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<MDNode *, 8> Elts;
515 // Null is a special case since it is typeless.
516 if (EatIfPresent(lltok::kw_null)) {
521 if (ParseToken(lltok::exclaim, "Expected '!' here"))
525 if (ParseMDNodeID(N)) return true;
527 } while (EatIfPresent(lltok::comma));
529 if (ParseToken(lltok::rbrace, "expected end of metadata node"))
532 NamedMDNode::Create(Context, Name, Elts.data(), Elts.size(), M);
536 /// ParseStandaloneMetadata:
538 bool LLParser::ParseStandaloneMetadata() {
539 assert(Lex.getKind() == lltok::exclaim);
541 unsigned MetadataID = 0;
544 PATypeHolder Ty(Type::getVoidTy(Context));
545 SmallVector<Value *, 16> Elts;
546 if (ParseUInt32(MetadataID) ||
547 ParseToken(lltok::equal, "expected '=' here") ||
548 ParseType(Ty, TyLoc) ||
549 ParseToken(lltok::exclaim, "Expected '!' here") ||
550 ParseToken(lltok::lbrace, "Expected '{' here") ||
551 ParseMDNodeVector(Elts) ||
552 ParseToken(lltok::rbrace, "expected end of metadata node"))
555 MDNode *Init = MDNode::get(Context, Elts.data(), Elts.size());
557 // See if this was forward referenced, if so, handle it.
558 std::map<unsigned, std::pair<TrackingVH<MDNode>, LocTy> >::iterator
559 FI = ForwardRefMDNodes.find(MetadataID);
560 if (FI != ForwardRefMDNodes.end()) {
561 FI->second.first->replaceAllUsesWith(Init);
562 ForwardRefMDNodes.erase(FI);
564 assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work");
566 if (MetadataID >= NumberedMetadata.size())
567 NumberedMetadata.resize(MetadataID+1);
569 if (NumberedMetadata[MetadataID] != 0)
570 return TokError("Metadata id is already used");
571 NumberedMetadata[MetadataID] = Init;
578 /// ::= GlobalVar '=' OptionalVisibility 'alias' OptionalLinkage Aliasee
581 /// ::= 'bitcast' '(' TypeAndValue 'to' Type ')'
582 /// ::= 'getelementptr' 'inbounds'? '(' ... ')'
584 /// Everything through visibility has already been parsed.
586 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc,
587 unsigned Visibility) {
588 assert(Lex.getKind() == lltok::kw_alias);
591 LocTy LinkageLoc = Lex.getLoc();
592 if (ParseOptionalLinkage(Linkage))
595 if (Linkage != GlobalValue::ExternalLinkage &&
596 Linkage != GlobalValue::WeakAnyLinkage &&
597 Linkage != GlobalValue::WeakODRLinkage &&
598 Linkage != GlobalValue::InternalLinkage &&
599 Linkage != GlobalValue::PrivateLinkage &&
600 Linkage != GlobalValue::LinkerPrivateLinkage)
601 return Error(LinkageLoc, "invalid linkage type for alias");
604 LocTy AliaseeLoc = Lex.getLoc();
605 if (Lex.getKind() != lltok::kw_bitcast &&
606 Lex.getKind() != lltok::kw_getelementptr) {
607 if (ParseGlobalTypeAndValue(Aliasee)) return true;
609 // The bitcast dest type is not present, it is implied by the dest type.
611 if (ParseValID(ID)) return true;
612 if (ID.Kind != ValID::t_Constant)
613 return Error(AliaseeLoc, "invalid aliasee");
614 Aliasee = ID.ConstantVal;
617 if (!isa<PointerType>(Aliasee->getType()))
618 return Error(AliaseeLoc, "alias must have pointer type");
620 // Okay, create the alias but do not insert it into the module yet.
621 GlobalAlias* GA = new GlobalAlias(Aliasee->getType(),
622 (GlobalValue::LinkageTypes)Linkage, Name,
624 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
626 // See if this value already exists in the symbol table. If so, it is either
627 // a redefinition or a definition of a forward reference.
628 if (GlobalValue *Val = M->getNamedValue(Name)) {
629 // See if this was a redefinition. If so, there is no entry in
631 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
632 I = ForwardRefVals.find(Name);
633 if (I == ForwardRefVals.end())
634 return Error(NameLoc, "redefinition of global named '@" + Name + "'");
636 // Otherwise, this was a definition of forward ref. Verify that types
638 if (Val->getType() != GA->getType())
639 return Error(NameLoc,
640 "forward reference and definition of alias have different types");
642 // If they agree, just RAUW the old value with the alias and remove the
644 Val->replaceAllUsesWith(GA);
645 Val->eraseFromParent();
646 ForwardRefVals.erase(I);
649 // Insert into the module, we know its name won't collide now.
650 M->getAliasList().push_back(GA);
651 assert(GA->getNameStr() == Name && "Should not be a name conflict!");
657 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalThreadLocal
658 /// OptionalAddrSpace GlobalType Type Const
659 /// ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
660 /// OptionalAddrSpace GlobalType Type Const
662 /// Everything through visibility has been parsed already.
664 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
665 unsigned Linkage, bool HasLinkage,
666 unsigned Visibility) {
668 bool ThreadLocal, IsConstant;
671 PATypeHolder Ty(Type::getVoidTy(Context));
672 if (ParseOptionalToken(lltok::kw_thread_local, ThreadLocal) ||
673 ParseOptionalAddrSpace(AddrSpace) ||
674 ParseGlobalType(IsConstant) ||
675 ParseType(Ty, TyLoc))
678 // If the linkage is specified and is external, then no initializer is
681 if (!HasLinkage || (Linkage != GlobalValue::DLLImportLinkage &&
682 Linkage != GlobalValue::ExternalWeakLinkage &&
683 Linkage != GlobalValue::ExternalLinkage)) {
684 if (ParseGlobalValue(Ty, Init))
688 if (isa<FunctionType>(Ty) || Ty->isLabelTy())
689 return Error(TyLoc, "invalid type for global variable");
691 GlobalVariable *GV = 0;
693 // See if the global was forward referenced, if so, use the global.
695 if (GlobalValue *GVal = M->getNamedValue(Name)) {
696 if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
697 return Error(NameLoc, "redefinition of global '@" + Name + "'");
698 GV = cast<GlobalVariable>(GVal);
701 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
702 I = ForwardRefValIDs.find(NumberedVals.size());
703 if (I != ForwardRefValIDs.end()) {
704 GV = cast<GlobalVariable>(I->second.first);
705 ForwardRefValIDs.erase(I);
710 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, 0,
711 Name, 0, false, AddrSpace);
713 if (GV->getType()->getElementType() != Ty)
715 "forward reference and definition of global have different types");
717 // Move the forward-reference to the correct spot in the module.
718 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
722 NumberedVals.push_back(GV);
724 // Set the parsed properties on the global.
726 GV->setInitializer(Init);
727 GV->setConstant(IsConstant);
728 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
729 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
730 GV->setThreadLocal(ThreadLocal);
732 // Parse attributes on the global.
733 while (Lex.getKind() == lltok::comma) {
736 if (Lex.getKind() == lltok::kw_section) {
738 GV->setSection(Lex.getStrVal());
739 if (ParseToken(lltok::StringConstant, "expected global section string"))
741 } else if (Lex.getKind() == lltok::kw_align) {
743 if (ParseOptionalAlignment(Alignment)) return true;
744 GV->setAlignment(Alignment);
746 TokError("unknown global variable property!");
754 //===----------------------------------------------------------------------===//
755 // GlobalValue Reference/Resolution Routines.
756 //===----------------------------------------------------------------------===//
758 /// GetGlobalVal - Get a value with the specified name or ID, creating a
759 /// forward reference record if needed. This can return null if the value
760 /// exists but does not have the right type.
761 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, const Type *Ty,
763 const PointerType *PTy = dyn_cast<PointerType>(Ty);
765 Error(Loc, "global variable reference must have pointer type");
769 // Look this name up in the normal function symbol table.
771 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
773 // If this is a forward reference for the value, see if we already created a
774 // forward ref record.
776 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
777 I = ForwardRefVals.find(Name);
778 if (I != ForwardRefVals.end())
779 Val = I->second.first;
782 // If we have the value in the symbol table or fwd-ref table, return it.
784 if (Val->getType() == Ty) return Val;
785 Error(Loc, "'@" + Name + "' defined with type '" +
786 Val->getType()->getDescription() + "'");
790 // Otherwise, create a new forward reference for this value and remember it.
792 if (const FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType())) {
793 // Function types can return opaque but functions can't.
794 if (isa<OpaqueType>(FT->getReturnType())) {
795 Error(Loc, "function may not return opaque type");
799 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
801 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
802 GlobalValue::ExternalWeakLinkage, 0, Name);
805 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
809 GlobalValue *LLParser::GetGlobalVal(unsigned ID, const Type *Ty, LocTy Loc) {
810 const PointerType *PTy = dyn_cast<PointerType>(Ty);
812 Error(Loc, "global variable reference must have pointer type");
816 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
818 // If this is a forward reference for the value, see if we already created a
819 // forward ref record.
821 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
822 I = ForwardRefValIDs.find(ID);
823 if (I != ForwardRefValIDs.end())
824 Val = I->second.first;
827 // If we have the value in the symbol table or fwd-ref table, return it.
829 if (Val->getType() == Ty) return Val;
830 Error(Loc, "'@" + utostr(ID) + "' defined with type '" +
831 Val->getType()->getDescription() + "'");
835 // Otherwise, create a new forward reference for this value and remember it.
837 if (const FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType())) {
838 // Function types can return opaque but functions can't.
839 if (isa<OpaqueType>(FT->getReturnType())) {
840 Error(Loc, "function may not return opaque type");
843 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
845 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
846 GlobalValue::ExternalWeakLinkage, 0, "");
849 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
854 //===----------------------------------------------------------------------===//
856 //===----------------------------------------------------------------------===//
858 /// ParseToken - If the current token has the specified kind, eat it and return
859 /// success. Otherwise, emit the specified error and return failure.
860 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
861 if (Lex.getKind() != T)
862 return TokError(ErrMsg);
867 /// ParseStringConstant
868 /// ::= StringConstant
869 bool LLParser::ParseStringConstant(std::string &Result) {
870 if (Lex.getKind() != lltok::StringConstant)
871 return TokError("expected string constant");
872 Result = Lex.getStrVal();
879 bool LLParser::ParseUInt32(unsigned &Val) {
880 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
881 return TokError("expected integer");
882 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
883 if (Val64 != unsigned(Val64))
884 return TokError("expected 32-bit integer (too large)");
891 /// ParseOptionalAddrSpace
893 /// := 'addrspace' '(' uint32 ')'
894 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
896 if (!EatIfPresent(lltok::kw_addrspace))
898 return ParseToken(lltok::lparen, "expected '(' in address space") ||
899 ParseUInt32(AddrSpace) ||
900 ParseToken(lltok::rparen, "expected ')' in address space");
903 /// ParseOptionalAttrs - Parse a potentially empty attribute list. AttrKind
904 /// indicates what kind of attribute list this is: 0: function arg, 1: result,
905 /// 2: function attr.
906 /// 3: function arg after value: FIXME: REMOVE IN LLVM 3.0
907 bool LLParser::ParseOptionalAttrs(unsigned &Attrs, unsigned AttrKind) {
908 Attrs = Attribute::None;
909 LocTy AttrLoc = Lex.getLoc();
912 switch (Lex.getKind()) {
915 // Treat these as signext/zeroext if they occur in the argument list after
916 // the value, as in "call i8 @foo(i8 10 sext)". If they occur before the
917 // value, as in "call i8 @foo(i8 sext (" then it is part of a constant
919 // FIXME: REMOVE THIS IN LLVM 3.0
921 if (Lex.getKind() == lltok::kw_sext)
922 Attrs |= Attribute::SExt;
924 Attrs |= Attribute::ZExt;
928 default: // End of attributes.
929 if (AttrKind != 2 && (Attrs & Attribute::FunctionOnly))
930 return Error(AttrLoc, "invalid use of function-only attribute");
932 if (AttrKind != 0 && AttrKind != 3 && (Attrs & Attribute::ParameterOnly))
933 return Error(AttrLoc, "invalid use of parameter-only attribute");
936 case lltok::kw_zeroext: Attrs |= Attribute::ZExt; break;
937 case lltok::kw_signext: Attrs |= Attribute::SExt; break;
938 case lltok::kw_inreg: Attrs |= Attribute::InReg; break;
939 case lltok::kw_sret: Attrs |= Attribute::StructRet; break;
940 case lltok::kw_noalias: Attrs |= Attribute::NoAlias; break;
941 case lltok::kw_nocapture: Attrs |= Attribute::NoCapture; break;
942 case lltok::kw_byval: Attrs |= Attribute::ByVal; break;
943 case lltok::kw_nest: Attrs |= Attribute::Nest; break;
945 case lltok::kw_noreturn: Attrs |= Attribute::NoReturn; break;
946 case lltok::kw_nounwind: Attrs |= Attribute::NoUnwind; break;
947 case lltok::kw_noinline: Attrs |= Attribute::NoInline; break;
948 case lltok::kw_readnone: Attrs |= Attribute::ReadNone; break;
949 case lltok::kw_readonly: Attrs |= Attribute::ReadOnly; break;
950 case lltok::kw_inlinehint: Attrs |= Attribute::InlineHint; break;
951 case lltok::kw_alwaysinline: Attrs |= Attribute::AlwaysInline; break;
952 case lltok::kw_optsize: Attrs |= Attribute::OptimizeForSize; break;
953 case lltok::kw_ssp: Attrs |= Attribute::StackProtect; break;
954 case lltok::kw_sspreq: Attrs |= Attribute::StackProtectReq; break;
955 case lltok::kw_noredzone: Attrs |= Attribute::NoRedZone; break;
956 case lltok::kw_noimplicitfloat: Attrs |= Attribute::NoImplicitFloat; break;
957 case lltok::kw_naked: Attrs |= Attribute::Naked; break;
959 case lltok::kw_align: {
961 if (ParseOptionalAlignment(Alignment))
963 Attrs |= Attribute::constructAlignmentFromInt(Alignment);
971 /// ParseOptionalLinkage
974 /// ::= 'linker_private'
979 /// ::= 'linkonce_odr'
984 /// ::= 'extern_weak'
986 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
988 switch (Lex.getKind()) {
989 default: Res=GlobalValue::ExternalLinkage; return false;
990 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
991 case lltok::kw_linker_private: Res = GlobalValue::LinkerPrivateLinkage; break;
992 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
993 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
994 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
995 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
996 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
997 case lltok::kw_available_externally:
998 Res = GlobalValue::AvailableExternallyLinkage;
1000 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1001 case lltok::kw_dllexport: Res = GlobalValue::DLLExportLinkage; break;
1002 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1003 case lltok::kw_dllimport: Res = GlobalValue::DLLImportLinkage; break;
1004 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1005 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1012 /// ParseOptionalVisibility
1018 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1019 switch (Lex.getKind()) {
1020 default: Res = GlobalValue::DefaultVisibility; return false;
1021 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1022 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1023 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1029 /// ParseOptionalCallingConv
1034 /// ::= 'x86_stdcallcc'
1035 /// ::= 'x86_fastcallcc'
1036 /// ::= 'arm_apcscc'
1037 /// ::= 'arm_aapcscc'
1038 /// ::= 'arm_aapcs_vfpcc'
1039 /// ::= 'msp430_intrcc'
1042 bool LLParser::ParseOptionalCallingConv(CallingConv::ID &CC) {
1043 switch (Lex.getKind()) {
1044 default: CC = CallingConv::C; return false;
1045 case lltok::kw_ccc: CC = CallingConv::C; break;
1046 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1047 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1048 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1049 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1050 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1051 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1052 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1053 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1054 case lltok::kw_cc: {
1055 unsigned ArbitraryCC;
1057 if (ParseUInt32(ArbitraryCC)) {
1060 CC = static_cast<CallingConv::ID>(ArbitraryCC);
1070 /// ParseInstructionMetadata
1071 /// ::= !dbg !42 (',' !dbg !57)*
1073 ParseInstructionMetadata(SmallVectorImpl<std::pair<unsigned,
1074 MDNode *> > &Result){
1076 if (Lex.getKind() != lltok::MetadataVar)
1077 return TokError("expected metadata after comma");
1079 std::string Name = Lex.getStrVal();
1083 if (ParseToken(lltok::exclaim, "expected '!' here") ||
1084 ParseMDNodeID(Node))
1087 unsigned MDK = M->getMDKindID(Name.c_str());
1088 Result.push_back(std::make_pair(MDK, Node));
1090 // If this is the end of the list, we're done.
1091 } while (EatIfPresent(lltok::comma));
1095 /// ParseOptionalAlignment
1098 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1100 if (!EatIfPresent(lltok::kw_align))
1102 LocTy AlignLoc = Lex.getLoc();
1103 if (ParseUInt32(Alignment)) return true;
1104 if (!isPowerOf2_32(Alignment))
1105 return Error(AlignLoc, "alignment is not a power of two");
1109 /// ParseOptionalCommaAlign
1113 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1115 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1116 bool &AteExtraComma) {
1117 AteExtraComma = false;
1118 while (EatIfPresent(lltok::comma)) {
1119 // Metadata at the end is an early exit.
1120 if (Lex.getKind() == lltok::MetadataVar) {
1121 AteExtraComma = true;
1125 if (Lex.getKind() == lltok::kw_align) {
1126 if (ParseOptionalAlignment(Alignment)) return true;
1135 /// ParseIndexList - This parses the index list for an insert/extractvalue
1136 /// instruction. This sets AteExtraComma in the case where we eat an extra
1137 /// comma at the end of the line and find that it is followed by metadata.
1138 /// Clients that don't allow metadata can call the version of this function that
1139 /// only takes one argument.
1142 /// ::= (',' uint32)+
1144 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1145 bool &AteExtraComma) {
1146 AteExtraComma = false;
1148 if (Lex.getKind() != lltok::comma)
1149 return TokError("expected ',' as start of index list");
1151 while (EatIfPresent(lltok::comma)) {
1152 if (Lex.getKind() == lltok::MetadataVar) {
1153 AteExtraComma = true;
1157 if (ParseUInt32(Idx)) return true;
1158 Indices.push_back(Idx);
1164 //===----------------------------------------------------------------------===//
1166 //===----------------------------------------------------------------------===//
1168 /// ParseType - Parse and resolve a full type.
1169 bool LLParser::ParseType(PATypeHolder &Result, bool AllowVoid) {
1170 LocTy TypeLoc = Lex.getLoc();
1171 if (ParseTypeRec(Result)) return true;
1173 // Verify no unresolved uprefs.
1174 if (!UpRefs.empty())
1175 return Error(UpRefs.back().Loc, "invalid unresolved type up reference");
1177 if (!AllowVoid && Result.get()->isVoidTy())
1178 return Error(TypeLoc, "void type only allowed for function results");
1183 /// HandleUpRefs - Every time we finish a new layer of types, this function is
1184 /// called. It loops through the UpRefs vector, which is a list of the
1185 /// currently active types. For each type, if the up-reference is contained in
1186 /// the newly completed type, we decrement the level count. When the level
1187 /// count reaches zero, the up-referenced type is the type that is passed in:
1188 /// thus we can complete the cycle.
1190 PATypeHolder LLParser::HandleUpRefs(const Type *ty) {
1191 // If Ty isn't abstract, or if there are no up-references in it, then there is
1192 // nothing to resolve here.
1193 if (!ty->isAbstract() || UpRefs.empty()) return ty;
1195 PATypeHolder Ty(ty);
1197 dbgs() << "Type '" << Ty->getDescription()
1198 << "' newly formed. Resolving upreferences.\n"
1199 << UpRefs.size() << " upreferences active!\n";
1202 // If we find any resolvable upreferences (i.e., those whose NestingLevel goes
1203 // to zero), we resolve them all together before we resolve them to Ty. At
1204 // the end of the loop, if there is anything to resolve to Ty, it will be in
1206 OpaqueType *TypeToResolve = 0;
1208 for (unsigned i = 0; i != UpRefs.size(); ++i) {
1209 // Determine if 'Ty' directly contains this up-references 'LastContainedTy'.
1211 std::find(Ty->subtype_begin(), Ty->subtype_end(),
1212 UpRefs[i].LastContainedTy) != Ty->subtype_end();
1215 dbgs() << " UR#" << i << " - TypeContains(" << Ty->getDescription() << ", "
1216 << UpRefs[i].LastContainedTy->getDescription() << ") = "
1217 << (ContainsType ? "true" : "false")
1218 << " level=" << UpRefs[i].NestingLevel << "\n";
1223 // Decrement level of upreference
1224 unsigned Level = --UpRefs[i].NestingLevel;
1225 UpRefs[i].LastContainedTy = Ty;
1227 // If the Up-reference has a non-zero level, it shouldn't be resolved yet.
1232 dbgs() << " * Resolving upreference for " << UpRefs[i].UpRefTy << "\n";
1235 TypeToResolve = UpRefs[i].UpRefTy;
1237 UpRefs[i].UpRefTy->refineAbstractTypeTo(TypeToResolve);
1238 UpRefs.erase(UpRefs.begin()+i); // Remove from upreference list.
1239 --i; // Do not skip the next element.
1243 TypeToResolve->refineAbstractTypeTo(Ty);
1249 /// ParseTypeRec - The recursive function used to process the internal
1250 /// implementation details of types.
1251 bool LLParser::ParseTypeRec(PATypeHolder &Result) {
1252 switch (Lex.getKind()) {
1254 return TokError("expected type");
1256 // TypeRec ::= 'float' | 'void' (etc)
1257 Result = Lex.getTyVal();
1260 case lltok::kw_opaque:
1261 // TypeRec ::= 'opaque'
1262 Result = OpaqueType::get(Context);
1266 // TypeRec ::= '{' ... '}'
1267 if (ParseStructType(Result, false))
1270 case lltok::lsquare:
1271 // TypeRec ::= '[' ... ']'
1272 Lex.Lex(); // eat the lsquare.
1273 if (ParseArrayVectorType(Result, false))
1276 case lltok::less: // Either vector or packed struct.
1277 // TypeRec ::= '<' ... '>'
1279 if (Lex.getKind() == lltok::lbrace) {
1280 if (ParseStructType(Result, true) ||
1281 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1283 } else if (ParseArrayVectorType(Result, true))
1286 case lltok::LocalVar:
1287 case lltok::StringConstant: // FIXME: REMOVE IN LLVM 3.0
1289 if (const Type *T = M->getTypeByName(Lex.getStrVal())) {
1292 Result = OpaqueType::get(Context);
1293 ForwardRefTypes.insert(std::make_pair(Lex.getStrVal(),
1294 std::make_pair(Result,
1296 M->addTypeName(Lex.getStrVal(), Result.get());
1301 case lltok::LocalVarID:
1303 if (Lex.getUIntVal() < NumberedTypes.size())
1304 Result = NumberedTypes[Lex.getUIntVal()];
1306 std::map<unsigned, std::pair<PATypeHolder, LocTy> >::iterator
1307 I = ForwardRefTypeIDs.find(Lex.getUIntVal());
1308 if (I != ForwardRefTypeIDs.end())
1309 Result = I->second.first;
1311 Result = OpaqueType::get(Context);
1312 ForwardRefTypeIDs.insert(std::make_pair(Lex.getUIntVal(),
1313 std::make_pair(Result,
1319 case lltok::backslash: {
1320 // TypeRec ::= '\' 4
1323 if (ParseUInt32(Val)) return true;
1324 OpaqueType *OT = OpaqueType::get(Context); //Use temporary placeholder.
1325 UpRefs.push_back(UpRefRecord(Lex.getLoc(), Val, OT));
1331 // Parse the type suffixes.
1333 switch (Lex.getKind()) {
1335 default: return false;
1337 // TypeRec ::= TypeRec '*'
1339 if (Result.get()->isLabelTy())
1340 return TokError("basic block pointers are invalid");
1341 if (Result.get()->isVoidTy())
1342 return TokError("pointers to void are invalid; use i8* instead");
1343 if (!PointerType::isValidElementType(Result.get()))
1344 return TokError("pointer to this type is invalid");
1345 Result = HandleUpRefs(PointerType::getUnqual(Result.get()));
1349 // TypeRec ::= TypeRec 'addrspace' '(' uint32 ')' '*'
1350 case lltok::kw_addrspace: {
1351 if (Result.get()->isLabelTy())
1352 return TokError("basic block pointers are invalid");
1353 if (Result.get()->isVoidTy())
1354 return TokError("pointers to void are invalid; use i8* instead");
1355 if (!PointerType::isValidElementType(Result.get()))
1356 return TokError("pointer to this type is invalid");
1358 if (ParseOptionalAddrSpace(AddrSpace) ||
1359 ParseToken(lltok::star, "expected '*' in address space"))
1362 Result = HandleUpRefs(PointerType::get(Result.get(), AddrSpace));
1366 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1368 if (ParseFunctionType(Result))
1375 /// ParseParameterList
1377 /// ::= '(' Arg (',' Arg)* ')'
1379 /// ::= Type OptionalAttributes Value OptionalAttributes
1380 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1381 PerFunctionState &PFS) {
1382 if (ParseToken(lltok::lparen, "expected '(' in call"))
1385 while (Lex.getKind() != lltok::rparen) {
1386 // If this isn't the first argument, we need a comma.
1387 if (!ArgList.empty() &&
1388 ParseToken(lltok::comma, "expected ',' in argument list"))
1391 // Parse the argument.
1393 PATypeHolder ArgTy(Type::getVoidTy(Context));
1394 unsigned ArgAttrs1 = Attribute::None;
1395 unsigned ArgAttrs2 = Attribute::None;
1397 if (ParseType(ArgTy, ArgLoc))
1400 // Otherwise, handle normal operands.
1401 if (ParseOptionalAttrs(ArgAttrs1, 0) ||
1402 ParseValue(ArgTy, V, PFS) ||
1403 // FIXME: Should not allow attributes after the argument, remove this
1405 ParseOptionalAttrs(ArgAttrs2, 3))
1407 ArgList.push_back(ParamInfo(ArgLoc, V, ArgAttrs1|ArgAttrs2));
1410 Lex.Lex(); // Lex the ')'.
1416 /// ParseArgumentList - Parse the argument list for a function type or function
1417 /// prototype. If 'inType' is true then we are parsing a FunctionType.
1418 /// ::= '(' ArgTypeListI ')'
1422 /// ::= ArgTypeList ',' '...'
1423 /// ::= ArgType (',' ArgType)*
1425 bool LLParser::ParseArgumentList(std::vector<ArgInfo> &ArgList,
1426 bool &isVarArg, bool inType) {
1428 assert(Lex.getKind() == lltok::lparen);
1429 Lex.Lex(); // eat the (.
1431 if (Lex.getKind() == lltok::rparen) {
1433 } else if (Lex.getKind() == lltok::dotdotdot) {
1437 LocTy TypeLoc = Lex.getLoc();
1438 PATypeHolder ArgTy(Type::getVoidTy(Context));
1442 // If we're parsing a type, use ParseTypeRec, because we allow recursive
1443 // types (such as a function returning a pointer to itself). If parsing a
1444 // function prototype, we require fully resolved types.
1445 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1446 ParseOptionalAttrs(Attrs, 0)) return true;
1448 if (ArgTy->isVoidTy())
1449 return Error(TypeLoc, "argument can not have void type");
1451 if (Lex.getKind() == lltok::LocalVar ||
1452 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1453 Name = Lex.getStrVal();
1457 if (!FunctionType::isValidArgumentType(ArgTy))
1458 return Error(TypeLoc, "invalid type for function argument");
1460 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1462 while (EatIfPresent(lltok::comma)) {
1463 // Handle ... at end of arg list.
1464 if (EatIfPresent(lltok::dotdotdot)) {
1469 // Otherwise must be an argument type.
1470 TypeLoc = Lex.getLoc();
1471 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1472 ParseOptionalAttrs(Attrs, 0)) return true;
1474 if (ArgTy->isVoidTy())
1475 return Error(TypeLoc, "argument can not have void type");
1477 if (Lex.getKind() == lltok::LocalVar ||
1478 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1479 Name = Lex.getStrVal();
1485 if (!ArgTy->isFirstClassType() && !isa<OpaqueType>(ArgTy))
1486 return Error(TypeLoc, "invalid type for function argument");
1488 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1492 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1495 /// ParseFunctionType
1496 /// ::= Type ArgumentList OptionalAttrs
1497 bool LLParser::ParseFunctionType(PATypeHolder &Result) {
1498 assert(Lex.getKind() == lltok::lparen);
1500 if (!FunctionType::isValidReturnType(Result))
1501 return TokError("invalid function return type");
1503 std::vector<ArgInfo> ArgList;
1506 if (ParseArgumentList(ArgList, isVarArg, true) ||
1507 // FIXME: Allow, but ignore attributes on function types!
1508 // FIXME: Remove in LLVM 3.0
1509 ParseOptionalAttrs(Attrs, 2))
1512 // Reject names on the arguments lists.
1513 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1514 if (!ArgList[i].Name.empty())
1515 return Error(ArgList[i].Loc, "argument name invalid in function type");
1516 if (!ArgList[i].Attrs != 0) {
1517 // Allow but ignore attributes on function types; this permits
1519 // FIXME: REJECT ATTRIBUTES ON FUNCTION TYPES in LLVM 3.0
1523 std::vector<const Type*> ArgListTy;
1524 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1525 ArgListTy.push_back(ArgList[i].Type);
1527 Result = HandleUpRefs(FunctionType::get(Result.get(),
1528 ArgListTy, isVarArg));
1532 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
1535 /// ::= '{' TypeRec (',' TypeRec)* '}'
1536 /// ::= '<' '{' '}' '>'
1537 /// ::= '<' '{' TypeRec (',' TypeRec)* '}' '>'
1538 bool LLParser::ParseStructType(PATypeHolder &Result, bool Packed) {
1539 assert(Lex.getKind() == lltok::lbrace);
1540 Lex.Lex(); // Consume the '{'
1542 if (EatIfPresent(lltok::rbrace)) {
1543 Result = StructType::get(Context, Packed);
1547 std::vector<PATypeHolder> ParamsList;
1548 LocTy EltTyLoc = Lex.getLoc();
1549 if (ParseTypeRec(Result)) return true;
1550 ParamsList.push_back(Result);
1552 if (Result->isVoidTy())
1553 return Error(EltTyLoc, "struct element can not have void type");
1554 if (!StructType::isValidElementType(Result))
1555 return Error(EltTyLoc, "invalid element type for struct");
1557 while (EatIfPresent(lltok::comma)) {
1558 EltTyLoc = Lex.getLoc();
1559 if (ParseTypeRec(Result)) return true;
1561 if (Result->isVoidTy())
1562 return Error(EltTyLoc, "struct element can not have void type");
1563 if (!StructType::isValidElementType(Result))
1564 return Error(EltTyLoc, "invalid element type for struct");
1566 ParamsList.push_back(Result);
1569 if (ParseToken(lltok::rbrace, "expected '}' at end of struct"))
1572 std::vector<const Type*> ParamsListTy;
1573 for (unsigned i = 0, e = ParamsList.size(); i != e; ++i)
1574 ParamsListTy.push_back(ParamsList[i].get());
1575 Result = HandleUpRefs(StructType::get(Context, ParamsListTy, Packed));
1579 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
1580 /// token has already been consumed.
1582 /// ::= '[' APSINTVAL 'x' Types ']'
1583 /// ::= '<' APSINTVAL 'x' Types '>'
1584 bool LLParser::ParseArrayVectorType(PATypeHolder &Result, bool isVector) {
1585 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
1586 Lex.getAPSIntVal().getBitWidth() > 64)
1587 return TokError("expected number in address space");
1589 LocTy SizeLoc = Lex.getLoc();
1590 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
1593 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
1596 LocTy TypeLoc = Lex.getLoc();
1597 PATypeHolder EltTy(Type::getVoidTy(Context));
1598 if (ParseTypeRec(EltTy)) return true;
1600 if (EltTy->isVoidTy())
1601 return Error(TypeLoc, "array and vector element type cannot be void");
1603 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
1604 "expected end of sequential type"))
1609 return Error(SizeLoc, "zero element vector is illegal");
1610 if ((unsigned)Size != Size)
1611 return Error(SizeLoc, "size too large for vector");
1612 if (!VectorType::isValidElementType(EltTy))
1613 return Error(TypeLoc, "vector element type must be fp or integer");
1614 Result = VectorType::get(EltTy, unsigned(Size));
1616 if (!ArrayType::isValidElementType(EltTy))
1617 return Error(TypeLoc, "invalid array element type");
1618 Result = HandleUpRefs(ArrayType::get(EltTy, Size));
1623 //===----------------------------------------------------------------------===//
1624 // Function Semantic Analysis.
1625 //===----------------------------------------------------------------------===//
1627 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
1629 : P(p), F(f), FunctionNumber(functionNumber) {
1631 // Insert unnamed arguments into the NumberedVals list.
1632 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
1635 NumberedVals.push_back(AI);
1638 LLParser::PerFunctionState::~PerFunctionState() {
1639 // If there were any forward referenced non-basicblock values, delete them.
1640 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
1641 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
1642 if (!isa<BasicBlock>(I->second.first)) {
1643 I->second.first->replaceAllUsesWith(
1644 UndefValue::get(I->second.first->getType()));
1645 delete I->second.first;
1646 I->second.first = 0;
1649 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1650 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
1651 if (!isa<BasicBlock>(I->second.first)) {
1652 I->second.first->replaceAllUsesWith(
1653 UndefValue::get(I->second.first->getType()));
1654 delete I->second.first;
1655 I->second.first = 0;
1659 bool LLParser::PerFunctionState::FinishFunction() {
1660 // Check to see if someone took the address of labels in this block.
1661 if (!P.ForwardRefBlockAddresses.empty()) {
1663 if (!F.getName().empty()) {
1664 FunctionID.Kind = ValID::t_GlobalName;
1665 FunctionID.StrVal = F.getName();
1667 FunctionID.Kind = ValID::t_GlobalID;
1668 FunctionID.UIntVal = FunctionNumber;
1671 std::map<ValID, std::vector<std::pair<ValID, GlobalValue*> > >::iterator
1672 FRBAI = P.ForwardRefBlockAddresses.find(FunctionID);
1673 if (FRBAI != P.ForwardRefBlockAddresses.end()) {
1674 // Resolve all these references.
1675 if (P.ResolveForwardRefBlockAddresses(&F, FRBAI->second, this))
1678 P.ForwardRefBlockAddresses.erase(FRBAI);
1682 if (!ForwardRefVals.empty())
1683 return P.Error(ForwardRefVals.begin()->second.second,
1684 "use of undefined value '%" + ForwardRefVals.begin()->first +
1686 if (!ForwardRefValIDs.empty())
1687 return P.Error(ForwardRefValIDs.begin()->second.second,
1688 "use of undefined value '%" +
1689 utostr(ForwardRefValIDs.begin()->first) + "'");
1694 /// GetVal - Get a value with the specified name or ID, creating a
1695 /// forward reference record if needed. This can return null if the value
1696 /// exists but does not have the right type.
1697 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
1698 const Type *Ty, LocTy Loc) {
1699 // Look this name up in the normal function symbol table.
1700 Value *Val = F.getValueSymbolTable().lookup(Name);
1702 // If this is a forward reference for the value, see if we already created a
1703 // forward ref record.
1705 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1706 I = ForwardRefVals.find(Name);
1707 if (I != ForwardRefVals.end())
1708 Val = I->second.first;
1711 // If we have the value in the symbol table or fwd-ref table, return it.
1713 if (Val->getType() == Ty) return Val;
1714 if (Ty->isLabelTy())
1715 P.Error(Loc, "'%" + Name + "' is not a basic block");
1717 P.Error(Loc, "'%" + Name + "' defined with type '" +
1718 Val->getType()->getDescription() + "'");
1722 // Don't make placeholders with invalid type.
1723 if (!Ty->isFirstClassType() && !isa<OpaqueType>(Ty) && !Ty->isLabelTy()) {
1724 P.Error(Loc, "invalid use of a non-first-class type");
1728 // Otherwise, create a new forward reference for this value and remember it.
1730 if (Ty->isLabelTy())
1731 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
1733 FwdVal = new Argument(Ty, Name);
1735 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1739 Value *LLParser::PerFunctionState::GetVal(unsigned ID, const Type *Ty,
1741 // Look this name up in the normal function symbol table.
1742 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
1744 // If this is a forward reference for the value, see if we already created a
1745 // forward ref record.
1747 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1748 I = ForwardRefValIDs.find(ID);
1749 if (I != ForwardRefValIDs.end())
1750 Val = I->second.first;
1753 // If we have the value in the symbol table or fwd-ref table, return it.
1755 if (Val->getType() == Ty) return Val;
1756 if (Ty->isLabelTy())
1757 P.Error(Loc, "'%" + utostr(ID) + "' is not a basic block");
1759 P.Error(Loc, "'%" + utostr(ID) + "' defined with type '" +
1760 Val->getType()->getDescription() + "'");
1764 if (!Ty->isFirstClassType() && !isa<OpaqueType>(Ty) && !Ty->isLabelTy()) {
1765 P.Error(Loc, "invalid use of a non-first-class type");
1769 // Otherwise, create a new forward reference for this value and remember it.
1771 if (Ty->isLabelTy())
1772 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
1774 FwdVal = new Argument(Ty);
1776 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1780 /// SetInstName - After an instruction is parsed and inserted into its
1781 /// basic block, this installs its name.
1782 bool LLParser::PerFunctionState::SetInstName(int NameID,
1783 const std::string &NameStr,
1784 LocTy NameLoc, Instruction *Inst) {
1785 // If this instruction has void type, it cannot have a name or ID specified.
1786 if (Inst->getType()->isVoidTy()) {
1787 if (NameID != -1 || !NameStr.empty())
1788 return P.Error(NameLoc, "instructions returning void cannot have a name");
1792 // If this was a numbered instruction, verify that the instruction is the
1793 // expected value and resolve any forward references.
1794 if (NameStr.empty()) {
1795 // If neither a name nor an ID was specified, just use the next ID.
1797 NameID = NumberedVals.size();
1799 if (unsigned(NameID) != NumberedVals.size())
1800 return P.Error(NameLoc, "instruction expected to be numbered '%" +
1801 utostr(NumberedVals.size()) + "'");
1803 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
1804 ForwardRefValIDs.find(NameID);
1805 if (FI != ForwardRefValIDs.end()) {
1806 if (FI->second.first->getType() != Inst->getType())
1807 return P.Error(NameLoc, "instruction forward referenced with type '" +
1808 FI->second.first->getType()->getDescription() + "'");
1809 FI->second.first->replaceAllUsesWith(Inst);
1810 delete FI->second.first;
1811 ForwardRefValIDs.erase(FI);
1814 NumberedVals.push_back(Inst);
1818 // Otherwise, the instruction had a name. Resolve forward refs and set it.
1819 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1820 FI = ForwardRefVals.find(NameStr);
1821 if (FI != ForwardRefVals.end()) {
1822 if (FI->second.first->getType() != Inst->getType())
1823 return P.Error(NameLoc, "instruction forward referenced with type '" +
1824 FI->second.first->getType()->getDescription() + "'");
1825 FI->second.first->replaceAllUsesWith(Inst);
1826 delete FI->second.first;
1827 ForwardRefVals.erase(FI);
1830 // Set the name on the instruction.
1831 Inst->setName(NameStr);
1833 if (Inst->getNameStr() != NameStr)
1834 return P.Error(NameLoc, "multiple definition of local value named '" +
1839 /// GetBB - Get a basic block with the specified name or ID, creating a
1840 /// forward reference record if needed.
1841 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
1843 return cast_or_null<BasicBlock>(GetVal(Name,
1844 Type::getLabelTy(F.getContext()), Loc));
1847 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
1848 return cast_or_null<BasicBlock>(GetVal(ID,
1849 Type::getLabelTy(F.getContext()), Loc));
1852 /// DefineBB - Define the specified basic block, which is either named or
1853 /// unnamed. If there is an error, this returns null otherwise it returns
1854 /// the block being defined.
1855 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
1859 BB = GetBB(NumberedVals.size(), Loc);
1861 BB = GetBB(Name, Loc);
1862 if (BB == 0) return 0; // Already diagnosed error.
1864 // Move the block to the end of the function. Forward ref'd blocks are
1865 // inserted wherever they happen to be referenced.
1866 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
1868 // Remove the block from forward ref sets.
1870 ForwardRefValIDs.erase(NumberedVals.size());
1871 NumberedVals.push_back(BB);
1873 // BB forward references are already in the function symbol table.
1874 ForwardRefVals.erase(Name);
1880 //===----------------------------------------------------------------------===//
1882 //===----------------------------------------------------------------------===//
1884 /// ParseValID - Parse an abstract value that doesn't necessarily have a
1885 /// type implied. For example, if we parse "4" we don't know what integer type
1886 /// it has. The value will later be combined with its type and checked for
1888 bool LLParser::ParseValID(ValID &ID) {
1889 ID.Loc = Lex.getLoc();
1890 switch (Lex.getKind()) {
1891 default: return TokError("expected value token");
1892 case lltok::GlobalID: // @42
1893 ID.UIntVal = Lex.getUIntVal();
1894 ID.Kind = ValID::t_GlobalID;
1896 case lltok::GlobalVar: // @foo
1897 ID.StrVal = Lex.getStrVal();
1898 ID.Kind = ValID::t_GlobalName;
1900 case lltok::LocalVarID: // %42
1901 ID.UIntVal = Lex.getUIntVal();
1902 ID.Kind = ValID::t_LocalID;
1904 case lltok::LocalVar: // %foo
1905 case lltok::StringConstant: // "foo" - FIXME: REMOVE IN LLVM 3.0
1906 ID.StrVal = Lex.getStrVal();
1907 ID.Kind = ValID::t_LocalName;
1909 case lltok::exclaim: // !{...} MDNode, !"foo" MDString
1912 if (EatIfPresent(lltok::lbrace)) {
1913 SmallVector<Value*, 16> Elts;
1914 if (ParseMDNodeVector(Elts) ||
1915 ParseToken(lltok::rbrace, "expected end of metadata node"))
1918 ID.MDNodeVal = MDNode::get(Context, Elts.data(), Elts.size());
1919 ID.Kind = ValID::t_MDNode;
1923 // Standalone metadata reference
1924 // !{ ..., !42, ... }
1925 if (Lex.getKind() == lltok::APSInt) {
1926 if (ParseMDNodeID(ID.MDNodeVal)) return true;
1927 ID.Kind = ValID::t_MDNode;
1932 // ::= '!' STRINGCONSTANT
1933 if (ParseMDString(ID.MDStringVal)) return true;
1934 ID.Kind = ValID::t_MDString;
1937 ID.APSIntVal = Lex.getAPSIntVal();
1938 ID.Kind = ValID::t_APSInt;
1940 case lltok::APFloat:
1941 ID.APFloatVal = Lex.getAPFloatVal();
1942 ID.Kind = ValID::t_APFloat;
1944 case lltok::kw_true:
1945 ID.ConstantVal = ConstantInt::getTrue(Context);
1946 ID.Kind = ValID::t_Constant;
1948 case lltok::kw_false:
1949 ID.ConstantVal = ConstantInt::getFalse(Context);
1950 ID.Kind = ValID::t_Constant;
1952 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
1953 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
1954 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
1956 case lltok::lbrace: {
1957 // ValID ::= '{' ConstVector '}'
1959 SmallVector<Constant*, 16> Elts;
1960 if (ParseGlobalValueVector(Elts) ||
1961 ParseToken(lltok::rbrace, "expected end of struct constant"))
1964 ID.ConstantVal = ConstantStruct::get(Context, Elts.data(),
1965 Elts.size(), false);
1966 ID.Kind = ValID::t_Constant;
1970 // ValID ::= '<' ConstVector '>' --> Vector.
1971 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
1973 bool isPackedStruct = EatIfPresent(lltok::lbrace);
1975 SmallVector<Constant*, 16> Elts;
1976 LocTy FirstEltLoc = Lex.getLoc();
1977 if (ParseGlobalValueVector(Elts) ||
1979 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
1980 ParseToken(lltok::greater, "expected end of constant"))
1983 if (isPackedStruct) {
1985 ConstantStruct::get(Context, Elts.data(), Elts.size(), true);
1986 ID.Kind = ValID::t_Constant;
1991 return Error(ID.Loc, "constant vector must not be empty");
1993 if (!Elts[0]->getType()->isInteger() &&
1994 !Elts[0]->getType()->isFloatingPoint())
1995 return Error(FirstEltLoc,
1996 "vector elements must have integer or floating point type");
1998 // Verify that all the vector elements have the same type.
1999 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2000 if (Elts[i]->getType() != Elts[0]->getType())
2001 return Error(FirstEltLoc,
2002 "vector element #" + utostr(i) +
2003 " is not of type '" + Elts[0]->getType()->getDescription());
2005 ID.ConstantVal = ConstantVector::get(Elts.data(), Elts.size());
2006 ID.Kind = ValID::t_Constant;
2009 case lltok::lsquare: { // Array Constant
2011 SmallVector<Constant*, 16> Elts;
2012 LocTy FirstEltLoc = Lex.getLoc();
2013 if (ParseGlobalValueVector(Elts) ||
2014 ParseToken(lltok::rsquare, "expected end of array constant"))
2017 // Handle empty element.
2019 // Use undef instead of an array because it's inconvenient to determine
2020 // the element type at this point, there being no elements to examine.
2021 ID.Kind = ValID::t_EmptyArray;
2025 if (!Elts[0]->getType()->isFirstClassType())
2026 return Error(FirstEltLoc, "invalid array element type: " +
2027 Elts[0]->getType()->getDescription());
2029 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2031 // Verify all elements are correct type!
2032 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2033 if (Elts[i]->getType() != Elts[0]->getType())
2034 return Error(FirstEltLoc,
2035 "array element #" + utostr(i) +
2036 " is not of type '" +Elts[0]->getType()->getDescription());
2039 ID.ConstantVal = ConstantArray::get(ATy, Elts.data(), Elts.size());
2040 ID.Kind = ValID::t_Constant;
2043 case lltok::kw_c: // c "foo"
2045 ID.ConstantVal = ConstantArray::get(Context, Lex.getStrVal(), false);
2046 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2047 ID.Kind = ValID::t_Constant;
2050 case lltok::kw_asm: {
2051 // ValID ::= 'asm' SideEffect? AlignStack? STRINGCONSTANT ',' STRINGCONSTANT
2052 bool HasSideEffect, AlignStack;
2054 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2055 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2056 ParseStringConstant(ID.StrVal) ||
2057 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2058 ParseToken(lltok::StringConstant, "expected constraint string"))
2060 ID.StrVal2 = Lex.getStrVal();
2061 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1);
2062 ID.Kind = ValID::t_InlineAsm;
2066 case lltok::kw_blockaddress: {
2067 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2071 LocTy FnLoc, LabelLoc;
2073 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2075 ParseToken(lltok::comma, "expected comma in block address expression")||
2076 ParseValID(Label) ||
2077 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2080 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2081 return Error(Fn.Loc, "expected function name in blockaddress");
2082 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2083 return Error(Label.Loc, "expected basic block name in blockaddress");
2085 // Make a global variable as a placeholder for this reference.
2086 GlobalVariable *FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context),
2087 false, GlobalValue::InternalLinkage,
2089 ForwardRefBlockAddresses[Fn].push_back(std::make_pair(Label, FwdRef));
2090 ID.ConstantVal = FwdRef;
2091 ID.Kind = ValID::t_Constant;
2095 case lltok::kw_trunc:
2096 case lltok::kw_zext:
2097 case lltok::kw_sext:
2098 case lltok::kw_fptrunc:
2099 case lltok::kw_fpext:
2100 case lltok::kw_bitcast:
2101 case lltok::kw_uitofp:
2102 case lltok::kw_sitofp:
2103 case lltok::kw_fptoui:
2104 case lltok::kw_fptosi:
2105 case lltok::kw_inttoptr:
2106 case lltok::kw_ptrtoint: {
2107 unsigned Opc = Lex.getUIntVal();
2108 PATypeHolder DestTy(Type::getVoidTy(Context));
2111 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2112 ParseGlobalTypeAndValue(SrcVal) ||
2113 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2114 ParseType(DestTy) ||
2115 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2117 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2118 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2119 SrcVal->getType()->getDescription() + "' to '" +
2120 DestTy->getDescription() + "'");
2121 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2123 ID.Kind = ValID::t_Constant;
2126 case lltok::kw_extractvalue: {
2129 SmallVector<unsigned, 4> Indices;
2130 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2131 ParseGlobalTypeAndValue(Val) ||
2132 ParseIndexList(Indices) ||
2133 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2136 if (!isa<StructType>(Val->getType()) && !isa<ArrayType>(Val->getType()))
2137 return Error(ID.Loc, "extractvalue operand must be array or struct");
2138 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
2140 return Error(ID.Loc, "invalid indices for extractvalue");
2142 ConstantExpr::getExtractValue(Val, Indices.data(), Indices.size());
2143 ID.Kind = ValID::t_Constant;
2146 case lltok::kw_insertvalue: {
2148 Constant *Val0, *Val1;
2149 SmallVector<unsigned, 4> Indices;
2150 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2151 ParseGlobalTypeAndValue(Val0) ||
2152 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2153 ParseGlobalTypeAndValue(Val1) ||
2154 ParseIndexList(Indices) ||
2155 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2157 if (!isa<StructType>(Val0->getType()) && !isa<ArrayType>(Val0->getType()))
2158 return Error(ID.Loc, "extractvalue operand must be array or struct");
2159 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
2161 return Error(ID.Loc, "invalid indices for insertvalue");
2162 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1,
2163 Indices.data(), Indices.size());
2164 ID.Kind = ValID::t_Constant;
2167 case lltok::kw_icmp:
2168 case lltok::kw_fcmp: {
2169 unsigned PredVal, Opc = Lex.getUIntVal();
2170 Constant *Val0, *Val1;
2172 if (ParseCmpPredicate(PredVal, Opc) ||
2173 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2174 ParseGlobalTypeAndValue(Val0) ||
2175 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2176 ParseGlobalTypeAndValue(Val1) ||
2177 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2180 if (Val0->getType() != Val1->getType())
2181 return Error(ID.Loc, "compare operands must have the same type");
2183 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2185 if (Opc == Instruction::FCmp) {
2186 if (!Val0->getType()->isFPOrFPVector())
2187 return Error(ID.Loc, "fcmp requires floating point operands");
2188 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2190 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2191 if (!Val0->getType()->isIntOrIntVector() &&
2192 !isa<PointerType>(Val0->getType()))
2193 return Error(ID.Loc, "icmp requires pointer or integer operands");
2194 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2196 ID.Kind = ValID::t_Constant;
2200 // Binary Operators.
2202 case lltok::kw_fadd:
2204 case lltok::kw_fsub:
2206 case lltok::kw_fmul:
2207 case lltok::kw_udiv:
2208 case lltok::kw_sdiv:
2209 case lltok::kw_fdiv:
2210 case lltok::kw_urem:
2211 case lltok::kw_srem:
2212 case lltok::kw_frem: {
2216 unsigned Opc = Lex.getUIntVal();
2217 Constant *Val0, *Val1;
2219 LocTy ModifierLoc = Lex.getLoc();
2220 if (Opc == Instruction::Add ||
2221 Opc == Instruction::Sub ||
2222 Opc == Instruction::Mul) {
2223 if (EatIfPresent(lltok::kw_nuw))
2225 if (EatIfPresent(lltok::kw_nsw)) {
2227 if (EatIfPresent(lltok::kw_nuw))
2230 } else if (Opc == Instruction::SDiv) {
2231 if (EatIfPresent(lltok::kw_exact))
2234 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2235 ParseGlobalTypeAndValue(Val0) ||
2236 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2237 ParseGlobalTypeAndValue(Val1) ||
2238 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2240 if (Val0->getType() != Val1->getType())
2241 return Error(ID.Loc, "operands of constexpr must have same type");
2242 if (!Val0->getType()->isIntOrIntVector()) {
2244 return Error(ModifierLoc, "nuw only applies to integer operations");
2246 return Error(ModifierLoc, "nsw only applies to integer operations");
2248 // API compatibility: Accept either integer or floating-point types with
2249 // add, sub, and mul.
2250 if (!Val0->getType()->isIntOrIntVector() &&
2251 !Val0->getType()->isFPOrFPVector())
2252 return Error(ID.Loc,"constexpr requires integer, fp, or vector operands");
2254 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2255 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2256 if (Exact) Flags |= SDivOperator::IsExact;
2257 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2259 ID.Kind = ValID::t_Constant;
2263 // Logical Operations
2265 case lltok::kw_lshr:
2266 case lltok::kw_ashr:
2269 case lltok::kw_xor: {
2270 unsigned Opc = Lex.getUIntVal();
2271 Constant *Val0, *Val1;
2273 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2274 ParseGlobalTypeAndValue(Val0) ||
2275 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2276 ParseGlobalTypeAndValue(Val1) ||
2277 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2279 if (Val0->getType() != Val1->getType())
2280 return Error(ID.Loc, "operands of constexpr must have same type");
2281 if (!Val0->getType()->isIntOrIntVector())
2282 return Error(ID.Loc,
2283 "constexpr requires integer or integer vector operands");
2284 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2285 ID.Kind = ValID::t_Constant;
2289 case lltok::kw_getelementptr:
2290 case lltok::kw_shufflevector:
2291 case lltok::kw_insertelement:
2292 case lltok::kw_extractelement:
2293 case lltok::kw_select: {
2294 unsigned Opc = Lex.getUIntVal();
2295 SmallVector<Constant*, 16> Elts;
2296 bool InBounds = false;
2298 if (Opc == Instruction::GetElementPtr)
2299 InBounds = EatIfPresent(lltok::kw_inbounds);
2300 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2301 ParseGlobalValueVector(Elts) ||
2302 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2305 if (Opc == Instruction::GetElementPtr) {
2306 if (Elts.size() == 0 || !isa<PointerType>(Elts[0]->getType()))
2307 return Error(ID.Loc, "getelementptr requires pointer operand");
2309 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(),
2310 (Value**)(Elts.data() + 1),
2312 return Error(ID.Loc, "invalid indices for getelementptr");
2313 ID.ConstantVal = InBounds ?
2314 ConstantExpr::getInBoundsGetElementPtr(Elts[0],
2317 ConstantExpr::getGetElementPtr(Elts[0],
2318 Elts.data() + 1, Elts.size() - 1);
2319 } else if (Opc == Instruction::Select) {
2320 if (Elts.size() != 3)
2321 return Error(ID.Loc, "expected three operands to select");
2322 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2324 return Error(ID.Loc, Reason);
2325 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2326 } else if (Opc == Instruction::ShuffleVector) {
2327 if (Elts.size() != 3)
2328 return Error(ID.Loc, "expected three operands to shufflevector");
2329 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2330 return Error(ID.Loc, "invalid operands to shufflevector");
2332 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2333 } else if (Opc == Instruction::ExtractElement) {
2334 if (Elts.size() != 2)
2335 return Error(ID.Loc, "expected two operands to extractelement");
2336 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2337 return Error(ID.Loc, "invalid extractelement operands");
2338 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2340 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2341 if (Elts.size() != 3)
2342 return Error(ID.Loc, "expected three operands to insertelement");
2343 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2344 return Error(ID.Loc, "invalid insertelement operands");
2346 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2349 ID.Kind = ValID::t_Constant;
2358 /// ParseGlobalValue - Parse a global value with the specified type.
2359 bool LLParser::ParseGlobalValue(const Type *Ty, Constant *&V) {
2362 return ParseValID(ID) ||
2363 ConvertGlobalValIDToValue(Ty, ID, V);
2366 /// ConvertGlobalValIDToValue - Apply a type to a ValID to get a fully resolved
2368 bool LLParser::ConvertGlobalValIDToValue(const Type *Ty, ValID &ID,
2370 if (isa<FunctionType>(Ty))
2371 return Error(ID.Loc, "functions are not values, refer to them as pointers");
2374 default: llvm_unreachable("Unknown ValID!");
2375 case ValID::t_MDNode:
2376 case ValID::t_MDString:
2377 return Error(ID.Loc, "invalid use of metadata");
2378 case ValID::t_LocalID:
2379 case ValID::t_LocalName:
2380 return Error(ID.Loc, "invalid use of function-local name");
2381 case ValID::t_InlineAsm:
2382 return Error(ID.Loc, "inline asm can only be an operand of call/invoke");
2383 case ValID::t_GlobalName:
2384 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
2386 case ValID::t_GlobalID:
2387 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
2389 case ValID::t_APSInt:
2390 if (!isa<IntegerType>(Ty))
2391 return Error(ID.Loc, "integer constant must have integer type");
2392 ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
2393 V = ConstantInt::get(Context, ID.APSIntVal);
2395 case ValID::t_APFloat:
2396 if (!Ty->isFloatingPoint() ||
2397 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
2398 return Error(ID.Loc, "floating point constant invalid for type");
2400 // The lexer has no type info, so builds all float and double FP constants
2401 // as double. Fix this here. Long double does not need this.
2402 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble &&
2405 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
2408 V = ConstantFP::get(Context, ID.APFloatVal);
2410 if (V->getType() != Ty)
2411 return Error(ID.Loc, "floating point constant does not have type '" +
2412 Ty->getDescription() + "'");
2416 if (!isa<PointerType>(Ty))
2417 return Error(ID.Loc, "null must be a pointer type");
2418 V = ConstantPointerNull::get(cast<PointerType>(Ty));
2420 case ValID::t_Undef:
2421 // FIXME: LabelTy should not be a first-class type.
2422 if ((!Ty->isFirstClassType() || Ty->isLabelTy()) &&
2423 !isa<OpaqueType>(Ty))
2424 return Error(ID.Loc, "invalid type for undef constant");
2425 V = UndefValue::get(Ty);
2427 case ValID::t_EmptyArray:
2428 if (!isa<ArrayType>(Ty) || cast<ArrayType>(Ty)->getNumElements() != 0)
2429 return Error(ID.Loc, "invalid empty array initializer");
2430 V = UndefValue::get(Ty);
2433 // FIXME: LabelTy should not be a first-class type.
2434 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2435 return Error(ID.Loc, "invalid type for null constant");
2436 V = Constant::getNullValue(Ty);
2438 case ValID::t_Constant:
2439 if (ID.ConstantVal->getType() != Ty)
2440 return Error(ID.Loc, "constant expression type mismatch");
2446 /// ConvertGlobalOrMetadataValIDToValue - Apply a type to a ValID to get a fully
2447 /// resolved constant or metadata value.
2448 bool LLParser::ConvertGlobalOrMetadataValIDToValue(const Type *Ty, ValID &ID,
2451 case ValID::t_MDNode:
2452 if (!Ty->isMetadataTy())
2453 return Error(ID.Loc, "metadata value must have metadata type");
2456 case ValID::t_MDString:
2457 if (!Ty->isMetadataTy())
2458 return Error(ID.Loc, "metadata value must have metadata type");
2463 if (ConvertGlobalValIDToValue(Ty, ID, C)) return true;
2470 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2471 PATypeHolder Type(Type::getVoidTy(Context));
2472 return ParseType(Type) ||
2473 ParseGlobalValue(Type, V);
2476 /// ParseGlobalValueVector
2478 /// ::= TypeAndValue (',' TypeAndValue)*
2479 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts) {
2481 if (Lex.getKind() == lltok::rbrace ||
2482 Lex.getKind() == lltok::rsquare ||
2483 Lex.getKind() == lltok::greater ||
2484 Lex.getKind() == lltok::rparen)
2488 if (ParseGlobalTypeAndValue(C)) return true;
2491 while (EatIfPresent(lltok::comma)) {
2492 if (ParseGlobalTypeAndValue(C)) return true;
2500 //===----------------------------------------------------------------------===//
2501 // Function Parsing.
2502 //===----------------------------------------------------------------------===//
2504 bool LLParser::ConvertValIDToValue(const Type *Ty, ValID &ID, Value *&V,
2505 PerFunctionState &PFS) {
2507 case ValID::t_LocalID: V = PFS.GetVal(ID.UIntVal, Ty, ID.Loc); break;
2508 case ValID::t_LocalName: V = PFS.GetVal(ID.StrVal, Ty, ID.Loc); break;
2509 case ValID::t_InlineAsm: {
2510 const PointerType *PTy = dyn_cast<PointerType>(Ty);
2511 const FunctionType *FTy =
2512 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
2513 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
2514 return Error(ID.Loc, "invalid type for inline asm constraint string");
2515 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1, ID.UIntVal>>1);
2519 return ConvertGlobalOrMetadataValIDToValue(Ty, ID, V);
2525 bool LLParser::ParseValue(const Type *Ty, Value *&V, PerFunctionState &PFS) {
2528 return ParseValID(ID) ||
2529 ConvertValIDToValue(Ty, ID, V, PFS);
2532 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState &PFS) {
2533 PATypeHolder T(Type::getVoidTy(Context));
2534 return ParseType(T) ||
2535 ParseValue(T, V, PFS);
2538 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
2539 PerFunctionState &PFS) {
2542 if (ParseTypeAndValue(V, PFS)) return true;
2543 if (!isa<BasicBlock>(V))
2544 return Error(Loc, "expected a basic block");
2545 BB = cast<BasicBlock>(V);
2551 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
2552 /// Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
2553 /// OptionalAlign OptGC
2554 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
2555 // Parse the linkage.
2556 LocTy LinkageLoc = Lex.getLoc();
2559 unsigned Visibility, RetAttrs;
2561 PATypeHolder RetType(Type::getVoidTy(Context));
2562 LocTy RetTypeLoc = Lex.getLoc();
2563 if (ParseOptionalLinkage(Linkage) ||
2564 ParseOptionalVisibility(Visibility) ||
2565 ParseOptionalCallingConv(CC) ||
2566 ParseOptionalAttrs(RetAttrs, 1) ||
2567 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
2570 // Verify that the linkage is ok.
2571 switch ((GlobalValue::LinkageTypes)Linkage) {
2572 case GlobalValue::ExternalLinkage:
2573 break; // always ok.
2574 case GlobalValue::DLLImportLinkage:
2575 case GlobalValue::ExternalWeakLinkage:
2577 return Error(LinkageLoc, "invalid linkage for function definition");
2579 case GlobalValue::PrivateLinkage:
2580 case GlobalValue::LinkerPrivateLinkage:
2581 case GlobalValue::InternalLinkage:
2582 case GlobalValue::AvailableExternallyLinkage:
2583 case GlobalValue::LinkOnceAnyLinkage:
2584 case GlobalValue::LinkOnceODRLinkage:
2585 case GlobalValue::WeakAnyLinkage:
2586 case GlobalValue::WeakODRLinkage:
2587 case GlobalValue::DLLExportLinkage:
2589 return Error(LinkageLoc, "invalid linkage for function declaration");
2591 case GlobalValue::AppendingLinkage:
2592 case GlobalValue::GhostLinkage:
2593 case GlobalValue::CommonLinkage:
2594 return Error(LinkageLoc, "invalid function linkage type");
2597 if (!FunctionType::isValidReturnType(RetType) ||
2598 isa<OpaqueType>(RetType))
2599 return Error(RetTypeLoc, "invalid function return type");
2601 LocTy NameLoc = Lex.getLoc();
2603 std::string FunctionName;
2604 if (Lex.getKind() == lltok::GlobalVar) {
2605 FunctionName = Lex.getStrVal();
2606 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
2607 unsigned NameID = Lex.getUIntVal();
2609 if (NameID != NumberedVals.size())
2610 return TokError("function expected to be numbered '%" +
2611 utostr(NumberedVals.size()) + "'");
2613 return TokError("expected function name");
2618 if (Lex.getKind() != lltok::lparen)
2619 return TokError("expected '(' in function argument list");
2621 std::vector<ArgInfo> ArgList;
2624 std::string Section;
2628 if (ParseArgumentList(ArgList, isVarArg, false) ||
2629 ParseOptionalAttrs(FuncAttrs, 2) ||
2630 (EatIfPresent(lltok::kw_section) &&
2631 ParseStringConstant(Section)) ||
2632 ParseOptionalAlignment(Alignment) ||
2633 (EatIfPresent(lltok::kw_gc) &&
2634 ParseStringConstant(GC)))
2637 // If the alignment was parsed as an attribute, move to the alignment field.
2638 if (FuncAttrs & Attribute::Alignment) {
2639 Alignment = Attribute::getAlignmentFromAttrs(FuncAttrs);
2640 FuncAttrs &= ~Attribute::Alignment;
2643 // Okay, if we got here, the function is syntactically valid. Convert types
2644 // and do semantic checks.
2645 std::vector<const Type*> ParamTypeList;
2646 SmallVector<AttributeWithIndex, 8> Attrs;
2647 // FIXME : In 3.0, stop accepting zext, sext and inreg as optional function
2649 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
2650 if (FuncAttrs & ObsoleteFuncAttrs) {
2651 RetAttrs |= FuncAttrs & ObsoleteFuncAttrs;
2652 FuncAttrs &= ~ObsoleteFuncAttrs;
2655 if (RetAttrs != Attribute::None)
2656 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
2658 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2659 ParamTypeList.push_back(ArgList[i].Type);
2660 if (ArgList[i].Attrs != Attribute::None)
2661 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
2664 if (FuncAttrs != Attribute::None)
2665 Attrs.push_back(AttributeWithIndex::get(~0, FuncAttrs));
2667 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
2669 if (PAL.paramHasAttr(1, Attribute::StructRet) && !RetType->isVoidTy())
2670 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
2672 const FunctionType *FT =
2673 FunctionType::get(RetType, ParamTypeList, isVarArg);
2674 const PointerType *PFT = PointerType::getUnqual(FT);
2677 if (!FunctionName.empty()) {
2678 // If this was a definition of a forward reference, remove the definition
2679 // from the forward reference table and fill in the forward ref.
2680 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
2681 ForwardRefVals.find(FunctionName);
2682 if (FRVI != ForwardRefVals.end()) {
2683 Fn = M->getFunction(FunctionName);
2684 ForwardRefVals.erase(FRVI);
2685 } else if ((Fn = M->getFunction(FunctionName))) {
2686 // If this function already exists in the symbol table, then it is
2687 // multiply defined. We accept a few cases for old backwards compat.
2688 // FIXME: Remove this stuff for LLVM 3.0.
2689 if (Fn->getType() != PFT || Fn->getAttributes() != PAL ||
2690 (!Fn->isDeclaration() && isDefine)) {
2691 // If the redefinition has different type or different attributes,
2692 // reject it. If both have bodies, reject it.
2693 return Error(NameLoc, "invalid redefinition of function '" +
2694 FunctionName + "'");
2695 } else if (Fn->isDeclaration()) {
2696 // Make sure to strip off any argument names so we can't get conflicts.
2697 for (Function::arg_iterator AI = Fn->arg_begin(), AE = Fn->arg_end();
2701 } else if (M->getNamedValue(FunctionName)) {
2702 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
2706 // If this is a definition of a forward referenced function, make sure the
2708 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
2709 = ForwardRefValIDs.find(NumberedVals.size());
2710 if (I != ForwardRefValIDs.end()) {
2711 Fn = cast<Function>(I->second.first);
2712 if (Fn->getType() != PFT)
2713 return Error(NameLoc, "type of definition and forward reference of '@" +
2714 utostr(NumberedVals.size()) +"' disagree");
2715 ForwardRefValIDs.erase(I);
2720 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
2721 else // Move the forward-reference to the correct spot in the module.
2722 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
2724 if (FunctionName.empty())
2725 NumberedVals.push_back(Fn);
2727 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
2728 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
2729 Fn->setCallingConv(CC);
2730 Fn->setAttributes(PAL);
2731 Fn->setAlignment(Alignment);
2732 Fn->setSection(Section);
2733 if (!GC.empty()) Fn->setGC(GC.c_str());
2735 // Add all of the arguments we parsed to the function.
2736 Function::arg_iterator ArgIt = Fn->arg_begin();
2737 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
2738 // If we run out of arguments in the Function prototype, exit early.
2739 // FIXME: REMOVE THIS IN LLVM 3.0, this is just for the mismatch case above.
2740 if (ArgIt == Fn->arg_end()) break;
2742 // If the argument has a name, insert it into the argument symbol table.
2743 if (ArgList[i].Name.empty()) continue;
2745 // Set the name, if it conflicted, it will be auto-renamed.
2746 ArgIt->setName(ArgList[i].Name);
2748 if (ArgIt->getNameStr() != ArgList[i].Name)
2749 return Error(ArgList[i].Loc, "redefinition of argument '%" +
2750 ArgList[i].Name + "'");
2757 /// ParseFunctionBody
2758 /// ::= '{' BasicBlock+ '}'
2759 /// ::= 'begin' BasicBlock+ 'end' // FIXME: remove in LLVM 3.0
2761 bool LLParser::ParseFunctionBody(Function &Fn) {
2762 if (Lex.getKind() != lltok::lbrace && Lex.getKind() != lltok::kw_begin)
2763 return TokError("expected '{' in function body");
2764 Lex.Lex(); // eat the {.
2766 int FunctionNumber = -1;
2767 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
2769 PerFunctionState PFS(*this, Fn, FunctionNumber);
2771 while (Lex.getKind() != lltok::rbrace && Lex.getKind() != lltok::kw_end)
2772 if (ParseBasicBlock(PFS)) return true;
2777 // Verify function is ok.
2778 return PFS.FinishFunction();
2782 /// ::= LabelStr? Instruction*
2783 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
2784 // If this basic block starts out with a name, remember it.
2786 LocTy NameLoc = Lex.getLoc();
2787 if (Lex.getKind() == lltok::LabelStr) {
2788 Name = Lex.getStrVal();
2792 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
2793 if (BB == 0) return true;
2795 std::string NameStr;
2797 // Parse the instructions in this block until we get a terminator.
2799 SmallVector<std::pair<unsigned, MDNode *>, 4> MetadataOnInst;
2801 // This instruction may have three possibilities for a name: a) none
2802 // specified, b) name specified "%foo =", c) number specified: "%4 =".
2803 LocTy NameLoc = Lex.getLoc();
2807 if (Lex.getKind() == lltok::LocalVarID) {
2808 NameID = Lex.getUIntVal();
2810 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
2812 } else if (Lex.getKind() == lltok::LocalVar ||
2813 // FIXME: REMOVE IN LLVM 3.0
2814 Lex.getKind() == lltok::StringConstant) {
2815 NameStr = Lex.getStrVal();
2817 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
2821 switch (ParseInstruction(Inst, BB, PFS)) {
2822 default: assert(0 && "Unknown ParseInstruction result!");
2823 case InstError: return true;
2825 // With a normal result, we check to see if the instruction is followed by
2826 // a comma and metadata.
2827 if (EatIfPresent(lltok::comma))
2828 if (ParseInstructionMetadata(MetadataOnInst))
2831 case InstExtraComma:
2832 // If the instruction parser ate an extra comma at the end of it, it
2833 // *must* be followed by metadata.
2834 if (ParseInstructionMetadata(MetadataOnInst))
2839 // Set metadata attached with this instruction.
2840 for (unsigned i = 0, e = MetadataOnInst.size(); i != e; ++i)
2841 Inst->setMetadata(MetadataOnInst[i].first, MetadataOnInst[i].second);
2842 MetadataOnInst.clear();
2844 BB->getInstList().push_back(Inst);
2846 // Set the name on the instruction.
2847 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
2848 } while (!isa<TerminatorInst>(Inst));
2853 //===----------------------------------------------------------------------===//
2854 // Instruction Parsing.
2855 //===----------------------------------------------------------------------===//
2857 /// ParseInstruction - Parse one of the many different instructions.
2859 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
2860 PerFunctionState &PFS) {
2861 lltok::Kind Token = Lex.getKind();
2862 if (Token == lltok::Eof)
2863 return TokError("found end of file when expecting more instructions");
2864 LocTy Loc = Lex.getLoc();
2865 unsigned KeywordVal = Lex.getUIntVal();
2866 Lex.Lex(); // Eat the keyword.
2869 default: return Error(Loc, "expected instruction opcode");
2870 // Terminator Instructions.
2871 case lltok::kw_unwind: Inst = new UnwindInst(Context); return false;
2872 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
2873 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
2874 case lltok::kw_br: return ParseBr(Inst, PFS);
2875 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
2876 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
2877 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
2878 // Binary Operators.
2881 case lltok::kw_mul: {
2884 LocTy ModifierLoc = Lex.getLoc();
2885 if (EatIfPresent(lltok::kw_nuw))
2887 if (EatIfPresent(lltok::kw_nsw)) {
2889 if (EatIfPresent(lltok::kw_nuw))
2892 // API compatibility: Accept either integer or floating-point types.
2893 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 0);
2895 if (!Inst->getType()->isIntOrIntVector()) {
2897 return Error(ModifierLoc, "nuw only applies to integer operations");
2899 return Error(ModifierLoc, "nsw only applies to integer operations");
2902 cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
2904 cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
2908 case lltok::kw_fadd:
2909 case lltok::kw_fsub:
2910 case lltok::kw_fmul: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
2912 case lltok::kw_sdiv: {
2914 if (EatIfPresent(lltok::kw_exact))
2916 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 1);
2919 cast<BinaryOperator>(Inst)->setIsExact(true);
2923 case lltok::kw_udiv:
2924 case lltok::kw_urem:
2925 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
2926 case lltok::kw_fdiv:
2927 case lltok::kw_frem: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
2929 case lltok::kw_lshr:
2930 case lltok::kw_ashr:
2933 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
2934 case lltok::kw_icmp:
2935 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
2937 case lltok::kw_trunc:
2938 case lltok::kw_zext:
2939 case lltok::kw_sext:
2940 case lltok::kw_fptrunc:
2941 case lltok::kw_fpext:
2942 case lltok::kw_bitcast:
2943 case lltok::kw_uitofp:
2944 case lltok::kw_sitofp:
2945 case lltok::kw_fptoui:
2946 case lltok::kw_fptosi:
2947 case lltok::kw_inttoptr:
2948 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
2950 case lltok::kw_select: return ParseSelect(Inst, PFS);
2951 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
2952 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
2953 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
2954 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
2955 case lltok::kw_phi: return ParsePHI(Inst, PFS);
2956 case lltok::kw_call: return ParseCall(Inst, PFS, false);
2957 case lltok::kw_tail: return ParseCall(Inst, PFS, true);
2959 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
2960 case lltok::kw_malloc: return ParseAlloc(Inst, PFS, BB, false);
2961 case lltok::kw_free: return ParseFree(Inst, PFS, BB);
2962 case lltok::kw_load: return ParseLoad(Inst, PFS, false);
2963 case lltok::kw_store: return ParseStore(Inst, PFS, false);
2964 case lltok::kw_volatile:
2965 if (EatIfPresent(lltok::kw_load))
2966 return ParseLoad(Inst, PFS, true);
2967 else if (EatIfPresent(lltok::kw_store))
2968 return ParseStore(Inst, PFS, true);
2970 return TokError("expected 'load' or 'store'");
2971 case lltok::kw_getresult: return ParseGetResult(Inst, PFS);
2972 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
2973 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
2974 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
2978 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
2979 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
2980 if (Opc == Instruction::FCmp) {
2981 switch (Lex.getKind()) {
2982 default: TokError("expected fcmp predicate (e.g. 'oeq')");
2983 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
2984 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
2985 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
2986 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
2987 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
2988 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
2989 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
2990 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
2991 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
2992 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
2993 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
2994 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
2995 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
2996 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
2997 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
2998 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
3001 switch (Lex.getKind()) {
3002 default: TokError("expected icmp predicate (e.g. 'eq')");
3003 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
3004 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
3005 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
3006 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
3007 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
3008 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
3009 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
3010 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
3011 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
3012 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3019 //===----------------------------------------------------------------------===//
3020 // Terminator Instructions.
3021 //===----------------------------------------------------------------------===//
3023 /// ParseRet - Parse a return instruction.
3024 /// ::= 'ret' void (',' !dbg, !1)*
3025 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
3026 /// ::= 'ret' TypeAndValue (',' TypeAndValue)+ (',' !dbg, !1)*
3027 /// [[obsolete: LLVM 3.0]]
3028 int LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3029 PerFunctionState &PFS) {
3030 PATypeHolder Ty(Type::getVoidTy(Context));
3031 if (ParseType(Ty, true /*void allowed*/)) return true;
3033 if (Ty->isVoidTy()) {
3034 Inst = ReturnInst::Create(Context);
3039 if (ParseValue(Ty, RV, PFS)) return true;
3041 bool ExtraComma = false;
3042 if (EatIfPresent(lltok::comma)) {
3043 // Parse optional custom metadata, e.g. !dbg
3044 if (Lex.getKind() == lltok::MetadataVar) {
3047 // The normal case is one return value.
3048 // FIXME: LLVM 3.0 remove MRV support for 'ret i32 1, i32 2', requiring
3049 // use of 'ret {i32,i32} {i32 1, i32 2}'
3050 SmallVector<Value*, 8> RVs;
3054 // If optional custom metadata, e.g. !dbg is seen then this is the
3056 if (Lex.getKind() == lltok::MetadataVar)
3058 if (ParseTypeAndValue(RV, PFS)) return true;
3060 } while (EatIfPresent(lltok::comma));
3062 RV = UndefValue::get(PFS.getFunction().getReturnType());
3063 for (unsigned i = 0, e = RVs.size(); i != e; ++i) {
3064 Instruction *I = InsertValueInst::Create(RV, RVs[i], i, "mrv");
3065 BB->getInstList().push_back(I);
3071 Inst = ReturnInst::Create(Context, RV);
3072 return ExtraComma ? InstExtraComma : InstNormal;
3077 /// ::= 'br' TypeAndValue
3078 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3079 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
3082 BasicBlock *Op1, *Op2;
3083 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
3085 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
3086 Inst = BranchInst::Create(BB);
3090 if (Op0->getType() != Type::getInt1Ty(Context))
3091 return Error(Loc, "branch condition must have 'i1' type");
3093 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
3094 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
3095 ParseToken(lltok::comma, "expected ',' after true destination") ||
3096 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
3099 Inst = BranchInst::Create(Op1, Op2, Op0);
3105 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
3107 /// ::= (TypeAndValue ',' TypeAndValue)*
3108 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
3109 LocTy CondLoc, BBLoc;
3111 BasicBlock *DefaultBB;
3112 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
3113 ParseToken(lltok::comma, "expected ',' after switch condition") ||
3114 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
3115 ParseToken(lltok::lsquare, "expected '[' with switch table"))
3118 if (!isa<IntegerType>(Cond->getType()))
3119 return Error(CondLoc, "switch condition must have integer type");
3121 // Parse the jump table pairs.
3122 SmallPtrSet<Value*, 32> SeenCases;
3123 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
3124 while (Lex.getKind() != lltok::rsquare) {
3128 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
3129 ParseToken(lltok::comma, "expected ',' after case value") ||
3130 ParseTypeAndBasicBlock(DestBB, PFS))
3133 if (!SeenCases.insert(Constant))
3134 return Error(CondLoc, "duplicate case value in switch");
3135 if (!isa<ConstantInt>(Constant))
3136 return Error(CondLoc, "case value is not a constant integer");
3138 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
3141 Lex.Lex(); // Eat the ']'.
3143 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
3144 for (unsigned i = 0, e = Table.size(); i != e; ++i)
3145 SI->addCase(Table[i].first, Table[i].second);
3152 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
3153 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
3156 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
3157 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
3158 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
3161 if (!isa<PointerType>(Address->getType()))
3162 return Error(AddrLoc, "indirectbr address must have pointer type");
3164 // Parse the destination list.
3165 SmallVector<BasicBlock*, 16> DestList;
3167 if (Lex.getKind() != lltok::rsquare) {
3169 if (ParseTypeAndBasicBlock(DestBB, PFS))
3171 DestList.push_back(DestBB);
3173 while (EatIfPresent(lltok::comma)) {
3174 if (ParseTypeAndBasicBlock(DestBB, PFS))
3176 DestList.push_back(DestBB);
3180 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
3183 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
3184 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
3185 IBI->addDestination(DestList[i]);
3192 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3193 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3194 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3195 LocTy CallLoc = Lex.getLoc();
3196 unsigned RetAttrs, FnAttrs;
3198 PATypeHolder RetType(Type::getVoidTy(Context));
3201 SmallVector<ParamInfo, 16> ArgList;
3203 BasicBlock *NormalBB, *UnwindBB;
3204 if (ParseOptionalCallingConv(CC) ||
3205 ParseOptionalAttrs(RetAttrs, 1) ||
3206 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3207 ParseValID(CalleeID) ||
3208 ParseParameterList(ArgList, PFS) ||
3209 ParseOptionalAttrs(FnAttrs, 2) ||
3210 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3211 ParseTypeAndBasicBlock(NormalBB, PFS) ||
3212 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3213 ParseTypeAndBasicBlock(UnwindBB, PFS))
3216 // If RetType is a non-function pointer type, then this is the short syntax
3217 // for the call, which means that RetType is just the return type. Infer the
3218 // rest of the function argument types from the arguments that are present.
3219 const PointerType *PFTy = 0;
3220 const FunctionType *Ty = 0;
3221 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3222 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3223 // Pull out the types of all of the arguments...
3224 std::vector<const Type*> ParamTypes;
3225 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3226 ParamTypes.push_back(ArgList[i].V->getType());
3228 if (!FunctionType::isValidReturnType(RetType))
3229 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3231 Ty = FunctionType::get(RetType, ParamTypes, false);
3232 PFTy = PointerType::getUnqual(Ty);
3235 // Look up the callee.
3237 if (ConvertValIDToValue(PFTy, CalleeID, Callee, PFS)) return true;
3239 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
3240 // function attributes.
3241 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
3242 if (FnAttrs & ObsoleteFuncAttrs) {
3243 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
3244 FnAttrs &= ~ObsoleteFuncAttrs;
3247 // Set up the Attributes for the function.
3248 SmallVector<AttributeWithIndex, 8> Attrs;
3249 if (RetAttrs != Attribute::None)
3250 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3252 SmallVector<Value*, 8> Args;
3254 // Loop through FunctionType's arguments and ensure they are specified
3255 // correctly. Also, gather any parameter attributes.
3256 FunctionType::param_iterator I = Ty->param_begin();
3257 FunctionType::param_iterator E = Ty->param_end();
3258 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3259 const Type *ExpectedTy = 0;
3262 } else if (!Ty->isVarArg()) {
3263 return Error(ArgList[i].Loc, "too many arguments specified");
3266 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3267 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3268 ExpectedTy->getDescription() + "'");
3269 Args.push_back(ArgList[i].V);
3270 if (ArgList[i].Attrs != Attribute::None)
3271 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3275 return Error(CallLoc, "not enough parameters specified for call");
3277 if (FnAttrs != Attribute::None)
3278 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3280 // Finish off the Attributes and check them
3281 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3283 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB,
3284 Args.begin(), Args.end());
3285 II->setCallingConv(CC);
3286 II->setAttributes(PAL);
3293 //===----------------------------------------------------------------------===//
3294 // Binary Operators.
3295 //===----------------------------------------------------------------------===//
3298 /// ::= ArithmeticOps TypeAndValue ',' Value
3300 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3301 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3302 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3303 unsigned Opc, unsigned OperandType) {
3304 LocTy Loc; Value *LHS, *RHS;
3305 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3306 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3307 ParseValue(LHS->getType(), RHS, PFS))
3311 switch (OperandType) {
3312 default: llvm_unreachable("Unknown operand type!");
3313 case 0: // int or FP.
3314 Valid = LHS->getType()->isIntOrIntVector() ||
3315 LHS->getType()->isFPOrFPVector();
3317 case 1: Valid = LHS->getType()->isIntOrIntVector(); break;
3318 case 2: Valid = LHS->getType()->isFPOrFPVector(); break;
3322 return Error(Loc, "invalid operand type for instruction");
3324 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3329 /// ::= ArithmeticOps TypeAndValue ',' Value {
3330 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3332 LocTy Loc; Value *LHS, *RHS;
3333 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3334 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3335 ParseValue(LHS->getType(), RHS, PFS))
3338 if (!LHS->getType()->isIntOrIntVector())
3339 return Error(Loc,"instruction requires integer or integer vector operands");
3341 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3347 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3348 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3349 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3351 // Parse the integer/fp comparison predicate.
3355 if (ParseCmpPredicate(Pred, Opc) ||
3356 ParseTypeAndValue(LHS, Loc, PFS) ||
3357 ParseToken(lltok::comma, "expected ',' after compare value") ||
3358 ParseValue(LHS->getType(), RHS, PFS))
3361 if (Opc == Instruction::FCmp) {
3362 if (!LHS->getType()->isFPOrFPVector())
3363 return Error(Loc, "fcmp requires floating point operands");
3364 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3366 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
3367 if (!LHS->getType()->isIntOrIntVector() &&
3368 !isa<PointerType>(LHS->getType()))
3369 return Error(Loc, "icmp requires integer operands");
3370 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3375 //===----------------------------------------------------------------------===//
3376 // Other Instructions.
3377 //===----------------------------------------------------------------------===//
3381 /// ::= CastOpc TypeAndValue 'to' Type
3382 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
3384 LocTy Loc; Value *Op;
3385 PATypeHolder DestTy(Type::getVoidTy(Context));
3386 if (ParseTypeAndValue(Op, Loc, PFS) ||
3387 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
3391 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
3392 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
3393 return Error(Loc, "invalid cast opcode for cast from '" +
3394 Op->getType()->getDescription() + "' to '" +
3395 DestTy->getDescription() + "'");
3397 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
3402 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3403 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
3405 Value *Op0, *Op1, *Op2;
3406 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3407 ParseToken(lltok::comma, "expected ',' after select condition") ||
3408 ParseTypeAndValue(Op1, PFS) ||
3409 ParseToken(lltok::comma, "expected ',' after select value") ||
3410 ParseTypeAndValue(Op2, PFS))
3413 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
3414 return Error(Loc, Reason);
3416 Inst = SelectInst::Create(Op0, Op1, Op2);
3421 /// ::= 'va_arg' TypeAndValue ',' Type
3422 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
3424 PATypeHolder EltTy(Type::getVoidTy(Context));
3426 if (ParseTypeAndValue(Op, PFS) ||
3427 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
3428 ParseType(EltTy, TypeLoc))
3431 if (!EltTy->isFirstClassType())
3432 return Error(TypeLoc, "va_arg requires operand with first class type");
3434 Inst = new VAArgInst(Op, EltTy);
3438 /// ParseExtractElement
3439 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
3440 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
3443 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3444 ParseToken(lltok::comma, "expected ',' after extract value") ||
3445 ParseTypeAndValue(Op1, PFS))
3448 if (!ExtractElementInst::isValidOperands(Op0, Op1))
3449 return Error(Loc, "invalid extractelement operands");
3451 Inst = ExtractElementInst::Create(Op0, Op1);
3455 /// ParseInsertElement
3456 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3457 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
3459 Value *Op0, *Op1, *Op2;
3460 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3461 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3462 ParseTypeAndValue(Op1, PFS) ||
3463 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3464 ParseTypeAndValue(Op2, PFS))
3467 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
3468 return Error(Loc, "invalid insertelement operands");
3470 Inst = InsertElementInst::Create(Op0, Op1, Op2);
3474 /// ParseShuffleVector
3475 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3476 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
3478 Value *Op0, *Op1, *Op2;
3479 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3480 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
3481 ParseTypeAndValue(Op1, PFS) ||
3482 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
3483 ParseTypeAndValue(Op2, PFS))
3486 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
3487 return Error(Loc, "invalid extractelement operands");
3489 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
3494 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
3495 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
3496 PATypeHolder Ty(Type::getVoidTy(Context));
3498 LocTy TypeLoc = Lex.getLoc();
3500 if (ParseType(Ty) ||
3501 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3502 ParseValue(Ty, Op0, PFS) ||
3503 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3504 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3505 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3508 bool AteExtraComma = false;
3509 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
3511 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
3513 if (!EatIfPresent(lltok::comma))
3516 if (Lex.getKind() == lltok::MetadataVar) {
3517 AteExtraComma = true;
3521 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3522 ParseValue(Ty, Op0, PFS) ||
3523 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3524 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3525 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3529 if (!Ty->isFirstClassType())
3530 return Error(TypeLoc, "phi node must have first class type");
3532 PHINode *PN = PHINode::Create(Ty);
3533 PN->reserveOperandSpace(PHIVals.size());
3534 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
3535 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
3537 return AteExtraComma ? InstExtraComma : InstNormal;
3541 /// ::= 'tail'? 'call' OptionalCallingConv OptionalAttrs Type Value
3542 /// ParameterList OptionalAttrs
3543 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
3545 unsigned RetAttrs, FnAttrs;
3547 PATypeHolder RetType(Type::getVoidTy(Context));
3550 SmallVector<ParamInfo, 16> ArgList;
3551 LocTy CallLoc = Lex.getLoc();
3553 if ((isTail && ParseToken(lltok::kw_call, "expected 'tail call'")) ||
3554 ParseOptionalCallingConv(CC) ||
3555 ParseOptionalAttrs(RetAttrs, 1) ||
3556 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3557 ParseValID(CalleeID) ||
3558 ParseParameterList(ArgList, PFS) ||
3559 ParseOptionalAttrs(FnAttrs, 2))
3562 // If RetType is a non-function pointer type, then this is the short syntax
3563 // for the call, which means that RetType is just the return type. Infer the
3564 // rest of the function argument types from the arguments that are present.
3565 const PointerType *PFTy = 0;
3566 const FunctionType *Ty = 0;
3567 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3568 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3569 // Pull out the types of all of the arguments...
3570 std::vector<const Type*> ParamTypes;
3571 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3572 ParamTypes.push_back(ArgList[i].V->getType());
3574 if (!FunctionType::isValidReturnType(RetType))
3575 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3577 Ty = FunctionType::get(RetType, ParamTypes, false);
3578 PFTy = PointerType::getUnqual(Ty);
3581 // Look up the callee.
3583 if (ConvertValIDToValue(PFTy, CalleeID, Callee, PFS)) return true;
3585 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
3586 // function attributes.
3587 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
3588 if (FnAttrs & ObsoleteFuncAttrs) {
3589 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
3590 FnAttrs &= ~ObsoleteFuncAttrs;
3593 // Set up the Attributes for the function.
3594 SmallVector<AttributeWithIndex, 8> Attrs;
3595 if (RetAttrs != Attribute::None)
3596 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3598 SmallVector<Value*, 8> Args;
3600 // Loop through FunctionType's arguments and ensure they are specified
3601 // correctly. Also, gather any parameter attributes.
3602 FunctionType::param_iterator I = Ty->param_begin();
3603 FunctionType::param_iterator E = Ty->param_end();
3604 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3605 const Type *ExpectedTy = 0;
3608 } else if (!Ty->isVarArg()) {
3609 return Error(ArgList[i].Loc, "too many arguments specified");
3612 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3613 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3614 ExpectedTy->getDescription() + "'");
3615 Args.push_back(ArgList[i].V);
3616 if (ArgList[i].Attrs != Attribute::None)
3617 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3621 return Error(CallLoc, "not enough parameters specified for call");
3623 if (FnAttrs != Attribute::None)
3624 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3626 // Finish off the Attributes and check them
3627 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3629 CallInst *CI = CallInst::Create(Callee, Args.begin(), Args.end());
3630 CI->setTailCall(isTail);
3631 CI->setCallingConv(CC);
3632 CI->setAttributes(PAL);
3637 //===----------------------------------------------------------------------===//
3638 // Memory Instructions.
3639 //===----------------------------------------------------------------------===//
3642 /// ::= 'malloc' Type (',' TypeAndValue)? (',' OptionalInfo)?
3643 /// ::= 'alloca' Type (',' TypeAndValue)? (',' OptionalInfo)?
3644 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS,
3645 BasicBlock* BB, bool isAlloca) {
3646 PATypeHolder Ty(Type::getVoidTy(Context));
3649 unsigned Alignment = 0;
3650 if (ParseType(Ty)) return true;
3652 bool AteExtraComma = false;
3653 if (EatIfPresent(lltok::comma)) {
3654 if (Lex.getKind() == lltok::kw_align) {
3655 if (ParseOptionalAlignment(Alignment)) return true;
3656 } else if (Lex.getKind() == lltok::MetadataVar) {
3657 AteExtraComma = true;
3659 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
3660 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3665 if (Size && !Size->getType()->isInteger(32))
3666 return Error(SizeLoc, "element count must be i32");
3669 Inst = new AllocaInst(Ty, Size, Alignment);
3670 return AteExtraComma ? InstExtraComma : InstNormal;
3673 // Autoupgrade old malloc instruction to malloc call.
3674 // FIXME: Remove in LLVM 3.0.
3675 const Type *IntPtrTy = Type::getInt32Ty(Context);
3676 Constant *AllocSize = ConstantExpr::getSizeOf(Ty);
3677 AllocSize = ConstantExpr::getTruncOrBitCast(AllocSize, IntPtrTy);
3679 // Prototype malloc as "void *(int32)".
3680 // This function is renamed as "malloc" in ValidateEndOfModule().
3681 MallocF = cast<Function>(
3682 M->getOrInsertFunction("", Type::getInt8PtrTy(Context), IntPtrTy, NULL));
3683 Inst = CallInst::CreateMalloc(BB, IntPtrTy, Ty, AllocSize, Size, MallocF);
3684 return AteExtraComma ? InstExtraComma : InstNormal;
3688 /// ::= 'free' TypeAndValue
3689 bool LLParser::ParseFree(Instruction *&Inst, PerFunctionState &PFS,
3691 Value *Val; LocTy Loc;
3692 if (ParseTypeAndValue(Val, Loc, PFS)) return true;
3693 if (!isa<PointerType>(Val->getType()))
3694 return Error(Loc, "operand to free must be a pointer");
3695 Inst = CallInst::CreateFree(Val, BB);
3700 /// ::= 'volatile'? 'load' TypeAndValue (',' OptionalInfo)?
3701 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS,
3703 Value *Val; LocTy Loc;
3704 unsigned Alignment = 0;
3705 bool AteExtraComma = false;
3706 if (ParseTypeAndValue(Val, Loc, PFS) ||
3707 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3710 if (!isa<PointerType>(Val->getType()) ||
3711 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
3712 return Error(Loc, "load operand must be a pointer to a first class type");
3714 Inst = new LoadInst(Val, "", isVolatile, Alignment);
3715 return AteExtraComma ? InstExtraComma : InstNormal;
3719 /// ::= 'volatile'? 'store' TypeAndValue ',' TypeAndValue (',' 'align' i32)?
3720 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS,
3722 Value *Val, *Ptr; LocTy Loc, PtrLoc;
3723 unsigned Alignment = 0;
3724 bool AteExtraComma = false;
3725 if (ParseTypeAndValue(Val, Loc, PFS) ||
3726 ParseToken(lltok::comma, "expected ',' after store operand") ||
3727 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
3728 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3731 if (!isa<PointerType>(Ptr->getType()))
3732 return Error(PtrLoc, "store operand must be a pointer");
3733 if (!Val->getType()->isFirstClassType())
3734 return Error(Loc, "store operand must be a first class value");
3735 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
3736 return Error(Loc, "stored value and pointer type do not match");
3738 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment);
3739 return AteExtraComma ? InstExtraComma : InstNormal;
3743 /// ::= 'getresult' TypeAndValue ',' i32
3744 /// FIXME: Remove support for getresult in LLVM 3.0
3745 bool LLParser::ParseGetResult(Instruction *&Inst, PerFunctionState &PFS) {
3746 Value *Val; LocTy ValLoc, EltLoc;
3748 if (ParseTypeAndValue(Val, ValLoc, PFS) ||
3749 ParseToken(lltok::comma, "expected ',' after getresult operand") ||
3750 ParseUInt32(Element, EltLoc))
3753 if (!isa<StructType>(Val->getType()) && !isa<ArrayType>(Val->getType()))
3754 return Error(ValLoc, "getresult inst requires an aggregate operand");
3755 if (!ExtractValueInst::getIndexedType(Val->getType(), Element))
3756 return Error(EltLoc, "invalid getresult index for value");
3757 Inst = ExtractValueInst::Create(Val, Element);
3761 /// ParseGetElementPtr
3762 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
3763 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
3764 Value *Ptr, *Val; LocTy Loc, EltLoc;
3766 bool InBounds = EatIfPresent(lltok::kw_inbounds);
3768 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
3770 if (!isa<PointerType>(Ptr->getType()))
3771 return Error(Loc, "base of getelementptr must be a pointer");
3773 SmallVector<Value*, 16> Indices;
3774 bool AteExtraComma = false;
3775 while (EatIfPresent(lltok::comma)) {
3776 if (Lex.getKind() == lltok::MetadataVar) {
3777 AteExtraComma = true;
3780 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
3781 if (!isa<IntegerType>(Val->getType()))
3782 return Error(EltLoc, "getelementptr index must be an integer");
3783 Indices.push_back(Val);
3786 if (!GetElementPtrInst::getIndexedType(Ptr->getType(),
3787 Indices.begin(), Indices.end()))
3788 return Error(Loc, "invalid getelementptr indices");
3789 Inst = GetElementPtrInst::Create(Ptr, Indices.begin(), Indices.end());
3791 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
3792 return AteExtraComma ? InstExtraComma : InstNormal;
3795 /// ParseExtractValue
3796 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
3797 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
3798 Value *Val; LocTy Loc;
3799 SmallVector<unsigned, 4> Indices;
3801 if (ParseTypeAndValue(Val, Loc, PFS) ||
3802 ParseIndexList(Indices, AteExtraComma))
3805 if (!isa<StructType>(Val->getType()) && !isa<ArrayType>(Val->getType()))
3806 return Error(Loc, "extractvalue operand must be array or struct");
3808 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
3810 return Error(Loc, "invalid indices for extractvalue");
3811 Inst = ExtractValueInst::Create(Val, Indices.begin(), Indices.end());
3812 return AteExtraComma ? InstExtraComma : InstNormal;
3815 /// ParseInsertValue
3816 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
3817 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
3818 Value *Val0, *Val1; LocTy Loc0, Loc1;
3819 SmallVector<unsigned, 4> Indices;
3821 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
3822 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
3823 ParseTypeAndValue(Val1, Loc1, PFS) ||
3824 ParseIndexList(Indices, AteExtraComma))
3827 if (!isa<StructType>(Val0->getType()) && !isa<ArrayType>(Val0->getType()))
3828 return Error(Loc0, "extractvalue operand must be array or struct");
3830 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
3832 return Error(Loc0, "invalid indices for insertvalue");
3833 Inst = InsertValueInst::Create(Val0, Val1, Indices.begin(), Indices.end());
3834 return AteExtraComma ? InstExtraComma : InstNormal;
3837 //===----------------------------------------------------------------------===//
3838 // Embedded metadata.
3839 //===----------------------------------------------------------------------===//
3841 /// ParseMDNodeVector
3842 /// ::= Element (',' Element)*
3844 /// ::= 'null' | TypeAndValue
3845 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts) {
3847 // Null is a special case since it is typeless.
3848 if (EatIfPresent(lltok::kw_null)) {
3854 PATypeHolder Ty(Type::getVoidTy(Context));
3856 if (ParseType(Ty) || ParseValID(ID) ||
3857 ConvertGlobalOrMetadataValIDToValue(Ty, ID, V))
3861 } while (EatIfPresent(lltok::comma));