1 //===-- LLParser.cpp - Parser Class ---------------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines the parser class for .ll files.
12 //===----------------------------------------------------------------------===//
15 #include "llvm/AutoUpgrade.h"
16 #include "llvm/CallingConv.h"
17 #include "llvm/Constants.h"
18 #include "llvm/DerivedTypes.h"
19 #include "llvm/InlineAsm.h"
20 #include "llvm/Instructions.h"
21 #include "llvm/Module.h"
22 #include "llvm/Operator.h"
23 #include "llvm/ValueSymbolTable.h"
24 #include "llvm/ADT/SmallPtrSet.h"
25 #include "llvm/ADT/StringExtras.h"
26 #include "llvm/Support/ErrorHandling.h"
27 #include "llvm/Support/raw_ostream.h"
30 /// Run: module ::= toplevelentity*
31 bool LLParser::Run() {
35 return ParseTopLevelEntities() ||
36 ValidateEndOfModule();
39 /// ValidateEndOfModule - Do final validity and sanity checks at the end of the
41 bool LLParser::ValidateEndOfModule() {
42 // Update auto-upgraded malloc calls to "malloc".
43 // FIXME: Remove in LLVM 3.0.
45 MallocF->setName("malloc");
46 // If setName() does not set the name to "malloc", then there is already a
47 // declaration of "malloc". In that case, iterate over all calls to MallocF
48 // and get them to call the declared "malloc" instead.
49 if (MallocF->getName() != "malloc") {
50 Constant *RealMallocF = M->getFunction("malloc");
51 if (RealMallocF->getType() != MallocF->getType())
52 RealMallocF = ConstantExpr::getBitCast(RealMallocF, MallocF->getType());
53 MallocF->replaceAllUsesWith(RealMallocF);
54 MallocF->eraseFromParent();
60 // If there are entries in ForwardRefBlockAddresses at this point, they are
61 // references after the function was defined. Resolve those now.
62 while (!ForwardRefBlockAddresses.empty()) {
63 // Okay, we are referencing an already-parsed function, resolve them now.
65 const ValID &Fn = ForwardRefBlockAddresses.begin()->first;
66 if (Fn.Kind == ValID::t_GlobalName)
67 TheFn = M->getFunction(Fn.StrVal);
68 else if (Fn.UIntVal < NumberedVals.size())
69 TheFn = dyn_cast<Function>(NumberedVals[Fn.UIntVal]);
72 return Error(Fn.Loc, "unknown function referenced by blockaddress");
74 // Resolve all these references.
75 if (ResolveForwardRefBlockAddresses(TheFn,
76 ForwardRefBlockAddresses.begin()->second,
80 ForwardRefBlockAddresses.erase(ForwardRefBlockAddresses.begin());
84 if (!ForwardRefTypes.empty())
85 return Error(ForwardRefTypes.begin()->second.second,
86 "use of undefined type named '" +
87 ForwardRefTypes.begin()->first + "'");
88 if (!ForwardRefTypeIDs.empty())
89 return Error(ForwardRefTypeIDs.begin()->second.second,
90 "use of undefined type '%" +
91 utostr(ForwardRefTypeIDs.begin()->first) + "'");
93 if (!ForwardRefVals.empty())
94 return Error(ForwardRefVals.begin()->second.second,
95 "use of undefined value '@" + ForwardRefVals.begin()->first +
98 if (!ForwardRefValIDs.empty())
99 return Error(ForwardRefValIDs.begin()->second.second,
100 "use of undefined value '@" +
101 utostr(ForwardRefValIDs.begin()->first) + "'");
103 if (!ForwardRefMDNodes.empty())
104 return Error(ForwardRefMDNodes.begin()->second.second,
105 "use of undefined metadata '!" +
106 utostr(ForwardRefMDNodes.begin()->first) + "'");
109 // Look for intrinsic functions and CallInst that need to be upgraded
110 for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; )
111 UpgradeCallsToIntrinsic(FI++); // must be post-increment, as we remove
113 // Check debug info intrinsics.
114 CheckDebugInfoIntrinsics(M);
118 bool LLParser::ResolveForwardRefBlockAddresses(Function *TheFn,
119 std::vector<std::pair<ValID, GlobalValue*> > &Refs,
120 PerFunctionState *PFS) {
121 // Loop over all the references, resolving them.
122 for (unsigned i = 0, e = Refs.size(); i != e; ++i) {
125 if (Refs[i].first.Kind == ValID::t_LocalName)
126 Res = PFS->GetBB(Refs[i].first.StrVal, Refs[i].first.Loc);
128 Res = PFS->GetBB(Refs[i].first.UIntVal, Refs[i].first.Loc);
129 } else if (Refs[i].first.Kind == ValID::t_LocalID) {
130 return Error(Refs[i].first.Loc,
131 "cannot take address of numeric label after the function is defined");
133 Res = dyn_cast_or_null<BasicBlock>(
134 TheFn->getValueSymbolTable().lookup(Refs[i].first.StrVal));
138 return Error(Refs[i].first.Loc,
139 "referenced value is not a basic block");
141 // Get the BlockAddress for this and update references to use it.
142 BlockAddress *BA = BlockAddress::get(TheFn, Res);
143 Refs[i].second->replaceAllUsesWith(BA);
144 Refs[i].second->eraseFromParent();
150 //===----------------------------------------------------------------------===//
151 // Top-Level Entities
152 //===----------------------------------------------------------------------===//
154 bool LLParser::ParseTopLevelEntities() {
156 switch (Lex.getKind()) {
157 default: return TokError("expected top-level entity");
158 case lltok::Eof: return false;
159 //case lltok::kw_define:
160 case lltok::kw_declare: if (ParseDeclare()) return true; break;
161 case lltok::kw_define: if (ParseDefine()) return true; break;
162 case lltok::kw_module: if (ParseModuleAsm()) return true; break;
163 case lltok::kw_target: if (ParseTargetDefinition()) return true; break;
164 case lltok::kw_deplibs: if (ParseDepLibs()) return true; break;
165 case lltok::kw_type: if (ParseUnnamedType()) return true; break;
166 case lltok::LocalVarID: if (ParseUnnamedType()) return true; break;
167 case lltok::StringConstant: // FIXME: REMOVE IN LLVM 3.0
168 case lltok::LocalVar: if (ParseNamedType()) return true; break;
169 case lltok::GlobalID: if (ParseUnnamedGlobal()) return true; break;
170 case lltok::GlobalVar: if (ParseNamedGlobal()) return true; break;
171 case lltok::Metadata: if (ParseStandaloneMetadata()) return true; break;
172 case lltok::NamedOrCustomMD: if (ParseNamedMetadata()) return true; break;
174 // The Global variable production with no name can have many different
175 // optional leading prefixes, the production is:
176 // GlobalVar ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
177 // OptionalAddrSpace ('constant'|'global') ...
178 case lltok::kw_private : // OptionalLinkage
179 case lltok::kw_linker_private: // OptionalLinkage
180 case lltok::kw_internal: // OptionalLinkage
181 case lltok::kw_weak: // OptionalLinkage
182 case lltok::kw_weak_odr: // OptionalLinkage
183 case lltok::kw_linkonce: // OptionalLinkage
184 case lltok::kw_linkonce_odr: // OptionalLinkage
185 case lltok::kw_appending: // OptionalLinkage
186 case lltok::kw_dllexport: // OptionalLinkage
187 case lltok::kw_common: // OptionalLinkage
188 case lltok::kw_dllimport: // OptionalLinkage
189 case lltok::kw_extern_weak: // OptionalLinkage
190 case lltok::kw_external: { // OptionalLinkage
191 unsigned Linkage, Visibility;
192 if (ParseOptionalLinkage(Linkage) ||
193 ParseOptionalVisibility(Visibility) ||
194 ParseGlobal("", SMLoc(), Linkage, true, Visibility))
198 case lltok::kw_default: // OptionalVisibility
199 case lltok::kw_hidden: // OptionalVisibility
200 case lltok::kw_protected: { // OptionalVisibility
202 if (ParseOptionalVisibility(Visibility) ||
203 ParseGlobal("", SMLoc(), 0, false, Visibility))
208 case lltok::kw_thread_local: // OptionalThreadLocal
209 case lltok::kw_addrspace: // OptionalAddrSpace
210 case lltok::kw_constant: // GlobalType
211 case lltok::kw_global: // GlobalType
212 if (ParseGlobal("", SMLoc(), 0, false, 0)) return true;
220 /// ::= 'module' 'asm' STRINGCONSTANT
221 bool LLParser::ParseModuleAsm() {
222 assert(Lex.getKind() == lltok::kw_module);
226 if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
227 ParseStringConstant(AsmStr)) return true;
229 const std::string &AsmSoFar = M->getModuleInlineAsm();
230 if (AsmSoFar.empty())
231 M->setModuleInlineAsm(AsmStr);
233 M->setModuleInlineAsm(AsmSoFar+"\n"+AsmStr);
238 /// ::= 'target' 'triple' '=' STRINGCONSTANT
239 /// ::= 'target' 'datalayout' '=' STRINGCONSTANT
240 bool LLParser::ParseTargetDefinition() {
241 assert(Lex.getKind() == lltok::kw_target);
244 default: return TokError("unknown target property");
245 case lltok::kw_triple:
247 if (ParseToken(lltok::equal, "expected '=' after target triple") ||
248 ParseStringConstant(Str))
250 M->setTargetTriple(Str);
252 case lltok::kw_datalayout:
254 if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
255 ParseStringConstant(Str))
257 M->setDataLayout(Str);
263 /// ::= 'deplibs' '=' '[' ']'
264 /// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
265 bool LLParser::ParseDepLibs() {
266 assert(Lex.getKind() == lltok::kw_deplibs);
268 if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
269 ParseToken(lltok::lsquare, "expected '=' after deplibs"))
272 if (EatIfPresent(lltok::rsquare))
276 if (ParseStringConstant(Str)) return true;
279 while (EatIfPresent(lltok::comma)) {
280 if (ParseStringConstant(Str)) return true;
284 return ParseToken(lltok::rsquare, "expected ']' at end of list");
287 /// ParseUnnamedType:
289 /// ::= LocalVarID '=' 'type' type
290 bool LLParser::ParseUnnamedType() {
291 unsigned TypeID = NumberedTypes.size();
293 // Handle the LocalVarID form.
294 if (Lex.getKind() == lltok::LocalVarID) {
295 if (Lex.getUIntVal() != TypeID)
296 return Error(Lex.getLoc(), "type expected to be numbered '%" +
297 utostr(TypeID) + "'");
298 Lex.Lex(); // eat LocalVarID;
300 if (ParseToken(lltok::equal, "expected '=' after name"))
304 assert(Lex.getKind() == lltok::kw_type);
305 LocTy TypeLoc = Lex.getLoc();
306 Lex.Lex(); // eat kw_type
308 PATypeHolder Ty(Type::getVoidTy(Context));
309 if (ParseType(Ty)) return true;
311 // See if this type was previously referenced.
312 std::map<unsigned, std::pair<PATypeHolder, LocTy> >::iterator
313 FI = ForwardRefTypeIDs.find(TypeID);
314 if (FI != ForwardRefTypeIDs.end()) {
315 if (FI->second.first.get() == Ty)
316 return Error(TypeLoc, "self referential type is invalid");
318 cast<DerivedType>(FI->second.first.get())->refineAbstractTypeTo(Ty);
319 Ty = FI->second.first.get();
320 ForwardRefTypeIDs.erase(FI);
323 NumberedTypes.push_back(Ty);
329 /// ::= LocalVar '=' 'type' type
330 bool LLParser::ParseNamedType() {
331 std::string Name = Lex.getStrVal();
332 LocTy NameLoc = Lex.getLoc();
333 Lex.Lex(); // eat LocalVar.
335 PATypeHolder Ty(Type::getVoidTy(Context));
337 if (ParseToken(lltok::equal, "expected '=' after name") ||
338 ParseToken(lltok::kw_type, "expected 'type' after name") ||
342 // Set the type name, checking for conflicts as we do so.
343 bool AlreadyExists = M->addTypeName(Name, Ty);
344 if (!AlreadyExists) return false;
346 // See if this type is a forward reference. We need to eagerly resolve
347 // types to allow recursive type redefinitions below.
348 std::map<std::string, std::pair<PATypeHolder, LocTy> >::iterator
349 FI = ForwardRefTypes.find(Name);
350 if (FI != ForwardRefTypes.end()) {
351 if (FI->second.first.get() == Ty)
352 return Error(NameLoc, "self referential type is invalid");
354 cast<DerivedType>(FI->second.first.get())->refineAbstractTypeTo(Ty);
355 Ty = FI->second.first.get();
356 ForwardRefTypes.erase(FI);
359 // Inserting a name that is already defined, get the existing name.
360 const Type *Existing = M->getTypeByName(Name);
361 assert(Existing && "Conflict but no matching type?!");
363 // Otherwise, this is an attempt to redefine a type. That's okay if
364 // the redefinition is identical to the original.
365 // FIXME: REMOVE REDEFINITIONS IN LLVM 3.0
366 if (Existing == Ty) return false;
368 // Any other kind of (non-equivalent) redefinition is an error.
369 return Error(NameLoc, "redefinition of type named '" + Name + "' of type '" +
370 Ty->getDescription() + "'");
375 /// ::= 'declare' FunctionHeader
376 bool LLParser::ParseDeclare() {
377 assert(Lex.getKind() == lltok::kw_declare);
381 return ParseFunctionHeader(F, false);
385 /// ::= 'define' FunctionHeader '{' ...
386 bool LLParser::ParseDefine() {
387 assert(Lex.getKind() == lltok::kw_define);
391 return ParseFunctionHeader(F, true) ||
392 ParseFunctionBody(*F);
398 bool LLParser::ParseGlobalType(bool &IsConstant) {
399 if (Lex.getKind() == lltok::kw_constant)
401 else if (Lex.getKind() == lltok::kw_global)
405 return TokError("expected 'global' or 'constant'");
411 /// ParseUnnamedGlobal:
412 /// OptionalVisibility ALIAS ...
413 /// OptionalLinkage OptionalVisibility ... -> global variable
414 /// GlobalID '=' OptionalVisibility ALIAS ...
415 /// GlobalID '=' OptionalLinkage OptionalVisibility ... -> global variable
416 bool LLParser::ParseUnnamedGlobal() {
417 unsigned VarID = NumberedVals.size();
419 LocTy NameLoc = Lex.getLoc();
421 // Handle the GlobalID form.
422 if (Lex.getKind() == lltok::GlobalID) {
423 if (Lex.getUIntVal() != VarID)
424 return Error(Lex.getLoc(), "variable expected to be numbered '%" +
425 utostr(VarID) + "'");
426 Lex.Lex(); // eat GlobalID;
428 if (ParseToken(lltok::equal, "expected '=' after name"))
433 unsigned Linkage, Visibility;
434 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
435 ParseOptionalVisibility(Visibility))
438 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
439 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
440 return ParseAlias(Name, NameLoc, Visibility);
443 /// ParseNamedGlobal:
444 /// GlobalVar '=' OptionalVisibility ALIAS ...
445 /// GlobalVar '=' OptionalLinkage OptionalVisibility ... -> global variable
446 bool LLParser::ParseNamedGlobal() {
447 assert(Lex.getKind() == lltok::GlobalVar);
448 LocTy NameLoc = Lex.getLoc();
449 std::string Name = Lex.getStrVal();
453 unsigned Linkage, Visibility;
454 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
455 ParseOptionalLinkage(Linkage, HasLinkage) ||
456 ParseOptionalVisibility(Visibility))
459 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
460 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
461 return ParseAlias(Name, NameLoc, Visibility);
465 // ::= '!' STRINGCONSTANT
466 bool LLParser::ParseMDString(MetadataBase *&MDS) {
468 if (ParseStringConstant(Str)) return true;
469 MDS = MDString::get(Context, Str);
474 // ::= '!' MDNodeNumber
475 bool LLParser::ParseMDNode(MetadataBase *&Node) {
476 // !{ ..., !42, ... }
478 if (ParseUInt32(MID)) return true;
480 // Check existing MDNode.
481 std::map<unsigned, WeakVH>::iterator I = MetadataCache.find(MID);
482 if (I != MetadataCache.end()) {
483 Node = cast<MetadataBase>(I->second);
487 // Check known forward references.
488 std::map<unsigned, std::pair<WeakVH, LocTy> >::iterator
489 FI = ForwardRefMDNodes.find(MID);
490 if (FI != ForwardRefMDNodes.end()) {
491 Node = cast<MetadataBase>(FI->second.first);
495 // Create MDNode forward reference
496 SmallVector<Value *, 1> Elts;
497 std::string FwdRefName = "llvm.mdnode.fwdref." + utostr(MID);
498 Elts.push_back(MDString::get(Context, FwdRefName));
499 MDNode *FwdNode = MDNode::get(Context, Elts.data(), Elts.size());
500 ForwardRefMDNodes[MID] = std::make_pair(FwdNode, Lex.getLoc());
505 ///ParseNamedMetadata:
506 /// !foo = !{ !1, !2 }
507 bool LLParser::ParseNamedMetadata() {
508 assert(Lex.getKind() == lltok::NamedOrCustomMD);
510 std::string Name = Lex.getStrVal();
512 if (ParseToken(lltok::equal, "expected '=' here"))
515 if (Lex.getKind() != lltok::Metadata)
516 return TokError("Expected '!' here");
519 if (Lex.getKind() != lltok::lbrace)
520 return TokError("Expected '{' here");
522 SmallVector<MetadataBase *, 8> Elts;
524 if (Lex.getKind() != lltok::Metadata)
525 return TokError("Expected '!' here");
528 if (ParseMDNode(N)) return true;
530 } while (EatIfPresent(lltok::comma));
532 if (ParseToken(lltok::rbrace, "expected end of metadata node"))
535 NamedMDNode::Create(Context, Name, Elts.data(), Elts.size(), M);
539 /// ParseStandaloneMetadata:
541 bool LLParser::ParseStandaloneMetadata() {
542 assert(Lex.getKind() == lltok::Metadata);
544 unsigned MetadataID = 0;
545 if (ParseUInt32(MetadataID))
547 if (MetadataCache.find(MetadataID) != MetadataCache.end())
548 return TokError("Metadata id is already used");
549 if (ParseToken(lltok::equal, "expected '=' here"))
553 PATypeHolder Ty(Type::getVoidTy(Context));
554 if (ParseType(Ty, TyLoc))
557 if (Lex.getKind() != lltok::Metadata)
558 return TokError("Expected metadata here");
561 if (Lex.getKind() != lltok::lbrace)
562 return TokError("Expected '{' here");
564 SmallVector<Value *, 16> Elts;
565 if (ParseMDNodeVector(Elts)
566 || ParseToken(lltok::rbrace, "expected end of metadata node"))
569 MDNode *Init = MDNode::get(Context, Elts.data(), Elts.size());
570 MetadataCache[MetadataID] = Init;
571 std::map<unsigned, std::pair<WeakVH, LocTy> >::iterator
572 FI = ForwardRefMDNodes.find(MetadataID);
573 if (FI != ForwardRefMDNodes.end()) {
574 MDNode *FwdNode = cast<MDNode>(FI->second.first);
575 FwdNode->replaceAllUsesWith(Init);
576 ForwardRefMDNodes.erase(FI);
582 /// ParseInlineMetadata:
586 bool LLParser::ParseInlineMetadata(Value *&V, PerFunctionState &PFS) {
587 assert(Lex.getKind() == lltok::Metadata && "Only for Metadata");
591 if (Lex.getKind() == lltok::lbrace) {
593 if (ParseTypeAndValue(V, PFS) ||
594 ParseToken(lltok::rbrace, "expected end of metadata node"))
597 Value *Vals[] = { V };
598 V = MDNode::get(Context, Vals, 1);
602 // Standalone metadata reference
603 // !{ ..., !42, ... }
604 if (!ParseMDNode((MetadataBase *&)V))
608 // '!' STRINGCONSTANT
609 if (ParseMDString((MetadataBase *&)V)) return true;
614 /// ::= GlobalVar '=' OptionalVisibility 'alias' OptionalLinkage Aliasee
617 /// ::= 'bitcast' '(' TypeAndValue 'to' Type ')'
618 /// ::= 'getelementptr' 'inbounds'? '(' ... ')'
620 /// Everything through visibility has already been parsed.
622 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc,
623 unsigned Visibility) {
624 assert(Lex.getKind() == lltok::kw_alias);
627 LocTy LinkageLoc = Lex.getLoc();
628 if (ParseOptionalLinkage(Linkage))
631 if (Linkage != GlobalValue::ExternalLinkage &&
632 Linkage != GlobalValue::WeakAnyLinkage &&
633 Linkage != GlobalValue::WeakODRLinkage &&
634 Linkage != GlobalValue::InternalLinkage &&
635 Linkage != GlobalValue::PrivateLinkage &&
636 Linkage != GlobalValue::LinkerPrivateLinkage)
637 return Error(LinkageLoc, "invalid linkage type for alias");
640 LocTy AliaseeLoc = Lex.getLoc();
641 if (Lex.getKind() != lltok::kw_bitcast &&
642 Lex.getKind() != lltok::kw_getelementptr) {
643 if (ParseGlobalTypeAndValue(Aliasee)) return true;
645 // The bitcast dest type is not present, it is implied by the dest type.
647 if (ParseValID(ID)) return true;
648 if (ID.Kind != ValID::t_Constant)
649 return Error(AliaseeLoc, "invalid aliasee");
650 Aliasee = ID.ConstantVal;
653 if (!isa<PointerType>(Aliasee->getType()))
654 return Error(AliaseeLoc, "alias must have pointer type");
656 // Okay, create the alias but do not insert it into the module yet.
657 GlobalAlias* GA = new GlobalAlias(Aliasee->getType(),
658 (GlobalValue::LinkageTypes)Linkage, Name,
660 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
662 // See if this value already exists in the symbol table. If so, it is either
663 // a redefinition or a definition of a forward reference.
664 if (GlobalValue *Val = M->getNamedValue(Name)) {
665 // See if this was a redefinition. If so, there is no entry in
667 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
668 I = ForwardRefVals.find(Name);
669 if (I == ForwardRefVals.end())
670 return Error(NameLoc, "redefinition of global named '@" + Name + "'");
672 // Otherwise, this was a definition of forward ref. Verify that types
674 if (Val->getType() != GA->getType())
675 return Error(NameLoc,
676 "forward reference and definition of alias have different types");
678 // If they agree, just RAUW the old value with the alias and remove the
680 Val->replaceAllUsesWith(GA);
681 Val->eraseFromParent();
682 ForwardRefVals.erase(I);
685 // Insert into the module, we know its name won't collide now.
686 M->getAliasList().push_back(GA);
687 assert(GA->getNameStr() == Name && "Should not be a name conflict!");
693 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalThreadLocal
694 /// OptionalAddrSpace GlobalType Type Const
695 /// ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
696 /// OptionalAddrSpace GlobalType Type Const
698 /// Everything through visibility has been parsed already.
700 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
701 unsigned Linkage, bool HasLinkage,
702 unsigned Visibility) {
704 bool ThreadLocal, IsConstant;
707 PATypeHolder Ty(Type::getVoidTy(Context));
708 if (ParseOptionalToken(lltok::kw_thread_local, ThreadLocal) ||
709 ParseOptionalAddrSpace(AddrSpace) ||
710 ParseGlobalType(IsConstant) ||
711 ParseType(Ty, TyLoc))
714 // If the linkage is specified and is external, then no initializer is
717 if (!HasLinkage || (Linkage != GlobalValue::DLLImportLinkage &&
718 Linkage != GlobalValue::ExternalWeakLinkage &&
719 Linkage != GlobalValue::ExternalLinkage)) {
720 if (ParseGlobalValue(Ty, Init))
724 if (isa<FunctionType>(Ty) || Ty->isLabelTy())
725 return Error(TyLoc, "invalid type for global variable");
727 GlobalVariable *GV = 0;
729 // See if the global was forward referenced, if so, use the global.
731 if (GlobalValue *GVal = M->getNamedValue(Name)) {
732 if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
733 return Error(NameLoc, "redefinition of global '@" + Name + "'");
734 GV = cast<GlobalVariable>(GVal);
737 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
738 I = ForwardRefValIDs.find(NumberedVals.size());
739 if (I != ForwardRefValIDs.end()) {
740 GV = cast<GlobalVariable>(I->second.first);
741 ForwardRefValIDs.erase(I);
746 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, 0,
747 Name, 0, false, AddrSpace);
749 if (GV->getType()->getElementType() != Ty)
751 "forward reference and definition of global have different types");
753 // Move the forward-reference to the correct spot in the module.
754 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
758 NumberedVals.push_back(GV);
760 // Set the parsed properties on the global.
762 GV->setInitializer(Init);
763 GV->setConstant(IsConstant);
764 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
765 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
766 GV->setThreadLocal(ThreadLocal);
768 // Parse attributes on the global.
769 while (Lex.getKind() == lltok::comma) {
772 if (Lex.getKind() == lltok::kw_section) {
774 GV->setSection(Lex.getStrVal());
775 if (ParseToken(lltok::StringConstant, "expected global section string"))
777 } else if (Lex.getKind() == lltok::kw_align) {
779 if (ParseOptionalAlignment(Alignment)) return true;
780 GV->setAlignment(Alignment);
782 TokError("unknown global variable property!");
790 //===----------------------------------------------------------------------===//
791 // GlobalValue Reference/Resolution Routines.
792 //===----------------------------------------------------------------------===//
794 /// GetGlobalVal - Get a value with the specified name or ID, creating a
795 /// forward reference record if needed. This can return null if the value
796 /// exists but does not have the right type.
797 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, const Type *Ty,
799 const PointerType *PTy = dyn_cast<PointerType>(Ty);
801 Error(Loc, "global variable reference must have pointer type");
805 // Look this name up in the normal function symbol table.
807 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
809 // If this is a forward reference for the value, see if we already created a
810 // forward ref record.
812 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
813 I = ForwardRefVals.find(Name);
814 if (I != ForwardRefVals.end())
815 Val = I->second.first;
818 // If we have the value in the symbol table or fwd-ref table, return it.
820 if (Val->getType() == Ty) return Val;
821 Error(Loc, "'@" + Name + "' defined with type '" +
822 Val->getType()->getDescription() + "'");
826 // Otherwise, create a new forward reference for this value and remember it.
828 if (const FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType())) {
829 // Function types can return opaque but functions can't.
830 if (isa<OpaqueType>(FT->getReturnType())) {
831 Error(Loc, "function may not return opaque type");
835 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
837 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
838 GlobalValue::ExternalWeakLinkage, 0, Name);
841 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
845 GlobalValue *LLParser::GetGlobalVal(unsigned ID, const Type *Ty, LocTy Loc) {
846 const PointerType *PTy = dyn_cast<PointerType>(Ty);
848 Error(Loc, "global variable reference must have pointer type");
852 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
854 // If this is a forward reference for the value, see if we already created a
855 // forward ref record.
857 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
858 I = ForwardRefValIDs.find(ID);
859 if (I != ForwardRefValIDs.end())
860 Val = I->second.first;
863 // If we have the value in the symbol table or fwd-ref table, return it.
865 if (Val->getType() == Ty) return Val;
866 Error(Loc, "'@" + utostr(ID) + "' defined with type '" +
867 Val->getType()->getDescription() + "'");
871 // Otherwise, create a new forward reference for this value and remember it.
873 if (const FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType())) {
874 // Function types can return opaque but functions can't.
875 if (isa<OpaqueType>(FT->getReturnType())) {
876 Error(Loc, "function may not return opaque type");
879 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
881 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
882 GlobalValue::ExternalWeakLinkage, 0, "");
885 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
890 //===----------------------------------------------------------------------===//
892 //===----------------------------------------------------------------------===//
894 /// ParseToken - If the current token has the specified kind, eat it and return
895 /// success. Otherwise, emit the specified error and return failure.
896 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
897 if (Lex.getKind() != T)
898 return TokError(ErrMsg);
903 /// ParseStringConstant
904 /// ::= StringConstant
905 bool LLParser::ParseStringConstant(std::string &Result) {
906 if (Lex.getKind() != lltok::StringConstant)
907 return TokError("expected string constant");
908 Result = Lex.getStrVal();
915 bool LLParser::ParseUInt32(unsigned &Val) {
916 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
917 return TokError("expected integer");
918 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
919 if (Val64 != unsigned(Val64))
920 return TokError("expected 32-bit integer (too large)");
927 /// ParseOptionalAddrSpace
929 /// := 'addrspace' '(' uint32 ')'
930 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
932 if (!EatIfPresent(lltok::kw_addrspace))
934 return ParseToken(lltok::lparen, "expected '(' in address space") ||
935 ParseUInt32(AddrSpace) ||
936 ParseToken(lltok::rparen, "expected ')' in address space");
939 /// ParseOptionalAttrs - Parse a potentially empty attribute list. AttrKind
940 /// indicates what kind of attribute list this is: 0: function arg, 1: result,
941 /// 2: function attr.
942 /// 3: function arg after value: FIXME: REMOVE IN LLVM 3.0
943 bool LLParser::ParseOptionalAttrs(unsigned &Attrs, unsigned AttrKind) {
944 Attrs = Attribute::None;
945 LocTy AttrLoc = Lex.getLoc();
948 switch (Lex.getKind()) {
951 // Treat these as signext/zeroext if they occur in the argument list after
952 // the value, as in "call i8 @foo(i8 10 sext)". If they occur before the
953 // value, as in "call i8 @foo(i8 sext (" then it is part of a constant
955 // FIXME: REMOVE THIS IN LLVM 3.0
957 if (Lex.getKind() == lltok::kw_sext)
958 Attrs |= Attribute::SExt;
960 Attrs |= Attribute::ZExt;
964 default: // End of attributes.
965 if (AttrKind != 2 && (Attrs & Attribute::FunctionOnly))
966 return Error(AttrLoc, "invalid use of function-only attribute");
968 if (AttrKind != 0 && AttrKind != 3 && (Attrs & Attribute::ParameterOnly))
969 return Error(AttrLoc, "invalid use of parameter-only attribute");
972 case lltok::kw_zeroext: Attrs |= Attribute::ZExt; break;
973 case lltok::kw_signext: Attrs |= Attribute::SExt; break;
974 case lltok::kw_inreg: Attrs |= Attribute::InReg; break;
975 case lltok::kw_sret: Attrs |= Attribute::StructRet; break;
976 case lltok::kw_noalias: Attrs |= Attribute::NoAlias; break;
977 case lltok::kw_nocapture: Attrs |= Attribute::NoCapture; break;
978 case lltok::kw_byval: Attrs |= Attribute::ByVal; break;
979 case lltok::kw_nest: Attrs |= Attribute::Nest; break;
981 case lltok::kw_noreturn: Attrs |= Attribute::NoReturn; break;
982 case lltok::kw_nounwind: Attrs |= Attribute::NoUnwind; break;
983 case lltok::kw_noinline: Attrs |= Attribute::NoInline; break;
984 case lltok::kw_readnone: Attrs |= Attribute::ReadNone; break;
985 case lltok::kw_readonly: Attrs |= Attribute::ReadOnly; break;
986 case lltok::kw_inlinehint: Attrs |= Attribute::InlineHint; break;
987 case lltok::kw_alwaysinline: Attrs |= Attribute::AlwaysInline; break;
988 case lltok::kw_optsize: Attrs |= Attribute::OptimizeForSize; break;
989 case lltok::kw_ssp: Attrs |= Attribute::StackProtect; break;
990 case lltok::kw_sspreq: Attrs |= Attribute::StackProtectReq; break;
991 case lltok::kw_noredzone: Attrs |= Attribute::NoRedZone; break;
992 case lltok::kw_noimplicitfloat: Attrs |= Attribute::NoImplicitFloat; break;
993 case lltok::kw_naked: Attrs |= Attribute::Naked; break;
995 case lltok::kw_align: {
997 if (ParseOptionalAlignment(Alignment))
999 Attrs |= Attribute::constructAlignmentFromInt(Alignment);
1007 /// ParseOptionalLinkage
1010 /// ::= 'linker_private'
1015 /// ::= 'linkonce_odr'
1020 /// ::= 'extern_weak'
1022 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1024 switch (Lex.getKind()) {
1025 default: Res=GlobalValue::ExternalLinkage; return false;
1026 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1027 case lltok::kw_linker_private: Res = GlobalValue::LinkerPrivateLinkage; break;
1028 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1029 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1030 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1031 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1032 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1033 case lltok::kw_available_externally:
1034 Res = GlobalValue::AvailableExternallyLinkage;
1036 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1037 case lltok::kw_dllexport: Res = GlobalValue::DLLExportLinkage; break;
1038 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1039 case lltok::kw_dllimport: Res = GlobalValue::DLLImportLinkage; break;
1040 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1041 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1048 /// ParseOptionalVisibility
1054 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1055 switch (Lex.getKind()) {
1056 default: Res = GlobalValue::DefaultVisibility; return false;
1057 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1058 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1059 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1065 /// ParseOptionalCallingConv
1070 /// ::= 'x86_stdcallcc'
1071 /// ::= 'x86_fastcallcc'
1072 /// ::= 'arm_apcscc'
1073 /// ::= 'arm_aapcscc'
1074 /// ::= 'arm_aapcs_vfpcc'
1075 /// ::= 'msp430_intrcc'
1078 bool LLParser::ParseOptionalCallingConv(CallingConv::ID &CC) {
1079 switch (Lex.getKind()) {
1080 default: CC = CallingConv::C; return false;
1081 case lltok::kw_ccc: CC = CallingConv::C; break;
1082 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1083 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1084 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1085 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1086 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1087 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1088 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1089 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1090 case lltok::kw_cc: {
1091 unsigned ArbitraryCC;
1093 if (ParseUInt32(ArbitraryCC)) {
1096 CC = static_cast<CallingConv::ID>(ArbitraryCC);
1106 /// ParseOptionalCustomMetadata
1108 /// ::= !dbg !42 (',' !dbg !57)*
1109 bool LLParser::ParseOptionalCustomMetadata() {
1110 if (Lex.getKind() != lltok::NamedOrCustomMD)
1114 std::string Name = Lex.getStrVal();
1117 if (Lex.getKind() != lltok::Metadata)
1118 return TokError("expected '!' here");
1122 if (ParseMDNode(Node)) return true;
1124 unsigned MDK = M->getMDKindID(Name.c_str());
1125 MDsOnInst.push_back(std::make_pair(MDK, cast<MDNode>(Node)));
1127 // If this is the end of the list, we're done.
1128 if (!EatIfPresent(lltok::comma))
1131 // The next value must be a custom metadata id.
1132 if (Lex.getKind() != lltok::NamedOrCustomMD)
1133 return TokError("expected more custom metadata ids");
1137 /// ParseOptionalAlignment
1140 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1142 if (!EatIfPresent(lltok::kw_align))
1144 LocTy AlignLoc = Lex.getLoc();
1145 if (ParseUInt32(Alignment)) return true;
1146 if (!isPowerOf2_32(Alignment))
1147 return Error(AlignLoc, "alignment is not a power of two");
1151 /// ParseOptionalInfo
1152 /// ::= OptionalInfo (',' OptionalInfo)+
1153 bool LLParser::ParseOptionalInfo(unsigned &Alignment) {
1155 // FIXME: Handle customized metadata info attached with an instruction.
1157 if (Lex.getKind() == lltok::NamedOrCustomMD) {
1158 if (ParseOptionalCustomMetadata()) return true;
1159 } else if (Lex.getKind() == lltok::kw_align) {
1160 if (ParseOptionalAlignment(Alignment)) return true;
1163 } while (EatIfPresent(lltok::comma));
1170 /// ::= (',' uint32)+
1171 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices) {
1172 if (Lex.getKind() != lltok::comma)
1173 return TokError("expected ',' as start of index list");
1175 while (EatIfPresent(lltok::comma)) {
1176 if (Lex.getKind() == lltok::NamedOrCustomMD)
1179 if (ParseUInt32(Idx)) return true;
1180 Indices.push_back(Idx);
1186 //===----------------------------------------------------------------------===//
1188 //===----------------------------------------------------------------------===//
1190 /// ParseType - Parse and resolve a full type.
1191 bool LLParser::ParseType(PATypeHolder &Result, bool AllowVoid) {
1192 LocTy TypeLoc = Lex.getLoc();
1193 if (ParseTypeRec(Result)) return true;
1195 // Verify no unresolved uprefs.
1196 if (!UpRefs.empty())
1197 return Error(UpRefs.back().Loc, "invalid unresolved type up reference");
1199 if (!AllowVoid && Result.get()->isVoidTy())
1200 return Error(TypeLoc, "void type only allowed for function results");
1205 /// HandleUpRefs - Every time we finish a new layer of types, this function is
1206 /// called. It loops through the UpRefs vector, which is a list of the
1207 /// currently active types. For each type, if the up-reference is contained in
1208 /// the newly completed type, we decrement the level count. When the level
1209 /// count reaches zero, the up-referenced type is the type that is passed in:
1210 /// thus we can complete the cycle.
1212 PATypeHolder LLParser::HandleUpRefs(const Type *ty) {
1213 // If Ty isn't abstract, or if there are no up-references in it, then there is
1214 // nothing to resolve here.
1215 if (!ty->isAbstract() || UpRefs.empty()) return ty;
1217 PATypeHolder Ty(ty);
1219 dbgs() << "Type '" << Ty->getDescription()
1220 << "' newly formed. Resolving upreferences.\n"
1221 << UpRefs.size() << " upreferences active!\n";
1224 // If we find any resolvable upreferences (i.e., those whose NestingLevel goes
1225 // to zero), we resolve them all together before we resolve them to Ty. At
1226 // the end of the loop, if there is anything to resolve to Ty, it will be in
1228 OpaqueType *TypeToResolve = 0;
1230 for (unsigned i = 0; i != UpRefs.size(); ++i) {
1231 // Determine if 'Ty' directly contains this up-references 'LastContainedTy'.
1233 std::find(Ty->subtype_begin(), Ty->subtype_end(),
1234 UpRefs[i].LastContainedTy) != Ty->subtype_end();
1237 dbgs() << " UR#" << i << " - TypeContains(" << Ty->getDescription() << ", "
1238 << UpRefs[i].LastContainedTy->getDescription() << ") = "
1239 << (ContainsType ? "true" : "false")
1240 << " level=" << UpRefs[i].NestingLevel << "\n";
1245 // Decrement level of upreference
1246 unsigned Level = --UpRefs[i].NestingLevel;
1247 UpRefs[i].LastContainedTy = Ty;
1249 // If the Up-reference has a non-zero level, it shouldn't be resolved yet.
1254 dbgs() << " * Resolving upreference for " << UpRefs[i].UpRefTy << "\n";
1257 TypeToResolve = UpRefs[i].UpRefTy;
1259 UpRefs[i].UpRefTy->refineAbstractTypeTo(TypeToResolve);
1260 UpRefs.erase(UpRefs.begin()+i); // Remove from upreference list.
1261 --i; // Do not skip the next element.
1265 TypeToResolve->refineAbstractTypeTo(Ty);
1271 /// ParseTypeRec - The recursive function used to process the internal
1272 /// implementation details of types.
1273 bool LLParser::ParseTypeRec(PATypeHolder &Result) {
1274 switch (Lex.getKind()) {
1276 return TokError("expected type");
1278 // TypeRec ::= 'float' | 'void' (etc)
1279 Result = Lex.getTyVal();
1282 case lltok::kw_opaque:
1283 // TypeRec ::= 'opaque'
1284 Result = OpaqueType::get(Context);
1288 // TypeRec ::= '{' ... '}'
1289 if (ParseStructType(Result, false))
1292 case lltok::lsquare:
1293 // TypeRec ::= '[' ... ']'
1294 Lex.Lex(); // eat the lsquare.
1295 if (ParseArrayVectorType(Result, false))
1298 case lltok::less: // Either vector or packed struct.
1299 // TypeRec ::= '<' ... '>'
1301 if (Lex.getKind() == lltok::lbrace) {
1302 if (ParseStructType(Result, true) ||
1303 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1305 } else if (ParseArrayVectorType(Result, true))
1308 case lltok::LocalVar:
1309 case lltok::StringConstant: // FIXME: REMOVE IN LLVM 3.0
1311 if (const Type *T = M->getTypeByName(Lex.getStrVal())) {
1314 Result = OpaqueType::get(Context);
1315 ForwardRefTypes.insert(std::make_pair(Lex.getStrVal(),
1316 std::make_pair(Result,
1318 M->addTypeName(Lex.getStrVal(), Result.get());
1323 case lltok::LocalVarID:
1325 if (Lex.getUIntVal() < NumberedTypes.size())
1326 Result = NumberedTypes[Lex.getUIntVal()];
1328 std::map<unsigned, std::pair<PATypeHolder, LocTy> >::iterator
1329 I = ForwardRefTypeIDs.find(Lex.getUIntVal());
1330 if (I != ForwardRefTypeIDs.end())
1331 Result = I->second.first;
1333 Result = OpaqueType::get(Context);
1334 ForwardRefTypeIDs.insert(std::make_pair(Lex.getUIntVal(),
1335 std::make_pair(Result,
1341 case lltok::backslash: {
1342 // TypeRec ::= '\' 4
1345 if (ParseUInt32(Val)) return true;
1346 OpaqueType *OT = OpaqueType::get(Context); //Use temporary placeholder.
1347 UpRefs.push_back(UpRefRecord(Lex.getLoc(), Val, OT));
1353 // Parse the type suffixes.
1355 switch (Lex.getKind()) {
1357 default: return false;
1359 // TypeRec ::= TypeRec '*'
1361 if (Result.get()->isLabelTy())
1362 return TokError("basic block pointers are invalid");
1363 if (Result.get()->isVoidTy())
1364 return TokError("pointers to void are invalid; use i8* instead");
1365 if (!PointerType::isValidElementType(Result.get()))
1366 return TokError("pointer to this type is invalid");
1367 Result = HandleUpRefs(PointerType::getUnqual(Result.get()));
1371 // TypeRec ::= TypeRec 'addrspace' '(' uint32 ')' '*'
1372 case lltok::kw_addrspace: {
1373 if (Result.get()->isLabelTy())
1374 return TokError("basic block pointers are invalid");
1375 if (Result.get()->isVoidTy())
1376 return TokError("pointers to void are invalid; use i8* instead");
1377 if (!PointerType::isValidElementType(Result.get()))
1378 return TokError("pointer to this type is invalid");
1380 if (ParseOptionalAddrSpace(AddrSpace) ||
1381 ParseToken(lltok::star, "expected '*' in address space"))
1384 Result = HandleUpRefs(PointerType::get(Result.get(), AddrSpace));
1388 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1390 if (ParseFunctionType(Result))
1397 /// ParseParameterList
1399 /// ::= '(' Arg (',' Arg)* ')'
1401 /// ::= Type OptionalAttributes Value OptionalAttributes
1402 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1403 PerFunctionState &PFS) {
1404 if (ParseToken(lltok::lparen, "expected '(' in call"))
1407 while (Lex.getKind() != lltok::rparen) {
1408 // If this isn't the first argument, we need a comma.
1409 if (!ArgList.empty() &&
1410 ParseToken(lltok::comma, "expected ',' in argument list"))
1413 // Parse the argument.
1415 PATypeHolder ArgTy(Type::getVoidTy(Context));
1416 unsigned ArgAttrs1 = Attribute::None;
1417 unsigned ArgAttrs2 = Attribute::None;
1419 if (ParseType(ArgTy, ArgLoc))
1422 if (Lex.getKind() == lltok::Metadata) {
1423 if (ParseInlineMetadata(V, PFS))
1426 if (ParseOptionalAttrs(ArgAttrs1, 0) ||
1427 ParseValue(ArgTy, V, PFS) ||
1428 // FIXME: Should not allow attributes after the argument, remove this
1430 ParseOptionalAttrs(ArgAttrs2, 3))
1433 ArgList.push_back(ParamInfo(ArgLoc, V, ArgAttrs1|ArgAttrs2));
1436 Lex.Lex(); // Lex the ')'.
1442 /// ParseArgumentList - Parse the argument list for a function type or function
1443 /// prototype. If 'inType' is true then we are parsing a FunctionType.
1444 /// ::= '(' ArgTypeListI ')'
1448 /// ::= ArgTypeList ',' '...'
1449 /// ::= ArgType (',' ArgType)*
1451 bool LLParser::ParseArgumentList(std::vector<ArgInfo> &ArgList,
1452 bool &isVarArg, bool inType) {
1454 assert(Lex.getKind() == lltok::lparen);
1455 Lex.Lex(); // eat the (.
1457 if (Lex.getKind() == lltok::rparen) {
1459 } else if (Lex.getKind() == lltok::dotdotdot) {
1463 LocTy TypeLoc = Lex.getLoc();
1464 PATypeHolder ArgTy(Type::getVoidTy(Context));
1468 // If we're parsing a type, use ParseTypeRec, because we allow recursive
1469 // types (such as a function returning a pointer to itself). If parsing a
1470 // function prototype, we require fully resolved types.
1471 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1472 ParseOptionalAttrs(Attrs, 0)) return true;
1474 if (ArgTy->isVoidTy())
1475 return Error(TypeLoc, "argument can not have void type");
1477 if (Lex.getKind() == lltok::LocalVar ||
1478 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1479 Name = Lex.getStrVal();
1483 if (!FunctionType::isValidArgumentType(ArgTy))
1484 return Error(TypeLoc, "invalid type for function argument");
1486 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1488 while (EatIfPresent(lltok::comma)) {
1489 // Handle ... at end of arg list.
1490 if (EatIfPresent(lltok::dotdotdot)) {
1495 // Otherwise must be an argument type.
1496 TypeLoc = Lex.getLoc();
1497 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1498 ParseOptionalAttrs(Attrs, 0)) return true;
1500 if (ArgTy->isVoidTy())
1501 return Error(TypeLoc, "argument can not have void type");
1503 if (Lex.getKind() == lltok::LocalVar ||
1504 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1505 Name = Lex.getStrVal();
1511 if (!ArgTy->isFirstClassType() && !isa<OpaqueType>(ArgTy))
1512 return Error(TypeLoc, "invalid type for function argument");
1514 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1518 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1521 /// ParseFunctionType
1522 /// ::= Type ArgumentList OptionalAttrs
1523 bool LLParser::ParseFunctionType(PATypeHolder &Result) {
1524 assert(Lex.getKind() == lltok::lparen);
1526 if (!FunctionType::isValidReturnType(Result))
1527 return TokError("invalid function return type");
1529 std::vector<ArgInfo> ArgList;
1532 if (ParseArgumentList(ArgList, isVarArg, true) ||
1533 // FIXME: Allow, but ignore attributes on function types!
1534 // FIXME: Remove in LLVM 3.0
1535 ParseOptionalAttrs(Attrs, 2))
1538 // Reject names on the arguments lists.
1539 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1540 if (!ArgList[i].Name.empty())
1541 return Error(ArgList[i].Loc, "argument name invalid in function type");
1542 if (!ArgList[i].Attrs != 0) {
1543 // Allow but ignore attributes on function types; this permits
1545 // FIXME: REJECT ATTRIBUTES ON FUNCTION TYPES in LLVM 3.0
1549 std::vector<const Type*> ArgListTy;
1550 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1551 ArgListTy.push_back(ArgList[i].Type);
1553 Result = HandleUpRefs(FunctionType::get(Result.get(),
1554 ArgListTy, isVarArg));
1558 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
1561 /// ::= '{' TypeRec (',' TypeRec)* '}'
1562 /// ::= '<' '{' '}' '>'
1563 /// ::= '<' '{' TypeRec (',' TypeRec)* '}' '>'
1564 bool LLParser::ParseStructType(PATypeHolder &Result, bool Packed) {
1565 assert(Lex.getKind() == lltok::lbrace);
1566 Lex.Lex(); // Consume the '{'
1568 if (EatIfPresent(lltok::rbrace)) {
1569 Result = StructType::get(Context, Packed);
1573 std::vector<PATypeHolder> ParamsList;
1574 LocTy EltTyLoc = Lex.getLoc();
1575 if (ParseTypeRec(Result)) return true;
1576 ParamsList.push_back(Result);
1578 if (Result->isVoidTy())
1579 return Error(EltTyLoc, "struct element can not have void type");
1580 if (!StructType::isValidElementType(Result))
1581 return Error(EltTyLoc, "invalid element type for struct");
1583 while (EatIfPresent(lltok::comma)) {
1584 EltTyLoc = Lex.getLoc();
1585 if (ParseTypeRec(Result)) return true;
1587 if (Result->isVoidTy())
1588 return Error(EltTyLoc, "struct element can not have void type");
1589 if (!StructType::isValidElementType(Result))
1590 return Error(EltTyLoc, "invalid element type for struct");
1592 ParamsList.push_back(Result);
1595 if (ParseToken(lltok::rbrace, "expected '}' at end of struct"))
1598 std::vector<const Type*> ParamsListTy;
1599 for (unsigned i = 0, e = ParamsList.size(); i != e; ++i)
1600 ParamsListTy.push_back(ParamsList[i].get());
1601 Result = HandleUpRefs(StructType::get(Context, ParamsListTy, Packed));
1605 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
1606 /// token has already been consumed.
1608 /// ::= '[' APSINTVAL 'x' Types ']'
1609 /// ::= '<' APSINTVAL 'x' Types '>'
1610 bool LLParser::ParseArrayVectorType(PATypeHolder &Result, bool isVector) {
1611 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
1612 Lex.getAPSIntVal().getBitWidth() > 64)
1613 return TokError("expected number in address space");
1615 LocTy SizeLoc = Lex.getLoc();
1616 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
1619 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
1622 LocTy TypeLoc = Lex.getLoc();
1623 PATypeHolder EltTy(Type::getVoidTy(Context));
1624 if (ParseTypeRec(EltTy)) return true;
1626 if (EltTy->isVoidTy())
1627 return Error(TypeLoc, "array and vector element type cannot be void");
1629 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
1630 "expected end of sequential type"))
1635 return Error(SizeLoc, "zero element vector is illegal");
1636 if ((unsigned)Size != Size)
1637 return Error(SizeLoc, "size too large for vector");
1638 if (!VectorType::isValidElementType(EltTy))
1639 return Error(TypeLoc, "vector element type must be fp or integer");
1640 Result = VectorType::get(EltTy, unsigned(Size));
1642 if (!ArrayType::isValidElementType(EltTy))
1643 return Error(TypeLoc, "invalid array element type");
1644 Result = HandleUpRefs(ArrayType::get(EltTy, Size));
1649 //===----------------------------------------------------------------------===//
1650 // Function Semantic Analysis.
1651 //===----------------------------------------------------------------------===//
1653 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
1655 : P(p), F(f), FunctionNumber(functionNumber) {
1657 // Insert unnamed arguments into the NumberedVals list.
1658 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
1661 NumberedVals.push_back(AI);
1664 LLParser::PerFunctionState::~PerFunctionState() {
1665 // If there were any forward referenced non-basicblock values, delete them.
1666 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
1667 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
1668 if (!isa<BasicBlock>(I->second.first)) {
1669 I->second.first->replaceAllUsesWith(
1670 UndefValue::get(I->second.first->getType()));
1671 delete I->second.first;
1672 I->second.first = 0;
1675 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1676 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
1677 if (!isa<BasicBlock>(I->second.first)) {
1678 I->second.first->replaceAllUsesWith(
1679 UndefValue::get(I->second.first->getType()));
1680 delete I->second.first;
1681 I->second.first = 0;
1685 bool LLParser::PerFunctionState::FinishFunction() {
1686 // Check to see if someone took the address of labels in this block.
1687 if (!P.ForwardRefBlockAddresses.empty()) {
1689 if (!F.getName().empty()) {
1690 FunctionID.Kind = ValID::t_GlobalName;
1691 FunctionID.StrVal = F.getName();
1693 FunctionID.Kind = ValID::t_GlobalID;
1694 FunctionID.UIntVal = FunctionNumber;
1697 std::map<ValID, std::vector<std::pair<ValID, GlobalValue*> > >::iterator
1698 FRBAI = P.ForwardRefBlockAddresses.find(FunctionID);
1699 if (FRBAI != P.ForwardRefBlockAddresses.end()) {
1700 // Resolve all these references.
1701 if (P.ResolveForwardRefBlockAddresses(&F, FRBAI->second, this))
1704 P.ForwardRefBlockAddresses.erase(FRBAI);
1708 if (!ForwardRefVals.empty())
1709 return P.Error(ForwardRefVals.begin()->second.second,
1710 "use of undefined value '%" + ForwardRefVals.begin()->first +
1712 if (!ForwardRefValIDs.empty())
1713 return P.Error(ForwardRefValIDs.begin()->second.second,
1714 "use of undefined value '%" +
1715 utostr(ForwardRefValIDs.begin()->first) + "'");
1720 /// GetVal - Get a value with the specified name or ID, creating a
1721 /// forward reference record if needed. This can return null if the value
1722 /// exists but does not have the right type.
1723 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
1724 const Type *Ty, LocTy Loc) {
1725 // Look this name up in the normal function symbol table.
1726 Value *Val = F.getValueSymbolTable().lookup(Name);
1728 // If this is a forward reference for the value, see if we already created a
1729 // forward ref record.
1731 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1732 I = ForwardRefVals.find(Name);
1733 if (I != ForwardRefVals.end())
1734 Val = I->second.first;
1737 // If we have the value in the symbol table or fwd-ref table, return it.
1739 if (Val->getType() == Ty) return Val;
1740 if (Ty->isLabelTy())
1741 P.Error(Loc, "'%" + Name + "' is not a basic block");
1743 P.Error(Loc, "'%" + Name + "' defined with type '" +
1744 Val->getType()->getDescription() + "'");
1748 // Don't make placeholders with invalid type.
1749 if (!Ty->isFirstClassType() && !isa<OpaqueType>(Ty) &&
1750 Ty != Type::getLabelTy(F.getContext())) {
1751 P.Error(Loc, "invalid use of a non-first-class type");
1755 // Otherwise, create a new forward reference for this value and remember it.
1757 if (Ty->isLabelTy())
1758 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
1760 FwdVal = new Argument(Ty, Name);
1762 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1766 Value *LLParser::PerFunctionState::GetVal(unsigned ID, const Type *Ty,
1768 // Look this name up in the normal function symbol table.
1769 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
1771 // If this is a forward reference for the value, see if we already created a
1772 // forward ref record.
1774 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1775 I = ForwardRefValIDs.find(ID);
1776 if (I != ForwardRefValIDs.end())
1777 Val = I->second.first;
1780 // If we have the value in the symbol table or fwd-ref table, return it.
1782 if (Val->getType() == Ty) return Val;
1783 if (Ty->isLabelTy())
1784 P.Error(Loc, "'%" + utostr(ID) + "' is not a basic block");
1786 P.Error(Loc, "'%" + utostr(ID) + "' defined with type '" +
1787 Val->getType()->getDescription() + "'");
1791 if (!Ty->isFirstClassType() && !isa<OpaqueType>(Ty) &&
1792 Ty != Type::getLabelTy(F.getContext())) {
1793 P.Error(Loc, "invalid use of a non-first-class type");
1797 // Otherwise, create a new forward reference for this value and remember it.
1799 if (Ty->isLabelTy())
1800 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
1802 FwdVal = new Argument(Ty);
1804 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1808 /// SetInstName - After an instruction is parsed and inserted into its
1809 /// basic block, this installs its name.
1810 bool LLParser::PerFunctionState::SetInstName(int NameID,
1811 const std::string &NameStr,
1812 LocTy NameLoc, Instruction *Inst) {
1813 // If this instruction has void type, it cannot have a name or ID specified.
1814 if (Inst->getType()->isVoidTy()) {
1815 if (NameID != -1 || !NameStr.empty())
1816 return P.Error(NameLoc, "instructions returning void cannot have a name");
1820 // If this was a numbered instruction, verify that the instruction is the
1821 // expected value and resolve any forward references.
1822 if (NameStr.empty()) {
1823 // If neither a name nor an ID was specified, just use the next ID.
1825 NameID = NumberedVals.size();
1827 if (unsigned(NameID) != NumberedVals.size())
1828 return P.Error(NameLoc, "instruction expected to be numbered '%" +
1829 utostr(NumberedVals.size()) + "'");
1831 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
1832 ForwardRefValIDs.find(NameID);
1833 if (FI != ForwardRefValIDs.end()) {
1834 if (FI->second.first->getType() != Inst->getType())
1835 return P.Error(NameLoc, "instruction forward referenced with type '" +
1836 FI->second.first->getType()->getDescription() + "'");
1837 FI->second.first->replaceAllUsesWith(Inst);
1838 delete FI->second.first;
1839 ForwardRefValIDs.erase(FI);
1842 NumberedVals.push_back(Inst);
1846 // Otherwise, the instruction had a name. Resolve forward refs and set it.
1847 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1848 FI = ForwardRefVals.find(NameStr);
1849 if (FI != ForwardRefVals.end()) {
1850 if (FI->second.first->getType() != Inst->getType())
1851 return P.Error(NameLoc, "instruction forward referenced with type '" +
1852 FI->second.first->getType()->getDescription() + "'");
1853 FI->second.first->replaceAllUsesWith(Inst);
1854 delete FI->second.first;
1855 ForwardRefVals.erase(FI);
1858 // Set the name on the instruction.
1859 Inst->setName(NameStr);
1861 if (Inst->getNameStr() != NameStr)
1862 return P.Error(NameLoc, "multiple definition of local value named '" +
1867 /// GetBB - Get a basic block with the specified name or ID, creating a
1868 /// forward reference record if needed.
1869 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
1871 return cast_or_null<BasicBlock>(GetVal(Name,
1872 Type::getLabelTy(F.getContext()), Loc));
1875 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
1876 return cast_or_null<BasicBlock>(GetVal(ID,
1877 Type::getLabelTy(F.getContext()), Loc));
1880 /// DefineBB - Define the specified basic block, which is either named or
1881 /// unnamed. If there is an error, this returns null otherwise it returns
1882 /// the block being defined.
1883 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
1887 BB = GetBB(NumberedVals.size(), Loc);
1889 BB = GetBB(Name, Loc);
1890 if (BB == 0) return 0; // Already diagnosed error.
1892 // Move the block to the end of the function. Forward ref'd blocks are
1893 // inserted wherever they happen to be referenced.
1894 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
1896 // Remove the block from forward ref sets.
1898 ForwardRefValIDs.erase(NumberedVals.size());
1899 NumberedVals.push_back(BB);
1901 // BB forward references are already in the function symbol table.
1902 ForwardRefVals.erase(Name);
1908 //===----------------------------------------------------------------------===//
1910 //===----------------------------------------------------------------------===//
1912 /// ParseValID - Parse an abstract value that doesn't necessarily have a
1913 /// type implied. For example, if we parse "4" we don't know what integer type
1914 /// it has. The value will later be combined with its type and checked for
1916 bool LLParser::ParseValID(ValID &ID) {
1917 ID.Loc = Lex.getLoc();
1918 switch (Lex.getKind()) {
1919 default: return TokError("expected value token");
1920 case lltok::GlobalID: // @42
1921 ID.UIntVal = Lex.getUIntVal();
1922 ID.Kind = ValID::t_GlobalID;
1924 case lltok::GlobalVar: // @foo
1925 ID.StrVal = Lex.getStrVal();
1926 ID.Kind = ValID::t_GlobalName;
1928 case lltok::LocalVarID: // %42
1929 ID.UIntVal = Lex.getUIntVal();
1930 ID.Kind = ValID::t_LocalID;
1932 case lltok::LocalVar: // %foo
1933 case lltok::StringConstant: // "foo" - FIXME: REMOVE IN LLVM 3.0
1934 ID.StrVal = Lex.getStrVal();
1935 ID.Kind = ValID::t_LocalName;
1937 case lltok::Metadata: { // !{...} MDNode, !"foo" MDString
1938 ID.Kind = ValID::t_Metadata;
1940 if (Lex.getKind() == lltok::lbrace) {
1941 SmallVector<Value*, 16> Elts;
1942 if (ParseMDNodeVector(Elts) ||
1943 ParseToken(lltok::rbrace, "expected end of metadata node"))
1946 ID.MetadataVal = MDNode::get(Context, Elts.data(), Elts.size());
1950 // Standalone metadata reference
1951 // !{ ..., !42, ... }
1952 if (!ParseMDNode(ID.MetadataVal))
1956 // ::= '!' STRINGCONSTANT
1957 if (ParseMDString(ID.MetadataVal)) return true;
1958 ID.Kind = ValID::t_Metadata;
1962 ID.APSIntVal = Lex.getAPSIntVal();
1963 ID.Kind = ValID::t_APSInt;
1965 case lltok::APFloat:
1966 ID.APFloatVal = Lex.getAPFloatVal();
1967 ID.Kind = ValID::t_APFloat;
1969 case lltok::kw_true:
1970 ID.ConstantVal = ConstantInt::getTrue(Context);
1971 ID.Kind = ValID::t_Constant;
1973 case lltok::kw_false:
1974 ID.ConstantVal = ConstantInt::getFalse(Context);
1975 ID.Kind = ValID::t_Constant;
1977 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
1978 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
1979 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
1981 case lltok::lbrace: {
1982 // ValID ::= '{' ConstVector '}'
1984 SmallVector<Constant*, 16> Elts;
1985 if (ParseGlobalValueVector(Elts) ||
1986 ParseToken(lltok::rbrace, "expected end of struct constant"))
1989 ID.ConstantVal = ConstantStruct::get(Context, Elts.data(),
1990 Elts.size(), false);
1991 ID.Kind = ValID::t_Constant;
1995 // ValID ::= '<' ConstVector '>' --> Vector.
1996 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
1998 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2000 SmallVector<Constant*, 16> Elts;
2001 LocTy FirstEltLoc = Lex.getLoc();
2002 if (ParseGlobalValueVector(Elts) ||
2004 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2005 ParseToken(lltok::greater, "expected end of constant"))
2008 if (isPackedStruct) {
2010 ConstantStruct::get(Context, Elts.data(), Elts.size(), true);
2011 ID.Kind = ValID::t_Constant;
2016 return Error(ID.Loc, "constant vector must not be empty");
2018 if (!Elts[0]->getType()->isInteger() &&
2019 !Elts[0]->getType()->isFloatingPoint())
2020 return Error(FirstEltLoc,
2021 "vector elements must have integer or floating point type");
2023 // Verify that all the vector elements have the same type.
2024 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2025 if (Elts[i]->getType() != Elts[0]->getType())
2026 return Error(FirstEltLoc,
2027 "vector element #" + utostr(i) +
2028 " is not of type '" + Elts[0]->getType()->getDescription());
2030 ID.ConstantVal = ConstantVector::get(Elts.data(), Elts.size());
2031 ID.Kind = ValID::t_Constant;
2034 case lltok::lsquare: { // Array Constant
2036 SmallVector<Constant*, 16> Elts;
2037 LocTy FirstEltLoc = Lex.getLoc();
2038 if (ParseGlobalValueVector(Elts) ||
2039 ParseToken(lltok::rsquare, "expected end of array constant"))
2042 // Handle empty element.
2044 // Use undef instead of an array because it's inconvenient to determine
2045 // the element type at this point, there being no elements to examine.
2046 ID.Kind = ValID::t_EmptyArray;
2050 if (!Elts[0]->getType()->isFirstClassType())
2051 return Error(FirstEltLoc, "invalid array element type: " +
2052 Elts[0]->getType()->getDescription());
2054 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2056 // Verify all elements are correct type!
2057 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2058 if (Elts[i]->getType() != Elts[0]->getType())
2059 return Error(FirstEltLoc,
2060 "array element #" + utostr(i) +
2061 " is not of type '" +Elts[0]->getType()->getDescription());
2064 ID.ConstantVal = ConstantArray::get(ATy, Elts.data(), Elts.size());
2065 ID.Kind = ValID::t_Constant;
2068 case lltok::kw_c: // c "foo"
2070 ID.ConstantVal = ConstantArray::get(Context, Lex.getStrVal(), false);
2071 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2072 ID.Kind = ValID::t_Constant;
2075 case lltok::kw_asm: {
2076 // ValID ::= 'asm' SideEffect? AlignStack? STRINGCONSTANT ',' STRINGCONSTANT
2077 bool HasSideEffect, AlignStack;
2079 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2080 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2081 ParseStringConstant(ID.StrVal) ||
2082 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2083 ParseToken(lltok::StringConstant, "expected constraint string"))
2085 ID.StrVal2 = Lex.getStrVal();
2086 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1);
2087 ID.Kind = ValID::t_InlineAsm;
2091 case lltok::kw_blockaddress: {
2092 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2096 LocTy FnLoc, LabelLoc;
2098 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2100 ParseToken(lltok::comma, "expected comma in block address expression")||
2101 ParseValID(Label) ||
2102 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2105 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2106 return Error(Fn.Loc, "expected function name in blockaddress");
2107 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2108 return Error(Label.Loc, "expected basic block name in blockaddress");
2110 // Make a global variable as a placeholder for this reference.
2111 GlobalVariable *FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context),
2112 false, GlobalValue::InternalLinkage,
2114 ForwardRefBlockAddresses[Fn].push_back(std::make_pair(Label, FwdRef));
2115 ID.ConstantVal = FwdRef;
2116 ID.Kind = ValID::t_Constant;
2120 case lltok::kw_trunc:
2121 case lltok::kw_zext:
2122 case lltok::kw_sext:
2123 case lltok::kw_fptrunc:
2124 case lltok::kw_fpext:
2125 case lltok::kw_bitcast:
2126 case lltok::kw_uitofp:
2127 case lltok::kw_sitofp:
2128 case lltok::kw_fptoui:
2129 case lltok::kw_fptosi:
2130 case lltok::kw_inttoptr:
2131 case lltok::kw_ptrtoint: {
2132 unsigned Opc = Lex.getUIntVal();
2133 PATypeHolder DestTy(Type::getVoidTy(Context));
2136 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2137 ParseGlobalTypeAndValue(SrcVal) ||
2138 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2139 ParseType(DestTy) ||
2140 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2142 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2143 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2144 SrcVal->getType()->getDescription() + "' to '" +
2145 DestTy->getDescription() + "'");
2146 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2148 ID.Kind = ValID::t_Constant;
2151 case lltok::kw_extractvalue: {
2154 SmallVector<unsigned, 4> Indices;
2155 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2156 ParseGlobalTypeAndValue(Val) ||
2157 ParseIndexList(Indices) ||
2158 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2160 if (Lex.getKind() == lltok::NamedOrCustomMD)
2161 if (ParseOptionalCustomMetadata()) return true;
2163 if (!isa<StructType>(Val->getType()) && !isa<ArrayType>(Val->getType()))
2164 return Error(ID.Loc, "extractvalue operand must be array or struct");
2165 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
2167 return Error(ID.Loc, "invalid indices for extractvalue");
2169 ConstantExpr::getExtractValue(Val, Indices.data(), Indices.size());
2170 ID.Kind = ValID::t_Constant;
2173 case lltok::kw_insertvalue: {
2175 Constant *Val0, *Val1;
2176 SmallVector<unsigned, 4> Indices;
2177 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2178 ParseGlobalTypeAndValue(Val0) ||
2179 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2180 ParseGlobalTypeAndValue(Val1) ||
2181 ParseIndexList(Indices) ||
2182 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2184 if (Lex.getKind() == lltok::NamedOrCustomMD)
2185 if (ParseOptionalCustomMetadata()) return true;
2186 if (!isa<StructType>(Val0->getType()) && !isa<ArrayType>(Val0->getType()))
2187 return Error(ID.Loc, "extractvalue operand must be array or struct");
2188 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
2190 return Error(ID.Loc, "invalid indices for insertvalue");
2191 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1,
2192 Indices.data(), Indices.size());
2193 ID.Kind = ValID::t_Constant;
2196 case lltok::kw_icmp:
2197 case lltok::kw_fcmp: {
2198 unsigned PredVal, Opc = Lex.getUIntVal();
2199 Constant *Val0, *Val1;
2201 if (ParseCmpPredicate(PredVal, Opc) ||
2202 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2203 ParseGlobalTypeAndValue(Val0) ||
2204 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2205 ParseGlobalTypeAndValue(Val1) ||
2206 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2209 if (Val0->getType() != Val1->getType())
2210 return Error(ID.Loc, "compare operands must have the same type");
2212 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2214 if (Opc == Instruction::FCmp) {
2215 if (!Val0->getType()->isFPOrFPVector())
2216 return Error(ID.Loc, "fcmp requires floating point operands");
2217 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2219 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2220 if (!Val0->getType()->isIntOrIntVector() &&
2221 !isa<PointerType>(Val0->getType()))
2222 return Error(ID.Loc, "icmp requires pointer or integer operands");
2223 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2225 ID.Kind = ValID::t_Constant;
2229 // Binary Operators.
2231 case lltok::kw_fadd:
2233 case lltok::kw_fsub:
2235 case lltok::kw_fmul:
2236 case lltok::kw_udiv:
2237 case lltok::kw_sdiv:
2238 case lltok::kw_fdiv:
2239 case lltok::kw_urem:
2240 case lltok::kw_srem:
2241 case lltok::kw_frem: {
2245 unsigned Opc = Lex.getUIntVal();
2246 Constant *Val0, *Val1;
2248 LocTy ModifierLoc = Lex.getLoc();
2249 if (Opc == Instruction::Add ||
2250 Opc == Instruction::Sub ||
2251 Opc == Instruction::Mul) {
2252 if (EatIfPresent(lltok::kw_nuw))
2254 if (EatIfPresent(lltok::kw_nsw)) {
2256 if (EatIfPresent(lltok::kw_nuw))
2259 } else if (Opc == Instruction::SDiv) {
2260 if (EatIfPresent(lltok::kw_exact))
2263 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2264 ParseGlobalTypeAndValue(Val0) ||
2265 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2266 ParseGlobalTypeAndValue(Val1) ||
2267 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2269 if (Val0->getType() != Val1->getType())
2270 return Error(ID.Loc, "operands of constexpr must have same type");
2271 if (!Val0->getType()->isIntOrIntVector()) {
2273 return Error(ModifierLoc, "nuw only applies to integer operations");
2275 return Error(ModifierLoc, "nsw only applies to integer operations");
2277 // API compatibility: Accept either integer or floating-point types with
2278 // add, sub, and mul.
2279 if (!Val0->getType()->isIntOrIntVector() &&
2280 !Val0->getType()->isFPOrFPVector())
2281 return Error(ID.Loc,"constexpr requires integer, fp, or vector operands");
2283 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2284 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2285 if (Exact) Flags |= SDivOperator::IsExact;
2286 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2288 ID.Kind = ValID::t_Constant;
2292 // Logical Operations
2294 case lltok::kw_lshr:
2295 case lltok::kw_ashr:
2298 case lltok::kw_xor: {
2299 unsigned Opc = Lex.getUIntVal();
2300 Constant *Val0, *Val1;
2302 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2303 ParseGlobalTypeAndValue(Val0) ||
2304 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2305 ParseGlobalTypeAndValue(Val1) ||
2306 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2308 if (Val0->getType() != Val1->getType())
2309 return Error(ID.Loc, "operands of constexpr must have same type");
2310 if (!Val0->getType()->isIntOrIntVector())
2311 return Error(ID.Loc,
2312 "constexpr requires integer or integer vector operands");
2313 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2314 ID.Kind = ValID::t_Constant;
2318 case lltok::kw_getelementptr:
2319 case lltok::kw_shufflevector:
2320 case lltok::kw_insertelement:
2321 case lltok::kw_extractelement:
2322 case lltok::kw_select: {
2323 unsigned Opc = Lex.getUIntVal();
2324 SmallVector<Constant*, 16> Elts;
2325 bool InBounds = false;
2327 if (Opc == Instruction::GetElementPtr)
2328 InBounds = EatIfPresent(lltok::kw_inbounds);
2329 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2330 ParseGlobalValueVector(Elts) ||
2331 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2334 if (Opc == Instruction::GetElementPtr) {
2335 if (Elts.size() == 0 || !isa<PointerType>(Elts[0]->getType()))
2336 return Error(ID.Loc, "getelementptr requires pointer operand");
2338 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(),
2339 (Value**)(Elts.data() + 1),
2341 return Error(ID.Loc, "invalid indices for getelementptr");
2342 ID.ConstantVal = InBounds ?
2343 ConstantExpr::getInBoundsGetElementPtr(Elts[0],
2346 ConstantExpr::getGetElementPtr(Elts[0],
2347 Elts.data() + 1, Elts.size() - 1);
2348 } else if (Opc == Instruction::Select) {
2349 if (Elts.size() != 3)
2350 return Error(ID.Loc, "expected three operands to select");
2351 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2353 return Error(ID.Loc, Reason);
2354 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2355 } else if (Opc == Instruction::ShuffleVector) {
2356 if (Elts.size() != 3)
2357 return Error(ID.Loc, "expected three operands to shufflevector");
2358 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2359 return Error(ID.Loc, "invalid operands to shufflevector");
2361 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2362 } else if (Opc == Instruction::ExtractElement) {
2363 if (Elts.size() != 2)
2364 return Error(ID.Loc, "expected two operands to extractelement");
2365 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2366 return Error(ID.Loc, "invalid extractelement operands");
2367 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2369 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2370 if (Elts.size() != 3)
2371 return Error(ID.Loc, "expected three operands to insertelement");
2372 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2373 return Error(ID.Loc, "invalid insertelement operands");
2375 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2378 ID.Kind = ValID::t_Constant;
2387 /// ParseGlobalValue - Parse a global value with the specified type.
2388 bool LLParser::ParseGlobalValue(const Type *Ty, Constant *&V) {
2391 return ParseValID(ID) ||
2392 ConvertGlobalValIDToValue(Ty, ID, V);
2395 /// ConvertGlobalValIDToValue - Apply a type to a ValID to get a fully resolved
2397 bool LLParser::ConvertGlobalValIDToValue(const Type *Ty, ValID &ID,
2399 if (isa<FunctionType>(Ty))
2400 return Error(ID.Loc, "functions are not values, refer to them as pointers");
2403 default: llvm_unreachable("Unknown ValID!");
2404 case ValID::t_Metadata:
2405 return Error(ID.Loc, "invalid use of metadata");
2406 case ValID::t_LocalID:
2407 case ValID::t_LocalName:
2408 return Error(ID.Loc, "invalid use of function-local name");
2409 case ValID::t_InlineAsm:
2410 return Error(ID.Loc, "inline asm can only be an operand of call/invoke");
2411 case ValID::t_GlobalName:
2412 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
2414 case ValID::t_GlobalID:
2415 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
2417 case ValID::t_APSInt:
2418 if (!isa<IntegerType>(Ty))
2419 return Error(ID.Loc, "integer constant must have integer type");
2420 ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
2421 V = ConstantInt::get(Context, ID.APSIntVal);
2423 case ValID::t_APFloat:
2424 if (!Ty->isFloatingPoint() ||
2425 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
2426 return Error(ID.Loc, "floating point constant invalid for type");
2428 // The lexer has no type info, so builds all float and double FP constants
2429 // as double. Fix this here. Long double does not need this.
2430 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble &&
2433 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
2436 V = ConstantFP::get(Context, ID.APFloatVal);
2438 if (V->getType() != Ty)
2439 return Error(ID.Loc, "floating point constant does not have type '" +
2440 Ty->getDescription() + "'");
2444 if (!isa<PointerType>(Ty))
2445 return Error(ID.Loc, "null must be a pointer type");
2446 V = ConstantPointerNull::get(cast<PointerType>(Ty));
2448 case ValID::t_Undef:
2449 // FIXME: LabelTy should not be a first-class type.
2450 if ((!Ty->isFirstClassType() || Ty->isLabelTy()) &&
2451 !isa<OpaqueType>(Ty))
2452 return Error(ID.Loc, "invalid type for undef constant");
2453 V = UndefValue::get(Ty);
2455 case ValID::t_EmptyArray:
2456 if (!isa<ArrayType>(Ty) || cast<ArrayType>(Ty)->getNumElements() != 0)
2457 return Error(ID.Loc, "invalid empty array initializer");
2458 V = UndefValue::get(Ty);
2461 // FIXME: LabelTy should not be a first-class type.
2462 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2463 return Error(ID.Loc, "invalid type for null constant");
2464 V = Constant::getNullValue(Ty);
2466 case ValID::t_Constant:
2467 if (ID.ConstantVal->getType() != Ty)
2468 return Error(ID.Loc, "constant expression type mismatch");
2474 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2475 PATypeHolder Type(Type::getVoidTy(Context));
2476 return ParseType(Type) ||
2477 ParseGlobalValue(Type, V);
2480 /// ParseGlobalValueVector
2482 /// ::= TypeAndValue (',' TypeAndValue)*
2483 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts) {
2485 if (Lex.getKind() == lltok::rbrace ||
2486 Lex.getKind() == lltok::rsquare ||
2487 Lex.getKind() == lltok::greater ||
2488 Lex.getKind() == lltok::rparen)
2492 if (ParseGlobalTypeAndValue(C)) return true;
2495 while (EatIfPresent(lltok::comma)) {
2496 if (ParseGlobalTypeAndValue(C)) return true;
2504 //===----------------------------------------------------------------------===//
2505 // Function Parsing.
2506 //===----------------------------------------------------------------------===//
2508 bool LLParser::ConvertValIDToValue(const Type *Ty, ValID &ID, Value *&V,
2509 PerFunctionState &PFS) {
2510 if (ID.Kind == ValID::t_LocalID)
2511 V = PFS.GetVal(ID.UIntVal, Ty, ID.Loc);
2512 else if (ID.Kind == ValID::t_LocalName)
2513 V = PFS.GetVal(ID.StrVal, Ty, ID.Loc);
2514 else if (ID.Kind == ValID::t_InlineAsm) {
2515 const PointerType *PTy = dyn_cast<PointerType>(Ty);
2516 const FunctionType *FTy =
2517 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
2518 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
2519 return Error(ID.Loc, "invalid type for inline asm constraint string");
2520 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1, ID.UIntVal>>1);
2522 } else if (ID.Kind == ValID::t_Metadata) {
2526 if (ConvertGlobalValIDToValue(Ty, ID, C)) return true;
2534 bool LLParser::ParseValue(const Type *Ty, Value *&V, PerFunctionState &PFS) {
2537 return ParseValID(ID) ||
2538 ConvertValIDToValue(Ty, ID, V, PFS);
2541 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState &PFS) {
2542 PATypeHolder T(Type::getVoidTy(Context));
2543 return ParseType(T) ||
2544 ParseValue(T, V, PFS);
2547 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
2548 PerFunctionState &PFS) {
2551 if (ParseTypeAndValue(V, PFS)) return true;
2552 if (!isa<BasicBlock>(V))
2553 return Error(Loc, "expected a basic block");
2554 BB = cast<BasicBlock>(V);
2560 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
2561 /// Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
2562 /// OptionalAlign OptGC
2563 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
2564 // Parse the linkage.
2565 LocTy LinkageLoc = Lex.getLoc();
2568 unsigned Visibility, RetAttrs;
2570 PATypeHolder RetType(Type::getVoidTy(Context));
2571 LocTy RetTypeLoc = Lex.getLoc();
2572 if (ParseOptionalLinkage(Linkage) ||
2573 ParseOptionalVisibility(Visibility) ||
2574 ParseOptionalCallingConv(CC) ||
2575 ParseOptionalAttrs(RetAttrs, 1) ||
2576 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
2579 // Verify that the linkage is ok.
2580 switch ((GlobalValue::LinkageTypes)Linkage) {
2581 case GlobalValue::ExternalLinkage:
2582 break; // always ok.
2583 case GlobalValue::DLLImportLinkage:
2584 case GlobalValue::ExternalWeakLinkage:
2586 return Error(LinkageLoc, "invalid linkage for function definition");
2588 case GlobalValue::PrivateLinkage:
2589 case GlobalValue::LinkerPrivateLinkage:
2590 case GlobalValue::InternalLinkage:
2591 case GlobalValue::AvailableExternallyLinkage:
2592 case GlobalValue::LinkOnceAnyLinkage:
2593 case GlobalValue::LinkOnceODRLinkage:
2594 case GlobalValue::WeakAnyLinkage:
2595 case GlobalValue::WeakODRLinkage:
2596 case GlobalValue::DLLExportLinkage:
2598 return Error(LinkageLoc, "invalid linkage for function declaration");
2600 case GlobalValue::AppendingLinkage:
2601 case GlobalValue::GhostLinkage:
2602 case GlobalValue::CommonLinkage:
2603 return Error(LinkageLoc, "invalid function linkage type");
2606 if (!FunctionType::isValidReturnType(RetType) ||
2607 isa<OpaqueType>(RetType))
2608 return Error(RetTypeLoc, "invalid function return type");
2610 LocTy NameLoc = Lex.getLoc();
2612 std::string FunctionName;
2613 if (Lex.getKind() == lltok::GlobalVar) {
2614 FunctionName = Lex.getStrVal();
2615 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
2616 unsigned NameID = Lex.getUIntVal();
2618 if (NameID != NumberedVals.size())
2619 return TokError("function expected to be numbered '%" +
2620 utostr(NumberedVals.size()) + "'");
2622 return TokError("expected function name");
2627 if (Lex.getKind() != lltok::lparen)
2628 return TokError("expected '(' in function argument list");
2630 std::vector<ArgInfo> ArgList;
2633 std::string Section;
2637 if (ParseArgumentList(ArgList, isVarArg, false) ||
2638 ParseOptionalAttrs(FuncAttrs, 2) ||
2639 (EatIfPresent(lltok::kw_section) &&
2640 ParseStringConstant(Section)) ||
2641 ParseOptionalAlignment(Alignment) ||
2642 (EatIfPresent(lltok::kw_gc) &&
2643 ParseStringConstant(GC)))
2646 // If the alignment was parsed as an attribute, move to the alignment field.
2647 if (FuncAttrs & Attribute::Alignment) {
2648 Alignment = Attribute::getAlignmentFromAttrs(FuncAttrs);
2649 FuncAttrs &= ~Attribute::Alignment;
2652 // Okay, if we got here, the function is syntactically valid. Convert types
2653 // and do semantic checks.
2654 std::vector<const Type*> ParamTypeList;
2655 SmallVector<AttributeWithIndex, 8> Attrs;
2656 // FIXME : In 3.0, stop accepting zext, sext and inreg as optional function
2658 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
2659 if (FuncAttrs & ObsoleteFuncAttrs) {
2660 RetAttrs |= FuncAttrs & ObsoleteFuncAttrs;
2661 FuncAttrs &= ~ObsoleteFuncAttrs;
2664 if (RetAttrs != Attribute::None)
2665 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
2667 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2668 ParamTypeList.push_back(ArgList[i].Type);
2669 if (ArgList[i].Attrs != Attribute::None)
2670 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
2673 if (FuncAttrs != Attribute::None)
2674 Attrs.push_back(AttributeWithIndex::get(~0, FuncAttrs));
2676 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
2678 if (PAL.paramHasAttr(1, Attribute::StructRet) &&
2679 RetType != Type::getVoidTy(Context))
2680 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
2682 const FunctionType *FT =
2683 FunctionType::get(RetType, ParamTypeList, isVarArg);
2684 const PointerType *PFT = PointerType::getUnqual(FT);
2687 if (!FunctionName.empty()) {
2688 // If this was a definition of a forward reference, remove the definition
2689 // from the forward reference table and fill in the forward ref.
2690 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
2691 ForwardRefVals.find(FunctionName);
2692 if (FRVI != ForwardRefVals.end()) {
2693 Fn = M->getFunction(FunctionName);
2694 ForwardRefVals.erase(FRVI);
2695 } else if ((Fn = M->getFunction(FunctionName))) {
2696 // If this function already exists in the symbol table, then it is
2697 // multiply defined. We accept a few cases for old backwards compat.
2698 // FIXME: Remove this stuff for LLVM 3.0.
2699 if (Fn->getType() != PFT || Fn->getAttributes() != PAL ||
2700 (!Fn->isDeclaration() && isDefine)) {
2701 // If the redefinition has different type or different attributes,
2702 // reject it. If both have bodies, reject it.
2703 return Error(NameLoc, "invalid redefinition of function '" +
2704 FunctionName + "'");
2705 } else if (Fn->isDeclaration()) {
2706 // Make sure to strip off any argument names so we can't get conflicts.
2707 for (Function::arg_iterator AI = Fn->arg_begin(), AE = Fn->arg_end();
2711 } else if (M->getNamedValue(FunctionName)) {
2712 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
2716 // If this is a definition of a forward referenced function, make sure the
2718 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
2719 = ForwardRefValIDs.find(NumberedVals.size());
2720 if (I != ForwardRefValIDs.end()) {
2721 Fn = cast<Function>(I->second.first);
2722 if (Fn->getType() != PFT)
2723 return Error(NameLoc, "type of definition and forward reference of '@" +
2724 utostr(NumberedVals.size()) +"' disagree");
2725 ForwardRefValIDs.erase(I);
2730 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
2731 else // Move the forward-reference to the correct spot in the module.
2732 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
2734 if (FunctionName.empty())
2735 NumberedVals.push_back(Fn);
2737 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
2738 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
2739 Fn->setCallingConv(CC);
2740 Fn->setAttributes(PAL);
2741 Fn->setAlignment(Alignment);
2742 Fn->setSection(Section);
2743 if (!GC.empty()) Fn->setGC(GC.c_str());
2745 // Add all of the arguments we parsed to the function.
2746 Function::arg_iterator ArgIt = Fn->arg_begin();
2747 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
2748 // If we run out of arguments in the Function prototype, exit early.
2749 // FIXME: REMOVE THIS IN LLVM 3.0, this is just for the mismatch case above.
2750 if (ArgIt == Fn->arg_end()) break;
2752 // If the argument has a name, insert it into the argument symbol table.
2753 if (ArgList[i].Name.empty()) continue;
2755 // Set the name, if it conflicted, it will be auto-renamed.
2756 ArgIt->setName(ArgList[i].Name);
2758 if (ArgIt->getNameStr() != ArgList[i].Name)
2759 return Error(ArgList[i].Loc, "redefinition of argument '%" +
2760 ArgList[i].Name + "'");
2767 /// ParseFunctionBody
2768 /// ::= '{' BasicBlock+ '}'
2769 /// ::= 'begin' BasicBlock+ 'end' // FIXME: remove in LLVM 3.0
2771 bool LLParser::ParseFunctionBody(Function &Fn) {
2772 if (Lex.getKind() != lltok::lbrace && Lex.getKind() != lltok::kw_begin)
2773 return TokError("expected '{' in function body");
2774 Lex.Lex(); // eat the {.
2776 int FunctionNumber = -1;
2777 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
2779 PerFunctionState PFS(*this, Fn, FunctionNumber);
2781 while (Lex.getKind() != lltok::rbrace && Lex.getKind() != lltok::kw_end)
2782 if (ParseBasicBlock(PFS)) return true;
2787 // Verify function is ok.
2788 return PFS.FinishFunction();
2792 /// ::= LabelStr? Instruction*
2793 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
2794 // If this basic block starts out with a name, remember it.
2796 LocTy NameLoc = Lex.getLoc();
2797 if (Lex.getKind() == lltok::LabelStr) {
2798 Name = Lex.getStrVal();
2802 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
2803 if (BB == 0) return true;
2805 std::string NameStr;
2807 // Parse the instructions in this block until we get a terminator.
2810 // This instruction may have three possibilities for a name: a) none
2811 // specified, b) name specified "%foo =", c) number specified: "%4 =".
2812 LocTy NameLoc = Lex.getLoc();
2816 if (Lex.getKind() == lltok::LocalVarID) {
2817 NameID = Lex.getUIntVal();
2819 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
2821 } else if (Lex.getKind() == lltok::LocalVar ||
2822 // FIXME: REMOVE IN LLVM 3.0
2823 Lex.getKind() == lltok::StringConstant) {
2824 NameStr = Lex.getStrVal();
2826 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
2830 if (ParseInstruction(Inst, BB, PFS)) return true;
2831 if (EatIfPresent(lltok::comma))
2832 ParseOptionalCustomMetadata();
2834 // Set metadata attached with this instruction.
2835 for (SmallVector<std::pair<unsigned, MDNode *>, 2>::iterator
2836 MDI = MDsOnInst.begin(), MDE = MDsOnInst.end(); MDI != MDE; ++MDI)
2837 Inst->setMetadata(MDI->first, MDI->second);
2840 BB->getInstList().push_back(Inst);
2842 // Set the name on the instruction.
2843 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
2844 } while (!isa<TerminatorInst>(Inst));
2849 //===----------------------------------------------------------------------===//
2850 // Instruction Parsing.
2851 //===----------------------------------------------------------------------===//
2853 /// ParseInstruction - Parse one of the many different instructions.
2855 bool LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
2856 PerFunctionState &PFS) {
2857 lltok::Kind Token = Lex.getKind();
2858 if (Token == lltok::Eof)
2859 return TokError("found end of file when expecting more instructions");
2860 LocTy Loc = Lex.getLoc();
2861 unsigned KeywordVal = Lex.getUIntVal();
2862 Lex.Lex(); // Eat the keyword.
2865 default: return Error(Loc, "expected instruction opcode");
2866 // Terminator Instructions.
2867 case lltok::kw_unwind: Inst = new UnwindInst(Context); return false;
2868 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
2869 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
2870 case lltok::kw_br: return ParseBr(Inst, PFS);
2871 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
2872 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
2873 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
2874 // Binary Operators.
2877 case lltok::kw_mul: {
2880 LocTy ModifierLoc = Lex.getLoc();
2881 if (EatIfPresent(lltok::kw_nuw))
2883 if (EatIfPresent(lltok::kw_nsw)) {
2885 if (EatIfPresent(lltok::kw_nuw))
2888 // API compatibility: Accept either integer or floating-point types.
2889 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 0);
2891 if (!Inst->getType()->isIntOrIntVector()) {
2893 return Error(ModifierLoc, "nuw only applies to integer operations");
2895 return Error(ModifierLoc, "nsw only applies to integer operations");
2898 cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
2900 cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
2904 case lltok::kw_fadd:
2905 case lltok::kw_fsub:
2906 case lltok::kw_fmul: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
2908 case lltok::kw_sdiv: {
2910 if (EatIfPresent(lltok::kw_exact))
2912 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 1);
2915 cast<BinaryOperator>(Inst)->setIsExact(true);
2919 case lltok::kw_udiv:
2920 case lltok::kw_urem:
2921 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
2922 case lltok::kw_fdiv:
2923 case lltok::kw_frem: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
2925 case lltok::kw_lshr:
2926 case lltok::kw_ashr:
2929 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
2930 case lltok::kw_icmp:
2931 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
2933 case lltok::kw_trunc:
2934 case lltok::kw_zext:
2935 case lltok::kw_sext:
2936 case lltok::kw_fptrunc:
2937 case lltok::kw_fpext:
2938 case lltok::kw_bitcast:
2939 case lltok::kw_uitofp:
2940 case lltok::kw_sitofp:
2941 case lltok::kw_fptoui:
2942 case lltok::kw_fptosi:
2943 case lltok::kw_inttoptr:
2944 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
2946 case lltok::kw_select: return ParseSelect(Inst, PFS);
2947 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
2948 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
2949 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
2950 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
2951 case lltok::kw_phi: return ParsePHI(Inst, PFS);
2952 case lltok::kw_call: return ParseCall(Inst, PFS, false);
2953 case lltok::kw_tail: return ParseCall(Inst, PFS, true);
2955 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
2956 case lltok::kw_malloc: return ParseAlloc(Inst, PFS, BB, false);
2957 case lltok::kw_free: return ParseFree(Inst, PFS, BB);
2958 case lltok::kw_load: return ParseLoad(Inst, PFS, false);
2959 case lltok::kw_store: return ParseStore(Inst, PFS, false);
2960 case lltok::kw_volatile:
2961 if (EatIfPresent(lltok::kw_load))
2962 return ParseLoad(Inst, PFS, true);
2963 else if (EatIfPresent(lltok::kw_store))
2964 return ParseStore(Inst, PFS, true);
2966 return TokError("expected 'load' or 'store'");
2967 case lltok::kw_getresult: return ParseGetResult(Inst, PFS);
2968 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
2969 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
2970 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
2974 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
2975 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
2976 if (Opc == Instruction::FCmp) {
2977 switch (Lex.getKind()) {
2978 default: TokError("expected fcmp predicate (e.g. 'oeq')");
2979 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
2980 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
2981 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
2982 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
2983 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
2984 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
2985 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
2986 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
2987 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
2988 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
2989 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
2990 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
2991 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
2992 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
2993 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
2994 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
2997 switch (Lex.getKind()) {
2998 default: TokError("expected icmp predicate (e.g. 'eq')");
2999 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
3000 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
3001 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
3002 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
3003 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
3004 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
3005 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
3006 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
3007 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
3008 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3015 //===----------------------------------------------------------------------===//
3016 // Terminator Instructions.
3017 //===----------------------------------------------------------------------===//
3019 /// ParseRet - Parse a return instruction.
3020 /// ::= 'ret' void (',' !dbg, !1)*
3021 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
3022 /// ::= 'ret' TypeAndValue (',' TypeAndValue)+ (',' !dbg, !1)*
3023 /// [[obsolete: LLVM 3.0]]
3024 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3025 PerFunctionState &PFS) {
3026 PATypeHolder Ty(Type::getVoidTy(Context));
3027 if (ParseType(Ty, true /*void allowed*/)) return true;
3029 if (Ty->isVoidTy()) {
3030 Inst = ReturnInst::Create(Context);
3035 if (ParseValue(Ty, RV, PFS)) return true;
3037 if (EatIfPresent(lltok::comma)) {
3038 // Parse optional custom metadata, e.g. !dbg
3039 if (Lex.getKind() == lltok::NamedOrCustomMD) {
3040 if (ParseOptionalCustomMetadata()) return true;
3042 // The normal case is one return value.
3043 // FIXME: LLVM 3.0 remove MRV support for 'ret i32 1, i32 2', requiring
3044 // use of 'ret {i32,i32} {i32 1, i32 2}'
3045 SmallVector<Value*, 8> RVs;
3049 // If optional custom metadata, e.g. !dbg is seen then this is the
3051 if (Lex.getKind() == lltok::NamedOrCustomMD)
3053 if (ParseTypeAndValue(RV, PFS)) return true;
3055 } while (EatIfPresent(lltok::comma));
3057 RV = UndefValue::get(PFS.getFunction().getReturnType());
3058 for (unsigned i = 0, e = RVs.size(); i != e; ++i) {
3059 Instruction *I = InsertValueInst::Create(RV, RVs[i], i, "mrv");
3060 BB->getInstList().push_back(I);
3066 Inst = ReturnInst::Create(Context, RV);
3072 /// ::= 'br' TypeAndValue
3073 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3074 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
3077 BasicBlock *Op1, *Op2;
3078 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
3080 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
3081 Inst = BranchInst::Create(BB);
3085 if (Op0->getType() != Type::getInt1Ty(Context))
3086 return Error(Loc, "branch condition must have 'i1' type");
3088 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
3089 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
3090 ParseToken(lltok::comma, "expected ',' after true destination") ||
3091 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
3094 Inst = BranchInst::Create(Op1, Op2, Op0);
3100 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
3102 /// ::= (TypeAndValue ',' TypeAndValue)*
3103 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
3104 LocTy CondLoc, BBLoc;
3106 BasicBlock *DefaultBB;
3107 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
3108 ParseToken(lltok::comma, "expected ',' after switch condition") ||
3109 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
3110 ParseToken(lltok::lsquare, "expected '[' with switch table"))
3113 if (!isa<IntegerType>(Cond->getType()))
3114 return Error(CondLoc, "switch condition must have integer type");
3116 // Parse the jump table pairs.
3117 SmallPtrSet<Value*, 32> SeenCases;
3118 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
3119 while (Lex.getKind() != lltok::rsquare) {
3123 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
3124 ParseToken(lltok::comma, "expected ',' after case value") ||
3125 ParseTypeAndBasicBlock(DestBB, PFS))
3128 if (!SeenCases.insert(Constant))
3129 return Error(CondLoc, "duplicate case value in switch");
3130 if (!isa<ConstantInt>(Constant))
3131 return Error(CondLoc, "case value is not a constant integer");
3133 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
3136 Lex.Lex(); // Eat the ']'.
3138 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
3139 for (unsigned i = 0, e = Table.size(); i != e; ++i)
3140 SI->addCase(Table[i].first, Table[i].second);
3147 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
3148 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
3151 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
3152 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
3153 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
3156 if (!isa<PointerType>(Address->getType()))
3157 return Error(AddrLoc, "indirectbr address must have pointer type");
3159 // Parse the destination list.
3160 SmallVector<BasicBlock*, 16> DestList;
3162 if (Lex.getKind() != lltok::rsquare) {
3164 if (ParseTypeAndBasicBlock(DestBB, PFS))
3166 DestList.push_back(DestBB);
3168 while (EatIfPresent(lltok::comma)) {
3169 if (ParseTypeAndBasicBlock(DestBB, PFS))
3171 DestList.push_back(DestBB);
3175 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
3178 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
3179 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
3180 IBI->addDestination(DestList[i]);
3187 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3188 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3189 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3190 LocTy CallLoc = Lex.getLoc();
3191 unsigned RetAttrs, FnAttrs;
3193 PATypeHolder RetType(Type::getVoidTy(Context));
3196 SmallVector<ParamInfo, 16> ArgList;
3198 BasicBlock *NormalBB, *UnwindBB;
3199 if (ParseOptionalCallingConv(CC) ||
3200 ParseOptionalAttrs(RetAttrs, 1) ||
3201 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3202 ParseValID(CalleeID) ||
3203 ParseParameterList(ArgList, PFS) ||
3204 ParseOptionalAttrs(FnAttrs, 2) ||
3205 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3206 ParseTypeAndBasicBlock(NormalBB, PFS) ||
3207 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3208 ParseTypeAndBasicBlock(UnwindBB, PFS))
3211 // If RetType is a non-function pointer type, then this is the short syntax
3212 // for the call, which means that RetType is just the return type. Infer the
3213 // rest of the function argument types from the arguments that are present.
3214 const PointerType *PFTy = 0;
3215 const FunctionType *Ty = 0;
3216 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3217 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3218 // Pull out the types of all of the arguments...
3219 std::vector<const Type*> ParamTypes;
3220 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3221 ParamTypes.push_back(ArgList[i].V->getType());
3223 if (!FunctionType::isValidReturnType(RetType))
3224 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3226 Ty = FunctionType::get(RetType, ParamTypes, false);
3227 PFTy = PointerType::getUnqual(Ty);
3230 // Look up the callee.
3232 if (ConvertValIDToValue(PFTy, CalleeID, Callee, PFS)) return true;
3234 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
3235 // function attributes.
3236 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
3237 if (FnAttrs & ObsoleteFuncAttrs) {
3238 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
3239 FnAttrs &= ~ObsoleteFuncAttrs;
3242 // Set up the Attributes for the function.
3243 SmallVector<AttributeWithIndex, 8> Attrs;
3244 if (RetAttrs != Attribute::None)
3245 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3247 SmallVector<Value*, 8> Args;
3249 // Loop through FunctionType's arguments and ensure they are specified
3250 // correctly. Also, gather any parameter attributes.
3251 FunctionType::param_iterator I = Ty->param_begin();
3252 FunctionType::param_iterator E = Ty->param_end();
3253 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3254 const Type *ExpectedTy = 0;
3257 } else if (!Ty->isVarArg()) {
3258 return Error(ArgList[i].Loc, "too many arguments specified");
3261 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3262 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3263 ExpectedTy->getDescription() + "'");
3264 Args.push_back(ArgList[i].V);
3265 if (ArgList[i].Attrs != Attribute::None)
3266 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3270 return Error(CallLoc, "not enough parameters specified for call");
3272 if (FnAttrs != Attribute::None)
3273 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3275 // Finish off the Attributes and check them
3276 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3278 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB,
3279 Args.begin(), Args.end());
3280 II->setCallingConv(CC);
3281 II->setAttributes(PAL);
3288 //===----------------------------------------------------------------------===//
3289 // Binary Operators.
3290 //===----------------------------------------------------------------------===//
3293 /// ::= ArithmeticOps TypeAndValue ',' Value
3295 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3296 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3297 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3298 unsigned Opc, unsigned OperandType) {
3299 LocTy Loc; Value *LHS, *RHS;
3300 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3301 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3302 ParseValue(LHS->getType(), RHS, PFS))
3306 switch (OperandType) {
3307 default: llvm_unreachable("Unknown operand type!");
3308 case 0: // int or FP.
3309 Valid = LHS->getType()->isIntOrIntVector() ||
3310 LHS->getType()->isFPOrFPVector();
3312 case 1: Valid = LHS->getType()->isIntOrIntVector(); break;
3313 case 2: Valid = LHS->getType()->isFPOrFPVector(); break;
3317 return Error(Loc, "invalid operand type for instruction");
3319 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3324 /// ::= ArithmeticOps TypeAndValue ',' Value {
3325 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3327 LocTy Loc; Value *LHS, *RHS;
3328 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3329 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3330 ParseValue(LHS->getType(), RHS, PFS))
3333 if (!LHS->getType()->isIntOrIntVector())
3334 return Error(Loc,"instruction requires integer or integer vector operands");
3336 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3342 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3343 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3344 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3346 // Parse the integer/fp comparison predicate.
3350 if (ParseCmpPredicate(Pred, Opc) ||
3351 ParseTypeAndValue(LHS, Loc, PFS) ||
3352 ParseToken(lltok::comma, "expected ',' after compare value") ||
3353 ParseValue(LHS->getType(), RHS, PFS))
3356 if (Opc == Instruction::FCmp) {
3357 if (!LHS->getType()->isFPOrFPVector())
3358 return Error(Loc, "fcmp requires floating point operands");
3359 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3361 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
3362 if (!LHS->getType()->isIntOrIntVector() &&
3363 !isa<PointerType>(LHS->getType()))
3364 return Error(Loc, "icmp requires integer operands");
3365 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3370 //===----------------------------------------------------------------------===//
3371 // Other Instructions.
3372 //===----------------------------------------------------------------------===//
3376 /// ::= CastOpc TypeAndValue 'to' Type
3377 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
3379 LocTy Loc; Value *Op;
3380 PATypeHolder DestTy(Type::getVoidTy(Context));
3381 if (ParseTypeAndValue(Op, Loc, PFS) ||
3382 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
3386 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
3387 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
3388 return Error(Loc, "invalid cast opcode for cast from '" +
3389 Op->getType()->getDescription() + "' to '" +
3390 DestTy->getDescription() + "'");
3392 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
3397 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3398 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
3400 Value *Op0, *Op1, *Op2;
3401 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3402 ParseToken(lltok::comma, "expected ',' after select condition") ||
3403 ParseTypeAndValue(Op1, PFS) ||
3404 ParseToken(lltok::comma, "expected ',' after select value") ||
3405 ParseTypeAndValue(Op2, PFS))
3408 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
3409 return Error(Loc, Reason);
3411 Inst = SelectInst::Create(Op0, Op1, Op2);
3416 /// ::= 'va_arg' TypeAndValue ',' Type
3417 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
3419 PATypeHolder EltTy(Type::getVoidTy(Context));
3421 if (ParseTypeAndValue(Op, PFS) ||
3422 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
3423 ParseType(EltTy, TypeLoc))
3426 if (!EltTy->isFirstClassType())
3427 return Error(TypeLoc, "va_arg requires operand with first class type");
3429 Inst = new VAArgInst(Op, EltTy);
3433 /// ParseExtractElement
3434 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
3435 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
3438 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3439 ParseToken(lltok::comma, "expected ',' after extract value") ||
3440 ParseTypeAndValue(Op1, PFS))
3443 if (!ExtractElementInst::isValidOperands(Op0, Op1))
3444 return Error(Loc, "invalid extractelement operands");
3446 Inst = ExtractElementInst::Create(Op0, Op1);
3450 /// ParseInsertElement
3451 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3452 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
3454 Value *Op0, *Op1, *Op2;
3455 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3456 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3457 ParseTypeAndValue(Op1, PFS) ||
3458 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3459 ParseTypeAndValue(Op2, PFS))
3462 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
3463 return Error(Loc, "invalid insertelement operands");
3465 Inst = InsertElementInst::Create(Op0, Op1, Op2);
3469 /// ParseShuffleVector
3470 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3471 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
3473 Value *Op0, *Op1, *Op2;
3474 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3475 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
3476 ParseTypeAndValue(Op1, PFS) ||
3477 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
3478 ParseTypeAndValue(Op2, PFS))
3481 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
3482 return Error(Loc, "invalid extractelement operands");
3484 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
3489 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
3490 bool LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
3491 PATypeHolder Ty(Type::getVoidTy(Context));
3493 LocTy TypeLoc = Lex.getLoc();
3495 if (ParseType(Ty) ||
3496 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3497 ParseValue(Ty, Op0, PFS) ||
3498 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3499 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3500 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3503 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
3505 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
3507 if (!EatIfPresent(lltok::comma))
3510 if (Lex.getKind() == lltok::NamedOrCustomMD)
3513 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3514 ParseValue(Ty, Op0, PFS) ||
3515 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3516 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3517 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3521 if (Lex.getKind() == lltok::NamedOrCustomMD)
3522 if (ParseOptionalCustomMetadata()) return true;
3524 if (!Ty->isFirstClassType())
3525 return Error(TypeLoc, "phi node must have first class type");
3527 PHINode *PN = PHINode::Create(Ty);
3528 PN->reserveOperandSpace(PHIVals.size());
3529 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
3530 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
3536 /// ::= 'tail'? 'call' OptionalCallingConv OptionalAttrs Type Value
3537 /// ParameterList OptionalAttrs
3538 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
3540 unsigned RetAttrs, FnAttrs;
3542 PATypeHolder RetType(Type::getVoidTy(Context));
3545 SmallVector<ParamInfo, 16> ArgList;
3546 LocTy CallLoc = Lex.getLoc();
3548 if ((isTail && ParseToken(lltok::kw_call, "expected 'tail call'")) ||
3549 ParseOptionalCallingConv(CC) ||
3550 ParseOptionalAttrs(RetAttrs, 1) ||
3551 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3552 ParseValID(CalleeID) ||
3553 ParseParameterList(ArgList, PFS) ||
3554 ParseOptionalAttrs(FnAttrs, 2))
3557 // If RetType is a non-function pointer type, then this is the short syntax
3558 // for the call, which means that RetType is just the return type. Infer the
3559 // rest of the function argument types from the arguments that are present.
3560 const PointerType *PFTy = 0;
3561 const FunctionType *Ty = 0;
3562 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3563 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3564 // Pull out the types of all of the arguments...
3565 std::vector<const Type*> ParamTypes;
3566 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3567 ParamTypes.push_back(ArgList[i].V->getType());
3569 if (!FunctionType::isValidReturnType(RetType))
3570 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3572 Ty = FunctionType::get(RetType, ParamTypes, false);
3573 PFTy = PointerType::getUnqual(Ty);
3576 // Look up the callee.
3578 if (ConvertValIDToValue(PFTy, CalleeID, Callee, PFS)) return true;
3580 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
3581 // function attributes.
3582 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
3583 if (FnAttrs & ObsoleteFuncAttrs) {
3584 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
3585 FnAttrs &= ~ObsoleteFuncAttrs;
3588 // Set up the Attributes for the function.
3589 SmallVector<AttributeWithIndex, 8> Attrs;
3590 if (RetAttrs != Attribute::None)
3591 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3593 SmallVector<Value*, 8> Args;
3595 // Loop through FunctionType's arguments and ensure they are specified
3596 // correctly. Also, gather any parameter attributes.
3597 FunctionType::param_iterator I = Ty->param_begin();
3598 FunctionType::param_iterator E = Ty->param_end();
3599 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3600 const Type *ExpectedTy = 0;
3603 } else if (!Ty->isVarArg()) {
3604 return Error(ArgList[i].Loc, "too many arguments specified");
3607 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3608 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3609 ExpectedTy->getDescription() + "'");
3610 Args.push_back(ArgList[i].V);
3611 if (ArgList[i].Attrs != Attribute::None)
3612 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3616 return Error(CallLoc, "not enough parameters specified for call");
3618 if (FnAttrs != Attribute::None)
3619 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3621 // Finish off the Attributes and check them
3622 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3624 CallInst *CI = CallInst::Create(Callee, Args.begin(), Args.end());
3625 CI->setTailCall(isTail);
3626 CI->setCallingConv(CC);
3627 CI->setAttributes(PAL);
3632 //===----------------------------------------------------------------------===//
3633 // Memory Instructions.
3634 //===----------------------------------------------------------------------===//
3637 /// ::= 'malloc' Type (',' TypeAndValue)? (',' OptionalInfo)?
3638 /// ::= 'alloca' Type (',' TypeAndValue)? (',' OptionalInfo)?
3639 bool LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS,
3640 BasicBlock* BB, bool isAlloca) {
3641 PATypeHolder Ty(Type::getVoidTy(Context));
3644 unsigned Alignment = 0;
3645 if (ParseType(Ty)) return true;
3647 if (EatIfPresent(lltok::comma)) {
3648 if (Lex.getKind() == lltok::kw_align
3649 || Lex.getKind() == lltok::NamedOrCustomMD) {
3650 if (ParseOptionalInfo(Alignment)) return true;
3652 if (ParseTypeAndValue(Size, SizeLoc, PFS)) return true;
3653 if (EatIfPresent(lltok::comma))
3654 if (ParseOptionalInfo(Alignment)) return true;
3658 if (Size && Size->getType() != Type::getInt32Ty(Context))
3659 return Error(SizeLoc, "element count must be i32");
3662 Inst = new AllocaInst(Ty, Size, Alignment);
3666 // Autoupgrade old malloc instruction to malloc call.
3667 // FIXME: Remove in LLVM 3.0.
3668 const Type *IntPtrTy = Type::getInt32Ty(Context);
3669 Constant *AllocSize = ConstantExpr::getSizeOf(Ty);
3670 AllocSize = ConstantExpr::getTruncOrBitCast(AllocSize, IntPtrTy);
3672 // Prototype malloc as "void *(int32)".
3673 // This function is renamed as "malloc" in ValidateEndOfModule().
3674 MallocF = cast<Function>(
3675 M->getOrInsertFunction("", Type::getInt8PtrTy(Context), IntPtrTy, NULL));
3676 Inst = CallInst::CreateMalloc(BB, IntPtrTy, Ty, AllocSize, Size, MallocF);
3681 /// ::= 'free' TypeAndValue
3682 bool LLParser::ParseFree(Instruction *&Inst, PerFunctionState &PFS,
3684 Value *Val; LocTy Loc;
3685 if (ParseTypeAndValue(Val, Loc, PFS)) return true;
3686 if (!isa<PointerType>(Val->getType()))
3687 return Error(Loc, "operand to free must be a pointer");
3688 Inst = CallInst::CreateFree(Val, BB);
3693 /// ::= 'volatile'? 'load' TypeAndValue (',' OptionalInfo)?
3694 bool LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS,
3696 Value *Val; LocTy Loc;
3697 unsigned Alignment = 0;
3698 if (ParseTypeAndValue(Val, Loc, PFS)) return true;
3700 if (EatIfPresent(lltok::comma))
3701 if (ParseOptionalInfo(Alignment)) return true;
3703 if (!isa<PointerType>(Val->getType()) ||
3704 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
3705 return Error(Loc, "load operand must be a pointer to a first class type");
3707 Inst = new LoadInst(Val, "", isVolatile, Alignment);
3712 /// ::= 'volatile'? 'store' TypeAndValue ',' TypeAndValue (',' 'align' i32)?
3713 bool LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS,
3715 Value *Val, *Ptr; LocTy Loc, PtrLoc;
3716 unsigned Alignment = 0;
3717 if (ParseTypeAndValue(Val, Loc, PFS) ||
3718 ParseToken(lltok::comma, "expected ',' after store operand") ||
3719 ParseTypeAndValue(Ptr, PtrLoc, PFS))
3722 if (EatIfPresent(lltok::comma))
3723 if (ParseOptionalInfo(Alignment)) return true;
3725 if (!isa<PointerType>(Ptr->getType()))
3726 return Error(PtrLoc, "store operand must be a pointer");
3727 if (!Val->getType()->isFirstClassType())
3728 return Error(Loc, "store operand must be a first class value");
3729 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
3730 return Error(Loc, "stored value and pointer type do not match");
3732 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment);
3737 /// ::= 'getresult' TypeAndValue ',' i32
3738 /// FIXME: Remove support for getresult in LLVM 3.0
3739 bool LLParser::ParseGetResult(Instruction *&Inst, PerFunctionState &PFS) {
3740 Value *Val; LocTy ValLoc, EltLoc;
3742 if (ParseTypeAndValue(Val, ValLoc, PFS) ||
3743 ParseToken(lltok::comma, "expected ',' after getresult operand") ||
3744 ParseUInt32(Element, EltLoc))
3747 if (!isa<StructType>(Val->getType()) && !isa<ArrayType>(Val->getType()))
3748 return Error(ValLoc, "getresult inst requires an aggregate operand");
3749 if (!ExtractValueInst::getIndexedType(Val->getType(), Element))
3750 return Error(EltLoc, "invalid getresult index for value");
3751 Inst = ExtractValueInst::Create(Val, Element);
3755 /// ParseGetElementPtr
3756 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
3757 bool LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
3758 Value *Ptr, *Val; LocTy Loc, EltLoc;
3760 bool InBounds = EatIfPresent(lltok::kw_inbounds);
3762 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
3764 if (!isa<PointerType>(Ptr->getType()))
3765 return Error(Loc, "base of getelementptr must be a pointer");
3767 SmallVector<Value*, 16> Indices;
3768 while (EatIfPresent(lltok::comma)) {
3769 if (Lex.getKind() == lltok::NamedOrCustomMD)
3771 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
3772 if (!isa<IntegerType>(Val->getType()))
3773 return Error(EltLoc, "getelementptr index must be an integer");
3774 Indices.push_back(Val);
3776 if (Lex.getKind() == lltok::NamedOrCustomMD)
3777 if (ParseOptionalCustomMetadata()) return true;
3779 if (!GetElementPtrInst::getIndexedType(Ptr->getType(),
3780 Indices.begin(), Indices.end()))
3781 return Error(Loc, "invalid getelementptr indices");
3782 Inst = GetElementPtrInst::Create(Ptr, Indices.begin(), Indices.end());
3784 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
3788 /// ParseExtractValue
3789 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
3790 bool LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
3791 Value *Val; LocTy Loc;
3792 SmallVector<unsigned, 4> Indices;
3793 if (ParseTypeAndValue(Val, Loc, PFS) ||
3794 ParseIndexList(Indices))
3796 if (Lex.getKind() == lltok::NamedOrCustomMD)
3797 if (ParseOptionalCustomMetadata()) return true;
3799 if (!isa<StructType>(Val->getType()) && !isa<ArrayType>(Val->getType()))
3800 return Error(Loc, "extractvalue operand must be array or struct");
3802 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
3804 return Error(Loc, "invalid indices for extractvalue");
3805 Inst = ExtractValueInst::Create(Val, Indices.begin(), Indices.end());
3809 /// ParseInsertValue
3810 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
3811 bool LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
3812 Value *Val0, *Val1; LocTy Loc0, Loc1;
3813 SmallVector<unsigned, 4> Indices;
3814 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
3815 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
3816 ParseTypeAndValue(Val1, Loc1, PFS) ||
3817 ParseIndexList(Indices))
3819 if (Lex.getKind() == lltok::NamedOrCustomMD)
3820 if (ParseOptionalCustomMetadata()) return true;
3822 if (!isa<StructType>(Val0->getType()) && !isa<ArrayType>(Val0->getType()))
3823 return Error(Loc0, "extractvalue operand must be array or struct");
3825 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
3827 return Error(Loc0, "invalid indices for insertvalue");
3828 Inst = InsertValueInst::Create(Val0, Val1, Indices.begin(), Indices.end());
3832 //===----------------------------------------------------------------------===//
3833 // Embedded metadata.
3834 //===----------------------------------------------------------------------===//
3836 /// ParseMDNodeVector
3837 /// ::= Element (',' Element)*
3839 /// ::= 'null' | TypeAndValue
3840 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts) {
3841 assert(Lex.getKind() == lltok::lbrace);
3845 if (Lex.getKind() == lltok::kw_null) {
3849 PATypeHolder Ty(Type::getVoidTy(Context));
3850 if (ParseType(Ty)) return true;
3851 if (Lex.getKind() == lltok::Metadata) {
3853 MetadataBase *Node = 0;
3854 if (!ParseMDNode(Node))
3857 MetadataBase *MDS = 0;
3858 if (ParseMDString(MDS)) return true;
3863 if (ParseGlobalValue(Ty, C)) return true;
3868 } while (EatIfPresent(lltok::comma));