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/Support/ErrorHandling.h"
26 #include "llvm/Support/raw_ostream.h"
29 /// Run: module ::= toplevelentity*
30 bool LLParser::Run() {
34 return ParseTopLevelEntities() ||
35 ValidateEndOfModule();
38 /// ValidateEndOfModule - Do final validity and sanity checks at the end of the
40 bool LLParser::ValidateEndOfModule() {
41 // Handle any instruction metadata forward references.
42 if (!ForwardRefInstMetadata.empty()) {
43 for (DenseMap<Instruction*, std::vector<MDRef> >::iterator
44 I = ForwardRefInstMetadata.begin(), E = ForwardRefInstMetadata.end();
46 Instruction *Inst = I->first;
47 const std::vector<MDRef> &MDList = I->second;
49 for (unsigned i = 0, e = MDList.size(); i != e; ++i) {
50 unsigned SlotNo = MDList[i].MDSlot;
52 if (SlotNo >= NumberedMetadata.size() || NumberedMetadata[SlotNo] == 0)
53 return Error(MDList[i].Loc, "use of undefined metadata '!" +
55 Inst->setMetadata(MDList[i].MDKind, NumberedMetadata[SlotNo]);
58 ForwardRefInstMetadata.clear();
62 // Update auto-upgraded malloc calls to "malloc".
63 // FIXME: Remove in LLVM 3.0.
65 MallocF->setName("malloc");
66 // If setName() does not set the name to "malloc", then there is already a
67 // declaration of "malloc". In that case, iterate over all calls to MallocF
68 // and get them to call the declared "malloc" instead.
69 if (MallocF->getName() != "malloc") {
70 Constant *RealMallocF = M->getFunction("malloc");
71 if (RealMallocF->getType() != MallocF->getType())
72 RealMallocF = ConstantExpr::getBitCast(RealMallocF, MallocF->getType());
73 MallocF->replaceAllUsesWith(RealMallocF);
74 MallocF->eraseFromParent();
80 // If there are entries in ForwardRefBlockAddresses at this point, they are
81 // references after the function was defined. Resolve those now.
82 while (!ForwardRefBlockAddresses.empty()) {
83 // Okay, we are referencing an already-parsed function, resolve them now.
85 const ValID &Fn = ForwardRefBlockAddresses.begin()->first;
86 if (Fn.Kind == ValID::t_GlobalName)
87 TheFn = M->getFunction(Fn.StrVal);
88 else if (Fn.UIntVal < NumberedVals.size())
89 TheFn = dyn_cast<Function>(NumberedVals[Fn.UIntVal]);
92 return Error(Fn.Loc, "unknown function referenced by blockaddress");
94 // Resolve all these references.
95 if (ResolveForwardRefBlockAddresses(TheFn,
96 ForwardRefBlockAddresses.begin()->second,
100 ForwardRefBlockAddresses.erase(ForwardRefBlockAddresses.begin());
104 if (!ForwardRefTypes.empty())
105 return Error(ForwardRefTypes.begin()->second.second,
106 "use of undefined type named '" +
107 ForwardRefTypes.begin()->first + "'");
108 if (!ForwardRefTypeIDs.empty())
109 return Error(ForwardRefTypeIDs.begin()->second.second,
110 "use of undefined type '%" +
111 Twine(ForwardRefTypeIDs.begin()->first) + "'");
113 if (!ForwardRefVals.empty())
114 return Error(ForwardRefVals.begin()->second.second,
115 "use of undefined value '@" + ForwardRefVals.begin()->first +
118 if (!ForwardRefValIDs.empty())
119 return Error(ForwardRefValIDs.begin()->second.second,
120 "use of undefined value '@" +
121 Twine(ForwardRefValIDs.begin()->first) + "'");
123 if (!ForwardRefMDNodes.empty())
124 return Error(ForwardRefMDNodes.begin()->second.second,
125 "use of undefined metadata '!" +
126 Twine(ForwardRefMDNodes.begin()->first) + "'");
129 // Look for intrinsic functions and CallInst that need to be upgraded
130 for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; )
131 UpgradeCallsToIntrinsic(FI++); // must be post-increment, as we remove
133 // Check debug info intrinsics.
134 CheckDebugInfoIntrinsics(M);
138 bool LLParser::ResolveForwardRefBlockAddresses(Function *TheFn,
139 std::vector<std::pair<ValID, GlobalValue*> > &Refs,
140 PerFunctionState *PFS) {
141 // Loop over all the references, resolving them.
142 for (unsigned i = 0, e = Refs.size(); i != e; ++i) {
145 if (Refs[i].first.Kind == ValID::t_LocalName)
146 Res = PFS->GetBB(Refs[i].first.StrVal, Refs[i].first.Loc);
148 Res = PFS->GetBB(Refs[i].first.UIntVal, Refs[i].first.Loc);
149 } else if (Refs[i].first.Kind == ValID::t_LocalID) {
150 return Error(Refs[i].first.Loc,
151 "cannot take address of numeric label after the function is defined");
153 Res = dyn_cast_or_null<BasicBlock>(
154 TheFn->getValueSymbolTable().lookup(Refs[i].first.StrVal));
158 return Error(Refs[i].first.Loc,
159 "referenced value is not a basic block");
161 // Get the BlockAddress for this and update references to use it.
162 BlockAddress *BA = BlockAddress::get(TheFn, Res);
163 Refs[i].second->replaceAllUsesWith(BA);
164 Refs[i].second->eraseFromParent();
170 //===----------------------------------------------------------------------===//
171 // Top-Level Entities
172 //===----------------------------------------------------------------------===//
174 bool LLParser::ParseTopLevelEntities() {
176 switch (Lex.getKind()) {
177 default: return TokError("expected top-level entity");
178 case lltok::Eof: return false;
179 //case lltok::kw_define:
180 case lltok::kw_declare: if (ParseDeclare()) return true; break;
181 case lltok::kw_define: if (ParseDefine()) return true; break;
182 case lltok::kw_module: if (ParseModuleAsm()) return true; break;
183 case lltok::kw_target: if (ParseTargetDefinition()) return true; break;
184 case lltok::kw_deplibs: if (ParseDepLibs()) return true; break;
185 case lltok::kw_type: if (ParseUnnamedType()) return true; break;
186 case lltok::LocalVarID: if (ParseUnnamedType()) return true; break;
187 case lltok::StringConstant: // FIXME: REMOVE IN LLVM 3.0
188 case lltok::LocalVar: if (ParseNamedType()) return true; break;
189 case lltok::GlobalID: if (ParseUnnamedGlobal()) return true; break;
190 case lltok::GlobalVar: if (ParseNamedGlobal()) return true; break;
191 case lltok::exclaim: if (ParseStandaloneMetadata()) return true; break;
192 case lltok::MetadataVar: if (ParseNamedMetadata()) return true; break;
194 // The Global variable production with no name can have many different
195 // optional leading prefixes, the production is:
196 // GlobalVar ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
197 // OptionalAddrSpace OptionalUnNammedAddr
198 // ('constant'|'global') ...
199 case lltok::kw_private: // OptionalLinkage
200 case lltok::kw_linker_private: // OptionalLinkage
201 case lltok::kw_linker_private_weak: // OptionalLinkage
202 case lltok::kw_linker_private_weak_def_auto: // OptionalLinkage
203 case lltok::kw_internal: // OptionalLinkage
204 case lltok::kw_weak: // OptionalLinkage
205 case lltok::kw_weak_odr: // OptionalLinkage
206 case lltok::kw_linkonce: // OptionalLinkage
207 case lltok::kw_linkonce_odr: // OptionalLinkage
208 case lltok::kw_appending: // OptionalLinkage
209 case lltok::kw_dllexport: // OptionalLinkage
210 case lltok::kw_common: // OptionalLinkage
211 case lltok::kw_dllimport: // OptionalLinkage
212 case lltok::kw_extern_weak: // OptionalLinkage
213 case lltok::kw_external: { // OptionalLinkage
214 unsigned Linkage, Visibility;
215 if (ParseOptionalLinkage(Linkage) ||
216 ParseOptionalVisibility(Visibility) ||
217 ParseGlobal("", SMLoc(), Linkage, true, Visibility))
221 case lltok::kw_default: // OptionalVisibility
222 case lltok::kw_hidden: // OptionalVisibility
223 case lltok::kw_protected: { // OptionalVisibility
225 if (ParseOptionalVisibility(Visibility) ||
226 ParseGlobal("", SMLoc(), 0, false, Visibility))
231 case lltok::kw_thread_local: // OptionalThreadLocal
232 case lltok::kw_addrspace: // OptionalAddrSpace
233 case lltok::kw_constant: // GlobalType
234 case lltok::kw_global: // GlobalType
235 if (ParseGlobal("", SMLoc(), 0, false, 0)) return true;
243 /// ::= 'module' 'asm' STRINGCONSTANT
244 bool LLParser::ParseModuleAsm() {
245 assert(Lex.getKind() == lltok::kw_module);
249 if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
250 ParseStringConstant(AsmStr)) return true;
252 const std::string &AsmSoFar = M->getModuleInlineAsm();
253 if (AsmSoFar.empty())
254 M->setModuleInlineAsm(AsmStr);
256 M->setModuleInlineAsm(AsmSoFar+"\n"+AsmStr);
261 /// ::= 'target' 'triple' '=' STRINGCONSTANT
262 /// ::= 'target' 'datalayout' '=' STRINGCONSTANT
263 bool LLParser::ParseTargetDefinition() {
264 assert(Lex.getKind() == lltok::kw_target);
267 default: return TokError("unknown target property");
268 case lltok::kw_triple:
270 if (ParseToken(lltok::equal, "expected '=' after target triple") ||
271 ParseStringConstant(Str))
273 M->setTargetTriple(Str);
275 case lltok::kw_datalayout:
277 if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
278 ParseStringConstant(Str))
280 M->setDataLayout(Str);
286 /// ::= 'deplibs' '=' '[' ']'
287 /// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
288 bool LLParser::ParseDepLibs() {
289 assert(Lex.getKind() == lltok::kw_deplibs);
291 if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
292 ParseToken(lltok::lsquare, "expected '=' after deplibs"))
295 if (EatIfPresent(lltok::rsquare))
299 if (ParseStringConstant(Str)) return true;
302 while (EatIfPresent(lltok::comma)) {
303 if (ParseStringConstant(Str)) return true;
307 return ParseToken(lltok::rsquare, "expected ']' at end of list");
310 /// ParseUnnamedType:
312 /// ::= LocalVarID '=' 'type' type
313 bool LLParser::ParseUnnamedType() {
314 unsigned TypeID = NumberedTypes.size();
316 // Handle the LocalVarID form.
317 if (Lex.getKind() == lltok::LocalVarID) {
318 if (Lex.getUIntVal() != TypeID)
319 return Error(Lex.getLoc(), "type expected to be numbered '%" +
320 Twine(TypeID) + "'");
321 Lex.Lex(); // eat LocalVarID;
323 if (ParseToken(lltok::equal, "expected '=' after name"))
327 LocTy TypeLoc = Lex.getLoc();
328 if (ParseToken(lltok::kw_type, "expected 'type' after '='")) return true;
330 PATypeHolder Ty(Type::getVoidTy(Context));
331 if (ParseType(Ty)) return true;
333 // See if this type was previously referenced.
334 std::map<unsigned, std::pair<PATypeHolder, LocTy> >::iterator
335 FI = ForwardRefTypeIDs.find(TypeID);
336 if (FI != ForwardRefTypeIDs.end()) {
337 if (FI->second.first.get() == Ty)
338 return Error(TypeLoc, "self referential type is invalid");
340 cast<DerivedType>(FI->second.first.get())->refineAbstractTypeTo(Ty);
341 Ty = FI->second.first.get();
342 ForwardRefTypeIDs.erase(FI);
345 NumberedTypes.push_back(Ty);
351 /// ::= LocalVar '=' 'type' type
352 bool LLParser::ParseNamedType() {
353 std::string Name = Lex.getStrVal();
354 LocTy NameLoc = Lex.getLoc();
355 Lex.Lex(); // eat LocalVar.
357 PATypeHolder Ty(Type::getVoidTy(Context));
359 if (ParseToken(lltok::equal, "expected '=' after name") ||
360 ParseToken(lltok::kw_type, "expected 'type' after name") ||
364 // Set the type name, checking for conflicts as we do so.
365 bool AlreadyExists = M->addTypeName(Name, Ty);
366 if (!AlreadyExists) return false;
368 // See if this type is a forward reference. We need to eagerly resolve
369 // types to allow recursive type redefinitions below.
370 std::map<std::string, std::pair<PATypeHolder, LocTy> >::iterator
371 FI = ForwardRefTypes.find(Name);
372 if (FI != ForwardRefTypes.end()) {
373 if (FI->second.first.get() == Ty)
374 return Error(NameLoc, "self referential type is invalid");
376 cast<DerivedType>(FI->second.first.get())->refineAbstractTypeTo(Ty);
377 Ty = FI->second.first.get();
378 ForwardRefTypes.erase(FI);
381 // Inserting a name that is already defined, get the existing name.
382 const Type *Existing = M->getTypeByName(Name);
383 assert(Existing && "Conflict but no matching type?!");
385 // Otherwise, this is an attempt to redefine a type. That's okay if
386 // the redefinition is identical to the original.
387 // FIXME: REMOVE REDEFINITIONS IN LLVM 3.0
388 if (Existing == Ty) return false;
390 // Any other kind of (non-equivalent) redefinition is an error.
391 return Error(NameLoc, "redefinition of type named '" + Name + "' of type '" +
392 Ty->getDescription() + "'");
397 /// ::= 'declare' FunctionHeader
398 bool LLParser::ParseDeclare() {
399 assert(Lex.getKind() == lltok::kw_declare);
403 return ParseFunctionHeader(F, false);
407 /// ::= 'define' FunctionHeader '{' ...
408 bool LLParser::ParseDefine() {
409 assert(Lex.getKind() == lltok::kw_define);
413 return ParseFunctionHeader(F, true) ||
414 ParseFunctionBody(*F);
420 bool LLParser::ParseGlobalType(bool &IsConstant) {
421 if (Lex.getKind() == lltok::kw_constant)
423 else if (Lex.getKind() == lltok::kw_global)
427 return TokError("expected 'global' or 'constant'");
433 /// ParseUnnamedGlobal:
434 /// OptionalVisibility ALIAS ...
435 /// OptionalLinkage OptionalVisibility ... -> global variable
436 /// GlobalID '=' OptionalVisibility ALIAS ...
437 /// GlobalID '=' OptionalLinkage OptionalVisibility ... -> global variable
438 bool LLParser::ParseUnnamedGlobal() {
439 unsigned VarID = NumberedVals.size();
441 LocTy NameLoc = Lex.getLoc();
443 // Handle the GlobalID form.
444 if (Lex.getKind() == lltok::GlobalID) {
445 if (Lex.getUIntVal() != VarID)
446 return Error(Lex.getLoc(), "variable expected to be numbered '%" +
448 Lex.Lex(); // eat GlobalID;
450 if (ParseToken(lltok::equal, "expected '=' after name"))
455 unsigned Linkage, Visibility;
456 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
457 ParseOptionalVisibility(Visibility))
460 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
461 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
462 return ParseAlias(Name, NameLoc, Visibility);
465 /// ParseNamedGlobal:
466 /// GlobalVar '=' OptionalVisibility ALIAS ...
467 /// GlobalVar '=' OptionalLinkage OptionalVisibility ... -> global variable
468 bool LLParser::ParseNamedGlobal() {
469 assert(Lex.getKind() == lltok::GlobalVar);
470 LocTy NameLoc = Lex.getLoc();
471 std::string Name = Lex.getStrVal();
475 unsigned Linkage, Visibility;
476 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
477 ParseOptionalLinkage(Linkage, HasLinkage) ||
478 ParseOptionalVisibility(Visibility))
481 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
482 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
483 return ParseAlias(Name, NameLoc, Visibility);
487 // ::= '!' STRINGCONSTANT
488 bool LLParser::ParseMDString(MDString *&Result) {
490 if (ParseStringConstant(Str)) return true;
491 Result = MDString::get(Context, Str);
496 // ::= '!' MDNodeNumber
498 /// This version of ParseMDNodeID returns the slot number and null in the case
499 /// of a forward reference.
500 bool LLParser::ParseMDNodeID(MDNode *&Result, unsigned &SlotNo) {
501 // !{ ..., !42, ... }
502 if (ParseUInt32(SlotNo)) return true;
504 // Check existing MDNode.
505 if (SlotNo < NumberedMetadata.size() && NumberedMetadata[SlotNo] != 0)
506 Result = NumberedMetadata[SlotNo];
512 bool LLParser::ParseMDNodeID(MDNode *&Result) {
513 // !{ ..., !42, ... }
515 if (ParseMDNodeID(Result, MID)) return true;
517 // If not a forward reference, just return it now.
518 if (Result) return false;
520 // Otherwise, create MDNode forward reference.
521 MDNode *FwdNode = MDNode::getTemporary(Context, 0, 0);
522 ForwardRefMDNodes[MID] = std::make_pair(FwdNode, Lex.getLoc());
524 if (NumberedMetadata.size() <= MID)
525 NumberedMetadata.resize(MID+1);
526 NumberedMetadata[MID] = FwdNode;
531 /// ParseNamedMetadata:
532 /// !foo = !{ !1, !2 }
533 bool LLParser::ParseNamedMetadata() {
534 assert(Lex.getKind() == lltok::MetadataVar);
535 std::string Name = Lex.getStrVal();
538 if (ParseToken(lltok::equal, "expected '=' here") ||
539 ParseToken(lltok::exclaim, "Expected '!' here") ||
540 ParseToken(lltok::lbrace, "Expected '{' here"))
543 NamedMDNode *NMD = M->getOrInsertNamedMetadata(Name);
544 if (Lex.getKind() != lltok::rbrace)
546 if (ParseToken(lltok::exclaim, "Expected '!' here"))
550 if (ParseMDNodeID(N)) return true;
552 } while (EatIfPresent(lltok::comma));
554 if (ParseToken(lltok::rbrace, "expected end of metadata node"))
560 /// ParseStandaloneMetadata:
562 bool LLParser::ParseStandaloneMetadata() {
563 assert(Lex.getKind() == lltok::exclaim);
565 unsigned MetadataID = 0;
568 PATypeHolder Ty(Type::getVoidTy(Context));
569 SmallVector<Value *, 16> Elts;
570 if (ParseUInt32(MetadataID) ||
571 ParseToken(lltok::equal, "expected '=' here") ||
572 ParseType(Ty, TyLoc) ||
573 ParseToken(lltok::exclaim, "Expected '!' here") ||
574 ParseToken(lltok::lbrace, "Expected '{' here") ||
575 ParseMDNodeVector(Elts, NULL) ||
576 ParseToken(lltok::rbrace, "expected end of metadata node"))
579 MDNode *Init = MDNode::get(Context, Elts.data(), Elts.size());
581 // See if this was forward referenced, if so, handle it.
582 std::map<unsigned, std::pair<TrackingVH<MDNode>, LocTy> >::iterator
583 FI = ForwardRefMDNodes.find(MetadataID);
584 if (FI != ForwardRefMDNodes.end()) {
585 MDNode *Temp = FI->second.first;
586 Temp->replaceAllUsesWith(Init);
587 MDNode::deleteTemporary(Temp);
588 ForwardRefMDNodes.erase(FI);
590 assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work");
592 if (MetadataID >= NumberedMetadata.size())
593 NumberedMetadata.resize(MetadataID+1);
595 if (NumberedMetadata[MetadataID] != 0)
596 return TokError("Metadata id is already used");
597 NumberedMetadata[MetadataID] = Init;
604 /// ::= GlobalVar '=' OptionalVisibility 'alias' OptionalLinkage Aliasee
607 /// ::= 'bitcast' '(' TypeAndValue 'to' Type ')'
608 /// ::= 'getelementptr' 'inbounds'? '(' ... ')'
610 /// Everything through visibility has already been parsed.
612 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc,
613 unsigned Visibility) {
614 assert(Lex.getKind() == lltok::kw_alias);
617 LocTy LinkageLoc = Lex.getLoc();
618 if (ParseOptionalLinkage(Linkage))
621 if (Linkage != GlobalValue::ExternalLinkage &&
622 Linkage != GlobalValue::WeakAnyLinkage &&
623 Linkage != GlobalValue::WeakODRLinkage &&
624 Linkage != GlobalValue::InternalLinkage &&
625 Linkage != GlobalValue::PrivateLinkage &&
626 Linkage != GlobalValue::LinkerPrivateLinkage &&
627 Linkage != GlobalValue::LinkerPrivateWeakLinkage &&
628 Linkage != GlobalValue::LinkerPrivateWeakDefAutoLinkage)
629 return Error(LinkageLoc, "invalid linkage type for alias");
632 LocTy AliaseeLoc = Lex.getLoc();
633 if (Lex.getKind() != lltok::kw_bitcast &&
634 Lex.getKind() != lltok::kw_getelementptr) {
635 if (ParseGlobalTypeAndValue(Aliasee)) return true;
637 // The bitcast dest type is not present, it is implied by the dest type.
639 if (ParseValID(ID)) return true;
640 if (ID.Kind != ValID::t_Constant)
641 return Error(AliaseeLoc, "invalid aliasee");
642 Aliasee = ID.ConstantVal;
645 if (!Aliasee->getType()->isPointerTy())
646 return Error(AliaseeLoc, "alias must have pointer type");
648 // Okay, create the alias but do not insert it into the module yet.
649 GlobalAlias* GA = new GlobalAlias(Aliasee->getType(),
650 (GlobalValue::LinkageTypes)Linkage, Name,
652 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
654 // See if this value already exists in the symbol table. If so, it is either
655 // a redefinition or a definition of a forward reference.
656 if (GlobalValue *Val = M->getNamedValue(Name)) {
657 // See if this was a redefinition. If so, there is no entry in
659 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
660 I = ForwardRefVals.find(Name);
661 if (I == ForwardRefVals.end())
662 return Error(NameLoc, "redefinition of global named '@" + Name + "'");
664 // Otherwise, this was a definition of forward ref. Verify that types
666 if (Val->getType() != GA->getType())
667 return Error(NameLoc,
668 "forward reference and definition of alias have different types");
670 // If they agree, just RAUW the old value with the alias and remove the
672 Val->replaceAllUsesWith(GA);
673 Val->eraseFromParent();
674 ForwardRefVals.erase(I);
677 // Insert into the module, we know its name won't collide now.
678 M->getAliasList().push_back(GA);
679 assert(GA->getName() == Name && "Should not be a name conflict!");
685 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalThreadLocal
686 /// OptionalAddrSpace OptionalUnNammedAddr GlobalType Type Const
687 /// ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
688 /// OptionalAddrSpace OptionalUnNammedAddr GlobalType Type Const
690 /// Everything through visibility has been parsed already.
692 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
693 unsigned Linkage, bool HasLinkage,
694 unsigned Visibility) {
696 bool ThreadLocal, IsConstant, UnnamedAddr;
697 LocTy UnnamedAddrLoc;
700 PATypeHolder Ty(Type::getVoidTy(Context));
701 if (ParseOptionalToken(lltok::kw_thread_local, ThreadLocal) ||
702 ParseOptionalAddrSpace(AddrSpace) ||
703 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
705 ParseGlobalType(IsConstant) ||
706 ParseType(Ty, TyLoc))
709 // If the linkage is specified and is external, then no initializer is
712 if (!HasLinkage || (Linkage != GlobalValue::DLLImportLinkage &&
713 Linkage != GlobalValue::ExternalWeakLinkage &&
714 Linkage != GlobalValue::ExternalLinkage)) {
715 if (ParseGlobalValue(Ty, Init))
719 if (!Init && UnnamedAddr)
720 return Error(UnnamedAddrLoc, "only definitions can have unnamed_addr");
722 if (Ty->isFunctionTy() || Ty->isLabelTy())
723 return Error(TyLoc, "invalid type for global variable");
725 GlobalVariable *GV = 0;
727 // See if the global was forward referenced, if so, use the global.
729 if (GlobalValue *GVal = M->getNamedValue(Name)) {
730 if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
731 return Error(NameLoc, "redefinition of global '@" + Name + "'");
732 GV = cast<GlobalVariable>(GVal);
735 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
736 I = ForwardRefValIDs.find(NumberedVals.size());
737 if (I != ForwardRefValIDs.end()) {
738 GV = cast<GlobalVariable>(I->second.first);
739 ForwardRefValIDs.erase(I);
744 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, 0,
745 Name, 0, false, AddrSpace);
747 if (GV->getType()->getElementType() != Ty)
749 "forward reference and definition of global have different types");
751 // Move the forward-reference to the correct spot in the module.
752 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
756 NumberedVals.push_back(GV);
758 // Set the parsed properties on the global.
760 GV->setInitializer(Init);
761 GV->setConstant(IsConstant);
762 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
763 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
764 GV->setThreadLocal(ThreadLocal);
765 GV->setUnnamedAddr(UnnamedAddr);
767 // Parse attributes on the global.
768 while (Lex.getKind() == lltok::comma) {
771 if (Lex.getKind() == lltok::kw_section) {
773 GV->setSection(Lex.getStrVal());
774 if (ParseToken(lltok::StringConstant, "expected global section string"))
776 } else if (Lex.getKind() == lltok::kw_align) {
778 if (ParseOptionalAlignment(Alignment)) return true;
779 GV->setAlignment(Alignment);
781 TokError("unknown global variable property!");
789 //===----------------------------------------------------------------------===//
790 // GlobalValue Reference/Resolution Routines.
791 //===----------------------------------------------------------------------===//
793 /// GetGlobalVal - Get a value with the specified name or ID, creating a
794 /// forward reference record if needed. This can return null if the value
795 /// exists but does not have the right type.
796 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, const Type *Ty,
798 const PointerType *PTy = dyn_cast<PointerType>(Ty);
800 Error(Loc, "global variable reference must have pointer type");
804 // Look this name up in the normal function symbol table.
806 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
808 // If this is a forward reference for the value, see if we already created a
809 // forward ref record.
811 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
812 I = ForwardRefVals.find(Name);
813 if (I != ForwardRefVals.end())
814 Val = I->second.first;
817 // If we have the value in the symbol table or fwd-ref table, return it.
819 if (Val->getType() == Ty) return Val;
820 Error(Loc, "'@" + Name + "' defined with type '" +
821 Val->getType()->getDescription() + "'");
825 // Otherwise, create a new forward reference for this value and remember it.
827 if (const FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType())) {
828 // Function types can return opaque but functions can't.
829 if (FT->getReturnType()->isOpaqueTy()) {
830 Error(Loc, "function may not return opaque type");
834 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
836 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
837 GlobalValue::ExternalWeakLinkage, 0, Name);
840 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
844 GlobalValue *LLParser::GetGlobalVal(unsigned ID, const Type *Ty, LocTy Loc) {
845 const PointerType *PTy = dyn_cast<PointerType>(Ty);
847 Error(Loc, "global variable reference must have pointer type");
851 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
853 // If this is a forward reference for the value, see if we already created a
854 // forward ref record.
856 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
857 I = ForwardRefValIDs.find(ID);
858 if (I != ForwardRefValIDs.end())
859 Val = I->second.first;
862 // If we have the value in the symbol table or fwd-ref table, return it.
864 if (Val->getType() == Ty) return Val;
865 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
866 Val->getType()->getDescription() + "'");
870 // Otherwise, create a new forward reference for this value and remember it.
872 if (const FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType())) {
873 // Function types can return opaque but functions can't.
874 if (FT->getReturnType()->isOpaqueTy()) {
875 Error(Loc, "function may not return opaque type");
878 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
880 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
881 GlobalValue::ExternalWeakLinkage, 0, "");
884 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
889 //===----------------------------------------------------------------------===//
891 //===----------------------------------------------------------------------===//
893 /// ParseToken - If the current token has the specified kind, eat it and return
894 /// success. Otherwise, emit the specified error and return failure.
895 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
896 if (Lex.getKind() != T)
897 return TokError(ErrMsg);
902 /// ParseStringConstant
903 /// ::= StringConstant
904 bool LLParser::ParseStringConstant(std::string &Result) {
905 if (Lex.getKind() != lltok::StringConstant)
906 return TokError("expected string constant");
907 Result = Lex.getStrVal();
914 bool LLParser::ParseUInt32(unsigned &Val) {
915 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
916 return TokError("expected integer");
917 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
918 if (Val64 != unsigned(Val64))
919 return TokError("expected 32-bit integer (too large)");
926 /// ParseOptionalAddrSpace
928 /// := 'addrspace' '(' uint32 ')'
929 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
931 if (!EatIfPresent(lltok::kw_addrspace))
933 return ParseToken(lltok::lparen, "expected '(' in address space") ||
934 ParseUInt32(AddrSpace) ||
935 ParseToken(lltok::rparen, "expected ')' in address space");
938 /// ParseOptionalAttrs - Parse a potentially empty attribute list. AttrKind
939 /// indicates what kind of attribute list this is: 0: function arg, 1: result,
940 /// 2: function attr.
941 /// 3: function arg after value: FIXME: REMOVE IN LLVM 3.0
942 bool LLParser::ParseOptionalAttrs(unsigned &Attrs, unsigned AttrKind) {
943 Attrs = Attribute::None;
944 LocTy AttrLoc = Lex.getLoc();
947 switch (Lex.getKind()) {
950 // Treat these as signext/zeroext if they occur in the argument list after
951 // the value, as in "call i8 @foo(i8 10 sext)". If they occur before the
952 // value, as in "call i8 @foo(i8 sext (" then it is part of a constant
954 // FIXME: REMOVE THIS IN LLVM 3.0
956 if (Lex.getKind() == lltok::kw_sext)
957 Attrs |= Attribute::SExt;
959 Attrs |= Attribute::ZExt;
963 default: // End of attributes.
964 if (AttrKind != 2 && (Attrs & Attribute::FunctionOnly))
965 return Error(AttrLoc, "invalid use of function-only attribute");
967 if (AttrKind != 0 && AttrKind != 3 && (Attrs & Attribute::ParameterOnly))
968 return Error(AttrLoc, "invalid use of parameter-only attribute");
971 case lltok::kw_zeroext: Attrs |= Attribute::ZExt; break;
972 case lltok::kw_signext: Attrs |= Attribute::SExt; break;
973 case lltok::kw_inreg: Attrs |= Attribute::InReg; break;
974 case lltok::kw_sret: Attrs |= Attribute::StructRet; break;
975 case lltok::kw_noalias: Attrs |= Attribute::NoAlias; break;
976 case lltok::kw_nocapture: Attrs |= Attribute::NoCapture; break;
977 case lltok::kw_byval: Attrs |= Attribute::ByVal; break;
978 case lltok::kw_nest: Attrs |= Attribute::Nest; break;
980 case lltok::kw_noreturn: Attrs |= Attribute::NoReturn; break;
981 case lltok::kw_nounwind: Attrs |= Attribute::NoUnwind; break;
982 case lltok::kw_noinline: Attrs |= Attribute::NoInline; break;
983 case lltok::kw_readnone: Attrs |= Attribute::ReadNone; break;
984 case lltok::kw_readonly: Attrs |= Attribute::ReadOnly; break;
985 case lltok::kw_inlinehint: Attrs |= Attribute::InlineHint; break;
986 case lltok::kw_alwaysinline: Attrs |= Attribute::AlwaysInline; break;
987 case lltok::kw_optsize: Attrs |= Attribute::OptimizeForSize; break;
988 case lltok::kw_ssp: Attrs |= Attribute::StackProtect; break;
989 case lltok::kw_sspreq: Attrs |= Attribute::StackProtectReq; break;
990 case lltok::kw_noredzone: Attrs |= Attribute::NoRedZone; break;
991 case lltok::kw_noimplicitfloat: Attrs |= Attribute::NoImplicitFloat; break;
992 case lltok::kw_naked: Attrs |= Attribute::Naked; break;
993 case lltok::kw_hotpatch: Attrs |= Attribute::Hotpatch; break;
995 case lltok::kw_alignstack: {
997 if (ParseOptionalStackAlignment(Alignment))
999 Attrs |= Attribute::constructStackAlignmentFromInt(Alignment);
1003 case lltok::kw_align: {
1005 if (ParseOptionalAlignment(Alignment))
1007 Attrs |= Attribute::constructAlignmentFromInt(Alignment);
1016 /// ParseOptionalLinkage
1019 /// ::= 'linker_private'
1020 /// ::= 'linker_private_weak'
1021 /// ::= 'linker_private_weak_def_auto'
1026 /// ::= 'linkonce_odr'
1027 /// ::= 'available_externally'
1032 /// ::= 'extern_weak'
1034 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1036 switch (Lex.getKind()) {
1037 default: Res=GlobalValue::ExternalLinkage; return false;
1038 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1039 case lltok::kw_linker_private: Res = GlobalValue::LinkerPrivateLinkage; break;
1040 case lltok::kw_linker_private_weak:
1041 Res = GlobalValue::LinkerPrivateWeakLinkage;
1043 case lltok::kw_linker_private_weak_def_auto:
1044 Res = GlobalValue::LinkerPrivateWeakDefAutoLinkage;
1046 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1047 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1048 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1049 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1050 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1051 case lltok::kw_available_externally:
1052 Res = GlobalValue::AvailableExternallyLinkage;
1054 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1055 case lltok::kw_dllexport: Res = GlobalValue::DLLExportLinkage; break;
1056 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1057 case lltok::kw_dllimport: Res = GlobalValue::DLLImportLinkage; break;
1058 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1059 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1066 /// ParseOptionalVisibility
1072 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1073 switch (Lex.getKind()) {
1074 default: Res = GlobalValue::DefaultVisibility; return false;
1075 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1076 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1077 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1083 /// ParseOptionalCallingConv
1088 /// ::= 'x86_stdcallcc'
1089 /// ::= 'x86_fastcallcc'
1090 /// ::= 'x86_thiscallcc'
1091 /// ::= 'arm_apcscc'
1092 /// ::= 'arm_aapcscc'
1093 /// ::= 'arm_aapcs_vfpcc'
1094 /// ::= 'msp430_intrcc'
1095 /// ::= 'ptx_kernel'
1096 /// ::= 'ptx_device'
1099 bool LLParser::ParseOptionalCallingConv(CallingConv::ID &CC) {
1100 switch (Lex.getKind()) {
1101 default: CC = CallingConv::C; return false;
1102 case lltok::kw_ccc: CC = CallingConv::C; break;
1103 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1104 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1105 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1106 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1107 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1108 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1109 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1110 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1111 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1112 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1113 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1114 case lltok::kw_cc: {
1115 unsigned ArbitraryCC;
1117 if (ParseUInt32(ArbitraryCC)) {
1120 CC = static_cast<CallingConv::ID>(ArbitraryCC);
1130 /// ParseInstructionMetadata
1131 /// ::= !dbg !42 (',' !dbg !57)*
1132 bool LLParser::ParseInstructionMetadata(Instruction *Inst,
1133 PerFunctionState *PFS) {
1135 if (Lex.getKind() != lltok::MetadataVar)
1136 return TokError("expected metadata after comma");
1138 std::string Name = Lex.getStrVal();
1139 unsigned MDK = M->getMDKindID(Name.c_str());
1143 SMLoc Loc = Lex.getLoc();
1145 if (ParseToken(lltok::exclaim, "expected '!' here"))
1148 // This code is similar to that of ParseMetadataValue, however it needs to
1149 // have special-case code for a forward reference; see the comments on
1150 // ForwardRefInstMetadata for details. Also, MDStrings are not supported
1151 // at the top level here.
1152 if (Lex.getKind() == lltok::lbrace) {
1154 if (ParseMetadataListValue(ID, PFS))
1156 assert(ID.Kind == ValID::t_MDNode);
1157 Inst->setMetadata(MDK, ID.MDNodeVal);
1159 unsigned NodeID = 0;
1160 if (ParseMDNodeID(Node, NodeID))
1163 // If we got the node, add it to the instruction.
1164 Inst->setMetadata(MDK, Node);
1166 MDRef R = { Loc, MDK, NodeID };
1167 // Otherwise, remember that this should be resolved later.
1168 ForwardRefInstMetadata[Inst].push_back(R);
1172 // If this is the end of the list, we're done.
1173 } while (EatIfPresent(lltok::comma));
1177 /// ParseOptionalAlignment
1180 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1182 if (!EatIfPresent(lltok::kw_align))
1184 LocTy AlignLoc = Lex.getLoc();
1185 if (ParseUInt32(Alignment)) return true;
1186 if (!isPowerOf2_32(Alignment))
1187 return Error(AlignLoc, "alignment is not a power of two");
1188 if (Alignment > Value::MaximumAlignment)
1189 return Error(AlignLoc, "huge alignments are not supported yet");
1193 /// ParseOptionalCommaAlign
1197 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1199 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1200 bool &AteExtraComma) {
1201 AteExtraComma = false;
1202 while (EatIfPresent(lltok::comma)) {
1203 // Metadata at the end is an early exit.
1204 if (Lex.getKind() == lltok::MetadataVar) {
1205 AteExtraComma = true;
1209 if (Lex.getKind() != lltok::kw_align)
1210 return Error(Lex.getLoc(), "expected metadata or 'align'");
1212 if (ParseOptionalAlignment(Alignment)) return true;
1218 /// ParseOptionalStackAlignment
1220 /// ::= 'alignstack' '(' 4 ')'
1221 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1223 if (!EatIfPresent(lltok::kw_alignstack))
1225 LocTy ParenLoc = Lex.getLoc();
1226 if (!EatIfPresent(lltok::lparen))
1227 return Error(ParenLoc, "expected '('");
1228 LocTy AlignLoc = Lex.getLoc();
1229 if (ParseUInt32(Alignment)) return true;
1230 ParenLoc = Lex.getLoc();
1231 if (!EatIfPresent(lltok::rparen))
1232 return Error(ParenLoc, "expected ')'");
1233 if (!isPowerOf2_32(Alignment))
1234 return Error(AlignLoc, "stack alignment is not a power of two");
1238 /// ParseIndexList - This parses the index list for an insert/extractvalue
1239 /// instruction. This sets AteExtraComma in the case where we eat an extra
1240 /// comma at the end of the line and find that it is followed by metadata.
1241 /// Clients that don't allow metadata can call the version of this function that
1242 /// only takes one argument.
1245 /// ::= (',' uint32)+
1247 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1248 bool &AteExtraComma) {
1249 AteExtraComma = false;
1251 if (Lex.getKind() != lltok::comma)
1252 return TokError("expected ',' as start of index list");
1254 while (EatIfPresent(lltok::comma)) {
1255 if (Lex.getKind() == lltok::MetadataVar) {
1256 AteExtraComma = true;
1260 if (ParseUInt32(Idx)) return true;
1261 Indices.push_back(Idx);
1267 //===----------------------------------------------------------------------===//
1269 //===----------------------------------------------------------------------===//
1271 /// ParseType - Parse and resolve a full type.
1272 bool LLParser::ParseType(PATypeHolder &Result, bool AllowVoid) {
1273 LocTy TypeLoc = Lex.getLoc();
1274 if (ParseTypeRec(Result)) return true;
1276 // Verify no unresolved uprefs.
1277 if (!UpRefs.empty())
1278 return Error(UpRefs.back().Loc, "invalid unresolved type up reference");
1280 if (!AllowVoid && Result.get()->isVoidTy())
1281 return Error(TypeLoc, "void type only allowed for function results");
1286 /// HandleUpRefs - Every time we finish a new layer of types, this function is
1287 /// called. It loops through the UpRefs vector, which is a list of the
1288 /// currently active types. For each type, if the up-reference is contained in
1289 /// the newly completed type, we decrement the level count. When the level
1290 /// count reaches zero, the up-referenced type is the type that is passed in:
1291 /// thus we can complete the cycle.
1293 PATypeHolder LLParser::HandleUpRefs(const Type *ty) {
1294 // If Ty isn't abstract, or if there are no up-references in it, then there is
1295 // nothing to resolve here.
1296 if (!ty->isAbstract() || UpRefs.empty()) return ty;
1298 PATypeHolder Ty(ty);
1300 dbgs() << "Type '" << Ty->getDescription()
1301 << "' newly formed. Resolving upreferences.\n"
1302 << UpRefs.size() << " upreferences active!\n";
1305 // If we find any resolvable upreferences (i.e., those whose NestingLevel goes
1306 // to zero), we resolve them all together before we resolve them to Ty. At
1307 // the end of the loop, if there is anything to resolve to Ty, it will be in
1309 OpaqueType *TypeToResolve = 0;
1311 for (unsigned i = 0; i != UpRefs.size(); ++i) {
1312 // Determine if 'Ty' directly contains this up-references 'LastContainedTy'.
1314 std::find(Ty->subtype_begin(), Ty->subtype_end(),
1315 UpRefs[i].LastContainedTy) != Ty->subtype_end();
1318 dbgs() << " UR#" << i << " - TypeContains(" << Ty->getDescription() << ", "
1319 << UpRefs[i].LastContainedTy->getDescription() << ") = "
1320 << (ContainsType ? "true" : "false")
1321 << " level=" << UpRefs[i].NestingLevel << "\n";
1326 // Decrement level of upreference
1327 unsigned Level = --UpRefs[i].NestingLevel;
1328 UpRefs[i].LastContainedTy = Ty;
1330 // If the Up-reference has a non-zero level, it shouldn't be resolved yet.
1335 dbgs() << " * Resolving upreference for " << UpRefs[i].UpRefTy << "\n";
1338 TypeToResolve = UpRefs[i].UpRefTy;
1340 UpRefs[i].UpRefTy->refineAbstractTypeTo(TypeToResolve);
1341 UpRefs.erase(UpRefs.begin()+i); // Remove from upreference list.
1342 --i; // Do not skip the next element.
1346 TypeToResolve->refineAbstractTypeTo(Ty);
1352 /// ParseTypeRec - The recursive function used to process the internal
1353 /// implementation details of types.
1354 bool LLParser::ParseTypeRec(PATypeHolder &Result) {
1355 switch (Lex.getKind()) {
1357 return TokError("expected type");
1359 // TypeRec ::= 'float' | 'void' (etc)
1360 Result = Lex.getTyVal();
1363 case lltok::kw_opaque:
1364 // TypeRec ::= 'opaque'
1365 Result = OpaqueType::get(Context);
1369 // TypeRec ::= '{' ... '}'
1370 if (ParseStructType(Result, false))
1373 case lltok::lsquare:
1374 // TypeRec ::= '[' ... ']'
1375 Lex.Lex(); // eat the lsquare.
1376 if (ParseArrayVectorType(Result, false))
1379 case lltok::less: // Either vector or packed struct.
1380 // TypeRec ::= '<' ... '>'
1382 if (Lex.getKind() == lltok::lbrace) {
1383 if (ParseStructType(Result, true) ||
1384 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1386 } else if (ParseArrayVectorType(Result, true))
1389 case lltok::LocalVar:
1390 case lltok::StringConstant: // FIXME: REMOVE IN LLVM 3.0
1392 if (const Type *T = M->getTypeByName(Lex.getStrVal())) {
1395 Result = OpaqueType::get(Context);
1396 ForwardRefTypes.insert(std::make_pair(Lex.getStrVal(),
1397 std::make_pair(Result,
1399 M->addTypeName(Lex.getStrVal(), Result.get());
1404 case lltok::LocalVarID:
1406 if (Lex.getUIntVal() < NumberedTypes.size())
1407 Result = NumberedTypes[Lex.getUIntVal()];
1409 std::map<unsigned, std::pair<PATypeHolder, LocTy> >::iterator
1410 I = ForwardRefTypeIDs.find(Lex.getUIntVal());
1411 if (I != ForwardRefTypeIDs.end())
1412 Result = I->second.first;
1414 Result = OpaqueType::get(Context);
1415 ForwardRefTypeIDs.insert(std::make_pair(Lex.getUIntVal(),
1416 std::make_pair(Result,
1422 case lltok::backslash: {
1423 // TypeRec ::= '\' 4
1426 if (ParseUInt32(Val)) return true;
1427 OpaqueType *OT = OpaqueType::get(Context); //Use temporary placeholder.
1428 UpRefs.push_back(UpRefRecord(Lex.getLoc(), Val, OT));
1434 // Parse the type suffixes.
1436 switch (Lex.getKind()) {
1438 default: return false;
1440 // TypeRec ::= TypeRec '*'
1442 if (Result.get()->isLabelTy())
1443 return TokError("basic block pointers are invalid");
1444 if (Result.get()->isVoidTy())
1445 return TokError("pointers to void are invalid; use i8* instead");
1446 if (!PointerType::isValidElementType(Result.get()))
1447 return TokError("pointer to this type is invalid");
1448 Result = HandleUpRefs(PointerType::getUnqual(Result.get()));
1452 // TypeRec ::= TypeRec 'addrspace' '(' uint32 ')' '*'
1453 case lltok::kw_addrspace: {
1454 if (Result.get()->isLabelTy())
1455 return TokError("basic block pointers are invalid");
1456 if (Result.get()->isVoidTy())
1457 return TokError("pointers to void are invalid; use i8* instead");
1458 if (!PointerType::isValidElementType(Result.get()))
1459 return TokError("pointer to this type is invalid");
1461 if (ParseOptionalAddrSpace(AddrSpace) ||
1462 ParseToken(lltok::star, "expected '*' in address space"))
1465 Result = HandleUpRefs(PointerType::get(Result.get(), AddrSpace));
1469 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1471 if (ParseFunctionType(Result))
1478 /// ParseParameterList
1480 /// ::= '(' Arg (',' Arg)* ')'
1482 /// ::= Type OptionalAttributes Value OptionalAttributes
1483 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1484 PerFunctionState &PFS) {
1485 if (ParseToken(lltok::lparen, "expected '(' in call"))
1488 while (Lex.getKind() != lltok::rparen) {
1489 // If this isn't the first argument, we need a comma.
1490 if (!ArgList.empty() &&
1491 ParseToken(lltok::comma, "expected ',' in argument list"))
1494 // Parse the argument.
1496 PATypeHolder ArgTy(Type::getVoidTy(Context));
1497 unsigned ArgAttrs1 = Attribute::None;
1498 unsigned ArgAttrs2 = Attribute::None;
1500 if (ParseType(ArgTy, ArgLoc))
1503 // Otherwise, handle normal operands.
1504 if (ParseOptionalAttrs(ArgAttrs1, 0) ||
1505 ParseValue(ArgTy, V, PFS) ||
1506 // FIXME: Should not allow attributes after the argument, remove this
1508 ParseOptionalAttrs(ArgAttrs2, 3))
1510 ArgList.push_back(ParamInfo(ArgLoc, V, ArgAttrs1|ArgAttrs2));
1513 Lex.Lex(); // Lex the ')'.
1519 /// ParseArgumentList - Parse the argument list for a function type or function
1520 /// prototype. If 'inType' is true then we are parsing a FunctionType.
1521 /// ::= '(' ArgTypeListI ')'
1525 /// ::= ArgTypeList ',' '...'
1526 /// ::= ArgType (',' ArgType)*
1528 bool LLParser::ParseArgumentList(std::vector<ArgInfo> &ArgList,
1529 bool &isVarArg, bool inType) {
1531 assert(Lex.getKind() == lltok::lparen);
1532 Lex.Lex(); // eat the (.
1534 if (Lex.getKind() == lltok::rparen) {
1536 } else if (Lex.getKind() == lltok::dotdotdot) {
1540 LocTy TypeLoc = Lex.getLoc();
1541 PATypeHolder ArgTy(Type::getVoidTy(Context));
1545 // If we're parsing a type, use ParseTypeRec, because we allow recursive
1546 // types (such as a function returning a pointer to itself). If parsing a
1547 // function prototype, we require fully resolved types.
1548 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1549 ParseOptionalAttrs(Attrs, 0)) return true;
1551 if (ArgTy->isVoidTy())
1552 return Error(TypeLoc, "argument can not have void type");
1554 if (Lex.getKind() == lltok::LocalVar ||
1555 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1556 Name = Lex.getStrVal();
1560 if (!FunctionType::isValidArgumentType(ArgTy))
1561 return Error(TypeLoc, "invalid type for function argument");
1563 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1565 while (EatIfPresent(lltok::comma)) {
1566 // Handle ... at end of arg list.
1567 if (EatIfPresent(lltok::dotdotdot)) {
1572 // Otherwise must be an argument type.
1573 TypeLoc = Lex.getLoc();
1574 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1575 ParseOptionalAttrs(Attrs, 0)) return true;
1577 if (ArgTy->isVoidTy())
1578 return Error(TypeLoc, "argument can not have void type");
1580 if (Lex.getKind() == lltok::LocalVar ||
1581 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1582 Name = Lex.getStrVal();
1588 if (!ArgTy->isFirstClassType() && !ArgTy->isOpaqueTy())
1589 return Error(TypeLoc, "invalid type for function argument");
1591 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1595 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1598 /// ParseFunctionType
1599 /// ::= Type ArgumentList OptionalAttrs
1600 bool LLParser::ParseFunctionType(PATypeHolder &Result) {
1601 assert(Lex.getKind() == lltok::lparen);
1603 if (!FunctionType::isValidReturnType(Result))
1604 return TokError("invalid function return type");
1606 std::vector<ArgInfo> ArgList;
1609 if (ParseArgumentList(ArgList, isVarArg, true) ||
1610 // FIXME: Allow, but ignore attributes on function types!
1611 // FIXME: Remove in LLVM 3.0
1612 ParseOptionalAttrs(Attrs, 2))
1615 // Reject names on the arguments lists.
1616 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1617 if (!ArgList[i].Name.empty())
1618 return Error(ArgList[i].Loc, "argument name invalid in function type");
1619 if (!ArgList[i].Attrs != 0) {
1620 // Allow but ignore attributes on function types; this permits
1622 // FIXME: REJECT ATTRIBUTES ON FUNCTION TYPES in LLVM 3.0
1626 std::vector<const Type*> ArgListTy;
1627 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1628 ArgListTy.push_back(ArgList[i].Type);
1630 Result = HandleUpRefs(FunctionType::get(Result.get(),
1631 ArgListTy, isVarArg));
1635 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
1638 /// ::= '{' TypeRec (',' TypeRec)* '}'
1639 /// ::= '<' '{' '}' '>'
1640 /// ::= '<' '{' TypeRec (',' TypeRec)* '}' '>'
1641 bool LLParser::ParseStructType(PATypeHolder &Result, bool Packed) {
1642 assert(Lex.getKind() == lltok::lbrace);
1643 Lex.Lex(); // Consume the '{'
1645 if (EatIfPresent(lltok::rbrace)) {
1646 Result = StructType::get(Context, Packed);
1650 std::vector<PATypeHolder> ParamsList;
1651 LocTy EltTyLoc = Lex.getLoc();
1652 if (ParseTypeRec(Result)) return true;
1653 ParamsList.push_back(Result);
1655 if (Result->isVoidTy())
1656 return Error(EltTyLoc, "struct element can not have void type");
1657 if (!StructType::isValidElementType(Result))
1658 return Error(EltTyLoc, "invalid element type for struct");
1660 while (EatIfPresent(lltok::comma)) {
1661 EltTyLoc = Lex.getLoc();
1662 if (ParseTypeRec(Result)) return true;
1664 if (Result->isVoidTy())
1665 return Error(EltTyLoc, "struct element can not have void type");
1666 if (!StructType::isValidElementType(Result))
1667 return Error(EltTyLoc, "invalid element type for struct");
1669 ParamsList.push_back(Result);
1672 if (ParseToken(lltok::rbrace, "expected '}' at end of struct"))
1675 std::vector<const Type*> ParamsListTy;
1676 for (unsigned i = 0, e = ParamsList.size(); i != e; ++i)
1677 ParamsListTy.push_back(ParamsList[i].get());
1678 Result = HandleUpRefs(StructType::get(Context, ParamsListTy, Packed));
1682 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
1683 /// token has already been consumed.
1685 /// ::= '[' APSINTVAL 'x' Types ']'
1686 /// ::= '<' APSINTVAL 'x' Types '>'
1687 bool LLParser::ParseArrayVectorType(PATypeHolder &Result, bool isVector) {
1688 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
1689 Lex.getAPSIntVal().getBitWidth() > 64)
1690 return TokError("expected number in address space");
1692 LocTy SizeLoc = Lex.getLoc();
1693 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
1696 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
1699 LocTy TypeLoc = Lex.getLoc();
1700 PATypeHolder EltTy(Type::getVoidTy(Context));
1701 if (ParseTypeRec(EltTy)) return true;
1703 if (EltTy->isVoidTy())
1704 return Error(TypeLoc, "array and vector element type cannot be void");
1706 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
1707 "expected end of sequential type"))
1712 return Error(SizeLoc, "zero element vector is illegal");
1713 if ((unsigned)Size != Size)
1714 return Error(SizeLoc, "size too large for vector");
1715 if (!VectorType::isValidElementType(EltTy))
1716 return Error(TypeLoc, "vector element type must be fp or integer");
1717 Result = VectorType::get(EltTy, unsigned(Size));
1719 if (!ArrayType::isValidElementType(EltTy))
1720 return Error(TypeLoc, "invalid array element type");
1721 Result = HandleUpRefs(ArrayType::get(EltTy, Size));
1726 //===----------------------------------------------------------------------===//
1727 // Function Semantic Analysis.
1728 //===----------------------------------------------------------------------===//
1730 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
1732 : P(p), F(f), FunctionNumber(functionNumber) {
1734 // Insert unnamed arguments into the NumberedVals list.
1735 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
1738 NumberedVals.push_back(AI);
1741 LLParser::PerFunctionState::~PerFunctionState() {
1742 // If there were any forward referenced non-basicblock values, delete them.
1743 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
1744 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
1745 if (!isa<BasicBlock>(I->second.first)) {
1746 I->second.first->replaceAllUsesWith(
1747 UndefValue::get(I->second.first->getType()));
1748 delete I->second.first;
1749 I->second.first = 0;
1752 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1753 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
1754 if (!isa<BasicBlock>(I->second.first)) {
1755 I->second.first->replaceAllUsesWith(
1756 UndefValue::get(I->second.first->getType()));
1757 delete I->second.first;
1758 I->second.first = 0;
1762 bool LLParser::PerFunctionState::FinishFunction() {
1763 // Check to see if someone took the address of labels in this block.
1764 if (!P.ForwardRefBlockAddresses.empty()) {
1766 if (!F.getName().empty()) {
1767 FunctionID.Kind = ValID::t_GlobalName;
1768 FunctionID.StrVal = F.getName();
1770 FunctionID.Kind = ValID::t_GlobalID;
1771 FunctionID.UIntVal = FunctionNumber;
1774 std::map<ValID, std::vector<std::pair<ValID, GlobalValue*> > >::iterator
1775 FRBAI = P.ForwardRefBlockAddresses.find(FunctionID);
1776 if (FRBAI != P.ForwardRefBlockAddresses.end()) {
1777 // Resolve all these references.
1778 if (P.ResolveForwardRefBlockAddresses(&F, FRBAI->second, this))
1781 P.ForwardRefBlockAddresses.erase(FRBAI);
1785 if (!ForwardRefVals.empty())
1786 return P.Error(ForwardRefVals.begin()->second.second,
1787 "use of undefined value '%" + ForwardRefVals.begin()->first +
1789 if (!ForwardRefValIDs.empty())
1790 return P.Error(ForwardRefValIDs.begin()->second.second,
1791 "use of undefined value '%" +
1792 Twine(ForwardRefValIDs.begin()->first) + "'");
1797 /// GetVal - Get a value with the specified name or ID, creating a
1798 /// forward reference record if needed. This can return null if the value
1799 /// exists but does not have the right type.
1800 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
1801 const Type *Ty, LocTy Loc) {
1802 // Look this name up in the normal function symbol table.
1803 Value *Val = F.getValueSymbolTable().lookup(Name);
1805 // If this is a forward reference for the value, see if we already created a
1806 // forward ref record.
1808 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1809 I = ForwardRefVals.find(Name);
1810 if (I != ForwardRefVals.end())
1811 Val = I->second.first;
1814 // If we have the value in the symbol table or fwd-ref table, return it.
1816 if (Val->getType() == Ty) return Val;
1817 if (Ty->isLabelTy())
1818 P.Error(Loc, "'%" + Name + "' is not a basic block");
1820 P.Error(Loc, "'%" + Name + "' defined with type '" +
1821 Val->getType()->getDescription() + "'");
1825 // Don't make placeholders with invalid type.
1826 if (!Ty->isFirstClassType() && !Ty->isOpaqueTy() && !Ty->isLabelTy()) {
1827 P.Error(Loc, "invalid use of a non-first-class type");
1831 // Otherwise, create a new forward reference for this value and remember it.
1833 if (Ty->isLabelTy())
1834 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
1836 FwdVal = new Argument(Ty, Name);
1838 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1842 Value *LLParser::PerFunctionState::GetVal(unsigned ID, const Type *Ty,
1844 // Look this name up in the normal function symbol table.
1845 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
1847 // If this is a forward reference for the value, see if we already created a
1848 // forward ref record.
1850 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1851 I = ForwardRefValIDs.find(ID);
1852 if (I != ForwardRefValIDs.end())
1853 Val = I->second.first;
1856 // If we have the value in the symbol table or fwd-ref table, return it.
1858 if (Val->getType() == Ty) return Val;
1859 if (Ty->isLabelTy())
1860 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
1862 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
1863 Val->getType()->getDescription() + "'");
1867 if (!Ty->isFirstClassType() && !Ty->isOpaqueTy() && !Ty->isLabelTy()) {
1868 P.Error(Loc, "invalid use of a non-first-class type");
1872 // Otherwise, create a new forward reference for this value and remember it.
1874 if (Ty->isLabelTy())
1875 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
1877 FwdVal = new Argument(Ty);
1879 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1883 /// SetInstName - After an instruction is parsed and inserted into its
1884 /// basic block, this installs its name.
1885 bool LLParser::PerFunctionState::SetInstName(int NameID,
1886 const std::string &NameStr,
1887 LocTy NameLoc, Instruction *Inst) {
1888 // If this instruction has void type, it cannot have a name or ID specified.
1889 if (Inst->getType()->isVoidTy()) {
1890 if (NameID != -1 || !NameStr.empty())
1891 return P.Error(NameLoc, "instructions returning void cannot have a name");
1895 // If this was a numbered instruction, verify that the instruction is the
1896 // expected value and resolve any forward references.
1897 if (NameStr.empty()) {
1898 // If neither a name nor an ID was specified, just use the next ID.
1900 NameID = NumberedVals.size();
1902 if (unsigned(NameID) != NumberedVals.size())
1903 return P.Error(NameLoc, "instruction expected to be numbered '%" +
1904 Twine(NumberedVals.size()) + "'");
1906 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
1907 ForwardRefValIDs.find(NameID);
1908 if (FI != ForwardRefValIDs.end()) {
1909 if (FI->second.first->getType() != Inst->getType())
1910 return P.Error(NameLoc, "instruction forward referenced with type '" +
1911 FI->second.first->getType()->getDescription() + "'");
1912 FI->second.first->replaceAllUsesWith(Inst);
1913 delete FI->second.first;
1914 ForwardRefValIDs.erase(FI);
1917 NumberedVals.push_back(Inst);
1921 // Otherwise, the instruction had a name. Resolve forward refs and set it.
1922 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1923 FI = ForwardRefVals.find(NameStr);
1924 if (FI != ForwardRefVals.end()) {
1925 if (FI->second.first->getType() != Inst->getType())
1926 return P.Error(NameLoc, "instruction forward referenced with type '" +
1927 FI->second.first->getType()->getDescription() + "'");
1928 FI->second.first->replaceAllUsesWith(Inst);
1929 delete FI->second.first;
1930 ForwardRefVals.erase(FI);
1933 // Set the name on the instruction.
1934 Inst->setName(NameStr);
1936 if (Inst->getName() != NameStr)
1937 return P.Error(NameLoc, "multiple definition of local value named '" +
1942 /// GetBB - Get a basic block with the specified name or ID, creating a
1943 /// forward reference record if needed.
1944 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
1946 return cast_or_null<BasicBlock>(GetVal(Name,
1947 Type::getLabelTy(F.getContext()), Loc));
1950 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
1951 return cast_or_null<BasicBlock>(GetVal(ID,
1952 Type::getLabelTy(F.getContext()), Loc));
1955 /// DefineBB - Define the specified basic block, which is either named or
1956 /// unnamed. If there is an error, this returns null otherwise it returns
1957 /// the block being defined.
1958 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
1962 BB = GetBB(NumberedVals.size(), Loc);
1964 BB = GetBB(Name, Loc);
1965 if (BB == 0) return 0; // Already diagnosed error.
1967 // Move the block to the end of the function. Forward ref'd blocks are
1968 // inserted wherever they happen to be referenced.
1969 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
1971 // Remove the block from forward ref sets.
1973 ForwardRefValIDs.erase(NumberedVals.size());
1974 NumberedVals.push_back(BB);
1976 // BB forward references are already in the function symbol table.
1977 ForwardRefVals.erase(Name);
1983 //===----------------------------------------------------------------------===//
1985 //===----------------------------------------------------------------------===//
1987 /// ParseValID - Parse an abstract value that doesn't necessarily have a
1988 /// type implied. For example, if we parse "4" we don't know what integer type
1989 /// it has. The value will later be combined with its type and checked for
1990 /// sanity. PFS is used to convert function-local operands of metadata (since
1991 /// metadata operands are not just parsed here but also converted to values).
1992 /// PFS can be null when we are not parsing metadata values inside a function.
1993 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
1994 ID.Loc = Lex.getLoc();
1995 switch (Lex.getKind()) {
1996 default: return TokError("expected value token");
1997 case lltok::GlobalID: // @42
1998 ID.UIntVal = Lex.getUIntVal();
1999 ID.Kind = ValID::t_GlobalID;
2001 case lltok::GlobalVar: // @foo
2002 ID.StrVal = Lex.getStrVal();
2003 ID.Kind = ValID::t_GlobalName;
2005 case lltok::LocalVarID: // %42
2006 ID.UIntVal = Lex.getUIntVal();
2007 ID.Kind = ValID::t_LocalID;
2009 case lltok::LocalVar: // %foo
2010 case lltok::StringConstant: // "foo" - FIXME: REMOVE IN LLVM 3.0
2011 ID.StrVal = Lex.getStrVal();
2012 ID.Kind = ValID::t_LocalName;
2014 case lltok::exclaim: // !42, !{...}, or !"foo"
2015 return ParseMetadataValue(ID, PFS);
2017 ID.APSIntVal = Lex.getAPSIntVal();
2018 ID.Kind = ValID::t_APSInt;
2020 case lltok::APFloat:
2021 ID.APFloatVal = Lex.getAPFloatVal();
2022 ID.Kind = ValID::t_APFloat;
2024 case lltok::kw_true:
2025 ID.ConstantVal = ConstantInt::getTrue(Context);
2026 ID.Kind = ValID::t_Constant;
2028 case lltok::kw_false:
2029 ID.ConstantVal = ConstantInt::getFalse(Context);
2030 ID.Kind = ValID::t_Constant;
2032 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2033 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2034 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2036 case lltok::lbrace: {
2037 // ValID ::= '{' ConstVector '}'
2039 SmallVector<Constant*, 16> Elts;
2040 if (ParseGlobalValueVector(Elts) ||
2041 ParseToken(lltok::rbrace, "expected end of struct constant"))
2044 ID.ConstantVal = ConstantStruct::get(Context, Elts.data(),
2045 Elts.size(), false);
2046 ID.Kind = ValID::t_Constant;
2050 // ValID ::= '<' ConstVector '>' --> Vector.
2051 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2053 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2055 SmallVector<Constant*, 16> Elts;
2056 LocTy FirstEltLoc = Lex.getLoc();
2057 if (ParseGlobalValueVector(Elts) ||
2059 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2060 ParseToken(lltok::greater, "expected end of constant"))
2063 if (isPackedStruct) {
2065 ConstantStruct::get(Context, Elts.data(), Elts.size(), true);
2066 ID.Kind = ValID::t_Constant;
2071 return Error(ID.Loc, "constant vector must not be empty");
2073 if (!Elts[0]->getType()->isIntegerTy() &&
2074 !Elts[0]->getType()->isFloatingPointTy())
2075 return Error(FirstEltLoc,
2076 "vector elements must have integer or floating point type");
2078 // Verify that all the vector elements have the same type.
2079 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2080 if (Elts[i]->getType() != Elts[0]->getType())
2081 return Error(FirstEltLoc,
2082 "vector element #" + Twine(i) +
2083 " is not of type '" + Elts[0]->getType()->getDescription());
2085 ID.ConstantVal = ConstantVector::get(Elts.data(), Elts.size());
2086 ID.Kind = ValID::t_Constant;
2089 case lltok::lsquare: { // Array Constant
2091 SmallVector<Constant*, 16> Elts;
2092 LocTy FirstEltLoc = Lex.getLoc();
2093 if (ParseGlobalValueVector(Elts) ||
2094 ParseToken(lltok::rsquare, "expected end of array constant"))
2097 // Handle empty element.
2099 // Use undef instead of an array because it's inconvenient to determine
2100 // the element type at this point, there being no elements to examine.
2101 ID.Kind = ValID::t_EmptyArray;
2105 if (!Elts[0]->getType()->isFirstClassType())
2106 return Error(FirstEltLoc, "invalid array element type: " +
2107 Elts[0]->getType()->getDescription());
2109 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2111 // Verify all elements are correct type!
2112 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2113 if (Elts[i]->getType() != Elts[0]->getType())
2114 return Error(FirstEltLoc,
2115 "array element #" + Twine(i) +
2116 " is not of type '" +Elts[0]->getType()->getDescription());
2119 ID.ConstantVal = ConstantArray::get(ATy, Elts.data(), Elts.size());
2120 ID.Kind = ValID::t_Constant;
2123 case lltok::kw_c: // c "foo"
2125 ID.ConstantVal = ConstantArray::get(Context, Lex.getStrVal(), false);
2126 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2127 ID.Kind = ValID::t_Constant;
2130 case lltok::kw_asm: {
2131 // ValID ::= 'asm' SideEffect? AlignStack? STRINGCONSTANT ',' STRINGCONSTANT
2132 bool HasSideEffect, AlignStack;
2134 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2135 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2136 ParseStringConstant(ID.StrVal) ||
2137 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2138 ParseToken(lltok::StringConstant, "expected constraint string"))
2140 ID.StrVal2 = Lex.getStrVal();
2141 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1);
2142 ID.Kind = ValID::t_InlineAsm;
2146 case lltok::kw_blockaddress: {
2147 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2151 LocTy FnLoc, LabelLoc;
2153 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2155 ParseToken(lltok::comma, "expected comma in block address expression")||
2156 ParseValID(Label) ||
2157 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2160 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2161 return Error(Fn.Loc, "expected function name in blockaddress");
2162 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2163 return Error(Label.Loc, "expected basic block name in blockaddress");
2165 // Make a global variable as a placeholder for this reference.
2166 GlobalVariable *FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context),
2167 false, GlobalValue::InternalLinkage,
2169 ForwardRefBlockAddresses[Fn].push_back(std::make_pair(Label, FwdRef));
2170 ID.ConstantVal = FwdRef;
2171 ID.Kind = ValID::t_Constant;
2175 case lltok::kw_trunc:
2176 case lltok::kw_zext:
2177 case lltok::kw_sext:
2178 case lltok::kw_fptrunc:
2179 case lltok::kw_fpext:
2180 case lltok::kw_bitcast:
2181 case lltok::kw_uitofp:
2182 case lltok::kw_sitofp:
2183 case lltok::kw_fptoui:
2184 case lltok::kw_fptosi:
2185 case lltok::kw_inttoptr:
2186 case lltok::kw_ptrtoint: {
2187 unsigned Opc = Lex.getUIntVal();
2188 PATypeHolder DestTy(Type::getVoidTy(Context));
2191 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2192 ParseGlobalTypeAndValue(SrcVal) ||
2193 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2194 ParseType(DestTy) ||
2195 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2197 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2198 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2199 SrcVal->getType()->getDescription() + "' to '" +
2200 DestTy->getDescription() + "'");
2201 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2203 ID.Kind = ValID::t_Constant;
2206 case lltok::kw_extractvalue: {
2209 SmallVector<unsigned, 4> Indices;
2210 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2211 ParseGlobalTypeAndValue(Val) ||
2212 ParseIndexList(Indices) ||
2213 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2216 if (!Val->getType()->isAggregateType())
2217 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2218 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
2220 return Error(ID.Loc, "invalid indices for extractvalue");
2222 ConstantExpr::getExtractValue(Val, Indices.data(), Indices.size());
2223 ID.Kind = ValID::t_Constant;
2226 case lltok::kw_insertvalue: {
2228 Constant *Val0, *Val1;
2229 SmallVector<unsigned, 4> Indices;
2230 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2231 ParseGlobalTypeAndValue(Val0) ||
2232 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2233 ParseGlobalTypeAndValue(Val1) ||
2234 ParseIndexList(Indices) ||
2235 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2237 if (!Val0->getType()->isAggregateType())
2238 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2239 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
2241 return Error(ID.Loc, "invalid indices for insertvalue");
2242 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1,
2243 Indices.data(), Indices.size());
2244 ID.Kind = ValID::t_Constant;
2247 case lltok::kw_icmp:
2248 case lltok::kw_fcmp: {
2249 unsigned PredVal, Opc = Lex.getUIntVal();
2250 Constant *Val0, *Val1;
2252 if (ParseCmpPredicate(PredVal, Opc) ||
2253 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2254 ParseGlobalTypeAndValue(Val0) ||
2255 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2256 ParseGlobalTypeAndValue(Val1) ||
2257 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2260 if (Val0->getType() != Val1->getType())
2261 return Error(ID.Loc, "compare operands must have the same type");
2263 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2265 if (Opc == Instruction::FCmp) {
2266 if (!Val0->getType()->isFPOrFPVectorTy())
2267 return Error(ID.Loc, "fcmp requires floating point operands");
2268 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2270 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2271 if (!Val0->getType()->isIntOrIntVectorTy() &&
2272 !Val0->getType()->isPointerTy())
2273 return Error(ID.Loc, "icmp requires pointer or integer operands");
2274 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2276 ID.Kind = ValID::t_Constant;
2280 // Binary Operators.
2282 case lltok::kw_fadd:
2284 case lltok::kw_fsub:
2286 case lltok::kw_fmul:
2287 case lltok::kw_udiv:
2288 case lltok::kw_sdiv:
2289 case lltok::kw_fdiv:
2290 case lltok::kw_urem:
2291 case lltok::kw_srem:
2292 case lltok::kw_frem: {
2296 unsigned Opc = Lex.getUIntVal();
2297 Constant *Val0, *Val1;
2299 LocTy ModifierLoc = Lex.getLoc();
2300 if (Opc == Instruction::Add ||
2301 Opc == Instruction::Sub ||
2302 Opc == Instruction::Mul) {
2303 if (EatIfPresent(lltok::kw_nuw))
2305 if (EatIfPresent(lltok::kw_nsw)) {
2307 if (EatIfPresent(lltok::kw_nuw))
2310 } else if (Opc == Instruction::SDiv) {
2311 if (EatIfPresent(lltok::kw_exact))
2314 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2315 ParseGlobalTypeAndValue(Val0) ||
2316 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2317 ParseGlobalTypeAndValue(Val1) ||
2318 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2320 if (Val0->getType() != Val1->getType())
2321 return Error(ID.Loc, "operands of constexpr must have same type");
2322 if (!Val0->getType()->isIntOrIntVectorTy()) {
2324 return Error(ModifierLoc, "nuw only applies to integer operations");
2326 return Error(ModifierLoc, "nsw only applies to integer operations");
2328 // Check that the type is valid for the operator.
2330 case Instruction::Add:
2331 case Instruction::Sub:
2332 case Instruction::Mul:
2333 case Instruction::UDiv:
2334 case Instruction::SDiv:
2335 case Instruction::URem:
2336 case Instruction::SRem:
2337 if (!Val0->getType()->isIntOrIntVectorTy())
2338 return Error(ID.Loc, "constexpr requires integer operands");
2340 case Instruction::FAdd:
2341 case Instruction::FSub:
2342 case Instruction::FMul:
2343 case Instruction::FDiv:
2344 case Instruction::FRem:
2345 if (!Val0->getType()->isFPOrFPVectorTy())
2346 return Error(ID.Loc, "constexpr requires fp operands");
2348 default: llvm_unreachable("Unknown binary operator!");
2351 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2352 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2353 if (Exact) Flags |= SDivOperator::IsExact;
2354 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2356 ID.Kind = ValID::t_Constant;
2360 // Logical Operations
2362 case lltok::kw_lshr:
2363 case lltok::kw_ashr:
2366 case lltok::kw_xor: {
2367 unsigned Opc = Lex.getUIntVal();
2368 Constant *Val0, *Val1;
2370 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2371 ParseGlobalTypeAndValue(Val0) ||
2372 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2373 ParseGlobalTypeAndValue(Val1) ||
2374 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2376 if (Val0->getType() != Val1->getType())
2377 return Error(ID.Loc, "operands of constexpr must have same type");
2378 if (!Val0->getType()->isIntOrIntVectorTy())
2379 return Error(ID.Loc,
2380 "constexpr requires integer or integer vector operands");
2381 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2382 ID.Kind = ValID::t_Constant;
2386 case lltok::kw_getelementptr:
2387 case lltok::kw_shufflevector:
2388 case lltok::kw_insertelement:
2389 case lltok::kw_extractelement:
2390 case lltok::kw_select: {
2391 unsigned Opc = Lex.getUIntVal();
2392 SmallVector<Constant*, 16> Elts;
2393 bool InBounds = false;
2395 if (Opc == Instruction::GetElementPtr)
2396 InBounds = EatIfPresent(lltok::kw_inbounds);
2397 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2398 ParseGlobalValueVector(Elts) ||
2399 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2402 if (Opc == Instruction::GetElementPtr) {
2403 if (Elts.size() == 0 || !Elts[0]->getType()->isPointerTy())
2404 return Error(ID.Loc, "getelementptr requires pointer operand");
2406 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(),
2407 (Value**)(Elts.data() + 1),
2409 return Error(ID.Loc, "invalid indices for getelementptr");
2410 ID.ConstantVal = InBounds ?
2411 ConstantExpr::getInBoundsGetElementPtr(Elts[0],
2414 ConstantExpr::getGetElementPtr(Elts[0],
2415 Elts.data() + 1, Elts.size() - 1);
2416 } else if (Opc == Instruction::Select) {
2417 if (Elts.size() != 3)
2418 return Error(ID.Loc, "expected three operands to select");
2419 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2421 return Error(ID.Loc, Reason);
2422 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2423 } else if (Opc == Instruction::ShuffleVector) {
2424 if (Elts.size() != 3)
2425 return Error(ID.Loc, "expected three operands to shufflevector");
2426 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2427 return Error(ID.Loc, "invalid operands to shufflevector");
2429 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2430 } else if (Opc == Instruction::ExtractElement) {
2431 if (Elts.size() != 2)
2432 return Error(ID.Loc, "expected two operands to extractelement");
2433 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2434 return Error(ID.Loc, "invalid extractelement operands");
2435 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2437 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2438 if (Elts.size() != 3)
2439 return Error(ID.Loc, "expected three operands to insertelement");
2440 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2441 return Error(ID.Loc, "invalid insertelement operands");
2443 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2446 ID.Kind = ValID::t_Constant;
2455 /// ParseGlobalValue - Parse a global value with the specified type.
2456 bool LLParser::ParseGlobalValue(const Type *Ty, Constant *&C) {
2460 bool Parsed = ParseValID(ID) ||
2461 ConvertValIDToValue(Ty, ID, V, NULL);
2462 if (V && !(C = dyn_cast<Constant>(V)))
2463 return Error(ID.Loc, "global values must be constants");
2467 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2468 PATypeHolder Type(Type::getVoidTy(Context));
2469 return ParseType(Type) ||
2470 ParseGlobalValue(Type, V);
2473 /// ParseGlobalValueVector
2475 /// ::= TypeAndValue (',' TypeAndValue)*
2476 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts) {
2478 if (Lex.getKind() == lltok::rbrace ||
2479 Lex.getKind() == lltok::rsquare ||
2480 Lex.getKind() == lltok::greater ||
2481 Lex.getKind() == lltok::rparen)
2485 if (ParseGlobalTypeAndValue(C)) return true;
2488 while (EatIfPresent(lltok::comma)) {
2489 if (ParseGlobalTypeAndValue(C)) return true;
2496 bool LLParser::ParseMetadataListValue(ValID &ID, PerFunctionState *PFS) {
2497 assert(Lex.getKind() == lltok::lbrace);
2500 SmallVector<Value*, 16> Elts;
2501 if (ParseMDNodeVector(Elts, PFS) ||
2502 ParseToken(lltok::rbrace, "expected end of metadata node"))
2505 ID.MDNodeVal = MDNode::get(Context, Elts.data(), Elts.size());
2506 ID.Kind = ValID::t_MDNode;
2510 /// ParseMetadataValue
2514 bool LLParser::ParseMetadataValue(ValID &ID, PerFunctionState *PFS) {
2515 assert(Lex.getKind() == lltok::exclaim);
2520 if (Lex.getKind() == lltok::lbrace)
2521 return ParseMetadataListValue(ID, PFS);
2523 // Standalone metadata reference
2525 if (Lex.getKind() == lltok::APSInt) {
2526 if (ParseMDNodeID(ID.MDNodeVal)) return true;
2527 ID.Kind = ValID::t_MDNode;
2532 // ::= '!' STRINGCONSTANT
2533 if (ParseMDString(ID.MDStringVal)) return true;
2534 ID.Kind = ValID::t_MDString;
2539 //===----------------------------------------------------------------------===//
2540 // Function Parsing.
2541 //===----------------------------------------------------------------------===//
2543 bool LLParser::ConvertValIDToValue(const Type *Ty, ValID &ID, Value *&V,
2544 PerFunctionState *PFS) {
2545 if (Ty->isFunctionTy())
2546 return Error(ID.Loc, "functions are not values, refer to them as pointers");
2549 default: llvm_unreachable("Unknown ValID!");
2550 case ValID::t_LocalID:
2551 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2552 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
2554 case ValID::t_LocalName:
2555 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2556 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
2558 case ValID::t_InlineAsm: {
2559 const PointerType *PTy = dyn_cast<PointerType>(Ty);
2560 const FunctionType *FTy =
2561 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
2562 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
2563 return Error(ID.Loc, "invalid type for inline asm constraint string");
2564 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1, ID.UIntVal>>1);
2567 case ValID::t_MDNode:
2568 if (!Ty->isMetadataTy())
2569 return Error(ID.Loc, "metadata value must have metadata type");
2572 case ValID::t_MDString:
2573 if (!Ty->isMetadataTy())
2574 return Error(ID.Loc, "metadata value must have metadata type");
2577 case ValID::t_GlobalName:
2578 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
2580 case ValID::t_GlobalID:
2581 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
2583 case ValID::t_APSInt:
2584 if (!Ty->isIntegerTy())
2585 return Error(ID.Loc, "integer constant must have integer type");
2586 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
2587 V = ConstantInt::get(Context, ID.APSIntVal);
2589 case ValID::t_APFloat:
2590 if (!Ty->isFloatingPointTy() ||
2591 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
2592 return Error(ID.Loc, "floating point constant invalid for type");
2594 // The lexer has no type info, so builds all float and double FP constants
2595 // as double. Fix this here. Long double does not need this.
2596 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble &&
2599 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
2602 V = ConstantFP::get(Context, ID.APFloatVal);
2604 if (V->getType() != Ty)
2605 return Error(ID.Loc, "floating point constant does not have type '" +
2606 Ty->getDescription() + "'");
2610 if (!Ty->isPointerTy())
2611 return Error(ID.Loc, "null must be a pointer type");
2612 V = ConstantPointerNull::get(cast<PointerType>(Ty));
2614 case ValID::t_Undef:
2615 // FIXME: LabelTy should not be a first-class type.
2616 if ((!Ty->isFirstClassType() || Ty->isLabelTy()) &&
2618 return Error(ID.Loc, "invalid type for undef constant");
2619 V = UndefValue::get(Ty);
2621 case ValID::t_EmptyArray:
2622 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
2623 return Error(ID.Loc, "invalid empty array initializer");
2624 V = UndefValue::get(Ty);
2627 // FIXME: LabelTy should not be a first-class type.
2628 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2629 return Error(ID.Loc, "invalid type for null constant");
2630 V = Constant::getNullValue(Ty);
2632 case ValID::t_Constant:
2633 if (ID.ConstantVal->getType() != Ty)
2634 return Error(ID.Loc, "constant expression type mismatch");
2641 bool LLParser::ParseValue(const Type *Ty, Value *&V, PerFunctionState &PFS) {
2644 return ParseValID(ID, &PFS) ||
2645 ConvertValIDToValue(Ty, ID, V, &PFS);
2648 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState &PFS) {
2649 PATypeHolder T(Type::getVoidTy(Context));
2650 return ParseType(T) ||
2651 ParseValue(T, V, PFS);
2654 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
2655 PerFunctionState &PFS) {
2658 if (ParseTypeAndValue(V, PFS)) return true;
2659 if (!isa<BasicBlock>(V))
2660 return Error(Loc, "expected a basic block");
2661 BB = cast<BasicBlock>(V);
2667 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
2668 /// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
2669 /// OptionalAlign OptGC
2670 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
2671 // Parse the linkage.
2672 LocTy LinkageLoc = Lex.getLoc();
2675 unsigned Visibility, RetAttrs;
2677 LocTy UnnamedAddrLoc;
2679 PATypeHolder RetType(Type::getVoidTy(Context));
2680 LocTy RetTypeLoc = Lex.getLoc();
2681 if (ParseOptionalLinkage(Linkage) ||
2682 ParseOptionalVisibility(Visibility) ||
2683 ParseOptionalCallingConv(CC) ||
2684 ParseOptionalAttrs(RetAttrs, 1) ||
2685 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
2687 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
2690 if (!isDefine && UnnamedAddr)
2691 return Error(UnnamedAddrLoc, "only definitions can have unnamed_addr");
2693 // Verify that the linkage is ok.
2694 switch ((GlobalValue::LinkageTypes)Linkage) {
2695 case GlobalValue::ExternalLinkage:
2696 break; // always ok.
2697 case GlobalValue::DLLImportLinkage:
2698 case GlobalValue::ExternalWeakLinkage:
2700 return Error(LinkageLoc, "invalid linkage for function definition");
2702 case GlobalValue::PrivateLinkage:
2703 case GlobalValue::LinkerPrivateLinkage:
2704 case GlobalValue::LinkerPrivateWeakLinkage:
2705 case GlobalValue::LinkerPrivateWeakDefAutoLinkage:
2706 case GlobalValue::InternalLinkage:
2707 case GlobalValue::AvailableExternallyLinkage:
2708 case GlobalValue::LinkOnceAnyLinkage:
2709 case GlobalValue::LinkOnceODRLinkage:
2710 case GlobalValue::WeakAnyLinkage:
2711 case GlobalValue::WeakODRLinkage:
2712 case GlobalValue::DLLExportLinkage:
2714 return Error(LinkageLoc, "invalid linkage for function declaration");
2716 case GlobalValue::AppendingLinkage:
2717 case GlobalValue::CommonLinkage:
2718 return Error(LinkageLoc, "invalid function linkage type");
2721 if (!FunctionType::isValidReturnType(RetType) ||
2722 RetType->isOpaqueTy())
2723 return Error(RetTypeLoc, "invalid function return type");
2725 LocTy NameLoc = Lex.getLoc();
2727 std::string FunctionName;
2728 if (Lex.getKind() == lltok::GlobalVar) {
2729 FunctionName = Lex.getStrVal();
2730 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
2731 unsigned NameID = Lex.getUIntVal();
2733 if (NameID != NumberedVals.size())
2734 return TokError("function expected to be numbered '%" +
2735 Twine(NumberedVals.size()) + "'");
2737 return TokError("expected function name");
2742 if (Lex.getKind() != lltok::lparen)
2743 return TokError("expected '(' in function argument list");
2745 std::vector<ArgInfo> ArgList;
2748 std::string Section;
2752 if (ParseArgumentList(ArgList, isVarArg, false) ||
2753 ParseOptionalAttrs(FuncAttrs, 2) ||
2754 (EatIfPresent(lltok::kw_section) &&
2755 ParseStringConstant(Section)) ||
2756 ParseOptionalAlignment(Alignment) ||
2757 (EatIfPresent(lltok::kw_gc) &&
2758 ParseStringConstant(GC)))
2761 // If the alignment was parsed as an attribute, move to the alignment field.
2762 if (FuncAttrs & Attribute::Alignment) {
2763 Alignment = Attribute::getAlignmentFromAttrs(FuncAttrs);
2764 FuncAttrs &= ~Attribute::Alignment;
2767 // Okay, if we got here, the function is syntactically valid. Convert types
2768 // and do semantic checks.
2769 std::vector<const Type*> ParamTypeList;
2770 SmallVector<AttributeWithIndex, 8> Attrs;
2771 // FIXME : In 3.0, stop accepting zext, sext and inreg as optional function
2773 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
2774 if (FuncAttrs & ObsoleteFuncAttrs) {
2775 RetAttrs |= FuncAttrs & ObsoleteFuncAttrs;
2776 FuncAttrs &= ~ObsoleteFuncAttrs;
2779 if (RetAttrs != Attribute::None)
2780 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
2782 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2783 ParamTypeList.push_back(ArgList[i].Type);
2784 if (ArgList[i].Attrs != Attribute::None)
2785 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
2788 if (FuncAttrs != Attribute::None)
2789 Attrs.push_back(AttributeWithIndex::get(~0, FuncAttrs));
2791 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
2793 if (PAL.paramHasAttr(1, Attribute::StructRet) && !RetType->isVoidTy())
2794 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
2796 const FunctionType *FT =
2797 FunctionType::get(RetType, ParamTypeList, isVarArg);
2798 const PointerType *PFT = PointerType::getUnqual(FT);
2801 if (!FunctionName.empty()) {
2802 // If this was a definition of a forward reference, remove the definition
2803 // from the forward reference table and fill in the forward ref.
2804 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
2805 ForwardRefVals.find(FunctionName);
2806 if (FRVI != ForwardRefVals.end()) {
2807 Fn = M->getFunction(FunctionName);
2808 if (Fn->getType() != PFT)
2809 return Error(FRVI->second.second, "invalid forward reference to "
2810 "function '" + FunctionName + "' with wrong type!");
2812 ForwardRefVals.erase(FRVI);
2813 } else if ((Fn = M->getFunction(FunctionName))) {
2814 // If this function already exists in the symbol table, then it is
2815 // multiply defined. We accept a few cases for old backwards compat.
2816 // FIXME: Remove this stuff for LLVM 3.0.
2817 if (Fn->getType() != PFT || Fn->getAttributes() != PAL ||
2818 (!Fn->isDeclaration() && isDefine)) {
2819 // If the redefinition has different type or different attributes,
2820 // reject it. If both have bodies, reject it.
2821 return Error(NameLoc, "invalid redefinition of function '" +
2822 FunctionName + "'");
2823 } else if (Fn->isDeclaration()) {
2824 // Make sure to strip off any argument names so we can't get conflicts.
2825 for (Function::arg_iterator AI = Fn->arg_begin(), AE = Fn->arg_end();
2829 } else if (M->getNamedValue(FunctionName)) {
2830 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
2834 // If this is a definition of a forward referenced function, make sure the
2836 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
2837 = ForwardRefValIDs.find(NumberedVals.size());
2838 if (I != ForwardRefValIDs.end()) {
2839 Fn = cast<Function>(I->second.first);
2840 if (Fn->getType() != PFT)
2841 return Error(NameLoc, "type of definition and forward reference of '@" +
2842 Twine(NumberedVals.size()) + "' disagree");
2843 ForwardRefValIDs.erase(I);
2848 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
2849 else // Move the forward-reference to the correct spot in the module.
2850 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
2852 if (FunctionName.empty())
2853 NumberedVals.push_back(Fn);
2855 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
2856 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
2857 Fn->setCallingConv(CC);
2858 Fn->setAttributes(PAL);
2859 Fn->setUnnamedAddr(UnnamedAddr);
2860 Fn->setAlignment(Alignment);
2861 Fn->setSection(Section);
2862 if (!GC.empty()) Fn->setGC(GC.c_str());
2864 // Add all of the arguments we parsed to the function.
2865 Function::arg_iterator ArgIt = Fn->arg_begin();
2866 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
2867 // If we run out of arguments in the Function prototype, exit early.
2868 // FIXME: REMOVE THIS IN LLVM 3.0, this is just for the mismatch case above.
2869 if (ArgIt == Fn->arg_end()) break;
2871 // If the argument has a name, insert it into the argument symbol table.
2872 if (ArgList[i].Name.empty()) continue;
2874 // Set the name, if it conflicted, it will be auto-renamed.
2875 ArgIt->setName(ArgList[i].Name);
2877 if (ArgIt->getName() != ArgList[i].Name)
2878 return Error(ArgList[i].Loc, "redefinition of argument '%" +
2879 ArgList[i].Name + "'");
2886 /// ParseFunctionBody
2887 /// ::= '{' BasicBlock+ '}'
2888 /// ::= 'begin' BasicBlock+ 'end' // FIXME: remove in LLVM 3.0
2890 bool LLParser::ParseFunctionBody(Function &Fn) {
2891 if (Lex.getKind() != lltok::lbrace && Lex.getKind() != lltok::kw_begin)
2892 return TokError("expected '{' in function body");
2893 Lex.Lex(); // eat the {.
2895 int FunctionNumber = -1;
2896 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
2898 PerFunctionState PFS(*this, Fn, FunctionNumber);
2900 // We need at least one basic block.
2901 if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_end)
2902 return TokError("function body requires at least one basic block");
2904 while (Lex.getKind() != lltok::rbrace && Lex.getKind() != lltok::kw_end)
2905 if (ParseBasicBlock(PFS)) return true;
2910 // Verify function is ok.
2911 return PFS.FinishFunction();
2915 /// ::= LabelStr? Instruction*
2916 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
2917 // If this basic block starts out with a name, remember it.
2919 LocTy NameLoc = Lex.getLoc();
2920 if (Lex.getKind() == lltok::LabelStr) {
2921 Name = Lex.getStrVal();
2925 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
2926 if (BB == 0) return true;
2928 std::string NameStr;
2930 // Parse the instructions in this block until we get a terminator.
2932 SmallVector<std::pair<unsigned, MDNode *>, 4> MetadataOnInst;
2934 // This instruction may have three possibilities for a name: a) none
2935 // specified, b) name specified "%foo =", c) number specified: "%4 =".
2936 LocTy NameLoc = Lex.getLoc();
2940 if (Lex.getKind() == lltok::LocalVarID) {
2941 NameID = Lex.getUIntVal();
2943 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
2945 } else if (Lex.getKind() == lltok::LocalVar ||
2946 // FIXME: REMOVE IN LLVM 3.0
2947 Lex.getKind() == lltok::StringConstant) {
2948 NameStr = Lex.getStrVal();
2950 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
2954 switch (ParseInstruction(Inst, BB, PFS)) {
2955 default: assert(0 && "Unknown ParseInstruction result!");
2956 case InstError: return true;
2958 BB->getInstList().push_back(Inst);
2960 // With a normal result, we check to see if the instruction is followed by
2961 // a comma and metadata.
2962 if (EatIfPresent(lltok::comma))
2963 if (ParseInstructionMetadata(Inst, &PFS))
2966 case InstExtraComma:
2967 BB->getInstList().push_back(Inst);
2969 // If the instruction parser ate an extra comma at the end of it, it
2970 // *must* be followed by metadata.
2971 if (ParseInstructionMetadata(Inst, &PFS))
2976 // Set the name on the instruction.
2977 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
2978 } while (!isa<TerminatorInst>(Inst));
2983 //===----------------------------------------------------------------------===//
2984 // Instruction Parsing.
2985 //===----------------------------------------------------------------------===//
2987 /// ParseInstruction - Parse one of the many different instructions.
2989 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
2990 PerFunctionState &PFS) {
2991 lltok::Kind Token = Lex.getKind();
2992 if (Token == lltok::Eof)
2993 return TokError("found end of file when expecting more instructions");
2994 LocTy Loc = Lex.getLoc();
2995 unsigned KeywordVal = Lex.getUIntVal();
2996 Lex.Lex(); // Eat the keyword.
2999 default: return Error(Loc, "expected instruction opcode");
3000 // Terminator Instructions.
3001 case lltok::kw_unwind: Inst = new UnwindInst(Context); return false;
3002 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
3003 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
3004 case lltok::kw_br: return ParseBr(Inst, PFS);
3005 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
3006 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
3007 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
3008 // Binary Operators.
3011 case lltok::kw_mul: {
3014 LocTy ModifierLoc = Lex.getLoc();
3015 if (EatIfPresent(lltok::kw_nuw))
3017 if (EatIfPresent(lltok::kw_nsw)) {
3019 if (EatIfPresent(lltok::kw_nuw))
3022 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 1);
3024 if (!Inst->getType()->isIntOrIntVectorTy()) {
3026 return Error(ModifierLoc, "nuw only applies to integer operations");
3028 return Error(ModifierLoc, "nsw only applies to integer operations");
3031 cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
3033 cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
3037 case lltok::kw_fadd:
3038 case lltok::kw_fsub:
3039 case lltok::kw_fmul: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
3041 case lltok::kw_sdiv: {
3043 if (EatIfPresent(lltok::kw_exact))
3045 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 1);
3048 cast<BinaryOperator>(Inst)->setIsExact(true);
3052 case lltok::kw_udiv:
3053 case lltok::kw_urem:
3054 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
3055 case lltok::kw_fdiv:
3056 case lltok::kw_frem: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
3058 case lltok::kw_lshr:
3059 case lltok::kw_ashr:
3062 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
3063 case lltok::kw_icmp:
3064 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
3066 case lltok::kw_trunc:
3067 case lltok::kw_zext:
3068 case lltok::kw_sext:
3069 case lltok::kw_fptrunc:
3070 case lltok::kw_fpext:
3071 case lltok::kw_bitcast:
3072 case lltok::kw_uitofp:
3073 case lltok::kw_sitofp:
3074 case lltok::kw_fptoui:
3075 case lltok::kw_fptosi:
3076 case lltok::kw_inttoptr:
3077 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
3079 case lltok::kw_select: return ParseSelect(Inst, PFS);
3080 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
3081 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
3082 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
3083 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
3084 case lltok::kw_phi: return ParsePHI(Inst, PFS);
3085 case lltok::kw_call: return ParseCall(Inst, PFS, false);
3086 case lltok::kw_tail: return ParseCall(Inst, PFS, true);
3088 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
3089 case lltok::kw_malloc: return ParseAlloc(Inst, PFS, BB, false);
3090 case lltok::kw_free: return ParseFree(Inst, PFS, BB);
3091 case lltok::kw_load: return ParseLoad(Inst, PFS, false);
3092 case lltok::kw_store: return ParseStore(Inst, PFS, false);
3093 case lltok::kw_volatile:
3094 if (EatIfPresent(lltok::kw_load))
3095 return ParseLoad(Inst, PFS, true);
3096 else if (EatIfPresent(lltok::kw_store))
3097 return ParseStore(Inst, PFS, true);
3099 return TokError("expected 'load' or 'store'");
3100 case lltok::kw_getresult: return ParseGetResult(Inst, PFS);
3101 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
3102 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
3103 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
3107 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
3108 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
3109 if (Opc == Instruction::FCmp) {
3110 switch (Lex.getKind()) {
3111 default: TokError("expected fcmp predicate (e.g. 'oeq')");
3112 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
3113 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
3114 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
3115 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
3116 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
3117 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
3118 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
3119 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
3120 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
3121 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
3122 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
3123 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
3124 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
3125 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
3126 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
3127 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
3130 switch (Lex.getKind()) {
3131 default: TokError("expected icmp predicate (e.g. 'eq')");
3132 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
3133 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
3134 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
3135 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
3136 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
3137 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
3138 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
3139 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
3140 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
3141 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3148 //===----------------------------------------------------------------------===//
3149 // Terminator Instructions.
3150 //===----------------------------------------------------------------------===//
3152 /// ParseRet - Parse a return instruction.
3153 /// ::= 'ret' void (',' !dbg, !1)*
3154 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
3155 /// ::= 'ret' TypeAndValue (',' TypeAndValue)+ (',' !dbg, !1)*
3156 /// [[obsolete: LLVM 3.0]]
3157 int LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3158 PerFunctionState &PFS) {
3159 PATypeHolder Ty(Type::getVoidTy(Context));
3160 if (ParseType(Ty, true /*void allowed*/)) return true;
3162 if (Ty->isVoidTy()) {
3163 Inst = ReturnInst::Create(Context);
3168 if (ParseValue(Ty, RV, PFS)) return true;
3170 bool ExtraComma = false;
3171 if (EatIfPresent(lltok::comma)) {
3172 // Parse optional custom metadata, e.g. !dbg
3173 if (Lex.getKind() == lltok::MetadataVar) {
3176 // The normal case is one return value.
3177 // FIXME: LLVM 3.0 remove MRV support for 'ret i32 1, i32 2', requiring
3178 // use of 'ret {i32,i32} {i32 1, i32 2}'
3179 SmallVector<Value*, 8> RVs;
3183 // If optional custom metadata, e.g. !dbg is seen then this is the
3185 if (Lex.getKind() == lltok::MetadataVar)
3187 if (ParseTypeAndValue(RV, PFS)) return true;
3189 } while (EatIfPresent(lltok::comma));
3191 RV = UndefValue::get(PFS.getFunction().getReturnType());
3192 for (unsigned i = 0, e = RVs.size(); i != e; ++i) {
3193 Instruction *I = InsertValueInst::Create(RV, RVs[i], i, "mrv");
3194 BB->getInstList().push_back(I);
3200 Inst = ReturnInst::Create(Context, RV);
3201 return ExtraComma ? InstExtraComma : InstNormal;
3206 /// ::= 'br' TypeAndValue
3207 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3208 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
3211 BasicBlock *Op1, *Op2;
3212 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
3214 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
3215 Inst = BranchInst::Create(BB);
3219 if (Op0->getType() != Type::getInt1Ty(Context))
3220 return Error(Loc, "branch condition must have 'i1' type");
3222 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
3223 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
3224 ParseToken(lltok::comma, "expected ',' after true destination") ||
3225 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
3228 Inst = BranchInst::Create(Op1, Op2, Op0);
3234 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
3236 /// ::= (TypeAndValue ',' TypeAndValue)*
3237 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
3238 LocTy CondLoc, BBLoc;
3240 BasicBlock *DefaultBB;
3241 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
3242 ParseToken(lltok::comma, "expected ',' after switch condition") ||
3243 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
3244 ParseToken(lltok::lsquare, "expected '[' with switch table"))
3247 if (!Cond->getType()->isIntegerTy())
3248 return Error(CondLoc, "switch condition must have integer type");
3250 // Parse the jump table pairs.
3251 SmallPtrSet<Value*, 32> SeenCases;
3252 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
3253 while (Lex.getKind() != lltok::rsquare) {
3257 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
3258 ParseToken(lltok::comma, "expected ',' after case value") ||
3259 ParseTypeAndBasicBlock(DestBB, PFS))
3262 if (!SeenCases.insert(Constant))
3263 return Error(CondLoc, "duplicate case value in switch");
3264 if (!isa<ConstantInt>(Constant))
3265 return Error(CondLoc, "case value is not a constant integer");
3267 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
3270 Lex.Lex(); // Eat the ']'.
3272 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
3273 for (unsigned i = 0, e = Table.size(); i != e; ++i)
3274 SI->addCase(Table[i].first, Table[i].second);
3281 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
3282 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
3285 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
3286 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
3287 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
3290 if (!Address->getType()->isPointerTy())
3291 return Error(AddrLoc, "indirectbr address must have pointer type");
3293 // Parse the destination list.
3294 SmallVector<BasicBlock*, 16> DestList;
3296 if (Lex.getKind() != lltok::rsquare) {
3298 if (ParseTypeAndBasicBlock(DestBB, PFS))
3300 DestList.push_back(DestBB);
3302 while (EatIfPresent(lltok::comma)) {
3303 if (ParseTypeAndBasicBlock(DestBB, PFS))
3305 DestList.push_back(DestBB);
3309 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
3312 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
3313 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
3314 IBI->addDestination(DestList[i]);
3321 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3322 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3323 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3324 LocTy CallLoc = Lex.getLoc();
3325 unsigned RetAttrs, FnAttrs;
3327 PATypeHolder RetType(Type::getVoidTy(Context));
3330 SmallVector<ParamInfo, 16> ArgList;
3332 BasicBlock *NormalBB, *UnwindBB;
3333 if (ParseOptionalCallingConv(CC) ||
3334 ParseOptionalAttrs(RetAttrs, 1) ||
3335 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3336 ParseValID(CalleeID) ||
3337 ParseParameterList(ArgList, PFS) ||
3338 ParseOptionalAttrs(FnAttrs, 2) ||
3339 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3340 ParseTypeAndBasicBlock(NormalBB, PFS) ||
3341 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3342 ParseTypeAndBasicBlock(UnwindBB, PFS))
3345 // If RetType is a non-function pointer type, then this is the short syntax
3346 // for the call, which means that RetType is just the return type. Infer the
3347 // rest of the function argument types from the arguments that are present.
3348 const PointerType *PFTy = 0;
3349 const FunctionType *Ty = 0;
3350 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3351 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3352 // Pull out the types of all of the arguments...
3353 std::vector<const Type*> ParamTypes;
3354 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3355 ParamTypes.push_back(ArgList[i].V->getType());
3357 if (!FunctionType::isValidReturnType(RetType))
3358 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3360 Ty = FunctionType::get(RetType, ParamTypes, false);
3361 PFTy = PointerType::getUnqual(Ty);
3364 // Look up the callee.
3366 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3368 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
3369 // function attributes.
3370 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
3371 if (FnAttrs & ObsoleteFuncAttrs) {
3372 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
3373 FnAttrs &= ~ObsoleteFuncAttrs;
3376 // Set up the Attributes for the function.
3377 SmallVector<AttributeWithIndex, 8> Attrs;
3378 if (RetAttrs != Attribute::None)
3379 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3381 SmallVector<Value*, 8> Args;
3383 // Loop through FunctionType's arguments and ensure they are specified
3384 // correctly. Also, gather any parameter attributes.
3385 FunctionType::param_iterator I = Ty->param_begin();
3386 FunctionType::param_iterator E = Ty->param_end();
3387 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3388 const Type *ExpectedTy = 0;
3391 } else if (!Ty->isVarArg()) {
3392 return Error(ArgList[i].Loc, "too many arguments specified");
3395 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3396 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3397 ExpectedTy->getDescription() + "'");
3398 Args.push_back(ArgList[i].V);
3399 if (ArgList[i].Attrs != Attribute::None)
3400 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3404 return Error(CallLoc, "not enough parameters specified for call");
3406 if (FnAttrs != Attribute::None)
3407 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3409 // Finish off the Attributes and check them
3410 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3412 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB,
3413 Args.begin(), Args.end());
3414 II->setCallingConv(CC);
3415 II->setAttributes(PAL);
3422 //===----------------------------------------------------------------------===//
3423 // Binary Operators.
3424 //===----------------------------------------------------------------------===//
3427 /// ::= ArithmeticOps TypeAndValue ',' Value
3429 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3430 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3431 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3432 unsigned Opc, unsigned OperandType) {
3433 LocTy Loc; Value *LHS, *RHS;
3434 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3435 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3436 ParseValue(LHS->getType(), RHS, PFS))
3440 switch (OperandType) {
3441 default: llvm_unreachable("Unknown operand type!");
3442 case 0: // int or FP.
3443 Valid = LHS->getType()->isIntOrIntVectorTy() ||
3444 LHS->getType()->isFPOrFPVectorTy();
3446 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
3447 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
3451 return Error(Loc, "invalid operand type for instruction");
3453 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3458 /// ::= ArithmeticOps TypeAndValue ',' Value {
3459 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3461 LocTy Loc; Value *LHS, *RHS;
3462 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3463 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3464 ParseValue(LHS->getType(), RHS, PFS))
3467 if (!LHS->getType()->isIntOrIntVectorTy())
3468 return Error(Loc,"instruction requires integer or integer vector operands");
3470 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3476 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3477 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3478 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3480 // Parse the integer/fp comparison predicate.
3484 if (ParseCmpPredicate(Pred, Opc) ||
3485 ParseTypeAndValue(LHS, Loc, PFS) ||
3486 ParseToken(lltok::comma, "expected ',' after compare value") ||
3487 ParseValue(LHS->getType(), RHS, PFS))
3490 if (Opc == Instruction::FCmp) {
3491 if (!LHS->getType()->isFPOrFPVectorTy())
3492 return Error(Loc, "fcmp requires floating point operands");
3493 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3495 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
3496 if (!LHS->getType()->isIntOrIntVectorTy() &&
3497 !LHS->getType()->isPointerTy())
3498 return Error(Loc, "icmp requires integer operands");
3499 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3504 //===----------------------------------------------------------------------===//
3505 // Other Instructions.
3506 //===----------------------------------------------------------------------===//
3510 /// ::= CastOpc TypeAndValue 'to' Type
3511 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
3513 LocTy Loc; Value *Op;
3514 PATypeHolder DestTy(Type::getVoidTy(Context));
3515 if (ParseTypeAndValue(Op, Loc, PFS) ||
3516 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
3520 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
3521 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
3522 return Error(Loc, "invalid cast opcode for cast from '" +
3523 Op->getType()->getDescription() + "' to '" +
3524 DestTy->getDescription() + "'");
3526 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
3531 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3532 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
3534 Value *Op0, *Op1, *Op2;
3535 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3536 ParseToken(lltok::comma, "expected ',' after select condition") ||
3537 ParseTypeAndValue(Op1, PFS) ||
3538 ParseToken(lltok::comma, "expected ',' after select value") ||
3539 ParseTypeAndValue(Op2, PFS))
3542 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
3543 return Error(Loc, Reason);
3545 Inst = SelectInst::Create(Op0, Op1, Op2);
3550 /// ::= 'va_arg' TypeAndValue ',' Type
3551 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
3553 PATypeHolder EltTy(Type::getVoidTy(Context));
3555 if (ParseTypeAndValue(Op, PFS) ||
3556 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
3557 ParseType(EltTy, TypeLoc))
3560 if (!EltTy->isFirstClassType())
3561 return Error(TypeLoc, "va_arg requires operand with first class type");
3563 Inst = new VAArgInst(Op, EltTy);
3567 /// ParseExtractElement
3568 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
3569 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
3572 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3573 ParseToken(lltok::comma, "expected ',' after extract value") ||
3574 ParseTypeAndValue(Op1, PFS))
3577 if (!ExtractElementInst::isValidOperands(Op0, Op1))
3578 return Error(Loc, "invalid extractelement operands");
3580 Inst = ExtractElementInst::Create(Op0, Op1);
3584 /// ParseInsertElement
3585 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3586 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
3588 Value *Op0, *Op1, *Op2;
3589 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3590 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3591 ParseTypeAndValue(Op1, PFS) ||
3592 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3593 ParseTypeAndValue(Op2, PFS))
3596 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
3597 return Error(Loc, "invalid insertelement operands");
3599 Inst = InsertElementInst::Create(Op0, Op1, Op2);
3603 /// ParseShuffleVector
3604 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3605 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
3607 Value *Op0, *Op1, *Op2;
3608 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3609 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
3610 ParseTypeAndValue(Op1, PFS) ||
3611 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
3612 ParseTypeAndValue(Op2, PFS))
3615 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
3616 return Error(Loc, "invalid extractelement operands");
3618 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
3623 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
3624 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
3625 PATypeHolder Ty(Type::getVoidTy(Context));
3627 LocTy TypeLoc = Lex.getLoc();
3629 if (ParseType(Ty) ||
3630 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3631 ParseValue(Ty, Op0, PFS) ||
3632 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3633 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3634 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3637 bool AteExtraComma = false;
3638 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
3640 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
3642 if (!EatIfPresent(lltok::comma))
3645 if (Lex.getKind() == lltok::MetadataVar) {
3646 AteExtraComma = true;
3650 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3651 ParseValue(Ty, Op0, PFS) ||
3652 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3653 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3654 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3658 if (!Ty->isFirstClassType())
3659 return Error(TypeLoc, "phi node must have first class type");
3661 PHINode *PN = PHINode::Create(Ty);
3662 PN->reserveOperandSpace(PHIVals.size());
3663 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
3664 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
3666 return AteExtraComma ? InstExtraComma : InstNormal;
3670 /// ::= 'tail'? 'call' OptionalCallingConv OptionalAttrs Type Value
3671 /// ParameterList OptionalAttrs
3672 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
3674 unsigned RetAttrs, FnAttrs;
3676 PATypeHolder RetType(Type::getVoidTy(Context));
3679 SmallVector<ParamInfo, 16> ArgList;
3680 LocTy CallLoc = Lex.getLoc();
3682 if ((isTail && ParseToken(lltok::kw_call, "expected 'tail call'")) ||
3683 ParseOptionalCallingConv(CC) ||
3684 ParseOptionalAttrs(RetAttrs, 1) ||
3685 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3686 ParseValID(CalleeID) ||
3687 ParseParameterList(ArgList, PFS) ||
3688 ParseOptionalAttrs(FnAttrs, 2))
3691 // If RetType is a non-function pointer type, then this is the short syntax
3692 // for the call, which means that RetType is just the return type. Infer the
3693 // rest of the function argument types from the arguments that are present.
3694 const PointerType *PFTy = 0;
3695 const FunctionType *Ty = 0;
3696 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3697 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3698 // Pull out the types of all of the arguments...
3699 std::vector<const Type*> ParamTypes;
3700 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3701 ParamTypes.push_back(ArgList[i].V->getType());
3703 if (!FunctionType::isValidReturnType(RetType))
3704 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3706 Ty = FunctionType::get(RetType, ParamTypes, false);
3707 PFTy = PointerType::getUnqual(Ty);
3710 // Look up the callee.
3712 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3714 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
3715 // function attributes.
3716 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
3717 if (FnAttrs & ObsoleteFuncAttrs) {
3718 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
3719 FnAttrs &= ~ObsoleteFuncAttrs;
3722 // Set up the Attributes for the function.
3723 SmallVector<AttributeWithIndex, 8> Attrs;
3724 if (RetAttrs != Attribute::None)
3725 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3727 SmallVector<Value*, 8> Args;
3729 // Loop through FunctionType's arguments and ensure they are specified
3730 // correctly. Also, gather any parameter attributes.
3731 FunctionType::param_iterator I = Ty->param_begin();
3732 FunctionType::param_iterator E = Ty->param_end();
3733 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3734 const Type *ExpectedTy = 0;
3737 } else if (!Ty->isVarArg()) {
3738 return Error(ArgList[i].Loc, "too many arguments specified");
3741 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3742 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3743 ExpectedTy->getDescription() + "'");
3744 Args.push_back(ArgList[i].V);
3745 if (ArgList[i].Attrs != Attribute::None)
3746 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3750 return Error(CallLoc, "not enough parameters specified for call");
3752 if (FnAttrs != Attribute::None)
3753 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3755 // Finish off the Attributes and check them
3756 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3758 CallInst *CI = CallInst::Create(Callee, Args.begin(), Args.end());
3759 CI->setTailCall(isTail);
3760 CI->setCallingConv(CC);
3761 CI->setAttributes(PAL);
3766 //===----------------------------------------------------------------------===//
3767 // Memory Instructions.
3768 //===----------------------------------------------------------------------===//
3771 /// ::= 'malloc' Type (',' TypeAndValue)? (',' OptionalInfo)?
3772 /// ::= 'alloca' Type (',' TypeAndValue)? (',' OptionalInfo)?
3773 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS,
3774 BasicBlock* BB, bool isAlloca) {
3775 PATypeHolder Ty(Type::getVoidTy(Context));
3778 unsigned Alignment = 0;
3779 if (ParseType(Ty)) return true;
3781 bool AteExtraComma = false;
3782 if (EatIfPresent(lltok::comma)) {
3783 if (Lex.getKind() == lltok::kw_align) {
3784 if (ParseOptionalAlignment(Alignment)) return true;
3785 } else if (Lex.getKind() == lltok::MetadataVar) {
3786 AteExtraComma = true;
3788 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
3789 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3794 if (Size && !Size->getType()->isIntegerTy())
3795 return Error(SizeLoc, "element count must have integer type");
3798 Inst = new AllocaInst(Ty, Size, Alignment);
3799 return AteExtraComma ? InstExtraComma : InstNormal;
3802 // Autoupgrade old malloc instruction to malloc call.
3803 // FIXME: Remove in LLVM 3.0.
3804 if (Size && !Size->getType()->isIntegerTy(32))
3805 return Error(SizeLoc, "element count must be i32");
3806 const Type *IntPtrTy = Type::getInt32Ty(Context);
3807 Constant *AllocSize = ConstantExpr::getSizeOf(Ty);
3808 AllocSize = ConstantExpr::getTruncOrBitCast(AllocSize, IntPtrTy);
3810 // Prototype malloc as "void *(int32)".
3811 // This function is renamed as "malloc" in ValidateEndOfModule().
3812 MallocF = cast<Function>(
3813 M->getOrInsertFunction("", Type::getInt8PtrTy(Context), IntPtrTy, NULL));
3814 Inst = CallInst::CreateMalloc(BB, IntPtrTy, Ty, AllocSize, Size, MallocF);
3815 return AteExtraComma ? InstExtraComma : InstNormal;
3819 /// ::= 'free' TypeAndValue
3820 bool LLParser::ParseFree(Instruction *&Inst, PerFunctionState &PFS,
3822 Value *Val; LocTy Loc;
3823 if (ParseTypeAndValue(Val, Loc, PFS)) return true;
3824 if (!Val->getType()->isPointerTy())
3825 return Error(Loc, "operand to free must be a pointer");
3826 Inst = CallInst::CreateFree(Val, BB);
3831 /// ::= 'volatile'? 'load' TypeAndValue (',' OptionalInfo)?
3832 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS,
3834 Value *Val; LocTy Loc;
3835 unsigned Alignment = 0;
3836 bool AteExtraComma = false;
3837 if (ParseTypeAndValue(Val, Loc, PFS) ||
3838 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3841 if (!Val->getType()->isPointerTy() ||
3842 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
3843 return Error(Loc, "load operand must be a pointer to a first class type");
3845 Inst = new LoadInst(Val, "", isVolatile, Alignment);
3846 return AteExtraComma ? InstExtraComma : InstNormal;
3850 /// ::= 'volatile'? 'store' TypeAndValue ',' TypeAndValue (',' 'align' i32)?
3851 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS,
3853 Value *Val, *Ptr; LocTy Loc, PtrLoc;
3854 unsigned Alignment = 0;
3855 bool AteExtraComma = false;
3856 if (ParseTypeAndValue(Val, Loc, PFS) ||
3857 ParseToken(lltok::comma, "expected ',' after store operand") ||
3858 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
3859 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3862 if (!Ptr->getType()->isPointerTy())
3863 return Error(PtrLoc, "store operand must be a pointer");
3864 if (!Val->getType()->isFirstClassType())
3865 return Error(Loc, "store operand must be a first class value");
3866 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
3867 return Error(Loc, "stored value and pointer type do not match");
3869 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment);
3870 return AteExtraComma ? InstExtraComma : InstNormal;
3874 /// ::= 'getresult' TypeAndValue ',' i32
3875 /// FIXME: Remove support for getresult in LLVM 3.0
3876 bool LLParser::ParseGetResult(Instruction *&Inst, PerFunctionState &PFS) {
3877 Value *Val; LocTy ValLoc, EltLoc;
3879 if (ParseTypeAndValue(Val, ValLoc, PFS) ||
3880 ParseToken(lltok::comma, "expected ',' after getresult operand") ||
3881 ParseUInt32(Element, EltLoc))
3884 if (!Val->getType()->isStructTy() && !Val->getType()->isArrayTy())
3885 return Error(ValLoc, "getresult inst requires an aggregate operand");
3886 if (!ExtractValueInst::getIndexedType(Val->getType(), Element))
3887 return Error(EltLoc, "invalid getresult index for value");
3888 Inst = ExtractValueInst::Create(Val, Element);
3892 /// ParseGetElementPtr
3893 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
3894 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
3895 Value *Ptr, *Val; LocTy Loc, EltLoc;
3897 bool InBounds = EatIfPresent(lltok::kw_inbounds);
3899 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
3901 if (!Ptr->getType()->isPointerTy())
3902 return Error(Loc, "base of getelementptr must be a pointer");
3904 SmallVector<Value*, 16> Indices;
3905 bool AteExtraComma = false;
3906 while (EatIfPresent(lltok::comma)) {
3907 if (Lex.getKind() == lltok::MetadataVar) {
3908 AteExtraComma = true;
3911 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
3912 if (!Val->getType()->isIntegerTy())
3913 return Error(EltLoc, "getelementptr index must be an integer");
3914 Indices.push_back(Val);
3917 if (!GetElementPtrInst::getIndexedType(Ptr->getType(),
3918 Indices.begin(), Indices.end()))
3919 return Error(Loc, "invalid getelementptr indices");
3920 Inst = GetElementPtrInst::Create(Ptr, Indices.begin(), Indices.end());
3922 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
3923 return AteExtraComma ? InstExtraComma : InstNormal;
3926 /// ParseExtractValue
3927 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
3928 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
3929 Value *Val; LocTy Loc;
3930 SmallVector<unsigned, 4> Indices;
3932 if (ParseTypeAndValue(Val, Loc, PFS) ||
3933 ParseIndexList(Indices, AteExtraComma))
3936 if (!Val->getType()->isAggregateType())
3937 return Error(Loc, "extractvalue operand must be aggregate type");
3939 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
3941 return Error(Loc, "invalid indices for extractvalue");
3942 Inst = ExtractValueInst::Create(Val, Indices.begin(), Indices.end());
3943 return AteExtraComma ? InstExtraComma : InstNormal;
3946 /// ParseInsertValue
3947 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
3948 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
3949 Value *Val0, *Val1; LocTy Loc0, Loc1;
3950 SmallVector<unsigned, 4> Indices;
3952 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
3953 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
3954 ParseTypeAndValue(Val1, Loc1, PFS) ||
3955 ParseIndexList(Indices, AteExtraComma))
3958 if (!Val0->getType()->isAggregateType())
3959 return Error(Loc0, "insertvalue operand must be aggregate type");
3961 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
3963 return Error(Loc0, "invalid indices for insertvalue");
3964 Inst = InsertValueInst::Create(Val0, Val1, Indices.begin(), Indices.end());
3965 return AteExtraComma ? InstExtraComma : InstNormal;
3968 //===----------------------------------------------------------------------===//
3969 // Embedded metadata.
3970 //===----------------------------------------------------------------------===//
3972 /// ParseMDNodeVector
3973 /// ::= Element (',' Element)*
3975 /// ::= 'null' | TypeAndValue
3976 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts,
3977 PerFunctionState *PFS) {
3978 // Check for an empty list.
3979 if (Lex.getKind() == lltok::rbrace)
3983 // Null is a special case since it is typeless.
3984 if (EatIfPresent(lltok::kw_null)) {
3990 PATypeHolder Ty(Type::getVoidTy(Context));
3992 if (ParseType(Ty) || ParseValID(ID, PFS) ||
3993 ConvertValIDToValue(Ty, ID, V, PFS))
3997 } while (EatIfPresent(lltok::comma));