 'null' | TypeAndValue
4728 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Metadata *> &Elts) {
4729 if (ParseToken(lltok::lbrace, "expected '{' here"))
4732 // Check for an empty list.
4733 if (EatIfPresent(lltok::rbrace))
4737 // Null is a special case since it is typeless.
4738 if (EatIfPresent(lltok::kw_null)) {
4739 Elts.push_back(nullptr);
4744 if (ParseMetadata(MD, nullptr))
4747 } while (EatIfPresent(lltok::comma));
4749 return ParseToken(lltok::rbrace, "expected end of metadata node");
4752 //===----------------------------------------------------------------------===//
4753 // Use-list order directives.
4754 //===----------------------------------------------------------------------===//
4755 bool LLParser::sortUseListOrder(Value *V, ArrayRef<unsigned> Indexes,
4758 return Error(Loc, "value has no uses");
4760 unsigned NumUses = 0;
4761 SmallDenseMap<const Use *, unsigned, 16> Order;
4762 for (const Use &U : V->uses()) {
4763 if (++NumUses > Indexes.size())
4765 Order[&U] = Indexes[NumUses - 1];
4768 return Error(Loc, "value only has one use");
4769 if (Order.size() != Indexes.size() || NumUses > Indexes.size())
4770 return Error(Loc, "wrong number of indexes, expected " +
4771 Twine(std::distance(V->use_begin(), V->use_end())));
4773 V->sortUseList([&](const Use &L, const Use &R) {
4774 return Order.lookup(&L) < Order.lookup(&R);
4779 /// ParseUseListOrderIndexes
4780 /// ::= '{' uint32 (',' uint32)+ '}'
4781 bool LLParser::ParseUseListOrderIndexes(SmallVectorImpl<unsigned> &Indexes) {
4782 SMLoc Loc = Lex.getLoc();
4783 if (ParseToken(lltok::lbrace, "expected '{' here"))
4785 if (Lex.getKind() == lltok::rbrace)
4786 return Lex.Error("expected non-empty list of uselistorder indexes");
4788 // Use Offset, Max, and IsOrdered to check consistency of indexes. The
4789 // indexes should be distinct numbers in the range [0, size-1], and should
4791 unsigned Offset = 0;
4793 bool IsOrdered = true;
4794 assert(Indexes.empty() && "Expected empty order vector");
4797 if (ParseUInt32(Index))
4800 // Update consistency checks.
4801 Offset += Index - Indexes.size();
4802 Max = std::max(Max, Index);
4803 IsOrdered &= Index == Indexes.size();
4805 Indexes.push_back(Index);
4806 } while (EatIfPresent(lltok::comma));
4808 if (ParseToken(lltok::rbrace, "expected '}' here"))
4811 if (Indexes.size() < 2)
4812 return Error(Loc, "expected >= 2 uselistorder indexes");
4813 if (Offset != 0 || Max >= Indexes.size())
4814 return Error(Loc, "expected distinct uselistorder indexes in range [0, size)");
4816 return Error(Loc, "expected uselistorder indexes to change the order");
4821 /// ParseUseListOrder
4822 /// ::= 'uselistorder' Type Value ',' UseListOrderIndexes
4823 bool LLParser::ParseUseListOrder(PerFunctionState *PFS) {
4824 SMLoc Loc = Lex.getLoc();
4825 if (ParseToken(lltok::kw_uselistorder, "expected uselistorder directive"))
4829 SmallVector<unsigned, 16> Indexes;
4830 if (ParseTypeAndValue(V, PFS) ||
4831 ParseToken(lltok::comma, "expected comma in uselistorder directive") ||
4832 ParseUseListOrderIndexes(Indexes))
4835 return sortUseListOrder(V, Indexes, Loc);
4838 /// ParseUseListOrderBB
4839 /// ::= 'uselistorder_bb' @foo ',' %bar ',' UseListOrderIndexes
4840 bool LLParser::ParseUseListOrderBB() {
4841 assert(Lex.getKind() == lltok::kw_uselistorder_bb);
4842 SMLoc Loc = Lex.getLoc();
4846 SmallVector<unsigned, 16> Indexes;
4847 if (ParseValID(Fn) ||
4848 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
4849 ParseValID(Label) ||
4850 ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
4851 ParseUseListOrderIndexes(Indexes))
4854 // Check the function.
4856 if (Fn.Kind == ValID::t_GlobalName)
4857 GV = M->getNamedValue(Fn.StrVal);
4858 else if (Fn.Kind == ValID::t_GlobalID)
4859 GV = Fn.UIntVal < NumberedVals.size() ? NumberedVals[Fn.UIntVal] : nullptr;
4861 return Error(Fn.Loc, "expected function name in uselistorder_bb");
4863 return Error(Fn.Loc, "invalid function forward reference in uselistorder_bb");
4864 auto *F = dyn_cast<Function>(GV);
4866 return Error(Fn.Loc, "expected function name in uselistorder_bb");
4867 if (F->isDeclaration())
4868 return Error(Fn.Loc, "invalid declaration in uselistorder_bb");
4870 // Check the basic block.
4871 if (Label.Kind == ValID::t_LocalID)
4872 return Error(Label.Loc, "invalid numeric label in uselistorder_bb");
4873 if (Label.Kind != ValID::t_LocalName)
4874 return Error(Label.Loc, "expected basic block name in uselistorder_bb");
4875 Value *V = F->getValueSymbolTable().lookup(Label.StrVal);
4877 return Error(Label.Loc, "invalid basic block in uselistorder_bb");
4878 if (!isa<BasicBlock>(V))
4879 return Error(Label.Loc, "expected basic block in uselistorder_bb");
4881 return sortUseListOrder(V, Indexes, Loc);