1 //===-- LLParser.cpp - Parser Class ---------------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines the parser class for .ll files.
12 //===----------------------------------------------------------------------===//
15 #include "llvm/AutoUpgrade.h"
16 #include "llvm/CallingConv.h"
17 #include "llvm/Constants.h"
18 #include "llvm/DerivedTypes.h"
19 #include "llvm/InlineAsm.h"
20 #include "llvm/Instructions.h"
21 #include "llvm/Module.h"
22 #include "llvm/Operator.h"
23 #include "llvm/ValueSymbolTable.h"
24 #include "llvm/ADT/SmallPtrSet.h"
25 #include "llvm/ADT/StringExtras.h"
26 #include "llvm/Support/ErrorHandling.h"
27 #include "llvm/Support/raw_ostream.h"
30 /// Run: module ::= toplevelentity*
31 bool LLParser::Run() {
35 return ParseTopLevelEntities() ||
36 ValidateEndOfModule();
39 /// ValidateEndOfModule - Do final validity and sanity checks at the end of the
41 bool LLParser::ValidateEndOfModule() {
42 // Update auto-upgraded malloc calls to "malloc".
43 // FIXME: Remove in LLVM 3.0.
45 MallocF->setName("malloc");
46 // If setName() does not set the name to "malloc", then there is already a
47 // declaration of "malloc". In that case, iterate over all calls to MallocF
48 // and get them to call the declared "malloc" instead.
49 if (MallocF->getName() != "malloc") {
50 Constant *RealMallocF = M->getFunction("malloc");
51 if (RealMallocF->getType() != MallocF->getType())
52 RealMallocF = ConstantExpr::getBitCast(RealMallocF, MallocF->getType());
53 MallocF->replaceAllUsesWith(RealMallocF);
54 MallocF->eraseFromParent();
60 // If there are entries in ForwardRefBlockAddresses at this point, they are
61 // references after the function was defined. Resolve those now.
62 while (!ForwardRefBlockAddresses.empty()) {
63 // Okay, we are referencing an already-parsed function, resolve them now.
65 const ValID &Fn = ForwardRefBlockAddresses.begin()->first;
66 if (Fn.Kind == ValID::t_GlobalName)
67 TheFn = M->getFunction(Fn.StrVal);
68 else if (Fn.UIntVal < NumberedVals.size())
69 TheFn = dyn_cast<Function>(NumberedVals[Fn.UIntVal]);
72 return Error(Fn.Loc, "unknown function referenced by blockaddress");
74 // Resolve all these references.
75 if (ResolveForwardRefBlockAddresses(TheFn,
76 ForwardRefBlockAddresses.begin()->second,
80 ForwardRefBlockAddresses.erase(ForwardRefBlockAddresses.begin());
84 if (!ForwardRefTypes.empty())
85 return Error(ForwardRefTypes.begin()->second.second,
86 "use of undefined type named '" +
87 ForwardRefTypes.begin()->first + "'");
88 if (!ForwardRefTypeIDs.empty())
89 return Error(ForwardRefTypeIDs.begin()->second.second,
90 "use of undefined type '%" +
91 utostr(ForwardRefTypeIDs.begin()->first) + "'");
93 if (!ForwardRefVals.empty())
94 return Error(ForwardRefVals.begin()->second.second,
95 "use of undefined value '@" + ForwardRefVals.begin()->first +
98 if (!ForwardRefValIDs.empty())
99 return Error(ForwardRefValIDs.begin()->second.second,
100 "use of undefined value '@" +
101 utostr(ForwardRefValIDs.begin()->first) + "'");
103 if (!ForwardRefMDNodes.empty())
104 return Error(ForwardRefMDNodes.begin()->second.second,
105 "use of undefined metadata '!" +
106 utostr(ForwardRefMDNodes.begin()->first) + "'");
109 // Look for intrinsic functions and CallInst that need to be upgraded
110 for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; )
111 UpgradeCallsToIntrinsic(FI++); // must be post-increment, as we remove
113 // Check debug info intrinsics.
114 CheckDebugInfoIntrinsics(M);
118 bool LLParser::ResolveForwardRefBlockAddresses(Function *TheFn,
119 std::vector<std::pair<ValID, GlobalValue*> > &Refs,
120 PerFunctionState *PFS) {
121 // Loop over all the references, resolving them.
122 for (unsigned i = 0, e = Refs.size(); i != e; ++i) {
125 if (Refs[i].first.Kind == ValID::t_LocalName)
126 Res = PFS->GetBB(Refs[i].first.StrVal, Refs[i].first.Loc);
128 Res = PFS->GetBB(Refs[i].first.UIntVal, Refs[i].first.Loc);
129 } else if (Refs[i].first.Kind == ValID::t_LocalID) {
130 return Error(Refs[i].first.Loc,
131 "cannot take address of numeric label after the function is defined");
133 Res = dyn_cast_or_null<BasicBlock>(
134 TheFn->getValueSymbolTable().lookup(Refs[i].first.StrVal));
138 return Error(Refs[i].first.Loc,
139 "referenced value is not a basic block");
141 // Get the BlockAddress for this and update references to use it.
142 BlockAddress *BA = BlockAddress::get(TheFn, Res);
143 Refs[i].second->replaceAllUsesWith(BA);
144 Refs[i].second->eraseFromParent();
150 //===----------------------------------------------------------------------===//
151 // Top-Level Entities
152 //===----------------------------------------------------------------------===//
154 bool LLParser::ParseTopLevelEntities() {
156 switch (Lex.getKind()) {
157 default: return TokError("expected top-level entity");
158 case lltok::Eof: return false;
159 //case lltok::kw_define:
160 case lltok::kw_declare: if (ParseDeclare()) return true; break;
161 case lltok::kw_define: if (ParseDefine()) return true; break;
162 case lltok::kw_module: if (ParseModuleAsm()) return true; break;
163 case lltok::kw_target: if (ParseTargetDefinition()) return true; break;
164 case lltok::kw_deplibs: if (ParseDepLibs()) return true; break;
165 case lltok::kw_type: if (ParseUnnamedType()) return true; break;
166 case lltok::LocalVarID: if (ParseUnnamedType()) return true; break;
167 case lltok::StringConstant: // FIXME: REMOVE IN LLVM 3.0
168 case lltok::LocalVar: if (ParseNamedType()) return true; break;
169 case lltok::GlobalID: if (ParseUnnamedGlobal()) return true; break;
170 case lltok::GlobalVar: if (ParseNamedGlobal()) return true; break;
171 case lltok::exclaim: if (ParseStandaloneMetadata()) return true; break;
172 case lltok::MetadataVar: if (ParseNamedMetadata()) return true; break;
174 // The Global variable production with no name can have many different
175 // optional leading prefixes, the production is:
176 // GlobalVar ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
177 // OptionalAddrSpace ('constant'|'global') ...
178 case lltok::kw_private : // OptionalLinkage
179 case lltok::kw_linker_private: // OptionalLinkage
180 case lltok::kw_internal: // OptionalLinkage
181 case lltok::kw_weak: // OptionalLinkage
182 case lltok::kw_weak_odr: // OptionalLinkage
183 case lltok::kw_linkonce: // OptionalLinkage
184 case lltok::kw_linkonce_odr: // OptionalLinkage
185 case lltok::kw_appending: // OptionalLinkage
186 case lltok::kw_dllexport: // OptionalLinkage
187 case lltok::kw_common: // OptionalLinkage
188 case lltok::kw_dllimport: // OptionalLinkage
189 case lltok::kw_extern_weak: // OptionalLinkage
190 case lltok::kw_external: { // OptionalLinkage
191 unsigned Linkage, Visibility;
192 if (ParseOptionalLinkage(Linkage) ||
193 ParseOptionalVisibility(Visibility) ||
194 ParseGlobal("", SMLoc(), Linkage, true, Visibility))
198 case lltok::kw_default: // OptionalVisibility
199 case lltok::kw_hidden: // OptionalVisibility
200 case lltok::kw_protected: { // OptionalVisibility
202 if (ParseOptionalVisibility(Visibility) ||
203 ParseGlobal("", SMLoc(), 0, false, Visibility))
208 case lltok::kw_thread_local: // OptionalThreadLocal
209 case lltok::kw_addrspace: // OptionalAddrSpace
210 case lltok::kw_constant: // GlobalType
211 case lltok::kw_global: // GlobalType
212 if (ParseGlobal("", SMLoc(), 0, false, 0)) return true;
220 /// ::= 'module' 'asm' STRINGCONSTANT
221 bool LLParser::ParseModuleAsm() {
222 assert(Lex.getKind() == lltok::kw_module);
226 if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
227 ParseStringConstant(AsmStr)) return true;
229 const std::string &AsmSoFar = M->getModuleInlineAsm();
230 if (AsmSoFar.empty())
231 M->setModuleInlineAsm(AsmStr);
233 M->setModuleInlineAsm(AsmSoFar+"\n"+AsmStr);
238 /// ::= 'target' 'triple' '=' STRINGCONSTANT
239 /// ::= 'target' 'datalayout' '=' STRINGCONSTANT
240 bool LLParser::ParseTargetDefinition() {
241 assert(Lex.getKind() == lltok::kw_target);
244 default: return TokError("unknown target property");
245 case lltok::kw_triple:
247 if (ParseToken(lltok::equal, "expected '=' after target triple") ||
248 ParseStringConstant(Str))
250 M->setTargetTriple(Str);
252 case lltok::kw_datalayout:
254 if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
255 ParseStringConstant(Str))
257 M->setDataLayout(Str);
263 /// ::= 'deplibs' '=' '[' ']'
264 /// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
265 bool LLParser::ParseDepLibs() {
266 assert(Lex.getKind() == lltok::kw_deplibs);
268 if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
269 ParseToken(lltok::lsquare, "expected '=' after deplibs"))
272 if (EatIfPresent(lltok::rsquare))
276 if (ParseStringConstant(Str)) return true;
279 while (EatIfPresent(lltok::comma)) {
280 if (ParseStringConstant(Str)) return true;
284 return ParseToken(lltok::rsquare, "expected ']' at end of list");
287 /// ParseUnnamedType:
289 /// ::= LocalVarID '=' 'type' type
290 bool LLParser::ParseUnnamedType() {
291 unsigned TypeID = NumberedTypes.size();
293 // Handle the LocalVarID form.
294 if (Lex.getKind() == lltok::LocalVarID) {
295 if (Lex.getUIntVal() != TypeID)
296 return Error(Lex.getLoc(), "type expected to be numbered '%" +
297 utostr(TypeID) + "'");
298 Lex.Lex(); // eat LocalVarID;
300 if (ParseToken(lltok::equal, "expected '=' after name"))
304 assert(Lex.getKind() == lltok::kw_type);
305 LocTy TypeLoc = Lex.getLoc();
306 Lex.Lex(); // eat kw_type
308 PATypeHolder Ty(Type::getVoidTy(Context));
309 if (ParseType(Ty)) return true;
311 // See if this type was previously referenced.
312 std::map<unsigned, std::pair<PATypeHolder, LocTy> >::iterator
313 FI = ForwardRefTypeIDs.find(TypeID);
314 if (FI != ForwardRefTypeIDs.end()) {
315 if (FI->second.first.get() == Ty)
316 return Error(TypeLoc, "self referential type is invalid");
318 cast<DerivedType>(FI->second.first.get())->refineAbstractTypeTo(Ty);
319 Ty = FI->second.first.get();
320 ForwardRefTypeIDs.erase(FI);
323 NumberedTypes.push_back(Ty);
329 /// ::= LocalVar '=' 'type' type
330 bool LLParser::ParseNamedType() {
331 std::string Name = Lex.getStrVal();
332 LocTy NameLoc = Lex.getLoc();
333 Lex.Lex(); // eat LocalVar.
335 PATypeHolder Ty(Type::getVoidTy(Context));
337 if (ParseToken(lltok::equal, "expected '=' after name") ||
338 ParseToken(lltok::kw_type, "expected 'type' after name") ||
342 // Set the type name, checking for conflicts as we do so.
343 bool AlreadyExists = M->addTypeName(Name, Ty);
344 if (!AlreadyExists) return false;
346 // See if this type is a forward reference. We need to eagerly resolve
347 // types to allow recursive type redefinitions below.
348 std::map<std::string, std::pair<PATypeHolder, LocTy> >::iterator
349 FI = ForwardRefTypes.find(Name);
350 if (FI != ForwardRefTypes.end()) {
351 if (FI->second.first.get() == Ty)
352 return Error(NameLoc, "self referential type is invalid");
354 cast<DerivedType>(FI->second.first.get())->refineAbstractTypeTo(Ty);
355 Ty = FI->second.first.get();
356 ForwardRefTypes.erase(FI);
359 // Inserting a name that is already defined, get the existing name.
360 const Type *Existing = M->getTypeByName(Name);
361 assert(Existing && "Conflict but no matching type?!");
363 // Otherwise, this is an attempt to redefine a type. That's okay if
364 // the redefinition is identical to the original.
365 // FIXME: REMOVE REDEFINITIONS IN LLVM 3.0
366 if (Existing == Ty) return false;
368 // Any other kind of (non-equivalent) redefinition is an error.
369 return Error(NameLoc, "redefinition of type named '" + Name + "' of type '" +
370 Ty->getDescription() + "'");
375 /// ::= 'declare' FunctionHeader
376 bool LLParser::ParseDeclare() {
377 assert(Lex.getKind() == lltok::kw_declare);
381 return ParseFunctionHeader(F, false);
385 /// ::= 'define' FunctionHeader '{' ...
386 bool LLParser::ParseDefine() {
387 assert(Lex.getKind() == lltok::kw_define);
391 return ParseFunctionHeader(F, true) ||
392 ParseFunctionBody(*F);
398 bool LLParser::ParseGlobalType(bool &IsConstant) {
399 if (Lex.getKind() == lltok::kw_constant)
401 else if (Lex.getKind() == lltok::kw_global)
405 return TokError("expected 'global' or 'constant'");
411 /// ParseUnnamedGlobal:
412 /// OptionalVisibility ALIAS ...
413 /// OptionalLinkage OptionalVisibility ... -> global variable
414 /// GlobalID '=' OptionalVisibility ALIAS ...
415 /// GlobalID '=' OptionalLinkage OptionalVisibility ... -> global variable
416 bool LLParser::ParseUnnamedGlobal() {
417 unsigned VarID = NumberedVals.size();
419 LocTy NameLoc = Lex.getLoc();
421 // Handle the GlobalID form.
422 if (Lex.getKind() == lltok::GlobalID) {
423 if (Lex.getUIntVal() != VarID)
424 return Error(Lex.getLoc(), "variable expected to be numbered '%" +
425 utostr(VarID) + "'");
426 Lex.Lex(); // eat GlobalID;
428 if (ParseToken(lltok::equal, "expected '=' after name"))
433 unsigned Linkage, Visibility;
434 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
435 ParseOptionalVisibility(Visibility))
438 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
439 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
440 return ParseAlias(Name, NameLoc, Visibility);
443 /// ParseNamedGlobal:
444 /// GlobalVar '=' OptionalVisibility ALIAS ...
445 /// GlobalVar '=' OptionalLinkage OptionalVisibility ... -> global variable
446 bool LLParser::ParseNamedGlobal() {
447 assert(Lex.getKind() == lltok::GlobalVar);
448 LocTy NameLoc = Lex.getLoc();
449 std::string Name = Lex.getStrVal();
453 unsigned Linkage, Visibility;
454 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
455 ParseOptionalLinkage(Linkage, HasLinkage) ||
456 ParseOptionalVisibility(Visibility))
459 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
460 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
461 return ParseAlias(Name, NameLoc, Visibility);
465 // ::= '!' STRINGCONSTANT
466 bool LLParser::ParseMDString(MDString *&Result) {
468 if (ParseStringConstant(Str)) return true;
469 Result = MDString::get(Context, Str);
474 // ::= '!' MDNodeNumber
475 bool LLParser::ParseMDNodeID(MDNode *&Result) {
476 // !{ ..., !42, ... }
478 if (ParseUInt32(MID)) return true;
480 // Check existing MDNode.
481 if (MID < NumberedMetadata.size() && NumberedMetadata[MID] != 0) {
482 Result = NumberedMetadata[MID];
486 // Create MDNode forward reference.
488 // FIXME: This is not unique enough!
489 std::string FwdRefName = "llvm.mdnode.fwdref." + utostr(MID);
490 Value *V = MDString::get(Context, FwdRefName);
491 MDNode *FwdNode = MDNode::get(Context, &V, 1);
492 ForwardRefMDNodes[MID] = std::make_pair(FwdNode, Lex.getLoc());
494 if (NumberedMetadata.size() <= MID)
495 NumberedMetadata.resize(MID+1);
496 NumberedMetadata[MID] = FwdNode;
501 /// ParseNamedMetadata:
502 /// !foo = !{ !1, !2 }
503 bool LLParser::ParseNamedMetadata() {
504 assert(Lex.getKind() == lltok::MetadataVar);
505 std::string Name = Lex.getStrVal();
508 if (ParseToken(lltok::equal, "expected '=' here") ||
509 ParseToken(lltok::exclaim, "Expected '!' here") ||
510 ParseToken(lltok::lbrace, "Expected '{' here"))
513 SmallVector<MetadataBase *, 8> Elts;
515 if (ParseToken(lltok::exclaim, "Expected '!' here"))
518 // FIXME: This rejects MDStrings. Are they legal in an named MDNode or not?
520 if (ParseMDNodeID(N)) return true;
522 } while (EatIfPresent(lltok::comma));
524 if (ParseToken(lltok::rbrace, "expected end of metadata node"))
527 NamedMDNode::Create(Context, Name, Elts.data(), Elts.size(), M);
531 /// ParseStandaloneMetadata:
533 bool LLParser::ParseStandaloneMetadata() {
534 assert(Lex.getKind() == lltok::exclaim);
536 unsigned MetadataID = 0;
539 PATypeHolder Ty(Type::getVoidTy(Context));
540 SmallVector<Value *, 16> Elts;
541 // FIXME: This doesn't make sense here. Pull braced MD stuff parsing out!
542 if (ParseUInt32(MetadataID) ||
543 ParseToken(lltok::equal, "expected '=' here") ||
544 ParseType(Ty, TyLoc) ||
545 ParseToken(lltok::exclaim, "Expected '!' here") ||
546 ParseToken(lltok::lbrace, "Expected '{' here") ||
547 ParseMDNodeVector(Elts) ||
548 ParseToken(lltok::rbrace, "expected end of metadata node"))
551 MDNode *Init = MDNode::get(Context, Elts.data(), Elts.size());
553 // See if this was forward referenced, if so, handle it.
554 std::map<unsigned, std::pair<TrackingVH<MDNode>, LocTy> >::iterator
555 FI = ForwardRefMDNodes.find(MetadataID);
556 if (FI != ForwardRefMDNodes.end()) {
557 FI->second.first->replaceAllUsesWith(Init);
558 ForwardRefMDNodes.erase(FI);
560 assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work");
562 if (MetadataID >= NumberedMetadata.size())
563 NumberedMetadata.resize(MetadataID+1);
565 if (NumberedMetadata[MetadataID] != 0)
566 return TokError("Metadata id is already used");
567 NumberedMetadata[MetadataID] = Init;
574 /// ::= GlobalVar '=' OptionalVisibility 'alias' OptionalLinkage Aliasee
577 /// ::= 'bitcast' '(' TypeAndValue 'to' Type ')'
578 /// ::= 'getelementptr' 'inbounds'? '(' ... ')'
580 /// Everything through visibility has already been parsed.
582 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc,
583 unsigned Visibility) {
584 assert(Lex.getKind() == lltok::kw_alias);
587 LocTy LinkageLoc = Lex.getLoc();
588 if (ParseOptionalLinkage(Linkage))
591 if (Linkage != GlobalValue::ExternalLinkage &&
592 Linkage != GlobalValue::WeakAnyLinkage &&
593 Linkage != GlobalValue::WeakODRLinkage &&
594 Linkage != GlobalValue::InternalLinkage &&
595 Linkage != GlobalValue::PrivateLinkage &&
596 Linkage != GlobalValue::LinkerPrivateLinkage)
597 return Error(LinkageLoc, "invalid linkage type for alias");
600 LocTy AliaseeLoc = Lex.getLoc();
601 if (Lex.getKind() != lltok::kw_bitcast &&
602 Lex.getKind() != lltok::kw_getelementptr) {
603 if (ParseGlobalTypeAndValue(Aliasee)) return true;
605 // The bitcast dest type is not present, it is implied by the dest type.
607 if (ParseValID(ID)) return true;
608 if (ID.Kind != ValID::t_Constant)
609 return Error(AliaseeLoc, "invalid aliasee");
610 Aliasee = ID.ConstantVal;
613 if (!isa<PointerType>(Aliasee->getType()))
614 return Error(AliaseeLoc, "alias must have pointer type");
616 // Okay, create the alias but do not insert it into the module yet.
617 GlobalAlias* GA = new GlobalAlias(Aliasee->getType(),
618 (GlobalValue::LinkageTypes)Linkage, Name,
620 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
622 // See if this value already exists in the symbol table. If so, it is either
623 // a redefinition or a definition of a forward reference.
624 if (GlobalValue *Val = M->getNamedValue(Name)) {
625 // See if this was a redefinition. If so, there is no entry in
627 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
628 I = ForwardRefVals.find(Name);
629 if (I == ForwardRefVals.end())
630 return Error(NameLoc, "redefinition of global named '@" + Name + "'");
632 // Otherwise, this was a definition of forward ref. Verify that types
634 if (Val->getType() != GA->getType())
635 return Error(NameLoc,
636 "forward reference and definition of alias have different types");
638 // If they agree, just RAUW the old value with the alias and remove the
640 Val->replaceAllUsesWith(GA);
641 Val->eraseFromParent();
642 ForwardRefVals.erase(I);
645 // Insert into the module, we know its name won't collide now.
646 M->getAliasList().push_back(GA);
647 assert(GA->getNameStr() == Name && "Should not be a name conflict!");
653 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalThreadLocal
654 /// OptionalAddrSpace GlobalType Type Const
655 /// ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
656 /// OptionalAddrSpace GlobalType Type Const
658 /// Everything through visibility has been parsed already.
660 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
661 unsigned Linkage, bool HasLinkage,
662 unsigned Visibility) {
664 bool ThreadLocal, IsConstant;
667 PATypeHolder Ty(Type::getVoidTy(Context));
668 if (ParseOptionalToken(lltok::kw_thread_local, ThreadLocal) ||
669 ParseOptionalAddrSpace(AddrSpace) ||
670 ParseGlobalType(IsConstant) ||
671 ParseType(Ty, TyLoc))
674 // If the linkage is specified and is external, then no initializer is
677 if (!HasLinkage || (Linkage != GlobalValue::DLLImportLinkage &&
678 Linkage != GlobalValue::ExternalWeakLinkage &&
679 Linkage != GlobalValue::ExternalLinkage)) {
680 if (ParseGlobalValue(Ty, Init))
684 if (isa<FunctionType>(Ty) || Ty->isLabelTy())
685 return Error(TyLoc, "invalid type for global variable");
687 GlobalVariable *GV = 0;
689 // See if the global was forward referenced, if so, use the global.
691 if (GlobalValue *GVal = M->getNamedValue(Name)) {
692 if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
693 return Error(NameLoc, "redefinition of global '@" + Name + "'");
694 GV = cast<GlobalVariable>(GVal);
697 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
698 I = ForwardRefValIDs.find(NumberedVals.size());
699 if (I != ForwardRefValIDs.end()) {
700 GV = cast<GlobalVariable>(I->second.first);
701 ForwardRefValIDs.erase(I);
706 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, 0,
707 Name, 0, false, AddrSpace);
709 if (GV->getType()->getElementType() != Ty)
711 "forward reference and definition of global have different types");
713 // Move the forward-reference to the correct spot in the module.
714 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
718 NumberedVals.push_back(GV);
720 // Set the parsed properties on the global.
722 GV->setInitializer(Init);
723 GV->setConstant(IsConstant);
724 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
725 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
726 GV->setThreadLocal(ThreadLocal);
728 // Parse attributes on the global.
729 while (Lex.getKind() == lltok::comma) {
732 if (Lex.getKind() == lltok::kw_section) {
734 GV->setSection(Lex.getStrVal());
735 if (ParseToken(lltok::StringConstant, "expected global section string"))
737 } else if (Lex.getKind() == lltok::kw_align) {
739 if (ParseOptionalAlignment(Alignment)) return true;
740 GV->setAlignment(Alignment);
742 TokError("unknown global variable property!");
750 //===----------------------------------------------------------------------===//
751 // GlobalValue Reference/Resolution Routines.
752 //===----------------------------------------------------------------------===//
754 /// GetGlobalVal - Get a value with the specified name or ID, creating a
755 /// forward reference record if needed. This can return null if the value
756 /// exists but does not have the right type.
757 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, const Type *Ty,
759 const PointerType *PTy = dyn_cast<PointerType>(Ty);
761 Error(Loc, "global variable reference must have pointer type");
765 // Look this name up in the normal function symbol table.
767 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
769 // If this is a forward reference for the value, see if we already created a
770 // forward ref record.
772 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
773 I = ForwardRefVals.find(Name);
774 if (I != ForwardRefVals.end())
775 Val = I->second.first;
778 // If we have the value in the symbol table or fwd-ref table, return it.
780 if (Val->getType() == Ty) return Val;
781 Error(Loc, "'@" + Name + "' defined with type '" +
782 Val->getType()->getDescription() + "'");
786 // Otherwise, create a new forward reference for this value and remember it.
788 if (const FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType())) {
789 // Function types can return opaque but functions can't.
790 if (isa<OpaqueType>(FT->getReturnType())) {
791 Error(Loc, "function may not return opaque type");
795 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
797 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
798 GlobalValue::ExternalWeakLinkage, 0, Name);
801 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
805 GlobalValue *LLParser::GetGlobalVal(unsigned ID, const Type *Ty, LocTy Loc) {
806 const PointerType *PTy = dyn_cast<PointerType>(Ty);
808 Error(Loc, "global variable reference must have pointer type");
812 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
814 // If this is a forward reference for the value, see if we already created a
815 // forward ref record.
817 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
818 I = ForwardRefValIDs.find(ID);
819 if (I != ForwardRefValIDs.end())
820 Val = I->second.first;
823 // If we have the value in the symbol table or fwd-ref table, return it.
825 if (Val->getType() == Ty) return Val;
826 Error(Loc, "'@" + utostr(ID) + "' defined with type '" +
827 Val->getType()->getDescription() + "'");
831 // Otherwise, create a new forward reference for this value and remember it.
833 if (const FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType())) {
834 // Function types can return opaque but functions can't.
835 if (isa<OpaqueType>(FT->getReturnType())) {
836 Error(Loc, "function may not return opaque type");
839 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
841 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
842 GlobalValue::ExternalWeakLinkage, 0, "");
845 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
850 //===----------------------------------------------------------------------===//
852 //===----------------------------------------------------------------------===//
854 /// ParseToken - If the current token has the specified kind, eat it and return
855 /// success. Otherwise, emit the specified error and return failure.
856 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
857 if (Lex.getKind() != T)
858 return TokError(ErrMsg);
863 /// ParseStringConstant
864 /// ::= StringConstant
865 bool LLParser::ParseStringConstant(std::string &Result) {
866 if (Lex.getKind() != lltok::StringConstant)
867 return TokError("expected string constant");
868 Result = Lex.getStrVal();
875 bool LLParser::ParseUInt32(unsigned &Val) {
876 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
877 return TokError("expected integer");
878 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
879 if (Val64 != unsigned(Val64))
880 return TokError("expected 32-bit integer (too large)");
887 /// ParseOptionalAddrSpace
889 /// := 'addrspace' '(' uint32 ')'
890 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
892 if (!EatIfPresent(lltok::kw_addrspace))
894 return ParseToken(lltok::lparen, "expected '(' in address space") ||
895 ParseUInt32(AddrSpace) ||
896 ParseToken(lltok::rparen, "expected ')' in address space");
899 /// ParseOptionalAttrs - Parse a potentially empty attribute list. AttrKind
900 /// indicates what kind of attribute list this is: 0: function arg, 1: result,
901 /// 2: function attr.
902 /// 3: function arg after value: FIXME: REMOVE IN LLVM 3.0
903 bool LLParser::ParseOptionalAttrs(unsigned &Attrs, unsigned AttrKind) {
904 Attrs = Attribute::None;
905 LocTy AttrLoc = Lex.getLoc();
908 switch (Lex.getKind()) {
911 // Treat these as signext/zeroext if they occur in the argument list after
912 // the value, as in "call i8 @foo(i8 10 sext)". If they occur before the
913 // value, as in "call i8 @foo(i8 sext (" then it is part of a constant
915 // FIXME: REMOVE THIS IN LLVM 3.0
917 if (Lex.getKind() == lltok::kw_sext)
918 Attrs |= Attribute::SExt;
920 Attrs |= Attribute::ZExt;
924 default: // End of attributes.
925 if (AttrKind != 2 && (Attrs & Attribute::FunctionOnly))
926 return Error(AttrLoc, "invalid use of function-only attribute");
928 if (AttrKind != 0 && AttrKind != 3 && (Attrs & Attribute::ParameterOnly))
929 return Error(AttrLoc, "invalid use of parameter-only attribute");
932 case lltok::kw_zeroext: Attrs |= Attribute::ZExt; break;
933 case lltok::kw_signext: Attrs |= Attribute::SExt; break;
934 case lltok::kw_inreg: Attrs |= Attribute::InReg; break;
935 case lltok::kw_sret: Attrs |= Attribute::StructRet; break;
936 case lltok::kw_noalias: Attrs |= Attribute::NoAlias; break;
937 case lltok::kw_nocapture: Attrs |= Attribute::NoCapture; break;
938 case lltok::kw_byval: Attrs |= Attribute::ByVal; break;
939 case lltok::kw_nest: Attrs |= Attribute::Nest; break;
941 case lltok::kw_noreturn: Attrs |= Attribute::NoReturn; break;
942 case lltok::kw_nounwind: Attrs |= Attribute::NoUnwind; break;
943 case lltok::kw_noinline: Attrs |= Attribute::NoInline; break;
944 case lltok::kw_readnone: Attrs |= Attribute::ReadNone; break;
945 case lltok::kw_readonly: Attrs |= Attribute::ReadOnly; break;
946 case lltok::kw_inlinehint: Attrs |= Attribute::InlineHint; break;
947 case lltok::kw_alwaysinline: Attrs |= Attribute::AlwaysInline; break;
948 case lltok::kw_optsize: Attrs |= Attribute::OptimizeForSize; break;
949 case lltok::kw_ssp: Attrs |= Attribute::StackProtect; break;
950 case lltok::kw_sspreq: Attrs |= Attribute::StackProtectReq; break;
951 case lltok::kw_noredzone: Attrs |= Attribute::NoRedZone; break;
952 case lltok::kw_noimplicitfloat: Attrs |= Attribute::NoImplicitFloat; break;
953 case lltok::kw_naked: Attrs |= Attribute::Naked; break;
955 case lltok::kw_align: {
957 if (ParseOptionalAlignment(Alignment))
959 Attrs |= Attribute::constructAlignmentFromInt(Alignment);
967 /// ParseOptionalLinkage
970 /// ::= 'linker_private'
975 /// ::= 'linkonce_odr'
980 /// ::= 'extern_weak'
982 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
984 switch (Lex.getKind()) {
985 default: Res=GlobalValue::ExternalLinkage; return false;
986 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
987 case lltok::kw_linker_private: Res = GlobalValue::LinkerPrivateLinkage; break;
988 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
989 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
990 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
991 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
992 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
993 case lltok::kw_available_externally:
994 Res = GlobalValue::AvailableExternallyLinkage;
996 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
997 case lltok::kw_dllexport: Res = GlobalValue::DLLExportLinkage; break;
998 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
999 case lltok::kw_dllimport: Res = GlobalValue::DLLImportLinkage; break;
1000 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1001 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1008 /// ParseOptionalVisibility
1014 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1015 switch (Lex.getKind()) {
1016 default: Res = GlobalValue::DefaultVisibility; return false;
1017 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1018 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1019 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1025 /// ParseOptionalCallingConv
1030 /// ::= 'x86_stdcallcc'
1031 /// ::= 'x86_fastcallcc'
1032 /// ::= 'arm_apcscc'
1033 /// ::= 'arm_aapcscc'
1034 /// ::= 'arm_aapcs_vfpcc'
1035 /// ::= 'msp430_intrcc'
1038 bool LLParser::ParseOptionalCallingConv(CallingConv::ID &CC) {
1039 switch (Lex.getKind()) {
1040 default: CC = CallingConv::C; return false;
1041 case lltok::kw_ccc: CC = CallingConv::C; break;
1042 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1043 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1044 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1045 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1046 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1047 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1048 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1049 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1050 case lltok::kw_cc: {
1051 unsigned ArbitraryCC;
1053 if (ParseUInt32(ArbitraryCC)) {
1056 CC = static_cast<CallingConv::ID>(ArbitraryCC);
1066 /// ParseInstructionMetadata
1067 /// ::= !dbg !42 (',' !dbg !57)*
1068 bool LLParser::ParseInstructionMetadata() {
1070 if (Lex.getKind() != lltok::MetadataVar)
1071 return TokError("expected metadata after comma");
1073 std::string Name = Lex.getStrVal();
1077 if (ParseToken(lltok::exclaim, "expected '!' here") ||
1078 ParseMDNodeID(Node))
1081 unsigned MDK = M->getMDKindID(Name.c_str());
1082 MDsOnInst.push_back(std::make_pair(MDK, Node));
1084 // If this is the end of the list, we're done.
1085 } while (EatIfPresent(lltok::comma));
1089 /// ParseOptionalAlignment
1092 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1094 if (!EatIfPresent(lltok::kw_align))
1096 LocTy AlignLoc = Lex.getLoc();
1097 if (ParseUInt32(Alignment)) return true;
1098 if (!isPowerOf2_32(Alignment))
1099 return Error(AlignLoc, "alignment is not a power of two");
1103 /// ParseOptionalInfo
1104 /// ::= OptionalInfo (',' OptionalInfo)+
1105 bool LLParser::ParseOptionalInfo(unsigned &Alignment) {
1107 // FIXME: Handle customized metadata info attached with an instruction.
1109 if (Lex.getKind() == lltok::MetadataVar) {
1110 if (ParseInstructionMetadata()) return true;
1111 } else if (Lex.getKind() == lltok::kw_align) {
1112 if (ParseOptionalAlignment(Alignment)) return true;
1115 } while (EatIfPresent(lltok::comma));
1121 /// ParseIndexList - This parses the index list for an insert/extractvalue
1122 /// instruction. This sets AteExtraComma in the case where we eat an extra
1123 /// comma at the end of the line and find that it is followed by metadata.
1124 /// Clients that don't allow metadata can call the version of this function that
1125 /// only takes one argument.
1128 /// ::= (',' uint32)+
1130 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1131 bool &AteExtraComma) {
1132 AteExtraComma = false;
1134 if (Lex.getKind() != lltok::comma)
1135 return TokError("expected ',' as start of index list");
1137 while (EatIfPresent(lltok::comma)) {
1138 if (Lex.getKind() == lltok::MetadataVar) {
1139 AteExtraComma = true;
1143 if (ParseUInt32(Idx)) return true;
1144 Indices.push_back(Idx);
1150 //===----------------------------------------------------------------------===//
1152 //===----------------------------------------------------------------------===//
1154 /// ParseType - Parse and resolve a full type.
1155 bool LLParser::ParseType(PATypeHolder &Result, bool AllowVoid) {
1156 LocTy TypeLoc = Lex.getLoc();
1157 if (ParseTypeRec(Result)) return true;
1159 // Verify no unresolved uprefs.
1160 if (!UpRefs.empty())
1161 return Error(UpRefs.back().Loc, "invalid unresolved type up reference");
1163 if (!AllowVoid && Result.get()->isVoidTy())
1164 return Error(TypeLoc, "void type only allowed for function results");
1169 /// HandleUpRefs - Every time we finish a new layer of types, this function is
1170 /// called. It loops through the UpRefs vector, which is a list of the
1171 /// currently active types. For each type, if the up-reference is contained in
1172 /// the newly completed type, we decrement the level count. When the level
1173 /// count reaches zero, the up-referenced type is the type that is passed in:
1174 /// thus we can complete the cycle.
1176 PATypeHolder LLParser::HandleUpRefs(const Type *ty) {
1177 // If Ty isn't abstract, or if there are no up-references in it, then there is
1178 // nothing to resolve here.
1179 if (!ty->isAbstract() || UpRefs.empty()) return ty;
1181 PATypeHolder Ty(ty);
1183 dbgs() << "Type '" << Ty->getDescription()
1184 << "' newly formed. Resolving upreferences.\n"
1185 << UpRefs.size() << " upreferences active!\n";
1188 // If we find any resolvable upreferences (i.e., those whose NestingLevel goes
1189 // to zero), we resolve them all together before we resolve them to Ty. At
1190 // the end of the loop, if there is anything to resolve to Ty, it will be in
1192 OpaqueType *TypeToResolve = 0;
1194 for (unsigned i = 0; i != UpRefs.size(); ++i) {
1195 // Determine if 'Ty' directly contains this up-references 'LastContainedTy'.
1197 std::find(Ty->subtype_begin(), Ty->subtype_end(),
1198 UpRefs[i].LastContainedTy) != Ty->subtype_end();
1201 dbgs() << " UR#" << i << " - TypeContains(" << Ty->getDescription() << ", "
1202 << UpRefs[i].LastContainedTy->getDescription() << ") = "
1203 << (ContainsType ? "true" : "false")
1204 << " level=" << UpRefs[i].NestingLevel << "\n";
1209 // Decrement level of upreference
1210 unsigned Level = --UpRefs[i].NestingLevel;
1211 UpRefs[i].LastContainedTy = Ty;
1213 // If the Up-reference has a non-zero level, it shouldn't be resolved yet.
1218 dbgs() << " * Resolving upreference for " << UpRefs[i].UpRefTy << "\n";
1221 TypeToResolve = UpRefs[i].UpRefTy;
1223 UpRefs[i].UpRefTy->refineAbstractTypeTo(TypeToResolve);
1224 UpRefs.erase(UpRefs.begin()+i); // Remove from upreference list.
1225 --i; // Do not skip the next element.
1229 TypeToResolve->refineAbstractTypeTo(Ty);
1235 /// ParseTypeRec - The recursive function used to process the internal
1236 /// implementation details of types.
1237 bool LLParser::ParseTypeRec(PATypeHolder &Result) {
1238 switch (Lex.getKind()) {
1240 return TokError("expected type");
1242 // TypeRec ::= 'float' | 'void' (etc)
1243 Result = Lex.getTyVal();
1246 case lltok::kw_opaque:
1247 // TypeRec ::= 'opaque'
1248 Result = OpaqueType::get(Context);
1252 // TypeRec ::= '{' ... '}'
1253 if (ParseStructType(Result, false))
1256 case lltok::lsquare:
1257 // TypeRec ::= '[' ... ']'
1258 Lex.Lex(); // eat the lsquare.
1259 if (ParseArrayVectorType(Result, false))
1262 case lltok::less: // Either vector or packed struct.
1263 // TypeRec ::= '<' ... '>'
1265 if (Lex.getKind() == lltok::lbrace) {
1266 if (ParseStructType(Result, true) ||
1267 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1269 } else if (ParseArrayVectorType(Result, true))
1272 case lltok::LocalVar:
1273 case lltok::StringConstant: // FIXME: REMOVE IN LLVM 3.0
1275 if (const Type *T = M->getTypeByName(Lex.getStrVal())) {
1278 Result = OpaqueType::get(Context);
1279 ForwardRefTypes.insert(std::make_pair(Lex.getStrVal(),
1280 std::make_pair(Result,
1282 M->addTypeName(Lex.getStrVal(), Result.get());
1287 case lltok::LocalVarID:
1289 if (Lex.getUIntVal() < NumberedTypes.size())
1290 Result = NumberedTypes[Lex.getUIntVal()];
1292 std::map<unsigned, std::pair<PATypeHolder, LocTy> >::iterator
1293 I = ForwardRefTypeIDs.find(Lex.getUIntVal());
1294 if (I != ForwardRefTypeIDs.end())
1295 Result = I->second.first;
1297 Result = OpaqueType::get(Context);
1298 ForwardRefTypeIDs.insert(std::make_pair(Lex.getUIntVal(),
1299 std::make_pair(Result,
1305 case lltok::backslash: {
1306 // TypeRec ::= '\' 4
1309 if (ParseUInt32(Val)) return true;
1310 OpaqueType *OT = OpaqueType::get(Context); //Use temporary placeholder.
1311 UpRefs.push_back(UpRefRecord(Lex.getLoc(), Val, OT));
1317 // Parse the type suffixes.
1319 switch (Lex.getKind()) {
1321 default: return false;
1323 // TypeRec ::= TypeRec '*'
1325 if (Result.get()->isLabelTy())
1326 return TokError("basic block pointers are invalid");
1327 if (Result.get()->isVoidTy())
1328 return TokError("pointers to void are invalid; use i8* instead");
1329 if (!PointerType::isValidElementType(Result.get()))
1330 return TokError("pointer to this type is invalid");
1331 Result = HandleUpRefs(PointerType::getUnqual(Result.get()));
1335 // TypeRec ::= TypeRec 'addrspace' '(' uint32 ')' '*'
1336 case lltok::kw_addrspace: {
1337 if (Result.get()->isLabelTy())
1338 return TokError("basic block pointers are invalid");
1339 if (Result.get()->isVoidTy())
1340 return TokError("pointers to void are invalid; use i8* instead");
1341 if (!PointerType::isValidElementType(Result.get()))
1342 return TokError("pointer to this type is invalid");
1344 if (ParseOptionalAddrSpace(AddrSpace) ||
1345 ParseToken(lltok::star, "expected '*' in address space"))
1348 Result = HandleUpRefs(PointerType::get(Result.get(), AddrSpace));
1352 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1354 if (ParseFunctionType(Result))
1361 /// ParseParameterList
1363 /// ::= '(' Arg (',' Arg)* ')'
1365 /// ::= Type OptionalAttributes Value OptionalAttributes
1366 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1367 PerFunctionState &PFS) {
1368 if (ParseToken(lltok::lparen, "expected '(' in call"))
1371 while (Lex.getKind() != lltok::rparen) {
1372 // If this isn't the first argument, we need a comma.
1373 if (!ArgList.empty() &&
1374 ParseToken(lltok::comma, "expected ',' in argument list"))
1377 // Parse the argument.
1379 PATypeHolder ArgTy(Type::getVoidTy(Context));
1380 unsigned ArgAttrs1 = Attribute::None;
1381 unsigned ArgAttrs2 = Attribute::None;
1383 if (ParseType(ArgTy, ArgLoc))
1386 // Otherwise, handle normal operands.
1387 if (ParseOptionalAttrs(ArgAttrs1, 0) ||
1388 ParseValue(ArgTy, V, PFS) ||
1389 // FIXME: Should not allow attributes after the argument, remove this
1391 ParseOptionalAttrs(ArgAttrs2, 3))
1393 ArgList.push_back(ParamInfo(ArgLoc, V, ArgAttrs1|ArgAttrs2));
1396 Lex.Lex(); // Lex the ')'.
1402 /// ParseArgumentList - Parse the argument list for a function type or function
1403 /// prototype. If 'inType' is true then we are parsing a FunctionType.
1404 /// ::= '(' ArgTypeListI ')'
1408 /// ::= ArgTypeList ',' '...'
1409 /// ::= ArgType (',' ArgType)*
1411 bool LLParser::ParseArgumentList(std::vector<ArgInfo> &ArgList,
1412 bool &isVarArg, bool inType) {
1414 assert(Lex.getKind() == lltok::lparen);
1415 Lex.Lex(); // eat the (.
1417 if (Lex.getKind() == lltok::rparen) {
1419 } else if (Lex.getKind() == lltok::dotdotdot) {
1423 LocTy TypeLoc = Lex.getLoc();
1424 PATypeHolder ArgTy(Type::getVoidTy(Context));
1428 // If we're parsing a type, use ParseTypeRec, because we allow recursive
1429 // types (such as a function returning a pointer to itself). If parsing a
1430 // function prototype, we require fully resolved types.
1431 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1432 ParseOptionalAttrs(Attrs, 0)) return true;
1434 if (ArgTy->isVoidTy())
1435 return Error(TypeLoc, "argument can not have void type");
1437 if (Lex.getKind() == lltok::LocalVar ||
1438 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1439 Name = Lex.getStrVal();
1443 if (!FunctionType::isValidArgumentType(ArgTy))
1444 return Error(TypeLoc, "invalid type for function argument");
1446 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1448 while (EatIfPresent(lltok::comma)) {
1449 // Handle ... at end of arg list.
1450 if (EatIfPresent(lltok::dotdotdot)) {
1455 // Otherwise must be an argument type.
1456 TypeLoc = Lex.getLoc();
1457 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1458 ParseOptionalAttrs(Attrs, 0)) return true;
1460 if (ArgTy->isVoidTy())
1461 return Error(TypeLoc, "argument can not have void type");
1463 if (Lex.getKind() == lltok::LocalVar ||
1464 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1465 Name = Lex.getStrVal();
1471 if (!ArgTy->isFirstClassType() && !isa<OpaqueType>(ArgTy))
1472 return Error(TypeLoc, "invalid type for function argument");
1474 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1478 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1481 /// ParseFunctionType
1482 /// ::= Type ArgumentList OptionalAttrs
1483 bool LLParser::ParseFunctionType(PATypeHolder &Result) {
1484 assert(Lex.getKind() == lltok::lparen);
1486 if (!FunctionType::isValidReturnType(Result))
1487 return TokError("invalid function return type");
1489 std::vector<ArgInfo> ArgList;
1492 if (ParseArgumentList(ArgList, isVarArg, true) ||
1493 // FIXME: Allow, but ignore attributes on function types!
1494 // FIXME: Remove in LLVM 3.0
1495 ParseOptionalAttrs(Attrs, 2))
1498 // Reject names on the arguments lists.
1499 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1500 if (!ArgList[i].Name.empty())
1501 return Error(ArgList[i].Loc, "argument name invalid in function type");
1502 if (!ArgList[i].Attrs != 0) {
1503 // Allow but ignore attributes on function types; this permits
1505 // FIXME: REJECT ATTRIBUTES ON FUNCTION TYPES in LLVM 3.0
1509 std::vector<const Type*> ArgListTy;
1510 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1511 ArgListTy.push_back(ArgList[i].Type);
1513 Result = HandleUpRefs(FunctionType::get(Result.get(),
1514 ArgListTy, isVarArg));
1518 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
1521 /// ::= '{' TypeRec (',' TypeRec)* '}'
1522 /// ::= '<' '{' '}' '>'
1523 /// ::= '<' '{' TypeRec (',' TypeRec)* '}' '>'
1524 bool LLParser::ParseStructType(PATypeHolder &Result, bool Packed) {
1525 assert(Lex.getKind() == lltok::lbrace);
1526 Lex.Lex(); // Consume the '{'
1528 if (EatIfPresent(lltok::rbrace)) {
1529 Result = StructType::get(Context, Packed);
1533 std::vector<PATypeHolder> ParamsList;
1534 LocTy EltTyLoc = Lex.getLoc();
1535 if (ParseTypeRec(Result)) return true;
1536 ParamsList.push_back(Result);
1538 if (Result->isVoidTy())
1539 return Error(EltTyLoc, "struct element can not have void type");
1540 if (!StructType::isValidElementType(Result))
1541 return Error(EltTyLoc, "invalid element type for struct");
1543 while (EatIfPresent(lltok::comma)) {
1544 EltTyLoc = Lex.getLoc();
1545 if (ParseTypeRec(Result)) return true;
1547 if (Result->isVoidTy())
1548 return Error(EltTyLoc, "struct element can not have void type");
1549 if (!StructType::isValidElementType(Result))
1550 return Error(EltTyLoc, "invalid element type for struct");
1552 ParamsList.push_back(Result);
1555 if (ParseToken(lltok::rbrace, "expected '}' at end of struct"))
1558 std::vector<const Type*> ParamsListTy;
1559 for (unsigned i = 0, e = ParamsList.size(); i != e; ++i)
1560 ParamsListTy.push_back(ParamsList[i].get());
1561 Result = HandleUpRefs(StructType::get(Context, ParamsListTy, Packed));
1565 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
1566 /// token has already been consumed.
1568 /// ::= '[' APSINTVAL 'x' Types ']'
1569 /// ::= '<' APSINTVAL 'x' Types '>'
1570 bool LLParser::ParseArrayVectorType(PATypeHolder &Result, bool isVector) {
1571 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
1572 Lex.getAPSIntVal().getBitWidth() > 64)
1573 return TokError("expected number in address space");
1575 LocTy SizeLoc = Lex.getLoc();
1576 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
1579 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
1582 LocTy TypeLoc = Lex.getLoc();
1583 PATypeHolder EltTy(Type::getVoidTy(Context));
1584 if (ParseTypeRec(EltTy)) return true;
1586 if (EltTy->isVoidTy())
1587 return Error(TypeLoc, "array and vector element type cannot be void");
1589 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
1590 "expected end of sequential type"))
1595 return Error(SizeLoc, "zero element vector is illegal");
1596 if ((unsigned)Size != Size)
1597 return Error(SizeLoc, "size too large for vector");
1598 if (!VectorType::isValidElementType(EltTy))
1599 return Error(TypeLoc, "vector element type must be fp or integer");
1600 Result = VectorType::get(EltTy, unsigned(Size));
1602 if (!ArrayType::isValidElementType(EltTy))
1603 return Error(TypeLoc, "invalid array element type");
1604 Result = HandleUpRefs(ArrayType::get(EltTy, Size));
1609 //===----------------------------------------------------------------------===//
1610 // Function Semantic Analysis.
1611 //===----------------------------------------------------------------------===//
1613 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
1615 : P(p), F(f), FunctionNumber(functionNumber) {
1617 // Insert unnamed arguments into the NumberedVals list.
1618 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
1621 NumberedVals.push_back(AI);
1624 LLParser::PerFunctionState::~PerFunctionState() {
1625 // If there were any forward referenced non-basicblock values, delete them.
1626 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
1627 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
1628 if (!isa<BasicBlock>(I->second.first)) {
1629 I->second.first->replaceAllUsesWith(
1630 UndefValue::get(I->second.first->getType()));
1631 delete I->second.first;
1632 I->second.first = 0;
1635 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1636 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
1637 if (!isa<BasicBlock>(I->second.first)) {
1638 I->second.first->replaceAllUsesWith(
1639 UndefValue::get(I->second.first->getType()));
1640 delete I->second.first;
1641 I->second.first = 0;
1645 bool LLParser::PerFunctionState::FinishFunction() {
1646 // Check to see if someone took the address of labels in this block.
1647 if (!P.ForwardRefBlockAddresses.empty()) {
1649 if (!F.getName().empty()) {
1650 FunctionID.Kind = ValID::t_GlobalName;
1651 FunctionID.StrVal = F.getName();
1653 FunctionID.Kind = ValID::t_GlobalID;
1654 FunctionID.UIntVal = FunctionNumber;
1657 std::map<ValID, std::vector<std::pair<ValID, GlobalValue*> > >::iterator
1658 FRBAI = P.ForwardRefBlockAddresses.find(FunctionID);
1659 if (FRBAI != P.ForwardRefBlockAddresses.end()) {
1660 // Resolve all these references.
1661 if (P.ResolveForwardRefBlockAddresses(&F, FRBAI->second, this))
1664 P.ForwardRefBlockAddresses.erase(FRBAI);
1668 if (!ForwardRefVals.empty())
1669 return P.Error(ForwardRefVals.begin()->second.second,
1670 "use of undefined value '%" + ForwardRefVals.begin()->first +
1672 if (!ForwardRefValIDs.empty())
1673 return P.Error(ForwardRefValIDs.begin()->second.second,
1674 "use of undefined value '%" +
1675 utostr(ForwardRefValIDs.begin()->first) + "'");
1680 /// GetVal - Get a value with the specified name or ID, creating a
1681 /// forward reference record if needed. This can return null if the value
1682 /// exists but does not have the right type.
1683 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
1684 const Type *Ty, LocTy Loc) {
1685 // Look this name up in the normal function symbol table.
1686 Value *Val = F.getValueSymbolTable().lookup(Name);
1688 // If this is a forward reference for the value, see if we already created a
1689 // forward ref record.
1691 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1692 I = ForwardRefVals.find(Name);
1693 if (I != ForwardRefVals.end())
1694 Val = I->second.first;
1697 // If we have the value in the symbol table or fwd-ref table, return it.
1699 if (Val->getType() == Ty) return Val;
1700 if (Ty->isLabelTy())
1701 P.Error(Loc, "'%" + Name + "' is not a basic block");
1703 P.Error(Loc, "'%" + Name + "' defined with type '" +
1704 Val->getType()->getDescription() + "'");
1708 // Don't make placeholders with invalid type.
1709 if (!Ty->isFirstClassType() && !isa<OpaqueType>(Ty) &&
1710 Ty != Type::getLabelTy(F.getContext())) {
1711 P.Error(Loc, "invalid use of a non-first-class type");
1715 // Otherwise, create a new forward reference for this value and remember it.
1717 if (Ty->isLabelTy())
1718 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
1720 FwdVal = new Argument(Ty, Name);
1722 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1726 Value *LLParser::PerFunctionState::GetVal(unsigned ID, const Type *Ty,
1728 // Look this name up in the normal function symbol table.
1729 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
1731 // If this is a forward reference for the value, see if we already created a
1732 // forward ref record.
1734 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1735 I = ForwardRefValIDs.find(ID);
1736 if (I != ForwardRefValIDs.end())
1737 Val = I->second.first;
1740 // If we have the value in the symbol table or fwd-ref table, return it.
1742 if (Val->getType() == Ty) return Val;
1743 if (Ty->isLabelTy())
1744 P.Error(Loc, "'%" + utostr(ID) + "' is not a basic block");
1746 P.Error(Loc, "'%" + utostr(ID) + "' defined with type '" +
1747 Val->getType()->getDescription() + "'");
1751 if (!Ty->isFirstClassType() && !isa<OpaqueType>(Ty) &&
1752 Ty != Type::getLabelTy(F.getContext())) {
1753 P.Error(Loc, "invalid use of a non-first-class type");
1757 // Otherwise, create a new forward reference for this value and remember it.
1759 if (Ty->isLabelTy())
1760 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
1762 FwdVal = new Argument(Ty);
1764 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1768 /// SetInstName - After an instruction is parsed and inserted into its
1769 /// basic block, this installs its name.
1770 bool LLParser::PerFunctionState::SetInstName(int NameID,
1771 const std::string &NameStr,
1772 LocTy NameLoc, Instruction *Inst) {
1773 // If this instruction has void type, it cannot have a name or ID specified.
1774 if (Inst->getType()->isVoidTy()) {
1775 if (NameID != -1 || !NameStr.empty())
1776 return P.Error(NameLoc, "instructions returning void cannot have a name");
1780 // If this was a numbered instruction, verify that the instruction is the
1781 // expected value and resolve any forward references.
1782 if (NameStr.empty()) {
1783 // If neither a name nor an ID was specified, just use the next ID.
1785 NameID = NumberedVals.size();
1787 if (unsigned(NameID) != NumberedVals.size())
1788 return P.Error(NameLoc, "instruction expected to be numbered '%" +
1789 utostr(NumberedVals.size()) + "'");
1791 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
1792 ForwardRefValIDs.find(NameID);
1793 if (FI != ForwardRefValIDs.end()) {
1794 if (FI->second.first->getType() != Inst->getType())
1795 return P.Error(NameLoc, "instruction forward referenced with type '" +
1796 FI->second.first->getType()->getDescription() + "'");
1797 FI->second.first->replaceAllUsesWith(Inst);
1798 delete FI->second.first;
1799 ForwardRefValIDs.erase(FI);
1802 NumberedVals.push_back(Inst);
1806 // Otherwise, the instruction had a name. Resolve forward refs and set it.
1807 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1808 FI = ForwardRefVals.find(NameStr);
1809 if (FI != ForwardRefVals.end()) {
1810 if (FI->second.first->getType() != Inst->getType())
1811 return P.Error(NameLoc, "instruction forward referenced with type '" +
1812 FI->second.first->getType()->getDescription() + "'");
1813 FI->second.first->replaceAllUsesWith(Inst);
1814 delete FI->second.first;
1815 ForwardRefVals.erase(FI);
1818 // Set the name on the instruction.
1819 Inst->setName(NameStr);
1821 if (Inst->getNameStr() != NameStr)
1822 return P.Error(NameLoc, "multiple definition of local value named '" +
1827 /// GetBB - Get a basic block with the specified name or ID, creating a
1828 /// forward reference record if needed.
1829 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
1831 return cast_or_null<BasicBlock>(GetVal(Name,
1832 Type::getLabelTy(F.getContext()), Loc));
1835 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
1836 return cast_or_null<BasicBlock>(GetVal(ID,
1837 Type::getLabelTy(F.getContext()), Loc));
1840 /// DefineBB - Define the specified basic block, which is either named or
1841 /// unnamed. If there is an error, this returns null otherwise it returns
1842 /// the block being defined.
1843 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
1847 BB = GetBB(NumberedVals.size(), Loc);
1849 BB = GetBB(Name, Loc);
1850 if (BB == 0) return 0; // Already diagnosed error.
1852 // Move the block to the end of the function. Forward ref'd blocks are
1853 // inserted wherever they happen to be referenced.
1854 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
1856 // Remove the block from forward ref sets.
1858 ForwardRefValIDs.erase(NumberedVals.size());
1859 NumberedVals.push_back(BB);
1861 // BB forward references are already in the function symbol table.
1862 ForwardRefVals.erase(Name);
1868 //===----------------------------------------------------------------------===//
1870 //===----------------------------------------------------------------------===//
1872 /// ParseValID - Parse an abstract value that doesn't necessarily have a
1873 /// type implied. For example, if we parse "4" we don't know what integer type
1874 /// it has. The value will later be combined with its type and checked for
1876 bool LLParser::ParseValID(ValID &ID) {
1877 ID.Loc = Lex.getLoc();
1878 switch (Lex.getKind()) {
1879 default: return TokError("expected value token");
1880 case lltok::GlobalID: // @42
1881 ID.UIntVal = Lex.getUIntVal();
1882 ID.Kind = ValID::t_GlobalID;
1884 case lltok::GlobalVar: // @foo
1885 ID.StrVal = Lex.getStrVal();
1886 ID.Kind = ValID::t_GlobalName;
1888 case lltok::LocalVarID: // %42
1889 ID.UIntVal = Lex.getUIntVal();
1890 ID.Kind = ValID::t_LocalID;
1892 case lltok::LocalVar: // %foo
1893 case lltok::StringConstant: // "foo" - FIXME: REMOVE IN LLVM 3.0
1894 ID.StrVal = Lex.getStrVal();
1895 ID.Kind = ValID::t_LocalName;
1897 case lltok::exclaim: // !{...} MDNode, !"foo" MDString
1900 // FIXME: This doesn't belong here.
1901 if (EatIfPresent(lltok::lbrace)) {
1902 SmallVector<Value*, 16> Elts;
1903 if (ParseMDNodeVector(Elts) ||
1904 ParseToken(lltok::rbrace, "expected end of metadata node"))
1907 ID.MDNodeVal = MDNode::get(Context, Elts.data(), Elts.size());
1908 ID.Kind = ValID::t_MDNode;
1912 // Standalone metadata reference
1913 // !{ ..., !42, ... }
1914 if (Lex.getKind() == lltok::APSInt) {
1915 if (ParseMDNodeID(ID.MDNodeVal)) return true;
1916 ID.Kind = ValID::t_MDNode;
1921 // ::= '!' STRINGCONSTANT
1922 if (ParseMDString(ID.MDStringVal)) return true;
1923 ID.Kind = ValID::t_MDString;
1926 ID.APSIntVal = Lex.getAPSIntVal();
1927 ID.Kind = ValID::t_APSInt;
1929 case lltok::APFloat:
1930 ID.APFloatVal = Lex.getAPFloatVal();
1931 ID.Kind = ValID::t_APFloat;
1933 case lltok::kw_true:
1934 ID.ConstantVal = ConstantInt::getTrue(Context);
1935 ID.Kind = ValID::t_Constant;
1937 case lltok::kw_false:
1938 ID.ConstantVal = ConstantInt::getFalse(Context);
1939 ID.Kind = ValID::t_Constant;
1941 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
1942 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
1943 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
1945 case lltok::lbrace: {
1946 // ValID ::= '{' ConstVector '}'
1948 SmallVector<Constant*, 16> Elts;
1949 if (ParseGlobalValueVector(Elts) ||
1950 ParseToken(lltok::rbrace, "expected end of struct constant"))
1953 ID.ConstantVal = ConstantStruct::get(Context, Elts.data(),
1954 Elts.size(), false);
1955 ID.Kind = ValID::t_Constant;
1959 // ValID ::= '<' ConstVector '>' --> Vector.
1960 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
1962 bool isPackedStruct = EatIfPresent(lltok::lbrace);
1964 SmallVector<Constant*, 16> Elts;
1965 LocTy FirstEltLoc = Lex.getLoc();
1966 if (ParseGlobalValueVector(Elts) ||
1968 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
1969 ParseToken(lltok::greater, "expected end of constant"))
1972 if (isPackedStruct) {
1974 ConstantStruct::get(Context, Elts.data(), Elts.size(), true);
1975 ID.Kind = ValID::t_Constant;
1980 return Error(ID.Loc, "constant vector must not be empty");
1982 if (!Elts[0]->getType()->isInteger() &&
1983 !Elts[0]->getType()->isFloatingPoint())
1984 return Error(FirstEltLoc,
1985 "vector elements must have integer or floating point type");
1987 // Verify that all the vector elements have the same type.
1988 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
1989 if (Elts[i]->getType() != Elts[0]->getType())
1990 return Error(FirstEltLoc,
1991 "vector element #" + utostr(i) +
1992 " is not of type '" + Elts[0]->getType()->getDescription());
1994 ID.ConstantVal = ConstantVector::get(Elts.data(), Elts.size());
1995 ID.Kind = ValID::t_Constant;
1998 case lltok::lsquare: { // Array Constant
2000 SmallVector<Constant*, 16> Elts;
2001 LocTy FirstEltLoc = Lex.getLoc();
2002 if (ParseGlobalValueVector(Elts) ||
2003 ParseToken(lltok::rsquare, "expected end of array constant"))
2006 // Handle empty element.
2008 // Use undef instead of an array because it's inconvenient to determine
2009 // the element type at this point, there being no elements to examine.
2010 ID.Kind = ValID::t_EmptyArray;
2014 if (!Elts[0]->getType()->isFirstClassType())
2015 return Error(FirstEltLoc, "invalid array element type: " +
2016 Elts[0]->getType()->getDescription());
2018 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2020 // Verify all elements are correct type!
2021 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2022 if (Elts[i]->getType() != Elts[0]->getType())
2023 return Error(FirstEltLoc,
2024 "array element #" + utostr(i) +
2025 " is not of type '" +Elts[0]->getType()->getDescription());
2028 ID.ConstantVal = ConstantArray::get(ATy, Elts.data(), Elts.size());
2029 ID.Kind = ValID::t_Constant;
2032 case lltok::kw_c: // c "foo"
2034 ID.ConstantVal = ConstantArray::get(Context, Lex.getStrVal(), false);
2035 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2036 ID.Kind = ValID::t_Constant;
2039 case lltok::kw_asm: {
2040 // ValID ::= 'asm' SideEffect? AlignStack? STRINGCONSTANT ',' STRINGCONSTANT
2041 bool HasSideEffect, AlignStack;
2043 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2044 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2045 ParseStringConstant(ID.StrVal) ||
2046 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2047 ParseToken(lltok::StringConstant, "expected constraint string"))
2049 ID.StrVal2 = Lex.getStrVal();
2050 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1);
2051 ID.Kind = ValID::t_InlineAsm;
2055 case lltok::kw_blockaddress: {
2056 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2060 LocTy FnLoc, LabelLoc;
2062 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2064 ParseToken(lltok::comma, "expected comma in block address expression")||
2065 ParseValID(Label) ||
2066 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2069 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2070 return Error(Fn.Loc, "expected function name in blockaddress");
2071 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2072 return Error(Label.Loc, "expected basic block name in blockaddress");
2074 // Make a global variable as a placeholder for this reference.
2075 GlobalVariable *FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context),
2076 false, GlobalValue::InternalLinkage,
2078 ForwardRefBlockAddresses[Fn].push_back(std::make_pair(Label, FwdRef));
2079 ID.ConstantVal = FwdRef;
2080 ID.Kind = ValID::t_Constant;
2084 case lltok::kw_trunc:
2085 case lltok::kw_zext:
2086 case lltok::kw_sext:
2087 case lltok::kw_fptrunc:
2088 case lltok::kw_fpext:
2089 case lltok::kw_bitcast:
2090 case lltok::kw_uitofp:
2091 case lltok::kw_sitofp:
2092 case lltok::kw_fptoui:
2093 case lltok::kw_fptosi:
2094 case lltok::kw_inttoptr:
2095 case lltok::kw_ptrtoint: {
2096 unsigned Opc = Lex.getUIntVal();
2097 PATypeHolder DestTy(Type::getVoidTy(Context));
2100 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2101 ParseGlobalTypeAndValue(SrcVal) ||
2102 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2103 ParseType(DestTy) ||
2104 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2106 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2107 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2108 SrcVal->getType()->getDescription() + "' to '" +
2109 DestTy->getDescription() + "'");
2110 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2112 ID.Kind = ValID::t_Constant;
2115 case lltok::kw_extractvalue: {
2118 SmallVector<unsigned, 4> Indices;
2119 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2120 ParseGlobalTypeAndValue(Val) ||
2121 ParseIndexList(Indices) ||
2122 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2125 if (!isa<StructType>(Val->getType()) && !isa<ArrayType>(Val->getType()))
2126 return Error(ID.Loc, "extractvalue operand must be array or struct");
2127 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
2129 return Error(ID.Loc, "invalid indices for extractvalue");
2131 ConstantExpr::getExtractValue(Val, Indices.data(), Indices.size());
2132 ID.Kind = ValID::t_Constant;
2135 case lltok::kw_insertvalue: {
2137 Constant *Val0, *Val1;
2138 SmallVector<unsigned, 4> Indices;
2139 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2140 ParseGlobalTypeAndValue(Val0) ||
2141 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2142 ParseGlobalTypeAndValue(Val1) ||
2143 ParseIndexList(Indices) ||
2144 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2146 if (!isa<StructType>(Val0->getType()) && !isa<ArrayType>(Val0->getType()))
2147 return Error(ID.Loc, "extractvalue operand must be array or struct");
2148 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
2150 return Error(ID.Loc, "invalid indices for insertvalue");
2151 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1,
2152 Indices.data(), Indices.size());
2153 ID.Kind = ValID::t_Constant;
2156 case lltok::kw_icmp:
2157 case lltok::kw_fcmp: {
2158 unsigned PredVal, Opc = Lex.getUIntVal();
2159 Constant *Val0, *Val1;
2161 if (ParseCmpPredicate(PredVal, Opc) ||
2162 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2163 ParseGlobalTypeAndValue(Val0) ||
2164 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2165 ParseGlobalTypeAndValue(Val1) ||
2166 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2169 if (Val0->getType() != Val1->getType())
2170 return Error(ID.Loc, "compare operands must have the same type");
2172 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2174 if (Opc == Instruction::FCmp) {
2175 if (!Val0->getType()->isFPOrFPVector())
2176 return Error(ID.Loc, "fcmp requires floating point operands");
2177 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2179 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2180 if (!Val0->getType()->isIntOrIntVector() &&
2181 !isa<PointerType>(Val0->getType()))
2182 return Error(ID.Loc, "icmp requires pointer or integer operands");
2183 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2185 ID.Kind = ValID::t_Constant;
2189 // Binary Operators.
2191 case lltok::kw_fadd:
2193 case lltok::kw_fsub:
2195 case lltok::kw_fmul:
2196 case lltok::kw_udiv:
2197 case lltok::kw_sdiv:
2198 case lltok::kw_fdiv:
2199 case lltok::kw_urem:
2200 case lltok::kw_srem:
2201 case lltok::kw_frem: {
2205 unsigned Opc = Lex.getUIntVal();
2206 Constant *Val0, *Val1;
2208 LocTy ModifierLoc = Lex.getLoc();
2209 if (Opc == Instruction::Add ||
2210 Opc == Instruction::Sub ||
2211 Opc == Instruction::Mul) {
2212 if (EatIfPresent(lltok::kw_nuw))
2214 if (EatIfPresent(lltok::kw_nsw)) {
2216 if (EatIfPresent(lltok::kw_nuw))
2219 } else if (Opc == Instruction::SDiv) {
2220 if (EatIfPresent(lltok::kw_exact))
2223 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2224 ParseGlobalTypeAndValue(Val0) ||
2225 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2226 ParseGlobalTypeAndValue(Val1) ||
2227 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2229 if (Val0->getType() != Val1->getType())
2230 return Error(ID.Loc, "operands of constexpr must have same type");
2231 if (!Val0->getType()->isIntOrIntVector()) {
2233 return Error(ModifierLoc, "nuw only applies to integer operations");
2235 return Error(ModifierLoc, "nsw only applies to integer operations");
2237 // API compatibility: Accept either integer or floating-point types with
2238 // add, sub, and mul.
2239 if (!Val0->getType()->isIntOrIntVector() &&
2240 !Val0->getType()->isFPOrFPVector())
2241 return Error(ID.Loc,"constexpr requires integer, fp, or vector operands");
2243 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2244 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2245 if (Exact) Flags |= SDivOperator::IsExact;
2246 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2248 ID.Kind = ValID::t_Constant;
2252 // Logical Operations
2254 case lltok::kw_lshr:
2255 case lltok::kw_ashr:
2258 case lltok::kw_xor: {
2259 unsigned Opc = Lex.getUIntVal();
2260 Constant *Val0, *Val1;
2262 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2263 ParseGlobalTypeAndValue(Val0) ||
2264 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2265 ParseGlobalTypeAndValue(Val1) ||
2266 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2268 if (Val0->getType() != Val1->getType())
2269 return Error(ID.Loc, "operands of constexpr must have same type");
2270 if (!Val0->getType()->isIntOrIntVector())
2271 return Error(ID.Loc,
2272 "constexpr requires integer or integer vector operands");
2273 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2274 ID.Kind = ValID::t_Constant;
2278 case lltok::kw_getelementptr:
2279 case lltok::kw_shufflevector:
2280 case lltok::kw_insertelement:
2281 case lltok::kw_extractelement:
2282 case lltok::kw_select: {
2283 unsigned Opc = Lex.getUIntVal();
2284 SmallVector<Constant*, 16> Elts;
2285 bool InBounds = false;
2287 if (Opc == Instruction::GetElementPtr)
2288 InBounds = EatIfPresent(lltok::kw_inbounds);
2289 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2290 ParseGlobalValueVector(Elts) ||
2291 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2294 if (Opc == Instruction::GetElementPtr) {
2295 if (Elts.size() == 0 || !isa<PointerType>(Elts[0]->getType()))
2296 return Error(ID.Loc, "getelementptr requires pointer operand");
2298 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(),
2299 (Value**)(Elts.data() + 1),
2301 return Error(ID.Loc, "invalid indices for getelementptr");
2302 ID.ConstantVal = InBounds ?
2303 ConstantExpr::getInBoundsGetElementPtr(Elts[0],
2306 ConstantExpr::getGetElementPtr(Elts[0],
2307 Elts.data() + 1, Elts.size() - 1);
2308 } else if (Opc == Instruction::Select) {
2309 if (Elts.size() != 3)
2310 return Error(ID.Loc, "expected three operands to select");
2311 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2313 return Error(ID.Loc, Reason);
2314 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2315 } else if (Opc == Instruction::ShuffleVector) {
2316 if (Elts.size() != 3)
2317 return Error(ID.Loc, "expected three operands to shufflevector");
2318 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2319 return Error(ID.Loc, "invalid operands to shufflevector");
2321 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2322 } else if (Opc == Instruction::ExtractElement) {
2323 if (Elts.size() != 2)
2324 return Error(ID.Loc, "expected two operands to extractelement");
2325 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2326 return Error(ID.Loc, "invalid extractelement operands");
2327 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2329 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2330 if (Elts.size() != 3)
2331 return Error(ID.Loc, "expected three operands to insertelement");
2332 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2333 return Error(ID.Loc, "invalid insertelement operands");
2335 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2338 ID.Kind = ValID::t_Constant;
2347 /// ParseGlobalValue - Parse a global value with the specified type.
2348 bool LLParser::ParseGlobalValue(const Type *Ty, Constant *&V) {
2351 return ParseValID(ID) ||
2352 ConvertGlobalValIDToValue(Ty, ID, V);
2355 /// ConvertGlobalValIDToValue - Apply a type to a ValID to get a fully resolved
2357 bool LLParser::ConvertGlobalValIDToValue(const Type *Ty, ValID &ID,
2359 if (isa<FunctionType>(Ty))
2360 return Error(ID.Loc, "functions are not values, refer to them as pointers");
2363 default: llvm_unreachable("Unknown ValID!");
2364 case ValID::t_MDNode:
2365 case ValID::t_MDString:
2366 return Error(ID.Loc, "invalid use of metadata");
2367 case ValID::t_LocalID:
2368 case ValID::t_LocalName:
2369 return Error(ID.Loc, "invalid use of function-local name");
2370 case ValID::t_InlineAsm:
2371 return Error(ID.Loc, "inline asm can only be an operand of call/invoke");
2372 case ValID::t_GlobalName:
2373 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
2375 case ValID::t_GlobalID:
2376 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
2378 case ValID::t_APSInt:
2379 if (!isa<IntegerType>(Ty))
2380 return Error(ID.Loc, "integer constant must have integer type");
2381 ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
2382 V = ConstantInt::get(Context, ID.APSIntVal);
2384 case ValID::t_APFloat:
2385 if (!Ty->isFloatingPoint() ||
2386 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
2387 return Error(ID.Loc, "floating point constant invalid for type");
2389 // The lexer has no type info, so builds all float and double FP constants
2390 // as double. Fix this here. Long double does not need this.
2391 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble &&
2394 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
2397 V = ConstantFP::get(Context, ID.APFloatVal);
2399 if (V->getType() != Ty)
2400 return Error(ID.Loc, "floating point constant does not have type '" +
2401 Ty->getDescription() + "'");
2405 if (!isa<PointerType>(Ty))
2406 return Error(ID.Loc, "null must be a pointer type");
2407 V = ConstantPointerNull::get(cast<PointerType>(Ty));
2409 case ValID::t_Undef:
2410 // FIXME: LabelTy should not be a first-class type.
2411 if ((!Ty->isFirstClassType() || Ty->isLabelTy()) &&
2412 !isa<OpaqueType>(Ty))
2413 return Error(ID.Loc, "invalid type for undef constant");
2414 V = UndefValue::get(Ty);
2416 case ValID::t_EmptyArray:
2417 if (!isa<ArrayType>(Ty) || cast<ArrayType>(Ty)->getNumElements() != 0)
2418 return Error(ID.Loc, "invalid empty array initializer");
2419 V = UndefValue::get(Ty);
2422 // FIXME: LabelTy should not be a first-class type.
2423 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2424 return Error(ID.Loc, "invalid type for null constant");
2425 V = Constant::getNullValue(Ty);
2427 case ValID::t_Constant:
2428 if (ID.ConstantVal->getType() != Ty)
2429 return Error(ID.Loc, "constant expression type mismatch");
2435 /// ConvertGlobalOrMetadataValIDToValue - Apply a type to a ValID to get a fully
2436 /// resolved constant or metadata value.
2437 bool LLParser::ConvertGlobalOrMetadataValIDToValue(const Type *Ty, ValID &ID,
2440 case ValID::t_MDNode:
2441 if (!Ty->isMetadataTy())
2442 return Error(ID.Loc, "metadata value must have metadata type");
2445 case ValID::t_MDString:
2446 if (!Ty->isMetadataTy())
2447 return Error(ID.Loc, "metadata value must have metadata type");
2452 if (ConvertGlobalValIDToValue(Ty, ID, C)) return true;
2459 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2460 PATypeHolder Type(Type::getVoidTy(Context));
2461 return ParseType(Type) ||
2462 ParseGlobalValue(Type, V);
2465 /// ParseGlobalValueVector
2467 /// ::= TypeAndValue (',' TypeAndValue)*
2468 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts) {
2470 if (Lex.getKind() == lltok::rbrace ||
2471 Lex.getKind() == lltok::rsquare ||
2472 Lex.getKind() == lltok::greater ||
2473 Lex.getKind() == lltok::rparen)
2477 if (ParseGlobalTypeAndValue(C)) return true;
2480 while (EatIfPresent(lltok::comma)) {
2481 if (ParseGlobalTypeAndValue(C)) return true;
2489 //===----------------------------------------------------------------------===//
2490 // Function Parsing.
2491 //===----------------------------------------------------------------------===//
2493 bool LLParser::ConvertValIDToValue(const Type *Ty, ValID &ID, Value *&V,
2494 PerFunctionState &PFS) {
2496 case ValID::t_LocalID: V = PFS.GetVal(ID.UIntVal, Ty, ID.Loc); break;
2497 case ValID::t_LocalName: V = PFS.GetVal(ID.StrVal, Ty, ID.Loc); break;
2498 case ValID::t_InlineAsm: {
2499 const PointerType *PTy = dyn_cast<PointerType>(Ty);
2500 const FunctionType *FTy =
2501 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
2502 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
2503 return Error(ID.Loc, "invalid type for inline asm constraint string");
2504 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1, ID.UIntVal>>1);
2508 return ConvertGlobalOrMetadataValIDToValue(Ty, ID, V);
2514 bool LLParser::ParseValue(const Type *Ty, Value *&V, PerFunctionState &PFS) {
2517 return ParseValID(ID) ||
2518 ConvertValIDToValue(Ty, ID, V, PFS);
2521 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState &PFS) {
2522 PATypeHolder T(Type::getVoidTy(Context));
2523 return ParseType(T) ||
2524 ParseValue(T, V, PFS);
2527 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
2528 PerFunctionState &PFS) {
2531 if (ParseTypeAndValue(V, PFS)) return true;
2532 if (!isa<BasicBlock>(V))
2533 return Error(Loc, "expected a basic block");
2534 BB = cast<BasicBlock>(V);
2540 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
2541 /// Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
2542 /// OptionalAlign OptGC
2543 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
2544 // Parse the linkage.
2545 LocTy LinkageLoc = Lex.getLoc();
2548 unsigned Visibility, RetAttrs;
2550 PATypeHolder RetType(Type::getVoidTy(Context));
2551 LocTy RetTypeLoc = Lex.getLoc();
2552 if (ParseOptionalLinkage(Linkage) ||
2553 ParseOptionalVisibility(Visibility) ||
2554 ParseOptionalCallingConv(CC) ||
2555 ParseOptionalAttrs(RetAttrs, 1) ||
2556 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
2559 // Verify that the linkage is ok.
2560 switch ((GlobalValue::LinkageTypes)Linkage) {
2561 case GlobalValue::ExternalLinkage:
2562 break; // always ok.
2563 case GlobalValue::DLLImportLinkage:
2564 case GlobalValue::ExternalWeakLinkage:
2566 return Error(LinkageLoc, "invalid linkage for function definition");
2568 case GlobalValue::PrivateLinkage:
2569 case GlobalValue::LinkerPrivateLinkage:
2570 case GlobalValue::InternalLinkage:
2571 case GlobalValue::AvailableExternallyLinkage:
2572 case GlobalValue::LinkOnceAnyLinkage:
2573 case GlobalValue::LinkOnceODRLinkage:
2574 case GlobalValue::WeakAnyLinkage:
2575 case GlobalValue::WeakODRLinkage:
2576 case GlobalValue::DLLExportLinkage:
2578 return Error(LinkageLoc, "invalid linkage for function declaration");
2580 case GlobalValue::AppendingLinkage:
2581 case GlobalValue::GhostLinkage:
2582 case GlobalValue::CommonLinkage:
2583 return Error(LinkageLoc, "invalid function linkage type");
2586 if (!FunctionType::isValidReturnType(RetType) ||
2587 isa<OpaqueType>(RetType))
2588 return Error(RetTypeLoc, "invalid function return type");
2590 LocTy NameLoc = Lex.getLoc();
2592 std::string FunctionName;
2593 if (Lex.getKind() == lltok::GlobalVar) {
2594 FunctionName = Lex.getStrVal();
2595 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
2596 unsigned NameID = Lex.getUIntVal();
2598 if (NameID != NumberedVals.size())
2599 return TokError("function expected to be numbered '%" +
2600 utostr(NumberedVals.size()) + "'");
2602 return TokError("expected function name");
2607 if (Lex.getKind() != lltok::lparen)
2608 return TokError("expected '(' in function argument list");
2610 std::vector<ArgInfo> ArgList;
2613 std::string Section;
2617 if (ParseArgumentList(ArgList, isVarArg, false) ||
2618 ParseOptionalAttrs(FuncAttrs, 2) ||
2619 (EatIfPresent(lltok::kw_section) &&
2620 ParseStringConstant(Section)) ||
2621 ParseOptionalAlignment(Alignment) ||
2622 (EatIfPresent(lltok::kw_gc) &&
2623 ParseStringConstant(GC)))
2626 // If the alignment was parsed as an attribute, move to the alignment field.
2627 if (FuncAttrs & Attribute::Alignment) {
2628 Alignment = Attribute::getAlignmentFromAttrs(FuncAttrs);
2629 FuncAttrs &= ~Attribute::Alignment;
2632 // Okay, if we got here, the function is syntactically valid. Convert types
2633 // and do semantic checks.
2634 std::vector<const Type*> ParamTypeList;
2635 SmallVector<AttributeWithIndex, 8> Attrs;
2636 // FIXME : In 3.0, stop accepting zext, sext and inreg as optional function
2638 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
2639 if (FuncAttrs & ObsoleteFuncAttrs) {
2640 RetAttrs |= FuncAttrs & ObsoleteFuncAttrs;
2641 FuncAttrs &= ~ObsoleteFuncAttrs;
2644 if (RetAttrs != Attribute::None)
2645 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
2647 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2648 ParamTypeList.push_back(ArgList[i].Type);
2649 if (ArgList[i].Attrs != Attribute::None)
2650 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
2653 if (FuncAttrs != Attribute::None)
2654 Attrs.push_back(AttributeWithIndex::get(~0, FuncAttrs));
2656 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
2658 if (PAL.paramHasAttr(1, Attribute::StructRet) &&
2659 RetType != Type::getVoidTy(Context))
2660 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
2662 const FunctionType *FT =
2663 FunctionType::get(RetType, ParamTypeList, isVarArg);
2664 const PointerType *PFT = PointerType::getUnqual(FT);
2667 if (!FunctionName.empty()) {
2668 // If this was a definition of a forward reference, remove the definition
2669 // from the forward reference table and fill in the forward ref.
2670 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
2671 ForwardRefVals.find(FunctionName);
2672 if (FRVI != ForwardRefVals.end()) {
2673 Fn = M->getFunction(FunctionName);
2674 ForwardRefVals.erase(FRVI);
2675 } else if ((Fn = M->getFunction(FunctionName))) {
2676 // If this function already exists in the symbol table, then it is
2677 // multiply defined. We accept a few cases for old backwards compat.
2678 // FIXME: Remove this stuff for LLVM 3.0.
2679 if (Fn->getType() != PFT || Fn->getAttributes() != PAL ||
2680 (!Fn->isDeclaration() && isDefine)) {
2681 // If the redefinition has different type or different attributes,
2682 // reject it. If both have bodies, reject it.
2683 return Error(NameLoc, "invalid redefinition of function '" +
2684 FunctionName + "'");
2685 } else if (Fn->isDeclaration()) {
2686 // Make sure to strip off any argument names so we can't get conflicts.
2687 for (Function::arg_iterator AI = Fn->arg_begin(), AE = Fn->arg_end();
2691 } else if (M->getNamedValue(FunctionName)) {
2692 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
2696 // If this is a definition of a forward referenced function, make sure the
2698 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
2699 = ForwardRefValIDs.find(NumberedVals.size());
2700 if (I != ForwardRefValIDs.end()) {
2701 Fn = cast<Function>(I->second.first);
2702 if (Fn->getType() != PFT)
2703 return Error(NameLoc, "type of definition and forward reference of '@" +
2704 utostr(NumberedVals.size()) +"' disagree");
2705 ForwardRefValIDs.erase(I);
2710 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
2711 else // Move the forward-reference to the correct spot in the module.
2712 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
2714 if (FunctionName.empty())
2715 NumberedVals.push_back(Fn);
2717 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
2718 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
2719 Fn->setCallingConv(CC);
2720 Fn->setAttributes(PAL);
2721 Fn->setAlignment(Alignment);
2722 Fn->setSection(Section);
2723 if (!GC.empty()) Fn->setGC(GC.c_str());
2725 // Add all of the arguments we parsed to the function.
2726 Function::arg_iterator ArgIt = Fn->arg_begin();
2727 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
2728 // If we run out of arguments in the Function prototype, exit early.
2729 // FIXME: REMOVE THIS IN LLVM 3.0, this is just for the mismatch case above.
2730 if (ArgIt == Fn->arg_end()) break;
2732 // If the argument has a name, insert it into the argument symbol table.
2733 if (ArgList[i].Name.empty()) continue;
2735 // Set the name, if it conflicted, it will be auto-renamed.
2736 ArgIt->setName(ArgList[i].Name);
2738 if (ArgIt->getNameStr() != ArgList[i].Name)
2739 return Error(ArgList[i].Loc, "redefinition of argument '%" +
2740 ArgList[i].Name + "'");
2747 /// ParseFunctionBody
2748 /// ::= '{' BasicBlock+ '}'
2749 /// ::= 'begin' BasicBlock+ 'end' // FIXME: remove in LLVM 3.0
2751 bool LLParser::ParseFunctionBody(Function &Fn) {
2752 if (Lex.getKind() != lltok::lbrace && Lex.getKind() != lltok::kw_begin)
2753 return TokError("expected '{' in function body");
2754 Lex.Lex(); // eat the {.
2756 int FunctionNumber = -1;
2757 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
2759 PerFunctionState PFS(*this, Fn, FunctionNumber);
2761 while (Lex.getKind() != lltok::rbrace && Lex.getKind() != lltok::kw_end)
2762 if (ParseBasicBlock(PFS)) return true;
2767 // Verify function is ok.
2768 return PFS.FinishFunction();
2772 /// ::= LabelStr? Instruction*
2773 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
2774 // If this basic block starts out with a name, remember it.
2776 LocTy NameLoc = Lex.getLoc();
2777 if (Lex.getKind() == lltok::LabelStr) {
2778 Name = Lex.getStrVal();
2782 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
2783 if (BB == 0) return true;
2785 std::string NameStr;
2787 // Parse the instructions in this block until we get a terminator.
2790 // This instruction may have three possibilities for a name: a) none
2791 // specified, b) name specified "%foo =", c) number specified: "%4 =".
2792 LocTy NameLoc = Lex.getLoc();
2796 if (Lex.getKind() == lltok::LocalVarID) {
2797 NameID = Lex.getUIntVal();
2799 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
2801 } else if (Lex.getKind() == lltok::LocalVar ||
2802 // FIXME: REMOVE IN LLVM 3.0
2803 Lex.getKind() == lltok::StringConstant) {
2804 NameStr = Lex.getStrVal();
2806 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
2810 switch (ParseInstruction(Inst, BB, PFS)) {
2811 default: assert(0 && "Unknown ParseInstruction result!");
2812 case InstError: return true;
2814 // With a normal result, we check to see if the instruction is followed by
2815 // a comma and metadata.
2816 if (EatIfPresent(lltok::comma))
2817 if (ParseInstructionMetadata())
2820 case InstExtraComma:
2821 // If the instruction parser ate an extra comma at the end of it, it
2822 // *must* be followed by metadata.
2823 if (ParseInstructionMetadata())
2828 // Set metadata attached with this instruction.
2829 for (SmallVector<std::pair<unsigned, MDNode *>, 2>::iterator
2830 MDI = MDsOnInst.begin(), MDE = MDsOnInst.end(); MDI != MDE; ++MDI)
2831 Inst->setMetadata(MDI->first, MDI->second);
2834 BB->getInstList().push_back(Inst);
2836 // Set the name on the instruction.
2837 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
2838 } while (!isa<TerminatorInst>(Inst));
2843 //===----------------------------------------------------------------------===//
2844 // Instruction Parsing.
2845 //===----------------------------------------------------------------------===//
2847 /// ParseInstruction - Parse one of the many different instructions.
2849 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
2850 PerFunctionState &PFS) {
2851 lltok::Kind Token = Lex.getKind();
2852 if (Token == lltok::Eof)
2853 return TokError("found end of file when expecting more instructions");
2854 LocTy Loc = Lex.getLoc();
2855 unsigned KeywordVal = Lex.getUIntVal();
2856 Lex.Lex(); // Eat the keyword.
2859 default: return Error(Loc, "expected instruction opcode");
2860 // Terminator Instructions.
2861 case lltok::kw_unwind: Inst = new UnwindInst(Context); return false;
2862 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
2863 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
2864 case lltok::kw_br: return ParseBr(Inst, PFS);
2865 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
2866 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
2867 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
2868 // Binary Operators.
2871 case lltok::kw_mul: {
2874 LocTy ModifierLoc = Lex.getLoc();
2875 if (EatIfPresent(lltok::kw_nuw))
2877 if (EatIfPresent(lltok::kw_nsw)) {
2879 if (EatIfPresent(lltok::kw_nuw))
2882 // API compatibility: Accept either integer or floating-point types.
2883 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 0);
2885 if (!Inst->getType()->isIntOrIntVector()) {
2887 return Error(ModifierLoc, "nuw only applies to integer operations");
2889 return Error(ModifierLoc, "nsw only applies to integer operations");
2892 cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
2894 cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
2898 case lltok::kw_fadd:
2899 case lltok::kw_fsub:
2900 case lltok::kw_fmul: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
2902 case lltok::kw_sdiv: {
2904 if (EatIfPresent(lltok::kw_exact))
2906 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 1);
2909 cast<BinaryOperator>(Inst)->setIsExact(true);
2913 case lltok::kw_udiv:
2914 case lltok::kw_urem:
2915 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
2916 case lltok::kw_fdiv:
2917 case lltok::kw_frem: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
2919 case lltok::kw_lshr:
2920 case lltok::kw_ashr:
2923 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
2924 case lltok::kw_icmp:
2925 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
2927 case lltok::kw_trunc:
2928 case lltok::kw_zext:
2929 case lltok::kw_sext:
2930 case lltok::kw_fptrunc:
2931 case lltok::kw_fpext:
2932 case lltok::kw_bitcast:
2933 case lltok::kw_uitofp:
2934 case lltok::kw_sitofp:
2935 case lltok::kw_fptoui:
2936 case lltok::kw_fptosi:
2937 case lltok::kw_inttoptr:
2938 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
2940 case lltok::kw_select: return ParseSelect(Inst, PFS);
2941 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
2942 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
2943 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
2944 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
2945 case lltok::kw_phi: return ParsePHI(Inst, PFS);
2946 case lltok::kw_call: return ParseCall(Inst, PFS, false);
2947 case lltok::kw_tail: return ParseCall(Inst, PFS, true);
2949 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
2950 case lltok::kw_malloc: return ParseAlloc(Inst, PFS, BB, false);
2951 case lltok::kw_free: return ParseFree(Inst, PFS, BB);
2952 case lltok::kw_load: return ParseLoad(Inst, PFS, false);
2953 case lltok::kw_store: return ParseStore(Inst, PFS, false);
2954 case lltok::kw_volatile:
2955 if (EatIfPresent(lltok::kw_load))
2956 return ParseLoad(Inst, PFS, true);
2957 else if (EatIfPresent(lltok::kw_store))
2958 return ParseStore(Inst, PFS, true);
2960 return TokError("expected 'load' or 'store'");
2961 case lltok::kw_getresult: return ParseGetResult(Inst, PFS);
2962 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
2963 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
2964 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
2968 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
2969 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
2970 if (Opc == Instruction::FCmp) {
2971 switch (Lex.getKind()) {
2972 default: TokError("expected fcmp predicate (e.g. 'oeq')");
2973 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
2974 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
2975 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
2976 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
2977 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
2978 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
2979 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
2980 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
2981 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
2982 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
2983 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
2984 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
2985 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
2986 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
2987 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
2988 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
2991 switch (Lex.getKind()) {
2992 default: TokError("expected icmp predicate (e.g. 'eq')");
2993 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
2994 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
2995 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
2996 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
2997 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
2998 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
2999 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
3000 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
3001 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
3002 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3009 //===----------------------------------------------------------------------===//
3010 // Terminator Instructions.
3011 //===----------------------------------------------------------------------===//
3013 /// ParseRet - Parse a return instruction.
3014 /// ::= 'ret' void (',' !dbg, !1)*
3015 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
3016 /// ::= 'ret' TypeAndValue (',' TypeAndValue)+ (',' !dbg, !1)*
3017 /// [[obsolete: LLVM 3.0]]
3018 int LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3019 PerFunctionState &PFS) {
3020 PATypeHolder Ty(Type::getVoidTy(Context));
3021 if (ParseType(Ty, true /*void allowed*/)) return true;
3023 if (Ty->isVoidTy()) {
3024 Inst = ReturnInst::Create(Context);
3029 if (ParseValue(Ty, RV, PFS)) return true;
3031 bool ExtraComma = false;
3032 if (EatIfPresent(lltok::comma)) {
3033 // Parse optional custom metadata, e.g. !dbg
3034 if (Lex.getKind() == lltok::MetadataVar) {
3037 // The normal case is one return value.
3038 // FIXME: LLVM 3.0 remove MRV support for 'ret i32 1, i32 2', requiring
3039 // use 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::MetadataVar)
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);
3062 return ExtraComma ? InstExtraComma : InstNormal;
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 int 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 bool AteExtraComma = false;
3499 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
3501 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
3503 if (!EatIfPresent(lltok::comma))
3506 if (Lex.getKind() == lltok::MetadataVar) {
3507 AteExtraComma = true;
3511 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3512 ParseValue(Ty, Op0, PFS) ||
3513 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3514 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3515 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
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);
3527 return AteExtraComma ? InstExtraComma : InstNormal;
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::MetadataVar) {
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 int 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 bool AteExtraComma = false;
3764 while (EatIfPresent(lltok::comma)) {
3765 if (Lex.getKind() == lltok::MetadataVar) {
3766 AteExtraComma = true;
3769 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
3770 if (!isa<IntegerType>(Val->getType()))
3771 return Error(EltLoc, "getelementptr index must be an integer");
3772 Indices.push_back(Val);
3775 if (!GetElementPtrInst::getIndexedType(Ptr->getType(),
3776 Indices.begin(), Indices.end()))
3777 return Error(Loc, "invalid getelementptr indices");
3778 Inst = GetElementPtrInst::Create(Ptr, Indices.begin(), Indices.end());
3780 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
3781 return AteExtraComma ? InstExtraComma : InstNormal;
3784 /// ParseExtractValue
3785 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
3786 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
3787 Value *Val; LocTy Loc;
3788 SmallVector<unsigned, 4> Indices;
3790 if (ParseTypeAndValue(Val, Loc, PFS) ||
3791 ParseIndexList(Indices, AteExtraComma))
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());
3801 return AteExtraComma ? InstExtraComma : InstNormal;
3804 /// ParseInsertValue
3805 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
3806 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
3807 Value *Val0, *Val1; LocTy Loc0, Loc1;
3808 SmallVector<unsigned, 4> Indices;
3810 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
3811 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
3812 ParseTypeAndValue(Val1, Loc1, PFS) ||
3813 ParseIndexList(Indices, AteExtraComma))
3816 if (!isa<StructType>(Val0->getType()) && !isa<ArrayType>(Val0->getType()))
3817 return Error(Loc0, "extractvalue operand must be array or struct");
3819 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
3821 return Error(Loc0, "invalid indices for insertvalue");
3822 Inst = InsertValueInst::Create(Val0, Val1, Indices.begin(), Indices.end());
3823 return AteExtraComma ? InstExtraComma : InstNormal;
3826 //===----------------------------------------------------------------------===//
3827 // Embedded metadata.
3828 //===----------------------------------------------------------------------===//
3830 /// ParseMDNodeVector
3831 /// ::= Element (',' Element)*
3833 /// ::= 'null' | TypeAndValue
3834 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts) {
3836 // Null is a special case since it is typeless.
3837 if (EatIfPresent(lltok::kw_null)) {
3843 PATypeHolder Ty(Type::getVoidTy(Context));
3845 if (ParseType(Ty) || ParseValID(ID) ||
3846 ConvertGlobalOrMetadataValIDToValue(Ty, ID, V))
3850 } while (EatIfPresent(lltok::comma));