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/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/Module.h"
23 #include "llvm/IR/Operator.h"
24 #include "llvm/IR/ValueSymbolTable.h"
25 #include "llvm/Support/ErrorHandling.h"
26 #include "llvm/Support/raw_ostream.h"
29 static std::string getTypeString(Type *T) {
31 raw_string_ostream Tmp(Result);
36 /// Run: module ::= toplevelentity*
37 bool LLParser::Run() {
41 return ParseTopLevelEntities() ||
42 ValidateEndOfModule();
45 /// ValidateEndOfModule - Do final validity and sanity checks at the end of the
47 bool LLParser::ValidateEndOfModule() {
48 // Handle any instruction metadata forward references.
49 if (!ForwardRefInstMetadata.empty()) {
50 for (DenseMap<Instruction*, std::vector<MDRef> >::iterator
51 I = ForwardRefInstMetadata.begin(), E = ForwardRefInstMetadata.end();
53 Instruction *Inst = I->first;
54 const std::vector<MDRef> &MDList = I->second;
56 for (unsigned i = 0, e = MDList.size(); i != e; ++i) {
57 unsigned SlotNo = MDList[i].MDSlot;
59 if (SlotNo >= NumberedMetadata.size() || NumberedMetadata[SlotNo] == 0)
60 return Error(MDList[i].Loc, "use of undefined metadata '!" +
62 Inst->setMetadata(MDList[i].MDKind, NumberedMetadata[SlotNo]);
65 ForwardRefInstMetadata.clear();
69 // If there are entries in ForwardRefBlockAddresses at this point, they are
70 // references after the function was defined. Resolve those now.
71 while (!ForwardRefBlockAddresses.empty()) {
72 // Okay, we are referencing an already-parsed function, resolve them now.
74 const ValID &Fn = ForwardRefBlockAddresses.begin()->first;
75 if (Fn.Kind == ValID::t_GlobalName)
76 TheFn = M->getFunction(Fn.StrVal);
77 else if (Fn.UIntVal < NumberedVals.size())
78 TheFn = dyn_cast<Function>(NumberedVals[Fn.UIntVal]);
81 return Error(Fn.Loc, "unknown function referenced by blockaddress");
83 // Resolve all these references.
84 if (ResolveForwardRefBlockAddresses(TheFn,
85 ForwardRefBlockAddresses.begin()->second,
89 ForwardRefBlockAddresses.erase(ForwardRefBlockAddresses.begin());
92 for (unsigned i = 0, e = NumberedTypes.size(); i != e; ++i)
93 if (NumberedTypes[i].second.isValid())
94 return Error(NumberedTypes[i].second,
95 "use of undefined type '%" + Twine(i) + "'");
97 for (StringMap<std::pair<Type*, LocTy> >::iterator I =
98 NamedTypes.begin(), E = NamedTypes.end(); I != E; ++I)
99 if (I->second.second.isValid())
100 return Error(I->second.second,
101 "use of undefined type named '" + I->getKey() + "'");
103 if (!ForwardRefVals.empty())
104 return Error(ForwardRefVals.begin()->second.second,
105 "use of undefined value '@" + ForwardRefVals.begin()->first +
108 if (!ForwardRefValIDs.empty())
109 return Error(ForwardRefValIDs.begin()->second.second,
110 "use of undefined value '@" +
111 Twine(ForwardRefValIDs.begin()->first) + "'");
113 if (!ForwardRefMDNodes.empty())
114 return Error(ForwardRefMDNodes.begin()->second.second,
115 "use of undefined metadata '!" +
116 Twine(ForwardRefMDNodes.begin()->first) + "'");
119 // Look for intrinsic functions and CallInst that need to be upgraded
120 for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; )
121 UpgradeCallsToIntrinsic(FI++); // must be post-increment, as we remove
126 bool LLParser::ResolveForwardRefBlockAddresses(Function *TheFn,
127 std::vector<std::pair<ValID, GlobalValue*> > &Refs,
128 PerFunctionState *PFS) {
129 // Loop over all the references, resolving them.
130 for (unsigned i = 0, e = Refs.size(); i != e; ++i) {
133 if (Refs[i].first.Kind == ValID::t_LocalName)
134 Res = PFS->GetBB(Refs[i].first.StrVal, Refs[i].first.Loc);
136 Res = PFS->GetBB(Refs[i].first.UIntVal, Refs[i].first.Loc);
137 } else if (Refs[i].first.Kind == ValID::t_LocalID) {
138 return Error(Refs[i].first.Loc,
139 "cannot take address of numeric label after the function is defined");
141 Res = dyn_cast_or_null<BasicBlock>(
142 TheFn->getValueSymbolTable().lookup(Refs[i].first.StrVal));
146 return Error(Refs[i].first.Loc,
147 "referenced value is not a basic block");
149 // Get the BlockAddress for this and update references to use it.
150 BlockAddress *BA = BlockAddress::get(TheFn, Res);
151 Refs[i].second->replaceAllUsesWith(BA);
152 Refs[i].second->eraseFromParent();
158 //===----------------------------------------------------------------------===//
159 // Top-Level Entities
160 //===----------------------------------------------------------------------===//
162 bool LLParser::ParseTopLevelEntities() {
164 switch (Lex.getKind()) {
165 default: return TokError("expected top-level entity");
166 case lltok::Eof: return false;
167 case lltok::kw_declare: if (ParseDeclare()) return true; break;
168 case lltok::kw_define: if (ParseDefine()) return true; break;
169 case lltok::kw_module: if (ParseModuleAsm()) return true; break;
170 case lltok::kw_target: if (ParseTargetDefinition()) return true; break;
171 case lltok::kw_deplibs: if (ParseDepLibs()) return true; break;
172 case lltok::LocalVarID: if (ParseUnnamedType()) return true; break;
173 case lltok::LocalVar: if (ParseNamedType()) return true; break;
174 case lltok::GlobalID: if (ParseUnnamedGlobal()) return true; break;
175 case lltok::GlobalVar: if (ParseNamedGlobal()) return true; break;
176 case lltok::exclaim: if (ParseStandaloneMetadata()) return true; break;
177 case lltok::MetadataVar: if (ParseNamedMetadata()) return true; break;
179 // The Global variable production with no name can have many different
180 // optional leading prefixes, the production is:
181 // GlobalVar ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
182 // OptionalAddrSpace OptionalUnNammedAddr
183 // ('constant'|'global') ...
184 case lltok::kw_private: // OptionalLinkage
185 case lltok::kw_linker_private: // OptionalLinkage
186 case lltok::kw_linker_private_weak: // OptionalLinkage
187 case lltok::kw_linker_private_weak_def_auto: // FIXME: backwards compat.
188 case lltok::kw_internal: // OptionalLinkage
189 case lltok::kw_weak: // OptionalLinkage
190 case lltok::kw_weak_odr: // OptionalLinkage
191 case lltok::kw_linkonce: // OptionalLinkage
192 case lltok::kw_linkonce_odr: // OptionalLinkage
193 case lltok::kw_linkonce_odr_auto_hide: // OptionalLinkage
194 case lltok::kw_appending: // OptionalLinkage
195 case lltok::kw_dllexport: // OptionalLinkage
196 case lltok::kw_common: // OptionalLinkage
197 case lltok::kw_dllimport: // OptionalLinkage
198 case lltok::kw_extern_weak: // OptionalLinkage
199 case lltok::kw_external: { // OptionalLinkage
200 unsigned Linkage, Visibility;
201 if (ParseOptionalLinkage(Linkage) ||
202 ParseOptionalVisibility(Visibility) ||
203 ParseGlobal("", SMLoc(), Linkage, true, Visibility))
207 case lltok::kw_default: // OptionalVisibility
208 case lltok::kw_hidden: // OptionalVisibility
209 case lltok::kw_protected: { // OptionalVisibility
211 if (ParseOptionalVisibility(Visibility) ||
212 ParseGlobal("", SMLoc(), 0, false, Visibility))
217 case lltok::kw_thread_local: // OptionalThreadLocal
218 case lltok::kw_addrspace: // OptionalAddrSpace
219 case lltok::kw_constant: // GlobalType
220 case lltok::kw_global: // GlobalType
221 if (ParseGlobal("", SMLoc(), 0, false, 0)) return true;
229 /// ::= 'module' 'asm' STRINGCONSTANT
230 bool LLParser::ParseModuleAsm() {
231 assert(Lex.getKind() == lltok::kw_module);
235 if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
236 ParseStringConstant(AsmStr)) return true;
238 M->appendModuleInlineAsm(AsmStr);
243 /// ::= 'target' 'triple' '=' STRINGCONSTANT
244 /// ::= 'target' 'datalayout' '=' STRINGCONSTANT
245 bool LLParser::ParseTargetDefinition() {
246 assert(Lex.getKind() == lltok::kw_target);
249 default: return TokError("unknown target property");
250 case lltok::kw_triple:
252 if (ParseToken(lltok::equal, "expected '=' after target triple") ||
253 ParseStringConstant(Str))
255 M->setTargetTriple(Str);
257 case lltok::kw_datalayout:
259 if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
260 ParseStringConstant(Str))
262 M->setDataLayout(Str);
268 /// ::= 'deplibs' '=' '[' ']'
269 /// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
270 /// FIXME: Remove in 4.0. Currently parse, but ignore.
271 bool LLParser::ParseDepLibs() {
272 assert(Lex.getKind() == lltok::kw_deplibs);
274 if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
275 ParseToken(lltok::lsquare, "expected '=' after deplibs"))
278 if (EatIfPresent(lltok::rsquare))
283 if (ParseStringConstant(Str)) return true;
284 } while (EatIfPresent(lltok::comma));
286 return ParseToken(lltok::rsquare, "expected ']' at end of list");
289 /// ParseUnnamedType:
290 /// ::= LocalVarID '=' 'type' type
291 bool LLParser::ParseUnnamedType() {
292 LocTy TypeLoc = Lex.getLoc();
293 unsigned TypeID = Lex.getUIntVal();
294 Lex.Lex(); // eat LocalVarID;
296 if (ParseToken(lltok::equal, "expected '=' after name") ||
297 ParseToken(lltok::kw_type, "expected 'type' after '='"))
300 if (TypeID >= NumberedTypes.size())
301 NumberedTypes.resize(TypeID+1);
304 if (ParseStructDefinition(TypeLoc, "",
305 NumberedTypes[TypeID], Result)) return true;
307 if (!isa<StructType>(Result)) {
308 std::pair<Type*, LocTy> &Entry = NumberedTypes[TypeID];
310 return Error(TypeLoc, "non-struct types may not be recursive");
311 Entry.first = Result;
312 Entry.second = SMLoc();
320 /// ::= LocalVar '=' 'type' type
321 bool LLParser::ParseNamedType() {
322 std::string Name = Lex.getStrVal();
323 LocTy NameLoc = Lex.getLoc();
324 Lex.Lex(); // eat LocalVar.
326 if (ParseToken(lltok::equal, "expected '=' after name") ||
327 ParseToken(lltok::kw_type, "expected 'type' after name"))
331 if (ParseStructDefinition(NameLoc, Name,
332 NamedTypes[Name], Result)) return true;
334 if (!isa<StructType>(Result)) {
335 std::pair<Type*, LocTy> &Entry = NamedTypes[Name];
337 return Error(NameLoc, "non-struct types may not be recursive");
338 Entry.first = Result;
339 Entry.second = SMLoc();
347 /// ::= 'declare' FunctionHeader
348 bool LLParser::ParseDeclare() {
349 assert(Lex.getKind() == lltok::kw_declare);
353 return ParseFunctionHeader(F, false);
357 /// ::= 'define' FunctionHeader '{' ...
358 bool LLParser::ParseDefine() {
359 assert(Lex.getKind() == lltok::kw_define);
363 return ParseFunctionHeader(F, true) ||
364 ParseFunctionBody(*F);
370 bool LLParser::ParseGlobalType(bool &IsConstant) {
371 if (Lex.getKind() == lltok::kw_constant)
373 else if (Lex.getKind() == lltok::kw_global)
377 return TokError("expected 'global' or 'constant'");
383 /// ParseUnnamedGlobal:
384 /// OptionalVisibility ALIAS ...
385 /// OptionalLinkage OptionalVisibility ... -> global variable
386 /// GlobalID '=' OptionalVisibility ALIAS ...
387 /// GlobalID '=' OptionalLinkage OptionalVisibility ... -> global variable
388 bool LLParser::ParseUnnamedGlobal() {
389 unsigned VarID = NumberedVals.size();
391 LocTy NameLoc = Lex.getLoc();
393 // Handle the GlobalID form.
394 if (Lex.getKind() == lltok::GlobalID) {
395 if (Lex.getUIntVal() != VarID)
396 return Error(Lex.getLoc(), "variable expected to be numbered '%" +
398 Lex.Lex(); // eat GlobalID;
400 if (ParseToken(lltok::equal, "expected '=' after name"))
405 unsigned Linkage, Visibility;
406 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
407 ParseOptionalVisibility(Visibility))
410 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
411 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
412 return ParseAlias(Name, NameLoc, Visibility);
415 /// ParseNamedGlobal:
416 /// GlobalVar '=' OptionalVisibility ALIAS ...
417 /// GlobalVar '=' OptionalLinkage OptionalVisibility ... -> global variable
418 bool LLParser::ParseNamedGlobal() {
419 assert(Lex.getKind() == lltok::GlobalVar);
420 LocTy NameLoc = Lex.getLoc();
421 std::string Name = Lex.getStrVal();
425 unsigned Linkage, Visibility;
426 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
427 ParseOptionalLinkage(Linkage, HasLinkage) ||
428 ParseOptionalVisibility(Visibility))
431 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
432 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
433 return ParseAlias(Name, NameLoc, Visibility);
437 // ::= '!' STRINGCONSTANT
438 bool LLParser::ParseMDString(MDString *&Result) {
440 if (ParseStringConstant(Str)) return true;
441 Result = MDString::get(Context, Str);
446 // ::= '!' MDNodeNumber
448 /// This version of ParseMDNodeID returns the slot number and null in the case
449 /// of a forward reference.
450 bool LLParser::ParseMDNodeID(MDNode *&Result, unsigned &SlotNo) {
451 // !{ ..., !42, ... }
452 if (ParseUInt32(SlotNo)) return true;
454 // Check existing MDNode.
455 if (SlotNo < NumberedMetadata.size() && NumberedMetadata[SlotNo] != 0)
456 Result = NumberedMetadata[SlotNo];
462 bool LLParser::ParseMDNodeID(MDNode *&Result) {
463 // !{ ..., !42, ... }
465 if (ParseMDNodeID(Result, MID)) return true;
467 // If not a forward reference, just return it now.
468 if (Result) return false;
470 // Otherwise, create MDNode forward reference.
471 MDNode *FwdNode = MDNode::getTemporary(Context, ArrayRef<Value*>());
472 ForwardRefMDNodes[MID] = std::make_pair(FwdNode, Lex.getLoc());
474 if (NumberedMetadata.size() <= MID)
475 NumberedMetadata.resize(MID+1);
476 NumberedMetadata[MID] = FwdNode;
481 /// ParseNamedMetadata:
482 /// !foo = !{ !1, !2 }
483 bool LLParser::ParseNamedMetadata() {
484 assert(Lex.getKind() == lltok::MetadataVar);
485 std::string Name = Lex.getStrVal();
488 if (ParseToken(lltok::equal, "expected '=' here") ||
489 ParseToken(lltok::exclaim, "Expected '!' here") ||
490 ParseToken(lltok::lbrace, "Expected '{' here"))
493 NamedMDNode *NMD = M->getOrInsertNamedMetadata(Name);
494 if (Lex.getKind() != lltok::rbrace)
496 if (ParseToken(lltok::exclaim, "Expected '!' here"))
500 if (ParseMDNodeID(N)) return true;
502 } while (EatIfPresent(lltok::comma));
504 if (ParseToken(lltok::rbrace, "expected end of metadata node"))
510 /// ParseStandaloneMetadata:
512 bool LLParser::ParseStandaloneMetadata() {
513 assert(Lex.getKind() == lltok::exclaim);
515 unsigned MetadataID = 0;
519 SmallVector<Value *, 16> Elts;
520 if (ParseUInt32(MetadataID) ||
521 ParseToken(lltok::equal, "expected '=' here") ||
522 ParseType(Ty, TyLoc) ||
523 ParseToken(lltok::exclaim, "Expected '!' here") ||
524 ParseToken(lltok::lbrace, "Expected '{' here") ||
525 ParseMDNodeVector(Elts, NULL) ||
526 ParseToken(lltok::rbrace, "expected end of metadata node"))
529 MDNode *Init = MDNode::get(Context, Elts);
531 // See if this was forward referenced, if so, handle it.
532 std::map<unsigned, std::pair<TrackingVH<MDNode>, LocTy> >::iterator
533 FI = ForwardRefMDNodes.find(MetadataID);
534 if (FI != ForwardRefMDNodes.end()) {
535 MDNode *Temp = FI->second.first;
536 Temp->replaceAllUsesWith(Init);
537 MDNode::deleteTemporary(Temp);
538 ForwardRefMDNodes.erase(FI);
540 assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work");
542 if (MetadataID >= NumberedMetadata.size())
543 NumberedMetadata.resize(MetadataID+1);
545 if (NumberedMetadata[MetadataID] != 0)
546 return TokError("Metadata id is already used");
547 NumberedMetadata[MetadataID] = Init;
554 /// ::= GlobalVar '=' OptionalVisibility 'alias' OptionalLinkage Aliasee
557 /// ::= 'bitcast' '(' TypeAndValue 'to' Type ')'
558 /// ::= 'getelementptr' 'inbounds'? '(' ... ')'
560 /// Everything through visibility has already been parsed.
562 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc,
563 unsigned Visibility) {
564 assert(Lex.getKind() == lltok::kw_alias);
567 LocTy LinkageLoc = Lex.getLoc();
568 if (ParseOptionalLinkage(Linkage))
571 if (Linkage != GlobalValue::ExternalLinkage &&
572 Linkage != GlobalValue::WeakAnyLinkage &&
573 Linkage != GlobalValue::WeakODRLinkage &&
574 Linkage != GlobalValue::InternalLinkage &&
575 Linkage != GlobalValue::PrivateLinkage &&
576 Linkage != GlobalValue::LinkerPrivateLinkage &&
577 Linkage != GlobalValue::LinkerPrivateWeakLinkage)
578 return Error(LinkageLoc, "invalid linkage type for alias");
581 LocTy AliaseeLoc = Lex.getLoc();
582 if (Lex.getKind() != lltok::kw_bitcast &&
583 Lex.getKind() != lltok::kw_getelementptr) {
584 if (ParseGlobalTypeAndValue(Aliasee)) return true;
586 // The bitcast dest type is not present, it is implied by the dest type.
588 if (ParseValID(ID)) return true;
589 if (ID.Kind != ValID::t_Constant)
590 return Error(AliaseeLoc, "invalid aliasee");
591 Aliasee = ID.ConstantVal;
594 if (!Aliasee->getType()->isPointerTy())
595 return Error(AliaseeLoc, "alias must have pointer type");
597 // Okay, create the alias but do not insert it into the module yet.
598 GlobalAlias* GA = new GlobalAlias(Aliasee->getType(),
599 (GlobalValue::LinkageTypes)Linkage, Name,
601 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
603 // See if this value already exists in the symbol table. If so, it is either
604 // a redefinition or a definition of a forward reference.
605 if (GlobalValue *Val = M->getNamedValue(Name)) {
606 // See if this was a redefinition. If so, there is no entry in
608 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
609 I = ForwardRefVals.find(Name);
610 if (I == ForwardRefVals.end())
611 return Error(NameLoc, "redefinition of global named '@" + Name + "'");
613 // Otherwise, this was a definition of forward ref. Verify that types
615 if (Val->getType() != GA->getType())
616 return Error(NameLoc,
617 "forward reference and definition of alias have different types");
619 // If they agree, just RAUW the old value with the alias and remove the
621 Val->replaceAllUsesWith(GA);
622 Val->eraseFromParent();
623 ForwardRefVals.erase(I);
626 // Insert into the module, we know its name won't collide now.
627 M->getAliasList().push_back(GA);
628 assert(GA->getName() == Name && "Should not be a name conflict!");
634 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalThreadLocal
635 /// OptionalAddrSpace OptionalUnNammedAddr GlobalType Type Const
636 /// ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
637 /// OptionalAddrSpace OptionalUnNammedAddr GlobalType Type Const
639 /// Everything through visibility has been parsed already.
641 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
642 unsigned Linkage, bool HasLinkage,
643 unsigned Visibility) {
645 bool IsConstant, UnnamedAddr;
646 GlobalVariable::ThreadLocalMode TLM;
647 LocTy UnnamedAddrLoc;
651 if (ParseOptionalThreadLocal(TLM) ||
652 ParseOptionalAddrSpace(AddrSpace) ||
653 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
655 ParseGlobalType(IsConstant) ||
656 ParseType(Ty, TyLoc))
659 // If the linkage is specified and is external, then no initializer is
662 if (!HasLinkage || (Linkage != GlobalValue::DLLImportLinkage &&
663 Linkage != GlobalValue::ExternalWeakLinkage &&
664 Linkage != GlobalValue::ExternalLinkage)) {
665 if (ParseGlobalValue(Ty, Init))
669 if (Ty->isFunctionTy() || Ty->isLabelTy())
670 return Error(TyLoc, "invalid type for global variable");
672 GlobalVariable *GV = 0;
674 // See if the global was forward referenced, if so, use the global.
676 if (GlobalValue *GVal = M->getNamedValue(Name)) {
677 if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
678 return Error(NameLoc, "redefinition of global '@" + Name + "'");
679 GV = cast<GlobalVariable>(GVal);
682 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
683 I = ForwardRefValIDs.find(NumberedVals.size());
684 if (I != ForwardRefValIDs.end()) {
685 GV = cast<GlobalVariable>(I->second.first);
686 ForwardRefValIDs.erase(I);
691 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, 0,
692 Name, 0, GlobalVariable::NotThreadLocal,
695 if (GV->getType()->getElementType() != Ty)
697 "forward reference and definition of global have different types");
699 // Move the forward-reference to the correct spot in the module.
700 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
704 NumberedVals.push_back(GV);
706 // Set the parsed properties on the global.
708 GV->setInitializer(Init);
709 GV->setConstant(IsConstant);
710 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
711 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
712 GV->setThreadLocalMode(TLM);
713 GV->setUnnamedAddr(UnnamedAddr);
715 // Parse attributes on the global.
716 while (Lex.getKind() == lltok::comma) {
719 if (Lex.getKind() == lltok::kw_section) {
721 GV->setSection(Lex.getStrVal());
722 if (ParseToken(lltok::StringConstant, "expected global section string"))
724 } else if (Lex.getKind() == lltok::kw_align) {
726 if (ParseOptionalAlignment(Alignment)) return true;
727 GV->setAlignment(Alignment);
729 TokError("unknown global variable property!");
737 //===----------------------------------------------------------------------===//
738 // GlobalValue Reference/Resolution Routines.
739 //===----------------------------------------------------------------------===//
741 /// GetGlobalVal - Get a value with the specified name or ID, creating a
742 /// forward reference record if needed. This can return null if the value
743 /// exists but does not have the right type.
744 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
746 PointerType *PTy = dyn_cast<PointerType>(Ty);
748 Error(Loc, "global variable reference must have pointer type");
752 // Look this name up in the normal function symbol table.
754 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
756 // If this is a forward reference for the value, see if we already created a
757 // forward ref record.
759 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
760 I = ForwardRefVals.find(Name);
761 if (I != ForwardRefVals.end())
762 Val = I->second.first;
765 // If we have the value in the symbol table or fwd-ref table, return it.
767 if (Val->getType() == Ty) return Val;
768 Error(Loc, "'@" + Name + "' defined with type '" +
769 getTypeString(Val->getType()) + "'");
773 // Otherwise, create a new forward reference for this value and remember it.
775 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
776 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
778 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
779 GlobalValue::ExternalWeakLinkage, 0, Name,
780 0, GlobalVariable::NotThreadLocal,
781 PTy->getAddressSpace());
783 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
787 GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
788 PointerType *PTy = dyn_cast<PointerType>(Ty);
790 Error(Loc, "global variable reference must have pointer type");
794 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
796 // If this is a forward reference for the value, see if we already created a
797 // forward ref record.
799 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
800 I = ForwardRefValIDs.find(ID);
801 if (I != ForwardRefValIDs.end())
802 Val = I->second.first;
805 // If we have the value in the symbol table or fwd-ref table, return it.
807 if (Val->getType() == Ty) return Val;
808 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
809 getTypeString(Val->getType()) + "'");
813 // Otherwise, create a new forward reference for this value and remember it.
815 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
816 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
818 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
819 GlobalValue::ExternalWeakLinkage, 0, "");
821 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
826 //===----------------------------------------------------------------------===//
828 //===----------------------------------------------------------------------===//
830 /// ParseToken - If the current token has the specified kind, eat it and return
831 /// success. Otherwise, emit the specified error and return failure.
832 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
833 if (Lex.getKind() != T)
834 return TokError(ErrMsg);
839 /// ParseStringConstant
840 /// ::= StringConstant
841 bool LLParser::ParseStringConstant(std::string &Result) {
842 if (Lex.getKind() != lltok::StringConstant)
843 return TokError("expected string constant");
844 Result = Lex.getStrVal();
851 bool LLParser::ParseUInt32(unsigned &Val) {
852 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
853 return TokError("expected integer");
854 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
855 if (Val64 != unsigned(Val64))
856 return TokError("expected 32-bit integer (too large)");
863 /// := 'localdynamic'
866 bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
867 switch (Lex.getKind()) {
869 return TokError("expected localdynamic, initialexec or localexec");
870 case lltok::kw_localdynamic:
871 TLM = GlobalVariable::LocalDynamicTLSModel;
873 case lltok::kw_initialexec:
874 TLM = GlobalVariable::InitialExecTLSModel;
876 case lltok::kw_localexec:
877 TLM = GlobalVariable::LocalExecTLSModel;
885 /// ParseOptionalThreadLocal
887 /// := 'thread_local'
888 /// := 'thread_local' '(' tlsmodel ')'
889 bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
890 TLM = GlobalVariable::NotThreadLocal;
891 if (!EatIfPresent(lltok::kw_thread_local))
894 TLM = GlobalVariable::GeneralDynamicTLSModel;
895 if (Lex.getKind() == lltok::lparen) {
897 return ParseTLSModel(TLM) ||
898 ParseToken(lltok::rparen, "expected ')' after thread local model");
903 /// ParseOptionalAddrSpace
905 /// := 'addrspace' '(' uint32 ')'
906 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
908 if (!EatIfPresent(lltok::kw_addrspace))
910 return ParseToken(lltok::lparen, "expected '(' in address space") ||
911 ParseUInt32(AddrSpace) ||
912 ParseToken(lltok::rparen, "expected ')' in address space");
915 /// ParseOptionalFuncAttrs - Parse a potentially empty list of function attributes.
916 bool LLParser::ParseOptionalFuncAttrs(AttrBuilder &B) {
917 bool HaveError = false;
922 lltok::Kind Token = Lex.getKind();
924 default: // End of attributes.
926 case lltok::kw_alignstack: {
928 if (ParseOptionalStackAlignment(Alignment))
930 B.addStackAlignmentAttr(Alignment);
933 case lltok::kw_align: {
934 // As a hack, we allow "align 2" on functions as a synonym for "alignstack
937 if (ParseOptionalAlignment(Alignment))
939 B.addAlignmentAttr(Alignment);
942 case lltok::kw_address_safety: B.addAttribute(Attribute::AddressSafety); break;
943 case lltok::kw_alwaysinline: B.addAttribute(Attribute::AlwaysInline); break;
944 case lltok::kw_inlinehint: B.addAttribute(Attribute::InlineHint); break;
945 case lltok::kw_minsize: B.addAttribute(Attribute::MinSize); break;
946 case lltok::kw_naked: B.addAttribute(Attribute::Naked); break;
947 case lltok::kw_noinline: B.addAttribute(Attribute::NoInline); break;
948 case lltok::kw_nonlazybind: B.addAttribute(Attribute::NonLazyBind); break;
949 case lltok::kw_noredzone: B.addAttribute(Attribute::NoRedZone); break;
950 case lltok::kw_noimplicitfloat: B.addAttribute(Attribute::NoImplicitFloat); break;
951 case lltok::kw_noreturn: B.addAttribute(Attribute::NoReturn); break;
952 case lltok::kw_nounwind: B.addAttribute(Attribute::NoUnwind); break;
953 case lltok::kw_optsize: B.addAttribute(Attribute::OptimizeForSize); break;
954 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
955 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
956 case lltok::kw_returns_twice: B.addAttribute(Attribute::ReturnsTwice); break;
957 case lltok::kw_ssp: B.addAttribute(Attribute::StackProtect); break;
958 case lltok::kw_sspreq: B.addAttribute(Attribute::StackProtectReq); break;
959 case lltok::kw_sspstrong: B.addAttribute(Attribute::StackProtectStrong); break;
960 case lltok::kw_uwtable: B.addAttribute(Attribute::UWTable); break;
961 case lltok::kw_noduplicate: B.addAttribute(Attribute::NoDuplicate); break;
964 case lltok::kw_zeroext:
965 case lltok::kw_signext:
966 case lltok::kw_inreg:
967 HaveError |= Error(Lex.getLoc(), "invalid use of attribute on a function");
969 case lltok::kw_sret: case lltok::kw_noalias:
970 case lltok::kw_nocapture: case lltok::kw_byval:
973 Error(Lex.getLoc(), "invalid use of parameter-only attribute on a function");
981 /// ParseOptionalParamAttrs - Parse a potentially empty list of parameter attributes.
982 bool LLParser::ParseOptionalParamAttrs(AttrBuilder &B) {
983 bool HaveError = false;
988 lltok::Kind Token = Lex.getKind();
990 default: // End of attributes.
992 case lltok::kw_align: {
994 if (ParseOptionalAlignment(Alignment))
996 B.addAlignmentAttr(Alignment);
999 case lltok::kw_byval: B.addAttribute(Attribute::ByVal); break;
1000 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1001 case lltok::kw_nest: B.addAttribute(Attribute::Nest); break;
1002 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1003 case lltok::kw_nocapture: B.addAttribute(Attribute::NoCapture); break;
1004 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1005 case lltok::kw_sret: B.addAttribute(Attribute::StructRet); break;
1006 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1008 case lltok::kw_noreturn: case lltok::kw_nounwind:
1009 case lltok::kw_uwtable: case lltok::kw_returns_twice:
1010 case lltok::kw_noinline: case lltok::kw_readnone:
1011 case lltok::kw_readonly: case lltok::kw_inlinehint:
1012 case lltok::kw_alwaysinline: case lltok::kw_optsize:
1013 case lltok::kw_ssp: case lltok::kw_sspreq:
1014 case lltok::kw_noredzone: case lltok::kw_noimplicitfloat:
1015 case lltok::kw_naked: case lltok::kw_nonlazybind:
1016 case lltok::kw_address_safety: case lltok::kw_minsize:
1017 case lltok::kw_alignstack:
1018 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1026 /// ParseOptionalReturnAttrs - Parse a potentially empty list of return attributes.
1027 bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
1028 bool HaveError = false;
1033 lltok::Kind Token = Lex.getKind();
1035 default: // End of attributes.
1037 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1038 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1039 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1040 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1043 case lltok::kw_sret: case lltok::kw_nocapture:
1044 case lltok::kw_byval: case lltok::kw_nest:
1045 HaveError |= Error(Lex.getLoc(), "invalid use of parameter-only attribute");
1048 case lltok::kw_noreturn: case lltok::kw_nounwind:
1049 case lltok::kw_uwtable: case lltok::kw_returns_twice:
1050 case lltok::kw_noinline: case lltok::kw_readnone:
1051 case lltok::kw_readonly: case lltok::kw_inlinehint:
1052 case lltok::kw_alwaysinline: case lltok::kw_optsize:
1053 case lltok::kw_ssp: case lltok::kw_sspreq:
1054 case lltok::kw_sspstrong: case lltok::kw_noimplicitfloat:
1055 case lltok::kw_noredzone: case lltok::kw_naked:
1056 case lltok::kw_nonlazybind: case lltok::kw_address_safety:
1057 case lltok::kw_minsize: case lltok::kw_alignstack:
1058 case lltok::kw_align: case lltok::kw_noduplicate:
1059 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1067 /// ParseOptionalLinkage
1070 /// ::= 'linker_private'
1071 /// ::= 'linker_private_weak'
1076 /// ::= 'linkonce_odr'
1077 /// ::= 'linkonce_odr_auto_hide'
1078 /// ::= 'available_externally'
1083 /// ::= 'extern_weak'
1085 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1087 switch (Lex.getKind()) {
1088 default: Res=GlobalValue::ExternalLinkage; return false;
1089 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1090 case lltok::kw_linker_private: Res = GlobalValue::LinkerPrivateLinkage; break;
1091 case lltok::kw_linker_private_weak:
1092 Res = GlobalValue::LinkerPrivateWeakLinkage;
1094 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1095 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1096 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1097 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1098 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1099 case lltok::kw_linkonce_odr_auto_hide:
1100 case lltok::kw_linker_private_weak_def_auto: // FIXME: For backwards compat.
1101 Res = GlobalValue::LinkOnceODRAutoHideLinkage;
1103 case lltok::kw_available_externally:
1104 Res = GlobalValue::AvailableExternallyLinkage;
1106 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1107 case lltok::kw_dllexport: Res = GlobalValue::DLLExportLinkage; break;
1108 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1109 case lltok::kw_dllimport: Res = GlobalValue::DLLImportLinkage; break;
1110 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1111 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1118 /// ParseOptionalVisibility
1124 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1125 switch (Lex.getKind()) {
1126 default: Res = GlobalValue::DefaultVisibility; return false;
1127 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1128 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1129 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1135 /// ParseOptionalCallingConv
1139 /// ::= 'kw_intel_ocl_bicc'
1141 /// ::= 'x86_stdcallcc'
1142 /// ::= 'x86_fastcallcc'
1143 /// ::= 'x86_thiscallcc'
1144 /// ::= 'arm_apcscc'
1145 /// ::= 'arm_aapcscc'
1146 /// ::= 'arm_aapcs_vfpcc'
1147 /// ::= 'msp430_intrcc'
1148 /// ::= 'ptx_kernel'
1149 /// ::= 'ptx_device'
1151 /// ::= 'spir_kernel'
1154 bool LLParser::ParseOptionalCallingConv(CallingConv::ID &CC) {
1155 switch (Lex.getKind()) {
1156 default: CC = CallingConv::C; return false;
1157 case lltok::kw_ccc: CC = CallingConv::C; break;
1158 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1159 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1160 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1161 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1162 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1163 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1164 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1165 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1166 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1167 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1168 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1169 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1170 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1171 case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1172 case lltok::kw_cc: {
1173 unsigned ArbitraryCC;
1175 if (ParseUInt32(ArbitraryCC))
1177 CC = static_cast<CallingConv::ID>(ArbitraryCC);
1186 /// ParseInstructionMetadata
1187 /// ::= !dbg !42 (',' !dbg !57)*
1188 bool LLParser::ParseInstructionMetadata(Instruction *Inst,
1189 PerFunctionState *PFS) {
1191 if (Lex.getKind() != lltok::MetadataVar)
1192 return TokError("expected metadata after comma");
1194 std::string Name = Lex.getStrVal();
1195 unsigned MDK = M->getMDKindID(Name);
1199 SMLoc Loc = Lex.getLoc();
1201 if (ParseToken(lltok::exclaim, "expected '!' here"))
1204 // This code is similar to that of ParseMetadataValue, however it needs to
1205 // have special-case code for a forward reference; see the comments on
1206 // ForwardRefInstMetadata for details. Also, MDStrings are not supported
1207 // at the top level here.
1208 if (Lex.getKind() == lltok::lbrace) {
1210 if (ParseMetadataListValue(ID, PFS))
1212 assert(ID.Kind == ValID::t_MDNode);
1213 Inst->setMetadata(MDK, ID.MDNodeVal);
1215 unsigned NodeID = 0;
1216 if (ParseMDNodeID(Node, NodeID))
1219 // If we got the node, add it to the instruction.
1220 Inst->setMetadata(MDK, Node);
1222 MDRef R = { Loc, MDK, NodeID };
1223 // Otherwise, remember that this should be resolved later.
1224 ForwardRefInstMetadata[Inst].push_back(R);
1228 // If this is the end of the list, we're done.
1229 } while (EatIfPresent(lltok::comma));
1233 /// ParseOptionalAlignment
1236 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1238 if (!EatIfPresent(lltok::kw_align))
1240 LocTy AlignLoc = Lex.getLoc();
1241 if (ParseUInt32(Alignment)) return true;
1242 if (!isPowerOf2_32(Alignment))
1243 return Error(AlignLoc, "alignment is not a power of two");
1244 if (Alignment > Value::MaximumAlignment)
1245 return Error(AlignLoc, "huge alignments are not supported yet");
1249 /// ParseOptionalCommaAlign
1253 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1255 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1256 bool &AteExtraComma) {
1257 AteExtraComma = false;
1258 while (EatIfPresent(lltok::comma)) {
1259 // Metadata at the end is an early exit.
1260 if (Lex.getKind() == lltok::MetadataVar) {
1261 AteExtraComma = true;
1265 if (Lex.getKind() != lltok::kw_align)
1266 return Error(Lex.getLoc(), "expected metadata or 'align'");
1268 if (ParseOptionalAlignment(Alignment)) return true;
1274 /// ParseScopeAndOrdering
1275 /// if isAtomic: ::= 'singlethread'? AtomicOrdering
1278 /// This sets Scope and Ordering to the parsed values.
1279 bool LLParser::ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope,
1280 AtomicOrdering &Ordering) {
1284 Scope = CrossThread;
1285 if (EatIfPresent(lltok::kw_singlethread))
1286 Scope = SingleThread;
1287 switch (Lex.getKind()) {
1288 default: return TokError("Expected ordering on atomic instruction");
1289 case lltok::kw_unordered: Ordering = Unordered; break;
1290 case lltok::kw_monotonic: Ordering = Monotonic; break;
1291 case lltok::kw_acquire: Ordering = Acquire; break;
1292 case lltok::kw_release: Ordering = Release; break;
1293 case lltok::kw_acq_rel: Ordering = AcquireRelease; break;
1294 case lltok::kw_seq_cst: Ordering = SequentiallyConsistent; break;
1300 /// ParseOptionalStackAlignment
1302 /// ::= 'alignstack' '(' 4 ')'
1303 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1305 if (!EatIfPresent(lltok::kw_alignstack))
1307 LocTy ParenLoc = Lex.getLoc();
1308 if (!EatIfPresent(lltok::lparen))
1309 return Error(ParenLoc, "expected '('");
1310 LocTy AlignLoc = Lex.getLoc();
1311 if (ParseUInt32(Alignment)) return true;
1312 ParenLoc = Lex.getLoc();
1313 if (!EatIfPresent(lltok::rparen))
1314 return Error(ParenLoc, "expected ')'");
1315 if (!isPowerOf2_32(Alignment))
1316 return Error(AlignLoc, "stack alignment is not a power of two");
1320 /// ParseIndexList - This parses the index list for an insert/extractvalue
1321 /// instruction. This sets AteExtraComma in the case where we eat an extra
1322 /// comma at the end of the line and find that it is followed by metadata.
1323 /// Clients that don't allow metadata can call the version of this function that
1324 /// only takes one argument.
1327 /// ::= (',' uint32)+
1329 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1330 bool &AteExtraComma) {
1331 AteExtraComma = false;
1333 if (Lex.getKind() != lltok::comma)
1334 return TokError("expected ',' as start of index list");
1336 while (EatIfPresent(lltok::comma)) {
1337 if (Lex.getKind() == lltok::MetadataVar) {
1338 AteExtraComma = true;
1342 if (ParseUInt32(Idx)) return true;
1343 Indices.push_back(Idx);
1349 //===----------------------------------------------------------------------===//
1351 //===----------------------------------------------------------------------===//
1353 /// ParseType - Parse a type.
1354 bool LLParser::ParseType(Type *&Result, bool AllowVoid) {
1355 SMLoc TypeLoc = Lex.getLoc();
1356 switch (Lex.getKind()) {
1358 return TokError("expected type");
1360 // Type ::= 'float' | 'void' (etc)
1361 Result = Lex.getTyVal();
1365 // Type ::= StructType
1366 if (ParseAnonStructType(Result, false))
1369 case lltok::lsquare:
1370 // Type ::= '[' ... ']'
1371 Lex.Lex(); // eat the lsquare.
1372 if (ParseArrayVectorType(Result, false))
1375 case lltok::less: // Either vector or packed struct.
1376 // Type ::= '<' ... '>'
1378 if (Lex.getKind() == lltok::lbrace) {
1379 if (ParseAnonStructType(Result, true) ||
1380 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1382 } else if (ParseArrayVectorType(Result, true))
1385 case lltok::LocalVar: {
1387 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
1389 // If the type hasn't been defined yet, create a forward definition and
1390 // remember where that forward def'n was seen (in case it never is defined).
1391 if (Entry.first == 0) {
1392 Entry.first = StructType::create(Context, Lex.getStrVal());
1393 Entry.second = Lex.getLoc();
1395 Result = Entry.first;
1400 case lltok::LocalVarID: {
1402 if (Lex.getUIntVal() >= NumberedTypes.size())
1403 NumberedTypes.resize(Lex.getUIntVal()+1);
1404 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
1406 // If the type hasn't been defined yet, create a forward definition and
1407 // remember where that forward def'n was seen (in case it never is defined).
1408 if (Entry.first == 0) {
1409 Entry.first = StructType::create(Context);
1410 Entry.second = Lex.getLoc();
1412 Result = Entry.first;
1418 // Parse the type suffixes.
1420 switch (Lex.getKind()) {
1423 if (!AllowVoid && Result->isVoidTy())
1424 return Error(TypeLoc, "void type only allowed for function results");
1427 // Type ::= Type '*'
1429 if (Result->isLabelTy())
1430 return TokError("basic block pointers are invalid");
1431 if (Result->isVoidTy())
1432 return TokError("pointers to void are invalid - use i8* instead");
1433 if (!PointerType::isValidElementType(Result))
1434 return TokError("pointer to this type is invalid");
1435 Result = PointerType::getUnqual(Result);
1439 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
1440 case lltok::kw_addrspace: {
1441 if (Result->isLabelTy())
1442 return TokError("basic block pointers are invalid");
1443 if (Result->isVoidTy())
1444 return TokError("pointers to void are invalid; use i8* instead");
1445 if (!PointerType::isValidElementType(Result))
1446 return TokError("pointer to this type is invalid");
1448 if (ParseOptionalAddrSpace(AddrSpace) ||
1449 ParseToken(lltok::star, "expected '*' in address space"))
1452 Result = PointerType::get(Result, AddrSpace);
1456 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1458 if (ParseFunctionType(Result))
1465 /// ParseParameterList
1467 /// ::= '(' Arg (',' Arg)* ')'
1469 /// ::= Type OptionalAttributes Value OptionalAttributes
1470 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1471 PerFunctionState &PFS) {
1472 if (ParseToken(lltok::lparen, "expected '(' in call"))
1475 while (Lex.getKind() != lltok::rparen) {
1476 // If this isn't the first argument, we need a comma.
1477 if (!ArgList.empty() &&
1478 ParseToken(lltok::comma, "expected ',' in argument list"))
1481 // Parse the argument.
1484 AttrBuilder ArgAttrs;
1486 if (ParseType(ArgTy, ArgLoc))
1489 // Otherwise, handle normal operands.
1490 if (ParseOptionalParamAttrs(ArgAttrs) || ParseValue(ArgTy, V, PFS))
1492 ArgList.push_back(ParamInfo(ArgLoc, V, Attribute::get(V->getContext(),
1496 Lex.Lex(); // Lex the ')'.
1502 /// ParseArgumentList - Parse the argument list for a function type or function
1504 /// ::= '(' ArgTypeListI ')'
1508 /// ::= ArgTypeList ',' '...'
1509 /// ::= ArgType (',' ArgType)*
1511 bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
1514 assert(Lex.getKind() == lltok::lparen);
1515 Lex.Lex(); // eat the (.
1517 if (Lex.getKind() == lltok::rparen) {
1519 } else if (Lex.getKind() == lltok::dotdotdot) {
1523 LocTy TypeLoc = Lex.getLoc();
1528 if (ParseType(ArgTy) ||
1529 ParseOptionalParamAttrs(Attrs)) return true;
1531 if (ArgTy->isVoidTy())
1532 return Error(TypeLoc, "argument can not have void type");
1534 if (Lex.getKind() == lltok::LocalVar) {
1535 Name = Lex.getStrVal();
1539 if (!FunctionType::isValidArgumentType(ArgTy))
1540 return Error(TypeLoc, "invalid type for function argument");
1542 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1543 Attribute::get(ArgTy->getContext(),
1546 while (EatIfPresent(lltok::comma)) {
1547 // Handle ... at end of arg list.
1548 if (EatIfPresent(lltok::dotdotdot)) {
1553 // Otherwise must be an argument type.
1554 TypeLoc = Lex.getLoc();
1555 if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
1557 if (ArgTy->isVoidTy())
1558 return Error(TypeLoc, "argument can not have void type");
1560 if (Lex.getKind() == lltok::LocalVar) {
1561 Name = Lex.getStrVal();
1567 if (!ArgTy->isFirstClassType())
1568 return Error(TypeLoc, "invalid type for function argument");
1570 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1571 Attribute::get(ArgTy->getContext(), Attrs),
1576 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1579 /// ParseFunctionType
1580 /// ::= Type ArgumentList OptionalAttrs
1581 bool LLParser::ParseFunctionType(Type *&Result) {
1582 assert(Lex.getKind() == lltok::lparen);
1584 if (!FunctionType::isValidReturnType(Result))
1585 return TokError("invalid function return type");
1587 SmallVector<ArgInfo, 8> ArgList;
1589 if (ParseArgumentList(ArgList, isVarArg))
1592 // Reject names on the arguments lists.
1593 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1594 if (!ArgList[i].Name.empty())
1595 return Error(ArgList[i].Loc, "argument name invalid in function type");
1596 if (ArgList[i].Attrs.hasAttributes())
1597 return Error(ArgList[i].Loc,
1598 "argument attributes invalid in function type");
1601 SmallVector<Type*, 16> ArgListTy;
1602 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1603 ArgListTy.push_back(ArgList[i].Ty);
1605 Result = FunctionType::get(Result, ArgListTy, isVarArg);
1609 /// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
1611 bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
1612 SmallVector<Type*, 8> Elts;
1613 if (ParseStructBody(Elts)) return true;
1615 Result = StructType::get(Context, Elts, Packed);
1619 /// ParseStructDefinition - Parse a struct in a 'type' definition.
1620 bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
1621 std::pair<Type*, LocTy> &Entry,
1623 // If the type was already defined, diagnose the redefinition.
1624 if (Entry.first && !Entry.second.isValid())
1625 return Error(TypeLoc, "redefinition of type");
1627 // If we have opaque, just return without filling in the definition for the
1628 // struct. This counts as a definition as far as the .ll file goes.
1629 if (EatIfPresent(lltok::kw_opaque)) {
1630 // This type is being defined, so clear the location to indicate this.
1631 Entry.second = SMLoc();
1633 // If this type number has never been uttered, create it.
1634 if (Entry.first == 0)
1635 Entry.first = StructType::create(Context, Name);
1636 ResultTy = Entry.first;
1640 // If the type starts with '<', then it is either a packed struct or a vector.
1641 bool isPacked = EatIfPresent(lltok::less);
1643 // If we don't have a struct, then we have a random type alias, which we
1644 // accept for compatibility with old files. These types are not allowed to be
1645 // forward referenced and not allowed to be recursive.
1646 if (Lex.getKind() != lltok::lbrace) {
1648 return Error(TypeLoc, "forward references to non-struct type");
1652 return ParseArrayVectorType(ResultTy, true);
1653 return ParseType(ResultTy);
1656 // This type is being defined, so clear the location to indicate this.
1657 Entry.second = SMLoc();
1659 // If this type number has never been uttered, create it.
1660 if (Entry.first == 0)
1661 Entry.first = StructType::create(Context, Name);
1663 StructType *STy = cast<StructType>(Entry.first);
1665 SmallVector<Type*, 8> Body;
1666 if (ParseStructBody(Body) ||
1667 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
1670 STy->setBody(Body, isPacked);
1676 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
1679 /// ::= '{' Type (',' Type)* '}'
1680 /// ::= '<' '{' '}' '>'
1681 /// ::= '<' '{' Type (',' Type)* '}' '>'
1682 bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
1683 assert(Lex.getKind() == lltok::lbrace);
1684 Lex.Lex(); // Consume the '{'
1686 // Handle the empty struct.
1687 if (EatIfPresent(lltok::rbrace))
1690 LocTy EltTyLoc = Lex.getLoc();
1692 if (ParseType(Ty)) return true;
1695 if (!StructType::isValidElementType(Ty))
1696 return Error(EltTyLoc, "invalid element type for struct");
1698 while (EatIfPresent(lltok::comma)) {
1699 EltTyLoc = Lex.getLoc();
1700 if (ParseType(Ty)) return true;
1702 if (!StructType::isValidElementType(Ty))
1703 return Error(EltTyLoc, "invalid element type for struct");
1708 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
1711 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
1712 /// token has already been consumed.
1714 /// ::= '[' APSINTVAL 'x' Types ']'
1715 /// ::= '<' APSINTVAL 'x' Types '>'
1716 bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
1717 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
1718 Lex.getAPSIntVal().getBitWidth() > 64)
1719 return TokError("expected number in address space");
1721 LocTy SizeLoc = Lex.getLoc();
1722 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
1725 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
1728 LocTy TypeLoc = Lex.getLoc();
1730 if (ParseType(EltTy)) return true;
1732 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
1733 "expected end of sequential type"))
1738 return Error(SizeLoc, "zero element vector is illegal");
1739 if ((unsigned)Size != Size)
1740 return Error(SizeLoc, "size too large for vector");
1741 if (!VectorType::isValidElementType(EltTy))
1742 return Error(TypeLoc, "invalid vector element type");
1743 Result = VectorType::get(EltTy, unsigned(Size));
1745 if (!ArrayType::isValidElementType(EltTy))
1746 return Error(TypeLoc, "invalid array element type");
1747 Result = ArrayType::get(EltTy, Size);
1752 //===----------------------------------------------------------------------===//
1753 // Function Semantic Analysis.
1754 //===----------------------------------------------------------------------===//
1756 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
1758 : P(p), F(f), FunctionNumber(functionNumber) {
1760 // Insert unnamed arguments into the NumberedVals list.
1761 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
1764 NumberedVals.push_back(AI);
1767 LLParser::PerFunctionState::~PerFunctionState() {
1768 // If there were any forward referenced non-basicblock values, delete them.
1769 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
1770 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
1771 if (!isa<BasicBlock>(I->second.first)) {
1772 I->second.first->replaceAllUsesWith(
1773 UndefValue::get(I->second.first->getType()));
1774 delete I->second.first;
1775 I->second.first = 0;
1778 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1779 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
1780 if (!isa<BasicBlock>(I->second.first)) {
1781 I->second.first->replaceAllUsesWith(
1782 UndefValue::get(I->second.first->getType()));
1783 delete I->second.first;
1784 I->second.first = 0;
1788 bool LLParser::PerFunctionState::FinishFunction() {
1789 // Check to see if someone took the address of labels in this block.
1790 if (!P.ForwardRefBlockAddresses.empty()) {
1792 if (!F.getName().empty()) {
1793 FunctionID.Kind = ValID::t_GlobalName;
1794 FunctionID.StrVal = F.getName();
1796 FunctionID.Kind = ValID::t_GlobalID;
1797 FunctionID.UIntVal = FunctionNumber;
1800 std::map<ValID, std::vector<std::pair<ValID, GlobalValue*> > >::iterator
1801 FRBAI = P.ForwardRefBlockAddresses.find(FunctionID);
1802 if (FRBAI != P.ForwardRefBlockAddresses.end()) {
1803 // Resolve all these references.
1804 if (P.ResolveForwardRefBlockAddresses(&F, FRBAI->second, this))
1807 P.ForwardRefBlockAddresses.erase(FRBAI);
1811 if (!ForwardRefVals.empty())
1812 return P.Error(ForwardRefVals.begin()->second.second,
1813 "use of undefined value '%" + ForwardRefVals.begin()->first +
1815 if (!ForwardRefValIDs.empty())
1816 return P.Error(ForwardRefValIDs.begin()->second.second,
1817 "use of undefined value '%" +
1818 Twine(ForwardRefValIDs.begin()->first) + "'");
1823 /// GetVal - Get a value with the specified name or ID, creating a
1824 /// forward reference record if needed. This can return null if the value
1825 /// exists but does not have the right type.
1826 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
1827 Type *Ty, LocTy Loc) {
1828 // Look this name up in the normal function symbol table.
1829 Value *Val = F.getValueSymbolTable().lookup(Name);
1831 // If this is a forward reference for the value, see if we already created a
1832 // forward ref record.
1834 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1835 I = ForwardRefVals.find(Name);
1836 if (I != ForwardRefVals.end())
1837 Val = I->second.first;
1840 // If we have the value in the symbol table or fwd-ref table, return it.
1842 if (Val->getType() == Ty) return Val;
1843 if (Ty->isLabelTy())
1844 P.Error(Loc, "'%" + Name + "' is not a basic block");
1846 P.Error(Loc, "'%" + Name + "' defined with type '" +
1847 getTypeString(Val->getType()) + "'");
1851 // Don't make placeholders with invalid type.
1852 if (!Ty->isFirstClassType() && !Ty->isLabelTy()) {
1853 P.Error(Loc, "invalid use of a non-first-class type");
1857 // Otherwise, create a new forward reference for this value and remember it.
1859 if (Ty->isLabelTy())
1860 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
1862 FwdVal = new Argument(Ty, Name);
1864 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1868 Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty,
1870 // Look this name up in the normal function symbol table.
1871 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
1873 // If this is a forward reference for the value, see if we already created a
1874 // forward ref record.
1876 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1877 I = ForwardRefValIDs.find(ID);
1878 if (I != ForwardRefValIDs.end())
1879 Val = I->second.first;
1882 // If we have the value in the symbol table or fwd-ref table, return it.
1884 if (Val->getType() == Ty) return Val;
1885 if (Ty->isLabelTy())
1886 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
1888 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
1889 getTypeString(Val->getType()) + "'");
1893 if (!Ty->isFirstClassType() && !Ty->isLabelTy()) {
1894 P.Error(Loc, "invalid use of a non-first-class type");
1898 // Otherwise, create a new forward reference for this value and remember it.
1900 if (Ty->isLabelTy())
1901 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
1903 FwdVal = new Argument(Ty);
1905 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1909 /// SetInstName - After an instruction is parsed and inserted into its
1910 /// basic block, this installs its name.
1911 bool LLParser::PerFunctionState::SetInstName(int NameID,
1912 const std::string &NameStr,
1913 LocTy NameLoc, Instruction *Inst) {
1914 // If this instruction has void type, it cannot have a name or ID specified.
1915 if (Inst->getType()->isVoidTy()) {
1916 if (NameID != -1 || !NameStr.empty())
1917 return P.Error(NameLoc, "instructions returning void cannot have a name");
1921 // If this was a numbered instruction, verify that the instruction is the
1922 // expected value and resolve any forward references.
1923 if (NameStr.empty()) {
1924 // If neither a name nor an ID was specified, just use the next ID.
1926 NameID = NumberedVals.size();
1928 if (unsigned(NameID) != NumberedVals.size())
1929 return P.Error(NameLoc, "instruction expected to be numbered '%" +
1930 Twine(NumberedVals.size()) + "'");
1932 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
1933 ForwardRefValIDs.find(NameID);
1934 if (FI != ForwardRefValIDs.end()) {
1935 if (FI->second.first->getType() != Inst->getType())
1936 return P.Error(NameLoc, "instruction forward referenced with type '" +
1937 getTypeString(FI->second.first->getType()) + "'");
1938 FI->second.first->replaceAllUsesWith(Inst);
1939 delete FI->second.first;
1940 ForwardRefValIDs.erase(FI);
1943 NumberedVals.push_back(Inst);
1947 // Otherwise, the instruction had a name. Resolve forward refs and set it.
1948 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1949 FI = ForwardRefVals.find(NameStr);
1950 if (FI != ForwardRefVals.end()) {
1951 if (FI->second.first->getType() != Inst->getType())
1952 return P.Error(NameLoc, "instruction forward referenced with type '" +
1953 getTypeString(FI->second.first->getType()) + "'");
1954 FI->second.first->replaceAllUsesWith(Inst);
1955 delete FI->second.first;
1956 ForwardRefVals.erase(FI);
1959 // Set the name on the instruction.
1960 Inst->setName(NameStr);
1962 if (Inst->getName() != NameStr)
1963 return P.Error(NameLoc, "multiple definition of local value named '" +
1968 /// GetBB - Get a basic block with the specified name or ID, creating a
1969 /// forward reference record if needed.
1970 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
1972 return cast_or_null<BasicBlock>(GetVal(Name,
1973 Type::getLabelTy(F.getContext()), Loc));
1976 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
1977 return cast_or_null<BasicBlock>(GetVal(ID,
1978 Type::getLabelTy(F.getContext()), Loc));
1981 /// DefineBB - Define the specified basic block, which is either named or
1982 /// unnamed. If there is an error, this returns null otherwise it returns
1983 /// the block being defined.
1984 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
1988 BB = GetBB(NumberedVals.size(), Loc);
1990 BB = GetBB(Name, Loc);
1991 if (BB == 0) return 0; // Already diagnosed error.
1993 // Move the block to the end of the function. Forward ref'd blocks are
1994 // inserted wherever they happen to be referenced.
1995 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
1997 // Remove the block from forward ref sets.
1999 ForwardRefValIDs.erase(NumberedVals.size());
2000 NumberedVals.push_back(BB);
2002 // BB forward references are already in the function symbol table.
2003 ForwardRefVals.erase(Name);
2009 //===----------------------------------------------------------------------===//
2011 //===----------------------------------------------------------------------===//
2013 /// ParseValID - Parse an abstract value that doesn't necessarily have a
2014 /// type implied. For example, if we parse "4" we don't know what integer type
2015 /// it has. The value will later be combined with its type and checked for
2016 /// sanity. PFS is used to convert function-local operands of metadata (since
2017 /// metadata operands are not just parsed here but also converted to values).
2018 /// PFS can be null when we are not parsing metadata values inside a function.
2019 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2020 ID.Loc = Lex.getLoc();
2021 switch (Lex.getKind()) {
2022 default: return TokError("expected value token");
2023 case lltok::GlobalID: // @42
2024 ID.UIntVal = Lex.getUIntVal();
2025 ID.Kind = ValID::t_GlobalID;
2027 case lltok::GlobalVar: // @foo
2028 ID.StrVal = Lex.getStrVal();
2029 ID.Kind = ValID::t_GlobalName;
2031 case lltok::LocalVarID: // %42
2032 ID.UIntVal = Lex.getUIntVal();
2033 ID.Kind = ValID::t_LocalID;
2035 case lltok::LocalVar: // %foo
2036 ID.StrVal = Lex.getStrVal();
2037 ID.Kind = ValID::t_LocalName;
2039 case lltok::exclaim: // !42, !{...}, or !"foo"
2040 return ParseMetadataValue(ID, PFS);
2042 ID.APSIntVal = Lex.getAPSIntVal();
2043 ID.Kind = ValID::t_APSInt;
2045 case lltok::APFloat:
2046 ID.APFloatVal = Lex.getAPFloatVal();
2047 ID.Kind = ValID::t_APFloat;
2049 case lltok::kw_true:
2050 ID.ConstantVal = ConstantInt::getTrue(Context);
2051 ID.Kind = ValID::t_Constant;
2053 case lltok::kw_false:
2054 ID.ConstantVal = ConstantInt::getFalse(Context);
2055 ID.Kind = ValID::t_Constant;
2057 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2058 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2059 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2061 case lltok::lbrace: {
2062 // ValID ::= '{' ConstVector '}'
2064 SmallVector<Constant*, 16> Elts;
2065 if (ParseGlobalValueVector(Elts) ||
2066 ParseToken(lltok::rbrace, "expected end of struct constant"))
2069 ID.ConstantStructElts = new Constant*[Elts.size()];
2070 ID.UIntVal = Elts.size();
2071 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2072 ID.Kind = ValID::t_ConstantStruct;
2076 // ValID ::= '<' ConstVector '>' --> Vector.
2077 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2079 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2081 SmallVector<Constant*, 16> Elts;
2082 LocTy FirstEltLoc = Lex.getLoc();
2083 if (ParseGlobalValueVector(Elts) ||
2085 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2086 ParseToken(lltok::greater, "expected end of constant"))
2089 if (isPackedStruct) {
2090 ID.ConstantStructElts = new Constant*[Elts.size()];
2091 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2092 ID.UIntVal = Elts.size();
2093 ID.Kind = ValID::t_PackedConstantStruct;
2098 return Error(ID.Loc, "constant vector must not be empty");
2100 if (!Elts[0]->getType()->isIntegerTy() &&
2101 !Elts[0]->getType()->isFloatingPointTy() &&
2102 !Elts[0]->getType()->isPointerTy())
2103 return Error(FirstEltLoc,
2104 "vector elements must have integer, pointer or floating point type");
2106 // Verify that all the vector elements have the same type.
2107 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2108 if (Elts[i]->getType() != Elts[0]->getType())
2109 return Error(FirstEltLoc,
2110 "vector element #" + Twine(i) +
2111 " is not of type '" + getTypeString(Elts[0]->getType()));
2113 ID.ConstantVal = ConstantVector::get(Elts);
2114 ID.Kind = ValID::t_Constant;
2117 case lltok::lsquare: { // Array Constant
2119 SmallVector<Constant*, 16> Elts;
2120 LocTy FirstEltLoc = Lex.getLoc();
2121 if (ParseGlobalValueVector(Elts) ||
2122 ParseToken(lltok::rsquare, "expected end of array constant"))
2125 // Handle empty element.
2127 // Use undef instead of an array because it's inconvenient to determine
2128 // the element type at this point, there being no elements to examine.
2129 ID.Kind = ValID::t_EmptyArray;
2133 if (!Elts[0]->getType()->isFirstClassType())
2134 return Error(FirstEltLoc, "invalid array element type: " +
2135 getTypeString(Elts[0]->getType()));
2137 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2139 // Verify all elements are correct type!
2140 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2141 if (Elts[i]->getType() != Elts[0]->getType())
2142 return Error(FirstEltLoc,
2143 "array element #" + Twine(i) +
2144 " is not of type '" + getTypeString(Elts[0]->getType()));
2147 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2148 ID.Kind = ValID::t_Constant;
2151 case lltok::kw_c: // c "foo"
2153 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2155 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2156 ID.Kind = ValID::t_Constant;
2159 case lltok::kw_asm: {
2160 // ValID ::= 'asm' SideEffect? AlignStack? STRINGCONSTANT ',' STRINGCONSTANT
2161 bool HasSideEffect, AlignStack, AsmDialect;
2163 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2164 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2165 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2166 ParseStringConstant(ID.StrVal) ||
2167 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2168 ParseToken(lltok::StringConstant, "expected constraint string"))
2170 ID.StrVal2 = Lex.getStrVal();
2171 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2172 (unsigned(AsmDialect)<<2);
2173 ID.Kind = ValID::t_InlineAsm;
2177 case lltok::kw_blockaddress: {
2178 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2182 LocTy FnLoc, LabelLoc;
2184 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2186 ParseToken(lltok::comma, "expected comma in block address expression")||
2187 ParseValID(Label) ||
2188 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2191 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2192 return Error(Fn.Loc, "expected function name in blockaddress");
2193 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2194 return Error(Label.Loc, "expected basic block name in blockaddress");
2196 // Make a global variable as a placeholder for this reference.
2197 GlobalVariable *FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context),
2198 false, GlobalValue::InternalLinkage,
2200 ForwardRefBlockAddresses[Fn].push_back(std::make_pair(Label, FwdRef));
2201 ID.ConstantVal = FwdRef;
2202 ID.Kind = ValID::t_Constant;
2206 case lltok::kw_trunc:
2207 case lltok::kw_zext:
2208 case lltok::kw_sext:
2209 case lltok::kw_fptrunc:
2210 case lltok::kw_fpext:
2211 case lltok::kw_bitcast:
2212 case lltok::kw_uitofp:
2213 case lltok::kw_sitofp:
2214 case lltok::kw_fptoui:
2215 case lltok::kw_fptosi:
2216 case lltok::kw_inttoptr:
2217 case lltok::kw_ptrtoint: {
2218 unsigned Opc = Lex.getUIntVal();
2222 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2223 ParseGlobalTypeAndValue(SrcVal) ||
2224 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2225 ParseType(DestTy) ||
2226 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2228 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2229 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2230 getTypeString(SrcVal->getType()) + "' to '" +
2231 getTypeString(DestTy) + "'");
2232 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2234 ID.Kind = ValID::t_Constant;
2237 case lltok::kw_extractvalue: {
2240 SmallVector<unsigned, 4> Indices;
2241 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2242 ParseGlobalTypeAndValue(Val) ||
2243 ParseIndexList(Indices) ||
2244 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2247 if (!Val->getType()->isAggregateType())
2248 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2249 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
2250 return Error(ID.Loc, "invalid indices for extractvalue");
2251 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
2252 ID.Kind = ValID::t_Constant;
2255 case lltok::kw_insertvalue: {
2257 Constant *Val0, *Val1;
2258 SmallVector<unsigned, 4> Indices;
2259 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2260 ParseGlobalTypeAndValue(Val0) ||
2261 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2262 ParseGlobalTypeAndValue(Val1) ||
2263 ParseIndexList(Indices) ||
2264 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2266 if (!Val0->getType()->isAggregateType())
2267 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2268 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
2269 return Error(ID.Loc, "invalid indices for insertvalue");
2270 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
2271 ID.Kind = ValID::t_Constant;
2274 case lltok::kw_icmp:
2275 case lltok::kw_fcmp: {
2276 unsigned PredVal, Opc = Lex.getUIntVal();
2277 Constant *Val0, *Val1;
2279 if (ParseCmpPredicate(PredVal, Opc) ||
2280 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2281 ParseGlobalTypeAndValue(Val0) ||
2282 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2283 ParseGlobalTypeAndValue(Val1) ||
2284 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2287 if (Val0->getType() != Val1->getType())
2288 return Error(ID.Loc, "compare operands must have the same type");
2290 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2292 if (Opc == Instruction::FCmp) {
2293 if (!Val0->getType()->isFPOrFPVectorTy())
2294 return Error(ID.Loc, "fcmp requires floating point operands");
2295 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2297 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2298 if (!Val0->getType()->isIntOrIntVectorTy() &&
2299 !Val0->getType()->getScalarType()->isPointerTy())
2300 return Error(ID.Loc, "icmp requires pointer or integer operands");
2301 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2303 ID.Kind = ValID::t_Constant;
2307 // Binary Operators.
2309 case lltok::kw_fadd:
2311 case lltok::kw_fsub:
2313 case lltok::kw_fmul:
2314 case lltok::kw_udiv:
2315 case lltok::kw_sdiv:
2316 case lltok::kw_fdiv:
2317 case lltok::kw_urem:
2318 case lltok::kw_srem:
2319 case lltok::kw_frem:
2321 case lltok::kw_lshr:
2322 case lltok::kw_ashr: {
2326 unsigned Opc = Lex.getUIntVal();
2327 Constant *Val0, *Val1;
2329 LocTy ModifierLoc = Lex.getLoc();
2330 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
2331 Opc == Instruction::Mul || Opc == Instruction::Shl) {
2332 if (EatIfPresent(lltok::kw_nuw))
2334 if (EatIfPresent(lltok::kw_nsw)) {
2336 if (EatIfPresent(lltok::kw_nuw))
2339 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
2340 Opc == Instruction::LShr || Opc == Instruction::AShr) {
2341 if (EatIfPresent(lltok::kw_exact))
2344 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2345 ParseGlobalTypeAndValue(Val0) ||
2346 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2347 ParseGlobalTypeAndValue(Val1) ||
2348 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2350 if (Val0->getType() != Val1->getType())
2351 return Error(ID.Loc, "operands of constexpr must have same type");
2352 if (!Val0->getType()->isIntOrIntVectorTy()) {
2354 return Error(ModifierLoc, "nuw only applies to integer operations");
2356 return Error(ModifierLoc, "nsw only applies to integer operations");
2358 // Check that the type is valid for the operator.
2360 case Instruction::Add:
2361 case Instruction::Sub:
2362 case Instruction::Mul:
2363 case Instruction::UDiv:
2364 case Instruction::SDiv:
2365 case Instruction::URem:
2366 case Instruction::SRem:
2367 case Instruction::Shl:
2368 case Instruction::AShr:
2369 case Instruction::LShr:
2370 if (!Val0->getType()->isIntOrIntVectorTy())
2371 return Error(ID.Loc, "constexpr requires integer operands");
2373 case Instruction::FAdd:
2374 case Instruction::FSub:
2375 case Instruction::FMul:
2376 case Instruction::FDiv:
2377 case Instruction::FRem:
2378 if (!Val0->getType()->isFPOrFPVectorTy())
2379 return Error(ID.Loc, "constexpr requires fp operands");
2381 default: llvm_unreachable("Unknown binary operator!");
2384 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2385 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2386 if (Exact) Flags |= PossiblyExactOperator::IsExact;
2387 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2389 ID.Kind = ValID::t_Constant;
2393 // Logical Operations
2396 case lltok::kw_xor: {
2397 unsigned Opc = Lex.getUIntVal();
2398 Constant *Val0, *Val1;
2400 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2401 ParseGlobalTypeAndValue(Val0) ||
2402 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2403 ParseGlobalTypeAndValue(Val1) ||
2404 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2406 if (Val0->getType() != Val1->getType())
2407 return Error(ID.Loc, "operands of constexpr must have same type");
2408 if (!Val0->getType()->isIntOrIntVectorTy())
2409 return Error(ID.Loc,
2410 "constexpr requires integer or integer vector operands");
2411 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2412 ID.Kind = ValID::t_Constant;
2416 case lltok::kw_getelementptr:
2417 case lltok::kw_shufflevector:
2418 case lltok::kw_insertelement:
2419 case lltok::kw_extractelement:
2420 case lltok::kw_select: {
2421 unsigned Opc = Lex.getUIntVal();
2422 SmallVector<Constant*, 16> Elts;
2423 bool InBounds = false;
2425 if (Opc == Instruction::GetElementPtr)
2426 InBounds = EatIfPresent(lltok::kw_inbounds);
2427 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2428 ParseGlobalValueVector(Elts) ||
2429 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2432 if (Opc == Instruction::GetElementPtr) {
2433 if (Elts.size() == 0 ||
2434 !Elts[0]->getType()->getScalarType()->isPointerTy())
2435 return Error(ID.Loc, "getelementptr requires pointer operand");
2437 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
2438 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(), Indices))
2439 return Error(ID.Loc, "invalid indices for getelementptr");
2440 ID.ConstantVal = ConstantExpr::getGetElementPtr(Elts[0], Indices,
2442 } else if (Opc == Instruction::Select) {
2443 if (Elts.size() != 3)
2444 return Error(ID.Loc, "expected three operands to select");
2445 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2447 return Error(ID.Loc, Reason);
2448 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2449 } else if (Opc == Instruction::ShuffleVector) {
2450 if (Elts.size() != 3)
2451 return Error(ID.Loc, "expected three operands to shufflevector");
2452 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2453 return Error(ID.Loc, "invalid operands to shufflevector");
2455 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2456 } else if (Opc == Instruction::ExtractElement) {
2457 if (Elts.size() != 2)
2458 return Error(ID.Loc, "expected two operands to extractelement");
2459 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2460 return Error(ID.Loc, "invalid extractelement operands");
2461 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2463 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2464 if (Elts.size() != 3)
2465 return Error(ID.Loc, "expected three operands to insertelement");
2466 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2467 return Error(ID.Loc, "invalid insertelement operands");
2469 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2472 ID.Kind = ValID::t_Constant;
2481 /// ParseGlobalValue - Parse a global value with the specified type.
2482 bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
2486 bool Parsed = ParseValID(ID) ||
2487 ConvertValIDToValue(Ty, ID, V, NULL);
2488 if (V && !(C = dyn_cast<Constant>(V)))
2489 return Error(ID.Loc, "global values must be constants");
2493 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2495 return ParseType(Ty) ||
2496 ParseGlobalValue(Ty, V);
2499 /// ParseGlobalValueVector
2501 /// ::= TypeAndValue (',' TypeAndValue)*
2502 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts) {
2504 if (Lex.getKind() == lltok::rbrace ||
2505 Lex.getKind() == lltok::rsquare ||
2506 Lex.getKind() == lltok::greater ||
2507 Lex.getKind() == lltok::rparen)
2511 if (ParseGlobalTypeAndValue(C)) return true;
2514 while (EatIfPresent(lltok::comma)) {
2515 if (ParseGlobalTypeAndValue(C)) return true;
2522 bool LLParser::ParseMetadataListValue(ValID &ID, PerFunctionState *PFS) {
2523 assert(Lex.getKind() == lltok::lbrace);
2526 SmallVector<Value*, 16> Elts;
2527 if (ParseMDNodeVector(Elts, PFS) ||
2528 ParseToken(lltok::rbrace, "expected end of metadata node"))
2531 ID.MDNodeVal = MDNode::get(Context, Elts);
2532 ID.Kind = ValID::t_MDNode;
2536 /// ParseMetadataValue
2540 bool LLParser::ParseMetadataValue(ValID &ID, PerFunctionState *PFS) {
2541 assert(Lex.getKind() == lltok::exclaim);
2546 if (Lex.getKind() == lltok::lbrace)
2547 return ParseMetadataListValue(ID, PFS);
2549 // Standalone metadata reference
2551 if (Lex.getKind() == lltok::APSInt) {
2552 if (ParseMDNodeID(ID.MDNodeVal)) return true;
2553 ID.Kind = ValID::t_MDNode;
2558 // ::= '!' STRINGCONSTANT
2559 if (ParseMDString(ID.MDStringVal)) return true;
2560 ID.Kind = ValID::t_MDString;
2565 //===----------------------------------------------------------------------===//
2566 // Function Parsing.
2567 //===----------------------------------------------------------------------===//
2569 bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
2570 PerFunctionState *PFS) {
2571 if (Ty->isFunctionTy())
2572 return Error(ID.Loc, "functions are not values, refer to them as pointers");
2575 case ValID::t_LocalID:
2576 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2577 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
2579 case ValID::t_LocalName:
2580 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2581 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
2583 case ValID::t_InlineAsm: {
2584 PointerType *PTy = dyn_cast<PointerType>(Ty);
2586 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
2587 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
2588 return Error(ID.Loc, "invalid type for inline asm constraint string");
2589 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1,
2590 (ID.UIntVal>>1)&1, (InlineAsm::AsmDialect(ID.UIntVal>>2)));
2593 case ValID::t_MDNode:
2594 if (!Ty->isMetadataTy())
2595 return Error(ID.Loc, "metadata value must have metadata type");
2598 case ValID::t_MDString:
2599 if (!Ty->isMetadataTy())
2600 return Error(ID.Loc, "metadata value must have metadata type");
2603 case ValID::t_GlobalName:
2604 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
2606 case ValID::t_GlobalID:
2607 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
2609 case ValID::t_APSInt:
2610 if (!Ty->isIntegerTy())
2611 return Error(ID.Loc, "integer constant must have integer type");
2612 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
2613 V = ConstantInt::get(Context, ID.APSIntVal);
2615 case ValID::t_APFloat:
2616 if (!Ty->isFloatingPointTy() ||
2617 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
2618 return Error(ID.Loc, "floating point constant invalid for type");
2620 // The lexer has no type info, so builds all half, float, and double FP
2621 // constants as double. Fix this here. Long double does not need this.
2622 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble) {
2625 ID.APFloatVal.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven,
2627 else if (Ty->isFloatTy())
2628 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
2631 V = ConstantFP::get(Context, ID.APFloatVal);
2633 if (V->getType() != Ty)
2634 return Error(ID.Loc, "floating point constant does not have type '" +
2635 getTypeString(Ty) + "'");
2639 if (!Ty->isPointerTy())
2640 return Error(ID.Loc, "null must be a pointer type");
2641 V = ConstantPointerNull::get(cast<PointerType>(Ty));
2643 case ValID::t_Undef:
2644 // FIXME: LabelTy should not be a first-class type.
2645 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2646 return Error(ID.Loc, "invalid type for undef constant");
2647 V = UndefValue::get(Ty);
2649 case ValID::t_EmptyArray:
2650 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
2651 return Error(ID.Loc, "invalid empty array initializer");
2652 V = UndefValue::get(Ty);
2655 // FIXME: LabelTy should not be a first-class type.
2656 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2657 return Error(ID.Loc, "invalid type for null constant");
2658 V = Constant::getNullValue(Ty);
2660 case ValID::t_Constant:
2661 if (ID.ConstantVal->getType() != Ty)
2662 return Error(ID.Loc, "constant expression type mismatch");
2666 case ValID::t_ConstantStruct:
2667 case ValID::t_PackedConstantStruct:
2668 if (StructType *ST = dyn_cast<StructType>(Ty)) {
2669 if (ST->getNumElements() != ID.UIntVal)
2670 return Error(ID.Loc,
2671 "initializer with struct type has wrong # elements");
2672 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
2673 return Error(ID.Loc, "packed'ness of initializer and type don't match");
2675 // Verify that the elements are compatible with the structtype.
2676 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
2677 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
2678 return Error(ID.Loc, "element " + Twine(i) +
2679 " of struct initializer doesn't match struct element type");
2681 V = ConstantStruct::get(ST, makeArrayRef(ID.ConstantStructElts,
2684 return Error(ID.Loc, "constant expression type mismatch");
2687 llvm_unreachable("Invalid ValID");
2690 bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS) {
2693 return ParseValID(ID, PFS) ||
2694 ConvertValIDToValue(Ty, ID, V, PFS);
2697 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
2699 return ParseType(Ty) ||
2700 ParseValue(Ty, V, PFS);
2703 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
2704 PerFunctionState &PFS) {
2707 if (ParseTypeAndValue(V, PFS)) return true;
2708 if (!isa<BasicBlock>(V))
2709 return Error(Loc, "expected a basic block");
2710 BB = cast<BasicBlock>(V);
2716 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
2717 /// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
2718 /// OptionalAlign OptGC
2719 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
2720 // Parse the linkage.
2721 LocTy LinkageLoc = Lex.getLoc();
2724 unsigned Visibility;
2725 AttrBuilder RetAttrs;
2728 LocTy RetTypeLoc = Lex.getLoc();
2729 if (ParseOptionalLinkage(Linkage) ||
2730 ParseOptionalVisibility(Visibility) ||
2731 ParseOptionalCallingConv(CC) ||
2732 ParseOptionalReturnAttrs(RetAttrs) ||
2733 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
2736 // Verify that the linkage is ok.
2737 switch ((GlobalValue::LinkageTypes)Linkage) {
2738 case GlobalValue::ExternalLinkage:
2739 break; // always ok.
2740 case GlobalValue::DLLImportLinkage:
2741 case GlobalValue::ExternalWeakLinkage:
2743 return Error(LinkageLoc, "invalid linkage for function definition");
2745 case GlobalValue::PrivateLinkage:
2746 case GlobalValue::LinkerPrivateLinkage:
2747 case GlobalValue::LinkerPrivateWeakLinkage:
2748 case GlobalValue::InternalLinkage:
2749 case GlobalValue::AvailableExternallyLinkage:
2750 case GlobalValue::LinkOnceAnyLinkage:
2751 case GlobalValue::LinkOnceODRLinkage:
2752 case GlobalValue::LinkOnceODRAutoHideLinkage:
2753 case GlobalValue::WeakAnyLinkage:
2754 case GlobalValue::WeakODRLinkage:
2755 case GlobalValue::DLLExportLinkage:
2757 return Error(LinkageLoc, "invalid linkage for function declaration");
2759 case GlobalValue::AppendingLinkage:
2760 case GlobalValue::CommonLinkage:
2761 return Error(LinkageLoc, "invalid function linkage type");
2764 if (!FunctionType::isValidReturnType(RetType))
2765 return Error(RetTypeLoc, "invalid function return type");
2767 LocTy NameLoc = Lex.getLoc();
2769 std::string FunctionName;
2770 if (Lex.getKind() == lltok::GlobalVar) {
2771 FunctionName = Lex.getStrVal();
2772 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
2773 unsigned NameID = Lex.getUIntVal();
2775 if (NameID != NumberedVals.size())
2776 return TokError("function expected to be numbered '%" +
2777 Twine(NumberedVals.size()) + "'");
2779 return TokError("expected function name");
2784 if (Lex.getKind() != lltok::lparen)
2785 return TokError("expected '(' in function argument list");
2787 SmallVector<ArgInfo, 8> ArgList;
2789 AttrBuilder FuncAttrs;
2790 std::string Section;
2794 LocTy UnnamedAddrLoc;
2796 if (ParseArgumentList(ArgList, isVarArg) ||
2797 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
2799 ParseOptionalFuncAttrs(FuncAttrs) ||
2800 (EatIfPresent(lltok::kw_section) &&
2801 ParseStringConstant(Section)) ||
2802 ParseOptionalAlignment(Alignment) ||
2803 (EatIfPresent(lltok::kw_gc) &&
2804 ParseStringConstant(GC)))
2807 // If the alignment was parsed as an attribute, move to the alignment field.
2808 if (FuncAttrs.hasAlignmentAttr()) {
2809 Alignment = FuncAttrs.getAlignment();
2810 FuncAttrs.removeAttribute(Attribute::Alignment);
2813 // Okay, if we got here, the function is syntactically valid. Convert types
2814 // and do semantic checks.
2815 std::vector<Type*> ParamTypeList;
2816 SmallVector<AttributeSet, 8> Attrs;
2818 if (RetAttrs.hasAttributes())
2819 Attrs.push_back(AttributeSet::get(RetType->getContext(),
2820 AttributeSet::ReturnIndex,
2823 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2824 ParamTypeList.push_back(ArgList[i].Ty);
2825 if (ArgList[i].Attrs.hasAttributes()) {
2826 AttrBuilder B(ArgList[i].Attrs);
2827 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
2831 if (FuncAttrs.hasAttributes())
2832 Attrs.push_back(AttributeSet::get(RetType->getContext(),
2833 AttributeSet::FunctionIndex,
2836 AttributeSet PAL = AttributeSet::get(Context, Attrs);
2838 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
2839 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
2842 FunctionType::get(RetType, ParamTypeList, isVarArg);
2843 PointerType *PFT = PointerType::getUnqual(FT);
2846 if (!FunctionName.empty()) {
2847 // If this was a definition of a forward reference, remove the definition
2848 // from the forward reference table and fill in the forward ref.
2849 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
2850 ForwardRefVals.find(FunctionName);
2851 if (FRVI != ForwardRefVals.end()) {
2852 Fn = M->getFunction(FunctionName);
2854 return Error(FRVI->second.second, "invalid forward reference to "
2855 "function as global value!");
2856 if (Fn->getType() != PFT)
2857 return Error(FRVI->second.second, "invalid forward reference to "
2858 "function '" + FunctionName + "' with wrong type!");
2860 ForwardRefVals.erase(FRVI);
2861 } else if ((Fn = M->getFunction(FunctionName))) {
2862 // Reject redefinitions.
2863 return Error(NameLoc, "invalid redefinition of function '" +
2864 FunctionName + "'");
2865 } else if (M->getNamedValue(FunctionName)) {
2866 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
2870 // If this is a definition of a forward referenced function, make sure the
2872 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
2873 = ForwardRefValIDs.find(NumberedVals.size());
2874 if (I != ForwardRefValIDs.end()) {
2875 Fn = cast<Function>(I->second.first);
2876 if (Fn->getType() != PFT)
2877 return Error(NameLoc, "type of definition and forward reference of '@" +
2878 Twine(NumberedVals.size()) + "' disagree");
2879 ForwardRefValIDs.erase(I);
2884 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
2885 else // Move the forward-reference to the correct spot in the module.
2886 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
2888 if (FunctionName.empty())
2889 NumberedVals.push_back(Fn);
2891 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
2892 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
2893 Fn->setCallingConv(CC);
2894 Fn->setAttributes(PAL);
2895 Fn->setUnnamedAddr(UnnamedAddr);
2896 Fn->setAlignment(Alignment);
2897 Fn->setSection(Section);
2898 if (!GC.empty()) Fn->setGC(GC.c_str());
2900 // Add all of the arguments we parsed to the function.
2901 Function::arg_iterator ArgIt = Fn->arg_begin();
2902 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
2903 // If the argument has a name, insert it into the argument symbol table.
2904 if (ArgList[i].Name.empty()) continue;
2906 // Set the name, if it conflicted, it will be auto-renamed.
2907 ArgIt->setName(ArgList[i].Name);
2909 if (ArgIt->getName() != ArgList[i].Name)
2910 return Error(ArgList[i].Loc, "redefinition of argument '%" +
2911 ArgList[i].Name + "'");
2918 /// ParseFunctionBody
2919 /// ::= '{' BasicBlock+ '}'
2921 bool LLParser::ParseFunctionBody(Function &Fn) {
2922 if (Lex.getKind() != lltok::lbrace)
2923 return TokError("expected '{' in function body");
2924 Lex.Lex(); // eat the {.
2926 int FunctionNumber = -1;
2927 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
2929 PerFunctionState PFS(*this, Fn, FunctionNumber);
2931 // We need at least one basic block.
2932 if (Lex.getKind() == lltok::rbrace)
2933 return TokError("function body requires at least one basic block");
2935 while (Lex.getKind() != lltok::rbrace)
2936 if (ParseBasicBlock(PFS)) return true;
2941 // Verify function is ok.
2942 return PFS.FinishFunction();
2946 /// ::= LabelStr? Instruction*
2947 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
2948 // If this basic block starts out with a name, remember it.
2950 LocTy NameLoc = Lex.getLoc();
2951 if (Lex.getKind() == lltok::LabelStr) {
2952 Name = Lex.getStrVal();
2956 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
2957 if (BB == 0) return true;
2959 std::string NameStr;
2961 // Parse the instructions in this block until we get a terminator.
2963 SmallVector<std::pair<unsigned, MDNode *>, 4> MetadataOnInst;
2965 // This instruction may have three possibilities for a name: a) none
2966 // specified, b) name specified "%foo =", c) number specified: "%4 =".
2967 LocTy NameLoc = Lex.getLoc();
2971 if (Lex.getKind() == lltok::LocalVarID) {
2972 NameID = Lex.getUIntVal();
2974 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
2976 } else if (Lex.getKind() == lltok::LocalVar) {
2977 NameStr = Lex.getStrVal();
2979 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
2983 switch (ParseInstruction(Inst, BB, PFS)) {
2984 default: llvm_unreachable("Unknown ParseInstruction result!");
2985 case InstError: return true;
2987 BB->getInstList().push_back(Inst);
2989 // With a normal result, we check to see if the instruction is followed by
2990 // a comma and metadata.
2991 if (EatIfPresent(lltok::comma))
2992 if (ParseInstructionMetadata(Inst, &PFS))
2995 case InstExtraComma:
2996 BB->getInstList().push_back(Inst);
2998 // If the instruction parser ate an extra comma at the end of it, it
2999 // *must* be followed by metadata.
3000 if (ParseInstructionMetadata(Inst, &PFS))
3005 // Set the name on the instruction.
3006 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
3007 } while (!isa<TerminatorInst>(Inst));
3012 //===----------------------------------------------------------------------===//
3013 // Instruction Parsing.
3014 //===----------------------------------------------------------------------===//
3016 /// ParseInstruction - Parse one of the many different instructions.
3018 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
3019 PerFunctionState &PFS) {
3020 lltok::Kind Token = Lex.getKind();
3021 if (Token == lltok::Eof)
3022 return TokError("found end of file when expecting more instructions");
3023 LocTy Loc = Lex.getLoc();
3024 unsigned KeywordVal = Lex.getUIntVal();
3025 Lex.Lex(); // Eat the keyword.
3028 default: return Error(Loc, "expected instruction opcode");
3029 // Terminator Instructions.
3030 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
3031 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
3032 case lltok::kw_br: return ParseBr(Inst, PFS);
3033 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
3034 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
3035 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
3036 case lltok::kw_resume: return ParseResume(Inst, PFS);
3037 // Binary Operators.
3041 case lltok::kw_shl: {
3042 bool NUW = EatIfPresent(lltok::kw_nuw);
3043 bool NSW = EatIfPresent(lltok::kw_nsw);
3044 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
3046 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3048 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
3049 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
3052 case lltok::kw_fadd:
3053 case lltok::kw_fsub:
3054 case lltok::kw_fmul:
3055 case lltok::kw_fdiv:
3056 case lltok::kw_frem: {
3057 FastMathFlags FMF = EatFastMathFlagsIfPresent();
3058 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
3062 Inst->setFastMathFlags(FMF);
3066 case lltok::kw_sdiv:
3067 case lltok::kw_udiv:
3068 case lltok::kw_lshr:
3069 case lltok::kw_ashr: {
3070 bool Exact = EatIfPresent(lltok::kw_exact);
3072 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3073 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
3077 case lltok::kw_urem:
3078 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
3081 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
3082 case lltok::kw_icmp:
3083 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
3085 case lltok::kw_trunc:
3086 case lltok::kw_zext:
3087 case lltok::kw_sext:
3088 case lltok::kw_fptrunc:
3089 case lltok::kw_fpext:
3090 case lltok::kw_bitcast:
3091 case lltok::kw_uitofp:
3092 case lltok::kw_sitofp:
3093 case lltok::kw_fptoui:
3094 case lltok::kw_fptosi:
3095 case lltok::kw_inttoptr:
3096 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
3098 case lltok::kw_select: return ParseSelect(Inst, PFS);
3099 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
3100 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
3101 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
3102 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
3103 case lltok::kw_phi: return ParsePHI(Inst, PFS);
3104 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
3105 case lltok::kw_call: return ParseCall(Inst, PFS, false);
3106 case lltok::kw_tail: return ParseCall(Inst, PFS, true);
3108 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
3109 case lltok::kw_load: return ParseLoad(Inst, PFS);
3110 case lltok::kw_store: return ParseStore(Inst, PFS);
3111 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
3112 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
3113 case lltok::kw_fence: return ParseFence(Inst, PFS);
3114 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
3115 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
3116 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
3120 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
3121 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
3122 if (Opc == Instruction::FCmp) {
3123 switch (Lex.getKind()) {
3124 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
3125 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
3126 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
3127 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
3128 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
3129 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
3130 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
3131 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
3132 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
3133 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
3134 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
3135 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
3136 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
3137 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
3138 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
3139 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
3140 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
3143 switch (Lex.getKind()) {
3144 default: return TokError("expected icmp predicate (e.g. 'eq')");
3145 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
3146 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
3147 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
3148 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
3149 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
3150 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
3151 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
3152 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
3153 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
3154 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3161 //===----------------------------------------------------------------------===//
3162 // Terminator Instructions.
3163 //===----------------------------------------------------------------------===//
3165 /// ParseRet - Parse a return instruction.
3166 /// ::= 'ret' void (',' !dbg, !1)*
3167 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
3168 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3169 PerFunctionState &PFS) {
3170 SMLoc TypeLoc = Lex.getLoc();
3172 if (ParseType(Ty, true /*void allowed*/)) return true;
3174 Type *ResType = PFS.getFunction().getReturnType();
3176 if (Ty->isVoidTy()) {
3177 if (!ResType->isVoidTy())
3178 return Error(TypeLoc, "value doesn't match function result type '" +
3179 getTypeString(ResType) + "'");
3181 Inst = ReturnInst::Create(Context);
3186 if (ParseValue(Ty, RV, PFS)) return true;
3188 if (ResType != RV->getType())
3189 return Error(TypeLoc, "value doesn't match function result type '" +
3190 getTypeString(ResType) + "'");
3192 Inst = ReturnInst::Create(Context, RV);
3198 /// ::= 'br' TypeAndValue
3199 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3200 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
3203 BasicBlock *Op1, *Op2;
3204 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
3206 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
3207 Inst = BranchInst::Create(BB);
3211 if (Op0->getType() != Type::getInt1Ty(Context))
3212 return Error(Loc, "branch condition must have 'i1' type");
3214 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
3215 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
3216 ParseToken(lltok::comma, "expected ',' after true destination") ||
3217 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
3220 Inst = BranchInst::Create(Op1, Op2, Op0);
3226 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
3228 /// ::= (TypeAndValue ',' TypeAndValue)*
3229 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
3230 LocTy CondLoc, BBLoc;
3232 BasicBlock *DefaultBB;
3233 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
3234 ParseToken(lltok::comma, "expected ',' after switch condition") ||
3235 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
3236 ParseToken(lltok::lsquare, "expected '[' with switch table"))
3239 if (!Cond->getType()->isIntegerTy())
3240 return Error(CondLoc, "switch condition must have integer type");
3242 // Parse the jump table pairs.
3243 SmallPtrSet<Value*, 32> SeenCases;
3244 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
3245 while (Lex.getKind() != lltok::rsquare) {
3249 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
3250 ParseToken(lltok::comma, "expected ',' after case value") ||
3251 ParseTypeAndBasicBlock(DestBB, PFS))
3254 if (!SeenCases.insert(Constant))
3255 return Error(CondLoc, "duplicate case value in switch");
3256 if (!isa<ConstantInt>(Constant))
3257 return Error(CondLoc, "case value is not a constant integer");
3259 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
3262 Lex.Lex(); // Eat the ']'.
3264 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
3265 for (unsigned i = 0, e = Table.size(); i != e; ++i)
3266 SI->addCase(Table[i].first, Table[i].second);
3273 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
3274 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
3277 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
3278 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
3279 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
3282 if (!Address->getType()->isPointerTy())
3283 return Error(AddrLoc, "indirectbr address must have pointer type");
3285 // Parse the destination list.
3286 SmallVector<BasicBlock*, 16> DestList;
3288 if (Lex.getKind() != lltok::rsquare) {
3290 if (ParseTypeAndBasicBlock(DestBB, PFS))
3292 DestList.push_back(DestBB);
3294 while (EatIfPresent(lltok::comma)) {
3295 if (ParseTypeAndBasicBlock(DestBB, PFS))
3297 DestList.push_back(DestBB);
3301 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
3304 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
3305 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
3306 IBI->addDestination(DestList[i]);
3313 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3314 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3315 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3316 LocTy CallLoc = Lex.getLoc();
3317 AttrBuilder RetAttrs, FnAttrs;
3322 SmallVector<ParamInfo, 16> ArgList;
3324 BasicBlock *NormalBB, *UnwindBB;
3325 if (ParseOptionalCallingConv(CC) ||
3326 ParseOptionalReturnAttrs(RetAttrs) ||
3327 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3328 ParseValID(CalleeID) ||
3329 ParseParameterList(ArgList, PFS) ||
3330 ParseOptionalFuncAttrs(FnAttrs) ||
3331 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3332 ParseTypeAndBasicBlock(NormalBB, PFS) ||
3333 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3334 ParseTypeAndBasicBlock(UnwindBB, PFS))
3337 // If RetType is a non-function pointer type, then this is the short syntax
3338 // for the call, which means that RetType is just the return type. Infer the
3339 // rest of the function argument types from the arguments that are present.
3340 PointerType *PFTy = 0;
3341 FunctionType *Ty = 0;
3342 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3343 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3344 // Pull out the types of all of the arguments...
3345 std::vector<Type*> ParamTypes;
3346 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3347 ParamTypes.push_back(ArgList[i].V->getType());
3349 if (!FunctionType::isValidReturnType(RetType))
3350 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3352 Ty = FunctionType::get(RetType, ParamTypes, false);
3353 PFTy = PointerType::getUnqual(Ty);
3356 // Look up the callee.
3358 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3360 // Set up the Attribute for the function.
3361 SmallVector<AttributeSet, 8> Attrs;
3362 if (RetAttrs.hasAttributes())
3363 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3364 AttributeSet::ReturnIndex,
3367 SmallVector<Value*, 8> Args;
3369 // Loop through FunctionType's arguments and ensure they are specified
3370 // correctly. Also, gather any parameter attributes.
3371 FunctionType::param_iterator I = Ty->param_begin();
3372 FunctionType::param_iterator E = Ty->param_end();
3373 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3374 Type *ExpectedTy = 0;
3377 } else if (!Ty->isVarArg()) {
3378 return Error(ArgList[i].Loc, "too many arguments specified");
3381 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3382 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3383 getTypeString(ExpectedTy) + "'");
3384 Args.push_back(ArgList[i].V);
3385 if (ArgList[i].Attrs.hasAttributes()) {
3386 AttrBuilder B(ArgList[i].Attrs);
3387 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
3392 return Error(CallLoc, "not enough parameters specified for call");
3394 if (FnAttrs.hasAttributes())
3395 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3396 AttributeSet::FunctionIndex,
3399 // Finish off the Attribute and check them
3400 AttributeSet PAL = AttributeSet::get(Context, Attrs);
3402 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB, Args);
3403 II->setCallingConv(CC);
3404 II->setAttributes(PAL);
3410 /// ::= 'resume' TypeAndValue
3411 bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
3412 Value *Exn; LocTy ExnLoc;
3413 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
3416 ResumeInst *RI = ResumeInst::Create(Exn);
3421 //===----------------------------------------------------------------------===//
3422 // Binary Operators.
3423 //===----------------------------------------------------------------------===//
3426 /// ::= ArithmeticOps TypeAndValue ',' Value
3428 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3429 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3430 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3431 unsigned Opc, unsigned OperandType) {
3432 LocTy Loc; Value *LHS, *RHS;
3433 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3434 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3435 ParseValue(LHS->getType(), RHS, PFS))
3439 switch (OperandType) {
3440 default: llvm_unreachable("Unknown operand type!");
3441 case 0: // int or FP.
3442 Valid = LHS->getType()->isIntOrIntVectorTy() ||
3443 LHS->getType()->isFPOrFPVectorTy();
3445 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
3446 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
3450 return Error(Loc, "invalid operand type for instruction");
3452 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3457 /// ::= ArithmeticOps TypeAndValue ',' Value {
3458 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3460 LocTy Loc; Value *LHS, *RHS;
3461 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3462 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3463 ParseValue(LHS->getType(), RHS, PFS))
3466 if (!LHS->getType()->isIntOrIntVectorTy())
3467 return Error(Loc,"instruction requires integer or integer vector operands");
3469 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3475 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3476 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3477 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3479 // Parse the integer/fp comparison predicate.
3483 if (ParseCmpPredicate(Pred, Opc) ||
3484 ParseTypeAndValue(LHS, Loc, PFS) ||
3485 ParseToken(lltok::comma, "expected ',' after compare value") ||
3486 ParseValue(LHS->getType(), RHS, PFS))
3489 if (Opc == Instruction::FCmp) {
3490 if (!LHS->getType()->isFPOrFPVectorTy())
3491 return Error(Loc, "fcmp requires floating point operands");
3492 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3494 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
3495 if (!LHS->getType()->isIntOrIntVectorTy() &&
3496 !LHS->getType()->getScalarType()->isPointerTy())
3497 return Error(Loc, "icmp requires integer operands");
3498 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3503 //===----------------------------------------------------------------------===//
3504 // Other Instructions.
3505 //===----------------------------------------------------------------------===//
3509 /// ::= CastOpc TypeAndValue 'to' Type
3510 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
3515 if (ParseTypeAndValue(Op, Loc, PFS) ||
3516 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
3520 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
3521 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
3522 return Error(Loc, "invalid cast opcode for cast from '" +
3523 getTypeString(Op->getType()) + "' to '" +
3524 getTypeString(DestTy) + "'");
3526 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
3531 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3532 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
3534 Value *Op0, *Op1, *Op2;
3535 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3536 ParseToken(lltok::comma, "expected ',' after select condition") ||
3537 ParseTypeAndValue(Op1, PFS) ||
3538 ParseToken(lltok::comma, "expected ',' after select value") ||
3539 ParseTypeAndValue(Op2, PFS))
3542 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
3543 return Error(Loc, Reason);
3545 Inst = SelectInst::Create(Op0, Op1, Op2);
3550 /// ::= 'va_arg' TypeAndValue ',' Type
3551 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
3555 if (ParseTypeAndValue(Op, PFS) ||
3556 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
3557 ParseType(EltTy, TypeLoc))
3560 if (!EltTy->isFirstClassType())
3561 return Error(TypeLoc, "va_arg requires operand with first class type");
3563 Inst = new VAArgInst(Op, EltTy);
3567 /// ParseExtractElement
3568 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
3569 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
3572 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3573 ParseToken(lltok::comma, "expected ',' after extract value") ||
3574 ParseTypeAndValue(Op1, PFS))
3577 if (!ExtractElementInst::isValidOperands(Op0, Op1))
3578 return Error(Loc, "invalid extractelement operands");
3580 Inst = ExtractElementInst::Create(Op0, Op1);
3584 /// ParseInsertElement
3585 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3586 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
3588 Value *Op0, *Op1, *Op2;
3589 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3590 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3591 ParseTypeAndValue(Op1, PFS) ||
3592 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3593 ParseTypeAndValue(Op2, PFS))
3596 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
3597 return Error(Loc, "invalid insertelement operands");
3599 Inst = InsertElementInst::Create(Op0, Op1, Op2);
3603 /// ParseShuffleVector
3604 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3605 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
3607 Value *Op0, *Op1, *Op2;
3608 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3609 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
3610 ParseTypeAndValue(Op1, PFS) ||
3611 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
3612 ParseTypeAndValue(Op2, PFS))
3615 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
3616 return Error(Loc, "invalid shufflevector operands");
3618 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
3623 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
3624 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
3625 Type *Ty = 0; LocTy TypeLoc;
3628 if (ParseType(Ty, TypeLoc) ||
3629 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3630 ParseValue(Ty, Op0, PFS) ||
3631 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3632 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3633 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3636 bool AteExtraComma = false;
3637 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
3639 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
3641 if (!EatIfPresent(lltok::comma))
3644 if (Lex.getKind() == lltok::MetadataVar) {
3645 AteExtraComma = true;
3649 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3650 ParseValue(Ty, Op0, PFS) ||
3651 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3652 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3653 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3657 if (!Ty->isFirstClassType())
3658 return Error(TypeLoc, "phi node must have first class type");
3660 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
3661 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
3662 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
3664 return AteExtraComma ? InstExtraComma : InstNormal;
3668 /// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
3670 /// ::= 'catch' TypeAndValue
3672 /// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
3673 bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
3674 Type *Ty = 0; LocTy TyLoc;
3675 Value *PersFn; LocTy PersFnLoc;
3677 if (ParseType(Ty, TyLoc) ||
3678 ParseToken(lltok::kw_personality, "expected 'personality'") ||
3679 ParseTypeAndValue(PersFn, PersFnLoc, PFS))
3682 LandingPadInst *LP = LandingPadInst::Create(Ty, PersFn, 0);
3683 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
3685 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
3686 LandingPadInst::ClauseType CT;
3687 if (EatIfPresent(lltok::kw_catch))
3688 CT = LandingPadInst::Catch;
3689 else if (EatIfPresent(lltok::kw_filter))
3690 CT = LandingPadInst::Filter;
3692 return TokError("expected 'catch' or 'filter' clause type");
3694 Value *V; LocTy VLoc;
3695 if (ParseTypeAndValue(V, VLoc, PFS)) {
3700 // A 'catch' type expects a non-array constant. A filter clause expects an
3702 if (CT == LandingPadInst::Catch) {
3703 if (isa<ArrayType>(V->getType()))
3704 Error(VLoc, "'catch' clause has an invalid type");
3706 if (!isa<ArrayType>(V->getType()))
3707 Error(VLoc, "'filter' clause has an invalid type");
3718 /// ::= 'tail'? 'call' OptionalCallingConv OptionalAttrs Type Value
3719 /// ParameterList OptionalAttrs
3720 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
3722 AttrBuilder RetAttrs, FnAttrs;
3727 SmallVector<ParamInfo, 16> ArgList;
3728 LocTy CallLoc = Lex.getLoc();
3730 if ((isTail && ParseToken(lltok::kw_call, "expected 'tail call'")) ||
3731 ParseOptionalCallingConv(CC) ||
3732 ParseOptionalReturnAttrs(RetAttrs) ||
3733 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3734 ParseValID(CalleeID) ||
3735 ParseParameterList(ArgList, PFS) ||
3736 ParseOptionalFuncAttrs(FnAttrs))
3739 // If RetType is a non-function pointer type, then this is the short syntax
3740 // for the call, which means that RetType is just the return type. Infer the
3741 // rest of the function argument types from the arguments that are present.
3742 PointerType *PFTy = 0;
3743 FunctionType *Ty = 0;
3744 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3745 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3746 // Pull out the types of all of the arguments...
3747 std::vector<Type*> ParamTypes;
3748 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3749 ParamTypes.push_back(ArgList[i].V->getType());
3751 if (!FunctionType::isValidReturnType(RetType))
3752 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3754 Ty = FunctionType::get(RetType, ParamTypes, false);
3755 PFTy = PointerType::getUnqual(Ty);
3758 // Look up the callee.
3760 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3762 // Set up the Attribute for the function.
3763 SmallVector<AttributeSet, 8> Attrs;
3764 if (RetAttrs.hasAttributes())
3765 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3766 AttributeSet::ReturnIndex,
3769 SmallVector<Value*, 8> Args;
3771 // Loop through FunctionType's arguments and ensure they are specified
3772 // correctly. Also, gather any parameter attributes.
3773 FunctionType::param_iterator I = Ty->param_begin();
3774 FunctionType::param_iterator E = Ty->param_end();
3775 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3776 Type *ExpectedTy = 0;
3779 } else if (!Ty->isVarArg()) {
3780 return Error(ArgList[i].Loc, "too many arguments specified");
3783 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3784 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3785 getTypeString(ExpectedTy) + "'");
3786 Args.push_back(ArgList[i].V);
3787 if (ArgList[i].Attrs.hasAttributes()) {
3788 AttrBuilder B(ArgList[i].Attrs);
3789 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
3794 return Error(CallLoc, "not enough parameters specified for call");
3796 if (FnAttrs.hasAttributes())
3797 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3798 AttributeSet::FunctionIndex,
3801 // Finish off the Attribute and check them
3802 AttributeSet PAL = AttributeSet::get(Context, Attrs);
3804 CallInst *CI = CallInst::Create(Callee, Args);
3805 CI->setTailCall(isTail);
3806 CI->setCallingConv(CC);
3807 CI->setAttributes(PAL);
3812 //===----------------------------------------------------------------------===//
3813 // Memory Instructions.
3814 //===----------------------------------------------------------------------===//
3817 /// ::= 'alloca' Type (',' TypeAndValue)? (',' OptionalInfo)?
3818 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
3821 unsigned Alignment = 0;
3823 if (ParseType(Ty)) return true;
3825 bool AteExtraComma = false;
3826 if (EatIfPresent(lltok::comma)) {
3827 if (Lex.getKind() == lltok::kw_align) {
3828 if (ParseOptionalAlignment(Alignment)) return true;
3829 } else if (Lex.getKind() == lltok::MetadataVar) {
3830 AteExtraComma = true;
3832 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
3833 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3838 if (Size && !Size->getType()->isIntegerTy())
3839 return Error(SizeLoc, "element count must have integer type");
3841 Inst = new AllocaInst(Ty, Size, Alignment);
3842 return AteExtraComma ? InstExtraComma : InstNormal;
3846 /// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
3847 /// ::= 'load' 'atomic' 'volatile'? TypeAndValue
3848 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
3849 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
3850 Value *Val; LocTy Loc;
3851 unsigned Alignment = 0;
3852 bool AteExtraComma = false;
3853 bool isAtomic = false;
3854 AtomicOrdering Ordering = NotAtomic;
3855 SynchronizationScope Scope = CrossThread;
3857 if (Lex.getKind() == lltok::kw_atomic) {
3862 bool isVolatile = false;
3863 if (Lex.getKind() == lltok::kw_volatile) {
3868 if (ParseTypeAndValue(Val, Loc, PFS) ||
3869 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
3870 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3873 if (!Val->getType()->isPointerTy() ||
3874 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
3875 return Error(Loc, "load operand must be a pointer to a first class type");
3876 if (isAtomic && !Alignment)
3877 return Error(Loc, "atomic load must have explicit non-zero alignment");
3878 if (Ordering == Release || Ordering == AcquireRelease)
3879 return Error(Loc, "atomic load cannot use Release ordering");
3881 Inst = new LoadInst(Val, "", isVolatile, Alignment, Ordering, Scope);
3882 return AteExtraComma ? InstExtraComma : InstNormal;
3887 /// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
3888 /// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
3889 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
3890 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
3891 Value *Val, *Ptr; LocTy Loc, PtrLoc;
3892 unsigned Alignment = 0;
3893 bool AteExtraComma = false;
3894 bool isAtomic = false;
3895 AtomicOrdering Ordering = NotAtomic;
3896 SynchronizationScope Scope = CrossThread;
3898 if (Lex.getKind() == lltok::kw_atomic) {
3903 bool isVolatile = false;
3904 if (Lex.getKind() == lltok::kw_volatile) {
3909 if (ParseTypeAndValue(Val, Loc, PFS) ||
3910 ParseToken(lltok::comma, "expected ',' after store operand") ||
3911 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
3912 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
3913 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3916 if (!Ptr->getType()->isPointerTy())
3917 return Error(PtrLoc, "store operand must be a pointer");
3918 if (!Val->getType()->isFirstClassType())
3919 return Error(Loc, "store operand must be a first class value");
3920 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
3921 return Error(Loc, "stored value and pointer type do not match");
3922 if (isAtomic && !Alignment)
3923 return Error(Loc, "atomic store must have explicit non-zero alignment");
3924 if (Ordering == Acquire || Ordering == AcquireRelease)
3925 return Error(Loc, "atomic store cannot use Acquire ordering");
3927 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, Scope);
3928 return AteExtraComma ? InstExtraComma : InstNormal;
3932 /// ::= 'cmpxchg' 'volatile'? TypeAndValue ',' TypeAndValue ',' TypeAndValue
3933 /// 'singlethread'? AtomicOrdering
3934 int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
3935 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
3936 bool AteExtraComma = false;
3937 AtomicOrdering Ordering = NotAtomic;
3938 SynchronizationScope Scope = CrossThread;
3939 bool isVolatile = false;
3941 if (EatIfPresent(lltok::kw_volatile))
3944 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
3945 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
3946 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
3947 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
3948 ParseTypeAndValue(New, NewLoc, PFS) ||
3949 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
3952 if (Ordering == Unordered)
3953 return TokError("cmpxchg cannot be unordered");
3954 if (!Ptr->getType()->isPointerTy())
3955 return Error(PtrLoc, "cmpxchg operand must be a pointer");
3956 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
3957 return Error(CmpLoc, "compare value and pointer type do not match");
3958 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
3959 return Error(NewLoc, "new value and pointer type do not match");
3960 if (!New->getType()->isIntegerTy())
3961 return Error(NewLoc, "cmpxchg operand must be an integer");
3962 unsigned Size = New->getType()->getPrimitiveSizeInBits();
3963 if (Size < 8 || (Size & (Size - 1)))
3964 return Error(NewLoc, "cmpxchg operand must be power-of-two byte-sized"
3967 AtomicCmpXchgInst *CXI =
3968 new AtomicCmpXchgInst(Ptr, Cmp, New, Ordering, Scope);
3969 CXI->setVolatile(isVolatile);
3971 return AteExtraComma ? InstExtraComma : InstNormal;
3975 /// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
3976 /// 'singlethread'? AtomicOrdering
3977 int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
3978 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
3979 bool AteExtraComma = false;
3980 AtomicOrdering Ordering = NotAtomic;
3981 SynchronizationScope Scope = CrossThread;
3982 bool isVolatile = false;
3983 AtomicRMWInst::BinOp Operation;
3985 if (EatIfPresent(lltok::kw_volatile))
3988 switch (Lex.getKind()) {
3989 default: return TokError("expected binary operation in atomicrmw");
3990 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
3991 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
3992 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
3993 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
3994 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
3995 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
3996 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
3997 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
3998 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
3999 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
4000 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
4002 Lex.Lex(); // Eat the operation.
4004 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4005 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
4006 ParseTypeAndValue(Val, ValLoc, PFS) ||
4007 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4010 if (Ordering == Unordered)
4011 return TokError("atomicrmw cannot be unordered");
4012 if (!Ptr->getType()->isPointerTy())
4013 return Error(PtrLoc, "atomicrmw operand must be a pointer");
4014 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
4015 return Error(ValLoc, "atomicrmw value and pointer type do not match");
4016 if (!Val->getType()->isIntegerTy())
4017 return Error(ValLoc, "atomicrmw operand must be an integer");
4018 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
4019 if (Size < 8 || (Size & (Size - 1)))
4020 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
4023 AtomicRMWInst *RMWI =
4024 new AtomicRMWInst(Operation, Ptr, Val, Ordering, Scope);
4025 RMWI->setVolatile(isVolatile);
4027 return AteExtraComma ? InstExtraComma : InstNormal;
4031 /// ::= 'fence' 'singlethread'? AtomicOrdering
4032 int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
4033 AtomicOrdering Ordering = NotAtomic;
4034 SynchronizationScope Scope = CrossThread;
4035 if (ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4038 if (Ordering == Unordered)
4039 return TokError("fence cannot be unordered");
4040 if (Ordering == Monotonic)
4041 return TokError("fence cannot be monotonic");
4043 Inst = new FenceInst(Context, Ordering, Scope);
4047 /// ParseGetElementPtr
4048 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
4049 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
4054 bool InBounds = EatIfPresent(lltok::kw_inbounds);
4056 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
4058 if (!Ptr->getType()->getScalarType()->isPointerTy())
4059 return Error(Loc, "base of getelementptr must be a pointer");
4061 SmallVector<Value*, 16> Indices;
4062 bool AteExtraComma = false;
4063 while (EatIfPresent(lltok::comma)) {
4064 if (Lex.getKind() == lltok::MetadataVar) {
4065 AteExtraComma = true;
4068 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
4069 if (!Val->getType()->getScalarType()->isIntegerTy())
4070 return Error(EltLoc, "getelementptr index must be an integer");
4071 if (Val->getType()->isVectorTy() != Ptr->getType()->isVectorTy())
4072 return Error(EltLoc, "getelementptr index type missmatch");
4073 if (Val->getType()->isVectorTy()) {
4074 unsigned ValNumEl = cast<VectorType>(Val->getType())->getNumElements();
4075 unsigned PtrNumEl = cast<VectorType>(Ptr->getType())->getNumElements();
4076 if (ValNumEl != PtrNumEl)
4077 return Error(EltLoc,
4078 "getelementptr vector index has a wrong number of elements");
4080 Indices.push_back(Val);
4083 if (!GetElementPtrInst::getIndexedType(Ptr->getType(), Indices))
4084 return Error(Loc, "invalid getelementptr indices");
4085 Inst = GetElementPtrInst::Create(Ptr, Indices);
4087 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
4088 return AteExtraComma ? InstExtraComma : InstNormal;
4091 /// ParseExtractValue
4092 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
4093 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
4094 Value *Val; LocTy Loc;
4095 SmallVector<unsigned, 4> Indices;
4097 if (ParseTypeAndValue(Val, Loc, PFS) ||
4098 ParseIndexList(Indices, AteExtraComma))
4101 if (!Val->getType()->isAggregateType())
4102 return Error(Loc, "extractvalue operand must be aggregate type");
4104 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
4105 return Error(Loc, "invalid indices for extractvalue");
4106 Inst = ExtractValueInst::Create(Val, Indices);
4107 return AteExtraComma ? InstExtraComma : InstNormal;
4110 /// ParseInsertValue
4111 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
4112 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
4113 Value *Val0, *Val1; LocTy Loc0, Loc1;
4114 SmallVector<unsigned, 4> Indices;
4116 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
4117 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
4118 ParseTypeAndValue(Val1, Loc1, PFS) ||
4119 ParseIndexList(Indices, AteExtraComma))
4122 if (!Val0->getType()->isAggregateType())
4123 return Error(Loc0, "insertvalue operand must be aggregate type");
4125 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
4126 return Error(Loc0, "invalid indices for insertvalue");
4127 Inst = InsertValueInst::Create(Val0, Val1, Indices);
4128 return AteExtraComma ? InstExtraComma : InstNormal;
4131 //===----------------------------------------------------------------------===//
4132 // Embedded metadata.
4133 //===----------------------------------------------------------------------===//
4135 /// ParseMDNodeVector
4136 /// ::= Element (',' Element)*
4138 /// ::= 'null' | TypeAndValue
4139 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts,
4140 PerFunctionState *PFS) {
4141 // Check for an empty list.
4142 if (Lex.getKind() == lltok::rbrace)
4146 // Null is a special case since it is typeless.
4147 if (EatIfPresent(lltok::kw_null)) {
4153 if (ParseTypeAndValue(V, PFS)) return true;
4155 } while (EatIfPresent(lltok::comma));