1 //===-- LLParser.cpp - Parser Class ---------------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines the parser class for .ll files.
12 //===----------------------------------------------------------------------===//
15 #include "llvm/AutoUpgrade.h"
16 #include "llvm/CallingConv.h"
17 #include "llvm/Constants.h"
18 #include "llvm/DerivedTypes.h"
19 #include "llvm/InlineAsm.h"
20 #include "llvm/Instructions.h"
21 #include "llvm/Module.h"
22 #include "llvm/Operator.h"
23 #include "llvm/ValueSymbolTable.h"
24 #include "llvm/ADT/SmallPtrSet.h"
25 #include "llvm/ADT/StringExtras.h"
26 #include "llvm/Support/ErrorHandling.h"
27 #include "llvm/Support/raw_ostream.h"
30 /// Run: module ::= toplevelentity*
31 bool LLParser::Run() {
35 return ParseTopLevelEntities() ||
36 ValidateEndOfModule();
39 /// ValidateEndOfModule - Do final validity and sanity checks at the end of the
41 bool LLParser::ValidateEndOfModule() {
42 // Update auto-upgraded malloc calls to "malloc".
43 // FIXME: Remove in LLVM 3.0.
45 MallocF->setName("malloc");
46 // If setName() does not set the name to "malloc", then there is already a
47 // declaration of "malloc". In that case, iterate over all calls to MallocF
48 // and get them to call the declared "malloc" instead.
49 if (MallocF->getName() != "malloc") {
50 Constant *RealMallocF = M->getFunction("malloc");
51 if (RealMallocF->getType() != MallocF->getType())
52 RealMallocF = ConstantExpr::getBitCast(RealMallocF, MallocF->getType());
53 MallocF->replaceAllUsesWith(RealMallocF);
54 MallocF->eraseFromParent();
60 // If there are entries in ForwardRefBlockAddresses at this point, they are
61 // references after the function was defined. Resolve those now.
62 while (!ForwardRefBlockAddresses.empty()) {
63 // Okay, we are referencing an already-parsed function, resolve them now.
65 const ValID &Fn = ForwardRefBlockAddresses.begin()->first;
66 if (Fn.Kind == ValID::t_GlobalName)
67 TheFn = M->getFunction(Fn.StrVal);
68 else if (Fn.UIntVal < NumberedVals.size())
69 TheFn = dyn_cast<Function>(NumberedVals[Fn.UIntVal]);
72 return Error(Fn.Loc, "unknown function referenced by blockaddress");
74 // Resolve all these references.
75 if (ResolveForwardRefBlockAddresses(TheFn,
76 ForwardRefBlockAddresses.begin()->second,
80 ForwardRefBlockAddresses.erase(ForwardRefBlockAddresses.begin());
84 if (!ForwardRefTypes.empty())
85 return Error(ForwardRefTypes.begin()->second.second,
86 "use of undefined type named '" +
87 ForwardRefTypes.begin()->first + "'");
88 if (!ForwardRefTypeIDs.empty())
89 return Error(ForwardRefTypeIDs.begin()->second.second,
90 "use of undefined type '%" +
91 utostr(ForwardRefTypeIDs.begin()->first) + "'");
93 if (!ForwardRefVals.empty())
94 return Error(ForwardRefVals.begin()->second.second,
95 "use of undefined value '@" + ForwardRefVals.begin()->first +
98 if (!ForwardRefValIDs.empty())
99 return Error(ForwardRefValIDs.begin()->second.second,
100 "use of undefined value '@" +
101 utostr(ForwardRefValIDs.begin()->first) + "'");
103 if (!ForwardRefMDNodes.empty())
104 return Error(ForwardRefMDNodes.begin()->second.second,
105 "use of undefined metadata '!" +
106 utostr(ForwardRefMDNodes.begin()->first) + "'");
109 // Look for intrinsic functions and CallInst that need to be upgraded
110 for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; )
111 UpgradeCallsToIntrinsic(FI++); // must be post-increment, as we remove
113 // Check debug info intrinsics.
114 CheckDebugInfoIntrinsics(M);
118 bool LLParser::ResolveForwardRefBlockAddresses(Function *TheFn,
119 std::vector<std::pair<ValID, GlobalValue*> > &Refs,
120 PerFunctionState *PFS) {
121 // Loop over all the references, resolving them.
122 for (unsigned i = 0, e = Refs.size(); i != e; ++i) {
125 if (Refs[i].first.Kind == ValID::t_LocalName)
126 Res = PFS->GetBB(Refs[i].first.StrVal, Refs[i].first.Loc);
128 Res = PFS->GetBB(Refs[i].first.UIntVal, Refs[i].first.Loc);
129 } else if (Refs[i].first.Kind == ValID::t_LocalID) {
130 return Error(Refs[i].first.Loc,
131 "cannot take address of numeric label after the function is defined");
133 Res = dyn_cast_or_null<BasicBlock>(
134 TheFn->getValueSymbolTable().lookup(Refs[i].first.StrVal));
138 return Error(Refs[i].first.Loc,
139 "referenced value is not a basic block");
141 // Get the BlockAddress for this and update references to use it.
142 BlockAddress *BA = BlockAddress::get(TheFn, Res);
143 Refs[i].second->replaceAllUsesWith(BA);
144 Refs[i].second->eraseFromParent();
150 //===----------------------------------------------------------------------===//
151 // Top-Level Entities
152 //===----------------------------------------------------------------------===//
154 bool LLParser::ParseTopLevelEntities() {
156 switch (Lex.getKind()) {
157 default: return TokError("expected top-level entity");
158 case lltok::Eof: return false;
159 //case lltok::kw_define:
160 case lltok::kw_declare: if (ParseDeclare()) return true; break;
161 case lltok::kw_define: if (ParseDefine()) return true; break;
162 case lltok::kw_module: if (ParseModuleAsm()) return true; break;
163 case lltok::kw_target: if (ParseTargetDefinition()) return true; break;
164 case lltok::kw_deplibs: if (ParseDepLibs()) return true; break;
165 case lltok::kw_type: if (ParseUnnamedType()) return true; break;
166 case lltok::LocalVarID: if (ParseUnnamedType()) return true; break;
167 case lltok::StringConstant: // FIXME: REMOVE IN LLVM 3.0
168 case lltok::LocalVar: if (ParseNamedType()) return true; break;
169 case lltok::GlobalID: if (ParseUnnamedGlobal()) return true; break;
170 case lltok::GlobalVar: if (ParseNamedGlobal()) return true; break;
171 case lltok::exclaim: if (ParseStandaloneMetadata()) return true; break;
172 case lltok::MetadataVar: if (ParseNamedMetadata()) return true; break;
174 // The Global variable production with no name can have many different
175 // optional leading prefixes, the production is:
176 // GlobalVar ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
177 // OptionalAddrSpace ('constant'|'global') ...
178 case lltok::kw_private : // OptionalLinkage
179 case lltok::kw_linker_private: // OptionalLinkage
180 case lltok::kw_internal: // OptionalLinkage
181 case lltok::kw_weak: // OptionalLinkage
182 case lltok::kw_weak_odr: // OptionalLinkage
183 case lltok::kw_linkonce: // OptionalLinkage
184 case lltok::kw_linkonce_odr: // OptionalLinkage
185 case lltok::kw_appending: // OptionalLinkage
186 case lltok::kw_dllexport: // OptionalLinkage
187 case lltok::kw_common: // OptionalLinkage
188 case lltok::kw_dllimport: // OptionalLinkage
189 case lltok::kw_extern_weak: // OptionalLinkage
190 case lltok::kw_external: { // OptionalLinkage
191 unsigned Linkage, Visibility;
192 if (ParseOptionalLinkage(Linkage) ||
193 ParseOptionalVisibility(Visibility) ||
194 ParseGlobal("", SMLoc(), Linkage, true, Visibility))
198 case lltok::kw_default: // OptionalVisibility
199 case lltok::kw_hidden: // OptionalVisibility
200 case lltok::kw_protected: { // OptionalVisibility
202 if (ParseOptionalVisibility(Visibility) ||
203 ParseGlobal("", SMLoc(), 0, false, Visibility))
208 case lltok::kw_thread_local: // OptionalThreadLocal
209 case lltok::kw_addrspace: // OptionalAddrSpace
210 case lltok::kw_constant: // GlobalType
211 case lltok::kw_global: // GlobalType
212 if (ParseGlobal("", SMLoc(), 0, false, 0)) return true;
220 /// ::= 'module' 'asm' STRINGCONSTANT
221 bool LLParser::ParseModuleAsm() {
222 assert(Lex.getKind() == lltok::kw_module);
226 if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
227 ParseStringConstant(AsmStr)) return true;
229 const std::string &AsmSoFar = M->getModuleInlineAsm();
230 if (AsmSoFar.empty())
231 M->setModuleInlineAsm(AsmStr);
233 M->setModuleInlineAsm(AsmSoFar+"\n"+AsmStr);
238 /// ::= 'target' 'triple' '=' STRINGCONSTANT
239 /// ::= 'target' 'datalayout' '=' STRINGCONSTANT
240 bool LLParser::ParseTargetDefinition() {
241 assert(Lex.getKind() == lltok::kw_target);
244 default: return TokError("unknown target property");
245 case lltok::kw_triple:
247 if (ParseToken(lltok::equal, "expected '=' after target triple") ||
248 ParseStringConstant(Str))
250 M->setTargetTriple(Str);
252 case lltok::kw_datalayout:
254 if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
255 ParseStringConstant(Str))
257 M->setDataLayout(Str);
263 /// ::= 'deplibs' '=' '[' ']'
264 /// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
265 bool LLParser::ParseDepLibs() {
266 assert(Lex.getKind() == lltok::kw_deplibs);
268 if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
269 ParseToken(lltok::lsquare, "expected '=' after deplibs"))
272 if (EatIfPresent(lltok::rsquare))
276 if (ParseStringConstant(Str)) return true;
279 while (EatIfPresent(lltok::comma)) {
280 if (ParseStringConstant(Str)) return true;
284 return ParseToken(lltok::rsquare, "expected ']' at end of list");
287 /// ParseUnnamedType:
289 /// ::= LocalVarID '=' 'type' type
290 bool LLParser::ParseUnnamedType() {
291 unsigned TypeID = NumberedTypes.size();
293 // Handle the LocalVarID form.
294 if (Lex.getKind() == lltok::LocalVarID) {
295 if (Lex.getUIntVal() != TypeID)
296 return Error(Lex.getLoc(), "type expected to be numbered '%" +
297 utostr(TypeID) + "'");
298 Lex.Lex(); // eat LocalVarID;
300 if (ParseToken(lltok::equal, "expected '=' after name"))
304 assert(Lex.getKind() == lltok::kw_type);
305 LocTy TypeLoc = Lex.getLoc();
306 Lex.Lex(); // eat kw_type
308 PATypeHolder Ty(Type::getVoidTy(Context));
309 if (ParseType(Ty)) return true;
311 // See if this type was previously referenced.
312 std::map<unsigned, std::pair<PATypeHolder, LocTy> >::iterator
313 FI = ForwardRefTypeIDs.find(TypeID);
314 if (FI != ForwardRefTypeIDs.end()) {
315 if (FI->second.first.get() == Ty)
316 return Error(TypeLoc, "self referential type is invalid");
318 cast<DerivedType>(FI->second.first.get())->refineAbstractTypeTo(Ty);
319 Ty = FI->second.first.get();
320 ForwardRefTypeIDs.erase(FI);
323 NumberedTypes.push_back(Ty);
329 /// ::= LocalVar '=' 'type' type
330 bool LLParser::ParseNamedType() {
331 std::string Name = Lex.getStrVal();
332 LocTy NameLoc = Lex.getLoc();
333 Lex.Lex(); // eat LocalVar.
335 PATypeHolder Ty(Type::getVoidTy(Context));
337 if (ParseToken(lltok::equal, "expected '=' after name") ||
338 ParseToken(lltok::kw_type, "expected 'type' after name") ||
342 // Set the type name, checking for conflicts as we do so.
343 bool AlreadyExists = M->addTypeName(Name, Ty);
344 if (!AlreadyExists) return false;
346 // See if this type is a forward reference. We need to eagerly resolve
347 // types to allow recursive type redefinitions below.
348 std::map<std::string, std::pair<PATypeHolder, LocTy> >::iterator
349 FI = ForwardRefTypes.find(Name);
350 if (FI != ForwardRefTypes.end()) {
351 if (FI->second.first.get() == Ty)
352 return Error(NameLoc, "self referential type is invalid");
354 cast<DerivedType>(FI->second.first.get())->refineAbstractTypeTo(Ty);
355 Ty = FI->second.first.get();
356 ForwardRefTypes.erase(FI);
359 // Inserting a name that is already defined, get the existing name.
360 const Type *Existing = M->getTypeByName(Name);
361 assert(Existing && "Conflict but no matching type?!");
363 // Otherwise, this is an attempt to redefine a type. That's okay if
364 // the redefinition is identical to the original.
365 // FIXME: REMOVE REDEFINITIONS IN LLVM 3.0
366 if (Existing == Ty) return false;
368 // Any other kind of (non-equivalent) redefinition is an error.
369 return Error(NameLoc, "redefinition of type named '" + Name + "' of type '" +
370 Ty->getDescription() + "'");
375 /// ::= 'declare' FunctionHeader
376 bool LLParser::ParseDeclare() {
377 assert(Lex.getKind() == lltok::kw_declare);
381 return ParseFunctionHeader(F, false);
385 /// ::= 'define' FunctionHeader '{' ...
386 bool LLParser::ParseDefine() {
387 assert(Lex.getKind() == lltok::kw_define);
391 return ParseFunctionHeader(F, true) ||
392 ParseFunctionBody(*F);
398 bool LLParser::ParseGlobalType(bool &IsConstant) {
399 if (Lex.getKind() == lltok::kw_constant)
401 else if (Lex.getKind() == lltok::kw_global)
405 return TokError("expected 'global' or 'constant'");
411 /// ParseUnnamedGlobal:
412 /// OptionalVisibility ALIAS ...
413 /// OptionalLinkage OptionalVisibility ... -> global variable
414 /// GlobalID '=' OptionalVisibility ALIAS ...
415 /// GlobalID '=' OptionalLinkage OptionalVisibility ... -> global variable
416 bool LLParser::ParseUnnamedGlobal() {
417 unsigned VarID = NumberedVals.size();
419 LocTy NameLoc = Lex.getLoc();
421 // Handle the GlobalID form.
422 if (Lex.getKind() == lltok::GlobalID) {
423 if (Lex.getUIntVal() != VarID)
424 return Error(Lex.getLoc(), "variable expected to be numbered '%" +
425 utostr(VarID) + "'");
426 Lex.Lex(); // eat GlobalID;
428 if (ParseToken(lltok::equal, "expected '=' after name"))
433 unsigned Linkage, Visibility;
434 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
435 ParseOptionalVisibility(Visibility))
438 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
439 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
440 return ParseAlias(Name, NameLoc, Visibility);
443 /// ParseNamedGlobal:
444 /// GlobalVar '=' OptionalVisibility ALIAS ...
445 /// GlobalVar '=' OptionalLinkage OptionalVisibility ... -> global variable
446 bool LLParser::ParseNamedGlobal() {
447 assert(Lex.getKind() == lltok::GlobalVar);
448 LocTy NameLoc = Lex.getLoc();
449 std::string Name = Lex.getStrVal();
453 unsigned Linkage, Visibility;
454 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
455 ParseOptionalLinkage(Linkage, HasLinkage) ||
456 ParseOptionalVisibility(Visibility))
459 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
460 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
461 return ParseAlias(Name, NameLoc, Visibility);
465 // ::= '!' STRINGCONSTANT
466 bool LLParser::ParseMDString(MDString *&Result) {
468 if (ParseStringConstant(Str)) return true;
469 Result = MDString::get(Context, Str);
474 // ::= '!' MDNodeNumber
475 bool LLParser::ParseMDNodeID(MDNode *&Result) {
476 // !{ ..., !42, ... }
478 if (ParseUInt32(MID)) return true;
480 // Check existing MDNode.
481 if (MID < NumberedMetadata.size() && NumberedMetadata[MID] != 0) {
482 Result = NumberedMetadata[MID];
486 // Create MDNode forward reference.
488 // FIXME: This is not unique enough!
489 std::string FwdRefName = "llvm.mdnode.fwdref." + utostr(MID);
490 Value *V = MDString::get(Context, FwdRefName);
491 MDNode *FwdNode = MDNode::get(Context, &V, 1);
492 ForwardRefMDNodes[MID] = std::make_pair(FwdNode, Lex.getLoc());
494 if (NumberedMetadata.size() <= MID)
495 NumberedMetadata.resize(MID+1);
496 NumberedMetadata[MID] = FwdNode;
501 /// ParseNamedMetadata:
502 /// !foo = !{ !1, !2 }
503 bool LLParser::ParseNamedMetadata() {
504 assert(Lex.getKind() == lltok::MetadataVar);
505 std::string Name = Lex.getStrVal();
508 if (ParseToken(lltok::equal, "expected '=' here") ||
509 ParseToken(lltok::exclaim, "Expected '!' here") ||
510 ParseToken(lltok::lbrace, "Expected '{' here"))
513 SmallVector<MDNode *, 8> Elts;
515 if (ParseToken(lltok::exclaim, "Expected '!' here"))
519 if (ParseMDNodeID(N)) return true;
521 } while (EatIfPresent(lltok::comma));
523 if (ParseToken(lltok::rbrace, "expected end of metadata node"))
526 NamedMDNode::Create(Context, Name, Elts.data(), Elts.size(), M);
530 /// ParseStandaloneMetadata:
532 bool LLParser::ParseStandaloneMetadata() {
533 assert(Lex.getKind() == lltok::exclaim);
535 unsigned MetadataID = 0;
538 PATypeHolder Ty(Type::getVoidTy(Context));
539 SmallVector<Value *, 16> Elts;
540 if (ParseUInt32(MetadataID) ||
541 ParseToken(lltok::equal, "expected '=' here") ||
542 ParseType(Ty, TyLoc) ||
543 ParseToken(lltok::exclaim, "Expected '!' here") ||
544 ParseToken(lltok::lbrace, "Expected '{' here") ||
545 ParseMDNodeVector(Elts) ||
546 ParseToken(lltok::rbrace, "expected end of metadata node"))
549 MDNode *Init = MDNode::get(Context, Elts.data(), Elts.size());
551 // See if this was forward referenced, if so, handle it.
552 std::map<unsigned, std::pair<TrackingVH<MDNode>, LocTy> >::iterator
553 FI = ForwardRefMDNodes.find(MetadataID);
554 if (FI != ForwardRefMDNodes.end()) {
555 FI->second.first->replaceAllUsesWith(Init);
556 ForwardRefMDNodes.erase(FI);
558 assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work");
560 if (MetadataID >= NumberedMetadata.size())
561 NumberedMetadata.resize(MetadataID+1);
563 if (NumberedMetadata[MetadataID] != 0)
564 return TokError("Metadata id is already used");
565 NumberedMetadata[MetadataID] = Init;
572 /// ::= GlobalVar '=' OptionalVisibility 'alias' OptionalLinkage Aliasee
575 /// ::= 'bitcast' '(' TypeAndValue 'to' Type ')'
576 /// ::= 'getelementptr' 'inbounds'? '(' ... ')'
578 /// Everything through visibility has already been parsed.
580 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc,
581 unsigned Visibility) {
582 assert(Lex.getKind() == lltok::kw_alias);
585 LocTy LinkageLoc = Lex.getLoc();
586 if (ParseOptionalLinkage(Linkage))
589 if (Linkage != GlobalValue::ExternalLinkage &&
590 Linkage != GlobalValue::WeakAnyLinkage &&
591 Linkage != GlobalValue::WeakODRLinkage &&
592 Linkage != GlobalValue::InternalLinkage &&
593 Linkage != GlobalValue::PrivateLinkage &&
594 Linkage != GlobalValue::LinkerPrivateLinkage)
595 return Error(LinkageLoc, "invalid linkage type for alias");
598 LocTy AliaseeLoc = Lex.getLoc();
599 if (Lex.getKind() != lltok::kw_bitcast &&
600 Lex.getKind() != lltok::kw_getelementptr) {
601 if (ParseGlobalTypeAndValue(Aliasee)) return true;
603 // The bitcast dest type is not present, it is implied by the dest type.
605 if (ParseValID(ID)) return true;
606 if (ID.Kind != ValID::t_Constant)
607 return Error(AliaseeLoc, "invalid aliasee");
608 Aliasee = ID.ConstantVal;
611 if (!isa<PointerType>(Aliasee->getType()))
612 return Error(AliaseeLoc, "alias must have pointer type");
614 // Okay, create the alias but do not insert it into the module yet.
615 GlobalAlias* GA = new GlobalAlias(Aliasee->getType(),
616 (GlobalValue::LinkageTypes)Linkage, Name,
618 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
620 // See if this value already exists in the symbol table. If so, it is either
621 // a redefinition or a definition of a forward reference.
622 if (GlobalValue *Val = M->getNamedValue(Name)) {
623 // See if this was a redefinition. If so, there is no entry in
625 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
626 I = ForwardRefVals.find(Name);
627 if (I == ForwardRefVals.end())
628 return Error(NameLoc, "redefinition of global named '@" + Name + "'");
630 // Otherwise, this was a definition of forward ref. Verify that types
632 if (Val->getType() != GA->getType())
633 return Error(NameLoc,
634 "forward reference and definition of alias have different types");
636 // If they agree, just RAUW the old value with the alias and remove the
638 Val->replaceAllUsesWith(GA);
639 Val->eraseFromParent();
640 ForwardRefVals.erase(I);
643 // Insert into the module, we know its name won't collide now.
644 M->getAliasList().push_back(GA);
645 assert(GA->getNameStr() == Name && "Should not be a name conflict!");
651 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalThreadLocal
652 /// OptionalAddrSpace GlobalType Type Const
653 /// ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
654 /// OptionalAddrSpace GlobalType Type Const
656 /// Everything through visibility has been parsed already.
658 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
659 unsigned Linkage, bool HasLinkage,
660 unsigned Visibility) {
662 bool ThreadLocal, IsConstant;
665 PATypeHolder Ty(Type::getVoidTy(Context));
666 if (ParseOptionalToken(lltok::kw_thread_local, ThreadLocal) ||
667 ParseOptionalAddrSpace(AddrSpace) ||
668 ParseGlobalType(IsConstant) ||
669 ParseType(Ty, TyLoc))
672 // If the linkage is specified and is external, then no initializer is
675 if (!HasLinkage || (Linkage != GlobalValue::DLLImportLinkage &&
676 Linkage != GlobalValue::ExternalWeakLinkage &&
677 Linkage != GlobalValue::ExternalLinkage)) {
678 if (ParseGlobalValue(Ty, Init))
682 if (isa<FunctionType>(Ty) || Ty->isLabelTy())
683 return Error(TyLoc, "invalid type for global variable");
685 GlobalVariable *GV = 0;
687 // See if the global was forward referenced, if so, use the global.
689 if (GlobalValue *GVal = M->getNamedValue(Name)) {
690 if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
691 return Error(NameLoc, "redefinition of global '@" + Name + "'");
692 GV = cast<GlobalVariable>(GVal);
695 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
696 I = ForwardRefValIDs.find(NumberedVals.size());
697 if (I != ForwardRefValIDs.end()) {
698 GV = cast<GlobalVariable>(I->second.first);
699 ForwardRefValIDs.erase(I);
704 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, 0,
705 Name, 0, false, AddrSpace);
707 if (GV->getType()->getElementType() != Ty)
709 "forward reference and definition of global have different types");
711 // Move the forward-reference to the correct spot in the module.
712 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
716 NumberedVals.push_back(GV);
718 // Set the parsed properties on the global.
720 GV->setInitializer(Init);
721 GV->setConstant(IsConstant);
722 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
723 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
724 GV->setThreadLocal(ThreadLocal);
726 // Parse attributes on the global.
727 while (Lex.getKind() == lltok::comma) {
730 if (Lex.getKind() == lltok::kw_section) {
732 GV->setSection(Lex.getStrVal());
733 if (ParseToken(lltok::StringConstant, "expected global section string"))
735 } else if (Lex.getKind() == lltok::kw_align) {
737 if (ParseOptionalAlignment(Alignment)) return true;
738 GV->setAlignment(Alignment);
740 TokError("unknown global variable property!");
748 //===----------------------------------------------------------------------===//
749 // GlobalValue Reference/Resolution Routines.
750 //===----------------------------------------------------------------------===//
752 /// GetGlobalVal - Get a value with the specified name or ID, creating a
753 /// forward reference record if needed. This can return null if the value
754 /// exists but does not have the right type.
755 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, const Type *Ty,
757 const PointerType *PTy = dyn_cast<PointerType>(Ty);
759 Error(Loc, "global variable reference must have pointer type");
763 // Look this name up in the normal function symbol table.
765 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
767 // If this is a forward reference for the value, see if we already created a
768 // forward ref record.
770 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
771 I = ForwardRefVals.find(Name);
772 if (I != ForwardRefVals.end())
773 Val = I->second.first;
776 // If we have the value in the symbol table or fwd-ref table, return it.
778 if (Val->getType() == Ty) return Val;
779 Error(Loc, "'@" + Name + "' defined with type '" +
780 Val->getType()->getDescription() + "'");
784 // Otherwise, create a new forward reference for this value and remember it.
786 if (const FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType())) {
787 // Function types can return opaque but functions can't.
788 if (isa<OpaqueType>(FT->getReturnType())) {
789 Error(Loc, "function may not return opaque type");
793 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
795 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
796 GlobalValue::ExternalWeakLinkage, 0, Name);
799 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
803 GlobalValue *LLParser::GetGlobalVal(unsigned ID, const Type *Ty, LocTy Loc) {
804 const PointerType *PTy = dyn_cast<PointerType>(Ty);
806 Error(Loc, "global variable reference must have pointer type");
810 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
812 // If this is a forward reference for the value, see if we already created a
813 // forward ref record.
815 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
816 I = ForwardRefValIDs.find(ID);
817 if (I != ForwardRefValIDs.end())
818 Val = I->second.first;
821 // If we have the value in the symbol table or fwd-ref table, return it.
823 if (Val->getType() == Ty) return Val;
824 Error(Loc, "'@" + utostr(ID) + "' defined with type '" +
825 Val->getType()->getDescription() + "'");
829 // Otherwise, create a new forward reference for this value and remember it.
831 if (const FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType())) {
832 // Function types can return opaque but functions can't.
833 if (isa<OpaqueType>(FT->getReturnType())) {
834 Error(Loc, "function may not return opaque type");
837 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
839 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
840 GlobalValue::ExternalWeakLinkage, 0, "");
843 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
848 //===----------------------------------------------------------------------===//
850 //===----------------------------------------------------------------------===//
852 /// ParseToken - If the current token has the specified kind, eat it and return
853 /// success. Otherwise, emit the specified error and return failure.
854 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
855 if (Lex.getKind() != T)
856 return TokError(ErrMsg);
861 /// ParseStringConstant
862 /// ::= StringConstant
863 bool LLParser::ParseStringConstant(std::string &Result) {
864 if (Lex.getKind() != lltok::StringConstant)
865 return TokError("expected string constant");
866 Result = Lex.getStrVal();
873 bool LLParser::ParseUInt32(unsigned &Val) {
874 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
875 return TokError("expected integer");
876 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
877 if (Val64 != unsigned(Val64))
878 return TokError("expected 32-bit integer (too large)");
885 /// ParseOptionalAddrSpace
887 /// := 'addrspace' '(' uint32 ')'
888 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
890 if (!EatIfPresent(lltok::kw_addrspace))
892 return ParseToken(lltok::lparen, "expected '(' in address space") ||
893 ParseUInt32(AddrSpace) ||
894 ParseToken(lltok::rparen, "expected ')' in address space");
897 /// ParseOptionalAttrs - Parse a potentially empty attribute list. AttrKind
898 /// indicates what kind of attribute list this is: 0: function arg, 1: result,
899 /// 2: function attr.
900 /// 3: function arg after value: FIXME: REMOVE IN LLVM 3.0
901 bool LLParser::ParseOptionalAttrs(unsigned &Attrs, unsigned AttrKind) {
902 Attrs = Attribute::None;
903 LocTy AttrLoc = Lex.getLoc();
906 switch (Lex.getKind()) {
909 // Treat these as signext/zeroext if they occur in the argument list after
910 // the value, as in "call i8 @foo(i8 10 sext)". If they occur before the
911 // value, as in "call i8 @foo(i8 sext (" then it is part of a constant
913 // FIXME: REMOVE THIS IN LLVM 3.0
915 if (Lex.getKind() == lltok::kw_sext)
916 Attrs |= Attribute::SExt;
918 Attrs |= Attribute::ZExt;
922 default: // End of attributes.
923 if (AttrKind != 2 && (Attrs & Attribute::FunctionOnly))
924 return Error(AttrLoc, "invalid use of function-only attribute");
926 if (AttrKind != 0 && AttrKind != 3 && (Attrs & Attribute::ParameterOnly))
927 return Error(AttrLoc, "invalid use of parameter-only attribute");
930 case lltok::kw_zeroext: Attrs |= Attribute::ZExt; break;
931 case lltok::kw_signext: Attrs |= Attribute::SExt; break;
932 case lltok::kw_inreg: Attrs |= Attribute::InReg; break;
933 case lltok::kw_sret: Attrs |= Attribute::StructRet; break;
934 case lltok::kw_noalias: Attrs |= Attribute::NoAlias; break;
935 case lltok::kw_nocapture: Attrs |= Attribute::NoCapture; break;
936 case lltok::kw_byval: Attrs |= Attribute::ByVal; break;
937 case lltok::kw_nest: Attrs |= Attribute::Nest; break;
939 case lltok::kw_noreturn: Attrs |= Attribute::NoReturn; break;
940 case lltok::kw_nounwind: Attrs |= Attribute::NoUnwind; break;
941 case lltok::kw_noinline: Attrs |= Attribute::NoInline; break;
942 case lltok::kw_readnone: Attrs |= Attribute::ReadNone; break;
943 case lltok::kw_readonly: Attrs |= Attribute::ReadOnly; break;
944 case lltok::kw_inlinehint: Attrs |= Attribute::InlineHint; break;
945 case lltok::kw_alwaysinline: Attrs |= Attribute::AlwaysInline; break;
946 case lltok::kw_optsize: Attrs |= Attribute::OptimizeForSize; break;
947 case lltok::kw_ssp: Attrs |= Attribute::StackProtect; break;
948 case lltok::kw_sspreq: Attrs |= Attribute::StackProtectReq; break;
949 case lltok::kw_noredzone: Attrs |= Attribute::NoRedZone; break;
950 case lltok::kw_noimplicitfloat: Attrs |= Attribute::NoImplicitFloat; break;
951 case lltok::kw_naked: Attrs |= Attribute::Naked; break;
953 case lltok::kw_align: {
955 if (ParseOptionalAlignment(Alignment))
957 Attrs |= Attribute::constructAlignmentFromInt(Alignment);
965 /// ParseOptionalLinkage
968 /// ::= 'linker_private'
973 /// ::= 'linkonce_odr'
978 /// ::= 'extern_weak'
980 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
982 switch (Lex.getKind()) {
983 default: Res=GlobalValue::ExternalLinkage; return false;
984 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
985 case lltok::kw_linker_private: Res = GlobalValue::LinkerPrivateLinkage; break;
986 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
987 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
988 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
989 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
990 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
991 case lltok::kw_available_externally:
992 Res = GlobalValue::AvailableExternallyLinkage;
994 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
995 case lltok::kw_dllexport: Res = GlobalValue::DLLExportLinkage; break;
996 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
997 case lltok::kw_dllimport: Res = GlobalValue::DLLImportLinkage; break;
998 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
999 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1006 /// ParseOptionalVisibility
1012 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1013 switch (Lex.getKind()) {
1014 default: Res = GlobalValue::DefaultVisibility; return false;
1015 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1016 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1017 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1023 /// ParseOptionalCallingConv
1028 /// ::= 'x86_stdcallcc'
1029 /// ::= 'x86_fastcallcc'
1030 /// ::= 'arm_apcscc'
1031 /// ::= 'arm_aapcscc'
1032 /// ::= 'arm_aapcs_vfpcc'
1033 /// ::= 'msp430_intrcc'
1036 bool LLParser::ParseOptionalCallingConv(CallingConv::ID &CC) {
1037 switch (Lex.getKind()) {
1038 default: CC = CallingConv::C; return false;
1039 case lltok::kw_ccc: CC = CallingConv::C; break;
1040 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1041 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1042 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1043 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1044 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1045 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1046 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1047 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1048 case lltok::kw_cc: {
1049 unsigned ArbitraryCC;
1051 if (ParseUInt32(ArbitraryCC)) {
1054 CC = static_cast<CallingConv::ID>(ArbitraryCC);
1064 /// ParseInstructionMetadata
1065 /// ::= !dbg !42 (',' !dbg !57)*
1067 ParseInstructionMetadata(SmallVectorImpl<std::pair<unsigned,
1068 MDNode *> > &Result){
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 Result.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 /// ParseOptionalCommaAlign
1107 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1109 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1110 bool &AteExtraComma) {
1111 AteExtraComma = false;
1112 while (EatIfPresent(lltok::comma)) {
1113 // Metadata at the end is an early exit.
1114 if (Lex.getKind() == lltok::MetadataVar) {
1115 AteExtraComma = true;
1119 if (Lex.getKind() == lltok::kw_align) {
1120 if (ParseOptionalAlignment(Alignment)) return true;
1129 /// ParseIndexList - This parses the index list for an insert/extractvalue
1130 /// instruction. This sets AteExtraComma in the case where we eat an extra
1131 /// comma at the end of the line and find that it is followed by metadata.
1132 /// Clients that don't allow metadata can call the version of this function that
1133 /// only takes one argument.
1136 /// ::= (',' uint32)+
1138 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1139 bool &AteExtraComma) {
1140 AteExtraComma = false;
1142 if (Lex.getKind() != lltok::comma)
1143 return TokError("expected ',' as start of index list");
1145 while (EatIfPresent(lltok::comma)) {
1146 if (Lex.getKind() == lltok::MetadataVar) {
1147 AteExtraComma = true;
1151 if (ParseUInt32(Idx)) return true;
1152 Indices.push_back(Idx);
1158 //===----------------------------------------------------------------------===//
1160 //===----------------------------------------------------------------------===//
1162 /// ParseType - Parse and resolve a full type.
1163 bool LLParser::ParseType(PATypeHolder &Result, bool AllowVoid) {
1164 LocTy TypeLoc = Lex.getLoc();
1165 if (ParseTypeRec(Result)) return true;
1167 // Verify no unresolved uprefs.
1168 if (!UpRefs.empty())
1169 return Error(UpRefs.back().Loc, "invalid unresolved type up reference");
1171 if (!AllowVoid && Result.get()->isVoidTy())
1172 return Error(TypeLoc, "void type only allowed for function results");
1177 /// HandleUpRefs - Every time we finish a new layer of types, this function is
1178 /// called. It loops through the UpRefs vector, which is a list of the
1179 /// currently active types. For each type, if the up-reference is contained in
1180 /// the newly completed type, we decrement the level count. When the level
1181 /// count reaches zero, the up-referenced type is the type that is passed in:
1182 /// thus we can complete the cycle.
1184 PATypeHolder LLParser::HandleUpRefs(const Type *ty) {
1185 // If Ty isn't abstract, or if there are no up-references in it, then there is
1186 // nothing to resolve here.
1187 if (!ty->isAbstract() || UpRefs.empty()) return ty;
1189 PATypeHolder Ty(ty);
1191 dbgs() << "Type '" << Ty->getDescription()
1192 << "' newly formed. Resolving upreferences.\n"
1193 << UpRefs.size() << " upreferences active!\n";
1196 // If we find any resolvable upreferences (i.e., those whose NestingLevel goes
1197 // to zero), we resolve them all together before we resolve them to Ty. At
1198 // the end of the loop, if there is anything to resolve to Ty, it will be in
1200 OpaqueType *TypeToResolve = 0;
1202 for (unsigned i = 0; i != UpRefs.size(); ++i) {
1203 // Determine if 'Ty' directly contains this up-references 'LastContainedTy'.
1205 std::find(Ty->subtype_begin(), Ty->subtype_end(),
1206 UpRefs[i].LastContainedTy) != Ty->subtype_end();
1209 dbgs() << " UR#" << i << " - TypeContains(" << Ty->getDescription() << ", "
1210 << UpRefs[i].LastContainedTy->getDescription() << ") = "
1211 << (ContainsType ? "true" : "false")
1212 << " level=" << UpRefs[i].NestingLevel << "\n";
1217 // Decrement level of upreference
1218 unsigned Level = --UpRefs[i].NestingLevel;
1219 UpRefs[i].LastContainedTy = Ty;
1221 // If the Up-reference has a non-zero level, it shouldn't be resolved yet.
1226 dbgs() << " * Resolving upreference for " << UpRefs[i].UpRefTy << "\n";
1229 TypeToResolve = UpRefs[i].UpRefTy;
1231 UpRefs[i].UpRefTy->refineAbstractTypeTo(TypeToResolve);
1232 UpRefs.erase(UpRefs.begin()+i); // Remove from upreference list.
1233 --i; // Do not skip the next element.
1237 TypeToResolve->refineAbstractTypeTo(Ty);
1243 /// ParseTypeRec - The recursive function used to process the internal
1244 /// implementation details of types.
1245 bool LLParser::ParseTypeRec(PATypeHolder &Result) {
1246 switch (Lex.getKind()) {
1248 return TokError("expected type");
1250 // TypeRec ::= 'float' | 'void' (etc)
1251 Result = Lex.getTyVal();
1254 case lltok::kw_opaque:
1255 // TypeRec ::= 'opaque'
1256 Result = OpaqueType::get(Context);
1260 // TypeRec ::= '{' ... '}'
1261 if (ParseStructType(Result, false))
1264 case lltok::lsquare:
1265 // TypeRec ::= '[' ... ']'
1266 Lex.Lex(); // eat the lsquare.
1267 if (ParseArrayVectorType(Result, false))
1270 case lltok::less: // Either vector or packed struct.
1271 // TypeRec ::= '<' ... '>'
1273 if (Lex.getKind() == lltok::lbrace) {
1274 if (ParseStructType(Result, true) ||
1275 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1277 } else if (ParseArrayVectorType(Result, true))
1280 case lltok::LocalVar:
1281 case lltok::StringConstant: // FIXME: REMOVE IN LLVM 3.0
1283 if (const Type *T = M->getTypeByName(Lex.getStrVal())) {
1286 Result = OpaqueType::get(Context);
1287 ForwardRefTypes.insert(std::make_pair(Lex.getStrVal(),
1288 std::make_pair(Result,
1290 M->addTypeName(Lex.getStrVal(), Result.get());
1295 case lltok::LocalVarID:
1297 if (Lex.getUIntVal() < NumberedTypes.size())
1298 Result = NumberedTypes[Lex.getUIntVal()];
1300 std::map<unsigned, std::pair<PATypeHolder, LocTy> >::iterator
1301 I = ForwardRefTypeIDs.find(Lex.getUIntVal());
1302 if (I != ForwardRefTypeIDs.end())
1303 Result = I->second.first;
1305 Result = OpaqueType::get(Context);
1306 ForwardRefTypeIDs.insert(std::make_pair(Lex.getUIntVal(),
1307 std::make_pair(Result,
1313 case lltok::backslash: {
1314 // TypeRec ::= '\' 4
1317 if (ParseUInt32(Val)) return true;
1318 OpaqueType *OT = OpaqueType::get(Context); //Use temporary placeholder.
1319 UpRefs.push_back(UpRefRecord(Lex.getLoc(), Val, OT));
1325 // Parse the type suffixes.
1327 switch (Lex.getKind()) {
1329 default: return false;
1331 // TypeRec ::= TypeRec '*'
1333 if (Result.get()->isLabelTy())
1334 return TokError("basic block pointers are invalid");
1335 if (Result.get()->isVoidTy())
1336 return TokError("pointers to void are invalid; use i8* instead");
1337 if (!PointerType::isValidElementType(Result.get()))
1338 return TokError("pointer to this type is invalid");
1339 Result = HandleUpRefs(PointerType::getUnqual(Result.get()));
1343 // TypeRec ::= TypeRec 'addrspace' '(' uint32 ')' '*'
1344 case lltok::kw_addrspace: {
1345 if (Result.get()->isLabelTy())
1346 return TokError("basic block pointers are invalid");
1347 if (Result.get()->isVoidTy())
1348 return TokError("pointers to void are invalid; use i8* instead");
1349 if (!PointerType::isValidElementType(Result.get()))
1350 return TokError("pointer to this type is invalid");
1352 if (ParseOptionalAddrSpace(AddrSpace) ||
1353 ParseToken(lltok::star, "expected '*' in address space"))
1356 Result = HandleUpRefs(PointerType::get(Result.get(), AddrSpace));
1360 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1362 if (ParseFunctionType(Result))
1369 /// ParseParameterList
1371 /// ::= '(' Arg (',' Arg)* ')'
1373 /// ::= Type OptionalAttributes Value OptionalAttributes
1374 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1375 PerFunctionState &PFS) {
1376 if (ParseToken(lltok::lparen, "expected '(' in call"))
1379 while (Lex.getKind() != lltok::rparen) {
1380 // If this isn't the first argument, we need a comma.
1381 if (!ArgList.empty() &&
1382 ParseToken(lltok::comma, "expected ',' in argument list"))
1385 // Parse the argument.
1387 PATypeHolder ArgTy(Type::getVoidTy(Context));
1388 unsigned ArgAttrs1 = Attribute::None;
1389 unsigned ArgAttrs2 = Attribute::None;
1391 if (ParseType(ArgTy, ArgLoc))
1394 // Otherwise, handle normal operands.
1395 if (ParseOptionalAttrs(ArgAttrs1, 0) ||
1396 ParseValue(ArgTy, V, PFS) ||
1397 // FIXME: Should not allow attributes after the argument, remove this
1399 ParseOptionalAttrs(ArgAttrs2, 3))
1401 ArgList.push_back(ParamInfo(ArgLoc, V, ArgAttrs1|ArgAttrs2));
1404 Lex.Lex(); // Lex the ')'.
1410 /// ParseArgumentList - Parse the argument list for a function type or function
1411 /// prototype. If 'inType' is true then we are parsing a FunctionType.
1412 /// ::= '(' ArgTypeListI ')'
1416 /// ::= ArgTypeList ',' '...'
1417 /// ::= ArgType (',' ArgType)*
1419 bool LLParser::ParseArgumentList(std::vector<ArgInfo> &ArgList,
1420 bool &isVarArg, bool inType) {
1422 assert(Lex.getKind() == lltok::lparen);
1423 Lex.Lex(); // eat the (.
1425 if (Lex.getKind() == lltok::rparen) {
1427 } else if (Lex.getKind() == lltok::dotdotdot) {
1431 LocTy TypeLoc = Lex.getLoc();
1432 PATypeHolder ArgTy(Type::getVoidTy(Context));
1436 // If we're parsing a type, use ParseTypeRec, because we allow recursive
1437 // types (such as a function returning a pointer to itself). If parsing a
1438 // function prototype, we require fully resolved types.
1439 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1440 ParseOptionalAttrs(Attrs, 0)) return true;
1442 if (ArgTy->isVoidTy())
1443 return Error(TypeLoc, "argument can not have void type");
1445 if (Lex.getKind() == lltok::LocalVar ||
1446 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1447 Name = Lex.getStrVal();
1451 if (!FunctionType::isValidArgumentType(ArgTy))
1452 return Error(TypeLoc, "invalid type for function argument");
1454 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1456 while (EatIfPresent(lltok::comma)) {
1457 // Handle ... at end of arg list.
1458 if (EatIfPresent(lltok::dotdotdot)) {
1463 // Otherwise must be an argument type.
1464 TypeLoc = Lex.getLoc();
1465 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1466 ParseOptionalAttrs(Attrs, 0)) return true;
1468 if (ArgTy->isVoidTy())
1469 return Error(TypeLoc, "argument can not have void type");
1471 if (Lex.getKind() == lltok::LocalVar ||
1472 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1473 Name = Lex.getStrVal();
1479 if (!ArgTy->isFirstClassType() && !isa<OpaqueType>(ArgTy))
1480 return Error(TypeLoc, "invalid type for function argument");
1482 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1486 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1489 /// ParseFunctionType
1490 /// ::= Type ArgumentList OptionalAttrs
1491 bool LLParser::ParseFunctionType(PATypeHolder &Result) {
1492 assert(Lex.getKind() == lltok::lparen);
1494 if (!FunctionType::isValidReturnType(Result))
1495 return TokError("invalid function return type");
1497 std::vector<ArgInfo> ArgList;
1500 if (ParseArgumentList(ArgList, isVarArg, true) ||
1501 // FIXME: Allow, but ignore attributes on function types!
1502 // FIXME: Remove in LLVM 3.0
1503 ParseOptionalAttrs(Attrs, 2))
1506 // Reject names on the arguments lists.
1507 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1508 if (!ArgList[i].Name.empty())
1509 return Error(ArgList[i].Loc, "argument name invalid in function type");
1510 if (!ArgList[i].Attrs != 0) {
1511 // Allow but ignore attributes on function types; this permits
1513 // FIXME: REJECT ATTRIBUTES ON FUNCTION TYPES in LLVM 3.0
1517 std::vector<const Type*> ArgListTy;
1518 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1519 ArgListTy.push_back(ArgList[i].Type);
1521 Result = HandleUpRefs(FunctionType::get(Result.get(),
1522 ArgListTy, isVarArg));
1526 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
1529 /// ::= '{' TypeRec (',' TypeRec)* '}'
1530 /// ::= '<' '{' '}' '>'
1531 /// ::= '<' '{' TypeRec (',' TypeRec)* '}' '>'
1532 bool LLParser::ParseStructType(PATypeHolder &Result, bool Packed) {
1533 assert(Lex.getKind() == lltok::lbrace);
1534 Lex.Lex(); // Consume the '{'
1536 if (EatIfPresent(lltok::rbrace)) {
1537 Result = StructType::get(Context, Packed);
1541 std::vector<PATypeHolder> ParamsList;
1542 LocTy EltTyLoc = Lex.getLoc();
1543 if (ParseTypeRec(Result)) return true;
1544 ParamsList.push_back(Result);
1546 if (Result->isVoidTy())
1547 return Error(EltTyLoc, "struct element can not have void type");
1548 if (!StructType::isValidElementType(Result))
1549 return Error(EltTyLoc, "invalid element type for struct");
1551 while (EatIfPresent(lltok::comma)) {
1552 EltTyLoc = Lex.getLoc();
1553 if (ParseTypeRec(Result)) return true;
1555 if (Result->isVoidTy())
1556 return Error(EltTyLoc, "struct element can not have void type");
1557 if (!StructType::isValidElementType(Result))
1558 return Error(EltTyLoc, "invalid element type for struct");
1560 ParamsList.push_back(Result);
1563 if (ParseToken(lltok::rbrace, "expected '}' at end of struct"))
1566 std::vector<const Type*> ParamsListTy;
1567 for (unsigned i = 0, e = ParamsList.size(); i != e; ++i)
1568 ParamsListTy.push_back(ParamsList[i].get());
1569 Result = HandleUpRefs(StructType::get(Context, ParamsListTy, Packed));
1573 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
1574 /// token has already been consumed.
1576 /// ::= '[' APSINTVAL 'x' Types ']'
1577 /// ::= '<' APSINTVAL 'x' Types '>'
1578 bool LLParser::ParseArrayVectorType(PATypeHolder &Result, bool isVector) {
1579 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
1580 Lex.getAPSIntVal().getBitWidth() > 64)
1581 return TokError("expected number in address space");
1583 LocTy SizeLoc = Lex.getLoc();
1584 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
1587 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
1590 LocTy TypeLoc = Lex.getLoc();
1591 PATypeHolder EltTy(Type::getVoidTy(Context));
1592 if (ParseTypeRec(EltTy)) return true;
1594 if (EltTy->isVoidTy())
1595 return Error(TypeLoc, "array and vector element type cannot be void");
1597 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
1598 "expected end of sequential type"))
1603 return Error(SizeLoc, "zero element vector is illegal");
1604 if ((unsigned)Size != Size)
1605 return Error(SizeLoc, "size too large for vector");
1606 if (!VectorType::isValidElementType(EltTy))
1607 return Error(TypeLoc, "vector element type must be fp or integer");
1608 Result = VectorType::get(EltTy, unsigned(Size));
1610 if (!ArrayType::isValidElementType(EltTy))
1611 return Error(TypeLoc, "invalid array element type");
1612 Result = HandleUpRefs(ArrayType::get(EltTy, Size));
1617 //===----------------------------------------------------------------------===//
1618 // Function Semantic Analysis.
1619 //===----------------------------------------------------------------------===//
1621 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
1623 : P(p), F(f), FunctionNumber(functionNumber) {
1625 // Insert unnamed arguments into the NumberedVals list.
1626 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
1629 NumberedVals.push_back(AI);
1632 LLParser::PerFunctionState::~PerFunctionState() {
1633 // If there were any forward referenced non-basicblock values, delete them.
1634 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
1635 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
1636 if (!isa<BasicBlock>(I->second.first)) {
1637 I->second.first->replaceAllUsesWith(
1638 UndefValue::get(I->second.first->getType()));
1639 delete I->second.first;
1640 I->second.first = 0;
1643 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1644 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
1645 if (!isa<BasicBlock>(I->second.first)) {
1646 I->second.first->replaceAllUsesWith(
1647 UndefValue::get(I->second.first->getType()));
1648 delete I->second.first;
1649 I->second.first = 0;
1653 bool LLParser::PerFunctionState::FinishFunction() {
1654 // Check to see if someone took the address of labels in this block.
1655 if (!P.ForwardRefBlockAddresses.empty()) {
1657 if (!F.getName().empty()) {
1658 FunctionID.Kind = ValID::t_GlobalName;
1659 FunctionID.StrVal = F.getName();
1661 FunctionID.Kind = ValID::t_GlobalID;
1662 FunctionID.UIntVal = FunctionNumber;
1665 std::map<ValID, std::vector<std::pair<ValID, GlobalValue*> > >::iterator
1666 FRBAI = P.ForwardRefBlockAddresses.find(FunctionID);
1667 if (FRBAI != P.ForwardRefBlockAddresses.end()) {
1668 // Resolve all these references.
1669 if (P.ResolveForwardRefBlockAddresses(&F, FRBAI->second, this))
1672 P.ForwardRefBlockAddresses.erase(FRBAI);
1676 if (!ForwardRefVals.empty())
1677 return P.Error(ForwardRefVals.begin()->second.second,
1678 "use of undefined value '%" + ForwardRefVals.begin()->first +
1680 if (!ForwardRefValIDs.empty())
1681 return P.Error(ForwardRefValIDs.begin()->second.second,
1682 "use of undefined value '%" +
1683 utostr(ForwardRefValIDs.begin()->first) + "'");
1688 /// GetVal - Get a value with the specified name or ID, creating a
1689 /// forward reference record if needed. This can return null if the value
1690 /// exists but does not have the right type.
1691 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
1692 const Type *Ty, LocTy Loc) {
1693 // Look this name up in the normal function symbol table.
1694 Value *Val = F.getValueSymbolTable().lookup(Name);
1696 // If this is a forward reference for the value, see if we already created a
1697 // forward ref record.
1699 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1700 I = ForwardRefVals.find(Name);
1701 if (I != ForwardRefVals.end())
1702 Val = I->second.first;
1705 // If we have the value in the symbol table or fwd-ref table, return it.
1707 if (Val->getType() == Ty) return Val;
1708 if (Ty->isLabelTy())
1709 P.Error(Loc, "'%" + Name + "' is not a basic block");
1711 P.Error(Loc, "'%" + Name + "' defined with type '" +
1712 Val->getType()->getDescription() + "'");
1716 // Don't make placeholders with invalid type.
1717 if (!Ty->isFirstClassType() && !isa<OpaqueType>(Ty) && !Ty->isLabelTy()) {
1718 P.Error(Loc, "invalid use of a non-first-class type");
1722 // Otherwise, create a new forward reference for this value and remember it.
1724 if (Ty->isLabelTy())
1725 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
1727 FwdVal = new Argument(Ty, Name);
1729 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1733 Value *LLParser::PerFunctionState::GetVal(unsigned ID, const Type *Ty,
1735 // Look this name up in the normal function symbol table.
1736 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
1738 // If this is a forward reference for the value, see if we already created a
1739 // forward ref record.
1741 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1742 I = ForwardRefValIDs.find(ID);
1743 if (I != ForwardRefValIDs.end())
1744 Val = I->second.first;
1747 // If we have the value in the symbol table or fwd-ref table, return it.
1749 if (Val->getType() == Ty) return Val;
1750 if (Ty->isLabelTy())
1751 P.Error(Loc, "'%" + utostr(ID) + "' is not a basic block");
1753 P.Error(Loc, "'%" + utostr(ID) + "' defined with type '" +
1754 Val->getType()->getDescription() + "'");
1758 if (!Ty->isFirstClassType() && !isa<OpaqueType>(Ty) && !Ty->isLabelTy()) {
1759 P.Error(Loc, "invalid use of a non-first-class type");
1763 // Otherwise, create a new forward reference for this value and remember it.
1765 if (Ty->isLabelTy())
1766 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
1768 FwdVal = new Argument(Ty);
1770 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1774 /// SetInstName - After an instruction is parsed and inserted into its
1775 /// basic block, this installs its name.
1776 bool LLParser::PerFunctionState::SetInstName(int NameID,
1777 const std::string &NameStr,
1778 LocTy NameLoc, Instruction *Inst) {
1779 // If this instruction has void type, it cannot have a name or ID specified.
1780 if (Inst->getType()->isVoidTy()) {
1781 if (NameID != -1 || !NameStr.empty())
1782 return P.Error(NameLoc, "instructions returning void cannot have a name");
1786 // If this was a numbered instruction, verify that the instruction is the
1787 // expected value and resolve any forward references.
1788 if (NameStr.empty()) {
1789 // If neither a name nor an ID was specified, just use the next ID.
1791 NameID = NumberedVals.size();
1793 if (unsigned(NameID) != NumberedVals.size())
1794 return P.Error(NameLoc, "instruction expected to be numbered '%" +
1795 utostr(NumberedVals.size()) + "'");
1797 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
1798 ForwardRefValIDs.find(NameID);
1799 if (FI != ForwardRefValIDs.end()) {
1800 if (FI->second.first->getType() != Inst->getType())
1801 return P.Error(NameLoc, "instruction forward referenced with type '" +
1802 FI->second.first->getType()->getDescription() + "'");
1803 FI->second.first->replaceAllUsesWith(Inst);
1804 delete FI->second.first;
1805 ForwardRefValIDs.erase(FI);
1808 NumberedVals.push_back(Inst);
1812 // Otherwise, the instruction had a name. Resolve forward refs and set it.
1813 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1814 FI = ForwardRefVals.find(NameStr);
1815 if (FI != ForwardRefVals.end()) {
1816 if (FI->second.first->getType() != Inst->getType())
1817 return P.Error(NameLoc, "instruction forward referenced with type '" +
1818 FI->second.first->getType()->getDescription() + "'");
1819 FI->second.first->replaceAllUsesWith(Inst);
1820 delete FI->second.first;
1821 ForwardRefVals.erase(FI);
1824 // Set the name on the instruction.
1825 Inst->setName(NameStr);
1827 if (Inst->getNameStr() != NameStr)
1828 return P.Error(NameLoc, "multiple definition of local value named '" +
1833 /// GetBB - Get a basic block with the specified name or ID, creating a
1834 /// forward reference record if needed.
1835 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
1837 return cast_or_null<BasicBlock>(GetVal(Name,
1838 Type::getLabelTy(F.getContext()), Loc));
1841 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
1842 return cast_or_null<BasicBlock>(GetVal(ID,
1843 Type::getLabelTy(F.getContext()), Loc));
1846 /// DefineBB - Define the specified basic block, which is either named or
1847 /// unnamed. If there is an error, this returns null otherwise it returns
1848 /// the block being defined.
1849 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
1853 BB = GetBB(NumberedVals.size(), Loc);
1855 BB = GetBB(Name, Loc);
1856 if (BB == 0) return 0; // Already diagnosed error.
1858 // Move the block to the end of the function. Forward ref'd blocks are
1859 // inserted wherever they happen to be referenced.
1860 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
1862 // Remove the block from forward ref sets.
1864 ForwardRefValIDs.erase(NumberedVals.size());
1865 NumberedVals.push_back(BB);
1867 // BB forward references are already in the function symbol table.
1868 ForwardRefVals.erase(Name);
1874 //===----------------------------------------------------------------------===//
1876 //===----------------------------------------------------------------------===//
1878 /// ParseValID - Parse an abstract value that doesn't necessarily have a
1879 /// type implied. For example, if we parse "4" we don't know what integer type
1880 /// it has. The value will later be combined with its type and checked for
1882 bool LLParser::ParseValID(ValID &ID) {
1883 ID.Loc = Lex.getLoc();
1884 switch (Lex.getKind()) {
1885 default: return TokError("expected value token");
1886 case lltok::GlobalID: // @42
1887 ID.UIntVal = Lex.getUIntVal();
1888 ID.Kind = ValID::t_GlobalID;
1890 case lltok::GlobalVar: // @foo
1891 ID.StrVal = Lex.getStrVal();
1892 ID.Kind = ValID::t_GlobalName;
1894 case lltok::LocalVarID: // %42
1895 ID.UIntVal = Lex.getUIntVal();
1896 ID.Kind = ValID::t_LocalID;
1898 case lltok::LocalVar: // %foo
1899 case lltok::StringConstant: // "foo" - FIXME: REMOVE IN LLVM 3.0
1900 ID.StrVal = Lex.getStrVal();
1901 ID.Kind = ValID::t_LocalName;
1903 case lltok::exclaim: // !{...} MDNode, !"foo" MDString
1906 if (EatIfPresent(lltok::lbrace)) {
1907 SmallVector<Value*, 16> Elts;
1908 if (ParseMDNodeVector(Elts) ||
1909 ParseToken(lltok::rbrace, "expected end of metadata node"))
1912 ID.MDNodeVal = MDNode::get(Context, Elts.data(), Elts.size());
1913 ID.Kind = ValID::t_MDNode;
1917 // Standalone metadata reference
1918 // !{ ..., !42, ... }
1919 if (Lex.getKind() == lltok::APSInt) {
1920 if (ParseMDNodeID(ID.MDNodeVal)) return true;
1921 ID.Kind = ValID::t_MDNode;
1926 // ::= '!' STRINGCONSTANT
1927 if (ParseMDString(ID.MDStringVal)) return true;
1928 ID.Kind = ValID::t_MDString;
1931 ID.APSIntVal = Lex.getAPSIntVal();
1932 ID.Kind = ValID::t_APSInt;
1934 case lltok::APFloat:
1935 ID.APFloatVal = Lex.getAPFloatVal();
1936 ID.Kind = ValID::t_APFloat;
1938 case lltok::kw_true:
1939 ID.ConstantVal = ConstantInt::getTrue(Context);
1940 ID.Kind = ValID::t_Constant;
1942 case lltok::kw_false:
1943 ID.ConstantVal = ConstantInt::getFalse(Context);
1944 ID.Kind = ValID::t_Constant;
1946 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
1947 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
1948 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
1950 case lltok::lbrace: {
1951 // ValID ::= '{' ConstVector '}'
1953 SmallVector<Constant*, 16> Elts;
1954 if (ParseGlobalValueVector(Elts) ||
1955 ParseToken(lltok::rbrace, "expected end of struct constant"))
1958 ID.ConstantVal = ConstantStruct::get(Context, Elts.data(),
1959 Elts.size(), false);
1960 ID.Kind = ValID::t_Constant;
1964 // ValID ::= '<' ConstVector '>' --> Vector.
1965 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
1967 bool isPackedStruct = EatIfPresent(lltok::lbrace);
1969 SmallVector<Constant*, 16> Elts;
1970 LocTy FirstEltLoc = Lex.getLoc();
1971 if (ParseGlobalValueVector(Elts) ||
1973 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
1974 ParseToken(lltok::greater, "expected end of constant"))
1977 if (isPackedStruct) {
1979 ConstantStruct::get(Context, Elts.data(), Elts.size(), true);
1980 ID.Kind = ValID::t_Constant;
1985 return Error(ID.Loc, "constant vector must not be empty");
1987 if (!Elts[0]->getType()->isInteger() &&
1988 !Elts[0]->getType()->isFloatingPoint())
1989 return Error(FirstEltLoc,
1990 "vector elements must have integer or floating point type");
1992 // Verify that all the vector elements have the same type.
1993 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
1994 if (Elts[i]->getType() != Elts[0]->getType())
1995 return Error(FirstEltLoc,
1996 "vector element #" + utostr(i) +
1997 " is not of type '" + Elts[0]->getType()->getDescription());
1999 ID.ConstantVal = ConstantVector::get(Elts.data(), Elts.size());
2000 ID.Kind = ValID::t_Constant;
2003 case lltok::lsquare: { // Array Constant
2005 SmallVector<Constant*, 16> Elts;
2006 LocTy FirstEltLoc = Lex.getLoc();
2007 if (ParseGlobalValueVector(Elts) ||
2008 ParseToken(lltok::rsquare, "expected end of array constant"))
2011 // Handle empty element.
2013 // Use undef instead of an array because it's inconvenient to determine
2014 // the element type at this point, there being no elements to examine.
2015 ID.Kind = ValID::t_EmptyArray;
2019 if (!Elts[0]->getType()->isFirstClassType())
2020 return Error(FirstEltLoc, "invalid array element type: " +
2021 Elts[0]->getType()->getDescription());
2023 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2025 // Verify all elements are correct type!
2026 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2027 if (Elts[i]->getType() != Elts[0]->getType())
2028 return Error(FirstEltLoc,
2029 "array element #" + utostr(i) +
2030 " is not of type '" +Elts[0]->getType()->getDescription());
2033 ID.ConstantVal = ConstantArray::get(ATy, Elts.data(), Elts.size());
2034 ID.Kind = ValID::t_Constant;
2037 case lltok::kw_c: // c "foo"
2039 ID.ConstantVal = ConstantArray::get(Context, Lex.getStrVal(), false);
2040 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2041 ID.Kind = ValID::t_Constant;
2044 case lltok::kw_asm: {
2045 // ValID ::= 'asm' SideEffect? AlignStack? STRINGCONSTANT ',' STRINGCONSTANT
2046 bool HasSideEffect, AlignStack;
2048 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2049 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2050 ParseStringConstant(ID.StrVal) ||
2051 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2052 ParseToken(lltok::StringConstant, "expected constraint string"))
2054 ID.StrVal2 = Lex.getStrVal();
2055 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1);
2056 ID.Kind = ValID::t_InlineAsm;
2060 case lltok::kw_blockaddress: {
2061 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2065 LocTy FnLoc, LabelLoc;
2067 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2069 ParseToken(lltok::comma, "expected comma in block address expression")||
2070 ParseValID(Label) ||
2071 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2074 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2075 return Error(Fn.Loc, "expected function name in blockaddress");
2076 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2077 return Error(Label.Loc, "expected basic block name in blockaddress");
2079 // Make a global variable as a placeholder for this reference.
2080 GlobalVariable *FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context),
2081 false, GlobalValue::InternalLinkage,
2083 ForwardRefBlockAddresses[Fn].push_back(std::make_pair(Label, FwdRef));
2084 ID.ConstantVal = FwdRef;
2085 ID.Kind = ValID::t_Constant;
2089 case lltok::kw_trunc:
2090 case lltok::kw_zext:
2091 case lltok::kw_sext:
2092 case lltok::kw_fptrunc:
2093 case lltok::kw_fpext:
2094 case lltok::kw_bitcast:
2095 case lltok::kw_uitofp:
2096 case lltok::kw_sitofp:
2097 case lltok::kw_fptoui:
2098 case lltok::kw_fptosi:
2099 case lltok::kw_inttoptr:
2100 case lltok::kw_ptrtoint: {
2101 unsigned Opc = Lex.getUIntVal();
2102 PATypeHolder DestTy(Type::getVoidTy(Context));
2105 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2106 ParseGlobalTypeAndValue(SrcVal) ||
2107 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2108 ParseType(DestTy) ||
2109 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2111 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2112 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2113 SrcVal->getType()->getDescription() + "' to '" +
2114 DestTy->getDescription() + "'");
2115 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2117 ID.Kind = ValID::t_Constant;
2120 case lltok::kw_extractvalue: {
2123 SmallVector<unsigned, 4> Indices;
2124 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2125 ParseGlobalTypeAndValue(Val) ||
2126 ParseIndexList(Indices) ||
2127 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2130 if (!isa<StructType>(Val->getType()) && !isa<ArrayType>(Val->getType()))
2131 return Error(ID.Loc, "extractvalue operand must be array or struct");
2132 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
2134 return Error(ID.Loc, "invalid indices for extractvalue");
2136 ConstantExpr::getExtractValue(Val, Indices.data(), Indices.size());
2137 ID.Kind = ValID::t_Constant;
2140 case lltok::kw_insertvalue: {
2142 Constant *Val0, *Val1;
2143 SmallVector<unsigned, 4> Indices;
2144 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2145 ParseGlobalTypeAndValue(Val0) ||
2146 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2147 ParseGlobalTypeAndValue(Val1) ||
2148 ParseIndexList(Indices) ||
2149 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2151 if (!isa<StructType>(Val0->getType()) && !isa<ArrayType>(Val0->getType()))
2152 return Error(ID.Loc, "extractvalue operand must be array or struct");
2153 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
2155 return Error(ID.Loc, "invalid indices for insertvalue");
2156 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1,
2157 Indices.data(), Indices.size());
2158 ID.Kind = ValID::t_Constant;
2161 case lltok::kw_icmp:
2162 case lltok::kw_fcmp: {
2163 unsigned PredVal, Opc = Lex.getUIntVal();
2164 Constant *Val0, *Val1;
2166 if (ParseCmpPredicate(PredVal, Opc) ||
2167 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2168 ParseGlobalTypeAndValue(Val0) ||
2169 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2170 ParseGlobalTypeAndValue(Val1) ||
2171 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2174 if (Val0->getType() != Val1->getType())
2175 return Error(ID.Loc, "compare operands must have the same type");
2177 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2179 if (Opc == Instruction::FCmp) {
2180 if (!Val0->getType()->isFPOrFPVector())
2181 return Error(ID.Loc, "fcmp requires floating point operands");
2182 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2184 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2185 if (!Val0->getType()->isIntOrIntVector() &&
2186 !isa<PointerType>(Val0->getType()))
2187 return Error(ID.Loc, "icmp requires pointer or integer operands");
2188 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2190 ID.Kind = ValID::t_Constant;
2194 // Binary Operators.
2196 case lltok::kw_fadd:
2198 case lltok::kw_fsub:
2200 case lltok::kw_fmul:
2201 case lltok::kw_udiv:
2202 case lltok::kw_sdiv:
2203 case lltok::kw_fdiv:
2204 case lltok::kw_urem:
2205 case lltok::kw_srem:
2206 case lltok::kw_frem: {
2210 unsigned Opc = Lex.getUIntVal();
2211 Constant *Val0, *Val1;
2213 LocTy ModifierLoc = Lex.getLoc();
2214 if (Opc == Instruction::Add ||
2215 Opc == Instruction::Sub ||
2216 Opc == Instruction::Mul) {
2217 if (EatIfPresent(lltok::kw_nuw))
2219 if (EatIfPresent(lltok::kw_nsw)) {
2221 if (EatIfPresent(lltok::kw_nuw))
2224 } else if (Opc == Instruction::SDiv) {
2225 if (EatIfPresent(lltok::kw_exact))
2228 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2229 ParseGlobalTypeAndValue(Val0) ||
2230 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2231 ParseGlobalTypeAndValue(Val1) ||
2232 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2234 if (Val0->getType() != Val1->getType())
2235 return Error(ID.Loc, "operands of constexpr must have same type");
2236 if (!Val0->getType()->isIntOrIntVector()) {
2238 return Error(ModifierLoc, "nuw only applies to integer operations");
2240 return Error(ModifierLoc, "nsw only applies to integer operations");
2242 // API compatibility: Accept either integer or floating-point types with
2243 // add, sub, and mul.
2244 if (!Val0->getType()->isIntOrIntVector() &&
2245 !Val0->getType()->isFPOrFPVector())
2246 return Error(ID.Loc,"constexpr requires integer, fp, or vector operands");
2248 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2249 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2250 if (Exact) Flags |= SDivOperator::IsExact;
2251 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2253 ID.Kind = ValID::t_Constant;
2257 // Logical Operations
2259 case lltok::kw_lshr:
2260 case lltok::kw_ashr:
2263 case lltok::kw_xor: {
2264 unsigned Opc = Lex.getUIntVal();
2265 Constant *Val0, *Val1;
2267 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2268 ParseGlobalTypeAndValue(Val0) ||
2269 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2270 ParseGlobalTypeAndValue(Val1) ||
2271 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2273 if (Val0->getType() != Val1->getType())
2274 return Error(ID.Loc, "operands of constexpr must have same type");
2275 if (!Val0->getType()->isIntOrIntVector())
2276 return Error(ID.Loc,
2277 "constexpr requires integer or integer vector operands");
2278 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2279 ID.Kind = ValID::t_Constant;
2283 case lltok::kw_getelementptr:
2284 case lltok::kw_shufflevector:
2285 case lltok::kw_insertelement:
2286 case lltok::kw_extractelement:
2287 case lltok::kw_select: {
2288 unsigned Opc = Lex.getUIntVal();
2289 SmallVector<Constant*, 16> Elts;
2290 bool InBounds = false;
2292 if (Opc == Instruction::GetElementPtr)
2293 InBounds = EatIfPresent(lltok::kw_inbounds);
2294 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2295 ParseGlobalValueVector(Elts) ||
2296 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2299 if (Opc == Instruction::GetElementPtr) {
2300 if (Elts.size() == 0 || !isa<PointerType>(Elts[0]->getType()))
2301 return Error(ID.Loc, "getelementptr requires pointer operand");
2303 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(),
2304 (Value**)(Elts.data() + 1),
2306 return Error(ID.Loc, "invalid indices for getelementptr");
2307 ID.ConstantVal = InBounds ?
2308 ConstantExpr::getInBoundsGetElementPtr(Elts[0],
2311 ConstantExpr::getGetElementPtr(Elts[0],
2312 Elts.data() + 1, Elts.size() - 1);
2313 } else if (Opc == Instruction::Select) {
2314 if (Elts.size() != 3)
2315 return Error(ID.Loc, "expected three operands to select");
2316 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2318 return Error(ID.Loc, Reason);
2319 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2320 } else if (Opc == Instruction::ShuffleVector) {
2321 if (Elts.size() != 3)
2322 return Error(ID.Loc, "expected three operands to shufflevector");
2323 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2324 return Error(ID.Loc, "invalid operands to shufflevector");
2326 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2327 } else if (Opc == Instruction::ExtractElement) {
2328 if (Elts.size() != 2)
2329 return Error(ID.Loc, "expected two operands to extractelement");
2330 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2331 return Error(ID.Loc, "invalid extractelement operands");
2332 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2334 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2335 if (Elts.size() != 3)
2336 return Error(ID.Loc, "expected three operands to insertelement");
2337 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2338 return Error(ID.Loc, "invalid insertelement operands");
2340 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2343 ID.Kind = ValID::t_Constant;
2352 /// ParseGlobalValue - Parse a global value with the specified type.
2353 bool LLParser::ParseGlobalValue(const Type *Ty, Constant *&V) {
2356 return ParseValID(ID) ||
2357 ConvertGlobalValIDToValue(Ty, ID, V);
2360 /// ConvertGlobalValIDToValue - Apply a type to a ValID to get a fully resolved
2362 bool LLParser::ConvertGlobalValIDToValue(const Type *Ty, ValID &ID,
2364 if (isa<FunctionType>(Ty))
2365 return Error(ID.Loc, "functions are not values, refer to them as pointers");
2368 default: llvm_unreachable("Unknown ValID!");
2369 case ValID::t_MDNode:
2370 case ValID::t_MDString:
2371 return Error(ID.Loc, "invalid use of metadata");
2372 case ValID::t_LocalID:
2373 case ValID::t_LocalName:
2374 return Error(ID.Loc, "invalid use of function-local name");
2375 case ValID::t_InlineAsm:
2376 return Error(ID.Loc, "inline asm can only be an operand of call/invoke");
2377 case ValID::t_GlobalName:
2378 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
2380 case ValID::t_GlobalID:
2381 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
2383 case ValID::t_APSInt:
2384 if (!isa<IntegerType>(Ty))
2385 return Error(ID.Loc, "integer constant must have integer type");
2386 ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
2387 V = ConstantInt::get(Context, ID.APSIntVal);
2389 case ValID::t_APFloat:
2390 if (!Ty->isFloatingPoint() ||
2391 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
2392 return Error(ID.Loc, "floating point constant invalid for type");
2394 // The lexer has no type info, so builds all float and double FP constants
2395 // as double. Fix this here. Long double does not need this.
2396 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble &&
2399 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
2402 V = ConstantFP::get(Context, ID.APFloatVal);
2404 if (V->getType() != Ty)
2405 return Error(ID.Loc, "floating point constant does not have type '" +
2406 Ty->getDescription() + "'");
2410 if (!isa<PointerType>(Ty))
2411 return Error(ID.Loc, "null must be a pointer type");
2412 V = ConstantPointerNull::get(cast<PointerType>(Ty));
2414 case ValID::t_Undef:
2415 // FIXME: LabelTy should not be a first-class type.
2416 if ((!Ty->isFirstClassType() || Ty->isLabelTy()) &&
2417 !isa<OpaqueType>(Ty))
2418 return Error(ID.Loc, "invalid type for undef constant");
2419 V = UndefValue::get(Ty);
2421 case ValID::t_EmptyArray:
2422 if (!isa<ArrayType>(Ty) || cast<ArrayType>(Ty)->getNumElements() != 0)
2423 return Error(ID.Loc, "invalid empty array initializer");
2424 V = UndefValue::get(Ty);
2427 // FIXME: LabelTy should not be a first-class type.
2428 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2429 return Error(ID.Loc, "invalid type for null constant");
2430 V = Constant::getNullValue(Ty);
2432 case ValID::t_Constant:
2433 if (ID.ConstantVal->getType() != Ty)
2434 return Error(ID.Loc, "constant expression type mismatch");
2440 /// ConvertGlobalOrMetadataValIDToValue - Apply a type to a ValID to get a fully
2441 /// resolved constant or metadata value.
2442 bool LLParser::ConvertGlobalOrMetadataValIDToValue(const Type *Ty, ValID &ID,
2445 case ValID::t_MDNode:
2446 if (!Ty->isMetadataTy())
2447 return Error(ID.Loc, "metadata value must have metadata type");
2450 case ValID::t_MDString:
2451 if (!Ty->isMetadataTy())
2452 return Error(ID.Loc, "metadata value must have metadata type");
2457 if (ConvertGlobalValIDToValue(Ty, ID, C)) return true;
2464 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2465 PATypeHolder Type(Type::getVoidTy(Context));
2466 return ParseType(Type) ||
2467 ParseGlobalValue(Type, V);
2470 /// ParseGlobalValueVector
2472 /// ::= TypeAndValue (',' TypeAndValue)*
2473 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts) {
2475 if (Lex.getKind() == lltok::rbrace ||
2476 Lex.getKind() == lltok::rsquare ||
2477 Lex.getKind() == lltok::greater ||
2478 Lex.getKind() == lltok::rparen)
2482 if (ParseGlobalTypeAndValue(C)) return true;
2485 while (EatIfPresent(lltok::comma)) {
2486 if (ParseGlobalTypeAndValue(C)) return true;
2494 //===----------------------------------------------------------------------===//
2495 // Function Parsing.
2496 //===----------------------------------------------------------------------===//
2498 bool LLParser::ConvertValIDToValue(const Type *Ty, ValID &ID, Value *&V,
2499 PerFunctionState &PFS) {
2501 case ValID::t_LocalID: V = PFS.GetVal(ID.UIntVal, Ty, ID.Loc); break;
2502 case ValID::t_LocalName: V = PFS.GetVal(ID.StrVal, Ty, ID.Loc); break;
2503 case ValID::t_InlineAsm: {
2504 const PointerType *PTy = dyn_cast<PointerType>(Ty);
2505 const FunctionType *FTy =
2506 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
2507 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
2508 return Error(ID.Loc, "invalid type for inline asm constraint string");
2509 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1, ID.UIntVal>>1);
2513 return ConvertGlobalOrMetadataValIDToValue(Ty, ID, V);
2519 bool LLParser::ParseValue(const Type *Ty, Value *&V, PerFunctionState &PFS) {
2522 return ParseValID(ID) ||
2523 ConvertValIDToValue(Ty, ID, V, PFS);
2526 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState &PFS) {
2527 PATypeHolder T(Type::getVoidTy(Context));
2528 return ParseType(T) ||
2529 ParseValue(T, V, PFS);
2532 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
2533 PerFunctionState &PFS) {
2536 if (ParseTypeAndValue(V, PFS)) return true;
2537 if (!isa<BasicBlock>(V))
2538 return Error(Loc, "expected a basic block");
2539 BB = cast<BasicBlock>(V);
2545 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
2546 /// Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
2547 /// OptionalAlign OptGC
2548 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
2549 // Parse the linkage.
2550 LocTy LinkageLoc = Lex.getLoc();
2553 unsigned Visibility, RetAttrs;
2555 PATypeHolder RetType(Type::getVoidTy(Context));
2556 LocTy RetTypeLoc = Lex.getLoc();
2557 if (ParseOptionalLinkage(Linkage) ||
2558 ParseOptionalVisibility(Visibility) ||
2559 ParseOptionalCallingConv(CC) ||
2560 ParseOptionalAttrs(RetAttrs, 1) ||
2561 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
2564 // Verify that the linkage is ok.
2565 switch ((GlobalValue::LinkageTypes)Linkage) {
2566 case GlobalValue::ExternalLinkage:
2567 break; // always ok.
2568 case GlobalValue::DLLImportLinkage:
2569 case GlobalValue::ExternalWeakLinkage:
2571 return Error(LinkageLoc, "invalid linkage for function definition");
2573 case GlobalValue::PrivateLinkage:
2574 case GlobalValue::LinkerPrivateLinkage:
2575 case GlobalValue::InternalLinkage:
2576 case GlobalValue::AvailableExternallyLinkage:
2577 case GlobalValue::LinkOnceAnyLinkage:
2578 case GlobalValue::LinkOnceODRLinkage:
2579 case GlobalValue::WeakAnyLinkage:
2580 case GlobalValue::WeakODRLinkage:
2581 case GlobalValue::DLLExportLinkage:
2583 return Error(LinkageLoc, "invalid linkage for function declaration");
2585 case GlobalValue::AppendingLinkage:
2586 case GlobalValue::GhostLinkage:
2587 case GlobalValue::CommonLinkage:
2588 return Error(LinkageLoc, "invalid function linkage type");
2591 if (!FunctionType::isValidReturnType(RetType) ||
2592 isa<OpaqueType>(RetType))
2593 return Error(RetTypeLoc, "invalid function return type");
2595 LocTy NameLoc = Lex.getLoc();
2597 std::string FunctionName;
2598 if (Lex.getKind() == lltok::GlobalVar) {
2599 FunctionName = Lex.getStrVal();
2600 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
2601 unsigned NameID = Lex.getUIntVal();
2603 if (NameID != NumberedVals.size())
2604 return TokError("function expected to be numbered '%" +
2605 utostr(NumberedVals.size()) + "'");
2607 return TokError("expected function name");
2612 if (Lex.getKind() != lltok::lparen)
2613 return TokError("expected '(' in function argument list");
2615 std::vector<ArgInfo> ArgList;
2618 std::string Section;
2622 if (ParseArgumentList(ArgList, isVarArg, false) ||
2623 ParseOptionalAttrs(FuncAttrs, 2) ||
2624 (EatIfPresent(lltok::kw_section) &&
2625 ParseStringConstant(Section)) ||
2626 ParseOptionalAlignment(Alignment) ||
2627 (EatIfPresent(lltok::kw_gc) &&
2628 ParseStringConstant(GC)))
2631 // If the alignment was parsed as an attribute, move to the alignment field.
2632 if (FuncAttrs & Attribute::Alignment) {
2633 Alignment = Attribute::getAlignmentFromAttrs(FuncAttrs);
2634 FuncAttrs &= ~Attribute::Alignment;
2637 // Okay, if we got here, the function is syntactically valid. Convert types
2638 // and do semantic checks.
2639 std::vector<const Type*> ParamTypeList;
2640 SmallVector<AttributeWithIndex, 8> Attrs;
2641 // FIXME : In 3.0, stop accepting zext, sext and inreg as optional function
2643 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
2644 if (FuncAttrs & ObsoleteFuncAttrs) {
2645 RetAttrs |= FuncAttrs & ObsoleteFuncAttrs;
2646 FuncAttrs &= ~ObsoleteFuncAttrs;
2649 if (RetAttrs != Attribute::None)
2650 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
2652 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2653 ParamTypeList.push_back(ArgList[i].Type);
2654 if (ArgList[i].Attrs != Attribute::None)
2655 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
2658 if (FuncAttrs != Attribute::None)
2659 Attrs.push_back(AttributeWithIndex::get(~0, FuncAttrs));
2661 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
2663 if (PAL.paramHasAttr(1, Attribute::StructRet) && !RetType->isVoidTy())
2664 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
2666 const FunctionType *FT =
2667 FunctionType::get(RetType, ParamTypeList, isVarArg);
2668 const PointerType *PFT = PointerType::getUnqual(FT);
2671 if (!FunctionName.empty()) {
2672 // If this was a definition of a forward reference, remove the definition
2673 // from the forward reference table and fill in the forward ref.
2674 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
2675 ForwardRefVals.find(FunctionName);
2676 if (FRVI != ForwardRefVals.end()) {
2677 Fn = M->getFunction(FunctionName);
2678 ForwardRefVals.erase(FRVI);
2679 } else if ((Fn = M->getFunction(FunctionName))) {
2680 // If this function already exists in the symbol table, then it is
2681 // multiply defined. We accept a few cases for old backwards compat.
2682 // FIXME: Remove this stuff for LLVM 3.0.
2683 if (Fn->getType() != PFT || Fn->getAttributes() != PAL ||
2684 (!Fn->isDeclaration() && isDefine)) {
2685 // If the redefinition has different type or different attributes,
2686 // reject it. If both have bodies, reject it.
2687 return Error(NameLoc, "invalid redefinition of function '" +
2688 FunctionName + "'");
2689 } else if (Fn->isDeclaration()) {
2690 // Make sure to strip off any argument names so we can't get conflicts.
2691 for (Function::arg_iterator AI = Fn->arg_begin(), AE = Fn->arg_end();
2695 } else if (M->getNamedValue(FunctionName)) {
2696 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
2700 // If this is a definition of a forward referenced function, make sure the
2702 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
2703 = ForwardRefValIDs.find(NumberedVals.size());
2704 if (I != ForwardRefValIDs.end()) {
2705 Fn = cast<Function>(I->second.first);
2706 if (Fn->getType() != PFT)
2707 return Error(NameLoc, "type of definition and forward reference of '@" +
2708 utostr(NumberedVals.size()) +"' disagree");
2709 ForwardRefValIDs.erase(I);
2714 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
2715 else // Move the forward-reference to the correct spot in the module.
2716 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
2718 if (FunctionName.empty())
2719 NumberedVals.push_back(Fn);
2721 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
2722 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
2723 Fn->setCallingConv(CC);
2724 Fn->setAttributes(PAL);
2725 Fn->setAlignment(Alignment);
2726 Fn->setSection(Section);
2727 if (!GC.empty()) Fn->setGC(GC.c_str());
2729 // Add all of the arguments we parsed to the function.
2730 Function::arg_iterator ArgIt = Fn->arg_begin();
2731 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
2732 // If we run out of arguments in the Function prototype, exit early.
2733 // FIXME: REMOVE THIS IN LLVM 3.0, this is just for the mismatch case above.
2734 if (ArgIt == Fn->arg_end()) break;
2736 // If the argument has a name, insert it into the argument symbol table.
2737 if (ArgList[i].Name.empty()) continue;
2739 // Set the name, if it conflicted, it will be auto-renamed.
2740 ArgIt->setName(ArgList[i].Name);
2742 if (ArgIt->getNameStr() != ArgList[i].Name)
2743 return Error(ArgList[i].Loc, "redefinition of argument '%" +
2744 ArgList[i].Name + "'");
2751 /// ParseFunctionBody
2752 /// ::= '{' BasicBlock+ '}'
2753 /// ::= 'begin' BasicBlock+ 'end' // FIXME: remove in LLVM 3.0
2755 bool LLParser::ParseFunctionBody(Function &Fn) {
2756 if (Lex.getKind() != lltok::lbrace && Lex.getKind() != lltok::kw_begin)
2757 return TokError("expected '{' in function body");
2758 Lex.Lex(); // eat the {.
2760 int FunctionNumber = -1;
2761 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
2763 PerFunctionState PFS(*this, Fn, FunctionNumber);
2765 while (Lex.getKind() != lltok::rbrace && Lex.getKind() != lltok::kw_end)
2766 if (ParseBasicBlock(PFS)) return true;
2771 // Verify function is ok.
2772 return PFS.FinishFunction();
2776 /// ::= LabelStr? Instruction*
2777 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
2778 // If this basic block starts out with a name, remember it.
2780 LocTy NameLoc = Lex.getLoc();
2781 if (Lex.getKind() == lltok::LabelStr) {
2782 Name = Lex.getStrVal();
2786 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
2787 if (BB == 0) return true;
2789 std::string NameStr;
2791 // Parse the instructions in this block until we get a terminator.
2793 SmallVector<std::pair<unsigned, MDNode *>, 4> MetadataOnInst;
2795 // This instruction may have three possibilities for a name: a) none
2796 // specified, b) name specified "%foo =", c) number specified: "%4 =".
2797 LocTy NameLoc = Lex.getLoc();
2801 if (Lex.getKind() == lltok::LocalVarID) {
2802 NameID = Lex.getUIntVal();
2804 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
2806 } else if (Lex.getKind() == lltok::LocalVar ||
2807 // FIXME: REMOVE IN LLVM 3.0
2808 Lex.getKind() == lltok::StringConstant) {
2809 NameStr = Lex.getStrVal();
2811 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
2815 switch (ParseInstruction(Inst, BB, PFS)) {
2816 default: assert(0 && "Unknown ParseInstruction result!");
2817 case InstError: return true;
2819 // With a normal result, we check to see if the instruction is followed by
2820 // a comma and metadata.
2821 if (EatIfPresent(lltok::comma))
2822 if (ParseInstructionMetadata(MetadataOnInst))
2825 case InstExtraComma:
2826 // If the instruction parser ate an extra comma at the end of it, it
2827 // *must* be followed by metadata.
2828 if (ParseInstructionMetadata(MetadataOnInst))
2833 // Set metadata attached with this instruction.
2834 for (unsigned i = 0, e = MetadataOnInst.size(); i != e; ++i)
2835 Inst->setMetadata(MetadataOnInst[i].first, MetadataOnInst[i].second);
2836 MetadataOnInst.clear();
2838 BB->getInstList().push_back(Inst);
2840 // Set the name on the instruction.
2841 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
2842 } while (!isa<TerminatorInst>(Inst));
2847 //===----------------------------------------------------------------------===//
2848 // Instruction Parsing.
2849 //===----------------------------------------------------------------------===//
2851 /// ParseInstruction - Parse one of the many different instructions.
2853 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
2854 PerFunctionState &PFS) {
2855 lltok::Kind Token = Lex.getKind();
2856 if (Token == lltok::Eof)
2857 return TokError("found end of file when expecting more instructions");
2858 LocTy Loc = Lex.getLoc();
2859 unsigned KeywordVal = Lex.getUIntVal();
2860 Lex.Lex(); // Eat the keyword.
2863 default: return Error(Loc, "expected instruction opcode");
2864 // Terminator Instructions.
2865 case lltok::kw_unwind: Inst = new UnwindInst(Context); return false;
2866 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
2867 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
2868 case lltok::kw_br: return ParseBr(Inst, PFS);
2869 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
2870 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
2871 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
2872 // Binary Operators.
2875 case lltok::kw_mul: {
2878 LocTy ModifierLoc = Lex.getLoc();
2879 if (EatIfPresent(lltok::kw_nuw))
2881 if (EatIfPresent(lltok::kw_nsw)) {
2883 if (EatIfPresent(lltok::kw_nuw))
2886 // API compatibility: Accept either integer or floating-point types.
2887 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 0);
2889 if (!Inst->getType()->isIntOrIntVector()) {
2891 return Error(ModifierLoc, "nuw only applies to integer operations");
2893 return Error(ModifierLoc, "nsw only applies to integer operations");
2896 cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
2898 cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
2902 case lltok::kw_fadd:
2903 case lltok::kw_fsub:
2904 case lltok::kw_fmul: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
2906 case lltok::kw_sdiv: {
2908 if (EatIfPresent(lltok::kw_exact))
2910 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 1);
2913 cast<BinaryOperator>(Inst)->setIsExact(true);
2917 case lltok::kw_udiv:
2918 case lltok::kw_urem:
2919 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
2920 case lltok::kw_fdiv:
2921 case lltok::kw_frem: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
2923 case lltok::kw_lshr:
2924 case lltok::kw_ashr:
2927 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
2928 case lltok::kw_icmp:
2929 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
2931 case lltok::kw_trunc:
2932 case lltok::kw_zext:
2933 case lltok::kw_sext:
2934 case lltok::kw_fptrunc:
2935 case lltok::kw_fpext:
2936 case lltok::kw_bitcast:
2937 case lltok::kw_uitofp:
2938 case lltok::kw_sitofp:
2939 case lltok::kw_fptoui:
2940 case lltok::kw_fptosi:
2941 case lltok::kw_inttoptr:
2942 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
2944 case lltok::kw_select: return ParseSelect(Inst, PFS);
2945 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
2946 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
2947 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
2948 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
2949 case lltok::kw_phi: return ParsePHI(Inst, PFS);
2950 case lltok::kw_call: return ParseCall(Inst, PFS, false);
2951 case lltok::kw_tail: return ParseCall(Inst, PFS, true);
2953 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
2954 case lltok::kw_malloc: return ParseAlloc(Inst, PFS, BB, false);
2955 case lltok::kw_free: return ParseFree(Inst, PFS, BB);
2956 case lltok::kw_load: return ParseLoad(Inst, PFS, false);
2957 case lltok::kw_store: return ParseStore(Inst, PFS, false);
2958 case lltok::kw_volatile:
2959 if (EatIfPresent(lltok::kw_load))
2960 return ParseLoad(Inst, PFS, true);
2961 else if (EatIfPresent(lltok::kw_store))
2962 return ParseStore(Inst, PFS, true);
2964 return TokError("expected 'load' or 'store'");
2965 case lltok::kw_getresult: return ParseGetResult(Inst, PFS);
2966 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
2967 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
2968 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
2972 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
2973 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
2974 if (Opc == Instruction::FCmp) {
2975 switch (Lex.getKind()) {
2976 default: TokError("expected fcmp predicate (e.g. 'oeq')");
2977 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
2978 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
2979 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
2980 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
2981 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
2982 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
2983 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
2984 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
2985 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
2986 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
2987 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
2988 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
2989 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
2990 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
2991 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
2992 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
2995 switch (Lex.getKind()) {
2996 default: TokError("expected icmp predicate (e.g. 'eq')");
2997 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
2998 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
2999 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
3000 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
3001 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
3002 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
3003 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
3004 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
3005 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
3006 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3013 //===----------------------------------------------------------------------===//
3014 // Terminator Instructions.
3015 //===----------------------------------------------------------------------===//
3017 /// ParseRet - Parse a return instruction.
3018 /// ::= 'ret' void (',' !dbg, !1)*
3019 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
3020 /// ::= 'ret' TypeAndValue (',' TypeAndValue)+ (',' !dbg, !1)*
3021 /// [[obsolete: LLVM 3.0]]
3022 int LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3023 PerFunctionState &PFS) {
3024 PATypeHolder Ty(Type::getVoidTy(Context));
3025 if (ParseType(Ty, true /*void allowed*/)) return true;
3027 if (Ty->isVoidTy()) {
3028 Inst = ReturnInst::Create(Context);
3033 if (ParseValue(Ty, RV, PFS)) return true;
3035 bool ExtraComma = false;
3036 if (EatIfPresent(lltok::comma)) {
3037 // Parse optional custom metadata, e.g. !dbg
3038 if (Lex.getKind() == lltok::MetadataVar) {
3041 // The normal case is one return value.
3042 // FIXME: LLVM 3.0 remove MRV support for 'ret i32 1, i32 2', requiring
3043 // use of 'ret {i32,i32} {i32 1, i32 2}'
3044 SmallVector<Value*, 8> RVs;
3048 // If optional custom metadata, e.g. !dbg is seen then this is the
3050 if (Lex.getKind() == lltok::MetadataVar)
3052 if (ParseTypeAndValue(RV, PFS)) return true;
3054 } while (EatIfPresent(lltok::comma));
3056 RV = UndefValue::get(PFS.getFunction().getReturnType());
3057 for (unsigned i = 0, e = RVs.size(); i != e; ++i) {
3058 Instruction *I = InsertValueInst::Create(RV, RVs[i], i, "mrv");
3059 BB->getInstList().push_back(I);
3065 Inst = ReturnInst::Create(Context, RV);
3066 return ExtraComma ? InstExtraComma : InstNormal;
3071 /// ::= 'br' TypeAndValue
3072 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3073 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
3076 BasicBlock *Op1, *Op2;
3077 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
3079 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
3080 Inst = BranchInst::Create(BB);
3084 if (Op0->getType() != Type::getInt1Ty(Context))
3085 return Error(Loc, "branch condition must have 'i1' type");
3087 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
3088 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
3089 ParseToken(lltok::comma, "expected ',' after true destination") ||
3090 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
3093 Inst = BranchInst::Create(Op1, Op2, Op0);
3099 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
3101 /// ::= (TypeAndValue ',' TypeAndValue)*
3102 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
3103 LocTy CondLoc, BBLoc;
3105 BasicBlock *DefaultBB;
3106 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
3107 ParseToken(lltok::comma, "expected ',' after switch condition") ||
3108 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
3109 ParseToken(lltok::lsquare, "expected '[' with switch table"))
3112 if (!isa<IntegerType>(Cond->getType()))
3113 return Error(CondLoc, "switch condition must have integer type");
3115 // Parse the jump table pairs.
3116 SmallPtrSet<Value*, 32> SeenCases;
3117 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
3118 while (Lex.getKind() != lltok::rsquare) {
3122 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
3123 ParseToken(lltok::comma, "expected ',' after case value") ||
3124 ParseTypeAndBasicBlock(DestBB, PFS))
3127 if (!SeenCases.insert(Constant))
3128 return Error(CondLoc, "duplicate case value in switch");
3129 if (!isa<ConstantInt>(Constant))
3130 return Error(CondLoc, "case value is not a constant integer");
3132 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
3135 Lex.Lex(); // Eat the ']'.
3137 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
3138 for (unsigned i = 0, e = Table.size(); i != e; ++i)
3139 SI->addCase(Table[i].first, Table[i].second);
3146 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
3147 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
3150 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
3151 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
3152 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
3155 if (!isa<PointerType>(Address->getType()))
3156 return Error(AddrLoc, "indirectbr address must have pointer type");
3158 // Parse the destination list.
3159 SmallVector<BasicBlock*, 16> DestList;
3161 if (Lex.getKind() != lltok::rsquare) {
3163 if (ParseTypeAndBasicBlock(DestBB, PFS))
3165 DestList.push_back(DestBB);
3167 while (EatIfPresent(lltok::comma)) {
3168 if (ParseTypeAndBasicBlock(DestBB, PFS))
3170 DestList.push_back(DestBB);
3174 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
3177 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
3178 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
3179 IBI->addDestination(DestList[i]);
3186 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3187 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3188 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3189 LocTy CallLoc = Lex.getLoc();
3190 unsigned RetAttrs, FnAttrs;
3192 PATypeHolder RetType(Type::getVoidTy(Context));
3195 SmallVector<ParamInfo, 16> ArgList;
3197 BasicBlock *NormalBB, *UnwindBB;
3198 if (ParseOptionalCallingConv(CC) ||
3199 ParseOptionalAttrs(RetAttrs, 1) ||
3200 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3201 ParseValID(CalleeID) ||
3202 ParseParameterList(ArgList, PFS) ||
3203 ParseOptionalAttrs(FnAttrs, 2) ||
3204 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3205 ParseTypeAndBasicBlock(NormalBB, PFS) ||
3206 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3207 ParseTypeAndBasicBlock(UnwindBB, PFS))
3210 // If RetType is a non-function pointer type, then this is the short syntax
3211 // for the call, which means that RetType is just the return type. Infer the
3212 // rest of the function argument types from the arguments that are present.
3213 const PointerType *PFTy = 0;
3214 const FunctionType *Ty = 0;
3215 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3216 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3217 // Pull out the types of all of the arguments...
3218 std::vector<const Type*> ParamTypes;
3219 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3220 ParamTypes.push_back(ArgList[i].V->getType());
3222 if (!FunctionType::isValidReturnType(RetType))
3223 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3225 Ty = FunctionType::get(RetType, ParamTypes, false);
3226 PFTy = PointerType::getUnqual(Ty);
3229 // Look up the callee.
3231 if (ConvertValIDToValue(PFTy, CalleeID, Callee, PFS)) return true;
3233 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
3234 // function attributes.
3235 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
3236 if (FnAttrs & ObsoleteFuncAttrs) {
3237 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
3238 FnAttrs &= ~ObsoleteFuncAttrs;
3241 // Set up the Attributes for the function.
3242 SmallVector<AttributeWithIndex, 8> Attrs;
3243 if (RetAttrs != Attribute::None)
3244 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3246 SmallVector<Value*, 8> Args;
3248 // Loop through FunctionType's arguments and ensure they are specified
3249 // correctly. Also, gather any parameter attributes.
3250 FunctionType::param_iterator I = Ty->param_begin();
3251 FunctionType::param_iterator E = Ty->param_end();
3252 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3253 const Type *ExpectedTy = 0;
3256 } else if (!Ty->isVarArg()) {
3257 return Error(ArgList[i].Loc, "too many arguments specified");
3260 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3261 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3262 ExpectedTy->getDescription() + "'");
3263 Args.push_back(ArgList[i].V);
3264 if (ArgList[i].Attrs != Attribute::None)
3265 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3269 return Error(CallLoc, "not enough parameters specified for call");
3271 if (FnAttrs != Attribute::None)
3272 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3274 // Finish off the Attributes and check them
3275 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3277 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB,
3278 Args.begin(), Args.end());
3279 II->setCallingConv(CC);
3280 II->setAttributes(PAL);
3287 //===----------------------------------------------------------------------===//
3288 // Binary Operators.
3289 //===----------------------------------------------------------------------===//
3292 /// ::= ArithmeticOps TypeAndValue ',' Value
3294 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3295 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3296 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3297 unsigned Opc, unsigned OperandType) {
3298 LocTy Loc; Value *LHS, *RHS;
3299 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3300 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3301 ParseValue(LHS->getType(), RHS, PFS))
3305 switch (OperandType) {
3306 default: llvm_unreachable("Unknown operand type!");
3307 case 0: // int or FP.
3308 Valid = LHS->getType()->isIntOrIntVector() ||
3309 LHS->getType()->isFPOrFPVector();
3311 case 1: Valid = LHS->getType()->isIntOrIntVector(); break;
3312 case 2: Valid = LHS->getType()->isFPOrFPVector(); break;
3316 return Error(Loc, "invalid operand type for instruction");
3318 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3323 /// ::= ArithmeticOps TypeAndValue ',' Value {
3324 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3326 LocTy Loc; Value *LHS, *RHS;
3327 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3328 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3329 ParseValue(LHS->getType(), RHS, PFS))
3332 if (!LHS->getType()->isIntOrIntVector())
3333 return Error(Loc,"instruction requires integer or integer vector operands");
3335 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3341 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3342 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3343 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3345 // Parse the integer/fp comparison predicate.
3349 if (ParseCmpPredicate(Pred, Opc) ||
3350 ParseTypeAndValue(LHS, Loc, PFS) ||
3351 ParseToken(lltok::comma, "expected ',' after compare value") ||
3352 ParseValue(LHS->getType(), RHS, PFS))
3355 if (Opc == Instruction::FCmp) {
3356 if (!LHS->getType()->isFPOrFPVector())
3357 return Error(Loc, "fcmp requires floating point operands");
3358 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3360 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
3361 if (!LHS->getType()->isIntOrIntVector() &&
3362 !isa<PointerType>(LHS->getType()))
3363 return Error(Loc, "icmp requires integer operands");
3364 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3369 //===----------------------------------------------------------------------===//
3370 // Other Instructions.
3371 //===----------------------------------------------------------------------===//
3375 /// ::= CastOpc TypeAndValue 'to' Type
3376 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
3378 LocTy Loc; Value *Op;
3379 PATypeHolder DestTy(Type::getVoidTy(Context));
3380 if (ParseTypeAndValue(Op, Loc, PFS) ||
3381 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
3385 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
3386 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
3387 return Error(Loc, "invalid cast opcode for cast from '" +
3388 Op->getType()->getDescription() + "' to '" +
3389 DestTy->getDescription() + "'");
3391 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
3396 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3397 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
3399 Value *Op0, *Op1, *Op2;
3400 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3401 ParseToken(lltok::comma, "expected ',' after select condition") ||
3402 ParseTypeAndValue(Op1, PFS) ||
3403 ParseToken(lltok::comma, "expected ',' after select value") ||
3404 ParseTypeAndValue(Op2, PFS))
3407 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
3408 return Error(Loc, Reason);
3410 Inst = SelectInst::Create(Op0, Op1, Op2);
3415 /// ::= 'va_arg' TypeAndValue ',' Type
3416 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
3418 PATypeHolder EltTy(Type::getVoidTy(Context));
3420 if (ParseTypeAndValue(Op, PFS) ||
3421 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
3422 ParseType(EltTy, TypeLoc))
3425 if (!EltTy->isFirstClassType())
3426 return Error(TypeLoc, "va_arg requires operand with first class type");
3428 Inst = new VAArgInst(Op, EltTy);
3432 /// ParseExtractElement
3433 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
3434 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
3437 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3438 ParseToken(lltok::comma, "expected ',' after extract value") ||
3439 ParseTypeAndValue(Op1, PFS))
3442 if (!ExtractElementInst::isValidOperands(Op0, Op1))
3443 return Error(Loc, "invalid extractelement operands");
3445 Inst = ExtractElementInst::Create(Op0, Op1);
3449 /// ParseInsertElement
3450 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3451 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
3453 Value *Op0, *Op1, *Op2;
3454 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3455 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3456 ParseTypeAndValue(Op1, PFS) ||
3457 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3458 ParseTypeAndValue(Op2, PFS))
3461 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
3462 return Error(Loc, "invalid insertelement operands");
3464 Inst = InsertElementInst::Create(Op0, Op1, Op2);
3468 /// ParseShuffleVector
3469 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3470 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
3472 Value *Op0, *Op1, *Op2;
3473 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3474 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
3475 ParseTypeAndValue(Op1, PFS) ||
3476 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
3477 ParseTypeAndValue(Op2, PFS))
3480 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
3481 return Error(Loc, "invalid extractelement operands");
3483 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
3488 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
3489 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
3490 PATypeHolder Ty(Type::getVoidTy(Context));
3492 LocTy TypeLoc = Lex.getLoc();
3494 if (ParseType(Ty) ||
3495 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3496 ParseValue(Ty, Op0, PFS) ||
3497 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3498 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3499 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3502 bool AteExtraComma = false;
3503 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
3505 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
3507 if (!EatIfPresent(lltok::comma))
3510 if (Lex.getKind() == lltok::MetadataVar) {
3511 AteExtraComma = true;
3515 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3516 ParseValue(Ty, Op0, PFS) ||
3517 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3518 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3519 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3523 if (!Ty->isFirstClassType())
3524 return Error(TypeLoc, "phi node must have first class type");
3526 PHINode *PN = PHINode::Create(Ty);
3527 PN->reserveOperandSpace(PHIVals.size());
3528 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
3529 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
3531 return AteExtraComma ? InstExtraComma : InstNormal;
3535 /// ::= 'tail'? 'call' OptionalCallingConv OptionalAttrs Type Value
3536 /// ParameterList OptionalAttrs
3537 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
3539 unsigned RetAttrs, FnAttrs;
3541 PATypeHolder RetType(Type::getVoidTy(Context));
3544 SmallVector<ParamInfo, 16> ArgList;
3545 LocTy CallLoc = Lex.getLoc();
3547 if ((isTail && ParseToken(lltok::kw_call, "expected 'tail call'")) ||
3548 ParseOptionalCallingConv(CC) ||
3549 ParseOptionalAttrs(RetAttrs, 1) ||
3550 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3551 ParseValID(CalleeID) ||
3552 ParseParameterList(ArgList, PFS) ||
3553 ParseOptionalAttrs(FnAttrs, 2))
3556 // If RetType is a non-function pointer type, then this is the short syntax
3557 // for the call, which means that RetType is just the return type. Infer the
3558 // rest of the function argument types from the arguments that are present.
3559 const PointerType *PFTy = 0;
3560 const FunctionType *Ty = 0;
3561 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3562 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3563 // Pull out the types of all of the arguments...
3564 std::vector<const Type*> ParamTypes;
3565 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3566 ParamTypes.push_back(ArgList[i].V->getType());
3568 if (!FunctionType::isValidReturnType(RetType))
3569 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3571 Ty = FunctionType::get(RetType, ParamTypes, false);
3572 PFTy = PointerType::getUnqual(Ty);
3575 // Look up the callee.
3577 if (ConvertValIDToValue(PFTy, CalleeID, Callee, PFS)) return true;
3579 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
3580 // function attributes.
3581 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
3582 if (FnAttrs & ObsoleteFuncAttrs) {
3583 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
3584 FnAttrs &= ~ObsoleteFuncAttrs;
3587 // Set up the Attributes for the function.
3588 SmallVector<AttributeWithIndex, 8> Attrs;
3589 if (RetAttrs != Attribute::None)
3590 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3592 SmallVector<Value*, 8> Args;
3594 // Loop through FunctionType's arguments and ensure they are specified
3595 // correctly. Also, gather any parameter attributes.
3596 FunctionType::param_iterator I = Ty->param_begin();
3597 FunctionType::param_iterator E = Ty->param_end();
3598 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3599 const Type *ExpectedTy = 0;
3602 } else if (!Ty->isVarArg()) {
3603 return Error(ArgList[i].Loc, "too many arguments specified");
3606 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3607 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3608 ExpectedTy->getDescription() + "'");
3609 Args.push_back(ArgList[i].V);
3610 if (ArgList[i].Attrs != Attribute::None)
3611 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3615 return Error(CallLoc, "not enough parameters specified for call");
3617 if (FnAttrs != Attribute::None)
3618 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3620 // Finish off the Attributes and check them
3621 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3623 CallInst *CI = CallInst::Create(Callee, Args.begin(), Args.end());
3624 CI->setTailCall(isTail);
3625 CI->setCallingConv(CC);
3626 CI->setAttributes(PAL);
3631 //===----------------------------------------------------------------------===//
3632 // Memory Instructions.
3633 //===----------------------------------------------------------------------===//
3636 /// ::= 'malloc' Type (',' TypeAndValue)? (',' OptionalInfo)?
3637 /// ::= 'alloca' Type (',' TypeAndValue)? (',' OptionalInfo)?
3638 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS,
3639 BasicBlock* BB, bool isAlloca) {
3640 PATypeHolder Ty(Type::getVoidTy(Context));
3643 unsigned Alignment = 0;
3644 if (ParseType(Ty)) return true;
3646 bool AteExtraComma = false;
3647 if (EatIfPresent(lltok::comma)) {
3648 if (Lex.getKind() == lltok::kw_align) {
3649 if (ParseOptionalAlignment(Alignment)) return true;
3650 } else if (Lex.getKind() == lltok::MetadataVar) {
3651 AteExtraComma = true;
3653 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
3654 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3659 if (Size && !Size->getType()->isInteger(32))
3660 return Error(SizeLoc, "element count must be i32");
3663 Inst = new AllocaInst(Ty, Size, Alignment);
3664 return AteExtraComma ? InstExtraComma : InstNormal;
3667 // Autoupgrade old malloc instruction to malloc call.
3668 // FIXME: Remove in LLVM 3.0.
3669 const Type *IntPtrTy = Type::getInt32Ty(Context);
3670 Constant *AllocSize = ConstantExpr::getSizeOf(Ty);
3671 AllocSize = ConstantExpr::getTruncOrBitCast(AllocSize, IntPtrTy);
3673 // Prototype malloc as "void *(int32)".
3674 // This function is renamed as "malloc" in ValidateEndOfModule().
3675 MallocF = cast<Function>(
3676 M->getOrInsertFunction("", Type::getInt8PtrTy(Context), IntPtrTy, NULL));
3677 Inst = CallInst::CreateMalloc(BB, IntPtrTy, Ty, AllocSize, Size, MallocF);
3678 return AteExtraComma ? InstExtraComma : InstNormal;
3682 /// ::= 'free' TypeAndValue
3683 bool LLParser::ParseFree(Instruction *&Inst, PerFunctionState &PFS,
3685 Value *Val; LocTy Loc;
3686 if (ParseTypeAndValue(Val, Loc, PFS)) return true;
3687 if (!isa<PointerType>(Val->getType()))
3688 return Error(Loc, "operand to free must be a pointer");
3689 Inst = CallInst::CreateFree(Val, BB);
3694 /// ::= 'volatile'? 'load' TypeAndValue (',' OptionalInfo)?
3695 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS,
3697 Value *Val; LocTy Loc;
3698 unsigned Alignment = 0;
3699 bool AteExtraComma = false;
3700 if (ParseTypeAndValue(Val, Loc, PFS) ||
3701 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3704 if (!isa<PointerType>(Val->getType()) ||
3705 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
3706 return Error(Loc, "load operand must be a pointer to a first class type");
3708 Inst = new LoadInst(Val, "", isVolatile, Alignment);
3709 return AteExtraComma ? InstExtraComma : InstNormal;
3713 /// ::= 'volatile'? 'store' TypeAndValue ',' TypeAndValue (',' 'align' i32)?
3714 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS,
3716 Value *Val, *Ptr; LocTy Loc, PtrLoc;
3717 unsigned Alignment = 0;
3718 bool AteExtraComma = false;
3719 if (ParseTypeAndValue(Val, Loc, PFS) ||
3720 ParseToken(lltok::comma, "expected ',' after store operand") ||
3721 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
3722 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3725 if (!isa<PointerType>(Ptr->getType()))
3726 return Error(PtrLoc, "store operand must be a pointer");
3727 if (!Val->getType()->isFirstClassType())
3728 return Error(Loc, "store operand must be a first class value");
3729 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
3730 return Error(Loc, "stored value and pointer type do not match");
3732 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment);
3733 return AteExtraComma ? InstExtraComma : InstNormal;
3737 /// ::= 'getresult' TypeAndValue ',' i32
3738 /// FIXME: Remove support for getresult in LLVM 3.0
3739 bool LLParser::ParseGetResult(Instruction *&Inst, PerFunctionState &PFS) {
3740 Value *Val; LocTy ValLoc, EltLoc;
3742 if (ParseTypeAndValue(Val, ValLoc, PFS) ||
3743 ParseToken(lltok::comma, "expected ',' after getresult operand") ||
3744 ParseUInt32(Element, EltLoc))
3747 if (!isa<StructType>(Val->getType()) && !isa<ArrayType>(Val->getType()))
3748 return Error(ValLoc, "getresult inst requires an aggregate operand");
3749 if (!ExtractValueInst::getIndexedType(Val->getType(), Element))
3750 return Error(EltLoc, "invalid getresult index for value");
3751 Inst = ExtractValueInst::Create(Val, Element);
3755 /// ParseGetElementPtr
3756 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
3757 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
3758 Value *Ptr, *Val; LocTy Loc, EltLoc;
3760 bool InBounds = EatIfPresent(lltok::kw_inbounds);
3762 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
3764 if (!isa<PointerType>(Ptr->getType()))
3765 return Error(Loc, "base of getelementptr must be a pointer");
3767 SmallVector<Value*, 16> Indices;
3768 bool AteExtraComma = false;
3769 while (EatIfPresent(lltok::comma)) {
3770 if (Lex.getKind() == lltok::MetadataVar) {
3771 AteExtraComma = true;
3774 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
3775 if (!isa<IntegerType>(Val->getType()))
3776 return Error(EltLoc, "getelementptr index must be an integer");
3777 Indices.push_back(Val);
3780 if (!GetElementPtrInst::getIndexedType(Ptr->getType(),
3781 Indices.begin(), Indices.end()))
3782 return Error(Loc, "invalid getelementptr indices");
3783 Inst = GetElementPtrInst::Create(Ptr, Indices.begin(), Indices.end());
3785 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
3786 return AteExtraComma ? InstExtraComma : InstNormal;
3789 /// ParseExtractValue
3790 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
3791 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
3792 Value *Val; LocTy Loc;
3793 SmallVector<unsigned, 4> Indices;
3795 if (ParseTypeAndValue(Val, Loc, PFS) ||
3796 ParseIndexList(Indices, AteExtraComma))
3799 if (!isa<StructType>(Val->getType()) && !isa<ArrayType>(Val->getType()))
3800 return Error(Loc, "extractvalue operand must be array or struct");
3802 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
3804 return Error(Loc, "invalid indices for extractvalue");
3805 Inst = ExtractValueInst::Create(Val, Indices.begin(), Indices.end());
3806 return AteExtraComma ? InstExtraComma : InstNormal;
3809 /// ParseInsertValue
3810 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
3811 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
3812 Value *Val0, *Val1; LocTy Loc0, Loc1;
3813 SmallVector<unsigned, 4> Indices;
3815 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
3816 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
3817 ParseTypeAndValue(Val1, Loc1, PFS) ||
3818 ParseIndexList(Indices, AteExtraComma))
3821 if (!isa<StructType>(Val0->getType()) && !isa<ArrayType>(Val0->getType()))
3822 return Error(Loc0, "extractvalue operand must be array or struct");
3824 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
3826 return Error(Loc0, "invalid indices for insertvalue");
3827 Inst = InsertValueInst::Create(Val0, Val1, Indices.begin(), Indices.end());
3828 return AteExtraComma ? InstExtraComma : InstNormal;
3831 //===----------------------------------------------------------------------===//
3832 // Embedded metadata.
3833 //===----------------------------------------------------------------------===//
3835 /// ParseMDNodeVector
3836 /// ::= Element (',' Element)*
3838 /// ::= 'null' | TypeAndValue
3839 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts) {
3841 // Null is a special case since it is typeless.
3842 if (EatIfPresent(lltok::kw_null)) {
3848 PATypeHolder Ty(Type::getVoidTy(Context));
3850 if (ParseType(Ty) || ParseValID(ID) ||
3851 ConvertGlobalOrMetadataValIDToValue(Ty, ID, V))
3855 } while (EatIfPresent(lltok::comma));