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
1109 bool LLParser::ParseOptionalCustomMetadata() {
1110 if (Lex.getKind() != lltok::NamedOrCustomMD)
1113 std::string Name = Lex.getStrVal();
1116 if (Lex.getKind() != lltok::Metadata)
1117 return TokError("Expected '!' here");
1121 if (ParseMDNode(Node)) return true;
1123 unsigned MDK = M->getMDKindID(Name.c_str());
1124 MDsOnInst.push_back(std::make_pair(MDK, cast<MDNode>(Node)));
1128 /// ParseOptionalAlignment
1131 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1133 if (!EatIfPresent(lltok::kw_align))
1135 LocTy AlignLoc = Lex.getLoc();
1136 if (ParseUInt32(Alignment)) return true;
1137 if (!isPowerOf2_32(Alignment))
1138 return Error(AlignLoc, "alignment is not a power of two");
1142 /// ParseOptionalInfo
1143 /// ::= OptionalInfo (',' OptionalInfo)+
1144 bool LLParser::ParseOptionalInfo(unsigned &Alignment) {
1146 // FIXME: Handle customized metadata info attached with an instruction.
1148 if (Lex.getKind() == lltok::NamedOrCustomMD) {
1149 if (ParseOptionalCustomMetadata()) return true;
1150 } else if (Lex.getKind() == lltok::kw_align) {
1151 if (ParseOptionalAlignment(Alignment)) return true;
1154 } while (EatIfPresent(lltok::comma));
1161 /// ::= (',' uint32)+
1162 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices) {
1163 if (Lex.getKind() != lltok::comma)
1164 return TokError("expected ',' as start of index list");
1166 while (EatIfPresent(lltok::comma)) {
1167 if (Lex.getKind() == lltok::NamedOrCustomMD)
1170 if (ParseUInt32(Idx)) return true;
1171 Indices.push_back(Idx);
1177 //===----------------------------------------------------------------------===//
1179 //===----------------------------------------------------------------------===//
1181 /// ParseType - Parse and resolve a full type.
1182 bool LLParser::ParseType(PATypeHolder &Result, bool AllowVoid) {
1183 LocTy TypeLoc = Lex.getLoc();
1184 if (ParseTypeRec(Result)) return true;
1186 // Verify no unresolved uprefs.
1187 if (!UpRefs.empty())
1188 return Error(UpRefs.back().Loc, "invalid unresolved type up reference");
1190 if (!AllowVoid && Result.get()->isVoidTy())
1191 return Error(TypeLoc, "void type only allowed for function results");
1196 /// HandleUpRefs - Every time we finish a new layer of types, this function is
1197 /// called. It loops through the UpRefs vector, which is a list of the
1198 /// currently active types. For each type, if the up-reference is contained in
1199 /// the newly completed type, we decrement the level count. When the level
1200 /// count reaches zero, the up-referenced type is the type that is passed in:
1201 /// thus we can complete the cycle.
1203 PATypeHolder LLParser::HandleUpRefs(const Type *ty) {
1204 // If Ty isn't abstract, or if there are no up-references in it, then there is
1205 // nothing to resolve here.
1206 if (!ty->isAbstract() || UpRefs.empty()) return ty;
1208 PATypeHolder Ty(ty);
1210 dbgs() << "Type '" << Ty->getDescription()
1211 << "' newly formed. Resolving upreferences.\n"
1212 << UpRefs.size() << " upreferences active!\n";
1215 // If we find any resolvable upreferences (i.e., those whose NestingLevel goes
1216 // to zero), we resolve them all together before we resolve them to Ty. At
1217 // the end of the loop, if there is anything to resolve to Ty, it will be in
1219 OpaqueType *TypeToResolve = 0;
1221 for (unsigned i = 0; i != UpRefs.size(); ++i) {
1222 // Determine if 'Ty' directly contains this up-references 'LastContainedTy'.
1224 std::find(Ty->subtype_begin(), Ty->subtype_end(),
1225 UpRefs[i].LastContainedTy) != Ty->subtype_end();
1228 dbgs() << " UR#" << i << " - TypeContains(" << Ty->getDescription() << ", "
1229 << UpRefs[i].LastContainedTy->getDescription() << ") = "
1230 << (ContainsType ? "true" : "false")
1231 << " level=" << UpRefs[i].NestingLevel << "\n";
1236 // Decrement level of upreference
1237 unsigned Level = --UpRefs[i].NestingLevel;
1238 UpRefs[i].LastContainedTy = Ty;
1240 // If the Up-reference has a non-zero level, it shouldn't be resolved yet.
1245 dbgs() << " * Resolving upreference for " << UpRefs[i].UpRefTy << "\n";
1248 TypeToResolve = UpRefs[i].UpRefTy;
1250 UpRefs[i].UpRefTy->refineAbstractTypeTo(TypeToResolve);
1251 UpRefs.erase(UpRefs.begin()+i); // Remove from upreference list.
1252 --i; // Do not skip the next element.
1256 TypeToResolve->refineAbstractTypeTo(Ty);
1262 /// ParseTypeRec - The recursive function used to process the internal
1263 /// implementation details of types.
1264 bool LLParser::ParseTypeRec(PATypeHolder &Result) {
1265 switch (Lex.getKind()) {
1267 return TokError("expected type");
1269 // TypeRec ::= 'float' | 'void' (etc)
1270 Result = Lex.getTyVal();
1273 case lltok::kw_opaque:
1274 // TypeRec ::= 'opaque'
1275 Result = OpaqueType::get(Context);
1279 // TypeRec ::= '{' ... '}'
1280 if (ParseStructType(Result, false))
1283 case lltok::lsquare:
1284 // TypeRec ::= '[' ... ']'
1285 Lex.Lex(); // eat the lsquare.
1286 if (ParseArrayVectorType(Result, false))
1289 case lltok::less: // Either vector or packed struct.
1290 // TypeRec ::= '<' ... '>'
1292 if (Lex.getKind() == lltok::lbrace) {
1293 if (ParseStructType(Result, true) ||
1294 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1296 } else if (ParseArrayVectorType(Result, true))
1299 case lltok::LocalVar:
1300 case lltok::StringConstant: // FIXME: REMOVE IN LLVM 3.0
1302 if (const Type *T = M->getTypeByName(Lex.getStrVal())) {
1305 Result = OpaqueType::get(Context);
1306 ForwardRefTypes.insert(std::make_pair(Lex.getStrVal(),
1307 std::make_pair(Result,
1309 M->addTypeName(Lex.getStrVal(), Result.get());
1314 case lltok::LocalVarID:
1316 if (Lex.getUIntVal() < NumberedTypes.size())
1317 Result = NumberedTypes[Lex.getUIntVal()];
1319 std::map<unsigned, std::pair<PATypeHolder, LocTy> >::iterator
1320 I = ForwardRefTypeIDs.find(Lex.getUIntVal());
1321 if (I != ForwardRefTypeIDs.end())
1322 Result = I->second.first;
1324 Result = OpaqueType::get(Context);
1325 ForwardRefTypeIDs.insert(std::make_pair(Lex.getUIntVal(),
1326 std::make_pair(Result,
1332 case lltok::backslash: {
1333 // TypeRec ::= '\' 4
1336 if (ParseUInt32(Val)) return true;
1337 OpaqueType *OT = OpaqueType::get(Context); //Use temporary placeholder.
1338 UpRefs.push_back(UpRefRecord(Lex.getLoc(), Val, OT));
1344 // Parse the type suffixes.
1346 switch (Lex.getKind()) {
1348 default: return false;
1350 // TypeRec ::= TypeRec '*'
1352 if (Result.get()->isLabelTy())
1353 return TokError("basic block pointers are invalid");
1354 if (Result.get()->isVoidTy())
1355 return TokError("pointers to void are invalid; use i8* instead");
1356 if (!PointerType::isValidElementType(Result.get()))
1357 return TokError("pointer to this type is invalid");
1358 Result = HandleUpRefs(PointerType::getUnqual(Result.get()));
1362 // TypeRec ::= TypeRec 'addrspace' '(' uint32 ')' '*'
1363 case lltok::kw_addrspace: {
1364 if (Result.get()->isLabelTy())
1365 return TokError("basic block pointers are invalid");
1366 if (Result.get()->isVoidTy())
1367 return TokError("pointers to void are invalid; use i8* instead");
1368 if (!PointerType::isValidElementType(Result.get()))
1369 return TokError("pointer to this type is invalid");
1371 if (ParseOptionalAddrSpace(AddrSpace) ||
1372 ParseToken(lltok::star, "expected '*' in address space"))
1375 Result = HandleUpRefs(PointerType::get(Result.get(), AddrSpace));
1379 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1381 if (ParseFunctionType(Result))
1388 /// ParseParameterList
1390 /// ::= '(' Arg (',' Arg)* ')'
1392 /// ::= Type OptionalAttributes Value OptionalAttributes
1393 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1394 PerFunctionState &PFS) {
1395 if (ParseToken(lltok::lparen, "expected '(' in call"))
1398 while (Lex.getKind() != lltok::rparen) {
1399 // If this isn't the first argument, we need a comma.
1400 if (!ArgList.empty() &&
1401 ParseToken(lltok::comma, "expected ',' in argument list"))
1404 // Parse the argument.
1406 PATypeHolder ArgTy(Type::getVoidTy(Context));
1407 unsigned ArgAttrs1 = Attribute::None;
1408 unsigned ArgAttrs2 = Attribute::None;
1410 if (ParseType(ArgTy, ArgLoc))
1413 if (Lex.getKind() == lltok::Metadata) {
1414 if (ParseInlineMetadata(V, PFS))
1417 if (ParseOptionalAttrs(ArgAttrs1, 0) ||
1418 ParseValue(ArgTy, V, PFS) ||
1419 // FIXME: Should not allow attributes after the argument, remove this
1421 ParseOptionalAttrs(ArgAttrs2, 3))
1424 ArgList.push_back(ParamInfo(ArgLoc, V, ArgAttrs1|ArgAttrs2));
1427 Lex.Lex(); // Lex the ')'.
1433 /// ParseArgumentList - Parse the argument list for a function type or function
1434 /// prototype. If 'inType' is true then we are parsing a FunctionType.
1435 /// ::= '(' ArgTypeListI ')'
1439 /// ::= ArgTypeList ',' '...'
1440 /// ::= ArgType (',' ArgType)*
1442 bool LLParser::ParseArgumentList(std::vector<ArgInfo> &ArgList,
1443 bool &isVarArg, bool inType) {
1445 assert(Lex.getKind() == lltok::lparen);
1446 Lex.Lex(); // eat the (.
1448 if (Lex.getKind() == lltok::rparen) {
1450 } else if (Lex.getKind() == lltok::dotdotdot) {
1454 LocTy TypeLoc = Lex.getLoc();
1455 PATypeHolder ArgTy(Type::getVoidTy(Context));
1459 // If we're parsing a type, use ParseTypeRec, because we allow recursive
1460 // types (such as a function returning a pointer to itself). If parsing a
1461 // function prototype, we require fully resolved types.
1462 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1463 ParseOptionalAttrs(Attrs, 0)) return true;
1465 if (ArgTy->isVoidTy())
1466 return Error(TypeLoc, "argument can not have void type");
1468 if (Lex.getKind() == lltok::LocalVar ||
1469 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1470 Name = Lex.getStrVal();
1474 if (!FunctionType::isValidArgumentType(ArgTy))
1475 return Error(TypeLoc, "invalid type for function argument");
1477 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1479 while (EatIfPresent(lltok::comma)) {
1480 // Handle ... at end of arg list.
1481 if (EatIfPresent(lltok::dotdotdot)) {
1486 // Otherwise must be an argument type.
1487 TypeLoc = Lex.getLoc();
1488 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1489 ParseOptionalAttrs(Attrs, 0)) return true;
1491 if (ArgTy->isVoidTy())
1492 return Error(TypeLoc, "argument can not have void type");
1494 if (Lex.getKind() == lltok::LocalVar ||
1495 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1496 Name = Lex.getStrVal();
1502 if (!ArgTy->isFirstClassType() && !isa<OpaqueType>(ArgTy))
1503 return Error(TypeLoc, "invalid type for function argument");
1505 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1509 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1512 /// ParseFunctionType
1513 /// ::= Type ArgumentList OptionalAttrs
1514 bool LLParser::ParseFunctionType(PATypeHolder &Result) {
1515 assert(Lex.getKind() == lltok::lparen);
1517 if (!FunctionType::isValidReturnType(Result))
1518 return TokError("invalid function return type");
1520 std::vector<ArgInfo> ArgList;
1523 if (ParseArgumentList(ArgList, isVarArg, true) ||
1524 // FIXME: Allow, but ignore attributes on function types!
1525 // FIXME: Remove in LLVM 3.0
1526 ParseOptionalAttrs(Attrs, 2))
1529 // Reject names on the arguments lists.
1530 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1531 if (!ArgList[i].Name.empty())
1532 return Error(ArgList[i].Loc, "argument name invalid in function type");
1533 if (!ArgList[i].Attrs != 0) {
1534 // Allow but ignore attributes on function types; this permits
1536 // FIXME: REJECT ATTRIBUTES ON FUNCTION TYPES in LLVM 3.0
1540 std::vector<const Type*> ArgListTy;
1541 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1542 ArgListTy.push_back(ArgList[i].Type);
1544 Result = HandleUpRefs(FunctionType::get(Result.get(),
1545 ArgListTy, isVarArg));
1549 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
1552 /// ::= '{' TypeRec (',' TypeRec)* '}'
1553 /// ::= '<' '{' '}' '>'
1554 /// ::= '<' '{' TypeRec (',' TypeRec)* '}' '>'
1555 bool LLParser::ParseStructType(PATypeHolder &Result, bool Packed) {
1556 assert(Lex.getKind() == lltok::lbrace);
1557 Lex.Lex(); // Consume the '{'
1559 if (EatIfPresent(lltok::rbrace)) {
1560 Result = StructType::get(Context, Packed);
1564 std::vector<PATypeHolder> ParamsList;
1565 LocTy EltTyLoc = Lex.getLoc();
1566 if (ParseTypeRec(Result)) return true;
1567 ParamsList.push_back(Result);
1569 if (Result->isVoidTy())
1570 return Error(EltTyLoc, "struct element can not have void type");
1571 if (!StructType::isValidElementType(Result))
1572 return Error(EltTyLoc, "invalid element type for struct");
1574 while (EatIfPresent(lltok::comma)) {
1575 EltTyLoc = Lex.getLoc();
1576 if (ParseTypeRec(Result)) return true;
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 ParamsList.push_back(Result);
1586 if (ParseToken(lltok::rbrace, "expected '}' at end of struct"))
1589 std::vector<const Type*> ParamsListTy;
1590 for (unsigned i = 0, e = ParamsList.size(); i != e; ++i)
1591 ParamsListTy.push_back(ParamsList[i].get());
1592 Result = HandleUpRefs(StructType::get(Context, ParamsListTy, Packed));
1596 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
1597 /// token has already been consumed.
1599 /// ::= '[' APSINTVAL 'x' Types ']'
1600 /// ::= '<' APSINTVAL 'x' Types '>'
1601 bool LLParser::ParseArrayVectorType(PATypeHolder &Result, bool isVector) {
1602 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
1603 Lex.getAPSIntVal().getBitWidth() > 64)
1604 return TokError("expected number in address space");
1606 LocTy SizeLoc = Lex.getLoc();
1607 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
1610 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
1613 LocTy TypeLoc = Lex.getLoc();
1614 PATypeHolder EltTy(Type::getVoidTy(Context));
1615 if (ParseTypeRec(EltTy)) return true;
1617 if (EltTy->isVoidTy())
1618 return Error(TypeLoc, "array and vector element type cannot be void");
1620 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
1621 "expected end of sequential type"))
1626 return Error(SizeLoc, "zero element vector is illegal");
1627 if ((unsigned)Size != Size)
1628 return Error(SizeLoc, "size too large for vector");
1629 if (!VectorType::isValidElementType(EltTy))
1630 return Error(TypeLoc, "vector element type must be fp or integer");
1631 Result = VectorType::get(EltTy, unsigned(Size));
1633 if (!ArrayType::isValidElementType(EltTy))
1634 return Error(TypeLoc, "invalid array element type");
1635 Result = HandleUpRefs(ArrayType::get(EltTy, Size));
1640 //===----------------------------------------------------------------------===//
1641 // Function Semantic Analysis.
1642 //===----------------------------------------------------------------------===//
1644 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
1646 : P(p), F(f), FunctionNumber(functionNumber) {
1648 // Insert unnamed arguments into the NumberedVals list.
1649 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
1652 NumberedVals.push_back(AI);
1655 LLParser::PerFunctionState::~PerFunctionState() {
1656 // If there were any forward referenced non-basicblock values, delete them.
1657 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
1658 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
1659 if (!isa<BasicBlock>(I->second.first)) {
1660 I->second.first->replaceAllUsesWith(
1661 UndefValue::get(I->second.first->getType()));
1662 delete I->second.first;
1663 I->second.first = 0;
1666 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1667 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.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;
1676 bool LLParser::PerFunctionState::FinishFunction() {
1677 // Check to see if someone took the address of labels in this block.
1678 if (!P.ForwardRefBlockAddresses.empty()) {
1680 if (!F.getName().empty()) {
1681 FunctionID.Kind = ValID::t_GlobalName;
1682 FunctionID.StrVal = F.getName();
1684 FunctionID.Kind = ValID::t_GlobalID;
1685 FunctionID.UIntVal = FunctionNumber;
1688 std::map<ValID, std::vector<std::pair<ValID, GlobalValue*> > >::iterator
1689 FRBAI = P.ForwardRefBlockAddresses.find(FunctionID);
1690 if (FRBAI != P.ForwardRefBlockAddresses.end()) {
1691 // Resolve all these references.
1692 if (P.ResolveForwardRefBlockAddresses(&F, FRBAI->second, this))
1695 P.ForwardRefBlockAddresses.erase(FRBAI);
1699 if (!ForwardRefVals.empty())
1700 return P.Error(ForwardRefVals.begin()->second.second,
1701 "use of undefined value '%" + ForwardRefVals.begin()->first +
1703 if (!ForwardRefValIDs.empty())
1704 return P.Error(ForwardRefValIDs.begin()->second.second,
1705 "use of undefined value '%" +
1706 utostr(ForwardRefValIDs.begin()->first) + "'");
1711 /// GetVal - Get a value with the specified name or ID, creating a
1712 /// forward reference record if needed. This can return null if the value
1713 /// exists but does not have the right type.
1714 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
1715 const Type *Ty, LocTy Loc) {
1716 // Look this name up in the normal function symbol table.
1717 Value *Val = F.getValueSymbolTable().lookup(Name);
1719 // If this is a forward reference for the value, see if we already created a
1720 // forward ref record.
1722 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1723 I = ForwardRefVals.find(Name);
1724 if (I != ForwardRefVals.end())
1725 Val = I->second.first;
1728 // If we have the value in the symbol table or fwd-ref table, return it.
1730 if (Val->getType() == Ty) return Val;
1731 if (Ty->isLabelTy())
1732 P.Error(Loc, "'%" + Name + "' is not a basic block");
1734 P.Error(Loc, "'%" + Name + "' defined with type '" +
1735 Val->getType()->getDescription() + "'");
1739 // Don't make placeholders with invalid type.
1740 if (!Ty->isFirstClassType() && !isa<OpaqueType>(Ty) &&
1741 Ty != Type::getLabelTy(F.getContext())) {
1742 P.Error(Loc, "invalid use of a non-first-class type");
1746 // Otherwise, create a new forward reference for this value and remember it.
1748 if (Ty->isLabelTy())
1749 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
1751 FwdVal = new Argument(Ty, Name);
1753 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1757 Value *LLParser::PerFunctionState::GetVal(unsigned ID, const Type *Ty,
1759 // Look this name up in the normal function symbol table.
1760 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
1762 // If this is a forward reference for the value, see if we already created a
1763 // forward ref record.
1765 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1766 I = ForwardRefValIDs.find(ID);
1767 if (I != ForwardRefValIDs.end())
1768 Val = I->second.first;
1771 // If we have the value in the symbol table or fwd-ref table, return it.
1773 if (Val->getType() == Ty) return Val;
1774 if (Ty->isLabelTy())
1775 P.Error(Loc, "'%" + utostr(ID) + "' is not a basic block");
1777 P.Error(Loc, "'%" + utostr(ID) + "' defined with type '" +
1778 Val->getType()->getDescription() + "'");
1782 if (!Ty->isFirstClassType() && !isa<OpaqueType>(Ty) &&
1783 Ty != Type::getLabelTy(F.getContext())) {
1784 P.Error(Loc, "invalid use of a non-first-class type");
1788 // Otherwise, create a new forward reference for this value and remember it.
1790 if (Ty->isLabelTy())
1791 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
1793 FwdVal = new Argument(Ty);
1795 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1799 /// SetInstName - After an instruction is parsed and inserted into its
1800 /// basic block, this installs its name.
1801 bool LLParser::PerFunctionState::SetInstName(int NameID,
1802 const std::string &NameStr,
1803 LocTy NameLoc, Instruction *Inst) {
1804 // If this instruction has void type, it cannot have a name or ID specified.
1805 if (Inst->getType()->isVoidTy()) {
1806 if (NameID != -1 || !NameStr.empty())
1807 return P.Error(NameLoc, "instructions returning void cannot have a name");
1811 // If this was a numbered instruction, verify that the instruction is the
1812 // expected value and resolve any forward references.
1813 if (NameStr.empty()) {
1814 // If neither a name nor an ID was specified, just use the next ID.
1816 NameID = NumberedVals.size();
1818 if (unsigned(NameID) != NumberedVals.size())
1819 return P.Error(NameLoc, "instruction expected to be numbered '%" +
1820 utostr(NumberedVals.size()) + "'");
1822 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
1823 ForwardRefValIDs.find(NameID);
1824 if (FI != ForwardRefValIDs.end()) {
1825 if (FI->second.first->getType() != Inst->getType())
1826 return P.Error(NameLoc, "instruction forward referenced with type '" +
1827 FI->second.first->getType()->getDescription() + "'");
1828 FI->second.first->replaceAllUsesWith(Inst);
1829 delete FI->second.first;
1830 ForwardRefValIDs.erase(FI);
1833 NumberedVals.push_back(Inst);
1837 // Otherwise, the instruction had a name. Resolve forward refs and set it.
1838 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1839 FI = ForwardRefVals.find(NameStr);
1840 if (FI != ForwardRefVals.end()) {
1841 if (FI->second.first->getType() != Inst->getType())
1842 return P.Error(NameLoc, "instruction forward referenced with type '" +
1843 FI->second.first->getType()->getDescription() + "'");
1844 FI->second.first->replaceAllUsesWith(Inst);
1845 delete FI->second.first;
1846 ForwardRefVals.erase(FI);
1849 // Set the name on the instruction.
1850 Inst->setName(NameStr);
1852 if (Inst->getNameStr() != NameStr)
1853 return P.Error(NameLoc, "multiple definition of local value named '" +
1858 /// GetBB - Get a basic block with the specified name or ID, creating a
1859 /// forward reference record if needed.
1860 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
1862 return cast_or_null<BasicBlock>(GetVal(Name,
1863 Type::getLabelTy(F.getContext()), Loc));
1866 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
1867 return cast_or_null<BasicBlock>(GetVal(ID,
1868 Type::getLabelTy(F.getContext()), Loc));
1871 /// DefineBB - Define the specified basic block, which is either named or
1872 /// unnamed. If there is an error, this returns null otherwise it returns
1873 /// the block being defined.
1874 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
1878 BB = GetBB(NumberedVals.size(), Loc);
1880 BB = GetBB(Name, Loc);
1881 if (BB == 0) return 0; // Already diagnosed error.
1883 // Move the block to the end of the function. Forward ref'd blocks are
1884 // inserted wherever they happen to be referenced.
1885 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
1887 // Remove the block from forward ref sets.
1889 ForwardRefValIDs.erase(NumberedVals.size());
1890 NumberedVals.push_back(BB);
1892 // BB forward references are already in the function symbol table.
1893 ForwardRefVals.erase(Name);
1899 //===----------------------------------------------------------------------===//
1901 //===----------------------------------------------------------------------===//
1903 /// ParseValID - Parse an abstract value that doesn't necessarily have a
1904 /// type implied. For example, if we parse "4" we don't know what integer type
1905 /// it has. The value will later be combined with its type and checked for
1907 bool LLParser::ParseValID(ValID &ID) {
1908 ID.Loc = Lex.getLoc();
1909 switch (Lex.getKind()) {
1910 default: return TokError("expected value token");
1911 case lltok::GlobalID: // @42
1912 ID.UIntVal = Lex.getUIntVal();
1913 ID.Kind = ValID::t_GlobalID;
1915 case lltok::GlobalVar: // @foo
1916 ID.StrVal = Lex.getStrVal();
1917 ID.Kind = ValID::t_GlobalName;
1919 case lltok::LocalVarID: // %42
1920 ID.UIntVal = Lex.getUIntVal();
1921 ID.Kind = ValID::t_LocalID;
1923 case lltok::LocalVar: // %foo
1924 case lltok::StringConstant: // "foo" - FIXME: REMOVE IN LLVM 3.0
1925 ID.StrVal = Lex.getStrVal();
1926 ID.Kind = ValID::t_LocalName;
1928 case lltok::Metadata: { // !{...} MDNode, !"foo" MDString
1929 ID.Kind = ValID::t_Metadata;
1931 if (Lex.getKind() == lltok::lbrace) {
1932 SmallVector<Value*, 16> Elts;
1933 if (ParseMDNodeVector(Elts) ||
1934 ParseToken(lltok::rbrace, "expected end of metadata node"))
1937 ID.MetadataVal = MDNode::get(Context, Elts.data(), Elts.size());
1941 // Standalone metadata reference
1942 // !{ ..., !42, ... }
1943 if (!ParseMDNode(ID.MetadataVal))
1947 // ::= '!' STRINGCONSTANT
1948 if (ParseMDString(ID.MetadataVal)) return true;
1949 ID.Kind = ValID::t_Metadata;
1953 ID.APSIntVal = Lex.getAPSIntVal();
1954 ID.Kind = ValID::t_APSInt;
1956 case lltok::APFloat:
1957 ID.APFloatVal = Lex.getAPFloatVal();
1958 ID.Kind = ValID::t_APFloat;
1960 case lltok::kw_true:
1961 ID.ConstantVal = ConstantInt::getTrue(Context);
1962 ID.Kind = ValID::t_Constant;
1964 case lltok::kw_false:
1965 ID.ConstantVal = ConstantInt::getFalse(Context);
1966 ID.Kind = ValID::t_Constant;
1968 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
1969 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
1970 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
1972 case lltok::lbrace: {
1973 // ValID ::= '{' ConstVector '}'
1975 SmallVector<Constant*, 16> Elts;
1976 if (ParseGlobalValueVector(Elts) ||
1977 ParseToken(lltok::rbrace, "expected end of struct constant"))
1980 ID.ConstantVal = ConstantStruct::get(Context, Elts.data(),
1981 Elts.size(), false);
1982 ID.Kind = ValID::t_Constant;
1986 // ValID ::= '<' ConstVector '>' --> Vector.
1987 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
1989 bool isPackedStruct = EatIfPresent(lltok::lbrace);
1991 SmallVector<Constant*, 16> Elts;
1992 LocTy FirstEltLoc = Lex.getLoc();
1993 if (ParseGlobalValueVector(Elts) ||
1995 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
1996 ParseToken(lltok::greater, "expected end of constant"))
1999 if (isPackedStruct) {
2001 ConstantStruct::get(Context, Elts.data(), Elts.size(), true);
2002 ID.Kind = ValID::t_Constant;
2007 return Error(ID.Loc, "constant vector must not be empty");
2009 if (!Elts[0]->getType()->isInteger() &&
2010 !Elts[0]->getType()->isFloatingPoint())
2011 return Error(FirstEltLoc,
2012 "vector elements must have integer or floating point type");
2014 // Verify that all the vector elements have the same type.
2015 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2016 if (Elts[i]->getType() != Elts[0]->getType())
2017 return Error(FirstEltLoc,
2018 "vector element #" + utostr(i) +
2019 " is not of type '" + Elts[0]->getType()->getDescription());
2021 ID.ConstantVal = ConstantVector::get(Elts.data(), Elts.size());
2022 ID.Kind = ValID::t_Constant;
2025 case lltok::lsquare: { // Array Constant
2027 SmallVector<Constant*, 16> Elts;
2028 LocTy FirstEltLoc = Lex.getLoc();
2029 if (ParseGlobalValueVector(Elts) ||
2030 ParseToken(lltok::rsquare, "expected end of array constant"))
2033 // Handle empty element.
2035 // Use undef instead of an array because it's inconvenient to determine
2036 // the element type at this point, there being no elements to examine.
2037 ID.Kind = ValID::t_EmptyArray;
2041 if (!Elts[0]->getType()->isFirstClassType())
2042 return Error(FirstEltLoc, "invalid array element type: " +
2043 Elts[0]->getType()->getDescription());
2045 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2047 // Verify all elements are correct type!
2048 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2049 if (Elts[i]->getType() != Elts[0]->getType())
2050 return Error(FirstEltLoc,
2051 "array element #" + utostr(i) +
2052 " is not of type '" +Elts[0]->getType()->getDescription());
2055 ID.ConstantVal = ConstantArray::get(ATy, Elts.data(), Elts.size());
2056 ID.Kind = ValID::t_Constant;
2059 case lltok::kw_c: // c "foo"
2061 ID.ConstantVal = ConstantArray::get(Context, Lex.getStrVal(), false);
2062 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2063 ID.Kind = ValID::t_Constant;
2066 case lltok::kw_asm: {
2067 // ValID ::= 'asm' SideEffect? AlignStack? STRINGCONSTANT ',' STRINGCONSTANT
2068 bool HasSideEffect, AlignStack;
2070 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2071 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2072 ParseStringConstant(ID.StrVal) ||
2073 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2074 ParseToken(lltok::StringConstant, "expected constraint string"))
2076 ID.StrVal2 = Lex.getStrVal();
2077 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1);
2078 ID.Kind = ValID::t_InlineAsm;
2082 case lltok::kw_blockaddress: {
2083 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2087 LocTy FnLoc, LabelLoc;
2089 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2091 ParseToken(lltok::comma, "expected comma in block address expression")||
2092 ParseValID(Label) ||
2093 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2096 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2097 return Error(Fn.Loc, "expected function name in blockaddress");
2098 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2099 return Error(Label.Loc, "expected basic block name in blockaddress");
2101 // Make a global variable as a placeholder for this reference.
2102 GlobalVariable *FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context),
2103 false, GlobalValue::InternalLinkage,
2105 ForwardRefBlockAddresses[Fn].push_back(std::make_pair(Label, FwdRef));
2106 ID.ConstantVal = FwdRef;
2107 ID.Kind = ValID::t_Constant;
2111 case lltok::kw_trunc:
2112 case lltok::kw_zext:
2113 case lltok::kw_sext:
2114 case lltok::kw_fptrunc:
2115 case lltok::kw_fpext:
2116 case lltok::kw_bitcast:
2117 case lltok::kw_uitofp:
2118 case lltok::kw_sitofp:
2119 case lltok::kw_fptoui:
2120 case lltok::kw_fptosi:
2121 case lltok::kw_inttoptr:
2122 case lltok::kw_ptrtoint: {
2123 unsigned Opc = Lex.getUIntVal();
2124 PATypeHolder DestTy(Type::getVoidTy(Context));
2127 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2128 ParseGlobalTypeAndValue(SrcVal) ||
2129 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2130 ParseType(DestTy) ||
2131 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2133 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2134 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2135 SrcVal->getType()->getDescription() + "' to '" +
2136 DestTy->getDescription() + "'");
2137 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2139 ID.Kind = ValID::t_Constant;
2142 case lltok::kw_extractvalue: {
2145 SmallVector<unsigned, 4> Indices;
2146 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2147 ParseGlobalTypeAndValue(Val) ||
2148 ParseIndexList(Indices) ||
2149 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2151 if (Lex.getKind() == lltok::NamedOrCustomMD)
2152 if (ParseOptionalCustomMetadata()) return true;
2154 if (!isa<StructType>(Val->getType()) && !isa<ArrayType>(Val->getType()))
2155 return Error(ID.Loc, "extractvalue operand must be array or struct");
2156 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
2158 return Error(ID.Loc, "invalid indices for extractvalue");
2160 ConstantExpr::getExtractValue(Val, Indices.data(), Indices.size());
2161 ID.Kind = ValID::t_Constant;
2164 case lltok::kw_insertvalue: {
2166 Constant *Val0, *Val1;
2167 SmallVector<unsigned, 4> Indices;
2168 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2169 ParseGlobalTypeAndValue(Val0) ||
2170 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2171 ParseGlobalTypeAndValue(Val1) ||
2172 ParseIndexList(Indices) ||
2173 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2175 if (Lex.getKind() == lltok::NamedOrCustomMD)
2176 if (ParseOptionalCustomMetadata()) return true;
2177 if (!isa<StructType>(Val0->getType()) && !isa<ArrayType>(Val0->getType()))
2178 return Error(ID.Loc, "extractvalue operand must be array or struct");
2179 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
2181 return Error(ID.Loc, "invalid indices for insertvalue");
2182 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1,
2183 Indices.data(), Indices.size());
2184 ID.Kind = ValID::t_Constant;
2187 case lltok::kw_icmp:
2188 case lltok::kw_fcmp: {
2189 unsigned PredVal, Opc = Lex.getUIntVal();
2190 Constant *Val0, *Val1;
2192 if (ParseCmpPredicate(PredVal, Opc) ||
2193 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2194 ParseGlobalTypeAndValue(Val0) ||
2195 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2196 ParseGlobalTypeAndValue(Val1) ||
2197 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2200 if (Val0->getType() != Val1->getType())
2201 return Error(ID.Loc, "compare operands must have the same type");
2203 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2205 if (Opc == Instruction::FCmp) {
2206 if (!Val0->getType()->isFPOrFPVector())
2207 return Error(ID.Loc, "fcmp requires floating point operands");
2208 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2210 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2211 if (!Val0->getType()->isIntOrIntVector() &&
2212 !isa<PointerType>(Val0->getType()))
2213 return Error(ID.Loc, "icmp requires pointer or integer operands");
2214 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2216 ID.Kind = ValID::t_Constant;
2220 // Binary Operators.
2222 case lltok::kw_fadd:
2224 case lltok::kw_fsub:
2226 case lltok::kw_fmul:
2227 case lltok::kw_udiv:
2228 case lltok::kw_sdiv:
2229 case lltok::kw_fdiv:
2230 case lltok::kw_urem:
2231 case lltok::kw_srem:
2232 case lltok::kw_frem: {
2236 unsigned Opc = Lex.getUIntVal();
2237 Constant *Val0, *Val1;
2239 LocTy ModifierLoc = Lex.getLoc();
2240 if (Opc == Instruction::Add ||
2241 Opc == Instruction::Sub ||
2242 Opc == Instruction::Mul) {
2243 if (EatIfPresent(lltok::kw_nuw))
2245 if (EatIfPresent(lltok::kw_nsw)) {
2247 if (EatIfPresent(lltok::kw_nuw))
2250 } else if (Opc == Instruction::SDiv) {
2251 if (EatIfPresent(lltok::kw_exact))
2254 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2255 ParseGlobalTypeAndValue(Val0) ||
2256 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2257 ParseGlobalTypeAndValue(Val1) ||
2258 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2260 if (Val0->getType() != Val1->getType())
2261 return Error(ID.Loc, "operands of constexpr must have same type");
2262 if (!Val0->getType()->isIntOrIntVector()) {
2264 return Error(ModifierLoc, "nuw only applies to integer operations");
2266 return Error(ModifierLoc, "nsw only applies to integer operations");
2268 // API compatibility: Accept either integer or floating-point types with
2269 // add, sub, and mul.
2270 if (!Val0->getType()->isIntOrIntVector() &&
2271 !Val0->getType()->isFPOrFPVector())
2272 return Error(ID.Loc,"constexpr requires integer, fp, or vector operands");
2274 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2275 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2276 if (Exact) Flags |= SDivOperator::IsExact;
2277 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2279 ID.Kind = ValID::t_Constant;
2283 // Logical Operations
2285 case lltok::kw_lshr:
2286 case lltok::kw_ashr:
2289 case lltok::kw_xor: {
2290 unsigned Opc = Lex.getUIntVal();
2291 Constant *Val0, *Val1;
2293 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2294 ParseGlobalTypeAndValue(Val0) ||
2295 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2296 ParseGlobalTypeAndValue(Val1) ||
2297 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2299 if (Val0->getType() != Val1->getType())
2300 return Error(ID.Loc, "operands of constexpr must have same type");
2301 if (!Val0->getType()->isIntOrIntVector())
2302 return Error(ID.Loc,
2303 "constexpr requires integer or integer vector operands");
2304 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2305 ID.Kind = ValID::t_Constant;
2309 case lltok::kw_getelementptr:
2310 case lltok::kw_shufflevector:
2311 case lltok::kw_insertelement:
2312 case lltok::kw_extractelement:
2313 case lltok::kw_select: {
2314 unsigned Opc = Lex.getUIntVal();
2315 SmallVector<Constant*, 16> Elts;
2316 bool InBounds = false;
2318 if (Opc == Instruction::GetElementPtr)
2319 InBounds = EatIfPresent(lltok::kw_inbounds);
2320 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2321 ParseGlobalValueVector(Elts) ||
2322 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2325 if (Opc == Instruction::GetElementPtr) {
2326 if (Elts.size() == 0 || !isa<PointerType>(Elts[0]->getType()))
2327 return Error(ID.Loc, "getelementptr requires pointer operand");
2329 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(),
2330 (Value**)(Elts.data() + 1),
2332 return Error(ID.Loc, "invalid indices for getelementptr");
2333 ID.ConstantVal = InBounds ?
2334 ConstantExpr::getInBoundsGetElementPtr(Elts[0],
2337 ConstantExpr::getGetElementPtr(Elts[0],
2338 Elts.data() + 1, Elts.size() - 1);
2339 } else if (Opc == Instruction::Select) {
2340 if (Elts.size() != 3)
2341 return Error(ID.Loc, "expected three operands to select");
2342 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2344 return Error(ID.Loc, Reason);
2345 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2346 } else if (Opc == Instruction::ShuffleVector) {
2347 if (Elts.size() != 3)
2348 return Error(ID.Loc, "expected three operands to shufflevector");
2349 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2350 return Error(ID.Loc, "invalid operands to shufflevector");
2352 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2353 } else if (Opc == Instruction::ExtractElement) {
2354 if (Elts.size() != 2)
2355 return Error(ID.Loc, "expected two operands to extractelement");
2356 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2357 return Error(ID.Loc, "invalid extractelement operands");
2358 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2360 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2361 if (Elts.size() != 3)
2362 return Error(ID.Loc, "expected three operands to insertelement");
2363 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2364 return Error(ID.Loc, "invalid insertelement operands");
2366 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2369 ID.Kind = ValID::t_Constant;
2378 /// ParseGlobalValue - Parse a global value with the specified type.
2379 bool LLParser::ParseGlobalValue(const Type *Ty, Constant *&V) {
2382 return ParseValID(ID) ||
2383 ConvertGlobalValIDToValue(Ty, ID, V);
2386 /// ConvertGlobalValIDToValue - Apply a type to a ValID to get a fully resolved
2388 bool LLParser::ConvertGlobalValIDToValue(const Type *Ty, ValID &ID,
2390 if (isa<FunctionType>(Ty))
2391 return Error(ID.Loc, "functions are not values, refer to them as pointers");
2394 default: llvm_unreachable("Unknown ValID!");
2395 case ValID::t_Metadata:
2396 return Error(ID.Loc, "invalid use of metadata");
2397 case ValID::t_LocalID:
2398 case ValID::t_LocalName:
2399 return Error(ID.Loc, "invalid use of function-local name");
2400 case ValID::t_InlineAsm:
2401 return Error(ID.Loc, "inline asm can only be an operand of call/invoke");
2402 case ValID::t_GlobalName:
2403 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
2405 case ValID::t_GlobalID:
2406 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
2408 case ValID::t_APSInt:
2409 if (!isa<IntegerType>(Ty))
2410 return Error(ID.Loc, "integer constant must have integer type");
2411 ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
2412 V = ConstantInt::get(Context, ID.APSIntVal);
2414 case ValID::t_APFloat:
2415 if (!Ty->isFloatingPoint() ||
2416 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
2417 return Error(ID.Loc, "floating point constant invalid for type");
2419 // The lexer has no type info, so builds all float and double FP constants
2420 // as double. Fix this here. Long double does not need this.
2421 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble &&
2424 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
2427 V = ConstantFP::get(Context, ID.APFloatVal);
2429 if (V->getType() != Ty)
2430 return Error(ID.Loc, "floating point constant does not have type '" +
2431 Ty->getDescription() + "'");
2435 if (!isa<PointerType>(Ty))
2436 return Error(ID.Loc, "null must be a pointer type");
2437 V = ConstantPointerNull::get(cast<PointerType>(Ty));
2439 case ValID::t_Undef:
2440 // FIXME: LabelTy should not be a first-class type.
2441 if ((!Ty->isFirstClassType() || Ty->isLabelTy()) &&
2442 !isa<OpaqueType>(Ty))
2443 return Error(ID.Loc, "invalid type for undef constant");
2444 V = UndefValue::get(Ty);
2446 case ValID::t_EmptyArray:
2447 if (!isa<ArrayType>(Ty) || cast<ArrayType>(Ty)->getNumElements() != 0)
2448 return Error(ID.Loc, "invalid empty array initializer");
2449 V = UndefValue::get(Ty);
2452 // FIXME: LabelTy should not be a first-class type.
2453 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2454 return Error(ID.Loc, "invalid type for null constant");
2455 V = Constant::getNullValue(Ty);
2457 case ValID::t_Constant:
2458 if (ID.ConstantVal->getType() != Ty)
2459 return Error(ID.Loc, "constant expression type mismatch");
2465 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2466 PATypeHolder Type(Type::getVoidTy(Context));
2467 return ParseType(Type) ||
2468 ParseGlobalValue(Type, V);
2471 /// ParseGlobalValueVector
2473 /// ::= TypeAndValue (',' TypeAndValue)*
2474 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts) {
2476 if (Lex.getKind() == lltok::rbrace ||
2477 Lex.getKind() == lltok::rsquare ||
2478 Lex.getKind() == lltok::greater ||
2479 Lex.getKind() == lltok::rparen)
2483 if (ParseGlobalTypeAndValue(C)) return true;
2486 while (EatIfPresent(lltok::comma)) {
2487 if (ParseGlobalTypeAndValue(C)) return true;
2495 //===----------------------------------------------------------------------===//
2496 // Function Parsing.
2497 //===----------------------------------------------------------------------===//
2499 bool LLParser::ConvertValIDToValue(const Type *Ty, ValID &ID, Value *&V,
2500 PerFunctionState &PFS) {
2501 if (ID.Kind == ValID::t_LocalID)
2502 V = PFS.GetVal(ID.UIntVal, Ty, ID.Loc);
2503 else if (ID.Kind == ValID::t_LocalName)
2504 V = PFS.GetVal(ID.StrVal, Ty, ID.Loc);
2505 else if (ID.Kind == ValID::t_InlineAsm) {
2506 const PointerType *PTy = dyn_cast<PointerType>(Ty);
2507 const FunctionType *FTy =
2508 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
2509 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
2510 return Error(ID.Loc, "invalid type for inline asm constraint string");
2511 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1, ID.UIntVal>>1);
2513 } else if (ID.Kind == ValID::t_Metadata) {
2517 if (ConvertGlobalValIDToValue(Ty, ID, C)) return true;
2525 bool LLParser::ParseValue(const Type *Ty, Value *&V, PerFunctionState &PFS) {
2528 return ParseValID(ID) ||
2529 ConvertValIDToValue(Ty, ID, V, PFS);
2532 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState &PFS) {
2533 PATypeHolder T(Type::getVoidTy(Context));
2534 return ParseType(T) ||
2535 ParseValue(T, V, PFS);
2538 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
2539 PerFunctionState &PFS) {
2542 if (ParseTypeAndValue(V, PFS)) return true;
2543 if (!isa<BasicBlock>(V))
2544 return Error(Loc, "expected a basic block");
2545 BB = cast<BasicBlock>(V);
2551 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
2552 /// Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
2553 /// OptionalAlign OptGC
2554 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
2555 // Parse the linkage.
2556 LocTy LinkageLoc = Lex.getLoc();
2559 unsigned Visibility, RetAttrs;
2561 PATypeHolder RetType(Type::getVoidTy(Context));
2562 LocTy RetTypeLoc = Lex.getLoc();
2563 if (ParseOptionalLinkage(Linkage) ||
2564 ParseOptionalVisibility(Visibility) ||
2565 ParseOptionalCallingConv(CC) ||
2566 ParseOptionalAttrs(RetAttrs, 1) ||
2567 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
2570 // Verify that the linkage is ok.
2571 switch ((GlobalValue::LinkageTypes)Linkage) {
2572 case GlobalValue::ExternalLinkage:
2573 break; // always ok.
2574 case GlobalValue::DLLImportLinkage:
2575 case GlobalValue::ExternalWeakLinkage:
2577 return Error(LinkageLoc, "invalid linkage for function definition");
2579 case GlobalValue::PrivateLinkage:
2580 case GlobalValue::LinkerPrivateLinkage:
2581 case GlobalValue::InternalLinkage:
2582 case GlobalValue::AvailableExternallyLinkage:
2583 case GlobalValue::LinkOnceAnyLinkage:
2584 case GlobalValue::LinkOnceODRLinkage:
2585 case GlobalValue::WeakAnyLinkage:
2586 case GlobalValue::WeakODRLinkage:
2587 case GlobalValue::DLLExportLinkage:
2589 return Error(LinkageLoc, "invalid linkage for function declaration");
2591 case GlobalValue::AppendingLinkage:
2592 case GlobalValue::GhostLinkage:
2593 case GlobalValue::CommonLinkage:
2594 return Error(LinkageLoc, "invalid function linkage type");
2597 if (!FunctionType::isValidReturnType(RetType) ||
2598 isa<OpaqueType>(RetType))
2599 return Error(RetTypeLoc, "invalid function return type");
2601 LocTy NameLoc = Lex.getLoc();
2603 std::string FunctionName;
2604 if (Lex.getKind() == lltok::GlobalVar) {
2605 FunctionName = Lex.getStrVal();
2606 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
2607 unsigned NameID = Lex.getUIntVal();
2609 if (NameID != NumberedVals.size())
2610 return TokError("function expected to be numbered '%" +
2611 utostr(NumberedVals.size()) + "'");
2613 return TokError("expected function name");
2618 if (Lex.getKind() != lltok::lparen)
2619 return TokError("expected '(' in function argument list");
2621 std::vector<ArgInfo> ArgList;
2624 std::string Section;
2628 if (ParseArgumentList(ArgList, isVarArg, false) ||
2629 ParseOptionalAttrs(FuncAttrs, 2) ||
2630 (EatIfPresent(lltok::kw_section) &&
2631 ParseStringConstant(Section)) ||
2632 ParseOptionalAlignment(Alignment) ||
2633 (EatIfPresent(lltok::kw_gc) &&
2634 ParseStringConstant(GC)))
2637 // If the alignment was parsed as an attribute, move to the alignment field.
2638 if (FuncAttrs & Attribute::Alignment) {
2639 Alignment = Attribute::getAlignmentFromAttrs(FuncAttrs);
2640 FuncAttrs &= ~Attribute::Alignment;
2643 // Okay, if we got here, the function is syntactically valid. Convert types
2644 // and do semantic checks.
2645 std::vector<const Type*> ParamTypeList;
2646 SmallVector<AttributeWithIndex, 8> Attrs;
2647 // FIXME : In 3.0, stop accepting zext, sext and inreg as optional function
2649 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
2650 if (FuncAttrs & ObsoleteFuncAttrs) {
2651 RetAttrs |= FuncAttrs & ObsoleteFuncAttrs;
2652 FuncAttrs &= ~ObsoleteFuncAttrs;
2655 if (RetAttrs != Attribute::None)
2656 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
2658 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2659 ParamTypeList.push_back(ArgList[i].Type);
2660 if (ArgList[i].Attrs != Attribute::None)
2661 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
2664 if (FuncAttrs != Attribute::None)
2665 Attrs.push_back(AttributeWithIndex::get(~0, FuncAttrs));
2667 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
2669 if (PAL.paramHasAttr(1, Attribute::StructRet) &&
2670 RetType != Type::getVoidTy(Context))
2671 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
2673 const FunctionType *FT =
2674 FunctionType::get(RetType, ParamTypeList, isVarArg);
2675 const PointerType *PFT = PointerType::getUnqual(FT);
2678 if (!FunctionName.empty()) {
2679 // If this was a definition of a forward reference, remove the definition
2680 // from the forward reference table and fill in the forward ref.
2681 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
2682 ForwardRefVals.find(FunctionName);
2683 if (FRVI != ForwardRefVals.end()) {
2684 Fn = M->getFunction(FunctionName);
2685 ForwardRefVals.erase(FRVI);
2686 } else if ((Fn = M->getFunction(FunctionName))) {
2687 // If this function already exists in the symbol table, then it is
2688 // multiply defined. We accept a few cases for old backwards compat.
2689 // FIXME: Remove this stuff for LLVM 3.0.
2690 if (Fn->getType() != PFT || Fn->getAttributes() != PAL ||
2691 (!Fn->isDeclaration() && isDefine)) {
2692 // If the redefinition has different type or different attributes,
2693 // reject it. If both have bodies, reject it.
2694 return Error(NameLoc, "invalid redefinition of function '" +
2695 FunctionName + "'");
2696 } else if (Fn->isDeclaration()) {
2697 // Make sure to strip off any argument names so we can't get conflicts.
2698 for (Function::arg_iterator AI = Fn->arg_begin(), AE = Fn->arg_end();
2702 } else if (M->getNamedValue(FunctionName)) {
2703 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
2707 // If this is a definition of a forward referenced function, make sure the
2709 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
2710 = ForwardRefValIDs.find(NumberedVals.size());
2711 if (I != ForwardRefValIDs.end()) {
2712 Fn = cast<Function>(I->second.first);
2713 if (Fn->getType() != PFT)
2714 return Error(NameLoc, "type of definition and forward reference of '@" +
2715 utostr(NumberedVals.size()) +"' disagree");
2716 ForwardRefValIDs.erase(I);
2721 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
2722 else // Move the forward-reference to the correct spot in the module.
2723 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
2725 if (FunctionName.empty())
2726 NumberedVals.push_back(Fn);
2728 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
2729 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
2730 Fn->setCallingConv(CC);
2731 Fn->setAttributes(PAL);
2732 Fn->setAlignment(Alignment);
2733 Fn->setSection(Section);
2734 if (!GC.empty()) Fn->setGC(GC.c_str());
2736 // Add all of the arguments we parsed to the function.
2737 Function::arg_iterator ArgIt = Fn->arg_begin();
2738 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
2739 // If we run out of arguments in the Function prototype, exit early.
2740 // FIXME: REMOVE THIS IN LLVM 3.0, this is just for the mismatch case above.
2741 if (ArgIt == Fn->arg_end()) break;
2743 // If the argument has a name, insert it into the argument symbol table.
2744 if (ArgList[i].Name.empty()) continue;
2746 // Set the name, if it conflicted, it will be auto-renamed.
2747 ArgIt->setName(ArgList[i].Name);
2749 if (ArgIt->getNameStr() != ArgList[i].Name)
2750 return Error(ArgList[i].Loc, "redefinition of argument '%" +
2751 ArgList[i].Name + "'");
2758 /// ParseFunctionBody
2759 /// ::= '{' BasicBlock+ '}'
2760 /// ::= 'begin' BasicBlock+ 'end' // FIXME: remove in LLVM 3.0
2762 bool LLParser::ParseFunctionBody(Function &Fn) {
2763 if (Lex.getKind() != lltok::lbrace && Lex.getKind() != lltok::kw_begin)
2764 return TokError("expected '{' in function body");
2765 Lex.Lex(); // eat the {.
2767 int FunctionNumber = -1;
2768 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
2770 PerFunctionState PFS(*this, Fn, FunctionNumber);
2772 while (Lex.getKind() != lltok::rbrace && Lex.getKind() != lltok::kw_end)
2773 if (ParseBasicBlock(PFS)) return true;
2778 // Verify function is ok.
2779 return PFS.FinishFunction();
2783 /// ::= LabelStr? Instruction*
2784 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
2785 // If this basic block starts out with a name, remember it.
2787 LocTy NameLoc = Lex.getLoc();
2788 if (Lex.getKind() == lltok::LabelStr) {
2789 Name = Lex.getStrVal();
2793 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
2794 if (BB == 0) return true;
2796 std::string NameStr;
2798 // Parse the instructions in this block until we get a terminator.
2801 // This instruction may have three possibilities for a name: a) none
2802 // specified, b) name specified "%foo =", c) number specified: "%4 =".
2803 LocTy NameLoc = Lex.getLoc();
2807 if (Lex.getKind() == lltok::LocalVarID) {
2808 NameID = Lex.getUIntVal();
2810 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
2812 } else if (Lex.getKind() == lltok::LocalVar ||
2813 // FIXME: REMOVE IN LLVM 3.0
2814 Lex.getKind() == lltok::StringConstant) {
2815 NameStr = Lex.getStrVal();
2817 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
2821 if (ParseInstruction(Inst, BB, PFS)) return true;
2822 if (EatIfPresent(lltok::comma))
2823 ParseOptionalCustomMetadata();
2825 // Set metadata attached with this instruction.
2826 for (SmallVector<std::pair<unsigned, MDNode *>, 2>::iterator
2827 MDI = MDsOnInst.begin(), MDE = MDsOnInst.end(); MDI != MDE; ++MDI)
2828 Inst->setMetadata(MDI->first, MDI->second);
2831 BB->getInstList().push_back(Inst);
2833 // Set the name on the instruction.
2834 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
2835 } while (!isa<TerminatorInst>(Inst));
2840 //===----------------------------------------------------------------------===//
2841 // Instruction Parsing.
2842 //===----------------------------------------------------------------------===//
2844 /// ParseInstruction - Parse one of the many different instructions.
2846 bool LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
2847 PerFunctionState &PFS) {
2848 lltok::Kind Token = Lex.getKind();
2849 if (Token == lltok::Eof)
2850 return TokError("found end of file when expecting more instructions");
2851 LocTy Loc = Lex.getLoc();
2852 unsigned KeywordVal = Lex.getUIntVal();
2853 Lex.Lex(); // Eat the keyword.
2856 default: return Error(Loc, "expected instruction opcode");
2857 // Terminator Instructions.
2858 case lltok::kw_unwind: Inst = new UnwindInst(Context); return false;
2859 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
2860 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
2861 case lltok::kw_br: return ParseBr(Inst, PFS);
2862 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
2863 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
2864 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
2865 // Binary Operators.
2868 case lltok::kw_mul: {
2871 LocTy ModifierLoc = Lex.getLoc();
2872 if (EatIfPresent(lltok::kw_nuw))
2874 if (EatIfPresent(lltok::kw_nsw)) {
2876 if (EatIfPresent(lltok::kw_nuw))
2879 // API compatibility: Accept either integer or floating-point types.
2880 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 0);
2882 if (!Inst->getType()->isIntOrIntVector()) {
2884 return Error(ModifierLoc, "nuw only applies to integer operations");
2886 return Error(ModifierLoc, "nsw only applies to integer operations");
2889 cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
2891 cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
2895 case lltok::kw_fadd:
2896 case lltok::kw_fsub:
2897 case lltok::kw_fmul: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
2899 case lltok::kw_sdiv: {
2901 if (EatIfPresent(lltok::kw_exact))
2903 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 1);
2906 cast<BinaryOperator>(Inst)->setIsExact(true);
2910 case lltok::kw_udiv:
2911 case lltok::kw_urem:
2912 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
2913 case lltok::kw_fdiv:
2914 case lltok::kw_frem: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
2916 case lltok::kw_lshr:
2917 case lltok::kw_ashr:
2920 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
2921 case lltok::kw_icmp:
2922 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
2924 case lltok::kw_trunc:
2925 case lltok::kw_zext:
2926 case lltok::kw_sext:
2927 case lltok::kw_fptrunc:
2928 case lltok::kw_fpext:
2929 case lltok::kw_bitcast:
2930 case lltok::kw_uitofp:
2931 case lltok::kw_sitofp:
2932 case lltok::kw_fptoui:
2933 case lltok::kw_fptosi:
2934 case lltok::kw_inttoptr:
2935 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
2937 case lltok::kw_select: return ParseSelect(Inst, PFS);
2938 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
2939 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
2940 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
2941 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
2942 case lltok::kw_phi: return ParsePHI(Inst, PFS);
2943 case lltok::kw_call: return ParseCall(Inst, PFS, false);
2944 case lltok::kw_tail: return ParseCall(Inst, PFS, true);
2946 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
2947 case lltok::kw_malloc: return ParseAlloc(Inst, PFS, BB, false);
2948 case lltok::kw_free: return ParseFree(Inst, PFS, BB);
2949 case lltok::kw_load: return ParseLoad(Inst, PFS, false);
2950 case lltok::kw_store: return ParseStore(Inst, PFS, false);
2951 case lltok::kw_volatile:
2952 if (EatIfPresent(lltok::kw_load))
2953 return ParseLoad(Inst, PFS, true);
2954 else if (EatIfPresent(lltok::kw_store))
2955 return ParseStore(Inst, PFS, true);
2957 return TokError("expected 'load' or 'store'");
2958 case lltok::kw_getresult: return ParseGetResult(Inst, PFS);
2959 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
2960 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
2961 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
2965 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
2966 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
2967 if (Opc == Instruction::FCmp) {
2968 switch (Lex.getKind()) {
2969 default: TokError("expected fcmp predicate (e.g. 'oeq')");
2970 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
2971 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
2972 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
2973 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
2974 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
2975 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
2976 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
2977 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
2978 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
2979 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
2980 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
2981 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
2982 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
2983 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
2984 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
2985 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
2988 switch (Lex.getKind()) {
2989 default: TokError("expected icmp predicate (e.g. 'eq')");
2990 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
2991 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
2992 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
2993 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
2994 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
2995 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
2996 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
2997 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
2998 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
2999 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3006 //===----------------------------------------------------------------------===//
3007 // Terminator Instructions.
3008 //===----------------------------------------------------------------------===//
3010 /// ParseRet - Parse a return instruction.
3011 /// ::= 'ret' void (',' !dbg, !1)
3012 /// ::= 'ret' TypeAndValue (',' !dbg, !1)
3013 /// ::= 'ret' TypeAndValue (',' TypeAndValue)+ (',' !dbg, !1)
3014 /// [[obsolete: LLVM 3.0]]
3015 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3016 PerFunctionState &PFS) {
3017 PATypeHolder Ty(Type::getVoidTy(Context));
3018 if (ParseType(Ty, true /*void allowed*/)) return true;
3020 if (Ty->isVoidTy()) {
3021 Inst = ReturnInst::Create(Context);
3026 if (ParseValue(Ty, RV, PFS)) return true;
3028 if (EatIfPresent(lltok::comma)) {
3029 // Parse optional custom metadata, e.g. !dbg
3030 if (Lex.getKind() == lltok::NamedOrCustomMD) {
3031 if (ParseOptionalCustomMetadata()) return true;
3033 // The normal case is one return value.
3034 // FIXME: LLVM 3.0 remove MRV support for 'ret i32 1, i32 2', requiring use
3035 // of 'ret {i32,i32} {i32 1, i32 2}'
3036 SmallVector<Value*, 8> RVs;
3040 // If optional custom metadata, e.g. !dbg is seen then this is the
3042 if (Lex.getKind() == lltok::NamedOrCustomMD)
3044 if (ParseTypeAndValue(RV, PFS)) return true;
3046 } while (EatIfPresent(lltok::comma));
3048 RV = UndefValue::get(PFS.getFunction().getReturnType());
3049 for (unsigned i = 0, e = RVs.size(); i != e; ++i) {
3050 Instruction *I = InsertValueInst::Create(RV, RVs[i], i, "mrv");
3051 BB->getInstList().push_back(I);
3057 Inst = ReturnInst::Create(Context, RV);
3063 /// ::= 'br' TypeAndValue
3064 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3065 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
3068 BasicBlock *Op1, *Op2;
3069 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
3071 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
3072 Inst = BranchInst::Create(BB);
3076 if (Op0->getType() != Type::getInt1Ty(Context))
3077 return Error(Loc, "branch condition must have 'i1' type");
3079 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
3080 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
3081 ParseToken(lltok::comma, "expected ',' after true destination") ||
3082 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
3085 Inst = BranchInst::Create(Op1, Op2, Op0);
3091 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
3093 /// ::= (TypeAndValue ',' TypeAndValue)*
3094 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
3095 LocTy CondLoc, BBLoc;
3097 BasicBlock *DefaultBB;
3098 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
3099 ParseToken(lltok::comma, "expected ',' after switch condition") ||
3100 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
3101 ParseToken(lltok::lsquare, "expected '[' with switch table"))
3104 if (!isa<IntegerType>(Cond->getType()))
3105 return Error(CondLoc, "switch condition must have integer type");
3107 // Parse the jump table pairs.
3108 SmallPtrSet<Value*, 32> SeenCases;
3109 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
3110 while (Lex.getKind() != lltok::rsquare) {
3114 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
3115 ParseToken(lltok::comma, "expected ',' after case value") ||
3116 ParseTypeAndBasicBlock(DestBB, PFS))
3119 if (!SeenCases.insert(Constant))
3120 return Error(CondLoc, "duplicate case value in switch");
3121 if (!isa<ConstantInt>(Constant))
3122 return Error(CondLoc, "case value is not a constant integer");
3124 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
3127 Lex.Lex(); // Eat the ']'.
3129 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
3130 for (unsigned i = 0, e = Table.size(); i != e; ++i)
3131 SI->addCase(Table[i].first, Table[i].second);
3138 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
3139 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
3142 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
3143 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
3144 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
3147 if (!isa<PointerType>(Address->getType()))
3148 return Error(AddrLoc, "indirectbr address must have pointer type");
3150 // Parse the destination list.
3151 SmallVector<BasicBlock*, 16> DestList;
3153 if (Lex.getKind() != lltok::rsquare) {
3155 if (ParseTypeAndBasicBlock(DestBB, PFS))
3157 DestList.push_back(DestBB);
3159 while (EatIfPresent(lltok::comma)) {
3160 if (ParseTypeAndBasicBlock(DestBB, PFS))
3162 DestList.push_back(DestBB);
3166 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
3169 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
3170 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
3171 IBI->addDestination(DestList[i]);
3178 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3179 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3180 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3181 LocTy CallLoc = Lex.getLoc();
3182 unsigned RetAttrs, FnAttrs;
3184 PATypeHolder RetType(Type::getVoidTy(Context));
3187 SmallVector<ParamInfo, 16> ArgList;
3189 BasicBlock *NormalBB, *UnwindBB;
3190 if (ParseOptionalCallingConv(CC) ||
3191 ParseOptionalAttrs(RetAttrs, 1) ||
3192 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3193 ParseValID(CalleeID) ||
3194 ParseParameterList(ArgList, PFS) ||
3195 ParseOptionalAttrs(FnAttrs, 2) ||
3196 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3197 ParseTypeAndBasicBlock(NormalBB, PFS) ||
3198 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3199 ParseTypeAndBasicBlock(UnwindBB, PFS))
3202 // If RetType is a non-function pointer type, then this is the short syntax
3203 // for the call, which means that RetType is just the return type. Infer the
3204 // rest of the function argument types from the arguments that are present.
3205 const PointerType *PFTy = 0;
3206 const FunctionType *Ty = 0;
3207 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3208 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3209 // Pull out the types of all of the arguments...
3210 std::vector<const Type*> ParamTypes;
3211 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3212 ParamTypes.push_back(ArgList[i].V->getType());
3214 if (!FunctionType::isValidReturnType(RetType))
3215 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3217 Ty = FunctionType::get(RetType, ParamTypes, false);
3218 PFTy = PointerType::getUnqual(Ty);
3221 // Look up the callee.
3223 if (ConvertValIDToValue(PFTy, CalleeID, Callee, PFS)) return true;
3225 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
3226 // function attributes.
3227 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
3228 if (FnAttrs & ObsoleteFuncAttrs) {
3229 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
3230 FnAttrs &= ~ObsoleteFuncAttrs;
3233 // Set up the Attributes for the function.
3234 SmallVector<AttributeWithIndex, 8> Attrs;
3235 if (RetAttrs != Attribute::None)
3236 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3238 SmallVector<Value*, 8> Args;
3240 // Loop through FunctionType's arguments and ensure they are specified
3241 // correctly. Also, gather any parameter attributes.
3242 FunctionType::param_iterator I = Ty->param_begin();
3243 FunctionType::param_iterator E = Ty->param_end();
3244 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3245 const Type *ExpectedTy = 0;
3248 } else if (!Ty->isVarArg()) {
3249 return Error(ArgList[i].Loc, "too many arguments specified");
3252 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3253 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3254 ExpectedTy->getDescription() + "'");
3255 Args.push_back(ArgList[i].V);
3256 if (ArgList[i].Attrs != Attribute::None)
3257 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3261 return Error(CallLoc, "not enough parameters specified for call");
3263 if (FnAttrs != Attribute::None)
3264 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3266 // Finish off the Attributes and check them
3267 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3269 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB,
3270 Args.begin(), Args.end());
3271 II->setCallingConv(CC);
3272 II->setAttributes(PAL);
3279 //===----------------------------------------------------------------------===//
3280 // Binary Operators.
3281 //===----------------------------------------------------------------------===//
3284 /// ::= ArithmeticOps TypeAndValue ',' Value
3286 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3287 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3288 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3289 unsigned Opc, unsigned OperandType) {
3290 LocTy Loc; Value *LHS, *RHS;
3291 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3292 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3293 ParseValue(LHS->getType(), RHS, PFS))
3297 switch (OperandType) {
3298 default: llvm_unreachable("Unknown operand type!");
3299 case 0: // int or FP.
3300 Valid = LHS->getType()->isIntOrIntVector() ||
3301 LHS->getType()->isFPOrFPVector();
3303 case 1: Valid = LHS->getType()->isIntOrIntVector(); break;
3304 case 2: Valid = LHS->getType()->isFPOrFPVector(); break;
3308 return Error(Loc, "invalid operand type for instruction");
3310 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3315 /// ::= ArithmeticOps TypeAndValue ',' Value {
3316 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3318 LocTy Loc; Value *LHS, *RHS;
3319 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3320 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3321 ParseValue(LHS->getType(), RHS, PFS))
3324 if (!LHS->getType()->isIntOrIntVector())
3325 return Error(Loc,"instruction requires integer or integer vector operands");
3327 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3333 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3334 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3335 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3337 // Parse the integer/fp comparison predicate.
3341 if (ParseCmpPredicate(Pred, Opc) ||
3342 ParseTypeAndValue(LHS, Loc, PFS) ||
3343 ParseToken(lltok::comma, "expected ',' after compare value") ||
3344 ParseValue(LHS->getType(), RHS, PFS))
3347 if (Opc == Instruction::FCmp) {
3348 if (!LHS->getType()->isFPOrFPVector())
3349 return Error(Loc, "fcmp requires floating point operands");
3350 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3352 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
3353 if (!LHS->getType()->isIntOrIntVector() &&
3354 !isa<PointerType>(LHS->getType()))
3355 return Error(Loc, "icmp requires integer operands");
3356 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3361 //===----------------------------------------------------------------------===//
3362 // Other Instructions.
3363 //===----------------------------------------------------------------------===//
3367 /// ::= CastOpc TypeAndValue 'to' Type
3368 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
3370 LocTy Loc; Value *Op;
3371 PATypeHolder DestTy(Type::getVoidTy(Context));
3372 if (ParseTypeAndValue(Op, Loc, PFS) ||
3373 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
3377 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
3378 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
3379 return Error(Loc, "invalid cast opcode for cast from '" +
3380 Op->getType()->getDescription() + "' to '" +
3381 DestTy->getDescription() + "'");
3383 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
3388 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3389 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
3391 Value *Op0, *Op1, *Op2;
3392 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3393 ParseToken(lltok::comma, "expected ',' after select condition") ||
3394 ParseTypeAndValue(Op1, PFS) ||
3395 ParseToken(lltok::comma, "expected ',' after select value") ||
3396 ParseTypeAndValue(Op2, PFS))
3399 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
3400 return Error(Loc, Reason);
3402 Inst = SelectInst::Create(Op0, Op1, Op2);
3407 /// ::= 'va_arg' TypeAndValue ',' Type
3408 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
3410 PATypeHolder EltTy(Type::getVoidTy(Context));
3412 if (ParseTypeAndValue(Op, PFS) ||
3413 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
3414 ParseType(EltTy, TypeLoc))
3417 if (!EltTy->isFirstClassType())
3418 return Error(TypeLoc, "va_arg requires operand with first class type");
3420 Inst = new VAArgInst(Op, EltTy);
3424 /// ParseExtractElement
3425 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
3426 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
3429 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3430 ParseToken(lltok::comma, "expected ',' after extract value") ||
3431 ParseTypeAndValue(Op1, PFS))
3434 if (!ExtractElementInst::isValidOperands(Op0, Op1))
3435 return Error(Loc, "invalid extractelement operands");
3437 Inst = ExtractElementInst::Create(Op0, Op1);
3441 /// ParseInsertElement
3442 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3443 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
3445 Value *Op0, *Op1, *Op2;
3446 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3447 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3448 ParseTypeAndValue(Op1, PFS) ||
3449 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3450 ParseTypeAndValue(Op2, PFS))
3453 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
3454 return Error(Loc, "invalid insertelement operands");
3456 Inst = InsertElementInst::Create(Op0, Op1, Op2);
3460 /// ParseShuffleVector
3461 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3462 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
3464 Value *Op0, *Op1, *Op2;
3465 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3466 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
3467 ParseTypeAndValue(Op1, PFS) ||
3468 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
3469 ParseTypeAndValue(Op2, PFS))
3472 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
3473 return Error(Loc, "invalid extractelement operands");
3475 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
3480 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
3481 bool LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
3482 PATypeHolder Ty(Type::getVoidTy(Context));
3484 LocTy TypeLoc = Lex.getLoc();
3486 if (ParseType(Ty) ||
3487 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3488 ParseValue(Ty, Op0, PFS) ||
3489 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3490 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3491 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3494 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
3496 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
3498 if (!EatIfPresent(lltok::comma))
3501 if (Lex.getKind() == lltok::NamedOrCustomMD)
3504 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3505 ParseValue(Ty, Op0, PFS) ||
3506 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3507 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3508 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3512 if (Lex.getKind() == lltok::NamedOrCustomMD)
3513 if (ParseOptionalCustomMetadata()) return true;
3515 if (!Ty->isFirstClassType())
3516 return Error(TypeLoc, "phi node must have first class type");
3518 PHINode *PN = PHINode::Create(Ty);
3519 PN->reserveOperandSpace(PHIVals.size());
3520 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
3521 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
3527 /// ::= 'tail'? 'call' OptionalCallingConv OptionalAttrs Type Value
3528 /// ParameterList OptionalAttrs
3529 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
3531 unsigned RetAttrs, FnAttrs;
3533 PATypeHolder RetType(Type::getVoidTy(Context));
3536 SmallVector<ParamInfo, 16> ArgList;
3537 LocTy CallLoc = Lex.getLoc();
3539 if ((isTail && ParseToken(lltok::kw_call, "expected 'tail call'")) ||
3540 ParseOptionalCallingConv(CC) ||
3541 ParseOptionalAttrs(RetAttrs, 1) ||
3542 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3543 ParseValID(CalleeID) ||
3544 ParseParameterList(ArgList, PFS) ||
3545 ParseOptionalAttrs(FnAttrs, 2))
3548 // If RetType is a non-function pointer type, then this is the short syntax
3549 // for the call, which means that RetType is just the return type. Infer the
3550 // rest of the function argument types from the arguments that are present.
3551 const PointerType *PFTy = 0;
3552 const FunctionType *Ty = 0;
3553 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3554 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3555 // Pull out the types of all of the arguments...
3556 std::vector<const Type*> ParamTypes;
3557 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3558 ParamTypes.push_back(ArgList[i].V->getType());
3560 if (!FunctionType::isValidReturnType(RetType))
3561 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3563 Ty = FunctionType::get(RetType, ParamTypes, false);
3564 PFTy = PointerType::getUnqual(Ty);
3567 // Look up the callee.
3569 if (ConvertValIDToValue(PFTy, CalleeID, Callee, PFS)) return true;
3571 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
3572 // function attributes.
3573 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
3574 if (FnAttrs & ObsoleteFuncAttrs) {
3575 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
3576 FnAttrs &= ~ObsoleteFuncAttrs;
3579 // Set up the Attributes for the function.
3580 SmallVector<AttributeWithIndex, 8> Attrs;
3581 if (RetAttrs != Attribute::None)
3582 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3584 SmallVector<Value*, 8> Args;
3586 // Loop through FunctionType's arguments and ensure they are specified
3587 // correctly. Also, gather any parameter attributes.
3588 FunctionType::param_iterator I = Ty->param_begin();
3589 FunctionType::param_iterator E = Ty->param_end();
3590 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3591 const Type *ExpectedTy = 0;
3594 } else if (!Ty->isVarArg()) {
3595 return Error(ArgList[i].Loc, "too many arguments specified");
3598 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3599 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3600 ExpectedTy->getDescription() + "'");
3601 Args.push_back(ArgList[i].V);
3602 if (ArgList[i].Attrs != Attribute::None)
3603 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3607 return Error(CallLoc, "not enough parameters specified for call");
3609 if (FnAttrs != Attribute::None)
3610 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3612 // Finish off the Attributes and check them
3613 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3615 CallInst *CI = CallInst::Create(Callee, Args.begin(), Args.end());
3616 CI->setTailCall(isTail);
3617 CI->setCallingConv(CC);
3618 CI->setAttributes(PAL);
3623 //===----------------------------------------------------------------------===//
3624 // Memory Instructions.
3625 //===----------------------------------------------------------------------===//
3628 /// ::= 'malloc' Type (',' TypeAndValue)? (',' OptionalInfo)?
3629 /// ::= 'alloca' Type (',' TypeAndValue)? (',' OptionalInfo)?
3630 bool LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS,
3631 BasicBlock* BB, bool isAlloca) {
3632 PATypeHolder Ty(Type::getVoidTy(Context));
3635 unsigned Alignment = 0;
3636 if (ParseType(Ty)) return true;
3638 if (EatIfPresent(lltok::comma)) {
3639 if (Lex.getKind() == lltok::kw_align
3640 || Lex.getKind() == lltok::NamedOrCustomMD) {
3641 if (ParseOptionalInfo(Alignment)) return true;
3643 if (ParseTypeAndValue(Size, SizeLoc, PFS)) return true;
3644 if (EatIfPresent(lltok::comma))
3645 if (ParseOptionalInfo(Alignment)) return true;
3649 if (Size && Size->getType() != Type::getInt32Ty(Context))
3650 return Error(SizeLoc, "element count must be i32");
3653 Inst = new AllocaInst(Ty, Size, Alignment);
3657 // Autoupgrade old malloc instruction to malloc call.
3658 // FIXME: Remove in LLVM 3.0.
3659 const Type *IntPtrTy = Type::getInt32Ty(Context);
3660 Constant *AllocSize = ConstantExpr::getSizeOf(Ty);
3661 AllocSize = ConstantExpr::getTruncOrBitCast(AllocSize, IntPtrTy);
3663 // Prototype malloc as "void *(int32)".
3664 // This function is renamed as "malloc" in ValidateEndOfModule().
3665 MallocF = cast<Function>(
3666 M->getOrInsertFunction("", Type::getInt8PtrTy(Context), IntPtrTy, NULL));
3667 Inst = CallInst::CreateMalloc(BB, IntPtrTy, Ty, AllocSize, Size, MallocF);
3672 /// ::= 'free' TypeAndValue
3673 bool LLParser::ParseFree(Instruction *&Inst, PerFunctionState &PFS,
3675 Value *Val; LocTy Loc;
3676 if (ParseTypeAndValue(Val, Loc, PFS)) return true;
3677 if (!isa<PointerType>(Val->getType()))
3678 return Error(Loc, "operand to free must be a pointer");
3679 Inst = CallInst::CreateFree(Val, BB);
3684 /// ::= 'volatile'? 'load' TypeAndValue (',' OptionalInfo)?
3685 bool LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS,
3687 Value *Val; LocTy Loc;
3688 unsigned Alignment = 0;
3689 if (ParseTypeAndValue(Val, Loc, PFS)) return true;
3691 if (EatIfPresent(lltok::comma))
3692 if (ParseOptionalInfo(Alignment)) return true;
3694 if (!isa<PointerType>(Val->getType()) ||
3695 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
3696 return Error(Loc, "load operand must be a pointer to a first class type");
3698 Inst = new LoadInst(Val, "", isVolatile, Alignment);
3703 /// ::= 'volatile'? 'store' TypeAndValue ',' TypeAndValue (',' 'align' i32)?
3704 bool LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS,
3706 Value *Val, *Ptr; LocTy Loc, PtrLoc;
3707 unsigned Alignment = 0;
3708 if (ParseTypeAndValue(Val, Loc, PFS) ||
3709 ParseToken(lltok::comma, "expected ',' after store operand") ||
3710 ParseTypeAndValue(Ptr, PtrLoc, PFS))
3713 if (EatIfPresent(lltok::comma))
3714 if (ParseOptionalInfo(Alignment)) return true;
3716 if (!isa<PointerType>(Ptr->getType()))
3717 return Error(PtrLoc, "store operand must be a pointer");
3718 if (!Val->getType()->isFirstClassType())
3719 return Error(Loc, "store operand must be a first class value");
3720 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
3721 return Error(Loc, "stored value and pointer type do not match");
3723 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment);
3728 /// ::= 'getresult' TypeAndValue ',' i32
3729 /// FIXME: Remove support for getresult in LLVM 3.0
3730 bool LLParser::ParseGetResult(Instruction *&Inst, PerFunctionState &PFS) {
3731 Value *Val; LocTy ValLoc, EltLoc;
3733 if (ParseTypeAndValue(Val, ValLoc, PFS) ||
3734 ParseToken(lltok::comma, "expected ',' after getresult operand") ||
3735 ParseUInt32(Element, EltLoc))
3738 if (!isa<StructType>(Val->getType()) && !isa<ArrayType>(Val->getType()))
3739 return Error(ValLoc, "getresult inst requires an aggregate operand");
3740 if (!ExtractValueInst::getIndexedType(Val->getType(), Element))
3741 return Error(EltLoc, "invalid getresult index for value");
3742 Inst = ExtractValueInst::Create(Val, Element);
3746 /// ParseGetElementPtr
3747 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
3748 bool LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
3749 Value *Ptr, *Val; LocTy Loc, EltLoc;
3751 bool InBounds = EatIfPresent(lltok::kw_inbounds);
3753 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
3755 if (!isa<PointerType>(Ptr->getType()))
3756 return Error(Loc, "base of getelementptr must be a pointer");
3758 SmallVector<Value*, 16> Indices;
3759 while (EatIfPresent(lltok::comma)) {
3760 if (Lex.getKind() == lltok::NamedOrCustomMD)
3762 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
3763 if (!isa<IntegerType>(Val->getType()))
3764 return Error(EltLoc, "getelementptr index must be an integer");
3765 Indices.push_back(Val);
3767 if (Lex.getKind() == lltok::NamedOrCustomMD)
3768 if (ParseOptionalCustomMetadata()) return true;
3770 if (!GetElementPtrInst::getIndexedType(Ptr->getType(),
3771 Indices.begin(), Indices.end()))
3772 return Error(Loc, "invalid getelementptr indices");
3773 Inst = GetElementPtrInst::Create(Ptr, Indices.begin(), Indices.end());
3775 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
3779 /// ParseExtractValue
3780 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
3781 bool LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
3782 Value *Val; LocTy Loc;
3783 SmallVector<unsigned, 4> Indices;
3784 if (ParseTypeAndValue(Val, Loc, PFS) ||
3785 ParseIndexList(Indices))
3787 if (Lex.getKind() == lltok::NamedOrCustomMD)
3788 if (ParseOptionalCustomMetadata()) return true;
3790 if (!isa<StructType>(Val->getType()) && !isa<ArrayType>(Val->getType()))
3791 return Error(Loc, "extractvalue operand must be array or struct");
3793 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
3795 return Error(Loc, "invalid indices for extractvalue");
3796 Inst = ExtractValueInst::Create(Val, Indices.begin(), Indices.end());
3800 /// ParseInsertValue
3801 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
3802 bool LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
3803 Value *Val0, *Val1; LocTy Loc0, Loc1;
3804 SmallVector<unsigned, 4> Indices;
3805 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
3806 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
3807 ParseTypeAndValue(Val1, Loc1, PFS) ||
3808 ParseIndexList(Indices))
3810 if (Lex.getKind() == lltok::NamedOrCustomMD)
3811 if (ParseOptionalCustomMetadata()) return true;
3813 if (!isa<StructType>(Val0->getType()) && !isa<ArrayType>(Val0->getType()))
3814 return Error(Loc0, "extractvalue operand must be array or struct");
3816 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
3818 return Error(Loc0, "invalid indices for insertvalue");
3819 Inst = InsertValueInst::Create(Val0, Val1, Indices.begin(), Indices.end());
3823 //===----------------------------------------------------------------------===//
3824 // Embedded metadata.
3825 //===----------------------------------------------------------------------===//
3827 /// ParseMDNodeVector
3828 /// ::= Element (',' Element)*
3830 /// ::= 'null' | TypeAndValue
3831 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts) {
3832 assert(Lex.getKind() == lltok::lbrace);
3836 if (Lex.getKind() == lltok::kw_null) {
3840 PATypeHolder Ty(Type::getVoidTy(Context));
3841 if (ParseType(Ty)) return true;
3842 if (Lex.getKind() == lltok::Metadata) {
3844 MetadataBase *Node = 0;
3845 if (!ParseMDNode(Node))
3848 MetadataBase *MDS = 0;
3849 if (ParseMDString(MDS)) return true;
3854 if (ParseGlobalValue(Ty, C)) return true;
3859 } while (EatIfPresent(lltok::comma));