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/LLVMContext.h"
22 #include "llvm/MDNode.h"
23 #include "llvm/Module.h"
24 #include "llvm/Operator.h"
25 #include "llvm/ValueSymbolTable.h"
26 #include "llvm/ADT/SmallPtrSet.h"
27 #include "llvm/ADT/StringExtras.h"
28 #include "llvm/Support/ErrorHandling.h"
29 #include "llvm/Support/raw_ostream.h"
33 /// ValID - Represents a reference of a definition of some sort with no type.
34 /// There are several cases where we have to parse the value but where the
35 /// type can depend on later context. This may either be a numeric reference
36 /// or a symbolic (%var) reference. This is just a discriminated union.
39 t_LocalID, t_GlobalID, // ID in UIntVal.
40 t_LocalName, t_GlobalName, // Name in StrVal.
41 t_APSInt, t_APFloat, // Value in APSIntVal/APFloatVal.
42 t_Null, t_Undef, t_Zero, // No value.
43 t_EmptyArray, // No value: []
44 t_Constant, // Value in ConstantVal.
45 t_InlineAsm, // Value in StrVal/StrVal2/UIntVal.
46 t_Metadata // Value in MetadataVal.
51 std::string StrVal, StrVal2;
54 Constant *ConstantVal;
55 MetadataBase *MetadataVal;
56 ValID() : APFloatVal(0.0) {}
60 /// Run: module ::= toplevelentity*
61 bool LLParser::Run() {
65 return ParseTopLevelEntities() ||
66 ValidateEndOfModule();
69 /// ValidateEndOfModule - Do final validity and sanity checks at the end of the
71 bool LLParser::ValidateEndOfModule() {
72 if (!ForwardRefTypes.empty())
73 return Error(ForwardRefTypes.begin()->second.second,
74 "use of undefined type named '" +
75 ForwardRefTypes.begin()->first + "'");
76 if (!ForwardRefTypeIDs.empty())
77 return Error(ForwardRefTypeIDs.begin()->second.second,
78 "use of undefined type '%" +
79 utostr(ForwardRefTypeIDs.begin()->first) + "'");
81 if (!ForwardRefVals.empty())
82 return Error(ForwardRefVals.begin()->second.second,
83 "use of undefined value '@" + ForwardRefVals.begin()->first +
86 if (!ForwardRefValIDs.empty())
87 return Error(ForwardRefValIDs.begin()->second.second,
88 "use of undefined value '@" +
89 utostr(ForwardRefValIDs.begin()->first) + "'");
91 if (!ForwardRefMDNodes.empty())
92 return Error(ForwardRefMDNodes.begin()->second.second,
93 "use of undefined metadata '!" +
94 utostr(ForwardRefMDNodes.begin()->first) + "'");
97 // Look for intrinsic functions and CallInst that need to be upgraded
98 for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; )
99 UpgradeCallsToIntrinsic(FI++); // must be post-increment, as we remove
104 //===----------------------------------------------------------------------===//
105 // Top-Level Entities
106 //===----------------------------------------------------------------------===//
108 bool LLParser::ParseTopLevelEntities() {
110 switch (Lex.getKind()) {
111 default: return TokError("expected top-level entity");
112 case lltok::Eof: return false;
113 //case lltok::kw_define:
114 case lltok::kw_declare: if (ParseDeclare()) return true; break;
115 case lltok::kw_define: if (ParseDefine()) return true; break;
116 case lltok::kw_module: if (ParseModuleAsm()) return true; break;
117 case lltok::kw_target: if (ParseTargetDefinition()) return true; break;
118 case lltok::kw_deplibs: if (ParseDepLibs()) return true; break;
119 case lltok::kw_type: if (ParseUnnamedType()) return true; break;
120 case lltok::StringConstant: // FIXME: REMOVE IN LLVM 3.0
121 case lltok::LocalVar: if (ParseNamedType()) return true; break;
122 case lltok::GlobalVar: if (ParseNamedGlobal()) return true; break;
123 case lltok::Metadata: if (ParseStandaloneMetadata()) return true; break;
125 // The Global variable production with no name can have many different
126 // optional leading prefixes, the production is:
127 // GlobalVar ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
128 // OptionalAddrSpace ('constant'|'global') ...
129 case lltok::kw_private : // OptionalLinkage
130 case lltok::kw_linker_private: // OptionalLinkage
131 case lltok::kw_internal: // OptionalLinkage
132 case lltok::kw_weak: // OptionalLinkage
133 case lltok::kw_weak_odr: // OptionalLinkage
134 case lltok::kw_linkonce: // OptionalLinkage
135 case lltok::kw_linkonce_odr: // OptionalLinkage
136 case lltok::kw_appending: // OptionalLinkage
137 case lltok::kw_dllexport: // OptionalLinkage
138 case lltok::kw_common: // OptionalLinkage
139 case lltok::kw_dllimport: // OptionalLinkage
140 case lltok::kw_extern_weak: // OptionalLinkage
141 case lltok::kw_external: { // OptionalLinkage
142 unsigned Linkage, Visibility;
143 if (ParseOptionalLinkage(Linkage) ||
144 ParseOptionalVisibility(Visibility) ||
145 ParseGlobal("", SMLoc(), Linkage, true, Visibility))
149 case lltok::kw_default: // OptionalVisibility
150 case lltok::kw_hidden: // OptionalVisibility
151 case lltok::kw_protected: { // OptionalVisibility
153 if (ParseOptionalVisibility(Visibility) ||
154 ParseGlobal("", SMLoc(), 0, false, Visibility))
159 case lltok::kw_thread_local: // OptionalThreadLocal
160 case lltok::kw_addrspace: // OptionalAddrSpace
161 case lltok::kw_constant: // GlobalType
162 case lltok::kw_global: // GlobalType
163 if (ParseGlobal("", SMLoc(), 0, false, 0)) return true;
171 /// ::= 'module' 'asm' STRINGCONSTANT
172 bool LLParser::ParseModuleAsm() {
173 assert(Lex.getKind() == lltok::kw_module);
177 if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
178 ParseStringConstant(AsmStr)) return true;
180 const std::string &AsmSoFar = M->getModuleInlineAsm();
181 if (AsmSoFar.empty())
182 M->setModuleInlineAsm(AsmStr);
184 M->setModuleInlineAsm(AsmSoFar+"\n"+AsmStr);
189 /// ::= 'target' 'triple' '=' STRINGCONSTANT
190 /// ::= 'target' 'datalayout' '=' STRINGCONSTANT
191 bool LLParser::ParseTargetDefinition() {
192 assert(Lex.getKind() == lltok::kw_target);
195 default: return TokError("unknown target property");
196 case lltok::kw_triple:
198 if (ParseToken(lltok::equal, "expected '=' after target triple") ||
199 ParseStringConstant(Str))
201 M->setTargetTriple(Str);
203 case lltok::kw_datalayout:
205 if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
206 ParseStringConstant(Str))
208 M->setDataLayout(Str);
214 /// ::= 'deplibs' '=' '[' ']'
215 /// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
216 bool LLParser::ParseDepLibs() {
217 assert(Lex.getKind() == lltok::kw_deplibs);
219 if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
220 ParseToken(lltok::lsquare, "expected '=' after deplibs"))
223 if (EatIfPresent(lltok::rsquare))
227 if (ParseStringConstant(Str)) return true;
230 while (EatIfPresent(lltok::comma)) {
231 if (ParseStringConstant(Str)) return true;
235 return ParseToken(lltok::rsquare, "expected ']' at end of list");
240 bool LLParser::ParseUnnamedType() {
241 assert(Lex.getKind() == lltok::kw_type);
242 LocTy TypeLoc = Lex.getLoc();
243 Lex.Lex(); // eat kw_type
245 PATypeHolder Ty(Type::VoidTy);
246 if (ParseType(Ty)) return true;
248 unsigned TypeID = NumberedTypes.size();
250 // See if this type was previously referenced.
251 std::map<unsigned, std::pair<PATypeHolder, LocTy> >::iterator
252 FI = ForwardRefTypeIDs.find(TypeID);
253 if (FI != ForwardRefTypeIDs.end()) {
254 if (FI->second.first.get() == Ty)
255 return Error(TypeLoc, "self referential type is invalid");
257 cast<DerivedType>(FI->second.first.get())->refineAbstractTypeTo(Ty);
258 Ty = FI->second.first.get();
259 ForwardRefTypeIDs.erase(FI);
262 NumberedTypes.push_back(Ty);
268 /// ::= LocalVar '=' 'type' type
269 bool LLParser::ParseNamedType() {
270 std::string Name = Lex.getStrVal();
271 LocTy NameLoc = Lex.getLoc();
272 Lex.Lex(); // eat LocalVar.
274 PATypeHolder Ty(Type::VoidTy);
276 if (ParseToken(lltok::equal, "expected '=' after name") ||
277 ParseToken(lltok::kw_type, "expected 'type' after name") ||
281 // Set the type name, checking for conflicts as we do so.
282 bool AlreadyExists = M->addTypeName(Name, Ty);
283 if (!AlreadyExists) return false;
285 // See if this type is a forward reference. We need to eagerly resolve
286 // types to allow recursive type redefinitions below.
287 std::map<std::string, std::pair<PATypeHolder, LocTy> >::iterator
288 FI = ForwardRefTypes.find(Name);
289 if (FI != ForwardRefTypes.end()) {
290 if (FI->second.first.get() == Ty)
291 return Error(NameLoc, "self referential type is invalid");
293 cast<DerivedType>(FI->second.first.get())->refineAbstractTypeTo(Ty);
294 Ty = FI->second.first.get();
295 ForwardRefTypes.erase(FI);
298 // Inserting a name that is already defined, get the existing name.
299 const Type *Existing = M->getTypeByName(Name);
300 assert(Existing && "Conflict but no matching type?!");
302 // Otherwise, this is an attempt to redefine a type. That's okay if
303 // the redefinition is identical to the original.
304 // FIXME: REMOVE REDEFINITIONS IN LLVM 3.0
305 if (Existing == Ty) return false;
307 // Any other kind of (non-equivalent) redefinition is an error.
308 return Error(NameLoc, "redefinition of type named '" + Name + "' of type '" +
309 Ty->getDescription() + "'");
314 /// ::= 'declare' FunctionHeader
315 bool LLParser::ParseDeclare() {
316 assert(Lex.getKind() == lltok::kw_declare);
320 return ParseFunctionHeader(F, false);
324 /// ::= 'define' FunctionHeader '{' ...
325 bool LLParser::ParseDefine() {
326 assert(Lex.getKind() == lltok::kw_define);
330 return ParseFunctionHeader(F, true) ||
331 ParseFunctionBody(*F);
337 bool LLParser::ParseGlobalType(bool &IsConstant) {
338 if (Lex.getKind() == lltok::kw_constant)
340 else if (Lex.getKind() == lltok::kw_global)
344 return TokError("expected 'global' or 'constant'");
350 /// ParseNamedGlobal:
351 /// GlobalVar '=' OptionalVisibility ALIAS ...
352 /// GlobalVar '=' OptionalLinkage OptionalVisibility ... -> global variable
353 bool LLParser::ParseNamedGlobal() {
354 assert(Lex.getKind() == lltok::GlobalVar);
355 LocTy NameLoc = Lex.getLoc();
356 std::string Name = Lex.getStrVal();
360 unsigned Linkage, Visibility;
361 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
362 ParseOptionalLinkage(Linkage, HasLinkage) ||
363 ParseOptionalVisibility(Visibility))
366 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
367 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
368 return ParseAlias(Name, NameLoc, Visibility);
372 // ::= '!' STRINGCONSTANT
373 bool LLParser::ParseMDString(MetadataBase *&MDS) {
375 if (ParseStringConstant(Str)) return true;
376 MDS = Context.getMDString(Str.data(), Str.data() + Str.size());
381 // ::= '!' MDNodeNumber
382 bool LLParser::ParseMDNode(MetadataBase *&Node) {
383 // !{ ..., !42, ... }
385 if (ParseUInt32(MID)) return true;
387 // Check existing MDNode.
388 std::map<unsigned, MetadataBase *>::iterator I = MetadataCache.find(MID);
389 if (I != MetadataCache.end()) {
394 // Check known forward references.
395 std::map<unsigned, std::pair<MetadataBase *, LocTy> >::iterator
396 FI = ForwardRefMDNodes.find(MID);
397 if (FI != ForwardRefMDNodes.end()) {
398 Node = FI->second.first;
402 // Create MDNode forward reference
403 SmallVector<Value *, 1> Elts;
404 std::string FwdRefName = "llvm.mdnode.fwdref." + utostr(MID);
405 Elts.push_back(Context.getMDString(FwdRefName));
406 MDNode *FwdNode = Context.getMDNode(Elts.data(), Elts.size());
407 ForwardRefMDNodes[MID] = std::make_pair(FwdNode, Lex.getLoc());
412 /// ParseStandaloneMetadata:
414 bool LLParser::ParseStandaloneMetadata() {
415 assert(Lex.getKind() == lltok::Metadata);
417 unsigned MetadataID = 0;
418 if (ParseUInt32(MetadataID))
420 if (MetadataCache.find(MetadataID) != MetadataCache.end())
421 return TokError("Metadata id is already used");
422 if (ParseToken(lltok::equal, "expected '=' here"))
426 PATypeHolder Ty(Type::VoidTy);
427 if (ParseType(Ty, TyLoc))
430 if (Lex.getKind() != lltok::Metadata)
431 return TokError("Expected metadata here");
434 if (Lex.getKind() != lltok::lbrace)
435 return TokError("Expected '{' here");
437 SmallVector<Value *, 16> Elts;
438 if (ParseMDNodeVector(Elts)
439 || ParseToken(lltok::rbrace, "exected end of metadata node"))
442 MDNode *Init = Context.getMDNode(Elts.data(), Elts.size());
443 MetadataCache[MetadataID] = Init;
444 std::map<unsigned, std::pair<MetadataBase *, LocTy> >::iterator
445 FI = ForwardRefMDNodes.find(MetadataID);
446 if (FI != ForwardRefMDNodes.end()) {
447 MDNode *FwdNode = cast<MDNode>(FI->second.first);
448 FwdNode->replaceAllUsesWith(Init);
449 ForwardRefMDNodes.erase(FI);
456 /// ::= GlobalVar '=' OptionalVisibility 'alias' OptionalLinkage Aliasee
459 /// ::= 'bitcast' '(' TypeAndValue 'to' Type ')'
460 /// ::= 'getelementptr' '(' ... ')'
462 /// Everything through visibility has already been parsed.
464 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc,
465 unsigned Visibility) {
466 assert(Lex.getKind() == lltok::kw_alias);
469 LocTy LinkageLoc = Lex.getLoc();
470 if (ParseOptionalLinkage(Linkage))
473 if (Linkage != GlobalValue::ExternalLinkage &&
474 Linkage != GlobalValue::WeakAnyLinkage &&
475 Linkage != GlobalValue::WeakODRLinkage &&
476 Linkage != GlobalValue::InternalLinkage &&
477 Linkage != GlobalValue::PrivateLinkage &&
478 Linkage != GlobalValue::LinkerPrivateLinkage)
479 return Error(LinkageLoc, "invalid linkage type for alias");
482 LocTy AliaseeLoc = Lex.getLoc();
483 if (Lex.getKind() != lltok::kw_bitcast &&
484 Lex.getKind() != lltok::kw_getelementptr) {
485 if (ParseGlobalTypeAndValue(Aliasee)) return true;
487 // The bitcast dest type is not present, it is implied by the dest type.
489 if (ParseValID(ID)) return true;
490 if (ID.Kind != ValID::t_Constant)
491 return Error(AliaseeLoc, "invalid aliasee");
492 Aliasee = ID.ConstantVal;
495 if (!isa<PointerType>(Aliasee->getType()))
496 return Error(AliaseeLoc, "alias must have pointer type");
498 // Okay, create the alias but do not insert it into the module yet.
499 GlobalAlias* GA = new GlobalAlias(Aliasee->getType(),
500 (GlobalValue::LinkageTypes)Linkage, Name,
502 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
504 // See if this value already exists in the symbol table. If so, it is either
505 // a redefinition or a definition of a forward reference.
506 if (GlobalValue *Val =
507 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name))) {
508 // See if this was a redefinition. If so, there is no entry in
510 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
511 I = ForwardRefVals.find(Name);
512 if (I == ForwardRefVals.end())
513 return Error(NameLoc, "redefinition of global named '@" + Name + "'");
515 // Otherwise, this was a definition of forward ref. Verify that types
517 if (Val->getType() != GA->getType())
518 return Error(NameLoc,
519 "forward reference and definition of alias have different types");
521 // If they agree, just RAUW the old value with the alias and remove the
523 Val->replaceAllUsesWith(GA);
524 Val->eraseFromParent();
525 ForwardRefVals.erase(I);
528 // Insert into the module, we know its name won't collide now.
529 M->getAliasList().push_back(GA);
530 assert(GA->getNameStr() == Name && "Should not be a name conflict!");
536 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalThreadLocal
537 /// OptionalAddrSpace GlobalType Type Const
538 /// ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
539 /// OptionalAddrSpace GlobalType Type Const
541 /// Everything through visibility has been parsed already.
543 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
544 unsigned Linkage, bool HasLinkage,
545 unsigned Visibility) {
547 bool ThreadLocal, IsConstant;
550 PATypeHolder Ty(Type::VoidTy);
551 if (ParseOptionalToken(lltok::kw_thread_local, ThreadLocal) ||
552 ParseOptionalAddrSpace(AddrSpace) ||
553 ParseGlobalType(IsConstant) ||
554 ParseType(Ty, TyLoc))
557 // If the linkage is specified and is external, then no initializer is
560 if (!HasLinkage || (Linkage != GlobalValue::DLLImportLinkage &&
561 Linkage != GlobalValue::ExternalWeakLinkage &&
562 Linkage != GlobalValue::ExternalLinkage)) {
563 if (ParseGlobalValue(Ty, Init))
567 if (isa<FunctionType>(Ty) || Ty == Type::LabelTy)
568 return Error(TyLoc, "invalid type for global variable");
570 GlobalVariable *GV = 0;
572 // See if the global was forward referenced, if so, use the global.
574 if ((GV = M->getGlobalVariable(Name, true)) &&
575 !ForwardRefVals.erase(Name))
576 return Error(NameLoc, "redefinition of global '@" + Name + "'");
578 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
579 I = ForwardRefValIDs.find(NumberedVals.size());
580 if (I != ForwardRefValIDs.end()) {
581 GV = cast<GlobalVariable>(I->second.first);
582 ForwardRefValIDs.erase(I);
587 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, 0,
588 Name, 0, false, AddrSpace);
590 if (GV->getType()->getElementType() != Ty)
592 "forward reference and definition of global have different types");
594 // Move the forward-reference to the correct spot in the module.
595 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
599 NumberedVals.push_back(GV);
601 // Set the parsed properties on the global.
603 GV->setInitializer(Init);
604 GV->setConstant(IsConstant);
605 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
606 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
607 GV->setThreadLocal(ThreadLocal);
609 // Parse attributes on the global.
610 while (Lex.getKind() == lltok::comma) {
613 if (Lex.getKind() == lltok::kw_section) {
615 GV->setSection(Lex.getStrVal());
616 if (ParseToken(lltok::StringConstant, "expected global section string"))
618 } else if (Lex.getKind() == lltok::kw_align) {
620 if (ParseOptionalAlignment(Alignment)) return true;
621 GV->setAlignment(Alignment);
623 TokError("unknown global variable property!");
631 //===----------------------------------------------------------------------===//
632 // GlobalValue Reference/Resolution Routines.
633 //===----------------------------------------------------------------------===//
635 /// GetGlobalVal - Get a value with the specified name or ID, creating a
636 /// forward reference record if needed. This can return null if the value
637 /// exists but does not have the right type.
638 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, const Type *Ty,
640 const PointerType *PTy = dyn_cast<PointerType>(Ty);
642 Error(Loc, "global variable reference must have pointer type");
646 // Look this name up in the normal function symbol table.
648 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
650 // If this is a forward reference for the value, see if we already created a
651 // forward ref record.
653 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
654 I = ForwardRefVals.find(Name);
655 if (I != ForwardRefVals.end())
656 Val = I->second.first;
659 // If we have the value in the symbol table or fwd-ref table, return it.
661 if (Val->getType() == Ty) return Val;
662 Error(Loc, "'@" + Name + "' defined with type '" +
663 Val->getType()->getDescription() + "'");
667 // Otherwise, create a new forward reference for this value and remember it.
669 if (const FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType())) {
670 // Function types can return opaque but functions can't.
671 if (isa<OpaqueType>(FT->getReturnType())) {
672 Error(Loc, "function may not return opaque type");
676 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
678 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
679 GlobalValue::ExternalWeakLinkage, 0, Name);
682 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
686 GlobalValue *LLParser::GetGlobalVal(unsigned ID, const Type *Ty, LocTy Loc) {
687 const PointerType *PTy = dyn_cast<PointerType>(Ty);
689 Error(Loc, "global variable reference must have pointer type");
693 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
695 // If this is a forward reference for the value, see if we already created a
696 // forward ref record.
698 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
699 I = ForwardRefValIDs.find(ID);
700 if (I != ForwardRefValIDs.end())
701 Val = I->second.first;
704 // If we have the value in the symbol table or fwd-ref table, return it.
706 if (Val->getType() == Ty) return Val;
707 Error(Loc, "'@" + utostr(ID) + "' defined with type '" +
708 Val->getType()->getDescription() + "'");
712 // Otherwise, create a new forward reference for this value and remember it.
714 if (const FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType())) {
715 // Function types can return opaque but functions can't.
716 if (isa<OpaqueType>(FT->getReturnType())) {
717 Error(Loc, "function may not return opaque type");
720 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
722 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
723 GlobalValue::ExternalWeakLinkage, 0, "");
726 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
731 //===----------------------------------------------------------------------===//
733 //===----------------------------------------------------------------------===//
735 /// ParseToken - If the current token has the specified kind, eat it and return
736 /// success. Otherwise, emit the specified error and return failure.
737 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
738 if (Lex.getKind() != T)
739 return TokError(ErrMsg);
744 /// ParseStringConstant
745 /// ::= StringConstant
746 bool LLParser::ParseStringConstant(std::string &Result) {
747 if (Lex.getKind() != lltok::StringConstant)
748 return TokError("expected string constant");
749 Result = Lex.getStrVal();
756 bool LLParser::ParseUInt32(unsigned &Val) {
757 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
758 return TokError("expected integer");
759 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
760 if (Val64 != unsigned(Val64))
761 return TokError("expected 32-bit integer (too large)");
768 /// ParseOptionalAddrSpace
770 /// := 'addrspace' '(' uint32 ')'
771 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
773 if (!EatIfPresent(lltok::kw_addrspace))
775 return ParseToken(lltok::lparen, "expected '(' in address space") ||
776 ParseUInt32(AddrSpace) ||
777 ParseToken(lltok::rparen, "expected ')' in address space");
780 /// ParseOptionalAttrs - Parse a potentially empty attribute list. AttrKind
781 /// indicates what kind of attribute list this is: 0: function arg, 1: result,
782 /// 2: function attr.
783 /// 3: function arg after value: FIXME: REMOVE IN LLVM 3.0
784 bool LLParser::ParseOptionalAttrs(unsigned &Attrs, unsigned AttrKind) {
785 Attrs = Attribute::None;
786 LocTy AttrLoc = Lex.getLoc();
789 switch (Lex.getKind()) {
792 // Treat these as signext/zeroext if they occur in the argument list after
793 // the value, as in "call i8 @foo(i8 10 sext)". If they occur before the
794 // value, as in "call i8 @foo(i8 sext (" then it is part of a constant
796 // FIXME: REMOVE THIS IN LLVM 3.0
798 if (Lex.getKind() == lltok::kw_sext)
799 Attrs |= Attribute::SExt;
801 Attrs |= Attribute::ZExt;
805 default: // End of attributes.
806 if (AttrKind != 2 && (Attrs & Attribute::FunctionOnly))
807 return Error(AttrLoc, "invalid use of function-only attribute");
809 if (AttrKind != 0 && AttrKind != 3 && (Attrs & Attribute::ParameterOnly))
810 return Error(AttrLoc, "invalid use of parameter-only attribute");
813 case lltok::kw_zeroext: Attrs |= Attribute::ZExt; break;
814 case lltok::kw_signext: Attrs |= Attribute::SExt; break;
815 case lltok::kw_inreg: Attrs |= Attribute::InReg; break;
816 case lltok::kw_sret: Attrs |= Attribute::StructRet; break;
817 case lltok::kw_noalias: Attrs |= Attribute::NoAlias; break;
818 case lltok::kw_nocapture: Attrs |= Attribute::NoCapture; break;
819 case lltok::kw_byval: Attrs |= Attribute::ByVal; break;
820 case lltok::kw_nest: Attrs |= Attribute::Nest; break;
822 case lltok::kw_noreturn: Attrs |= Attribute::NoReturn; break;
823 case lltok::kw_nounwind: Attrs |= Attribute::NoUnwind; break;
824 case lltok::kw_noinline: Attrs |= Attribute::NoInline; break;
825 case lltok::kw_readnone: Attrs |= Attribute::ReadNone; break;
826 case lltok::kw_readonly: Attrs |= Attribute::ReadOnly; break;
827 case lltok::kw_alwaysinline: Attrs |= Attribute::AlwaysInline; break;
828 case lltok::kw_optsize: Attrs |= Attribute::OptimizeForSize; break;
829 case lltok::kw_ssp: Attrs |= Attribute::StackProtect; break;
830 case lltok::kw_sspreq: Attrs |= Attribute::StackProtectReq; break;
831 case lltok::kw_noredzone: Attrs |= Attribute::NoRedZone; break;
832 case lltok::kw_noimplicitfloat: Attrs |= Attribute::NoImplicitFloat; break;
833 case lltok::kw_naked: Attrs |= Attribute::Naked; break;
835 case lltok::kw_align: {
837 if (ParseOptionalAlignment(Alignment))
839 Attrs |= Attribute::constructAlignmentFromInt(Alignment);
847 /// ParseOptionalLinkage
850 /// ::= 'linker_private'
855 /// ::= 'linkonce_odr'
860 /// ::= 'extern_weak'
862 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
864 switch (Lex.getKind()) {
865 default: Res=GlobalValue::ExternalLinkage; return false;
866 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
867 case lltok::kw_linker_private: Res = GlobalValue::LinkerPrivateLinkage; break;
868 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
869 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
870 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
871 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
872 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
873 case lltok::kw_available_externally:
874 Res = GlobalValue::AvailableExternallyLinkage;
876 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
877 case lltok::kw_dllexport: Res = GlobalValue::DLLExportLinkage; break;
878 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
879 case lltok::kw_dllimport: Res = GlobalValue::DLLImportLinkage; break;
880 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
881 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
888 /// ParseOptionalVisibility
894 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
895 switch (Lex.getKind()) {
896 default: Res = GlobalValue::DefaultVisibility; return false;
897 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
898 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
899 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
905 /// ParseOptionalCallingConv
910 /// ::= 'x86_stdcallcc'
911 /// ::= 'x86_fastcallcc'
913 /// ::= 'arm_aapcscc'
914 /// ::= 'arm_aapcs_vfpcc'
917 bool LLParser::ParseOptionalCallingConv(unsigned &CC) {
918 switch (Lex.getKind()) {
919 default: CC = CallingConv::C; return false;
920 case lltok::kw_ccc: CC = CallingConv::C; break;
921 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
922 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
923 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
924 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
925 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
926 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
927 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
928 case lltok::kw_cc: Lex.Lex(); return ParseUInt32(CC);
934 /// ParseOptionalAlignment
937 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
939 if (!EatIfPresent(lltok::kw_align))
941 LocTy AlignLoc = Lex.getLoc();
942 if (ParseUInt32(Alignment)) return true;
943 if (!isPowerOf2_32(Alignment))
944 return Error(AlignLoc, "alignment is not a power of two");
948 /// ParseOptionalCommaAlignment
950 /// ::= ',' 'align' 4
951 bool LLParser::ParseOptionalCommaAlignment(unsigned &Alignment) {
953 if (!EatIfPresent(lltok::comma))
955 return ParseToken(lltok::kw_align, "expected 'align'") ||
956 ParseUInt32(Alignment);
960 /// ::= (',' uint32)+
961 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices) {
962 if (Lex.getKind() != lltok::comma)
963 return TokError("expected ',' as start of index list");
965 while (EatIfPresent(lltok::comma)) {
967 if (ParseUInt32(Idx)) return true;
968 Indices.push_back(Idx);
974 //===----------------------------------------------------------------------===//
976 //===----------------------------------------------------------------------===//
978 /// ParseType - Parse and resolve a full type.
979 bool LLParser::ParseType(PATypeHolder &Result, bool AllowVoid) {
980 LocTy TypeLoc = Lex.getLoc();
981 if (ParseTypeRec(Result)) return true;
983 // Verify no unresolved uprefs.
985 return Error(UpRefs.back().Loc, "invalid unresolved type up reference");
987 if (!AllowVoid && Result.get() == Type::VoidTy)
988 return Error(TypeLoc, "void type only allowed for function results");
993 /// HandleUpRefs - Every time we finish a new layer of types, this function is
994 /// called. It loops through the UpRefs vector, which is a list of the
995 /// currently active types. For each type, if the up-reference is contained in
996 /// the newly completed type, we decrement the level count. When the level
997 /// count reaches zero, the up-referenced type is the type that is passed in:
998 /// thus we can complete the cycle.
1000 PATypeHolder LLParser::HandleUpRefs(const Type *ty) {
1001 // If Ty isn't abstract, or if there are no up-references in it, then there is
1002 // nothing to resolve here.
1003 if (!ty->isAbstract() || UpRefs.empty()) return ty;
1005 PATypeHolder Ty(ty);
1007 errs() << "Type '" << Ty->getDescription()
1008 << "' newly formed. Resolving upreferences.\n"
1009 << UpRefs.size() << " upreferences active!\n";
1012 // If we find any resolvable upreferences (i.e., those whose NestingLevel goes
1013 // to zero), we resolve them all together before we resolve them to Ty. At
1014 // the end of the loop, if there is anything to resolve to Ty, it will be in
1016 OpaqueType *TypeToResolve = 0;
1018 for (unsigned i = 0; i != UpRefs.size(); ++i) {
1019 // Determine if 'Ty' directly contains this up-references 'LastContainedTy'.
1021 std::find(Ty->subtype_begin(), Ty->subtype_end(),
1022 UpRefs[i].LastContainedTy) != Ty->subtype_end();
1025 errs() << " UR#" << i << " - TypeContains(" << Ty->getDescription() << ", "
1026 << UpRefs[i].LastContainedTy->getDescription() << ") = "
1027 << (ContainsType ? "true" : "false")
1028 << " level=" << UpRefs[i].NestingLevel << "\n";
1033 // Decrement level of upreference
1034 unsigned Level = --UpRefs[i].NestingLevel;
1035 UpRefs[i].LastContainedTy = Ty;
1037 // If the Up-reference has a non-zero level, it shouldn't be resolved yet.
1042 errs() << " * Resolving upreference for " << UpRefs[i].UpRefTy << "\n";
1045 TypeToResolve = UpRefs[i].UpRefTy;
1047 UpRefs[i].UpRefTy->refineAbstractTypeTo(TypeToResolve);
1048 UpRefs.erase(UpRefs.begin()+i); // Remove from upreference list.
1049 --i; // Do not skip the next element.
1053 TypeToResolve->refineAbstractTypeTo(Ty);
1059 /// ParseTypeRec - The recursive function used to process the internal
1060 /// implementation details of types.
1061 bool LLParser::ParseTypeRec(PATypeHolder &Result) {
1062 switch (Lex.getKind()) {
1064 return TokError("expected type");
1066 // TypeRec ::= 'float' | 'void' (etc)
1067 Result = Lex.getTyVal();
1070 case lltok::kw_opaque:
1071 // TypeRec ::= 'opaque'
1072 Result = Context.getOpaqueType();
1076 // TypeRec ::= '{' ... '}'
1077 if (ParseStructType(Result, false))
1080 case lltok::lsquare:
1081 // TypeRec ::= '[' ... ']'
1082 Lex.Lex(); // eat the lsquare.
1083 if (ParseArrayVectorType(Result, false))
1086 case lltok::less: // Either vector or packed struct.
1087 // TypeRec ::= '<' ... '>'
1089 if (Lex.getKind() == lltok::lbrace) {
1090 if (ParseStructType(Result, true) ||
1091 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1093 } else if (ParseArrayVectorType(Result, true))
1096 case lltok::LocalVar:
1097 case lltok::StringConstant: // FIXME: REMOVE IN LLVM 3.0
1099 if (const Type *T = M->getTypeByName(Lex.getStrVal())) {
1102 Result = Context.getOpaqueType();
1103 ForwardRefTypes.insert(std::make_pair(Lex.getStrVal(),
1104 std::make_pair(Result,
1106 M->addTypeName(Lex.getStrVal(), Result.get());
1111 case lltok::LocalVarID:
1113 if (Lex.getUIntVal() < NumberedTypes.size())
1114 Result = NumberedTypes[Lex.getUIntVal()];
1116 std::map<unsigned, std::pair<PATypeHolder, LocTy> >::iterator
1117 I = ForwardRefTypeIDs.find(Lex.getUIntVal());
1118 if (I != ForwardRefTypeIDs.end())
1119 Result = I->second.first;
1121 Result = Context.getOpaqueType();
1122 ForwardRefTypeIDs.insert(std::make_pair(Lex.getUIntVal(),
1123 std::make_pair(Result,
1129 case lltok::backslash: {
1130 // TypeRec ::= '\' 4
1133 if (ParseUInt32(Val)) return true;
1134 OpaqueType *OT = Context.getOpaqueType(); //Use temporary placeholder.
1135 UpRefs.push_back(UpRefRecord(Lex.getLoc(), Val, OT));
1141 // Parse the type suffixes.
1143 switch (Lex.getKind()) {
1145 default: return false;
1147 // TypeRec ::= TypeRec '*'
1149 if (Result.get() == Type::LabelTy)
1150 return TokError("basic block pointers are invalid");
1151 if (Result.get() == Type::VoidTy)
1152 return TokError("pointers to void are invalid; use i8* instead");
1153 if (!PointerType::isValidElementType(Result.get()))
1154 return TokError("pointer to this type is invalid");
1155 Result = HandleUpRefs(Context.getPointerTypeUnqual(Result.get()));
1159 // TypeRec ::= TypeRec 'addrspace' '(' uint32 ')' '*'
1160 case lltok::kw_addrspace: {
1161 if (Result.get() == Type::LabelTy)
1162 return TokError("basic block pointers are invalid");
1163 if (Result.get() == Type::VoidTy)
1164 return TokError("pointers to void are invalid; use i8* instead");
1165 if (!PointerType::isValidElementType(Result.get()))
1166 return TokError("pointer to this type is invalid");
1168 if (ParseOptionalAddrSpace(AddrSpace) ||
1169 ParseToken(lltok::star, "expected '*' in address space"))
1172 Result = HandleUpRefs(Context.getPointerType(Result.get(), AddrSpace));
1176 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1178 if (ParseFunctionType(Result))
1185 /// ParseParameterList
1187 /// ::= '(' Arg (',' Arg)* ')'
1189 /// ::= Type OptionalAttributes Value OptionalAttributes
1190 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1191 PerFunctionState &PFS) {
1192 if (ParseToken(lltok::lparen, "expected '(' in call"))
1195 while (Lex.getKind() != lltok::rparen) {
1196 // If this isn't the first argument, we need a comma.
1197 if (!ArgList.empty() &&
1198 ParseToken(lltok::comma, "expected ',' in argument list"))
1201 // Parse the argument.
1203 PATypeHolder ArgTy(Type::VoidTy);
1204 unsigned ArgAttrs1, ArgAttrs2;
1206 if (ParseType(ArgTy, ArgLoc) ||
1207 ParseOptionalAttrs(ArgAttrs1, 0) ||
1208 ParseValue(ArgTy, V, PFS) ||
1209 // FIXME: Should not allow attributes after the argument, remove this in
1211 ParseOptionalAttrs(ArgAttrs2, 3))
1213 ArgList.push_back(ParamInfo(ArgLoc, V, ArgAttrs1|ArgAttrs2));
1216 Lex.Lex(); // Lex the ')'.
1222 /// ParseArgumentList - Parse the argument list for a function type or function
1223 /// prototype. If 'inType' is true then we are parsing a FunctionType.
1224 /// ::= '(' ArgTypeListI ')'
1228 /// ::= ArgTypeList ',' '...'
1229 /// ::= ArgType (',' ArgType)*
1231 bool LLParser::ParseArgumentList(std::vector<ArgInfo> &ArgList,
1232 bool &isVarArg, bool inType) {
1234 assert(Lex.getKind() == lltok::lparen);
1235 Lex.Lex(); // eat the (.
1237 if (Lex.getKind() == lltok::rparen) {
1239 } else if (Lex.getKind() == lltok::dotdotdot) {
1243 LocTy TypeLoc = Lex.getLoc();
1244 PATypeHolder ArgTy(Type::VoidTy);
1248 // If we're parsing a type, use ParseTypeRec, because we allow recursive
1249 // types (such as a function returning a pointer to itself). If parsing a
1250 // function prototype, we require fully resolved types.
1251 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1252 ParseOptionalAttrs(Attrs, 0)) return true;
1254 if (ArgTy == Type::VoidTy)
1255 return Error(TypeLoc, "argument can not have void type");
1257 if (Lex.getKind() == lltok::LocalVar ||
1258 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1259 Name = Lex.getStrVal();
1263 if (!FunctionType::isValidArgumentType(ArgTy))
1264 return Error(TypeLoc, "invalid type for function argument");
1266 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1268 while (EatIfPresent(lltok::comma)) {
1269 // Handle ... at end of arg list.
1270 if (EatIfPresent(lltok::dotdotdot)) {
1275 // Otherwise must be an argument type.
1276 TypeLoc = Lex.getLoc();
1277 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1278 ParseOptionalAttrs(Attrs, 0)) return true;
1280 if (ArgTy == Type::VoidTy)
1281 return Error(TypeLoc, "argument can not have void type");
1283 if (Lex.getKind() == lltok::LocalVar ||
1284 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1285 Name = Lex.getStrVal();
1291 if (!ArgTy->isFirstClassType() && !isa<OpaqueType>(ArgTy))
1292 return Error(TypeLoc, "invalid type for function argument");
1294 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1298 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1301 /// ParseFunctionType
1302 /// ::= Type ArgumentList OptionalAttrs
1303 bool LLParser::ParseFunctionType(PATypeHolder &Result) {
1304 assert(Lex.getKind() == lltok::lparen);
1306 if (!FunctionType::isValidReturnType(Result))
1307 return TokError("invalid function return type");
1309 std::vector<ArgInfo> ArgList;
1312 if (ParseArgumentList(ArgList, isVarArg, true) ||
1313 // FIXME: Allow, but ignore attributes on function types!
1314 // FIXME: Remove in LLVM 3.0
1315 ParseOptionalAttrs(Attrs, 2))
1318 // Reject names on the arguments lists.
1319 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1320 if (!ArgList[i].Name.empty())
1321 return Error(ArgList[i].Loc, "argument name invalid in function type");
1322 if (!ArgList[i].Attrs != 0) {
1323 // Allow but ignore attributes on function types; this permits
1325 // FIXME: REJECT ATTRIBUTES ON FUNCTION TYPES in LLVM 3.0
1329 std::vector<const Type*> ArgListTy;
1330 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1331 ArgListTy.push_back(ArgList[i].Type);
1333 Result = HandleUpRefs(Context.getFunctionType(Result.get(),
1334 ArgListTy, isVarArg));
1338 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
1341 /// ::= '{' TypeRec (',' TypeRec)* '}'
1342 /// ::= '<' '{' '}' '>'
1343 /// ::= '<' '{' TypeRec (',' TypeRec)* '}' '>'
1344 bool LLParser::ParseStructType(PATypeHolder &Result, bool Packed) {
1345 assert(Lex.getKind() == lltok::lbrace);
1346 Lex.Lex(); // Consume the '{'
1348 if (EatIfPresent(lltok::rbrace)) {
1349 Result = Context.getStructType(Packed);
1353 std::vector<PATypeHolder> ParamsList;
1354 LocTy EltTyLoc = Lex.getLoc();
1355 if (ParseTypeRec(Result)) return true;
1356 ParamsList.push_back(Result);
1358 if (Result == Type::VoidTy)
1359 return Error(EltTyLoc, "struct element can not have void type");
1360 if (!StructType::isValidElementType(Result))
1361 return Error(EltTyLoc, "invalid element type for struct");
1363 while (EatIfPresent(lltok::comma)) {
1364 EltTyLoc = Lex.getLoc();
1365 if (ParseTypeRec(Result)) return true;
1367 if (Result == Type::VoidTy)
1368 return Error(EltTyLoc, "struct element can not have void type");
1369 if (!StructType::isValidElementType(Result))
1370 return Error(EltTyLoc, "invalid element type for struct");
1372 ParamsList.push_back(Result);
1375 if (ParseToken(lltok::rbrace, "expected '}' at end of struct"))
1378 std::vector<const Type*> ParamsListTy;
1379 for (unsigned i = 0, e = ParamsList.size(); i != e; ++i)
1380 ParamsListTy.push_back(ParamsList[i].get());
1381 Result = HandleUpRefs(Context.getStructType(ParamsListTy, Packed));
1385 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
1386 /// token has already been consumed.
1388 /// ::= '[' APSINTVAL 'x' Types ']'
1389 /// ::= '<' APSINTVAL 'x' Types '>'
1390 bool LLParser::ParseArrayVectorType(PATypeHolder &Result, bool isVector) {
1391 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
1392 Lex.getAPSIntVal().getBitWidth() > 64)
1393 return TokError("expected number in address space");
1395 LocTy SizeLoc = Lex.getLoc();
1396 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
1399 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
1402 LocTy TypeLoc = Lex.getLoc();
1403 PATypeHolder EltTy(Type::VoidTy);
1404 if (ParseTypeRec(EltTy)) return true;
1406 if (EltTy == Type::VoidTy)
1407 return Error(TypeLoc, "array and vector element type cannot be void");
1409 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
1410 "expected end of sequential type"))
1415 return Error(SizeLoc, "zero element vector is illegal");
1416 if ((unsigned)Size != Size)
1417 return Error(SizeLoc, "size too large for vector");
1418 if (!VectorType::isValidElementType(EltTy))
1419 return Error(TypeLoc, "vector element type must be fp or integer");
1420 Result = Context.getVectorType(EltTy, unsigned(Size));
1422 if (!ArrayType::isValidElementType(EltTy))
1423 return Error(TypeLoc, "invalid array element type");
1424 Result = HandleUpRefs(Context.getArrayType(EltTy, Size));
1429 //===----------------------------------------------------------------------===//
1430 // Function Semantic Analysis.
1431 //===----------------------------------------------------------------------===//
1433 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f)
1436 // Insert unnamed arguments into the NumberedVals list.
1437 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
1440 NumberedVals.push_back(AI);
1443 LLParser::PerFunctionState::~PerFunctionState() {
1444 // If there were any forward referenced non-basicblock values, delete them.
1445 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
1446 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
1447 if (!isa<BasicBlock>(I->second.first)) {
1448 I->second.first->replaceAllUsesWith(
1449 P.getContext().getUndef(I->second.first->getType()));
1450 delete I->second.first;
1451 I->second.first = 0;
1454 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1455 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
1456 if (!isa<BasicBlock>(I->second.first)) {
1457 I->second.first->replaceAllUsesWith(
1458 P.getContext().getUndef(I->second.first->getType()));
1459 delete I->second.first;
1460 I->second.first = 0;
1464 bool LLParser::PerFunctionState::VerifyFunctionComplete() {
1465 if (!ForwardRefVals.empty())
1466 return P.Error(ForwardRefVals.begin()->second.second,
1467 "use of undefined value '%" + ForwardRefVals.begin()->first +
1469 if (!ForwardRefValIDs.empty())
1470 return P.Error(ForwardRefValIDs.begin()->second.second,
1471 "use of undefined value '%" +
1472 utostr(ForwardRefValIDs.begin()->first) + "'");
1477 /// GetVal - Get a value with the specified name or ID, creating a
1478 /// forward reference record if needed. This can return null if the value
1479 /// exists but does not have the right type.
1480 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
1481 const Type *Ty, LocTy Loc) {
1482 // Look this name up in the normal function symbol table.
1483 Value *Val = F.getValueSymbolTable().lookup(Name);
1485 // If this is a forward reference for the value, see if we already created a
1486 // forward ref record.
1488 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1489 I = ForwardRefVals.find(Name);
1490 if (I != ForwardRefVals.end())
1491 Val = I->second.first;
1494 // If we have the value in the symbol table or fwd-ref table, return it.
1496 if (Val->getType() == Ty) return Val;
1497 if (Ty == Type::LabelTy)
1498 P.Error(Loc, "'%" + Name + "' is not a basic block");
1500 P.Error(Loc, "'%" + Name + "' defined with type '" +
1501 Val->getType()->getDescription() + "'");
1505 // Don't make placeholders with invalid type.
1506 if (!Ty->isFirstClassType() && !isa<OpaqueType>(Ty) && Ty != Type::LabelTy) {
1507 P.Error(Loc, "invalid use of a non-first-class type");
1511 // Otherwise, create a new forward reference for this value and remember it.
1513 if (Ty == Type::LabelTy)
1514 FwdVal = BasicBlock::Create(Name, &F);
1516 FwdVal = new Argument(Ty, Name);
1518 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1522 Value *LLParser::PerFunctionState::GetVal(unsigned ID, const Type *Ty,
1524 // Look this name up in the normal function symbol table.
1525 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
1527 // If this is a forward reference for the value, see if we already created a
1528 // forward ref record.
1530 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1531 I = ForwardRefValIDs.find(ID);
1532 if (I != ForwardRefValIDs.end())
1533 Val = I->second.first;
1536 // If we have the value in the symbol table or fwd-ref table, return it.
1538 if (Val->getType() == Ty) return Val;
1539 if (Ty == Type::LabelTy)
1540 P.Error(Loc, "'%" + utostr(ID) + "' is not a basic block");
1542 P.Error(Loc, "'%" + utostr(ID) + "' defined with type '" +
1543 Val->getType()->getDescription() + "'");
1547 if (!Ty->isFirstClassType() && !isa<OpaqueType>(Ty) && Ty != Type::LabelTy) {
1548 P.Error(Loc, "invalid use of a non-first-class type");
1552 // Otherwise, create a new forward reference for this value and remember it.
1554 if (Ty == Type::LabelTy)
1555 FwdVal = BasicBlock::Create("", &F);
1557 FwdVal = new Argument(Ty);
1559 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1563 /// SetInstName - After an instruction is parsed and inserted into its
1564 /// basic block, this installs its name.
1565 bool LLParser::PerFunctionState::SetInstName(int NameID,
1566 const std::string &NameStr,
1567 LocTy NameLoc, Instruction *Inst) {
1568 // If this instruction has void type, it cannot have a name or ID specified.
1569 if (Inst->getType() == Type::VoidTy) {
1570 if (NameID != -1 || !NameStr.empty())
1571 return P.Error(NameLoc, "instructions returning void cannot have a name");
1575 // If this was a numbered instruction, verify that the instruction is the
1576 // expected value and resolve any forward references.
1577 if (NameStr.empty()) {
1578 // If neither a name nor an ID was specified, just use the next ID.
1580 NameID = NumberedVals.size();
1582 if (unsigned(NameID) != NumberedVals.size())
1583 return P.Error(NameLoc, "instruction expected to be numbered '%" +
1584 utostr(NumberedVals.size()) + "'");
1586 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
1587 ForwardRefValIDs.find(NameID);
1588 if (FI != ForwardRefValIDs.end()) {
1589 if (FI->second.first->getType() != Inst->getType())
1590 return P.Error(NameLoc, "instruction forward referenced with type '" +
1591 FI->second.first->getType()->getDescription() + "'");
1592 FI->second.first->replaceAllUsesWith(Inst);
1593 ForwardRefValIDs.erase(FI);
1596 NumberedVals.push_back(Inst);
1600 // Otherwise, the instruction had a name. Resolve forward refs and set it.
1601 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1602 FI = ForwardRefVals.find(NameStr);
1603 if (FI != ForwardRefVals.end()) {
1604 if (FI->second.first->getType() != Inst->getType())
1605 return P.Error(NameLoc, "instruction forward referenced with type '" +
1606 FI->second.first->getType()->getDescription() + "'");
1607 FI->second.first->replaceAllUsesWith(Inst);
1608 ForwardRefVals.erase(FI);
1611 // Set the name on the instruction.
1612 Inst->setName(NameStr);
1614 if (Inst->getNameStr() != NameStr)
1615 return P.Error(NameLoc, "multiple definition of local value named '" +
1620 /// GetBB - Get a basic block with the specified name or ID, creating a
1621 /// forward reference record if needed.
1622 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
1624 return cast_or_null<BasicBlock>(GetVal(Name, Type::LabelTy, Loc));
1627 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
1628 return cast_or_null<BasicBlock>(GetVal(ID, Type::LabelTy, Loc));
1631 /// DefineBB - Define the specified basic block, which is either named or
1632 /// unnamed. If there is an error, this returns null otherwise it returns
1633 /// the block being defined.
1634 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
1638 BB = GetBB(NumberedVals.size(), Loc);
1640 BB = GetBB(Name, Loc);
1641 if (BB == 0) return 0; // Already diagnosed error.
1643 // Move the block to the end of the function. Forward ref'd blocks are
1644 // inserted wherever they happen to be referenced.
1645 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
1647 // Remove the block from forward ref sets.
1649 ForwardRefValIDs.erase(NumberedVals.size());
1650 NumberedVals.push_back(BB);
1652 // BB forward references are already in the function symbol table.
1653 ForwardRefVals.erase(Name);
1659 //===----------------------------------------------------------------------===//
1661 //===----------------------------------------------------------------------===//
1663 /// ParseValID - Parse an abstract value that doesn't necessarily have a
1664 /// type implied. For example, if we parse "4" we don't know what integer type
1665 /// it has. The value will later be combined with its type and checked for
1667 bool LLParser::ParseValID(ValID &ID) {
1668 ID.Loc = Lex.getLoc();
1669 switch (Lex.getKind()) {
1670 default: return TokError("expected value token");
1671 case lltok::GlobalID: // @42
1672 ID.UIntVal = Lex.getUIntVal();
1673 ID.Kind = ValID::t_GlobalID;
1675 case lltok::GlobalVar: // @foo
1676 ID.StrVal = Lex.getStrVal();
1677 ID.Kind = ValID::t_GlobalName;
1679 case lltok::LocalVarID: // %42
1680 ID.UIntVal = Lex.getUIntVal();
1681 ID.Kind = ValID::t_LocalID;
1683 case lltok::LocalVar: // %foo
1684 case lltok::StringConstant: // "foo" - FIXME: REMOVE IN LLVM 3.0
1685 ID.StrVal = Lex.getStrVal();
1686 ID.Kind = ValID::t_LocalName;
1688 case lltok::Metadata: { // !{...} MDNode, !"foo" MDString
1689 ID.Kind = ValID::t_Metadata;
1691 if (Lex.getKind() == lltok::lbrace) {
1692 SmallVector<Value*, 16> Elts;
1693 if (ParseMDNodeVector(Elts) ||
1694 ParseToken(lltok::rbrace, "expected end of metadata node"))
1697 ID.MetadataVal = Context.getMDNode(Elts.data(), Elts.size());
1701 // Standalone metadata reference
1702 // !{ ..., !42, ... }
1703 if (!ParseMDNode(ID.MetadataVal))
1707 // ::= '!' STRINGCONSTANT
1708 if (ParseMDString(ID.MetadataVal)) return true;
1709 ID.Kind = ValID::t_Metadata;
1713 ID.APSIntVal = Lex.getAPSIntVal();
1714 ID.Kind = ValID::t_APSInt;
1716 case lltok::APFloat:
1717 ID.APFloatVal = Lex.getAPFloatVal();
1718 ID.Kind = ValID::t_APFloat;
1720 case lltok::kw_true:
1721 ID.ConstantVal = Context.getTrue();
1722 ID.Kind = ValID::t_Constant;
1724 case lltok::kw_false:
1725 ID.ConstantVal = Context.getFalse();
1726 ID.Kind = ValID::t_Constant;
1728 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
1729 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
1730 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
1732 case lltok::lbrace: {
1733 // ValID ::= '{' ConstVector '}'
1735 SmallVector<Constant*, 16> Elts;
1736 if (ParseGlobalValueVector(Elts) ||
1737 ParseToken(lltok::rbrace, "expected end of struct constant"))
1740 ID.ConstantVal = Context.getConstantStruct(Elts.data(), Elts.size(), false);
1741 ID.Kind = ValID::t_Constant;
1745 // ValID ::= '<' ConstVector '>' --> Vector.
1746 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
1748 bool isPackedStruct = EatIfPresent(lltok::lbrace);
1750 SmallVector<Constant*, 16> Elts;
1751 LocTy FirstEltLoc = Lex.getLoc();
1752 if (ParseGlobalValueVector(Elts) ||
1754 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
1755 ParseToken(lltok::greater, "expected end of constant"))
1758 if (isPackedStruct) {
1760 Context.getConstantStruct(Elts.data(), Elts.size(), true);
1761 ID.Kind = ValID::t_Constant;
1766 return Error(ID.Loc, "constant vector must not be empty");
1768 if (!Elts[0]->getType()->isInteger() &&
1769 !Elts[0]->getType()->isFloatingPoint())
1770 return Error(FirstEltLoc,
1771 "vector elements must have integer or floating point type");
1773 // Verify that all the vector elements have the same type.
1774 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
1775 if (Elts[i]->getType() != Elts[0]->getType())
1776 return Error(FirstEltLoc,
1777 "vector element #" + utostr(i) +
1778 " is not of type '" + Elts[0]->getType()->getDescription());
1780 ID.ConstantVal = Context.getConstantVector(Elts.data(), Elts.size());
1781 ID.Kind = ValID::t_Constant;
1784 case lltok::lsquare: { // Array Constant
1786 SmallVector<Constant*, 16> Elts;
1787 LocTy FirstEltLoc = Lex.getLoc();
1788 if (ParseGlobalValueVector(Elts) ||
1789 ParseToken(lltok::rsquare, "expected end of array constant"))
1792 // Handle empty element.
1794 // Use undef instead of an array because it's inconvenient to determine
1795 // the element type at this point, there being no elements to examine.
1796 ID.Kind = ValID::t_EmptyArray;
1800 if (!Elts[0]->getType()->isFirstClassType())
1801 return Error(FirstEltLoc, "invalid array element type: " +
1802 Elts[0]->getType()->getDescription());
1804 ArrayType *ATy = Context.getArrayType(Elts[0]->getType(), Elts.size());
1806 // Verify all elements are correct type!
1807 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
1808 if (Elts[i]->getType() != Elts[0]->getType())
1809 return Error(FirstEltLoc,
1810 "array element #" + utostr(i) +
1811 " is not of type '" +Elts[0]->getType()->getDescription());
1814 ID.ConstantVal = Context.getConstantArray(ATy, Elts.data(), Elts.size());
1815 ID.Kind = ValID::t_Constant;
1818 case lltok::kw_c: // c "foo"
1820 ID.ConstantVal = Context.getConstantArray(Lex.getStrVal(), false);
1821 if (ParseToken(lltok::StringConstant, "expected string")) return true;
1822 ID.Kind = ValID::t_Constant;
1825 case lltok::kw_asm: {
1826 // ValID ::= 'asm' SideEffect? STRINGCONSTANT ',' STRINGCONSTANT
1829 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
1830 ParseStringConstant(ID.StrVal) ||
1831 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
1832 ParseToken(lltok::StringConstant, "expected constraint string"))
1834 ID.StrVal2 = Lex.getStrVal();
1835 ID.UIntVal = HasSideEffect;
1836 ID.Kind = ValID::t_InlineAsm;
1840 case lltok::kw_trunc:
1841 case lltok::kw_zext:
1842 case lltok::kw_sext:
1843 case lltok::kw_fptrunc:
1844 case lltok::kw_fpext:
1845 case lltok::kw_bitcast:
1846 case lltok::kw_uitofp:
1847 case lltok::kw_sitofp:
1848 case lltok::kw_fptoui:
1849 case lltok::kw_fptosi:
1850 case lltok::kw_inttoptr:
1851 case lltok::kw_ptrtoint: {
1852 unsigned Opc = Lex.getUIntVal();
1853 PATypeHolder DestTy(Type::VoidTy);
1856 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
1857 ParseGlobalTypeAndValue(SrcVal) ||
1858 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
1859 ParseType(DestTy) ||
1860 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
1862 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
1863 return Error(ID.Loc, "invalid cast opcode for cast from '" +
1864 SrcVal->getType()->getDescription() + "' to '" +
1865 DestTy->getDescription() + "'");
1866 ID.ConstantVal = Context.getConstantExprCast((Instruction::CastOps)Opc,
1868 ID.Kind = ValID::t_Constant;
1871 case lltok::kw_extractvalue: {
1874 SmallVector<unsigned, 4> Indices;
1875 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
1876 ParseGlobalTypeAndValue(Val) ||
1877 ParseIndexList(Indices) ||
1878 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
1880 if (!isa<StructType>(Val->getType()) && !isa<ArrayType>(Val->getType()))
1881 return Error(ID.Loc, "extractvalue operand must be array or struct");
1882 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
1884 return Error(ID.Loc, "invalid indices for extractvalue");
1886 Context.getConstantExprExtractValue(Val, Indices.data(), Indices.size());
1887 ID.Kind = ValID::t_Constant;
1890 case lltok::kw_insertvalue: {
1892 Constant *Val0, *Val1;
1893 SmallVector<unsigned, 4> Indices;
1894 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
1895 ParseGlobalTypeAndValue(Val0) ||
1896 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
1897 ParseGlobalTypeAndValue(Val1) ||
1898 ParseIndexList(Indices) ||
1899 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
1901 if (!isa<StructType>(Val0->getType()) && !isa<ArrayType>(Val0->getType()))
1902 return Error(ID.Loc, "extractvalue operand must be array or struct");
1903 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
1905 return Error(ID.Loc, "invalid indices for insertvalue");
1906 ID.ConstantVal = Context.getConstantExprInsertValue(Val0, Val1,
1907 Indices.data(), Indices.size());
1908 ID.Kind = ValID::t_Constant;
1911 case lltok::kw_icmp:
1912 case lltok::kw_fcmp: {
1913 unsigned PredVal, Opc = Lex.getUIntVal();
1914 Constant *Val0, *Val1;
1916 if (ParseCmpPredicate(PredVal, Opc) ||
1917 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
1918 ParseGlobalTypeAndValue(Val0) ||
1919 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
1920 ParseGlobalTypeAndValue(Val1) ||
1921 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
1924 if (Val0->getType() != Val1->getType())
1925 return Error(ID.Loc, "compare operands must have the same type");
1927 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
1929 if (Opc == Instruction::FCmp) {
1930 if (!Val0->getType()->isFPOrFPVector())
1931 return Error(ID.Loc, "fcmp requires floating point operands");
1932 ID.ConstantVal = Context.getConstantExprFCmp(Pred, Val0, Val1);
1934 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
1935 if (!Val0->getType()->isIntOrIntVector() &&
1936 !isa<PointerType>(Val0->getType()))
1937 return Error(ID.Loc, "icmp requires pointer or integer operands");
1938 ID.ConstantVal = Context.getConstantExprICmp(Pred, Val0, Val1);
1940 ID.Kind = ValID::t_Constant;
1944 // Binary Operators.
1946 case lltok::kw_fadd:
1948 case lltok::kw_fsub:
1950 case lltok::kw_fmul:
1951 case lltok::kw_udiv:
1952 case lltok::kw_sdiv:
1953 case lltok::kw_fdiv:
1954 case lltok::kw_urem:
1955 case lltok::kw_srem:
1956 case lltok::kw_frem: {
1957 unsigned Opc = Lex.getUIntVal();
1958 Constant *Val0, *Val1;
1960 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
1961 ParseGlobalTypeAndValue(Val0) ||
1962 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
1963 ParseGlobalTypeAndValue(Val1) ||
1964 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
1966 if (Val0->getType() != Val1->getType())
1967 return Error(ID.Loc, "operands of constexpr must have same type");
1968 if (!Val0->getType()->isIntOrIntVector() &&
1969 !Val0->getType()->isFPOrFPVector())
1970 return Error(ID.Loc,"constexpr requires integer, fp, or vector operands");
1971 ID.ConstantVal = Context.getConstantExpr(Opc, Val0, Val1);
1972 ID.Kind = ValID::t_Constant;
1976 // Logical Operations
1978 case lltok::kw_lshr:
1979 case lltok::kw_ashr:
1982 case lltok::kw_xor: {
1983 unsigned Opc = Lex.getUIntVal();
1984 Constant *Val0, *Val1;
1986 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
1987 ParseGlobalTypeAndValue(Val0) ||
1988 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
1989 ParseGlobalTypeAndValue(Val1) ||
1990 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
1992 if (Val0->getType() != Val1->getType())
1993 return Error(ID.Loc, "operands of constexpr must have same type");
1994 if (!Val0->getType()->isIntOrIntVector())
1995 return Error(ID.Loc,
1996 "constexpr requires integer or integer vector operands");
1997 ID.ConstantVal = Context.getConstantExpr(Opc, Val0, Val1);
1998 ID.Kind = ValID::t_Constant;
2002 case lltok::kw_getelementptr:
2003 case lltok::kw_shufflevector:
2004 case lltok::kw_insertelement:
2005 case lltok::kw_extractelement:
2006 case lltok::kw_select: {
2007 unsigned Opc = Lex.getUIntVal();
2008 SmallVector<Constant*, 16> Elts;
2010 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2011 ParseGlobalValueVector(Elts) ||
2012 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2015 if (Opc == Instruction::GetElementPtr) {
2016 if (Elts.size() == 0 || !isa<PointerType>(Elts[0]->getType()))
2017 return Error(ID.Loc, "getelementptr requires pointer operand");
2019 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(),
2020 (Value**)&Elts[1], Elts.size()-1))
2021 return Error(ID.Loc, "invalid indices for getelementptr");
2022 ID.ConstantVal = Context.getConstantExprGetElementPtr(Elts[0],
2023 &Elts[1], Elts.size()-1);
2024 } else if (Opc == Instruction::Select) {
2025 if (Elts.size() != 3)
2026 return Error(ID.Loc, "expected three operands to select");
2027 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2029 return Error(ID.Loc, Reason);
2030 ID.ConstantVal = Context.getConstantExprSelect(Elts[0], Elts[1], Elts[2]);
2031 } else if (Opc == Instruction::ShuffleVector) {
2032 if (Elts.size() != 3)
2033 return Error(ID.Loc, "expected three operands to shufflevector");
2034 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2035 return Error(ID.Loc, "invalid operands to shufflevector");
2037 Context.getConstantExprShuffleVector(Elts[0], Elts[1],Elts[2]);
2038 } else if (Opc == Instruction::ExtractElement) {
2039 if (Elts.size() != 2)
2040 return Error(ID.Loc, "expected two operands to extractelement");
2041 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2042 return Error(ID.Loc, "invalid extractelement operands");
2043 ID.ConstantVal = Context.getConstantExprExtractElement(Elts[0], Elts[1]);
2045 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2046 if (Elts.size() != 3)
2047 return Error(ID.Loc, "expected three operands to insertelement");
2048 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2049 return Error(ID.Loc, "invalid insertelement operands");
2051 Context.getConstantExprInsertElement(Elts[0], Elts[1],Elts[2]);
2054 ID.Kind = ValID::t_Constant;
2057 case lltok::kw_nuw: {
2059 bool AlsoSigned = EatIfPresent(lltok::kw_nsw);
2060 if (Lex.getKind() != lltok::kw_add &&
2061 Lex.getKind() != lltok::kw_sub &&
2062 Lex.getKind() != lltok::kw_mul)
2063 return TokError("expected 'add', 'sub', or 'mul'");
2064 bool Result = LLParser::ParseValID(ID);
2066 cast<OverflowingBinaryOperator>(ID.ConstantVal)
2067 ->setHasNoUnsignedOverflow(true);
2069 cast<OverflowingBinaryOperator>(ID.ConstantVal)
2070 ->setHasNoSignedOverflow(true);
2074 case lltok::kw_nsw: {
2076 bool AlsoUnsigned = EatIfPresent(lltok::kw_nuw);
2077 if (Lex.getKind() != lltok::kw_add &&
2078 Lex.getKind() != lltok::kw_sub &&
2079 Lex.getKind() != lltok::kw_mul)
2080 return TokError("expected 'add', 'sub', or 'mul'");
2081 bool Result = LLParser::ParseValID(ID);
2083 cast<OverflowingBinaryOperator>(ID.ConstantVal)
2084 ->setHasNoSignedOverflow(true);
2086 cast<OverflowingBinaryOperator>(ID.ConstantVal)
2087 ->setHasNoUnsignedOverflow(true);
2091 case lltok::kw_exact: {
2093 if (Lex.getKind() != lltok::kw_sdiv)
2094 return TokError("expected 'sdiv'");
2095 bool Result = LLParser::ParseValID(ID);
2097 cast<SDivOperator>(ID.ConstantVal)->setIsExact(true);
2106 /// ParseGlobalValue - Parse a global value with the specified type.
2107 bool LLParser::ParseGlobalValue(const Type *Ty, Constant *&V) {
2110 return ParseValID(ID) ||
2111 ConvertGlobalValIDToValue(Ty, ID, V);
2114 /// ConvertGlobalValIDToValue - Apply a type to a ValID to get a fully resolved
2116 bool LLParser::ConvertGlobalValIDToValue(const Type *Ty, ValID &ID,
2118 if (isa<FunctionType>(Ty))
2119 return Error(ID.Loc, "functions are not values, refer to them as pointers");
2122 default: llvm_unreachable("Unknown ValID!");
2123 case ValID::t_Metadata:
2124 return Error(ID.Loc, "invalid use of metadata");
2125 case ValID::t_LocalID:
2126 case ValID::t_LocalName:
2127 return Error(ID.Loc, "invalid use of function-local name");
2128 case ValID::t_InlineAsm:
2129 return Error(ID.Loc, "inline asm can only be an operand of call/invoke");
2130 case ValID::t_GlobalName:
2131 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
2133 case ValID::t_GlobalID:
2134 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
2136 case ValID::t_APSInt:
2137 if (!isa<IntegerType>(Ty))
2138 return Error(ID.Loc, "integer constant must have integer type");
2139 ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
2140 V = Context.getConstantInt(ID.APSIntVal);
2142 case ValID::t_APFloat:
2143 if (!Ty->isFloatingPoint() ||
2144 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
2145 return Error(ID.Loc, "floating point constant invalid for type");
2147 // The lexer has no type info, so builds all float and double FP constants
2148 // as double. Fix this here. Long double does not need this.
2149 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble &&
2150 Ty == Type::FloatTy) {
2152 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
2155 V = Context.getConstantFP(ID.APFloatVal);
2157 if (V->getType() != Ty)
2158 return Error(ID.Loc, "floating point constant does not have type '" +
2159 Ty->getDescription() + "'");
2163 if (!isa<PointerType>(Ty))
2164 return Error(ID.Loc, "null must be a pointer type");
2165 V = Context.getConstantPointerNull(cast<PointerType>(Ty));
2167 case ValID::t_Undef:
2168 // FIXME: LabelTy should not be a first-class type.
2169 if ((!Ty->isFirstClassType() || Ty == Type::LabelTy) &&
2170 !isa<OpaqueType>(Ty))
2171 return Error(ID.Loc, "invalid type for undef constant");
2172 V = Context.getUndef(Ty);
2174 case ValID::t_EmptyArray:
2175 if (!isa<ArrayType>(Ty) || cast<ArrayType>(Ty)->getNumElements() != 0)
2176 return Error(ID.Loc, "invalid empty array initializer");
2177 V = Context.getUndef(Ty);
2180 // FIXME: LabelTy should not be a first-class type.
2181 if (!Ty->isFirstClassType() || Ty == Type::LabelTy)
2182 return Error(ID.Loc, "invalid type for null constant");
2183 V = Context.getNullValue(Ty);
2185 case ValID::t_Constant:
2186 if (ID.ConstantVal->getType() != Ty)
2187 return Error(ID.Loc, "constant expression type mismatch");
2193 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2194 PATypeHolder Type(Type::VoidTy);
2195 return ParseType(Type) ||
2196 ParseGlobalValue(Type, V);
2199 /// ParseGlobalValueVector
2201 /// ::= TypeAndValue (',' TypeAndValue)*
2202 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts) {
2204 if (Lex.getKind() == lltok::rbrace ||
2205 Lex.getKind() == lltok::rsquare ||
2206 Lex.getKind() == lltok::greater ||
2207 Lex.getKind() == lltok::rparen)
2211 if (ParseGlobalTypeAndValue(C)) return true;
2214 while (EatIfPresent(lltok::comma)) {
2215 if (ParseGlobalTypeAndValue(C)) return true;
2223 //===----------------------------------------------------------------------===//
2224 // Function Parsing.
2225 //===----------------------------------------------------------------------===//
2227 bool LLParser::ConvertValIDToValue(const Type *Ty, ValID &ID, Value *&V,
2228 PerFunctionState &PFS) {
2229 if (ID.Kind == ValID::t_LocalID)
2230 V = PFS.GetVal(ID.UIntVal, Ty, ID.Loc);
2231 else if (ID.Kind == ValID::t_LocalName)
2232 V = PFS.GetVal(ID.StrVal, Ty, ID.Loc);
2233 else if (ID.Kind == ValID::t_InlineAsm) {
2234 const PointerType *PTy = dyn_cast<PointerType>(Ty);
2235 const FunctionType *FTy =
2236 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
2237 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
2238 return Error(ID.Loc, "invalid type for inline asm constraint string");
2239 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal);
2241 } else if (ID.Kind == ValID::t_Metadata) {
2245 if (ConvertGlobalValIDToValue(Ty, ID, C)) return true;
2253 bool LLParser::ParseValue(const Type *Ty, Value *&V, PerFunctionState &PFS) {
2256 return ParseValID(ID) ||
2257 ConvertValIDToValue(Ty, ID, V, PFS);
2260 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState &PFS) {
2261 PATypeHolder T(Type::VoidTy);
2262 return ParseType(T) ||
2263 ParseValue(T, V, PFS);
2267 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
2268 /// Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
2269 /// OptionalAlign OptGC
2270 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
2271 // Parse the linkage.
2272 LocTy LinkageLoc = Lex.getLoc();
2275 unsigned Visibility, CC, RetAttrs;
2276 PATypeHolder RetType(Type::VoidTy);
2277 LocTy RetTypeLoc = Lex.getLoc();
2278 if (ParseOptionalLinkage(Linkage) ||
2279 ParseOptionalVisibility(Visibility) ||
2280 ParseOptionalCallingConv(CC) ||
2281 ParseOptionalAttrs(RetAttrs, 1) ||
2282 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
2285 // Verify that the linkage is ok.
2286 switch ((GlobalValue::LinkageTypes)Linkage) {
2287 case GlobalValue::ExternalLinkage:
2288 break; // always ok.
2289 case GlobalValue::DLLImportLinkage:
2290 case GlobalValue::ExternalWeakLinkage:
2292 return Error(LinkageLoc, "invalid linkage for function definition");
2294 case GlobalValue::PrivateLinkage:
2295 case GlobalValue::LinkerPrivateLinkage:
2296 case GlobalValue::InternalLinkage:
2297 case GlobalValue::AvailableExternallyLinkage:
2298 case GlobalValue::LinkOnceAnyLinkage:
2299 case GlobalValue::LinkOnceODRLinkage:
2300 case GlobalValue::WeakAnyLinkage:
2301 case GlobalValue::WeakODRLinkage:
2302 case GlobalValue::DLLExportLinkage:
2304 return Error(LinkageLoc, "invalid linkage for function declaration");
2306 case GlobalValue::AppendingLinkage:
2307 case GlobalValue::GhostLinkage:
2308 case GlobalValue::CommonLinkage:
2309 return Error(LinkageLoc, "invalid function linkage type");
2312 if (!FunctionType::isValidReturnType(RetType) ||
2313 isa<OpaqueType>(RetType))
2314 return Error(RetTypeLoc, "invalid function return type");
2316 LocTy NameLoc = Lex.getLoc();
2318 std::string FunctionName;
2319 if (Lex.getKind() == lltok::GlobalVar) {
2320 FunctionName = Lex.getStrVal();
2321 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
2322 unsigned NameID = Lex.getUIntVal();
2324 if (NameID != NumberedVals.size())
2325 return TokError("function expected to be numbered '%" +
2326 utostr(NumberedVals.size()) + "'");
2328 return TokError("expected function name");
2333 if (Lex.getKind() != lltok::lparen)
2334 return TokError("expected '(' in function argument list");
2336 std::vector<ArgInfo> ArgList;
2339 std::string Section;
2343 if (ParseArgumentList(ArgList, isVarArg, false) ||
2344 ParseOptionalAttrs(FuncAttrs, 2) ||
2345 (EatIfPresent(lltok::kw_section) &&
2346 ParseStringConstant(Section)) ||
2347 ParseOptionalAlignment(Alignment) ||
2348 (EatIfPresent(lltok::kw_gc) &&
2349 ParseStringConstant(GC)))
2352 // If the alignment was parsed as an attribute, move to the alignment field.
2353 if (FuncAttrs & Attribute::Alignment) {
2354 Alignment = Attribute::getAlignmentFromAttrs(FuncAttrs);
2355 FuncAttrs &= ~Attribute::Alignment;
2358 // Okay, if we got here, the function is syntactically valid. Convert types
2359 // and do semantic checks.
2360 std::vector<const Type*> ParamTypeList;
2361 SmallVector<AttributeWithIndex, 8> Attrs;
2362 // FIXME : In 3.0, stop accepting zext, sext and inreg as optional function
2364 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
2365 if (FuncAttrs & ObsoleteFuncAttrs) {
2366 RetAttrs |= FuncAttrs & ObsoleteFuncAttrs;
2367 FuncAttrs &= ~ObsoleteFuncAttrs;
2370 if (RetAttrs != Attribute::None)
2371 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
2373 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2374 ParamTypeList.push_back(ArgList[i].Type);
2375 if (ArgList[i].Attrs != Attribute::None)
2376 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
2379 if (FuncAttrs != Attribute::None)
2380 Attrs.push_back(AttributeWithIndex::get(~0, FuncAttrs));
2382 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
2384 if (PAL.paramHasAttr(1, Attribute::StructRet) &&
2385 RetType != Type::VoidTy)
2386 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
2388 const FunctionType *FT =
2389 Context.getFunctionType(RetType, ParamTypeList, isVarArg);
2390 const PointerType *PFT = Context.getPointerTypeUnqual(FT);
2393 if (!FunctionName.empty()) {
2394 // If this was a definition of a forward reference, remove the definition
2395 // from the forward reference table and fill in the forward ref.
2396 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
2397 ForwardRefVals.find(FunctionName);
2398 if (FRVI != ForwardRefVals.end()) {
2399 Fn = M->getFunction(FunctionName);
2400 ForwardRefVals.erase(FRVI);
2401 } else if ((Fn = M->getFunction(FunctionName))) {
2402 // If this function already exists in the symbol table, then it is
2403 // multiply defined. We accept a few cases for old backwards compat.
2404 // FIXME: Remove this stuff for LLVM 3.0.
2405 if (Fn->getType() != PFT || Fn->getAttributes() != PAL ||
2406 (!Fn->isDeclaration() && isDefine)) {
2407 // If the redefinition has different type or different attributes,
2408 // reject it. If both have bodies, reject it.
2409 return Error(NameLoc, "invalid redefinition of function '" +
2410 FunctionName + "'");
2411 } else if (Fn->isDeclaration()) {
2412 // Make sure to strip off any argument names so we can't get conflicts.
2413 for (Function::arg_iterator AI = Fn->arg_begin(), AE = Fn->arg_end();
2419 } else if (FunctionName.empty()) {
2420 // If this is a definition of a forward referenced function, make sure the
2422 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
2423 = ForwardRefValIDs.find(NumberedVals.size());
2424 if (I != ForwardRefValIDs.end()) {
2425 Fn = cast<Function>(I->second.first);
2426 if (Fn->getType() != PFT)
2427 return Error(NameLoc, "type of definition and forward reference of '@" +
2428 utostr(NumberedVals.size()) +"' disagree");
2429 ForwardRefValIDs.erase(I);
2434 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
2435 else // Move the forward-reference to the correct spot in the module.
2436 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
2438 if (FunctionName.empty())
2439 NumberedVals.push_back(Fn);
2441 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
2442 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
2443 Fn->setCallingConv(CC);
2444 Fn->setAttributes(PAL);
2445 Fn->setAlignment(Alignment);
2446 Fn->setSection(Section);
2447 if (!GC.empty()) Fn->setGC(GC.c_str());
2449 // Add all of the arguments we parsed to the function.
2450 Function::arg_iterator ArgIt = Fn->arg_begin();
2451 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
2452 // If the argument has a name, insert it into the argument symbol table.
2453 if (ArgList[i].Name.empty()) continue;
2455 // Set the name, if it conflicted, it will be auto-renamed.
2456 ArgIt->setName(ArgList[i].Name);
2458 if (ArgIt->getNameStr() != ArgList[i].Name)
2459 return Error(ArgList[i].Loc, "redefinition of argument '%" +
2460 ArgList[i].Name + "'");
2467 /// ParseFunctionBody
2468 /// ::= '{' BasicBlock+ '}'
2469 /// ::= 'begin' BasicBlock+ 'end' // FIXME: remove in LLVM 3.0
2471 bool LLParser::ParseFunctionBody(Function &Fn) {
2472 if (Lex.getKind() != lltok::lbrace && Lex.getKind() != lltok::kw_begin)
2473 return TokError("expected '{' in function body");
2474 Lex.Lex(); // eat the {.
2476 PerFunctionState PFS(*this, Fn);
2478 while (Lex.getKind() != lltok::rbrace && Lex.getKind() != lltok::kw_end)
2479 if (ParseBasicBlock(PFS)) return true;
2484 // Verify function is ok.
2485 return PFS.VerifyFunctionComplete();
2489 /// ::= LabelStr? Instruction*
2490 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
2491 // If this basic block starts out with a name, remember it.
2493 LocTy NameLoc = Lex.getLoc();
2494 if (Lex.getKind() == lltok::LabelStr) {
2495 Name = Lex.getStrVal();
2499 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
2500 if (BB == 0) return true;
2502 std::string NameStr;
2504 // Parse the instructions in this block until we get a terminator.
2507 // This instruction may have three possibilities for a name: a) none
2508 // specified, b) name specified "%foo =", c) number specified: "%4 =".
2509 LocTy NameLoc = Lex.getLoc();
2513 if (Lex.getKind() == lltok::LocalVarID) {
2514 NameID = Lex.getUIntVal();
2516 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
2518 } else if (Lex.getKind() == lltok::LocalVar ||
2519 // FIXME: REMOVE IN LLVM 3.0
2520 Lex.getKind() == lltok::StringConstant) {
2521 NameStr = Lex.getStrVal();
2523 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
2527 if (ParseInstruction(Inst, BB, PFS)) return true;
2529 BB->getInstList().push_back(Inst);
2531 // Set the name on the instruction.
2532 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
2533 } while (!isa<TerminatorInst>(Inst));
2538 //===----------------------------------------------------------------------===//
2539 // Instruction Parsing.
2540 //===----------------------------------------------------------------------===//
2542 /// ParseInstruction - Parse one of the many different instructions.
2544 bool LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
2545 PerFunctionState &PFS) {
2546 lltok::Kind Token = Lex.getKind();
2547 if (Token == lltok::Eof)
2548 return TokError("found end of file when expecting more instructions");
2549 LocTy Loc = Lex.getLoc();
2550 unsigned KeywordVal = Lex.getUIntVal();
2551 Lex.Lex(); // Eat the keyword.
2554 default: return Error(Loc, "expected instruction opcode");
2555 // Terminator Instructions.
2556 case lltok::kw_unwind: Inst = new UnwindInst(); return false;
2557 case lltok::kw_unreachable: Inst = new UnreachableInst(); return false;
2558 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
2559 case lltok::kw_br: return ParseBr(Inst, PFS);
2560 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
2561 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
2562 // Binary Operators.
2566 // API compatibility: Accept either integer or floating-point types.
2567 return ParseArithmetic(Inst, PFS, KeywordVal, 0);
2568 case lltok::kw_fadd:
2569 case lltok::kw_fsub:
2570 case lltok::kw_fmul: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
2572 case lltok::kw_udiv:
2573 case lltok::kw_sdiv:
2574 case lltok::kw_urem:
2575 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
2576 case lltok::kw_fdiv:
2577 case lltok::kw_frem: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
2579 case lltok::kw_lshr:
2580 case lltok::kw_ashr:
2583 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
2584 case lltok::kw_icmp:
2585 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
2587 case lltok::kw_trunc:
2588 case lltok::kw_zext:
2589 case lltok::kw_sext:
2590 case lltok::kw_fptrunc:
2591 case lltok::kw_fpext:
2592 case lltok::kw_bitcast:
2593 case lltok::kw_uitofp:
2594 case lltok::kw_sitofp:
2595 case lltok::kw_fptoui:
2596 case lltok::kw_fptosi:
2597 case lltok::kw_inttoptr:
2598 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
2600 case lltok::kw_select: return ParseSelect(Inst, PFS);
2601 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
2602 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
2603 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
2604 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
2605 case lltok::kw_phi: return ParsePHI(Inst, PFS);
2606 case lltok::kw_call: return ParseCall(Inst, PFS, false);
2607 case lltok::kw_tail: return ParseCall(Inst, PFS, true);
2609 case lltok::kw_alloca:
2610 case lltok::kw_malloc: return ParseAlloc(Inst, PFS, KeywordVal);
2611 case lltok::kw_free: return ParseFree(Inst, PFS);
2612 case lltok::kw_load: return ParseLoad(Inst, PFS, false);
2613 case lltok::kw_store: return ParseStore(Inst, PFS, false);
2614 case lltok::kw_volatile:
2615 if (EatIfPresent(lltok::kw_load))
2616 return ParseLoad(Inst, PFS, true);
2617 else if (EatIfPresent(lltok::kw_store))
2618 return ParseStore(Inst, PFS, true);
2620 return TokError("expected 'load' or 'store'");
2621 case lltok::kw_nuw: {
2622 bool AlsoSigned = EatIfPresent(lltok::kw_nsw);
2623 if (Lex.getKind() == lltok::kw_add ||
2624 Lex.getKind() == lltok::kw_sub ||
2625 Lex.getKind() == lltok::kw_mul) {
2627 KeywordVal = Lex.getUIntVal();
2628 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 0);
2630 cast<OverflowingBinaryOperator>(Inst)->setHasNoUnsignedOverflow(true);
2632 cast<OverflowingBinaryOperator>(Inst)->setHasNoSignedOverflow(true);
2636 return TokError("expected 'add', 'sub', or 'mul'");
2638 case lltok::kw_nsw: {
2639 bool AlsoUnsigned = EatIfPresent(lltok::kw_nuw);
2640 if (Lex.getKind() == lltok::kw_add ||
2641 Lex.getKind() == lltok::kw_sub ||
2642 Lex.getKind() == lltok::kw_mul) {
2644 KeywordVal = Lex.getUIntVal();
2645 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 1);
2647 cast<OverflowingBinaryOperator>(Inst)->setHasNoSignedOverflow(true);
2649 cast<OverflowingBinaryOperator>(Inst)->setHasNoUnsignedOverflow(true);
2653 return TokError("expected 'add', 'sub', or 'mul'");
2655 case lltok::kw_exact:
2656 if (Lex.getKind() == lltok::kw_sdiv) {
2658 KeywordVal = Lex.getUIntVal();
2659 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 1);
2661 cast<SDivOperator>(Inst)->setIsExact(true);
2664 return TokError("expected 'udiv'");
2665 case lltok::kw_getresult: return ParseGetResult(Inst, PFS);
2666 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
2667 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
2668 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
2672 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
2673 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
2674 if (Opc == Instruction::FCmp) {
2675 switch (Lex.getKind()) {
2676 default: TokError("expected fcmp predicate (e.g. 'oeq')");
2677 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
2678 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
2679 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
2680 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
2681 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
2682 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
2683 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
2684 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
2685 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
2686 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
2687 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
2688 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
2689 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
2690 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
2691 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
2692 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
2695 switch (Lex.getKind()) {
2696 default: TokError("expected icmp predicate (e.g. 'eq')");
2697 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
2698 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
2699 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
2700 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
2701 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
2702 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
2703 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
2704 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
2705 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
2706 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
2713 //===----------------------------------------------------------------------===//
2714 // Terminator Instructions.
2715 //===----------------------------------------------------------------------===//
2717 /// ParseRet - Parse a return instruction.
2719 /// ::= 'ret' TypeAndValue
2720 /// ::= 'ret' TypeAndValue (',' TypeAndValue)+ [[obsolete: LLVM 3.0]]
2721 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
2722 PerFunctionState &PFS) {
2723 PATypeHolder Ty(Type::VoidTy);
2724 if (ParseType(Ty, true /*void allowed*/)) return true;
2726 if (Ty == Type::VoidTy) {
2727 Inst = ReturnInst::Create();
2732 if (ParseValue(Ty, RV, PFS)) return true;
2734 // The normal case is one return value.
2735 if (Lex.getKind() == lltok::comma) {
2736 // FIXME: LLVM 3.0 remove MRV support for 'ret i32 1, i32 2', requiring use
2737 // of 'ret {i32,i32} {i32 1, i32 2}'
2738 SmallVector<Value*, 8> RVs;
2741 while (EatIfPresent(lltok::comma)) {
2742 if (ParseTypeAndValue(RV, PFS)) return true;
2746 RV = Context.getUndef(PFS.getFunction().getReturnType());
2747 for (unsigned i = 0, e = RVs.size(); i != e; ++i) {
2748 Instruction *I = InsertValueInst::Create(RV, RVs[i], i, "mrv");
2749 BB->getInstList().push_back(I);
2753 Inst = ReturnInst::Create(RV);
2759 /// ::= 'br' TypeAndValue
2760 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
2761 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
2763 Value *Op0, *Op1, *Op2;
2764 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
2766 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
2767 Inst = BranchInst::Create(BB);
2771 if (Op0->getType() != Type::Int1Ty)
2772 return Error(Loc, "branch condition must have 'i1' type");
2774 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
2775 ParseTypeAndValue(Op1, Loc, PFS) ||
2776 ParseToken(lltok::comma, "expected ',' after true destination") ||
2777 ParseTypeAndValue(Op2, Loc2, PFS))
2780 if (!isa<BasicBlock>(Op1))
2781 return Error(Loc, "true destination of branch must be a basic block");
2782 if (!isa<BasicBlock>(Op2))
2783 return Error(Loc2, "true destination of branch must be a basic block");
2785 Inst = BranchInst::Create(cast<BasicBlock>(Op1), cast<BasicBlock>(Op2), Op0);
2791 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
2793 /// ::= (TypeAndValue ',' TypeAndValue)*
2794 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
2795 LocTy CondLoc, BBLoc;
2796 Value *Cond, *DefaultBB;
2797 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
2798 ParseToken(lltok::comma, "expected ',' after switch condition") ||
2799 ParseTypeAndValue(DefaultBB, BBLoc, PFS) ||
2800 ParseToken(lltok::lsquare, "expected '[' with switch table"))
2803 if (!isa<IntegerType>(Cond->getType()))
2804 return Error(CondLoc, "switch condition must have integer type");
2805 if (!isa<BasicBlock>(DefaultBB))
2806 return Error(BBLoc, "default destination must be a basic block");
2808 // Parse the jump table pairs.
2809 SmallPtrSet<Value*, 32> SeenCases;
2810 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
2811 while (Lex.getKind() != lltok::rsquare) {
2812 Value *Constant, *DestBB;
2814 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
2815 ParseToken(lltok::comma, "expected ',' after case value") ||
2816 ParseTypeAndValue(DestBB, BBLoc, PFS))
2819 if (!SeenCases.insert(Constant))
2820 return Error(CondLoc, "duplicate case value in switch");
2821 if (!isa<ConstantInt>(Constant))
2822 return Error(CondLoc, "case value is not a constant integer");
2823 if (!isa<BasicBlock>(DestBB))
2824 return Error(BBLoc, "case destination is not a basic block");
2826 Table.push_back(std::make_pair(cast<ConstantInt>(Constant),
2827 cast<BasicBlock>(DestBB)));
2830 Lex.Lex(); // Eat the ']'.
2832 SwitchInst *SI = SwitchInst::Create(Cond, cast<BasicBlock>(DefaultBB),
2834 for (unsigned i = 0, e = Table.size(); i != e; ++i)
2835 SI->addCase(Table[i].first, Table[i].second);
2841 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
2842 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
2843 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
2844 LocTy CallLoc = Lex.getLoc();
2845 unsigned CC, RetAttrs, FnAttrs;
2846 PATypeHolder RetType(Type::VoidTy);
2849 SmallVector<ParamInfo, 16> ArgList;
2851 Value *NormalBB, *UnwindBB;
2852 if (ParseOptionalCallingConv(CC) ||
2853 ParseOptionalAttrs(RetAttrs, 1) ||
2854 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
2855 ParseValID(CalleeID) ||
2856 ParseParameterList(ArgList, PFS) ||
2857 ParseOptionalAttrs(FnAttrs, 2) ||
2858 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
2859 ParseTypeAndValue(NormalBB, PFS) ||
2860 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
2861 ParseTypeAndValue(UnwindBB, PFS))
2864 if (!isa<BasicBlock>(NormalBB))
2865 return Error(CallLoc, "normal destination is not a basic block");
2866 if (!isa<BasicBlock>(UnwindBB))
2867 return Error(CallLoc, "unwind destination is not a basic block");
2869 // If RetType is a non-function pointer type, then this is the short syntax
2870 // for the call, which means that RetType is just the return type. Infer the
2871 // rest of the function argument types from the arguments that are present.
2872 const PointerType *PFTy = 0;
2873 const FunctionType *Ty = 0;
2874 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
2875 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
2876 // Pull out the types of all of the arguments...
2877 std::vector<const Type*> ParamTypes;
2878 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
2879 ParamTypes.push_back(ArgList[i].V->getType());
2881 if (!FunctionType::isValidReturnType(RetType))
2882 return Error(RetTypeLoc, "Invalid result type for LLVM function");
2884 Ty = Context.getFunctionType(RetType, ParamTypes, false);
2885 PFTy = Context.getPointerTypeUnqual(Ty);
2888 // Look up the callee.
2890 if (ConvertValIDToValue(PFTy, CalleeID, Callee, PFS)) return true;
2892 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
2893 // function attributes.
2894 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
2895 if (FnAttrs & ObsoleteFuncAttrs) {
2896 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
2897 FnAttrs &= ~ObsoleteFuncAttrs;
2900 // Set up the Attributes for the function.
2901 SmallVector<AttributeWithIndex, 8> Attrs;
2902 if (RetAttrs != Attribute::None)
2903 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
2905 SmallVector<Value*, 8> Args;
2907 // Loop through FunctionType's arguments and ensure they are specified
2908 // correctly. Also, gather any parameter attributes.
2909 FunctionType::param_iterator I = Ty->param_begin();
2910 FunctionType::param_iterator E = Ty->param_end();
2911 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2912 const Type *ExpectedTy = 0;
2915 } else if (!Ty->isVarArg()) {
2916 return Error(ArgList[i].Loc, "too many arguments specified");
2919 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
2920 return Error(ArgList[i].Loc, "argument is not of expected type '" +
2921 ExpectedTy->getDescription() + "'");
2922 Args.push_back(ArgList[i].V);
2923 if (ArgList[i].Attrs != Attribute::None)
2924 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
2928 return Error(CallLoc, "not enough parameters specified for call");
2930 if (FnAttrs != Attribute::None)
2931 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
2933 // Finish off the Attributes and check them
2934 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
2936 InvokeInst *II = InvokeInst::Create(Callee, cast<BasicBlock>(NormalBB),
2937 cast<BasicBlock>(UnwindBB),
2938 Args.begin(), Args.end());
2939 II->setCallingConv(CC);
2940 II->setAttributes(PAL);
2947 //===----------------------------------------------------------------------===//
2948 // Binary Operators.
2949 //===----------------------------------------------------------------------===//
2952 /// ::= ArithmeticOps TypeAndValue ',' Value
2954 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
2955 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
2956 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
2957 unsigned Opc, unsigned OperandType) {
2958 LocTy Loc; Value *LHS, *RHS;
2959 if (ParseTypeAndValue(LHS, Loc, PFS) ||
2960 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
2961 ParseValue(LHS->getType(), RHS, PFS))
2965 switch (OperandType) {
2966 default: llvm_unreachable("Unknown operand type!");
2967 case 0: // int or FP.
2968 Valid = LHS->getType()->isIntOrIntVector() ||
2969 LHS->getType()->isFPOrFPVector();
2971 case 1: Valid = LHS->getType()->isIntOrIntVector(); break;
2972 case 2: Valid = LHS->getType()->isFPOrFPVector(); break;
2976 return Error(Loc, "invalid operand type for instruction");
2978 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
2983 /// ::= ArithmeticOps TypeAndValue ',' Value {
2984 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
2986 LocTy Loc; Value *LHS, *RHS;
2987 if (ParseTypeAndValue(LHS, Loc, PFS) ||
2988 ParseToken(lltok::comma, "expected ',' in logical operation") ||
2989 ParseValue(LHS->getType(), RHS, PFS))
2992 if (!LHS->getType()->isIntOrIntVector())
2993 return Error(Loc,"instruction requires integer or integer vector operands");
2995 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3001 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3002 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3003 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3005 // Parse the integer/fp comparison predicate.
3009 if (ParseCmpPredicate(Pred, Opc) ||
3010 ParseTypeAndValue(LHS, Loc, PFS) ||
3011 ParseToken(lltok::comma, "expected ',' after compare value") ||
3012 ParseValue(LHS->getType(), RHS, PFS))
3015 if (Opc == Instruction::FCmp) {
3016 if (!LHS->getType()->isFPOrFPVector())
3017 return Error(Loc, "fcmp requires floating point operands");
3018 Inst = new FCmpInst(Context, CmpInst::Predicate(Pred), LHS, RHS);
3020 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
3021 if (!LHS->getType()->isIntOrIntVector() &&
3022 !isa<PointerType>(LHS->getType()))
3023 return Error(Loc, "icmp requires integer operands");
3024 Inst = new ICmpInst(Context, CmpInst::Predicate(Pred), LHS, RHS);
3029 //===----------------------------------------------------------------------===//
3030 // Other Instructions.
3031 //===----------------------------------------------------------------------===//
3035 /// ::= CastOpc TypeAndValue 'to' Type
3036 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
3038 LocTy Loc; Value *Op;
3039 PATypeHolder DestTy(Type::VoidTy);
3040 if (ParseTypeAndValue(Op, Loc, PFS) ||
3041 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
3045 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
3046 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
3047 return Error(Loc, "invalid cast opcode for cast from '" +
3048 Op->getType()->getDescription() + "' to '" +
3049 DestTy->getDescription() + "'");
3051 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
3056 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3057 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
3059 Value *Op0, *Op1, *Op2;
3060 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3061 ParseToken(lltok::comma, "expected ',' after select condition") ||
3062 ParseTypeAndValue(Op1, PFS) ||
3063 ParseToken(lltok::comma, "expected ',' after select value") ||
3064 ParseTypeAndValue(Op2, PFS))
3067 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
3068 return Error(Loc, Reason);
3070 Inst = SelectInst::Create(Op0, Op1, Op2);
3075 /// ::= 'va_arg' TypeAndValue ',' Type
3076 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
3078 PATypeHolder EltTy(Type::VoidTy);
3080 if (ParseTypeAndValue(Op, PFS) ||
3081 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
3082 ParseType(EltTy, TypeLoc))
3085 if (!EltTy->isFirstClassType())
3086 return Error(TypeLoc, "va_arg requires operand with first class type");
3088 Inst = new VAArgInst(Op, EltTy);
3092 /// ParseExtractElement
3093 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
3094 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
3097 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3098 ParseToken(lltok::comma, "expected ',' after extract value") ||
3099 ParseTypeAndValue(Op1, PFS))
3102 if (!ExtractElementInst::isValidOperands(Op0, Op1))
3103 return Error(Loc, "invalid extractelement operands");
3105 Inst = new ExtractElementInst(Op0, Op1);
3109 /// ParseInsertElement
3110 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3111 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
3113 Value *Op0, *Op1, *Op2;
3114 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3115 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3116 ParseTypeAndValue(Op1, PFS) ||
3117 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3118 ParseTypeAndValue(Op2, PFS))
3121 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
3122 return Error(Loc, "invalid insertelement operands");
3124 Inst = InsertElementInst::Create(Op0, Op1, Op2);
3128 /// ParseShuffleVector
3129 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3130 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
3132 Value *Op0, *Op1, *Op2;
3133 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3134 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
3135 ParseTypeAndValue(Op1, PFS) ||
3136 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
3137 ParseTypeAndValue(Op2, PFS))
3140 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
3141 return Error(Loc, "invalid extractelement operands");
3143 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
3148 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Valueß ']')*
3149 bool LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
3150 PATypeHolder Ty(Type::VoidTy);
3152 LocTy TypeLoc = Lex.getLoc();
3154 if (ParseType(Ty) ||
3155 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3156 ParseValue(Ty, Op0, PFS) ||
3157 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3158 ParseValue(Type::LabelTy, Op1, PFS) ||
3159 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3162 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
3164 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
3166 if (!EatIfPresent(lltok::comma))
3169 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3170 ParseValue(Ty, Op0, PFS) ||
3171 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3172 ParseValue(Type::LabelTy, Op1, PFS) ||
3173 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3177 if (!Ty->isFirstClassType())
3178 return Error(TypeLoc, "phi node must have first class type");
3180 PHINode *PN = PHINode::Create(Ty);
3181 PN->reserveOperandSpace(PHIVals.size());
3182 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
3183 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
3189 /// ::= 'tail'? 'call' OptionalCallingConv OptionalAttrs Type Value
3190 /// ParameterList OptionalAttrs
3191 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
3193 unsigned CC, RetAttrs, FnAttrs;
3194 PATypeHolder RetType(Type::VoidTy);
3197 SmallVector<ParamInfo, 16> ArgList;
3198 LocTy CallLoc = Lex.getLoc();
3200 if ((isTail && ParseToken(lltok::kw_call, "expected 'tail call'")) ||
3201 ParseOptionalCallingConv(CC) ||
3202 ParseOptionalAttrs(RetAttrs, 1) ||
3203 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3204 ParseValID(CalleeID) ||
3205 ParseParameterList(ArgList, PFS) ||
3206 ParseOptionalAttrs(FnAttrs, 2))
3209 // If RetType is a non-function pointer type, then this is the short syntax
3210 // for the call, which means that RetType is just the return type. Infer the
3211 // rest of the function argument types from the arguments that are present.
3212 const PointerType *PFTy = 0;
3213 const FunctionType *Ty = 0;
3214 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3215 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3216 // Pull out the types of all of the arguments...
3217 std::vector<const Type*> ParamTypes;
3218 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3219 ParamTypes.push_back(ArgList[i].V->getType());
3221 if (!FunctionType::isValidReturnType(RetType))
3222 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3224 Ty = Context.getFunctionType(RetType, ParamTypes, false);
3225 PFTy = Context.getPointerTypeUnqual(Ty);
3228 // Look up the callee.
3230 if (ConvertValIDToValue(PFTy, CalleeID, Callee, PFS)) return true;
3232 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
3233 // function attributes.
3234 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
3235 if (FnAttrs & ObsoleteFuncAttrs) {
3236 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
3237 FnAttrs &= ~ObsoleteFuncAttrs;
3240 // Set up the Attributes for the function.
3241 SmallVector<AttributeWithIndex, 8> Attrs;
3242 if (RetAttrs != Attribute::None)
3243 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3245 SmallVector<Value*, 8> Args;
3247 // Loop through FunctionType's arguments and ensure they are specified
3248 // correctly. Also, gather any parameter attributes.
3249 FunctionType::param_iterator I = Ty->param_begin();
3250 FunctionType::param_iterator E = Ty->param_end();
3251 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3252 const Type *ExpectedTy = 0;
3255 } else if (!Ty->isVarArg()) {
3256 return Error(ArgList[i].Loc, "too many arguments specified");
3259 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3260 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3261 ExpectedTy->getDescription() + "'");
3262 Args.push_back(ArgList[i].V);
3263 if (ArgList[i].Attrs != Attribute::None)
3264 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3268 return Error(CallLoc, "not enough parameters specified for call");
3270 if (FnAttrs != Attribute::None)
3271 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3273 // Finish off the Attributes and check them
3274 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3276 CallInst *CI = CallInst::Create(Callee, Args.begin(), Args.end());
3277 CI->setTailCall(isTail);
3278 CI->setCallingConv(CC);
3279 CI->setAttributes(PAL);
3284 //===----------------------------------------------------------------------===//
3285 // Memory Instructions.
3286 //===----------------------------------------------------------------------===//
3289 /// ::= 'malloc' Type (',' TypeAndValue)? (',' OptionalAlignment)?
3290 /// ::= 'alloca' Type (',' TypeAndValue)? (',' OptionalAlignment)?
3291 bool LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS,
3293 PATypeHolder Ty(Type::VoidTy);
3296 unsigned Alignment = 0;
3297 if (ParseType(Ty)) return true;
3299 if (EatIfPresent(lltok::comma)) {
3300 if (Lex.getKind() == lltok::kw_align) {
3301 if (ParseOptionalAlignment(Alignment)) return true;
3302 } else if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
3303 ParseOptionalCommaAlignment(Alignment)) {
3308 if (Size && Size->getType() != Type::Int32Ty)
3309 return Error(SizeLoc, "element count must be i32");
3311 if (Opc == Instruction::Malloc)
3312 Inst = new MallocInst(Ty, Size, Alignment);
3314 Inst = new AllocaInst(Ty, Size, Alignment);
3319 /// ::= 'free' TypeAndValue
3320 bool LLParser::ParseFree(Instruction *&Inst, PerFunctionState &PFS) {
3321 Value *Val; LocTy Loc;
3322 if (ParseTypeAndValue(Val, Loc, PFS)) return true;
3323 if (!isa<PointerType>(Val->getType()))
3324 return Error(Loc, "operand to free must be a pointer");
3325 Inst = new FreeInst(Val);
3330 /// ::= 'volatile'? 'load' TypeAndValue (',' 'align' i32)?
3331 bool LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS,
3333 Value *Val; LocTy Loc;
3335 if (ParseTypeAndValue(Val, Loc, PFS) ||
3336 ParseOptionalCommaAlignment(Alignment))
3339 if (!isa<PointerType>(Val->getType()) ||
3340 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
3341 return Error(Loc, "load operand must be a pointer to a first class type");
3343 Inst = new LoadInst(Val, "", isVolatile, Alignment);
3348 /// ::= 'volatile'? 'store' TypeAndValue ',' TypeAndValue (',' 'align' i32)?
3349 bool LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS,
3351 Value *Val, *Ptr; LocTy Loc, PtrLoc;
3353 if (ParseTypeAndValue(Val, Loc, PFS) ||
3354 ParseToken(lltok::comma, "expected ',' after store operand") ||
3355 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
3356 ParseOptionalCommaAlignment(Alignment))
3359 if (!isa<PointerType>(Ptr->getType()))
3360 return Error(PtrLoc, "store operand must be a pointer");
3361 if (!Val->getType()->isFirstClassType())
3362 return Error(Loc, "store operand must be a first class value");
3363 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
3364 return Error(Loc, "stored value and pointer type do not match");
3366 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment);
3371 /// ::= 'getresult' TypeAndValue ',' i32
3372 /// FIXME: Remove support for getresult in LLVM 3.0
3373 bool LLParser::ParseGetResult(Instruction *&Inst, PerFunctionState &PFS) {
3374 Value *Val; LocTy ValLoc, EltLoc;
3376 if (ParseTypeAndValue(Val, ValLoc, PFS) ||
3377 ParseToken(lltok::comma, "expected ',' after getresult operand") ||
3378 ParseUInt32(Element, EltLoc))
3381 if (!isa<StructType>(Val->getType()) && !isa<ArrayType>(Val->getType()))
3382 return Error(ValLoc, "getresult inst requires an aggregate operand");
3383 if (!ExtractValueInst::getIndexedType(Val->getType(), Element))
3384 return Error(EltLoc, "invalid getresult index for value");
3385 Inst = ExtractValueInst::Create(Val, Element);
3389 /// ParseGetElementPtr
3390 /// ::= 'getelementptr' TypeAndValue (',' TypeAndValue)*
3391 bool LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
3392 Value *Ptr, *Val; LocTy Loc, EltLoc;
3393 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
3395 if (!isa<PointerType>(Ptr->getType()))
3396 return Error(Loc, "base of getelementptr must be a pointer");
3398 SmallVector<Value*, 16> Indices;
3399 while (EatIfPresent(lltok::comma)) {
3400 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
3401 if (!isa<IntegerType>(Val->getType()))
3402 return Error(EltLoc, "getelementptr index must be an integer");
3403 Indices.push_back(Val);
3406 if (!GetElementPtrInst::getIndexedType(Ptr->getType(),
3407 Indices.begin(), Indices.end()))
3408 return Error(Loc, "invalid getelementptr indices");
3409 Inst = GetElementPtrInst::Create(Ptr, Indices.begin(), Indices.end());
3413 /// ParseExtractValue
3414 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
3415 bool LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
3416 Value *Val; LocTy Loc;
3417 SmallVector<unsigned, 4> Indices;
3418 if (ParseTypeAndValue(Val, Loc, PFS) ||
3419 ParseIndexList(Indices))
3422 if (!isa<StructType>(Val->getType()) && !isa<ArrayType>(Val->getType()))
3423 return Error(Loc, "extractvalue operand must be array or struct");
3425 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
3427 return Error(Loc, "invalid indices for extractvalue");
3428 Inst = ExtractValueInst::Create(Val, Indices.begin(), Indices.end());
3432 /// ParseInsertValue
3433 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
3434 bool LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
3435 Value *Val0, *Val1; LocTy Loc0, Loc1;
3436 SmallVector<unsigned, 4> Indices;
3437 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
3438 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
3439 ParseTypeAndValue(Val1, Loc1, PFS) ||
3440 ParseIndexList(Indices))
3443 if (!isa<StructType>(Val0->getType()) && !isa<ArrayType>(Val0->getType()))
3444 return Error(Loc0, "extractvalue operand must be array or struct");
3446 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
3448 return Error(Loc0, "invalid indices for insertvalue");
3449 Inst = InsertValueInst::Create(Val0, Val1, Indices.begin(), Indices.end());
3453 //===----------------------------------------------------------------------===//
3454 // Embedded metadata.
3455 //===----------------------------------------------------------------------===//
3457 /// ParseMDNodeVector
3458 /// ::= Element (',' Element)*
3460 /// ::= 'null' | TypeAndValue
3461 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts) {
3462 assert(Lex.getKind() == lltok::lbrace);
3466 if (Lex.getKind() == lltok::kw_null) {
3470 PATypeHolder Ty(Type::VoidTy);
3471 if (ParseType(Ty)) return true;
3472 if (Lex.getKind() == lltok::Metadata) {
3474 MetadataBase *Node = 0;
3475 if (!ParseMDNode(Node))
3478 MetadataBase *MDS = 0;
3479 if (ParseMDString(MDS)) return true;
3484 if (ParseGlobalValue(Ty, C)) return true;
3489 } while (EatIfPresent(lltok::comma));