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::exclaim: if (ParseStandaloneMetadata()) return true; break;
172 case lltok::MetadataVar: 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(MDString *&Result) {
468 if (ParseStringConstant(Str)) return true;
469 Result = MDString::get(Context, Str);
474 // ::= '!' MDNodeNumber
475 bool LLParser::ParseMDNodeID(MDNode *&Result) {
476 // !{ ..., !42, ... }
478 if (ParseUInt32(MID)) return true;
480 // Check existing MDNode.
481 if (MID < NumberedMetadata.size() && NumberedMetadata[MID] != 0) {
482 Result = NumberedMetadata[MID];
486 // Create MDNode forward reference.
488 // FIXME: This is not unique enough!
489 std::string FwdRefName = "llvm.mdnode.fwdref." + utostr(MID);
490 Value *V = MDString::get(Context, FwdRefName);
491 MDNode *FwdNode = MDNode::get(Context, &V, 1);
492 ForwardRefMDNodes[MID] = std::make_pair(FwdNode, Lex.getLoc());
494 if (NumberedMetadata.size() <= MID)
495 NumberedMetadata.resize(MID+1);
496 NumberedMetadata[MID] = FwdNode;
501 /// ParseNamedMetadata:
502 /// !foo = !{ !1, !2 }
503 bool LLParser::ParseNamedMetadata() {
504 assert(Lex.getKind() == lltok::MetadataVar);
505 std::string Name = Lex.getStrVal();
508 if (ParseToken(lltok::equal, "expected '=' here") ||
509 ParseToken(lltok::exclaim, "Expected '!' here") ||
510 ParseToken(lltok::lbrace, "Expected '{' here"))
513 SmallVector<MetadataBase *, 8> Elts;
515 if (ParseToken(lltok::exclaim, "Expected '!' here"))
518 // FIXME: This rejects MDStrings. Are they legal in an named MDNode or not?
520 if (ParseMDNodeID(N)) return true;
522 } while (EatIfPresent(lltok::comma));
524 if (ParseToken(lltok::rbrace, "expected end of metadata node"))
527 NamedMDNode::Create(Context, Name, Elts.data(), Elts.size(), M);
531 /// ParseStandaloneMetadata:
533 bool LLParser::ParseStandaloneMetadata() {
534 assert(Lex.getKind() == lltok::exclaim);
536 unsigned MetadataID = 0;
539 PATypeHolder Ty(Type::getVoidTy(Context));
540 SmallVector<Value *, 16> Elts;
541 if (ParseUInt32(MetadataID) ||
542 ParseToken(lltok::equal, "expected '=' here") ||
543 ParseType(Ty, TyLoc) ||
544 ParseToken(lltok::exclaim, "Expected '!' here") ||
545 ParseToken(lltok::lbrace, "Expected '{' here") ||
546 ParseMDNodeVector(Elts) ||
547 ParseToken(lltok::rbrace, "expected end of metadata node"))
550 MDNode *Init = MDNode::get(Context, Elts.data(), Elts.size());
552 // See if this was forward referenced, if so, handle it.
553 std::map<unsigned, std::pair<TrackingVH<MDNode>, LocTy> >::iterator
554 FI = ForwardRefMDNodes.find(MetadataID);
555 if (FI != ForwardRefMDNodes.end()) {
556 FI->second.first->replaceAllUsesWith(Init);
557 ForwardRefMDNodes.erase(FI);
559 assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work");
561 if (MetadataID >= NumberedMetadata.size())
562 NumberedMetadata.resize(MetadataID+1);
564 if (NumberedMetadata[MetadataID] != 0)
565 return TokError("Metadata id is already used");
566 NumberedMetadata[MetadataID] = Init;
573 /// ::= GlobalVar '=' OptionalVisibility 'alias' OptionalLinkage Aliasee
576 /// ::= 'bitcast' '(' TypeAndValue 'to' Type ')'
577 /// ::= 'getelementptr' 'inbounds'? '(' ... ')'
579 /// Everything through visibility has already been parsed.
581 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc,
582 unsigned Visibility) {
583 assert(Lex.getKind() == lltok::kw_alias);
586 LocTy LinkageLoc = Lex.getLoc();
587 if (ParseOptionalLinkage(Linkage))
590 if (Linkage != GlobalValue::ExternalLinkage &&
591 Linkage != GlobalValue::WeakAnyLinkage &&
592 Linkage != GlobalValue::WeakODRLinkage &&
593 Linkage != GlobalValue::InternalLinkage &&
594 Linkage != GlobalValue::PrivateLinkage &&
595 Linkage != GlobalValue::LinkerPrivateLinkage)
596 return Error(LinkageLoc, "invalid linkage type for alias");
599 LocTy AliaseeLoc = Lex.getLoc();
600 if (Lex.getKind() != lltok::kw_bitcast &&
601 Lex.getKind() != lltok::kw_getelementptr) {
602 if (ParseGlobalTypeAndValue(Aliasee)) return true;
604 // The bitcast dest type is not present, it is implied by the dest type.
606 if (ParseValID(ID)) return true;
607 if (ID.Kind != ValID::t_Constant)
608 return Error(AliaseeLoc, "invalid aliasee");
609 Aliasee = ID.ConstantVal;
612 if (!isa<PointerType>(Aliasee->getType()))
613 return Error(AliaseeLoc, "alias must have pointer type");
615 // Okay, create the alias but do not insert it into the module yet.
616 GlobalAlias* GA = new GlobalAlias(Aliasee->getType(),
617 (GlobalValue::LinkageTypes)Linkage, Name,
619 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
621 // See if this value already exists in the symbol table. If so, it is either
622 // a redefinition or a definition of a forward reference.
623 if (GlobalValue *Val = M->getNamedValue(Name)) {
624 // See if this was a redefinition. If so, there is no entry in
626 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
627 I = ForwardRefVals.find(Name);
628 if (I == ForwardRefVals.end())
629 return Error(NameLoc, "redefinition of global named '@" + Name + "'");
631 // Otherwise, this was a definition of forward ref. Verify that types
633 if (Val->getType() != GA->getType())
634 return Error(NameLoc,
635 "forward reference and definition of alias have different types");
637 // If they agree, just RAUW the old value with the alias and remove the
639 Val->replaceAllUsesWith(GA);
640 Val->eraseFromParent();
641 ForwardRefVals.erase(I);
644 // Insert into the module, we know its name won't collide now.
645 M->getAliasList().push_back(GA);
646 assert(GA->getNameStr() == Name && "Should not be a name conflict!");
652 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalThreadLocal
653 /// OptionalAddrSpace GlobalType Type Const
654 /// ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
655 /// OptionalAddrSpace GlobalType Type Const
657 /// Everything through visibility has been parsed already.
659 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
660 unsigned Linkage, bool HasLinkage,
661 unsigned Visibility) {
663 bool ThreadLocal, IsConstant;
666 PATypeHolder Ty(Type::getVoidTy(Context));
667 if (ParseOptionalToken(lltok::kw_thread_local, ThreadLocal) ||
668 ParseOptionalAddrSpace(AddrSpace) ||
669 ParseGlobalType(IsConstant) ||
670 ParseType(Ty, TyLoc))
673 // If the linkage is specified and is external, then no initializer is
676 if (!HasLinkage || (Linkage != GlobalValue::DLLImportLinkage &&
677 Linkage != GlobalValue::ExternalWeakLinkage &&
678 Linkage != GlobalValue::ExternalLinkage)) {
679 if (ParseGlobalValue(Ty, Init))
683 if (isa<FunctionType>(Ty) || Ty->isLabelTy())
684 return Error(TyLoc, "invalid type for global variable");
686 GlobalVariable *GV = 0;
688 // See if the global was forward referenced, if so, use the global.
690 if (GlobalValue *GVal = M->getNamedValue(Name)) {
691 if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
692 return Error(NameLoc, "redefinition of global '@" + Name + "'");
693 GV = cast<GlobalVariable>(GVal);
696 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
697 I = ForwardRefValIDs.find(NumberedVals.size());
698 if (I != ForwardRefValIDs.end()) {
699 GV = cast<GlobalVariable>(I->second.first);
700 ForwardRefValIDs.erase(I);
705 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, 0,
706 Name, 0, false, AddrSpace);
708 if (GV->getType()->getElementType() != Ty)
710 "forward reference and definition of global have different types");
712 // Move the forward-reference to the correct spot in the module.
713 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
717 NumberedVals.push_back(GV);
719 // Set the parsed properties on the global.
721 GV->setInitializer(Init);
722 GV->setConstant(IsConstant);
723 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
724 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
725 GV->setThreadLocal(ThreadLocal);
727 // Parse attributes on the global.
728 while (Lex.getKind() == lltok::comma) {
731 if (Lex.getKind() == lltok::kw_section) {
733 GV->setSection(Lex.getStrVal());
734 if (ParseToken(lltok::StringConstant, "expected global section string"))
736 } else if (Lex.getKind() == lltok::kw_align) {
738 if (ParseOptionalAlignment(Alignment)) return true;
739 GV->setAlignment(Alignment);
741 TokError("unknown global variable property!");
749 //===----------------------------------------------------------------------===//
750 // GlobalValue Reference/Resolution Routines.
751 //===----------------------------------------------------------------------===//
753 /// GetGlobalVal - Get a value with the specified name or ID, creating a
754 /// forward reference record if needed. This can return null if the value
755 /// exists but does not have the right type.
756 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, const Type *Ty,
758 const PointerType *PTy = dyn_cast<PointerType>(Ty);
760 Error(Loc, "global variable reference must have pointer type");
764 // Look this name up in the normal function symbol table.
766 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
768 // If this is a forward reference for the value, see if we already created a
769 // forward ref record.
771 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
772 I = ForwardRefVals.find(Name);
773 if (I != ForwardRefVals.end())
774 Val = I->second.first;
777 // If we have the value in the symbol table or fwd-ref table, return it.
779 if (Val->getType() == Ty) return Val;
780 Error(Loc, "'@" + Name + "' defined with type '" +
781 Val->getType()->getDescription() + "'");
785 // Otherwise, create a new forward reference for this value and remember it.
787 if (const FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType())) {
788 // Function types can return opaque but functions can't.
789 if (isa<OpaqueType>(FT->getReturnType())) {
790 Error(Loc, "function may not return opaque type");
794 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
796 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
797 GlobalValue::ExternalWeakLinkage, 0, Name);
800 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
804 GlobalValue *LLParser::GetGlobalVal(unsigned ID, const Type *Ty, LocTy Loc) {
805 const PointerType *PTy = dyn_cast<PointerType>(Ty);
807 Error(Loc, "global variable reference must have pointer type");
811 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
813 // If this is a forward reference for the value, see if we already created a
814 // forward ref record.
816 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
817 I = ForwardRefValIDs.find(ID);
818 if (I != ForwardRefValIDs.end())
819 Val = I->second.first;
822 // If we have the value in the symbol table or fwd-ref table, return it.
824 if (Val->getType() == Ty) return Val;
825 Error(Loc, "'@" + utostr(ID) + "' defined with type '" +
826 Val->getType()->getDescription() + "'");
830 // Otherwise, create a new forward reference for this value and remember it.
832 if (const FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType())) {
833 // Function types can return opaque but functions can't.
834 if (isa<OpaqueType>(FT->getReturnType())) {
835 Error(Loc, "function may not return opaque type");
838 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
840 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
841 GlobalValue::ExternalWeakLinkage, 0, "");
844 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
849 //===----------------------------------------------------------------------===//
851 //===----------------------------------------------------------------------===//
853 /// ParseToken - If the current token has the specified kind, eat it and return
854 /// success. Otherwise, emit the specified error and return failure.
855 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
856 if (Lex.getKind() != T)
857 return TokError(ErrMsg);
862 /// ParseStringConstant
863 /// ::= StringConstant
864 bool LLParser::ParseStringConstant(std::string &Result) {
865 if (Lex.getKind() != lltok::StringConstant)
866 return TokError("expected string constant");
867 Result = Lex.getStrVal();
874 bool LLParser::ParseUInt32(unsigned &Val) {
875 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
876 return TokError("expected integer");
877 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
878 if (Val64 != unsigned(Val64))
879 return TokError("expected 32-bit integer (too large)");
886 /// ParseOptionalAddrSpace
888 /// := 'addrspace' '(' uint32 ')'
889 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
891 if (!EatIfPresent(lltok::kw_addrspace))
893 return ParseToken(lltok::lparen, "expected '(' in address space") ||
894 ParseUInt32(AddrSpace) ||
895 ParseToken(lltok::rparen, "expected ')' in address space");
898 /// ParseOptionalAttrs - Parse a potentially empty attribute list. AttrKind
899 /// indicates what kind of attribute list this is: 0: function arg, 1: result,
900 /// 2: function attr.
901 /// 3: function arg after value: FIXME: REMOVE IN LLVM 3.0
902 bool LLParser::ParseOptionalAttrs(unsigned &Attrs, unsigned AttrKind) {
903 Attrs = Attribute::None;
904 LocTy AttrLoc = Lex.getLoc();
907 switch (Lex.getKind()) {
910 // Treat these as signext/zeroext if they occur in the argument list after
911 // the value, as in "call i8 @foo(i8 10 sext)". If they occur before the
912 // value, as in "call i8 @foo(i8 sext (" then it is part of a constant
914 // FIXME: REMOVE THIS IN LLVM 3.0
916 if (Lex.getKind() == lltok::kw_sext)
917 Attrs |= Attribute::SExt;
919 Attrs |= Attribute::ZExt;
923 default: // End of attributes.
924 if (AttrKind != 2 && (Attrs & Attribute::FunctionOnly))
925 return Error(AttrLoc, "invalid use of function-only attribute");
927 if (AttrKind != 0 && AttrKind != 3 && (Attrs & Attribute::ParameterOnly))
928 return Error(AttrLoc, "invalid use of parameter-only attribute");
931 case lltok::kw_zeroext: Attrs |= Attribute::ZExt; break;
932 case lltok::kw_signext: Attrs |= Attribute::SExt; break;
933 case lltok::kw_inreg: Attrs |= Attribute::InReg; break;
934 case lltok::kw_sret: Attrs |= Attribute::StructRet; break;
935 case lltok::kw_noalias: Attrs |= Attribute::NoAlias; break;
936 case lltok::kw_nocapture: Attrs |= Attribute::NoCapture; break;
937 case lltok::kw_byval: Attrs |= Attribute::ByVal; break;
938 case lltok::kw_nest: Attrs |= Attribute::Nest; break;
940 case lltok::kw_noreturn: Attrs |= Attribute::NoReturn; break;
941 case lltok::kw_nounwind: Attrs |= Attribute::NoUnwind; break;
942 case lltok::kw_noinline: Attrs |= Attribute::NoInline; break;
943 case lltok::kw_readnone: Attrs |= Attribute::ReadNone; break;
944 case lltok::kw_readonly: Attrs |= Attribute::ReadOnly; break;
945 case lltok::kw_inlinehint: Attrs |= Attribute::InlineHint; break;
946 case lltok::kw_alwaysinline: Attrs |= Attribute::AlwaysInline; break;
947 case lltok::kw_optsize: Attrs |= Attribute::OptimizeForSize; break;
948 case lltok::kw_ssp: Attrs |= Attribute::StackProtect; break;
949 case lltok::kw_sspreq: Attrs |= Attribute::StackProtectReq; break;
950 case lltok::kw_noredzone: Attrs |= Attribute::NoRedZone; break;
951 case lltok::kw_noimplicitfloat: Attrs |= Attribute::NoImplicitFloat; break;
952 case lltok::kw_naked: Attrs |= Attribute::Naked; break;
954 case lltok::kw_align: {
956 if (ParseOptionalAlignment(Alignment))
958 Attrs |= Attribute::constructAlignmentFromInt(Alignment);
966 /// ParseOptionalLinkage
969 /// ::= 'linker_private'
974 /// ::= 'linkonce_odr'
979 /// ::= 'extern_weak'
981 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
983 switch (Lex.getKind()) {
984 default: Res=GlobalValue::ExternalLinkage; return false;
985 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
986 case lltok::kw_linker_private: Res = GlobalValue::LinkerPrivateLinkage; break;
987 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
988 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
989 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
990 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
991 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
992 case lltok::kw_available_externally:
993 Res = GlobalValue::AvailableExternallyLinkage;
995 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
996 case lltok::kw_dllexport: Res = GlobalValue::DLLExportLinkage; break;
997 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
998 case lltok::kw_dllimport: Res = GlobalValue::DLLImportLinkage; break;
999 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1000 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1007 /// ParseOptionalVisibility
1013 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1014 switch (Lex.getKind()) {
1015 default: Res = GlobalValue::DefaultVisibility; return false;
1016 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1017 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1018 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1024 /// ParseOptionalCallingConv
1029 /// ::= 'x86_stdcallcc'
1030 /// ::= 'x86_fastcallcc'
1031 /// ::= 'arm_apcscc'
1032 /// ::= 'arm_aapcscc'
1033 /// ::= 'arm_aapcs_vfpcc'
1034 /// ::= 'msp430_intrcc'
1037 bool LLParser::ParseOptionalCallingConv(CallingConv::ID &CC) {
1038 switch (Lex.getKind()) {
1039 default: CC = CallingConv::C; return false;
1040 case lltok::kw_ccc: CC = CallingConv::C; break;
1041 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1042 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1043 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1044 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1045 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1046 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1047 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1048 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1049 case lltok::kw_cc: {
1050 unsigned ArbitraryCC;
1052 if (ParseUInt32(ArbitraryCC)) {
1055 CC = static_cast<CallingConv::ID>(ArbitraryCC);
1065 /// ParseInstructionMetadata
1066 /// ::= !dbg !42 (',' !dbg !57)*
1068 ParseInstructionMetadata(SmallVectorImpl<std::pair<unsigned,
1069 MDNode *> > &Result){
1071 if (Lex.getKind() != lltok::MetadataVar)
1072 return TokError("expected metadata after comma");
1074 std::string Name = Lex.getStrVal();
1078 if (ParseToken(lltok::exclaim, "expected '!' here") ||
1079 ParseMDNodeID(Node))
1082 unsigned MDK = M->getMDKindID(Name.c_str());
1083 Result.push_back(std::make_pair(MDK, Node));
1085 // If this is the end of the list, we're done.
1086 } while (EatIfPresent(lltok::comma));
1090 /// ParseOptionalAlignment
1093 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1095 if (!EatIfPresent(lltok::kw_align))
1097 LocTy AlignLoc = Lex.getLoc();
1098 if (ParseUInt32(Alignment)) return true;
1099 if (!isPowerOf2_32(Alignment))
1100 return Error(AlignLoc, "alignment is not a power of two");
1104 /// ParseOptionalCommaAlign
1108 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1110 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1111 bool &AteExtraComma) {
1112 AteExtraComma = false;
1113 while (EatIfPresent(lltok::comma)) {
1114 // Metadata at the end is an early exit.
1115 if (Lex.getKind() == lltok::MetadataVar) {
1116 AteExtraComma = true;
1120 if (Lex.getKind() == lltok::kw_align) {
1121 if (ParseOptionalAlignment(Alignment)) return true;
1130 /// ParseIndexList - This parses the index list for an insert/extractvalue
1131 /// instruction. This sets AteExtraComma in the case where we eat an extra
1132 /// comma at the end of the line and find that it is followed by metadata.
1133 /// Clients that don't allow metadata can call the version of this function that
1134 /// only takes one argument.
1137 /// ::= (',' uint32)+
1139 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1140 bool &AteExtraComma) {
1141 AteExtraComma = false;
1143 if (Lex.getKind() != lltok::comma)
1144 return TokError("expected ',' as start of index list");
1146 while (EatIfPresent(lltok::comma)) {
1147 if (Lex.getKind() == lltok::MetadataVar) {
1148 AteExtraComma = true;
1152 if (ParseUInt32(Idx)) return true;
1153 Indices.push_back(Idx);
1159 //===----------------------------------------------------------------------===//
1161 //===----------------------------------------------------------------------===//
1163 /// ParseType - Parse and resolve a full type.
1164 bool LLParser::ParseType(PATypeHolder &Result, bool AllowVoid) {
1165 LocTy TypeLoc = Lex.getLoc();
1166 if (ParseTypeRec(Result)) return true;
1168 // Verify no unresolved uprefs.
1169 if (!UpRefs.empty())
1170 return Error(UpRefs.back().Loc, "invalid unresolved type up reference");
1172 if (!AllowVoid && Result.get()->isVoidTy())
1173 return Error(TypeLoc, "void type only allowed for function results");
1178 /// HandleUpRefs - Every time we finish a new layer of types, this function is
1179 /// called. It loops through the UpRefs vector, which is a list of the
1180 /// currently active types. For each type, if the up-reference is contained in
1181 /// the newly completed type, we decrement the level count. When the level
1182 /// count reaches zero, the up-referenced type is the type that is passed in:
1183 /// thus we can complete the cycle.
1185 PATypeHolder LLParser::HandleUpRefs(const Type *ty) {
1186 // If Ty isn't abstract, or if there are no up-references in it, then there is
1187 // nothing to resolve here.
1188 if (!ty->isAbstract() || UpRefs.empty()) return ty;
1190 PATypeHolder Ty(ty);
1192 dbgs() << "Type '" << Ty->getDescription()
1193 << "' newly formed. Resolving upreferences.\n"
1194 << UpRefs.size() << " upreferences active!\n";
1197 // If we find any resolvable upreferences (i.e., those whose NestingLevel goes
1198 // to zero), we resolve them all together before we resolve them to Ty. At
1199 // the end of the loop, if there is anything to resolve to Ty, it will be in
1201 OpaqueType *TypeToResolve = 0;
1203 for (unsigned i = 0; i != UpRefs.size(); ++i) {
1204 // Determine if 'Ty' directly contains this up-references 'LastContainedTy'.
1206 std::find(Ty->subtype_begin(), Ty->subtype_end(),
1207 UpRefs[i].LastContainedTy) != Ty->subtype_end();
1210 dbgs() << " UR#" << i << " - TypeContains(" << Ty->getDescription() << ", "
1211 << UpRefs[i].LastContainedTy->getDescription() << ") = "
1212 << (ContainsType ? "true" : "false")
1213 << " level=" << UpRefs[i].NestingLevel << "\n";
1218 // Decrement level of upreference
1219 unsigned Level = --UpRefs[i].NestingLevel;
1220 UpRefs[i].LastContainedTy = Ty;
1222 // If the Up-reference has a non-zero level, it shouldn't be resolved yet.
1227 dbgs() << " * Resolving upreference for " << UpRefs[i].UpRefTy << "\n";
1230 TypeToResolve = UpRefs[i].UpRefTy;
1232 UpRefs[i].UpRefTy->refineAbstractTypeTo(TypeToResolve);
1233 UpRefs.erase(UpRefs.begin()+i); // Remove from upreference list.
1234 --i; // Do not skip the next element.
1238 TypeToResolve->refineAbstractTypeTo(Ty);
1244 /// ParseTypeRec - The recursive function used to process the internal
1245 /// implementation details of types.
1246 bool LLParser::ParseTypeRec(PATypeHolder &Result) {
1247 switch (Lex.getKind()) {
1249 return TokError("expected type");
1251 // TypeRec ::= 'float' | 'void' (etc)
1252 Result = Lex.getTyVal();
1255 case lltok::kw_opaque:
1256 // TypeRec ::= 'opaque'
1257 Result = OpaqueType::get(Context);
1261 // TypeRec ::= '{' ... '}'
1262 if (ParseStructType(Result, false))
1265 case lltok::lsquare:
1266 // TypeRec ::= '[' ... ']'
1267 Lex.Lex(); // eat the lsquare.
1268 if (ParseArrayVectorType(Result, false))
1271 case lltok::less: // Either vector or packed struct.
1272 // TypeRec ::= '<' ... '>'
1274 if (Lex.getKind() == lltok::lbrace) {
1275 if (ParseStructType(Result, true) ||
1276 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1278 } else if (ParseArrayVectorType(Result, true))
1281 case lltok::LocalVar:
1282 case lltok::StringConstant: // FIXME: REMOVE IN LLVM 3.0
1284 if (const Type *T = M->getTypeByName(Lex.getStrVal())) {
1287 Result = OpaqueType::get(Context);
1288 ForwardRefTypes.insert(std::make_pair(Lex.getStrVal(),
1289 std::make_pair(Result,
1291 M->addTypeName(Lex.getStrVal(), Result.get());
1296 case lltok::LocalVarID:
1298 if (Lex.getUIntVal() < NumberedTypes.size())
1299 Result = NumberedTypes[Lex.getUIntVal()];
1301 std::map<unsigned, std::pair<PATypeHolder, LocTy> >::iterator
1302 I = ForwardRefTypeIDs.find(Lex.getUIntVal());
1303 if (I != ForwardRefTypeIDs.end())
1304 Result = I->second.first;
1306 Result = OpaqueType::get(Context);
1307 ForwardRefTypeIDs.insert(std::make_pair(Lex.getUIntVal(),
1308 std::make_pair(Result,
1314 case lltok::backslash: {
1315 // TypeRec ::= '\' 4
1318 if (ParseUInt32(Val)) return true;
1319 OpaqueType *OT = OpaqueType::get(Context); //Use temporary placeholder.
1320 UpRefs.push_back(UpRefRecord(Lex.getLoc(), Val, OT));
1326 // Parse the type suffixes.
1328 switch (Lex.getKind()) {
1330 default: return false;
1332 // TypeRec ::= TypeRec '*'
1334 if (Result.get()->isLabelTy())
1335 return TokError("basic block pointers are invalid");
1336 if (Result.get()->isVoidTy())
1337 return TokError("pointers to void are invalid; use i8* instead");
1338 if (!PointerType::isValidElementType(Result.get()))
1339 return TokError("pointer to this type is invalid");
1340 Result = HandleUpRefs(PointerType::getUnqual(Result.get()));
1344 // TypeRec ::= TypeRec 'addrspace' '(' uint32 ')' '*'
1345 case lltok::kw_addrspace: {
1346 if (Result.get()->isLabelTy())
1347 return TokError("basic block pointers are invalid");
1348 if (Result.get()->isVoidTy())
1349 return TokError("pointers to void are invalid; use i8* instead");
1350 if (!PointerType::isValidElementType(Result.get()))
1351 return TokError("pointer to this type is invalid");
1353 if (ParseOptionalAddrSpace(AddrSpace) ||
1354 ParseToken(lltok::star, "expected '*' in address space"))
1357 Result = HandleUpRefs(PointerType::get(Result.get(), AddrSpace));
1361 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1363 if (ParseFunctionType(Result))
1370 /// ParseParameterList
1372 /// ::= '(' Arg (',' Arg)* ')'
1374 /// ::= Type OptionalAttributes Value OptionalAttributes
1375 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1376 PerFunctionState &PFS) {
1377 if (ParseToken(lltok::lparen, "expected '(' in call"))
1380 while (Lex.getKind() != lltok::rparen) {
1381 // If this isn't the first argument, we need a comma.
1382 if (!ArgList.empty() &&
1383 ParseToken(lltok::comma, "expected ',' in argument list"))
1386 // Parse the argument.
1388 PATypeHolder ArgTy(Type::getVoidTy(Context));
1389 unsigned ArgAttrs1 = Attribute::None;
1390 unsigned ArgAttrs2 = Attribute::None;
1392 if (ParseType(ArgTy, ArgLoc))
1395 // Otherwise, handle normal operands.
1396 if (ParseOptionalAttrs(ArgAttrs1, 0) ||
1397 ParseValue(ArgTy, V, PFS) ||
1398 // FIXME: Should not allow attributes after the argument, remove this
1400 ParseOptionalAttrs(ArgAttrs2, 3))
1402 ArgList.push_back(ParamInfo(ArgLoc, V, ArgAttrs1|ArgAttrs2));
1405 Lex.Lex(); // Lex the ')'.
1411 /// ParseArgumentList - Parse the argument list for a function type or function
1412 /// prototype. If 'inType' is true then we are parsing a FunctionType.
1413 /// ::= '(' ArgTypeListI ')'
1417 /// ::= ArgTypeList ',' '...'
1418 /// ::= ArgType (',' ArgType)*
1420 bool LLParser::ParseArgumentList(std::vector<ArgInfo> &ArgList,
1421 bool &isVarArg, bool inType) {
1423 assert(Lex.getKind() == lltok::lparen);
1424 Lex.Lex(); // eat the (.
1426 if (Lex.getKind() == lltok::rparen) {
1428 } else if (Lex.getKind() == lltok::dotdotdot) {
1432 LocTy TypeLoc = Lex.getLoc();
1433 PATypeHolder ArgTy(Type::getVoidTy(Context));
1437 // If we're parsing a type, use ParseTypeRec, because we allow recursive
1438 // types (such as a function returning a pointer to itself). If parsing a
1439 // function prototype, we require fully resolved types.
1440 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1441 ParseOptionalAttrs(Attrs, 0)) return true;
1443 if (ArgTy->isVoidTy())
1444 return Error(TypeLoc, "argument can not have void type");
1446 if (Lex.getKind() == lltok::LocalVar ||
1447 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1448 Name = Lex.getStrVal();
1452 if (!FunctionType::isValidArgumentType(ArgTy))
1453 return Error(TypeLoc, "invalid type for function argument");
1455 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1457 while (EatIfPresent(lltok::comma)) {
1458 // Handle ... at end of arg list.
1459 if (EatIfPresent(lltok::dotdotdot)) {
1464 // Otherwise must be an argument type.
1465 TypeLoc = Lex.getLoc();
1466 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1467 ParseOptionalAttrs(Attrs, 0)) return true;
1469 if (ArgTy->isVoidTy())
1470 return Error(TypeLoc, "argument can not have void type");
1472 if (Lex.getKind() == lltok::LocalVar ||
1473 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1474 Name = Lex.getStrVal();
1480 if (!ArgTy->isFirstClassType() && !isa<OpaqueType>(ArgTy))
1481 return Error(TypeLoc, "invalid type for function argument");
1483 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1487 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1490 /// ParseFunctionType
1491 /// ::= Type ArgumentList OptionalAttrs
1492 bool LLParser::ParseFunctionType(PATypeHolder &Result) {
1493 assert(Lex.getKind() == lltok::lparen);
1495 if (!FunctionType::isValidReturnType(Result))
1496 return TokError("invalid function return type");
1498 std::vector<ArgInfo> ArgList;
1501 if (ParseArgumentList(ArgList, isVarArg, true) ||
1502 // FIXME: Allow, but ignore attributes on function types!
1503 // FIXME: Remove in LLVM 3.0
1504 ParseOptionalAttrs(Attrs, 2))
1507 // Reject names on the arguments lists.
1508 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1509 if (!ArgList[i].Name.empty())
1510 return Error(ArgList[i].Loc, "argument name invalid in function type");
1511 if (!ArgList[i].Attrs != 0) {
1512 // Allow but ignore attributes on function types; this permits
1514 // FIXME: REJECT ATTRIBUTES ON FUNCTION TYPES in LLVM 3.0
1518 std::vector<const Type*> ArgListTy;
1519 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1520 ArgListTy.push_back(ArgList[i].Type);
1522 Result = HandleUpRefs(FunctionType::get(Result.get(),
1523 ArgListTy, isVarArg));
1527 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
1530 /// ::= '{' TypeRec (',' TypeRec)* '}'
1531 /// ::= '<' '{' '}' '>'
1532 /// ::= '<' '{' TypeRec (',' TypeRec)* '}' '>'
1533 bool LLParser::ParseStructType(PATypeHolder &Result, bool Packed) {
1534 assert(Lex.getKind() == lltok::lbrace);
1535 Lex.Lex(); // Consume the '{'
1537 if (EatIfPresent(lltok::rbrace)) {
1538 Result = StructType::get(Context, Packed);
1542 std::vector<PATypeHolder> ParamsList;
1543 LocTy EltTyLoc = Lex.getLoc();
1544 if (ParseTypeRec(Result)) return true;
1545 ParamsList.push_back(Result);
1547 if (Result->isVoidTy())
1548 return Error(EltTyLoc, "struct element can not have void type");
1549 if (!StructType::isValidElementType(Result))
1550 return Error(EltTyLoc, "invalid element type for struct");
1552 while (EatIfPresent(lltok::comma)) {
1553 EltTyLoc = Lex.getLoc();
1554 if (ParseTypeRec(Result)) return true;
1556 if (Result->isVoidTy())
1557 return Error(EltTyLoc, "struct element can not have void type");
1558 if (!StructType::isValidElementType(Result))
1559 return Error(EltTyLoc, "invalid element type for struct");
1561 ParamsList.push_back(Result);
1564 if (ParseToken(lltok::rbrace, "expected '}' at end of struct"))
1567 std::vector<const Type*> ParamsListTy;
1568 for (unsigned i = 0, e = ParamsList.size(); i != e; ++i)
1569 ParamsListTy.push_back(ParamsList[i].get());
1570 Result = HandleUpRefs(StructType::get(Context, ParamsListTy, Packed));
1574 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
1575 /// token has already been consumed.
1577 /// ::= '[' APSINTVAL 'x' Types ']'
1578 /// ::= '<' APSINTVAL 'x' Types '>'
1579 bool LLParser::ParseArrayVectorType(PATypeHolder &Result, bool isVector) {
1580 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
1581 Lex.getAPSIntVal().getBitWidth() > 64)
1582 return TokError("expected number in address space");
1584 LocTy SizeLoc = Lex.getLoc();
1585 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
1588 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
1591 LocTy TypeLoc = Lex.getLoc();
1592 PATypeHolder EltTy(Type::getVoidTy(Context));
1593 if (ParseTypeRec(EltTy)) return true;
1595 if (EltTy->isVoidTy())
1596 return Error(TypeLoc, "array and vector element type cannot be void");
1598 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
1599 "expected end of sequential type"))
1604 return Error(SizeLoc, "zero element vector is illegal");
1605 if ((unsigned)Size != Size)
1606 return Error(SizeLoc, "size too large for vector");
1607 if (!VectorType::isValidElementType(EltTy))
1608 return Error(TypeLoc, "vector element type must be fp or integer");
1609 Result = VectorType::get(EltTy, unsigned(Size));
1611 if (!ArrayType::isValidElementType(EltTy))
1612 return Error(TypeLoc, "invalid array element type");
1613 Result = HandleUpRefs(ArrayType::get(EltTy, Size));
1618 //===----------------------------------------------------------------------===//
1619 // Function Semantic Analysis.
1620 //===----------------------------------------------------------------------===//
1622 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
1624 : P(p), F(f), FunctionNumber(functionNumber) {
1626 // Insert unnamed arguments into the NumberedVals list.
1627 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
1630 NumberedVals.push_back(AI);
1633 LLParser::PerFunctionState::~PerFunctionState() {
1634 // If there were any forward referenced non-basicblock values, delete them.
1635 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
1636 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
1637 if (!isa<BasicBlock>(I->second.first)) {
1638 I->second.first->replaceAllUsesWith(
1639 UndefValue::get(I->second.first->getType()));
1640 delete I->second.first;
1641 I->second.first = 0;
1644 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1645 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
1646 if (!isa<BasicBlock>(I->second.first)) {
1647 I->second.first->replaceAllUsesWith(
1648 UndefValue::get(I->second.first->getType()));
1649 delete I->second.first;
1650 I->second.first = 0;
1654 bool LLParser::PerFunctionState::FinishFunction() {
1655 // Check to see if someone took the address of labels in this block.
1656 if (!P.ForwardRefBlockAddresses.empty()) {
1658 if (!F.getName().empty()) {
1659 FunctionID.Kind = ValID::t_GlobalName;
1660 FunctionID.StrVal = F.getName();
1662 FunctionID.Kind = ValID::t_GlobalID;
1663 FunctionID.UIntVal = FunctionNumber;
1666 std::map<ValID, std::vector<std::pair<ValID, GlobalValue*> > >::iterator
1667 FRBAI = P.ForwardRefBlockAddresses.find(FunctionID);
1668 if (FRBAI != P.ForwardRefBlockAddresses.end()) {
1669 // Resolve all these references.
1670 if (P.ResolveForwardRefBlockAddresses(&F, FRBAI->second, this))
1673 P.ForwardRefBlockAddresses.erase(FRBAI);
1677 if (!ForwardRefVals.empty())
1678 return P.Error(ForwardRefVals.begin()->second.second,
1679 "use of undefined value '%" + ForwardRefVals.begin()->first +
1681 if (!ForwardRefValIDs.empty())
1682 return P.Error(ForwardRefValIDs.begin()->second.second,
1683 "use of undefined value '%" +
1684 utostr(ForwardRefValIDs.begin()->first) + "'");
1689 /// GetVal - Get a value with the specified name or ID, creating a
1690 /// forward reference record if needed. This can return null if the value
1691 /// exists but does not have the right type.
1692 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
1693 const Type *Ty, LocTy Loc) {
1694 // Look this name up in the normal function symbol table.
1695 Value *Val = F.getValueSymbolTable().lookup(Name);
1697 // If this is a forward reference for the value, see if we already created a
1698 // forward ref record.
1700 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1701 I = ForwardRefVals.find(Name);
1702 if (I != ForwardRefVals.end())
1703 Val = I->second.first;
1706 // If we have the value in the symbol table or fwd-ref table, return it.
1708 if (Val->getType() == Ty) return Val;
1709 if (Ty->isLabelTy())
1710 P.Error(Loc, "'%" + Name + "' is not a basic block");
1712 P.Error(Loc, "'%" + Name + "' defined with type '" +
1713 Val->getType()->getDescription() + "'");
1717 // Don't make placeholders with invalid type.
1718 if (!Ty->isFirstClassType() && !isa<OpaqueType>(Ty) && !Ty->isLabelTy()) {
1719 P.Error(Loc, "invalid use of a non-first-class type");
1723 // Otherwise, create a new forward reference for this value and remember it.
1725 if (Ty->isLabelTy())
1726 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
1728 FwdVal = new Argument(Ty, Name);
1730 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1734 Value *LLParser::PerFunctionState::GetVal(unsigned ID, const Type *Ty,
1736 // Look this name up in the normal function symbol table.
1737 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
1739 // If this is a forward reference for the value, see if we already created a
1740 // forward ref record.
1742 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1743 I = ForwardRefValIDs.find(ID);
1744 if (I != ForwardRefValIDs.end())
1745 Val = I->second.first;
1748 // If we have the value in the symbol table or fwd-ref table, return it.
1750 if (Val->getType() == Ty) return Val;
1751 if (Ty->isLabelTy())
1752 P.Error(Loc, "'%" + utostr(ID) + "' is not a basic block");
1754 P.Error(Loc, "'%" + utostr(ID) + "' defined with type '" +
1755 Val->getType()->getDescription() + "'");
1759 if (!Ty->isFirstClassType() && !isa<OpaqueType>(Ty) && !Ty->isLabelTy()) {
1760 P.Error(Loc, "invalid use of a non-first-class type");
1764 // Otherwise, create a new forward reference for this value and remember it.
1766 if (Ty->isLabelTy())
1767 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
1769 FwdVal = new Argument(Ty);
1771 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1775 /// SetInstName - After an instruction is parsed and inserted into its
1776 /// basic block, this installs its name.
1777 bool LLParser::PerFunctionState::SetInstName(int NameID,
1778 const std::string &NameStr,
1779 LocTy NameLoc, Instruction *Inst) {
1780 // If this instruction has void type, it cannot have a name or ID specified.
1781 if (Inst->getType()->isVoidTy()) {
1782 if (NameID != -1 || !NameStr.empty())
1783 return P.Error(NameLoc, "instructions returning void cannot have a name");
1787 // If this was a numbered instruction, verify that the instruction is the
1788 // expected value and resolve any forward references.
1789 if (NameStr.empty()) {
1790 // If neither a name nor an ID was specified, just use the next ID.
1792 NameID = NumberedVals.size();
1794 if (unsigned(NameID) != NumberedVals.size())
1795 return P.Error(NameLoc, "instruction expected to be numbered '%" +
1796 utostr(NumberedVals.size()) + "'");
1798 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
1799 ForwardRefValIDs.find(NameID);
1800 if (FI != ForwardRefValIDs.end()) {
1801 if (FI->second.first->getType() != Inst->getType())
1802 return P.Error(NameLoc, "instruction forward referenced with type '" +
1803 FI->second.first->getType()->getDescription() + "'");
1804 FI->second.first->replaceAllUsesWith(Inst);
1805 delete FI->second.first;
1806 ForwardRefValIDs.erase(FI);
1809 NumberedVals.push_back(Inst);
1813 // Otherwise, the instruction had a name. Resolve forward refs and set it.
1814 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1815 FI = ForwardRefVals.find(NameStr);
1816 if (FI != ForwardRefVals.end()) {
1817 if (FI->second.first->getType() != Inst->getType())
1818 return P.Error(NameLoc, "instruction forward referenced with type '" +
1819 FI->second.first->getType()->getDescription() + "'");
1820 FI->second.first->replaceAllUsesWith(Inst);
1821 delete FI->second.first;
1822 ForwardRefVals.erase(FI);
1825 // Set the name on the instruction.
1826 Inst->setName(NameStr);
1828 if (Inst->getNameStr() != NameStr)
1829 return P.Error(NameLoc, "multiple definition of local value named '" +
1834 /// GetBB - Get a basic block with the specified name or ID, creating a
1835 /// forward reference record if needed.
1836 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
1838 return cast_or_null<BasicBlock>(GetVal(Name,
1839 Type::getLabelTy(F.getContext()), Loc));
1842 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
1843 return cast_or_null<BasicBlock>(GetVal(ID,
1844 Type::getLabelTy(F.getContext()), Loc));
1847 /// DefineBB - Define the specified basic block, which is either named or
1848 /// unnamed. If there is an error, this returns null otherwise it returns
1849 /// the block being defined.
1850 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
1854 BB = GetBB(NumberedVals.size(), Loc);
1856 BB = GetBB(Name, Loc);
1857 if (BB == 0) return 0; // Already diagnosed error.
1859 // Move the block to the end of the function. Forward ref'd blocks are
1860 // inserted wherever they happen to be referenced.
1861 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
1863 // Remove the block from forward ref sets.
1865 ForwardRefValIDs.erase(NumberedVals.size());
1866 NumberedVals.push_back(BB);
1868 // BB forward references are already in the function symbol table.
1869 ForwardRefVals.erase(Name);
1875 //===----------------------------------------------------------------------===//
1877 //===----------------------------------------------------------------------===//
1879 /// ParseValID - Parse an abstract value that doesn't necessarily have a
1880 /// type implied. For example, if we parse "4" we don't know what integer type
1881 /// it has. The value will later be combined with its type and checked for
1883 bool LLParser::ParseValID(ValID &ID) {
1884 ID.Loc = Lex.getLoc();
1885 switch (Lex.getKind()) {
1886 default: return TokError("expected value token");
1887 case lltok::GlobalID: // @42
1888 ID.UIntVal = Lex.getUIntVal();
1889 ID.Kind = ValID::t_GlobalID;
1891 case lltok::GlobalVar: // @foo
1892 ID.StrVal = Lex.getStrVal();
1893 ID.Kind = ValID::t_GlobalName;
1895 case lltok::LocalVarID: // %42
1896 ID.UIntVal = Lex.getUIntVal();
1897 ID.Kind = ValID::t_LocalID;
1899 case lltok::LocalVar: // %foo
1900 case lltok::StringConstant: // "foo" - FIXME: REMOVE IN LLVM 3.0
1901 ID.StrVal = Lex.getStrVal();
1902 ID.Kind = ValID::t_LocalName;
1904 case lltok::exclaim: // !{...} MDNode, !"foo" MDString
1907 if (EatIfPresent(lltok::lbrace)) {
1908 SmallVector<Value*, 16> Elts;
1909 if (ParseMDNodeVector(Elts) ||
1910 ParseToken(lltok::rbrace, "expected end of metadata node"))
1913 ID.MDNodeVal = MDNode::get(Context, Elts.data(), Elts.size());
1914 ID.Kind = ValID::t_MDNode;
1918 // Standalone metadata reference
1919 // !{ ..., !42, ... }
1920 if (Lex.getKind() == lltok::APSInt) {
1921 if (ParseMDNodeID(ID.MDNodeVal)) return true;
1922 ID.Kind = ValID::t_MDNode;
1927 // ::= '!' STRINGCONSTANT
1928 if (ParseMDString(ID.MDStringVal)) return true;
1929 ID.Kind = ValID::t_MDString;
1932 ID.APSIntVal = Lex.getAPSIntVal();
1933 ID.Kind = ValID::t_APSInt;
1935 case lltok::APFloat:
1936 ID.APFloatVal = Lex.getAPFloatVal();
1937 ID.Kind = ValID::t_APFloat;
1939 case lltok::kw_true:
1940 ID.ConstantVal = ConstantInt::getTrue(Context);
1941 ID.Kind = ValID::t_Constant;
1943 case lltok::kw_false:
1944 ID.ConstantVal = ConstantInt::getFalse(Context);
1945 ID.Kind = ValID::t_Constant;
1947 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
1948 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
1949 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
1951 case lltok::lbrace: {
1952 // ValID ::= '{' ConstVector '}'
1954 SmallVector<Constant*, 16> Elts;
1955 if (ParseGlobalValueVector(Elts) ||
1956 ParseToken(lltok::rbrace, "expected end of struct constant"))
1959 ID.ConstantVal = ConstantStruct::get(Context, Elts.data(),
1960 Elts.size(), false);
1961 ID.Kind = ValID::t_Constant;
1965 // ValID ::= '<' ConstVector '>' --> Vector.
1966 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
1968 bool isPackedStruct = EatIfPresent(lltok::lbrace);
1970 SmallVector<Constant*, 16> Elts;
1971 LocTy FirstEltLoc = Lex.getLoc();
1972 if (ParseGlobalValueVector(Elts) ||
1974 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
1975 ParseToken(lltok::greater, "expected end of constant"))
1978 if (isPackedStruct) {
1980 ConstantStruct::get(Context, Elts.data(), Elts.size(), true);
1981 ID.Kind = ValID::t_Constant;
1986 return Error(ID.Loc, "constant vector must not be empty");
1988 if (!Elts[0]->getType()->isInteger() &&
1989 !Elts[0]->getType()->isFloatingPoint())
1990 return Error(FirstEltLoc,
1991 "vector elements must have integer or floating point type");
1993 // Verify that all the vector elements have the same type.
1994 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
1995 if (Elts[i]->getType() != Elts[0]->getType())
1996 return Error(FirstEltLoc,
1997 "vector element #" + utostr(i) +
1998 " is not of type '" + Elts[0]->getType()->getDescription());
2000 ID.ConstantVal = ConstantVector::get(Elts.data(), Elts.size());
2001 ID.Kind = ValID::t_Constant;
2004 case lltok::lsquare: { // Array Constant
2006 SmallVector<Constant*, 16> Elts;
2007 LocTy FirstEltLoc = Lex.getLoc();
2008 if (ParseGlobalValueVector(Elts) ||
2009 ParseToken(lltok::rsquare, "expected end of array constant"))
2012 // Handle empty element.
2014 // Use undef instead of an array because it's inconvenient to determine
2015 // the element type at this point, there being no elements to examine.
2016 ID.Kind = ValID::t_EmptyArray;
2020 if (!Elts[0]->getType()->isFirstClassType())
2021 return Error(FirstEltLoc, "invalid array element type: " +
2022 Elts[0]->getType()->getDescription());
2024 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2026 // Verify all elements are correct type!
2027 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2028 if (Elts[i]->getType() != Elts[0]->getType())
2029 return Error(FirstEltLoc,
2030 "array element #" + utostr(i) +
2031 " is not of type '" +Elts[0]->getType()->getDescription());
2034 ID.ConstantVal = ConstantArray::get(ATy, Elts.data(), Elts.size());
2035 ID.Kind = ValID::t_Constant;
2038 case lltok::kw_c: // c "foo"
2040 ID.ConstantVal = ConstantArray::get(Context, Lex.getStrVal(), false);
2041 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2042 ID.Kind = ValID::t_Constant;
2045 case lltok::kw_asm: {
2046 // ValID ::= 'asm' SideEffect? AlignStack? STRINGCONSTANT ',' STRINGCONSTANT
2047 bool HasSideEffect, AlignStack;
2049 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2050 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2051 ParseStringConstant(ID.StrVal) ||
2052 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2053 ParseToken(lltok::StringConstant, "expected constraint string"))
2055 ID.StrVal2 = Lex.getStrVal();
2056 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1);
2057 ID.Kind = ValID::t_InlineAsm;
2061 case lltok::kw_blockaddress: {
2062 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2066 LocTy FnLoc, LabelLoc;
2068 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2070 ParseToken(lltok::comma, "expected comma in block address expression")||
2071 ParseValID(Label) ||
2072 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2075 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2076 return Error(Fn.Loc, "expected function name in blockaddress");
2077 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2078 return Error(Label.Loc, "expected basic block name in blockaddress");
2080 // Make a global variable as a placeholder for this reference.
2081 GlobalVariable *FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context),
2082 false, GlobalValue::InternalLinkage,
2084 ForwardRefBlockAddresses[Fn].push_back(std::make_pair(Label, FwdRef));
2085 ID.ConstantVal = FwdRef;
2086 ID.Kind = ValID::t_Constant;
2090 case lltok::kw_trunc:
2091 case lltok::kw_zext:
2092 case lltok::kw_sext:
2093 case lltok::kw_fptrunc:
2094 case lltok::kw_fpext:
2095 case lltok::kw_bitcast:
2096 case lltok::kw_uitofp:
2097 case lltok::kw_sitofp:
2098 case lltok::kw_fptoui:
2099 case lltok::kw_fptosi:
2100 case lltok::kw_inttoptr:
2101 case lltok::kw_ptrtoint: {
2102 unsigned Opc = Lex.getUIntVal();
2103 PATypeHolder DestTy(Type::getVoidTy(Context));
2106 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2107 ParseGlobalTypeAndValue(SrcVal) ||
2108 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2109 ParseType(DestTy) ||
2110 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2112 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2113 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2114 SrcVal->getType()->getDescription() + "' to '" +
2115 DestTy->getDescription() + "'");
2116 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2118 ID.Kind = ValID::t_Constant;
2121 case lltok::kw_extractvalue: {
2124 SmallVector<unsigned, 4> Indices;
2125 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2126 ParseGlobalTypeAndValue(Val) ||
2127 ParseIndexList(Indices) ||
2128 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2131 if (!isa<StructType>(Val->getType()) && !isa<ArrayType>(Val->getType()))
2132 return Error(ID.Loc, "extractvalue operand must be array or struct");
2133 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
2135 return Error(ID.Loc, "invalid indices for extractvalue");
2137 ConstantExpr::getExtractValue(Val, Indices.data(), Indices.size());
2138 ID.Kind = ValID::t_Constant;
2141 case lltok::kw_insertvalue: {
2143 Constant *Val0, *Val1;
2144 SmallVector<unsigned, 4> Indices;
2145 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2146 ParseGlobalTypeAndValue(Val0) ||
2147 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2148 ParseGlobalTypeAndValue(Val1) ||
2149 ParseIndexList(Indices) ||
2150 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2152 if (!isa<StructType>(Val0->getType()) && !isa<ArrayType>(Val0->getType()))
2153 return Error(ID.Loc, "extractvalue operand must be array or struct");
2154 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
2156 return Error(ID.Loc, "invalid indices for insertvalue");
2157 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1,
2158 Indices.data(), Indices.size());
2159 ID.Kind = ValID::t_Constant;
2162 case lltok::kw_icmp:
2163 case lltok::kw_fcmp: {
2164 unsigned PredVal, Opc = Lex.getUIntVal();
2165 Constant *Val0, *Val1;
2167 if (ParseCmpPredicate(PredVal, Opc) ||
2168 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2169 ParseGlobalTypeAndValue(Val0) ||
2170 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2171 ParseGlobalTypeAndValue(Val1) ||
2172 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2175 if (Val0->getType() != Val1->getType())
2176 return Error(ID.Loc, "compare operands must have the same type");
2178 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2180 if (Opc == Instruction::FCmp) {
2181 if (!Val0->getType()->isFPOrFPVector())
2182 return Error(ID.Loc, "fcmp requires floating point operands");
2183 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2185 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2186 if (!Val0->getType()->isIntOrIntVector() &&
2187 !isa<PointerType>(Val0->getType()))
2188 return Error(ID.Loc, "icmp requires pointer or integer operands");
2189 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2191 ID.Kind = ValID::t_Constant;
2195 // Binary Operators.
2197 case lltok::kw_fadd:
2199 case lltok::kw_fsub:
2201 case lltok::kw_fmul:
2202 case lltok::kw_udiv:
2203 case lltok::kw_sdiv:
2204 case lltok::kw_fdiv:
2205 case lltok::kw_urem:
2206 case lltok::kw_srem:
2207 case lltok::kw_frem: {
2211 unsigned Opc = Lex.getUIntVal();
2212 Constant *Val0, *Val1;
2214 LocTy ModifierLoc = Lex.getLoc();
2215 if (Opc == Instruction::Add ||
2216 Opc == Instruction::Sub ||
2217 Opc == Instruction::Mul) {
2218 if (EatIfPresent(lltok::kw_nuw))
2220 if (EatIfPresent(lltok::kw_nsw)) {
2222 if (EatIfPresent(lltok::kw_nuw))
2225 } else if (Opc == Instruction::SDiv) {
2226 if (EatIfPresent(lltok::kw_exact))
2229 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2230 ParseGlobalTypeAndValue(Val0) ||
2231 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2232 ParseGlobalTypeAndValue(Val1) ||
2233 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2235 if (Val0->getType() != Val1->getType())
2236 return Error(ID.Loc, "operands of constexpr must have same type");
2237 if (!Val0->getType()->isIntOrIntVector()) {
2239 return Error(ModifierLoc, "nuw only applies to integer operations");
2241 return Error(ModifierLoc, "nsw only applies to integer operations");
2243 // API compatibility: Accept either integer or floating-point types with
2244 // add, sub, and mul.
2245 if (!Val0->getType()->isIntOrIntVector() &&
2246 !Val0->getType()->isFPOrFPVector())
2247 return Error(ID.Loc,"constexpr requires integer, fp, or vector operands");
2249 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2250 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2251 if (Exact) Flags |= SDivOperator::IsExact;
2252 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2254 ID.Kind = ValID::t_Constant;
2258 // Logical Operations
2260 case lltok::kw_lshr:
2261 case lltok::kw_ashr:
2264 case lltok::kw_xor: {
2265 unsigned Opc = Lex.getUIntVal();
2266 Constant *Val0, *Val1;
2268 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2269 ParseGlobalTypeAndValue(Val0) ||
2270 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2271 ParseGlobalTypeAndValue(Val1) ||
2272 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2274 if (Val0->getType() != Val1->getType())
2275 return Error(ID.Loc, "operands of constexpr must have same type");
2276 if (!Val0->getType()->isIntOrIntVector())
2277 return Error(ID.Loc,
2278 "constexpr requires integer or integer vector operands");
2279 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2280 ID.Kind = ValID::t_Constant;
2284 case lltok::kw_getelementptr:
2285 case lltok::kw_shufflevector:
2286 case lltok::kw_insertelement:
2287 case lltok::kw_extractelement:
2288 case lltok::kw_select: {
2289 unsigned Opc = Lex.getUIntVal();
2290 SmallVector<Constant*, 16> Elts;
2291 bool InBounds = false;
2293 if (Opc == Instruction::GetElementPtr)
2294 InBounds = EatIfPresent(lltok::kw_inbounds);
2295 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2296 ParseGlobalValueVector(Elts) ||
2297 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2300 if (Opc == Instruction::GetElementPtr) {
2301 if (Elts.size() == 0 || !isa<PointerType>(Elts[0]->getType()))
2302 return Error(ID.Loc, "getelementptr requires pointer operand");
2304 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(),
2305 (Value**)(Elts.data() + 1),
2307 return Error(ID.Loc, "invalid indices for getelementptr");
2308 ID.ConstantVal = InBounds ?
2309 ConstantExpr::getInBoundsGetElementPtr(Elts[0],
2312 ConstantExpr::getGetElementPtr(Elts[0],
2313 Elts.data() + 1, Elts.size() - 1);
2314 } else if (Opc == Instruction::Select) {
2315 if (Elts.size() != 3)
2316 return Error(ID.Loc, "expected three operands to select");
2317 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2319 return Error(ID.Loc, Reason);
2320 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2321 } else if (Opc == Instruction::ShuffleVector) {
2322 if (Elts.size() != 3)
2323 return Error(ID.Loc, "expected three operands to shufflevector");
2324 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2325 return Error(ID.Loc, "invalid operands to shufflevector");
2327 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2328 } else if (Opc == Instruction::ExtractElement) {
2329 if (Elts.size() != 2)
2330 return Error(ID.Loc, "expected two operands to extractelement");
2331 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2332 return Error(ID.Loc, "invalid extractelement operands");
2333 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2335 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2336 if (Elts.size() != 3)
2337 return Error(ID.Loc, "expected three operands to insertelement");
2338 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2339 return Error(ID.Loc, "invalid insertelement operands");
2341 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2344 ID.Kind = ValID::t_Constant;
2353 /// ParseGlobalValue - Parse a global value with the specified type.
2354 bool LLParser::ParseGlobalValue(const Type *Ty, Constant *&V) {
2357 return ParseValID(ID) ||
2358 ConvertGlobalValIDToValue(Ty, ID, V);
2361 /// ConvertGlobalValIDToValue - Apply a type to a ValID to get a fully resolved
2363 bool LLParser::ConvertGlobalValIDToValue(const Type *Ty, ValID &ID,
2365 if (isa<FunctionType>(Ty))
2366 return Error(ID.Loc, "functions are not values, refer to them as pointers");
2369 default: llvm_unreachable("Unknown ValID!");
2370 case ValID::t_MDNode:
2371 case ValID::t_MDString:
2372 return Error(ID.Loc, "invalid use of metadata");
2373 case ValID::t_LocalID:
2374 case ValID::t_LocalName:
2375 return Error(ID.Loc, "invalid use of function-local name");
2376 case ValID::t_InlineAsm:
2377 return Error(ID.Loc, "inline asm can only be an operand of call/invoke");
2378 case ValID::t_GlobalName:
2379 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
2381 case ValID::t_GlobalID:
2382 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
2384 case ValID::t_APSInt:
2385 if (!isa<IntegerType>(Ty))
2386 return Error(ID.Loc, "integer constant must have integer type");
2387 ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
2388 V = ConstantInt::get(Context, ID.APSIntVal);
2390 case ValID::t_APFloat:
2391 if (!Ty->isFloatingPoint() ||
2392 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
2393 return Error(ID.Loc, "floating point constant invalid for type");
2395 // The lexer has no type info, so builds all float and double FP constants
2396 // as double. Fix this here. Long double does not need this.
2397 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble &&
2400 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
2403 V = ConstantFP::get(Context, ID.APFloatVal);
2405 if (V->getType() != Ty)
2406 return Error(ID.Loc, "floating point constant does not have type '" +
2407 Ty->getDescription() + "'");
2411 if (!isa<PointerType>(Ty))
2412 return Error(ID.Loc, "null must be a pointer type");
2413 V = ConstantPointerNull::get(cast<PointerType>(Ty));
2415 case ValID::t_Undef:
2416 // FIXME: LabelTy should not be a first-class type.
2417 if ((!Ty->isFirstClassType() || Ty->isLabelTy()) &&
2418 !isa<OpaqueType>(Ty))
2419 return Error(ID.Loc, "invalid type for undef constant");
2420 V = UndefValue::get(Ty);
2422 case ValID::t_EmptyArray:
2423 if (!isa<ArrayType>(Ty) || cast<ArrayType>(Ty)->getNumElements() != 0)
2424 return Error(ID.Loc, "invalid empty array initializer");
2425 V = UndefValue::get(Ty);
2428 // FIXME: LabelTy should not be a first-class type.
2429 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2430 return Error(ID.Loc, "invalid type for null constant");
2431 V = Constant::getNullValue(Ty);
2433 case ValID::t_Constant:
2434 if (ID.ConstantVal->getType() != Ty)
2435 return Error(ID.Loc, "constant expression type mismatch");
2441 /// ConvertGlobalOrMetadataValIDToValue - Apply a type to a ValID to get a fully
2442 /// resolved constant or metadata value.
2443 bool LLParser::ConvertGlobalOrMetadataValIDToValue(const Type *Ty, ValID &ID,
2446 case ValID::t_MDNode:
2447 if (!Ty->isMetadataTy())
2448 return Error(ID.Loc, "metadata value must have metadata type");
2451 case ValID::t_MDString:
2452 if (!Ty->isMetadataTy())
2453 return Error(ID.Loc, "metadata value must have metadata type");
2458 if (ConvertGlobalValIDToValue(Ty, ID, C)) return true;
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) {
2502 case ValID::t_LocalID: V = PFS.GetVal(ID.UIntVal, Ty, ID.Loc); break;
2503 case ValID::t_LocalName: V = PFS.GetVal(ID.StrVal, Ty, ID.Loc); break;
2504 case ValID::t_InlineAsm: {
2505 const PointerType *PTy = dyn_cast<PointerType>(Ty);
2506 const FunctionType *FTy =
2507 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
2508 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
2509 return Error(ID.Loc, "invalid type for inline asm constraint string");
2510 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1, ID.UIntVal>>1);
2514 return ConvertGlobalOrMetadataValIDToValue(Ty, ID, V);
2520 bool LLParser::ParseValue(const Type *Ty, Value *&V, PerFunctionState &PFS) {
2523 return ParseValID(ID) ||
2524 ConvertValIDToValue(Ty, ID, V, PFS);
2527 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState &PFS) {
2528 PATypeHolder T(Type::getVoidTy(Context));
2529 return ParseType(T) ||
2530 ParseValue(T, V, PFS);
2533 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
2534 PerFunctionState &PFS) {
2537 if (ParseTypeAndValue(V, PFS)) return true;
2538 if (!isa<BasicBlock>(V))
2539 return Error(Loc, "expected a basic block");
2540 BB = cast<BasicBlock>(V);
2546 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
2547 /// Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
2548 /// OptionalAlign OptGC
2549 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
2550 // Parse the linkage.
2551 LocTy LinkageLoc = Lex.getLoc();
2554 unsigned Visibility, RetAttrs;
2556 PATypeHolder RetType(Type::getVoidTy(Context));
2557 LocTy RetTypeLoc = Lex.getLoc();
2558 if (ParseOptionalLinkage(Linkage) ||
2559 ParseOptionalVisibility(Visibility) ||
2560 ParseOptionalCallingConv(CC) ||
2561 ParseOptionalAttrs(RetAttrs, 1) ||
2562 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
2565 // Verify that the linkage is ok.
2566 switch ((GlobalValue::LinkageTypes)Linkage) {
2567 case GlobalValue::ExternalLinkage:
2568 break; // always ok.
2569 case GlobalValue::DLLImportLinkage:
2570 case GlobalValue::ExternalWeakLinkage:
2572 return Error(LinkageLoc, "invalid linkage for function definition");
2574 case GlobalValue::PrivateLinkage:
2575 case GlobalValue::LinkerPrivateLinkage:
2576 case GlobalValue::InternalLinkage:
2577 case GlobalValue::AvailableExternallyLinkage:
2578 case GlobalValue::LinkOnceAnyLinkage:
2579 case GlobalValue::LinkOnceODRLinkage:
2580 case GlobalValue::WeakAnyLinkage:
2581 case GlobalValue::WeakODRLinkage:
2582 case GlobalValue::DLLExportLinkage:
2584 return Error(LinkageLoc, "invalid linkage for function declaration");
2586 case GlobalValue::AppendingLinkage:
2587 case GlobalValue::GhostLinkage:
2588 case GlobalValue::CommonLinkage:
2589 return Error(LinkageLoc, "invalid function linkage type");
2592 if (!FunctionType::isValidReturnType(RetType) ||
2593 isa<OpaqueType>(RetType))
2594 return Error(RetTypeLoc, "invalid function return type");
2596 LocTy NameLoc = Lex.getLoc();
2598 std::string FunctionName;
2599 if (Lex.getKind() == lltok::GlobalVar) {
2600 FunctionName = Lex.getStrVal();
2601 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
2602 unsigned NameID = Lex.getUIntVal();
2604 if (NameID != NumberedVals.size())
2605 return TokError("function expected to be numbered '%" +
2606 utostr(NumberedVals.size()) + "'");
2608 return TokError("expected function name");
2613 if (Lex.getKind() != lltok::lparen)
2614 return TokError("expected '(' in function argument list");
2616 std::vector<ArgInfo> ArgList;
2619 std::string Section;
2623 if (ParseArgumentList(ArgList, isVarArg, false) ||
2624 ParseOptionalAttrs(FuncAttrs, 2) ||
2625 (EatIfPresent(lltok::kw_section) &&
2626 ParseStringConstant(Section)) ||
2627 ParseOptionalAlignment(Alignment) ||
2628 (EatIfPresent(lltok::kw_gc) &&
2629 ParseStringConstant(GC)))
2632 // If the alignment was parsed as an attribute, move to the alignment field.
2633 if (FuncAttrs & Attribute::Alignment) {
2634 Alignment = Attribute::getAlignmentFromAttrs(FuncAttrs);
2635 FuncAttrs &= ~Attribute::Alignment;
2638 // Okay, if we got here, the function is syntactically valid. Convert types
2639 // and do semantic checks.
2640 std::vector<const Type*> ParamTypeList;
2641 SmallVector<AttributeWithIndex, 8> Attrs;
2642 // FIXME : In 3.0, stop accepting zext, sext and inreg as optional function
2644 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
2645 if (FuncAttrs & ObsoleteFuncAttrs) {
2646 RetAttrs |= FuncAttrs & ObsoleteFuncAttrs;
2647 FuncAttrs &= ~ObsoleteFuncAttrs;
2650 if (RetAttrs != Attribute::None)
2651 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
2653 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2654 ParamTypeList.push_back(ArgList[i].Type);
2655 if (ArgList[i].Attrs != Attribute::None)
2656 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
2659 if (FuncAttrs != Attribute::None)
2660 Attrs.push_back(AttributeWithIndex::get(~0, FuncAttrs));
2662 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
2664 if (PAL.paramHasAttr(1, Attribute::StructRet) && !RetType->isVoidTy())
2665 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
2667 const FunctionType *FT =
2668 FunctionType::get(RetType, ParamTypeList, isVarArg);
2669 const PointerType *PFT = PointerType::getUnqual(FT);
2672 if (!FunctionName.empty()) {
2673 // If this was a definition of a forward reference, remove the definition
2674 // from the forward reference table and fill in the forward ref.
2675 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
2676 ForwardRefVals.find(FunctionName);
2677 if (FRVI != ForwardRefVals.end()) {
2678 Fn = M->getFunction(FunctionName);
2679 ForwardRefVals.erase(FRVI);
2680 } else if ((Fn = M->getFunction(FunctionName))) {
2681 // If this function already exists in the symbol table, then it is
2682 // multiply defined. We accept a few cases for old backwards compat.
2683 // FIXME: Remove this stuff for LLVM 3.0.
2684 if (Fn->getType() != PFT || Fn->getAttributes() != PAL ||
2685 (!Fn->isDeclaration() && isDefine)) {
2686 // If the redefinition has different type or different attributes,
2687 // reject it. If both have bodies, reject it.
2688 return Error(NameLoc, "invalid redefinition of function '" +
2689 FunctionName + "'");
2690 } else if (Fn->isDeclaration()) {
2691 // Make sure to strip off any argument names so we can't get conflicts.
2692 for (Function::arg_iterator AI = Fn->arg_begin(), AE = Fn->arg_end();
2696 } else if (M->getNamedValue(FunctionName)) {
2697 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
2701 // If this is a definition of a forward referenced function, make sure the
2703 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
2704 = ForwardRefValIDs.find(NumberedVals.size());
2705 if (I != ForwardRefValIDs.end()) {
2706 Fn = cast<Function>(I->second.first);
2707 if (Fn->getType() != PFT)
2708 return Error(NameLoc, "type of definition and forward reference of '@" +
2709 utostr(NumberedVals.size()) +"' disagree");
2710 ForwardRefValIDs.erase(I);
2715 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
2716 else // Move the forward-reference to the correct spot in the module.
2717 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
2719 if (FunctionName.empty())
2720 NumberedVals.push_back(Fn);
2722 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
2723 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
2724 Fn->setCallingConv(CC);
2725 Fn->setAttributes(PAL);
2726 Fn->setAlignment(Alignment);
2727 Fn->setSection(Section);
2728 if (!GC.empty()) Fn->setGC(GC.c_str());
2730 // Add all of the arguments we parsed to the function.
2731 Function::arg_iterator ArgIt = Fn->arg_begin();
2732 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
2733 // If we run out of arguments in the Function prototype, exit early.
2734 // FIXME: REMOVE THIS IN LLVM 3.0, this is just for the mismatch case above.
2735 if (ArgIt == Fn->arg_end()) break;
2737 // If the argument has a name, insert it into the argument symbol table.
2738 if (ArgList[i].Name.empty()) continue;
2740 // Set the name, if it conflicted, it will be auto-renamed.
2741 ArgIt->setName(ArgList[i].Name);
2743 if (ArgIt->getNameStr() != ArgList[i].Name)
2744 return Error(ArgList[i].Loc, "redefinition of argument '%" +
2745 ArgList[i].Name + "'");
2752 /// ParseFunctionBody
2753 /// ::= '{' BasicBlock+ '}'
2754 /// ::= 'begin' BasicBlock+ 'end' // FIXME: remove in LLVM 3.0
2756 bool LLParser::ParseFunctionBody(Function &Fn) {
2757 if (Lex.getKind() != lltok::lbrace && Lex.getKind() != lltok::kw_begin)
2758 return TokError("expected '{' in function body");
2759 Lex.Lex(); // eat the {.
2761 int FunctionNumber = -1;
2762 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
2764 PerFunctionState PFS(*this, Fn, FunctionNumber);
2766 while (Lex.getKind() != lltok::rbrace && Lex.getKind() != lltok::kw_end)
2767 if (ParseBasicBlock(PFS)) return true;
2772 // Verify function is ok.
2773 return PFS.FinishFunction();
2777 /// ::= LabelStr? Instruction*
2778 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
2779 // If this basic block starts out with a name, remember it.
2781 LocTy NameLoc = Lex.getLoc();
2782 if (Lex.getKind() == lltok::LabelStr) {
2783 Name = Lex.getStrVal();
2787 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
2788 if (BB == 0) return true;
2790 std::string NameStr;
2792 // Parse the instructions in this block until we get a terminator.
2794 SmallVector<std::pair<unsigned, MDNode *>, 4> MetadataOnInst;
2796 // This instruction may have three possibilities for a name: a) none
2797 // specified, b) name specified "%foo =", c) number specified: "%4 =".
2798 LocTy NameLoc = Lex.getLoc();
2802 if (Lex.getKind() == lltok::LocalVarID) {
2803 NameID = Lex.getUIntVal();
2805 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
2807 } else if (Lex.getKind() == lltok::LocalVar ||
2808 // FIXME: REMOVE IN LLVM 3.0
2809 Lex.getKind() == lltok::StringConstant) {
2810 NameStr = Lex.getStrVal();
2812 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
2816 switch (ParseInstruction(Inst, BB, PFS)) {
2817 default: assert(0 && "Unknown ParseInstruction result!");
2818 case InstError: return true;
2820 // With a normal result, we check to see if the instruction is followed by
2821 // a comma and metadata.
2822 if (EatIfPresent(lltok::comma))
2823 if (ParseInstructionMetadata(MetadataOnInst))
2826 case InstExtraComma:
2827 // If the instruction parser ate an extra comma at the end of it, it
2828 // *must* be followed by metadata.
2829 if (ParseInstructionMetadata(MetadataOnInst))
2834 // Set metadata attached with this instruction.
2835 for (unsigned i = 0, e = MetadataOnInst.size(); i != e; ++i)
2836 Inst->setMetadata(MetadataOnInst[i].first, MetadataOnInst[i].second);
2837 MetadataOnInst.clear();
2839 BB->getInstList().push_back(Inst);
2841 // Set the name on the instruction.
2842 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
2843 } while (!isa<TerminatorInst>(Inst));
2848 //===----------------------------------------------------------------------===//
2849 // Instruction Parsing.
2850 //===----------------------------------------------------------------------===//
2852 /// ParseInstruction - Parse one of the many different instructions.
2854 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
2855 PerFunctionState &PFS) {
2856 lltok::Kind Token = Lex.getKind();
2857 if (Token == lltok::Eof)
2858 return TokError("found end of file when expecting more instructions");
2859 LocTy Loc = Lex.getLoc();
2860 unsigned KeywordVal = Lex.getUIntVal();
2861 Lex.Lex(); // Eat the keyword.
2864 default: return Error(Loc, "expected instruction opcode");
2865 // Terminator Instructions.
2866 case lltok::kw_unwind: Inst = new UnwindInst(Context); return false;
2867 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
2868 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
2869 case lltok::kw_br: return ParseBr(Inst, PFS);
2870 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
2871 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
2872 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
2873 // Binary Operators.
2876 case lltok::kw_mul: {
2879 LocTy ModifierLoc = Lex.getLoc();
2880 if (EatIfPresent(lltok::kw_nuw))
2882 if (EatIfPresent(lltok::kw_nsw)) {
2884 if (EatIfPresent(lltok::kw_nuw))
2887 // API compatibility: Accept either integer or floating-point types.
2888 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 0);
2890 if (!Inst->getType()->isIntOrIntVector()) {
2892 return Error(ModifierLoc, "nuw only applies to integer operations");
2894 return Error(ModifierLoc, "nsw only applies to integer operations");
2897 cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
2899 cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
2903 case lltok::kw_fadd:
2904 case lltok::kw_fsub:
2905 case lltok::kw_fmul: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
2907 case lltok::kw_sdiv: {
2909 if (EatIfPresent(lltok::kw_exact))
2911 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 1);
2914 cast<BinaryOperator>(Inst)->setIsExact(true);
2918 case lltok::kw_udiv:
2919 case lltok::kw_urem:
2920 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
2921 case lltok::kw_fdiv:
2922 case lltok::kw_frem: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
2924 case lltok::kw_lshr:
2925 case lltok::kw_ashr:
2928 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
2929 case lltok::kw_icmp:
2930 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
2932 case lltok::kw_trunc:
2933 case lltok::kw_zext:
2934 case lltok::kw_sext:
2935 case lltok::kw_fptrunc:
2936 case lltok::kw_fpext:
2937 case lltok::kw_bitcast:
2938 case lltok::kw_uitofp:
2939 case lltok::kw_sitofp:
2940 case lltok::kw_fptoui:
2941 case lltok::kw_fptosi:
2942 case lltok::kw_inttoptr:
2943 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
2945 case lltok::kw_select: return ParseSelect(Inst, PFS);
2946 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
2947 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
2948 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
2949 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
2950 case lltok::kw_phi: return ParsePHI(Inst, PFS);
2951 case lltok::kw_call: return ParseCall(Inst, PFS, false);
2952 case lltok::kw_tail: return ParseCall(Inst, PFS, true);
2954 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
2955 case lltok::kw_malloc: return ParseAlloc(Inst, PFS, BB, false);
2956 case lltok::kw_free: return ParseFree(Inst, PFS, BB);
2957 case lltok::kw_load: return ParseLoad(Inst, PFS, false);
2958 case lltok::kw_store: return ParseStore(Inst, PFS, false);
2959 case lltok::kw_volatile:
2960 if (EatIfPresent(lltok::kw_load))
2961 return ParseLoad(Inst, PFS, true);
2962 else if (EatIfPresent(lltok::kw_store))
2963 return ParseStore(Inst, PFS, true);
2965 return TokError("expected 'load' or 'store'");
2966 case lltok::kw_getresult: return ParseGetResult(Inst, PFS);
2967 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
2968 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
2969 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
2973 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
2974 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
2975 if (Opc == Instruction::FCmp) {
2976 switch (Lex.getKind()) {
2977 default: TokError("expected fcmp predicate (e.g. 'oeq')");
2978 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
2979 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
2980 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
2981 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
2982 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
2983 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
2984 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
2985 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
2986 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
2987 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
2988 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
2989 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
2990 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
2991 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
2992 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
2993 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
2996 switch (Lex.getKind()) {
2997 default: TokError("expected icmp predicate (e.g. 'eq')");
2998 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
2999 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
3000 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
3001 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
3002 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
3003 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
3004 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
3005 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
3006 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
3007 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3014 //===----------------------------------------------------------------------===//
3015 // Terminator Instructions.
3016 //===----------------------------------------------------------------------===//
3018 /// ParseRet - Parse a return instruction.
3019 /// ::= 'ret' void (',' !dbg, !1)*
3020 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
3021 /// ::= 'ret' TypeAndValue (',' TypeAndValue)+ (',' !dbg, !1)*
3022 /// [[obsolete: LLVM 3.0]]
3023 int LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3024 PerFunctionState &PFS) {
3025 PATypeHolder Ty(Type::getVoidTy(Context));
3026 if (ParseType(Ty, true /*void allowed*/)) return true;
3028 if (Ty->isVoidTy()) {
3029 Inst = ReturnInst::Create(Context);
3034 if (ParseValue(Ty, RV, PFS)) return true;
3036 bool ExtraComma = false;
3037 if (EatIfPresent(lltok::comma)) {
3038 // Parse optional custom metadata, e.g. !dbg
3039 if (Lex.getKind() == lltok::MetadataVar) {
3042 // The normal case is one return value.
3043 // FIXME: LLVM 3.0 remove MRV support for 'ret i32 1, i32 2', requiring
3044 // use of 'ret {i32,i32} {i32 1, i32 2}'
3045 SmallVector<Value*, 8> RVs;
3049 // If optional custom metadata, e.g. !dbg is seen then this is the
3051 if (Lex.getKind() == lltok::MetadataVar)
3053 if (ParseTypeAndValue(RV, PFS)) return true;
3055 } while (EatIfPresent(lltok::comma));
3057 RV = UndefValue::get(PFS.getFunction().getReturnType());
3058 for (unsigned i = 0, e = RVs.size(); i != e; ++i) {
3059 Instruction *I = InsertValueInst::Create(RV, RVs[i], i, "mrv");
3060 BB->getInstList().push_back(I);
3066 Inst = ReturnInst::Create(Context, RV);
3067 return ExtraComma ? InstExtraComma : InstNormal;
3072 /// ::= 'br' TypeAndValue
3073 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3074 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
3077 BasicBlock *Op1, *Op2;
3078 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
3080 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
3081 Inst = BranchInst::Create(BB);
3085 if (Op0->getType() != Type::getInt1Ty(Context))
3086 return Error(Loc, "branch condition must have 'i1' type");
3088 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
3089 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
3090 ParseToken(lltok::comma, "expected ',' after true destination") ||
3091 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
3094 Inst = BranchInst::Create(Op1, Op2, Op0);
3100 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
3102 /// ::= (TypeAndValue ',' TypeAndValue)*
3103 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
3104 LocTy CondLoc, BBLoc;
3106 BasicBlock *DefaultBB;
3107 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
3108 ParseToken(lltok::comma, "expected ',' after switch condition") ||
3109 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
3110 ParseToken(lltok::lsquare, "expected '[' with switch table"))
3113 if (!isa<IntegerType>(Cond->getType()))
3114 return Error(CondLoc, "switch condition must have integer type");
3116 // Parse the jump table pairs.
3117 SmallPtrSet<Value*, 32> SeenCases;
3118 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
3119 while (Lex.getKind() != lltok::rsquare) {
3123 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
3124 ParseToken(lltok::comma, "expected ',' after case value") ||
3125 ParseTypeAndBasicBlock(DestBB, PFS))
3128 if (!SeenCases.insert(Constant))
3129 return Error(CondLoc, "duplicate case value in switch");
3130 if (!isa<ConstantInt>(Constant))
3131 return Error(CondLoc, "case value is not a constant integer");
3133 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
3136 Lex.Lex(); // Eat the ']'.
3138 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
3139 for (unsigned i = 0, e = Table.size(); i != e; ++i)
3140 SI->addCase(Table[i].first, Table[i].second);
3147 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
3148 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
3151 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
3152 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
3153 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
3156 if (!isa<PointerType>(Address->getType()))
3157 return Error(AddrLoc, "indirectbr address must have pointer type");
3159 // Parse the destination list.
3160 SmallVector<BasicBlock*, 16> DestList;
3162 if (Lex.getKind() != lltok::rsquare) {
3164 if (ParseTypeAndBasicBlock(DestBB, PFS))
3166 DestList.push_back(DestBB);
3168 while (EatIfPresent(lltok::comma)) {
3169 if (ParseTypeAndBasicBlock(DestBB, PFS))
3171 DestList.push_back(DestBB);
3175 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
3178 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
3179 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
3180 IBI->addDestination(DestList[i]);
3187 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3188 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3189 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3190 LocTy CallLoc = Lex.getLoc();
3191 unsigned RetAttrs, FnAttrs;
3193 PATypeHolder RetType(Type::getVoidTy(Context));
3196 SmallVector<ParamInfo, 16> ArgList;
3198 BasicBlock *NormalBB, *UnwindBB;
3199 if (ParseOptionalCallingConv(CC) ||
3200 ParseOptionalAttrs(RetAttrs, 1) ||
3201 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3202 ParseValID(CalleeID) ||
3203 ParseParameterList(ArgList, PFS) ||
3204 ParseOptionalAttrs(FnAttrs, 2) ||
3205 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3206 ParseTypeAndBasicBlock(NormalBB, PFS) ||
3207 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3208 ParseTypeAndBasicBlock(UnwindBB, PFS))
3211 // If RetType is a non-function pointer type, then this is the short syntax
3212 // for the call, which means that RetType is just the return type. Infer the
3213 // rest of the function argument types from the arguments that are present.
3214 const PointerType *PFTy = 0;
3215 const FunctionType *Ty = 0;
3216 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3217 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3218 // Pull out the types of all of the arguments...
3219 std::vector<const Type*> ParamTypes;
3220 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3221 ParamTypes.push_back(ArgList[i].V->getType());
3223 if (!FunctionType::isValidReturnType(RetType))
3224 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3226 Ty = FunctionType::get(RetType, ParamTypes, false);
3227 PFTy = PointerType::getUnqual(Ty);
3230 // Look up the callee.
3232 if (ConvertValIDToValue(PFTy, CalleeID, Callee, PFS)) return true;
3234 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
3235 // function attributes.
3236 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
3237 if (FnAttrs & ObsoleteFuncAttrs) {
3238 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
3239 FnAttrs &= ~ObsoleteFuncAttrs;
3242 // Set up the Attributes for the function.
3243 SmallVector<AttributeWithIndex, 8> Attrs;
3244 if (RetAttrs != Attribute::None)
3245 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3247 SmallVector<Value*, 8> Args;
3249 // Loop through FunctionType's arguments and ensure they are specified
3250 // correctly. Also, gather any parameter attributes.
3251 FunctionType::param_iterator I = Ty->param_begin();
3252 FunctionType::param_iterator E = Ty->param_end();
3253 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3254 const Type *ExpectedTy = 0;
3257 } else if (!Ty->isVarArg()) {
3258 return Error(ArgList[i].Loc, "too many arguments specified");
3261 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3262 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3263 ExpectedTy->getDescription() + "'");
3264 Args.push_back(ArgList[i].V);
3265 if (ArgList[i].Attrs != Attribute::None)
3266 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3270 return Error(CallLoc, "not enough parameters specified for call");
3272 if (FnAttrs != Attribute::None)
3273 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3275 // Finish off the Attributes and check them
3276 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3278 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB,
3279 Args.begin(), Args.end());
3280 II->setCallingConv(CC);
3281 II->setAttributes(PAL);
3288 //===----------------------------------------------------------------------===//
3289 // Binary Operators.
3290 //===----------------------------------------------------------------------===//
3293 /// ::= ArithmeticOps TypeAndValue ',' Value
3295 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3296 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3297 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3298 unsigned Opc, unsigned OperandType) {
3299 LocTy Loc; Value *LHS, *RHS;
3300 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3301 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3302 ParseValue(LHS->getType(), RHS, PFS))
3306 switch (OperandType) {
3307 default: llvm_unreachable("Unknown operand type!");
3308 case 0: // int or FP.
3309 Valid = LHS->getType()->isIntOrIntVector() ||
3310 LHS->getType()->isFPOrFPVector();
3312 case 1: Valid = LHS->getType()->isIntOrIntVector(); break;
3313 case 2: Valid = LHS->getType()->isFPOrFPVector(); break;
3317 return Error(Loc, "invalid operand type for instruction");
3319 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3324 /// ::= ArithmeticOps TypeAndValue ',' Value {
3325 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3327 LocTy Loc; Value *LHS, *RHS;
3328 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3329 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3330 ParseValue(LHS->getType(), RHS, PFS))
3333 if (!LHS->getType()->isIntOrIntVector())
3334 return Error(Loc,"instruction requires integer or integer vector operands");
3336 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3342 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3343 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3344 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3346 // Parse the integer/fp comparison predicate.
3350 if (ParseCmpPredicate(Pred, Opc) ||
3351 ParseTypeAndValue(LHS, Loc, PFS) ||
3352 ParseToken(lltok::comma, "expected ',' after compare value") ||
3353 ParseValue(LHS->getType(), RHS, PFS))
3356 if (Opc == Instruction::FCmp) {
3357 if (!LHS->getType()->isFPOrFPVector())
3358 return Error(Loc, "fcmp requires floating point operands");
3359 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3361 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
3362 if (!LHS->getType()->isIntOrIntVector() &&
3363 !isa<PointerType>(LHS->getType()))
3364 return Error(Loc, "icmp requires integer operands");
3365 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3370 //===----------------------------------------------------------------------===//
3371 // Other Instructions.
3372 //===----------------------------------------------------------------------===//
3376 /// ::= CastOpc TypeAndValue 'to' Type
3377 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
3379 LocTy Loc; Value *Op;
3380 PATypeHolder DestTy(Type::getVoidTy(Context));
3381 if (ParseTypeAndValue(Op, Loc, PFS) ||
3382 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
3386 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
3387 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
3388 return Error(Loc, "invalid cast opcode for cast from '" +
3389 Op->getType()->getDescription() + "' to '" +
3390 DestTy->getDescription() + "'");
3392 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
3397 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3398 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
3400 Value *Op0, *Op1, *Op2;
3401 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3402 ParseToken(lltok::comma, "expected ',' after select condition") ||
3403 ParseTypeAndValue(Op1, PFS) ||
3404 ParseToken(lltok::comma, "expected ',' after select value") ||
3405 ParseTypeAndValue(Op2, PFS))
3408 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
3409 return Error(Loc, Reason);
3411 Inst = SelectInst::Create(Op0, Op1, Op2);
3416 /// ::= 'va_arg' TypeAndValue ',' Type
3417 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
3419 PATypeHolder EltTy(Type::getVoidTy(Context));
3421 if (ParseTypeAndValue(Op, PFS) ||
3422 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
3423 ParseType(EltTy, TypeLoc))
3426 if (!EltTy->isFirstClassType())
3427 return Error(TypeLoc, "va_arg requires operand with first class type");
3429 Inst = new VAArgInst(Op, EltTy);
3433 /// ParseExtractElement
3434 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
3435 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
3438 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3439 ParseToken(lltok::comma, "expected ',' after extract value") ||
3440 ParseTypeAndValue(Op1, PFS))
3443 if (!ExtractElementInst::isValidOperands(Op0, Op1))
3444 return Error(Loc, "invalid extractelement operands");
3446 Inst = ExtractElementInst::Create(Op0, Op1);
3450 /// ParseInsertElement
3451 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3452 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
3454 Value *Op0, *Op1, *Op2;
3455 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3456 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3457 ParseTypeAndValue(Op1, PFS) ||
3458 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3459 ParseTypeAndValue(Op2, PFS))
3462 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
3463 return Error(Loc, "invalid insertelement operands");
3465 Inst = InsertElementInst::Create(Op0, Op1, Op2);
3469 /// ParseShuffleVector
3470 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3471 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
3473 Value *Op0, *Op1, *Op2;
3474 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3475 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
3476 ParseTypeAndValue(Op1, PFS) ||
3477 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
3478 ParseTypeAndValue(Op2, PFS))
3481 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
3482 return Error(Loc, "invalid extractelement operands");
3484 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
3489 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
3490 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
3491 PATypeHolder Ty(Type::getVoidTy(Context));
3493 LocTy TypeLoc = Lex.getLoc();
3495 if (ParseType(Ty) ||
3496 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3497 ParseValue(Ty, Op0, PFS) ||
3498 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3499 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3500 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3503 bool AteExtraComma = false;
3504 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
3506 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
3508 if (!EatIfPresent(lltok::comma))
3511 if (Lex.getKind() == lltok::MetadataVar) {
3512 AteExtraComma = true;
3516 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3517 ParseValue(Ty, Op0, PFS) ||
3518 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3519 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3520 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3524 if (!Ty->isFirstClassType())
3525 return Error(TypeLoc, "phi node must have first class type");
3527 PHINode *PN = PHINode::Create(Ty);
3528 PN->reserveOperandSpace(PHIVals.size());
3529 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
3530 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
3532 return AteExtraComma ? InstExtraComma : InstNormal;
3536 /// ::= 'tail'? 'call' OptionalCallingConv OptionalAttrs Type Value
3537 /// ParameterList OptionalAttrs
3538 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
3540 unsigned RetAttrs, FnAttrs;
3542 PATypeHolder RetType(Type::getVoidTy(Context));
3545 SmallVector<ParamInfo, 16> ArgList;
3546 LocTy CallLoc = Lex.getLoc();
3548 if ((isTail && ParseToken(lltok::kw_call, "expected 'tail call'")) ||
3549 ParseOptionalCallingConv(CC) ||
3550 ParseOptionalAttrs(RetAttrs, 1) ||
3551 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3552 ParseValID(CalleeID) ||
3553 ParseParameterList(ArgList, PFS) ||
3554 ParseOptionalAttrs(FnAttrs, 2))
3557 // If RetType is a non-function pointer type, then this is the short syntax
3558 // for the call, which means that RetType is just the return type. Infer the
3559 // rest of the function argument types from the arguments that are present.
3560 const PointerType *PFTy = 0;
3561 const FunctionType *Ty = 0;
3562 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3563 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3564 // Pull out the types of all of the arguments...
3565 std::vector<const Type*> ParamTypes;
3566 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3567 ParamTypes.push_back(ArgList[i].V->getType());
3569 if (!FunctionType::isValidReturnType(RetType))
3570 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3572 Ty = FunctionType::get(RetType, ParamTypes, false);
3573 PFTy = PointerType::getUnqual(Ty);
3576 // Look up the callee.
3578 if (ConvertValIDToValue(PFTy, CalleeID, Callee, PFS)) return true;
3580 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
3581 // function attributes.
3582 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
3583 if (FnAttrs & ObsoleteFuncAttrs) {
3584 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
3585 FnAttrs &= ~ObsoleteFuncAttrs;
3588 // Set up the Attributes for the function.
3589 SmallVector<AttributeWithIndex, 8> Attrs;
3590 if (RetAttrs != Attribute::None)
3591 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3593 SmallVector<Value*, 8> Args;
3595 // Loop through FunctionType's arguments and ensure they are specified
3596 // correctly. Also, gather any parameter attributes.
3597 FunctionType::param_iterator I = Ty->param_begin();
3598 FunctionType::param_iterator E = Ty->param_end();
3599 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3600 const Type *ExpectedTy = 0;
3603 } else if (!Ty->isVarArg()) {
3604 return Error(ArgList[i].Loc, "too many arguments specified");
3607 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3608 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3609 ExpectedTy->getDescription() + "'");
3610 Args.push_back(ArgList[i].V);
3611 if (ArgList[i].Attrs != Attribute::None)
3612 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3616 return Error(CallLoc, "not enough parameters specified for call");
3618 if (FnAttrs != Attribute::None)
3619 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3621 // Finish off the Attributes and check them
3622 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3624 CallInst *CI = CallInst::Create(Callee, Args.begin(), Args.end());
3625 CI->setTailCall(isTail);
3626 CI->setCallingConv(CC);
3627 CI->setAttributes(PAL);
3632 //===----------------------------------------------------------------------===//
3633 // Memory Instructions.
3634 //===----------------------------------------------------------------------===//
3637 /// ::= 'malloc' Type (',' TypeAndValue)? (',' OptionalInfo)?
3638 /// ::= 'alloca' Type (',' TypeAndValue)? (',' OptionalInfo)?
3639 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS,
3640 BasicBlock* BB, bool isAlloca) {
3641 PATypeHolder Ty(Type::getVoidTy(Context));
3644 unsigned Alignment = 0;
3645 if (ParseType(Ty)) return true;
3647 bool AteExtraComma = false;
3648 if (EatIfPresent(lltok::comma)) {
3649 if (Lex.getKind() == lltok::kw_align) {
3650 if (ParseOptionalAlignment(Alignment)) return true;
3651 } else if (Lex.getKind() == lltok::MetadataVar) {
3652 AteExtraComma = true;
3654 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
3655 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3660 if (Size && Size->getType() != Type::getInt32Ty(Context))
3661 return Error(SizeLoc, "element count must be i32");
3664 Inst = new AllocaInst(Ty, Size, Alignment);
3665 return AteExtraComma ? InstExtraComma : InstNormal;
3668 // Autoupgrade old malloc instruction to malloc call.
3669 // FIXME: Remove in LLVM 3.0.
3670 const Type *IntPtrTy = Type::getInt32Ty(Context);
3671 Constant *AllocSize = ConstantExpr::getSizeOf(Ty);
3672 AllocSize = ConstantExpr::getTruncOrBitCast(AllocSize, IntPtrTy);
3674 // Prototype malloc as "void *(int32)".
3675 // This function is renamed as "malloc" in ValidateEndOfModule().
3676 MallocF = cast<Function>(
3677 M->getOrInsertFunction("", Type::getInt8PtrTy(Context), IntPtrTy, NULL));
3678 Inst = CallInst::CreateMalloc(BB, IntPtrTy, Ty, AllocSize, Size, MallocF);
3679 return AteExtraComma ? InstExtraComma : InstNormal;
3683 /// ::= 'free' TypeAndValue
3684 bool LLParser::ParseFree(Instruction *&Inst, PerFunctionState &PFS,
3686 Value *Val; LocTy Loc;
3687 if (ParseTypeAndValue(Val, Loc, PFS)) return true;
3688 if (!isa<PointerType>(Val->getType()))
3689 return Error(Loc, "operand to free must be a pointer");
3690 Inst = CallInst::CreateFree(Val, BB);
3695 /// ::= 'volatile'? 'load' TypeAndValue (',' OptionalInfo)?
3696 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS,
3698 Value *Val; LocTy Loc;
3699 unsigned Alignment = 0;
3700 bool AteExtraComma = false;
3701 if (ParseTypeAndValue(Val, Loc, PFS) ||
3702 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3705 if (!isa<PointerType>(Val->getType()) ||
3706 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
3707 return Error(Loc, "load operand must be a pointer to a first class type");
3709 Inst = new LoadInst(Val, "", isVolatile, Alignment);
3710 return AteExtraComma ? InstExtraComma : InstNormal;
3714 /// ::= 'volatile'? 'store' TypeAndValue ',' TypeAndValue (',' 'align' i32)?
3715 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS,
3717 Value *Val, *Ptr; LocTy Loc, PtrLoc;
3718 unsigned Alignment = 0;
3719 bool AteExtraComma = false;
3720 if (ParseTypeAndValue(Val, Loc, PFS) ||
3721 ParseToken(lltok::comma, "expected ',' after store operand") ||
3722 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
3723 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3726 if (!isa<PointerType>(Ptr->getType()))
3727 return Error(PtrLoc, "store operand must be a pointer");
3728 if (!Val->getType()->isFirstClassType())
3729 return Error(Loc, "store operand must be a first class value");
3730 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
3731 return Error(Loc, "stored value and pointer type do not match");
3733 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment);
3734 return AteExtraComma ? InstExtraComma : InstNormal;
3738 /// ::= 'getresult' TypeAndValue ',' i32
3739 /// FIXME: Remove support for getresult in LLVM 3.0
3740 bool LLParser::ParseGetResult(Instruction *&Inst, PerFunctionState &PFS) {
3741 Value *Val; LocTy ValLoc, EltLoc;
3743 if (ParseTypeAndValue(Val, ValLoc, PFS) ||
3744 ParseToken(lltok::comma, "expected ',' after getresult operand") ||
3745 ParseUInt32(Element, EltLoc))
3748 if (!isa<StructType>(Val->getType()) && !isa<ArrayType>(Val->getType()))
3749 return Error(ValLoc, "getresult inst requires an aggregate operand");
3750 if (!ExtractValueInst::getIndexedType(Val->getType(), Element))
3751 return Error(EltLoc, "invalid getresult index for value");
3752 Inst = ExtractValueInst::Create(Val, Element);
3756 /// ParseGetElementPtr
3757 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
3758 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
3759 Value *Ptr, *Val; LocTy Loc, EltLoc;
3761 bool InBounds = EatIfPresent(lltok::kw_inbounds);
3763 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
3765 if (!isa<PointerType>(Ptr->getType()))
3766 return Error(Loc, "base of getelementptr must be a pointer");
3768 SmallVector<Value*, 16> Indices;
3769 bool AteExtraComma = false;
3770 while (EatIfPresent(lltok::comma)) {
3771 if (Lex.getKind() == lltok::MetadataVar) {
3772 AteExtraComma = true;
3775 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
3776 if (!isa<IntegerType>(Val->getType()))
3777 return Error(EltLoc, "getelementptr index must be an integer");
3778 Indices.push_back(Val);
3781 if (!GetElementPtrInst::getIndexedType(Ptr->getType(),
3782 Indices.begin(), Indices.end()))
3783 return Error(Loc, "invalid getelementptr indices");
3784 Inst = GetElementPtrInst::Create(Ptr, Indices.begin(), Indices.end());
3786 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
3787 return AteExtraComma ? InstExtraComma : InstNormal;
3790 /// ParseExtractValue
3791 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
3792 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
3793 Value *Val; LocTy Loc;
3794 SmallVector<unsigned, 4> Indices;
3796 if (ParseTypeAndValue(Val, Loc, PFS) ||
3797 ParseIndexList(Indices, AteExtraComma))
3800 if (!isa<StructType>(Val->getType()) && !isa<ArrayType>(Val->getType()))
3801 return Error(Loc, "extractvalue operand must be array or struct");
3803 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
3805 return Error(Loc, "invalid indices for extractvalue");
3806 Inst = ExtractValueInst::Create(Val, Indices.begin(), Indices.end());
3807 return AteExtraComma ? InstExtraComma : InstNormal;
3810 /// ParseInsertValue
3811 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
3812 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
3813 Value *Val0, *Val1; LocTy Loc0, Loc1;
3814 SmallVector<unsigned, 4> Indices;
3816 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
3817 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
3818 ParseTypeAndValue(Val1, Loc1, PFS) ||
3819 ParseIndexList(Indices, AteExtraComma))
3822 if (!isa<StructType>(Val0->getType()) && !isa<ArrayType>(Val0->getType()))
3823 return Error(Loc0, "extractvalue operand must be array or struct");
3825 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
3827 return Error(Loc0, "invalid indices for insertvalue");
3828 Inst = InsertValueInst::Create(Val0, Val1, Indices.begin(), Indices.end());
3829 return AteExtraComma ? InstExtraComma : InstNormal;
3832 //===----------------------------------------------------------------------===//
3833 // Embedded metadata.
3834 //===----------------------------------------------------------------------===//
3836 /// ParseMDNodeVector
3837 /// ::= Element (',' Element)*
3839 /// ::= 'null' | TypeAndValue
3840 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts) {
3842 // Null is a special case since it is typeless.
3843 if (EatIfPresent(lltok::kw_null)) {
3849 PATypeHolder Ty(Type::getVoidTy(Context));
3851 if (ParseType(Ty) || ParseValID(ID) ||
3852 ConvertGlobalOrMetadataValIDToValue(Ty, ID, V))
3856 } while (EatIfPresent(lltok::comma));