1 //===-- LLParser.cpp - Parser Class ---------------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines the parser class for .ll files.
12 //===----------------------------------------------------------------------===//
15 #include "llvm/AutoUpgrade.h"
16 #include "llvm/CallingConv.h"
17 #include "llvm/Constants.h"
18 #include "llvm/DerivedTypes.h"
19 #include "llvm/InlineAsm.h"
20 #include "llvm/Instructions.h"
21 #include "llvm/LLVMContext.h"
22 #include "llvm/Metadata.h"
23 #include "llvm/Module.h"
24 #include "llvm/Operator.h"
25 #include "llvm/ValueSymbolTable.h"
26 #include "llvm/ADT/SmallPtrSet.h"
27 #include "llvm/ADT/StringExtras.h"
28 #include "llvm/Support/ErrorHandling.h"
29 #include "llvm/Support/raw_ostream.h"
33 /// ValID - Represents a reference of a definition of some sort with no type.
34 /// There are several cases where we have to parse the value but where the
35 /// type can depend on later context. This may either be a numeric reference
36 /// or a symbolic (%var) reference. This is just a discriminated union.
39 t_LocalID, t_GlobalID, // ID in UIntVal.
40 t_LocalName, t_GlobalName, // Name in StrVal.
41 t_APSInt, t_APFloat, // Value in APSIntVal/APFloatVal.
42 t_Null, t_Undef, t_Zero, // No value.
43 t_EmptyArray, // No value: []
44 t_Constant, // Value in ConstantVal.
45 t_InlineAsm, // Value in StrVal/StrVal2/UIntVal.
46 t_Metadata // Value in MetadataVal.
51 std::string StrVal, StrVal2;
54 Constant *ConstantVal;
55 MetadataBase *MetadataVal;
56 ValID() : APFloatVal(0.0) {}
60 /// Run: module ::= toplevelentity*
61 bool LLParser::Run() {
65 return ParseTopLevelEntities() ||
66 ValidateEndOfModule();
69 /// ValidateEndOfModule - Do final validity and sanity checks at the end of the
71 bool LLParser::ValidateEndOfModule() {
72 // Update auto-upgraded malloc calls from "autoupgrade_malloc" to "malloc".
74 MallocF->setName("malloc");
75 // If setName() does not set the name to "malloc", then there is already a
76 // declaration of "malloc". In that case, iterate over all calls to MallocF
77 // and get them to call the declared "malloc" instead.
78 if (MallocF->getName() != "malloc") {
79 Function* realMallocF = M->getFunction("malloc");
80 for (User::use_iterator UI = MallocF->use_begin(), UE= MallocF->use_end();
84 if (CallInst *Call = dyn_cast<CallInst>(user))
85 Call->setCalledFunction(realMallocF);
87 if (!realMallocF->doesNotAlias(0)) realMallocF->setDoesNotAlias(0);
88 MallocF->eraseFromParent();
93 if (!ForwardRefTypes.empty())
94 return Error(ForwardRefTypes.begin()->second.second,
95 "use of undefined type named '" +
96 ForwardRefTypes.begin()->first + "'");
97 if (!ForwardRefTypeIDs.empty())
98 return Error(ForwardRefTypeIDs.begin()->second.second,
99 "use of undefined type '%" +
100 utostr(ForwardRefTypeIDs.begin()->first) + "'");
102 if (!ForwardRefVals.empty())
103 return Error(ForwardRefVals.begin()->second.second,
104 "use of undefined value '@" + ForwardRefVals.begin()->first +
107 if (!ForwardRefValIDs.empty())
108 return Error(ForwardRefValIDs.begin()->second.second,
109 "use of undefined value '@" +
110 utostr(ForwardRefValIDs.begin()->first) + "'");
112 if (!ForwardRefMDNodes.empty())
113 return Error(ForwardRefMDNodes.begin()->second.second,
114 "use of undefined metadata '!" +
115 utostr(ForwardRefMDNodes.begin()->first) + "'");
118 // Look for intrinsic functions and CallInst that need to be upgraded
119 for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; )
120 UpgradeCallsToIntrinsic(FI++); // must be post-increment, as we remove
122 // Check debug info intrinsics.
123 CheckDebugInfoIntrinsics(M);
127 //===----------------------------------------------------------------------===//
128 // Top-Level Entities
129 //===----------------------------------------------------------------------===//
131 bool LLParser::ParseTopLevelEntities() {
133 switch (Lex.getKind()) {
134 default: return TokError("expected top-level entity");
135 case lltok::Eof: return false;
136 //case lltok::kw_define:
137 case lltok::kw_declare: if (ParseDeclare()) return true; break;
138 case lltok::kw_define: if (ParseDefine()) return true; break;
139 case lltok::kw_module: if (ParseModuleAsm()) return true; break;
140 case lltok::kw_target: if (ParseTargetDefinition()) return true; break;
141 case lltok::kw_deplibs: if (ParseDepLibs()) return true; break;
142 case lltok::kw_type: if (ParseUnnamedType()) return true; break;
143 case lltok::LocalVarID: if (ParseUnnamedType()) return true; break;
144 case lltok::StringConstant: // FIXME: REMOVE IN LLVM 3.0
145 case lltok::LocalVar: if (ParseNamedType()) return true; break;
146 case lltok::GlobalID: if (ParseUnnamedGlobal()) return true; break;
147 case lltok::GlobalVar: if (ParseNamedGlobal()) return true; break;
148 case lltok::Metadata: if (ParseStandaloneMetadata()) return true; break;
149 case lltok::NamedMD: if (ParseNamedMetadata()) return true; break;
151 // The Global variable production with no name can have many different
152 // optional leading prefixes, the production is:
153 // GlobalVar ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
154 // OptionalAddrSpace ('constant'|'global') ...
155 case lltok::kw_private : // OptionalLinkage
156 case lltok::kw_linker_private: // OptionalLinkage
157 case lltok::kw_internal: // OptionalLinkage
158 case lltok::kw_weak: // OptionalLinkage
159 case lltok::kw_weak_odr: // OptionalLinkage
160 case lltok::kw_linkonce: // OptionalLinkage
161 case lltok::kw_linkonce_odr: // OptionalLinkage
162 case lltok::kw_appending: // OptionalLinkage
163 case lltok::kw_dllexport: // OptionalLinkage
164 case lltok::kw_common: // OptionalLinkage
165 case lltok::kw_dllimport: // OptionalLinkage
166 case lltok::kw_extern_weak: // OptionalLinkage
167 case lltok::kw_external: { // OptionalLinkage
168 unsigned Linkage, Visibility;
169 if (ParseOptionalLinkage(Linkage) ||
170 ParseOptionalVisibility(Visibility) ||
171 ParseGlobal("", SMLoc(), Linkage, true, Visibility))
175 case lltok::kw_default: // OptionalVisibility
176 case lltok::kw_hidden: // OptionalVisibility
177 case lltok::kw_protected: { // OptionalVisibility
179 if (ParseOptionalVisibility(Visibility) ||
180 ParseGlobal("", SMLoc(), 0, false, Visibility))
185 case lltok::kw_thread_local: // OptionalThreadLocal
186 case lltok::kw_addrspace: // OptionalAddrSpace
187 case lltok::kw_constant: // GlobalType
188 case lltok::kw_global: // GlobalType
189 if (ParseGlobal("", SMLoc(), 0, false, 0)) return true;
197 /// ::= 'module' 'asm' STRINGCONSTANT
198 bool LLParser::ParseModuleAsm() {
199 assert(Lex.getKind() == lltok::kw_module);
203 if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
204 ParseStringConstant(AsmStr)) return true;
206 const std::string &AsmSoFar = M->getModuleInlineAsm();
207 if (AsmSoFar.empty())
208 M->setModuleInlineAsm(AsmStr);
210 M->setModuleInlineAsm(AsmSoFar+"\n"+AsmStr);
215 /// ::= 'target' 'triple' '=' STRINGCONSTANT
216 /// ::= 'target' 'datalayout' '=' STRINGCONSTANT
217 bool LLParser::ParseTargetDefinition() {
218 assert(Lex.getKind() == lltok::kw_target);
221 default: return TokError("unknown target property");
222 case lltok::kw_triple:
224 if (ParseToken(lltok::equal, "expected '=' after target triple") ||
225 ParseStringConstant(Str))
227 M->setTargetTriple(Str);
229 case lltok::kw_datalayout:
231 if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
232 ParseStringConstant(Str))
234 M->setDataLayout(Str);
240 /// ::= 'deplibs' '=' '[' ']'
241 /// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
242 bool LLParser::ParseDepLibs() {
243 assert(Lex.getKind() == lltok::kw_deplibs);
245 if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
246 ParseToken(lltok::lsquare, "expected '=' after deplibs"))
249 if (EatIfPresent(lltok::rsquare))
253 if (ParseStringConstant(Str)) return true;
256 while (EatIfPresent(lltok::comma)) {
257 if (ParseStringConstant(Str)) return true;
261 return ParseToken(lltok::rsquare, "expected ']' at end of list");
264 /// ParseUnnamedType:
266 /// ::= LocalVarID '=' 'type' type
267 bool LLParser::ParseUnnamedType() {
268 unsigned TypeID = NumberedTypes.size();
270 // Handle the LocalVarID form.
271 if (Lex.getKind() == lltok::LocalVarID) {
272 if (Lex.getUIntVal() != TypeID)
273 return Error(Lex.getLoc(), "type expected to be numbered '%" +
274 utostr(TypeID) + "'");
275 Lex.Lex(); // eat LocalVarID;
277 if (ParseToken(lltok::equal, "expected '=' after name"))
281 assert(Lex.getKind() == lltok::kw_type);
282 LocTy TypeLoc = Lex.getLoc();
283 Lex.Lex(); // eat kw_type
285 PATypeHolder Ty(Type::getVoidTy(Context));
286 if (ParseType(Ty)) return true;
288 // See if this type was previously referenced.
289 std::map<unsigned, std::pair<PATypeHolder, LocTy> >::iterator
290 FI = ForwardRefTypeIDs.find(TypeID);
291 if (FI != ForwardRefTypeIDs.end()) {
292 if (FI->second.first.get() == Ty)
293 return Error(TypeLoc, "self referential type is invalid");
295 cast<DerivedType>(FI->second.first.get())->refineAbstractTypeTo(Ty);
296 Ty = FI->second.first.get();
297 ForwardRefTypeIDs.erase(FI);
300 NumberedTypes.push_back(Ty);
306 /// ::= LocalVar '=' 'type' type
307 bool LLParser::ParseNamedType() {
308 std::string Name = Lex.getStrVal();
309 LocTy NameLoc = Lex.getLoc();
310 Lex.Lex(); // eat LocalVar.
312 PATypeHolder Ty(Type::getVoidTy(Context));
314 if (ParseToken(lltok::equal, "expected '=' after name") ||
315 ParseToken(lltok::kw_type, "expected 'type' after name") ||
319 // Set the type name, checking for conflicts as we do so.
320 bool AlreadyExists = M->addTypeName(Name, Ty);
321 if (!AlreadyExists) return false;
323 // See if this type is a forward reference. We need to eagerly resolve
324 // types to allow recursive type redefinitions below.
325 std::map<std::string, std::pair<PATypeHolder, LocTy> >::iterator
326 FI = ForwardRefTypes.find(Name);
327 if (FI != ForwardRefTypes.end()) {
328 if (FI->second.first.get() == Ty)
329 return Error(NameLoc, "self referential type is invalid");
331 cast<DerivedType>(FI->second.first.get())->refineAbstractTypeTo(Ty);
332 Ty = FI->second.first.get();
333 ForwardRefTypes.erase(FI);
336 // Inserting a name that is already defined, get the existing name.
337 const Type *Existing = M->getTypeByName(Name);
338 assert(Existing && "Conflict but no matching type?!");
340 // Otherwise, this is an attempt to redefine a type. That's okay if
341 // the redefinition is identical to the original.
342 // FIXME: REMOVE REDEFINITIONS IN LLVM 3.0
343 if (Existing == Ty) return false;
345 // Any other kind of (non-equivalent) redefinition is an error.
346 return Error(NameLoc, "redefinition of type named '" + Name + "' of type '" +
347 Ty->getDescription() + "'");
352 /// ::= 'declare' FunctionHeader
353 bool LLParser::ParseDeclare() {
354 assert(Lex.getKind() == lltok::kw_declare);
358 return ParseFunctionHeader(F, false);
362 /// ::= 'define' FunctionHeader '{' ...
363 bool LLParser::ParseDefine() {
364 assert(Lex.getKind() == lltok::kw_define);
368 return ParseFunctionHeader(F, true) ||
369 ParseFunctionBody(*F);
375 bool LLParser::ParseGlobalType(bool &IsConstant) {
376 if (Lex.getKind() == lltok::kw_constant)
378 else if (Lex.getKind() == lltok::kw_global)
382 return TokError("expected 'global' or 'constant'");
388 /// ParseUnnamedGlobal:
389 /// OptionalVisibility ALIAS ...
390 /// OptionalLinkage OptionalVisibility ... -> global variable
391 /// GlobalID '=' OptionalVisibility ALIAS ...
392 /// GlobalID '=' OptionalLinkage OptionalVisibility ... -> global variable
393 bool LLParser::ParseUnnamedGlobal() {
394 unsigned VarID = NumberedVals.size();
396 LocTy NameLoc = Lex.getLoc();
398 // Handle the GlobalID form.
399 if (Lex.getKind() == lltok::GlobalID) {
400 if (Lex.getUIntVal() != VarID)
401 return Error(Lex.getLoc(), "variable expected to be numbered '%" +
402 utostr(VarID) + "'");
403 Lex.Lex(); // eat GlobalID;
405 if (ParseToken(lltok::equal, "expected '=' after name"))
410 unsigned Linkage, Visibility;
411 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
412 ParseOptionalVisibility(Visibility))
415 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
416 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
417 return ParseAlias(Name, NameLoc, Visibility);
420 /// ParseNamedGlobal:
421 /// GlobalVar '=' OptionalVisibility ALIAS ...
422 /// GlobalVar '=' OptionalLinkage OptionalVisibility ... -> global variable
423 bool LLParser::ParseNamedGlobal() {
424 assert(Lex.getKind() == lltok::GlobalVar);
425 LocTy NameLoc = Lex.getLoc();
426 std::string Name = Lex.getStrVal();
430 unsigned Linkage, Visibility;
431 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
432 ParseOptionalLinkage(Linkage, HasLinkage) ||
433 ParseOptionalVisibility(Visibility))
436 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
437 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
438 return ParseAlias(Name, NameLoc, Visibility);
442 // ::= '!' STRINGCONSTANT
443 bool LLParser::ParseMDString(MetadataBase *&MDS) {
445 if (ParseStringConstant(Str)) return true;
446 MDS = MDString::get(Context, Str);
451 // ::= '!' MDNodeNumber
452 bool LLParser::ParseMDNode(MetadataBase *&Node) {
453 // !{ ..., !42, ... }
455 if (ParseUInt32(MID)) return true;
457 // Check existing MDNode.
458 std::map<unsigned, MetadataBase *>::iterator I = MetadataCache.find(MID);
459 if (I != MetadataCache.end()) {
464 // Check known forward references.
465 std::map<unsigned, std::pair<MetadataBase *, LocTy> >::iterator
466 FI = ForwardRefMDNodes.find(MID);
467 if (FI != ForwardRefMDNodes.end()) {
468 Node = FI->second.first;
472 // Create MDNode forward reference
473 SmallVector<Value *, 1> Elts;
474 std::string FwdRefName = "llvm.mdnode.fwdref." + utostr(MID);
475 Elts.push_back(MDString::get(Context, FwdRefName));
476 MDNode *FwdNode = MDNode::get(Context, Elts.data(), Elts.size());
477 ForwardRefMDNodes[MID] = std::make_pair(FwdNode, Lex.getLoc());
482 ///ParseNamedMetadata:
483 /// !foo = !{ !1, !2 }
484 bool LLParser::ParseNamedMetadata() {
485 assert(Lex.getKind() == lltok::NamedMD);
487 std::string Name = Lex.getStrVal();
489 if (ParseToken(lltok::equal, "expected '=' here"))
492 if (Lex.getKind() != lltok::Metadata)
493 return TokError("Expected '!' here");
496 if (Lex.getKind() != lltok::lbrace)
497 return TokError("Expected '{' here");
499 SmallVector<MetadataBase *, 8> Elts;
501 if (Lex.getKind() != lltok::Metadata)
502 return TokError("Expected '!' here");
505 if (ParseMDNode(N)) return true;
507 } while (EatIfPresent(lltok::comma));
509 if (ParseToken(lltok::rbrace, "expected end of metadata node"))
512 NamedMDNode::Create(Context, Name, Elts.data(), Elts.size(), M);
516 /// ParseStandaloneMetadata:
518 bool LLParser::ParseStandaloneMetadata() {
519 assert(Lex.getKind() == lltok::Metadata);
521 unsigned MetadataID = 0;
522 if (ParseUInt32(MetadataID))
524 if (MetadataCache.find(MetadataID) != MetadataCache.end())
525 return TokError("Metadata id is already used");
526 if (ParseToken(lltok::equal, "expected '=' here"))
530 PATypeHolder Ty(Type::getVoidTy(Context));
531 if (ParseType(Ty, TyLoc))
534 if (Lex.getKind() != lltok::Metadata)
535 return TokError("Expected metadata here");
538 if (Lex.getKind() != lltok::lbrace)
539 return TokError("Expected '{' here");
541 SmallVector<Value *, 16> Elts;
542 if (ParseMDNodeVector(Elts)
543 || ParseToken(lltok::rbrace, "expected end of metadata node"))
546 MDNode *Init = MDNode::get(Context, Elts.data(), Elts.size());
547 MetadataCache[MetadataID] = Init;
548 std::map<unsigned, std::pair<MetadataBase *, LocTy> >::iterator
549 FI = ForwardRefMDNodes.find(MetadataID);
550 if (FI != ForwardRefMDNodes.end()) {
551 MDNode *FwdNode = cast<MDNode>(FI->second.first);
552 FwdNode->replaceAllUsesWith(Init);
553 ForwardRefMDNodes.erase(FI);
560 /// ::= GlobalVar '=' OptionalVisibility 'alias' OptionalLinkage Aliasee
563 /// ::= 'bitcast' '(' TypeAndValue 'to' Type ')'
564 /// ::= 'getelementptr' 'inbounds'? '(' ... ')'
566 /// Everything through visibility has already been parsed.
568 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc,
569 unsigned Visibility) {
570 assert(Lex.getKind() == lltok::kw_alias);
573 LocTy LinkageLoc = Lex.getLoc();
574 if (ParseOptionalLinkage(Linkage))
577 if (Linkage != GlobalValue::ExternalLinkage &&
578 Linkage != GlobalValue::WeakAnyLinkage &&
579 Linkage != GlobalValue::WeakODRLinkage &&
580 Linkage != GlobalValue::InternalLinkage &&
581 Linkage != GlobalValue::PrivateLinkage &&
582 Linkage != GlobalValue::LinkerPrivateLinkage)
583 return Error(LinkageLoc, "invalid linkage type for alias");
586 LocTy AliaseeLoc = Lex.getLoc();
587 if (Lex.getKind() != lltok::kw_bitcast &&
588 Lex.getKind() != lltok::kw_getelementptr) {
589 if (ParseGlobalTypeAndValue(Aliasee)) return true;
591 // The bitcast dest type is not present, it is implied by the dest type.
593 if (ParseValID(ID)) return true;
594 if (ID.Kind != ValID::t_Constant)
595 return Error(AliaseeLoc, "invalid aliasee");
596 Aliasee = ID.ConstantVal;
599 if (!isa<PointerType>(Aliasee->getType()))
600 return Error(AliaseeLoc, "alias must have pointer type");
602 // Okay, create the alias but do not insert it into the module yet.
603 GlobalAlias* GA = new GlobalAlias(Aliasee->getType(),
604 (GlobalValue::LinkageTypes)Linkage, Name,
606 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
608 // See if this value already exists in the symbol table. If so, it is either
609 // a redefinition or a definition of a forward reference.
610 if (GlobalValue *Val =
611 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name))) {
612 // See if this was a redefinition. If so, there is no entry in
614 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
615 I = ForwardRefVals.find(Name);
616 if (I == ForwardRefVals.end())
617 return Error(NameLoc, "redefinition of global named '@" + Name + "'");
619 // Otherwise, this was a definition of forward ref. Verify that types
621 if (Val->getType() != GA->getType())
622 return Error(NameLoc,
623 "forward reference and definition of alias have different types");
625 // If they agree, just RAUW the old value with the alias and remove the
627 Val->replaceAllUsesWith(GA);
628 Val->eraseFromParent();
629 ForwardRefVals.erase(I);
632 // Insert into the module, we know its name won't collide now.
633 M->getAliasList().push_back(GA);
634 assert(GA->getNameStr() == Name && "Should not be a name conflict!");
640 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalThreadLocal
641 /// OptionalAddrSpace GlobalType Type Const
642 /// ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
643 /// OptionalAddrSpace GlobalType Type Const
645 /// Everything through visibility has been parsed already.
647 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
648 unsigned Linkage, bool HasLinkage,
649 unsigned Visibility) {
651 bool ThreadLocal, IsConstant;
654 PATypeHolder Ty(Type::getVoidTy(Context));
655 if (ParseOptionalToken(lltok::kw_thread_local, ThreadLocal) ||
656 ParseOptionalAddrSpace(AddrSpace) ||
657 ParseGlobalType(IsConstant) ||
658 ParseType(Ty, TyLoc))
661 // If the linkage is specified and is external, then no initializer is
664 if (!HasLinkage || (Linkage != GlobalValue::DLLImportLinkage &&
665 Linkage != GlobalValue::ExternalWeakLinkage &&
666 Linkage != GlobalValue::ExternalLinkage)) {
667 if (ParseGlobalValue(Ty, Init))
671 if (isa<FunctionType>(Ty) || Ty == Type::getLabelTy(Context))
672 return Error(TyLoc, "invalid type for global variable");
674 GlobalVariable *GV = 0;
676 // See if the global was forward referenced, if so, use the global.
678 if ((GV = M->getGlobalVariable(Name, true)) &&
679 !ForwardRefVals.erase(Name))
680 return Error(NameLoc, "redefinition of global '@" + Name + "'");
682 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
683 I = ForwardRefValIDs.find(NumberedVals.size());
684 if (I != ForwardRefValIDs.end()) {
685 GV = cast<GlobalVariable>(I->second.first);
686 ForwardRefValIDs.erase(I);
691 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, 0,
692 Name, 0, false, AddrSpace);
694 if (GV->getType()->getElementType() != Ty)
696 "forward reference and definition of global have different types");
698 // Move the forward-reference to the correct spot in the module.
699 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
703 NumberedVals.push_back(GV);
705 // Set the parsed properties on the global.
707 GV->setInitializer(Init);
708 GV->setConstant(IsConstant);
709 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
710 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
711 GV->setThreadLocal(ThreadLocal);
713 // Parse attributes on the global.
714 while (Lex.getKind() == lltok::comma) {
717 if (Lex.getKind() == lltok::kw_section) {
719 GV->setSection(Lex.getStrVal());
720 if (ParseToken(lltok::StringConstant, "expected global section string"))
722 } else if (Lex.getKind() == lltok::kw_align) {
724 if (ParseOptionalAlignment(Alignment)) return true;
725 GV->setAlignment(Alignment);
727 TokError("unknown global variable property!");
735 //===----------------------------------------------------------------------===//
736 // GlobalValue Reference/Resolution Routines.
737 //===----------------------------------------------------------------------===//
739 /// GetGlobalVal - Get a value with the specified name or ID, creating a
740 /// forward reference record if needed. This can return null if the value
741 /// exists but does not have the right type.
742 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, const Type *Ty,
744 const PointerType *PTy = dyn_cast<PointerType>(Ty);
746 Error(Loc, "global variable reference must have pointer type");
750 // Look this name up in the normal function symbol table.
752 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
754 // If this is a forward reference for the value, see if we already created a
755 // forward ref record.
757 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
758 I = ForwardRefVals.find(Name);
759 if (I != ForwardRefVals.end())
760 Val = I->second.first;
763 // If we have the value in the symbol table or fwd-ref table, return it.
765 if (Val->getType() == Ty) return Val;
766 Error(Loc, "'@" + Name + "' defined with type '" +
767 Val->getType()->getDescription() + "'");
771 // Otherwise, create a new forward reference for this value and remember it.
773 if (const FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType())) {
774 // Function types can return opaque but functions can't.
775 if (isa<OpaqueType>(FT->getReturnType())) {
776 Error(Loc, "function may not return opaque type");
780 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
782 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
783 GlobalValue::ExternalWeakLinkage, 0, Name);
786 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
790 GlobalValue *LLParser::GetGlobalVal(unsigned ID, const Type *Ty, LocTy Loc) {
791 const PointerType *PTy = dyn_cast<PointerType>(Ty);
793 Error(Loc, "global variable reference must have pointer type");
797 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
799 // If this is a forward reference for the value, see if we already created a
800 // forward ref record.
802 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
803 I = ForwardRefValIDs.find(ID);
804 if (I != ForwardRefValIDs.end())
805 Val = I->second.first;
808 // If we have the value in the symbol table or fwd-ref table, return it.
810 if (Val->getType() == Ty) return Val;
811 Error(Loc, "'@" + utostr(ID) + "' defined with type '" +
812 Val->getType()->getDescription() + "'");
816 // Otherwise, create a new forward reference for this value and remember it.
818 if (const FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType())) {
819 // Function types can return opaque but functions can't.
820 if (isa<OpaqueType>(FT->getReturnType())) {
821 Error(Loc, "function may not return opaque type");
824 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
826 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
827 GlobalValue::ExternalWeakLinkage, 0, "");
830 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
835 //===----------------------------------------------------------------------===//
837 //===----------------------------------------------------------------------===//
839 /// ParseToken - If the current token has the specified kind, eat it and return
840 /// success. Otherwise, emit the specified error and return failure.
841 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
842 if (Lex.getKind() != T)
843 return TokError(ErrMsg);
848 /// ParseStringConstant
849 /// ::= StringConstant
850 bool LLParser::ParseStringConstant(std::string &Result) {
851 if (Lex.getKind() != lltok::StringConstant)
852 return TokError("expected string constant");
853 Result = Lex.getStrVal();
860 bool LLParser::ParseUInt32(unsigned &Val) {
861 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
862 return TokError("expected integer");
863 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
864 if (Val64 != unsigned(Val64))
865 return TokError("expected 32-bit integer (too large)");
872 /// ParseOptionalAddrSpace
874 /// := 'addrspace' '(' uint32 ')'
875 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
877 if (!EatIfPresent(lltok::kw_addrspace))
879 return ParseToken(lltok::lparen, "expected '(' in address space") ||
880 ParseUInt32(AddrSpace) ||
881 ParseToken(lltok::rparen, "expected ')' in address space");
884 /// ParseOptionalAttrs - Parse a potentially empty attribute list. AttrKind
885 /// indicates what kind of attribute list this is: 0: function arg, 1: result,
886 /// 2: function attr.
887 /// 3: function arg after value: FIXME: REMOVE IN LLVM 3.0
888 bool LLParser::ParseOptionalAttrs(unsigned &Attrs, unsigned AttrKind) {
889 Attrs = Attribute::None;
890 LocTy AttrLoc = Lex.getLoc();
893 switch (Lex.getKind()) {
896 // Treat these as signext/zeroext if they occur in the argument list after
897 // the value, as in "call i8 @foo(i8 10 sext)". If they occur before the
898 // value, as in "call i8 @foo(i8 sext (" then it is part of a constant
900 // FIXME: REMOVE THIS IN LLVM 3.0
902 if (Lex.getKind() == lltok::kw_sext)
903 Attrs |= Attribute::SExt;
905 Attrs |= Attribute::ZExt;
909 default: // End of attributes.
910 if (AttrKind != 2 && (Attrs & Attribute::FunctionOnly))
911 return Error(AttrLoc, "invalid use of function-only attribute");
913 if (AttrKind != 0 && AttrKind != 3 && (Attrs & Attribute::ParameterOnly))
914 return Error(AttrLoc, "invalid use of parameter-only attribute");
917 case lltok::kw_zeroext: Attrs |= Attribute::ZExt; break;
918 case lltok::kw_signext: Attrs |= Attribute::SExt; break;
919 case lltok::kw_inreg: Attrs |= Attribute::InReg; break;
920 case lltok::kw_sret: Attrs |= Attribute::StructRet; break;
921 case lltok::kw_noalias: Attrs |= Attribute::NoAlias; break;
922 case lltok::kw_nocapture: Attrs |= Attribute::NoCapture; break;
923 case lltok::kw_byval: Attrs |= Attribute::ByVal; break;
924 case lltok::kw_nest: Attrs |= Attribute::Nest; break;
926 case lltok::kw_noreturn: Attrs |= Attribute::NoReturn; break;
927 case lltok::kw_nounwind: Attrs |= Attribute::NoUnwind; break;
928 case lltok::kw_noinline: Attrs |= Attribute::NoInline; break;
929 case lltok::kw_readnone: Attrs |= Attribute::ReadNone; break;
930 case lltok::kw_readonly: Attrs |= Attribute::ReadOnly; break;
931 case lltok::kw_inlinehint: Attrs |= Attribute::InlineHint; break;
932 case lltok::kw_alwaysinline: Attrs |= Attribute::AlwaysInline; break;
933 case lltok::kw_optsize: Attrs |= Attribute::OptimizeForSize; break;
934 case lltok::kw_ssp: Attrs |= Attribute::StackProtect; break;
935 case lltok::kw_sspreq: Attrs |= Attribute::StackProtectReq; break;
936 case lltok::kw_noredzone: Attrs |= Attribute::NoRedZone; break;
937 case lltok::kw_noimplicitfloat: Attrs |= Attribute::NoImplicitFloat; break;
938 case lltok::kw_naked: Attrs |= Attribute::Naked; break;
940 case lltok::kw_align: {
942 if (ParseOptionalAlignment(Alignment))
944 Attrs |= Attribute::constructAlignmentFromInt(Alignment);
952 /// ParseOptionalLinkage
955 /// ::= 'linker_private'
960 /// ::= 'linkonce_odr'
965 /// ::= 'extern_weak'
967 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
969 switch (Lex.getKind()) {
970 default: Res=GlobalValue::ExternalLinkage; return false;
971 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
972 case lltok::kw_linker_private: Res = GlobalValue::LinkerPrivateLinkage; break;
973 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
974 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
975 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
976 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
977 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
978 case lltok::kw_available_externally:
979 Res = GlobalValue::AvailableExternallyLinkage;
981 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
982 case lltok::kw_dllexport: Res = GlobalValue::DLLExportLinkage; break;
983 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
984 case lltok::kw_dllimport: Res = GlobalValue::DLLImportLinkage; break;
985 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
986 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
993 /// ParseOptionalVisibility
999 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1000 switch (Lex.getKind()) {
1001 default: Res = GlobalValue::DefaultVisibility; return false;
1002 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1003 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1004 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1010 /// ParseOptionalCallingConv
1015 /// ::= 'x86_stdcallcc'
1016 /// ::= 'x86_fastcallcc'
1017 /// ::= 'arm_apcscc'
1018 /// ::= 'arm_aapcscc'
1019 /// ::= 'arm_aapcs_vfpcc'
1022 bool LLParser::ParseOptionalCallingConv(CallingConv::ID &CC) {
1023 switch (Lex.getKind()) {
1024 default: CC = CallingConv::C; return false;
1025 case lltok::kw_ccc: CC = CallingConv::C; break;
1026 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1027 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1028 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1029 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1030 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1031 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1032 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1033 case lltok::kw_cc: {
1034 unsigned ArbitraryCC;
1036 if (ParseUInt32(ArbitraryCC)) {
1039 CC = static_cast<CallingConv::ID>(ArbitraryCC);
1049 /// ParseOptionalDbgInfo
1052 bool LLParser::ParseOptionalDbgInfo() {
1054 if (!EatIfPresent(lltok::kw_dbg))
1056 if (Lex.getKind() != lltok::Metadata)
1057 return TokError("Expected '!' here");
1060 if (ParseMDNode(Node)) return true;
1062 Metadata &TheMetadata = M->getContext().getMetadata();
1063 unsigned MDDbgKind = TheMetadata.getMDKind("dbg");
1065 MDDbgKind = TheMetadata.RegisterMDKind("dbg");
1066 MDsOnInst.push_back(std::make_pair(MDDbgKind, cast<MDNode>(Node)));
1071 /// ParseOptionalAlignment
1074 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1076 if (!EatIfPresent(lltok::kw_align))
1078 LocTy AlignLoc = Lex.getLoc();
1079 if (ParseUInt32(Alignment)) return true;
1080 if (!isPowerOf2_32(Alignment))
1081 return Error(AlignLoc, "alignment is not a power of two");
1085 /// ParseOptionalInfo
1086 /// ::= OptionalInfo (',' OptionalInfo)+
1087 bool LLParser::ParseOptionalInfo(unsigned &Alignment) {
1089 // FIXME: Handle customized metadata info attached with an instruction.
1091 if (Lex.getKind() == lltok::kw_dbg) {
1092 if (ParseOptionalDbgInfo()) return true;
1093 } else if (Lex.getKind() == lltok::kw_align) {
1094 if (ParseOptionalAlignment(Alignment)) return true;
1097 } while (EatIfPresent(lltok::comma));
1104 /// ::= (',' uint32)+
1105 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices) {
1106 if (Lex.getKind() != lltok::comma)
1107 return TokError("expected ',' as start of index list");
1109 while (EatIfPresent(lltok::comma)) {
1111 if (ParseUInt32(Idx)) return true;
1112 Indices.push_back(Idx);
1118 //===----------------------------------------------------------------------===//
1120 //===----------------------------------------------------------------------===//
1122 /// ParseType - Parse and resolve a full type.
1123 bool LLParser::ParseType(PATypeHolder &Result, bool AllowVoid) {
1124 LocTy TypeLoc = Lex.getLoc();
1125 if (ParseTypeRec(Result)) return true;
1127 // Verify no unresolved uprefs.
1128 if (!UpRefs.empty())
1129 return Error(UpRefs.back().Loc, "invalid unresolved type up reference");
1131 if (!AllowVoid && Result.get() == Type::getVoidTy(Context))
1132 return Error(TypeLoc, "void type only allowed for function results");
1137 /// HandleUpRefs - Every time we finish a new layer of types, this function is
1138 /// called. It loops through the UpRefs vector, which is a list of the
1139 /// currently active types. For each type, if the up-reference is contained in
1140 /// the newly completed type, we decrement the level count. When the level
1141 /// count reaches zero, the up-referenced type is the type that is passed in:
1142 /// thus we can complete the cycle.
1144 PATypeHolder LLParser::HandleUpRefs(const Type *ty) {
1145 // If Ty isn't abstract, or if there are no up-references in it, then there is
1146 // nothing to resolve here.
1147 if (!ty->isAbstract() || UpRefs.empty()) return ty;
1149 PATypeHolder Ty(ty);
1151 errs() << "Type '" << Ty->getDescription()
1152 << "' newly formed. Resolving upreferences.\n"
1153 << UpRefs.size() << " upreferences active!\n";
1156 // If we find any resolvable upreferences (i.e., those whose NestingLevel goes
1157 // to zero), we resolve them all together before we resolve them to Ty. At
1158 // the end of the loop, if there is anything to resolve to Ty, it will be in
1160 OpaqueType *TypeToResolve = 0;
1162 for (unsigned i = 0; i != UpRefs.size(); ++i) {
1163 // Determine if 'Ty' directly contains this up-references 'LastContainedTy'.
1165 std::find(Ty->subtype_begin(), Ty->subtype_end(),
1166 UpRefs[i].LastContainedTy) != Ty->subtype_end();
1169 errs() << " UR#" << i << " - TypeContains(" << Ty->getDescription() << ", "
1170 << UpRefs[i].LastContainedTy->getDescription() << ") = "
1171 << (ContainsType ? "true" : "false")
1172 << " level=" << UpRefs[i].NestingLevel << "\n";
1177 // Decrement level of upreference
1178 unsigned Level = --UpRefs[i].NestingLevel;
1179 UpRefs[i].LastContainedTy = Ty;
1181 // If the Up-reference has a non-zero level, it shouldn't be resolved yet.
1186 errs() << " * Resolving upreference for " << UpRefs[i].UpRefTy << "\n";
1189 TypeToResolve = UpRefs[i].UpRefTy;
1191 UpRefs[i].UpRefTy->refineAbstractTypeTo(TypeToResolve);
1192 UpRefs.erase(UpRefs.begin()+i); // Remove from upreference list.
1193 --i; // Do not skip the next element.
1197 TypeToResolve->refineAbstractTypeTo(Ty);
1203 /// ParseTypeRec - The recursive function used to process the internal
1204 /// implementation details of types.
1205 bool LLParser::ParseTypeRec(PATypeHolder &Result) {
1206 switch (Lex.getKind()) {
1208 return TokError("expected type");
1210 // TypeRec ::= 'float' | 'void' (etc)
1211 Result = Lex.getTyVal();
1214 case lltok::kw_opaque:
1215 // TypeRec ::= 'opaque'
1216 Result = OpaqueType::get(Context);
1220 // TypeRec ::= '{' ... '}'
1221 if (ParseStructType(Result, false))
1224 case lltok::lsquare:
1225 // TypeRec ::= '[' ... ']'
1226 Lex.Lex(); // eat the lsquare.
1227 if (ParseArrayVectorType(Result, false))
1230 case lltok::less: // Either vector or packed struct.
1231 // TypeRec ::= '<' ... '>'
1233 if (Lex.getKind() == lltok::lbrace) {
1234 if (ParseStructType(Result, true) ||
1235 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1237 } else if (ParseArrayVectorType(Result, true))
1240 case lltok::LocalVar:
1241 case lltok::StringConstant: // FIXME: REMOVE IN LLVM 3.0
1243 if (const Type *T = M->getTypeByName(Lex.getStrVal())) {
1246 Result = OpaqueType::get(Context);
1247 ForwardRefTypes.insert(std::make_pair(Lex.getStrVal(),
1248 std::make_pair(Result,
1250 M->addTypeName(Lex.getStrVal(), Result.get());
1255 case lltok::LocalVarID:
1257 if (Lex.getUIntVal() < NumberedTypes.size())
1258 Result = NumberedTypes[Lex.getUIntVal()];
1260 std::map<unsigned, std::pair<PATypeHolder, LocTy> >::iterator
1261 I = ForwardRefTypeIDs.find(Lex.getUIntVal());
1262 if (I != ForwardRefTypeIDs.end())
1263 Result = I->second.first;
1265 Result = OpaqueType::get(Context);
1266 ForwardRefTypeIDs.insert(std::make_pair(Lex.getUIntVal(),
1267 std::make_pair(Result,
1273 case lltok::backslash: {
1274 // TypeRec ::= '\' 4
1277 if (ParseUInt32(Val)) return true;
1278 OpaqueType *OT = OpaqueType::get(Context); //Use temporary placeholder.
1279 UpRefs.push_back(UpRefRecord(Lex.getLoc(), Val, OT));
1285 // Parse the type suffixes.
1287 switch (Lex.getKind()) {
1289 default: return false;
1291 // TypeRec ::= TypeRec '*'
1293 if (Result.get() == Type::getLabelTy(Context))
1294 return TokError("basic block pointers are invalid");
1295 if (Result.get() == Type::getVoidTy(Context))
1296 return TokError("pointers to void are invalid; use i8* instead");
1297 if (!PointerType::isValidElementType(Result.get()))
1298 return TokError("pointer to this type is invalid");
1299 Result = HandleUpRefs(PointerType::getUnqual(Result.get()));
1303 // TypeRec ::= TypeRec 'addrspace' '(' uint32 ')' '*'
1304 case lltok::kw_addrspace: {
1305 if (Result.get() == Type::getLabelTy(Context))
1306 return TokError("basic block pointers are invalid");
1307 if (Result.get() == Type::getVoidTy(Context))
1308 return TokError("pointers to void are invalid; use i8* instead");
1309 if (!PointerType::isValidElementType(Result.get()))
1310 return TokError("pointer to this type is invalid");
1312 if (ParseOptionalAddrSpace(AddrSpace) ||
1313 ParseToken(lltok::star, "expected '*' in address space"))
1316 Result = HandleUpRefs(PointerType::get(Result.get(), AddrSpace));
1320 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1322 if (ParseFunctionType(Result))
1329 /// ParseParameterList
1331 /// ::= '(' Arg (',' Arg)* ')'
1333 /// ::= Type OptionalAttributes Value OptionalAttributes
1334 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1335 PerFunctionState &PFS) {
1336 if (ParseToken(lltok::lparen, "expected '(' in call"))
1339 while (Lex.getKind() != lltok::rparen) {
1340 // If this isn't the first argument, we need a comma.
1341 if (!ArgList.empty() &&
1342 ParseToken(lltok::comma, "expected ',' in argument list"))
1345 // Parse the argument.
1347 PATypeHolder ArgTy(Type::getVoidTy(Context));
1348 unsigned ArgAttrs1, ArgAttrs2;
1350 if (ParseType(ArgTy, ArgLoc) ||
1351 ParseOptionalAttrs(ArgAttrs1, 0) ||
1352 ParseValue(ArgTy, V, PFS) ||
1353 // FIXME: Should not allow attributes after the argument, remove this in
1355 ParseOptionalAttrs(ArgAttrs2, 3))
1357 ArgList.push_back(ParamInfo(ArgLoc, V, ArgAttrs1|ArgAttrs2));
1360 Lex.Lex(); // Lex the ')'.
1366 /// ParseArgumentList - Parse the argument list for a function type or function
1367 /// prototype. If 'inType' is true then we are parsing a FunctionType.
1368 /// ::= '(' ArgTypeListI ')'
1372 /// ::= ArgTypeList ',' '...'
1373 /// ::= ArgType (',' ArgType)*
1375 bool LLParser::ParseArgumentList(std::vector<ArgInfo> &ArgList,
1376 bool &isVarArg, bool inType) {
1378 assert(Lex.getKind() == lltok::lparen);
1379 Lex.Lex(); // eat the (.
1381 if (Lex.getKind() == lltok::rparen) {
1383 } else if (Lex.getKind() == lltok::dotdotdot) {
1387 LocTy TypeLoc = Lex.getLoc();
1388 PATypeHolder ArgTy(Type::getVoidTy(Context));
1392 // If we're parsing a type, use ParseTypeRec, because we allow recursive
1393 // types (such as a function returning a pointer to itself). If parsing a
1394 // function prototype, we require fully resolved types.
1395 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1396 ParseOptionalAttrs(Attrs, 0)) return true;
1398 if (ArgTy == Type::getVoidTy(Context))
1399 return Error(TypeLoc, "argument can not have void type");
1401 if (Lex.getKind() == lltok::LocalVar ||
1402 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1403 Name = Lex.getStrVal();
1407 if (!FunctionType::isValidArgumentType(ArgTy))
1408 return Error(TypeLoc, "invalid type for function argument");
1410 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1412 while (EatIfPresent(lltok::comma)) {
1413 // Handle ... at end of arg list.
1414 if (EatIfPresent(lltok::dotdotdot)) {
1419 // Otherwise must be an argument type.
1420 TypeLoc = Lex.getLoc();
1421 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1422 ParseOptionalAttrs(Attrs, 0)) return true;
1424 if (ArgTy == Type::getVoidTy(Context))
1425 return Error(TypeLoc, "argument can not have void type");
1427 if (Lex.getKind() == lltok::LocalVar ||
1428 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1429 Name = Lex.getStrVal();
1435 if (!ArgTy->isFirstClassType() && !isa<OpaqueType>(ArgTy))
1436 return Error(TypeLoc, "invalid type for function argument");
1438 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1442 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1445 /// ParseFunctionType
1446 /// ::= Type ArgumentList OptionalAttrs
1447 bool LLParser::ParseFunctionType(PATypeHolder &Result) {
1448 assert(Lex.getKind() == lltok::lparen);
1450 if (!FunctionType::isValidReturnType(Result))
1451 return TokError("invalid function return type");
1453 std::vector<ArgInfo> ArgList;
1456 if (ParseArgumentList(ArgList, isVarArg, true) ||
1457 // FIXME: Allow, but ignore attributes on function types!
1458 // FIXME: Remove in LLVM 3.0
1459 ParseOptionalAttrs(Attrs, 2))
1462 // Reject names on the arguments lists.
1463 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1464 if (!ArgList[i].Name.empty())
1465 return Error(ArgList[i].Loc, "argument name invalid in function type");
1466 if (!ArgList[i].Attrs != 0) {
1467 // Allow but ignore attributes on function types; this permits
1469 // FIXME: REJECT ATTRIBUTES ON FUNCTION TYPES in LLVM 3.0
1473 std::vector<const Type*> ArgListTy;
1474 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1475 ArgListTy.push_back(ArgList[i].Type);
1477 Result = HandleUpRefs(FunctionType::get(Result.get(),
1478 ArgListTy, isVarArg));
1482 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
1485 /// ::= '{' TypeRec (',' TypeRec)* '}'
1486 /// ::= '<' '{' '}' '>'
1487 /// ::= '<' '{' TypeRec (',' TypeRec)* '}' '>'
1488 bool LLParser::ParseStructType(PATypeHolder &Result, bool Packed) {
1489 assert(Lex.getKind() == lltok::lbrace);
1490 Lex.Lex(); // Consume the '{'
1492 if (EatIfPresent(lltok::rbrace)) {
1493 Result = StructType::get(Context, Packed);
1497 std::vector<PATypeHolder> ParamsList;
1498 LocTy EltTyLoc = Lex.getLoc();
1499 if (ParseTypeRec(Result)) return true;
1500 ParamsList.push_back(Result);
1502 if (Result == Type::getVoidTy(Context))
1503 return Error(EltTyLoc, "struct element can not have void type");
1504 if (!StructType::isValidElementType(Result))
1505 return Error(EltTyLoc, "invalid element type for struct");
1507 while (EatIfPresent(lltok::comma)) {
1508 EltTyLoc = Lex.getLoc();
1509 if (ParseTypeRec(Result)) return true;
1511 if (Result == Type::getVoidTy(Context))
1512 return Error(EltTyLoc, "struct element can not have void type");
1513 if (!StructType::isValidElementType(Result))
1514 return Error(EltTyLoc, "invalid element type for struct");
1516 ParamsList.push_back(Result);
1519 if (ParseToken(lltok::rbrace, "expected '}' at end of struct"))
1522 std::vector<const Type*> ParamsListTy;
1523 for (unsigned i = 0, e = ParamsList.size(); i != e; ++i)
1524 ParamsListTy.push_back(ParamsList[i].get());
1525 Result = HandleUpRefs(StructType::get(Context, ParamsListTy, Packed));
1529 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
1530 /// token has already been consumed.
1532 /// ::= '[' APSINTVAL 'x' Types ']'
1533 /// ::= '<' APSINTVAL 'x' Types '>'
1534 bool LLParser::ParseArrayVectorType(PATypeHolder &Result, bool isVector) {
1535 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
1536 Lex.getAPSIntVal().getBitWidth() > 64)
1537 return TokError("expected number in address space");
1539 LocTy SizeLoc = Lex.getLoc();
1540 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
1543 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
1546 LocTy TypeLoc = Lex.getLoc();
1547 PATypeHolder EltTy(Type::getVoidTy(Context));
1548 if (ParseTypeRec(EltTy)) return true;
1550 if (EltTy == Type::getVoidTy(Context))
1551 return Error(TypeLoc, "array and vector element type cannot be void");
1553 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
1554 "expected end of sequential type"))
1559 return Error(SizeLoc, "zero element vector is illegal");
1560 if ((unsigned)Size != Size)
1561 return Error(SizeLoc, "size too large for vector");
1562 if (!VectorType::isValidElementType(EltTy))
1563 return Error(TypeLoc, "vector element type must be fp or integer");
1564 Result = VectorType::get(EltTy, unsigned(Size));
1566 if (!ArrayType::isValidElementType(EltTy))
1567 return Error(TypeLoc, "invalid array element type");
1568 Result = HandleUpRefs(ArrayType::get(EltTy, Size));
1573 //===----------------------------------------------------------------------===//
1574 // Function Semantic Analysis.
1575 //===----------------------------------------------------------------------===//
1577 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f)
1580 // Insert unnamed arguments into the NumberedVals list.
1581 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
1584 NumberedVals.push_back(AI);
1587 LLParser::PerFunctionState::~PerFunctionState() {
1588 // If there were any forward referenced non-basicblock values, delete them.
1589 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
1590 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
1591 if (!isa<BasicBlock>(I->second.first)) {
1592 I->second.first->replaceAllUsesWith(
1593 UndefValue::get(I->second.first->getType()));
1594 delete I->second.first;
1595 I->second.first = 0;
1598 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1599 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
1600 if (!isa<BasicBlock>(I->second.first)) {
1601 I->second.first->replaceAllUsesWith(
1602 UndefValue::get(I->second.first->getType()));
1603 delete I->second.first;
1604 I->second.first = 0;
1608 bool LLParser::PerFunctionState::VerifyFunctionComplete() {
1609 if (!ForwardRefVals.empty())
1610 return P.Error(ForwardRefVals.begin()->second.second,
1611 "use of undefined value '%" + ForwardRefVals.begin()->first +
1613 if (!ForwardRefValIDs.empty())
1614 return P.Error(ForwardRefValIDs.begin()->second.second,
1615 "use of undefined value '%" +
1616 utostr(ForwardRefValIDs.begin()->first) + "'");
1621 /// GetVal - Get a value with the specified name or ID, creating a
1622 /// forward reference record if needed. This can return null if the value
1623 /// exists but does not have the right type.
1624 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
1625 const Type *Ty, LocTy Loc) {
1626 // Look this name up in the normal function symbol table.
1627 Value *Val = F.getValueSymbolTable().lookup(Name);
1629 // If this is a forward reference for the value, see if we already created a
1630 // forward ref record.
1632 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1633 I = ForwardRefVals.find(Name);
1634 if (I != ForwardRefVals.end())
1635 Val = I->second.first;
1638 // If we have the value in the symbol table or fwd-ref table, return it.
1640 if (Val->getType() == Ty) return Val;
1641 if (Ty == Type::getLabelTy(F.getContext()))
1642 P.Error(Loc, "'%" + Name + "' is not a basic block");
1644 P.Error(Loc, "'%" + Name + "' defined with type '" +
1645 Val->getType()->getDescription() + "'");
1649 // Don't make placeholders with invalid type.
1650 if (!Ty->isFirstClassType() && !isa<OpaqueType>(Ty) &&
1651 Ty != Type::getLabelTy(F.getContext())) {
1652 P.Error(Loc, "invalid use of a non-first-class type");
1656 // Otherwise, create a new forward reference for this value and remember it.
1658 if (Ty == Type::getLabelTy(F.getContext()))
1659 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
1661 FwdVal = new Argument(Ty, Name);
1663 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1667 Value *LLParser::PerFunctionState::GetVal(unsigned ID, const Type *Ty,
1669 // Look this name up in the normal function symbol table.
1670 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
1672 // If this is a forward reference for the value, see if we already created a
1673 // forward ref record.
1675 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1676 I = ForwardRefValIDs.find(ID);
1677 if (I != ForwardRefValIDs.end())
1678 Val = I->second.first;
1681 // If we have the value in the symbol table or fwd-ref table, return it.
1683 if (Val->getType() == Ty) return Val;
1684 if (Ty == Type::getLabelTy(F.getContext()))
1685 P.Error(Loc, "'%" + utostr(ID) + "' is not a basic block");
1687 P.Error(Loc, "'%" + utostr(ID) + "' defined with type '" +
1688 Val->getType()->getDescription() + "'");
1692 if (!Ty->isFirstClassType() && !isa<OpaqueType>(Ty) &&
1693 Ty != Type::getLabelTy(F.getContext())) {
1694 P.Error(Loc, "invalid use of a non-first-class type");
1698 // Otherwise, create a new forward reference for this value and remember it.
1700 if (Ty == Type::getLabelTy(F.getContext()))
1701 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
1703 FwdVal = new Argument(Ty);
1705 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1709 /// SetInstName - After an instruction is parsed and inserted into its
1710 /// basic block, this installs its name.
1711 bool LLParser::PerFunctionState::SetInstName(int NameID,
1712 const std::string &NameStr,
1713 LocTy NameLoc, Instruction *Inst) {
1714 // If this instruction has void type, it cannot have a name or ID specified.
1715 if (Inst->getType() == Type::getVoidTy(F.getContext())) {
1716 if (NameID != -1 || !NameStr.empty())
1717 return P.Error(NameLoc, "instructions returning void cannot have a name");
1721 // If this was a numbered instruction, verify that the instruction is the
1722 // expected value and resolve any forward references.
1723 if (NameStr.empty()) {
1724 // If neither a name nor an ID was specified, just use the next ID.
1726 NameID = NumberedVals.size();
1728 if (unsigned(NameID) != NumberedVals.size())
1729 return P.Error(NameLoc, "instruction expected to be numbered '%" +
1730 utostr(NumberedVals.size()) + "'");
1732 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
1733 ForwardRefValIDs.find(NameID);
1734 if (FI != ForwardRefValIDs.end()) {
1735 if (FI->second.first->getType() != Inst->getType())
1736 return P.Error(NameLoc, "instruction forward referenced with type '" +
1737 FI->second.first->getType()->getDescription() + "'");
1738 FI->second.first->replaceAllUsesWith(Inst);
1739 delete FI->second.first;
1740 ForwardRefValIDs.erase(FI);
1743 NumberedVals.push_back(Inst);
1747 // Otherwise, the instruction had a name. Resolve forward refs and set it.
1748 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1749 FI = ForwardRefVals.find(NameStr);
1750 if (FI != ForwardRefVals.end()) {
1751 if (FI->second.first->getType() != Inst->getType())
1752 return P.Error(NameLoc, "instruction forward referenced with type '" +
1753 FI->second.first->getType()->getDescription() + "'");
1754 FI->second.first->replaceAllUsesWith(Inst);
1755 delete FI->second.first;
1756 ForwardRefVals.erase(FI);
1759 // Set the name on the instruction.
1760 Inst->setName(NameStr);
1762 if (Inst->getNameStr() != NameStr)
1763 return P.Error(NameLoc, "multiple definition of local value named '" +
1768 /// GetBB - Get a basic block with the specified name or ID, creating a
1769 /// forward reference record if needed.
1770 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
1772 return cast_or_null<BasicBlock>(GetVal(Name,
1773 Type::getLabelTy(F.getContext()), Loc));
1776 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
1777 return cast_or_null<BasicBlock>(GetVal(ID,
1778 Type::getLabelTy(F.getContext()), Loc));
1781 /// DefineBB - Define the specified basic block, which is either named or
1782 /// unnamed. If there is an error, this returns null otherwise it returns
1783 /// the block being defined.
1784 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
1788 BB = GetBB(NumberedVals.size(), Loc);
1790 BB = GetBB(Name, Loc);
1791 if (BB == 0) return 0; // Already diagnosed error.
1793 // Move the block to the end of the function. Forward ref'd blocks are
1794 // inserted wherever they happen to be referenced.
1795 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
1797 // Remove the block from forward ref sets.
1799 ForwardRefValIDs.erase(NumberedVals.size());
1800 NumberedVals.push_back(BB);
1802 // BB forward references are already in the function symbol table.
1803 ForwardRefVals.erase(Name);
1809 //===----------------------------------------------------------------------===//
1811 //===----------------------------------------------------------------------===//
1813 /// ParseValID - Parse an abstract value that doesn't necessarily have a
1814 /// type implied. For example, if we parse "4" we don't know what integer type
1815 /// it has. The value will later be combined with its type and checked for
1817 bool LLParser::ParseValID(ValID &ID) {
1818 ID.Loc = Lex.getLoc();
1819 switch (Lex.getKind()) {
1820 default: return TokError("expected value token");
1821 case lltok::GlobalID: // @42
1822 ID.UIntVal = Lex.getUIntVal();
1823 ID.Kind = ValID::t_GlobalID;
1825 case lltok::GlobalVar: // @foo
1826 ID.StrVal = Lex.getStrVal();
1827 ID.Kind = ValID::t_GlobalName;
1829 case lltok::LocalVarID: // %42
1830 ID.UIntVal = Lex.getUIntVal();
1831 ID.Kind = ValID::t_LocalID;
1833 case lltok::LocalVar: // %foo
1834 case lltok::StringConstant: // "foo" - FIXME: REMOVE IN LLVM 3.0
1835 ID.StrVal = Lex.getStrVal();
1836 ID.Kind = ValID::t_LocalName;
1838 case lltok::Metadata: { // !{...} MDNode, !"foo" MDString
1839 ID.Kind = ValID::t_Metadata;
1841 if (Lex.getKind() == lltok::lbrace) {
1842 SmallVector<Value*, 16> Elts;
1843 if (ParseMDNodeVector(Elts) ||
1844 ParseToken(lltok::rbrace, "expected end of metadata node"))
1847 ID.MetadataVal = MDNode::get(Context, Elts.data(), Elts.size());
1851 // Standalone metadata reference
1852 // !{ ..., !42, ... }
1853 if (!ParseMDNode(ID.MetadataVal))
1857 // ::= '!' STRINGCONSTANT
1858 if (ParseMDString(ID.MetadataVal)) return true;
1859 ID.Kind = ValID::t_Metadata;
1863 ID.APSIntVal = Lex.getAPSIntVal();
1864 ID.Kind = ValID::t_APSInt;
1866 case lltok::APFloat:
1867 ID.APFloatVal = Lex.getAPFloatVal();
1868 ID.Kind = ValID::t_APFloat;
1870 case lltok::kw_true:
1871 ID.ConstantVal = ConstantInt::getTrue(Context);
1872 ID.Kind = ValID::t_Constant;
1874 case lltok::kw_false:
1875 ID.ConstantVal = ConstantInt::getFalse(Context);
1876 ID.Kind = ValID::t_Constant;
1878 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
1879 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
1880 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
1882 case lltok::lbrace: {
1883 // ValID ::= '{' ConstVector '}'
1885 SmallVector<Constant*, 16> Elts;
1886 if (ParseGlobalValueVector(Elts) ||
1887 ParseToken(lltok::rbrace, "expected end of struct constant"))
1890 ID.ConstantVal = ConstantStruct::get(Context, Elts.data(),
1891 Elts.size(), false);
1892 ID.Kind = ValID::t_Constant;
1896 // ValID ::= '<' ConstVector '>' --> Vector.
1897 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
1899 bool isPackedStruct = EatIfPresent(lltok::lbrace);
1901 SmallVector<Constant*, 16> Elts;
1902 LocTy FirstEltLoc = Lex.getLoc();
1903 if (ParseGlobalValueVector(Elts) ||
1905 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
1906 ParseToken(lltok::greater, "expected end of constant"))
1909 if (isPackedStruct) {
1911 ConstantStruct::get(Context, Elts.data(), Elts.size(), true);
1912 ID.Kind = ValID::t_Constant;
1917 return Error(ID.Loc, "constant vector must not be empty");
1919 if (!Elts[0]->getType()->isInteger() &&
1920 !Elts[0]->getType()->isFloatingPoint())
1921 return Error(FirstEltLoc,
1922 "vector elements must have integer or floating point type");
1924 // Verify that all the vector elements have the same type.
1925 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
1926 if (Elts[i]->getType() != Elts[0]->getType())
1927 return Error(FirstEltLoc,
1928 "vector element #" + utostr(i) +
1929 " is not of type '" + Elts[0]->getType()->getDescription());
1931 ID.ConstantVal = ConstantVector::get(Elts.data(), Elts.size());
1932 ID.Kind = ValID::t_Constant;
1935 case lltok::lsquare: { // Array Constant
1937 SmallVector<Constant*, 16> Elts;
1938 LocTy FirstEltLoc = Lex.getLoc();
1939 if (ParseGlobalValueVector(Elts) ||
1940 ParseToken(lltok::rsquare, "expected end of array constant"))
1943 // Handle empty element.
1945 // Use undef instead of an array because it's inconvenient to determine
1946 // the element type at this point, there being no elements to examine.
1947 ID.Kind = ValID::t_EmptyArray;
1951 if (!Elts[0]->getType()->isFirstClassType())
1952 return Error(FirstEltLoc, "invalid array element type: " +
1953 Elts[0]->getType()->getDescription());
1955 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
1957 // Verify all elements are correct type!
1958 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
1959 if (Elts[i]->getType() != Elts[0]->getType())
1960 return Error(FirstEltLoc,
1961 "array element #" + utostr(i) +
1962 " is not of type '" +Elts[0]->getType()->getDescription());
1965 ID.ConstantVal = ConstantArray::get(ATy, Elts.data(), Elts.size());
1966 ID.Kind = ValID::t_Constant;
1969 case lltok::kw_c: // c "foo"
1971 ID.ConstantVal = ConstantArray::get(Context, Lex.getStrVal(), false);
1972 if (ParseToken(lltok::StringConstant, "expected string")) return true;
1973 ID.Kind = ValID::t_Constant;
1976 case lltok::kw_asm: {
1977 // ValID ::= 'asm' SideEffect? STRINGCONSTANT ',' STRINGCONSTANT
1980 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
1981 ParseStringConstant(ID.StrVal) ||
1982 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
1983 ParseToken(lltok::StringConstant, "expected constraint string"))
1985 ID.StrVal2 = Lex.getStrVal();
1986 ID.UIntVal = HasSideEffect;
1987 ID.Kind = ValID::t_InlineAsm;
1991 case lltok::kw_trunc:
1992 case lltok::kw_zext:
1993 case lltok::kw_sext:
1994 case lltok::kw_fptrunc:
1995 case lltok::kw_fpext:
1996 case lltok::kw_bitcast:
1997 case lltok::kw_uitofp:
1998 case lltok::kw_sitofp:
1999 case lltok::kw_fptoui:
2000 case lltok::kw_fptosi:
2001 case lltok::kw_inttoptr:
2002 case lltok::kw_ptrtoint: {
2003 unsigned Opc = Lex.getUIntVal();
2004 PATypeHolder DestTy(Type::getVoidTy(Context));
2007 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2008 ParseGlobalTypeAndValue(SrcVal) ||
2009 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2010 ParseType(DestTy) ||
2011 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2013 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2014 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2015 SrcVal->getType()->getDescription() + "' to '" +
2016 DestTy->getDescription() + "'");
2017 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2019 ID.Kind = ValID::t_Constant;
2022 case lltok::kw_extractvalue: {
2025 SmallVector<unsigned, 4> Indices;
2026 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2027 ParseGlobalTypeAndValue(Val) ||
2028 ParseIndexList(Indices) ||
2029 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2031 if (!isa<StructType>(Val->getType()) && !isa<ArrayType>(Val->getType()))
2032 return Error(ID.Loc, "extractvalue operand must be array or struct");
2033 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
2035 return Error(ID.Loc, "invalid indices for extractvalue");
2037 ConstantExpr::getExtractValue(Val, Indices.data(), Indices.size());
2038 ID.Kind = ValID::t_Constant;
2041 case lltok::kw_insertvalue: {
2043 Constant *Val0, *Val1;
2044 SmallVector<unsigned, 4> Indices;
2045 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2046 ParseGlobalTypeAndValue(Val0) ||
2047 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2048 ParseGlobalTypeAndValue(Val1) ||
2049 ParseIndexList(Indices) ||
2050 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2052 if (!isa<StructType>(Val0->getType()) && !isa<ArrayType>(Val0->getType()))
2053 return Error(ID.Loc, "extractvalue operand must be array or struct");
2054 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
2056 return Error(ID.Loc, "invalid indices for insertvalue");
2057 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1,
2058 Indices.data(), Indices.size());
2059 ID.Kind = ValID::t_Constant;
2062 case lltok::kw_icmp:
2063 case lltok::kw_fcmp: {
2064 unsigned PredVal, Opc = Lex.getUIntVal();
2065 Constant *Val0, *Val1;
2067 if (ParseCmpPredicate(PredVal, Opc) ||
2068 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2069 ParseGlobalTypeAndValue(Val0) ||
2070 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2071 ParseGlobalTypeAndValue(Val1) ||
2072 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2075 if (Val0->getType() != Val1->getType())
2076 return Error(ID.Loc, "compare operands must have the same type");
2078 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2080 if (Opc == Instruction::FCmp) {
2081 if (!Val0->getType()->isFPOrFPVector())
2082 return Error(ID.Loc, "fcmp requires floating point operands");
2083 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2085 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2086 if (!Val0->getType()->isIntOrIntVector() &&
2087 !isa<PointerType>(Val0->getType()))
2088 return Error(ID.Loc, "icmp requires pointer or integer operands");
2089 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2091 ID.Kind = ValID::t_Constant;
2095 // Binary Operators.
2097 case lltok::kw_fadd:
2099 case lltok::kw_fsub:
2101 case lltok::kw_fmul:
2102 case lltok::kw_udiv:
2103 case lltok::kw_sdiv:
2104 case lltok::kw_fdiv:
2105 case lltok::kw_urem:
2106 case lltok::kw_srem:
2107 case lltok::kw_frem: {
2111 unsigned Opc = Lex.getUIntVal();
2112 Constant *Val0, *Val1;
2114 LocTy ModifierLoc = Lex.getLoc();
2115 if (Opc == Instruction::Add ||
2116 Opc == Instruction::Sub ||
2117 Opc == Instruction::Mul) {
2118 if (EatIfPresent(lltok::kw_nuw))
2120 if (EatIfPresent(lltok::kw_nsw)) {
2122 if (EatIfPresent(lltok::kw_nuw))
2125 } else if (Opc == Instruction::SDiv) {
2126 if (EatIfPresent(lltok::kw_exact))
2129 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2130 ParseGlobalTypeAndValue(Val0) ||
2131 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2132 ParseGlobalTypeAndValue(Val1) ||
2133 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2135 if (Val0->getType() != Val1->getType())
2136 return Error(ID.Loc, "operands of constexpr must have same type");
2137 if (!Val0->getType()->isIntOrIntVector()) {
2139 return Error(ModifierLoc, "nuw only applies to integer operations");
2141 return Error(ModifierLoc, "nsw only applies to integer operations");
2143 // API compatibility: Accept either integer or floating-point types with
2144 // add, sub, and mul.
2145 if (!Val0->getType()->isIntOrIntVector() &&
2146 !Val0->getType()->isFPOrFPVector())
2147 return Error(ID.Loc,"constexpr requires integer, fp, or vector operands");
2149 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2150 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2151 if (Exact) Flags |= SDivOperator::IsExact;
2152 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2154 ID.Kind = ValID::t_Constant;
2158 // Logical Operations
2160 case lltok::kw_lshr:
2161 case lltok::kw_ashr:
2164 case lltok::kw_xor: {
2165 unsigned Opc = Lex.getUIntVal();
2166 Constant *Val0, *Val1;
2168 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2169 ParseGlobalTypeAndValue(Val0) ||
2170 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2171 ParseGlobalTypeAndValue(Val1) ||
2172 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2174 if (Val0->getType() != Val1->getType())
2175 return Error(ID.Loc, "operands of constexpr must have same type");
2176 if (!Val0->getType()->isIntOrIntVector())
2177 return Error(ID.Loc,
2178 "constexpr requires integer or integer vector operands");
2179 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2180 ID.Kind = ValID::t_Constant;
2184 case lltok::kw_getelementptr:
2185 case lltok::kw_shufflevector:
2186 case lltok::kw_insertelement:
2187 case lltok::kw_extractelement:
2188 case lltok::kw_select: {
2189 unsigned Opc = Lex.getUIntVal();
2190 SmallVector<Constant*, 16> Elts;
2191 bool InBounds = false;
2193 if (Opc == Instruction::GetElementPtr)
2194 InBounds = EatIfPresent(lltok::kw_inbounds);
2195 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2196 ParseGlobalValueVector(Elts) ||
2197 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2200 if (Opc == Instruction::GetElementPtr) {
2201 if (Elts.size() == 0 || !isa<PointerType>(Elts[0]->getType()))
2202 return Error(ID.Loc, "getelementptr requires pointer operand");
2204 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(),
2205 (Value**)(Elts.data() + 1),
2207 return Error(ID.Loc, "invalid indices for getelementptr");
2208 ID.ConstantVal = InBounds ?
2209 ConstantExpr::getInBoundsGetElementPtr(Elts[0],
2212 ConstantExpr::getGetElementPtr(Elts[0],
2213 Elts.data() + 1, Elts.size() - 1);
2214 } else if (Opc == Instruction::Select) {
2215 if (Elts.size() != 3)
2216 return Error(ID.Loc, "expected three operands to select");
2217 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2219 return Error(ID.Loc, Reason);
2220 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2221 } else if (Opc == Instruction::ShuffleVector) {
2222 if (Elts.size() != 3)
2223 return Error(ID.Loc, "expected three operands to shufflevector");
2224 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2225 return Error(ID.Loc, "invalid operands to shufflevector");
2227 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2228 } else if (Opc == Instruction::ExtractElement) {
2229 if (Elts.size() != 2)
2230 return Error(ID.Loc, "expected two operands to extractelement");
2231 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2232 return Error(ID.Loc, "invalid extractelement operands");
2233 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2235 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2236 if (Elts.size() != 3)
2237 return Error(ID.Loc, "expected three operands to insertelement");
2238 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2239 return Error(ID.Loc, "invalid insertelement operands");
2241 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2244 ID.Kind = ValID::t_Constant;
2253 /// ParseGlobalValue - Parse a global value with the specified type.
2254 bool LLParser::ParseGlobalValue(const Type *Ty, Constant *&V) {
2257 return ParseValID(ID) ||
2258 ConvertGlobalValIDToValue(Ty, ID, V);
2261 /// ConvertGlobalValIDToValue - Apply a type to a ValID to get a fully resolved
2263 bool LLParser::ConvertGlobalValIDToValue(const Type *Ty, ValID &ID,
2265 if (isa<FunctionType>(Ty))
2266 return Error(ID.Loc, "functions are not values, refer to them as pointers");
2269 default: llvm_unreachable("Unknown ValID!");
2270 case ValID::t_Metadata:
2271 return Error(ID.Loc, "invalid use of metadata");
2272 case ValID::t_LocalID:
2273 case ValID::t_LocalName:
2274 return Error(ID.Loc, "invalid use of function-local name");
2275 case ValID::t_InlineAsm:
2276 return Error(ID.Loc, "inline asm can only be an operand of call/invoke");
2277 case ValID::t_GlobalName:
2278 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
2280 case ValID::t_GlobalID:
2281 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
2283 case ValID::t_APSInt:
2284 if (!isa<IntegerType>(Ty))
2285 return Error(ID.Loc, "integer constant must have integer type");
2286 ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
2287 V = ConstantInt::get(Context, ID.APSIntVal);
2289 case ValID::t_APFloat:
2290 if (!Ty->isFloatingPoint() ||
2291 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
2292 return Error(ID.Loc, "floating point constant invalid for type");
2294 // The lexer has no type info, so builds all float and double FP constants
2295 // as double. Fix this here. Long double does not need this.
2296 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble &&
2297 Ty == Type::getFloatTy(Context)) {
2299 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
2302 V = ConstantFP::get(Context, ID.APFloatVal);
2304 if (V->getType() != Ty)
2305 return Error(ID.Loc, "floating point constant does not have type '" +
2306 Ty->getDescription() + "'");
2310 if (!isa<PointerType>(Ty))
2311 return Error(ID.Loc, "null must be a pointer type");
2312 V = ConstantPointerNull::get(cast<PointerType>(Ty));
2314 case ValID::t_Undef:
2315 // FIXME: LabelTy should not be a first-class type.
2316 if ((!Ty->isFirstClassType() || Ty == Type::getLabelTy(Context)) &&
2317 !isa<OpaqueType>(Ty))
2318 return Error(ID.Loc, "invalid type for undef constant");
2319 V = UndefValue::get(Ty);
2321 case ValID::t_EmptyArray:
2322 if (!isa<ArrayType>(Ty) || cast<ArrayType>(Ty)->getNumElements() != 0)
2323 return Error(ID.Loc, "invalid empty array initializer");
2324 V = UndefValue::get(Ty);
2327 // FIXME: LabelTy should not be a first-class type.
2328 if (!Ty->isFirstClassType() || Ty == Type::getLabelTy(Context))
2329 return Error(ID.Loc, "invalid type for null constant");
2330 V = Constant::getNullValue(Ty);
2332 case ValID::t_Constant:
2333 if (ID.ConstantVal->getType() != Ty)
2334 return Error(ID.Loc, "constant expression type mismatch");
2340 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2341 PATypeHolder Type(Type::getVoidTy(Context));
2342 return ParseType(Type) ||
2343 ParseGlobalValue(Type, V);
2346 /// ParseGlobalValueVector
2348 /// ::= TypeAndValue (',' TypeAndValue)*
2349 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts) {
2351 if (Lex.getKind() == lltok::rbrace ||
2352 Lex.getKind() == lltok::rsquare ||
2353 Lex.getKind() == lltok::greater ||
2354 Lex.getKind() == lltok::rparen)
2358 if (ParseGlobalTypeAndValue(C)) return true;
2361 while (EatIfPresent(lltok::comma)) {
2362 if (ParseGlobalTypeAndValue(C)) return true;
2370 //===----------------------------------------------------------------------===//
2371 // Function Parsing.
2372 //===----------------------------------------------------------------------===//
2374 bool LLParser::ConvertValIDToValue(const Type *Ty, ValID &ID, Value *&V,
2375 PerFunctionState &PFS) {
2376 if (ID.Kind == ValID::t_LocalID)
2377 V = PFS.GetVal(ID.UIntVal, Ty, ID.Loc);
2378 else if (ID.Kind == ValID::t_LocalName)
2379 V = PFS.GetVal(ID.StrVal, Ty, ID.Loc);
2380 else if (ID.Kind == ValID::t_InlineAsm) {
2381 const PointerType *PTy = dyn_cast<PointerType>(Ty);
2382 const FunctionType *FTy =
2383 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
2384 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
2385 return Error(ID.Loc, "invalid type for inline asm constraint string");
2386 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal);
2388 } else if (ID.Kind == ValID::t_Metadata) {
2392 if (ConvertGlobalValIDToValue(Ty, ID, C)) return true;
2400 bool LLParser::ParseValue(const Type *Ty, Value *&V, PerFunctionState &PFS) {
2403 return ParseValID(ID) ||
2404 ConvertValIDToValue(Ty, ID, V, PFS);
2407 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState &PFS) {
2408 PATypeHolder T(Type::getVoidTy(Context));
2409 return ParseType(T) ||
2410 ParseValue(T, V, PFS);
2414 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
2415 /// Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
2416 /// OptionalAlign OptGC
2417 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
2418 // Parse the linkage.
2419 LocTy LinkageLoc = Lex.getLoc();
2422 unsigned Visibility, RetAttrs;
2424 PATypeHolder RetType(Type::getVoidTy(Context));
2425 LocTy RetTypeLoc = Lex.getLoc();
2426 if (ParseOptionalLinkage(Linkage) ||
2427 ParseOptionalVisibility(Visibility) ||
2428 ParseOptionalCallingConv(CC) ||
2429 ParseOptionalAttrs(RetAttrs, 1) ||
2430 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
2433 // Verify that the linkage is ok.
2434 switch ((GlobalValue::LinkageTypes)Linkage) {
2435 case GlobalValue::ExternalLinkage:
2436 break; // always ok.
2437 case GlobalValue::DLLImportLinkage:
2438 case GlobalValue::ExternalWeakLinkage:
2440 return Error(LinkageLoc, "invalid linkage for function definition");
2442 case GlobalValue::PrivateLinkage:
2443 case GlobalValue::LinkerPrivateLinkage:
2444 case GlobalValue::InternalLinkage:
2445 case GlobalValue::AvailableExternallyLinkage:
2446 case GlobalValue::LinkOnceAnyLinkage:
2447 case GlobalValue::LinkOnceODRLinkage:
2448 case GlobalValue::WeakAnyLinkage:
2449 case GlobalValue::WeakODRLinkage:
2450 case GlobalValue::DLLExportLinkage:
2452 return Error(LinkageLoc, "invalid linkage for function declaration");
2454 case GlobalValue::AppendingLinkage:
2455 case GlobalValue::GhostLinkage:
2456 case GlobalValue::CommonLinkage:
2457 return Error(LinkageLoc, "invalid function linkage type");
2460 if (!FunctionType::isValidReturnType(RetType) ||
2461 isa<OpaqueType>(RetType))
2462 return Error(RetTypeLoc, "invalid function return type");
2464 LocTy NameLoc = Lex.getLoc();
2466 std::string FunctionName;
2467 if (Lex.getKind() == lltok::GlobalVar) {
2468 FunctionName = Lex.getStrVal();
2469 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
2470 unsigned NameID = Lex.getUIntVal();
2472 if (NameID != NumberedVals.size())
2473 return TokError("function expected to be numbered '%" +
2474 utostr(NumberedVals.size()) + "'");
2476 return TokError("expected function name");
2481 if (Lex.getKind() != lltok::lparen)
2482 return TokError("expected '(' in function argument list");
2484 std::vector<ArgInfo> ArgList;
2487 std::string Section;
2491 if (ParseArgumentList(ArgList, isVarArg, false) ||
2492 ParseOptionalAttrs(FuncAttrs, 2) ||
2493 (EatIfPresent(lltok::kw_section) &&
2494 ParseStringConstant(Section)) ||
2495 ParseOptionalAlignment(Alignment) ||
2496 (EatIfPresent(lltok::kw_gc) &&
2497 ParseStringConstant(GC)))
2500 // If the alignment was parsed as an attribute, move to the alignment field.
2501 if (FuncAttrs & Attribute::Alignment) {
2502 Alignment = Attribute::getAlignmentFromAttrs(FuncAttrs);
2503 FuncAttrs &= ~Attribute::Alignment;
2506 // Okay, if we got here, the function is syntactically valid. Convert types
2507 // and do semantic checks.
2508 std::vector<const Type*> ParamTypeList;
2509 SmallVector<AttributeWithIndex, 8> Attrs;
2510 // FIXME : In 3.0, stop accepting zext, sext and inreg as optional function
2512 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
2513 if (FuncAttrs & ObsoleteFuncAttrs) {
2514 RetAttrs |= FuncAttrs & ObsoleteFuncAttrs;
2515 FuncAttrs &= ~ObsoleteFuncAttrs;
2518 if (RetAttrs != Attribute::None)
2519 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
2521 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2522 ParamTypeList.push_back(ArgList[i].Type);
2523 if (ArgList[i].Attrs != Attribute::None)
2524 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
2527 if (FuncAttrs != Attribute::None)
2528 Attrs.push_back(AttributeWithIndex::get(~0, FuncAttrs));
2530 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
2532 if (PAL.paramHasAttr(1, Attribute::StructRet) &&
2533 RetType != Type::getVoidTy(Context))
2534 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
2536 const FunctionType *FT =
2537 FunctionType::get(RetType, ParamTypeList, isVarArg);
2538 const PointerType *PFT = PointerType::getUnqual(FT);
2541 if (!FunctionName.empty()) {
2542 // If this was a definition of a forward reference, remove the definition
2543 // from the forward reference table and fill in the forward ref.
2544 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
2545 ForwardRefVals.find(FunctionName);
2546 if (FRVI != ForwardRefVals.end()) {
2547 Fn = M->getFunction(FunctionName);
2548 ForwardRefVals.erase(FRVI);
2549 } else if ((Fn = M->getFunction(FunctionName))) {
2550 // If this function already exists in the symbol table, then it is
2551 // multiply defined. We accept a few cases for old backwards compat.
2552 // FIXME: Remove this stuff for LLVM 3.0.
2553 if (Fn->getType() != PFT || Fn->getAttributes() != PAL ||
2554 (!Fn->isDeclaration() && isDefine)) {
2555 // If the redefinition has different type or different attributes,
2556 // reject it. If both have bodies, reject it.
2557 return Error(NameLoc, "invalid redefinition of function '" +
2558 FunctionName + "'");
2559 } else if (Fn->isDeclaration()) {
2560 // Make sure to strip off any argument names so we can't get conflicts.
2561 for (Function::arg_iterator AI = Fn->arg_begin(), AE = Fn->arg_end();
2568 // If this is a definition of a forward referenced function, make sure the
2570 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
2571 = ForwardRefValIDs.find(NumberedVals.size());
2572 if (I != ForwardRefValIDs.end()) {
2573 Fn = cast<Function>(I->second.first);
2574 if (Fn->getType() != PFT)
2575 return Error(NameLoc, "type of definition and forward reference of '@" +
2576 utostr(NumberedVals.size()) +"' disagree");
2577 ForwardRefValIDs.erase(I);
2582 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
2583 else // Move the forward-reference to the correct spot in the module.
2584 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
2586 if (FunctionName.empty())
2587 NumberedVals.push_back(Fn);
2589 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
2590 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
2591 Fn->setCallingConv(CC);
2592 Fn->setAttributes(PAL);
2593 Fn->setAlignment(Alignment);
2594 Fn->setSection(Section);
2595 if (!GC.empty()) Fn->setGC(GC.c_str());
2597 // Add all of the arguments we parsed to the function.
2598 Function::arg_iterator ArgIt = Fn->arg_begin();
2599 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
2600 // If the argument has a name, insert it into the argument symbol table.
2601 if (ArgList[i].Name.empty()) continue;
2603 // Set the name, if it conflicted, it will be auto-renamed.
2604 ArgIt->setName(ArgList[i].Name);
2606 if (ArgIt->getNameStr() != ArgList[i].Name)
2607 return Error(ArgList[i].Loc, "redefinition of argument '%" +
2608 ArgList[i].Name + "'");
2615 /// ParseFunctionBody
2616 /// ::= '{' BasicBlock+ '}'
2617 /// ::= 'begin' BasicBlock+ 'end' // FIXME: remove in LLVM 3.0
2619 bool LLParser::ParseFunctionBody(Function &Fn) {
2620 if (Lex.getKind() != lltok::lbrace && Lex.getKind() != lltok::kw_begin)
2621 return TokError("expected '{' in function body");
2622 Lex.Lex(); // eat the {.
2624 PerFunctionState PFS(*this, Fn);
2626 while (Lex.getKind() != lltok::rbrace && Lex.getKind() != lltok::kw_end)
2627 if (ParseBasicBlock(PFS)) return true;
2632 // Verify function is ok.
2633 return PFS.VerifyFunctionComplete();
2637 /// ::= LabelStr? Instruction*
2638 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
2639 // If this basic block starts out with a name, remember it.
2641 LocTy NameLoc = Lex.getLoc();
2642 if (Lex.getKind() == lltok::LabelStr) {
2643 Name = Lex.getStrVal();
2647 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
2648 if (BB == 0) return true;
2650 std::string NameStr;
2652 // Parse the instructions in this block until we get a terminator.
2655 // This instruction may have three possibilities for a name: a) none
2656 // specified, b) name specified "%foo =", c) number specified: "%4 =".
2657 LocTy NameLoc = Lex.getLoc();
2661 if (Lex.getKind() == lltok::LocalVarID) {
2662 NameID = Lex.getUIntVal();
2664 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
2666 } else if (Lex.getKind() == lltok::LocalVar ||
2667 // FIXME: REMOVE IN LLVM 3.0
2668 Lex.getKind() == lltok::StringConstant) {
2669 NameStr = Lex.getStrVal();
2671 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
2675 if (ParseInstruction(Inst, BB, PFS)) return true;
2676 if (EatIfPresent(lltok::comma))
2677 ParseOptionalDbgInfo();
2679 // Set metadata attached with this instruction.
2680 Metadata &TheMetadata = M->getContext().getMetadata();
2681 for (SmallVector<std::pair<MDKindID, MDNode *>, 2>::iterator
2682 MDI = MDsOnInst.begin(), MDE = MDsOnInst.end(); MDI != MDE; ++MDI)
2683 TheMetadata.setMD(MDI->first, MDI->second, Inst);
2686 BB->getInstList().push_back(Inst);
2688 // Set the name on the instruction.
2689 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
2690 } while (!isa<TerminatorInst>(Inst));
2695 //===----------------------------------------------------------------------===//
2696 // Instruction Parsing.
2697 //===----------------------------------------------------------------------===//
2699 /// ParseInstruction - Parse one of the many different instructions.
2701 bool LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
2702 PerFunctionState &PFS) {
2703 lltok::Kind Token = Lex.getKind();
2704 if (Token == lltok::Eof)
2705 return TokError("found end of file when expecting more instructions");
2706 LocTy Loc = Lex.getLoc();
2707 unsigned KeywordVal = Lex.getUIntVal();
2708 Lex.Lex(); // Eat the keyword.
2711 default: return Error(Loc, "expected instruction opcode");
2712 // Terminator Instructions.
2713 case lltok::kw_unwind: Inst = new UnwindInst(Context); return false;
2714 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
2715 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
2716 case lltok::kw_br: return ParseBr(Inst, PFS);
2717 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
2718 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
2719 // Binary Operators.
2722 case lltok::kw_mul: {
2725 LocTy ModifierLoc = Lex.getLoc();
2726 if (EatIfPresent(lltok::kw_nuw))
2728 if (EatIfPresent(lltok::kw_nsw)) {
2730 if (EatIfPresent(lltok::kw_nuw))
2733 // API compatibility: Accept either integer or floating-point types.
2734 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 0);
2736 if (!Inst->getType()->isIntOrIntVector()) {
2738 return Error(ModifierLoc, "nuw only applies to integer operations");
2740 return Error(ModifierLoc, "nsw only applies to integer operations");
2743 cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
2745 cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
2749 case lltok::kw_fadd:
2750 case lltok::kw_fsub:
2751 case lltok::kw_fmul: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
2753 case lltok::kw_sdiv: {
2755 if (EatIfPresent(lltok::kw_exact))
2757 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 1);
2760 cast<BinaryOperator>(Inst)->setIsExact(true);
2764 case lltok::kw_udiv:
2765 case lltok::kw_urem:
2766 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
2767 case lltok::kw_fdiv:
2768 case lltok::kw_frem: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
2770 case lltok::kw_lshr:
2771 case lltok::kw_ashr:
2774 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
2775 case lltok::kw_icmp:
2776 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
2778 case lltok::kw_trunc:
2779 case lltok::kw_zext:
2780 case lltok::kw_sext:
2781 case lltok::kw_fptrunc:
2782 case lltok::kw_fpext:
2783 case lltok::kw_bitcast:
2784 case lltok::kw_uitofp:
2785 case lltok::kw_sitofp:
2786 case lltok::kw_fptoui:
2787 case lltok::kw_fptosi:
2788 case lltok::kw_inttoptr:
2789 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
2791 case lltok::kw_select: return ParseSelect(Inst, PFS);
2792 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
2793 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
2794 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
2795 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
2796 case lltok::kw_phi: return ParsePHI(Inst, PFS);
2797 case lltok::kw_call: return ParseCall(Inst, PFS, false);
2798 case lltok::kw_tail: return ParseCall(Inst, PFS, true);
2800 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
2801 case lltok::kw_malloc: return ParseAlloc(Inst, PFS, BB, false);
2802 case lltok::kw_free: return ParseFree(Inst, PFS);
2803 case lltok::kw_load: return ParseLoad(Inst, PFS, false);
2804 case lltok::kw_store: return ParseStore(Inst, PFS, false);
2805 case lltok::kw_volatile:
2806 if (EatIfPresent(lltok::kw_load))
2807 return ParseLoad(Inst, PFS, true);
2808 else if (EatIfPresent(lltok::kw_store))
2809 return ParseStore(Inst, PFS, true);
2811 return TokError("expected 'load' or 'store'");
2812 case lltok::kw_getresult: return ParseGetResult(Inst, PFS);
2813 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
2814 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
2815 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
2819 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
2820 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
2821 if (Opc == Instruction::FCmp) {
2822 switch (Lex.getKind()) {
2823 default: TokError("expected fcmp predicate (e.g. 'oeq')");
2824 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
2825 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
2826 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
2827 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
2828 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
2829 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
2830 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
2831 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
2832 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
2833 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
2834 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
2835 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
2836 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
2837 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
2838 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
2839 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
2842 switch (Lex.getKind()) {
2843 default: TokError("expected icmp predicate (e.g. 'eq')");
2844 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
2845 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
2846 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
2847 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
2848 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
2849 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
2850 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
2851 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
2852 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
2853 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
2860 //===----------------------------------------------------------------------===//
2861 // Terminator Instructions.
2862 //===----------------------------------------------------------------------===//
2864 /// ParseRet - Parse a return instruction.
2865 /// ::= 'ret' void (',' 'dbg' !1)
2866 /// ::= 'ret' TypeAndValue (',' 'dbg' !1)
2867 /// ::= 'ret' TypeAndValue (',' TypeAndValue)+ (',' 'dbg' !1)
2868 /// [[obsolete: LLVM 3.0]]
2869 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
2870 PerFunctionState &PFS) {
2871 PATypeHolder Ty(Type::getVoidTy(Context));
2872 if (ParseType(Ty, true /*void allowed*/)) return true;
2874 if (Ty == Type::getVoidTy(Context)) {
2875 if (EatIfPresent(lltok::comma))
2876 if (ParseOptionalDbgInfo()) return true;
2877 Inst = ReturnInst::Create(Context);
2882 if (ParseValue(Ty, RV, PFS)) return true;
2884 if (EatIfPresent(lltok::comma)) {
2885 // Parse optional 'dbg'
2886 if (Lex.getKind() == lltok::kw_dbg) {
2887 if (ParseOptionalDbgInfo()) return true;
2889 // The normal case is one return value.
2890 // FIXME: LLVM 3.0 remove MRV support for 'ret i32 1, i32 2', requiring use
2891 // of 'ret {i32,i32} {i32 1, i32 2}'
2892 SmallVector<Value*, 8> RVs;
2896 // If optional 'dbg' is seen then this is the end of MRV.
2897 if (Lex.getKind() == lltok::kw_dbg)
2899 if (ParseTypeAndValue(RV, PFS)) return true;
2901 } while (EatIfPresent(lltok::comma));
2903 RV = UndefValue::get(PFS.getFunction().getReturnType());
2904 for (unsigned i = 0, e = RVs.size(); i != e; ++i) {
2905 Instruction *I = InsertValueInst::Create(RV, RVs[i], i, "mrv");
2906 BB->getInstList().push_back(I);
2911 if (EatIfPresent(lltok::comma))
2912 if (ParseOptionalDbgInfo()) return true;
2914 Inst = ReturnInst::Create(Context, RV);
2920 /// ::= 'br' TypeAndValue
2921 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
2922 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
2924 Value *Op0, *Op1, *Op2;
2925 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
2927 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
2928 Inst = BranchInst::Create(BB);
2932 if (Op0->getType() != Type::getInt1Ty(Context))
2933 return Error(Loc, "branch condition must have 'i1' type");
2935 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
2936 ParseTypeAndValue(Op1, Loc, PFS) ||
2937 ParseToken(lltok::comma, "expected ',' after true destination") ||
2938 ParseTypeAndValue(Op2, Loc2, PFS))
2941 if (!isa<BasicBlock>(Op1))
2942 return Error(Loc, "true destination of branch must be a basic block");
2943 if (!isa<BasicBlock>(Op2))
2944 return Error(Loc2, "true destination of branch must be a basic block");
2946 Inst = BranchInst::Create(cast<BasicBlock>(Op1), cast<BasicBlock>(Op2), Op0);
2952 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
2954 /// ::= (TypeAndValue ',' TypeAndValue)*
2955 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
2956 LocTy CondLoc, BBLoc;
2957 Value *Cond, *DefaultBB;
2958 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
2959 ParseToken(lltok::comma, "expected ',' after switch condition") ||
2960 ParseTypeAndValue(DefaultBB, BBLoc, PFS) ||
2961 ParseToken(lltok::lsquare, "expected '[' with switch table"))
2964 if (!isa<IntegerType>(Cond->getType()))
2965 return Error(CondLoc, "switch condition must have integer type");
2966 if (!isa<BasicBlock>(DefaultBB))
2967 return Error(BBLoc, "default destination must be a basic block");
2969 // Parse the jump table pairs.
2970 SmallPtrSet<Value*, 32> SeenCases;
2971 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
2972 while (Lex.getKind() != lltok::rsquare) {
2973 Value *Constant, *DestBB;
2975 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
2976 ParseToken(lltok::comma, "expected ',' after case value") ||
2977 ParseTypeAndValue(DestBB, BBLoc, PFS))
2980 if (!SeenCases.insert(Constant))
2981 return Error(CondLoc, "duplicate case value in switch");
2982 if (!isa<ConstantInt>(Constant))
2983 return Error(CondLoc, "case value is not a constant integer");
2984 if (!isa<BasicBlock>(DestBB))
2985 return Error(BBLoc, "case destination is not a basic block");
2987 Table.push_back(std::make_pair(cast<ConstantInt>(Constant),
2988 cast<BasicBlock>(DestBB)));
2991 Lex.Lex(); // Eat the ']'.
2993 SwitchInst *SI = SwitchInst::Create(Cond, cast<BasicBlock>(DefaultBB),
2995 for (unsigned i = 0, e = Table.size(); i != e; ++i)
2996 SI->addCase(Table[i].first, Table[i].second);
3002 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3003 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3004 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3005 LocTy CallLoc = Lex.getLoc();
3006 unsigned RetAttrs, FnAttrs;
3008 PATypeHolder RetType(Type::getVoidTy(Context));
3011 SmallVector<ParamInfo, 16> ArgList;
3013 Value *NormalBB, *UnwindBB;
3014 if (ParseOptionalCallingConv(CC) ||
3015 ParseOptionalAttrs(RetAttrs, 1) ||
3016 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3017 ParseValID(CalleeID) ||
3018 ParseParameterList(ArgList, PFS) ||
3019 ParseOptionalAttrs(FnAttrs, 2) ||
3020 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3021 ParseTypeAndValue(NormalBB, PFS) ||
3022 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3023 ParseTypeAndValue(UnwindBB, PFS))
3026 if (!isa<BasicBlock>(NormalBB))
3027 return Error(CallLoc, "normal destination is not a basic block");
3028 if (!isa<BasicBlock>(UnwindBB))
3029 return Error(CallLoc, "unwind destination is not a basic block");
3031 // If RetType is a non-function pointer type, then this is the short syntax
3032 // for the call, which means that RetType is just the return type. Infer the
3033 // rest of the function argument types from the arguments that are present.
3034 const PointerType *PFTy = 0;
3035 const FunctionType *Ty = 0;
3036 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3037 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3038 // Pull out the types of all of the arguments...
3039 std::vector<const Type*> ParamTypes;
3040 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3041 ParamTypes.push_back(ArgList[i].V->getType());
3043 if (!FunctionType::isValidReturnType(RetType))
3044 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3046 Ty = FunctionType::get(RetType, ParamTypes, false);
3047 PFTy = PointerType::getUnqual(Ty);
3050 // Look up the callee.
3052 if (ConvertValIDToValue(PFTy, CalleeID, Callee, PFS)) return true;
3054 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
3055 // function attributes.
3056 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
3057 if (FnAttrs & ObsoleteFuncAttrs) {
3058 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
3059 FnAttrs &= ~ObsoleteFuncAttrs;
3062 // Set up the Attributes for the function.
3063 SmallVector<AttributeWithIndex, 8> Attrs;
3064 if (RetAttrs != Attribute::None)
3065 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3067 SmallVector<Value*, 8> Args;
3069 // Loop through FunctionType's arguments and ensure they are specified
3070 // correctly. Also, gather any parameter attributes.
3071 FunctionType::param_iterator I = Ty->param_begin();
3072 FunctionType::param_iterator E = Ty->param_end();
3073 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3074 const Type *ExpectedTy = 0;
3077 } else if (!Ty->isVarArg()) {
3078 return Error(ArgList[i].Loc, "too many arguments specified");
3081 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3082 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3083 ExpectedTy->getDescription() + "'");
3084 Args.push_back(ArgList[i].V);
3085 if (ArgList[i].Attrs != Attribute::None)
3086 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3090 return Error(CallLoc, "not enough parameters specified for call");
3092 if (FnAttrs != Attribute::None)
3093 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3095 // Finish off the Attributes and check them
3096 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3098 InvokeInst *II = InvokeInst::Create(Callee, cast<BasicBlock>(NormalBB),
3099 cast<BasicBlock>(UnwindBB),
3100 Args.begin(), Args.end());
3101 II->setCallingConv(CC);
3102 II->setAttributes(PAL);
3109 //===----------------------------------------------------------------------===//
3110 // Binary Operators.
3111 //===----------------------------------------------------------------------===//
3114 /// ::= ArithmeticOps TypeAndValue ',' Value
3116 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3117 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3118 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3119 unsigned Opc, unsigned OperandType) {
3120 LocTy Loc; Value *LHS, *RHS;
3121 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3122 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3123 ParseValue(LHS->getType(), RHS, PFS))
3127 switch (OperandType) {
3128 default: llvm_unreachable("Unknown operand type!");
3129 case 0: // int or FP.
3130 Valid = LHS->getType()->isIntOrIntVector() ||
3131 LHS->getType()->isFPOrFPVector();
3133 case 1: Valid = LHS->getType()->isIntOrIntVector(); break;
3134 case 2: Valid = LHS->getType()->isFPOrFPVector(); break;
3138 return Error(Loc, "invalid operand type for instruction");
3140 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3145 /// ::= ArithmeticOps TypeAndValue ',' Value {
3146 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3148 LocTy Loc; Value *LHS, *RHS;
3149 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3150 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3151 ParseValue(LHS->getType(), RHS, PFS))
3154 if (!LHS->getType()->isIntOrIntVector())
3155 return Error(Loc,"instruction requires integer or integer vector operands");
3157 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3163 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3164 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3165 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3167 // Parse the integer/fp comparison predicate.
3171 if (ParseCmpPredicate(Pred, Opc) ||
3172 ParseTypeAndValue(LHS, Loc, PFS) ||
3173 ParseToken(lltok::comma, "expected ',' after compare value") ||
3174 ParseValue(LHS->getType(), RHS, PFS))
3177 if (Opc == Instruction::FCmp) {
3178 if (!LHS->getType()->isFPOrFPVector())
3179 return Error(Loc, "fcmp requires floating point operands");
3180 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3182 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
3183 if (!LHS->getType()->isIntOrIntVector() &&
3184 !isa<PointerType>(LHS->getType()))
3185 return Error(Loc, "icmp requires integer operands");
3186 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3191 //===----------------------------------------------------------------------===//
3192 // Other Instructions.
3193 //===----------------------------------------------------------------------===//
3197 /// ::= CastOpc TypeAndValue 'to' Type
3198 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
3200 LocTy Loc; Value *Op;
3201 PATypeHolder DestTy(Type::getVoidTy(Context));
3202 if (ParseTypeAndValue(Op, Loc, PFS) ||
3203 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
3207 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
3208 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
3209 return Error(Loc, "invalid cast opcode for cast from '" +
3210 Op->getType()->getDescription() + "' to '" +
3211 DestTy->getDescription() + "'");
3213 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
3218 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3219 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
3221 Value *Op0, *Op1, *Op2;
3222 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3223 ParseToken(lltok::comma, "expected ',' after select condition") ||
3224 ParseTypeAndValue(Op1, PFS) ||
3225 ParseToken(lltok::comma, "expected ',' after select value") ||
3226 ParseTypeAndValue(Op2, PFS))
3229 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
3230 return Error(Loc, Reason);
3232 Inst = SelectInst::Create(Op0, Op1, Op2);
3237 /// ::= 'va_arg' TypeAndValue ',' Type
3238 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
3240 PATypeHolder EltTy(Type::getVoidTy(Context));
3242 if (ParseTypeAndValue(Op, PFS) ||
3243 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
3244 ParseType(EltTy, TypeLoc))
3247 if (!EltTy->isFirstClassType())
3248 return Error(TypeLoc, "va_arg requires operand with first class type");
3250 Inst = new VAArgInst(Op, EltTy);
3254 /// ParseExtractElement
3255 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
3256 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
3259 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3260 ParseToken(lltok::comma, "expected ',' after extract value") ||
3261 ParseTypeAndValue(Op1, PFS))
3264 if (!ExtractElementInst::isValidOperands(Op0, Op1))
3265 return Error(Loc, "invalid extractelement operands");
3267 Inst = ExtractElementInst::Create(Op0, Op1);
3271 /// ParseInsertElement
3272 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3273 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
3275 Value *Op0, *Op1, *Op2;
3276 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3277 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3278 ParseTypeAndValue(Op1, PFS) ||
3279 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3280 ParseTypeAndValue(Op2, PFS))
3283 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
3284 return Error(Loc, "invalid insertelement operands");
3286 Inst = InsertElementInst::Create(Op0, Op1, Op2);
3290 /// ParseShuffleVector
3291 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3292 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
3294 Value *Op0, *Op1, *Op2;
3295 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3296 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
3297 ParseTypeAndValue(Op1, PFS) ||
3298 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
3299 ParseTypeAndValue(Op2, PFS))
3302 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
3303 return Error(Loc, "invalid extractelement operands");
3305 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
3310 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Valueß ']')*
3311 bool LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
3312 PATypeHolder Ty(Type::getVoidTy(Context));
3314 LocTy TypeLoc = Lex.getLoc();
3316 if (ParseType(Ty) ||
3317 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3318 ParseValue(Ty, Op0, PFS) ||
3319 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3320 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3321 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3324 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
3326 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
3328 if (!EatIfPresent(lltok::comma))
3331 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3332 ParseValue(Ty, Op0, PFS) ||
3333 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3334 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3335 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3339 if (!Ty->isFirstClassType())
3340 return Error(TypeLoc, "phi node must have first class type");
3342 PHINode *PN = PHINode::Create(Ty);
3343 PN->reserveOperandSpace(PHIVals.size());
3344 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
3345 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
3351 /// ::= 'tail'? 'call' OptionalCallingConv OptionalAttrs Type Value
3352 /// ParameterList OptionalAttrs
3353 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
3355 unsigned RetAttrs, FnAttrs;
3357 PATypeHolder RetType(Type::getVoidTy(Context));
3360 SmallVector<ParamInfo, 16> ArgList;
3361 LocTy CallLoc = Lex.getLoc();
3363 if ((isTail && ParseToken(lltok::kw_call, "expected 'tail call'")) ||
3364 ParseOptionalCallingConv(CC) ||
3365 ParseOptionalAttrs(RetAttrs, 1) ||
3366 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3367 ParseValID(CalleeID) ||
3368 ParseParameterList(ArgList, PFS) ||
3369 ParseOptionalAttrs(FnAttrs, 2))
3372 // If RetType is a non-function pointer type, then this is the short syntax
3373 // for the call, which means that RetType is just the return type. Infer the
3374 // rest of the function argument types from the arguments that are present.
3375 const PointerType *PFTy = 0;
3376 const FunctionType *Ty = 0;
3377 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3378 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3379 // Pull out the types of all of the arguments...
3380 std::vector<const Type*> ParamTypes;
3381 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3382 ParamTypes.push_back(ArgList[i].V->getType());
3384 if (!FunctionType::isValidReturnType(RetType))
3385 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3387 Ty = FunctionType::get(RetType, ParamTypes, false);
3388 PFTy = PointerType::getUnqual(Ty);
3391 // Look up the callee.
3393 if (ConvertValIDToValue(PFTy, CalleeID, Callee, PFS)) return true;
3395 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
3396 // function attributes.
3397 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
3398 if (FnAttrs & ObsoleteFuncAttrs) {
3399 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
3400 FnAttrs &= ~ObsoleteFuncAttrs;
3403 // Set up the Attributes for the function.
3404 SmallVector<AttributeWithIndex, 8> Attrs;
3405 if (RetAttrs != Attribute::None)
3406 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3408 SmallVector<Value*, 8> Args;
3410 // Loop through FunctionType's arguments and ensure they are specified
3411 // correctly. Also, gather any parameter attributes.
3412 FunctionType::param_iterator I = Ty->param_begin();
3413 FunctionType::param_iterator E = Ty->param_end();
3414 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3415 const Type *ExpectedTy = 0;
3418 } else if (!Ty->isVarArg()) {
3419 return Error(ArgList[i].Loc, "too many arguments specified");
3422 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3423 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3424 ExpectedTy->getDescription() + "'");
3425 Args.push_back(ArgList[i].V);
3426 if (ArgList[i].Attrs != Attribute::None)
3427 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3431 return Error(CallLoc, "not enough parameters specified for call");
3433 if (FnAttrs != Attribute::None)
3434 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3436 // Finish off the Attributes and check them
3437 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3439 CallInst *CI = CallInst::Create(Callee, Args.begin(), Args.end());
3440 CI->setTailCall(isTail);
3441 CI->setCallingConv(CC);
3442 CI->setAttributes(PAL);
3447 //===----------------------------------------------------------------------===//
3448 // Memory Instructions.
3449 //===----------------------------------------------------------------------===//
3452 /// ::= 'malloc' Type (',' TypeAndValue)? (',' OptionalInfo)?
3453 /// ::= 'alloca' Type (',' TypeAndValue)? (',' OptionalInfo)?
3454 bool LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS,
3455 BasicBlock* BB, bool isAlloca) {
3456 PATypeHolder Ty(Type::getVoidTy(Context));
3459 unsigned Alignment = 0;
3460 if (ParseType(Ty)) return true;
3462 if (EatIfPresent(lltok::comma)) {
3463 if (Lex.getKind() == lltok::kw_align || Lex.getKind() == lltok::kw_dbg) {
3464 if (ParseOptionalInfo(Alignment)) return true;
3466 if (ParseTypeAndValue(Size, SizeLoc, PFS)) return true;
3467 if (EatIfPresent(lltok::comma))
3468 if (ParseOptionalInfo(Alignment)) return true;
3472 if (Size && Size->getType() != Type::getInt32Ty(Context))
3473 return Error(SizeLoc, "element count must be i32");
3476 Inst = new AllocaInst(Ty, Size, Alignment);
3478 // Autoupgrade old malloc instruction to malloc call.
3479 const Type* IntPtrTy = Type::getInt32Ty(Context);
3480 const Type* Int8PtrTy = PointerType::getUnqual(Type::getInt8Ty(Context));
3482 // Prototype malloc as "void *autoupgrade_malloc(int32)".
3483 MallocF = cast<Function>(M->getOrInsertFunction("autoupgrade_malloc",
3484 Int8PtrTy, IntPtrTy, NULL));
3485 // "autoupgrade_malloc" updated to "malloc" in ValidateEndOfModule().
3487 Inst = cast<Instruction>(CallInst::CreateMalloc(BB, IntPtrTy, Ty,
3494 /// ::= 'free' TypeAndValue
3495 bool LLParser::ParseFree(Instruction *&Inst, PerFunctionState &PFS) {
3496 Value *Val; LocTy Loc;
3497 if (ParseTypeAndValue(Val, Loc, PFS)) return true;
3498 if (!isa<PointerType>(Val->getType()))
3499 return Error(Loc, "operand to free must be a pointer");
3500 Inst = new FreeInst(Val);
3505 /// ::= 'volatile'? 'load' TypeAndValue (',' OptionalInfo)?
3506 bool LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS,
3508 Value *Val; LocTy Loc;
3509 unsigned Alignment = 0;
3510 if (ParseTypeAndValue(Val, Loc, PFS)) return true;
3512 if (EatIfPresent(lltok::comma))
3513 if (ParseOptionalInfo(Alignment)) return true;
3515 if (!isa<PointerType>(Val->getType()) ||
3516 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
3517 return Error(Loc, "load operand must be a pointer to a first class type");
3519 Inst = new LoadInst(Val, "", isVolatile, Alignment);
3524 /// ::= 'volatile'? 'store' TypeAndValue ',' TypeAndValue (',' 'align' i32)?
3525 bool LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS,
3527 Value *Val, *Ptr; LocTy Loc, PtrLoc;
3528 unsigned Alignment = 0;
3529 if (ParseTypeAndValue(Val, Loc, PFS) ||
3530 ParseToken(lltok::comma, "expected ',' after store operand") ||
3531 ParseTypeAndValue(Ptr, PtrLoc, PFS))
3534 if (EatIfPresent(lltok::comma))
3535 if (ParseOptionalInfo(Alignment)) return true;
3537 if (!isa<PointerType>(Ptr->getType()))
3538 return Error(PtrLoc, "store operand must be a pointer");
3539 if (!Val->getType()->isFirstClassType())
3540 return Error(Loc, "store operand must be a first class value");
3541 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
3542 return Error(Loc, "stored value and pointer type do not match");
3544 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment);
3549 /// ::= 'getresult' TypeAndValue ',' i32
3550 /// FIXME: Remove support for getresult in LLVM 3.0
3551 bool LLParser::ParseGetResult(Instruction *&Inst, PerFunctionState &PFS) {
3552 Value *Val; LocTy ValLoc, EltLoc;
3554 if (ParseTypeAndValue(Val, ValLoc, PFS) ||
3555 ParseToken(lltok::comma, "expected ',' after getresult operand") ||
3556 ParseUInt32(Element, EltLoc))
3559 if (!isa<StructType>(Val->getType()) && !isa<ArrayType>(Val->getType()))
3560 return Error(ValLoc, "getresult inst requires an aggregate operand");
3561 if (!ExtractValueInst::getIndexedType(Val->getType(), Element))
3562 return Error(EltLoc, "invalid getresult index for value");
3563 Inst = ExtractValueInst::Create(Val, Element);
3567 /// ParseGetElementPtr
3568 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
3569 bool LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
3570 Value *Ptr, *Val; LocTy Loc, EltLoc;
3572 bool InBounds = EatIfPresent(lltok::kw_inbounds);
3574 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
3576 if (!isa<PointerType>(Ptr->getType()))
3577 return Error(Loc, "base of getelementptr must be a pointer");
3579 SmallVector<Value*, 16> Indices;
3580 while (EatIfPresent(lltok::comma)) {
3581 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
3582 if (!isa<IntegerType>(Val->getType()))
3583 return Error(EltLoc, "getelementptr index must be an integer");
3584 Indices.push_back(Val);
3587 if (!GetElementPtrInst::getIndexedType(Ptr->getType(),
3588 Indices.begin(), Indices.end()))
3589 return Error(Loc, "invalid getelementptr indices");
3590 Inst = GetElementPtrInst::Create(Ptr, Indices.begin(), Indices.end());
3592 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
3596 /// ParseExtractValue
3597 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
3598 bool LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
3599 Value *Val; LocTy Loc;
3600 SmallVector<unsigned, 4> Indices;
3601 if (ParseTypeAndValue(Val, Loc, PFS) ||
3602 ParseIndexList(Indices))
3605 if (!isa<StructType>(Val->getType()) && !isa<ArrayType>(Val->getType()))
3606 return Error(Loc, "extractvalue operand must be array or struct");
3608 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
3610 return Error(Loc, "invalid indices for extractvalue");
3611 Inst = ExtractValueInst::Create(Val, Indices.begin(), Indices.end());
3615 /// ParseInsertValue
3616 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
3617 bool LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
3618 Value *Val0, *Val1; LocTy Loc0, Loc1;
3619 SmallVector<unsigned, 4> Indices;
3620 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
3621 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
3622 ParseTypeAndValue(Val1, Loc1, PFS) ||
3623 ParseIndexList(Indices))
3626 if (!isa<StructType>(Val0->getType()) && !isa<ArrayType>(Val0->getType()))
3627 return Error(Loc0, "extractvalue operand must be array or struct");
3629 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
3631 return Error(Loc0, "invalid indices for insertvalue");
3632 Inst = InsertValueInst::Create(Val0, Val1, Indices.begin(), Indices.end());
3636 //===----------------------------------------------------------------------===//
3637 // Embedded metadata.
3638 //===----------------------------------------------------------------------===//
3640 /// ParseMDNodeVector
3641 /// ::= Element (',' Element)*
3643 /// ::= 'null' | TypeAndValue
3644 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts) {
3645 assert(Lex.getKind() == lltok::lbrace);
3649 if (Lex.getKind() == lltok::kw_null) {
3653 PATypeHolder Ty(Type::getVoidTy(Context));
3654 if (ParseType(Ty)) return true;
3655 if (Lex.getKind() == lltok::Metadata) {
3657 MetadataBase *Node = 0;
3658 if (!ParseMDNode(Node))
3661 MetadataBase *MDS = 0;
3662 if (ParseMDString(MDS)) return true;
3667 if (ParseGlobalValue(Ty, C)) return true;
3672 } while (EatIfPresent(lltok::comma));