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 (Ty->isFunctionTy() || Ty->isLabelTy())
720 return Error(TyLoc, "invalid type for global variable");
722 GlobalVariable *GV = 0;
724 // See if the global was forward referenced, if so, use the global.
726 if (GlobalValue *GVal = M->getNamedValue(Name)) {
727 if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
728 return Error(NameLoc, "redefinition of global '@" + Name + "'");
729 GV = cast<GlobalVariable>(GVal);
732 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
733 I = ForwardRefValIDs.find(NumberedVals.size());
734 if (I != ForwardRefValIDs.end()) {
735 GV = cast<GlobalVariable>(I->second.first);
736 ForwardRefValIDs.erase(I);
741 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, 0,
742 Name, 0, false, AddrSpace);
744 if (GV->getType()->getElementType() != Ty)
746 "forward reference and definition of global have different types");
748 // Move the forward-reference to the correct spot in the module.
749 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
753 NumberedVals.push_back(GV);
755 // Set the parsed properties on the global.
757 GV->setInitializer(Init);
758 GV->setConstant(IsConstant);
759 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
760 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
761 GV->setThreadLocal(ThreadLocal);
762 GV->setUnnamedAddr(UnnamedAddr);
764 // Parse attributes on the global.
765 while (Lex.getKind() == lltok::comma) {
768 if (Lex.getKind() == lltok::kw_section) {
770 GV->setSection(Lex.getStrVal());
771 if (ParseToken(lltok::StringConstant, "expected global section string"))
773 } else if (Lex.getKind() == lltok::kw_align) {
775 if (ParseOptionalAlignment(Alignment)) return true;
776 GV->setAlignment(Alignment);
778 TokError("unknown global variable property!");
786 //===----------------------------------------------------------------------===//
787 // GlobalValue Reference/Resolution Routines.
788 //===----------------------------------------------------------------------===//
790 /// GetGlobalVal - Get a value with the specified name or ID, creating a
791 /// forward reference record if needed. This can return null if the value
792 /// exists but does not have the right type.
793 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, const Type *Ty,
795 const PointerType *PTy = dyn_cast<PointerType>(Ty);
797 Error(Loc, "global variable reference must have pointer type");
801 // Look this name up in the normal function symbol table.
803 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
805 // If this is a forward reference for the value, see if we already created a
806 // forward ref record.
808 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
809 I = ForwardRefVals.find(Name);
810 if (I != ForwardRefVals.end())
811 Val = I->second.first;
814 // If we have the value in the symbol table or fwd-ref table, return it.
816 if (Val->getType() == Ty) return Val;
817 Error(Loc, "'@" + Name + "' defined with type '" +
818 Val->getType()->getDescription() + "'");
822 // Otherwise, create a new forward reference for this value and remember it.
824 if (const FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType())) {
825 // Function types can return opaque but functions can't.
826 if (FT->getReturnType()->isOpaqueTy()) {
827 Error(Loc, "function may not return opaque type");
831 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
833 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
834 GlobalValue::ExternalWeakLinkage, 0, Name);
837 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
841 GlobalValue *LLParser::GetGlobalVal(unsigned ID, const Type *Ty, LocTy Loc) {
842 const PointerType *PTy = dyn_cast<PointerType>(Ty);
844 Error(Loc, "global variable reference must have pointer type");
848 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
850 // If this is a forward reference for the value, see if we already created a
851 // forward ref record.
853 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
854 I = ForwardRefValIDs.find(ID);
855 if (I != ForwardRefValIDs.end())
856 Val = I->second.first;
859 // If we have the value in the symbol table or fwd-ref table, return it.
861 if (Val->getType() == Ty) return Val;
862 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
863 Val->getType()->getDescription() + "'");
867 // Otherwise, create a new forward reference for this value and remember it.
869 if (const FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType())) {
870 // Function types can return opaque but functions can't.
871 if (FT->getReturnType()->isOpaqueTy()) {
872 Error(Loc, "function may not return opaque type");
875 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
877 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
878 GlobalValue::ExternalWeakLinkage, 0, "");
881 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
886 //===----------------------------------------------------------------------===//
888 //===----------------------------------------------------------------------===//
890 /// ParseToken - If the current token has the specified kind, eat it and return
891 /// success. Otherwise, emit the specified error and return failure.
892 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
893 if (Lex.getKind() != T)
894 return TokError(ErrMsg);
899 /// ParseStringConstant
900 /// ::= StringConstant
901 bool LLParser::ParseStringConstant(std::string &Result) {
902 if (Lex.getKind() != lltok::StringConstant)
903 return TokError("expected string constant");
904 Result = Lex.getStrVal();
911 bool LLParser::ParseUInt32(unsigned &Val) {
912 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
913 return TokError("expected integer");
914 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
915 if (Val64 != unsigned(Val64))
916 return TokError("expected 32-bit integer (too large)");
923 /// ParseOptionalAddrSpace
925 /// := 'addrspace' '(' uint32 ')'
926 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
928 if (!EatIfPresent(lltok::kw_addrspace))
930 return ParseToken(lltok::lparen, "expected '(' in address space") ||
931 ParseUInt32(AddrSpace) ||
932 ParseToken(lltok::rparen, "expected ')' in address space");
935 /// ParseOptionalAttrs - Parse a potentially empty attribute list. AttrKind
936 /// indicates what kind of attribute list this is: 0: function arg, 1: result,
937 /// 2: function attr.
938 /// 3: function arg after value: FIXME: REMOVE IN LLVM 3.0
939 bool LLParser::ParseOptionalAttrs(unsigned &Attrs, unsigned AttrKind) {
940 Attrs = Attribute::None;
941 LocTy AttrLoc = Lex.getLoc();
944 switch (Lex.getKind()) {
947 // Treat these as signext/zeroext if they occur in the argument list after
948 // the value, as in "call i8 @foo(i8 10 sext)". If they occur before the
949 // value, as in "call i8 @foo(i8 sext (" then it is part of a constant
951 // FIXME: REMOVE THIS IN LLVM 3.0
953 if (Lex.getKind() == lltok::kw_sext)
954 Attrs |= Attribute::SExt;
956 Attrs |= Attribute::ZExt;
960 default: // End of attributes.
961 if (AttrKind != 2 && (Attrs & Attribute::FunctionOnly))
962 return Error(AttrLoc, "invalid use of function-only attribute");
964 if (AttrKind != 0 && AttrKind != 3 && (Attrs & Attribute::ParameterOnly))
965 return Error(AttrLoc, "invalid use of parameter-only attribute");
968 case lltok::kw_zeroext: Attrs |= Attribute::ZExt; break;
969 case lltok::kw_signext: Attrs |= Attribute::SExt; break;
970 case lltok::kw_inreg: Attrs |= Attribute::InReg; break;
971 case lltok::kw_sret: Attrs |= Attribute::StructRet; break;
972 case lltok::kw_noalias: Attrs |= Attribute::NoAlias; break;
973 case lltok::kw_nocapture: Attrs |= Attribute::NoCapture; break;
974 case lltok::kw_byval: Attrs |= Attribute::ByVal; break;
975 case lltok::kw_nest: Attrs |= Attribute::Nest; break;
977 case lltok::kw_noreturn: Attrs |= Attribute::NoReturn; break;
978 case lltok::kw_nounwind: Attrs |= Attribute::NoUnwind; break;
979 case lltok::kw_noinline: Attrs |= Attribute::NoInline; break;
980 case lltok::kw_readnone: Attrs |= Attribute::ReadNone; break;
981 case lltok::kw_readonly: Attrs |= Attribute::ReadOnly; break;
982 case lltok::kw_inlinehint: Attrs |= Attribute::InlineHint; break;
983 case lltok::kw_alwaysinline: Attrs |= Attribute::AlwaysInline; break;
984 case lltok::kw_optsize: Attrs |= Attribute::OptimizeForSize; break;
985 case lltok::kw_ssp: Attrs |= Attribute::StackProtect; break;
986 case lltok::kw_sspreq: Attrs |= Attribute::StackProtectReq; break;
987 case lltok::kw_noredzone: Attrs |= Attribute::NoRedZone; break;
988 case lltok::kw_noimplicitfloat: Attrs |= Attribute::NoImplicitFloat; break;
989 case lltok::kw_naked: Attrs |= Attribute::Naked; break;
990 case lltok::kw_hotpatch: Attrs |= Attribute::Hotpatch; break;
992 case lltok::kw_alignstack: {
994 if (ParseOptionalStackAlignment(Alignment))
996 Attrs |= Attribute::constructStackAlignmentFromInt(Alignment);
1000 case lltok::kw_align: {
1002 if (ParseOptionalAlignment(Alignment))
1004 Attrs |= Attribute::constructAlignmentFromInt(Alignment);
1013 /// ParseOptionalLinkage
1016 /// ::= 'linker_private'
1017 /// ::= 'linker_private_weak'
1018 /// ::= 'linker_private_weak_def_auto'
1023 /// ::= 'linkonce_odr'
1024 /// ::= 'available_externally'
1029 /// ::= 'extern_weak'
1031 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1033 switch (Lex.getKind()) {
1034 default: Res=GlobalValue::ExternalLinkage; return false;
1035 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1036 case lltok::kw_linker_private: Res = GlobalValue::LinkerPrivateLinkage; break;
1037 case lltok::kw_linker_private_weak:
1038 Res = GlobalValue::LinkerPrivateWeakLinkage;
1040 case lltok::kw_linker_private_weak_def_auto:
1041 Res = GlobalValue::LinkerPrivateWeakDefAutoLinkage;
1043 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1044 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1045 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1046 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1047 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1048 case lltok::kw_available_externally:
1049 Res = GlobalValue::AvailableExternallyLinkage;
1051 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1052 case lltok::kw_dllexport: Res = GlobalValue::DLLExportLinkage; break;
1053 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1054 case lltok::kw_dllimport: Res = GlobalValue::DLLImportLinkage; break;
1055 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1056 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1063 /// ParseOptionalVisibility
1069 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1070 switch (Lex.getKind()) {
1071 default: Res = GlobalValue::DefaultVisibility; return false;
1072 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1073 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1074 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1080 /// ParseOptionalCallingConv
1085 /// ::= 'x86_stdcallcc'
1086 /// ::= 'x86_fastcallcc'
1087 /// ::= 'x86_thiscallcc'
1088 /// ::= 'arm_apcscc'
1089 /// ::= 'arm_aapcscc'
1090 /// ::= 'arm_aapcs_vfpcc'
1091 /// ::= 'msp430_intrcc'
1092 /// ::= 'ptx_kernel'
1093 /// ::= 'ptx_device'
1096 bool LLParser::ParseOptionalCallingConv(CallingConv::ID &CC) {
1097 switch (Lex.getKind()) {
1098 default: CC = CallingConv::C; return false;
1099 case lltok::kw_ccc: CC = CallingConv::C; break;
1100 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1101 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1102 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1103 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1104 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1105 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1106 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1107 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1108 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1109 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1110 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1111 case lltok::kw_cc: {
1112 unsigned ArbitraryCC;
1114 if (ParseUInt32(ArbitraryCC)) {
1117 CC = static_cast<CallingConv::ID>(ArbitraryCC);
1127 /// ParseInstructionMetadata
1128 /// ::= !dbg !42 (',' !dbg !57)*
1129 bool LLParser::ParseInstructionMetadata(Instruction *Inst,
1130 PerFunctionState *PFS) {
1132 if (Lex.getKind() != lltok::MetadataVar)
1133 return TokError("expected metadata after comma");
1135 std::string Name = Lex.getStrVal();
1136 unsigned MDK = M->getMDKindID(Name.c_str());
1140 SMLoc Loc = Lex.getLoc();
1142 if (ParseToken(lltok::exclaim, "expected '!' here"))
1145 // This code is similar to that of ParseMetadataValue, however it needs to
1146 // have special-case code for a forward reference; see the comments on
1147 // ForwardRefInstMetadata for details. Also, MDStrings are not supported
1148 // at the top level here.
1149 if (Lex.getKind() == lltok::lbrace) {
1151 if (ParseMetadataListValue(ID, PFS))
1153 assert(ID.Kind == ValID::t_MDNode);
1154 Inst->setMetadata(MDK, ID.MDNodeVal);
1156 unsigned NodeID = 0;
1157 if (ParseMDNodeID(Node, NodeID))
1160 // If we got the node, add it to the instruction.
1161 Inst->setMetadata(MDK, Node);
1163 MDRef R = { Loc, MDK, NodeID };
1164 // Otherwise, remember that this should be resolved later.
1165 ForwardRefInstMetadata[Inst].push_back(R);
1169 // If this is the end of the list, we're done.
1170 } while (EatIfPresent(lltok::comma));
1174 /// ParseOptionalAlignment
1177 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1179 if (!EatIfPresent(lltok::kw_align))
1181 LocTy AlignLoc = Lex.getLoc();
1182 if (ParseUInt32(Alignment)) return true;
1183 if (!isPowerOf2_32(Alignment))
1184 return Error(AlignLoc, "alignment is not a power of two");
1185 if (Alignment > Value::MaximumAlignment)
1186 return Error(AlignLoc, "huge alignments are not supported yet");
1190 /// ParseOptionalCommaAlign
1194 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1196 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1197 bool &AteExtraComma) {
1198 AteExtraComma = false;
1199 while (EatIfPresent(lltok::comma)) {
1200 // Metadata at the end is an early exit.
1201 if (Lex.getKind() == lltok::MetadataVar) {
1202 AteExtraComma = true;
1206 if (Lex.getKind() != lltok::kw_align)
1207 return Error(Lex.getLoc(), "expected metadata or 'align'");
1209 if (ParseOptionalAlignment(Alignment)) return true;
1215 /// ParseOptionalStackAlignment
1217 /// ::= 'alignstack' '(' 4 ')'
1218 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1220 if (!EatIfPresent(lltok::kw_alignstack))
1222 LocTy ParenLoc = Lex.getLoc();
1223 if (!EatIfPresent(lltok::lparen))
1224 return Error(ParenLoc, "expected '('");
1225 LocTy AlignLoc = Lex.getLoc();
1226 if (ParseUInt32(Alignment)) return true;
1227 ParenLoc = Lex.getLoc();
1228 if (!EatIfPresent(lltok::rparen))
1229 return Error(ParenLoc, "expected ')'");
1230 if (!isPowerOf2_32(Alignment))
1231 return Error(AlignLoc, "stack alignment is not a power of two");
1235 /// ParseIndexList - This parses the index list for an insert/extractvalue
1236 /// instruction. This sets AteExtraComma in the case where we eat an extra
1237 /// comma at the end of the line and find that it is followed by metadata.
1238 /// Clients that don't allow metadata can call the version of this function that
1239 /// only takes one argument.
1242 /// ::= (',' uint32)+
1244 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1245 bool &AteExtraComma) {
1246 AteExtraComma = false;
1248 if (Lex.getKind() != lltok::comma)
1249 return TokError("expected ',' as start of index list");
1251 while (EatIfPresent(lltok::comma)) {
1252 if (Lex.getKind() == lltok::MetadataVar) {
1253 AteExtraComma = true;
1257 if (ParseUInt32(Idx)) return true;
1258 Indices.push_back(Idx);
1264 //===----------------------------------------------------------------------===//
1266 //===----------------------------------------------------------------------===//
1268 /// ParseType - Parse and resolve a full type.
1269 bool LLParser::ParseType(PATypeHolder &Result, bool AllowVoid) {
1270 LocTy TypeLoc = Lex.getLoc();
1271 if (ParseTypeRec(Result)) return true;
1273 // Verify no unresolved uprefs.
1274 if (!UpRefs.empty())
1275 return Error(UpRefs.back().Loc, "invalid unresolved type up reference");
1277 if (!AllowVoid && Result.get()->isVoidTy())
1278 return Error(TypeLoc, "void type only allowed for function results");
1283 /// HandleUpRefs - Every time we finish a new layer of types, this function is
1284 /// called. It loops through the UpRefs vector, which is a list of the
1285 /// currently active types. For each type, if the up-reference is contained in
1286 /// the newly completed type, we decrement the level count. When the level
1287 /// count reaches zero, the up-referenced type is the type that is passed in:
1288 /// thus we can complete the cycle.
1290 PATypeHolder LLParser::HandleUpRefs(const Type *ty) {
1291 // If Ty isn't abstract, or if there are no up-references in it, then there is
1292 // nothing to resolve here.
1293 if (!ty->isAbstract() || UpRefs.empty()) return ty;
1295 PATypeHolder Ty(ty);
1297 dbgs() << "Type '" << Ty->getDescription()
1298 << "' newly formed. Resolving upreferences.\n"
1299 << UpRefs.size() << " upreferences active!\n";
1302 // If we find any resolvable upreferences (i.e., those whose NestingLevel goes
1303 // to zero), we resolve them all together before we resolve them to Ty. At
1304 // the end of the loop, if there is anything to resolve to Ty, it will be in
1306 OpaqueType *TypeToResolve = 0;
1308 for (unsigned i = 0; i != UpRefs.size(); ++i) {
1309 // Determine if 'Ty' directly contains this up-references 'LastContainedTy'.
1311 std::find(Ty->subtype_begin(), Ty->subtype_end(),
1312 UpRefs[i].LastContainedTy) != Ty->subtype_end();
1315 dbgs() << " UR#" << i << " - TypeContains(" << Ty->getDescription() << ", "
1316 << UpRefs[i].LastContainedTy->getDescription() << ") = "
1317 << (ContainsType ? "true" : "false")
1318 << " level=" << UpRefs[i].NestingLevel << "\n";
1323 // Decrement level of upreference
1324 unsigned Level = --UpRefs[i].NestingLevel;
1325 UpRefs[i].LastContainedTy = Ty;
1327 // If the Up-reference has a non-zero level, it shouldn't be resolved yet.
1332 dbgs() << " * Resolving upreference for " << UpRefs[i].UpRefTy << "\n";
1335 TypeToResolve = UpRefs[i].UpRefTy;
1337 UpRefs[i].UpRefTy->refineAbstractTypeTo(TypeToResolve);
1338 UpRefs.erase(UpRefs.begin()+i); // Remove from upreference list.
1339 --i; // Do not skip the next element.
1343 TypeToResolve->refineAbstractTypeTo(Ty);
1349 /// ParseTypeRec - The recursive function used to process the internal
1350 /// implementation details of types.
1351 bool LLParser::ParseTypeRec(PATypeHolder &Result) {
1352 switch (Lex.getKind()) {
1354 return TokError("expected type");
1356 // TypeRec ::= 'float' | 'void' (etc)
1357 Result = Lex.getTyVal();
1360 case lltok::kw_opaque:
1361 // TypeRec ::= 'opaque'
1362 Result = OpaqueType::get(Context);
1366 // TypeRec ::= '{' ... '}'
1367 if (ParseStructType(Result, false))
1370 case lltok::lsquare:
1371 // TypeRec ::= '[' ... ']'
1372 Lex.Lex(); // eat the lsquare.
1373 if (ParseArrayVectorType(Result, false))
1376 case lltok::less: // Either vector or packed struct.
1377 // TypeRec ::= '<' ... '>'
1379 if (Lex.getKind() == lltok::lbrace) {
1380 if (ParseStructType(Result, true) ||
1381 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1383 } else if (ParseArrayVectorType(Result, true))
1386 case lltok::LocalVar:
1387 case lltok::StringConstant: // FIXME: REMOVE IN LLVM 3.0
1389 if (const Type *T = M->getTypeByName(Lex.getStrVal())) {
1392 Result = OpaqueType::get(Context);
1393 ForwardRefTypes.insert(std::make_pair(Lex.getStrVal(),
1394 std::make_pair(Result,
1396 M->addTypeName(Lex.getStrVal(), Result.get());
1401 case lltok::LocalVarID:
1403 if (Lex.getUIntVal() < NumberedTypes.size())
1404 Result = NumberedTypes[Lex.getUIntVal()];
1406 std::map<unsigned, std::pair<PATypeHolder, LocTy> >::iterator
1407 I = ForwardRefTypeIDs.find(Lex.getUIntVal());
1408 if (I != ForwardRefTypeIDs.end())
1409 Result = I->second.first;
1411 Result = OpaqueType::get(Context);
1412 ForwardRefTypeIDs.insert(std::make_pair(Lex.getUIntVal(),
1413 std::make_pair(Result,
1419 case lltok::backslash: {
1420 // TypeRec ::= '\' 4
1423 if (ParseUInt32(Val)) return true;
1424 OpaqueType *OT = OpaqueType::get(Context); //Use temporary placeholder.
1425 UpRefs.push_back(UpRefRecord(Lex.getLoc(), Val, OT));
1431 // Parse the type suffixes.
1433 switch (Lex.getKind()) {
1435 default: return false;
1437 // TypeRec ::= TypeRec '*'
1439 if (Result.get()->isLabelTy())
1440 return TokError("basic block pointers are invalid");
1441 if (Result.get()->isVoidTy())
1442 return TokError("pointers to void are invalid; use i8* instead");
1443 if (!PointerType::isValidElementType(Result.get()))
1444 return TokError("pointer to this type is invalid");
1445 Result = HandleUpRefs(PointerType::getUnqual(Result.get()));
1449 // TypeRec ::= TypeRec 'addrspace' '(' uint32 ')' '*'
1450 case lltok::kw_addrspace: {
1451 if (Result.get()->isLabelTy())
1452 return TokError("basic block pointers are invalid");
1453 if (Result.get()->isVoidTy())
1454 return TokError("pointers to void are invalid; use i8* instead");
1455 if (!PointerType::isValidElementType(Result.get()))
1456 return TokError("pointer to this type is invalid");
1458 if (ParseOptionalAddrSpace(AddrSpace) ||
1459 ParseToken(lltok::star, "expected '*' in address space"))
1462 Result = HandleUpRefs(PointerType::get(Result.get(), AddrSpace));
1466 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1468 if (ParseFunctionType(Result))
1475 /// ParseParameterList
1477 /// ::= '(' Arg (',' Arg)* ')'
1479 /// ::= Type OptionalAttributes Value OptionalAttributes
1480 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1481 PerFunctionState &PFS) {
1482 if (ParseToken(lltok::lparen, "expected '(' in call"))
1485 while (Lex.getKind() != lltok::rparen) {
1486 // If this isn't the first argument, we need a comma.
1487 if (!ArgList.empty() &&
1488 ParseToken(lltok::comma, "expected ',' in argument list"))
1491 // Parse the argument.
1493 PATypeHolder ArgTy(Type::getVoidTy(Context));
1494 unsigned ArgAttrs1 = Attribute::None;
1495 unsigned ArgAttrs2 = Attribute::None;
1497 if (ParseType(ArgTy, ArgLoc))
1500 // Otherwise, handle normal operands.
1501 if (ParseOptionalAttrs(ArgAttrs1, 0) ||
1502 ParseValue(ArgTy, V, PFS) ||
1503 // FIXME: Should not allow attributes after the argument, remove this
1505 ParseOptionalAttrs(ArgAttrs2, 3))
1507 ArgList.push_back(ParamInfo(ArgLoc, V, ArgAttrs1|ArgAttrs2));
1510 Lex.Lex(); // Lex the ')'.
1516 /// ParseArgumentList - Parse the argument list for a function type or function
1517 /// prototype. If 'inType' is true then we are parsing a FunctionType.
1518 /// ::= '(' ArgTypeListI ')'
1522 /// ::= ArgTypeList ',' '...'
1523 /// ::= ArgType (',' ArgType)*
1525 bool LLParser::ParseArgumentList(std::vector<ArgInfo> &ArgList,
1526 bool &isVarArg, bool inType) {
1528 assert(Lex.getKind() == lltok::lparen);
1529 Lex.Lex(); // eat the (.
1531 if (Lex.getKind() == lltok::rparen) {
1533 } else if (Lex.getKind() == lltok::dotdotdot) {
1537 LocTy TypeLoc = Lex.getLoc();
1538 PATypeHolder ArgTy(Type::getVoidTy(Context));
1542 // If we're parsing a type, use ParseTypeRec, because we allow recursive
1543 // types (such as a function returning a pointer to itself). If parsing a
1544 // function prototype, we require fully resolved types.
1545 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1546 ParseOptionalAttrs(Attrs, 0)) return true;
1548 if (ArgTy->isVoidTy())
1549 return Error(TypeLoc, "argument can not have void type");
1551 if (Lex.getKind() == lltok::LocalVar ||
1552 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1553 Name = Lex.getStrVal();
1557 if (!FunctionType::isValidArgumentType(ArgTy))
1558 return Error(TypeLoc, "invalid type for function argument");
1560 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1562 while (EatIfPresent(lltok::comma)) {
1563 // Handle ... at end of arg list.
1564 if (EatIfPresent(lltok::dotdotdot)) {
1569 // Otherwise must be an argument type.
1570 TypeLoc = Lex.getLoc();
1571 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1572 ParseOptionalAttrs(Attrs, 0)) return true;
1574 if (ArgTy->isVoidTy())
1575 return Error(TypeLoc, "argument can not have void type");
1577 if (Lex.getKind() == lltok::LocalVar ||
1578 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1579 Name = Lex.getStrVal();
1585 if (!ArgTy->isFirstClassType() && !ArgTy->isOpaqueTy())
1586 return Error(TypeLoc, "invalid type for function argument");
1588 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1592 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1595 /// ParseFunctionType
1596 /// ::= Type ArgumentList OptionalAttrs
1597 bool LLParser::ParseFunctionType(PATypeHolder &Result) {
1598 assert(Lex.getKind() == lltok::lparen);
1600 if (!FunctionType::isValidReturnType(Result))
1601 return TokError("invalid function return type");
1603 std::vector<ArgInfo> ArgList;
1606 if (ParseArgumentList(ArgList, isVarArg, true) ||
1607 // FIXME: Allow, but ignore attributes on function types!
1608 // FIXME: Remove in LLVM 3.0
1609 ParseOptionalAttrs(Attrs, 2))
1612 // Reject names on the arguments lists.
1613 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1614 if (!ArgList[i].Name.empty())
1615 return Error(ArgList[i].Loc, "argument name invalid in function type");
1616 if (!ArgList[i].Attrs != 0) {
1617 // Allow but ignore attributes on function types; this permits
1619 // FIXME: REJECT ATTRIBUTES ON FUNCTION TYPES in LLVM 3.0
1623 std::vector<const Type*> ArgListTy;
1624 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1625 ArgListTy.push_back(ArgList[i].Type);
1627 Result = HandleUpRefs(FunctionType::get(Result.get(),
1628 ArgListTy, isVarArg));
1632 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
1635 /// ::= '{' TypeRec (',' TypeRec)* '}'
1636 /// ::= '<' '{' '}' '>'
1637 /// ::= '<' '{' TypeRec (',' TypeRec)* '}' '>'
1638 bool LLParser::ParseStructType(PATypeHolder &Result, bool Packed) {
1639 assert(Lex.getKind() == lltok::lbrace);
1640 Lex.Lex(); // Consume the '{'
1642 if (EatIfPresent(lltok::rbrace)) {
1643 Result = StructType::get(Context, Packed);
1647 std::vector<PATypeHolder> ParamsList;
1648 LocTy EltTyLoc = Lex.getLoc();
1649 if (ParseTypeRec(Result)) return true;
1650 ParamsList.push_back(Result);
1652 if (Result->isVoidTy())
1653 return Error(EltTyLoc, "struct element can not have void type");
1654 if (!StructType::isValidElementType(Result))
1655 return Error(EltTyLoc, "invalid element type for struct");
1657 while (EatIfPresent(lltok::comma)) {
1658 EltTyLoc = Lex.getLoc();
1659 if (ParseTypeRec(Result)) return true;
1661 if (Result->isVoidTy())
1662 return Error(EltTyLoc, "struct element can not have void type");
1663 if (!StructType::isValidElementType(Result))
1664 return Error(EltTyLoc, "invalid element type for struct");
1666 ParamsList.push_back(Result);
1669 if (ParseToken(lltok::rbrace, "expected '}' at end of struct"))
1672 std::vector<const Type*> ParamsListTy;
1673 for (unsigned i = 0, e = ParamsList.size(); i != e; ++i)
1674 ParamsListTy.push_back(ParamsList[i].get());
1675 Result = HandleUpRefs(StructType::get(Context, ParamsListTy, Packed));
1679 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
1680 /// token has already been consumed.
1682 /// ::= '[' APSINTVAL 'x' Types ']'
1683 /// ::= '<' APSINTVAL 'x' Types '>'
1684 bool LLParser::ParseArrayVectorType(PATypeHolder &Result, bool isVector) {
1685 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
1686 Lex.getAPSIntVal().getBitWidth() > 64)
1687 return TokError("expected number in address space");
1689 LocTy SizeLoc = Lex.getLoc();
1690 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
1693 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
1696 LocTy TypeLoc = Lex.getLoc();
1697 PATypeHolder EltTy(Type::getVoidTy(Context));
1698 if (ParseTypeRec(EltTy)) return true;
1700 if (EltTy->isVoidTy())
1701 return Error(TypeLoc, "array and vector element type cannot be void");
1703 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
1704 "expected end of sequential type"))
1709 return Error(SizeLoc, "zero element vector is illegal");
1710 if ((unsigned)Size != Size)
1711 return Error(SizeLoc, "size too large for vector");
1712 if (!VectorType::isValidElementType(EltTy))
1713 return Error(TypeLoc, "vector element type must be fp or integer");
1714 Result = VectorType::get(EltTy, unsigned(Size));
1716 if (!ArrayType::isValidElementType(EltTy))
1717 return Error(TypeLoc, "invalid array element type");
1718 Result = HandleUpRefs(ArrayType::get(EltTy, Size));
1723 //===----------------------------------------------------------------------===//
1724 // Function Semantic Analysis.
1725 //===----------------------------------------------------------------------===//
1727 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
1729 : P(p), F(f), FunctionNumber(functionNumber) {
1731 // Insert unnamed arguments into the NumberedVals list.
1732 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
1735 NumberedVals.push_back(AI);
1738 LLParser::PerFunctionState::~PerFunctionState() {
1739 // If there were any forward referenced non-basicblock values, delete them.
1740 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
1741 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
1742 if (!isa<BasicBlock>(I->second.first)) {
1743 I->second.first->replaceAllUsesWith(
1744 UndefValue::get(I->second.first->getType()));
1745 delete I->second.first;
1746 I->second.first = 0;
1749 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1750 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
1751 if (!isa<BasicBlock>(I->second.first)) {
1752 I->second.first->replaceAllUsesWith(
1753 UndefValue::get(I->second.first->getType()));
1754 delete I->second.first;
1755 I->second.first = 0;
1759 bool LLParser::PerFunctionState::FinishFunction() {
1760 // Check to see if someone took the address of labels in this block.
1761 if (!P.ForwardRefBlockAddresses.empty()) {
1763 if (!F.getName().empty()) {
1764 FunctionID.Kind = ValID::t_GlobalName;
1765 FunctionID.StrVal = F.getName();
1767 FunctionID.Kind = ValID::t_GlobalID;
1768 FunctionID.UIntVal = FunctionNumber;
1771 std::map<ValID, std::vector<std::pair<ValID, GlobalValue*> > >::iterator
1772 FRBAI = P.ForwardRefBlockAddresses.find(FunctionID);
1773 if (FRBAI != P.ForwardRefBlockAddresses.end()) {
1774 // Resolve all these references.
1775 if (P.ResolveForwardRefBlockAddresses(&F, FRBAI->second, this))
1778 P.ForwardRefBlockAddresses.erase(FRBAI);
1782 if (!ForwardRefVals.empty())
1783 return P.Error(ForwardRefVals.begin()->second.second,
1784 "use of undefined value '%" + ForwardRefVals.begin()->first +
1786 if (!ForwardRefValIDs.empty())
1787 return P.Error(ForwardRefValIDs.begin()->second.second,
1788 "use of undefined value '%" +
1789 Twine(ForwardRefValIDs.begin()->first) + "'");
1794 /// GetVal - Get a value with the specified name or ID, creating a
1795 /// forward reference record if needed. This can return null if the value
1796 /// exists but does not have the right type.
1797 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
1798 const Type *Ty, LocTy Loc) {
1799 // Look this name up in the normal function symbol table.
1800 Value *Val = F.getValueSymbolTable().lookup(Name);
1802 // If this is a forward reference for the value, see if we already created a
1803 // forward ref record.
1805 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1806 I = ForwardRefVals.find(Name);
1807 if (I != ForwardRefVals.end())
1808 Val = I->second.first;
1811 // If we have the value in the symbol table or fwd-ref table, return it.
1813 if (Val->getType() == Ty) return Val;
1814 if (Ty->isLabelTy())
1815 P.Error(Loc, "'%" + Name + "' is not a basic block");
1817 P.Error(Loc, "'%" + Name + "' defined with type '" +
1818 Val->getType()->getDescription() + "'");
1822 // Don't make placeholders with invalid type.
1823 if (!Ty->isFirstClassType() && !Ty->isOpaqueTy() && !Ty->isLabelTy()) {
1824 P.Error(Loc, "invalid use of a non-first-class type");
1828 // Otherwise, create a new forward reference for this value and remember it.
1830 if (Ty->isLabelTy())
1831 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
1833 FwdVal = new Argument(Ty, Name);
1835 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1839 Value *LLParser::PerFunctionState::GetVal(unsigned ID, const Type *Ty,
1841 // Look this name up in the normal function symbol table.
1842 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
1844 // If this is a forward reference for the value, see if we already created a
1845 // forward ref record.
1847 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1848 I = ForwardRefValIDs.find(ID);
1849 if (I != ForwardRefValIDs.end())
1850 Val = I->second.first;
1853 // If we have the value in the symbol table or fwd-ref table, return it.
1855 if (Val->getType() == Ty) return Val;
1856 if (Ty->isLabelTy())
1857 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
1859 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
1860 Val->getType()->getDescription() + "'");
1864 if (!Ty->isFirstClassType() && !Ty->isOpaqueTy() && !Ty->isLabelTy()) {
1865 P.Error(Loc, "invalid use of a non-first-class type");
1869 // Otherwise, create a new forward reference for this value and remember it.
1871 if (Ty->isLabelTy())
1872 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
1874 FwdVal = new Argument(Ty);
1876 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1880 /// SetInstName - After an instruction is parsed and inserted into its
1881 /// basic block, this installs its name.
1882 bool LLParser::PerFunctionState::SetInstName(int NameID,
1883 const std::string &NameStr,
1884 LocTy NameLoc, Instruction *Inst) {
1885 // If this instruction has void type, it cannot have a name or ID specified.
1886 if (Inst->getType()->isVoidTy()) {
1887 if (NameID != -1 || !NameStr.empty())
1888 return P.Error(NameLoc, "instructions returning void cannot have a name");
1892 // If this was a numbered instruction, verify that the instruction is the
1893 // expected value and resolve any forward references.
1894 if (NameStr.empty()) {
1895 // If neither a name nor an ID was specified, just use the next ID.
1897 NameID = NumberedVals.size();
1899 if (unsigned(NameID) != NumberedVals.size())
1900 return P.Error(NameLoc, "instruction expected to be numbered '%" +
1901 Twine(NumberedVals.size()) + "'");
1903 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
1904 ForwardRefValIDs.find(NameID);
1905 if (FI != ForwardRefValIDs.end()) {
1906 if (FI->second.first->getType() != Inst->getType())
1907 return P.Error(NameLoc, "instruction forward referenced with type '" +
1908 FI->second.first->getType()->getDescription() + "'");
1909 FI->second.first->replaceAllUsesWith(Inst);
1910 delete FI->second.first;
1911 ForwardRefValIDs.erase(FI);
1914 NumberedVals.push_back(Inst);
1918 // Otherwise, the instruction had a name. Resolve forward refs and set it.
1919 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1920 FI = ForwardRefVals.find(NameStr);
1921 if (FI != ForwardRefVals.end()) {
1922 if (FI->second.first->getType() != Inst->getType())
1923 return P.Error(NameLoc, "instruction forward referenced with type '" +
1924 FI->second.first->getType()->getDescription() + "'");
1925 FI->second.first->replaceAllUsesWith(Inst);
1926 delete FI->second.first;
1927 ForwardRefVals.erase(FI);
1930 // Set the name on the instruction.
1931 Inst->setName(NameStr);
1933 if (Inst->getName() != NameStr)
1934 return P.Error(NameLoc, "multiple definition of local value named '" +
1939 /// GetBB - Get a basic block with the specified name or ID, creating a
1940 /// forward reference record if needed.
1941 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
1943 return cast_or_null<BasicBlock>(GetVal(Name,
1944 Type::getLabelTy(F.getContext()), Loc));
1947 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
1948 return cast_or_null<BasicBlock>(GetVal(ID,
1949 Type::getLabelTy(F.getContext()), Loc));
1952 /// DefineBB - Define the specified basic block, which is either named or
1953 /// unnamed. If there is an error, this returns null otherwise it returns
1954 /// the block being defined.
1955 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
1959 BB = GetBB(NumberedVals.size(), Loc);
1961 BB = GetBB(Name, Loc);
1962 if (BB == 0) return 0; // Already diagnosed error.
1964 // Move the block to the end of the function. Forward ref'd blocks are
1965 // inserted wherever they happen to be referenced.
1966 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
1968 // Remove the block from forward ref sets.
1970 ForwardRefValIDs.erase(NumberedVals.size());
1971 NumberedVals.push_back(BB);
1973 // BB forward references are already in the function symbol table.
1974 ForwardRefVals.erase(Name);
1980 //===----------------------------------------------------------------------===//
1982 //===----------------------------------------------------------------------===//
1984 /// ParseValID - Parse an abstract value that doesn't necessarily have a
1985 /// type implied. For example, if we parse "4" we don't know what integer type
1986 /// it has. The value will later be combined with its type and checked for
1987 /// sanity. PFS is used to convert function-local operands of metadata (since
1988 /// metadata operands are not just parsed here but also converted to values).
1989 /// PFS can be null when we are not parsing metadata values inside a function.
1990 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
1991 ID.Loc = Lex.getLoc();
1992 switch (Lex.getKind()) {
1993 default: return TokError("expected value token");
1994 case lltok::GlobalID: // @42
1995 ID.UIntVal = Lex.getUIntVal();
1996 ID.Kind = ValID::t_GlobalID;
1998 case lltok::GlobalVar: // @foo
1999 ID.StrVal = Lex.getStrVal();
2000 ID.Kind = ValID::t_GlobalName;
2002 case lltok::LocalVarID: // %42
2003 ID.UIntVal = Lex.getUIntVal();
2004 ID.Kind = ValID::t_LocalID;
2006 case lltok::LocalVar: // %foo
2007 case lltok::StringConstant: // "foo" - FIXME: REMOVE IN LLVM 3.0
2008 ID.StrVal = Lex.getStrVal();
2009 ID.Kind = ValID::t_LocalName;
2011 case lltok::exclaim: // !42, !{...}, or !"foo"
2012 return ParseMetadataValue(ID, PFS);
2014 ID.APSIntVal = Lex.getAPSIntVal();
2015 ID.Kind = ValID::t_APSInt;
2017 case lltok::APFloat:
2018 ID.APFloatVal = Lex.getAPFloatVal();
2019 ID.Kind = ValID::t_APFloat;
2021 case lltok::kw_true:
2022 ID.ConstantVal = ConstantInt::getTrue(Context);
2023 ID.Kind = ValID::t_Constant;
2025 case lltok::kw_false:
2026 ID.ConstantVal = ConstantInt::getFalse(Context);
2027 ID.Kind = ValID::t_Constant;
2029 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2030 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2031 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2033 case lltok::lbrace: {
2034 // ValID ::= '{' ConstVector '}'
2036 SmallVector<Constant*, 16> Elts;
2037 if (ParseGlobalValueVector(Elts) ||
2038 ParseToken(lltok::rbrace, "expected end of struct constant"))
2041 ID.ConstantVal = ConstantStruct::get(Context, Elts.data(),
2042 Elts.size(), false);
2043 ID.Kind = ValID::t_Constant;
2047 // ValID ::= '<' ConstVector '>' --> Vector.
2048 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2050 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2052 SmallVector<Constant*, 16> Elts;
2053 LocTy FirstEltLoc = Lex.getLoc();
2054 if (ParseGlobalValueVector(Elts) ||
2056 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2057 ParseToken(lltok::greater, "expected end of constant"))
2060 if (isPackedStruct) {
2062 ConstantStruct::get(Context, Elts.data(), Elts.size(), true);
2063 ID.Kind = ValID::t_Constant;
2068 return Error(ID.Loc, "constant vector must not be empty");
2070 if (!Elts[0]->getType()->isIntegerTy() &&
2071 !Elts[0]->getType()->isFloatingPointTy())
2072 return Error(FirstEltLoc,
2073 "vector elements must have integer or floating point type");
2075 // Verify that all the vector elements have the same type.
2076 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2077 if (Elts[i]->getType() != Elts[0]->getType())
2078 return Error(FirstEltLoc,
2079 "vector element #" + Twine(i) +
2080 " is not of type '" + Elts[0]->getType()->getDescription());
2082 ID.ConstantVal = ConstantVector::get(Elts);
2083 ID.Kind = ValID::t_Constant;
2086 case lltok::lsquare: { // Array Constant
2088 SmallVector<Constant*, 16> Elts;
2089 LocTy FirstEltLoc = Lex.getLoc();
2090 if (ParseGlobalValueVector(Elts) ||
2091 ParseToken(lltok::rsquare, "expected end of array constant"))
2094 // Handle empty element.
2096 // Use undef instead of an array because it's inconvenient to determine
2097 // the element type at this point, there being no elements to examine.
2098 ID.Kind = ValID::t_EmptyArray;
2102 if (!Elts[0]->getType()->isFirstClassType())
2103 return Error(FirstEltLoc, "invalid array element type: " +
2104 Elts[0]->getType()->getDescription());
2106 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2108 // Verify all elements are correct type!
2109 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2110 if (Elts[i]->getType() != Elts[0]->getType())
2111 return Error(FirstEltLoc,
2112 "array element #" + Twine(i) +
2113 " is not of type '" +Elts[0]->getType()->getDescription());
2116 ID.ConstantVal = ConstantArray::get(ATy, Elts.data(), Elts.size());
2117 ID.Kind = ValID::t_Constant;
2120 case lltok::kw_c: // c "foo"
2122 ID.ConstantVal = ConstantArray::get(Context, Lex.getStrVal(), false);
2123 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2124 ID.Kind = ValID::t_Constant;
2127 case lltok::kw_asm: {
2128 // ValID ::= 'asm' SideEffect? AlignStack? STRINGCONSTANT ',' STRINGCONSTANT
2129 bool HasSideEffect, AlignStack;
2131 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2132 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2133 ParseStringConstant(ID.StrVal) ||
2134 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2135 ParseToken(lltok::StringConstant, "expected constraint string"))
2137 ID.StrVal2 = Lex.getStrVal();
2138 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1);
2139 ID.Kind = ValID::t_InlineAsm;
2143 case lltok::kw_blockaddress: {
2144 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2148 LocTy FnLoc, LabelLoc;
2150 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2152 ParseToken(lltok::comma, "expected comma in block address expression")||
2153 ParseValID(Label) ||
2154 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2157 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2158 return Error(Fn.Loc, "expected function name in blockaddress");
2159 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2160 return Error(Label.Loc, "expected basic block name in blockaddress");
2162 // Make a global variable as a placeholder for this reference.
2163 GlobalVariable *FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context),
2164 false, GlobalValue::InternalLinkage,
2166 ForwardRefBlockAddresses[Fn].push_back(std::make_pair(Label, FwdRef));
2167 ID.ConstantVal = FwdRef;
2168 ID.Kind = ValID::t_Constant;
2172 case lltok::kw_trunc:
2173 case lltok::kw_zext:
2174 case lltok::kw_sext:
2175 case lltok::kw_fptrunc:
2176 case lltok::kw_fpext:
2177 case lltok::kw_bitcast:
2178 case lltok::kw_uitofp:
2179 case lltok::kw_sitofp:
2180 case lltok::kw_fptoui:
2181 case lltok::kw_fptosi:
2182 case lltok::kw_inttoptr:
2183 case lltok::kw_ptrtoint: {
2184 unsigned Opc = Lex.getUIntVal();
2185 PATypeHolder DestTy(Type::getVoidTy(Context));
2188 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2189 ParseGlobalTypeAndValue(SrcVal) ||
2190 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2191 ParseType(DestTy) ||
2192 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2194 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2195 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2196 SrcVal->getType()->getDescription() + "' to '" +
2197 DestTy->getDescription() + "'");
2198 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2200 ID.Kind = ValID::t_Constant;
2203 case lltok::kw_extractvalue: {
2206 SmallVector<unsigned, 4> Indices;
2207 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2208 ParseGlobalTypeAndValue(Val) ||
2209 ParseIndexList(Indices) ||
2210 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2213 if (!Val->getType()->isAggregateType())
2214 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2215 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
2217 return Error(ID.Loc, "invalid indices for extractvalue");
2219 ConstantExpr::getExtractValue(Val, Indices.data(), Indices.size());
2220 ID.Kind = ValID::t_Constant;
2223 case lltok::kw_insertvalue: {
2225 Constant *Val0, *Val1;
2226 SmallVector<unsigned, 4> Indices;
2227 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2228 ParseGlobalTypeAndValue(Val0) ||
2229 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2230 ParseGlobalTypeAndValue(Val1) ||
2231 ParseIndexList(Indices) ||
2232 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2234 if (!Val0->getType()->isAggregateType())
2235 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2236 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
2238 return Error(ID.Loc, "invalid indices for insertvalue");
2239 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1,
2240 Indices.data(), Indices.size());
2241 ID.Kind = ValID::t_Constant;
2244 case lltok::kw_icmp:
2245 case lltok::kw_fcmp: {
2246 unsigned PredVal, Opc = Lex.getUIntVal();
2247 Constant *Val0, *Val1;
2249 if (ParseCmpPredicate(PredVal, Opc) ||
2250 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2251 ParseGlobalTypeAndValue(Val0) ||
2252 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2253 ParseGlobalTypeAndValue(Val1) ||
2254 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2257 if (Val0->getType() != Val1->getType())
2258 return Error(ID.Loc, "compare operands must have the same type");
2260 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2262 if (Opc == Instruction::FCmp) {
2263 if (!Val0->getType()->isFPOrFPVectorTy())
2264 return Error(ID.Loc, "fcmp requires floating point operands");
2265 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2267 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2268 if (!Val0->getType()->isIntOrIntVectorTy() &&
2269 !Val0->getType()->isPointerTy())
2270 return Error(ID.Loc, "icmp requires pointer or integer operands");
2271 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2273 ID.Kind = ValID::t_Constant;
2277 // Binary Operators.
2279 case lltok::kw_fadd:
2281 case lltok::kw_fsub:
2283 case lltok::kw_fmul:
2284 case lltok::kw_udiv:
2285 case lltok::kw_sdiv:
2286 case lltok::kw_fdiv:
2287 case lltok::kw_urem:
2288 case lltok::kw_srem:
2289 case lltok::kw_frem:
2291 case lltok::kw_lshr:
2292 case lltok::kw_ashr: {
2296 unsigned Opc = Lex.getUIntVal();
2297 Constant *Val0, *Val1;
2299 LocTy ModifierLoc = Lex.getLoc();
2300 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
2301 Opc == Instruction::Mul || Opc == Instruction::Shl) {
2302 if (EatIfPresent(lltok::kw_nuw))
2304 if (EatIfPresent(lltok::kw_nsw)) {
2306 if (EatIfPresent(lltok::kw_nuw))
2309 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
2310 Opc == Instruction::LShr || Opc == Instruction::AShr) {
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 case Instruction::Shl:
2338 case Instruction::AShr:
2339 case Instruction::LShr:
2340 if (!Val0->getType()->isIntOrIntVectorTy())
2341 return Error(ID.Loc, "constexpr requires integer operands");
2343 case Instruction::FAdd:
2344 case Instruction::FSub:
2345 case Instruction::FMul:
2346 case Instruction::FDiv:
2347 case Instruction::FRem:
2348 if (!Val0->getType()->isFPOrFPVectorTy())
2349 return Error(ID.Loc, "constexpr requires fp operands");
2351 default: llvm_unreachable("Unknown binary operator!");
2354 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2355 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2356 if (Exact) Flags |= PossiblyExactOperator::IsExact;
2357 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2359 ID.Kind = ValID::t_Constant;
2363 // Logical Operations
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 PATypeHolder RetType(Type::getVoidTy(Context));
2678 LocTy RetTypeLoc = Lex.getLoc();
2679 if (ParseOptionalLinkage(Linkage) ||
2680 ParseOptionalVisibility(Visibility) ||
2681 ParseOptionalCallingConv(CC) ||
2682 ParseOptionalAttrs(RetAttrs, 1) ||
2683 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
2686 // Verify that the linkage is ok.
2687 switch ((GlobalValue::LinkageTypes)Linkage) {
2688 case GlobalValue::ExternalLinkage:
2689 break; // always ok.
2690 case GlobalValue::DLLImportLinkage:
2691 case GlobalValue::ExternalWeakLinkage:
2693 return Error(LinkageLoc, "invalid linkage for function definition");
2695 case GlobalValue::PrivateLinkage:
2696 case GlobalValue::LinkerPrivateLinkage:
2697 case GlobalValue::LinkerPrivateWeakLinkage:
2698 case GlobalValue::LinkerPrivateWeakDefAutoLinkage:
2699 case GlobalValue::InternalLinkage:
2700 case GlobalValue::AvailableExternallyLinkage:
2701 case GlobalValue::LinkOnceAnyLinkage:
2702 case GlobalValue::LinkOnceODRLinkage:
2703 case GlobalValue::WeakAnyLinkage:
2704 case GlobalValue::WeakODRLinkage:
2705 case GlobalValue::DLLExportLinkage:
2707 return Error(LinkageLoc, "invalid linkage for function declaration");
2709 case GlobalValue::AppendingLinkage:
2710 case GlobalValue::CommonLinkage:
2711 return Error(LinkageLoc, "invalid function linkage type");
2714 if (!FunctionType::isValidReturnType(RetType) ||
2715 RetType->isOpaqueTy())
2716 return Error(RetTypeLoc, "invalid function return type");
2718 LocTy NameLoc = Lex.getLoc();
2720 std::string FunctionName;
2721 if (Lex.getKind() == lltok::GlobalVar) {
2722 FunctionName = Lex.getStrVal();
2723 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
2724 unsigned NameID = Lex.getUIntVal();
2726 if (NameID != NumberedVals.size())
2727 return TokError("function expected to be numbered '%" +
2728 Twine(NumberedVals.size()) + "'");
2730 return TokError("expected function name");
2735 if (Lex.getKind() != lltok::lparen)
2736 return TokError("expected '(' in function argument list");
2738 std::vector<ArgInfo> ArgList;
2741 std::string Section;
2745 LocTy UnnamedAddrLoc;
2747 if (ParseArgumentList(ArgList, isVarArg, false) ||
2748 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
2750 ParseOptionalAttrs(FuncAttrs, 2) ||
2751 (EatIfPresent(lltok::kw_section) &&
2752 ParseStringConstant(Section)) ||
2753 ParseOptionalAlignment(Alignment) ||
2754 (EatIfPresent(lltok::kw_gc) &&
2755 ParseStringConstant(GC)))
2758 // If the alignment was parsed as an attribute, move to the alignment field.
2759 if (FuncAttrs & Attribute::Alignment) {
2760 Alignment = Attribute::getAlignmentFromAttrs(FuncAttrs);
2761 FuncAttrs &= ~Attribute::Alignment;
2764 // Okay, if we got here, the function is syntactically valid. Convert types
2765 // and do semantic checks.
2766 std::vector<const Type*> ParamTypeList;
2767 SmallVector<AttributeWithIndex, 8> Attrs;
2768 // FIXME : In 3.0, stop accepting zext, sext and inreg as optional function
2770 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
2771 if (FuncAttrs & ObsoleteFuncAttrs) {
2772 RetAttrs |= FuncAttrs & ObsoleteFuncAttrs;
2773 FuncAttrs &= ~ObsoleteFuncAttrs;
2776 if (RetAttrs != Attribute::None)
2777 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
2779 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2780 ParamTypeList.push_back(ArgList[i].Type);
2781 if (ArgList[i].Attrs != Attribute::None)
2782 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
2785 if (FuncAttrs != Attribute::None)
2786 Attrs.push_back(AttributeWithIndex::get(~0, FuncAttrs));
2788 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
2790 if (PAL.paramHasAttr(1, Attribute::StructRet) && !RetType->isVoidTy())
2791 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
2793 const FunctionType *FT =
2794 FunctionType::get(RetType, ParamTypeList, isVarArg);
2795 const PointerType *PFT = PointerType::getUnqual(FT);
2798 if (!FunctionName.empty()) {
2799 // If this was a definition of a forward reference, remove the definition
2800 // from the forward reference table and fill in the forward ref.
2801 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
2802 ForwardRefVals.find(FunctionName);
2803 if (FRVI != ForwardRefVals.end()) {
2804 Fn = M->getFunction(FunctionName);
2805 if (Fn->getType() != PFT)
2806 return Error(FRVI->second.second, "invalid forward reference to "
2807 "function '" + FunctionName + "' with wrong type!");
2809 ForwardRefVals.erase(FRVI);
2810 } else if ((Fn = M->getFunction(FunctionName))) {
2811 // If this function already exists in the symbol table, then it is
2812 // multiply defined. We accept a few cases for old backwards compat.
2813 // FIXME: Remove this stuff for LLVM 3.0.
2814 if (Fn->getType() != PFT || Fn->getAttributes() != PAL ||
2815 (!Fn->isDeclaration() && isDefine)) {
2816 // If the redefinition has different type or different attributes,
2817 // reject it. If both have bodies, reject it.
2818 return Error(NameLoc, "invalid redefinition of function '" +
2819 FunctionName + "'");
2820 } else if (Fn->isDeclaration()) {
2821 // Make sure to strip off any argument names so we can't get conflicts.
2822 for (Function::arg_iterator AI = Fn->arg_begin(), AE = Fn->arg_end();
2826 } else if (M->getNamedValue(FunctionName)) {
2827 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
2831 // If this is a definition of a forward referenced function, make sure the
2833 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
2834 = ForwardRefValIDs.find(NumberedVals.size());
2835 if (I != ForwardRefValIDs.end()) {
2836 Fn = cast<Function>(I->second.first);
2837 if (Fn->getType() != PFT)
2838 return Error(NameLoc, "type of definition and forward reference of '@" +
2839 Twine(NumberedVals.size()) + "' disagree");
2840 ForwardRefValIDs.erase(I);
2845 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
2846 else // Move the forward-reference to the correct spot in the module.
2847 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
2849 if (FunctionName.empty())
2850 NumberedVals.push_back(Fn);
2852 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
2853 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
2854 Fn->setCallingConv(CC);
2855 Fn->setAttributes(PAL);
2856 Fn->setUnnamedAddr(UnnamedAddr);
2857 Fn->setAlignment(Alignment);
2858 Fn->setSection(Section);
2859 if (!GC.empty()) Fn->setGC(GC.c_str());
2861 // Add all of the arguments we parsed to the function.
2862 Function::arg_iterator ArgIt = Fn->arg_begin();
2863 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
2864 // If we run out of arguments in the Function prototype, exit early.
2865 // FIXME: REMOVE THIS IN LLVM 3.0, this is just for the mismatch case above.
2866 if (ArgIt == Fn->arg_end()) break;
2868 // If the argument has a name, insert it into the argument symbol table.
2869 if (ArgList[i].Name.empty()) continue;
2871 // Set the name, if it conflicted, it will be auto-renamed.
2872 ArgIt->setName(ArgList[i].Name);
2874 if (ArgIt->getName() != ArgList[i].Name)
2875 return Error(ArgList[i].Loc, "redefinition of argument '%" +
2876 ArgList[i].Name + "'");
2883 /// ParseFunctionBody
2884 /// ::= '{' BasicBlock+ '}'
2885 /// ::= 'begin' BasicBlock+ 'end' // FIXME: remove in LLVM 3.0
2887 bool LLParser::ParseFunctionBody(Function &Fn) {
2888 if (Lex.getKind() != lltok::lbrace && Lex.getKind() != lltok::kw_begin)
2889 return TokError("expected '{' in function body");
2890 Lex.Lex(); // eat the {.
2892 int FunctionNumber = -1;
2893 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
2895 PerFunctionState PFS(*this, Fn, FunctionNumber);
2897 // We need at least one basic block.
2898 if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_end)
2899 return TokError("function body requires at least one basic block");
2901 while (Lex.getKind() != lltok::rbrace && Lex.getKind() != lltok::kw_end)
2902 if (ParseBasicBlock(PFS)) return true;
2907 // Verify function is ok.
2908 return PFS.FinishFunction();
2912 /// ::= LabelStr? Instruction*
2913 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
2914 // If this basic block starts out with a name, remember it.
2916 LocTy NameLoc = Lex.getLoc();
2917 if (Lex.getKind() == lltok::LabelStr) {
2918 Name = Lex.getStrVal();
2922 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
2923 if (BB == 0) return true;
2925 std::string NameStr;
2927 // Parse the instructions in this block until we get a terminator.
2929 SmallVector<std::pair<unsigned, MDNode *>, 4> MetadataOnInst;
2931 // This instruction may have three possibilities for a name: a) none
2932 // specified, b) name specified "%foo =", c) number specified: "%4 =".
2933 LocTy NameLoc = Lex.getLoc();
2937 if (Lex.getKind() == lltok::LocalVarID) {
2938 NameID = Lex.getUIntVal();
2940 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
2942 } else if (Lex.getKind() == lltok::LocalVar ||
2943 // FIXME: REMOVE IN LLVM 3.0
2944 Lex.getKind() == lltok::StringConstant) {
2945 NameStr = Lex.getStrVal();
2947 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
2951 switch (ParseInstruction(Inst, BB, PFS)) {
2952 default: assert(0 && "Unknown ParseInstruction result!");
2953 case InstError: return true;
2955 BB->getInstList().push_back(Inst);
2957 // With a normal result, we check to see if the instruction is followed by
2958 // a comma and metadata.
2959 if (EatIfPresent(lltok::comma))
2960 if (ParseInstructionMetadata(Inst, &PFS))
2963 case InstExtraComma:
2964 BB->getInstList().push_back(Inst);
2966 // If the instruction parser ate an extra comma at the end of it, it
2967 // *must* be followed by metadata.
2968 if (ParseInstructionMetadata(Inst, &PFS))
2973 // Set the name on the instruction.
2974 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
2975 } while (!isa<TerminatorInst>(Inst));
2980 //===----------------------------------------------------------------------===//
2981 // Instruction Parsing.
2982 //===----------------------------------------------------------------------===//
2984 /// ParseInstruction - Parse one of the many different instructions.
2986 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
2987 PerFunctionState &PFS) {
2988 lltok::Kind Token = Lex.getKind();
2989 if (Token == lltok::Eof)
2990 return TokError("found end of file when expecting more instructions");
2991 LocTy Loc = Lex.getLoc();
2992 unsigned KeywordVal = Lex.getUIntVal();
2993 Lex.Lex(); // Eat the keyword.
2996 default: return Error(Loc, "expected instruction opcode");
2997 // Terminator Instructions.
2998 case lltok::kw_unwind: Inst = new UnwindInst(Context); return false;
2999 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
3000 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
3001 case lltok::kw_br: return ParseBr(Inst, PFS);
3002 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
3003 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
3004 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
3005 // Binary Operators.
3009 case lltok::kw_shl: {
3010 LocTy ModifierLoc = Lex.getLoc();
3011 bool NUW = EatIfPresent(lltok::kw_nuw);
3012 bool NSW = EatIfPresent(lltok::kw_nsw);
3013 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
3015 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3017 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
3018 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
3021 case lltok::kw_fadd:
3022 case lltok::kw_fsub:
3023 case lltok::kw_fmul: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
3025 case lltok::kw_sdiv:
3026 case lltok::kw_udiv:
3027 case lltok::kw_lshr:
3028 case lltok::kw_ashr: {
3029 bool Exact = EatIfPresent(lltok::kw_exact);
3031 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3032 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
3036 case lltok::kw_urem:
3037 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
3038 case lltok::kw_fdiv:
3039 case lltok::kw_frem: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
3042 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
3043 case lltok::kw_icmp:
3044 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
3046 case lltok::kw_trunc:
3047 case lltok::kw_zext:
3048 case lltok::kw_sext:
3049 case lltok::kw_fptrunc:
3050 case lltok::kw_fpext:
3051 case lltok::kw_bitcast:
3052 case lltok::kw_uitofp:
3053 case lltok::kw_sitofp:
3054 case lltok::kw_fptoui:
3055 case lltok::kw_fptosi:
3056 case lltok::kw_inttoptr:
3057 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
3059 case lltok::kw_select: return ParseSelect(Inst, PFS);
3060 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
3061 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
3062 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
3063 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
3064 case lltok::kw_phi: return ParsePHI(Inst, PFS);
3065 case lltok::kw_call: return ParseCall(Inst, PFS, false);
3066 case lltok::kw_tail: return ParseCall(Inst, PFS, true);
3068 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
3069 case lltok::kw_malloc: return ParseAlloc(Inst, PFS, BB, false);
3070 case lltok::kw_free: return ParseFree(Inst, PFS, BB);
3071 case lltok::kw_load: return ParseLoad(Inst, PFS, false);
3072 case lltok::kw_store: return ParseStore(Inst, PFS, false);
3073 case lltok::kw_volatile:
3074 if (EatIfPresent(lltok::kw_load))
3075 return ParseLoad(Inst, PFS, true);
3076 else if (EatIfPresent(lltok::kw_store))
3077 return ParseStore(Inst, PFS, true);
3079 return TokError("expected 'load' or 'store'");
3080 case lltok::kw_getresult: return ParseGetResult(Inst, PFS);
3081 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
3082 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
3083 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
3087 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
3088 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
3089 if (Opc == Instruction::FCmp) {
3090 switch (Lex.getKind()) {
3091 default: TokError("expected fcmp predicate (e.g. 'oeq')");
3092 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
3093 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
3094 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
3095 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
3096 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
3097 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
3098 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
3099 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
3100 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
3101 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
3102 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
3103 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
3104 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
3105 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
3106 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
3107 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
3110 switch (Lex.getKind()) {
3111 default: TokError("expected icmp predicate (e.g. 'eq')");
3112 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
3113 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
3114 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
3115 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
3116 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
3117 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
3118 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
3119 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
3120 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
3121 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3128 //===----------------------------------------------------------------------===//
3129 // Terminator Instructions.
3130 //===----------------------------------------------------------------------===//
3132 /// ParseRet - Parse a return instruction.
3133 /// ::= 'ret' void (',' !dbg, !1)*
3134 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
3135 /// ::= 'ret' TypeAndValue (',' TypeAndValue)+ (',' !dbg, !1)*
3136 /// [[obsolete: LLVM 3.0]]
3137 int LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3138 PerFunctionState &PFS) {
3139 PATypeHolder Ty(Type::getVoidTy(Context));
3140 if (ParseType(Ty, true /*void allowed*/)) return true;
3142 if (Ty->isVoidTy()) {
3143 Inst = ReturnInst::Create(Context);
3148 if (ParseValue(Ty, RV, PFS)) return true;
3150 bool ExtraComma = false;
3151 if (EatIfPresent(lltok::comma)) {
3152 // Parse optional custom metadata, e.g. !dbg
3153 if (Lex.getKind() == lltok::MetadataVar) {
3156 // The normal case is one return value.
3157 // FIXME: LLVM 3.0 remove MRV support for 'ret i32 1, i32 2', requiring
3158 // use of 'ret {i32,i32} {i32 1, i32 2}'
3159 SmallVector<Value*, 8> RVs;
3163 // If optional custom metadata, e.g. !dbg is seen then this is the
3165 if (Lex.getKind() == lltok::MetadataVar)
3167 if (ParseTypeAndValue(RV, PFS)) return true;
3169 } while (EatIfPresent(lltok::comma));
3171 RV = UndefValue::get(PFS.getFunction().getReturnType());
3172 for (unsigned i = 0, e = RVs.size(); i != e; ++i) {
3173 Instruction *I = InsertValueInst::Create(RV, RVs[i], i, "mrv");
3174 BB->getInstList().push_back(I);
3180 Inst = ReturnInst::Create(Context, RV);
3181 return ExtraComma ? InstExtraComma : InstNormal;
3186 /// ::= 'br' TypeAndValue
3187 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3188 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
3191 BasicBlock *Op1, *Op2;
3192 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
3194 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
3195 Inst = BranchInst::Create(BB);
3199 if (Op0->getType() != Type::getInt1Ty(Context))
3200 return Error(Loc, "branch condition must have 'i1' type");
3202 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
3203 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
3204 ParseToken(lltok::comma, "expected ',' after true destination") ||
3205 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
3208 Inst = BranchInst::Create(Op1, Op2, Op0);
3214 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
3216 /// ::= (TypeAndValue ',' TypeAndValue)*
3217 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
3218 LocTy CondLoc, BBLoc;
3220 BasicBlock *DefaultBB;
3221 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
3222 ParseToken(lltok::comma, "expected ',' after switch condition") ||
3223 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
3224 ParseToken(lltok::lsquare, "expected '[' with switch table"))
3227 if (!Cond->getType()->isIntegerTy())
3228 return Error(CondLoc, "switch condition must have integer type");
3230 // Parse the jump table pairs.
3231 SmallPtrSet<Value*, 32> SeenCases;
3232 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
3233 while (Lex.getKind() != lltok::rsquare) {
3237 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
3238 ParseToken(lltok::comma, "expected ',' after case value") ||
3239 ParseTypeAndBasicBlock(DestBB, PFS))
3242 if (!SeenCases.insert(Constant))
3243 return Error(CondLoc, "duplicate case value in switch");
3244 if (!isa<ConstantInt>(Constant))
3245 return Error(CondLoc, "case value is not a constant integer");
3247 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
3250 Lex.Lex(); // Eat the ']'.
3252 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
3253 for (unsigned i = 0, e = Table.size(); i != e; ++i)
3254 SI->addCase(Table[i].first, Table[i].second);
3261 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
3262 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
3265 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
3266 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
3267 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
3270 if (!Address->getType()->isPointerTy())
3271 return Error(AddrLoc, "indirectbr address must have pointer type");
3273 // Parse the destination list.
3274 SmallVector<BasicBlock*, 16> DestList;
3276 if (Lex.getKind() != lltok::rsquare) {
3278 if (ParseTypeAndBasicBlock(DestBB, PFS))
3280 DestList.push_back(DestBB);
3282 while (EatIfPresent(lltok::comma)) {
3283 if (ParseTypeAndBasicBlock(DestBB, PFS))
3285 DestList.push_back(DestBB);
3289 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
3292 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
3293 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
3294 IBI->addDestination(DestList[i]);
3301 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3302 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3303 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3304 LocTy CallLoc = Lex.getLoc();
3305 unsigned RetAttrs, FnAttrs;
3307 PATypeHolder RetType(Type::getVoidTy(Context));
3310 SmallVector<ParamInfo, 16> ArgList;
3312 BasicBlock *NormalBB, *UnwindBB;
3313 if (ParseOptionalCallingConv(CC) ||
3314 ParseOptionalAttrs(RetAttrs, 1) ||
3315 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3316 ParseValID(CalleeID) ||
3317 ParseParameterList(ArgList, PFS) ||
3318 ParseOptionalAttrs(FnAttrs, 2) ||
3319 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3320 ParseTypeAndBasicBlock(NormalBB, PFS) ||
3321 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3322 ParseTypeAndBasicBlock(UnwindBB, PFS))
3325 // If RetType is a non-function pointer type, then this is the short syntax
3326 // for the call, which means that RetType is just the return type. Infer the
3327 // rest of the function argument types from the arguments that are present.
3328 const PointerType *PFTy = 0;
3329 const FunctionType *Ty = 0;
3330 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3331 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3332 // Pull out the types of all of the arguments...
3333 std::vector<const Type*> ParamTypes;
3334 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3335 ParamTypes.push_back(ArgList[i].V->getType());
3337 if (!FunctionType::isValidReturnType(RetType))
3338 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3340 Ty = FunctionType::get(RetType, ParamTypes, false);
3341 PFTy = PointerType::getUnqual(Ty);
3344 // Look up the callee.
3346 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3348 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
3349 // function attributes.
3350 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
3351 if (FnAttrs & ObsoleteFuncAttrs) {
3352 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
3353 FnAttrs &= ~ObsoleteFuncAttrs;
3356 // Set up the Attributes for the function.
3357 SmallVector<AttributeWithIndex, 8> Attrs;
3358 if (RetAttrs != Attribute::None)
3359 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3361 SmallVector<Value*, 8> Args;
3363 // Loop through FunctionType's arguments and ensure they are specified
3364 // correctly. Also, gather any parameter attributes.
3365 FunctionType::param_iterator I = Ty->param_begin();
3366 FunctionType::param_iterator E = Ty->param_end();
3367 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3368 const Type *ExpectedTy = 0;
3371 } else if (!Ty->isVarArg()) {
3372 return Error(ArgList[i].Loc, "too many arguments specified");
3375 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3376 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3377 ExpectedTy->getDescription() + "'");
3378 Args.push_back(ArgList[i].V);
3379 if (ArgList[i].Attrs != Attribute::None)
3380 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3384 return Error(CallLoc, "not enough parameters specified for call");
3386 if (FnAttrs != Attribute::None)
3387 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3389 // Finish off the Attributes and check them
3390 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3392 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB,
3393 Args.begin(), Args.end());
3394 II->setCallingConv(CC);
3395 II->setAttributes(PAL);
3402 //===----------------------------------------------------------------------===//
3403 // Binary Operators.
3404 //===----------------------------------------------------------------------===//
3407 /// ::= ArithmeticOps TypeAndValue ',' Value
3409 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3410 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3411 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3412 unsigned Opc, unsigned OperandType) {
3413 LocTy Loc; Value *LHS, *RHS;
3414 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3415 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3416 ParseValue(LHS->getType(), RHS, PFS))
3420 switch (OperandType) {
3421 default: llvm_unreachable("Unknown operand type!");
3422 case 0: // int or FP.
3423 Valid = LHS->getType()->isIntOrIntVectorTy() ||
3424 LHS->getType()->isFPOrFPVectorTy();
3426 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
3427 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
3431 return Error(Loc, "invalid operand type for instruction");
3433 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3438 /// ::= ArithmeticOps TypeAndValue ',' Value {
3439 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3441 LocTy Loc; Value *LHS, *RHS;
3442 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3443 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3444 ParseValue(LHS->getType(), RHS, PFS))
3447 if (!LHS->getType()->isIntOrIntVectorTy())
3448 return Error(Loc,"instruction requires integer or integer vector operands");
3450 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3456 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3457 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3458 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3460 // Parse the integer/fp comparison predicate.
3464 if (ParseCmpPredicate(Pred, Opc) ||
3465 ParseTypeAndValue(LHS, Loc, PFS) ||
3466 ParseToken(lltok::comma, "expected ',' after compare value") ||
3467 ParseValue(LHS->getType(), RHS, PFS))
3470 if (Opc == Instruction::FCmp) {
3471 if (!LHS->getType()->isFPOrFPVectorTy())
3472 return Error(Loc, "fcmp requires floating point operands");
3473 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3475 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
3476 if (!LHS->getType()->isIntOrIntVectorTy() &&
3477 !LHS->getType()->isPointerTy())
3478 return Error(Loc, "icmp requires integer operands");
3479 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3484 //===----------------------------------------------------------------------===//
3485 // Other Instructions.
3486 //===----------------------------------------------------------------------===//
3490 /// ::= CastOpc TypeAndValue 'to' Type
3491 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
3493 LocTy Loc; Value *Op;
3494 PATypeHolder DestTy(Type::getVoidTy(Context));
3495 if (ParseTypeAndValue(Op, Loc, PFS) ||
3496 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
3500 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
3501 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
3502 return Error(Loc, "invalid cast opcode for cast from '" +
3503 Op->getType()->getDescription() + "' to '" +
3504 DestTy->getDescription() + "'");
3506 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
3511 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3512 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
3514 Value *Op0, *Op1, *Op2;
3515 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3516 ParseToken(lltok::comma, "expected ',' after select condition") ||
3517 ParseTypeAndValue(Op1, PFS) ||
3518 ParseToken(lltok::comma, "expected ',' after select value") ||
3519 ParseTypeAndValue(Op2, PFS))
3522 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
3523 return Error(Loc, Reason);
3525 Inst = SelectInst::Create(Op0, Op1, Op2);
3530 /// ::= 'va_arg' TypeAndValue ',' Type
3531 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
3533 PATypeHolder EltTy(Type::getVoidTy(Context));
3535 if (ParseTypeAndValue(Op, PFS) ||
3536 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
3537 ParseType(EltTy, TypeLoc))
3540 if (!EltTy->isFirstClassType())
3541 return Error(TypeLoc, "va_arg requires operand with first class type");
3543 Inst = new VAArgInst(Op, EltTy);
3547 /// ParseExtractElement
3548 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
3549 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
3552 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3553 ParseToken(lltok::comma, "expected ',' after extract value") ||
3554 ParseTypeAndValue(Op1, PFS))
3557 if (!ExtractElementInst::isValidOperands(Op0, Op1))
3558 return Error(Loc, "invalid extractelement operands");
3560 Inst = ExtractElementInst::Create(Op0, Op1);
3564 /// ParseInsertElement
3565 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3566 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
3568 Value *Op0, *Op1, *Op2;
3569 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3570 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3571 ParseTypeAndValue(Op1, PFS) ||
3572 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3573 ParseTypeAndValue(Op2, PFS))
3576 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
3577 return Error(Loc, "invalid insertelement operands");
3579 Inst = InsertElementInst::Create(Op0, Op1, Op2);
3583 /// ParseShuffleVector
3584 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3585 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
3587 Value *Op0, *Op1, *Op2;
3588 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3589 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
3590 ParseTypeAndValue(Op1, PFS) ||
3591 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
3592 ParseTypeAndValue(Op2, PFS))
3595 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
3596 return Error(Loc, "invalid extractelement operands");
3598 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
3603 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
3604 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
3605 PATypeHolder Ty(Type::getVoidTy(Context));
3607 LocTy TypeLoc = Lex.getLoc();
3609 if (ParseType(Ty) ||
3610 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3611 ParseValue(Ty, Op0, PFS) ||
3612 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3613 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3614 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3617 bool AteExtraComma = false;
3618 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
3620 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
3622 if (!EatIfPresent(lltok::comma))
3625 if (Lex.getKind() == lltok::MetadataVar) {
3626 AteExtraComma = true;
3630 if (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"))
3638 if (!Ty->isFirstClassType())
3639 return Error(TypeLoc, "phi node must have first class type");
3641 PHINode *PN = PHINode::Create(Ty);
3642 PN->reserveOperandSpace(PHIVals.size());
3643 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
3644 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
3646 return AteExtraComma ? InstExtraComma : InstNormal;
3650 /// ::= 'tail'? 'call' OptionalCallingConv OptionalAttrs Type Value
3651 /// ParameterList OptionalAttrs
3652 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
3654 unsigned RetAttrs, FnAttrs;
3656 PATypeHolder RetType(Type::getVoidTy(Context));
3659 SmallVector<ParamInfo, 16> ArgList;
3660 LocTy CallLoc = Lex.getLoc();
3662 if ((isTail && ParseToken(lltok::kw_call, "expected 'tail call'")) ||
3663 ParseOptionalCallingConv(CC) ||
3664 ParseOptionalAttrs(RetAttrs, 1) ||
3665 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3666 ParseValID(CalleeID) ||
3667 ParseParameterList(ArgList, PFS) ||
3668 ParseOptionalAttrs(FnAttrs, 2))
3671 // If RetType is a non-function pointer type, then this is the short syntax
3672 // for the call, which means that RetType is just the return type. Infer the
3673 // rest of the function argument types from the arguments that are present.
3674 const PointerType *PFTy = 0;
3675 const FunctionType *Ty = 0;
3676 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3677 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3678 // Pull out the types of all of the arguments...
3679 std::vector<const Type*> ParamTypes;
3680 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3681 ParamTypes.push_back(ArgList[i].V->getType());
3683 if (!FunctionType::isValidReturnType(RetType))
3684 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3686 Ty = FunctionType::get(RetType, ParamTypes, false);
3687 PFTy = PointerType::getUnqual(Ty);
3690 // Look up the callee.
3692 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3694 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
3695 // function attributes.
3696 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
3697 if (FnAttrs & ObsoleteFuncAttrs) {
3698 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
3699 FnAttrs &= ~ObsoleteFuncAttrs;
3702 // Set up the Attributes for the function.
3703 SmallVector<AttributeWithIndex, 8> Attrs;
3704 if (RetAttrs != Attribute::None)
3705 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3707 SmallVector<Value*, 8> Args;
3709 // Loop through FunctionType's arguments and ensure they are specified
3710 // correctly. Also, gather any parameter attributes.
3711 FunctionType::param_iterator I = Ty->param_begin();
3712 FunctionType::param_iterator E = Ty->param_end();
3713 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3714 const Type *ExpectedTy = 0;
3717 } else if (!Ty->isVarArg()) {
3718 return Error(ArgList[i].Loc, "too many arguments specified");
3721 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3722 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3723 ExpectedTy->getDescription() + "'");
3724 Args.push_back(ArgList[i].V);
3725 if (ArgList[i].Attrs != Attribute::None)
3726 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3730 return Error(CallLoc, "not enough parameters specified for call");
3732 if (FnAttrs != Attribute::None)
3733 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3735 // Finish off the Attributes and check them
3736 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3738 CallInst *CI = CallInst::Create(Callee, Args.begin(), Args.end());
3739 CI->setTailCall(isTail);
3740 CI->setCallingConv(CC);
3741 CI->setAttributes(PAL);
3746 //===----------------------------------------------------------------------===//
3747 // Memory Instructions.
3748 //===----------------------------------------------------------------------===//
3751 /// ::= 'malloc' Type (',' TypeAndValue)? (',' OptionalInfo)?
3752 /// ::= 'alloca' Type (',' TypeAndValue)? (',' OptionalInfo)?
3753 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS,
3754 BasicBlock* BB, bool isAlloca) {
3755 PATypeHolder Ty(Type::getVoidTy(Context));
3758 unsigned Alignment = 0;
3759 if (ParseType(Ty)) return true;
3761 bool AteExtraComma = false;
3762 if (EatIfPresent(lltok::comma)) {
3763 if (Lex.getKind() == lltok::kw_align) {
3764 if (ParseOptionalAlignment(Alignment)) return true;
3765 } else if (Lex.getKind() == lltok::MetadataVar) {
3766 AteExtraComma = true;
3768 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
3769 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3774 if (Size && !Size->getType()->isIntegerTy())
3775 return Error(SizeLoc, "element count must have integer type");
3778 Inst = new AllocaInst(Ty, Size, Alignment);
3779 return AteExtraComma ? InstExtraComma : InstNormal;
3782 // Autoupgrade old malloc instruction to malloc call.
3783 // FIXME: Remove in LLVM 3.0.
3784 if (Size && !Size->getType()->isIntegerTy(32))
3785 return Error(SizeLoc, "element count must be i32");
3786 const Type *IntPtrTy = Type::getInt32Ty(Context);
3787 Constant *AllocSize = ConstantExpr::getSizeOf(Ty);
3788 AllocSize = ConstantExpr::getTruncOrBitCast(AllocSize, IntPtrTy);
3790 // Prototype malloc as "void *(int32)".
3791 // This function is renamed as "malloc" in ValidateEndOfModule().
3792 MallocF = cast<Function>(
3793 M->getOrInsertFunction("", Type::getInt8PtrTy(Context), IntPtrTy, NULL));
3794 Inst = CallInst::CreateMalloc(BB, IntPtrTy, Ty, AllocSize, Size, MallocF);
3795 return AteExtraComma ? InstExtraComma : InstNormal;
3799 /// ::= 'free' TypeAndValue
3800 bool LLParser::ParseFree(Instruction *&Inst, PerFunctionState &PFS,
3802 Value *Val; LocTy Loc;
3803 if (ParseTypeAndValue(Val, Loc, PFS)) return true;
3804 if (!Val->getType()->isPointerTy())
3805 return Error(Loc, "operand to free must be a pointer");
3806 Inst = CallInst::CreateFree(Val, BB);
3811 /// ::= 'volatile'? 'load' TypeAndValue (',' OptionalInfo)?
3812 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS,
3814 Value *Val; LocTy Loc;
3815 unsigned Alignment = 0;
3816 bool AteExtraComma = false;
3817 if (ParseTypeAndValue(Val, Loc, PFS) ||
3818 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3821 if (!Val->getType()->isPointerTy() ||
3822 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
3823 return Error(Loc, "load operand must be a pointer to a first class type");
3825 Inst = new LoadInst(Val, "", isVolatile, Alignment);
3826 return AteExtraComma ? InstExtraComma : InstNormal;
3830 /// ::= 'volatile'? 'store' TypeAndValue ',' TypeAndValue (',' 'align' i32)?
3831 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS,
3833 Value *Val, *Ptr; LocTy Loc, PtrLoc;
3834 unsigned Alignment = 0;
3835 bool AteExtraComma = false;
3836 if (ParseTypeAndValue(Val, Loc, PFS) ||
3837 ParseToken(lltok::comma, "expected ',' after store operand") ||
3838 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
3839 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3842 if (!Ptr->getType()->isPointerTy())
3843 return Error(PtrLoc, "store operand must be a pointer");
3844 if (!Val->getType()->isFirstClassType())
3845 return Error(Loc, "store operand must be a first class value");
3846 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
3847 return Error(Loc, "stored value and pointer type do not match");
3849 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment);
3850 return AteExtraComma ? InstExtraComma : InstNormal;
3854 /// ::= 'getresult' TypeAndValue ',' i32
3855 /// FIXME: Remove support for getresult in LLVM 3.0
3856 bool LLParser::ParseGetResult(Instruction *&Inst, PerFunctionState &PFS) {
3857 Value *Val; LocTy ValLoc, EltLoc;
3859 if (ParseTypeAndValue(Val, ValLoc, PFS) ||
3860 ParseToken(lltok::comma, "expected ',' after getresult operand") ||
3861 ParseUInt32(Element, EltLoc))
3864 if (!Val->getType()->isStructTy() && !Val->getType()->isArrayTy())
3865 return Error(ValLoc, "getresult inst requires an aggregate operand");
3866 if (!ExtractValueInst::getIndexedType(Val->getType(), Element))
3867 return Error(EltLoc, "invalid getresult index for value");
3868 Inst = ExtractValueInst::Create(Val, Element);
3872 /// ParseGetElementPtr
3873 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
3874 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
3875 Value *Ptr, *Val; LocTy Loc, EltLoc;
3877 bool InBounds = EatIfPresent(lltok::kw_inbounds);
3879 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
3881 if (!Ptr->getType()->isPointerTy())
3882 return Error(Loc, "base of getelementptr must be a pointer");
3884 SmallVector<Value*, 16> Indices;
3885 bool AteExtraComma = false;
3886 while (EatIfPresent(lltok::comma)) {
3887 if (Lex.getKind() == lltok::MetadataVar) {
3888 AteExtraComma = true;
3891 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
3892 if (!Val->getType()->isIntegerTy())
3893 return Error(EltLoc, "getelementptr index must be an integer");
3894 Indices.push_back(Val);
3897 if (!GetElementPtrInst::getIndexedType(Ptr->getType(),
3898 Indices.begin(), Indices.end()))
3899 return Error(Loc, "invalid getelementptr indices");
3900 Inst = GetElementPtrInst::Create(Ptr, Indices.begin(), Indices.end());
3902 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
3903 return AteExtraComma ? InstExtraComma : InstNormal;
3906 /// ParseExtractValue
3907 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
3908 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
3909 Value *Val; LocTy Loc;
3910 SmallVector<unsigned, 4> Indices;
3912 if (ParseTypeAndValue(Val, Loc, PFS) ||
3913 ParseIndexList(Indices, AteExtraComma))
3916 if (!Val->getType()->isAggregateType())
3917 return Error(Loc, "extractvalue operand must be aggregate type");
3919 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
3921 return Error(Loc, "invalid indices for extractvalue");
3922 Inst = ExtractValueInst::Create(Val, Indices.begin(), Indices.end());
3923 return AteExtraComma ? InstExtraComma : InstNormal;
3926 /// ParseInsertValue
3927 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
3928 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
3929 Value *Val0, *Val1; LocTy Loc0, Loc1;
3930 SmallVector<unsigned, 4> Indices;
3932 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
3933 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
3934 ParseTypeAndValue(Val1, Loc1, PFS) ||
3935 ParseIndexList(Indices, AteExtraComma))
3938 if (!Val0->getType()->isAggregateType())
3939 return Error(Loc0, "insertvalue operand must be aggregate type");
3941 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
3943 return Error(Loc0, "invalid indices for insertvalue");
3944 Inst = InsertValueInst::Create(Val0, Val1, Indices.begin(), Indices.end());
3945 return AteExtraComma ? InstExtraComma : InstNormal;
3948 //===----------------------------------------------------------------------===//
3949 // Embedded metadata.
3950 //===----------------------------------------------------------------------===//
3952 /// ParseMDNodeVector
3953 /// ::= Element (',' Element)*
3955 /// ::= 'null' | TypeAndValue
3956 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts,
3957 PerFunctionState *PFS) {
3958 // Check for an empty list.
3959 if (Lex.getKind() == lltok::rbrace)
3963 // Null is a special case since it is typeless.
3964 if (EatIfPresent(lltok::kw_null)) {
3970 PATypeHolder Ty(Type::getVoidTy(Context));
3972 if (ParseType(Ty) || ParseValID(ID, PFS) ||
3973 ConvertValIDToValue(Ty, ID, V, PFS))
3977 } while (EatIfPresent(lltok::comma));