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/MDNode.h"
22 #include "llvm/Module.h"
23 #include "llvm/ValueSymbolTable.h"
24 #include "llvm/ADT/SmallPtrSet.h"
25 #include "llvm/ADT/StringExtras.h"
26 #include "llvm/Support/raw_ostream.h"
30 /// ValID - Represents a reference of a definition of some sort with no type.
31 /// There are several cases where we have to parse the value but where the
32 /// type can depend on later context. This may either be a numeric reference
33 /// or a symbolic (%var) reference. This is just a discriminated union.
36 t_LocalID, t_GlobalID, // ID in UIntVal.
37 t_LocalName, t_GlobalName, // Name in StrVal.
38 t_APSInt, t_APFloat, // Value in APSIntVal/APFloatVal.
39 t_Null, t_Undef, t_Zero, // No value.
40 t_EmptyArray, // No value: []
41 t_Constant, // Value in ConstantVal.
42 t_InlineAsm // Value in StrVal/StrVal2/UIntVal.
47 std::string StrVal, StrVal2;
50 Constant *ConstantVal;
51 ValID() : APFloatVal(0.0) {}
55 /// Run: module ::= toplevelentity*
56 bool LLParser::Run() {
60 return ParseTopLevelEntities() ||
61 ValidateEndOfModule();
64 /// ValidateEndOfModule - Do final validity and sanity checks at the end of the
66 bool LLParser::ValidateEndOfModule() {
67 if (!ForwardRefTypes.empty())
68 return Error(ForwardRefTypes.begin()->second.second,
69 "use of undefined type named '" +
70 ForwardRefTypes.begin()->first + "'");
71 if (!ForwardRefTypeIDs.empty())
72 return Error(ForwardRefTypeIDs.begin()->second.second,
73 "use of undefined type '%" +
74 utostr(ForwardRefTypeIDs.begin()->first) + "'");
76 if (!ForwardRefVals.empty())
77 return Error(ForwardRefVals.begin()->second.second,
78 "use of undefined value '@" + ForwardRefVals.begin()->first +
81 if (!ForwardRefValIDs.empty())
82 return Error(ForwardRefValIDs.begin()->second.second,
83 "use of undefined value '@" +
84 utostr(ForwardRefValIDs.begin()->first) + "'");
86 // Look for intrinsic functions and CallInst that need to be upgraded
87 for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; )
88 UpgradeCallsToIntrinsic(FI++); // must be post-increment, as we remove
93 //===----------------------------------------------------------------------===//
95 //===----------------------------------------------------------------------===//
97 bool LLParser::ParseTopLevelEntities() {
99 switch (Lex.getKind()) {
100 default: return TokError("expected top-level entity");
101 case lltok::Eof: return false;
102 //case lltok::kw_define:
103 case lltok::kw_declare: if (ParseDeclare()) return true; break;
104 case lltok::kw_define: if (ParseDefine()) return true; break;
105 case lltok::kw_module: if (ParseModuleAsm()) return true; break;
106 case lltok::kw_target: if (ParseTargetDefinition()) return true; break;
107 case lltok::kw_deplibs: if (ParseDepLibs()) return true; break;
108 case lltok::kw_type: if (ParseUnnamedType()) return true; break;
109 case lltok::StringConstant: // FIXME: REMOVE IN LLVM 3.0
110 case lltok::LocalVar: if (ParseNamedType()) return true; break;
111 case lltok::GlobalVar: if (ParseNamedGlobal()) return true; break;
113 // The Global variable production with no name can have many different
114 // optional leading prefixes, the production is:
115 // GlobalVar ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
116 // OptionalAddrSpace ('constant'|'global') ...
117 case lltok::kw_private: // OptionalLinkage
118 case lltok::kw_internal: // OptionalLinkage
119 case lltok::kw_weak: // OptionalLinkage
120 case lltok::kw_weak_odr: // OptionalLinkage
121 case lltok::kw_linkonce: // OptionalLinkage
122 case lltok::kw_linkonce_odr: // OptionalLinkage
123 case lltok::kw_appending: // OptionalLinkage
124 case lltok::kw_dllexport: // OptionalLinkage
125 case lltok::kw_common: // OptionalLinkage
126 case lltok::kw_dllimport: // OptionalLinkage
127 case lltok::kw_extern_weak: // OptionalLinkage
128 case lltok::kw_external: { // OptionalLinkage
129 unsigned Linkage, Visibility;
130 if (ParseOptionalLinkage(Linkage) ||
131 ParseOptionalVisibility(Visibility) ||
132 ParseGlobal("", 0, Linkage, true, Visibility))
136 case lltok::kw_default: // OptionalVisibility
137 case lltok::kw_hidden: // OptionalVisibility
138 case lltok::kw_protected: { // OptionalVisibility
140 if (ParseOptionalVisibility(Visibility) ||
141 ParseGlobal("", 0, 0, false, Visibility))
146 case lltok::kw_thread_local: // OptionalThreadLocal
147 case lltok::kw_addrspace: // OptionalAddrSpace
148 case lltok::kw_constant: // GlobalType
149 case lltok::kw_global: // GlobalType
150 if (ParseGlobal("", 0, 0, false, 0)) return true;
158 /// ::= 'module' 'asm' STRINGCONSTANT
159 bool LLParser::ParseModuleAsm() {
160 assert(Lex.getKind() == lltok::kw_module);
164 if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
165 ParseStringConstant(AsmStr)) return true;
167 const std::string &AsmSoFar = M->getModuleInlineAsm();
168 if (AsmSoFar.empty())
169 M->setModuleInlineAsm(AsmStr);
171 M->setModuleInlineAsm(AsmSoFar+"\n"+AsmStr);
176 /// ::= 'target' 'triple' '=' STRINGCONSTANT
177 /// ::= 'target' 'datalayout' '=' STRINGCONSTANT
178 bool LLParser::ParseTargetDefinition() {
179 assert(Lex.getKind() == lltok::kw_target);
182 default: return TokError("unknown target property");
183 case lltok::kw_triple:
185 if (ParseToken(lltok::equal, "expected '=' after target triple") ||
186 ParseStringConstant(Str))
188 M->setTargetTriple(Str);
190 case lltok::kw_datalayout:
192 if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
193 ParseStringConstant(Str))
195 M->setDataLayout(Str);
201 /// ::= 'deplibs' '=' '[' ']'
202 /// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
203 bool LLParser::ParseDepLibs() {
204 assert(Lex.getKind() == lltok::kw_deplibs);
206 if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
207 ParseToken(lltok::lsquare, "expected '=' after deplibs"))
210 if (EatIfPresent(lltok::rsquare))
214 if (ParseStringConstant(Str)) return true;
217 while (EatIfPresent(lltok::comma)) {
218 if (ParseStringConstant(Str)) return true;
222 return ParseToken(lltok::rsquare, "expected ']' at end of list");
227 bool LLParser::ParseUnnamedType() {
228 assert(Lex.getKind() == lltok::kw_type);
229 LocTy TypeLoc = Lex.getLoc();
230 Lex.Lex(); // eat kw_type
232 PATypeHolder Ty(Type::VoidTy);
233 if (ParseType(Ty)) return true;
235 unsigned TypeID = NumberedTypes.size();
237 // See if this type was previously referenced.
238 std::map<unsigned, std::pair<PATypeHolder, LocTy> >::iterator
239 FI = ForwardRefTypeIDs.find(TypeID);
240 if (FI != ForwardRefTypeIDs.end()) {
241 if (FI->second.first.get() == Ty)
242 return Error(TypeLoc, "self referential type is invalid");
244 cast<DerivedType>(FI->second.first.get())->refineAbstractTypeTo(Ty);
245 Ty = FI->second.first.get();
246 ForwardRefTypeIDs.erase(FI);
249 NumberedTypes.push_back(Ty);
255 /// ::= LocalVar '=' 'type' type
256 bool LLParser::ParseNamedType() {
257 std::string Name = Lex.getStrVal();
258 LocTy NameLoc = Lex.getLoc();
259 Lex.Lex(); // eat LocalVar.
261 PATypeHolder Ty(Type::VoidTy);
263 if (ParseToken(lltok::equal, "expected '=' after name") ||
264 ParseToken(lltok::kw_type, "expected 'type' after name") ||
268 // Set the type name, checking for conflicts as we do so.
269 bool AlreadyExists = M->addTypeName(Name, Ty);
270 if (!AlreadyExists) return false;
272 // See if this type is a forward reference. We need to eagerly resolve
273 // types to allow recursive type redefinitions below.
274 std::map<std::string, std::pair<PATypeHolder, LocTy> >::iterator
275 FI = ForwardRefTypes.find(Name);
276 if (FI != ForwardRefTypes.end()) {
277 if (FI->second.first.get() == Ty)
278 return Error(NameLoc, "self referential type is invalid");
280 cast<DerivedType>(FI->second.first.get())->refineAbstractTypeTo(Ty);
281 Ty = FI->second.first.get();
282 ForwardRefTypes.erase(FI);
285 // Inserting a name that is already defined, get the existing name.
286 const Type *Existing = M->getTypeByName(Name);
287 assert(Existing && "Conflict but no matching type?!");
289 // Otherwise, this is an attempt to redefine a type. That's okay if
290 // the redefinition is identical to the original.
291 // FIXME: REMOVE REDEFINITIONS IN LLVM 3.0
292 if (Existing == Ty) return false;
294 // Any other kind of (non-equivalent) redefinition is an error.
295 return Error(NameLoc, "redefinition of type named '" + Name + "' of type '" +
296 Ty->getDescription() + "'");
301 /// ::= 'declare' FunctionHeader
302 bool LLParser::ParseDeclare() {
303 assert(Lex.getKind() == lltok::kw_declare);
307 return ParseFunctionHeader(F, false);
311 /// ::= 'define' FunctionHeader '{' ...
312 bool LLParser::ParseDefine() {
313 assert(Lex.getKind() == lltok::kw_define);
317 return ParseFunctionHeader(F, true) ||
318 ParseFunctionBody(*F);
324 bool LLParser::ParseGlobalType(bool &IsConstant) {
325 if (Lex.getKind() == lltok::kw_constant)
327 else if (Lex.getKind() == lltok::kw_global)
331 return TokError("expected 'global' or 'constant'");
337 /// ParseNamedGlobal:
338 /// GlobalVar '=' OptionalVisibility ALIAS ...
339 /// GlobalVar '=' OptionalLinkage OptionalVisibility ... -> global variable
340 bool LLParser::ParseNamedGlobal() {
341 assert(Lex.getKind() == lltok::GlobalVar);
342 LocTy NameLoc = Lex.getLoc();
343 std::string Name = Lex.getStrVal();
347 unsigned Linkage, Visibility;
348 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
349 ParseOptionalLinkage(Linkage, HasLinkage) ||
350 ParseOptionalVisibility(Visibility))
353 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
354 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
355 return ParseAlias(Name, NameLoc, Visibility);
359 /// ::= GlobalVar '=' OptionalVisibility 'alias' OptionalLinkage Aliasee
362 /// ::= 'bitcast' '(' TypeAndValue 'to' Type ')'
363 /// ::= 'getelementptr' '(' ... ')'
365 /// Everything through visibility has already been parsed.
367 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc,
368 unsigned Visibility) {
369 assert(Lex.getKind() == lltok::kw_alias);
372 LocTy LinkageLoc = Lex.getLoc();
373 if (ParseOptionalLinkage(Linkage))
376 if (Linkage != GlobalValue::ExternalLinkage &&
377 Linkage != GlobalValue::WeakAnyLinkage &&
378 Linkage != GlobalValue::WeakODRLinkage &&
379 Linkage != GlobalValue::InternalLinkage &&
380 Linkage != GlobalValue::PrivateLinkage)
381 return Error(LinkageLoc, "invalid linkage type for alias");
384 LocTy AliaseeLoc = Lex.getLoc();
385 if (Lex.getKind() != lltok::kw_bitcast &&
386 Lex.getKind() != lltok::kw_getelementptr) {
387 if (ParseGlobalTypeAndValue(Aliasee)) return true;
389 // The bitcast dest type is not present, it is implied by the dest type.
391 if (ParseValID(ID)) return true;
392 if (ID.Kind != ValID::t_Constant)
393 return Error(AliaseeLoc, "invalid aliasee");
394 Aliasee = ID.ConstantVal;
397 if (!isa<PointerType>(Aliasee->getType()))
398 return Error(AliaseeLoc, "alias must have pointer type");
400 // Okay, create the alias but do not insert it into the module yet.
401 GlobalAlias* GA = new GlobalAlias(Aliasee->getType(),
402 (GlobalValue::LinkageTypes)Linkage, Name,
404 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
406 // See if this value already exists in the symbol table. If so, it is either
407 // a redefinition or a definition of a forward reference.
408 if (GlobalValue *Val =
409 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name))) {
410 // See if this was a redefinition. If so, there is no entry in
412 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
413 I = ForwardRefVals.find(Name);
414 if (I == ForwardRefVals.end())
415 return Error(NameLoc, "redefinition of global named '@" + Name + "'");
417 // Otherwise, this was a definition of forward ref. Verify that types
419 if (Val->getType() != GA->getType())
420 return Error(NameLoc,
421 "forward reference and definition of alias have different types");
423 // If they agree, just RAUW the old value with the alias and remove the
425 Val->replaceAllUsesWith(GA);
426 Val->eraseFromParent();
427 ForwardRefVals.erase(I);
430 // Insert into the module, we know its name won't collide now.
431 M->getAliasList().push_back(GA);
432 assert(GA->getNameStr() == Name && "Should not be a name conflict!");
438 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalThreadLocal
439 /// OptionalAddrSpace GlobalType Type Const
440 /// ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
441 /// OptionalAddrSpace GlobalType Type Const
443 /// Everything through visibility has been parsed already.
445 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
446 unsigned Linkage, bool HasLinkage,
447 unsigned Visibility) {
449 bool ThreadLocal, IsConstant;
452 PATypeHolder Ty(Type::VoidTy);
453 if (ParseOptionalToken(lltok::kw_thread_local, ThreadLocal) ||
454 ParseOptionalAddrSpace(AddrSpace) ||
455 ParseGlobalType(IsConstant) ||
456 ParseType(Ty, TyLoc))
459 // If the linkage is specified and is external, then no initializer is
462 if (!HasLinkage || (Linkage != GlobalValue::DLLImportLinkage &&
463 Linkage != GlobalValue::ExternalWeakLinkage &&
464 Linkage != GlobalValue::ExternalLinkage)) {
465 if (ParseGlobalValue(Ty, Init))
469 if (isa<FunctionType>(Ty) || Ty == Type::LabelTy)
470 return Error(TyLoc, "invalid type for global variable");
472 GlobalVariable *GV = 0;
474 // See if the global was forward referenced, if so, use the global.
476 if ((GV = M->getGlobalVariable(Name, true)) &&
477 !ForwardRefVals.erase(Name))
478 return Error(NameLoc, "redefinition of global '@" + Name + "'");
480 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
481 I = ForwardRefValIDs.find(NumberedVals.size());
482 if (I != ForwardRefValIDs.end()) {
483 GV = cast<GlobalVariable>(I->second.first);
484 ForwardRefValIDs.erase(I);
489 GV = new GlobalVariable(Ty, false, GlobalValue::ExternalLinkage, 0, Name,
490 M, false, AddrSpace);
492 if (GV->getType()->getElementType() != Ty)
494 "forward reference and definition of global have different types");
496 // Move the forward-reference to the correct spot in the module.
497 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
501 NumberedVals.push_back(GV);
503 // Set the parsed properties on the global.
505 GV->setInitializer(Init);
506 GV->setConstant(IsConstant);
507 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
508 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
509 GV->setThreadLocal(ThreadLocal);
511 // Parse attributes on the global.
512 while (Lex.getKind() == lltok::comma) {
515 if (Lex.getKind() == lltok::kw_section) {
517 GV->setSection(Lex.getStrVal());
518 if (ParseToken(lltok::StringConstant, "expected global section string"))
520 } else if (Lex.getKind() == lltok::kw_align) {
522 if (ParseOptionalAlignment(Alignment)) return true;
523 GV->setAlignment(Alignment);
525 TokError("unknown global variable property!");
533 //===----------------------------------------------------------------------===//
534 // GlobalValue Reference/Resolution Routines.
535 //===----------------------------------------------------------------------===//
537 /// GetGlobalVal - Get a value with the specified name or ID, creating a
538 /// forward reference record if needed. This can return null if the value
539 /// exists but does not have the right type.
540 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, const Type *Ty,
542 const PointerType *PTy = dyn_cast<PointerType>(Ty);
544 Error(Loc, "global variable reference must have pointer type");
548 // Look this name up in the normal function symbol table.
550 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
552 // If this is a forward reference for the value, see if we already created a
553 // forward ref record.
555 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
556 I = ForwardRefVals.find(Name);
557 if (I != ForwardRefVals.end())
558 Val = I->second.first;
561 // If we have the value in the symbol table or fwd-ref table, return it.
563 if (Val->getType() == Ty) return Val;
564 Error(Loc, "'@" + Name + "' defined with type '" +
565 Val->getType()->getDescription() + "'");
569 // Otherwise, create a new forward reference for this value and remember it.
571 if (const FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType())) {
572 // Function types can return opaque but functions can't.
573 if (isa<OpaqueType>(FT->getReturnType())) {
574 Error(Loc, "function may not return opaque type");
578 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
580 FwdVal = new GlobalVariable(PTy->getElementType(), false,
581 GlobalValue::ExternalWeakLinkage, 0, Name, M);
584 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
588 GlobalValue *LLParser::GetGlobalVal(unsigned ID, const Type *Ty, LocTy Loc) {
589 const PointerType *PTy = dyn_cast<PointerType>(Ty);
591 Error(Loc, "global variable reference must have pointer type");
595 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
597 // If this is a forward reference for the value, see if we already created a
598 // forward ref record.
600 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
601 I = ForwardRefValIDs.find(ID);
602 if (I != ForwardRefValIDs.end())
603 Val = I->second.first;
606 // If we have the value in the symbol table or fwd-ref table, return it.
608 if (Val->getType() == Ty) return Val;
609 Error(Loc, "'@" + utostr(ID) + "' defined with type '" +
610 Val->getType()->getDescription() + "'");
614 // Otherwise, create a new forward reference for this value and remember it.
616 if (const FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType())) {
617 // Function types can return opaque but functions can't.
618 if (isa<OpaqueType>(FT->getReturnType())) {
619 Error(Loc, "function may not return opaque type");
622 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
624 FwdVal = new GlobalVariable(PTy->getElementType(), false,
625 GlobalValue::ExternalWeakLinkage, 0, "", M);
628 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
633 //===----------------------------------------------------------------------===//
635 //===----------------------------------------------------------------------===//
637 /// ParseToken - If the current token has the specified kind, eat it and return
638 /// success. Otherwise, emit the specified error and return failure.
639 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
640 if (Lex.getKind() != T)
641 return TokError(ErrMsg);
646 /// ParseStringConstant
647 /// ::= StringConstant
648 bool LLParser::ParseStringConstant(std::string &Result) {
649 if (Lex.getKind() != lltok::StringConstant)
650 return TokError("expected string constant");
651 Result = Lex.getStrVal();
658 bool LLParser::ParseUInt32(unsigned &Val) {
659 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
660 return TokError("expected integer");
661 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
662 if (Val64 != unsigned(Val64))
663 return TokError("expected 32-bit integer (too large)");
670 /// ParseOptionalAddrSpace
672 /// := 'addrspace' '(' uint32 ')'
673 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
675 if (!EatIfPresent(lltok::kw_addrspace))
677 return ParseToken(lltok::lparen, "expected '(' in address space") ||
678 ParseUInt32(AddrSpace) ||
679 ParseToken(lltok::rparen, "expected ')' in address space");
682 /// ParseOptionalAttrs - Parse a potentially empty attribute list. AttrKind
683 /// indicates what kind of attribute list this is: 0: function arg, 1: result,
684 /// 2: function attr.
685 /// 3: function arg after value: FIXME: REMOVE IN LLVM 3.0
686 bool LLParser::ParseOptionalAttrs(unsigned &Attrs, unsigned AttrKind) {
687 Attrs = Attribute::None;
688 LocTy AttrLoc = Lex.getLoc();
691 switch (Lex.getKind()) {
694 // Treat these as signext/zeroext if they occur in the argument list after
695 // the value, as in "call i8 @foo(i8 10 sext)". If they occur before the
696 // value, as in "call i8 @foo(i8 sext (" then it is part of a constant
698 // FIXME: REMOVE THIS IN LLVM 3.0
700 if (Lex.getKind() == lltok::kw_sext)
701 Attrs |= Attribute::SExt;
703 Attrs |= Attribute::ZExt;
707 default: // End of attributes.
708 if (AttrKind != 2 && (Attrs & Attribute::FunctionOnly))
709 return Error(AttrLoc, "invalid use of function-only attribute");
711 if (AttrKind != 0 && AttrKind != 3 && (Attrs & Attribute::ParameterOnly))
712 return Error(AttrLoc, "invalid use of parameter-only attribute");
715 case lltok::kw_zeroext: Attrs |= Attribute::ZExt; break;
716 case lltok::kw_signext: Attrs |= Attribute::SExt; break;
717 case lltok::kw_inreg: Attrs |= Attribute::InReg; break;
718 case lltok::kw_sret: Attrs |= Attribute::StructRet; break;
719 case lltok::kw_noalias: Attrs |= Attribute::NoAlias; break;
720 case lltok::kw_nocapture: Attrs |= Attribute::NoCapture; break;
721 case lltok::kw_byval: Attrs |= Attribute::ByVal; break;
722 case lltok::kw_nest: Attrs |= Attribute::Nest; break;
724 case lltok::kw_noreturn: Attrs |= Attribute::NoReturn; break;
725 case lltok::kw_nounwind: Attrs |= Attribute::NoUnwind; break;
726 case lltok::kw_noinline: Attrs |= Attribute::NoInline; break;
727 case lltok::kw_readnone: Attrs |= Attribute::ReadNone; break;
728 case lltok::kw_readonly: Attrs |= Attribute::ReadOnly; break;
729 case lltok::kw_alwaysinline: Attrs |= Attribute::AlwaysInline; break;
730 case lltok::kw_optsize: Attrs |= Attribute::OptimizeForSize; break;
731 case lltok::kw_ssp: Attrs |= Attribute::StackProtect; break;
732 case lltok::kw_sspreq: Attrs |= Attribute::StackProtectReq; break;
733 case lltok::kw_noredzone: Attrs |= Attribute::NoRedZone; break;
734 case lltok::kw_noimplicitfloat: Attrs |= Attribute::NoImplicitFloat; break;
736 case lltok::kw_align: {
738 if (ParseOptionalAlignment(Alignment))
740 Attrs |= Attribute::constructAlignmentFromInt(Alignment);
748 /// ParseOptionalLinkage
755 /// ::= 'linkonce_odr'
760 /// ::= 'extern_weak'
762 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
764 switch (Lex.getKind()) {
765 default: Res = GlobalValue::ExternalLinkage; return false;
766 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
767 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
768 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
769 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
770 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
771 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
772 case lltok::kw_available_externally:
773 Res = GlobalValue::AvailableExternallyLinkage;
775 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
776 case lltok::kw_dllexport: Res = GlobalValue::DLLExportLinkage; break;
777 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
778 case lltok::kw_dllimport: Res = GlobalValue::DLLImportLinkage; break;
779 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
780 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
787 /// ParseOptionalVisibility
793 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
794 switch (Lex.getKind()) {
795 default: Res = GlobalValue::DefaultVisibility; return false;
796 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
797 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
798 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
804 /// ParseOptionalCallingConv
809 /// ::= 'x86_stdcallcc'
810 /// ::= 'x86_fastcallcc'
813 bool LLParser::ParseOptionalCallingConv(unsigned &CC) {
814 switch (Lex.getKind()) {
815 default: CC = CallingConv::C; return false;
816 case lltok::kw_ccc: CC = CallingConv::C; break;
817 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
818 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
819 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
820 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
821 case lltok::kw_cc: Lex.Lex(); return ParseUInt32(CC);
827 /// ParseOptionalAlignment
830 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
832 if (!EatIfPresent(lltok::kw_align))
834 LocTy AlignLoc = Lex.getLoc();
835 if (ParseUInt32(Alignment)) return true;
836 if (!isPowerOf2_32(Alignment))
837 return Error(AlignLoc, "alignment is not a power of two");
841 /// ParseOptionalCommaAlignment
843 /// ::= ',' 'align' 4
844 bool LLParser::ParseOptionalCommaAlignment(unsigned &Alignment) {
846 if (!EatIfPresent(lltok::comma))
848 return ParseToken(lltok::kw_align, "expected 'align'") ||
849 ParseUInt32(Alignment);
853 /// ::= (',' uint32)+
854 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices) {
855 if (Lex.getKind() != lltok::comma)
856 return TokError("expected ',' as start of index list");
858 while (EatIfPresent(lltok::comma)) {
860 if (ParseUInt32(Idx)) return true;
861 Indices.push_back(Idx);
867 //===----------------------------------------------------------------------===//
869 //===----------------------------------------------------------------------===//
871 /// ParseType - Parse and resolve a full type.
872 bool LLParser::ParseType(PATypeHolder &Result, bool AllowVoid) {
873 LocTy TypeLoc = Lex.getLoc();
874 if (ParseTypeRec(Result)) return true;
876 // Verify no unresolved uprefs.
878 return Error(UpRefs.back().Loc, "invalid unresolved type up reference");
880 if (!AllowVoid && Result.get() == Type::VoidTy)
881 return Error(TypeLoc, "void type only allowed for function results");
886 /// HandleUpRefs - Every time we finish a new layer of types, this function is
887 /// called. It loops through the UpRefs vector, which is a list of the
888 /// currently active types. For each type, if the up-reference is contained in
889 /// the newly completed type, we decrement the level count. When the level
890 /// count reaches zero, the up-referenced type is the type that is passed in:
891 /// thus we can complete the cycle.
893 PATypeHolder LLParser::HandleUpRefs(const Type *ty) {
894 // If Ty isn't abstract, or if there are no up-references in it, then there is
895 // nothing to resolve here.
896 if (!ty->isAbstract() || UpRefs.empty()) return ty;
900 errs() << "Type '" << Ty->getDescription()
901 << "' newly formed. Resolving upreferences.\n"
902 << UpRefs.size() << " upreferences active!\n";
905 // If we find any resolvable upreferences (i.e., those whose NestingLevel goes
906 // to zero), we resolve them all together before we resolve them to Ty. At
907 // the end of the loop, if there is anything to resolve to Ty, it will be in
909 OpaqueType *TypeToResolve = 0;
911 for (unsigned i = 0; i != UpRefs.size(); ++i) {
912 // Determine if 'Ty' directly contains this up-references 'LastContainedTy'.
914 std::find(Ty->subtype_begin(), Ty->subtype_end(),
915 UpRefs[i].LastContainedTy) != Ty->subtype_end();
918 errs() << " UR#" << i << " - TypeContains(" << Ty->getDescription() << ", "
919 << UpRefs[i].LastContainedTy->getDescription() << ") = "
920 << (ContainsType ? "true" : "false")
921 << " level=" << UpRefs[i].NestingLevel << "\n";
926 // Decrement level of upreference
927 unsigned Level = --UpRefs[i].NestingLevel;
928 UpRefs[i].LastContainedTy = Ty;
930 // If the Up-reference has a non-zero level, it shouldn't be resolved yet.
935 errs() << " * Resolving upreference for " << UpRefs[i].UpRefTy << "\n";
938 TypeToResolve = UpRefs[i].UpRefTy;
940 UpRefs[i].UpRefTy->refineAbstractTypeTo(TypeToResolve);
941 UpRefs.erase(UpRefs.begin()+i); // Remove from upreference list.
942 --i; // Do not skip the next element.
946 TypeToResolve->refineAbstractTypeTo(Ty);
952 /// ParseTypeRec - The recursive function used to process the internal
953 /// implementation details of types.
954 bool LLParser::ParseTypeRec(PATypeHolder &Result) {
955 switch (Lex.getKind()) {
957 return TokError("expected type");
959 // TypeRec ::= 'float' | 'void' (etc)
960 Result = Lex.getTyVal();
963 case lltok::kw_opaque:
964 // TypeRec ::= 'opaque'
965 Result = OpaqueType::get();
969 // TypeRec ::= '{' ... '}'
970 if (ParseStructType(Result, false))
974 // TypeRec ::= '[' ... ']'
975 Lex.Lex(); // eat the lsquare.
976 if (ParseArrayVectorType(Result, false))
979 case lltok::less: // Either vector or packed struct.
980 // TypeRec ::= '<' ... '>'
982 if (Lex.getKind() == lltok::lbrace) {
983 if (ParseStructType(Result, true) ||
984 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
986 } else if (ParseArrayVectorType(Result, true))
989 case lltok::LocalVar:
990 case lltok::StringConstant: // FIXME: REMOVE IN LLVM 3.0
992 if (const Type *T = M->getTypeByName(Lex.getStrVal())) {
995 Result = OpaqueType::get();
996 ForwardRefTypes.insert(std::make_pair(Lex.getStrVal(),
997 std::make_pair(Result,
999 M->addTypeName(Lex.getStrVal(), Result.get());
1004 case lltok::LocalVarID:
1006 if (Lex.getUIntVal() < NumberedTypes.size())
1007 Result = NumberedTypes[Lex.getUIntVal()];
1009 std::map<unsigned, std::pair<PATypeHolder, LocTy> >::iterator
1010 I = ForwardRefTypeIDs.find(Lex.getUIntVal());
1011 if (I != ForwardRefTypeIDs.end())
1012 Result = I->second.first;
1014 Result = OpaqueType::get();
1015 ForwardRefTypeIDs.insert(std::make_pair(Lex.getUIntVal(),
1016 std::make_pair(Result,
1022 case lltok::backslash: {
1023 // TypeRec ::= '\' 4
1026 if (ParseUInt32(Val)) return true;
1027 OpaqueType *OT = OpaqueType::get(); // Use temporary placeholder.
1028 UpRefs.push_back(UpRefRecord(Lex.getLoc(), Val, OT));
1034 // Parse the type suffixes.
1036 switch (Lex.getKind()) {
1038 default: return false;
1040 // TypeRec ::= TypeRec '*'
1042 if (Result.get() == Type::LabelTy)
1043 return TokError("basic block pointers are invalid");
1044 if (Result.get() == Type::VoidTy)
1045 return TokError("pointers to void are invalid; use i8* instead");
1046 Result = HandleUpRefs(PointerType::getUnqual(Result.get()));
1050 // TypeRec ::= TypeRec 'addrspace' '(' uint32 ')' '*'
1051 case lltok::kw_addrspace: {
1052 if (Result.get() == Type::LabelTy)
1053 return TokError("basic block pointers are invalid");
1054 if (Result.get() == Type::VoidTy)
1055 return TokError("pointers to void are invalid; use i8* instead");
1057 if (ParseOptionalAddrSpace(AddrSpace) ||
1058 ParseToken(lltok::star, "expected '*' in address space"))
1061 Result = HandleUpRefs(PointerType::get(Result.get(), AddrSpace));
1065 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1067 if (ParseFunctionType(Result))
1074 /// ParseParameterList
1076 /// ::= '(' Arg (',' Arg)* ')'
1078 /// ::= Type OptionalAttributes Value OptionalAttributes
1079 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1080 PerFunctionState &PFS) {
1081 if (ParseToken(lltok::lparen, "expected '(' in call"))
1084 while (Lex.getKind() != lltok::rparen) {
1085 // If this isn't the first argument, we need a comma.
1086 if (!ArgList.empty() &&
1087 ParseToken(lltok::comma, "expected ',' in argument list"))
1090 // Parse the argument.
1092 PATypeHolder ArgTy(Type::VoidTy);
1093 unsigned ArgAttrs1, ArgAttrs2;
1095 if (ParseType(ArgTy, ArgLoc) ||
1096 ParseOptionalAttrs(ArgAttrs1, 0) ||
1097 ParseValue(ArgTy, V, PFS) ||
1098 // FIXME: Should not allow attributes after the argument, remove this in
1100 ParseOptionalAttrs(ArgAttrs2, 3))
1102 ArgList.push_back(ParamInfo(ArgLoc, V, ArgAttrs1|ArgAttrs2));
1105 Lex.Lex(); // Lex the ')'.
1111 /// ParseArgumentList - Parse the argument list for a function type or function
1112 /// prototype. If 'inType' is true then we are parsing a FunctionType.
1113 /// ::= '(' ArgTypeListI ')'
1117 /// ::= ArgTypeList ',' '...'
1118 /// ::= ArgType (',' ArgType)*
1120 bool LLParser::ParseArgumentList(std::vector<ArgInfo> &ArgList,
1121 bool &isVarArg, bool inType) {
1123 assert(Lex.getKind() == lltok::lparen);
1124 Lex.Lex(); // eat the (.
1126 if (Lex.getKind() == lltok::rparen) {
1128 } else if (Lex.getKind() == lltok::dotdotdot) {
1132 LocTy TypeLoc = Lex.getLoc();
1133 PATypeHolder ArgTy(Type::VoidTy);
1137 // If we're parsing a type, use ParseTypeRec, because we allow recursive
1138 // types (such as a function returning a pointer to itself). If parsing a
1139 // function prototype, we require fully resolved types.
1140 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1141 ParseOptionalAttrs(Attrs, 0)) return true;
1143 if (ArgTy == Type::VoidTy)
1144 return Error(TypeLoc, "argument can not have void type");
1146 if (Lex.getKind() == lltok::LocalVar ||
1147 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1148 Name = Lex.getStrVal();
1152 if (!ArgTy->isFirstClassType() && !isa<OpaqueType>(ArgTy))
1153 return Error(TypeLoc, "invalid type for function argument");
1155 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1157 while (EatIfPresent(lltok::comma)) {
1158 // Handle ... at end of arg list.
1159 if (EatIfPresent(lltok::dotdotdot)) {
1164 // Otherwise must be an argument type.
1165 TypeLoc = Lex.getLoc();
1166 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1167 ParseOptionalAttrs(Attrs, 0)) return true;
1169 if (ArgTy == Type::VoidTy)
1170 return Error(TypeLoc, "argument can not have void type");
1172 if (Lex.getKind() == lltok::LocalVar ||
1173 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1174 Name = Lex.getStrVal();
1180 if (!ArgTy->isFirstClassType() && !isa<OpaqueType>(ArgTy))
1181 return Error(TypeLoc, "invalid type for function argument");
1183 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1187 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1190 /// ParseFunctionType
1191 /// ::= Type ArgumentList OptionalAttrs
1192 bool LLParser::ParseFunctionType(PATypeHolder &Result) {
1193 assert(Lex.getKind() == lltok::lparen);
1195 if (!FunctionType::isValidReturnType(Result))
1196 return TokError("invalid function return type");
1198 std::vector<ArgInfo> ArgList;
1201 if (ParseArgumentList(ArgList, isVarArg, true) ||
1202 // FIXME: Allow, but ignore attributes on function types!
1203 // FIXME: Remove in LLVM 3.0
1204 ParseOptionalAttrs(Attrs, 2))
1207 // Reject names on the arguments lists.
1208 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1209 if (!ArgList[i].Name.empty())
1210 return Error(ArgList[i].Loc, "argument name invalid in function type");
1211 if (!ArgList[i].Attrs != 0) {
1212 // Allow but ignore attributes on function types; this permits
1214 // FIXME: REJECT ATTRIBUTES ON FUNCTION TYPES in LLVM 3.0
1218 std::vector<const Type*> ArgListTy;
1219 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1220 ArgListTy.push_back(ArgList[i].Type);
1222 Result = HandleUpRefs(FunctionType::get(Result.get(), ArgListTy, isVarArg));
1226 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
1229 /// ::= '{' TypeRec (',' TypeRec)* '}'
1230 /// ::= '<' '{' '}' '>'
1231 /// ::= '<' '{' TypeRec (',' TypeRec)* '}' '>'
1232 bool LLParser::ParseStructType(PATypeHolder &Result, bool Packed) {
1233 assert(Lex.getKind() == lltok::lbrace);
1234 Lex.Lex(); // Consume the '{'
1236 if (EatIfPresent(lltok::rbrace)) {
1237 Result = StructType::get(std::vector<const Type*>(), Packed);
1241 std::vector<PATypeHolder> ParamsList;
1242 LocTy EltTyLoc = Lex.getLoc();
1243 if (ParseTypeRec(Result)) return true;
1244 ParamsList.push_back(Result);
1246 if (Result == Type::VoidTy)
1247 return Error(EltTyLoc, "struct element can not have void type");
1249 while (EatIfPresent(lltok::comma)) {
1250 EltTyLoc = Lex.getLoc();
1251 if (ParseTypeRec(Result)) return true;
1253 if (Result == Type::VoidTy)
1254 return Error(EltTyLoc, "struct element can not have void type");
1256 ParamsList.push_back(Result);
1259 if (ParseToken(lltok::rbrace, "expected '}' at end of struct"))
1262 std::vector<const Type*> ParamsListTy;
1263 for (unsigned i = 0, e = ParamsList.size(); i != e; ++i)
1264 ParamsListTy.push_back(ParamsList[i].get());
1265 Result = HandleUpRefs(StructType::get(ParamsListTy, Packed));
1269 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
1270 /// token has already been consumed.
1272 /// ::= '[' APSINTVAL 'x' Types ']'
1273 /// ::= '<' APSINTVAL 'x' Types '>'
1274 bool LLParser::ParseArrayVectorType(PATypeHolder &Result, bool isVector) {
1275 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
1276 Lex.getAPSIntVal().getBitWidth() > 64)
1277 return TokError("expected number in address space");
1279 LocTy SizeLoc = Lex.getLoc();
1280 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
1283 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
1286 LocTy TypeLoc = Lex.getLoc();
1287 PATypeHolder EltTy(Type::VoidTy);
1288 if (ParseTypeRec(EltTy)) return true;
1290 if (EltTy == Type::VoidTy)
1291 return Error(TypeLoc, "array and vector element type cannot be void");
1293 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
1294 "expected end of sequential type"))
1299 return Error(SizeLoc, "zero element vector is illegal");
1300 if ((unsigned)Size != Size)
1301 return Error(SizeLoc, "size too large for vector");
1302 if (!EltTy->isFloatingPoint() && !EltTy->isInteger())
1303 return Error(TypeLoc, "vector element type must be fp or integer");
1304 Result = VectorType::get(EltTy, unsigned(Size));
1306 if (!EltTy->isFirstClassType() && !isa<OpaqueType>(EltTy))
1307 return Error(TypeLoc, "invalid array element type");
1308 Result = HandleUpRefs(ArrayType::get(EltTy, Size));
1313 //===----------------------------------------------------------------------===//
1314 // Function Semantic Analysis.
1315 //===----------------------------------------------------------------------===//
1317 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f)
1320 // Insert unnamed arguments into the NumberedVals list.
1321 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
1324 NumberedVals.push_back(AI);
1327 LLParser::PerFunctionState::~PerFunctionState() {
1328 // If there were any forward referenced non-basicblock values, delete them.
1329 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
1330 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
1331 if (!isa<BasicBlock>(I->second.first)) {
1332 I->second.first->replaceAllUsesWith(UndefValue::get(I->second.first
1334 delete I->second.first;
1335 I->second.first = 0;
1338 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1339 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
1340 if (!isa<BasicBlock>(I->second.first)) {
1341 I->second.first->replaceAllUsesWith(UndefValue::get(I->second.first
1343 delete I->second.first;
1344 I->second.first = 0;
1348 bool LLParser::PerFunctionState::VerifyFunctionComplete() {
1349 if (!ForwardRefVals.empty())
1350 return P.Error(ForwardRefVals.begin()->second.second,
1351 "use of undefined value '%" + ForwardRefVals.begin()->first +
1353 if (!ForwardRefValIDs.empty())
1354 return P.Error(ForwardRefValIDs.begin()->second.second,
1355 "use of undefined value '%" +
1356 utostr(ForwardRefValIDs.begin()->first) + "'");
1361 /// GetVal - Get a value with the specified name or ID, creating a
1362 /// forward reference record if needed. This can return null if the value
1363 /// exists but does not have the right type.
1364 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
1365 const Type *Ty, LocTy Loc) {
1366 // Look this name up in the normal function symbol table.
1367 Value *Val = F.getValueSymbolTable().lookup(Name);
1369 // If this is a forward reference for the value, see if we already created a
1370 // forward ref record.
1372 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1373 I = ForwardRefVals.find(Name);
1374 if (I != ForwardRefVals.end())
1375 Val = I->second.first;
1378 // If we have the value in the symbol table or fwd-ref table, return it.
1380 if (Val->getType() == Ty) return Val;
1381 if (Ty == Type::LabelTy)
1382 P.Error(Loc, "'%" + Name + "' is not a basic block");
1384 P.Error(Loc, "'%" + Name + "' defined with type '" +
1385 Val->getType()->getDescription() + "'");
1389 // Don't make placeholders with invalid type.
1390 if (!Ty->isFirstClassType() && !isa<OpaqueType>(Ty) && Ty != Type::LabelTy) {
1391 P.Error(Loc, "invalid use of a non-first-class type");
1395 // Otherwise, create a new forward reference for this value and remember it.
1397 if (Ty == Type::LabelTy)
1398 FwdVal = BasicBlock::Create(Name, &F);
1400 FwdVal = new Argument(Ty, Name);
1402 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1406 Value *LLParser::PerFunctionState::GetVal(unsigned ID, const Type *Ty,
1408 // Look this name up in the normal function symbol table.
1409 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
1411 // If this is a forward reference for the value, see if we already created a
1412 // forward ref record.
1414 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1415 I = ForwardRefValIDs.find(ID);
1416 if (I != ForwardRefValIDs.end())
1417 Val = I->second.first;
1420 // If we have the value in the symbol table or fwd-ref table, return it.
1422 if (Val->getType() == Ty) return Val;
1423 if (Ty == Type::LabelTy)
1424 P.Error(Loc, "'%" + utostr(ID) + "' is not a basic block");
1426 P.Error(Loc, "'%" + utostr(ID) + "' defined with type '" +
1427 Val->getType()->getDescription() + "'");
1431 if (!Ty->isFirstClassType() && !isa<OpaqueType>(Ty) && Ty != Type::LabelTy) {
1432 P.Error(Loc, "invalid use of a non-first-class type");
1436 // Otherwise, create a new forward reference for this value and remember it.
1438 if (Ty == Type::LabelTy)
1439 FwdVal = BasicBlock::Create("", &F);
1441 FwdVal = new Argument(Ty);
1443 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1447 /// SetInstName - After an instruction is parsed and inserted into its
1448 /// basic block, this installs its name.
1449 bool LLParser::PerFunctionState::SetInstName(int NameID,
1450 const std::string &NameStr,
1451 LocTy NameLoc, Instruction *Inst) {
1452 // If this instruction has void type, it cannot have a name or ID specified.
1453 if (Inst->getType() == Type::VoidTy) {
1454 if (NameID != -1 || !NameStr.empty())
1455 return P.Error(NameLoc, "instructions returning void cannot have a name");
1459 // If this was a numbered instruction, verify that the instruction is the
1460 // expected value and resolve any forward references.
1461 if (NameStr.empty()) {
1462 // If neither a name nor an ID was specified, just use the next ID.
1464 NameID = NumberedVals.size();
1466 if (unsigned(NameID) != NumberedVals.size())
1467 return P.Error(NameLoc, "instruction expected to be numbered '%" +
1468 utostr(NumberedVals.size()) + "'");
1470 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
1471 ForwardRefValIDs.find(NameID);
1472 if (FI != ForwardRefValIDs.end()) {
1473 if (FI->second.first->getType() != Inst->getType())
1474 return P.Error(NameLoc, "instruction forward referenced with type '" +
1475 FI->second.first->getType()->getDescription() + "'");
1476 FI->second.first->replaceAllUsesWith(Inst);
1477 ForwardRefValIDs.erase(FI);
1480 NumberedVals.push_back(Inst);
1484 // Otherwise, the instruction had a name. Resolve forward refs and set it.
1485 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1486 FI = ForwardRefVals.find(NameStr);
1487 if (FI != ForwardRefVals.end()) {
1488 if (FI->second.first->getType() != Inst->getType())
1489 return P.Error(NameLoc, "instruction forward referenced with type '" +
1490 FI->second.first->getType()->getDescription() + "'");
1491 FI->second.first->replaceAllUsesWith(Inst);
1492 ForwardRefVals.erase(FI);
1495 // Set the name on the instruction.
1496 Inst->setName(NameStr);
1498 if (Inst->getNameStr() != NameStr)
1499 return P.Error(NameLoc, "multiple definition of local value named '" +
1504 /// GetBB - Get a basic block with the specified name or ID, creating a
1505 /// forward reference record if needed.
1506 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
1508 return cast_or_null<BasicBlock>(GetVal(Name, Type::LabelTy, Loc));
1511 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
1512 return cast_or_null<BasicBlock>(GetVal(ID, Type::LabelTy, Loc));
1515 /// DefineBB - Define the specified basic block, which is either named or
1516 /// unnamed. If there is an error, this returns null otherwise it returns
1517 /// the block being defined.
1518 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
1522 BB = GetBB(NumberedVals.size(), Loc);
1524 BB = GetBB(Name, Loc);
1525 if (BB == 0) return 0; // Already diagnosed error.
1527 // Move the block to the end of the function. Forward ref'd blocks are
1528 // inserted wherever they happen to be referenced.
1529 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
1531 // Remove the block from forward ref sets.
1533 ForwardRefValIDs.erase(NumberedVals.size());
1534 NumberedVals.push_back(BB);
1536 // BB forward references are already in the function symbol table.
1537 ForwardRefVals.erase(Name);
1543 //===----------------------------------------------------------------------===//
1545 //===----------------------------------------------------------------------===//
1547 /// ParseValID - Parse an abstract value that doesn't necessarily have a
1548 /// type implied. For example, if we parse "4" we don't know what integer type
1549 /// it has. The value will later be combined with its type and checked for
1551 bool LLParser::ParseValID(ValID &ID) {
1552 ID.Loc = Lex.getLoc();
1553 switch (Lex.getKind()) {
1554 default: return TokError("expected value token");
1555 case lltok::GlobalID: // @42
1556 ID.UIntVal = Lex.getUIntVal();
1557 ID.Kind = ValID::t_GlobalID;
1559 case lltok::GlobalVar: // @foo
1560 ID.StrVal = Lex.getStrVal();
1561 ID.Kind = ValID::t_GlobalName;
1563 case lltok::LocalVarID: // %42
1564 ID.UIntVal = Lex.getUIntVal();
1565 ID.Kind = ValID::t_LocalID;
1567 case lltok::LocalVar: // %foo
1568 case lltok::StringConstant: // "foo" - FIXME: REMOVE IN LLVM 3.0
1569 ID.StrVal = Lex.getStrVal();
1570 ID.Kind = ValID::t_LocalName;
1572 case lltok::Metadata: { // !{...} MDNode, !"foo" MDString
1573 ID.Kind = ValID::t_Constant;
1575 if (Lex.getKind() == lltok::lbrace) {
1576 SmallVector<Value*, 16> Elts;
1577 if (ParseMDNodeVector(Elts) ||
1578 ParseToken(lltok::rbrace, "expected end of metadata node"))
1581 ID.ConstantVal = MDNode::get(Elts.data(), Elts.size());
1586 // ::= '!' STRINGCONSTANT
1588 if (ParseStringConstant(Str)) return true;
1590 ID.ConstantVal = MDString::get(Str.data(), Str.data() + Str.size());
1594 ID.APSIntVal = Lex.getAPSIntVal();
1595 ID.Kind = ValID::t_APSInt;
1597 case lltok::APFloat:
1598 ID.APFloatVal = Lex.getAPFloatVal();
1599 ID.Kind = ValID::t_APFloat;
1601 case lltok::kw_true:
1602 ID.ConstantVal = ConstantInt::getTrue();
1603 ID.Kind = ValID::t_Constant;
1605 case lltok::kw_false:
1606 ID.ConstantVal = ConstantInt::getFalse();
1607 ID.Kind = ValID::t_Constant;
1609 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
1610 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
1611 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
1613 case lltok::lbrace: {
1614 // ValID ::= '{' ConstVector '}'
1616 SmallVector<Constant*, 16> Elts;
1617 if (ParseGlobalValueVector(Elts) ||
1618 ParseToken(lltok::rbrace, "expected end of struct constant"))
1621 ID.ConstantVal = ConstantStruct::get(Elts.data(), Elts.size(), false);
1622 ID.Kind = ValID::t_Constant;
1626 // ValID ::= '<' ConstVector '>' --> Vector.
1627 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
1629 bool isPackedStruct = EatIfPresent(lltok::lbrace);
1631 SmallVector<Constant*, 16> Elts;
1632 LocTy FirstEltLoc = Lex.getLoc();
1633 if (ParseGlobalValueVector(Elts) ||
1635 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
1636 ParseToken(lltok::greater, "expected end of constant"))
1639 if (isPackedStruct) {
1640 ID.ConstantVal = ConstantStruct::get(Elts.data(), Elts.size(), true);
1641 ID.Kind = ValID::t_Constant;
1646 return Error(ID.Loc, "constant vector must not be empty");
1648 if (!Elts[0]->getType()->isInteger() &&
1649 !Elts[0]->getType()->isFloatingPoint())
1650 return Error(FirstEltLoc,
1651 "vector elements must have integer or floating point type");
1653 // Verify that all the vector elements have the same type.
1654 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
1655 if (Elts[i]->getType() != Elts[0]->getType())
1656 return Error(FirstEltLoc,
1657 "vector element #" + utostr(i) +
1658 " is not of type '" + Elts[0]->getType()->getDescription());
1660 ID.ConstantVal = ConstantVector::get(Elts.data(), Elts.size());
1661 ID.Kind = ValID::t_Constant;
1664 case lltok::lsquare: { // Array Constant
1666 SmallVector<Constant*, 16> Elts;
1667 LocTy FirstEltLoc = Lex.getLoc();
1668 if (ParseGlobalValueVector(Elts) ||
1669 ParseToken(lltok::rsquare, "expected end of array constant"))
1672 // Handle empty element.
1674 // Use undef instead of an array because it's inconvenient to determine
1675 // the element type at this point, there being no elements to examine.
1676 ID.Kind = ValID::t_EmptyArray;
1680 if (!Elts[0]->getType()->isFirstClassType())
1681 return Error(FirstEltLoc, "invalid array element type: " +
1682 Elts[0]->getType()->getDescription());
1684 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
1686 // Verify all elements are correct type!
1687 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
1688 if (Elts[i]->getType() != Elts[0]->getType())
1689 return Error(FirstEltLoc,
1690 "array element #" + utostr(i) +
1691 " is not of type '" +Elts[0]->getType()->getDescription());
1694 ID.ConstantVal = ConstantArray::get(ATy, Elts.data(), Elts.size());
1695 ID.Kind = ValID::t_Constant;
1698 case lltok::kw_c: // c "foo"
1700 ID.ConstantVal = ConstantArray::get(Lex.getStrVal(), false);
1701 if (ParseToken(lltok::StringConstant, "expected string")) return true;
1702 ID.Kind = ValID::t_Constant;
1705 case lltok::kw_asm: {
1706 // ValID ::= 'asm' SideEffect? STRINGCONSTANT ',' STRINGCONSTANT
1709 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
1710 ParseStringConstant(ID.StrVal) ||
1711 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
1712 ParseToken(lltok::StringConstant, "expected constraint string"))
1714 ID.StrVal2 = Lex.getStrVal();
1715 ID.UIntVal = HasSideEffect;
1716 ID.Kind = ValID::t_InlineAsm;
1720 case lltok::kw_trunc:
1721 case lltok::kw_zext:
1722 case lltok::kw_sext:
1723 case lltok::kw_fptrunc:
1724 case lltok::kw_fpext:
1725 case lltok::kw_bitcast:
1726 case lltok::kw_uitofp:
1727 case lltok::kw_sitofp:
1728 case lltok::kw_fptoui:
1729 case lltok::kw_fptosi:
1730 case lltok::kw_inttoptr:
1731 case lltok::kw_ptrtoint: {
1732 unsigned Opc = Lex.getUIntVal();
1733 PATypeHolder DestTy(Type::VoidTy);
1736 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
1737 ParseGlobalTypeAndValue(SrcVal) ||
1738 ParseToken(lltok::kw_to, "expected 'to' int constantexpr cast") ||
1739 ParseType(DestTy) ||
1740 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
1742 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
1743 return Error(ID.Loc, "invalid cast opcode for cast from '" +
1744 SrcVal->getType()->getDescription() + "' to '" +
1745 DestTy->getDescription() + "'");
1746 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc, SrcVal,
1748 ID.Kind = ValID::t_Constant;
1751 case lltok::kw_extractvalue: {
1754 SmallVector<unsigned, 4> Indices;
1755 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
1756 ParseGlobalTypeAndValue(Val) ||
1757 ParseIndexList(Indices) ||
1758 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
1760 if (!isa<StructType>(Val->getType()) && !isa<ArrayType>(Val->getType()))
1761 return Error(ID.Loc, "extractvalue operand must be array or struct");
1762 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
1764 return Error(ID.Loc, "invalid indices for extractvalue");
1766 ConstantExpr::getExtractValue(Val, Indices.data(), Indices.size());
1767 ID.Kind = ValID::t_Constant;
1770 case lltok::kw_insertvalue: {
1772 Constant *Val0, *Val1;
1773 SmallVector<unsigned, 4> Indices;
1774 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
1775 ParseGlobalTypeAndValue(Val0) ||
1776 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
1777 ParseGlobalTypeAndValue(Val1) ||
1778 ParseIndexList(Indices) ||
1779 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
1781 if (!isa<StructType>(Val0->getType()) && !isa<ArrayType>(Val0->getType()))
1782 return Error(ID.Loc, "extractvalue operand must be array or struct");
1783 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
1785 return Error(ID.Loc, "invalid indices for insertvalue");
1787 ConstantExpr::getInsertValue(Val0, Val1, Indices.data(), Indices.size());
1788 ID.Kind = ValID::t_Constant;
1791 case lltok::kw_icmp:
1792 case lltok::kw_fcmp:
1793 case lltok::kw_vicmp:
1794 case lltok::kw_vfcmp: {
1795 unsigned PredVal, Opc = Lex.getUIntVal();
1796 Constant *Val0, *Val1;
1798 if (ParseCmpPredicate(PredVal, Opc) ||
1799 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
1800 ParseGlobalTypeAndValue(Val0) ||
1801 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
1802 ParseGlobalTypeAndValue(Val1) ||
1803 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
1806 if (Val0->getType() != Val1->getType())
1807 return Error(ID.Loc, "compare operands must have the same type");
1809 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
1811 if (Opc == Instruction::FCmp) {
1812 if (!Val0->getType()->isFPOrFPVector())
1813 return Error(ID.Loc, "fcmp requires floating point operands");
1814 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
1815 } else if (Opc == Instruction::ICmp) {
1816 if (!Val0->getType()->isIntOrIntVector() &&
1817 !isa<PointerType>(Val0->getType()))
1818 return Error(ID.Loc, "icmp requires pointer or integer operands");
1819 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
1820 } else if (Opc == Instruction::VFCmp) {
1821 // FIXME: REMOVE VFCMP Support
1822 if (!Val0->getType()->isFPOrFPVector() ||
1823 !isa<VectorType>(Val0->getType()))
1824 return Error(ID.Loc, "vfcmp requires vector floating point operands");
1825 ID.ConstantVal = ConstantExpr::getVFCmp(Pred, Val0, Val1);
1826 } else if (Opc == Instruction::VICmp) {
1827 // FIXME: REMOVE VICMP Support
1828 if (!Val0->getType()->isIntOrIntVector() ||
1829 !isa<VectorType>(Val0->getType()))
1830 return Error(ID.Loc, "vicmp requires vector floating point operands");
1831 ID.ConstantVal = ConstantExpr::getVICmp(Pred, Val0, Val1);
1833 ID.Kind = ValID::t_Constant;
1837 // Binary Operators.
1839 case lltok::kw_fadd:
1841 case lltok::kw_fsub:
1843 case lltok::kw_fmul:
1844 case lltok::kw_udiv:
1845 case lltok::kw_sdiv:
1846 case lltok::kw_fdiv:
1847 case lltok::kw_urem:
1848 case lltok::kw_srem:
1849 case lltok::kw_frem: {
1850 unsigned Opc = Lex.getUIntVal();
1851 Constant *Val0, *Val1;
1853 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
1854 ParseGlobalTypeAndValue(Val0) ||
1855 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
1856 ParseGlobalTypeAndValue(Val1) ||
1857 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
1859 if (Val0->getType() != Val1->getType())
1860 return Error(ID.Loc, "operands of constexpr must have same type");
1861 if (!Val0->getType()->isIntOrIntVector() &&
1862 !Val0->getType()->isFPOrFPVector())
1863 return Error(ID.Loc,"constexpr requires integer, fp, or vector operands");
1864 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
1865 ID.Kind = ValID::t_Constant;
1869 // Logical Operations
1871 case lltok::kw_lshr:
1872 case lltok::kw_ashr:
1875 case lltok::kw_xor: {
1876 unsigned Opc = Lex.getUIntVal();
1877 Constant *Val0, *Val1;
1879 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
1880 ParseGlobalTypeAndValue(Val0) ||
1881 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
1882 ParseGlobalTypeAndValue(Val1) ||
1883 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
1885 if (Val0->getType() != Val1->getType())
1886 return Error(ID.Loc, "operands of constexpr must have same type");
1887 if (!Val0->getType()->isIntOrIntVector())
1888 return Error(ID.Loc,
1889 "constexpr requires integer or integer vector operands");
1890 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
1891 ID.Kind = ValID::t_Constant;
1895 case lltok::kw_getelementptr:
1896 case lltok::kw_shufflevector:
1897 case lltok::kw_insertelement:
1898 case lltok::kw_extractelement:
1899 case lltok::kw_select: {
1900 unsigned Opc = Lex.getUIntVal();
1901 SmallVector<Constant*, 16> Elts;
1903 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
1904 ParseGlobalValueVector(Elts) ||
1905 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
1908 if (Opc == Instruction::GetElementPtr) {
1909 if (Elts.size() == 0 || !isa<PointerType>(Elts[0]->getType()))
1910 return Error(ID.Loc, "getelementptr requires pointer operand");
1912 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(),
1913 (Value**)&Elts[1], Elts.size()-1))
1914 return Error(ID.Loc, "invalid indices for getelementptr");
1915 ID.ConstantVal = ConstantExpr::getGetElementPtr(Elts[0],
1916 &Elts[1], Elts.size()-1);
1917 } else if (Opc == Instruction::Select) {
1918 if (Elts.size() != 3)
1919 return Error(ID.Loc, "expected three operands to select");
1920 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
1922 return Error(ID.Loc, Reason);
1923 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
1924 } else if (Opc == Instruction::ShuffleVector) {
1925 if (Elts.size() != 3)
1926 return Error(ID.Loc, "expected three operands to shufflevector");
1927 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
1928 return Error(ID.Loc, "invalid operands to shufflevector");
1929 ID.ConstantVal = ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
1930 } else if (Opc == Instruction::ExtractElement) {
1931 if (Elts.size() != 2)
1932 return Error(ID.Loc, "expected two operands to extractelement");
1933 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
1934 return Error(ID.Loc, "invalid extractelement operands");
1935 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
1937 assert(Opc == Instruction::InsertElement && "Unknown opcode");
1938 if (Elts.size() != 3)
1939 return Error(ID.Loc, "expected three operands to insertelement");
1940 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
1941 return Error(ID.Loc, "invalid insertelement operands");
1942 ID.ConstantVal = ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
1945 ID.Kind = ValID::t_Constant;
1954 /// ParseGlobalValue - Parse a global value with the specified type.
1955 bool LLParser::ParseGlobalValue(const Type *Ty, Constant *&V) {
1958 return ParseValID(ID) ||
1959 ConvertGlobalValIDToValue(Ty, ID, V);
1962 /// ConvertGlobalValIDToValue - Apply a type to a ValID to get a fully resolved
1964 bool LLParser::ConvertGlobalValIDToValue(const Type *Ty, ValID &ID,
1966 if (isa<FunctionType>(Ty))
1967 return Error(ID.Loc, "functions are not values, refer to them as pointers");
1970 default: assert(0 && "Unknown ValID!");
1971 case ValID::t_LocalID:
1972 case ValID::t_LocalName:
1973 return Error(ID.Loc, "invalid use of function-local name");
1974 case ValID::t_InlineAsm:
1975 return Error(ID.Loc, "inline asm can only be an operand of call/invoke");
1976 case ValID::t_GlobalName:
1977 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
1979 case ValID::t_GlobalID:
1980 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
1982 case ValID::t_APSInt:
1983 if (!isa<IntegerType>(Ty))
1984 return Error(ID.Loc, "integer constant must have integer type");
1985 ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
1986 V = ConstantInt::get(ID.APSIntVal);
1988 case ValID::t_APFloat:
1989 if (!Ty->isFloatingPoint() ||
1990 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
1991 return Error(ID.Loc, "floating point constant invalid for type");
1993 // The lexer has no type info, so builds all float and double FP constants
1994 // as double. Fix this here. Long double does not need this.
1995 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble &&
1996 Ty == Type::FloatTy) {
1998 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
2001 V = ConstantFP::get(ID.APFloatVal);
2003 if (V->getType() != Ty)
2004 return Error(ID.Loc, "floating point constant does not have type '" +
2005 Ty->getDescription() + "'");
2009 if (!isa<PointerType>(Ty))
2010 return Error(ID.Loc, "null must be a pointer type");
2011 V = ConstantPointerNull::get(cast<PointerType>(Ty));
2013 case ValID::t_Undef:
2014 // FIXME: LabelTy should not be a first-class type.
2015 if ((!Ty->isFirstClassType() || Ty == Type::LabelTy) &&
2016 !isa<OpaqueType>(Ty))
2017 return Error(ID.Loc, "invalid type for undef constant");
2018 V = UndefValue::get(Ty);
2020 case ValID::t_EmptyArray:
2021 if (!isa<ArrayType>(Ty) || cast<ArrayType>(Ty)->getNumElements() != 0)
2022 return Error(ID.Loc, "invalid empty array initializer");
2023 V = UndefValue::get(Ty);
2026 // FIXME: LabelTy should not be a first-class type.
2027 if (!Ty->isFirstClassType() || Ty == Type::LabelTy)
2028 return Error(ID.Loc, "invalid type for null constant");
2029 V = Constant::getNullValue(Ty);
2031 case ValID::t_Constant:
2032 if (ID.ConstantVal->getType() != Ty)
2033 return Error(ID.Loc, "constant expression type mismatch");
2039 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2040 PATypeHolder Type(Type::VoidTy);
2041 return ParseType(Type) ||
2042 ParseGlobalValue(Type, V);
2045 /// ParseGlobalValueVector
2047 /// ::= TypeAndValue (',' TypeAndValue)*
2048 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts) {
2050 if (Lex.getKind() == lltok::rbrace ||
2051 Lex.getKind() == lltok::rsquare ||
2052 Lex.getKind() == lltok::greater ||
2053 Lex.getKind() == lltok::rparen)
2057 if (ParseGlobalTypeAndValue(C)) return true;
2060 while (EatIfPresent(lltok::comma)) {
2061 if (ParseGlobalTypeAndValue(C)) return true;
2069 //===----------------------------------------------------------------------===//
2070 // Function Parsing.
2071 //===----------------------------------------------------------------------===//
2073 bool LLParser::ConvertValIDToValue(const Type *Ty, ValID &ID, Value *&V,
2074 PerFunctionState &PFS) {
2075 if (ID.Kind == ValID::t_LocalID)
2076 V = PFS.GetVal(ID.UIntVal, Ty, ID.Loc);
2077 else if (ID.Kind == ValID::t_LocalName)
2078 V = PFS.GetVal(ID.StrVal, Ty, ID.Loc);
2079 else if (ID.Kind == ValID::t_InlineAsm) {
2080 const PointerType *PTy = dyn_cast<PointerType>(Ty);
2081 const FunctionType *FTy =
2082 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
2083 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
2084 return Error(ID.Loc, "invalid type for inline asm constraint string");
2085 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal);
2089 if (ConvertGlobalValIDToValue(Ty, ID, C)) return true;
2097 bool LLParser::ParseValue(const Type *Ty, Value *&V, PerFunctionState &PFS) {
2100 return ParseValID(ID) ||
2101 ConvertValIDToValue(Ty, ID, V, PFS);
2104 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState &PFS) {
2105 PATypeHolder T(Type::VoidTy);
2106 return ParseType(T) ||
2107 ParseValue(T, V, PFS);
2111 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
2112 /// Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
2113 /// OptionalAlign OptGC
2114 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
2115 // Parse the linkage.
2116 LocTy LinkageLoc = Lex.getLoc();
2119 unsigned Visibility, CC, RetAttrs;
2120 PATypeHolder RetType(Type::VoidTy);
2121 LocTy RetTypeLoc = Lex.getLoc();
2122 if (ParseOptionalLinkage(Linkage) ||
2123 ParseOptionalVisibility(Visibility) ||
2124 ParseOptionalCallingConv(CC) ||
2125 ParseOptionalAttrs(RetAttrs, 1) ||
2126 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
2129 // Verify that the linkage is ok.
2130 switch ((GlobalValue::LinkageTypes)Linkage) {
2131 case GlobalValue::ExternalLinkage:
2132 break; // always ok.
2133 case GlobalValue::DLLImportLinkage:
2134 case GlobalValue::ExternalWeakLinkage:
2136 return Error(LinkageLoc, "invalid linkage for function definition");
2138 case GlobalValue::PrivateLinkage:
2139 case GlobalValue::InternalLinkage:
2140 case GlobalValue::AvailableExternallyLinkage:
2141 case GlobalValue::LinkOnceAnyLinkage:
2142 case GlobalValue::LinkOnceODRLinkage:
2143 case GlobalValue::WeakAnyLinkage:
2144 case GlobalValue::WeakODRLinkage:
2145 case GlobalValue::DLLExportLinkage:
2147 return Error(LinkageLoc, "invalid linkage for function declaration");
2149 case GlobalValue::AppendingLinkage:
2150 case GlobalValue::GhostLinkage:
2151 case GlobalValue::CommonLinkage:
2152 return Error(LinkageLoc, "invalid function linkage type");
2155 if (!FunctionType::isValidReturnType(RetType) ||
2156 isa<OpaqueType>(RetType))
2157 return Error(RetTypeLoc, "invalid function return type");
2159 LocTy NameLoc = Lex.getLoc();
2161 std::string FunctionName;
2162 if (Lex.getKind() == lltok::GlobalVar) {
2163 FunctionName = Lex.getStrVal();
2164 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
2165 unsigned NameID = Lex.getUIntVal();
2167 if (NameID != NumberedVals.size())
2168 return TokError("function expected to be numbered '%" +
2169 utostr(NumberedVals.size()) + "'");
2171 return TokError("expected function name");
2176 if (Lex.getKind() != lltok::lparen)
2177 return TokError("expected '(' in function argument list");
2179 std::vector<ArgInfo> ArgList;
2182 std::string Section;
2186 if (ParseArgumentList(ArgList, isVarArg, false) ||
2187 ParseOptionalAttrs(FuncAttrs, 2) ||
2188 (EatIfPresent(lltok::kw_section) &&
2189 ParseStringConstant(Section)) ||
2190 ParseOptionalAlignment(Alignment) ||
2191 (EatIfPresent(lltok::kw_gc) &&
2192 ParseStringConstant(GC)))
2195 // If the alignment was parsed as an attribute, move to the alignment field.
2196 if (FuncAttrs & Attribute::Alignment) {
2197 Alignment = Attribute::getAlignmentFromAttrs(FuncAttrs);
2198 FuncAttrs &= ~Attribute::Alignment;
2201 // Okay, if we got here, the function is syntactically valid. Convert types
2202 // and do semantic checks.
2203 std::vector<const Type*> ParamTypeList;
2204 SmallVector<AttributeWithIndex, 8> Attrs;
2205 // FIXME : In 3.0, stop accepting zext, sext and inreg as optional function
2207 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
2208 if (FuncAttrs & ObsoleteFuncAttrs) {
2209 RetAttrs |= FuncAttrs & ObsoleteFuncAttrs;
2210 FuncAttrs &= ~ObsoleteFuncAttrs;
2213 if (RetAttrs != Attribute::None)
2214 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
2216 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2217 ParamTypeList.push_back(ArgList[i].Type);
2218 if (ArgList[i].Attrs != Attribute::None)
2219 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
2222 if (FuncAttrs != Attribute::None)
2223 Attrs.push_back(AttributeWithIndex::get(~0, FuncAttrs));
2225 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
2227 if (PAL.paramHasAttr(1, Attribute::StructRet) &&
2228 RetType != Type::VoidTy)
2229 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
2231 const FunctionType *FT = FunctionType::get(RetType, ParamTypeList, isVarArg);
2232 const PointerType *PFT = PointerType::getUnqual(FT);
2235 if (!FunctionName.empty()) {
2236 // If this was a definition of a forward reference, remove the definition
2237 // from the forward reference table and fill in the forward ref.
2238 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
2239 ForwardRefVals.find(FunctionName);
2240 if (FRVI != ForwardRefVals.end()) {
2241 Fn = M->getFunction(FunctionName);
2242 ForwardRefVals.erase(FRVI);
2243 } else if ((Fn = M->getFunction(FunctionName))) {
2244 // If this function already exists in the symbol table, then it is
2245 // multiply defined. We accept a few cases for old backwards compat.
2246 // FIXME: Remove this stuff for LLVM 3.0.
2247 if (Fn->getType() != PFT || Fn->getAttributes() != PAL ||
2248 (!Fn->isDeclaration() && isDefine)) {
2249 // If the redefinition has different type or different attributes,
2250 // reject it. If both have bodies, reject it.
2251 return Error(NameLoc, "invalid redefinition of function '" +
2252 FunctionName + "'");
2253 } else if (Fn->isDeclaration()) {
2254 // Make sure to strip off any argument names so we can't get conflicts.
2255 for (Function::arg_iterator AI = Fn->arg_begin(), AE = Fn->arg_end();
2261 } else if (FunctionName.empty()) {
2262 // If this is a definition of a forward referenced function, make sure the
2264 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
2265 = ForwardRefValIDs.find(NumberedVals.size());
2266 if (I != ForwardRefValIDs.end()) {
2267 Fn = cast<Function>(I->second.first);
2268 if (Fn->getType() != PFT)
2269 return Error(NameLoc, "type of definition and forward reference of '@" +
2270 utostr(NumberedVals.size()) +"' disagree");
2271 ForwardRefValIDs.erase(I);
2276 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
2277 else // Move the forward-reference to the correct spot in the module.
2278 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
2280 if (FunctionName.empty())
2281 NumberedVals.push_back(Fn);
2283 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
2284 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
2285 Fn->setCallingConv(CC);
2286 Fn->setAttributes(PAL);
2287 Fn->setAlignment(Alignment);
2288 Fn->setSection(Section);
2289 if (!GC.empty()) Fn->setGC(GC.c_str());
2291 // Add all of the arguments we parsed to the function.
2292 Function::arg_iterator ArgIt = Fn->arg_begin();
2293 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
2294 // If the argument has a name, insert it into the argument symbol table.
2295 if (ArgList[i].Name.empty()) continue;
2297 // Set the name, if it conflicted, it will be auto-renamed.
2298 ArgIt->setName(ArgList[i].Name);
2300 if (ArgIt->getNameStr() != ArgList[i].Name)
2301 return Error(ArgList[i].Loc, "redefinition of argument '%" +
2302 ArgList[i].Name + "'");
2309 /// ParseFunctionBody
2310 /// ::= '{' BasicBlock+ '}'
2311 /// ::= 'begin' BasicBlock+ 'end' // FIXME: remove in LLVM 3.0
2313 bool LLParser::ParseFunctionBody(Function &Fn) {
2314 if (Lex.getKind() != lltok::lbrace && Lex.getKind() != lltok::kw_begin)
2315 return TokError("expected '{' in function body");
2316 Lex.Lex(); // eat the {.
2318 PerFunctionState PFS(*this, Fn);
2320 while (Lex.getKind() != lltok::rbrace && Lex.getKind() != lltok::kw_end)
2321 if (ParseBasicBlock(PFS)) return true;
2326 // Verify function is ok.
2327 return PFS.VerifyFunctionComplete();
2331 /// ::= LabelStr? Instruction*
2332 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
2333 // If this basic block starts out with a name, remember it.
2335 LocTy NameLoc = Lex.getLoc();
2336 if (Lex.getKind() == lltok::LabelStr) {
2337 Name = Lex.getStrVal();
2341 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
2342 if (BB == 0) return true;
2344 std::string NameStr;
2346 // Parse the instructions in this block until we get a terminator.
2349 // This instruction may have three possibilities for a name: a) none
2350 // specified, b) name specified "%foo =", c) number specified: "%4 =".
2351 LocTy NameLoc = Lex.getLoc();
2355 if (Lex.getKind() == lltok::LocalVarID) {
2356 NameID = Lex.getUIntVal();
2358 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
2360 } else if (Lex.getKind() == lltok::LocalVar ||
2361 // FIXME: REMOVE IN LLVM 3.0
2362 Lex.getKind() == lltok::StringConstant) {
2363 NameStr = Lex.getStrVal();
2365 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
2369 if (ParseInstruction(Inst, BB, PFS)) return true;
2371 BB->getInstList().push_back(Inst);
2373 // Set the name on the instruction.
2374 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
2375 } while (!isa<TerminatorInst>(Inst));
2380 //===----------------------------------------------------------------------===//
2381 // Instruction Parsing.
2382 //===----------------------------------------------------------------------===//
2384 /// ParseInstruction - Parse one of the many different instructions.
2386 bool LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
2387 PerFunctionState &PFS) {
2388 lltok::Kind Token = Lex.getKind();
2389 if (Token == lltok::Eof)
2390 return TokError("found end of file when expecting more instructions");
2391 LocTy Loc = Lex.getLoc();
2392 unsigned KeywordVal = Lex.getUIntVal();
2393 Lex.Lex(); // Eat the keyword.
2396 default: return Error(Loc, "expected instruction opcode");
2397 // Terminator Instructions.
2398 case lltok::kw_unwind: Inst = new UnwindInst(); return false;
2399 case lltok::kw_unreachable: Inst = new UnreachableInst(); return false;
2400 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
2401 case lltok::kw_br: return ParseBr(Inst, PFS);
2402 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
2403 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
2404 // Binary Operators.
2408 // API compatibility: Accept either integer or floating-point types.
2409 return ParseArithmetic(Inst, PFS, KeywordVal, 0);
2410 case lltok::kw_fadd:
2411 case lltok::kw_fsub:
2412 case lltok::kw_fmul: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
2414 case lltok::kw_udiv:
2415 case lltok::kw_sdiv:
2416 case lltok::kw_urem:
2417 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
2418 case lltok::kw_fdiv:
2419 case lltok::kw_frem: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
2421 case lltok::kw_lshr:
2422 case lltok::kw_ashr:
2425 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
2426 case lltok::kw_icmp:
2427 case lltok::kw_fcmp:
2428 case lltok::kw_vicmp:
2429 case lltok::kw_vfcmp: return ParseCompare(Inst, PFS, KeywordVal);
2431 case lltok::kw_trunc:
2432 case lltok::kw_zext:
2433 case lltok::kw_sext:
2434 case lltok::kw_fptrunc:
2435 case lltok::kw_fpext:
2436 case lltok::kw_bitcast:
2437 case lltok::kw_uitofp:
2438 case lltok::kw_sitofp:
2439 case lltok::kw_fptoui:
2440 case lltok::kw_fptosi:
2441 case lltok::kw_inttoptr:
2442 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
2444 case lltok::kw_select: return ParseSelect(Inst, PFS);
2445 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
2446 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
2447 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
2448 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
2449 case lltok::kw_phi: return ParsePHI(Inst, PFS);
2450 case lltok::kw_call: return ParseCall(Inst, PFS, false);
2451 case lltok::kw_tail: return ParseCall(Inst, PFS, true);
2453 case lltok::kw_alloca:
2454 case lltok::kw_malloc: return ParseAlloc(Inst, PFS, KeywordVal);
2455 case lltok::kw_free: return ParseFree(Inst, PFS);
2456 case lltok::kw_load: return ParseLoad(Inst, PFS, false);
2457 case lltok::kw_store: return ParseStore(Inst, PFS, false);
2458 case lltok::kw_volatile:
2459 if (EatIfPresent(lltok::kw_load))
2460 return ParseLoad(Inst, PFS, true);
2461 else if (EatIfPresent(lltok::kw_store))
2462 return ParseStore(Inst, PFS, true);
2464 return TokError("expected 'load' or 'store'");
2465 case lltok::kw_getresult: return ParseGetResult(Inst, PFS);
2466 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
2467 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
2468 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
2472 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
2473 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
2474 // FIXME: REMOVE vicmp/vfcmp!
2475 if (Opc == Instruction::FCmp || Opc == Instruction::VFCmp) {
2476 switch (Lex.getKind()) {
2477 default: TokError("expected fcmp predicate (e.g. 'oeq')");
2478 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
2479 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
2480 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
2481 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
2482 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
2483 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
2484 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
2485 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
2486 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
2487 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
2488 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
2489 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
2490 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
2491 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
2492 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
2493 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
2496 switch (Lex.getKind()) {
2497 default: TokError("expected icmp predicate (e.g. 'eq')");
2498 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
2499 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
2500 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
2501 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
2502 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
2503 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
2504 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
2505 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
2506 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
2507 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
2514 //===----------------------------------------------------------------------===//
2515 // Terminator Instructions.
2516 //===----------------------------------------------------------------------===//
2518 /// ParseRet - Parse a return instruction.
2520 /// ::= 'ret' TypeAndValue
2521 /// ::= 'ret' TypeAndValue (',' TypeAndValue)+ [[obsolete: LLVM 3.0]]
2522 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
2523 PerFunctionState &PFS) {
2524 PATypeHolder Ty(Type::VoidTy);
2525 if (ParseType(Ty, true /*void allowed*/)) return true;
2527 if (Ty == Type::VoidTy) {
2528 Inst = ReturnInst::Create();
2533 if (ParseValue(Ty, RV, PFS)) return true;
2535 // The normal case is one return value.
2536 if (Lex.getKind() == lltok::comma) {
2537 // FIXME: LLVM 3.0 remove MRV support for 'ret i32 1, i32 2', requiring use
2538 // of 'ret {i32,i32} {i32 1, i32 2}'
2539 SmallVector<Value*, 8> RVs;
2542 while (EatIfPresent(lltok::comma)) {
2543 if (ParseTypeAndValue(RV, PFS)) return true;
2547 RV = UndefValue::get(PFS.getFunction().getReturnType());
2548 for (unsigned i = 0, e = RVs.size(); i != e; ++i) {
2549 Instruction *I = InsertValueInst::Create(RV, RVs[i], i, "mrv");
2550 BB->getInstList().push_back(I);
2554 Inst = ReturnInst::Create(RV);
2560 /// ::= 'br' TypeAndValue
2561 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
2562 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
2564 Value *Op0, *Op1, *Op2;
2565 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
2567 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
2568 Inst = BranchInst::Create(BB);
2572 if (Op0->getType() != Type::Int1Ty)
2573 return Error(Loc, "branch condition must have 'i1' type");
2575 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
2576 ParseTypeAndValue(Op1, Loc, PFS) ||
2577 ParseToken(lltok::comma, "expected ',' after true destination") ||
2578 ParseTypeAndValue(Op2, Loc2, PFS))
2581 if (!isa<BasicBlock>(Op1))
2582 return Error(Loc, "true destination of branch must be a basic block");
2583 if (!isa<BasicBlock>(Op2))
2584 return Error(Loc2, "true destination of branch must be a basic block");
2586 Inst = BranchInst::Create(cast<BasicBlock>(Op1), cast<BasicBlock>(Op2), Op0);
2592 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
2594 /// ::= (TypeAndValue ',' TypeAndValue)*
2595 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
2596 LocTy CondLoc, BBLoc;
2597 Value *Cond, *DefaultBB;
2598 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
2599 ParseToken(lltok::comma, "expected ',' after switch condition") ||
2600 ParseTypeAndValue(DefaultBB, BBLoc, PFS) ||
2601 ParseToken(lltok::lsquare, "expected '[' with switch table"))
2604 if (!isa<IntegerType>(Cond->getType()))
2605 return Error(CondLoc, "switch condition must have integer type");
2606 if (!isa<BasicBlock>(DefaultBB))
2607 return Error(BBLoc, "default destination must be a basic block");
2609 // Parse the jump table pairs.
2610 SmallPtrSet<Value*, 32> SeenCases;
2611 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
2612 while (Lex.getKind() != lltok::rsquare) {
2613 Value *Constant, *DestBB;
2615 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
2616 ParseToken(lltok::comma, "expected ',' after case value") ||
2617 ParseTypeAndValue(DestBB, BBLoc, PFS))
2620 if (!SeenCases.insert(Constant))
2621 return Error(CondLoc, "duplicate case value in switch");
2622 if (!isa<ConstantInt>(Constant))
2623 return Error(CondLoc, "case value is not a constant integer");
2624 if (!isa<BasicBlock>(DestBB))
2625 return Error(BBLoc, "case destination is not a basic block");
2627 Table.push_back(std::make_pair(cast<ConstantInt>(Constant),
2628 cast<BasicBlock>(DestBB)));
2631 Lex.Lex(); // Eat the ']'.
2633 SwitchInst *SI = SwitchInst::Create(Cond, cast<BasicBlock>(DefaultBB),
2635 for (unsigned i = 0, e = Table.size(); i != e; ++i)
2636 SI->addCase(Table[i].first, Table[i].second);
2642 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
2643 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
2644 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
2645 LocTy CallLoc = Lex.getLoc();
2646 unsigned CC, RetAttrs, FnAttrs;
2647 PATypeHolder RetType(Type::VoidTy);
2650 SmallVector<ParamInfo, 16> ArgList;
2652 Value *NormalBB, *UnwindBB;
2653 if (ParseOptionalCallingConv(CC) ||
2654 ParseOptionalAttrs(RetAttrs, 1) ||
2655 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
2656 ParseValID(CalleeID) ||
2657 ParseParameterList(ArgList, PFS) ||
2658 ParseOptionalAttrs(FnAttrs, 2) ||
2659 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
2660 ParseTypeAndValue(NormalBB, PFS) ||
2661 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
2662 ParseTypeAndValue(UnwindBB, PFS))
2665 if (!isa<BasicBlock>(NormalBB))
2666 return Error(CallLoc, "normal destination is not a basic block");
2667 if (!isa<BasicBlock>(UnwindBB))
2668 return Error(CallLoc, "unwind destination is not a basic block");
2670 // If RetType is a non-function pointer type, then this is the short syntax
2671 // for the call, which means that RetType is just the return type. Infer the
2672 // rest of the function argument types from the arguments that are present.
2673 const PointerType *PFTy = 0;
2674 const FunctionType *Ty = 0;
2675 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
2676 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
2677 // Pull out the types of all of the arguments...
2678 std::vector<const Type*> ParamTypes;
2679 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
2680 ParamTypes.push_back(ArgList[i].V->getType());
2682 if (!FunctionType::isValidReturnType(RetType))
2683 return Error(RetTypeLoc, "Invalid result type for LLVM function");
2685 Ty = FunctionType::get(RetType, ParamTypes, false);
2686 PFTy = PointerType::getUnqual(Ty);
2689 // Look up the callee.
2691 if (ConvertValIDToValue(PFTy, CalleeID, Callee, PFS)) return true;
2693 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
2694 // function attributes.
2695 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
2696 if (FnAttrs & ObsoleteFuncAttrs) {
2697 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
2698 FnAttrs &= ~ObsoleteFuncAttrs;
2701 // Set up the Attributes for the function.
2702 SmallVector<AttributeWithIndex, 8> Attrs;
2703 if (RetAttrs != Attribute::None)
2704 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
2706 SmallVector<Value*, 8> Args;
2708 // Loop through FunctionType's arguments and ensure they are specified
2709 // correctly. Also, gather any parameter attributes.
2710 FunctionType::param_iterator I = Ty->param_begin();
2711 FunctionType::param_iterator E = Ty->param_end();
2712 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2713 const Type *ExpectedTy = 0;
2716 } else if (!Ty->isVarArg()) {
2717 return Error(ArgList[i].Loc, "too many arguments specified");
2720 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
2721 return Error(ArgList[i].Loc, "argument is not of expected type '" +
2722 ExpectedTy->getDescription() + "'");
2723 Args.push_back(ArgList[i].V);
2724 if (ArgList[i].Attrs != Attribute::None)
2725 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
2729 return Error(CallLoc, "not enough parameters specified for call");
2731 if (FnAttrs != Attribute::None)
2732 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
2734 // Finish off the Attributes and check them
2735 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
2737 InvokeInst *II = InvokeInst::Create(Callee, cast<BasicBlock>(NormalBB),
2738 cast<BasicBlock>(UnwindBB),
2739 Args.begin(), Args.end());
2740 II->setCallingConv(CC);
2741 II->setAttributes(PAL);
2748 //===----------------------------------------------------------------------===//
2749 // Binary Operators.
2750 //===----------------------------------------------------------------------===//
2753 /// ::= ArithmeticOps TypeAndValue ',' Value
2755 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
2756 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
2757 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
2758 unsigned Opc, unsigned OperandType) {
2759 LocTy Loc; Value *LHS, *RHS;
2760 if (ParseTypeAndValue(LHS, Loc, PFS) ||
2761 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
2762 ParseValue(LHS->getType(), RHS, PFS))
2766 switch (OperandType) {
2767 default: assert(0 && "Unknown operand type!");
2768 case 0: // int or FP.
2769 Valid = LHS->getType()->isIntOrIntVector() ||
2770 LHS->getType()->isFPOrFPVector();
2772 case 1: Valid = LHS->getType()->isIntOrIntVector(); break;
2773 case 2: Valid = LHS->getType()->isFPOrFPVector(); break;
2777 return Error(Loc, "invalid operand type for instruction");
2779 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
2784 /// ::= ArithmeticOps TypeAndValue ',' Value {
2785 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
2787 LocTy Loc; Value *LHS, *RHS;
2788 if (ParseTypeAndValue(LHS, Loc, PFS) ||
2789 ParseToken(lltok::comma, "expected ',' in logical operation") ||
2790 ParseValue(LHS->getType(), RHS, PFS))
2793 if (!LHS->getType()->isIntOrIntVector())
2794 return Error(Loc,"instruction requires integer or integer vector operands");
2796 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
2802 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
2803 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
2804 /// ::= 'vicmp' IPredicates TypeAndValue ',' Value
2805 /// ::= 'vfcmp' FPredicates TypeAndValue ',' Value
2806 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
2808 // Parse the integer/fp comparison predicate.
2812 if (ParseCmpPredicate(Pred, Opc) ||
2813 ParseTypeAndValue(LHS, Loc, PFS) ||
2814 ParseToken(lltok::comma, "expected ',' after compare value") ||
2815 ParseValue(LHS->getType(), RHS, PFS))
2818 if (Opc == Instruction::FCmp) {
2819 if (!LHS->getType()->isFPOrFPVector())
2820 return Error(Loc, "fcmp requires floating point operands");
2821 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
2822 } else if (Opc == Instruction::ICmp) {
2823 if (!LHS->getType()->isIntOrIntVector() &&
2824 !isa<PointerType>(LHS->getType()))
2825 return Error(Loc, "icmp requires integer operands");
2826 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
2827 } else if (Opc == Instruction::VFCmp) {
2828 if (!LHS->getType()->isFPOrFPVector() || !isa<VectorType>(LHS->getType()))
2829 return Error(Loc, "vfcmp requires vector floating point operands");
2830 Inst = new VFCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
2831 } else if (Opc == Instruction::VICmp) {
2832 if (!LHS->getType()->isIntOrIntVector() || !isa<VectorType>(LHS->getType()))
2833 return Error(Loc, "vicmp requires vector floating point operands");
2834 Inst = new VICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
2839 //===----------------------------------------------------------------------===//
2840 // Other Instructions.
2841 //===----------------------------------------------------------------------===//
2845 /// ::= CastOpc TypeAndValue 'to' Type
2846 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
2848 LocTy Loc; Value *Op;
2849 PATypeHolder DestTy(Type::VoidTy);
2850 if (ParseTypeAndValue(Op, Loc, PFS) ||
2851 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
2855 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
2856 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
2857 return Error(Loc, "invalid cast opcode for cast from '" +
2858 Op->getType()->getDescription() + "' to '" +
2859 DestTy->getDescription() + "'");
2861 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
2866 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
2867 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
2869 Value *Op0, *Op1, *Op2;
2870 if (ParseTypeAndValue(Op0, Loc, PFS) ||
2871 ParseToken(lltok::comma, "expected ',' after select condition") ||
2872 ParseTypeAndValue(Op1, PFS) ||
2873 ParseToken(lltok::comma, "expected ',' after select value") ||
2874 ParseTypeAndValue(Op2, PFS))
2877 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
2878 return Error(Loc, Reason);
2880 Inst = SelectInst::Create(Op0, Op1, Op2);
2885 /// ::= 'va_arg' TypeAndValue ',' Type
2886 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
2888 PATypeHolder EltTy(Type::VoidTy);
2890 if (ParseTypeAndValue(Op, PFS) ||
2891 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
2892 ParseType(EltTy, TypeLoc))
2895 if (!EltTy->isFirstClassType())
2896 return Error(TypeLoc, "va_arg requires operand with first class type");
2898 Inst = new VAArgInst(Op, EltTy);
2902 /// ParseExtractElement
2903 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
2904 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
2907 if (ParseTypeAndValue(Op0, Loc, PFS) ||
2908 ParseToken(lltok::comma, "expected ',' after extract value") ||
2909 ParseTypeAndValue(Op1, PFS))
2912 if (!ExtractElementInst::isValidOperands(Op0, Op1))
2913 return Error(Loc, "invalid extractelement operands");
2915 Inst = new ExtractElementInst(Op0, Op1);
2919 /// ParseInsertElement
2920 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
2921 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
2923 Value *Op0, *Op1, *Op2;
2924 if (ParseTypeAndValue(Op0, Loc, PFS) ||
2925 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
2926 ParseTypeAndValue(Op1, PFS) ||
2927 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
2928 ParseTypeAndValue(Op2, PFS))
2931 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
2932 return Error(Loc, "invalid extractelement operands");
2934 Inst = InsertElementInst::Create(Op0, Op1, Op2);
2938 /// ParseShuffleVector
2939 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
2940 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
2942 Value *Op0, *Op1, *Op2;
2943 if (ParseTypeAndValue(Op0, Loc, PFS) ||
2944 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
2945 ParseTypeAndValue(Op1, PFS) ||
2946 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
2947 ParseTypeAndValue(Op2, PFS))
2950 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
2951 return Error(Loc, "invalid extractelement operands");
2953 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
2958 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Valueß ']')*
2959 bool LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
2960 PATypeHolder Ty(Type::VoidTy);
2962 LocTy TypeLoc = Lex.getLoc();
2964 if (ParseType(Ty) ||
2965 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
2966 ParseValue(Ty, Op0, PFS) ||
2967 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
2968 ParseValue(Type::LabelTy, Op1, PFS) ||
2969 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
2972 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
2974 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
2976 if (!EatIfPresent(lltok::comma))
2979 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
2980 ParseValue(Ty, Op0, PFS) ||
2981 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
2982 ParseValue(Type::LabelTy, Op1, PFS) ||
2983 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
2987 if (!Ty->isFirstClassType())
2988 return Error(TypeLoc, "phi node must have first class type");
2990 PHINode *PN = PHINode::Create(Ty);
2991 PN->reserveOperandSpace(PHIVals.size());
2992 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
2993 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
2999 /// ::= 'tail'? 'call' OptionalCallingConv OptionalAttrs Type Value
3000 /// ParameterList OptionalAttrs
3001 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
3003 unsigned CC, RetAttrs, FnAttrs;
3004 PATypeHolder RetType(Type::VoidTy);
3007 SmallVector<ParamInfo, 16> ArgList;
3008 LocTy CallLoc = Lex.getLoc();
3010 if ((isTail && ParseToken(lltok::kw_call, "expected 'tail call'")) ||
3011 ParseOptionalCallingConv(CC) ||
3012 ParseOptionalAttrs(RetAttrs, 1) ||
3013 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3014 ParseValID(CalleeID) ||
3015 ParseParameterList(ArgList, PFS) ||
3016 ParseOptionalAttrs(FnAttrs, 2))
3019 // If RetType is a non-function pointer type, then this is the short syntax
3020 // for the call, which means that RetType is just the return type. Infer the
3021 // rest of the function argument types from the arguments that are present.
3022 const PointerType *PFTy = 0;
3023 const FunctionType *Ty = 0;
3024 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3025 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3026 // Pull out the types of all of the arguments...
3027 std::vector<const Type*> ParamTypes;
3028 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3029 ParamTypes.push_back(ArgList[i].V->getType());
3031 if (!FunctionType::isValidReturnType(RetType))
3032 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3034 Ty = FunctionType::get(RetType, ParamTypes, false);
3035 PFTy = PointerType::getUnqual(Ty);
3038 // Look up the callee.
3040 if (ConvertValIDToValue(PFTy, CalleeID, Callee, PFS)) return true;
3042 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
3043 // function attributes.
3044 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
3045 if (FnAttrs & ObsoleteFuncAttrs) {
3046 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
3047 FnAttrs &= ~ObsoleteFuncAttrs;
3050 // Set up the Attributes for the function.
3051 SmallVector<AttributeWithIndex, 8> Attrs;
3052 if (RetAttrs != Attribute::None)
3053 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3055 SmallVector<Value*, 8> Args;
3057 // Loop through FunctionType's arguments and ensure they are specified
3058 // correctly. Also, gather any parameter attributes.
3059 FunctionType::param_iterator I = Ty->param_begin();
3060 FunctionType::param_iterator E = Ty->param_end();
3061 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3062 const Type *ExpectedTy = 0;
3065 } else if (!Ty->isVarArg()) {
3066 return Error(ArgList[i].Loc, "too many arguments specified");
3069 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3070 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3071 ExpectedTy->getDescription() + "'");
3072 Args.push_back(ArgList[i].V);
3073 if (ArgList[i].Attrs != Attribute::None)
3074 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3078 return Error(CallLoc, "not enough parameters specified for call");
3080 if (FnAttrs != Attribute::None)
3081 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3083 // Finish off the Attributes and check them
3084 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3086 CallInst *CI = CallInst::Create(Callee, Args.begin(), Args.end());
3087 CI->setTailCall(isTail);
3088 CI->setCallingConv(CC);
3089 CI->setAttributes(PAL);
3094 //===----------------------------------------------------------------------===//
3095 // Memory Instructions.
3096 //===----------------------------------------------------------------------===//
3099 /// ::= 'malloc' Type (',' TypeAndValue)? (',' OptionalAlignment)?
3100 /// ::= 'alloca' Type (',' TypeAndValue)? (',' OptionalAlignment)?
3101 bool LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS,
3103 PATypeHolder Ty(Type::VoidTy);
3106 unsigned Alignment = 0;
3107 if (ParseType(Ty)) return true;
3109 if (EatIfPresent(lltok::comma)) {
3110 if (Lex.getKind() == lltok::kw_align) {
3111 if (ParseOptionalAlignment(Alignment)) return true;
3112 } else if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
3113 ParseOptionalCommaAlignment(Alignment)) {
3118 if (Size && Size->getType() != Type::Int32Ty)
3119 return Error(SizeLoc, "element count must be i32");
3121 if (Opc == Instruction::Malloc)
3122 Inst = new MallocInst(Ty, Size, Alignment);
3124 Inst = new AllocaInst(Ty, Size, Alignment);
3129 /// ::= 'free' TypeAndValue
3130 bool LLParser::ParseFree(Instruction *&Inst, PerFunctionState &PFS) {
3131 Value *Val; LocTy Loc;
3132 if (ParseTypeAndValue(Val, Loc, PFS)) return true;
3133 if (!isa<PointerType>(Val->getType()))
3134 return Error(Loc, "operand to free must be a pointer");
3135 Inst = new FreeInst(Val);
3140 /// ::= 'volatile'? 'load' TypeAndValue (',' 'align' uint)?
3141 bool LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS,
3143 Value *Val; LocTy Loc;
3145 if (ParseTypeAndValue(Val, Loc, PFS) ||
3146 ParseOptionalCommaAlignment(Alignment))
3149 if (!isa<PointerType>(Val->getType()) ||
3150 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
3151 return Error(Loc, "load operand must be a pointer to a first class type");
3153 Inst = new LoadInst(Val, "", isVolatile, Alignment);
3158 /// ::= 'volatile'? 'store' TypeAndValue ',' TypeAndValue (',' 'align' uint)?
3159 bool LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS,
3161 Value *Val, *Ptr; LocTy Loc, PtrLoc;
3163 if (ParseTypeAndValue(Val, Loc, PFS) ||
3164 ParseToken(lltok::comma, "expected ',' after store operand") ||
3165 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
3166 ParseOptionalCommaAlignment(Alignment))
3169 if (!isa<PointerType>(Ptr->getType()))
3170 return Error(PtrLoc, "store operand must be a pointer");
3171 if (!Val->getType()->isFirstClassType())
3172 return Error(Loc, "store operand must be a first class value");
3173 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
3174 return Error(Loc, "stored value and pointer type do not match");
3176 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment);
3181 /// ::= 'getresult' TypeAndValue ',' uint
3182 /// FIXME: Remove support for getresult in LLVM 3.0
3183 bool LLParser::ParseGetResult(Instruction *&Inst, PerFunctionState &PFS) {
3184 Value *Val; LocTy ValLoc, EltLoc;
3186 if (ParseTypeAndValue(Val, ValLoc, PFS) ||
3187 ParseToken(lltok::comma, "expected ',' after getresult operand") ||
3188 ParseUInt32(Element, EltLoc))
3191 if (!isa<StructType>(Val->getType()) && !isa<ArrayType>(Val->getType()))
3192 return Error(ValLoc, "getresult inst requires an aggregate operand");
3193 if (!ExtractValueInst::getIndexedType(Val->getType(), Element))
3194 return Error(EltLoc, "invalid getresult index for value");
3195 Inst = ExtractValueInst::Create(Val, Element);
3199 /// ParseGetElementPtr
3200 /// ::= 'getelementptr' TypeAndValue (',' TypeAndValue)*
3201 bool LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
3202 Value *Ptr, *Val; LocTy Loc, EltLoc;
3203 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
3205 if (!isa<PointerType>(Ptr->getType()))
3206 return Error(Loc, "base of getelementptr must be a pointer");
3208 SmallVector<Value*, 16> Indices;
3209 while (EatIfPresent(lltok::comma)) {
3210 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
3211 if (!isa<IntegerType>(Val->getType()))
3212 return Error(EltLoc, "getelementptr index must be an integer");
3213 Indices.push_back(Val);
3216 if (!GetElementPtrInst::getIndexedType(Ptr->getType(),
3217 Indices.begin(), Indices.end()))
3218 return Error(Loc, "invalid getelementptr indices");
3219 Inst = GetElementPtrInst::Create(Ptr, Indices.begin(), Indices.end());
3223 /// ParseExtractValue
3224 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
3225 bool LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
3226 Value *Val; LocTy Loc;
3227 SmallVector<unsigned, 4> Indices;
3228 if (ParseTypeAndValue(Val, Loc, PFS) ||
3229 ParseIndexList(Indices))
3232 if (!isa<StructType>(Val->getType()) && !isa<ArrayType>(Val->getType()))
3233 return Error(Loc, "extractvalue operand must be array or struct");
3235 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
3237 return Error(Loc, "invalid indices for extractvalue");
3238 Inst = ExtractValueInst::Create(Val, Indices.begin(), Indices.end());
3242 /// ParseInsertValue
3243 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
3244 bool LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
3245 Value *Val0, *Val1; LocTy Loc0, Loc1;
3246 SmallVector<unsigned, 4> Indices;
3247 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
3248 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
3249 ParseTypeAndValue(Val1, Loc1, PFS) ||
3250 ParseIndexList(Indices))
3253 if (!isa<StructType>(Val0->getType()) && !isa<ArrayType>(Val0->getType()))
3254 return Error(Loc0, "extractvalue operand must be array or struct");
3256 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
3258 return Error(Loc0, "invalid indices for insertvalue");
3259 Inst = InsertValueInst::Create(Val0, Val1, Indices.begin(), Indices.end());
3263 //===----------------------------------------------------------------------===//
3264 // Embedded metadata.
3265 //===----------------------------------------------------------------------===//
3267 /// ParseMDNodeVector
3268 /// ::= Element (',' Element)*
3270 /// ::= 'null' | TypeAndValue
3271 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts) {
3272 assert(Lex.getKind() == lltok::lbrace);
3276 if (Lex.getKind() == lltok::kw_null) {
3281 if (ParseGlobalTypeAndValue(C)) return true;
3285 } while (EatIfPresent(lltok::comma));