1 //===-- LLParser.cpp - Parser Class ---------------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines the parser class for .ll files.
12 //===----------------------------------------------------------------------===//
15 #include "llvm/AutoUpgrade.h"
16 #include "llvm/CallingConv.h"
17 #include "llvm/Constants.h"
18 #include "llvm/DerivedTypes.h"
19 #include "llvm/InlineAsm.h"
20 #include "llvm/Instructions.h"
21 #include "llvm/LLVMContext.h"
22 #include "llvm/Metadata.h"
23 #include "llvm/Module.h"
24 #include "llvm/Operator.h"
25 #include "llvm/ValueSymbolTable.h"
26 #include "llvm/ADT/SmallPtrSet.h"
27 #include "llvm/ADT/StringExtras.h"
28 #include "llvm/Support/ErrorHandling.h"
29 #include "llvm/Support/raw_ostream.h"
32 /// Run: module ::= toplevelentity*
33 bool LLParser::Run() {
37 return ParseTopLevelEntities() ||
38 ValidateEndOfModule();
41 /// ValidateEndOfModule - Do final validity and sanity checks at the end of the
43 bool LLParser::ValidateEndOfModule() {
44 // Update auto-upgraded malloc calls to "malloc".
45 // FIXME: Remove in LLVM 3.0.
47 MallocF->setName("malloc");
48 // If setName() does not set the name to "malloc", then there is already a
49 // declaration of "malloc". In that case, iterate over all calls to MallocF
50 // and get them to call the declared "malloc" instead.
51 if (MallocF->getName() != "malloc") {
52 Constant *RealMallocF = M->getFunction("malloc");
53 if (RealMallocF->getType() != MallocF->getType())
54 RealMallocF = ConstantExpr::getBitCast(RealMallocF, MallocF->getType());
55 MallocF->replaceAllUsesWith(RealMallocF);
56 MallocF->eraseFromParent();
62 // If there are entries in ForwardRefBlockAddresses at this point, they are
63 // references after the function was defined. Resolve those now.
64 while (!ForwardRefBlockAddresses.empty()) {
65 // Okay, we are referencing an already-parsed function, resolve them now.
67 const ValID &Fn = ForwardRefBlockAddresses.begin()->first;
68 if (Fn.Kind == ValID::t_GlobalName)
69 TheFn = M->getFunction(Fn.StrVal);
70 else if (Fn.UIntVal < NumberedVals.size())
71 TheFn = dyn_cast<Function>(NumberedVals[Fn.UIntVal]);
74 return Error(Fn.Loc, "unknown function referenced by blockaddress");
76 // Resolve all these references.
77 if (ResolveForwardRefBlockAddresses(TheFn,
78 ForwardRefBlockAddresses.begin()->second,
82 ForwardRefBlockAddresses.erase(ForwardRefBlockAddresses.begin());
86 if (!ForwardRefTypes.empty())
87 return Error(ForwardRefTypes.begin()->second.second,
88 "use of undefined type named '" +
89 ForwardRefTypes.begin()->first + "'");
90 if (!ForwardRefTypeIDs.empty())
91 return Error(ForwardRefTypeIDs.begin()->second.second,
92 "use of undefined type '%" +
93 utostr(ForwardRefTypeIDs.begin()->first) + "'");
95 if (!ForwardRefVals.empty())
96 return Error(ForwardRefVals.begin()->second.second,
97 "use of undefined value '@" + ForwardRefVals.begin()->first +
100 if (!ForwardRefValIDs.empty())
101 return Error(ForwardRefValIDs.begin()->second.second,
102 "use of undefined value '@" +
103 utostr(ForwardRefValIDs.begin()->first) + "'");
105 if (!ForwardRefMDNodes.empty())
106 return Error(ForwardRefMDNodes.begin()->second.second,
107 "use of undefined metadata '!" +
108 utostr(ForwardRefMDNodes.begin()->first) + "'");
111 // Look for intrinsic functions and CallInst that need to be upgraded
112 for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; )
113 UpgradeCallsToIntrinsic(FI++); // must be post-increment, as we remove
115 // Check debug info intrinsics.
116 CheckDebugInfoIntrinsics(M);
120 bool LLParser::ResolveForwardRefBlockAddresses(Function *TheFn,
121 std::vector<std::pair<ValID, GlobalValue*> > &Refs,
122 PerFunctionState *PFS) {
123 // Loop over all the references, resolving them.
124 for (unsigned i = 0, e = Refs.size(); i != e; ++i) {
127 if (Refs[i].first.Kind == ValID::t_LocalName)
128 Res = PFS->GetBB(Refs[i].first.StrVal, Refs[i].first.Loc);
130 Res = PFS->GetBB(Refs[i].first.UIntVal, Refs[i].first.Loc);
131 } else if (Refs[i].first.Kind == ValID::t_LocalID) {
132 return Error(Refs[i].first.Loc,
133 "cannot take address of numeric label after the function is defined");
135 Res = dyn_cast_or_null<BasicBlock>(
136 TheFn->getValueSymbolTable().lookup(Refs[i].first.StrVal));
140 return Error(Refs[i].first.Loc,
141 "referenced value is not a basic block");
143 // Get the BlockAddress for this and update references to use it.
144 BlockAddress *BA = BlockAddress::get(TheFn, Res);
145 Refs[i].second->replaceAllUsesWith(BA);
146 Refs[i].second->eraseFromParent();
152 //===----------------------------------------------------------------------===//
153 // Top-Level Entities
154 //===----------------------------------------------------------------------===//
156 bool LLParser::ParseTopLevelEntities() {
158 switch (Lex.getKind()) {
159 default: return TokError("expected top-level entity");
160 case lltok::Eof: return false;
161 //case lltok::kw_define:
162 case lltok::kw_declare: if (ParseDeclare()) return true; break;
163 case lltok::kw_define: if (ParseDefine()) return true; break;
164 case lltok::kw_module: if (ParseModuleAsm()) return true; break;
165 case lltok::kw_target: if (ParseTargetDefinition()) return true; break;
166 case lltok::kw_deplibs: if (ParseDepLibs()) return true; break;
167 case lltok::kw_type: if (ParseUnnamedType()) return true; break;
168 case lltok::LocalVarID: if (ParseUnnamedType()) return true; break;
169 case lltok::StringConstant: // FIXME: REMOVE IN LLVM 3.0
170 case lltok::LocalVar: if (ParseNamedType()) return true; break;
171 case lltok::GlobalID: if (ParseUnnamedGlobal()) return true; break;
172 case lltok::GlobalVar: if (ParseNamedGlobal()) return true; break;
173 case lltok::Metadata: if (ParseStandaloneMetadata()) return true; break;
174 case lltok::NamedOrCustomMD: if (ParseNamedMetadata()) return true; break;
176 // The Global variable production with no name can have many different
177 // optional leading prefixes, the production is:
178 // GlobalVar ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
179 // OptionalAddrSpace ('constant'|'global') ...
180 case lltok::kw_private : // OptionalLinkage
181 case lltok::kw_linker_private: // OptionalLinkage
182 case lltok::kw_internal: // OptionalLinkage
183 case lltok::kw_weak: // OptionalLinkage
184 case lltok::kw_weak_odr: // OptionalLinkage
185 case lltok::kw_linkonce: // OptionalLinkage
186 case lltok::kw_linkonce_odr: // OptionalLinkage
187 case lltok::kw_appending: // OptionalLinkage
188 case lltok::kw_dllexport: // OptionalLinkage
189 case lltok::kw_common: // OptionalLinkage
190 case lltok::kw_dllimport: // OptionalLinkage
191 case lltok::kw_extern_weak: // OptionalLinkage
192 case lltok::kw_external: { // OptionalLinkage
193 unsigned Linkage, Visibility;
194 if (ParseOptionalLinkage(Linkage) ||
195 ParseOptionalVisibility(Visibility) ||
196 ParseGlobal("", SMLoc(), Linkage, true, Visibility))
200 case lltok::kw_default: // OptionalVisibility
201 case lltok::kw_hidden: // OptionalVisibility
202 case lltok::kw_protected: { // OptionalVisibility
204 if (ParseOptionalVisibility(Visibility) ||
205 ParseGlobal("", SMLoc(), 0, false, Visibility))
210 case lltok::kw_thread_local: // OptionalThreadLocal
211 case lltok::kw_addrspace: // OptionalAddrSpace
212 case lltok::kw_constant: // GlobalType
213 case lltok::kw_global: // GlobalType
214 if (ParseGlobal("", SMLoc(), 0, false, 0)) return true;
222 /// ::= 'module' 'asm' STRINGCONSTANT
223 bool LLParser::ParseModuleAsm() {
224 assert(Lex.getKind() == lltok::kw_module);
228 if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
229 ParseStringConstant(AsmStr)) return true;
231 const std::string &AsmSoFar = M->getModuleInlineAsm();
232 if (AsmSoFar.empty())
233 M->setModuleInlineAsm(AsmStr);
235 M->setModuleInlineAsm(AsmSoFar+"\n"+AsmStr);
240 /// ::= 'target' 'triple' '=' STRINGCONSTANT
241 /// ::= 'target' 'datalayout' '=' STRINGCONSTANT
242 bool LLParser::ParseTargetDefinition() {
243 assert(Lex.getKind() == lltok::kw_target);
246 default: return TokError("unknown target property");
247 case lltok::kw_triple:
249 if (ParseToken(lltok::equal, "expected '=' after target triple") ||
250 ParseStringConstant(Str))
252 M->setTargetTriple(Str);
254 case lltok::kw_datalayout:
256 if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
257 ParseStringConstant(Str))
259 M->setDataLayout(Str);
265 /// ::= 'deplibs' '=' '[' ']'
266 /// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
267 bool LLParser::ParseDepLibs() {
268 assert(Lex.getKind() == lltok::kw_deplibs);
270 if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
271 ParseToken(lltok::lsquare, "expected '=' after deplibs"))
274 if (EatIfPresent(lltok::rsquare))
278 if (ParseStringConstant(Str)) return true;
281 while (EatIfPresent(lltok::comma)) {
282 if (ParseStringConstant(Str)) return true;
286 return ParseToken(lltok::rsquare, "expected ']' at end of list");
289 /// ParseUnnamedType:
291 /// ::= LocalVarID '=' 'type' type
292 bool LLParser::ParseUnnamedType() {
293 unsigned TypeID = NumberedTypes.size();
295 // Handle the LocalVarID form.
296 if (Lex.getKind() == lltok::LocalVarID) {
297 if (Lex.getUIntVal() != TypeID)
298 return Error(Lex.getLoc(), "type expected to be numbered '%" +
299 utostr(TypeID) + "'");
300 Lex.Lex(); // eat LocalVarID;
302 if (ParseToken(lltok::equal, "expected '=' after name"))
306 assert(Lex.getKind() == lltok::kw_type);
307 LocTy TypeLoc = Lex.getLoc();
308 Lex.Lex(); // eat kw_type
310 PATypeHolder Ty(Type::getVoidTy(Context));
311 if (ParseType(Ty)) return true;
313 // See if this type was previously referenced.
314 std::map<unsigned, std::pair<PATypeHolder, LocTy> >::iterator
315 FI = ForwardRefTypeIDs.find(TypeID);
316 if (FI != ForwardRefTypeIDs.end()) {
317 if (FI->second.first.get() == Ty)
318 return Error(TypeLoc, "self referential type is invalid");
320 cast<DerivedType>(FI->second.first.get())->refineAbstractTypeTo(Ty);
321 Ty = FI->second.first.get();
322 ForwardRefTypeIDs.erase(FI);
325 NumberedTypes.push_back(Ty);
331 /// ::= LocalVar '=' 'type' type
332 bool LLParser::ParseNamedType() {
333 std::string Name = Lex.getStrVal();
334 LocTy NameLoc = Lex.getLoc();
335 Lex.Lex(); // eat LocalVar.
337 PATypeHolder Ty(Type::getVoidTy(Context));
339 if (ParseToken(lltok::equal, "expected '=' after name") ||
340 ParseToken(lltok::kw_type, "expected 'type' after name") ||
344 // Set the type name, checking for conflicts as we do so.
345 bool AlreadyExists = M->addTypeName(Name, Ty);
346 if (!AlreadyExists) return false;
348 // See if this type is a forward reference. We need to eagerly resolve
349 // types to allow recursive type redefinitions below.
350 std::map<std::string, std::pair<PATypeHolder, LocTy> >::iterator
351 FI = ForwardRefTypes.find(Name);
352 if (FI != ForwardRefTypes.end()) {
353 if (FI->second.first.get() == Ty)
354 return Error(NameLoc, "self referential type is invalid");
356 cast<DerivedType>(FI->second.first.get())->refineAbstractTypeTo(Ty);
357 Ty = FI->second.first.get();
358 ForwardRefTypes.erase(FI);
361 // Inserting a name that is already defined, get the existing name.
362 const Type *Existing = M->getTypeByName(Name);
363 assert(Existing && "Conflict but no matching type?!");
365 // Otherwise, this is an attempt to redefine a type. That's okay if
366 // the redefinition is identical to the original.
367 // FIXME: REMOVE REDEFINITIONS IN LLVM 3.0
368 if (Existing == Ty) return false;
370 // Any other kind of (non-equivalent) redefinition is an error.
371 return Error(NameLoc, "redefinition of type named '" + Name + "' of type '" +
372 Ty->getDescription() + "'");
377 /// ::= 'declare' FunctionHeader
378 bool LLParser::ParseDeclare() {
379 assert(Lex.getKind() == lltok::kw_declare);
383 return ParseFunctionHeader(F, false);
387 /// ::= 'define' FunctionHeader '{' ...
388 bool LLParser::ParseDefine() {
389 assert(Lex.getKind() == lltok::kw_define);
393 return ParseFunctionHeader(F, true) ||
394 ParseFunctionBody(*F);
400 bool LLParser::ParseGlobalType(bool &IsConstant) {
401 if (Lex.getKind() == lltok::kw_constant)
403 else if (Lex.getKind() == lltok::kw_global)
407 return TokError("expected 'global' or 'constant'");
413 /// ParseUnnamedGlobal:
414 /// OptionalVisibility ALIAS ...
415 /// OptionalLinkage OptionalVisibility ... -> global variable
416 /// GlobalID '=' OptionalVisibility ALIAS ...
417 /// GlobalID '=' OptionalLinkage OptionalVisibility ... -> global variable
418 bool LLParser::ParseUnnamedGlobal() {
419 unsigned VarID = NumberedVals.size();
421 LocTy NameLoc = Lex.getLoc();
423 // Handle the GlobalID form.
424 if (Lex.getKind() == lltok::GlobalID) {
425 if (Lex.getUIntVal() != VarID)
426 return Error(Lex.getLoc(), "variable expected to be numbered '%" +
427 utostr(VarID) + "'");
428 Lex.Lex(); // eat GlobalID;
430 if (ParseToken(lltok::equal, "expected '=' after name"))
435 unsigned Linkage, Visibility;
436 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
437 ParseOptionalVisibility(Visibility))
440 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
441 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
442 return ParseAlias(Name, NameLoc, Visibility);
445 /// ParseNamedGlobal:
446 /// GlobalVar '=' OptionalVisibility ALIAS ...
447 /// GlobalVar '=' OptionalLinkage OptionalVisibility ... -> global variable
448 bool LLParser::ParseNamedGlobal() {
449 assert(Lex.getKind() == lltok::GlobalVar);
450 LocTy NameLoc = Lex.getLoc();
451 std::string Name = Lex.getStrVal();
455 unsigned Linkage, Visibility;
456 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
457 ParseOptionalLinkage(Linkage, HasLinkage) ||
458 ParseOptionalVisibility(Visibility))
461 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
462 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
463 return ParseAlias(Name, NameLoc, Visibility);
467 // ::= '!' STRINGCONSTANT
468 bool LLParser::ParseMDString(MetadataBase *&MDS) {
470 if (ParseStringConstant(Str)) return true;
471 MDS = MDString::get(Context, Str);
476 // ::= '!' MDNodeNumber
477 bool LLParser::ParseMDNode(MetadataBase *&Node) {
478 // !{ ..., !42, ... }
480 if (ParseUInt32(MID)) return true;
482 // Check existing MDNode.
483 std::map<unsigned, WeakVH>::iterator I = MetadataCache.find(MID);
484 if (I != MetadataCache.end()) {
485 Node = cast<MetadataBase>(I->second);
489 // Check known forward references.
490 std::map<unsigned, std::pair<WeakVH, LocTy> >::iterator
491 FI = ForwardRefMDNodes.find(MID);
492 if (FI != ForwardRefMDNodes.end()) {
493 Node = cast<MetadataBase>(FI->second.first);
497 // Create MDNode forward reference
498 SmallVector<Value *, 1> Elts;
499 std::string FwdRefName = "llvm.mdnode.fwdref." + utostr(MID);
500 Elts.push_back(MDString::get(Context, FwdRefName));
501 MDNode *FwdNode = MDNode::get(Context, Elts.data(), Elts.size());
502 ForwardRefMDNodes[MID] = std::make_pair(FwdNode, Lex.getLoc());
507 ///ParseNamedMetadata:
508 /// !foo = !{ !1, !2 }
509 bool LLParser::ParseNamedMetadata() {
510 assert(Lex.getKind() == lltok::NamedOrCustomMD);
512 std::string Name = Lex.getStrVal();
514 if (ParseToken(lltok::equal, "expected '=' here"))
517 if (Lex.getKind() != lltok::Metadata)
518 return TokError("Expected '!' here");
521 if (Lex.getKind() != lltok::lbrace)
522 return TokError("Expected '{' here");
524 SmallVector<MetadataBase *, 8> Elts;
526 if (Lex.getKind() != lltok::Metadata)
527 return TokError("Expected '!' here");
530 if (ParseMDNode(N)) return true;
532 } while (EatIfPresent(lltok::comma));
534 if (ParseToken(lltok::rbrace, "expected end of metadata node"))
537 NamedMDNode::Create(Context, Name, Elts.data(), Elts.size(), M);
541 /// ParseStandaloneMetadata:
543 bool LLParser::ParseStandaloneMetadata() {
544 assert(Lex.getKind() == lltok::Metadata);
546 unsigned MetadataID = 0;
547 if (ParseUInt32(MetadataID))
549 if (MetadataCache.find(MetadataID) != MetadataCache.end())
550 return TokError("Metadata id is already used");
551 if (ParseToken(lltok::equal, "expected '=' here"))
555 PATypeHolder Ty(Type::getVoidTy(Context));
556 if (ParseType(Ty, TyLoc))
559 if (Lex.getKind() != lltok::Metadata)
560 return TokError("Expected metadata here");
563 if (Lex.getKind() != lltok::lbrace)
564 return TokError("Expected '{' here");
566 SmallVector<Value *, 16> Elts;
567 if (ParseMDNodeVector(Elts)
568 || ParseToken(lltok::rbrace, "expected end of metadata node"))
571 MDNode *Init = MDNode::get(Context, Elts.data(), Elts.size());
572 MetadataCache[MetadataID] = Init;
573 std::map<unsigned, std::pair<WeakVH, LocTy> >::iterator
574 FI = ForwardRefMDNodes.find(MetadataID);
575 if (FI != ForwardRefMDNodes.end()) {
576 MDNode *FwdNode = cast<MDNode>(FI->second.first);
577 FwdNode->replaceAllUsesWith(Init);
578 ForwardRefMDNodes.erase(FI);
584 /// ParseInlineMetadata:
588 bool LLParser::ParseInlineMetadata(Value *&V, PerFunctionState &PFS) {
589 assert(Lex.getKind() == lltok::Metadata && "Only for Metadata");
593 if (Lex.getKind() == lltok::lbrace) {
595 if (ParseTypeAndValue(V, PFS) ||
596 ParseToken(lltok::rbrace, "expected end of metadata node"))
599 Value *Vals[] = { V };
600 V = MDNode::get(Context, Vals, 1);
604 // Standalone metadata reference
605 // !{ ..., !42, ... }
606 if (!ParseMDNode((MetadataBase *&)V))
610 // '!' STRINGCONSTANT
611 if (ParseMDString((MetadataBase *&)V)) return true;
616 /// ::= GlobalVar '=' OptionalVisibility 'alias' OptionalLinkage Aliasee
619 /// ::= 'bitcast' '(' TypeAndValue 'to' Type ')'
620 /// ::= 'getelementptr' 'inbounds'? '(' ... ')'
622 /// Everything through visibility has already been parsed.
624 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc,
625 unsigned Visibility) {
626 assert(Lex.getKind() == lltok::kw_alias);
629 LocTy LinkageLoc = Lex.getLoc();
630 if (ParseOptionalLinkage(Linkage))
633 if (Linkage != GlobalValue::ExternalLinkage &&
634 Linkage != GlobalValue::WeakAnyLinkage &&
635 Linkage != GlobalValue::WeakODRLinkage &&
636 Linkage != GlobalValue::InternalLinkage &&
637 Linkage != GlobalValue::PrivateLinkage &&
638 Linkage != GlobalValue::LinkerPrivateLinkage)
639 return Error(LinkageLoc, "invalid linkage type for alias");
642 LocTy AliaseeLoc = Lex.getLoc();
643 if (Lex.getKind() != lltok::kw_bitcast &&
644 Lex.getKind() != lltok::kw_getelementptr) {
645 if (ParseGlobalTypeAndValue(Aliasee)) return true;
647 // The bitcast dest type is not present, it is implied by the dest type.
649 if (ParseValID(ID)) return true;
650 if (ID.Kind != ValID::t_Constant)
651 return Error(AliaseeLoc, "invalid aliasee");
652 Aliasee = ID.ConstantVal;
655 if (!isa<PointerType>(Aliasee->getType()))
656 return Error(AliaseeLoc, "alias must have pointer type");
658 // Okay, create the alias but do not insert it into the module yet.
659 GlobalAlias* GA = new GlobalAlias(Aliasee->getType(),
660 (GlobalValue::LinkageTypes)Linkage, Name,
662 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
664 // See if this value already exists in the symbol table. If so, it is either
665 // a redefinition or a definition of a forward reference.
666 if (GlobalValue *Val = M->getNamedValue(Name)) {
667 // See if this was a redefinition. If so, there is no entry in
669 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
670 I = ForwardRefVals.find(Name);
671 if (I == ForwardRefVals.end())
672 return Error(NameLoc, "redefinition of global named '@" + Name + "'");
674 // Otherwise, this was a definition of forward ref. Verify that types
676 if (Val->getType() != GA->getType())
677 return Error(NameLoc,
678 "forward reference and definition of alias have different types");
680 // If they agree, just RAUW the old value with the alias and remove the
682 Val->replaceAllUsesWith(GA);
683 Val->eraseFromParent();
684 ForwardRefVals.erase(I);
687 // Insert into the module, we know its name won't collide now.
688 M->getAliasList().push_back(GA);
689 assert(GA->getNameStr() == Name && "Should not be a name conflict!");
695 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalThreadLocal
696 /// OptionalAddrSpace GlobalType Type Const
697 /// ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
698 /// OptionalAddrSpace GlobalType Type Const
700 /// Everything through visibility has been parsed already.
702 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
703 unsigned Linkage, bool HasLinkage,
704 unsigned Visibility) {
706 bool ThreadLocal, IsConstant;
709 PATypeHolder Ty(Type::getVoidTy(Context));
710 if (ParseOptionalToken(lltok::kw_thread_local, ThreadLocal) ||
711 ParseOptionalAddrSpace(AddrSpace) ||
712 ParseGlobalType(IsConstant) ||
713 ParseType(Ty, TyLoc))
716 // If the linkage is specified and is external, then no initializer is
719 if (!HasLinkage || (Linkage != GlobalValue::DLLImportLinkage &&
720 Linkage != GlobalValue::ExternalWeakLinkage &&
721 Linkage != GlobalValue::ExternalLinkage)) {
722 if (ParseGlobalValue(Ty, Init))
726 if (isa<FunctionType>(Ty) || Ty->isLabelTy())
727 return Error(TyLoc, "invalid type for global variable");
729 GlobalVariable *GV = 0;
731 // See if the global was forward referenced, if so, use the global.
733 if (GlobalValue *GVal = M->getNamedValue(Name)) {
734 if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
735 return Error(NameLoc, "redefinition of global '@" + Name + "'");
736 GV = cast<GlobalVariable>(GVal);
739 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
740 I = ForwardRefValIDs.find(NumberedVals.size());
741 if (I != ForwardRefValIDs.end()) {
742 GV = cast<GlobalVariable>(I->second.first);
743 ForwardRefValIDs.erase(I);
748 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, 0,
749 Name, 0, false, AddrSpace);
751 if (GV->getType()->getElementType() != Ty)
753 "forward reference and definition of global have different types");
755 // Move the forward-reference to the correct spot in the module.
756 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
760 NumberedVals.push_back(GV);
762 // Set the parsed properties on the global.
764 GV->setInitializer(Init);
765 GV->setConstant(IsConstant);
766 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
767 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
768 GV->setThreadLocal(ThreadLocal);
770 // Parse attributes on the global.
771 while (Lex.getKind() == lltok::comma) {
774 if (Lex.getKind() == lltok::kw_section) {
776 GV->setSection(Lex.getStrVal());
777 if (ParseToken(lltok::StringConstant, "expected global section string"))
779 } else if (Lex.getKind() == lltok::kw_align) {
781 if (ParseOptionalAlignment(Alignment)) return true;
782 GV->setAlignment(Alignment);
784 TokError("unknown global variable property!");
792 //===----------------------------------------------------------------------===//
793 // GlobalValue Reference/Resolution Routines.
794 //===----------------------------------------------------------------------===//
796 /// GetGlobalVal - Get a value with the specified name or ID, creating a
797 /// forward reference record if needed. This can return null if the value
798 /// exists but does not have the right type.
799 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, const Type *Ty,
801 const PointerType *PTy = dyn_cast<PointerType>(Ty);
803 Error(Loc, "global variable reference must have pointer type");
807 // Look this name up in the normal function symbol table.
809 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
811 // If this is a forward reference for the value, see if we already created a
812 // forward ref record.
814 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
815 I = ForwardRefVals.find(Name);
816 if (I != ForwardRefVals.end())
817 Val = I->second.first;
820 // If we have the value in the symbol table or fwd-ref table, return it.
822 if (Val->getType() == Ty) return Val;
823 Error(Loc, "'@" + Name + "' defined with type '" +
824 Val->getType()->getDescription() + "'");
828 // Otherwise, create a new forward reference for this value and remember it.
830 if (const FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType())) {
831 // Function types can return opaque but functions can't.
832 if (isa<OpaqueType>(FT->getReturnType())) {
833 Error(Loc, "function may not return opaque type");
837 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
839 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
840 GlobalValue::ExternalWeakLinkage, 0, Name);
843 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
847 GlobalValue *LLParser::GetGlobalVal(unsigned ID, const Type *Ty, LocTy Loc) {
848 const PointerType *PTy = dyn_cast<PointerType>(Ty);
850 Error(Loc, "global variable reference must have pointer type");
854 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
856 // If this is a forward reference for the value, see if we already created a
857 // forward ref record.
859 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
860 I = ForwardRefValIDs.find(ID);
861 if (I != ForwardRefValIDs.end())
862 Val = I->second.first;
865 // If we have the value in the symbol table or fwd-ref table, return it.
867 if (Val->getType() == Ty) return Val;
868 Error(Loc, "'@" + utostr(ID) + "' defined with type '" +
869 Val->getType()->getDescription() + "'");
873 // Otherwise, create a new forward reference for this value and remember it.
875 if (const FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType())) {
876 // Function types can return opaque but functions can't.
877 if (isa<OpaqueType>(FT->getReturnType())) {
878 Error(Loc, "function may not return opaque type");
881 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
883 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
884 GlobalValue::ExternalWeakLinkage, 0, "");
887 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
892 //===----------------------------------------------------------------------===//
894 //===----------------------------------------------------------------------===//
896 /// ParseToken - If the current token has the specified kind, eat it and return
897 /// success. Otherwise, emit the specified error and return failure.
898 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
899 if (Lex.getKind() != T)
900 return TokError(ErrMsg);
905 /// ParseStringConstant
906 /// ::= StringConstant
907 bool LLParser::ParseStringConstant(std::string &Result) {
908 if (Lex.getKind() != lltok::StringConstant)
909 return TokError("expected string constant");
910 Result = Lex.getStrVal();
917 bool LLParser::ParseUInt32(unsigned &Val) {
918 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
919 return TokError("expected integer");
920 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
921 if (Val64 != unsigned(Val64))
922 return TokError("expected 32-bit integer (too large)");
929 /// ParseOptionalAddrSpace
931 /// := 'addrspace' '(' uint32 ')'
932 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
934 if (!EatIfPresent(lltok::kw_addrspace))
936 return ParseToken(lltok::lparen, "expected '(' in address space") ||
937 ParseUInt32(AddrSpace) ||
938 ParseToken(lltok::rparen, "expected ')' in address space");
941 /// ParseOptionalAttrs - Parse a potentially empty attribute list. AttrKind
942 /// indicates what kind of attribute list this is: 0: function arg, 1: result,
943 /// 2: function attr.
944 /// 3: function arg after value: FIXME: REMOVE IN LLVM 3.0
945 bool LLParser::ParseOptionalAttrs(unsigned &Attrs, unsigned AttrKind) {
946 Attrs = Attribute::None;
947 LocTy AttrLoc = Lex.getLoc();
950 switch (Lex.getKind()) {
953 // Treat these as signext/zeroext if they occur in the argument list after
954 // the value, as in "call i8 @foo(i8 10 sext)". If they occur before the
955 // value, as in "call i8 @foo(i8 sext (" then it is part of a constant
957 // FIXME: REMOVE THIS IN LLVM 3.0
959 if (Lex.getKind() == lltok::kw_sext)
960 Attrs |= Attribute::SExt;
962 Attrs |= Attribute::ZExt;
966 default: // End of attributes.
967 if (AttrKind != 2 && (Attrs & Attribute::FunctionOnly))
968 return Error(AttrLoc, "invalid use of function-only attribute");
970 if (AttrKind != 0 && AttrKind != 3 && (Attrs & Attribute::ParameterOnly))
971 return Error(AttrLoc, "invalid use of parameter-only attribute");
974 case lltok::kw_zeroext: Attrs |= Attribute::ZExt; break;
975 case lltok::kw_signext: Attrs |= Attribute::SExt; break;
976 case lltok::kw_inreg: Attrs |= Attribute::InReg; break;
977 case lltok::kw_sret: Attrs |= Attribute::StructRet; break;
978 case lltok::kw_noalias: Attrs |= Attribute::NoAlias; break;
979 case lltok::kw_nocapture: Attrs |= Attribute::NoCapture; break;
980 case lltok::kw_byval: Attrs |= Attribute::ByVal; break;
981 case lltok::kw_nest: Attrs |= Attribute::Nest; break;
983 case lltok::kw_noreturn: Attrs |= Attribute::NoReturn; break;
984 case lltok::kw_nounwind: Attrs |= Attribute::NoUnwind; break;
985 case lltok::kw_noinline: Attrs |= Attribute::NoInline; break;
986 case lltok::kw_readnone: Attrs |= Attribute::ReadNone; break;
987 case lltok::kw_readonly: Attrs |= Attribute::ReadOnly; break;
988 case lltok::kw_inlinehint: Attrs |= Attribute::InlineHint; break;
989 case lltok::kw_alwaysinline: Attrs |= Attribute::AlwaysInline; break;
990 case lltok::kw_optsize: Attrs |= Attribute::OptimizeForSize; break;
991 case lltok::kw_ssp: Attrs |= Attribute::StackProtect; break;
992 case lltok::kw_sspreq: Attrs |= Attribute::StackProtectReq; break;
993 case lltok::kw_noredzone: Attrs |= Attribute::NoRedZone; break;
994 case lltok::kw_noimplicitfloat: Attrs |= Attribute::NoImplicitFloat; break;
995 case lltok::kw_naked: Attrs |= Attribute::Naked; break;
997 case lltok::kw_align: {
999 if (ParseOptionalAlignment(Alignment))
1001 Attrs |= Attribute::constructAlignmentFromInt(Alignment);
1009 /// ParseOptionalLinkage
1012 /// ::= 'linker_private'
1017 /// ::= 'linkonce_odr'
1022 /// ::= 'extern_weak'
1024 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1026 switch (Lex.getKind()) {
1027 default: Res=GlobalValue::ExternalLinkage; return false;
1028 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1029 case lltok::kw_linker_private: Res = GlobalValue::LinkerPrivateLinkage; break;
1030 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1031 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1032 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1033 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1034 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1035 case lltok::kw_available_externally:
1036 Res = GlobalValue::AvailableExternallyLinkage;
1038 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1039 case lltok::kw_dllexport: Res = GlobalValue::DLLExportLinkage; break;
1040 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1041 case lltok::kw_dllimport: Res = GlobalValue::DLLImportLinkage; break;
1042 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1043 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1050 /// ParseOptionalVisibility
1056 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1057 switch (Lex.getKind()) {
1058 default: Res = GlobalValue::DefaultVisibility; return false;
1059 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1060 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1061 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1067 /// ParseOptionalCallingConv
1072 /// ::= 'x86_stdcallcc'
1073 /// ::= 'x86_fastcallcc'
1074 /// ::= 'arm_apcscc'
1075 /// ::= 'arm_aapcscc'
1076 /// ::= 'arm_aapcs_vfpcc'
1077 /// ::= 'msp430_intrcc'
1080 bool LLParser::ParseOptionalCallingConv(CallingConv::ID &CC) {
1081 switch (Lex.getKind()) {
1082 default: CC = CallingConv::C; return false;
1083 case lltok::kw_ccc: CC = CallingConv::C; break;
1084 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1085 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1086 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1087 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1088 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1089 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1090 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1091 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1092 case lltok::kw_cc: {
1093 unsigned ArbitraryCC;
1095 if (ParseUInt32(ArbitraryCC)) {
1098 CC = static_cast<CallingConv::ID>(ArbitraryCC);
1108 /// ParseOptionalCustomMetadata
1111 bool LLParser::ParseOptionalCustomMetadata() {
1112 if (Lex.getKind() != lltok::NamedOrCustomMD)
1115 std::string Name = Lex.getStrVal();
1118 if (Lex.getKind() != lltok::Metadata)
1119 return TokError("Expected '!' here");
1123 if (ParseMDNode(Node)) return true;
1125 MetadataContext &TheMetadata = M->getContext().getMetadata();
1126 unsigned MDK = TheMetadata.getMDKindID(Name.c_str());
1127 MDsOnInst.push_back(std::make_pair(MDK, cast<MDNode>(Node)));
1131 /// ParseOptionalAlignment
1134 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1136 if (!EatIfPresent(lltok::kw_align))
1138 LocTy AlignLoc = Lex.getLoc();
1139 if (ParseUInt32(Alignment)) return true;
1140 if (!isPowerOf2_32(Alignment))
1141 return Error(AlignLoc, "alignment is not a power of two");
1145 /// ParseOptionalInfo
1146 /// ::= OptionalInfo (',' OptionalInfo)+
1147 bool LLParser::ParseOptionalInfo(unsigned &Alignment) {
1149 // FIXME: Handle customized metadata info attached with an instruction.
1151 if (Lex.getKind() == lltok::NamedOrCustomMD) {
1152 if (ParseOptionalCustomMetadata()) return true;
1153 } else if (Lex.getKind() == lltok::kw_align) {
1154 if (ParseOptionalAlignment(Alignment)) return true;
1157 } while (EatIfPresent(lltok::comma));
1164 /// ::= (',' uint32)+
1165 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices) {
1166 if (Lex.getKind() != lltok::comma)
1167 return TokError("expected ',' as start of index list");
1169 while (EatIfPresent(lltok::comma)) {
1170 if (Lex.getKind() == lltok::NamedOrCustomMD)
1173 if (ParseUInt32(Idx)) return true;
1174 Indices.push_back(Idx);
1180 //===----------------------------------------------------------------------===//
1182 //===----------------------------------------------------------------------===//
1184 /// ParseType - Parse and resolve a full type.
1185 bool LLParser::ParseType(PATypeHolder &Result, bool AllowVoid) {
1186 LocTy TypeLoc = Lex.getLoc();
1187 if (ParseTypeRec(Result)) return true;
1189 // Verify no unresolved uprefs.
1190 if (!UpRefs.empty())
1191 return Error(UpRefs.back().Loc, "invalid unresolved type up reference");
1193 if (!AllowVoid && Result.get()->isVoidTy())
1194 return Error(TypeLoc, "void type only allowed for function results");
1199 /// HandleUpRefs - Every time we finish a new layer of types, this function is
1200 /// called. It loops through the UpRefs vector, which is a list of the
1201 /// currently active types. For each type, if the up-reference is contained in
1202 /// the newly completed type, we decrement the level count. When the level
1203 /// count reaches zero, the up-referenced type is the type that is passed in:
1204 /// thus we can complete the cycle.
1206 PATypeHolder LLParser::HandleUpRefs(const Type *ty) {
1207 // If Ty isn't abstract, or if there are no up-references in it, then there is
1208 // nothing to resolve here.
1209 if (!ty->isAbstract() || UpRefs.empty()) return ty;
1211 PATypeHolder Ty(ty);
1213 dbgs() << "Type '" << Ty->getDescription()
1214 << "' newly formed. Resolving upreferences.\n"
1215 << UpRefs.size() << " upreferences active!\n";
1218 // If we find any resolvable upreferences (i.e., those whose NestingLevel goes
1219 // to zero), we resolve them all together before we resolve them to Ty. At
1220 // the end of the loop, if there is anything to resolve to Ty, it will be in
1222 OpaqueType *TypeToResolve = 0;
1224 for (unsigned i = 0; i != UpRefs.size(); ++i) {
1225 // Determine if 'Ty' directly contains this up-references 'LastContainedTy'.
1227 std::find(Ty->subtype_begin(), Ty->subtype_end(),
1228 UpRefs[i].LastContainedTy) != Ty->subtype_end();
1231 dbgs() << " UR#" << i << " - TypeContains(" << Ty->getDescription() << ", "
1232 << UpRefs[i].LastContainedTy->getDescription() << ") = "
1233 << (ContainsType ? "true" : "false")
1234 << " level=" << UpRefs[i].NestingLevel << "\n";
1239 // Decrement level of upreference
1240 unsigned Level = --UpRefs[i].NestingLevel;
1241 UpRefs[i].LastContainedTy = Ty;
1243 // If the Up-reference has a non-zero level, it shouldn't be resolved yet.
1248 dbgs() << " * Resolving upreference for " << UpRefs[i].UpRefTy << "\n";
1251 TypeToResolve = UpRefs[i].UpRefTy;
1253 UpRefs[i].UpRefTy->refineAbstractTypeTo(TypeToResolve);
1254 UpRefs.erase(UpRefs.begin()+i); // Remove from upreference list.
1255 --i; // Do not skip the next element.
1259 TypeToResolve->refineAbstractTypeTo(Ty);
1265 /// ParseTypeRec - The recursive function used to process the internal
1266 /// implementation details of types.
1267 bool LLParser::ParseTypeRec(PATypeHolder &Result) {
1268 switch (Lex.getKind()) {
1270 return TokError("expected type");
1272 // TypeRec ::= 'float' | 'void' (etc)
1273 Result = Lex.getTyVal();
1276 case lltok::kw_opaque:
1277 // TypeRec ::= 'opaque'
1278 Result = OpaqueType::get(Context);
1282 // TypeRec ::= '{' ... '}'
1283 if (ParseStructType(Result, false))
1286 case lltok::lsquare:
1287 // TypeRec ::= '[' ... ']'
1288 Lex.Lex(); // eat the lsquare.
1289 if (ParseArrayVectorType(Result, false))
1292 case lltok::less: // Either vector or packed struct.
1293 // TypeRec ::= '<' ... '>'
1295 if (Lex.getKind() == lltok::lbrace) {
1296 if (ParseStructType(Result, true) ||
1297 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1299 } else if (ParseArrayVectorType(Result, true))
1302 case lltok::LocalVar:
1303 case lltok::StringConstant: // FIXME: REMOVE IN LLVM 3.0
1305 if (const Type *T = M->getTypeByName(Lex.getStrVal())) {
1308 Result = OpaqueType::get(Context);
1309 ForwardRefTypes.insert(std::make_pair(Lex.getStrVal(),
1310 std::make_pair(Result,
1312 M->addTypeName(Lex.getStrVal(), Result.get());
1317 case lltok::LocalVarID:
1319 if (Lex.getUIntVal() < NumberedTypes.size())
1320 Result = NumberedTypes[Lex.getUIntVal()];
1322 std::map<unsigned, std::pair<PATypeHolder, LocTy> >::iterator
1323 I = ForwardRefTypeIDs.find(Lex.getUIntVal());
1324 if (I != ForwardRefTypeIDs.end())
1325 Result = I->second.first;
1327 Result = OpaqueType::get(Context);
1328 ForwardRefTypeIDs.insert(std::make_pair(Lex.getUIntVal(),
1329 std::make_pair(Result,
1335 case lltok::backslash: {
1336 // TypeRec ::= '\' 4
1339 if (ParseUInt32(Val)) return true;
1340 OpaqueType *OT = OpaqueType::get(Context); //Use temporary placeholder.
1341 UpRefs.push_back(UpRefRecord(Lex.getLoc(), Val, OT));
1347 // Parse the type suffixes.
1349 switch (Lex.getKind()) {
1351 default: return false;
1353 // TypeRec ::= TypeRec '*'
1355 if (Result.get()->isLabelTy())
1356 return TokError("basic block pointers are invalid");
1357 if (Result.get()->isVoidTy())
1358 return TokError("pointers to void are invalid; use i8* instead");
1359 if (!PointerType::isValidElementType(Result.get()))
1360 return TokError("pointer to this type is invalid");
1361 Result = HandleUpRefs(PointerType::getUnqual(Result.get()));
1365 // TypeRec ::= TypeRec 'addrspace' '(' uint32 ')' '*'
1366 case lltok::kw_addrspace: {
1367 if (Result.get()->isLabelTy())
1368 return TokError("basic block pointers are invalid");
1369 if (Result.get()->isVoidTy())
1370 return TokError("pointers to void are invalid; use i8* instead");
1371 if (!PointerType::isValidElementType(Result.get()))
1372 return TokError("pointer to this type is invalid");
1374 if (ParseOptionalAddrSpace(AddrSpace) ||
1375 ParseToken(lltok::star, "expected '*' in address space"))
1378 Result = HandleUpRefs(PointerType::get(Result.get(), AddrSpace));
1382 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1384 if (ParseFunctionType(Result))
1391 /// ParseParameterList
1393 /// ::= '(' Arg (',' Arg)* ')'
1395 /// ::= Type OptionalAttributes Value OptionalAttributes
1396 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1397 PerFunctionState &PFS) {
1398 if (ParseToken(lltok::lparen, "expected '(' in call"))
1401 while (Lex.getKind() != lltok::rparen) {
1402 // If this isn't the first argument, we need a comma.
1403 if (!ArgList.empty() &&
1404 ParseToken(lltok::comma, "expected ',' in argument list"))
1407 // Parse the argument.
1409 PATypeHolder ArgTy(Type::getVoidTy(Context));
1410 unsigned ArgAttrs1 = Attribute::None;
1411 unsigned ArgAttrs2 = Attribute::None;
1413 if (ParseType(ArgTy, ArgLoc))
1416 if (Lex.getKind() == lltok::Metadata) {
1417 if (ParseInlineMetadata(V, PFS))
1420 if (ParseOptionalAttrs(ArgAttrs1, 0) ||
1421 ParseValue(ArgTy, V, PFS) ||
1422 // FIXME: Should not allow attributes after the argument, remove this
1424 ParseOptionalAttrs(ArgAttrs2, 3))
1427 ArgList.push_back(ParamInfo(ArgLoc, V, ArgAttrs1|ArgAttrs2));
1430 Lex.Lex(); // Lex the ')'.
1436 /// ParseArgumentList - Parse the argument list for a function type or function
1437 /// prototype. If 'inType' is true then we are parsing a FunctionType.
1438 /// ::= '(' ArgTypeListI ')'
1442 /// ::= ArgTypeList ',' '...'
1443 /// ::= ArgType (',' ArgType)*
1445 bool LLParser::ParseArgumentList(std::vector<ArgInfo> &ArgList,
1446 bool &isVarArg, bool inType) {
1448 assert(Lex.getKind() == lltok::lparen);
1449 Lex.Lex(); // eat the (.
1451 if (Lex.getKind() == lltok::rparen) {
1453 } else if (Lex.getKind() == lltok::dotdotdot) {
1457 LocTy TypeLoc = Lex.getLoc();
1458 PATypeHolder ArgTy(Type::getVoidTy(Context));
1462 // If we're parsing a type, use ParseTypeRec, because we allow recursive
1463 // types (such as a function returning a pointer to itself). If parsing a
1464 // function prototype, we require fully resolved types.
1465 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1466 ParseOptionalAttrs(Attrs, 0)) return true;
1468 if (ArgTy->isVoidTy())
1469 return Error(TypeLoc, "argument can not have void type");
1471 if (Lex.getKind() == lltok::LocalVar ||
1472 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1473 Name = Lex.getStrVal();
1477 if (!FunctionType::isValidArgumentType(ArgTy))
1478 return Error(TypeLoc, "invalid type for function argument");
1480 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1482 while (EatIfPresent(lltok::comma)) {
1483 // Handle ... at end of arg list.
1484 if (EatIfPresent(lltok::dotdotdot)) {
1489 // Otherwise must be an argument type.
1490 TypeLoc = Lex.getLoc();
1491 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1492 ParseOptionalAttrs(Attrs, 0)) return true;
1494 if (ArgTy->isVoidTy())
1495 return Error(TypeLoc, "argument can not have void type");
1497 if (Lex.getKind() == lltok::LocalVar ||
1498 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1499 Name = Lex.getStrVal();
1505 if (!ArgTy->isFirstClassType() && !isa<OpaqueType>(ArgTy))
1506 return Error(TypeLoc, "invalid type for function argument");
1508 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1512 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1515 /// ParseFunctionType
1516 /// ::= Type ArgumentList OptionalAttrs
1517 bool LLParser::ParseFunctionType(PATypeHolder &Result) {
1518 assert(Lex.getKind() == lltok::lparen);
1520 if (!FunctionType::isValidReturnType(Result))
1521 return TokError("invalid function return type");
1523 std::vector<ArgInfo> ArgList;
1526 if (ParseArgumentList(ArgList, isVarArg, true) ||
1527 // FIXME: Allow, but ignore attributes on function types!
1528 // FIXME: Remove in LLVM 3.0
1529 ParseOptionalAttrs(Attrs, 2))
1532 // Reject names on the arguments lists.
1533 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1534 if (!ArgList[i].Name.empty())
1535 return Error(ArgList[i].Loc, "argument name invalid in function type");
1536 if (!ArgList[i].Attrs != 0) {
1537 // Allow but ignore attributes on function types; this permits
1539 // FIXME: REJECT ATTRIBUTES ON FUNCTION TYPES in LLVM 3.0
1543 std::vector<const Type*> ArgListTy;
1544 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1545 ArgListTy.push_back(ArgList[i].Type);
1547 Result = HandleUpRefs(FunctionType::get(Result.get(),
1548 ArgListTy, isVarArg));
1552 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
1555 /// ::= '{' TypeRec (',' TypeRec)* '}'
1556 /// ::= '<' '{' '}' '>'
1557 /// ::= '<' '{' TypeRec (',' TypeRec)* '}' '>'
1558 bool LLParser::ParseStructType(PATypeHolder &Result, bool Packed) {
1559 assert(Lex.getKind() == lltok::lbrace);
1560 Lex.Lex(); // Consume the '{'
1562 if (EatIfPresent(lltok::rbrace)) {
1563 Result = StructType::get(Context, Packed);
1567 std::vector<PATypeHolder> ParamsList;
1568 LocTy EltTyLoc = Lex.getLoc();
1569 if (ParseTypeRec(Result)) return true;
1570 ParamsList.push_back(Result);
1572 if (Result->isVoidTy())
1573 return Error(EltTyLoc, "struct element can not have void type");
1574 if (!StructType::isValidElementType(Result))
1575 return Error(EltTyLoc, "invalid element type for struct");
1577 while (EatIfPresent(lltok::comma)) {
1578 EltTyLoc = Lex.getLoc();
1579 if (ParseTypeRec(Result)) return true;
1581 if (Result->isVoidTy())
1582 return Error(EltTyLoc, "struct element can not have void type");
1583 if (!StructType::isValidElementType(Result))
1584 return Error(EltTyLoc, "invalid element type for struct");
1586 ParamsList.push_back(Result);
1589 if (ParseToken(lltok::rbrace, "expected '}' at end of struct"))
1592 std::vector<const Type*> ParamsListTy;
1593 for (unsigned i = 0, e = ParamsList.size(); i != e; ++i)
1594 ParamsListTy.push_back(ParamsList[i].get());
1595 Result = HandleUpRefs(StructType::get(Context, ParamsListTy, Packed));
1599 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
1600 /// token has already been consumed.
1602 /// ::= '[' APSINTVAL 'x' Types ']'
1603 /// ::= '<' APSINTVAL 'x' Types '>'
1604 bool LLParser::ParseArrayVectorType(PATypeHolder &Result, bool isVector) {
1605 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
1606 Lex.getAPSIntVal().getBitWidth() > 64)
1607 return TokError("expected number in address space");
1609 LocTy SizeLoc = Lex.getLoc();
1610 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
1613 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
1616 LocTy TypeLoc = Lex.getLoc();
1617 PATypeHolder EltTy(Type::getVoidTy(Context));
1618 if (ParseTypeRec(EltTy)) return true;
1620 if (EltTy->isVoidTy())
1621 return Error(TypeLoc, "array and vector element type cannot be void");
1623 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
1624 "expected end of sequential type"))
1629 return Error(SizeLoc, "zero element vector is illegal");
1630 if ((unsigned)Size != Size)
1631 return Error(SizeLoc, "size too large for vector");
1632 if (!VectorType::isValidElementType(EltTy))
1633 return Error(TypeLoc, "vector element type must be fp or integer");
1634 Result = VectorType::get(EltTy, unsigned(Size));
1636 if (!ArrayType::isValidElementType(EltTy))
1637 return Error(TypeLoc, "invalid array element type");
1638 Result = HandleUpRefs(ArrayType::get(EltTy, Size));
1643 //===----------------------------------------------------------------------===//
1644 // Function Semantic Analysis.
1645 //===----------------------------------------------------------------------===//
1647 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
1649 : P(p), F(f), FunctionNumber(functionNumber) {
1651 // Insert unnamed arguments into the NumberedVals list.
1652 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
1655 NumberedVals.push_back(AI);
1658 LLParser::PerFunctionState::~PerFunctionState() {
1659 // If there were any forward referenced non-basicblock values, delete them.
1660 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
1661 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
1662 if (!isa<BasicBlock>(I->second.first)) {
1663 I->second.first->replaceAllUsesWith(
1664 UndefValue::get(I->second.first->getType()));
1665 delete I->second.first;
1666 I->second.first = 0;
1669 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1670 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
1671 if (!isa<BasicBlock>(I->second.first)) {
1672 I->second.first->replaceAllUsesWith(
1673 UndefValue::get(I->second.first->getType()));
1674 delete I->second.first;
1675 I->second.first = 0;
1679 bool LLParser::PerFunctionState::FinishFunction() {
1680 // Check to see if someone took the address of labels in this block.
1681 if (!P.ForwardRefBlockAddresses.empty()) {
1683 if (!F.getName().empty()) {
1684 FunctionID.Kind = ValID::t_GlobalName;
1685 FunctionID.StrVal = F.getName();
1687 FunctionID.Kind = ValID::t_GlobalID;
1688 FunctionID.UIntVal = FunctionNumber;
1691 std::map<ValID, std::vector<std::pair<ValID, GlobalValue*> > >::iterator
1692 FRBAI = P.ForwardRefBlockAddresses.find(FunctionID);
1693 if (FRBAI != P.ForwardRefBlockAddresses.end()) {
1694 // Resolve all these references.
1695 if (P.ResolveForwardRefBlockAddresses(&F, FRBAI->second, this))
1698 P.ForwardRefBlockAddresses.erase(FRBAI);
1702 if (!ForwardRefVals.empty())
1703 return P.Error(ForwardRefVals.begin()->second.second,
1704 "use of undefined value '%" + ForwardRefVals.begin()->first +
1706 if (!ForwardRefValIDs.empty())
1707 return P.Error(ForwardRefValIDs.begin()->second.second,
1708 "use of undefined value '%" +
1709 utostr(ForwardRefValIDs.begin()->first) + "'");
1714 /// GetVal - Get a value with the specified name or ID, creating a
1715 /// forward reference record if needed. This can return null if the value
1716 /// exists but does not have the right type.
1717 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
1718 const Type *Ty, LocTy Loc) {
1719 // Look this name up in the normal function symbol table.
1720 Value *Val = F.getValueSymbolTable().lookup(Name);
1722 // If this is a forward reference for the value, see if we already created a
1723 // forward ref record.
1725 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1726 I = ForwardRefVals.find(Name);
1727 if (I != ForwardRefVals.end())
1728 Val = I->second.first;
1731 // If we have the value in the symbol table or fwd-ref table, return it.
1733 if (Val->getType() == Ty) return Val;
1734 if (Ty->isLabelTy())
1735 P.Error(Loc, "'%" + Name + "' is not a basic block");
1737 P.Error(Loc, "'%" + Name + "' defined with type '" +
1738 Val->getType()->getDescription() + "'");
1742 // Don't make placeholders with invalid type.
1743 if (!Ty->isFirstClassType() && !isa<OpaqueType>(Ty) &&
1744 Ty != Type::getLabelTy(F.getContext())) {
1745 P.Error(Loc, "invalid use of a non-first-class type");
1749 // Otherwise, create a new forward reference for this value and remember it.
1751 if (Ty->isLabelTy())
1752 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
1754 FwdVal = new Argument(Ty, Name);
1756 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1760 Value *LLParser::PerFunctionState::GetVal(unsigned ID, const Type *Ty,
1762 // Look this name up in the normal function symbol table.
1763 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
1765 // If this is a forward reference for the value, see if we already created a
1766 // forward ref record.
1768 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1769 I = ForwardRefValIDs.find(ID);
1770 if (I != ForwardRefValIDs.end())
1771 Val = I->second.first;
1774 // If we have the value in the symbol table or fwd-ref table, return it.
1776 if (Val->getType() == Ty) return Val;
1777 if (Ty->isLabelTy())
1778 P.Error(Loc, "'%" + utostr(ID) + "' is not a basic block");
1780 P.Error(Loc, "'%" + utostr(ID) + "' defined with type '" +
1781 Val->getType()->getDescription() + "'");
1785 if (!Ty->isFirstClassType() && !isa<OpaqueType>(Ty) &&
1786 Ty != Type::getLabelTy(F.getContext())) {
1787 P.Error(Loc, "invalid use of a non-first-class type");
1791 // Otherwise, create a new forward reference for this value and remember it.
1793 if (Ty->isLabelTy())
1794 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
1796 FwdVal = new Argument(Ty);
1798 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1802 /// SetInstName - After an instruction is parsed and inserted into its
1803 /// basic block, this installs its name.
1804 bool LLParser::PerFunctionState::SetInstName(int NameID,
1805 const std::string &NameStr,
1806 LocTy NameLoc, Instruction *Inst) {
1807 // If this instruction has void type, it cannot have a name or ID specified.
1808 if (Inst->getType()->isVoidTy()) {
1809 if (NameID != -1 || !NameStr.empty())
1810 return P.Error(NameLoc, "instructions returning void cannot have a name");
1814 // If this was a numbered instruction, verify that the instruction is the
1815 // expected value and resolve any forward references.
1816 if (NameStr.empty()) {
1817 // If neither a name nor an ID was specified, just use the next ID.
1819 NameID = NumberedVals.size();
1821 if (unsigned(NameID) != NumberedVals.size())
1822 return P.Error(NameLoc, "instruction expected to be numbered '%" +
1823 utostr(NumberedVals.size()) + "'");
1825 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
1826 ForwardRefValIDs.find(NameID);
1827 if (FI != ForwardRefValIDs.end()) {
1828 if (FI->second.first->getType() != Inst->getType())
1829 return P.Error(NameLoc, "instruction forward referenced with type '" +
1830 FI->second.first->getType()->getDescription() + "'");
1831 FI->second.first->replaceAllUsesWith(Inst);
1832 delete FI->second.first;
1833 ForwardRefValIDs.erase(FI);
1836 NumberedVals.push_back(Inst);
1840 // Otherwise, the instruction had a name. Resolve forward refs and set it.
1841 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1842 FI = ForwardRefVals.find(NameStr);
1843 if (FI != ForwardRefVals.end()) {
1844 if (FI->second.first->getType() != Inst->getType())
1845 return P.Error(NameLoc, "instruction forward referenced with type '" +
1846 FI->second.first->getType()->getDescription() + "'");
1847 FI->second.first->replaceAllUsesWith(Inst);
1848 delete FI->second.first;
1849 ForwardRefVals.erase(FI);
1852 // Set the name on the instruction.
1853 Inst->setName(NameStr);
1855 if (Inst->getNameStr() != NameStr)
1856 return P.Error(NameLoc, "multiple definition of local value named '" +
1861 /// GetBB - Get a basic block with the specified name or ID, creating a
1862 /// forward reference record if needed.
1863 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
1865 return cast_or_null<BasicBlock>(GetVal(Name,
1866 Type::getLabelTy(F.getContext()), Loc));
1869 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
1870 return cast_or_null<BasicBlock>(GetVal(ID,
1871 Type::getLabelTy(F.getContext()), Loc));
1874 /// DefineBB - Define the specified basic block, which is either named or
1875 /// unnamed. If there is an error, this returns null otherwise it returns
1876 /// the block being defined.
1877 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
1881 BB = GetBB(NumberedVals.size(), Loc);
1883 BB = GetBB(Name, Loc);
1884 if (BB == 0) return 0; // Already diagnosed error.
1886 // Move the block to the end of the function. Forward ref'd blocks are
1887 // inserted wherever they happen to be referenced.
1888 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
1890 // Remove the block from forward ref sets.
1892 ForwardRefValIDs.erase(NumberedVals.size());
1893 NumberedVals.push_back(BB);
1895 // BB forward references are already in the function symbol table.
1896 ForwardRefVals.erase(Name);
1902 //===----------------------------------------------------------------------===//
1904 //===----------------------------------------------------------------------===//
1906 /// ParseValID - Parse an abstract value that doesn't necessarily have a
1907 /// type implied. For example, if we parse "4" we don't know what integer type
1908 /// it has. The value will later be combined with its type and checked for
1910 bool LLParser::ParseValID(ValID &ID) {
1911 ID.Loc = Lex.getLoc();
1912 switch (Lex.getKind()) {
1913 default: return TokError("expected value token");
1914 case lltok::GlobalID: // @42
1915 ID.UIntVal = Lex.getUIntVal();
1916 ID.Kind = ValID::t_GlobalID;
1918 case lltok::GlobalVar: // @foo
1919 ID.StrVal = Lex.getStrVal();
1920 ID.Kind = ValID::t_GlobalName;
1922 case lltok::LocalVarID: // %42
1923 ID.UIntVal = Lex.getUIntVal();
1924 ID.Kind = ValID::t_LocalID;
1926 case lltok::LocalVar: // %foo
1927 case lltok::StringConstant: // "foo" - FIXME: REMOVE IN LLVM 3.0
1928 ID.StrVal = Lex.getStrVal();
1929 ID.Kind = ValID::t_LocalName;
1931 case lltok::Metadata: { // !{...} MDNode, !"foo" MDString
1932 ID.Kind = ValID::t_Metadata;
1934 if (Lex.getKind() == lltok::lbrace) {
1935 SmallVector<Value*, 16> Elts;
1936 if (ParseMDNodeVector(Elts) ||
1937 ParseToken(lltok::rbrace, "expected end of metadata node"))
1940 ID.MetadataVal = MDNode::get(Context, Elts.data(), Elts.size());
1944 // Standalone metadata reference
1945 // !{ ..., !42, ... }
1946 if (!ParseMDNode(ID.MetadataVal))
1950 // ::= '!' STRINGCONSTANT
1951 if (ParseMDString(ID.MetadataVal)) return true;
1952 ID.Kind = ValID::t_Metadata;
1956 ID.APSIntVal = Lex.getAPSIntVal();
1957 ID.Kind = ValID::t_APSInt;
1959 case lltok::APFloat:
1960 ID.APFloatVal = Lex.getAPFloatVal();
1961 ID.Kind = ValID::t_APFloat;
1963 case lltok::kw_true:
1964 ID.ConstantVal = ConstantInt::getTrue(Context);
1965 ID.Kind = ValID::t_Constant;
1967 case lltok::kw_false:
1968 ID.ConstantVal = ConstantInt::getFalse(Context);
1969 ID.Kind = ValID::t_Constant;
1971 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
1972 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
1973 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
1975 case lltok::lbrace: {
1976 // ValID ::= '{' ConstVector '}'
1978 SmallVector<Constant*, 16> Elts;
1979 if (ParseGlobalValueVector(Elts) ||
1980 ParseToken(lltok::rbrace, "expected end of struct constant"))
1983 ID.ConstantVal = ConstantStruct::get(Context, Elts.data(),
1984 Elts.size(), false);
1985 ID.Kind = ValID::t_Constant;
1989 // ValID ::= '<' ConstVector '>' --> Vector.
1990 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
1992 bool isPackedStruct = EatIfPresent(lltok::lbrace);
1994 SmallVector<Constant*, 16> Elts;
1995 LocTy FirstEltLoc = Lex.getLoc();
1996 if (ParseGlobalValueVector(Elts) ||
1998 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
1999 ParseToken(lltok::greater, "expected end of constant"))
2002 if (isPackedStruct) {
2004 ConstantStruct::get(Context, Elts.data(), Elts.size(), true);
2005 ID.Kind = ValID::t_Constant;
2010 return Error(ID.Loc, "constant vector must not be empty");
2012 if (!Elts[0]->getType()->isInteger() &&
2013 !Elts[0]->getType()->isFloatingPoint())
2014 return Error(FirstEltLoc,
2015 "vector elements must have integer or floating point type");
2017 // Verify that all the vector elements have the same type.
2018 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2019 if (Elts[i]->getType() != Elts[0]->getType())
2020 return Error(FirstEltLoc,
2021 "vector element #" + utostr(i) +
2022 " is not of type '" + Elts[0]->getType()->getDescription());
2024 ID.ConstantVal = ConstantVector::get(Elts.data(), Elts.size());
2025 ID.Kind = ValID::t_Constant;
2028 case lltok::lsquare: { // Array Constant
2030 SmallVector<Constant*, 16> Elts;
2031 LocTy FirstEltLoc = Lex.getLoc();
2032 if (ParseGlobalValueVector(Elts) ||
2033 ParseToken(lltok::rsquare, "expected end of array constant"))
2036 // Handle empty element.
2038 // Use undef instead of an array because it's inconvenient to determine
2039 // the element type at this point, there being no elements to examine.
2040 ID.Kind = ValID::t_EmptyArray;
2044 if (!Elts[0]->getType()->isFirstClassType())
2045 return Error(FirstEltLoc, "invalid array element type: " +
2046 Elts[0]->getType()->getDescription());
2048 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2050 // Verify all elements are correct type!
2051 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2052 if (Elts[i]->getType() != Elts[0]->getType())
2053 return Error(FirstEltLoc,
2054 "array element #" + utostr(i) +
2055 " is not of type '" +Elts[0]->getType()->getDescription());
2058 ID.ConstantVal = ConstantArray::get(ATy, Elts.data(), Elts.size());
2059 ID.Kind = ValID::t_Constant;
2062 case lltok::kw_c: // c "foo"
2064 ID.ConstantVal = ConstantArray::get(Context, Lex.getStrVal(), false);
2065 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2066 ID.Kind = ValID::t_Constant;
2069 case lltok::kw_asm: {
2070 // ValID ::= 'asm' SideEffect? AlignStack? STRINGCONSTANT ',' STRINGCONSTANT
2071 bool HasSideEffect, AlignStack;
2073 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2074 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2075 ParseStringConstant(ID.StrVal) ||
2076 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2077 ParseToken(lltok::StringConstant, "expected constraint string"))
2079 ID.StrVal2 = Lex.getStrVal();
2080 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1);
2081 ID.Kind = ValID::t_InlineAsm;
2085 case lltok::kw_blockaddress: {
2086 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2090 LocTy FnLoc, LabelLoc;
2092 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2094 ParseToken(lltok::comma, "expected comma in block address expression")||
2095 ParseValID(Label) ||
2096 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2099 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2100 return Error(Fn.Loc, "expected function name in blockaddress");
2101 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2102 return Error(Label.Loc, "expected basic block name in blockaddress");
2104 // Make a global variable as a placeholder for this reference.
2105 GlobalVariable *FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context),
2106 false, GlobalValue::InternalLinkage,
2108 ForwardRefBlockAddresses[Fn].push_back(std::make_pair(Label, FwdRef));
2109 ID.ConstantVal = FwdRef;
2110 ID.Kind = ValID::t_Constant;
2114 case lltok::kw_trunc:
2115 case lltok::kw_zext:
2116 case lltok::kw_sext:
2117 case lltok::kw_fptrunc:
2118 case lltok::kw_fpext:
2119 case lltok::kw_bitcast:
2120 case lltok::kw_uitofp:
2121 case lltok::kw_sitofp:
2122 case lltok::kw_fptoui:
2123 case lltok::kw_fptosi:
2124 case lltok::kw_inttoptr:
2125 case lltok::kw_ptrtoint: {
2126 unsigned Opc = Lex.getUIntVal();
2127 PATypeHolder DestTy(Type::getVoidTy(Context));
2130 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2131 ParseGlobalTypeAndValue(SrcVal) ||
2132 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2133 ParseType(DestTy) ||
2134 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2136 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2137 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2138 SrcVal->getType()->getDescription() + "' to '" +
2139 DestTy->getDescription() + "'");
2140 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2142 ID.Kind = ValID::t_Constant;
2145 case lltok::kw_extractvalue: {
2148 SmallVector<unsigned, 4> Indices;
2149 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2150 ParseGlobalTypeAndValue(Val) ||
2151 ParseIndexList(Indices) ||
2152 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2154 if (Lex.getKind() == lltok::NamedOrCustomMD)
2155 if (ParseOptionalCustomMetadata()) return true;
2157 if (!isa<StructType>(Val->getType()) && !isa<ArrayType>(Val->getType()))
2158 return Error(ID.Loc, "extractvalue operand must be array or struct");
2159 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
2161 return Error(ID.Loc, "invalid indices for extractvalue");
2163 ConstantExpr::getExtractValue(Val, Indices.data(), Indices.size());
2164 ID.Kind = ValID::t_Constant;
2167 case lltok::kw_insertvalue: {
2169 Constant *Val0, *Val1;
2170 SmallVector<unsigned, 4> Indices;
2171 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2172 ParseGlobalTypeAndValue(Val0) ||
2173 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2174 ParseGlobalTypeAndValue(Val1) ||
2175 ParseIndexList(Indices) ||
2176 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2178 if (Lex.getKind() == lltok::NamedOrCustomMD)
2179 if (ParseOptionalCustomMetadata()) return true;
2180 if (!isa<StructType>(Val0->getType()) && !isa<ArrayType>(Val0->getType()))
2181 return Error(ID.Loc, "extractvalue operand must be array or struct");
2182 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
2184 return Error(ID.Loc, "invalid indices for insertvalue");
2185 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1,
2186 Indices.data(), Indices.size());
2187 ID.Kind = ValID::t_Constant;
2190 case lltok::kw_icmp:
2191 case lltok::kw_fcmp: {
2192 unsigned PredVal, Opc = Lex.getUIntVal();
2193 Constant *Val0, *Val1;
2195 if (ParseCmpPredicate(PredVal, Opc) ||
2196 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2197 ParseGlobalTypeAndValue(Val0) ||
2198 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2199 ParseGlobalTypeAndValue(Val1) ||
2200 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2203 if (Val0->getType() != Val1->getType())
2204 return Error(ID.Loc, "compare operands must have the same type");
2206 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2208 if (Opc == Instruction::FCmp) {
2209 if (!Val0->getType()->isFPOrFPVector())
2210 return Error(ID.Loc, "fcmp requires floating point operands");
2211 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2213 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2214 if (!Val0->getType()->isIntOrIntVector() &&
2215 !isa<PointerType>(Val0->getType()))
2216 return Error(ID.Loc, "icmp requires pointer or integer operands");
2217 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2219 ID.Kind = ValID::t_Constant;
2223 // Binary Operators.
2225 case lltok::kw_fadd:
2227 case lltok::kw_fsub:
2229 case lltok::kw_fmul:
2230 case lltok::kw_udiv:
2231 case lltok::kw_sdiv:
2232 case lltok::kw_fdiv:
2233 case lltok::kw_urem:
2234 case lltok::kw_srem:
2235 case lltok::kw_frem: {
2239 unsigned Opc = Lex.getUIntVal();
2240 Constant *Val0, *Val1;
2242 LocTy ModifierLoc = Lex.getLoc();
2243 if (Opc == Instruction::Add ||
2244 Opc == Instruction::Sub ||
2245 Opc == Instruction::Mul) {
2246 if (EatIfPresent(lltok::kw_nuw))
2248 if (EatIfPresent(lltok::kw_nsw)) {
2250 if (EatIfPresent(lltok::kw_nuw))
2253 } else if (Opc == Instruction::SDiv) {
2254 if (EatIfPresent(lltok::kw_exact))
2257 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2258 ParseGlobalTypeAndValue(Val0) ||
2259 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2260 ParseGlobalTypeAndValue(Val1) ||
2261 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2263 if (Val0->getType() != Val1->getType())
2264 return Error(ID.Loc, "operands of constexpr must have same type");
2265 if (!Val0->getType()->isIntOrIntVector()) {
2267 return Error(ModifierLoc, "nuw only applies to integer operations");
2269 return Error(ModifierLoc, "nsw only applies to integer operations");
2271 // API compatibility: Accept either integer or floating-point types with
2272 // add, sub, and mul.
2273 if (!Val0->getType()->isIntOrIntVector() &&
2274 !Val0->getType()->isFPOrFPVector())
2275 return Error(ID.Loc,"constexpr requires integer, fp, or vector operands");
2277 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2278 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2279 if (Exact) Flags |= SDivOperator::IsExact;
2280 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2282 ID.Kind = ValID::t_Constant;
2286 // Logical Operations
2288 case lltok::kw_lshr:
2289 case lltok::kw_ashr:
2292 case lltok::kw_xor: {
2293 unsigned Opc = Lex.getUIntVal();
2294 Constant *Val0, *Val1;
2296 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2297 ParseGlobalTypeAndValue(Val0) ||
2298 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2299 ParseGlobalTypeAndValue(Val1) ||
2300 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2302 if (Val0->getType() != Val1->getType())
2303 return Error(ID.Loc, "operands of constexpr must have same type");
2304 if (!Val0->getType()->isIntOrIntVector())
2305 return Error(ID.Loc,
2306 "constexpr requires integer or integer vector operands");
2307 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2308 ID.Kind = ValID::t_Constant;
2312 case lltok::kw_getelementptr:
2313 case lltok::kw_shufflevector:
2314 case lltok::kw_insertelement:
2315 case lltok::kw_extractelement:
2316 case lltok::kw_select: {
2317 unsigned Opc = Lex.getUIntVal();
2318 SmallVector<Constant*, 16> Elts;
2319 bool InBounds = false;
2321 if (Opc == Instruction::GetElementPtr)
2322 InBounds = EatIfPresent(lltok::kw_inbounds);
2323 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2324 ParseGlobalValueVector(Elts) ||
2325 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2328 if (Opc == Instruction::GetElementPtr) {
2329 if (Elts.size() == 0 || !isa<PointerType>(Elts[0]->getType()))
2330 return Error(ID.Loc, "getelementptr requires pointer operand");
2332 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(),
2333 (Value**)(Elts.data() + 1),
2335 return Error(ID.Loc, "invalid indices for getelementptr");
2336 ID.ConstantVal = InBounds ?
2337 ConstantExpr::getInBoundsGetElementPtr(Elts[0],
2340 ConstantExpr::getGetElementPtr(Elts[0],
2341 Elts.data() + 1, Elts.size() - 1);
2342 } else if (Opc == Instruction::Select) {
2343 if (Elts.size() != 3)
2344 return Error(ID.Loc, "expected three operands to select");
2345 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2347 return Error(ID.Loc, Reason);
2348 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2349 } else if (Opc == Instruction::ShuffleVector) {
2350 if (Elts.size() != 3)
2351 return Error(ID.Loc, "expected three operands to shufflevector");
2352 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2353 return Error(ID.Loc, "invalid operands to shufflevector");
2355 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2356 } else if (Opc == Instruction::ExtractElement) {
2357 if (Elts.size() != 2)
2358 return Error(ID.Loc, "expected two operands to extractelement");
2359 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2360 return Error(ID.Loc, "invalid extractelement operands");
2361 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2363 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2364 if (Elts.size() != 3)
2365 return Error(ID.Loc, "expected three operands to insertelement");
2366 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2367 return Error(ID.Loc, "invalid insertelement operands");
2369 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2372 ID.Kind = ValID::t_Constant;
2381 /// ParseGlobalValue - Parse a global value with the specified type.
2382 bool LLParser::ParseGlobalValue(const Type *Ty, Constant *&V) {
2385 return ParseValID(ID) ||
2386 ConvertGlobalValIDToValue(Ty, ID, V);
2389 /// ConvertGlobalValIDToValue - Apply a type to a ValID to get a fully resolved
2391 bool LLParser::ConvertGlobalValIDToValue(const Type *Ty, ValID &ID,
2393 if (isa<FunctionType>(Ty))
2394 return Error(ID.Loc, "functions are not values, refer to them as pointers");
2397 default: llvm_unreachable("Unknown ValID!");
2398 case ValID::t_Metadata:
2399 return Error(ID.Loc, "invalid use of metadata");
2400 case ValID::t_LocalID:
2401 case ValID::t_LocalName:
2402 return Error(ID.Loc, "invalid use of function-local name");
2403 case ValID::t_InlineAsm:
2404 return Error(ID.Loc, "inline asm can only be an operand of call/invoke");
2405 case ValID::t_GlobalName:
2406 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
2408 case ValID::t_GlobalID:
2409 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
2411 case ValID::t_APSInt:
2412 if (!isa<IntegerType>(Ty))
2413 return Error(ID.Loc, "integer constant must have integer type");
2414 ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
2415 V = ConstantInt::get(Context, ID.APSIntVal);
2417 case ValID::t_APFloat:
2418 if (!Ty->isFloatingPoint() ||
2419 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
2420 return Error(ID.Loc, "floating point constant invalid for type");
2422 // The lexer has no type info, so builds all float and double FP constants
2423 // as double. Fix this here. Long double does not need this.
2424 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble &&
2427 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
2430 V = ConstantFP::get(Context, ID.APFloatVal);
2432 if (V->getType() != Ty)
2433 return Error(ID.Loc, "floating point constant does not have type '" +
2434 Ty->getDescription() + "'");
2438 if (!isa<PointerType>(Ty))
2439 return Error(ID.Loc, "null must be a pointer type");
2440 V = ConstantPointerNull::get(cast<PointerType>(Ty));
2442 case ValID::t_Undef:
2443 // FIXME: LabelTy should not be a first-class type.
2444 if ((!Ty->isFirstClassType() || Ty->isLabelTy()) &&
2445 !isa<OpaqueType>(Ty))
2446 return Error(ID.Loc, "invalid type for undef constant");
2447 V = UndefValue::get(Ty);
2449 case ValID::t_EmptyArray:
2450 if (!isa<ArrayType>(Ty) || cast<ArrayType>(Ty)->getNumElements() != 0)
2451 return Error(ID.Loc, "invalid empty array initializer");
2452 V = UndefValue::get(Ty);
2455 // FIXME: LabelTy should not be a first-class type.
2456 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2457 return Error(ID.Loc, "invalid type for null constant");
2458 V = Constant::getNullValue(Ty);
2460 case ValID::t_Constant:
2461 if (ID.ConstantVal->getType() != Ty)
2462 return Error(ID.Loc, "constant expression type mismatch");
2468 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2469 PATypeHolder Type(Type::getVoidTy(Context));
2470 return ParseType(Type) ||
2471 ParseGlobalValue(Type, V);
2474 /// ParseGlobalValueVector
2476 /// ::= TypeAndValue (',' TypeAndValue)*
2477 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts) {
2479 if (Lex.getKind() == lltok::rbrace ||
2480 Lex.getKind() == lltok::rsquare ||
2481 Lex.getKind() == lltok::greater ||
2482 Lex.getKind() == lltok::rparen)
2486 if (ParseGlobalTypeAndValue(C)) return true;
2489 while (EatIfPresent(lltok::comma)) {
2490 if (ParseGlobalTypeAndValue(C)) return true;
2498 //===----------------------------------------------------------------------===//
2499 // Function Parsing.
2500 //===----------------------------------------------------------------------===//
2502 bool LLParser::ConvertValIDToValue(const Type *Ty, ValID &ID, Value *&V,
2503 PerFunctionState &PFS) {
2504 if (ID.Kind == ValID::t_LocalID)
2505 V = PFS.GetVal(ID.UIntVal, Ty, ID.Loc);
2506 else if (ID.Kind == ValID::t_LocalName)
2507 V = PFS.GetVal(ID.StrVal, Ty, ID.Loc);
2508 else if (ID.Kind == ValID::t_InlineAsm) {
2509 const PointerType *PTy = dyn_cast<PointerType>(Ty);
2510 const FunctionType *FTy =
2511 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
2512 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
2513 return Error(ID.Loc, "invalid type for inline asm constraint string");
2514 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1, ID.UIntVal>>1);
2516 } else if (ID.Kind == ValID::t_Metadata) {
2520 if (ConvertGlobalValIDToValue(Ty, ID, C)) return true;
2528 bool LLParser::ParseValue(const Type *Ty, Value *&V, PerFunctionState &PFS) {
2531 return ParseValID(ID) ||
2532 ConvertValIDToValue(Ty, ID, V, PFS);
2535 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState &PFS) {
2536 PATypeHolder T(Type::getVoidTy(Context));
2537 return ParseType(T) ||
2538 ParseValue(T, V, PFS);
2541 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
2542 PerFunctionState &PFS) {
2545 if (ParseTypeAndValue(V, PFS)) return true;
2546 if (!isa<BasicBlock>(V))
2547 return Error(Loc, "expected a basic block");
2548 BB = cast<BasicBlock>(V);
2554 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
2555 /// Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
2556 /// OptionalAlign OptGC
2557 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
2558 // Parse the linkage.
2559 LocTy LinkageLoc = Lex.getLoc();
2562 unsigned Visibility, RetAttrs;
2564 PATypeHolder RetType(Type::getVoidTy(Context));
2565 LocTy RetTypeLoc = Lex.getLoc();
2566 if (ParseOptionalLinkage(Linkage) ||
2567 ParseOptionalVisibility(Visibility) ||
2568 ParseOptionalCallingConv(CC) ||
2569 ParseOptionalAttrs(RetAttrs, 1) ||
2570 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
2573 // Verify that the linkage is ok.
2574 switch ((GlobalValue::LinkageTypes)Linkage) {
2575 case GlobalValue::ExternalLinkage:
2576 break; // always ok.
2577 case GlobalValue::DLLImportLinkage:
2578 case GlobalValue::ExternalWeakLinkage:
2580 return Error(LinkageLoc, "invalid linkage for function definition");
2582 case GlobalValue::PrivateLinkage:
2583 case GlobalValue::LinkerPrivateLinkage:
2584 case GlobalValue::InternalLinkage:
2585 case GlobalValue::AvailableExternallyLinkage:
2586 case GlobalValue::LinkOnceAnyLinkage:
2587 case GlobalValue::LinkOnceODRLinkage:
2588 case GlobalValue::WeakAnyLinkage:
2589 case GlobalValue::WeakODRLinkage:
2590 case GlobalValue::DLLExportLinkage:
2592 return Error(LinkageLoc, "invalid linkage for function declaration");
2594 case GlobalValue::AppendingLinkage:
2595 case GlobalValue::GhostLinkage:
2596 case GlobalValue::CommonLinkage:
2597 return Error(LinkageLoc, "invalid function linkage type");
2600 if (!FunctionType::isValidReturnType(RetType) ||
2601 isa<OpaqueType>(RetType))
2602 return Error(RetTypeLoc, "invalid function return type");
2604 LocTy NameLoc = Lex.getLoc();
2606 std::string FunctionName;
2607 if (Lex.getKind() == lltok::GlobalVar) {
2608 FunctionName = Lex.getStrVal();
2609 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
2610 unsigned NameID = Lex.getUIntVal();
2612 if (NameID != NumberedVals.size())
2613 return TokError("function expected to be numbered '%" +
2614 utostr(NumberedVals.size()) + "'");
2616 return TokError("expected function name");
2621 if (Lex.getKind() != lltok::lparen)
2622 return TokError("expected '(' in function argument list");
2624 std::vector<ArgInfo> ArgList;
2627 std::string Section;
2631 if (ParseArgumentList(ArgList, isVarArg, false) ||
2632 ParseOptionalAttrs(FuncAttrs, 2) ||
2633 (EatIfPresent(lltok::kw_section) &&
2634 ParseStringConstant(Section)) ||
2635 ParseOptionalAlignment(Alignment) ||
2636 (EatIfPresent(lltok::kw_gc) &&
2637 ParseStringConstant(GC)))
2640 // If the alignment was parsed as an attribute, move to the alignment field.
2641 if (FuncAttrs & Attribute::Alignment) {
2642 Alignment = Attribute::getAlignmentFromAttrs(FuncAttrs);
2643 FuncAttrs &= ~Attribute::Alignment;
2646 // Okay, if we got here, the function is syntactically valid. Convert types
2647 // and do semantic checks.
2648 std::vector<const Type*> ParamTypeList;
2649 SmallVector<AttributeWithIndex, 8> Attrs;
2650 // FIXME : In 3.0, stop accepting zext, sext and inreg as optional function
2652 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
2653 if (FuncAttrs & ObsoleteFuncAttrs) {
2654 RetAttrs |= FuncAttrs & ObsoleteFuncAttrs;
2655 FuncAttrs &= ~ObsoleteFuncAttrs;
2658 if (RetAttrs != Attribute::None)
2659 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
2661 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2662 ParamTypeList.push_back(ArgList[i].Type);
2663 if (ArgList[i].Attrs != Attribute::None)
2664 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
2667 if (FuncAttrs != Attribute::None)
2668 Attrs.push_back(AttributeWithIndex::get(~0, FuncAttrs));
2670 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
2672 if (PAL.paramHasAttr(1, Attribute::StructRet) &&
2673 RetType != Type::getVoidTy(Context))
2674 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
2676 const FunctionType *FT =
2677 FunctionType::get(RetType, ParamTypeList, isVarArg);
2678 const PointerType *PFT = PointerType::getUnqual(FT);
2681 if (!FunctionName.empty()) {
2682 // If this was a definition of a forward reference, remove the definition
2683 // from the forward reference table and fill in the forward ref.
2684 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
2685 ForwardRefVals.find(FunctionName);
2686 if (FRVI != ForwardRefVals.end()) {
2687 Fn = M->getFunction(FunctionName);
2688 ForwardRefVals.erase(FRVI);
2689 } else if ((Fn = M->getFunction(FunctionName))) {
2690 // If this function already exists in the symbol table, then it is
2691 // multiply defined. We accept a few cases for old backwards compat.
2692 // FIXME: Remove this stuff for LLVM 3.0.
2693 if (Fn->getType() != PFT || Fn->getAttributes() != PAL ||
2694 (!Fn->isDeclaration() && isDefine)) {
2695 // If the redefinition has different type or different attributes,
2696 // reject it. If both have bodies, reject it.
2697 return Error(NameLoc, "invalid redefinition of function '" +
2698 FunctionName + "'");
2699 } else if (Fn->isDeclaration()) {
2700 // Make sure to strip off any argument names so we can't get conflicts.
2701 for (Function::arg_iterator AI = Fn->arg_begin(), AE = Fn->arg_end();
2705 } else if (M->getNamedValue(FunctionName)) {
2706 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
2710 // If this is a definition of a forward referenced function, make sure the
2712 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
2713 = ForwardRefValIDs.find(NumberedVals.size());
2714 if (I != ForwardRefValIDs.end()) {
2715 Fn = cast<Function>(I->second.first);
2716 if (Fn->getType() != PFT)
2717 return Error(NameLoc, "type of definition and forward reference of '@" +
2718 utostr(NumberedVals.size()) +"' disagree");
2719 ForwardRefValIDs.erase(I);
2724 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
2725 else // Move the forward-reference to the correct spot in the module.
2726 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
2728 if (FunctionName.empty())
2729 NumberedVals.push_back(Fn);
2731 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
2732 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
2733 Fn->setCallingConv(CC);
2734 Fn->setAttributes(PAL);
2735 Fn->setAlignment(Alignment);
2736 Fn->setSection(Section);
2737 if (!GC.empty()) Fn->setGC(GC.c_str());
2739 // Add all of the arguments we parsed to the function.
2740 Function::arg_iterator ArgIt = Fn->arg_begin();
2741 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
2742 // If we run out of arguments in the Function prototype, exit early.
2743 // FIXME: REMOVE THIS IN LLVM 3.0, this is just for the mismatch case above.
2744 if (ArgIt == Fn->arg_end()) break;
2746 // If the argument has a name, insert it into the argument symbol table.
2747 if (ArgList[i].Name.empty()) continue;
2749 // Set the name, if it conflicted, it will be auto-renamed.
2750 ArgIt->setName(ArgList[i].Name);
2752 if (ArgIt->getNameStr() != ArgList[i].Name)
2753 return Error(ArgList[i].Loc, "redefinition of argument '%" +
2754 ArgList[i].Name + "'");
2761 /// ParseFunctionBody
2762 /// ::= '{' BasicBlock+ '}'
2763 /// ::= 'begin' BasicBlock+ 'end' // FIXME: remove in LLVM 3.0
2765 bool LLParser::ParseFunctionBody(Function &Fn) {
2766 if (Lex.getKind() != lltok::lbrace && Lex.getKind() != lltok::kw_begin)
2767 return TokError("expected '{' in function body");
2768 Lex.Lex(); // eat the {.
2770 int FunctionNumber = -1;
2771 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
2773 PerFunctionState PFS(*this, Fn, FunctionNumber);
2775 while (Lex.getKind() != lltok::rbrace && Lex.getKind() != lltok::kw_end)
2776 if (ParseBasicBlock(PFS)) return true;
2781 // Verify function is ok.
2782 return PFS.FinishFunction();
2786 /// ::= LabelStr? Instruction*
2787 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
2788 // If this basic block starts out with a name, remember it.
2790 LocTy NameLoc = Lex.getLoc();
2791 if (Lex.getKind() == lltok::LabelStr) {
2792 Name = Lex.getStrVal();
2796 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
2797 if (BB == 0) return true;
2799 std::string NameStr;
2801 // Parse the instructions in this block until we get a terminator.
2804 // This instruction may have three possibilities for a name: a) none
2805 // specified, b) name specified "%foo =", c) number specified: "%4 =".
2806 LocTy NameLoc = Lex.getLoc();
2810 if (Lex.getKind() == lltok::LocalVarID) {
2811 NameID = Lex.getUIntVal();
2813 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
2815 } else if (Lex.getKind() == lltok::LocalVar ||
2816 // FIXME: REMOVE IN LLVM 3.0
2817 Lex.getKind() == lltok::StringConstant) {
2818 NameStr = Lex.getStrVal();
2820 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
2824 if (ParseInstruction(Inst, BB, PFS)) return true;
2825 if (EatIfPresent(lltok::comma))
2826 ParseOptionalCustomMetadata();
2828 // Set metadata attached with this instruction.
2829 MetadataContext &TheMetadata = M->getContext().getMetadata();
2830 for (SmallVector<std::pair<unsigned, MDNode *>, 2>::iterator
2831 MDI = MDsOnInst.begin(), MDE = MDsOnInst.end(); MDI != MDE; ++MDI)
2832 TheMetadata.addMD(MDI->first, MDI->second, Inst);
2835 BB->getInstList().push_back(Inst);
2837 // Set the name on the instruction.
2838 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
2839 } while (!isa<TerminatorInst>(Inst));
2844 //===----------------------------------------------------------------------===//
2845 // Instruction Parsing.
2846 //===----------------------------------------------------------------------===//
2848 /// ParseInstruction - Parse one of the many different instructions.
2850 bool LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
2851 PerFunctionState &PFS) {
2852 lltok::Kind Token = Lex.getKind();
2853 if (Token == lltok::Eof)
2854 return TokError("found end of file when expecting more instructions");
2855 LocTy Loc = Lex.getLoc();
2856 unsigned KeywordVal = Lex.getUIntVal();
2857 Lex.Lex(); // Eat the keyword.
2860 default: return Error(Loc, "expected instruction opcode");
2861 // Terminator Instructions.
2862 case lltok::kw_unwind: Inst = new UnwindInst(Context); return false;
2863 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
2864 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
2865 case lltok::kw_br: return ParseBr(Inst, PFS);
2866 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
2867 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
2868 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
2869 // Binary Operators.
2872 case lltok::kw_mul: {
2875 LocTy ModifierLoc = Lex.getLoc();
2876 if (EatIfPresent(lltok::kw_nuw))
2878 if (EatIfPresent(lltok::kw_nsw)) {
2880 if (EatIfPresent(lltok::kw_nuw))
2883 // API compatibility: Accept either integer or floating-point types.
2884 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 0);
2886 if (!Inst->getType()->isIntOrIntVector()) {
2888 return Error(ModifierLoc, "nuw only applies to integer operations");
2890 return Error(ModifierLoc, "nsw only applies to integer operations");
2893 cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
2895 cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
2899 case lltok::kw_fadd:
2900 case lltok::kw_fsub:
2901 case lltok::kw_fmul: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
2903 case lltok::kw_sdiv: {
2905 if (EatIfPresent(lltok::kw_exact))
2907 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 1);
2910 cast<BinaryOperator>(Inst)->setIsExact(true);
2914 case lltok::kw_udiv:
2915 case lltok::kw_urem:
2916 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
2917 case lltok::kw_fdiv:
2918 case lltok::kw_frem: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
2920 case lltok::kw_lshr:
2921 case lltok::kw_ashr:
2924 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
2925 case lltok::kw_icmp:
2926 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
2928 case lltok::kw_trunc:
2929 case lltok::kw_zext:
2930 case lltok::kw_sext:
2931 case lltok::kw_fptrunc:
2932 case lltok::kw_fpext:
2933 case lltok::kw_bitcast:
2934 case lltok::kw_uitofp:
2935 case lltok::kw_sitofp:
2936 case lltok::kw_fptoui:
2937 case lltok::kw_fptosi:
2938 case lltok::kw_inttoptr:
2939 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
2941 case lltok::kw_select: return ParseSelect(Inst, PFS);
2942 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
2943 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
2944 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
2945 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
2946 case lltok::kw_phi: return ParsePHI(Inst, PFS);
2947 case lltok::kw_call: return ParseCall(Inst, PFS, false);
2948 case lltok::kw_tail: return ParseCall(Inst, PFS, true);
2950 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
2951 case lltok::kw_malloc: return ParseAlloc(Inst, PFS, BB, false);
2952 case lltok::kw_free: return ParseFree(Inst, PFS, BB);
2953 case lltok::kw_load: return ParseLoad(Inst, PFS, false);
2954 case lltok::kw_store: return ParseStore(Inst, PFS, false);
2955 case lltok::kw_volatile:
2956 if (EatIfPresent(lltok::kw_load))
2957 return ParseLoad(Inst, PFS, true);
2958 else if (EatIfPresent(lltok::kw_store))
2959 return ParseStore(Inst, PFS, true);
2961 return TokError("expected 'load' or 'store'");
2962 case lltok::kw_getresult: return ParseGetResult(Inst, PFS);
2963 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
2964 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
2965 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
2969 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
2970 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
2971 if (Opc == Instruction::FCmp) {
2972 switch (Lex.getKind()) {
2973 default: TokError("expected fcmp predicate (e.g. 'oeq')");
2974 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
2975 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
2976 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
2977 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
2978 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
2979 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
2980 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
2981 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
2982 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
2983 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
2984 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
2985 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
2986 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
2987 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
2988 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
2989 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
2992 switch (Lex.getKind()) {
2993 default: TokError("expected icmp predicate (e.g. 'eq')");
2994 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
2995 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
2996 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
2997 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
2998 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
2999 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
3000 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
3001 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
3002 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
3003 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3010 //===----------------------------------------------------------------------===//
3011 // Terminator Instructions.
3012 //===----------------------------------------------------------------------===//
3014 /// ParseRet - Parse a return instruction.
3015 /// ::= 'ret' void (',' !dbg, !1)
3016 /// ::= 'ret' TypeAndValue (',' !dbg, !1)
3017 /// ::= 'ret' TypeAndValue (',' TypeAndValue)+ (',' !dbg, !1)
3018 /// [[obsolete: LLVM 3.0]]
3019 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3020 PerFunctionState &PFS) {
3021 PATypeHolder Ty(Type::getVoidTy(Context));
3022 if (ParseType(Ty, true /*void allowed*/)) return true;
3024 if (Ty->isVoidTy()) {
3025 Inst = ReturnInst::Create(Context);
3030 if (ParseValue(Ty, RV, PFS)) return true;
3032 if (EatIfPresent(lltok::comma)) {
3033 // Parse optional custom metadata, e.g. !dbg
3034 if (Lex.getKind() == lltok::NamedOrCustomMD) {
3035 if (ParseOptionalCustomMetadata()) return true;
3037 // The normal case is one return value.
3038 // FIXME: LLVM 3.0 remove MRV support for 'ret i32 1, i32 2', requiring use
3039 // of 'ret {i32,i32} {i32 1, i32 2}'
3040 SmallVector<Value*, 8> RVs;
3044 // If optional custom metadata, e.g. !dbg is seen then this is the
3046 if (Lex.getKind() == lltok::NamedOrCustomMD)
3048 if (ParseTypeAndValue(RV, PFS)) return true;
3050 } while (EatIfPresent(lltok::comma));
3052 RV = UndefValue::get(PFS.getFunction().getReturnType());
3053 for (unsigned i = 0, e = RVs.size(); i != e; ++i) {
3054 Instruction *I = InsertValueInst::Create(RV, RVs[i], i, "mrv");
3055 BB->getInstList().push_back(I);
3061 Inst = ReturnInst::Create(Context, RV);
3067 /// ::= 'br' TypeAndValue
3068 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3069 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
3072 BasicBlock *Op1, *Op2;
3073 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
3075 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
3076 Inst = BranchInst::Create(BB);
3080 if (Op0->getType() != Type::getInt1Ty(Context))
3081 return Error(Loc, "branch condition must have 'i1' type");
3083 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
3084 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
3085 ParseToken(lltok::comma, "expected ',' after true destination") ||
3086 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
3089 Inst = BranchInst::Create(Op1, Op2, Op0);
3095 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
3097 /// ::= (TypeAndValue ',' TypeAndValue)*
3098 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
3099 LocTy CondLoc, BBLoc;
3101 BasicBlock *DefaultBB;
3102 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
3103 ParseToken(lltok::comma, "expected ',' after switch condition") ||
3104 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
3105 ParseToken(lltok::lsquare, "expected '[' with switch table"))
3108 if (!isa<IntegerType>(Cond->getType()))
3109 return Error(CondLoc, "switch condition must have integer type");
3111 // Parse the jump table pairs.
3112 SmallPtrSet<Value*, 32> SeenCases;
3113 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
3114 while (Lex.getKind() != lltok::rsquare) {
3118 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
3119 ParseToken(lltok::comma, "expected ',' after case value") ||
3120 ParseTypeAndBasicBlock(DestBB, PFS))
3123 if (!SeenCases.insert(Constant))
3124 return Error(CondLoc, "duplicate case value in switch");
3125 if (!isa<ConstantInt>(Constant))
3126 return Error(CondLoc, "case value is not a constant integer");
3128 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
3131 Lex.Lex(); // Eat the ']'.
3133 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
3134 for (unsigned i = 0, e = Table.size(); i != e; ++i)
3135 SI->addCase(Table[i].first, Table[i].second);
3142 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
3143 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
3146 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
3147 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
3148 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
3151 if (!isa<PointerType>(Address->getType()))
3152 return Error(AddrLoc, "indirectbr address must have pointer type");
3154 // Parse the destination list.
3155 SmallVector<BasicBlock*, 16> DestList;
3157 if (Lex.getKind() != lltok::rsquare) {
3159 if (ParseTypeAndBasicBlock(DestBB, PFS))
3161 DestList.push_back(DestBB);
3163 while (EatIfPresent(lltok::comma)) {
3164 if (ParseTypeAndBasicBlock(DestBB, PFS))
3166 DestList.push_back(DestBB);
3170 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
3173 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
3174 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
3175 IBI->addDestination(DestList[i]);
3182 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3183 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3184 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3185 LocTy CallLoc = Lex.getLoc();
3186 unsigned RetAttrs, FnAttrs;
3188 PATypeHolder RetType(Type::getVoidTy(Context));
3191 SmallVector<ParamInfo, 16> ArgList;
3193 BasicBlock *NormalBB, *UnwindBB;
3194 if (ParseOptionalCallingConv(CC) ||
3195 ParseOptionalAttrs(RetAttrs, 1) ||
3196 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3197 ParseValID(CalleeID) ||
3198 ParseParameterList(ArgList, PFS) ||
3199 ParseOptionalAttrs(FnAttrs, 2) ||
3200 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3201 ParseTypeAndBasicBlock(NormalBB, PFS) ||
3202 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3203 ParseTypeAndBasicBlock(UnwindBB, PFS))
3206 // If RetType is a non-function pointer type, then this is the short syntax
3207 // for the call, which means that RetType is just the return type. Infer the
3208 // rest of the function argument types from the arguments that are present.
3209 const PointerType *PFTy = 0;
3210 const FunctionType *Ty = 0;
3211 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3212 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3213 // Pull out the types of all of the arguments...
3214 std::vector<const Type*> ParamTypes;
3215 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3216 ParamTypes.push_back(ArgList[i].V->getType());
3218 if (!FunctionType::isValidReturnType(RetType))
3219 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3221 Ty = FunctionType::get(RetType, ParamTypes, false);
3222 PFTy = PointerType::getUnqual(Ty);
3225 // Look up the callee.
3227 if (ConvertValIDToValue(PFTy, CalleeID, Callee, PFS)) return true;
3229 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
3230 // function attributes.
3231 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
3232 if (FnAttrs & ObsoleteFuncAttrs) {
3233 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
3234 FnAttrs &= ~ObsoleteFuncAttrs;
3237 // Set up the Attributes for the function.
3238 SmallVector<AttributeWithIndex, 8> Attrs;
3239 if (RetAttrs != Attribute::None)
3240 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3242 SmallVector<Value*, 8> Args;
3244 // Loop through FunctionType's arguments and ensure they are specified
3245 // correctly. Also, gather any parameter attributes.
3246 FunctionType::param_iterator I = Ty->param_begin();
3247 FunctionType::param_iterator E = Ty->param_end();
3248 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3249 const Type *ExpectedTy = 0;
3252 } else if (!Ty->isVarArg()) {
3253 return Error(ArgList[i].Loc, "too many arguments specified");
3256 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3257 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3258 ExpectedTy->getDescription() + "'");
3259 Args.push_back(ArgList[i].V);
3260 if (ArgList[i].Attrs != Attribute::None)
3261 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3265 return Error(CallLoc, "not enough parameters specified for call");
3267 if (FnAttrs != Attribute::None)
3268 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3270 // Finish off the Attributes and check them
3271 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3273 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB,
3274 Args.begin(), Args.end());
3275 II->setCallingConv(CC);
3276 II->setAttributes(PAL);
3283 //===----------------------------------------------------------------------===//
3284 // Binary Operators.
3285 //===----------------------------------------------------------------------===//
3288 /// ::= ArithmeticOps TypeAndValue ',' Value
3290 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3291 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3292 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3293 unsigned Opc, unsigned OperandType) {
3294 LocTy Loc; Value *LHS, *RHS;
3295 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3296 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3297 ParseValue(LHS->getType(), RHS, PFS))
3301 switch (OperandType) {
3302 default: llvm_unreachable("Unknown operand type!");
3303 case 0: // int or FP.
3304 Valid = LHS->getType()->isIntOrIntVector() ||
3305 LHS->getType()->isFPOrFPVector();
3307 case 1: Valid = LHS->getType()->isIntOrIntVector(); break;
3308 case 2: Valid = LHS->getType()->isFPOrFPVector(); break;
3312 return Error(Loc, "invalid operand type for instruction");
3314 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3319 /// ::= ArithmeticOps TypeAndValue ',' Value {
3320 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3322 LocTy Loc; Value *LHS, *RHS;
3323 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3324 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3325 ParseValue(LHS->getType(), RHS, PFS))
3328 if (!LHS->getType()->isIntOrIntVector())
3329 return Error(Loc,"instruction requires integer or integer vector operands");
3331 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3337 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3338 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3339 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3341 // Parse the integer/fp comparison predicate.
3345 if (ParseCmpPredicate(Pred, Opc) ||
3346 ParseTypeAndValue(LHS, Loc, PFS) ||
3347 ParseToken(lltok::comma, "expected ',' after compare value") ||
3348 ParseValue(LHS->getType(), RHS, PFS))
3351 if (Opc == Instruction::FCmp) {
3352 if (!LHS->getType()->isFPOrFPVector())
3353 return Error(Loc, "fcmp requires floating point operands");
3354 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3356 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
3357 if (!LHS->getType()->isIntOrIntVector() &&
3358 !isa<PointerType>(LHS->getType()))
3359 return Error(Loc, "icmp requires integer operands");
3360 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3365 //===----------------------------------------------------------------------===//
3366 // Other Instructions.
3367 //===----------------------------------------------------------------------===//
3371 /// ::= CastOpc TypeAndValue 'to' Type
3372 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
3374 LocTy Loc; Value *Op;
3375 PATypeHolder DestTy(Type::getVoidTy(Context));
3376 if (ParseTypeAndValue(Op, Loc, PFS) ||
3377 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
3381 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
3382 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
3383 return Error(Loc, "invalid cast opcode for cast from '" +
3384 Op->getType()->getDescription() + "' to '" +
3385 DestTy->getDescription() + "'");
3387 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
3392 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3393 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
3395 Value *Op0, *Op1, *Op2;
3396 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3397 ParseToken(lltok::comma, "expected ',' after select condition") ||
3398 ParseTypeAndValue(Op1, PFS) ||
3399 ParseToken(lltok::comma, "expected ',' after select value") ||
3400 ParseTypeAndValue(Op2, PFS))
3403 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
3404 return Error(Loc, Reason);
3406 Inst = SelectInst::Create(Op0, Op1, Op2);
3411 /// ::= 'va_arg' TypeAndValue ',' Type
3412 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
3414 PATypeHolder EltTy(Type::getVoidTy(Context));
3416 if (ParseTypeAndValue(Op, PFS) ||
3417 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
3418 ParseType(EltTy, TypeLoc))
3421 if (!EltTy->isFirstClassType())
3422 return Error(TypeLoc, "va_arg requires operand with first class type");
3424 Inst = new VAArgInst(Op, EltTy);
3428 /// ParseExtractElement
3429 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
3430 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
3433 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3434 ParseToken(lltok::comma, "expected ',' after extract value") ||
3435 ParseTypeAndValue(Op1, PFS))
3438 if (!ExtractElementInst::isValidOperands(Op0, Op1))
3439 return Error(Loc, "invalid extractelement operands");
3441 Inst = ExtractElementInst::Create(Op0, Op1);
3445 /// ParseInsertElement
3446 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3447 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
3449 Value *Op0, *Op1, *Op2;
3450 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3451 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3452 ParseTypeAndValue(Op1, PFS) ||
3453 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3454 ParseTypeAndValue(Op2, PFS))
3457 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
3458 return Error(Loc, "invalid insertelement operands");
3460 Inst = InsertElementInst::Create(Op0, Op1, Op2);
3464 /// ParseShuffleVector
3465 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3466 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
3468 Value *Op0, *Op1, *Op2;
3469 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3470 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
3471 ParseTypeAndValue(Op1, PFS) ||
3472 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
3473 ParseTypeAndValue(Op2, PFS))
3476 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
3477 return Error(Loc, "invalid extractelement operands");
3479 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
3484 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
3485 bool LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
3486 PATypeHolder Ty(Type::getVoidTy(Context));
3488 LocTy TypeLoc = Lex.getLoc();
3490 if (ParseType(Ty) ||
3491 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3492 ParseValue(Ty, Op0, PFS) ||
3493 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3494 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3495 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3498 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
3500 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
3502 if (!EatIfPresent(lltok::comma))
3505 if (Lex.getKind() == lltok::NamedOrCustomMD)
3508 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3509 ParseValue(Ty, Op0, PFS) ||
3510 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3511 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3512 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3516 if (Lex.getKind() == lltok::NamedOrCustomMD)
3517 if (ParseOptionalCustomMetadata()) return true;
3519 if (!Ty->isFirstClassType())
3520 return Error(TypeLoc, "phi node must have first class type");
3522 PHINode *PN = PHINode::Create(Ty);
3523 PN->reserveOperandSpace(PHIVals.size());
3524 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
3525 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
3531 /// ::= 'tail'? 'call' OptionalCallingConv OptionalAttrs Type Value
3532 /// ParameterList OptionalAttrs
3533 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
3535 unsigned RetAttrs, FnAttrs;
3537 PATypeHolder RetType(Type::getVoidTy(Context));
3540 SmallVector<ParamInfo, 16> ArgList;
3541 LocTy CallLoc = Lex.getLoc();
3543 if ((isTail && ParseToken(lltok::kw_call, "expected 'tail call'")) ||
3544 ParseOptionalCallingConv(CC) ||
3545 ParseOptionalAttrs(RetAttrs, 1) ||
3546 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3547 ParseValID(CalleeID) ||
3548 ParseParameterList(ArgList, PFS) ||
3549 ParseOptionalAttrs(FnAttrs, 2))
3552 // If RetType is a non-function pointer type, then this is the short syntax
3553 // for the call, which means that RetType is just the return type. Infer the
3554 // rest of the function argument types from the arguments that are present.
3555 const PointerType *PFTy = 0;
3556 const FunctionType *Ty = 0;
3557 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3558 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3559 // Pull out the types of all of the arguments...
3560 std::vector<const Type*> ParamTypes;
3561 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3562 ParamTypes.push_back(ArgList[i].V->getType());
3564 if (!FunctionType::isValidReturnType(RetType))
3565 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3567 Ty = FunctionType::get(RetType, ParamTypes, false);
3568 PFTy = PointerType::getUnqual(Ty);
3571 // Look up the callee.
3573 if (ConvertValIDToValue(PFTy, CalleeID, Callee, PFS)) return true;
3575 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
3576 // function attributes.
3577 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
3578 if (FnAttrs & ObsoleteFuncAttrs) {
3579 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
3580 FnAttrs &= ~ObsoleteFuncAttrs;
3583 // Set up the Attributes for the function.
3584 SmallVector<AttributeWithIndex, 8> Attrs;
3585 if (RetAttrs != Attribute::None)
3586 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3588 SmallVector<Value*, 8> Args;
3590 // Loop through FunctionType's arguments and ensure they are specified
3591 // correctly. Also, gather any parameter attributes.
3592 FunctionType::param_iterator I = Ty->param_begin();
3593 FunctionType::param_iterator E = Ty->param_end();
3594 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3595 const Type *ExpectedTy = 0;
3598 } else if (!Ty->isVarArg()) {
3599 return Error(ArgList[i].Loc, "too many arguments specified");
3602 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3603 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3604 ExpectedTy->getDescription() + "'");
3605 Args.push_back(ArgList[i].V);
3606 if (ArgList[i].Attrs != Attribute::None)
3607 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3611 return Error(CallLoc, "not enough parameters specified for call");
3613 if (FnAttrs != Attribute::None)
3614 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3616 // Finish off the Attributes and check them
3617 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3619 CallInst *CI = CallInst::Create(Callee, Args.begin(), Args.end());
3620 CI->setTailCall(isTail);
3621 CI->setCallingConv(CC);
3622 CI->setAttributes(PAL);
3627 //===----------------------------------------------------------------------===//
3628 // Memory Instructions.
3629 //===----------------------------------------------------------------------===//
3632 /// ::= 'malloc' Type (',' TypeAndValue)? (',' OptionalInfo)?
3633 /// ::= 'alloca' Type (',' TypeAndValue)? (',' OptionalInfo)?
3634 bool LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS,
3635 BasicBlock* BB, bool isAlloca) {
3636 PATypeHolder Ty(Type::getVoidTy(Context));
3639 unsigned Alignment = 0;
3640 if (ParseType(Ty)) return true;
3642 if (EatIfPresent(lltok::comma)) {
3643 if (Lex.getKind() == lltok::kw_align
3644 || Lex.getKind() == lltok::NamedOrCustomMD) {
3645 if (ParseOptionalInfo(Alignment)) return true;
3647 if (ParseTypeAndValue(Size, SizeLoc, PFS)) return true;
3648 if (EatIfPresent(lltok::comma))
3649 if (ParseOptionalInfo(Alignment)) return true;
3653 if (Size && Size->getType() != Type::getInt32Ty(Context))
3654 return Error(SizeLoc, "element count must be i32");
3657 Inst = new AllocaInst(Ty, Size, Alignment);
3661 // Autoupgrade old malloc instruction to malloc call.
3662 // FIXME: Remove in LLVM 3.0.
3663 const Type *IntPtrTy = Type::getInt32Ty(Context);
3664 Constant *AllocSize = ConstantExpr::getSizeOf(Ty);
3665 AllocSize = ConstantExpr::getTruncOrBitCast(AllocSize, IntPtrTy);
3667 // Prototype malloc as "void *(int32)".
3668 // This function is renamed as "malloc" in ValidateEndOfModule().
3669 MallocF = cast<Function>(
3670 M->getOrInsertFunction("", Type::getInt8PtrTy(Context), IntPtrTy, NULL));
3671 Inst = CallInst::CreateMalloc(BB, IntPtrTy, Ty, AllocSize, Size, MallocF);
3676 /// ::= 'free' TypeAndValue
3677 bool LLParser::ParseFree(Instruction *&Inst, PerFunctionState &PFS,
3679 Value *Val; LocTy Loc;
3680 if (ParseTypeAndValue(Val, Loc, PFS)) return true;
3681 if (!isa<PointerType>(Val->getType()))
3682 return Error(Loc, "operand to free must be a pointer");
3683 Inst = CallInst::CreateFree(Val, BB);
3688 /// ::= 'volatile'? 'load' TypeAndValue (',' OptionalInfo)?
3689 bool LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS,
3691 Value *Val; LocTy Loc;
3692 unsigned Alignment = 0;
3693 if (ParseTypeAndValue(Val, Loc, PFS)) return true;
3695 if (EatIfPresent(lltok::comma))
3696 if (ParseOptionalInfo(Alignment)) return true;
3698 if (!isa<PointerType>(Val->getType()) ||
3699 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
3700 return Error(Loc, "load operand must be a pointer to a first class type");
3702 Inst = new LoadInst(Val, "", isVolatile, Alignment);
3707 /// ::= 'volatile'? 'store' TypeAndValue ',' TypeAndValue (',' 'align' i32)?
3708 bool LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS,
3710 Value *Val, *Ptr; LocTy Loc, PtrLoc;
3711 unsigned Alignment = 0;
3712 if (ParseTypeAndValue(Val, Loc, PFS) ||
3713 ParseToken(lltok::comma, "expected ',' after store operand") ||
3714 ParseTypeAndValue(Ptr, PtrLoc, PFS))
3717 if (EatIfPresent(lltok::comma))
3718 if (ParseOptionalInfo(Alignment)) return true;
3720 if (!isa<PointerType>(Ptr->getType()))
3721 return Error(PtrLoc, "store operand must be a pointer");
3722 if (!Val->getType()->isFirstClassType())
3723 return Error(Loc, "store operand must be a first class value");
3724 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
3725 return Error(Loc, "stored value and pointer type do not match");
3727 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment);
3732 /// ::= 'getresult' TypeAndValue ',' i32
3733 /// FIXME: Remove support for getresult in LLVM 3.0
3734 bool LLParser::ParseGetResult(Instruction *&Inst, PerFunctionState &PFS) {
3735 Value *Val; LocTy ValLoc, EltLoc;
3737 if (ParseTypeAndValue(Val, ValLoc, PFS) ||
3738 ParseToken(lltok::comma, "expected ',' after getresult operand") ||
3739 ParseUInt32(Element, EltLoc))
3742 if (!isa<StructType>(Val->getType()) && !isa<ArrayType>(Val->getType()))
3743 return Error(ValLoc, "getresult inst requires an aggregate operand");
3744 if (!ExtractValueInst::getIndexedType(Val->getType(), Element))
3745 return Error(EltLoc, "invalid getresult index for value");
3746 Inst = ExtractValueInst::Create(Val, Element);
3750 /// ParseGetElementPtr
3751 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
3752 bool LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
3753 Value *Ptr, *Val; LocTy Loc, EltLoc;
3755 bool InBounds = EatIfPresent(lltok::kw_inbounds);
3757 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
3759 if (!isa<PointerType>(Ptr->getType()))
3760 return Error(Loc, "base of getelementptr must be a pointer");
3762 SmallVector<Value*, 16> Indices;
3763 while (EatIfPresent(lltok::comma)) {
3764 if (Lex.getKind() == lltok::NamedOrCustomMD)
3766 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
3767 if (!isa<IntegerType>(Val->getType()))
3768 return Error(EltLoc, "getelementptr index must be an integer");
3769 Indices.push_back(Val);
3771 if (Lex.getKind() == lltok::NamedOrCustomMD)
3772 if (ParseOptionalCustomMetadata()) return true;
3774 if (!GetElementPtrInst::getIndexedType(Ptr->getType(),
3775 Indices.begin(), Indices.end()))
3776 return Error(Loc, "invalid getelementptr indices");
3777 Inst = GetElementPtrInst::Create(Ptr, Indices.begin(), Indices.end());
3779 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
3783 /// ParseExtractValue
3784 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
3785 bool LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
3786 Value *Val; LocTy Loc;
3787 SmallVector<unsigned, 4> Indices;
3788 if (ParseTypeAndValue(Val, Loc, PFS) ||
3789 ParseIndexList(Indices))
3791 if (Lex.getKind() == lltok::NamedOrCustomMD)
3792 if (ParseOptionalCustomMetadata()) return true;
3794 if (!isa<StructType>(Val->getType()) && !isa<ArrayType>(Val->getType()))
3795 return Error(Loc, "extractvalue operand must be array or struct");
3797 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
3799 return Error(Loc, "invalid indices for extractvalue");
3800 Inst = ExtractValueInst::Create(Val, Indices.begin(), Indices.end());
3804 /// ParseInsertValue
3805 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
3806 bool LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
3807 Value *Val0, *Val1; LocTy Loc0, Loc1;
3808 SmallVector<unsigned, 4> Indices;
3809 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
3810 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
3811 ParseTypeAndValue(Val1, Loc1, PFS) ||
3812 ParseIndexList(Indices))
3814 if (Lex.getKind() == lltok::NamedOrCustomMD)
3815 if (ParseOptionalCustomMetadata()) return true;
3817 if (!isa<StructType>(Val0->getType()) && !isa<ArrayType>(Val0->getType()))
3818 return Error(Loc0, "extractvalue operand must be array or struct");
3820 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
3822 return Error(Loc0, "invalid indices for insertvalue");
3823 Inst = InsertValueInst::Create(Val0, Val1, Indices.begin(), Indices.end());
3827 //===----------------------------------------------------------------------===//
3828 // Embedded metadata.
3829 //===----------------------------------------------------------------------===//
3831 /// ParseMDNodeVector
3832 /// ::= Element (',' Element)*
3834 /// ::= 'null' | TypeAndValue
3835 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts) {
3836 assert(Lex.getKind() == lltok::lbrace);
3840 if (Lex.getKind() == lltok::kw_null) {
3844 PATypeHolder Ty(Type::getVoidTy(Context));
3845 if (ParseType(Ty)) return true;
3846 if (Lex.getKind() == lltok::Metadata) {
3848 MetadataBase *Node = 0;
3849 if (!ParseMDNode(Node))
3852 MetadataBase *MDS = 0;
3853 if (ParseMDString(MDS)) return true;
3858 if (ParseGlobalValue(Ty, C)) return true;
3863 } while (EatIfPresent(lltok::comma));