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/AutoUpgrade.h"
16 #include "llvm/CallingConv.h"
17 #include "llvm/Constants.h"
18 #include "llvm/DerivedTypes.h"
19 #include "llvm/InlineAsm.h"
20 #include "llvm/Instructions.h"
21 #include "llvm/Module.h"
22 #include "llvm/Operator.h"
23 #include "llvm/ValueSymbolTable.h"
24 #include "llvm/ADT/SmallPtrSet.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: // OptionalLinkage
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_appending: // OptionalLinkage
194 case lltok::kw_dllexport: // OptionalLinkage
195 case lltok::kw_common: // OptionalLinkage
196 case lltok::kw_dllimport: // OptionalLinkage
197 case lltok::kw_extern_weak: // OptionalLinkage
198 case lltok::kw_external: { // OptionalLinkage
199 unsigned Linkage, Visibility;
200 if (ParseOptionalLinkage(Linkage) ||
201 ParseOptionalVisibility(Visibility) ||
202 ParseGlobal("", SMLoc(), Linkage, true, Visibility))
206 case lltok::kw_default: // OptionalVisibility
207 case lltok::kw_hidden: // OptionalVisibility
208 case lltok::kw_protected: { // OptionalVisibility
210 if (ParseOptionalVisibility(Visibility) ||
211 ParseGlobal("", SMLoc(), 0, false, Visibility))
216 case lltok::kw_thread_local: // OptionalThreadLocal
217 case lltok::kw_addrspace: // OptionalAddrSpace
218 case lltok::kw_constant: // GlobalType
219 case lltok::kw_global: // GlobalType
220 if (ParseGlobal("", SMLoc(), 0, false, 0)) return true;
228 /// ::= 'module' 'asm' STRINGCONSTANT
229 bool LLParser::ParseModuleAsm() {
230 assert(Lex.getKind() == lltok::kw_module);
234 if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
235 ParseStringConstant(AsmStr)) return true;
237 M->appendModuleInlineAsm(AsmStr);
242 /// ::= 'target' 'triple' '=' STRINGCONSTANT
243 /// ::= 'target' 'datalayout' '=' STRINGCONSTANT
244 bool LLParser::ParseTargetDefinition() {
245 assert(Lex.getKind() == lltok::kw_target);
248 default: return TokError("unknown target property");
249 case lltok::kw_triple:
251 if (ParseToken(lltok::equal, "expected '=' after target triple") ||
252 ParseStringConstant(Str))
254 M->setTargetTriple(Str);
256 case lltok::kw_datalayout:
258 if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
259 ParseStringConstant(Str))
261 M->setDataLayout(Str);
267 /// ::= 'deplibs' '=' '[' ']'
268 /// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
269 bool LLParser::ParseDepLibs() {
270 assert(Lex.getKind() == lltok::kw_deplibs);
272 if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
273 ParseToken(lltok::lsquare, "expected '=' after deplibs"))
276 if (EatIfPresent(lltok::rsquare))
280 if (ParseStringConstant(Str)) return true;
283 while (EatIfPresent(lltok::comma)) {
284 if (ParseStringConstant(Str)) return true;
288 return ParseToken(lltok::rsquare, "expected ']' at end of list");
291 /// ParseUnnamedType:
292 /// ::= LocalVarID '=' 'type' type
293 bool LLParser::ParseUnnamedType() {
294 LocTy TypeLoc = Lex.getLoc();
295 unsigned TypeID = Lex.getUIntVal();
296 Lex.Lex(); // eat LocalVarID;
298 if (ParseToken(lltok::equal, "expected '=' after name") ||
299 ParseToken(lltok::kw_type, "expected 'type' after '='"))
302 if (TypeID >= NumberedTypes.size())
303 NumberedTypes.resize(TypeID+1);
306 if (ParseStructDefinition(TypeLoc, "",
307 NumberedTypes[TypeID], Result)) return true;
309 if (!isa<StructType>(Result)) {
310 std::pair<Type*, LocTy> &Entry = NumberedTypes[TypeID];
312 return Error(TypeLoc, "non-struct types may not be recursive");
313 Entry.first = Result;
314 Entry.second = SMLoc();
322 /// ::= LocalVar '=' 'type' type
323 bool LLParser::ParseNamedType() {
324 std::string Name = Lex.getStrVal();
325 LocTy NameLoc = Lex.getLoc();
326 Lex.Lex(); // eat LocalVar.
328 if (ParseToken(lltok::equal, "expected '=' after name") ||
329 ParseToken(lltok::kw_type, "expected 'type' after name"))
333 if (ParseStructDefinition(NameLoc, Name,
334 NamedTypes[Name], Result)) return true;
336 if (!isa<StructType>(Result)) {
337 std::pair<Type*, LocTy> &Entry = NamedTypes[Name];
339 return Error(NameLoc, "non-struct types may not be recursive");
340 Entry.first = Result;
341 Entry.second = SMLoc();
349 /// ::= 'declare' FunctionHeader
350 bool LLParser::ParseDeclare() {
351 assert(Lex.getKind() == lltok::kw_declare);
355 return ParseFunctionHeader(F, false);
359 /// ::= 'define' FunctionHeader '{' ...
360 bool LLParser::ParseDefine() {
361 assert(Lex.getKind() == lltok::kw_define);
365 return ParseFunctionHeader(F, true) ||
366 ParseFunctionBody(*F);
372 bool LLParser::ParseGlobalType(bool &IsConstant) {
373 if (Lex.getKind() == lltok::kw_constant)
375 else if (Lex.getKind() == lltok::kw_global)
379 return TokError("expected 'global' or 'constant'");
385 /// ParseUnnamedGlobal:
386 /// OptionalVisibility ALIAS ...
387 /// OptionalLinkage OptionalVisibility ... -> global variable
388 /// GlobalID '=' OptionalVisibility ALIAS ...
389 /// GlobalID '=' OptionalLinkage OptionalVisibility ... -> global variable
390 bool LLParser::ParseUnnamedGlobal() {
391 unsigned VarID = NumberedVals.size();
393 LocTy NameLoc = Lex.getLoc();
395 // Handle the GlobalID form.
396 if (Lex.getKind() == lltok::GlobalID) {
397 if (Lex.getUIntVal() != VarID)
398 return Error(Lex.getLoc(), "variable expected to be numbered '%" +
400 Lex.Lex(); // eat GlobalID;
402 if (ParseToken(lltok::equal, "expected '=' after name"))
407 unsigned Linkage, Visibility;
408 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
409 ParseOptionalVisibility(Visibility))
412 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
413 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
414 return ParseAlias(Name, NameLoc, Visibility);
417 /// ParseNamedGlobal:
418 /// GlobalVar '=' OptionalVisibility ALIAS ...
419 /// GlobalVar '=' OptionalLinkage OptionalVisibility ... -> global variable
420 bool LLParser::ParseNamedGlobal() {
421 assert(Lex.getKind() == lltok::GlobalVar);
422 LocTy NameLoc = Lex.getLoc();
423 std::string Name = Lex.getStrVal();
427 unsigned Linkage, Visibility;
428 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
429 ParseOptionalLinkage(Linkage, HasLinkage) ||
430 ParseOptionalVisibility(Visibility))
433 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
434 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
435 return ParseAlias(Name, NameLoc, Visibility);
439 // ::= '!' STRINGCONSTANT
440 bool LLParser::ParseMDString(MDString *&Result) {
442 if (ParseStringConstant(Str)) return true;
443 Result = MDString::get(Context, Str);
448 // ::= '!' MDNodeNumber
450 /// This version of ParseMDNodeID returns the slot number and null in the case
451 /// of a forward reference.
452 bool LLParser::ParseMDNodeID(MDNode *&Result, unsigned &SlotNo) {
453 // !{ ..., !42, ... }
454 if (ParseUInt32(SlotNo)) return true;
456 // Check existing MDNode.
457 if (SlotNo < NumberedMetadata.size() && NumberedMetadata[SlotNo] != 0)
458 Result = NumberedMetadata[SlotNo];
464 bool LLParser::ParseMDNodeID(MDNode *&Result) {
465 // !{ ..., !42, ... }
467 if (ParseMDNodeID(Result, MID)) return true;
469 // If not a forward reference, just return it now.
470 if (Result) return false;
472 // Otherwise, create MDNode forward reference.
473 MDNode *FwdNode = MDNode::getTemporary(Context, ArrayRef<Value*>());
474 ForwardRefMDNodes[MID] = std::make_pair(FwdNode, Lex.getLoc());
476 if (NumberedMetadata.size() <= MID)
477 NumberedMetadata.resize(MID+1);
478 NumberedMetadata[MID] = FwdNode;
483 /// ParseNamedMetadata:
484 /// !foo = !{ !1, !2 }
485 bool LLParser::ParseNamedMetadata() {
486 assert(Lex.getKind() == lltok::MetadataVar);
487 std::string Name = Lex.getStrVal();
490 if (ParseToken(lltok::equal, "expected '=' here") ||
491 ParseToken(lltok::exclaim, "Expected '!' here") ||
492 ParseToken(lltok::lbrace, "Expected '{' here"))
495 NamedMDNode *NMD = M->getOrInsertNamedMetadata(Name);
496 if (Lex.getKind() != lltok::rbrace)
498 if (ParseToken(lltok::exclaim, "Expected '!' here"))
502 if (ParseMDNodeID(N)) return true;
504 } while (EatIfPresent(lltok::comma));
506 if (ParseToken(lltok::rbrace, "expected end of metadata node"))
512 /// ParseStandaloneMetadata:
514 bool LLParser::ParseStandaloneMetadata() {
515 assert(Lex.getKind() == lltok::exclaim);
517 unsigned MetadataID = 0;
521 SmallVector<Value *, 16> Elts;
522 if (ParseUInt32(MetadataID) ||
523 ParseToken(lltok::equal, "expected '=' here") ||
524 ParseType(Ty, TyLoc) ||
525 ParseToken(lltok::exclaim, "Expected '!' here") ||
526 ParseToken(lltok::lbrace, "Expected '{' here") ||
527 ParseMDNodeVector(Elts, NULL) ||
528 ParseToken(lltok::rbrace, "expected end of metadata node"))
531 MDNode *Init = MDNode::get(Context, Elts);
533 // See if this was forward referenced, if so, handle it.
534 std::map<unsigned, std::pair<TrackingVH<MDNode>, LocTy> >::iterator
535 FI = ForwardRefMDNodes.find(MetadataID);
536 if (FI != ForwardRefMDNodes.end()) {
537 MDNode *Temp = FI->second.first;
538 Temp->replaceAllUsesWith(Init);
539 MDNode::deleteTemporary(Temp);
540 ForwardRefMDNodes.erase(FI);
542 assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work");
544 if (MetadataID >= NumberedMetadata.size())
545 NumberedMetadata.resize(MetadataID+1);
547 if (NumberedMetadata[MetadataID] != 0)
548 return TokError("Metadata id is already used");
549 NumberedMetadata[MetadataID] = Init;
556 /// ::= GlobalVar '=' OptionalVisibility 'alias' OptionalLinkage Aliasee
559 /// ::= 'bitcast' '(' TypeAndValue 'to' Type ')'
560 /// ::= 'getelementptr' 'inbounds'? '(' ... ')'
562 /// Everything through visibility has already been parsed.
564 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc,
565 unsigned Visibility) {
566 assert(Lex.getKind() == lltok::kw_alias);
569 LocTy LinkageLoc = Lex.getLoc();
570 if (ParseOptionalLinkage(Linkage))
573 if (Linkage != GlobalValue::ExternalLinkage &&
574 Linkage != GlobalValue::WeakAnyLinkage &&
575 Linkage != GlobalValue::WeakODRLinkage &&
576 Linkage != GlobalValue::InternalLinkage &&
577 Linkage != GlobalValue::PrivateLinkage &&
578 Linkage != GlobalValue::LinkerPrivateLinkage &&
579 Linkage != GlobalValue::LinkerPrivateWeakLinkage &&
580 Linkage != GlobalValue::LinkerPrivateWeakDefAutoLinkage)
581 return Error(LinkageLoc, "invalid linkage type for alias");
584 LocTy AliaseeLoc = Lex.getLoc();
585 if (Lex.getKind() != lltok::kw_bitcast &&
586 Lex.getKind() != lltok::kw_getelementptr) {
587 if (ParseGlobalTypeAndValue(Aliasee)) return true;
589 // The bitcast dest type is not present, it is implied by the dest type.
591 if (ParseValID(ID)) return true;
592 if (ID.Kind != ValID::t_Constant)
593 return Error(AliaseeLoc, "invalid aliasee");
594 Aliasee = ID.ConstantVal;
597 if (!Aliasee->getType()->isPointerTy())
598 return Error(AliaseeLoc, "alias must have pointer type");
600 // Okay, create the alias but do not insert it into the module yet.
601 GlobalAlias* GA = new GlobalAlias(Aliasee->getType(),
602 (GlobalValue::LinkageTypes)Linkage, Name,
604 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
606 // See if this value already exists in the symbol table. If so, it is either
607 // a redefinition or a definition of a forward reference.
608 if (GlobalValue *Val = M->getNamedValue(Name)) {
609 // See if this was a redefinition. If so, there is no entry in
611 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
612 I = ForwardRefVals.find(Name);
613 if (I == ForwardRefVals.end())
614 return Error(NameLoc, "redefinition of global named '@" + Name + "'");
616 // Otherwise, this was a definition of forward ref. Verify that types
618 if (Val->getType() != GA->getType())
619 return Error(NameLoc,
620 "forward reference and definition of alias have different types");
622 // If they agree, just RAUW the old value with the alias and remove the
624 Val->replaceAllUsesWith(GA);
625 Val->eraseFromParent();
626 ForwardRefVals.erase(I);
629 // Insert into the module, we know its name won't collide now.
630 M->getAliasList().push_back(GA);
631 assert(GA->getName() == Name && "Should not be a name conflict!");
637 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalThreadLocal
638 /// OptionalAddrSpace OptionalUnNammedAddr GlobalType Type Const
639 /// ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
640 /// OptionalAddrSpace OptionalUnNammedAddr GlobalType Type Const
642 /// Everything through visibility has been parsed already.
644 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
645 unsigned Linkage, bool HasLinkage,
646 unsigned Visibility) {
648 bool ThreadLocal, IsConstant, UnnamedAddr;
649 LocTy UnnamedAddrLoc;
653 if (ParseOptionalToken(lltok::kw_thread_local, ThreadLocal) ||
654 ParseOptionalAddrSpace(AddrSpace) ||
655 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
657 ParseGlobalType(IsConstant) ||
658 ParseType(Ty, TyLoc))
661 // If the linkage is specified and is external, then no initializer is
664 if (!HasLinkage || (Linkage != GlobalValue::DLLImportLinkage &&
665 Linkage != GlobalValue::ExternalWeakLinkage &&
666 Linkage != GlobalValue::ExternalLinkage)) {
667 if (ParseGlobalValue(Ty, Init))
671 if (Ty->isFunctionTy() || Ty->isLabelTy())
672 return Error(TyLoc, "invalid type for global variable");
674 GlobalVariable *GV = 0;
676 // See if the global was forward referenced, if so, use the global.
678 if (GlobalValue *GVal = M->getNamedValue(Name)) {
679 if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
680 return Error(NameLoc, "redefinition of global '@" + Name + "'");
681 GV = cast<GlobalVariable>(GVal);
684 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
685 I = ForwardRefValIDs.find(NumberedVals.size());
686 if (I != ForwardRefValIDs.end()) {
687 GV = cast<GlobalVariable>(I->second.first);
688 ForwardRefValIDs.erase(I);
693 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, 0,
694 Name, 0, false, AddrSpace);
696 if (GV->getType()->getElementType() != Ty)
698 "forward reference and definition of global have different types");
700 // Move the forward-reference to the correct spot in the module.
701 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
705 NumberedVals.push_back(GV);
707 // Set the parsed properties on the global.
709 GV->setInitializer(Init);
710 GV->setConstant(IsConstant);
711 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
712 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
713 GV->setThreadLocal(ThreadLocal);
714 GV->setUnnamedAddr(UnnamedAddr);
716 // Parse attributes on the global.
717 while (Lex.getKind() == lltok::comma) {
720 if (Lex.getKind() == lltok::kw_section) {
722 GV->setSection(Lex.getStrVal());
723 if (ParseToken(lltok::StringConstant, "expected global section string"))
725 } else if (Lex.getKind() == lltok::kw_align) {
727 if (ParseOptionalAlignment(Alignment)) return true;
728 GV->setAlignment(Alignment);
730 TokError("unknown global variable property!");
738 //===----------------------------------------------------------------------===//
739 // GlobalValue Reference/Resolution Routines.
740 //===----------------------------------------------------------------------===//
742 /// GetGlobalVal - Get a value with the specified name or ID, creating a
743 /// forward reference record if needed. This can return null if the value
744 /// exists but does not have the right type.
745 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
747 PointerType *PTy = dyn_cast<PointerType>(Ty);
749 Error(Loc, "global variable reference must have pointer type");
753 // Look this name up in the normal function symbol table.
755 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
757 // If this is a forward reference for the value, see if we already created a
758 // forward ref record.
760 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
761 I = ForwardRefVals.find(Name);
762 if (I != ForwardRefVals.end())
763 Val = I->second.first;
766 // If we have the value in the symbol table or fwd-ref table, return it.
768 if (Val->getType() == Ty) return Val;
769 Error(Loc, "'@" + Name + "' defined with type '" +
770 getTypeString(Val->getType()) + "'");
774 // Otherwise, create a new forward reference for this value and remember it.
776 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
777 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
779 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
780 GlobalValue::ExternalWeakLinkage, 0, Name);
782 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
786 GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
787 PointerType *PTy = dyn_cast<PointerType>(Ty);
789 Error(Loc, "global variable reference must have pointer type");
793 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
795 // If this is a forward reference for the value, see if we already created a
796 // forward ref record.
798 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
799 I = ForwardRefValIDs.find(ID);
800 if (I != ForwardRefValIDs.end())
801 Val = I->second.first;
804 // If we have the value in the symbol table or fwd-ref table, return it.
806 if (Val->getType() == Ty) return Val;
807 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
808 getTypeString(Val->getType()) + "'");
812 // Otherwise, create a new forward reference for this value and remember it.
814 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
815 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
817 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
818 GlobalValue::ExternalWeakLinkage, 0, "");
820 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
825 //===----------------------------------------------------------------------===//
827 //===----------------------------------------------------------------------===//
829 /// ParseToken - If the current token has the specified kind, eat it and return
830 /// success. Otherwise, emit the specified error and return failure.
831 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
832 if (Lex.getKind() != T)
833 return TokError(ErrMsg);
838 /// ParseStringConstant
839 /// ::= StringConstant
840 bool LLParser::ParseStringConstant(std::string &Result) {
841 if (Lex.getKind() != lltok::StringConstant)
842 return TokError("expected string constant");
843 Result = Lex.getStrVal();
850 bool LLParser::ParseUInt32(unsigned &Val) {
851 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
852 return TokError("expected integer");
853 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
854 if (Val64 != unsigned(Val64))
855 return TokError("expected 32-bit integer (too large)");
862 /// ParseOptionalAddrSpace
864 /// := 'addrspace' '(' uint32 ')'
865 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
867 if (!EatIfPresent(lltok::kw_addrspace))
869 return ParseToken(lltok::lparen, "expected '(' in address space") ||
870 ParseUInt32(AddrSpace) ||
871 ParseToken(lltok::rparen, "expected ')' in address space");
874 /// ParseOptionalAttrs - Parse a potentially empty attribute list. AttrKind
875 /// indicates what kind of attribute list this is: 0: function arg, 1: result,
876 /// 2: function attr.
877 bool LLParser::ParseOptionalAttrs(Attributes &Attrs, unsigned AttrKind) {
878 Attrs = Attribute::None;
879 LocTy AttrLoc = Lex.getLoc();
882 switch (Lex.getKind()) {
883 default: // End of attributes.
884 if (AttrKind != 2 && (Attrs & Attribute::FunctionOnly))
885 return Error(AttrLoc, "invalid use of function-only attribute");
887 // As a hack, we allow "align 2" on functions as a synonym for
890 (Attrs & ~(Attribute::FunctionOnly | Attribute::Alignment)))
891 return Error(AttrLoc, "invalid use of attribute on a function");
893 if (AttrKind != 0 && (Attrs & Attribute::ParameterOnly))
894 return Error(AttrLoc, "invalid use of parameter-only attribute");
897 case lltok::kw_zeroext: Attrs |= Attribute::ZExt; break;
898 case lltok::kw_signext: Attrs |= Attribute::SExt; break;
899 case lltok::kw_inreg: Attrs |= Attribute::InReg; break;
900 case lltok::kw_sret: Attrs |= Attribute::StructRet; break;
901 case lltok::kw_noalias: Attrs |= Attribute::NoAlias; break;
902 case lltok::kw_nocapture: Attrs |= Attribute::NoCapture; break;
903 case lltok::kw_byval: Attrs |= Attribute::ByVal; break;
904 case lltok::kw_nest: Attrs |= Attribute::Nest; break;
906 case lltok::kw_noreturn: Attrs |= Attribute::NoReturn; break;
907 case lltok::kw_nounwind: Attrs |= Attribute::NoUnwind; break;
908 case lltok::kw_uwtable: Attrs |= Attribute::UWTable; break;
909 case lltok::kw_returns_twice: Attrs |= Attribute::ReturnsTwice; break;
910 case lltok::kw_noinline: Attrs |= Attribute::NoInline; break;
911 case lltok::kw_readnone: Attrs |= Attribute::ReadNone; break;
912 case lltok::kw_readonly: Attrs |= Attribute::ReadOnly; break;
913 case lltok::kw_inlinehint: Attrs |= Attribute::InlineHint; break;
914 case lltok::kw_alwaysinline: Attrs |= Attribute::AlwaysInline; break;
915 case lltok::kw_optsize: Attrs |= Attribute::OptimizeForSize; break;
916 case lltok::kw_ssp: Attrs |= Attribute::StackProtect; break;
917 case lltok::kw_sspreq: Attrs |= Attribute::StackProtectReq; break;
918 case lltok::kw_noredzone: Attrs |= Attribute::NoRedZone; break;
919 case lltok::kw_noimplicitfloat: Attrs |= Attribute::NoImplicitFloat; break;
920 case lltok::kw_naked: Attrs |= Attribute::Naked; break;
921 case lltok::kw_nonlazybind: Attrs |= Attribute::NonLazyBind; break;
922 case lltok::kw_address_safety: Attrs |= Attribute::AddressSafety; break;
924 case lltok::kw_alignstack: {
926 if (ParseOptionalStackAlignment(Alignment))
928 Attrs |= Attribute::constructStackAlignmentFromInt(Alignment);
932 case lltok::kw_align: {
934 if (ParseOptionalAlignment(Alignment))
936 Attrs |= Attribute::constructAlignmentFromInt(Alignment);
945 /// ParseOptionalLinkage
948 /// ::= 'linker_private'
949 /// ::= 'linker_private_weak'
950 /// ::= 'linker_private_weak_def_auto'
955 /// ::= 'linkonce_odr'
956 /// ::= 'available_externally'
961 /// ::= 'extern_weak'
963 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
965 switch (Lex.getKind()) {
966 default: Res=GlobalValue::ExternalLinkage; return false;
967 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
968 case lltok::kw_linker_private: Res = GlobalValue::LinkerPrivateLinkage; break;
969 case lltok::kw_linker_private_weak:
970 Res = GlobalValue::LinkerPrivateWeakLinkage;
972 case lltok::kw_linker_private_weak_def_auto:
973 Res = GlobalValue::LinkerPrivateWeakDefAutoLinkage;
975 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
976 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
977 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
978 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
979 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
980 case lltok::kw_available_externally:
981 Res = GlobalValue::AvailableExternallyLinkage;
983 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
984 case lltok::kw_dllexport: Res = GlobalValue::DLLExportLinkage; break;
985 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
986 case lltok::kw_dllimport: Res = GlobalValue::DLLImportLinkage; break;
987 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
988 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
995 /// ParseOptionalVisibility
1001 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1002 switch (Lex.getKind()) {
1003 default: Res = GlobalValue::DefaultVisibility; return false;
1004 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1005 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1006 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1012 /// ParseOptionalCallingConv
1017 /// ::= 'x86_stdcallcc'
1018 /// ::= 'x86_fastcallcc'
1019 /// ::= 'x86_thiscallcc'
1020 /// ::= 'arm_apcscc'
1021 /// ::= 'arm_aapcscc'
1022 /// ::= 'arm_aapcs_vfpcc'
1023 /// ::= 'msp430_intrcc'
1024 /// ::= 'ptx_kernel'
1025 /// ::= 'ptx_device'
1028 bool LLParser::ParseOptionalCallingConv(CallingConv::ID &CC) {
1029 switch (Lex.getKind()) {
1030 default: CC = CallingConv::C; return false;
1031 case lltok::kw_ccc: CC = CallingConv::C; break;
1032 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1033 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1034 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1035 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1036 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1037 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1038 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1039 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1040 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1041 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1042 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1043 case lltok::kw_cc: {
1044 unsigned ArbitraryCC;
1046 if (ParseUInt32(ArbitraryCC)) {
1049 CC = static_cast<CallingConv::ID>(ArbitraryCC);
1059 /// ParseInstructionMetadata
1060 /// ::= !dbg !42 (',' !dbg !57)*
1061 bool LLParser::ParseInstructionMetadata(Instruction *Inst,
1062 PerFunctionState *PFS) {
1064 if (Lex.getKind() != lltok::MetadataVar)
1065 return TokError("expected metadata after comma");
1067 std::string Name = Lex.getStrVal();
1068 unsigned MDK = M->getMDKindID(Name);
1072 SMLoc Loc = Lex.getLoc();
1074 if (ParseToken(lltok::exclaim, "expected '!' here"))
1077 // This code is similar to that of ParseMetadataValue, however it needs to
1078 // have special-case code for a forward reference; see the comments on
1079 // ForwardRefInstMetadata for details. Also, MDStrings are not supported
1080 // at the top level here.
1081 if (Lex.getKind() == lltok::lbrace) {
1083 if (ParseMetadataListValue(ID, PFS))
1085 assert(ID.Kind == ValID::t_MDNode);
1086 Inst->setMetadata(MDK, ID.MDNodeVal);
1088 unsigned NodeID = 0;
1089 if (ParseMDNodeID(Node, NodeID))
1092 // If we got the node, add it to the instruction.
1093 Inst->setMetadata(MDK, Node);
1095 MDRef R = { Loc, MDK, NodeID };
1096 // Otherwise, remember that this should be resolved later.
1097 ForwardRefInstMetadata[Inst].push_back(R);
1101 // If this is the end of the list, we're done.
1102 } while (EatIfPresent(lltok::comma));
1106 /// ParseOptionalAlignment
1109 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1111 if (!EatIfPresent(lltok::kw_align))
1113 LocTy AlignLoc = Lex.getLoc();
1114 if (ParseUInt32(Alignment)) return true;
1115 if (!isPowerOf2_32(Alignment))
1116 return Error(AlignLoc, "alignment is not a power of two");
1117 if (Alignment > Value::MaximumAlignment)
1118 return Error(AlignLoc, "huge alignments are not supported yet");
1122 /// ParseOptionalCommaAlign
1126 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1128 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1129 bool &AteExtraComma) {
1130 AteExtraComma = false;
1131 while (EatIfPresent(lltok::comma)) {
1132 // Metadata at the end is an early exit.
1133 if (Lex.getKind() == lltok::MetadataVar) {
1134 AteExtraComma = true;
1138 if (Lex.getKind() != lltok::kw_align)
1139 return Error(Lex.getLoc(), "expected metadata or 'align'");
1141 if (ParseOptionalAlignment(Alignment)) return true;
1147 /// ParseScopeAndOrdering
1148 /// if isAtomic: ::= 'singlethread'? AtomicOrdering
1151 /// This sets Scope and Ordering to the parsed values.
1152 bool LLParser::ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope,
1153 AtomicOrdering &Ordering) {
1157 Scope = CrossThread;
1158 if (EatIfPresent(lltok::kw_singlethread))
1159 Scope = SingleThread;
1160 switch (Lex.getKind()) {
1161 default: return TokError("Expected ordering on atomic instruction");
1162 case lltok::kw_unordered: Ordering = Unordered; break;
1163 case lltok::kw_monotonic: Ordering = Monotonic; break;
1164 case lltok::kw_acquire: Ordering = Acquire; break;
1165 case lltok::kw_release: Ordering = Release; break;
1166 case lltok::kw_acq_rel: Ordering = AcquireRelease; break;
1167 case lltok::kw_seq_cst: Ordering = SequentiallyConsistent; break;
1173 /// ParseOptionalStackAlignment
1175 /// ::= 'alignstack' '(' 4 ')'
1176 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1178 if (!EatIfPresent(lltok::kw_alignstack))
1180 LocTy ParenLoc = Lex.getLoc();
1181 if (!EatIfPresent(lltok::lparen))
1182 return Error(ParenLoc, "expected '('");
1183 LocTy AlignLoc = Lex.getLoc();
1184 if (ParseUInt32(Alignment)) return true;
1185 ParenLoc = Lex.getLoc();
1186 if (!EatIfPresent(lltok::rparen))
1187 return Error(ParenLoc, "expected ')'");
1188 if (!isPowerOf2_32(Alignment))
1189 return Error(AlignLoc, "stack alignment is not a power of two");
1193 /// ParseIndexList - This parses the index list for an insert/extractvalue
1194 /// instruction. This sets AteExtraComma in the case where we eat an extra
1195 /// comma at the end of the line and find that it is followed by metadata.
1196 /// Clients that don't allow metadata can call the version of this function that
1197 /// only takes one argument.
1200 /// ::= (',' uint32)+
1202 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1203 bool &AteExtraComma) {
1204 AteExtraComma = false;
1206 if (Lex.getKind() != lltok::comma)
1207 return TokError("expected ',' as start of index list");
1209 while (EatIfPresent(lltok::comma)) {
1210 if (Lex.getKind() == lltok::MetadataVar) {
1211 AteExtraComma = true;
1215 if (ParseUInt32(Idx)) return true;
1216 Indices.push_back(Idx);
1222 //===----------------------------------------------------------------------===//
1224 //===----------------------------------------------------------------------===//
1226 /// ParseType - Parse a type.
1227 bool LLParser::ParseType(Type *&Result, bool AllowVoid) {
1228 SMLoc TypeLoc = Lex.getLoc();
1229 switch (Lex.getKind()) {
1231 return TokError("expected type");
1233 // Type ::= 'float' | 'void' (etc)
1234 Result = Lex.getTyVal();
1238 // Type ::= StructType
1239 if (ParseAnonStructType(Result, false))
1242 case lltok::lsquare:
1243 // Type ::= '[' ... ']'
1244 Lex.Lex(); // eat the lsquare.
1245 if (ParseArrayVectorType(Result, false))
1248 case lltok::less: // Either vector or packed struct.
1249 // Type ::= '<' ... '>'
1251 if (Lex.getKind() == lltok::lbrace) {
1252 if (ParseAnonStructType(Result, true) ||
1253 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1255 } else if (ParseArrayVectorType(Result, true))
1258 case lltok::LocalVar: {
1260 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
1262 // If the type hasn't been defined yet, create a forward definition and
1263 // remember where that forward def'n was seen (in case it never is defined).
1264 if (Entry.first == 0) {
1265 Entry.first = StructType::create(Context, Lex.getStrVal());
1266 Entry.second = Lex.getLoc();
1268 Result = Entry.first;
1273 case lltok::LocalVarID: {
1275 if (Lex.getUIntVal() >= NumberedTypes.size())
1276 NumberedTypes.resize(Lex.getUIntVal()+1);
1277 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
1279 // If the type hasn't been defined yet, create a forward definition and
1280 // remember where that forward def'n was seen (in case it never is defined).
1281 if (Entry.first == 0) {
1282 Entry.first = StructType::create(Context);
1283 Entry.second = Lex.getLoc();
1285 Result = Entry.first;
1291 // Parse the type suffixes.
1293 switch (Lex.getKind()) {
1296 if (!AllowVoid && Result->isVoidTy())
1297 return Error(TypeLoc, "void type only allowed for function results");
1300 // Type ::= Type '*'
1302 if (Result->isLabelTy())
1303 return TokError("basic block pointers are invalid");
1304 if (Result->isVoidTy())
1305 return TokError("pointers to void are invalid - use i8* instead");
1306 if (!PointerType::isValidElementType(Result))
1307 return TokError("pointer to this type is invalid");
1308 Result = PointerType::getUnqual(Result);
1312 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
1313 case lltok::kw_addrspace: {
1314 if (Result->isLabelTy())
1315 return TokError("basic block pointers are invalid");
1316 if (Result->isVoidTy())
1317 return TokError("pointers to void are invalid; use i8* instead");
1318 if (!PointerType::isValidElementType(Result))
1319 return TokError("pointer to this type is invalid");
1321 if (ParseOptionalAddrSpace(AddrSpace) ||
1322 ParseToken(lltok::star, "expected '*' in address space"))
1325 Result = PointerType::get(Result, AddrSpace);
1329 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1331 if (ParseFunctionType(Result))
1338 /// ParseParameterList
1340 /// ::= '(' Arg (',' Arg)* ')'
1342 /// ::= Type OptionalAttributes Value OptionalAttributes
1343 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1344 PerFunctionState &PFS) {
1345 if (ParseToken(lltok::lparen, "expected '(' in call"))
1348 while (Lex.getKind() != lltok::rparen) {
1349 // If this isn't the first argument, we need a comma.
1350 if (!ArgList.empty() &&
1351 ParseToken(lltok::comma, "expected ',' in argument list"))
1354 // Parse the argument.
1357 Attributes ArgAttrs1;
1358 Attributes ArgAttrs2;
1360 if (ParseType(ArgTy, ArgLoc))
1363 // Otherwise, handle normal operands.
1364 if (ParseOptionalAttrs(ArgAttrs1, 0) || ParseValue(ArgTy, V, PFS))
1366 ArgList.push_back(ParamInfo(ArgLoc, V, ArgAttrs1|ArgAttrs2));
1369 Lex.Lex(); // Lex the ')'.
1375 /// ParseArgumentList - Parse the argument list for a function type or function
1377 /// ::= '(' ArgTypeListI ')'
1381 /// ::= ArgTypeList ',' '...'
1382 /// ::= ArgType (',' ArgType)*
1384 bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
1387 assert(Lex.getKind() == lltok::lparen);
1388 Lex.Lex(); // eat the (.
1390 if (Lex.getKind() == lltok::rparen) {
1392 } else if (Lex.getKind() == lltok::dotdotdot) {
1396 LocTy TypeLoc = Lex.getLoc();
1401 if (ParseType(ArgTy) ||
1402 ParseOptionalAttrs(Attrs, 0)) return true;
1404 if (ArgTy->isVoidTy())
1405 return Error(TypeLoc, "argument can not have void type");
1407 if (Lex.getKind() == lltok::LocalVar) {
1408 Name = Lex.getStrVal();
1412 if (!FunctionType::isValidArgumentType(ArgTy))
1413 return Error(TypeLoc, "invalid type for function argument");
1415 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1417 while (EatIfPresent(lltok::comma)) {
1418 // Handle ... at end of arg list.
1419 if (EatIfPresent(lltok::dotdotdot)) {
1424 // Otherwise must be an argument type.
1425 TypeLoc = Lex.getLoc();
1426 if (ParseType(ArgTy) || ParseOptionalAttrs(Attrs, 0)) return true;
1428 if (ArgTy->isVoidTy())
1429 return Error(TypeLoc, "argument can not have void type");
1431 if (Lex.getKind() == lltok::LocalVar) {
1432 Name = Lex.getStrVal();
1438 if (!ArgTy->isFirstClassType())
1439 return Error(TypeLoc, "invalid type for function argument");
1441 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1445 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1448 /// ParseFunctionType
1449 /// ::= Type ArgumentList OptionalAttrs
1450 bool LLParser::ParseFunctionType(Type *&Result) {
1451 assert(Lex.getKind() == lltok::lparen);
1453 if (!FunctionType::isValidReturnType(Result))
1454 return TokError("invalid function return type");
1456 SmallVector<ArgInfo, 8> ArgList;
1458 if (ParseArgumentList(ArgList, isVarArg))
1461 // Reject names on the arguments lists.
1462 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1463 if (!ArgList[i].Name.empty())
1464 return Error(ArgList[i].Loc, "argument name invalid in function type");
1465 if (ArgList[i].Attrs)
1466 return Error(ArgList[i].Loc,
1467 "argument attributes invalid in function type");
1470 SmallVector<Type*, 16> ArgListTy;
1471 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1472 ArgListTy.push_back(ArgList[i].Ty);
1474 Result = FunctionType::get(Result, ArgListTy, isVarArg);
1478 /// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
1480 bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
1481 SmallVector<Type*, 8> Elts;
1482 if (ParseStructBody(Elts)) return true;
1484 Result = StructType::get(Context, Elts, Packed);
1488 /// ParseStructDefinition - Parse a struct in a 'type' definition.
1489 bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
1490 std::pair<Type*, LocTy> &Entry,
1492 // If the type was already defined, diagnose the redefinition.
1493 if (Entry.first && !Entry.second.isValid())
1494 return Error(TypeLoc, "redefinition of type");
1496 // If we have opaque, just return without filling in the definition for the
1497 // struct. This counts as a definition as far as the .ll file goes.
1498 if (EatIfPresent(lltok::kw_opaque)) {
1499 // This type is being defined, so clear the location to indicate this.
1500 Entry.second = SMLoc();
1502 // If this type number has never been uttered, create it.
1503 if (Entry.first == 0)
1504 Entry.first = StructType::create(Context, Name);
1505 ResultTy = Entry.first;
1509 // If the type starts with '<', then it is either a packed struct or a vector.
1510 bool isPacked = EatIfPresent(lltok::less);
1512 // If we don't have a struct, then we have a random type alias, which we
1513 // accept for compatibility with old files. These types are not allowed to be
1514 // forward referenced and not allowed to be recursive.
1515 if (Lex.getKind() != lltok::lbrace) {
1517 return Error(TypeLoc, "forward references to non-struct type");
1521 return ParseArrayVectorType(ResultTy, true);
1522 return ParseType(ResultTy);
1525 // This type is being defined, so clear the location to indicate this.
1526 Entry.second = SMLoc();
1528 // If this type number has never been uttered, create it.
1529 if (Entry.first == 0)
1530 Entry.first = StructType::create(Context, Name);
1532 StructType *STy = cast<StructType>(Entry.first);
1534 SmallVector<Type*, 8> Body;
1535 if (ParseStructBody(Body) ||
1536 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
1539 STy->setBody(Body, isPacked);
1545 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
1548 /// ::= '{' Type (',' Type)* '}'
1549 /// ::= '<' '{' '}' '>'
1550 /// ::= '<' '{' Type (',' Type)* '}' '>'
1551 bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
1552 assert(Lex.getKind() == lltok::lbrace);
1553 Lex.Lex(); // Consume the '{'
1555 // Handle the empty struct.
1556 if (EatIfPresent(lltok::rbrace))
1559 LocTy EltTyLoc = Lex.getLoc();
1561 if (ParseType(Ty)) return true;
1564 if (!StructType::isValidElementType(Ty))
1565 return Error(EltTyLoc, "invalid element type for struct");
1567 while (EatIfPresent(lltok::comma)) {
1568 EltTyLoc = Lex.getLoc();
1569 if (ParseType(Ty)) return true;
1571 if (!StructType::isValidElementType(Ty))
1572 return Error(EltTyLoc, "invalid element type for struct");
1577 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
1580 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
1581 /// token has already been consumed.
1583 /// ::= '[' APSINTVAL 'x' Types ']'
1584 /// ::= '<' APSINTVAL 'x' Types '>'
1585 bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
1586 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
1587 Lex.getAPSIntVal().getBitWidth() > 64)
1588 return TokError("expected number in address space");
1590 LocTy SizeLoc = Lex.getLoc();
1591 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
1594 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
1597 LocTy TypeLoc = Lex.getLoc();
1599 if (ParseType(EltTy)) return true;
1601 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
1602 "expected end of sequential type"))
1607 return Error(SizeLoc, "zero element vector is illegal");
1608 if ((unsigned)Size != Size)
1609 return Error(SizeLoc, "size too large for vector");
1610 if (!VectorType::isValidElementType(EltTy))
1611 return Error(TypeLoc,
1612 "vector element type must be fp, integer or a pointer to these types");
1613 Result = VectorType::get(EltTy, unsigned(Size));
1615 if (!ArrayType::isValidElementType(EltTy))
1616 return Error(TypeLoc, "invalid array element type");
1617 Result = ArrayType::get(EltTy, Size);
1622 //===----------------------------------------------------------------------===//
1623 // Function Semantic Analysis.
1624 //===----------------------------------------------------------------------===//
1626 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
1628 : P(p), F(f), FunctionNumber(functionNumber) {
1630 // Insert unnamed arguments into the NumberedVals list.
1631 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
1634 NumberedVals.push_back(AI);
1637 LLParser::PerFunctionState::~PerFunctionState() {
1638 // If there were any forward referenced non-basicblock values, delete them.
1639 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
1640 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
1641 if (!isa<BasicBlock>(I->second.first)) {
1642 I->second.first->replaceAllUsesWith(
1643 UndefValue::get(I->second.first->getType()));
1644 delete I->second.first;
1645 I->second.first = 0;
1648 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1649 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
1650 if (!isa<BasicBlock>(I->second.first)) {
1651 I->second.first->replaceAllUsesWith(
1652 UndefValue::get(I->second.first->getType()));
1653 delete I->second.first;
1654 I->second.first = 0;
1658 bool LLParser::PerFunctionState::FinishFunction() {
1659 // Check to see if someone took the address of labels in this block.
1660 if (!P.ForwardRefBlockAddresses.empty()) {
1662 if (!F.getName().empty()) {
1663 FunctionID.Kind = ValID::t_GlobalName;
1664 FunctionID.StrVal = F.getName();
1666 FunctionID.Kind = ValID::t_GlobalID;
1667 FunctionID.UIntVal = FunctionNumber;
1670 std::map<ValID, std::vector<std::pair<ValID, GlobalValue*> > >::iterator
1671 FRBAI = P.ForwardRefBlockAddresses.find(FunctionID);
1672 if (FRBAI != P.ForwardRefBlockAddresses.end()) {
1673 // Resolve all these references.
1674 if (P.ResolveForwardRefBlockAddresses(&F, FRBAI->second, this))
1677 P.ForwardRefBlockAddresses.erase(FRBAI);
1681 if (!ForwardRefVals.empty())
1682 return P.Error(ForwardRefVals.begin()->second.second,
1683 "use of undefined value '%" + ForwardRefVals.begin()->first +
1685 if (!ForwardRefValIDs.empty())
1686 return P.Error(ForwardRefValIDs.begin()->second.second,
1687 "use of undefined value '%" +
1688 Twine(ForwardRefValIDs.begin()->first) + "'");
1693 /// GetVal - Get a value with the specified name or ID, creating a
1694 /// forward reference record if needed. This can return null if the value
1695 /// exists but does not have the right type.
1696 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
1697 Type *Ty, LocTy Loc) {
1698 // Look this name up in the normal function symbol table.
1699 Value *Val = F.getValueSymbolTable().lookup(Name);
1701 // If this is a forward reference for the value, see if we already created a
1702 // forward ref record.
1704 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1705 I = ForwardRefVals.find(Name);
1706 if (I != ForwardRefVals.end())
1707 Val = I->second.first;
1710 // If we have the value in the symbol table or fwd-ref table, return it.
1712 if (Val->getType() == Ty) return Val;
1713 if (Ty->isLabelTy())
1714 P.Error(Loc, "'%" + Name + "' is not a basic block");
1716 P.Error(Loc, "'%" + Name + "' defined with type '" +
1717 getTypeString(Val->getType()) + "'");
1721 // Don't make placeholders with invalid type.
1722 if (!Ty->isFirstClassType() && !Ty->isLabelTy()) {
1723 P.Error(Loc, "invalid use of a non-first-class type");
1727 // Otherwise, create a new forward reference for this value and remember it.
1729 if (Ty->isLabelTy())
1730 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
1732 FwdVal = new Argument(Ty, Name);
1734 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1738 Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty,
1740 // Look this name up in the normal function symbol table.
1741 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
1743 // If this is a forward reference for the value, see if we already created a
1744 // forward ref record.
1746 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1747 I = ForwardRefValIDs.find(ID);
1748 if (I != ForwardRefValIDs.end())
1749 Val = I->second.first;
1752 // If we have the value in the symbol table or fwd-ref table, return it.
1754 if (Val->getType() == Ty) return Val;
1755 if (Ty->isLabelTy())
1756 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
1758 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
1759 getTypeString(Val->getType()) + "'");
1763 if (!Ty->isFirstClassType() && !Ty->isLabelTy()) {
1764 P.Error(Loc, "invalid use of a non-first-class type");
1768 // Otherwise, create a new forward reference for this value and remember it.
1770 if (Ty->isLabelTy())
1771 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
1773 FwdVal = new Argument(Ty);
1775 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1779 /// SetInstName - After an instruction is parsed and inserted into its
1780 /// basic block, this installs its name.
1781 bool LLParser::PerFunctionState::SetInstName(int NameID,
1782 const std::string &NameStr,
1783 LocTy NameLoc, Instruction *Inst) {
1784 // If this instruction has void type, it cannot have a name or ID specified.
1785 if (Inst->getType()->isVoidTy()) {
1786 if (NameID != -1 || !NameStr.empty())
1787 return P.Error(NameLoc, "instructions returning void cannot have a name");
1791 // If this was a numbered instruction, verify that the instruction is the
1792 // expected value and resolve any forward references.
1793 if (NameStr.empty()) {
1794 // If neither a name nor an ID was specified, just use the next ID.
1796 NameID = NumberedVals.size();
1798 if (unsigned(NameID) != NumberedVals.size())
1799 return P.Error(NameLoc, "instruction expected to be numbered '%" +
1800 Twine(NumberedVals.size()) + "'");
1802 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
1803 ForwardRefValIDs.find(NameID);
1804 if (FI != ForwardRefValIDs.end()) {
1805 if (FI->second.first->getType() != Inst->getType())
1806 return P.Error(NameLoc, "instruction forward referenced with type '" +
1807 getTypeString(FI->second.first->getType()) + "'");
1808 FI->second.first->replaceAllUsesWith(Inst);
1809 delete FI->second.first;
1810 ForwardRefValIDs.erase(FI);
1813 NumberedVals.push_back(Inst);
1817 // Otherwise, the instruction had a name. Resolve forward refs and set it.
1818 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1819 FI = ForwardRefVals.find(NameStr);
1820 if (FI != ForwardRefVals.end()) {
1821 if (FI->second.first->getType() != Inst->getType())
1822 return P.Error(NameLoc, "instruction forward referenced with type '" +
1823 getTypeString(FI->second.first->getType()) + "'");
1824 FI->second.first->replaceAllUsesWith(Inst);
1825 delete FI->second.first;
1826 ForwardRefVals.erase(FI);
1829 // Set the name on the instruction.
1830 Inst->setName(NameStr);
1832 if (Inst->getName() != NameStr)
1833 return P.Error(NameLoc, "multiple definition of local value named '" +
1838 /// GetBB - Get a basic block with the specified name or ID, creating a
1839 /// forward reference record if needed.
1840 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
1842 return cast_or_null<BasicBlock>(GetVal(Name,
1843 Type::getLabelTy(F.getContext()), Loc));
1846 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
1847 return cast_or_null<BasicBlock>(GetVal(ID,
1848 Type::getLabelTy(F.getContext()), Loc));
1851 /// DefineBB - Define the specified basic block, which is either named or
1852 /// unnamed. If there is an error, this returns null otherwise it returns
1853 /// the block being defined.
1854 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
1858 BB = GetBB(NumberedVals.size(), Loc);
1860 BB = GetBB(Name, Loc);
1861 if (BB == 0) return 0; // Already diagnosed error.
1863 // Move the block to the end of the function. Forward ref'd blocks are
1864 // inserted wherever they happen to be referenced.
1865 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
1867 // Remove the block from forward ref sets.
1869 ForwardRefValIDs.erase(NumberedVals.size());
1870 NumberedVals.push_back(BB);
1872 // BB forward references are already in the function symbol table.
1873 ForwardRefVals.erase(Name);
1879 //===----------------------------------------------------------------------===//
1881 //===----------------------------------------------------------------------===//
1883 /// ParseValID - Parse an abstract value that doesn't necessarily have a
1884 /// type implied. For example, if we parse "4" we don't know what integer type
1885 /// it has. The value will later be combined with its type and checked for
1886 /// sanity. PFS is used to convert function-local operands of metadata (since
1887 /// metadata operands are not just parsed here but also converted to values).
1888 /// PFS can be null when we are not parsing metadata values inside a function.
1889 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
1890 ID.Loc = Lex.getLoc();
1891 switch (Lex.getKind()) {
1892 default: return TokError("expected value token");
1893 case lltok::GlobalID: // @42
1894 ID.UIntVal = Lex.getUIntVal();
1895 ID.Kind = ValID::t_GlobalID;
1897 case lltok::GlobalVar: // @foo
1898 ID.StrVal = Lex.getStrVal();
1899 ID.Kind = ValID::t_GlobalName;
1901 case lltok::LocalVarID: // %42
1902 ID.UIntVal = Lex.getUIntVal();
1903 ID.Kind = ValID::t_LocalID;
1905 case lltok::LocalVar: // %foo
1906 ID.StrVal = Lex.getStrVal();
1907 ID.Kind = ValID::t_LocalName;
1909 case lltok::exclaim: // !42, !{...}, or !"foo"
1910 return ParseMetadataValue(ID, PFS);
1912 ID.APSIntVal = Lex.getAPSIntVal();
1913 ID.Kind = ValID::t_APSInt;
1915 case lltok::APFloat:
1916 ID.APFloatVal = Lex.getAPFloatVal();
1917 ID.Kind = ValID::t_APFloat;
1919 case lltok::kw_true:
1920 ID.ConstantVal = ConstantInt::getTrue(Context);
1921 ID.Kind = ValID::t_Constant;
1923 case lltok::kw_false:
1924 ID.ConstantVal = ConstantInt::getFalse(Context);
1925 ID.Kind = ValID::t_Constant;
1927 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
1928 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
1929 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
1931 case lltok::lbrace: {
1932 // ValID ::= '{' ConstVector '}'
1934 SmallVector<Constant*, 16> Elts;
1935 if (ParseGlobalValueVector(Elts) ||
1936 ParseToken(lltok::rbrace, "expected end of struct constant"))
1939 ID.ConstantStructElts = new Constant*[Elts.size()];
1940 ID.UIntVal = Elts.size();
1941 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
1942 ID.Kind = ValID::t_ConstantStruct;
1946 // ValID ::= '<' ConstVector '>' --> Vector.
1947 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
1949 bool isPackedStruct = EatIfPresent(lltok::lbrace);
1951 SmallVector<Constant*, 16> Elts;
1952 LocTy FirstEltLoc = Lex.getLoc();
1953 if (ParseGlobalValueVector(Elts) ||
1955 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
1956 ParseToken(lltok::greater, "expected end of constant"))
1959 if (isPackedStruct) {
1960 ID.ConstantStructElts = new Constant*[Elts.size()];
1961 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
1962 ID.UIntVal = Elts.size();
1963 ID.Kind = ValID::t_PackedConstantStruct;
1968 return Error(ID.Loc, "constant vector must not be empty");
1970 if (!Elts[0]->getType()->isIntegerTy() &&
1971 !Elts[0]->getType()->isFloatingPointTy() &&
1972 !Elts[0]->getType()->isPointerTy())
1973 return Error(FirstEltLoc,
1974 "vector elements must have integer, pointer or floating point type");
1976 // Verify that all the vector elements have the same type.
1977 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
1978 if (Elts[i]->getType() != Elts[0]->getType())
1979 return Error(FirstEltLoc,
1980 "vector element #" + Twine(i) +
1981 " is not of type '" + getTypeString(Elts[0]->getType()));
1983 ID.ConstantVal = ConstantVector::get(Elts);
1984 ID.Kind = ValID::t_Constant;
1987 case lltok::lsquare: { // Array Constant
1989 SmallVector<Constant*, 16> Elts;
1990 LocTy FirstEltLoc = Lex.getLoc();
1991 if (ParseGlobalValueVector(Elts) ||
1992 ParseToken(lltok::rsquare, "expected end of array constant"))
1995 // Handle empty element.
1997 // Use undef instead of an array because it's inconvenient to determine
1998 // the element type at this point, there being no elements to examine.
1999 ID.Kind = ValID::t_EmptyArray;
2003 if (!Elts[0]->getType()->isFirstClassType())
2004 return Error(FirstEltLoc, "invalid array element type: " +
2005 getTypeString(Elts[0]->getType()));
2007 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2009 // Verify all elements are correct type!
2010 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2011 if (Elts[i]->getType() != Elts[0]->getType())
2012 return Error(FirstEltLoc,
2013 "array element #" + Twine(i) +
2014 " is not of type '" + getTypeString(Elts[0]->getType()));
2017 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2018 ID.Kind = ValID::t_Constant;
2021 case lltok::kw_c: // c "foo"
2023 ID.ConstantVal = ConstantArray::get(Context, Lex.getStrVal(), false);
2024 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2025 ID.Kind = ValID::t_Constant;
2028 case lltok::kw_asm: {
2029 // ValID ::= 'asm' SideEffect? AlignStack? STRINGCONSTANT ',' STRINGCONSTANT
2030 bool HasSideEffect, AlignStack;
2032 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2033 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2034 ParseStringConstant(ID.StrVal) ||
2035 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2036 ParseToken(lltok::StringConstant, "expected constraint string"))
2038 ID.StrVal2 = Lex.getStrVal();
2039 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1);
2040 ID.Kind = ValID::t_InlineAsm;
2044 case lltok::kw_blockaddress: {
2045 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2049 LocTy FnLoc, LabelLoc;
2051 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2053 ParseToken(lltok::comma, "expected comma in block address expression")||
2054 ParseValID(Label) ||
2055 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2058 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2059 return Error(Fn.Loc, "expected function name in blockaddress");
2060 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2061 return Error(Label.Loc, "expected basic block name in blockaddress");
2063 // Make a global variable as a placeholder for this reference.
2064 GlobalVariable *FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context),
2065 false, GlobalValue::InternalLinkage,
2067 ForwardRefBlockAddresses[Fn].push_back(std::make_pair(Label, FwdRef));
2068 ID.ConstantVal = FwdRef;
2069 ID.Kind = ValID::t_Constant;
2073 case lltok::kw_trunc:
2074 case lltok::kw_zext:
2075 case lltok::kw_sext:
2076 case lltok::kw_fptrunc:
2077 case lltok::kw_fpext:
2078 case lltok::kw_bitcast:
2079 case lltok::kw_uitofp:
2080 case lltok::kw_sitofp:
2081 case lltok::kw_fptoui:
2082 case lltok::kw_fptosi:
2083 case lltok::kw_inttoptr:
2084 case lltok::kw_ptrtoint: {
2085 unsigned Opc = Lex.getUIntVal();
2089 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2090 ParseGlobalTypeAndValue(SrcVal) ||
2091 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2092 ParseType(DestTy) ||
2093 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2095 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2096 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2097 getTypeString(SrcVal->getType()) + "' to '" +
2098 getTypeString(DestTy) + "'");
2099 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2101 ID.Kind = ValID::t_Constant;
2104 case lltok::kw_extractvalue: {
2107 SmallVector<unsigned, 4> Indices;
2108 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2109 ParseGlobalTypeAndValue(Val) ||
2110 ParseIndexList(Indices) ||
2111 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2114 if (!Val->getType()->isAggregateType())
2115 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2116 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
2117 return Error(ID.Loc, "invalid indices for extractvalue");
2118 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
2119 ID.Kind = ValID::t_Constant;
2122 case lltok::kw_insertvalue: {
2124 Constant *Val0, *Val1;
2125 SmallVector<unsigned, 4> Indices;
2126 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2127 ParseGlobalTypeAndValue(Val0) ||
2128 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2129 ParseGlobalTypeAndValue(Val1) ||
2130 ParseIndexList(Indices) ||
2131 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2133 if (!Val0->getType()->isAggregateType())
2134 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2135 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
2136 return Error(ID.Loc, "invalid indices for insertvalue");
2137 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
2138 ID.Kind = ValID::t_Constant;
2141 case lltok::kw_icmp:
2142 case lltok::kw_fcmp: {
2143 unsigned PredVal, Opc = Lex.getUIntVal();
2144 Constant *Val0, *Val1;
2146 if (ParseCmpPredicate(PredVal, Opc) ||
2147 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2148 ParseGlobalTypeAndValue(Val0) ||
2149 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2150 ParseGlobalTypeAndValue(Val1) ||
2151 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2154 if (Val0->getType() != Val1->getType())
2155 return Error(ID.Loc, "compare operands must have the same type");
2157 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2159 if (Opc == Instruction::FCmp) {
2160 if (!Val0->getType()->isFPOrFPVectorTy())
2161 return Error(ID.Loc, "fcmp requires floating point operands");
2162 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2164 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2165 if (!Val0->getType()->isIntOrIntVectorTy() &&
2166 !Val0->getType()->getScalarType()->isPointerTy())
2167 return Error(ID.Loc, "icmp requires pointer or integer operands");
2168 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2170 ID.Kind = ValID::t_Constant;
2174 // Binary Operators.
2176 case lltok::kw_fadd:
2178 case lltok::kw_fsub:
2180 case lltok::kw_fmul:
2181 case lltok::kw_udiv:
2182 case lltok::kw_sdiv:
2183 case lltok::kw_fdiv:
2184 case lltok::kw_urem:
2185 case lltok::kw_srem:
2186 case lltok::kw_frem:
2188 case lltok::kw_lshr:
2189 case lltok::kw_ashr: {
2193 unsigned Opc = Lex.getUIntVal();
2194 Constant *Val0, *Val1;
2196 LocTy ModifierLoc = Lex.getLoc();
2197 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
2198 Opc == Instruction::Mul || Opc == Instruction::Shl) {
2199 if (EatIfPresent(lltok::kw_nuw))
2201 if (EatIfPresent(lltok::kw_nsw)) {
2203 if (EatIfPresent(lltok::kw_nuw))
2206 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
2207 Opc == Instruction::LShr || Opc == Instruction::AShr) {
2208 if (EatIfPresent(lltok::kw_exact))
2211 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2212 ParseGlobalTypeAndValue(Val0) ||
2213 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2214 ParseGlobalTypeAndValue(Val1) ||
2215 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2217 if (Val0->getType() != Val1->getType())
2218 return Error(ID.Loc, "operands of constexpr must have same type");
2219 if (!Val0->getType()->isIntOrIntVectorTy()) {
2221 return Error(ModifierLoc, "nuw only applies to integer operations");
2223 return Error(ModifierLoc, "nsw only applies to integer operations");
2225 // Check that the type is valid for the operator.
2227 case Instruction::Add:
2228 case Instruction::Sub:
2229 case Instruction::Mul:
2230 case Instruction::UDiv:
2231 case Instruction::SDiv:
2232 case Instruction::URem:
2233 case Instruction::SRem:
2234 case Instruction::Shl:
2235 case Instruction::AShr:
2236 case Instruction::LShr:
2237 if (!Val0->getType()->isIntOrIntVectorTy())
2238 return Error(ID.Loc, "constexpr requires integer operands");
2240 case Instruction::FAdd:
2241 case Instruction::FSub:
2242 case Instruction::FMul:
2243 case Instruction::FDiv:
2244 case Instruction::FRem:
2245 if (!Val0->getType()->isFPOrFPVectorTy())
2246 return Error(ID.Loc, "constexpr requires fp operands");
2248 default: llvm_unreachable("Unknown binary operator!");
2251 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2252 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2253 if (Exact) Flags |= PossiblyExactOperator::IsExact;
2254 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2256 ID.Kind = ValID::t_Constant;
2260 // Logical Operations
2263 case lltok::kw_xor: {
2264 unsigned Opc = Lex.getUIntVal();
2265 Constant *Val0, *Val1;
2267 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2268 ParseGlobalTypeAndValue(Val0) ||
2269 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2270 ParseGlobalTypeAndValue(Val1) ||
2271 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2273 if (Val0->getType() != Val1->getType())
2274 return Error(ID.Loc, "operands of constexpr must have same type");
2275 if (!Val0->getType()->isIntOrIntVectorTy())
2276 return Error(ID.Loc,
2277 "constexpr requires integer or integer vector operands");
2278 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2279 ID.Kind = ValID::t_Constant;
2283 case lltok::kw_getelementptr:
2284 case lltok::kw_shufflevector:
2285 case lltok::kw_insertelement:
2286 case lltok::kw_extractelement:
2287 case lltok::kw_select: {
2288 unsigned Opc = Lex.getUIntVal();
2289 SmallVector<Constant*, 16> Elts;
2290 bool InBounds = false;
2292 if (Opc == Instruction::GetElementPtr)
2293 InBounds = EatIfPresent(lltok::kw_inbounds);
2294 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2295 ParseGlobalValueVector(Elts) ||
2296 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2299 if (Opc == Instruction::GetElementPtr) {
2300 if (Elts.size() == 0 ||
2301 !Elts[0]->getType()->getScalarType()->isPointerTy())
2302 return Error(ID.Loc, "getelementptr requires pointer operand");
2304 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
2305 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(), Indices))
2306 return Error(ID.Loc, "invalid indices for getelementptr");
2307 ID.ConstantVal = ConstantExpr::getGetElementPtr(Elts[0], Indices,
2309 } else if (Opc == Instruction::Select) {
2310 if (Elts.size() != 3)
2311 return Error(ID.Loc, "expected three operands to select");
2312 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2314 return Error(ID.Loc, Reason);
2315 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2316 } else if (Opc == Instruction::ShuffleVector) {
2317 if (Elts.size() != 3)
2318 return Error(ID.Loc, "expected three operands to shufflevector");
2319 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2320 return Error(ID.Loc, "invalid operands to shufflevector");
2322 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2323 } else if (Opc == Instruction::ExtractElement) {
2324 if (Elts.size() != 2)
2325 return Error(ID.Loc, "expected two operands to extractelement");
2326 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2327 return Error(ID.Loc, "invalid extractelement operands");
2328 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2330 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2331 if (Elts.size() != 3)
2332 return Error(ID.Loc, "expected three operands to insertelement");
2333 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2334 return Error(ID.Loc, "invalid insertelement operands");
2336 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2339 ID.Kind = ValID::t_Constant;
2348 /// ParseGlobalValue - Parse a global value with the specified type.
2349 bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
2353 bool Parsed = ParseValID(ID) ||
2354 ConvertValIDToValue(Ty, ID, V, NULL);
2355 if (V && !(C = dyn_cast<Constant>(V)))
2356 return Error(ID.Loc, "global values must be constants");
2360 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2362 return ParseType(Ty) ||
2363 ParseGlobalValue(Ty, V);
2366 /// ParseGlobalValueVector
2368 /// ::= TypeAndValue (',' TypeAndValue)*
2369 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts) {
2371 if (Lex.getKind() == lltok::rbrace ||
2372 Lex.getKind() == lltok::rsquare ||
2373 Lex.getKind() == lltok::greater ||
2374 Lex.getKind() == lltok::rparen)
2378 if (ParseGlobalTypeAndValue(C)) return true;
2381 while (EatIfPresent(lltok::comma)) {
2382 if (ParseGlobalTypeAndValue(C)) return true;
2389 bool LLParser::ParseMetadataListValue(ValID &ID, PerFunctionState *PFS) {
2390 assert(Lex.getKind() == lltok::lbrace);
2393 SmallVector<Value*, 16> Elts;
2394 if (ParseMDNodeVector(Elts, PFS) ||
2395 ParseToken(lltok::rbrace, "expected end of metadata node"))
2398 ID.MDNodeVal = MDNode::get(Context, Elts);
2399 ID.Kind = ValID::t_MDNode;
2403 /// ParseMetadataValue
2407 bool LLParser::ParseMetadataValue(ValID &ID, PerFunctionState *PFS) {
2408 assert(Lex.getKind() == lltok::exclaim);
2413 if (Lex.getKind() == lltok::lbrace)
2414 return ParseMetadataListValue(ID, PFS);
2416 // Standalone metadata reference
2418 if (Lex.getKind() == lltok::APSInt) {
2419 if (ParseMDNodeID(ID.MDNodeVal)) return true;
2420 ID.Kind = ValID::t_MDNode;
2425 // ::= '!' STRINGCONSTANT
2426 if (ParseMDString(ID.MDStringVal)) return true;
2427 ID.Kind = ValID::t_MDString;
2432 //===----------------------------------------------------------------------===//
2433 // Function Parsing.
2434 //===----------------------------------------------------------------------===//
2436 bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
2437 PerFunctionState *PFS) {
2438 if (Ty->isFunctionTy())
2439 return Error(ID.Loc, "functions are not values, refer to them as pointers");
2442 case ValID::t_LocalID:
2443 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2444 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
2446 case ValID::t_LocalName:
2447 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2448 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
2450 case ValID::t_InlineAsm: {
2451 PointerType *PTy = dyn_cast<PointerType>(Ty);
2453 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
2454 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
2455 return Error(ID.Loc, "invalid type for inline asm constraint string");
2456 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1, ID.UIntVal>>1);
2459 case ValID::t_MDNode:
2460 if (!Ty->isMetadataTy())
2461 return Error(ID.Loc, "metadata value must have metadata type");
2464 case ValID::t_MDString:
2465 if (!Ty->isMetadataTy())
2466 return Error(ID.Loc, "metadata value must have metadata type");
2469 case ValID::t_GlobalName:
2470 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
2472 case ValID::t_GlobalID:
2473 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
2475 case ValID::t_APSInt:
2476 if (!Ty->isIntegerTy())
2477 return Error(ID.Loc, "integer constant must have integer type");
2478 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
2479 V = ConstantInt::get(Context, ID.APSIntVal);
2481 case ValID::t_APFloat:
2482 if (!Ty->isFloatingPointTy() ||
2483 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
2484 return Error(ID.Loc, "floating point constant invalid for type");
2486 // The lexer has no type info, so builds all half, float, and double FP
2487 // constants as double. Fix this here. Long double does not need this.
2488 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble) {
2491 ID.APFloatVal.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven,
2493 else if (Ty->isFloatTy())
2494 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
2497 V = ConstantFP::get(Context, ID.APFloatVal);
2499 if (V->getType() != Ty)
2500 return Error(ID.Loc, "floating point constant does not have type '" +
2501 getTypeString(Ty) + "'");
2505 if (!Ty->isPointerTy())
2506 return Error(ID.Loc, "null must be a pointer type");
2507 V = ConstantPointerNull::get(cast<PointerType>(Ty));
2509 case ValID::t_Undef:
2510 // FIXME: LabelTy should not be a first-class type.
2511 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2512 return Error(ID.Loc, "invalid type for undef constant");
2513 V = UndefValue::get(Ty);
2515 case ValID::t_EmptyArray:
2516 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
2517 return Error(ID.Loc, "invalid empty array initializer");
2518 V = UndefValue::get(Ty);
2521 // FIXME: LabelTy should not be a first-class type.
2522 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2523 return Error(ID.Loc, "invalid type for null constant");
2524 V = Constant::getNullValue(Ty);
2526 case ValID::t_Constant:
2527 if (ID.ConstantVal->getType() != Ty)
2528 return Error(ID.Loc, "constant expression type mismatch");
2532 case ValID::t_ConstantStruct:
2533 case ValID::t_PackedConstantStruct:
2534 if (StructType *ST = dyn_cast<StructType>(Ty)) {
2535 if (ST->getNumElements() != ID.UIntVal)
2536 return Error(ID.Loc,
2537 "initializer with struct type has wrong # elements");
2538 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
2539 return Error(ID.Loc, "packed'ness of initializer and type don't match");
2541 // Verify that the elements are compatible with the structtype.
2542 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
2543 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
2544 return Error(ID.Loc, "element " + Twine(i) +
2545 " of struct initializer doesn't match struct element type");
2547 V = ConstantStruct::get(ST, makeArrayRef(ID.ConstantStructElts,
2550 return Error(ID.Loc, "constant expression type mismatch");
2553 llvm_unreachable("Invalid ValID");
2556 bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS) {
2559 return ParseValID(ID, PFS) ||
2560 ConvertValIDToValue(Ty, ID, V, PFS);
2563 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
2565 return ParseType(Ty) ||
2566 ParseValue(Ty, V, PFS);
2569 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
2570 PerFunctionState &PFS) {
2573 if (ParseTypeAndValue(V, PFS)) return true;
2574 if (!isa<BasicBlock>(V))
2575 return Error(Loc, "expected a basic block");
2576 BB = cast<BasicBlock>(V);
2582 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
2583 /// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
2584 /// OptionalAlign OptGC
2585 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
2586 // Parse the linkage.
2587 LocTy LinkageLoc = Lex.getLoc();
2590 unsigned Visibility;
2591 Attributes RetAttrs;
2594 LocTy RetTypeLoc = Lex.getLoc();
2595 if (ParseOptionalLinkage(Linkage) ||
2596 ParseOptionalVisibility(Visibility) ||
2597 ParseOptionalCallingConv(CC) ||
2598 ParseOptionalAttrs(RetAttrs, 1) ||
2599 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
2602 // Verify that the linkage is ok.
2603 switch ((GlobalValue::LinkageTypes)Linkage) {
2604 case GlobalValue::ExternalLinkage:
2605 break; // always ok.
2606 case GlobalValue::DLLImportLinkage:
2607 case GlobalValue::ExternalWeakLinkage:
2609 return Error(LinkageLoc, "invalid linkage for function definition");
2611 case GlobalValue::PrivateLinkage:
2612 case GlobalValue::LinkerPrivateLinkage:
2613 case GlobalValue::LinkerPrivateWeakLinkage:
2614 case GlobalValue::LinkerPrivateWeakDefAutoLinkage:
2615 case GlobalValue::InternalLinkage:
2616 case GlobalValue::AvailableExternallyLinkage:
2617 case GlobalValue::LinkOnceAnyLinkage:
2618 case GlobalValue::LinkOnceODRLinkage:
2619 case GlobalValue::WeakAnyLinkage:
2620 case GlobalValue::WeakODRLinkage:
2621 case GlobalValue::DLLExportLinkage:
2623 return Error(LinkageLoc, "invalid linkage for function declaration");
2625 case GlobalValue::AppendingLinkage:
2626 case GlobalValue::CommonLinkage:
2627 return Error(LinkageLoc, "invalid function linkage type");
2630 if (!FunctionType::isValidReturnType(RetType))
2631 return Error(RetTypeLoc, "invalid function return type");
2633 LocTy NameLoc = Lex.getLoc();
2635 std::string FunctionName;
2636 if (Lex.getKind() == lltok::GlobalVar) {
2637 FunctionName = Lex.getStrVal();
2638 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
2639 unsigned NameID = Lex.getUIntVal();
2641 if (NameID != NumberedVals.size())
2642 return TokError("function expected to be numbered '%" +
2643 Twine(NumberedVals.size()) + "'");
2645 return TokError("expected function name");
2650 if (Lex.getKind() != lltok::lparen)
2651 return TokError("expected '(' in function argument list");
2653 SmallVector<ArgInfo, 8> ArgList;
2655 Attributes FuncAttrs;
2656 std::string Section;
2660 LocTy UnnamedAddrLoc;
2662 if (ParseArgumentList(ArgList, isVarArg) ||
2663 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
2665 ParseOptionalAttrs(FuncAttrs, 2) ||
2666 (EatIfPresent(lltok::kw_section) &&
2667 ParseStringConstant(Section)) ||
2668 ParseOptionalAlignment(Alignment) ||
2669 (EatIfPresent(lltok::kw_gc) &&
2670 ParseStringConstant(GC)))
2673 // If the alignment was parsed as an attribute, move to the alignment field.
2674 if (FuncAttrs & Attribute::Alignment) {
2675 Alignment = Attribute::getAlignmentFromAttrs(FuncAttrs);
2676 FuncAttrs &= ~Attribute::Alignment;
2679 // Okay, if we got here, the function is syntactically valid. Convert types
2680 // and do semantic checks.
2681 std::vector<Type*> ParamTypeList;
2682 SmallVector<AttributeWithIndex, 8> Attrs;
2684 if (RetAttrs != Attribute::None)
2685 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
2687 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2688 ParamTypeList.push_back(ArgList[i].Ty);
2689 if (ArgList[i].Attrs != Attribute::None)
2690 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
2693 if (FuncAttrs != Attribute::None)
2694 Attrs.push_back(AttributeWithIndex::get(~0, FuncAttrs));
2696 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
2698 if (PAL.paramHasAttr(1, Attribute::StructRet) && !RetType->isVoidTy())
2699 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
2702 FunctionType::get(RetType, ParamTypeList, isVarArg);
2703 PointerType *PFT = PointerType::getUnqual(FT);
2706 if (!FunctionName.empty()) {
2707 // If this was a definition of a forward reference, remove the definition
2708 // from the forward reference table and fill in the forward ref.
2709 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
2710 ForwardRefVals.find(FunctionName);
2711 if (FRVI != ForwardRefVals.end()) {
2712 Fn = M->getFunction(FunctionName);
2713 if (Fn->getType() != PFT)
2714 return Error(FRVI->second.second, "invalid forward reference to "
2715 "function '" + FunctionName + "' with wrong type!");
2717 ForwardRefVals.erase(FRVI);
2718 } else if ((Fn = M->getFunction(FunctionName))) {
2719 // Reject redefinitions.
2720 return Error(NameLoc, "invalid redefinition of function '" +
2721 FunctionName + "'");
2722 } else if (M->getNamedValue(FunctionName)) {
2723 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
2727 // If this is a definition of a forward referenced function, make sure the
2729 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
2730 = ForwardRefValIDs.find(NumberedVals.size());
2731 if (I != ForwardRefValIDs.end()) {
2732 Fn = cast<Function>(I->second.first);
2733 if (Fn->getType() != PFT)
2734 return Error(NameLoc, "type of definition and forward reference of '@" +
2735 Twine(NumberedVals.size()) + "' disagree");
2736 ForwardRefValIDs.erase(I);
2741 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
2742 else // Move the forward-reference to the correct spot in the module.
2743 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
2745 if (FunctionName.empty())
2746 NumberedVals.push_back(Fn);
2748 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
2749 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
2750 Fn->setCallingConv(CC);
2751 Fn->setAttributes(PAL);
2752 Fn->setUnnamedAddr(UnnamedAddr);
2753 Fn->setAlignment(Alignment);
2754 Fn->setSection(Section);
2755 if (!GC.empty()) Fn->setGC(GC.c_str());
2757 // Add all of the arguments we parsed to the function.
2758 Function::arg_iterator ArgIt = Fn->arg_begin();
2759 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
2760 // If the argument has a name, insert it into the argument symbol table.
2761 if (ArgList[i].Name.empty()) continue;
2763 // Set the name, if it conflicted, it will be auto-renamed.
2764 ArgIt->setName(ArgList[i].Name);
2766 if (ArgIt->getName() != ArgList[i].Name)
2767 return Error(ArgList[i].Loc, "redefinition of argument '%" +
2768 ArgList[i].Name + "'");
2775 /// ParseFunctionBody
2776 /// ::= '{' BasicBlock+ '}'
2778 bool LLParser::ParseFunctionBody(Function &Fn) {
2779 if (Lex.getKind() != lltok::lbrace)
2780 return TokError("expected '{' in function body");
2781 Lex.Lex(); // eat the {.
2783 int FunctionNumber = -1;
2784 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
2786 PerFunctionState PFS(*this, Fn, FunctionNumber);
2788 // We need at least one basic block.
2789 if (Lex.getKind() == lltok::rbrace)
2790 return TokError("function body requires at least one basic block");
2792 while (Lex.getKind() != lltok::rbrace)
2793 if (ParseBasicBlock(PFS)) return true;
2798 // Verify function is ok.
2799 return PFS.FinishFunction();
2803 /// ::= LabelStr? Instruction*
2804 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
2805 // If this basic block starts out with a name, remember it.
2807 LocTy NameLoc = Lex.getLoc();
2808 if (Lex.getKind() == lltok::LabelStr) {
2809 Name = Lex.getStrVal();
2813 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
2814 if (BB == 0) return true;
2816 std::string NameStr;
2818 // Parse the instructions in this block until we get a terminator.
2820 SmallVector<std::pair<unsigned, MDNode *>, 4> MetadataOnInst;
2822 // This instruction may have three possibilities for a name: a) none
2823 // specified, b) name specified "%foo =", c) number specified: "%4 =".
2824 LocTy NameLoc = Lex.getLoc();
2828 if (Lex.getKind() == lltok::LocalVarID) {
2829 NameID = Lex.getUIntVal();
2831 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
2833 } else if (Lex.getKind() == lltok::LocalVar) {
2834 NameStr = Lex.getStrVal();
2836 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
2840 switch (ParseInstruction(Inst, BB, PFS)) {
2841 default: assert(0 && "Unknown ParseInstruction result!");
2842 case InstError: return true;
2844 BB->getInstList().push_back(Inst);
2846 // With a normal result, we check to see if the instruction is followed by
2847 // a comma and metadata.
2848 if (EatIfPresent(lltok::comma))
2849 if (ParseInstructionMetadata(Inst, &PFS))
2852 case InstExtraComma:
2853 BB->getInstList().push_back(Inst);
2855 // If the instruction parser ate an extra comma at the end of it, it
2856 // *must* be followed by metadata.
2857 if (ParseInstructionMetadata(Inst, &PFS))
2862 // Set the name on the instruction.
2863 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
2864 } while (!isa<TerminatorInst>(Inst));
2869 //===----------------------------------------------------------------------===//
2870 // Instruction Parsing.
2871 //===----------------------------------------------------------------------===//
2873 /// ParseInstruction - Parse one of the many different instructions.
2875 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
2876 PerFunctionState &PFS) {
2877 lltok::Kind Token = Lex.getKind();
2878 if (Token == lltok::Eof)
2879 return TokError("found end of file when expecting more instructions");
2880 LocTy Loc = Lex.getLoc();
2881 unsigned KeywordVal = Lex.getUIntVal();
2882 Lex.Lex(); // Eat the keyword.
2885 default: return Error(Loc, "expected instruction opcode");
2886 // Terminator Instructions.
2887 case lltok::kw_unwind: Inst = new UnwindInst(Context); return false;
2888 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
2889 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
2890 case lltok::kw_br: return ParseBr(Inst, PFS);
2891 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
2892 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
2893 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
2894 case lltok::kw_resume: return ParseResume(Inst, PFS);
2895 // Binary Operators.
2899 case lltok::kw_shl: {
2900 bool NUW = EatIfPresent(lltok::kw_nuw);
2901 bool NSW = EatIfPresent(lltok::kw_nsw);
2902 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
2904 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
2906 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
2907 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
2910 case lltok::kw_fadd:
2911 case lltok::kw_fsub:
2912 case lltok::kw_fmul: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
2914 case lltok::kw_sdiv:
2915 case lltok::kw_udiv:
2916 case lltok::kw_lshr:
2917 case lltok::kw_ashr: {
2918 bool Exact = EatIfPresent(lltok::kw_exact);
2920 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
2921 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
2925 case lltok::kw_urem:
2926 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
2927 case lltok::kw_fdiv:
2928 case lltok::kw_frem: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
2931 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
2932 case lltok::kw_icmp:
2933 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
2935 case lltok::kw_trunc:
2936 case lltok::kw_zext:
2937 case lltok::kw_sext:
2938 case lltok::kw_fptrunc:
2939 case lltok::kw_fpext:
2940 case lltok::kw_bitcast:
2941 case lltok::kw_uitofp:
2942 case lltok::kw_sitofp:
2943 case lltok::kw_fptoui:
2944 case lltok::kw_fptosi:
2945 case lltok::kw_inttoptr:
2946 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
2948 case lltok::kw_select: return ParseSelect(Inst, PFS);
2949 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
2950 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
2951 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
2952 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
2953 case lltok::kw_phi: return ParsePHI(Inst, PFS);
2954 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
2955 case lltok::kw_call: return ParseCall(Inst, PFS, false);
2956 case lltok::kw_tail: return ParseCall(Inst, PFS, true);
2958 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
2959 case lltok::kw_load: return ParseLoad(Inst, PFS);
2960 case lltok::kw_store: return ParseStore(Inst, PFS);
2961 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
2962 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
2963 case lltok::kw_fence: return ParseFence(Inst, PFS);
2964 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
2965 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
2966 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
2970 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
2971 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
2972 if (Opc == Instruction::FCmp) {
2973 switch (Lex.getKind()) {
2974 default: TokError("expected fcmp predicate (e.g. 'oeq')");
2975 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
2976 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
2977 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
2978 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
2979 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
2980 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
2981 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
2982 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
2983 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
2984 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
2985 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
2986 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
2987 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
2988 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
2989 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
2990 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
2993 switch (Lex.getKind()) {
2994 default: TokError("expected icmp predicate (e.g. 'eq')");
2995 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
2996 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
2997 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
2998 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
2999 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
3000 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
3001 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
3002 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
3003 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
3004 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3011 //===----------------------------------------------------------------------===//
3012 // Terminator Instructions.
3013 //===----------------------------------------------------------------------===//
3015 /// ParseRet - Parse a return instruction.
3016 /// ::= 'ret' void (',' !dbg, !1)*
3017 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
3018 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3019 PerFunctionState &PFS) {
3020 SMLoc TypeLoc = Lex.getLoc();
3022 if (ParseType(Ty, true /*void allowed*/)) return true;
3024 Type *ResType = PFS.getFunction().getReturnType();
3026 if (Ty->isVoidTy()) {
3027 if (!ResType->isVoidTy())
3028 return Error(TypeLoc, "value doesn't match function result type '" +
3029 getTypeString(ResType) + "'");
3031 Inst = ReturnInst::Create(Context);
3036 if (ParseValue(Ty, RV, PFS)) return true;
3038 if (ResType != RV->getType())
3039 return Error(TypeLoc, "value doesn't match function result type '" +
3040 getTypeString(ResType) + "'");
3042 Inst = ReturnInst::Create(Context, RV);
3048 /// ::= 'br' TypeAndValue
3049 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3050 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
3053 BasicBlock *Op1, *Op2;
3054 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
3056 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
3057 Inst = BranchInst::Create(BB);
3061 if (Op0->getType() != Type::getInt1Ty(Context))
3062 return Error(Loc, "branch condition must have 'i1' type");
3064 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
3065 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
3066 ParseToken(lltok::comma, "expected ',' after true destination") ||
3067 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
3070 Inst = BranchInst::Create(Op1, Op2, Op0);
3076 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
3078 /// ::= (TypeAndValue ',' TypeAndValue)*
3079 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
3080 LocTy CondLoc, BBLoc;
3082 BasicBlock *DefaultBB;
3083 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
3084 ParseToken(lltok::comma, "expected ',' after switch condition") ||
3085 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
3086 ParseToken(lltok::lsquare, "expected '[' with switch table"))
3089 if (!Cond->getType()->isIntegerTy())
3090 return Error(CondLoc, "switch condition must have integer type");
3092 // Parse the jump table pairs.
3093 SmallPtrSet<Value*, 32> SeenCases;
3094 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
3095 while (Lex.getKind() != lltok::rsquare) {
3099 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
3100 ParseToken(lltok::comma, "expected ',' after case value") ||
3101 ParseTypeAndBasicBlock(DestBB, PFS))
3104 if (!SeenCases.insert(Constant))
3105 return Error(CondLoc, "duplicate case value in switch");
3106 if (!isa<ConstantInt>(Constant))
3107 return Error(CondLoc, "case value is not a constant integer");
3109 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
3112 Lex.Lex(); // Eat the ']'.
3114 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
3115 for (unsigned i = 0, e = Table.size(); i != e; ++i)
3116 SI->addCase(Table[i].first, Table[i].second);
3123 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
3124 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
3127 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
3128 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
3129 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
3132 if (!Address->getType()->isPointerTy())
3133 return Error(AddrLoc, "indirectbr address must have pointer type");
3135 // Parse the destination list.
3136 SmallVector<BasicBlock*, 16> DestList;
3138 if (Lex.getKind() != lltok::rsquare) {
3140 if (ParseTypeAndBasicBlock(DestBB, PFS))
3142 DestList.push_back(DestBB);
3144 while (EatIfPresent(lltok::comma)) {
3145 if (ParseTypeAndBasicBlock(DestBB, PFS))
3147 DestList.push_back(DestBB);
3151 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
3154 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
3155 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
3156 IBI->addDestination(DestList[i]);
3163 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3164 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3165 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3166 LocTy CallLoc = Lex.getLoc();
3167 Attributes RetAttrs, FnAttrs;
3172 SmallVector<ParamInfo, 16> ArgList;
3174 BasicBlock *NormalBB, *UnwindBB;
3175 if (ParseOptionalCallingConv(CC) ||
3176 ParseOptionalAttrs(RetAttrs, 1) ||
3177 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3178 ParseValID(CalleeID) ||
3179 ParseParameterList(ArgList, PFS) ||
3180 ParseOptionalAttrs(FnAttrs, 2) ||
3181 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3182 ParseTypeAndBasicBlock(NormalBB, PFS) ||
3183 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3184 ParseTypeAndBasicBlock(UnwindBB, PFS))
3187 // If RetType is a non-function pointer type, then this is the short syntax
3188 // for the call, which means that RetType is just the return type. Infer the
3189 // rest of the function argument types from the arguments that are present.
3190 PointerType *PFTy = 0;
3191 FunctionType *Ty = 0;
3192 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3193 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3194 // Pull out the types of all of the arguments...
3195 std::vector<Type*> ParamTypes;
3196 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3197 ParamTypes.push_back(ArgList[i].V->getType());
3199 if (!FunctionType::isValidReturnType(RetType))
3200 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3202 Ty = FunctionType::get(RetType, ParamTypes, false);
3203 PFTy = PointerType::getUnqual(Ty);
3206 // Look up the callee.
3208 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3210 // Set up the Attributes for the function.
3211 SmallVector<AttributeWithIndex, 8> Attrs;
3212 if (RetAttrs != Attribute::None)
3213 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3215 SmallVector<Value*, 8> Args;
3217 // Loop through FunctionType's arguments and ensure they are specified
3218 // correctly. Also, gather any parameter attributes.
3219 FunctionType::param_iterator I = Ty->param_begin();
3220 FunctionType::param_iterator E = Ty->param_end();
3221 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3222 Type *ExpectedTy = 0;
3225 } else if (!Ty->isVarArg()) {
3226 return Error(ArgList[i].Loc, "too many arguments specified");
3229 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3230 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3231 getTypeString(ExpectedTy) + "'");
3232 Args.push_back(ArgList[i].V);
3233 if (ArgList[i].Attrs != Attribute::None)
3234 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3238 return Error(CallLoc, "not enough parameters specified for call");
3240 if (FnAttrs != Attribute::None)
3241 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3243 // Finish off the Attributes and check them
3244 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3246 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB, Args);
3247 II->setCallingConv(CC);
3248 II->setAttributes(PAL);
3254 /// ::= 'resume' TypeAndValue
3255 bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
3256 Value *Exn; LocTy ExnLoc;
3257 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
3260 ResumeInst *RI = ResumeInst::Create(Exn);
3265 //===----------------------------------------------------------------------===//
3266 // Binary Operators.
3267 //===----------------------------------------------------------------------===//
3270 /// ::= ArithmeticOps TypeAndValue ',' Value
3272 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3273 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3274 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3275 unsigned Opc, unsigned OperandType) {
3276 LocTy Loc; Value *LHS, *RHS;
3277 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3278 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3279 ParseValue(LHS->getType(), RHS, PFS))
3283 switch (OperandType) {
3284 default: llvm_unreachable("Unknown operand type!");
3285 case 0: // int or FP.
3286 Valid = LHS->getType()->isIntOrIntVectorTy() ||
3287 LHS->getType()->isFPOrFPVectorTy();
3289 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
3290 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
3294 return Error(Loc, "invalid operand type for instruction");
3296 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3301 /// ::= ArithmeticOps TypeAndValue ',' Value {
3302 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3304 LocTy Loc; Value *LHS, *RHS;
3305 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3306 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3307 ParseValue(LHS->getType(), RHS, PFS))
3310 if (!LHS->getType()->isIntOrIntVectorTy())
3311 return Error(Loc,"instruction requires integer or integer vector operands");
3313 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3319 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3320 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3321 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3323 // Parse the integer/fp comparison predicate.
3327 if (ParseCmpPredicate(Pred, Opc) ||
3328 ParseTypeAndValue(LHS, Loc, PFS) ||
3329 ParseToken(lltok::comma, "expected ',' after compare value") ||
3330 ParseValue(LHS->getType(), RHS, PFS))
3333 if (Opc == Instruction::FCmp) {
3334 if (!LHS->getType()->isFPOrFPVectorTy())
3335 return Error(Loc, "fcmp requires floating point operands");
3336 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3338 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
3339 if (!LHS->getType()->isIntOrIntVectorTy() &&
3340 !LHS->getType()->getScalarType()->isPointerTy())
3341 return Error(Loc, "icmp requires integer operands");
3342 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3347 //===----------------------------------------------------------------------===//
3348 // Other Instructions.
3349 //===----------------------------------------------------------------------===//
3353 /// ::= CastOpc TypeAndValue 'to' Type
3354 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
3359 if (ParseTypeAndValue(Op, Loc, PFS) ||
3360 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
3364 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
3365 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
3366 return Error(Loc, "invalid cast opcode for cast from '" +
3367 getTypeString(Op->getType()) + "' to '" +
3368 getTypeString(DestTy) + "'");
3370 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
3375 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3376 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
3378 Value *Op0, *Op1, *Op2;
3379 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3380 ParseToken(lltok::comma, "expected ',' after select condition") ||
3381 ParseTypeAndValue(Op1, PFS) ||
3382 ParseToken(lltok::comma, "expected ',' after select value") ||
3383 ParseTypeAndValue(Op2, PFS))
3386 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
3387 return Error(Loc, Reason);
3389 Inst = SelectInst::Create(Op0, Op1, Op2);
3394 /// ::= 'va_arg' TypeAndValue ',' Type
3395 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
3399 if (ParseTypeAndValue(Op, PFS) ||
3400 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
3401 ParseType(EltTy, TypeLoc))
3404 if (!EltTy->isFirstClassType())
3405 return Error(TypeLoc, "va_arg requires operand with first class type");
3407 Inst = new VAArgInst(Op, EltTy);
3411 /// ParseExtractElement
3412 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
3413 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
3416 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3417 ParseToken(lltok::comma, "expected ',' after extract value") ||
3418 ParseTypeAndValue(Op1, PFS))
3421 if (!ExtractElementInst::isValidOperands(Op0, Op1))
3422 return Error(Loc, "invalid extractelement operands");
3424 Inst = ExtractElementInst::Create(Op0, Op1);
3428 /// ParseInsertElement
3429 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3430 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
3432 Value *Op0, *Op1, *Op2;
3433 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3434 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3435 ParseTypeAndValue(Op1, PFS) ||
3436 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3437 ParseTypeAndValue(Op2, PFS))
3440 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
3441 return Error(Loc, "invalid insertelement operands");
3443 Inst = InsertElementInst::Create(Op0, Op1, Op2);
3447 /// ParseShuffleVector
3448 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3449 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
3451 Value *Op0, *Op1, *Op2;
3452 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3453 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
3454 ParseTypeAndValue(Op1, PFS) ||
3455 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
3456 ParseTypeAndValue(Op2, PFS))
3459 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
3460 return Error(Loc, "invalid extractelement operands");
3462 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
3467 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
3468 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
3469 Type *Ty = 0; LocTy TypeLoc;
3472 if (ParseType(Ty, TypeLoc) ||
3473 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3474 ParseValue(Ty, Op0, PFS) ||
3475 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3476 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3477 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3480 bool AteExtraComma = false;
3481 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
3483 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
3485 if (!EatIfPresent(lltok::comma))
3488 if (Lex.getKind() == lltok::MetadataVar) {
3489 AteExtraComma = true;
3493 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3494 ParseValue(Ty, Op0, PFS) ||
3495 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3496 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3497 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3501 if (!Ty->isFirstClassType())
3502 return Error(TypeLoc, "phi node must have first class type");
3504 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
3505 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
3506 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
3508 return AteExtraComma ? InstExtraComma : InstNormal;
3512 /// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
3514 /// ::= 'catch' TypeAndValue
3516 /// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
3517 bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
3518 Type *Ty = 0; LocTy TyLoc;
3519 Value *PersFn; LocTy PersFnLoc;
3521 if (ParseType(Ty, TyLoc) ||
3522 ParseToken(lltok::kw_personality, "expected 'personality'") ||
3523 ParseTypeAndValue(PersFn, PersFnLoc, PFS))
3526 LandingPadInst *LP = LandingPadInst::Create(Ty, PersFn, 0);
3527 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
3529 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
3530 LandingPadInst::ClauseType CT;
3531 if (EatIfPresent(lltok::kw_catch))
3532 CT = LandingPadInst::Catch;
3533 else if (EatIfPresent(lltok::kw_filter))
3534 CT = LandingPadInst::Filter;
3536 return TokError("expected 'catch' or 'filter' clause type");
3538 Value *V; LocTy VLoc;
3539 if (ParseTypeAndValue(V, VLoc, PFS)) {
3544 // A 'catch' type expects a non-array constant. A filter clause expects an
3546 if (CT == LandingPadInst::Catch) {
3547 if (isa<ArrayType>(V->getType()))
3548 Error(VLoc, "'catch' clause has an invalid type");
3550 if (!isa<ArrayType>(V->getType()))
3551 Error(VLoc, "'filter' clause has an invalid type");
3562 /// ::= 'tail'? 'call' OptionalCallingConv OptionalAttrs Type Value
3563 /// ParameterList OptionalAttrs
3564 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
3566 Attributes RetAttrs, FnAttrs;
3571 SmallVector<ParamInfo, 16> ArgList;
3572 LocTy CallLoc = Lex.getLoc();
3574 if ((isTail && ParseToken(lltok::kw_call, "expected 'tail call'")) ||
3575 ParseOptionalCallingConv(CC) ||
3576 ParseOptionalAttrs(RetAttrs, 1) ||
3577 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3578 ParseValID(CalleeID) ||
3579 ParseParameterList(ArgList, PFS) ||
3580 ParseOptionalAttrs(FnAttrs, 2))
3583 // If RetType is a non-function pointer type, then this is the short syntax
3584 // for the call, which means that RetType is just the return type. Infer the
3585 // rest of the function argument types from the arguments that are present.
3586 PointerType *PFTy = 0;
3587 FunctionType *Ty = 0;
3588 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3589 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3590 // Pull out the types of all of the arguments...
3591 std::vector<Type*> ParamTypes;
3592 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3593 ParamTypes.push_back(ArgList[i].V->getType());
3595 if (!FunctionType::isValidReturnType(RetType))
3596 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3598 Ty = FunctionType::get(RetType, ParamTypes, false);
3599 PFTy = PointerType::getUnqual(Ty);
3602 // Look up the callee.
3604 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3606 // Set up the Attributes for the function.
3607 SmallVector<AttributeWithIndex, 8> Attrs;
3608 if (RetAttrs != Attribute::None)
3609 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3611 SmallVector<Value*, 8> Args;
3613 // Loop through FunctionType's arguments and ensure they are specified
3614 // correctly. Also, gather any parameter attributes.
3615 FunctionType::param_iterator I = Ty->param_begin();
3616 FunctionType::param_iterator E = Ty->param_end();
3617 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3618 Type *ExpectedTy = 0;
3621 } else if (!Ty->isVarArg()) {
3622 return Error(ArgList[i].Loc, "too many arguments specified");
3625 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3626 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3627 getTypeString(ExpectedTy) + "'");
3628 Args.push_back(ArgList[i].V);
3629 if (ArgList[i].Attrs != Attribute::None)
3630 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3634 return Error(CallLoc, "not enough parameters specified for call");
3636 if (FnAttrs != Attribute::None)
3637 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3639 // Finish off the Attributes and check them
3640 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3642 CallInst *CI = CallInst::Create(Callee, Args);
3643 CI->setTailCall(isTail);
3644 CI->setCallingConv(CC);
3645 CI->setAttributes(PAL);
3650 //===----------------------------------------------------------------------===//
3651 // Memory Instructions.
3652 //===----------------------------------------------------------------------===//
3655 /// ::= 'alloca' Type (',' TypeAndValue)? (',' OptionalInfo)?
3656 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
3659 unsigned Alignment = 0;
3661 if (ParseType(Ty)) return true;
3663 bool AteExtraComma = false;
3664 if (EatIfPresent(lltok::comma)) {
3665 if (Lex.getKind() == lltok::kw_align) {
3666 if (ParseOptionalAlignment(Alignment)) return true;
3667 } else if (Lex.getKind() == lltok::MetadataVar) {
3668 AteExtraComma = true;
3670 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
3671 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3676 if (Size && !Size->getType()->isIntegerTy())
3677 return Error(SizeLoc, "element count must have integer type");
3679 Inst = new AllocaInst(Ty, Size, Alignment);
3680 return AteExtraComma ? InstExtraComma : InstNormal;
3684 /// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
3685 /// ::= 'load' 'atomic' 'volatile'? TypeAndValue
3686 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
3687 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
3688 Value *Val; LocTy Loc;
3689 unsigned Alignment = 0;
3690 bool AteExtraComma = false;
3691 bool isAtomic = false;
3692 AtomicOrdering Ordering = NotAtomic;
3693 SynchronizationScope Scope = CrossThread;
3695 if (Lex.getKind() == lltok::kw_atomic) {
3700 bool isVolatile = false;
3701 if (Lex.getKind() == lltok::kw_volatile) {
3706 if (ParseTypeAndValue(Val, Loc, PFS) ||
3707 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
3708 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3711 if (!Val->getType()->isPointerTy() ||
3712 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
3713 return Error(Loc, "load operand must be a pointer to a first class type");
3714 if (isAtomic && !Alignment)
3715 return Error(Loc, "atomic load must have explicit non-zero alignment");
3716 if (Ordering == Release || Ordering == AcquireRelease)
3717 return Error(Loc, "atomic load cannot use Release ordering");
3719 Inst = new LoadInst(Val, "", isVolatile, Alignment, Ordering, Scope);
3720 return AteExtraComma ? InstExtraComma : InstNormal;
3725 /// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
3726 /// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
3727 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
3728 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
3729 Value *Val, *Ptr; LocTy Loc, PtrLoc;
3730 unsigned Alignment = 0;
3731 bool AteExtraComma = false;
3732 bool isAtomic = false;
3733 AtomicOrdering Ordering = NotAtomic;
3734 SynchronizationScope Scope = CrossThread;
3736 if (Lex.getKind() == lltok::kw_atomic) {
3741 bool isVolatile = false;
3742 if (Lex.getKind() == lltok::kw_volatile) {
3747 if (ParseTypeAndValue(Val, Loc, PFS) ||
3748 ParseToken(lltok::comma, "expected ',' after store operand") ||
3749 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
3750 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
3751 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3754 if (!Ptr->getType()->isPointerTy())
3755 return Error(PtrLoc, "store operand must be a pointer");
3756 if (!Val->getType()->isFirstClassType())
3757 return Error(Loc, "store operand must be a first class value");
3758 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
3759 return Error(Loc, "stored value and pointer type do not match");
3760 if (isAtomic && !Alignment)
3761 return Error(Loc, "atomic store must have explicit non-zero alignment");
3762 if (Ordering == Acquire || Ordering == AcquireRelease)
3763 return Error(Loc, "atomic store cannot use Acquire ordering");
3765 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, Scope);
3766 return AteExtraComma ? InstExtraComma : InstNormal;
3770 /// ::= 'cmpxchg' 'volatile'? TypeAndValue ',' TypeAndValue ',' TypeAndValue
3771 /// 'singlethread'? AtomicOrdering
3772 int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
3773 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
3774 bool AteExtraComma = false;
3775 AtomicOrdering Ordering = NotAtomic;
3776 SynchronizationScope Scope = CrossThread;
3777 bool isVolatile = false;
3779 if (EatIfPresent(lltok::kw_volatile))
3782 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
3783 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
3784 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
3785 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
3786 ParseTypeAndValue(New, NewLoc, PFS) ||
3787 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
3790 if (Ordering == Unordered)
3791 return TokError("cmpxchg cannot be unordered");
3792 if (!Ptr->getType()->isPointerTy())
3793 return Error(PtrLoc, "cmpxchg operand must be a pointer");
3794 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
3795 return Error(CmpLoc, "compare value and pointer type do not match");
3796 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
3797 return Error(NewLoc, "new value and pointer type do not match");
3798 if (!New->getType()->isIntegerTy())
3799 return Error(NewLoc, "cmpxchg operand must be an integer");
3800 unsigned Size = New->getType()->getPrimitiveSizeInBits();
3801 if (Size < 8 || (Size & (Size - 1)))
3802 return Error(NewLoc, "cmpxchg operand must be power-of-two byte-sized"
3805 AtomicCmpXchgInst *CXI =
3806 new AtomicCmpXchgInst(Ptr, Cmp, New, Ordering, Scope);
3807 CXI->setVolatile(isVolatile);
3809 return AteExtraComma ? InstExtraComma : InstNormal;
3813 /// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
3814 /// 'singlethread'? AtomicOrdering
3815 int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
3816 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
3817 bool AteExtraComma = false;
3818 AtomicOrdering Ordering = NotAtomic;
3819 SynchronizationScope Scope = CrossThread;
3820 bool isVolatile = false;
3821 AtomicRMWInst::BinOp Operation;
3823 if (EatIfPresent(lltok::kw_volatile))
3826 switch (Lex.getKind()) {
3827 default: return TokError("expected binary operation in atomicrmw");
3828 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
3829 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
3830 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
3831 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
3832 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
3833 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
3834 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
3835 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
3836 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
3837 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
3838 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
3840 Lex.Lex(); // Eat the operation.
3842 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
3843 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
3844 ParseTypeAndValue(Val, ValLoc, PFS) ||
3845 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
3848 if (Ordering == Unordered)
3849 return TokError("atomicrmw cannot be unordered");
3850 if (!Ptr->getType()->isPointerTy())
3851 return Error(PtrLoc, "atomicrmw operand must be a pointer");
3852 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
3853 return Error(ValLoc, "atomicrmw value and pointer type do not match");
3854 if (!Val->getType()->isIntegerTy())
3855 return Error(ValLoc, "atomicrmw operand must be an integer");
3856 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
3857 if (Size < 8 || (Size & (Size - 1)))
3858 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
3861 AtomicRMWInst *RMWI =
3862 new AtomicRMWInst(Operation, Ptr, Val, Ordering, Scope);
3863 RMWI->setVolatile(isVolatile);
3865 return AteExtraComma ? InstExtraComma : InstNormal;
3869 /// ::= 'fence' 'singlethread'? AtomicOrdering
3870 int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
3871 AtomicOrdering Ordering = NotAtomic;
3872 SynchronizationScope Scope = CrossThread;
3873 if (ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
3876 if (Ordering == Unordered)
3877 return TokError("fence cannot be unordered");
3878 if (Ordering == Monotonic)
3879 return TokError("fence cannot be monotonic");
3881 Inst = new FenceInst(Context, Ordering, Scope);
3885 /// ParseGetElementPtr
3886 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
3887 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
3892 bool InBounds = EatIfPresent(lltok::kw_inbounds);
3894 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
3896 if (!Ptr->getType()->getScalarType()->isPointerTy())
3897 return Error(Loc, "base of getelementptr must be a pointer");
3899 SmallVector<Value*, 16> Indices;
3900 bool AteExtraComma = false;
3901 while (EatIfPresent(lltok::comma)) {
3902 if (Lex.getKind() == lltok::MetadataVar) {
3903 AteExtraComma = true;
3906 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
3907 if (!Val->getType()->getScalarType()->isIntegerTy())
3908 return Error(EltLoc, "getelementptr index must be an integer");
3909 if (Val->getType()->isVectorTy() != Ptr->getType()->isVectorTy())
3910 return Error(EltLoc, "getelementptr index type missmatch");
3911 if (Val->getType()->isVectorTy()) {
3912 unsigned ValNumEl = cast<VectorType>(Val->getType())->getNumElements();
3913 unsigned PtrNumEl = cast<VectorType>(Ptr->getType())->getNumElements();
3914 if (ValNumEl != PtrNumEl)
3915 return Error(EltLoc,
3916 "getelementptr vector index has a wrong number of elements");
3918 Indices.push_back(Val);
3921 if (Val && Val->getType()->isVectorTy() && Indices.size() != 1)
3922 return Error(EltLoc, "vector getelementptrs must have a single index");
3924 if (!GetElementPtrInst::getIndexedType(Ptr->getType(), Indices))
3925 return Error(Loc, "invalid getelementptr indices");
3926 Inst = GetElementPtrInst::Create(Ptr, Indices);
3928 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
3929 return AteExtraComma ? InstExtraComma : InstNormal;
3932 /// ParseExtractValue
3933 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
3934 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
3935 Value *Val; LocTy Loc;
3936 SmallVector<unsigned, 4> Indices;
3938 if (ParseTypeAndValue(Val, Loc, PFS) ||
3939 ParseIndexList(Indices, AteExtraComma))
3942 if (!Val->getType()->isAggregateType())
3943 return Error(Loc, "extractvalue operand must be aggregate type");
3945 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
3946 return Error(Loc, "invalid indices for extractvalue");
3947 Inst = ExtractValueInst::Create(Val, Indices);
3948 return AteExtraComma ? InstExtraComma : InstNormal;
3951 /// ParseInsertValue
3952 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
3953 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
3954 Value *Val0, *Val1; LocTy Loc0, Loc1;
3955 SmallVector<unsigned, 4> Indices;
3957 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
3958 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
3959 ParseTypeAndValue(Val1, Loc1, PFS) ||
3960 ParseIndexList(Indices, AteExtraComma))
3963 if (!Val0->getType()->isAggregateType())
3964 return Error(Loc0, "insertvalue operand must be aggregate type");
3966 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
3967 return Error(Loc0, "invalid indices for insertvalue");
3968 Inst = InsertValueInst::Create(Val0, Val1, Indices);
3969 return AteExtraComma ? InstExtraComma : InstNormal;
3972 //===----------------------------------------------------------------------===//
3973 // Embedded metadata.
3974 //===----------------------------------------------------------------------===//
3976 /// ParseMDNodeVector
3977 /// ::= Element (',' Element)*
3979 /// ::= 'null' | TypeAndValue
3980 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts,
3981 PerFunctionState *PFS) {
3982 // Check for an empty list.
3983 if (Lex.getKind() == lltok::rbrace)
3987 // Null is a special case since it is typeless.
3988 if (EatIfPresent(lltok::kw_null)) {
3994 if (ParseTypeAndValue(V, PFS)) return true;
3996 } while (EatIfPresent(lltok::comma));